Patent Publication Number: US-11389756-B2

Title: Water ejecting apparatus

Description:
CROSS-REFERENCE TO RELATED APPLICATION 
     This application claims a benefit under 35 U.S.C. § 119(a) of Korean Patent Application No. 10-2019-0080368, filed on Jul. 3, 2019, the disclosure of which is incorporated herein by reference in its entirety. 
     TECHNICAL FIELD 
     The present disclosure relates to a water ejecting apparatus applicable to a water purifier and a vending machine for drinking water. 
     BACKGROUND 
     In general, water purifiers are devices that filter water and supply purified water without impurities. The water purifiers are widely used in household appliances or industries. In particular, the water purifiers may be provided as household water purifiers to provide purified water to users for consumption. 
     The water purifier includes a water purifier body that mounts a filter and a water ejecting part that provides filtered water from the water purifier body. In general, the water ejecting part is fixedly disposed on a front surface of the water purifier body. A user may place a container under the water ejecting part so that the water ejecting part can dispense water into the container. The fixed position of the water ejecting part limits the placement of a container for dispensing water from the water ejecting part, thereby leaving inconvenience in using the water purifier. 
     Some water purifiers include a water ejecting part that is provided on one side of a main body. The water ejecting part is coupled to the main body when rotated at a predetermined angle from the main body. In particular, the water ejecting part is separated from the main body by the user, rotated by a set angle, and coupled again with the main body. This way, a user may change the position of the water ejecting part relative to the main body. However, the user needs to disassemble and reassemble the water ejecting part in these water purifiers, thereby causing user inconvenience. In addition, components may be lost and damaged during the disassembling and reassembling. Further, since the water ejecting part connects with a water ejection pipe for discharging purified water, water leakage may result from the disassembling and reassembling. Moreover, since the water ejecting part is rotated and fixed only at a predetermined angle, the position of the water ejecting part is limited. In particular, the water ejecting part may only move in a horizontal direction, and cannot move in a vertical direction. Therefore, it does not meet the needs of the user to place a container in various locations for water dispensing. 
     Home appliances have been developed to be used with various containers for high water temperature. Although consumers&#39; demands on hot water temperatures and convenience of water ejection from water purifier products have increased and recognized as important factors in product selection, the products in the market have not met such expectation. 
     Various technologies have been developed and applied to improve ease of use of the water purifiers. However, such technologies have not satisfied consumers&#39; demands. For example, there remain several problems, such as the risk of hot water in the water purifiers, and the contamination of a water ejection nozzle resulting from water splashes. In particular, some water purifiers provide a water ejection nozzle for dispensing purified water, hot water, or cold water from such a height that water splashes when the dispensed water drops and comes into contact with a cup below the water election nozzle. 
     In addition, some water purifiers may have a risk of burns resulting from splashes of hot water being dispensed. Further, the surroundings of the water purifiers may be contaminated when water splashes. In addition, some water purifiers provide a limited position of the water ejecting part. 
     Accordingly, it is necessary to develop a water purifier that provides a hygienic environment to consumers, while improving the convenience of the water purifier. 
     In some water purifiers, when a driving motor and a driving gear rotate, a cock moving gear rotates, a detachable gear part ascends, and a cock part coupled to the detachable gear part ascends to adjust a height. In addition, such water purifiers include a rotation limiting unit provided on the cock body so that the detachable gear rotates only within a certain range. Further, the rotation limiting unit includes a support spring, a fixed hook, and a rotation limiting recess, and the fixed hook is fitted into the rotation limiting recess so that the fixed hook and the detachable gear rotate only within a certain range. While these water purifiers may permit a water ejection nozzle to operate up and down, it is impossible to detect the presence of a container placed under the water ejection nozzle and a height of the container. Also, the water purifiers do not provide techniques for automatically elevating the water ejection nozzle or techniques for detecting the height of the water receiving container placed below the water ejection nozzle, lowering the water ejection nozzle to the corresponding height of the container, and subsequently ejecting water. 
     In addition, some water purifiers do not provide a space that is sufficient for deformation of a water ejection pipe according to vertical movement of the water ejection nozzle in a small interior of a water ejection unit of the water purifier. 
     Further, some water purifiers can dispense water when a user manually position a water ejection nozzle at a predetermined height, thereby complicating the water ejecting process. 
     In addition, some water purifiers include two water ejection nozzles, each of which is operated based on the rotational directions of a motor (CW: left, CCW: right). It is thus difficult to detect a height of a cup. Further, after one of the water ejection nozzles is fixed, it is difficult to immediately handle water ejection from the other water ejection nozzle. 
     SUMMARY OF THE DISCLOSURE 
     An aspect of the present disclosure relates to a water ejecting apparatus in which a water ejection nozzle for ejecting water is automatically moved up and down according to driving of a lifting motor. 
     Another aspect of the present disclosure relates to a water ejecting apparatus which is provided to be rotatable and movable not only in a vertical direction but also in a horizontal direction, thereby increasing user convenience. 
     Another aspect of the present disclosure relates to a water ejecting apparatus that includes a water ejecting part which can be automatically lifted and manually rotated in a horizontal direction. 
     Another aspect of the present disclosure relates to a water ejecting apparatus that permits various pipes for water ejection to easily arrange in a water ejection unit, and reduces or minimizes movement of pipes disposed in a case, when the water ejection unit performs rotation and elevating operation, so that deformation of the pipes are reduced or minimized. 
     Another aspect of the present disclosure relates to a water ejecting apparatus that is capable of more sensitively detecting height and width of various containers placed below a water ejection nozzle. 
     Another aspect of the present disclosure relates to a water ejecting apparatus that is capable of detecting a height of a light-weight container (e.g., a paper cup and a disposable cup) that is placed below a water ejection nozzle, by minimizing a load that is applied against the container when the water ejecting apparatus contacts with the container to measure the height of the container. 
     Another aspect of the present disclosure relates to a water ejecting apparatus that is capable of detecting a height of a water receiving container having any size disposed between a water ejection nozzle and a front surface of a case. 
     Another aspect of the present disclosure relates to a water ejecting apparatus that is capable of adjusting a reaction speed of a touch bar for detecting a water receiving container. 
     Another aspect of the present disclosure relates to a water ejecting apparatus that provides parts having increased or improved strength for ascending and descending of a water ejection nozzle. 
     Another aspect of the present disclosure relates to a water ejecting apparatus that prevents shaking or vibration during an elevating operation of a water ejection nozzle. 
     Another aspect of the present disclosure relates to a water ejecting apparatus that reduces a water splash phenomenon that may result from a hydraulic head based on a distance between a water ejection nozzle and a water receiving container. For example, the water ejecting apparatus of the present disclosure can reduce a water splash by adjusting a height of the water ejection nozzle. In addition, the water ejecting apparatus can reduce or eliminate contamination of the water ejection nozzle, thereby improving hygiene. 
     Another aspect of the present disclosure relates to a water ejecting apparatus that improves safety by preventing burns that may result from water splashing during hot water ejection. 
     Another aspect of the present disclosure relates to a water ejecting apparatus that is capable of detecting containers having various sizes of inlets and containers of various heights. 
     Another aspect of the present disclosure relates to a water ejecting apparatus that is capable of identifying an elevating operation state of a water ejection nozzle even if the operation of the water ejecting apparatus is intervened, such as by a user&#39;s accidental or unconscious interference with the apparatus. 
     Another aspect of the present disclosure relates to a water ejecting apparatus that can dispense water after a water ejection nozzle descends near a water receiving container, which can be determined using a reduced number of sensors. 
     Additional advantages and features of the present disclosure will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the present disclosure. The objectives and other advantages of the present disclosure may be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings. 
     To achieve these and other advantages and in accordance with the purpose of the invention, particular embodiments described herein include a liquid ejecting apparatus that includes a case and a liquid ejector. The case may be configured to be located on a first surface and include a front cover extending in a first direction perpendicular to the first surface based on the case being located on the first surface. The liquid ejector may include a lifting gear, a lifting cover, a lifting motor, a liquid ejection nozzle, a touch bar, a detection sensor, and a controller. The lifting gear may extend in the first direction. The lifting cover may be movable in the first direction along the lifting gear. The lifting motor may be coupled to the lifting cover. The liquid ejection nozzle may be disposed at an end of the lifting cover and configured to eject liquid. The touch bar may be at least partially received in the lifting cover and have a portion configured to move away from the first surface based on the touch bar contacting a liquid receiving container that is located between the liquid ejection nozzle and the first surface. The detection sensor may be configured to detect the movement of the touch bar. The controller may be configured to control the lifting motor. 
     In some implementations, the apparatus can optionally include one or more of the following features. The liquid ejector may include a fixed cover connected to the case and including the lifting gear. The lifting cover may be received in the fixed cover and movable in the first direction relative to the fixed cover. The controller may be configured to stop operation of the lifting motor based on the detection sensor detecting the movement of the touch bar. The controller may be configured to control the lifting motor to move the lifting cover toward the first surface; based on the detection sensor detecting the movement of the touch bar, move the lifting cover away from the first surface by a set height; and based on the lifting cover moving away from the first surface by the set height, stop the lifting cover. The liquid ejecting apparatus may include a rotating shaft disposed in the lifting cover and extending parallel to a direction along which the touch bar extends. The touch bar may be movable with respect to the lifting cover by pivoting with respect to the rotating shaft. The lifting cover may include a slit extending in a direction from the liquid ejection nozzle to the front cover and defined at a surface of the lifting cover that faces the first surface. At least a portion of the touch bar may be exposed through the slit. The touch bar and the slit may be located on a virtual line that connects a center of the liquid ejection nozzle and a center of the front cover based on the liquid ejection nozzle being located at the center of the front cover. The rotating shaft of the touch bar may be in parallel with the virtual line, disposed on one side of the virtual line, and spaced apart from the virtual line. The slit may have a first end and a second end opposite to the first end, and a distance between the first end of the slit and the touch bar may be smaller than a distance between the second end of the slit and the touch bar. The liquid ejecting apparatus may include an elastic member disposed in the lifting cover and configured to bias the touch bar such that an end of the touch bar is exposed from the end of the lifting cover. The touch bar may be configured to retract into the lifting cover based on the touch bar moving away from the first surface. The touch bar may include a horizontal connection portion extending between a first end and a second end, a vertical connection portion extending perpendicularly from the horizontal connection portion at the first end, and a rotating shaft disposed at the second end of the horizontal connection portion. A length of the touch bar may be greater than a length of the rotating shaft, where the length of the touch bar is determined in a direction parallel with the length of the rotating shaft. At least one of the vertical connection portion or the horizontal connection portion may include at least one hole to reduce a weight of the touch bar. The horizontal connection portion may include at least one slit that extends in a direction perpendicular to an axis of the rotating shaft. The at least one slit may be positioned at an end of the horizontal connection portion. The horizontal connection portion may include an insertion protrusion that protrudes from a surface of the horizontal connection portion and be spaced apart from the rotating shaft, the insertion protrusion configured to receive a spring. The touch bar may have a convex portion extending toward the first surface. The convex portion may have a rounded cross section and be configured to contact an end of the liquid receiving container that is located between the liquid ejection nozzle and the first surface. The detection sensor may include a transmitter and a receiver arranged to face the transmitter. Based on the touch bar moving away from the first surface, at least a portion of the touch bar may be received between the transmitter and the receiver. The touch bar may include a blocking portion configured to position in a space between the transmitter and the receiver. The detection sensor may include an infrared (IR) sensor configured to exchange IR signals. The blocking portion may have low or no permeability for an IR signal. The liquid ejecting apparatus may include a rotator disposed in the case and connected to the fixed cover. The rotor may be configured to rotate with respect to the case. The touch bar may be disposed on a virtual line connecting the center of the liquid ejection nozzle and the center of the rotator. The controller may be configured to stop the lifting motor based on the lifting cover reaching a top dead point or a bottom dead point. The controller may be configured to lower a rotation speed of the lifting motor based on the lifting cover approaching the top dead point or the bottom dead point. 
     To achieve these and other advantages and in accordance with the purpose of the present disclosure, as embodied and broadly described herein, there is provided a water ejecting apparatus including a case and a water ejection unit coupled to one side of the case. The water ejecting part may include a lifting cover that performs an elevating operation with respect to the case. The water ejection unit may include a fixed cover coupled to the case, a lifting cover movably accommodated in a vertical direction inside the fixed cover, a lifting motor coupled to the lifting cover, a gear module interworking with the lifting motor, and a water ejection nozzle to eject water. In some implementations, a circular rotator is rotatably coupled to an inside of the case. The fixed cover may be connected to the rotator. 
     In another aspect of the present disclosure, there is provided a water ejecting apparatus including a main body including a filter, a cold water generator, a hot water generator, a water pipe, and a freezing device for the cold water generator. The water ejecting apparatus may include a case that forms an outer appearance, and a water ejection unit including a water ejection nozzle. 
     In some implementations, the water ejection unit may include a motor installed inside a lifting cover, a plurality of following gears connected to a shaft of the motor, a rack coupled to at least one of the following gears and coupled to a fixed cover, and a guide member provided at the fixed cover and the lifting cover. The guide member may linearly guide an elevating operation of the lifting cover. A water ejection pipe that connects the main body with the water ejection nozzle may extend to a lower portion of the lifting cover and may be coupled to the water ejection nozzle that is provided at a lower end of the lifting cover in a horizontal direction. 
     In some implementations, a separate lighting unit may be provided near the water ejection nozzle. The lighting unit may include a guiding member exposed to the outside of the lifting cover to transfer light and a plurality of light emitting diodes (LEDs) mounted on a board installed in the lifting cover. The lighting unit can output light when the water ejection nozzle performs an elevating operation or when water is ejected from the water ejection nozzle. 
     In some implementations, the water ejection nozzle and a touch bar may be installed to be partially exposed from the water ejection unit. At least one of the water ejection nozzle and the touch bar can extend toward a front cover that forms a front surface of the main body in a front-rear direction. The touch bar may be coupled to, and rotate about, a plurality of hinges arranged in a front-rear direction. In some implementations, a rotating shaft is provided integrally with the touch bar and may be arranged in parallel with the extending direction of the touch bar. In some implementations, a non-contact infrared (IR) sensor is disposed above the touch bar to detect whether the touch bar ascends or descends in the lifting cover. 
     In some implementations, the inside of the fixed cover is provided with a metal guide bar of a cylindrical body extending in the up-down direction and a rack gear spaced apart from the metal guide bar and disposed in parallel therewith. Circular holes or recesses may be provided and arranged in a line in the rack gear, so that resistance may work against a phenomenon of bending of the rack gear. 
     In some implementations, a gear bracket may be coupled to the lifting cover. A driven gear coupled with a motor may be installed on one side of the gear bracket, and a circular guide hole which can vertically slide may be provided on the other side of the gear bracket and contact with an outer circumferential surface of the cylindrical metal guide bar. 
     In some implementations, the fixed cover or the lifting cover may be disposed at a rear of the motor and the driven gear, and a separator may be provided to partition the space in the front-rear direction, thereby preventing the motor from being short-circuited due to a water splash accident. 
     The motor may be provided as a BLDC motor, and a plurality of Hall sensors may be arranged on the motor substrate to detect a magnetic force generated in a permanent magnet of the motor rotor to detect a position of the rotor. In some implementations, a direction of rotation, a rotation speed, and other parameters of the motor may be detected by a counter electromotive force and an FG signal of the motor. 
     An operation and display part may be mounted on an upper portion of the fixed cover, and a water ejecting button may be provided at the operation and display part. 
     The water ejection pipe coupled to the water ejection unit may include a common pipe and a separate hot water pipe. The common pipe is used to deliver cold water and purified water flow selectively. The common pipe may go through a central axis of a rotator located inside the main body, and the hot water pipe may be separately connected to a hot water generating part. 
     In another embodiment of the present disclosure, the aforementioned water ejection unit may be horizontally disposed so that at least a portion of the water ejecting unit may be moved forward and backward. The water ejecting unit that can be moved back and forth may include a fixed cover that is coupled to the main body and protrudes forward, and a forward/backward lifting cover that is installed in the fixed cover and movable in a front-rear direction. A water ejection nozzle may be disposed below the forward/backward lifting cover and a pipe connected thereto may be connected to an inside of the main body. The fixed cover may include a metal guide rod of a cylindrical body extending in the front-rear direction and a rack gear spaced apart therefrom and disposed in parallel. In some implementations, circular holes or recesses may be arranged in a line between threads of the rack gear to resist a bending phenomenon. A driven gear coupled with a motor may be installed on one side of the front-rear movement guide member, and a circular guide hole which slides forward and backward may be formed in contact with an outer circumferential surface of the cylindrical metal guide bar on the other side of the front-rear movement guide member. 
     Example Operations and control methods of the apparatus provided in the present disclosure will be described. 
     In some implementations, when the user presses a water ejecting button disposed on an operation and display part, the lifting cover located at a top dead point descends on the rack gear according to driving of the motor. In the descending operation, a rotation speed of the motor may be controlled and detected by a plurality of Hall sensors installed in the motor. In this state, when the container is placed on the front surface of the main body, a part of the touch bar that is exposed to the lower surface of the lifting cover becomes to contact with the upper surface of the container, causing the touch bar to rotate upward in the lifting cover so that the non-contact sensor can detect the movement of the touch bar. As a result of the detection, the driving of the motor is immediately stopped, and a pre-programmed control program can cause the motor to reversely rotate by a predetermined amount so that the lifting cover can ascend by a predetermined height and then stop. When the motor is stopped, a water supply valve on the pipe is opened to supply water to the water ejection nozzle, and water is dispensed into the container. 
     When the water ejection is terminated, the motor rotates reversely, and when the lifting cover ascends and reaches a top dead point, the lifting cover is retrained from further ascending. Then, a hall sensor detects that the rotor stops while power is applied to the motor. Based on the detection, the motor can be immediately stopped, and the operation of the motor is terminated. 
     In some implementations, if certain resistance occurs in the motor while the lifting cover descends according to a user&#39;s water ejection operation request but a container is not detected using the touch bar, the resistance may be recognized as being caused by an obstacle (not a container). In this case, the driving of the motor is immediately stopped, and the descending operation of the lifting cover is stopped. In some implementations, when such resistance occurs in the motor in a forward rotation state, the motor may be reversely rotated, and then water ejection may be performed after the lifting cover ascends by a predetermined height. Alternatively, if such resistance occurs in the motor in the forward rotation state, the motor reversely rotates, the lifting cover ascends to a height of a top dead point, water ejection is not performed, and the operation is terminated. 
     In some implementations, as the lifting cover moves from the top dead point to the bottom dead point, the LED installed therein emits light so that the user may recognize the elevating operation. 
     As for control of a rotation speed of the motor, the motor may be controlled such that the lifting cover moves relatively slowly when it moves from the top dead point to the bottom dead point, and moves relatively quickly when it returns from the bottom dead point to the top dead point. In some implementations, when moving from the top dead point to the bottom dead point, a descending speed of the lifting cover may be controlled to gradually decrease in some sections. For example, as it approaches the bottom dead point, the descending speed of the lifting cover may be controlled to gradually decrease. 
