Patent Description:
Traditional indoor unit of the air conditioner usually have a non-detachable housing which faces the air passage member. After the air conditioner has been used for a long time, dust is likely to accumulate in the wall of the air passage member and the cross-flow wind wheel, it is difficult to clean the air passage member without removing the face frame. Besides, when there is a problem with the motor of the air guiding structure, it is also not easy to replace and repair the motor. <CIT> is concerned with an air-conditioning indoor unit, the air-conditioning indoor unit comprises an air duct assembly, a face frame, a grille assembly, a first panel and a second panel, the air duct assembly is detachably connected with the chassis. <CIT> is concerned with an air conditioner indoor unit having a shell, a heat exchanger and a fan assembly, and the heat exchanger and the fan assembly are located in the shell. <CIT> is concerned with an air conditioner which allows a general user to easily mount and demount a wind direction changing plate for vertically changing the wind direction.

The main objective of the present disclosure is to provide an indoor unit of an air conditioner, aiming at improving the convenience of cleaning the indoor unit of the air conditioner.

According to one aspect, the present invention provides an indoor unit of an air conditioner as set out in claim <NUM>.

Optionally, the indoor unit of the air conditioner further includes a bottom plate disposed on the chassis.

Optionally, an outer periphery of the avoiding hole includes a first locking structure, an inner side wall of the cover plate includes a second locking structure, and the cover plate is detachably connected to the lower panel through the first locking structure and the second locking structure.

Optionally, the indoor unit of the air conditioner further includes a locking member, a periphery of the air outlet includes a connecting hole, the air passage member includes a mounting hole corresponding to the connecting hole, and the locking member is passed through the connecting hole and the mounting hole for connecting the lower panel with the air passage member.

Optionally, a side of the lower panel on the front-rear direction includes a rotating shaft, an edge of the opening near a front side of the face frame includes a shaft hole matching the rotating shaft, and the lower panel is rotated from rear to front to open the opening.

Optionally, the lower panel includes at least one pair of rotating shafts, and the rotating shaft is one of the rotating shafts, the opening includes at least one pair of shaft holes, and the shaft hole is one of the shaft holes. Openings of one pair of the shaft holes are faced with each other, and one pair of the rotating shafts are spaced apart from each other and rotatably cooperated with the shaft holes, each rotating shaft is rotatably received in one corresponding shaft hole; and/or
the rotating shaft is connected to the lower panel through a rotating arm, and a side edge of the shaft hole is provided with a limiting protrusion, and the limiting protrusion is configured to abut the rotating arm to position the lower panel after the lower panel is rotated to a defined angle.

Optionally, an outer periphery of the shaft hole includes a guiding surface, and the rotating shaft is slid into the shaft hole along the guiding surface.

Optionally, an end surface of the rotating shaft includes a mating surface, and the rotating shaft is slid into the shaft hole along the mating surface.

Optionally, an outer periphery of the shaft hole includes a guiding surface, an end surface of the rotating shaft includes a mating surface, and the rotating shaft is slid into the shaft hole with the mating surface against the guiding surface.

Optionally, an edge of the opening near a rear side of the chassis includes a buckle hole, and another side of the lower panel includes a buckle inserted into the buckle hole.

Optionally, the buckle is in a plate shape and vertically protruded from an inner side of the lower panel, and a free end of the buckle is bent rearwards, and the buckle hole is flared in shape.

Optionally, an edge of the opening near a rear side of the chassis includes a snap fastener assembly, and another side of the lower panel includes a lock head locked with the snap fastener assembly.

Optionally, the lock head has a columnar structure with different diameters in different areas;
the snap fastener assembly includes:.

Optionally, one of a middle portion of each end of the lower panel on a left-right direction and a middle portion of the corresponding edge of the opening on the left-right direction includes a clamping hole, and other one includes a clamping member cooperated with the clamping hole.

Optionally, the indoor unit of the air conditioner further includes an upper panel, a side of the upper panel is rotatably connected to an upper side of the face frame, and another side of the upper panel is fitted to the lower panel.

Optionally, the front side of the face frame includes a mounting hole, the mounting hole being covered by the upper panel.

Optionally, both ends of the upper panel include a cover, the covers covering outer side walls of the face frame, and both ends of the lower panel include a flange protruded towards the face frame, and an outer wall surfaces of each of the flanges is coplanar with one corresponding outer wall surface of the cover after the opening is covered by the lower panel.

Optionally, the indoor unit of the air conditioner further includes an air guiding assembly, the air guiding assembly is detachably connected to an edge of the air outlet; or
the air guiding assembly is mounted on the face frame and disposed facing the air outlet.

Optionally, the air passage member includes a wind wheel, a volute tongue and a volute both provided on the chassis, the volute tongue is cooperated with the volute to define an air passage communicating with the air outlet, and the wind wheel is located within the air passage.

The present disclosure further provides an air conditioner including an indoor unit of the air conditioner, the indoor unit of the air conditioner including:.

In the technical solutions of the present disclosure, a lower portion of a housing of an indoor unit of an air conditioner includes an opening, an air passage member is exposed from the opening, a lower panel is rotatably connected to the opening or an edge of the air passage member, and the lower panel is rotated to open the opening for exposing the air passage member. As such, a large space is left for cleaning the air passage member, which improves the convenience of cleaning. Besides, another side of the lower panel is detachably connected to the housing or the air passage member, such that the installation of the lower panel on the housing is more stable, thereby preventing the accidental opening of the lower panel from posing a danger to people. Therefore, the structural stability of the indoor unit of the air conditioner is improved, and the working performance is improved.

In order to more clearly illustrate the embodiments of the present disclosure or the technical solutions in the related art, the drawings used in the embodiments or the related art will be briefly described below. It will be appreciated that the drawings in the following description are only some embodiments of the present disclosure. It will be apparent to those skilled in the art that other figures can be obtained from the structures illustrated in the drawings without the inventive effort.

The realization of the objective, functional characteristics, advantages of the present disclosure are further described with reference to the accompanying drawings.

The technical solutions of the embodiments of the present disclosure will be clearly and completely described in the following with reference to the accompanying drawings. It is appreciated that the embodiments to be described are only a part rather than all of the embodiments of the present disclosure. All other embodiments obtained by persons skilled in the art based on the embodiments of the present disclosure without creative efforts shall fall within the protection scope of the present disclosure.

It is to be understood that, all of the directional instructions in the embodiments of the present disclosure (such as top, bottom, left, right, front, rear. ) can only be used for explaining relative position relations, moving condition of the elements under a special form (referring to figures), and so on, if the special form changes, the directional instructions changes accordingly.

In the present disclosure, unless specified or limited otherwise, the terms "connected", "fixed" and the like are used broadly. For example, "fixed" can be fixed connections, detachable connections, or integral connections; may also be mechanical or electrical connections; may also be direct connections or indirect connections via intervening structures, may also be inner connecting of two elements, or interaction relationship between two elements. For those skilled in the art, the specific meanings of the above terms in the present disclosure can be understood according to specific situations.

In addition, the descriptions, such as the "first", the "second" in the embodiment of present disclosure, can only be used for describing the aim of description, and cannot be understood as indicating or suggesting relative importance or impliedly indicating the number of the indicated technical character. Therefore, the character indicated by the "first", the "second" can express or impliedly include at least one character. Besides, the technical solution of each embodiment can be combined with each other, however the technical solution must base on that the ordinary skill in that art can realize the technical solution, when the combination of the technical solutions is contradictory or cannot be realized, it should consider that the combination of the technical solutions does not exist, and is beyond the protection scope of the present disclosure.

The present disclosure provides an indoor unit of an air conditioner <NUM>.

In the present disclosure, as shown in <FIG>, the indoor unit of the air conditioner <NUM> includes:.