     The method of controlling the vertically movable water ejecting unit described above may be similarly applied to a forward-backward movable water ejecting unit in another embodiment of the present disclosure. 
     An example method of assembling the apparatus provided in the present disclosure will be described. 
     In some implementations, the touch bar may be fitted to the lifting cover downward so as to be installed, and the IR sensor for detecting the touch bar is fitted downward so as to be installed inside the lifting cover. Thereafter, a nozzle assembly, in which the water ejection nozzle and the water ejection pipe are included, is fitted downward so as to be installed and subsequently fixed by screws. Thereafter, a separate separator is installed on the rear surface of the lifting cover. Then, the lifting cover is inserted into the fixed cover. Also, a pipe is connected and assembled to the fixed cover and rotator. The motor is mounted on one side of the gear bracket, and a driving gear connected to the rotating shaft of the motor is mounted on the other side. Thereafter, at least one driven gear is connected to the driving gear. Then, a motor cover is fastened to surround the motor. The motor cover may be fastened by a hook method. Further, the driving gear may be covered with a gear cover. Such a coupled configuration may be referred to as a lifting driving assembly. Thereafter, an upper end of the metal guide bar is fitted into the guide hole formed in the lifting cover opposite the rack gear, and the driven gear of the lifting driving assembly is engaged with the rack gear and fitted downward in a space between the fixed cover and the lifting cover so that the lifting driving assembly is installed in the lifting cover. Here, a lower end of the metal guide bar is inserted into and fixed to a coupling recess formed at a protrusion protruding from a lower side of the fixed cover. Then, a screw is fastened in the up-down direction from an upper end of the lifting driving assembly to couple the lifting driving assembly to the lifting cover. 
     In some implementations, the fixed cover includes a lifting gear extending in the up-down direction. In some implementations, the gear module includes a gear bracket coupled to the lifting cover and a gear that is rotatably installed on the gear bracket and engaged with the lifting gear. Accordingly, the gear can be rotated along the lifting gear according to the operation of the lifting motor, and the lifting cover can be moved relative to the fixed cover in the up-down direction. 
     In some implementations, an example method of controlling a water purifier according to the present disclosure includes placing the water receiving container on a tray that is disposed vertically downward of the water ejection nozzle, determining a height of the water receiving container, and operating the lifting motor if it is determined that the water ejection nozzle is required to descend or if there is an input from a lifting input unit. 
     Based on the operation of the lifting motor, the gear coupled to the lifting cover can be rotated and descend along the lifting gear that extends in the up-down direction and mounted to the fixed cover, so that the lifting cover and the water ejection nozzle are moved downward. 
     Based on an input from a water ejection input unit, water can be ejected from the water ejection nozzle and dispensed into the water receiving container. 
     In some implementations, the touch bar is located on an imaginary line connecting the center of the water ejection nozzle and the center of the front cover forming the front surface of the case. Alternatively or in addition, the touch bar is located on an imaginary line connecting the center of the water ejection nozzle and the center of the rotator rotatably mounted in the case. In some implementations, a rotation axis of the touch bar is parallel to an extending direction of the touch bar and is spaced apart from one side of the touch bar. In some implementations, a sensor for detecting the touch bar is located above the touch bar. In some implementations, in order for the water ejection nozzle to automatically vertically move, the touch bar, the sensor, and a return spring are disposed in the lifting cover. 
     In some implementations, when the motor operates, a sensor that detects a frequency generation (FG) signal of the motor detects top and bottom dead points of the lifting cover and controls a height of the elevating of the water ejection nozzle. In some implementations, a lifting distance is calculated using the FG signal to predict and the top dead point and the bottom dead point. 
     In some implementations, when the lifting cover and the water ejection nozzle are automatically moved up and down, the water ejection pipe, the motor, and the gear move together with the lifting cover and the water ejection nozzle. 
     In some implementations, the lifting cover and the water ejection nozzle automatically perform an elevating operation by a rack and pinion structure and the motor built in the water ejection unit. A metal cylindrical guide bar and a rack may be arranged on both sides of the fixed cover. The lifting cover may ascend, while being in contact with and supported by the metal cylindrical guide bar and the rack, so that a gap between the fixed cover and the lifting cover is equally maintained at the top dead point and the bottom dead point when the lifting cover and the water ejection nozzle perform an elevating operation. 
     In some implementations, in order to prevent warpage of the rack, the rack includes holes or recesses of the same pattern at the end of gear teeth of the rack to prevent vertical warpage. The rack can further include an H-beam structure configured to guide during vertical sliding. 
     In some implementations, a structure is provided to transmit light that is generated from a light source printed circuit board (PCB) (indicator PCB) in the lifting cover to the outside through a transparent cover component. 
     In some implementations, a cold water pipe can be configured such that a connection portion with the water ejecting piping can rotate to compensate a change in length of the cold water pipe in an internal space. In addition or alternatively, a change in length of a hot water pipe can be compensated by securing a space in the internal space of the case or the water ejection unit where the hot water pipe can flex or bend. 
     In some implementations, the metal cylindrical guide in the lifting cover may be located at one side or both sides to linearly guide movement of the lifting cover and the water ejection nozzle. 
     It is to be understood that both the foregoing general description and the following detailed description of the present disclosure are exemplary and explanatory. 
     The water ejecting apparatus according to embodiments of the present disclosure may provide one or more of the following advantages. 
     The lifting cover including the water ejection nozzle can move relatively in the up-down direction according to the driving of the lifting motor, thereby increasing user convenience and stability. For example, the water ejection nozzle can descend by simply a user input of pressing the button of the lifting input part or by automatically determining the position or presence of the water receiving container in a tray. Accordingly, user convenience may be further increased. 
     In some implementations, the water ejection nozzle can descend to a height of the water receiving container, and thus prevent water from splashing or scattering in or around the container. In addition, safety of the user may be ensured when hot water is dispensed. 
     In some implementations, since the water ejection nozzle is rotatable in the horizontal direction, the user may be able to freely move the water ejection nozzle as necessary. 
     In some implementations, in order to effectively elevate the water ejection nozzle within the limited size of the water ejection unit, the gear of the rack and pinion and the multi-step gear are applied, whereby water splashing may be reduced by adjusting a height of the water ejection nozzle, and hygiene may be improved in using the apparatus. 
     In some implementations, instead of using a mechanical container detection technology that limitedly performs detection based on types and sizes of the container, the apparatus according to the present disclosure can advantageously detect any container disposed between the water ejection nozzle and the front surface of the case through the linear touch bar disposed between the water ejection nozzle and the front surface of the case. 
     In some implementations, various pipes for water ejection may be easily disposed in the water ejection unit. Further, when the water ejection unit rotates or elevates, the movement of the pipes disposed inside the case may be minimized and thus deformation of the pipes are minimized. 
     In some implementations, containers having various heights and various inlet sizes may be accurately detected without being damaged when placed below the water ejection nozzle. For example, a paper cup having a light weight may be relatively easily collapsed or crushed due to a contact force by the touch bar that contacts the cup. However, the touch bar of the present disclosure has a lightweight structure. In addition, the apparatus according to the present disclosure is configured to adjust strength of an elastic member to provide elasticity to the touch bar. Therefore, according to the present disclosure, when the water ejection nozzle descends and the light-weight touch bar touches the paper cup, a less load is applied to the edge of the paper cup, so that the paper cup does not collapse or crush while the touch bar can move upward against the paper cup. As such, the apparatus according to the present disclosure implements a lightweight touch bar structure and contacting operation and thus may dispense water after detecting the height of a container even if the container is a paper cup, a disposable cup, etc., which is light in weight. 
     In some implementations, the apparatus of the present disclosure exposes only a small portion of the touch bar so that a contact area that contacts with the edge of the water receiving container is reduced, thereby minimizing contamination of the edge of the water receiving container. 
     In some implementations, when the touch bar that is installed at the lifting cover detects the contact of the container, the lifting cover moves upward by a certain distance and then is stopped. Therefore, interference between the water ejection nozzle and the water receiving container may be minimized, and thus a user can easily pull out the water receiving container from below the water ejection nozzle. 
     In some implementations, the apparatus according to the present disclosure can detect the height of a water receiving container of any size when it is disposed between the water ejection nozzle and the front of the case. In some implementations, the apparatus according to the present disclosure can adjust a reaction speed of the touch bar that detects the water receiving container. In some implementations, the apparatus according to the present disclosure is configured to increase strength of the parts for elevating the water ejection nozzle. In some implementations, vibration or shaking of the apparatus or parts thereof may be prevented or reduced during the elevating operation of the water ejection nozzle. In some implementations, water splashing is reduced and hygiene is improved as the height of the water ejection nozzle can be adjusted. In some implementations, inlet sizes and heights of various containers may be detected. In some implementations, an elevating operation of the water ejection nozzle may be identified even if the operation is intervened such as by a user&#39;s accidental or unconscious interference with the apparatus. In some implementations, the apparatus according to the present disclosure can reduce the number of sensors in performing water ejection after the water ejection nozzle descends near the water receiving container. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       The accompanying drawings, which are included to provide a further understanding of the present disclosure and are incorporated in and constitute a part of this application, illustrate embodiments of the present disclosure and together with the description serve to explain the principle of the present disclosure. In the drawings: 
         FIG. 1  is a view showing a water purifier according to an embodiment of the present disclosure. 
         FIG. 2  is a view showing a state where a position of a water ejection nozzle of a water purifier is changed according to an embodiment of the present disclosure. 
         FIGS. 3 and 4  are exploded views of a water purifier according to an embodiment of the present disclosure. 
         FIG. 5  is a view showing the water ejection unit of a water purifier according to an embodiment of the present disclosure. 
         FIG. 6  is an exploded view of a water ejection unit of a water purifier according to an embodiment of the present disclosure. 
         FIG. 7  is a cross-section view taken along line VII-VII′ of  FIG. 6 . 
         FIG. 8  is a cross-sectional view taken along line VIII-VIII′ together with movement. 
         FIG. 9  is a side view showing a state before and after lifting of a water ejection unit of a water purifier according to an embodiment of the present disclosure. 
         FIG. 10  is a side view of a driving motor and a gear module, which are some components of the present disclosure. 
         FIG. 11  is a rear view showing a state where a water ejection pipe is disposed at a water ejection unit of a water purifier according to an embodiment of the present disclosure. 
         FIG. 12  is a top view showing a state where a water ejection pipe is disposed at a water ejection unit of a water purifier according to an embodiment of the present disclosure. 
         FIG. 13  is a plan view comparing states of a water ejection pipe depending on whether a water ejection nozzle ascends or descends. 
         FIG. 14  is a view showing a connection state of a water ejection nozzle and a water ejection pipe. 
         FIG. 15  is a side view comparing states of a water ejection pipe depending on whether a water ejection nozzle ascends or descends. 
         FIG. 16  is a perspective view showing a coupling structure of a rotator and the water ejection pipe. 
         FIGS. 17 and 18  are front views showing a state where a lifting cover ascends or descends while a guide bar is mounted on a fixed cover. 
         FIG. 19  is an exploded perspective view of a water ejection unit equipped with a guide bar. 
         FIG. 20  is a rear perspective view of a water ejection unit equipped with a guide bar. 
         FIG. 21  is a perspective view of a third plate. 
         FIG. 22  is a front view of a portion of a third plate. 
         FIG. 23  is an example result of experimenting the degree of deflection deformation of a lifting gear before machining a reinforcing recess. 
         FIG. 24  is an example result of experimenting the degree of deflection deformation of a lifting gear after machining a reinforcing recess. 
         FIG. 25  is a front perspective view of a water purifier that outputs light. 
         FIG. 26  is a longitudinal cross-sectional view of a water ejection unit having a lighting output function. 
         FIG. 27  is a bottom view of a light source printed circuit board (PCB). 
         FIG. 28  is a perspective view of a lifting cover equipped with a diffusion member. 
         FIG. 29  is a partially cut-away perspective view of a lifting cover. 
         FIG. 30  is a perspective view of a detection sensor. 
         FIG. 31  is a perspective view of a touch bar. 
         FIG. 32  is a vertical cross-sectional view of a lifting cover showing a state where a touch bar descends. 
         FIG. 33  is a vertical cross-sectional view of a lifting cover showing a state where a touch bar ascends. 
         FIG. 34  is a bottom view of a lifting cover. 
         FIG. 35  is a graph showing an example result of measuring force required for detecting a container at each position in a structure according to the present disclosure. 
         FIG. 36  is a block diagram showing major components for an elevating operation of a water ejection nozzle. 
         FIG. 37  is a control flow chart when a water ejection nozzle descends. 
         FIG. 38  is a control flow chart of when a water ejection nozzle ascends. 
         FIG. 39  is a graph showing a change in speed of a motor when the water ejection nozzle descends. 
         FIG. 40  is a graph showing a change in speed of a motor when an obstacle is detected as a water ejection nozzle descends. 
         FIG. 41  is a view showing a control flow of a water purifier according to a first embodiment of the present disclosure. 
         FIG. 42  is a view showing a control flow of a water purifier according to a second embodiment of the present disclosure. 
         FIG. 43  is a view showing a change in height of a touch bar during an elevating operation of a water ejection nozzle. 
         FIG. 44  is a view showing a state where a lifting cover and a water ejection nozzle are manually descended. 
         FIG. 45  is a view showing a state where a lifting cover and a water ejection nozzle are automatically elevated according to the present disclosure. 
     
    
    
     DETAILED DESCRIPTION 
     Hereinafter, exemplary embodiments of the present disclosure will be described in detail with reference to the accompanying drawings. In adding reference numerals for elements in each figure, it should be noted that like reference numerals already used to denote like elements in other figures are used for elements wherever possible. Moreover, detailed descriptions related to well-known functions or configurations will be ruled out in order not to unnecessarily obscure subject matters of the present disclosure. 
       FIG. 1  is a view showing a water ejecting apparatus according to an embodiment of the present disclosure. In this document, the water ejecting apparatus may refer to a variety of water ejecting apparatuses that supply raw water in a drinkable state, such as a water purifier, a drinking water vending machine, a coffee machine, and other suitable apparatuses. As shown in  FIG. 1 , the water ejecting apparatus  1  according to the present disclosure includes a case  10  that forms an outer appearance, and a water ejection unit  20  coupled to a side of the case  10 . 
     The case  10  defines an internal space in which various components to be described later are installed. For example, as shown in  FIG. 1 , the case  10  may have a cylindrical shape. However, this is an exemplary shape and the case  10  may have various other shapes. 
     The case  10  may be made by coupling a plurality of plates. For example, the case  10  includes a front cover  100 , a rear cover  102 , a base cover  104 , a top cover  106 , and a pair of side covers  108 . Here, these covers may define front, rear, lower, upper and side surfaces of the water ejecting apparatus  1 . 
     In some implementations, the covers may be connected to one or more of the other covers through a coupling member or coupling structure. For example, the front cover  100  and the rear cover  102  are spaced apart from each other forward and backward. In addition, a pair of side covers  108  may connect to the front cover  100  and the rear cover  102  to form a circumference of the water ejecting apparatus  1 . A top cover  106  is coupled to upper ends of the front cover  100 , the rear cover  102 , and the pair of side covers  108 . In addition, a base cover  104  is coupled to lower ends of the front cover  100 , the rear cover  102 , and the pair of side covers  108 . The base cover  104  is understood as a part seated on a bottom surface on which the water ejecting apparatus  1  is installed. 
     In some implementations, the front cover  100  and the rear cover  102  are bent at a predetermined curvature, and the pair of side covers  108  may be formed as a flat plate. For example, the front cover  100  and the rear cover  102  may be formed to be convex forward and backward, respectively. The base cover  104  and the top cover  106  have rounded peripheries at their front and rear ends to correspond to the curved shapes of the front cover  100  and the rear cover  102 . 
     In some implementations, a flat portion  1002  may be provided in an up-down direction at the center of the front cover  100 . The flat portion  1002  may function as a center point (e.g., a reference point) for describing rotation of the water ejection unit  20  relative to the case, as described later in more detail. In some implementations, the flat portion  1002  may be a recessed portion in the front cover  100  that protrudes forward. The front surface of the front cover  100  can provide a portion or space in which a user disposes a container such as a cup (hereinafter, referred to as a water receiving container) for taking water. Accordingly, the flat portion  1002  can be formed so that the user may place the water receiving container more closely toward the case (e.g., the front cover  100 ) and the water receiving container may be stably supported. 
     In some implementations, the water ejecting apparatus  1  includes a tray  30  on which the water receiving container is seated. The tray  30  is connected to the base cover  104  and is disposed to protrude forward. Therefore, the tray  30  may be understood as forming a lower surface of the water ejecting apparatus  1  together with the base cover  104 . 
     The tray  30  may be positioned vertically below the water ejection nozzle  240 . In some implementations, the tray  30  may include a structure for receiving water that is not received in the water receiving container or drips outside the container. For example, the tray  30  may include a grille and a storage part below the grille. 
     The water ejection unit  20  may be coupled to, and protrude from, one side of the case  10 . For example, the water ejection unit  20  may be arranged to protrude forward from the front cover  100  and the top cover  106 . In addition, the water ejection unit  20  is coupled in communication with the case  10 . 
     The water ejection unit  20  includes a water ejection top cover  230 , water ejection lifting covers  200  and  210 , and a rotator  220 . Each cover may form an outer appearance of the water ejection unit  20 . 
     The rotator  220  is seated on the case  10 . Referring to  FIG. 3 , the rotator  220  is provided in a cylindrical shape corresponding to curvature of the front cover  100 . The rotator  220  can be disposed such that the front cover  100  is divided into upper and lower portions. Accordingly, the front cover  100  is divided into a lower front cover  1000  coupled with the base cover  104  and an upper front cover  1004  coupled with the top cover  106 . 
     The upper front cover  1004  can have a smaller cross-sectional area than the lower front cover  1000 . Therefore, the upper front cover  1004  is understood as an auxiliary portion in forming the outer appearance. The lower front cover  1000  is understood as a portion in which the flat portion  1002  is formed, and disposed on one side of the water receiving container. 
     The water ejecting lifting covers  200  and  210  can be disposed to protrude forward from the front cover  100 . For example, the water ejecting lifting covers  200  and  210  protrude convexly to the outside from the rotator  220 . The water ejection top cover  230  extends from the top cover  106  to cover the upper ends of the water ejection lifting covers  200  and  210 . 
     The water ejection top cover  230  may include various input units  270  through which a user inputs a predetermined command. The input unit  270  may be provided in various forms such as a button and a touch-sensitive element. Although the input unit  270  is illustrated as a single input element in  FIG. 1 , the input unit  270  may include multiple elements. 
     The water ejection top cover  230  may include a side wall portion  2301 . One side of the side wall portion  2301  may be rotatably coupled to the top cover  106  and the other side of the side wall portion  2301  may be coupled to an upper side of the water ejection lifting covers  200  and  210 . The one side of the side wall portion  2301  that is coupled to the top cover  106  may be higher than the other side thereof coupled to the upper side of the water ejection lifting covers  200  and  210 . Therefore, the water ejection top cover  230  may be spaced apart from the top cover  103  by the side wall portion  2301 , and the water ejection top cover  230  may be downwardly inclined toward the water ejection unit  20  from the case  10 . Accordingly, readability of the input unit  270  and a display unit may be improved. 
     A wiring hole  1061  (see  FIG. 3 ) may be formed in the top cover  106 . Various wires may pass through the wiring hole  1061  and may be connected to the input unit  270  and the display unit. 
     The water ejection top cover  230  and the side wall portion  2301  may be supported on the wiring hole  1061  (e.g., by contacting a portion surrounding the wiring hole  1061 ) and rotate with respect to the wiring hole  1061 . Therefore, wire twisting may be reduced when the water ejection top cover  230  and the side wall portion  2301  rotate. 
     The water ejection unit  20  includes a water ejection nozzle  240  through which a predetermined amount of water is dispensed. The water ejection nozzle  240  is installed to extend downward and may be disposed to be exposed below the water ejection lifting covers  200  and  210 . As described above, the tray  30  is disposed vertically below the water ejection nozzle  240 . 
     A water ejection pipe (as described herein) that is connected to the water ejection nozzle  240  is disposed inside the water ejection unit  20 . The water ejection pipe may extend from the inside of the case  10  to the inside of the water ejection unit  20  and be coupled to the water ejection nozzle  240 . 
     The water ejection unit  20  of the water ejecting apparatus  1  according to the present disclosure may be moved so that a position of the water ejection nozzle  240  is changed. This will be described in detail hereinafter. 
       FIG. 2  is a view showing an example position of the water ejection nozzle of the water ejecting apparatus that is changed according to an embodiment of the present disclosure. As shown in  FIG. 2 , the water ejection unit  20  can rotate or move vertically. Accordingly, the water ejection nozzle  240  may be rotated or moved vertically. In addition, the tray  30  may be rotated according to the rotation to the water ejection nozzle  240 . 
     First, the rotation mechanisms of the water ejection unit  20  will be described. The water ejection unit  20  may be rotated as the rotator  220  is rotated. That is, as the rotator  220  is rotated, the water ejection lifting covers  200  and  210 , the water ejection top cover  230 , and the water ejection nozzle  240  may be rotated. 
     For example, the water ejection unit  20  may be rotated along the front cover  100  and have a rotation radius of approximately 180 degrees. In addition, as the input unit  270  is formed on the water ejection top cover  230 , it is rotated together with the water ejection unit  20  to correct user convenience. 
     The tray  30  can be rotatably coupled to the base cover  104  and rotated to correspond to the water ejection unit  20 . The tray  30  may also have a rotation radius of approximately 180 degrees. 
     Second, the lifting mechanisms of the water ejection unit  20  will be described. The water ejection unit  20  includes water ejection lifting covers  200  and  210 . The water ejection lifting covers  200  and  210  may be moved up and down based on the case  10  as a whole. At least a portion of the water ejection lifting covers  200  and  210  may move up or down based on the case  10 . 
     For example, the water ejection lifting covers  200  and  210  include a lifting cover  210  which performs an elevating operation (i.e., which moves up and down) based on the case  10 . As another example, the water ejection lifting covers  200  and  210  include a fixed cover  200  connected to the case  10  and a lifting cover  210  movably coupled to the fixed cover  200 . The fixed cover  200  may be fixed to the rotator  220 . 
     In addition, the water ejection top cover  230  may be coupled to an upper end of the fixed cover  200 . The lifting cover  210  may be disposed inside the fixed cover  200  and may be moved along the fixed cover  200 . In addition, the water ejection nozzle  240  may be installed on the lifting cover  210  and moved together with the lifting cover  210 . 
     The water ejection unit  20  may be rotated and elevated independently. That is, the rotation and lifting of the water ejection unit  20  may be performed simultaneously or separately. For example, the rotation of the water ejection unit  20  may be performed while the water ejection unit  20  remains at a height (e.g., an installation position), and the lifting of the water ejection unit  20  may be performed based on a height of the water receiving container placed under the water ejection unit  20 . 
     In addition, the water ejection unit  20  may have a structure that is rotated or lifted. That is, the water ejection unit  20  may have a structure lifted without being rotated. Accordingly, the rotator  220  may be fixed to the case  10  and disposed. 
     Hereinafter, an internal configuration of the water ejecting apparatus  1  will be described in detail. 
       FIGS. 3 and 4  are exploded views of a water ejecting apparatus according to an embodiment of the present disclosure.  FIG. 4  is a partial exploded view of some components of the water ejecting apparatus of  FIG. 3  for convenience of understanding. 
     The water ejecting apparatus  1  shown in  FIGS. 3 and 4  may have a configuration capable of supplying purified water, cold water, and hot water. However, this is merely an example, and the configuration of the water ejecting apparatus  1  is not limited to those described herein. Some of the configurations may be omitted, and/or other components may be added. For the convenience of the description, piping for delivering water is omitted in  FIGS. 3 and 4 . 
     As illustrated in  FIGS. 3 and 4 , the water ejecting apparatus  1  includes a filter  40  disposed in the case  10 , a cooling tank  50 , a compressor  60 , a condenser  70  and an induction heating assembly  80 . In addition, a filter bracket  45  in which the filter  40  is mounted is provided in the case  10 . The filter bracket  45  may be seated on the base cover  104  adjacent to the front cover  100 . In addition, the rotator  220  may be seated on the filter bracket  45 . That is, the filter bracket  45  may be provided at a height corresponding to the lower front cover  1000 . Upper and lower ends of the filter bracket  45  may be provided in a semicircle shape having a curvature corresponding to the front cover  100 . In addition, the filter bracket  45  may form a space recessed backward so that the filter  40  may be accommodated therein. 
     In some implementations, the filter  40  is disposed in a space formed between the filter bracket  45  and the front cover  100 . The filter  40  is configured to purify raw water (tap water) being supplied. The filter  40  may be made by a combination of filters having various functions. That is, the filter  40  may be provided in various numbers and various shapes. 
     In some implementations, the filter bracket  45  may be provided with various valves to be connected to respective pipes. For example, a pipe through which water flowing into the filter  40  flows and a pipe through which purified water flows from the filter  40  may be connected to the filter bracket  45 . 
     In some implementations, water purified by the filter  40  may be supplied to the cooling tank  50  and the induction heating assembly  80  or the water ejection nozzle  240 . That is, water purified by the filter  40  may be supplied in the form of cold water, hot water and purified water. 
     The compressor  60  and the condenser  70  form a refrigeration cycle together with an evaporator  55  disposed in the cooling tank  50 . That is, the compressor  60  and the condenser  70  may be understood as components for supplying cold water. The compressor  60  and the condenser  70  may be seated on the base cover  104 . For example, the compressor  60  and the condenser  70  may be disposed behind the filter bracket  45 . In addition, a cooling fan  65  is disposed between the compressor  60  and the condenser  70 . The cooling fan  65  is understood as a component for cooling the compressor  60  and the condenser  70 . 
     In some implementations, the compressor  60  may be an inverter-type compressor that may control cooling capacity by varying a frequency. Therefore, purified water may be efficiently cooled, thereby reducing power consumption. In addition, the condenser  70  may be positioned at a position corresponding to a discharge port formed at the rear cover  102 . The condenser  70  may be formed by bending a plurality of flat tube type refrigerant tubes in order to efficiently use a space and improve heat exchange efficiency. In addition, the condenser  70  may be accommodated in a condenser bracket  75 . The condenser bracket  75  is provided to form a space having a shape corresponding to an overall shape of the condenser  70  to accommodate the condenser  70 . In addition, the condenser bracket  75  is formed such that portions facing the cooling fan  65  and a discharge port of the rear cover  102  are opened so that the condenser  70  may be effectively cooled. 
     A tank mounting part  53  in which the cooling tank  50  is accommodated is disposed on an upper portion of the condensation bracket  75 . The tank mounting part  53  can be a component for fixing the cooling tank  50 . For example, the tank mounting part  53  is provided so that a lower end of the cooling tank  50  is inserted. 
     The cooling tank  50  is for cooling purified water to produce cold water and is filled with a coolant for heat exchange with purified water flowing into the cooling tank  50 . In addition, an evaporator  55  for cooling the coolant may be accommodated in the cooling tank  50 . In addition, the purified water may be cooled so as to pass through the inside of the cooling tank. 
     The induction heating assembly  80 , which is for heating purified water, is configured to heat purified water according to an induction heating (IH) method. The induction heating assembly  80  may heat water at an instant and rapid rate during hot water ejection operation and may heat purified water to a desired temperature by controlling an output of a magnetic field and provide the heated purified water to the user. Therefore, hot water at a desired temperature may be dispensed according to a user&#39;s operation. 
     The induction heating assembly  80  is seated and installed on a support plate  85 . The support plate  85  extends from the filter bracket  45  to the cooling tank  50 . The support plate  85  is provided above the compressor  160 . 
     In some implementations, the water ejecting apparatus  1  includes a controller  90 . The controller  90  may control the components described above to control the driving of the water ejecting apparatus  1 . For example, the controller  90  is configured to control the compressor  60 , the cooling fan  65 , various valves, sensors, and the induction heating assembly  80 . The controller  90  may be configured to be modularized by a combination of PCBs divided into a plurality of parts for each function. 
     The controller  90  may function to heat purified water together with the induction heating assembly  80 . Accordingly, the controller  90  is disposed on one side of the induction heating assembly  80 . For example, the controller  90  may be coupled with the induction heating assembly  80  as one module and seated on the support plate  85 . 
     The water ejecting apparatus  1  includes a rotating structure of the water ejection unit  20 . That is, the water ejecting apparatus  1  includes a structure that rotatably receives the rotator  220  and the tray  30 . In some implementations, as shown in  FIGS. 3 and 4 , the rotating structure includes rotation mounting parts  225  and  227  that are coupled to the rotator  220 . The rotation mounting parts  225  and  227  are provided in a ring shape having an outer diameter corresponding to the rotator  220 . For example, guide rails are formed on the rotation mounting parts  225  and  227 , and the rotator  220  may be slidably moved along the guide rails. In addition, the rotation mounting parts  225  and  227  may be provided as a pair of plates between which ball bearings or rollers are disposed. 
     The rotation mounting parts  225 ,  227  include an upper rotation mounting part  225  that is coupled to an upper end of the rotator  220 , and a lower rotation mounting part  227  that is coupled to a lower end of the rotator  220 . The lower rotation mounting part  227  may be fixed to an upper end of the filter bracket  45 . The upper rotation mounting part  225  may be fixed to a lower end of the upper front cover  1104 . 
     In some implementations, as shown in  FIGS. 3 and 4 , a tray mounting part  300  can be coupled to the tray  30 . The tray mounting part  300  is fixed to the base cover  104  and is provided in a ring shape having an outer diameter corresponding to a front end of the base cover  104 . The tray  30  can include a tray hook  310  that is coupled to the tray mounting part  300 . The tray  30  can be detachably hooked to the tray mounting part  300 . Therefore, the user may easily remove and wash the tray  30 . 
     Hereinafter, the lifting structure of the water ejection unit  20  will be described in detail. 
       FIG. 5  is a view showing a water ejection unit of the water ejecting apparatus according to an embodiment of the present disclosure.  FIG. 6  is a view showing an exploded water ejection unit of a water ejecting apparatus according to an embodiment of the present disclosure.  FIG. 7  is a cross-sectional view of the water ejection unit  20  taken along line VII-VII′ of  FIG. 6 .  FIG. 8  are cross-sectional views of the water ejection unit  20  taken along line VIII-VIII′ of  FIG. 5 , which are in different positions. 
     As shown in  FIGS. 5 and 6 , the water ejection unit  20  includes the water ejection lifting covers  200  and  210  and the rotator  220 . The water ejection lifting covers can include the fixed cover  200  and the lifting cover  210 . For convenience of description, the water ejection top cover  230  and the water ejection nozzle  240  are omitted. 
     As described above, the fixed cover  200  is a fixed component, and the lifting cover  210  is a movable component. However, this is merely an example, and the water ejection lifting covers  200  and  210  may be configured in other relatively movable forms. For example, both the water ejection lifting covers  200  and  210  may be configured to be movable. 
     As described above, the rotator  220  is provided in a cylindrical shape. For example, a front side of the rotator  220  may form a front appearance of the water ejecting apparatus  1  together with the front cover  100 . 
     The fixed cover  200  is coupled to an outside of the rotator  220 . In some implementations, the fixed cover  200  includes a first plate  2000  coupled to the rotator  220  and a second plate  2002  extending from the first plate  2000 . The first plate  2000  and the second plate  2002  are separated for convenience of description and may be integrally formed with each other. The first plate  2000  is provided as a flat plate having a predetermined thickness. Alternatively, the first plate  2000  may be provided in the form of a plate bent with a curvature corresponding to the rotator  220 . In this case,  FIG. 7  illustrates the first plate  2000  by cutting the second plate  2002 . 
     Referring to  FIG. 7 , the first plate  2000  is provided with a water ejection opening  2004  that communicates with an internal space of the case  10 . In addition, a through hole corresponding to the water ejection opening  2004  is formed at the rotator  220 . The water ejection opening  2004  corresponds to a hole through which the water ejection pipe extending to the water ejection nozzle  240  passes. 
     In some implementations, the first plate  2000  is provided with a lifting gear  2006  and a guide rail  2008  extending in the up-down direction. Here, the surface of the first plate  2000  on which the lifting gear  2006  and the guide rail  2008  are formed is referred to as an inner surface, and the surface of the first plate  2000  coupled with the rotator  220  is referred to as an outer surface. 
     The lifting gear  2006  and the guide rail  2008  are formed to protrude from the inner surface of the first plate  2000 . The lifting gear  2006  and the guide rail  2008  may extend vertically from an upper end to a lower end of the first plate  2000 . 
     In some implementations, the lifting gear  2006  and the guide rail  2008  are respectively disposed on both sides of the water ejection opening  2004 . In  FIG. 7 , the lifting gear  2006  is located on the right side of the water ejection opening  2004  and is located on the left side of the guide rail  2008 . That is, the lifting gear  2006  and the guide rail  2008  are spaced apart from each other in a horizontal direction and extend parallel to each other in a vertical direction. 
     The lifting gear  2006  can provide a linear rack. The lifting gear  2006  has gear teeth extending in the vertical direction. For example, the lifting gear  2006  has gear teeth that face one side surface, specifically, the water ejection opening  2004 . 
     The guide rail  2008  can be configured in a smoothly extended rod shape. For example, a plurality of seating recesses  2007  and  2009  are formed on one surface, i.e., on the right surface, of the guide rail  2008  facing the lifting gear  2006 . The plurality of seating recesses  2007  and  2009  may be recessed from the right surface of the guide rail  2008  to the left side. 
     The plurality of seating recesses  2007  and  2009  include a first seating recess  2007  and a second seating recess  2009  positioned below the first seating recess  2007 . For example, the first seating recess  2007  is formed adjacent to an upper end of the guide rail  2008 , and the second seating recess  2009  is formed adjacent to a lower end of the guide rail  2008 . The first seating recess  2007  and the second seating recess  2009  may be spaced apart from each other by a maximum distance. For example, the distance between the first seating recess  2007  and the second seating recess  2009  may correspond to a distance by which the lifting cover  210  is moved. 
     The second plate  2002  can extend convexly from both ends of the first plate  2000 . For example, the second plate  2002  can be coupled with both ends of the first plate  2000  in a bent form. Accordingly, a predetermined space is formed between the first plate  2000  and the second plate  2002 . Such a space is provided with the top and bottom open. That is, upper and lower portions of the fixed cover  200  are provided in an open state. The upper portion of the fixed cover  200  can be closed by coupling the water ejection top cover  230  thereto. The lower portion of the fixed cover  200  may be closed by the lifting cover  210 . The surface of the second plate  2002  that forms the space may be referred to as an inner surface, and the surface facing the inner surface may be referred to as an outer surface. The outer surface of the second plate  2002  is a portion protruding in front of the water ejecting apparatus  1  and corresponds to a surface forming an outer appearance. Accordingly, the outer surface of the second plate  2002  may be smoothly formed for aesthetics. In addition, the inner surface of the second plate  2002  is smoothly formed so that the fixed cover  210  may be moved. For example, a guide projection  2003  that protrudes laterally is formed on the inner surface of the second plate  2002 . The guide projection  2003  extends from the top to the bottom of the second plate  2002  in the up-down direction. 
     In addition, the guide projection  2003  may be formed adjacent to each of the guide rail  2008  and the lifting gear  2006 . In  FIG. 6 , the guide projection  2003  adjacent to the guide rail  2008  is illustrated, and in  FIG. 7 , the guide projection  2003  adjacent to the lifting gear  2006  is illustrated. 
     The lifting cover  210  can be disposed inside the fixed cover  200 . For example, the lifting cover  210  is disposed in a space formed by the first plate  2000  and the second plate  2002  of the fixed cover  200 . The lifting cover  210  can be moved downward inside the fixed cover  200 . 
     The lifting cover  210  can be provided in a shape corresponding to the fixed cover  200 . For example, the lifting cover  210  has the first plate  2010  and the second plate  2012  in the same manner as the fixed cover  200 . Although the first plate  2010  and the second plate  2012  of the lifting cover  210  are separately illustrated in  FIG. 6 , this is illustrative and the first plate  201  and the second plate  2012  may be integrally formed. The second plate  2012  may be convex to the front (lower left end in  FIG. 6 ). Accordingly, a predetermined space is also formed in the lifting cover  210  by the first plate  2010  and the second plate  2012 . Also, an upper end of the lifting cover  210  is open and may be cut in a predetermined shape for coupling with the lifting motor  250  and the gear module  260  to be described later. 
     The water ejection nozzle  240  can be installed at a lower end of the lifting cover  210 . For example, an opening to which the water ejection nozzle  240  is fitted may be provided at a lower portion of the lifting cover  210 . 
     The first plate  2010  can include a water ejection recess  2014  that corresponds to the water ejection opening  2004 . The water ejection recess  2014  may be formed at a position corresponding to the water ejection opening  2004  when the lifting cover  210  is in an ascended position. Accordingly, the water ejection pipe may be extended through the water ejection opening  2004  and the water ejection recess  2014 . 
     In some implementations, an auxiliary guide rail  2015  can be provided on the first plate  2010 . The auxiliary guide rail  2015  is configured to protrude toward both sides and extends in the up-down direction. The auxiliary guide rail  2015  may be in contact with the guide projection  2003  to guide movement. 
     The second plate  2012  may include a gripping part  2013  that a user may grip. The gripping part  2013  is located on both side lower portions of the second plate  2012 . In addition, the fixed cover  200  is configured in a cut shape so that the gripping part  2013  may be exposed to the outside even when the lifting cover  210  ascends. The gripping part  2013  may be an auxiliary component for the user to manually move the lifting cover  210 . In addition, the gripping part  2013  may be provided in various forms so that the user may conveniently move the lifting cover  210 . 
     In some implementations, the second plate  2012  may be formed with an indented check recess  2012   a  at an upper end thereof. Through the check recess  2012   a , a weight of the lifting cover  210  may be reduced. Through the check recess  2012   a , the lifting motor  250  and the gear module  260  may be installed or the installed lifting motor  250  and the gear module  260  may be checked. 