In the present embodiment, the indoor unit of the air conditioner <NUM> includes the housing <NUM>. The housing <NUM> includes the chassis <NUM>, and the face frame <NUM>. The face frame <NUM> and the chassis <NUM> are enclosed to form a mounting cavity. A heat exchanger <NUM> and the air passage member <NUM> are mounted in the mounting cavity, and the heat exchanger <NUM> is disposed above the air passage member <NUM>. The surface of the chassis <NUM> facing away from the face frame <NUM> is detachably connected with a wall panel (not shown), and the indoor unit of the air conditioner <NUM> is mounted to the wall through the wall panel. The top wall of the face frame <NUM> of the present disclosure includes an air inlet 130a, that is, the indoor unit of the air conditioner <NUM> is ventilated from the top. The indoor unit of the air conditioner <NUM> includes an air outlet 120a communicated with the mounting cavity. The outside air enters the indoor unit of the air conditioner <NUM> through the air inlet 130a. After the outside air is exchanged by the heat exchanger <NUM>, it is blown out through the air outlet 120a by the driving of the air passage member <NUM>.

The lower portion of the face frame <NUM> includes the opening 130b corresponding to the air passage member <NUM>. The air passage member <NUM> includes a wind wheel <NUM>, a volute tongue, a volute <NUM>, a water tray disposed on the volute <NUM>, and an air guiding assembly, such that the air passage member <NUM> located inside the opening 130b can be exposed when the lower panel <NUM> is opened, and the air passage member, the volute tongue, the water tray, the volute <NUM> and the wind wheel <NUM> are sequentially from the outside to the inside. The volute <NUM> of the present disclosure may be integral with the chassis <NUM>. Alternatively, the volute <NUM> may be separate from the chassis <NUM>, but may be fixedly mounted integrally with the chassis <NUM>. The heat exchanger <NUM> includes at least a front heat exchange unit <NUM> and a rear heat exchange unit <NUM> cooperated with the front heat exchange unit <NUM> to form a downward flare, and the rear heat exchange unit <NUM> is adjacent to the mounting wall. The volute tongue and volute <NUM> define an air passage <NUM>, the wind wheel <NUM> is located within the air passage <NUM>. The inlet of the air passage <NUM> is communicated with the flare formed by the heat exchanger <NUM>, the outlet of the air passage <NUM> is communicated with the air outlet 120b. Under the driving of the wind wheel <NUM>, the outside air enters through the air inlet 130a, passes through the air passage <NUM>, and is blown out by the air outlet 120a.

The water tray on the volute <NUM> of the present disclosure may be divided into a front water tray <NUM> and a rear water tray <NUM>. The front water tray <NUM> is configured to receive the condensed water generated during the heat exchange process of the front heat exchange unit <NUM>, and the rear water tray <NUM> is configured to receive the condensed water generated during the heat exchange process of the rear heat exchange unit <NUM>. At least one of the two ends of the water tray at the left-right direction includes an outlet hose. A drain pipe is connected to the outlet hose of the water tray to discharge the condensed water to the indoor unit of the air conditioner <NUM>. The outlet hose is also exposed to the opening 130b, which makes it easier to disassemble or repair the drain pipe.

Besides, the indoor unit of the air conditioner <NUM> further includes an electric control box <NUM> disposed at one end of the heat exchanger <NUM>. In order to facilitate the connection of wires of the indoor unit of the air conditioner <NUM>, the electric control box <NUM> is also exposed to the opening 130b. Therefore, when the lower panel <NUM> is opened for cleaning or connecting the pipeline, it is also convenient to connect the wires, thereby further improving the installation efficiency.

In the technical solutions of the present disclosure, a lower portion of a housing <NUM> of an indoor unit of an air conditioner <NUM> includes an opening 130b, an air passage member <NUM> is exposed from the opening 130b, a lower panel <NUM> is rotatably connected to the opening 130b or an edge of the air passage member <NUM>, and the lower panel <NUM> is rotated to open the opening 130b for exposing the air passage member <NUM>. As such, a large space is left for cleaning the air passage member <NUM>, which improves the convenience of cleaning. Besides, another side of the lower panel <NUM> on the front-rear direction is detachably connected to the housing <NUM> or the air passage member <NUM>, such that the installation of the lower panel <NUM> on the housing <NUM> is more stable, thereby preventing the accidental opening of the lower panel <NUM> from posing a danger to people. Therefore, the structural stability of the indoor unit of the air conditioner <NUM> is improved, and the working performance is improved.