     In some implementations, the second plate  2012  can include a lifting bracket  2016  coupled to a lifting motor  250  and a gear module  260 , which will be described later. The lifting bracket  2016  includes a motor coupling part  2017  to which the lifting motor  250  is coupled and a gear seating part  2018  to which the gear module  260  is coupled. 
     The water ejection unit  20  further includes the lifting motor  250  and the gear module  260  interworking with the lifting motor  250 . 
     The lifting motor  250  includes an external power supply or a main PCB, that is, an electric wire and a connector  2504  connected to the controller  90 , a motor shaft  2500  rotated by supplied power, and a motor gear  2502  connected to the motor shaft  2500 . The motor gear  2502  can include a spur gear in which gear teeth are cut to be parallel to the motor shaft  2500 . 
     For reference, a signal detection unit  650 , which will be described later, may be connected to the electric wire and the connector  2504  connected to the lifting motor  250 . 
     As described above, the lifting motor  250  is coupled to the motor coupling part  2017 . Thus, the lifting motor  250  may be coupled to the lifting cover  210 . For example, the lifting motor  250  may be coupled to the lifting cover  210  such that the motor shaft  2500  extends in a horizontal direction and the motor gear  2502  is disposed at the rear. An example of the lifting motor  250  includes a BLDC motor having a brake function. 
     The gear module  260  may include a plurality of gears that can be rotated by the lifting motor  250 . The gear module  260  can include a gear bracket  2600  for rotatably fixing a plurality of gears. The gear bracket  2600  may be seated on an upper portion of the motor coupling part  2017  and coupled by a coupling member. 
     The gear bracket  2600  includes gear guide protrusions  2602  that protrude from both sides and can be brought into contact with the guide projection  2003 . The gear guide projection  2602  may be provided as a pair spaced apart from each other and protruding such that the guide projection  2003  is disposed therebetween. For example, the guide projection  2003  and the gear guide projection  2602  may be disposed in a state where they are fitted with each other. Accordingly, the gear bracket  2600  may be guided and moved in an up-down direction along the guide projection  2003 . 
     In some implementations, the gear bracket  2600  includes a guide rail projection  2604  that protrudes backward. The guide rail projection  2604  may be disposed to contact the inner surface of the guide rail  2008 . Accordingly, the gear bracket  2600  may be guided in the up-down direction along the guide rail  2008 . 
     For example, the guide rail projection  2604  may be in close contact with an inner surface of the guide rail  2008  to receive an external force. In some implementations, a force that the guide rail projection  2604  pushes the inner surface of the guide rail  2008  to the outside may be generated. Accordingly, the guide rail projection  2604  may be inserted into the first and second seating recesses  2007  and  2009 . 
     Referring to  FIG. 8 , the gear module  260  includes a first gear  2606 , a second gear  2607 , a third gear  2608 , and a fourth gear  2609  mounted on the gear bracket  2600 . Here, the number and shape of the gears are merely illustrative. 
     The first gear  2606  is a gear engaged with the motor gear  2402 . The second gear  2607  is coaxially connected to the first gear  2606 . In some implementations, the first gear  2606  and the second gear  2607  may be formed as one gear. A size (diameter) of the first gear  2606  may be larger than a size (diameter) of the second gear  2607 . 
     The third gear  2608  is a gear engaged with the second gear  2607 . The fourth gear  2609  is coaxially connected to the third gear  2608 . In some implementations, the third gear  2608  and the fourth gear  2609  may be formed as one gear. A size (diameter) of the third gear  2608  may be formed to be larger than a size (diameter) of the fourth gear  2609 . 
     The fourth gear  2609  is engaged with the third gear  2608 . In some implementations, the third gear  2608  is formed on the fixed cover  200  and is a fixed component. In addition, the fourth gear  2609  is mounted on the gear bracket  2600  and is a component coupled to the lifting cover  210 . Therefore, as the fourth gear  2609  is rotated, the lifting cover  210  may be moved. 
     As described above, as the gear module  260  includes the plurality of gears, the gear module  260  may function as a reduction gear. 
     An example lifting mechanism of the lifting cover  210  will be described with reference to  FIG. 8 .  FIG. 8( a )  shows that the lifting cover  210  is in an ascended position, and  FIG. 8( b )  shows the lifting cover  210  is a descended position. Also,  FIG. 8( a )  shows that the guide rail projection  2604  is inserted into the first seating recess  2007  and  FIG. 8( b )  shows that the guide rail projection  2604  is inserted into the second seating recess  2009 . Therefore, the lifting cover  210  may be moved by a distance between the first and second seating recesses  2009 . In some implementations, the water ejection nozzle  240  that is installed on the lifting cover  210  may be lifted or lowered by a moving distance of the lifting cover  210 . 
     &lt;Water Ejection Pipe Arrangement Structure&gt; 
       FIG. 9  illustrates side views of the water ejection unit of the water ejecting apparatus in ascended and descended positions according to an embodiment of the present disclosure.  FIG. 10  is a side view of the lifting motor and the gear module. 
     Referring to  FIG. 9 , when the lifting cover  210  ascends or descends, the water ejection nozzle  240  coupled to the lower side of the lifting cover  210  ascends or descends together. In addition, the water ejection nozzle  240  is connected to the water ejection pipe  400 . 
     After passing through the water ejection opening ( 2004 , see  FIG. 7 ) and the water ejection recess ( 2014 , see  FIG. 6 ), the water ejection pipe  400  may extend to the inside of the water ejection unit  20  from the inside of the case  10  and may be connected to the water ejection nozzle  240 . 
     In some implementations, when the water ejection pipe  400  is placed inside the lifting cover  210 , the water ejection pipe  400  can ascend or descend as the lifting cover  210  ascends or descends. In some implementations, the water ejection pipe  400  may be rotated together as the water ejection unit  20  is rotated, when the water ejection pipe  400  is disposed inside the lifting cover  210 . 
     The water ejection pipe  400  that is received inside the lifting cover  210  may be disposed in an empty space provided below the lifting motor  250  and the gear module  260 . 
     Referring to the drawing, a gear module  260  is disposed at the rear of the lifting motor  250 . That is, the lifting motor  250  is disposed in front of the gear module  260 . Here, the rear may refer to a direction close to the case  10 . 
     Also, a space  211  is formed below the gear module  260 , and the water ejection pipe  400  may be introduced into the inside of the lifting cover  210  and connected to the water ejection nozzle  240  through this space  211 . 
     In some implementations, the gear module  260  includes a plurality of gears. In addition, a motor gear  2502  is connected to the motor shaft  2500  of the lifting motor  250 . The gear module  260  can include a first gear  2606 , a second gear  2607 , a third gear  2608 , and a fourth gear  2609 . The first gear  2606 , the second gear  2607 , the third gear  2608 , and the fourth gear  2609  may all be disposed at the rear of the lifting motor  250 . In addition, all of the first gear  2606 , the second gear  2607 , the third gear  2608 , and the fourth gear  2609  may be positioned above the motor shaft  2500  of the lifting motor  250 . 
     In some implementations, rotating shafts of the first gear  2606  and the second gear  2607  are positioned above the rotating shaft of the motor gear  2502  and may be positioned to be eccentric to one side. Here, ‘one side’ refers to a direction in which the lifting gear  2006  is formed. 
     In some implementations, the rotating shafts of the third gear  2608  and the fourth gear  2609  may be positioned above the rotating shafts of the first gear  2606  and the second gear  2607  and positioned to be eccentric to one side. Therefore, the lifting gear  2006  engaged with the fourth gear  2609  may be disposed on one side spaced apart from the center at the maximum. 
     Accordingly, the larger space  211  in which the water ejection pipe  400  is accommodated may be secured at a lower side of the gear module  260 . 
     If the motor gear  2502  connected to the motor shaft  2500  of the lifting motor  250  is directly engaged with the lifting gear  2006  to rotate or if only one gear is connected between the motor gear  2502  and the lifting gear  2006 , it may be difficult to secure a space for disposing the gear as the gear increases. Meanwhile, when a plurality of gears are connected between the motor gear  2502  and the lifting gear  2006  as in the present disclosure, the size of the gears may be reduced and the gears may be installed only on one side, thereby facilitating securing of a space inside the lifting cover  210 . For example, a space for accommodating the water ejection pipe  400  may be secured. 
     In addition, when a plurality of gears are connected between the motor gear  2502  and the lifting gear  2006 , a lifting speed may be finely adjusted by utilizing a gear ratio. That is, it is easy to control the lifting speed of the lifting cover  210 . 
     According to the present disclosure, the water ejection unit  20  can be configured to perform an elevating operation and a rotation operation with respect to the case  10 . The water ejection lifting covers  200  and  210  that form an outer appearance of the water ejection unit  20  are formed to be convex forward so that the user may easily grip the water ejection unit  20 . Therefore, a space may be created therein, and the lifting motor  250 , the gear module  260 , and the water ejection pipe  400  may be accommodated in the space. For example, the lifting motor  250  may be disposed at the center which is convex forward. 
     In some implementations, one side of the water ejection pipe  400  is received inside the lifting cover  210  and is connected to the water ejection nozzle  240 . Also, the water ejection pipe  400  is disposed inside the rotator  220  through the water ejection recess  2014  formed at the rear of the lifting cover  210  and the water ejection opening  2004  formed at the rear of the fixed cover  200 , and as a result, the water ejection pipe  400  is disposed inside the case  10 . 
     For reference, the rotator  220  can include a through hole  221  (see  FIG. 12 ) that communicates with the water ejection opening  2004 . Therefore, the water ejection pipe  400  passing through the water ejection recess  2014  and the water ejection opening  2004  may be disposed inside the rotator  220  and the case  10  through the through hole  221  (see  FIG. 12 ). 
     In some implementations, the water ejection pipe  400  may be made of an elastic material, such as rubber or silicone, so as to be bent or spread during an elevating operation of the lifting cover  210 . 
     In the above case, when the lifting cover  210  and the water ejection nozzle  240  perform an elevating operation, the water ejection pipe  400  is bent or spread in the space  211  of the lifting cover  210  to correspond to the elevating operation of the lifting cover  210 , and further, cold water, purified water, and hot water may be supplied to the water ejection nozzle  240  regardless of height of the lifting cover  210  and the water ejection nozzle  240 . 
     For example, when the lifting cover  210  and the water ejection nozzle  240  perform the elevating operation, the water ejection pipe  400  may be bent or spread in the up-down direction in the space  211  of the lifting cover  210  to flexibly cope with the elevating operation of the lifting cover  210 . 
     Referring to  FIG. 9 , a touch bar  610 , which will be described later, is exposed to a bottom surface of the lifting cover  210 . The touch bar  610  may be exposed by a first height h 1  before coming into contact with the water receiving container  2 . When the lifting cover  210  descends, the touch bar  610  comes into contact with the water receiving container  2  and the touch bar  610  ascends. In addition, a detection sensor can be disposed above the touch bar  610 , and detect the lifting of the touch bar  610  and a height of the water receiving container. 
     As described above, when the touch bar  610  comes into contact with the water receiving container  2 , the touch bar  610  ascends to be exposed to the bottom surface of the lifting cover  210  by a second height h 2  smaller than the first height h 1 , before coming into contact with the water receiving container  2 . 
       FIG. 11  is a rear view illustrating that a water ejection pipe is disposed at the water ejection unit of the water ejecting apparatus according to an embodiment of the present disclosure.  FIG. 12  is a top view illustrating that a water ejection pipe is disposed at the water ejection unit of the water ejecting apparatus according to an embodiment of the present disclosure. Referring to  FIGS. 11 to 12 , the water ejection pipe  400  may include a first water ejection pipe  410  through which hot water is ejected and a second water ejection pipe  420  through which cold water and purified water are ejected. 
     The first water ejection pipe  410  and the second water ejection pipe  420  are connected to one water ejection nozzle  240 . In this embodiment, a bridge  500  may be further included to connect the rotator  220  with the fixed cover  200  of the water ejection unit  20 . The bridge  500  integrally connects the rotator  220  and the fixed cover  200 . Both ends of the bridge  500  are fixed to the rotator  220  and the fixed cover  200 . 
     The water ejection pipe  400  may enter the water ejection unit  20  from the case  10  through the space between the bridges  500 . For example, the water ejection pipe  400  inside the case  10  may enter the inside of the fixed cover  200  through the through hole  2203  of the rotator  220 . In addition, the water ejection pipe  400  that enters the inside of the fixed cover  200  may enter the inside of the lifting cover  210  and may be connected to the water ejection nozzle  240 . With the configuration of the bridge  500 , the rotator  220  and the fixed cover  200  may be spaced apart from each other by a length of the bridge  500 . 
     In some implementations, a space S in which the water ejection pipe  400  moves may be secured by a distance between the rotator  220  and the fixed cover  200 . For example, when the lifting cover  210  ascends or descends, the water ejection pipe  400  is bent or spread so as to be changed in shape. Through the gap between the rotator  220  and the fixed cover  200 , the space S in which the water ejection pipe  400  may move in the front-rear direction (up-down direction in  FIG. 12 ) is secured and the water ejection pipe  400  may be deformed more easily. 
     In this embodiment, the first gear  2606  rotates in engagement with the motor gear  2502 , and the second gear  2607  is coaxially disposed with the first gear  2606  and rotates in engagement with the third gear  2608 . In addition, the fourth gear  2609  is coaxially disposed with the third gear  2608 , and rotates in engagement with the lifting gear  2006 . 
     In some implementations, the first gear  2606  and the motor gear  2502 , which rotate in engagement with each other, may be formed of different materials. The second gear  2607  and the third gear  2608 , which rotate in engagement with each other, may also be formed of different materials. The fourth gear  2609  and the lifting gear  2006 , which rotate in engagement with each other, may also be formed of different materials. If the gears rotating in engagement with each other are formed of the same material, adsorption based on friction may occur. However, if the gears that rotate in engagement with each other are formed of heterogeneous materials rather than homogeneous materials as in the present disclosure, frictional adsorption may be prevented. In addition, noise may be prevented. In an example, at least one of the plurality of gears described above may be formed of engineering plastic. As another example, at least one of the plurality of gears described above may be formed of an elastomer material having rubber properties. 
     In some implementations, according to the present disclosure, the water ejection unit  20  may be rotated relative to the case  10  by the rotator  220 . 
       FIG. 13  illustrates plan views of a water ejection pipe in different positions depending on whether the water ejection nozzle ascends or descends.  FIG. 14  illustrates an example connection scheme of the water ejection nozzle and the water ejection pipe.  FIG. 15  illustrates side views of the water ejection pipe in different positions depending on whether the water ejection nozzle ascends or descends.  FIG. 16  is a perspective view of an example coupling structure of the rotator and the water ejection pipe. 
     Referring to the drawings, the rotator  220  has a cylindrical shape having a short height compared to a diameter thereof. The rotator  220  includes an upper guide bracket  221  and a lower guide bracket  222  spaced apart from each other on the upper and lower portions. Also, a fastening portion  2201  protrudes from an inner surface of the rotator  220 , and fastening holes  2211  and  2221  are provided at intervals in a circumferential direction on the upper guide bracket  221  and the lower guide bracket  222 . A bolt or other suitable fastening element is inserted into the fastening portion  2201  through the fastening holes  2211  and  2221  so that the upper and lower guide brackets  221  and  222  may be fastened to the rotator  220 . 
     In some implementations, a plurality of fastening hooks  2212  and  2222  are provided along the circumference of the upper guide bracket  221  and the lower guide bracket  222 , and fastening protrusions  2202  may be provided on the inner surface of the rotator  220 . The fastening hooks  2212  and  2222  and the fastening protrusions  2202  may be locked to each other and serve to temporarily fix the upper guide bracket  221  and the lower guide bracket  222  when the upper guide bracket  221  and the lower guide bracket  222  are coupled. 
     In some implementations, a circular upper center ring  2213  and a lower center ring  2223  are provided at the centers of the upper guide bracket  221  and the lower guide bracket  222 . The upper guide bracket  221  and the lower guide bracket  222  are formed such that an upper connection portion  2214  and a lower connection portion  2224  horizontally extend from an inner surface toward the upper center ring  2213  and the lower center ring  2223 , respectively. The upper center ring  2213  and the lower center ring  2223  are connected to and supported by the upper guide bracket  221  and the lower guide bracket  222  by means of the upper connection portion  2214  and the lower connection portion  2224 . The upper and lower connection portions  2214  and  2224  are configured in a fan shape and have a plurality of through holes therein. 
     The upper center ring  2213  and the lower center ring  2223  can be used to inform an operator of an installation position of the water ejection pipe  400  for delivering water. The upper center ring  2213  and the lower center ring  2223  are provided at the center of the rotator  220  and functions as a rotation center as the rotator  220  is rotated. 
     In some implementations, a T connector  430  may be provided at the upper center ring  2213  and the lower center ring  2223 . A second water ejection pipe  420  is connected to an opening  431  on one side of the T connector  430 , and extends toward the water ejection unit  20  and connected to the water ejection nozzle  240 . A cold water pipe  440  is connected to an upper portion of the other two sides (vertically upper and vertically lower openings) of the T connector  430 , and a purified water pipe  450  is connected to a lower portion of the other two sides of the T connector  430 . In some implementations, the purified water pipe  450  and the cold water pipe  440  may each be connected to the T connector  430  by a rotation pipe  460 . 
     For example, the cold water pipe  440  and the purified water pipe  450  pass through the upper center ring  2213  and the lower center ring  2223 , respectively, and the T connector  430  is located in a space between the upper center ring  2213  and the lower center ring  2223 . Accordingly, the T connector  430  may not be changed in position and always maintained at a uniform position. When the rotator  220  is rotated, the T connector  430  may be rotated about the rotation pipe  460  as a shaft and twisting of the pipe forming a flow path for water ejection may be prevented. 
     A through hole  2203  is provided in the rotator  220  so that the water ejection pipe  400  may pass therethrough. Through the through hole  2203 , the water ejection pipe  400  may extend to the inside of the water ejection unit  20  via the upper guide bracket  221  and the lower guide bracket  222  of the rotator  220 . In some implementations, the configuration of the through hole  2203  may generate a predetermined fixing force for holding the water ejection pipe  400 , and the first water ejection pipe  410  and the second water ejection pipe  420  may be prevented from entangling or twisting while the water ejection unit  20  rotates, ascends or descends. 
     In some implementations, the first water ejection pipe  410 , which is connected to the induction heating assembly  80  and supplied with hot water, may be directly connected to the water ejection nozzle  240 . Therefore, when hot water is ejected, the water in the hot water tank may be immediately ejected and quality of the hot water is improved. In embodiments where a flow path used for cold water or purified water is also used for hot water, a temperature of hot water delivered shortly after cold water or purified water being dispensed may be lower than an intended temperature because the cold water or purified water remain in the flow path. However, when the separate first water ejection pipe  410  is connected to the water ejection nozzle  240 , hot water of the hot water tank may be supplied to the water ejection nozzle  240  without temperature loss. 
     In some implementations, unlike the cold water pipe  440  and the purified water pipe  450 , the first water ejection pipe  410  may be connected to the water ejection nozzle  240  by way of the outside of the upper centering ring  2213  and the lower center ring  2223  or may be connected to the water ejection nozzle  240  by way of a separate fixed guide provided outside the upper center ring  2213  and the lower center ring  2223 , rather than passing through the upper center ring  2213  and the lower center ring  2223 . 
     According to the features described above, when the water ejection unit  20  is rotated, the pipes  410 ,  420 ,  440 , and  450  that form the flow path for water ejection may be prevented from being entangled or twisted. 
       FIG. 13( a )  shows an example position of the second water ejection pipe  420 , which is used to deliver cold water and purified water, as the lifting cover  210  descends.  FIG. 13( b )  shows an example position of the second water ejection pipe  420  as the lifting cover  210  ascends. 
     Referring to  FIGS. 13 and 14 , the second water ejection pipe  420  is connected to the opening  431  on one side of the T connector  430 . For example, one side of the T connector  430  is connected to a connection pipe  432  which is connected and bent in a horizontal direction, and the connection pipe  432  has the opening  431  for connecting the second water ejection pipe  420 . For example, the connection pipe  432  may be bent in an L shape. 
     In some implementations, the T connector  430 , or the opening  431  on one side of the connection pipe  432 , is formed to face in the horizontal direction. For example, one side of the second water ejection pipe  420  that is connected to the opening  431  of the T connector  430  has a bent shape corresponding to an inner circumferential surface of the rotator  220 . That is, the second water ejection pipe  420  is bent in the horizontal direction inside the rotator  220 . 
     In some implementations, the second water ejection pipe  420  is configured to have and secure a length sufficient to cope with the rotation and elevating operation of the water ejection unit  20 . With this configuration, when the water ejection unit  20  rotates, the second water ejection pipe  420  can rotate together with the rotator  220  without deformation of the second water ejection pipe  420 , and thus cold water and purified water may be easily ejected through the second water ejection pipe  420 . 
     When the lifting cover  210  descends, the second water ejection pipe  420  is pulled downward. For example, the second water ejection pipe  420  that is bent inside the rotator  220  may be spread out. As the lifting cover  210  descends, the second water ejection pipe  420  is spread or straightened (e.g., changing from the state of  FIG. 13( b )  to the state of  FIG. 13( a ) ), and also descended (e.g., pulled down) along with the water ejection nozzle  240 . 
     In some implementations, as the T connector  430  rotates close to the water ejection unit  20 , the second water ejection pipe  420  may be lowered along with the water ejection nozzle  240  more easily. For example, the T connector  430  may rotate about the rotation pipe  460 . 
     Also, as the lifting cover  210  descends, the second water ejection pipe  420  is pulled downward and the T connector  430  may rotate close to the water ejection unit  20  (clockwise in  FIG. 13 ). That is, as the lifting cover  210  descends, the second water ejection pipe  420  is spread and the T connector  430  rotates from the state of  FIG. 13( b )  to the state of  FIG. 13( a )  by a corresponding force. As a result, a descending distance of the second water ejection pipe  420  is increased and the descending operation of the second water ejection pipe  420  may be more easily performed. 
     As the lifting cover  210  ascends, the second water ejection pipe  420  can be pushed upward. For example, the second water ejection pipe  420  may be bent inside the rotator  220 . As the lifting cover  210  ascends, the second water ejection pipe  420  becomes bent (e.g., changing from the state of  FIG. 13( a )  to the state of  FIG. 13( b ) , and also ascended along with the water ejection nozzle  240 . In addition, while the T connector  430  rotates away from the water ejection unit  20 , the second water ejection pipe  420  may be easily elevated along the water ejection nozzle  240 . For example, the T connector  430  may rotate about the rotation pipe  460 . 
     Also, as the lifting cover  210  ascends, the second water ejection pipe  420  is pushed upward and the T connector  430  may rotate away from the water ejection unit  20  (in a counterclockwise direction in  FIG. 13 ). That is, when the lifting cover  210  ascends, the second water ejection pipe  420  is bent and the T connector  430  rotates from the state of  FIG. 13( a )  to the state of  FIG. 13( b )  by a corresponding force. As a result, a rising distance of the second water ejection pipe  420  is increased, and the rising operation of the second water ejection pipe  420  may be more easily performed. 
       FIG. 15( a )  shows the first water ejection pipe  410  that ejects hot water when the lifting cover  210  is in a descended position.  FIG. 15( b )  shows the first water ejection pipe  410  that ejects hot water when the lifting cover  210  is in an ascended position. Referring to the drawings, the first water ejection pipe  410  is bent in the up-down direction. For example, the first water ejection pipe  410  extends from the lower side to the upper side inside the case  10 , passes from the rotator  220  to the water ejection unit  20  side, and is then bent to be convex upward. Then, after being accommodated inside the water ejection unit  20 , the first water ejection pipe  410  is connected to the water ejection nozzle  240 . 
     Referring to  FIG. 15( b ) , it can be seen that, in a state where the lifting cover  210  ascends, the first water ejection pipe  410  is bent to be convex upward, and an uppermost end  410   a  is adjacent to an upper end of the rotator  220 . For example, the first water ejection pipe  410  is configured to have and secure a length sufficient to correspond to or accommodate the rotation and elevating operation of the water ejection unit  20 . With this configuration, when the water ejection unit  20  moves up and down and the lifting cover  210  descends, the first water ejection pipe  410  is pulled downward. 
     For example, the first water ejection pipe  410  that is bent inside the rotator may be spread. As the lifting cover  210  descends, the first water ejection pipe  410  is spread out (e.g., changing from the state of  FIG. 15( b )  to the state of  FIG. 15( a ) ) and also descended (e.g., pulled down) along the water ejection nozzle  240 . As the first water ejection pipe is spread based on the lifting cover  210  descending, the uppermost end  410   b  of the first water ejection pipe  410  is lowered to be adjacent to the lower end of the rotator  220 . 
     As the lifting cover  210  ascends during the elevating operation of the water ejection unit  20 , the first water ejection pipe  410  is pushed upward. For example, the first water ejection pipe  410  may be further bent upward from the inside of the rotator  220 . As the lifting cover  210  ascends, the first water ejection pipe  410  is further bent to be convex upward (e.g., changing from a state  FIG. 15( a )  to a state of  FIG. 15( b ) ) and also ascended along with the water ejection nozzle  240 . When the first water ejection pipe  410  is bent based on the lifting cover  210  ascending as described above, the uppermost end  410   a  of the first water ejection pipe  410  ascends to be adjacent to the upper end of the rotator  220 . 
     According to the present disclosure, as described above, the first water ejection pipe  410  and the second water ejection pipe  420  may be made of an elastic material, and a space in which the first water ejection pipe  410  and the second water ejection pipe  420  can be bent and spread is provided inside the water ejection lifting covers  200  and  210  and the rotator  220 . Therefore, changes in length of the first water ejection pipe  410  and the second water ejection pipe  420  may be effectively buffered or compensated during the rotation and elevating operation of the lifting cover  210 . Accordingly, it is possible to flexibly cope with the rotation operation and the elevating operation of the lifting cover  210 , and as a result, the elevating and rotation operations of the lifting cover  210  and the water ejection nozzle  240  may be smoothly performed. 
     &lt;Guide to Elevating Operation&gt; 
     In some instances, when the lifting cover  210  performs an elevating operation along the fixed cover  200 , the lifting cover  210  may wobble or the elevating operation of the lifting cover  210  may be unstable due to clearance. For example, when the lifting cover  210  moves downward, the lifting cover  210  and the fixed cover  200  are gradually separated, and accordingly, as the clearance increases, causing a bending phenomenon and a wobbling phenomenon. 
     According to the present disclosure, a guide unit is provided for eliminating the clearance so that the lifting cover  210  performs an elevating operation linearly along the fixed cover  200 . For example, where an elevating length (stroke distance) of the lifting cover  210  is longer, it is necessary to further reduce the clearance between the lifting cover  210  and the fixed cover  200 . 
       FIGS. 17 to 18  are front views showing that the lifting cover moves up and down while the guide bar is attached to the fixed cover.  FIG. 19  is an exploded perspective view of a water ejection unit equipped with a guide bar.  FIG. 20  is a rear perspective view of a water ejection unit equipped with a guide. Referring to  FIGS. 17 to 20 , a guide bar  710  may be mounted to the fixed cover  200 . The guide bar  710  may be mounted on a rear surface of the fixed cover  200 . For example, the rear surface of the fixed cover  200  may refer to the first plate  2000 . The rear surface of the fixed cover  200  is coupled to the rotator  220 . A rack-shaped lifting gear  2006  is provided at the rear adjacent to the rotator  220  inside the fixed cover  200 . The lifting gear  2006  may be integrally formed with the rear surface of the fixed cover  200 . Alternatively, the lifting gear  2006  may be provided as a separate member and coupled to the rear surface of the fixed cover  200 . In the latter case, the lifting gear  2006  may be provided on one side of the third plate  2005 , and the third plate  2005  may be coupled to an inside of the fixed cover  200 . 
     With the configuration of the guide bar  710 , clearance in a horizontal direction during the vertical movement of the lifting cover  210  may be improved. 
     In some implementations, the guide bar  710  may be made of a metal material. In some implementations, the guide bar  710  may be formed in a cylindrical shape. In some implementations, the guide bar  710  may be configured to face the lifting gear  2006  that is disposed on the fixed cover  200 . In some implementations, the guide bar  710  may be disposed on both sides. 
     Therefore, during the elevating operation of the lifting cover  210 , both sides of the lifting cover  210  are supported in contact with each other at the uppermost end and lowermost end, whereby the elevating operation of the lifting cover  210  may be maintained linearly. That is, with the configuration of the guide bar  710  as described above, when the lifting cover  210  is positioned at the uppermost and lowermost ends, clearance remains the same and the elevating operation of the lifting cover  210  is maintained in a straight line without wobbling. 
     An upper end of the guide bar  710  may be fixed to an upper end of the other side of the third plate  2005  (left side in  FIG. 18 ). In addition, a lower end of the guide bar  710  may be fixed to a lower end of the other side at the rear of the fixed cover  200  (left side in  FIG. 18 ). 
     Further, a fourth plate  2005   a  (see  FIG. 19 ) that extends in a horizontal direction may be provided at an upper end of the third plate  2005 . In some implementations, the fourth plate  2005   a  includes a guide bar mounting recess  2005   b  which is concave upward on the bottom surface. In some implementations, the upper end of the guide bar  710  may be inserted and fixed to the guide bar mounting recess  2005   b . When the fourth gear  2609  ascends, the third plate  2005  may also function as a stopper that prevents the fourth gear  2609  from further ascending from a top dead point of the fourth gear  2609 . 
     In some implementations, a guide bar mounting protrusion  2000   a  which is convex forward is provided at a lower end of the rear surface of the fixed cover  200 . Also, the guide bar mounting protrusion  2000   a  can include a guide bar mounting recess  2000   b  concave downward from an upper surface thereof. Further, a lower end of the guide bar  710  may be inserted into and fixed to the guide bar mounting recess  2000   b.    
     In some implementations, a guide bar passage hole through which the guide bar  710  passes may be provided in the lifting cover  210 . Therefore, when the lifting cover  210  ascends in a state where the guide bar  710  is inserted in the guide bar passage hole, the elevating operation of the lifting cover may be guided linearly by the guide bar  710 . 
     For example, an auxiliary protrusion  2610  that protrudes backward may be provided in the gear bracket  2600  through which the guide bar  710  passes. In addition, guide bar passage holes  2613  and  2614  through which the guide bars  710  pass may be provided in the auxiliary protrusions  2610 . The auxiliary protrusion  2610  may be provided in plurality, and the plurality of auxiliary protrusions  2610  may be spaced apart from each other in the up-down direction. For example, the auxiliary protrusions  2610  may include an upper auxiliary protrusion  2611  and a lower auxiliary protrusion  2612 . In addition, guide bar passage holes  2613  and  2614  may be provided in the auxiliary protrusions  2611  and  2612 , respectively. Therefore, clearance between the fixed cover  200  and the lifting cover  210  may be more reliably eliminated. 
     In some implementations, anti-friction members  2615  and  2616  that reduce friction between the guide bar  710  and the auxiliary protrusions  2611  and  2612  may be inserted into the guide bar passage holes  2613  and  2614 , respectively. Therefore, the elevating operation of the lifting cover  210  may be performed more smoothly. 
     When the guide bar  710  is provided as described above, one side of the lifting cover  210  may be in contact with and supported by the guide bar  710 , and the other side of the lifting cover  210  may be in contact with and supported by the lifting gear  2006 . Therefore, as both sides of the lifting cover  210  are in contact with and supported by the fixed cover  200 , clearance between the fixed cover  200  and the lifting cover  210  is more reliably removed, and as the lifting cover  210  ascends and descends linearly in the up-down direction, the elevating operation of the lifting cover  210  may be stably performed. 
     In some implementations, the third plate  2005  may include an anti-wobble recess  2005   f  extending in the up-down direction on an outer surface of one side on which the lifting gear  2006  is formed. In some implementations, the gear bracket  2600  may be configured such that anti-wobble protrusions  2618  and  2619  protruding inward from the rear are formed on an upper side and a lower side and spaced apart from each other so as to be inserted into the anti-wobble recess  2005   f . The anti-wobble protrusions  2618  and  2819  may be provided on opposite sides of the auxiliary protrusions  2611  and  2612 , respectively. When the anti-wobble protrusions  2618  and  2619  are inserted into the anti-wobble recess  2005   f  as described above, wobbling in the front-rear direction may be prevented when the gear bracket  2600  and the lifting cover  210  move up and down. 
     In some implementations, the third plate  2005  may function as an anti-water splash barrier to prevent water from entering the rotator  220  through the water ejection opening  2004  or the like. To this end, the third plate  2005  may be provided to cover at least a portion of the water ejection opening  2004  and the through hole  2203 . 
     For reference, reference numeral ‘ 281 ’ in  FIGS. 18 and 20  denotes ‘gear cover’ covering the gear module  260 , and reference numeral ‘ 282 ’ denotes ‘motor cover’ covering the lifting motor  250 . 
     Hereinafter, an example assembly procedure of the gear bracket  2600 , the guide bar  710 , the first plate  2000 , and the third plate  2005  will be described. First, the guide bar  710  can be coupled with the gear bracket  2600 . For example, the guide bar  710  is fitted to the guide bar passage holes  2613  and  2614  of the auxiliary protrusions  2611  and  2612  formed at the rear of the gear bracket  2600 . Thereafter, the guide bar  710  coupled with the gear bracket  2600  is fixed to the first plate  2000 . For example, the guide bar  710  coupled with the gear bracket  2600  is moved from the upper side to the lower side, and a lower end of the guide bar  710  is fitted into the guide bar mounting recess  2000   b  of the guide bar mounting protrusion  2000   a . Thereafter, an upper side of the guide bar  710  and the third plate  2005  are connected. For example, the fourth gear  2609  and the lifting gear  2006  are engaged to move the third plate  2005  from the upper side to the lower side. Then, the upper end of the guide bar  710  is inserted into and fixed to the guide bar mounting recess  2000   b  of the fourth plate  2005   a . Thereafter, fastening holes  2617  formed at positions corresponding to both sides of the gear bracket  2600  and both sides of the lifting cover  210  are fastened with screws, bolts, or other suitable fastening elements to fix the gear bracket  2600  and the lifting cover  210 . Accordingly, the guide bar  710  is fixed to the first plate  2000  and the third plate  2005 , and the gear bracket  2600  may come into contact with and supported by the guide bar  710  so as to be guided. 
     &lt;Reinforcing Structure of Lifting Gear&gt; 
     In some instances, as the lifting cover  210  moves up and down along the fixed cover  200 , a repetitive load may be applied to the lifting gear  2006  to cause the rod-shaped lifting gear  2006  to be bent to be deformed. Therefore, the lifting gear  2006  needs to be reinforced so as not to be bent or deformed even if it is repeatedly used for a long time. For example, where an elevating length (stroke distance) of the lifting cover  210  is longer, it is necessary to further reinforce the lifting gear  2006  so as not to be bent or deformed. 
       FIG. 21  is a front perspective view of the third plate.  FIG. 22  is a front view of a portion of the third plate. First, in order to reinforce the lifting gear  2006 , a reinforcing recess  2005   d  formed to be concave at the vertical extending portion  2005   c  provided with the lifting gear  2006  or a reinforcing hole penetrating a vertical extending portion  2005   c  may be provided. 
     For example, the reinforcing recess  2005   d  may be concave from the front to the rear in the vertical extending portion  2005   c . In some implementations, the reinforcing recess  2005   d  may be provided in plurality and the plurality of reinforcing recesses  2005   d  may be spaced apart from each other in the up-down direction and may be arranged in a line. Further, the reinforcing recess  2005   d  may be provided in a circular shape when viewed from the front. In some implementations, the reinforcing recess  2005   d  may be arranged at the same interval as the interval between gear teeth of the lifting gear  2006 . In some implementations, the center of the reinforcing recess  2005   d  may be disposed to be aligned with the highest portion of the gear teeth configuring the lifting gear  2006 , i.e., the center of the thread ridge  2006   a , in a horizontal direction. That is, the center of the reinforcing recess  2005   d  and the center of the thread ridge  2006   a  of the gear teeth configuring the lifting gear  2006  may be formed at the same height. 
     In some implementations, the vertical extending portion  2005   c  may form a plate-shaped reinforcing plate  2006   b  on one side of the lifting gear  2006 . The reinforcing plate  2006   b  may be provided at a portion facing the fourth gear  2609 . For example, the fourth gear  2609  may be located on the front side of the lifting gear  2006  and may be engaged with gear teeth configuring the lifting gear  2006 , and the reinforcing plate  2006   b  may be positioned on the rear side of the lifting gear  2006 . 
     On one side of the vertical extending portion  2005   c , a gear teeth that configures the lifting gear  2006  is provided to be concave backward by a predetermined height on the front side to provide the lifting gear  2006 , and a rear surface without the gear teeth may be provided as a reinforcing plate  2006   b.    
     Where the reinforcing plate  2006   b  is configured as described above, the vertical extending portion  2005   c  provided with the lifting gear  2006  is reinforced to minimize damage to the gear teeth and deflection of the vertical extending portion  2005   c.    
     Further, the third plate  2005  may have a screw fastening hole  2005   e  in the up-down direction. In some implementations, a screw fastening hole (not shown) may be formed in the third plate  2005  in the vertical direction and communicate with the screw fastening hole. Then, where the third plate  2005  is coupled, a screw may be fastened through the screw fastening hole  2005   e  exposed to the upper side of the third plate  2005  to fix the first plate  2000  to the third plate  2005 . 
       FIG. 23  shows an example result of experimenting a degree of deflection deformation of the lifting gear before machining a reinforcing recess.  FIG. 24  shows an example result of experimenting a degree of deflection deformation of the lifting gear after machining the reinforcing recess. 
     In comparing between the results of  FIGS. 23 and 24 , it can be seen that the degree of deflection deformation of the vertical extending portion  2005   c  provided with the lifting gear  2006  is significantly low after the reinforcing recess  2005   d  is machined, as compared with the degree of deflection deformation of the vertical extending portion  2005   c  provided with the lifting gear  2006  before the reinforcing recess  2005   d  is machined. 