Referring to <FIG>, an air guiding assembly <NUM> is detachably connected to an edge of the air outlet 120a; or
the air guiding assembly <NUM> is mounted on the face frame <NUM> and disposed facing the air outlet 120a.

In the present embodiment, the air guiding assembly <NUM> includes a louver assembly and an air guiding plate <NUM>. The louver assembly may guide the wind of the air outlet 120a on the left-right direction, and the air guiding plate <NUM> is rotatably connected to the face frame <NUM> or the lower panel <NUM>. Thereby, the wind of the air outlet 120a on the up-down direction is guided, and the two cooperate to enhance the air blowing effect. In the present embodiment, the louver assembly is mounted on the chassis <NUM>, the air guiding plate <NUM> is detachably connected to an edge of the air outlet 120a, and a driving motor is connected to one side of the air guiding plate <NUM>. When the lower panel <NUM> is rotated and opened, the air guiding plate <NUM> and the driving motor can be repaired or cleaned, and the louver structure can be conveniently cleaned or repaired, thereby further improving the convenience of cleaning.

Referring to <FIG>, <FIG> and <FIG>, a refrigerant pipe <NUM> is connected with the heat exchanger <NUM> and including a connector. The chassis <NUM> includes a dismounting hole <NUM>. The lower panel <NUM> includes an avoiding hole <NUM> corresponding to the dismounting hole <NUM>, and the connector of the refrigerant pipe <NUM> is exposed from the dismounting hole <NUM> and the avoiding hole <NUM>. The cover plate <NUM> is detachably connected to a periphery of the avoiding hole <NUM> for closing or opening the avoiding hole <NUM> and the dismounting hole <NUM>.

The heat exchanger <NUM> is connected to the refrigerant pipe <NUM> so that a circulating refrigerant flow path is formed between the indoor unit of the air conditioner <NUM> and the outdoor unit of the air conditioner. Because it is necessary to perform operations such as take-over cleaning during the installation process or during the routine maintenance process of the indoor unit of the air conditioner <NUM>, the indoor unit of the air conditioner <NUM> needs to be connected to the outdoor unit of the air conditioner to form a refrigerant pipe circulation path. In the present disclosure, a bottom plate <NUM> is disposed at a bottom of the chassis <NUM>, and the bottom plate <NUM> includes a dismounting hole <NUM> that communicates with the mounting cavity. The lower panel <NUM> includes an avoiding hole <NUM> corresponding to the dismounting hole <NUM>, and the connector of the refrigerant pipe <NUM> and the drain pipe can be exposed from the dismounting hole <NUM> and the avoiding hole <NUM>. The cover plate <NUM> is connected to a periphery of the avoiding hole <NUM> for closing or opening the avoiding hole <NUM> and the dismounting hole <NUM>. The dismounting hole <NUM> extends in the left-right direction of the indoor unit of the air conditioner <NUM> and is elongated, and the dismounting hole <NUM> may at least expose the connectors of the refrigerant pipe <NUM> and the drain pipe. The width of the dismounting hole <NUM> on the front-rear direction of the indoor unit of the air conditioner <NUM> should be suitable for the hand or the tool to be inserted to directly disassemble the refrigerant pipe <NUM> and the drain pipe.

Specially, an outer edge of the avoiding hole <NUM> includes a first locking structure. Correspondingly, an inner side wall of the cover plate <NUM> includes a second locking structure. The cover plate <NUM> is detachably connected to the lower panel <NUM> through the cooperation of the first locking structure and the second locking structure. The first locking structure may be clamped into, inserted into, rotatably connected to, or magnetically attached to the second locking structure, which is not limited herein.