     That is, in the present disclosure, the vertical extending portion may be reinforced by machining the reinforcing recess  2005   d  in the vertical extending portion  2005   c  provided with the lifting gear  2006 , thereby minimizing deflection deformation of the vertical extending portion  2005   c.    
     Meanwhile, the lifting motors and gears, which are the main parts for the automatic elevating of the water ejection nozzle and the lifting cover, cause operational noise. Noise of the lifting motor decreases as the RPM decreases, while noise of the gears are caused by various factors such as a friction area, a rotation speed, and a gear shape. 
     According to the present disclosure, noise occurrence may be reduced by forming the gears in contact with each other with different materials and by forming the first gear with a material having good tensile elongation. 
     &lt;Lighting Output Structure&gt; 
     In some instances, where the water ejection lifting covers  200  and  210  and the water ejection nozzle  240  are configured to move up and down and rotate as described above, the user may act unconsciously during movement of the water ejection lifting covers  200  and  210  and the water ejection nozzle  240 , thereby causing an interference between the water ejection lifting covers  200  and  210  and the water ejection nozzle  240 . This may result in an injury to the user or an accident in which parts of the water ejecting apparatus parts damaged. Therefore, where the water ejection lifting covers  200  and  210  and the water ejection nozzle  240  are configured to move up and down and rotate, it may be necessary to display movement of the water ejection lifting covers  200  and  210  and the water ejection nozzle  240  so that the user may visually reliably recognize the movement of the water ejection lifting covers  200  and  210  and the water ejection nozzle  240 . 
     As described below, a light source  212  may be set to be turned on immediately when the user presses a water ejection button. In some implementations, the light source  212  may be set to be turned on immediately when the lifting cover  210  starts a descending operation from the initial position. In some implementations, the light source  212  may be set to be turned off when the lifting cover  210  ascends to reach the initial position, while maintained in an ON state. 
       FIG. 25  is a front perspective view of the water ejecting apparatus with the lighting output.  FIG. 26  is a longitudinal cross-sectional view of a water ejection unit having a lighting output function.  FIG. 27  is a bottom view of a light source PCB.  FIG. 28  is a perspective view of a lifting cover equipped with a diffusion member. Referring to  FIGS. 25  to  28 , the water ejection unit  20  includes a light source  212  provided inside the lifting cover  210  and provided above the water ejection nozzle  240  to output light downward and a protective plate  214  provided below the light source  212  and protecting the light source  212  from water flowing to the water ejection nozzle  240 . 
     In some implementations, the light source  212  may output light of one color. In some implementations, the light source  212  may be provided in plurality. In some implementations, the light source  212  may output at least two colors of light. In some implementations, the light source  212  may be provided as an LED. For example, the light source  212  may include a first LED  212   a  outputting blue and a second LED  212   b  outputting white. 
     When a plurality of light sources  212  are provided as described above, different colors of light may be output to inform the user according to situations. For example, when water is ejected to the water ejection nozzle  240 , the first LED  212   a  may be turned on and blue light may be output to the vicinity of the water ejection nozzle  240 . Therefore, the user may see blue light from the outside of the water ejecting apparatus and recognize that water is ejected from the water ejection nozzle  240 . 
     As a modification, the first LEDs  212   a  may be provided in plurality and the plurality of LEDs  212   a  may output blue and red. Also, the first LED  212   a  may output different colors according to types of ejected water. 
     In some implementations, the second LED  212   b  may be turned on when the water ejection lifting covers  200  and  210  are rotated or when the lifting cover  210  performs an elevating operation in order to output white light to the vicinity of the water ejection nozzle  240 . Accordingly, the user may see the white light from the outside of the water ejecting apparatus and recognize that the water ejection lifting covers  200  and  210  are moving. 
     In some implementations, the light source  212  may be used as mood lighting. In some implementations, the lifting cover  210  may be provided with a diffusion member  213  formed of a light-transmissive material at a lower end thereof, and light output from the light source  212  is exposed to the vicinity of the water ejection nozzle  240  through the diffusion member  213 . At least a portion of the diffusion member  213  may be accommodated inside the lifting cover  210 , and the other portion may be exposed to the outside of the lifting cover  210 . The diffusion member  213  may be provided near the water ejection nozzle  240 . In some implementations, at least a portion of the diffusion member  213  may be exposed to a bottom surface of the lifting cover  210 . In addition or alternatively, at least a portion of the diffusion member  213  may be exposed to a side surface of the lifting cover  210 . In some implementations, the diffusion member  213  may be made of a material obtained by mixing transparent plastic and a diffusion pigment. 
     In this case, the diffusion member  213  may simply allow light output from the light source  212  to pass therethrough and diffuse the light so that diffused light may pass therethrough. That is, the diffusion member  213  may function as a diffuser for LED lighting. 
     At least a portion of the lower end of the lifting cover  210  may form a clearance with the water ejection nozzle  240 , and the diffusion member  213  may be fitted into the clearance. 
     The diffusion member  213  may include a diffusion plate  2132  having a convex shape forward (left side in  FIG. 26 ) so as to be in contact with an inner surface of the lifting cover  210  and a diffusion projection  2131  extending outward along a circumference of a lower end of the diffusion plate  2132 . 
     The circumference of the lower end of the diffusion plate  2132  can have a convex shape in the front (refer to the left side of  FIG. 26 ) to contact the inner surface of the lifting cover  210 . It may include a diffusion protrusion  2131  extending outward. For example, the diffusion projection  2131  may be exposed to the outside of the lifting cover  210 . Therefore, light output from the light source  212  mounted on the bottom surface of the light source PCB  215  disposed inside the lifting cover  210  may be exposed to the outside of the lifting cover  210  through the diffusion plate  2132  and the diffusion projection  2131 . 
     In some implementations, a step portion  2133  formed to be concave as a curved surface at an inner corner portion and extending along an inner circumference of the diffusion plate  2132  may be provided at an upper end of the diffusion plate  2132 . For example, at least a portion of the light source  212  may be disposed to overlap the step portion  2133 . Specifically, at least a portion of the light source  212  may be arranged to overlap the step portion  2133  in the up-down direction and may be arranged to overlap the step portion  2133  in the left-right direction. Accordingly, light output from the light source  212  may be more reliably transferred to the diffusion plate  2132  and the diffusion projection  2131  through the step portion  2133 . 
     In some implementations, the light source PCB  215  may be disposed inside the lifting cover  210 . In some implementations, the light source  212  may be mounted on a bottom surface of the light source PCB  215 . An upper frame  216  on which the light source PCB  215  is seated may be provided at an upper portion of the water ejection nozzle  240 . 
     In some implementations, light output from the light source  212  may be output through the diffusion member  213  to the lower end of the lifting cover  210 . For example, the light source  212  may be set to be turned on only when water is ejected through the water ejection nozzle  240 . As another example, the light source  212  may be set to be turned on only when the water ejection lifting covers  200  and  210  and the water ejection nozzle  240  rotate or move. Accordingly, when water ejection is performed or when the water ejection lifting covers  200  and  210  and the water ejection nozzle  240  move, the user may easily recognize the corresponding state. 
     The purpose of providing the light source  212  is to inform the user of the water ejection state or whether the water ejection unit performs an elevating operation or a rotational operation. Accordingly, light output from the light source  212  must have a degree of brightness allowing the user to recognize the light when the light is exposed to the outside of the lifting cover  210  through the diffusion member  213  after being output from the light source  212 . 
     Referring to  FIG. 26 , a chamber  217  may be further provided above the water ejection nozzle  240  and provided below the protective plate  214  to transfer water introduced through the water ejection pipe  400  to the water ejection nozzle  240 . Accordingly, cold water, purified water, and hot water introduced through the water ejection pipe  400  may pass through the chamber  217  and may then be released to the outside of the water ejection nozzle  240 . 
     In some implementations, the water ejection nozzle  240  may include an inner member  242  having a hollow  241  provided inside thereof to allow water to be discharged therethrough and an outer member  243  connected to an outer lower end of the inner member  242  and exposed to the outside of the lifting cover  210 . 
     For example, a chamber  217  communicating with the hollow  241  may be provided above the inner member  242 . The chamber  217  has a larger diameter than the hollow  241 . 
     In some implementations, a plurality of ribs  244  protruding toward the center may be provided along a water ejection direction on an inner surface of the hollow  241 . The ribs  244  maintains a shape of a stream of water and improves vortices. 
     In some implementations, the outer member  243  may be made of a stainless material. When the outer member  243  that is exposed to the outside of the lifting cover  210  is made of a stainless material, the outer member  243  does not rust so as to be hygiene and damage and deformation that occurs when frequently used may be prevented. 
     In some implementations, the inner member  242  and the outer member  243  may be integrally injection-molded. For example, the outer member  243  may be formed of a metal material, and the inner member  242  and the outer member  243  may be integrally formed by an insert injection molding method. Therefore, a coupling force between the inner member  242  and the outer member  243  is increased to prevent leakage. In addition, the inner member  242  and the outer member  243  may be easily manufactured as compared with an existing assembling method. 
     &lt;Touch Bar Structure&gt; 
       FIG. 29  is a partially cut perspective view of a lifting cover.  FIG. 30  is a perspective view of a detection sensor.  FIG. 31  is a perspective view of a touch bar.  FIG. 32  is a longitudinal cross-sectional view of the lifting cover when the touch bar is in a descended position.  FIG. 33  is a longitudinal cross-sectional view of the lifting cover when the touch bar is in an ascended position.  FIG. 34  is a bottom view of the lifting cover. 
     In the water ejecting apparatus according to the present disclosure, the lifting cover  210  has a function of being automatically elevated. For example, when the user places a water receiving container under the water ejection nozzle  240  and presses the water ejection button, the lifting cover  210  descends and detects a height of the water receiving container, before water ejection is performed. Then, water is ejected in a state where the lifting cover  210  descends adjacent to the height of the water receiving container. 
     In some implementations, the lifting cover  210  includes a detection unit  600 . For example, the detection unit  600  may detect the water receiving container in a contact manner. As another example, the detection unit  600  may detect the height of the water receiving container in a non-contact manner. 
     Hereinafter, an embodiment in which the detection unit  600  detects the height of the water receiving container in a contact manner will be described. 
     The detection unit  600  may include a touch bar  610  exposed to a lower surface of the lifting cover  210  and disposed on the virtual line L 1  connecting the center of the case  10  of the water ejection nozzle  240 . The touch bar  610  may be provided in the front-rear direction, with the water ejection unit  20  positioned at the center. 
     In some implementations, the touch bar  610  may be provided to be movable in the up-down direction. The touch bar  610  may be installed to appear or disappear downward from the lifting cover  210 , while elevating vertically inside the lifting cover  210 . For example, the touch bar  610  may be disposed on the virtual line L 1  connecting the center of the water ejection nozzle  240  and the center of the rotator  220  and may be exposed in a straight shape on the bottom surface of the lifting cover  210 . 
     In some implementations, the touch bar  610  may be provided in the entire section between the water ejection nozzle  240  and the lower front cover  1000 . 
     A slit hole  218  is provided to be open on a lower surface of the lifting cover  210  and at least a portion of the touch bar  610  may be exposed through the slit hole  218 . 
     In some implementations, a through hole  219  may be provided on the lower surface of the lifting cover  210  to allow the water ejection nozzle  240  to pass therethrough. For example, one side of the slit hole  218  may communicate with the through hole  219 . Further, the other side of the slit hole  218  may extend to the other end of the lower surface of the lifting cover  210 . The other end of the slit hole  218  has an open shape. 
     In some implementations, a length of the touch bar  610  exposed through the slit hole  218  may be greater than a length of the slit hole  218 . 
     As described above, as the touch bar  610  is elongated, the touch bar  610  may detect a height of any water receiving container placed between the water ejection nozzle  240  and the flat portion  1002  of the front cover  100 . 
     In some implementations, the lifting cover  210  may include a side wall  219   a  extending upward along the periphery of the through hole  219 . With the configuration of the side wall  219   a , the periphery of the water ejection nozzle  240  may be surrounded and the water ejection nozzle  240  may be fixed more reliably. 
     In some implementations, reinforcing protrusions  2121  and  2191  (see  FIG. 34 ) extending downward may be provided in the vicinity of the through holes  219  and the slit hole  218  on the bottom surface of the lifting cover  210 . 
     When the lifting cover  210  descends, the reinforcing protrusions  2181  and  2191  (see  FIG. 34 ) first comes into contact with the water receiving container  2  before the bottom surface of the lifting cover  210 . And, as a contact area between the water receiving container  2  and the lifting cover  210  is significantly reduced by the reinforcing protrusions  2181 ,  2191 , a risk of bacterial infection or the like decreases, and as a result, hygiene may be improved. 
     In some implementations, the touch bar  610  may be mounted to be rotatable or elevated on the lifting cover  210 . For example, the touch bar  610  may move up and down, while rotating with respect to the lifting cover  210 . 
     The touch bar  610  may include a rotating shaft  611  rotatably coupled to the lifting cover  210 . Further, a pair of rotating shaft coupling parts  2110  may be spaced apart from each other in the front-rear direction on the bottom surface of the lifting cover  210  and protruding upward so that the rotating shaft  611  may be rotatably fitted thereto. The rotating shaft coupling part  2110  may have a rotating shaft coupling hole  2111  into which the rotating shaft  611  is inserted. Therefore, the rotating shaft  611  may be inserted into the rotating shaft coupling hole  2111  and rotated. 
     In some implementations, the rotating shaft  611  may be formed in parallel to the touch bar  610 . The touch bar  610  may be connected to the rotating shaft  611  by connection portions  612  and  613 . The connection portions  612  and  613  may include a vertical connection portion  612  extending upward from an upper side of the touch bar  610  and a horizontal connection portion  613  extending in a horizontal direction to connect the upper side of the vertical connection portion  612  to the rotating shaft  611 . 
     The horizontal connection portion  613  may have a plurality of slits  615  concavely cut in a direction perpendicular to the rotating shaft  611  so that the rotating shaft  611  may be more easily inserted into the rotating shaft coupling hole  2111 . With the configuration of the slit  615 , an interval between both ends of the rotating shaft  611  is narrowed and then expanded so as to be more easily inserted into the rotating shaft coupling hole  2111 . 
     In some implementations, the touch bar  610  may have a flat end portion facing the flat portion  1002 . In some implementations, the touch bar  610  may include a step portion  6101  disposed at an end facing the water ejection nozzle  240 . The step portion  6101  is provided in the form of a staircase. With the configuration of the step portion  6101 , an area in which the end of the touch bar  610  and the water ejection nozzle  240  are located and face each other may be minimized, and when the touch bar  610  performs a rotation and elevating operation, a situation where the end of the touch bar  610  is in contact with the water ejection nozzle  240  so as to be interfered may be prevented in advance. Further, the length of the touch bar  610  exposed to the outside may elongate as much as possible to detect the height of any water receiving container disposed between the water ejection nozzle  240  and the flat portion  1002 . 
     Referring to  FIG. 32 , the touch bar  610  can descend by self-weight. In this state, the horizontal connection portion  613  and the vertical connection portion  612  form an ‘L’ shape. 
     When the lifting cover  210  descends and the touch bar  610  comes into contact with the upper end of the water receiving container  2 , the touch bar  610  ascends. For example, as shown in  FIG. 33 , the touch bar  610  rotates about the rotating shaft  611  and ascends by a predetermined height. 
     In some implementations, the touch bar  610  needs to be reduced in weight so as to react more sensitively when coming into contact with the upper end of the water receiving container  2 . Accordingly, at least one lightweight hole  616  for weight reduction may be provided at the horizontal connection portion  613  of the touch bar  610 . 
     As described above, when the touch bar  610  comes into contact with the upper end of the water receiving container  2  and ascends, it is necessary to detect the rise of the touch bar and to stop a descending operation of the lifting cover  210 . 
     In some implementations, a detection sensor  620  that includes a transmitting portion  621  and a receiving portion  622  may be mounted above the touch bar  610 . The detection sensor  620  may provide a space  623  between the transmitting portion  621  and the receiving portion  622 . In some implementations, the transmitting portion  621  and the receiving portion  622  are arranged to face each other in order to exchange signals. For example, the transmitting portion  621  and the receiving portion  622  may exchange optical signals. As another example, the transmitting portion  621  and the receiving portion  622  may exchange infrared (IR) signals. As another example, the detection sensor  620  may be provided as a photo interrupt sensor. Here, the detection sensor  620  may detect the touch bar  610  in a contact manner or a non-contact manner. 
     In some implementations, at least a portion of the detection sensor  620  may be made of a material allowing infrared rays to be transmitted therethrough. For example, a cover of the detection sensor  620  may be made of a PC material having high permeability. Further, a blocking portion  614  disposed between the transmitting portion  621  and the receiving portion  622  may be made of an opaque ABS material having low light transmittance. 
     In some implementations, the touch bar  610  may be provided with the blocking portion  614  which ascends when the touch bar  610  ascends and is accommodated in the space  623  provided between the transmitting portion  621  and the receiving portion  622  to prevent a signal from the transmitting portion  621  from being received by the receiving portion  622 . 
     When the touch bar  610  descends, the blocking portion  614  may descend to escape from the space  623  formed between the transmitting portion  621  and the receiving portion  622 . Here, the signal of the transmitting portion  621  may be received by the receiving portion  622 . 
     In some implementations, the connection portions  612  and  613  of the touch bar  610  may have a shelter portion  617  formed to be concave to accommodate either the transmitting portion  621  or the receiving portion  622 . The shelter portion  617  may be configured to be concave in a direction of the rotating shaft  611 . The shelter portion  617  may be shaped to be concave downward. 
     When a signal transmitted from the transmitting portion  621  is received by the receiving portion  622 , the controller  90  may determine that the touch bar  610  does not ascend, and as a result, the controller  90  may determine that the touch bar  610  is not in contact with the upper end of the water receiving container. That is, when the lifting cover  210  descends, the controller  90  may determine that the lifting cover  210  has not yet approached the water receiving container and maintain descending operation of the lifting cover  210 . 
     If the signal transmitted from the transmitting portion  621  is not received by the receiving portion  622 , the controller  90  may determine that the touch bar  610  ascends and the blocking portion  614  ascends to be accommodated in the space  623  provided between the transmitting portion  621  and the receiving portion  622 . That is, the controller  90  may determine that the touch bar  610  is in contact with the upper end of the water receiving container  2 . Furthermore, the controller  90  may determine that, when the lifting cover  210  descends, the lifting cover  210  approaches to be in contact with the water receiving container, and stop the descending operation of the lifting cover  210 . 
     For example, a force can be generated and applied to the water receiving container as the lifting cover  210  is in contact with the water receiving container. Therefore, in order to prevent damage and deformation of the lifting cover  210  and the water receiving container and to protect the water ejection nozzle  240 , the lifting cover  210  ascends by a predetermined height before water ejection. Thereafter, water is ejected. 
     As described above, when the lifting cover  210  ascends, the touch bar  610  is spaced apart from the upper end of the water receiving container and may descend to the original position (state of  FIG. 32 ) by the touch bar  610 . 
     For example, the touch bar  610  may be provided with a force pushed downward by the elastic member  630  provided above the touch bar  610 . The lower end of the elastic member  630  is in contact with and supported by the upper end of the touch bar  610 . For example, the elastic member  630  is provided as a coil spring, a lower end thereof is inserted into the insertion protrusion  613   a  provided above the horizontal connection portion  613  so as to be supported in contact therewith. 
     In some implementations, an upper side of the elastic member  630  may be supported in contact with one side of the upper frame  216 . For example, the upper frame  216  may include a bottom surface and an insertion protrusion inserted into an upper side of the elastic member  630  may extend downward. 
     With the configuration of the elastic member  630 , the touch bar  610  may be provided with a force pushed downward, and when the touch bar  610  is not in contact with the water receiving container, the touch bar  610  may be maintained in a state of being exposed to a lower side of the lifting cover  210 . 
     Also, when the touch bar  610  comes into contact with the water receiving container, the elastic member  630  is compressed and the touch bar  610  ascends. Then, when the touch bar  610  is separated from the water receiving container, the elastic member  630  is restored by its own elasticity, and accordingly the touch bar  610  descends and returns to the original position. 
     As described above, in a state where the water ejection unit  20  is positioned at the center (the state of  FIG. 1 ), the touch bar  610  extends in the front-rear direction, and when the rotating shaft  611  of the touch bar  610  is formed in parallel with the touch bar  610 , water receiving containers  2   a  and  2   b  having various sizes may be detected. 
     According to the present disclosure, a reaction speed of the detection sensor  620  may be adjusted by adjusting tension of the elastic member  630  or by adjusting a space between the detection sensor  620  and the touch bar  610 . 
     For example, when the tension of the elastic member  630  is decreased, the touch bar  610  may react sensitively when coming into contact with the water receiving container, and as a result, the reaction speed of the detection sensor  620  may be increased. When the tension of the elastic member  630  is increased, the touch bar  610  reacts insensitively when coming into contact with the water receiving container, and as a result, the reaction speed of the detection sensor  620  may be decreased. 
     As another example, if the space between the detection sensor  620  and the touch bar  610  is reduced, even when the touch bar  610  slightly ascends when coming into contact with the water receiving container, the detection sensor  620  may detect the touch bar  610 , and as a result, the reaction speed of the detection sensor  620  may be increased. If the space between the detection sensor  620  and the touch bar  610  is increased, the detection sensor  620  cannot detect the touch bar  610  until it ascends by a predetermined distance or when in contact with the water receiving container. As a result, the reaction speed of the detection sensor  620  may be decreased. 
     In some implementations, the water receiving containers  2   a  and  2   b  may be detected with the same sensitivity in all the sections, regardless of size of the water receiving containers  2   a  and  2   b.    
     In some implementations, the touch bar  610  may have a cross-section convex downward so as to be in line contact with the upper end of the water receiving container disposed below the water ejection nozzle  240 . 
     As described above, when the touch bar  610  and the water receiving container are in line contact with each other, the water receiving container may be more sensitively detected. 
     In some implementations, the touch bar  610  is rotated when in contact with the upper end of the water receiving container disposed below the water ejection nozzle  240 . In addition, during the rotation operation of the touch bar  610 , a curved portion may be provided at a lower end of the touch bar  610 , so that a state where the lower end of the touch bar  610  is in contact with the upper end of the water receiving container  2  is maintained smoothly. 
     In some implementations, when the touch bar  610  rotates, the touch bar  610  may maintain a line-contact state with the water receiving container. 
     In some implementations, a gap G 2  between the other end (right side in  FIG. 32 ) of the slit hole  218  and the touch bar  610  may be greater than a gap G 1  between one end (left side in  FIG. 32 ) of the slit hole  218  and the touch bar  610 . 
     In some implementations, the rotating shaft  611  is provided on one side of the slit hole  218 . When the lower end of the touch bar  610  is in contact with the upper end of the water receiving container, the touch bar  610  rotates about the rotating shaft  611 . 
     In some implementations, as shown in  FIG. 33 , the touch bar  610  is adjacent to the other end of the slit hole  218  (the right side in  FIG. 32 ). Therefore, the gap G 2  between the other end (right side in  FIG. 32 ) of the slit hole  218  and the touch bar  610  is greater than the gap G 1  between one end (left side in  FIG. 32 ) of the slit hole  128  and the touch bar  610  so that the other end (right side in  FIG. 32 ) of the slit hole  218  may not be in contact with the touch bar  610  when the touch bar  610  rotates. 
     In some implementations, the blocking portion  614  of the touch bar  610  may be maintained in a state of being accommodated in the space  623  provided between the transmitting portion  621  and the receiving portion  622 . That is, even when the touch bar  610  does not detect the water receiving container, that is, even in the descending state, the upper end of the blocking portion  614  may be accommodated in the space  623  formed between the transmitting portion  621  and the receiving portion  622 . 
     As such, when the blocking portion  614  is maintained at the state of being accommodated in the space  623  formed between the transmitting portion  621  and the receiving portion  622  even in the descending state, the detection sensor  620  may detect the touch bar although the touch bar  610  merely slightly ascends when in contact with the water receiving container, and thus, the controller may more quickly control the operation of the lifting motor. 
     Referring to  FIG. 34 , according to the present disclosure, the touch bar  610  may extend in the front-rear direction (up-down direction in  FIG. 34 ) to detect both the water receiving container  2   a  having a relatively small inlet size and the water receiving container  2   b  having a relatively large inlet size. 
     In some implementations, according to the present disclosure, the rotating shaft  611  of the touch bar  610  is provided in the front-rear direction (up-down direction in  FIG. 34 ) similar to the touch bar  610 , so that an ascended height when the water receiving container  2   a  having a relatively small inlet size is detected and an ascended height when the water receiving container  2   b  having a relatively large inlet size is detected are equal, and since the touch bar  610  ascends to the same height at any position, the water receiving containers  2   a  and  2   b  may be detected in every section, regardless of size of the water receiving containers  2   a  and  2   b.    
     According to the present disclosure, it is possible to detect the water receiving container in all areas, without an unavailable detection region of the water receiving container, and a minimum ascending height of the touch bar  610  required for detecting the water receiving container, i.e., the detection height, may be equal regardless of size or position of the water receiving container. 
     Referring to  FIG. 34 , the touch bar  610  of the present disclosure is configured to be longer than the slit hole  218  to detect a height of the water receiving container of any size placed between the water ejection nozzle  240  and the flat portion  1002  of the front cover  100 . 
       FIG. 35  is a graph showing an example result of measuring a force required to detect a container at each position in the structure according to the present disclosure. Referring to  FIG. 35 , in the present disclosure, it can be seen that a force to be applied to the touch bar  610  to detect a container at each position of the touch bar  610  is uniform at all sections. That is, in the case of the present disclosure, it was confirmed that a force of 0.06 to 0.08 kgf at the same or similar distance of 5 mm, 15 mm, 25 mm, and 35 mm from the water ejection nozzle was required to detect a container. 
     Water may be ejected at a position adjacent to the water receiving container by the elevating of the water ejection nozzle. Accordingly, ejected water may be prevented from being scattered. In particular, since water scattering is prevented during ejection of water at a very high temperature, user safety may be ensured. 
     &lt;Motor Signal Detection&gt; 
       FIG. 36  is a block diagram showing example main components for the elevating operation of the water ejection nozzle.  FIG. 37  is a control flowchart of an example descending operation of the water ejection nozzle.  FIG. 38  is a control flowchart of an example ascending operation of the water ejection nozzle. 
     The water ejecting apparatus according to the present disclosure has a function of automatically elevating the lifting cover  210 . For example, when the user places a water receiving container under the water ejection nozzle  240  and presses the water ejection button, the lifting cover  210  descends and detects a height of the water receiving container before water is ejected. Then, water ejection is performed in a state where the lifting cover  210  descends adjacent to the height of the water receiving container. 
     In some implementations, the lifting cover  210  includes the detection unit  600 . The detection unit  600  may include a signal detection unit  650  that receives a “frequency generation” signal (hereinafter, an FG signal) generated by the lifting motor  250 . 
     Referring to  FIG. 37 , when the user requests water ejection, the lifting motor  250  operates and the fixed cover  210  and the water ejection nozzle  240  descend. As described above, when the lifting motor  250  operates, an FG signal is generated by the lifting motor  250  and the signal detecting unit  650  receives the FG signal. The signal detected by the signal detection unit  650  is input to the controller  90 , and the controller  90  recognizes the amount of rotation, rotation speed, and other suitable parameters of the lifting motor  250  through the FG signal of the lifting motor  250  and predicts a descending distance of the lifting cover  210  and the water ejection nozzle  240 . Also, the controller  90  may measure a driving time of the lifting motor  250  to predict the descending distance of the lifting cover  210  and the water ejection nozzle  240 . 
     In some implementations, the controller  90  may determine whether a sudden change in a load applied to the lifting motor  250  through the FG signal from the lifting motor  250 . In general, when the elevating operation of the lifting cover  210  is forcibly stopped during the operation of the lifting motor  250 , a large load equal to or greater than a predetermined reference value is applied to the lifting motor  250 . For example, if the lower end of the lifting cover  210  or the water ejection nozzle  240  comes into contact with an obstacle such as a water receiving container or the like while the lifting cover  210  descends, a large load is applied to the lifting motor  250 . 
     As another example, as the lifting cover  210  descends, the lifting cover  210  reaches a bottom dead point (lowest descending height) and comes into contact with the lower stopper, and here, as a restraint is physically applied to the descending operation of the lifting cover  210 , a large load is applied to the lifting motor  250 . 
     As another example, as the lifting cover  210  ascends, the lifting cover  210  reaches a top dead point (highest elevation height) and comes into contact with the upper stopper, and here, as a restraint is physically applied to the ascending operation of the lifting cover  210 , a large load is applied to the lifting motor  250 . 
     The controller  90  may determine whether a large load equal to or greater than the preset reference value is applied to the lifting motor  250  through an FG signal from the lifting motor  250 . Further, when it is determined that a large load equal to or greater than the preset reference value is applied to the lifting motor  250 , the controller  90  recognizes a cause thereof. 
     When the lifting cover  210  moves from the top dead point to the bottom dead point, the controller  90  may store a rotation direction or rotation amount information (hereinafter, stored information) of the lifting motor  250 . 
     Also, when a load equal to or greater than the predetermined reference value is applied to the lifting motor  250  during the descending operation of the lifting cover  210 , the controller  90  recognizes the rotation direction or rotation amount information (hereinafter, received information) of the lifting motor  250  in real time through the FG signal from the lifting motor  250 . 
     Thereafter, the controller  90  compares the received information recognized in real time with the stored information. As a result of the comparison, if the received information is the same as the stored information, the controller  90  may determine that the lifting cover  210  reaches the bottom dead point, and stop driving of the lifting motor  250 . That is, if the motor rotation amount of the storage information is the same as the motor rotation amount of the received information, the controller  90  may determine that the lifting cover  210  has reached the bottom dead point, and stop driving of the lifting motor  250 . Then, the controller  90  may perform water ejection. 
     If the stored information and the received information are not the same as a result of comparison, the controller  90  may determine that the lifting cover  210  is in contact with an obstacle such as a water receiving container before reaching the bottom dead point, and may stop driving of the lifting motor  250 . That is, when the motor rotation amount of the received information is lower than the motor rotation amount of the stored information, the controller  90  may determine that the lifting cover  210  is in contact with an obstacle such as the water receiving container before reaching the bottom dead point, and stop driving of the lifting motor  250 . 
     When the driving of the lifting motor  250  is stopped as described above, the controller  90  may inform the user of the obstacle detection situation. 
     In some implementations, when the driving of the lifting motor  250  is stopped, the controller  90  may perform water ejection. In some implementations, when the driving of the lifting motor  250  is stopped, the controller  90  controls the lifting motor  250  such that the lifting cover  210  ascends by a predetermined height, and when the lifting cover  210  is completed, the controller  90  may perform water ejection. In some implementations, when water ejection terminates, the lifting cover  210  ascends. 
     When the lifting cover  210  moves from the bottom dead point to the top dead point, the controller  90  may store rotation direction or rotation amount information (hereinafter, second storage information) of the lifting motor  250 . 
     If a load equal to or greater than a predetermined reference value is applied to the lifting motor  250  during the ascending operation of the lifting cover  210 , the controller  90  recognizes rotation direction or rotation amount information (hereinafter, second received information) of the lifting motor  250  in real time through the FG signal from the lifting motor  250 . Then, the controller  90  compares second received information recognized in real time with the second storage information. When the second received information is the same as the second storage information as a result of comparison, the controller  90  may determine that the lifting cover  210  has reached the top dead point, and stop driving of the lifting motor  250 . That is, when the motor rotation amount of the second storage information is equal to the motor rotation amount of the second received information, the controller  90  may determine that the lifting cover  210  has reached the top dead point, and stop driving of the lifting motor  250 . 
     In some implementations, when the lifting cover  210  and the water ejection nozzle  240  descend, the controller  90  may predict a distance by which the lifting cover  210  and the water ejection nozzle descend, and control the operation of the lifting motor  250  so that the lifting cover  210  and the water ejection nozzle  240  may ascend by the corresponding distance. 
     As another example, when the lifting cover  210  and the water ejection nozzle  240  ascend, the controller  90  may control the lifting motor  250  to operate by time corresponding to a driving time of the lifting motor  250  measured when the lifting cover  210  and the water ejection nozzle  240  descend. 
     If the second received information is not the same as the second storage information a result of comparison, the controller  90  may determine that the lifting cover  210  is in contact with an obstacle before reaching the top dead point, and stop driving of the lifting motor  250 . That is, when the motor rotation amount of the second received information is lower than the motor rotation amount of the second storage information, the controller  90  may determine that the lifting cover  210  is in contact with an obstacle before reaching the top dead point, and stop driving of the lifting motor  250 . 
     When the driving of the lifting motor  250  is stopped as described above, the controller  90  may inform the user of the obstacle detection situation. In some implementations, when the driving of the lifting motor  250  is stopped, the controller  90  may control the lifting motor  250  such that the lifting cover  210  descends by a predetermined height. 
     &lt;Motor Speed Control&gt; 
       FIG. 39  is a graph showing a change in speed of a motor when a water ejection nozzle descends.  FIG. 40  is a graph showing a change in speed of a motor when an obstacle is detected in a state where the water ejection nozzle descends. Referring to  FIG. 39 , during the elevating operation of the water ejection unit  20 , a rotation speed of the lifting motor  250  may be set to be different for each section. For reference, a rotation speed of the lifting motor  250  may be adjusted through duty control of the lifting motor  250 . 
     The lifting motor  250  may be set to gradually decrease in speed in some sections when the lifting cover  210  descends. For example, when the lifting cover  210  descends, the lifting motor  250  may be lowered in duty to reduce a rotation speed of the lifting motor  250 . In some examples, when the lifting cover  210  descends, the lifting motor  250  rotates at a first speed, and when the lifting cover  210  approaches the bottom dead point (maximum descending height), the lifting motor  250  may rotate at a second speed lower than the first speed. 
     In some implementations, when the lifting cover  210  is closer to the bottom dead point (maximum descending height), the lifting motor  250  may rotate at a third speed lower than the second speed. In some implementations, when the lifting cover  210  reaches the bottom dead point (maximum descending height), the lifting motor  250  may stop. For example, when the rotation speed of the lifting motor  250  decreases, a descending speed of the lifting cover  210  decreases. 
     As described above, when the lifting cover  210  descends, if the descending speed of the lifting cover  210  decreases toward the bottom dead point (maximum descending height), the lifting cover  210  may more easily stops at the bottom dead point (maximum descending height). In some implementations, an impact applied to the water receiving container and the detection unit may be reduced when a height of the water receiving container having a height similar to the bottom dead point (maximum drop height) is detected. 
     As another example, the lifting motor  250  may be set to be gradually lowered in speed in some sections where the lifting cover  210  ascends. For example, when the lifting cover  210  ascends, the lifting motor  250  rotates at a fourth speed, and when the lifting cover  210  approaches the top dead point (maximum ascending height), the lifting motor  250  may rotate at a fifth speed lower than the fourth speed. 
     In some implementations, when the lifting cover  210  is closer to the top dead point (maximum ascending height), the lifting motor  250  may rotate at a sixth speed lower than the fifth speed. In some implementations, when the lifting cover  210  reaches the top dead point (maximum ascending height), the lifting motor  250  may stop. For example, when the rotation speed of the lifting motor  250  decreases, the ascending speed of the lifting cover  210  decreases. 
     As described above, when the lifting cover  210  ascends, if the ascending speed of the lifting cover  210  decreases toward the top dead point (maximum ascending height), the lifting cover  210  may be more easily stopped at the top dead point (maximum ascending height). 
     In some implementations, the rotation speed of the lifting motor  250  and the ascending speed of the lifting cover  210  may be controlled to gradually decrease in several steps. 
     Referring to  FIG. 40 , the lifting motor  250  may rotate in a first direction CW, and when an obstacle such as a water receiving container is detected, the lifting motor  250  may rotate in a second direction CCW opposite to the first direction CW. The lifting motor  250  may then stop from rotating. 
     For example, the lifting motor  250  may recognize the water receiving container or the obstacle itself, without a separate sensor. In some examples, when the lifting cover  210  descends and comes into contact with an obstacle or a water receiving container in a state of descending according to an operation of the lifting motor  250 , a large load may be applied to the lifting motor  250 , and the controller  90  connected to the lifting motor  250  may recognize that the lifting cover  210  is in contact with an obstacle or the water receiving container based on a counter electromotive force generated here. 
     In some implementations, when it is determined that the lifting cover  210  is in contact with the water receiving container or an obstacle based on the counter electromotive force, the controller  90  changes a rotation direction of the lifting motor  250  to ascend the lifting cover  210  by a predetermined height. Then, when the lifting cover  210  ascends by a set height, the lifting motor  250  is stopped. 
     In some instances, various objects, such as spoons, ice, etc. can be used together with the container or included in the container. According to the present disclosure, it may be set such that an obstacle is recognized if the FG signal from the motor is not generated 10 times before reaching the bottom dead point in the special situation as described above. In addition, an avoidance algorithm of increasing a certain interval when an obstacle is determined is configured. 
     In some implementations, according to the present disclosure, the top dead point and the bottom dead point may be detected without the motor and/or without a sensor. For example, an algorithm for recognizing three types of information is implemented using a feedback signal from the motor. 
     In some implementations, the motor used in the driving module for elevating the water ejection nozzle is a BLDC motor. The BLDC motor requires a controller, and it is necessary to select a controller when developing the motor. In some implementations, the motor of the driving module applied to the present disclosure may be controlled using an IC called A4931. Features of the module are specialized in auto-elevation. 
     Some implementations of the present disclosure do not require a structure for detection of the top dead point and may implement the bottom dead point and obstacle detection function. 
     In some implementations of the present disclosure, the BLDC motor in use generates an FG signal. Then, in the normal mode, the controller  90  may determine whether the BLDC motor suddenly changes in load by using the FG signal generated when the BLDC motor rotates, and when the load suddenly changes, the normal mode may be switched to an emergency stop mode, and in the case of the sudden change in the load, the normal mode may be switched to an emergency stop mode, the BLDC motor is stopped in the emergency stop mode. According to the present disclosure, it is possible to detect the top dead point, the bottom dead point, an obstacle may be detected without a separate sensor by detecting only the FG signal. 
     For reference, when the BLDC motor operates, a moving length of the lifting cover may be calculated through the generated FG signal. Also, through a rotation amount or a rotation direction of the BLDC motor, a moving distance of the lifting cover may be determined by the FG signal and the positions of the top and bottom dead points may be detected. 
     An example detection method of the top dead point, bottom dead point, and obstacle is as follows. A normal state is determined through an initial module operation, and a driving distance to the top dead point and the bottom dead point is moved by measuring the FG signal. If a target FG value is not reached despite sufficient movement time, it is determined as interference of an obstacle. According to the present disclosure, a structure for detection is not required, obtaining an effect of simplifying the structure and reducing cost. 
     In some implementations, two positions may be additionally detected. In some implementations, it is possible to detect three situations (top dead point, bottom dead point, obstacle) without using a detection sensor. 
     Referring back to  FIG. 36 , the water ejecting apparatus  1  according to the present disclosure includes the controller  90  for controlling various components. The controller  90  may be installed in the case  10  as described above. In some implementations, the controller  90  may be provided separately from the water ejecting apparatus  1 . 
     The controller  90  may control the operation of the lifting motor  250 . Also, the lifting cover  210  and the water ejection nozzle  240  are elevated by the operation of the lifting motor  250 . That is, the controller  90  may control the elevation of the water ejection nozzle  240 . 
     In some implementations, the controller  90  is installed on the water ejection pipe  400  to control the operation of the water ejection valve  94  to control a flow of water. The water ejection valve  94  may be understood as a component that intermittently regulates a flow of water being ejected to the water ejection nozzle  240  and resultantly opens and closes the water ejection nozzle  240 . That is, the controller  90  may control the water ejection and stopping of water ejection. 
     The controller  90  may be connected to the input unit  270  or the detection unit  600  to receive a signal and control an operation of the lifting motor  250  and the water ejection valve  94 . The input unit  270  may include an elevation input unit  271  for inputting an elevation command of the lifting cover  210  and a water ejection input unit  272  for inputting an opening and closing command of the water ejection valve  94 . 
     For example, the detection unit  600  may be disposed below the lifting cover  210 . As another example, the detection unit  600  may be mounted on the front cover  100 . In particular, the detection unit  600  may be provided in plurality and the plurality of detection units  600  may be installed in a line and spaced apart from each other in the up-down direction on the flat portion  1002 . As another example, the detection unit  600  may be mounted on the water ejection nozzle  240  or may be mounted near the water ejection nozzle  240 . The detection unit  600  is mounted to detect a height of a cup or the like placed under the water ejection nozzle  240 . 
     &lt;Elevating Operation Control&gt; 
       FIG. 41  is a flowchart of an example control method of a water ejecting apparatus according to a first embodiment of the present disclosure. Referring to  FIG. 41  with reference to  FIG. 36 , the water ejecting apparatus  1  is provided in a water ejection standby state (S 100 ). Here, the water ejection standby state may be understood as a state where power is connected to the water ejecting apparatus  1 . In addition, the lifting cover  210  and the water ejection nozzle  240  are in an elevated state. 
     In the standby state, it is determined whether there is an input of the water ejection input unit  272  from the user (S 110 ). Then, when a water ejection command is detected, the lifting cover  210  and the water ejection nozzle  240  descend (S 120 ). For example, the controller  90  drives the lifting motor  250  according to a signal from the water ejection input unit  272 . Accordingly, the motor shaft  2500  is rotated, and power is transferred to the gear module  260 . In addition, the fourth gear  2609  may be rotated and lowered along the lifting gear  2006 . 
     Then, the detection unit  600  detects whether it is in contact with an upper end of the container (S 130 ). For example, the lifting cover  210  and the water ejection nozzle  240  continue to descend, and then, as at least a portion of the detection unit  600  comes into contact with the upper end of the container placed under the water ejection nozzle  240 , an upper end of the container is detected. As described above, when the detection unit  600  detects the upper end of the container, the controller  90  stops driving of the lifting motor  250 . That is, the lifting cover  210  and the water ejection nozzle  240  are lowered until the detection unit  600  detects the upper end of the container. 
     If the upper end of the container is not detected by the detection unit  600 , the lifting cover  210  and the water ejection nozzle  240  descend to the lowermost end. (S 140 ). For example, when the lifting cover  210  and the water ejection nozzle  240  continue to descend, the lifting cover  210  and the water ejection nozzle  240  reach the bottom dead point and a large load is temporarily applied to the lifting motor  250 . 
     Then, when such a load is input, the controller  90  determines that the lifting cover  210  and the water ejection nozzle  240  descend to the lowermost end, and stops driving of the lifting motor  250  so that the descending operation of the lifting cover  210  and the water ejection nozzle  240  is stopped (S 141 ). 
     For example, as described above, when the lifting cover  210  and the water ejection nozzle  240  reach the lowermost end or when the detection unit  600  is in contact with the upper end of the container and detects the container, water ejection is performed immediately (S 160 ). As another example, when the lifting cover  210  and the water ejection nozzle  240  descend, if the detection unit  600  comes into contact with the upper end of the container to detect the container, water ejection may not be performed immediately and the lifting cover  210  and the water ejection nozzle  240  may ascend by a set height (S 150 ). In some implementations, the lifting cover  210  and the water ejection nozzle  240  may ascend by about 15 mm. 
     Thereafter, water ejection is performed (S 160 ). For example, as the water ejection valve  94  is opened, water from the water ejection pipe  400  is discharged to the water ejection nozzle  240 . The dispensed water may be purified water, cold water or hot water depending on a user selection or settings. 
     Also, it is determined whether the amount of ejected water has reached a target flow rate (S 170 ). For example, a water ejection flow rate may be detected by a flow sensor. The flow sensor may be installed on a pipe connected to the rear end of the filter  40  based on a flow direction of water to detect a flow rate of water flowing after passing through the filter  40 . 
     When the water ejection flow rate reaches the target flow rate, water ejection terminates and the lifting cover  210  and the water ejection nozzle  240  ascend to the original position again and are then stopped (S 180 ). Here, the original position may refer to the positions of the lifting cover  210  and the water ejection nozzle  240  in a standby state (S 100 ). 
     The ascending of the lifting cover  210  and the water ejection nozzle  240  may be performed when a predetermined time has elapsed after water dispensing terminated. For example, when water ejection terminates, the controller  90  drives the lifting motor  250  reversely after a set time. Accordingly, the motor shaft  2500  is rotated in reverse and power is transferred to the gear module  260 . In addition, when the fourth gear  2609  is reversely rotated, it may be rotated and lifted along the lifting gear  2006 . 
     Continuing to ascend, the lifting cover  210  and the water ejection nozzle  240  reach the top dead point, and accordingly, the lifting motor  250  is temporarily subjected to a large load. When such a load is input, the controller  90  determines that the ascending is completed and stops driving of the lifting motor  250 . 
     Alternatively, when water ejection is finished, the lifting cover  210  and the water ejection nozzle  240  may not immediately ascend but maintain the lowered state until there is a separate instruction, or maintain the lowered state for a predetermined time and return to the initial position (standby position). 
     By the lifting of the lifting cover  210  and the water ejection nozzle  240 , water may be ejected from a position adjacent to the water receiving container. Accordingly, the ejected water may be prevented from being scattered. In particular, when water at a very high temperature is ejected, preventing of scattering of ejected water guarantees user stability. 
       FIG. 42  is a flowchart of an example control method of a water ejecting apparatus according to a second embodiment of the present disclosure, and  FIG. 43  is a reference view for explaining the control method of  FIG. 42 . Referring to  FIGS. 42 and 43 , the water ejecting apparatus  1  is provided in a water ejection standby state (S 200 ). For example, the water ejection standby state may be understood as a state where power is connected to the water ejecting apparatus  1 . In addition, the lifting cover  210  and the water ejection nozzle  240  are in an elevated state. Here, the lower end of the touch bar  610  is located at a height of ‘a’ in  FIG. 43 . 
     In the standby state as described above, it is determined whether the water ejection input unit  272  is input from the user (S 210 ). Also, when a water ejection command is detected, the lifting cover  210  and the water ejection nozzle  240  are lowered (S 220 ). For example, the controller  90  drives the lifting motor  250  according to a signal from the water ejection input unit  272 . Accordingly, the motor shaft  2500  is rotated and power is transferred to the gear module  260 . In addition, the fourth gear  2609  may be rotated and lowered along the lifting gear  2006 . For example, the signal detection unit  650  detects an FG signal from the lifting motor  250 . 
     In step S 220 , the light source  212  may be turned on. After step S 220 , the detection sensor  620  detects whether the touch bar  610  is in contact with the water receiving container (S 230 ). For example, while the lifting cover  210  and the water ejection nozzle  240  continue to descend, the touch bar  610  comes into contact with and detects the upper end of the water receiving container placed below the water ejection nozzle  240 . Here, the lower end of the touch bar  610  is located at a height of ‘b’ in  FIG. 43 . Then, the touch bar  610  rotates and the lower end of the touch bar  610  ascends by a predetermined height from the height of ‘b’ in  FIG. 43 . 
     That is, the lifting cover  210  and the water ejection nozzle  240  descend until the touch bar  610  and the detection sensor  620  detect the upper end of the container. If the upper end of the container is not detected by the detection unit  600 , the lifting cover  210  and the water ejection nozzle  240  descend to the lowermost end (S 240 ). For example, if the lifting cover  210  and the water ejection nozzle  240  continue to descend, the lifting cover  210  and the water ejection nozzle  240  reach the bottom dead point and the lifting motor  250  is temporarily subjected to a large load. Then, when such a load is input, the controller  90  may determine that the descending to the lowermost end is completed and stop the driving of the lifting motor  250 , so that the descending operation of the lifting cover  210  and the water ejection nozzle  240  may be stopped (S 241 ). 
     As another example, when the lifting cover  210  and the water ejection nozzle  240  continue to descend, the lifting cover  210  and the water ejection nozzle  240  may reach the bottom dead point and the controller may determine that the lifting cover  210  and the water ejection nozzle  240  have reached the bottom dead point through an FG signal detected by the signal detection unit  650 . Specifically, when moving from the standby position to the bottom dead point, the FG signal may be stored and the controller  90  may determine whether the lifting cover  210  and the water ejection nozzle  240  reach the bottom dead point by comparing the detected FG signal with the stored FG signal. 
     When it is determined that the lifting cover  210  and the water ejection nozzle  240  have reached the bottom dead point in this manner, the controller  90  may stop the driving of the lifting motor  250  to stop the descending operation of the lifting cover  210  and the water ejection nozzle  240  (S 241 ). 
     For example, when the lifting cover  210  and the water ejection nozzle  240  reach the lowermost end or when the touch bar  610  comes into contact with the upper end of the water receiving container to detect the water receiving container, water ejection may be performed immediately (S 260 ). 
     As another example, when the lifting cover  210  and the water ejection nozzle  240  descend, if the touch bar  610  comes into contact with the upper end of the water receiving container and the detection sensor  620  detects the water receiving container, water ejection may not be performed immediately and the lifting cover  210  and the water ejection nozzle  240  may be lifted by a set height (S 250 ). Here, the lower end of the touch bar  610  is located at a height of ‘c’ in  FIG. 43 . For example, the lifting cover  210  and the water ejection nozzle  240  may ascend by about 15 mm. 
     Thereafter, water ejection is performed (S 260 ). Specifically, as the water ejection valve  94  is opened, water from the water ejection pipe  400  is discharged to the water ejection nozzle  240 . The dispensed water may be purified water, cold water or hot water depending on a user selection or settings. 
     Also, it is determined whether the amount of ejected water has reached a target flow rate (S 270 ). For example, a water ejection flow rate may be detected by a flow sensor. The flow sensor may be installed on a pipe connected to the rear end of the filter  40  based on a flow direction of water to detect a flow rate of water flowing after passing through the filter  40 . When the water ejection flow rate reaches the target flow rate, water ejection terminates (S 280 ). 
     Also, the controller operates the lifting motor  250  to lift the lifting cover  210  and the water ejection nozzle  240  ascend to the original position (S 291 ). Here, the original position may refer to the positions of the lifting cover  210  and the water ejection nozzle  240  in the standby state (S 100 ). 
     In some implementations, the ascending of the lifting cover  210  and the water ejection nozzle  240  may be performed when a predetermined time has elapsed after water dispensing terminated. For example, when water ejection terminates, the lifting cover  210  and the water ejection nozzle  240  may ascend after waiting for 6 seconds. When the water ejection terminates, the controller  90  drives the lifting motor  250  reversely after a set time. Accordingly, the motor shaft  2500  is rotated reversely and power is transferred to the gear module  260 . In addition, when the fourth gear  2609  is reversely rotated, the fourth gear  2609  may be rotated and lifted along the lifting gear  2006 . 
     Also, when the lifting cover  210  and the water ejection nozzle  240  reach the top dead point, the operation of the lifting motor  250  is stopped and the elevating operation of the lifting cover  210  and the water ejection nozzle  240  is stopped. For example, while the lifting cover  210  is ascending, the lifting cover  210  and the water ejection nozzle  240  reach the top dead point, and accordingly, the lifting motor  250  is temporarily subjected to a large load. When such a load is input, the controller  90  may determine that the ascending is completed, and stop the driving of the lifting motor  250 . 
     As another example, when the lifting cover  210  and the water ejection nozzle  240  continue to ascend, the lifting cover  210  and the water ejection nozzle  240  may reach the top dead point and the controller may determine that the lifting cover  210  and the water ejection nozzle  240  have reached through an FG signal detected by the signal detection unit  650 . 
     For example, the controller  90  may store the FG signal when movement from the bottom dead point to the top dead point and the FG signal when movement from the position where water ejection is performed to the top dead point in step S 260 , and compare the FG signal detected by the signal detection unit  650  and the stored FG signal to determine whether the lifting cover  210  and the water ejection nozzle  240  have reached the top dead point (S 292 ). 
     Also, when it is determined that the lifting cover  210  and the water ejection nozzle  240  have reached the top dead point through the FG signal, the controller stops driving of the lifting motor  250  (S 293 ). Here, the lower end of the touch bar  610  is located at a height of ‘d’ in  FIG. 43 . Also, in step S 293 , the light source  212  may be turned off. 
     Alternatively, when water ejection terminates, the lifting cover  210  and the water ejection nozzle  240  may not immediately ascend but maintain the lowered state until a separate instruction is made, or maintain the lowered state for a predetermined time and return to the initial position (standby position). 
     As the lifting cover  210  and the water ejection nozzle  240  ascend, water may be ejected from a position adjacent to the water receiving container. Accordingly, ejected water may be prevented from being scattered. In particular, since water scattering is prevented during ejection of water at a very high temperature, user safety may be ensured. 
     As described above, some implementations of the present disclosure have a structure that rotates the water ejection unit  20  relative to the case  10 . In some implementations, the lifting cover  210  accommodated inside the fixed cover  200  configuring the water ejection unit  20  has a structure to move up and down. In some implementations, the lifting motor  250 , the gear module  260 , and the water ejection pipe  400  are accommodated and the detection unit  600  is mounted in the lifting cover  210 . The detection unit  600  may be disposed such that at least a portion thereof is exposed to the outside of the lifting cover  210 . 
     When the user presses the water ejection button, the water ejection nozzle descends but the water receiving container having a certain height (e.g., 120 mm) or greater is detected by the detection unit  600  so that the lifting cover  210  stops at the height of the water receiving container and water ejection may be performed immediately, or after the lifting cover  210  ascends by a certain height (e.g., 15 mm), water ejection is performed. 
     In some implementations, although a water receiving container having a height lower than the certain height (e.g., 120 mm) is detected, water is ejected when the lifting cover  210  reaches as much close to the bottom dead point as possible, thereby reducing water splash due to head drop. 
     In some implementations, in the lowered state, repeated water ejection may be performed after water ejection, and when water ejection terminates, the lifting cover  210  may automatically ascend to return to the initial position. 
       FIG. 44  illustrates that the lifting cover and the water ejection nozzle descend in a manual manner. Referring to  FIG. 44 , in the case of the manual method, the user may adjust the position of the water ejection nozzle by holding the lifting cover by hand and lowering it or raising it. However, due to this, the water ejection nozzle and its surroundings may come into contact with the user&#39;s hand, having a possibility that a microorganism is contacted and causing a problem of contamination as the microorganism grows. 
       FIG. 45  illustrates that the lifting cover and the water ejection nozzle are elevated in an automatic manner according to the present disclosure.  FIG. 45( a )  illustrates that the lifting cover and the water ejection nozzle ascend to the maximum so as to be located at the top dead point.  FIG. 45( b )  illustrates that lifting cover and the water ejection nozzle descend to the maximum so as to be located at the bottom dead point. 
     Referring to  FIG. 45 , in the case of the present disclosure, as the lifting cover  210  is accommodated inside the fixed cover  200 , an elevating distance of the water ejection nozzle  240  may be lengthened and the water ejection nozzle  240  may descend by a minimum height and may ascend by a maximum height. Therefore, water may be ejected to water receiving containers having various heights. Also, when water is ejected to a relatively low water receiving container, water splashes to the outside of the water receiving container may be reduced. Also, since there is no need for the user to touch the water ejection nozzle or the surroundings by hand, it is possible to significantly reduce the possibility of microbial growth in the water ejection nozzle and the surroundings. 
     In some implementations, the automatic elevating mode as described above may be turned on or off by a user selection. For example, the user may turn on the automatic elevating mode by pressing an automatic elevating button provided in the input unit  270 . Here, the lifting motor  250  may be switched to an active state. Also, when the user presses the water ejection button, the lifting cover  210  and the water ejection nozzle  240  automatically descend and are positioned near the water receiving container, and thereafter, water ejection may be performed. Also, when water ejection terminates, the lifting cover  210  and the water ejection nozzle  240  may return to the original position. 
     For example, the user may turn off the automatic elevating mode by pressing the automatic elevating button provided in the input unit  270 . Here, the lifting motor  250  may be switched to an inactive state. Also, when the user pulls the lifting cover  210  to place the water ejection nozzle  240  near the water receiving container and presses the water ejection button, water ejection may be performed. After water ejection terminates, the lifting cover  210  and the water ejection nozzle  240  are fixed to the position where the water ejection was performed. The user may push up the lifting cover  210  to return the lifting cover  210  and the water ejection nozzle  240  to the original position. 
     If the lifting motor  250  is activated and the user manually pulls the lifting cover  210 , the lifting motor  250  or the PCB may be damaged by a counter electromotive force. Therefore, a counter electromotive force blocking circuit may be implemented on the circuit controlling the lifting motor  250 . 
     As described above, when both automatic elevation and manual elevation are available, user&#39;s convenience is increased, and since the rotation operation and the elevating operation of the water ejection unit  20  are selectively performed, a size of a minimum space required for installation of the water ejecting apparatus may be reduced. That is, the water ejecting apparatus may be installed at various positions without space restrictions. 
     It will be apparent to those skilled in the art that various modifications and variations may be made in the present disclosure without departing from the spirit or scope of the disclosure. Thus, it is intended that the present disclosure covers modifications and variations that come within the scope of the appended claims and their equivalents.