Referring to <FIG> and <FIG>, optionally, a periphery of the air outlet 120a includes a connecting hole <NUM>. The air passage member <NUM> includes a mounting hole <NUM> corresponding to the connecting hole <NUM>. The locking member is passed through the connecting hole <NUM> and the mounting hole <NUM> for connecting the lower panel <NUM> with the air passage member <NUM>.

In the present embodiment, in order to increase the stability of the connection between the lower panel <NUM> and the face frame <NUM>, a low periphery of the air outlet 120a includes at least one connecting hole <NUM>, and the bottom plate <NUM> of the air passage member <NUM> includes a mounting hole <NUM> corresponding to the connecting hole <NUM>. Since the position of the air outlet 120a is located at a middle position of the lower panel <NUM> on the left-right direction, the locking member is passed through the connecting hole <NUM> and the mounting hole <NUM>, and the connection between the lower panel <NUM> and the middle portion of the face frame <NUM> can be increased, thereby increasing the stability of the connection between the lower panel <NUM> and the face frame <NUM>. As such, it avoids that the two ends of the upper and lower sides are connected to cause a large gap in the middle, which affects the air volume and the air outlet effect.

Referring to <FIG>, a side of the lower panel <NUM> on the front-rear direction includes a rotating shaft <NUM>. An edge of the opening 130b near a front side of the face frame <NUM> includes a shaft hole <NUM> matching the rotating shaft <NUM>. The lower panel <NUM> is rotated from rear to front to open the opening 130b.

In the present embodiment, the lower panel <NUM> is rotatably connected to the face frame <NUM> through the cooperation of the rotating shaft and the shaft hole. An upper side of the lower panel <NUM> includes a rotating shaft <NUM>. The lower side of the front side of the face frame <NUM> includes a shaft hole <NUM>, that is, near the edge of the opening 130b. The lower panel <NUM> is rotated more smoothly from front to rear with respect to the face frame <NUM> through the cooperation of the rotating shaft <NUM> on the shaft hole <NUM>. At least one rotating shaft <NUM> is provided, and two rotating shafts <NUM> may be provided. The two rotating shafts <NUM> are disposed at both ends of one side of the lower panel <NUM>, thereby improving the stability of the rotational connection. It is obvious that the lower panel <NUM> may also be rotatably connected to the face frame <NUM> through a plug-in jack structure, a rotating snap structure or the like.

In a specific embodiment, the lower panel <NUM> includes at least one pair of rotating shafts <NUM>, and the rotating shaft <NUM> is one of the rotating shafts <NUM>. The opening 130b includes at least one pair of shaft holes <NUM>, and the shaft hole <NUM> is one of the shaft holes <NUM>. One pair of the shaft holes <NUM> are faced with each other, and one pair of the rotating shafts <NUM> are spaced apart from each other, each rotating shaft <NUM> is rotatably received in one corresponding shaft hole <NUM>; and/or
the rotating shaft <NUM> is connected to the lower panel through a rotating arm, and a side edge of the shaft hole <NUM> is provided with a limiting protrusion <NUM>, and the limiting protrusion <NUM> is configured to abut the rotating arm to position the lower panel after the lower panel is rotated to a defined angle.

In the present embodiment, one pair of the rotating shafts <NUM> are provided. One pair of the rotating shafts <NUM> include two rotating shafts <NUM> which are opposite to each other. Correspondingly, one pair of the shaft holes <NUM> include two shaft holes <NUM> which are opposite to each other, and an avoiding space is provided between the two shaft holes <NUM> to facilitate the rotation of the lower panel <NUM> and the installation of the rotating shaft <NUM>. The structure is arranged such that the cooperation between the two rotating shafts <NUM> and the two shaft hole <NUM> has a tendency to resist each other, so that the rotational connection is more stable, and there is no risk of accidental falling off, thereby improving the stability of the installation of the lower panel <NUM>.

In order to further facilitate the rotation of the lower panel <NUM>, a rotating arm is protruded from one side of the lower panel <NUM>, and the other end of the rotating arm is connected to the rotating shaft <NUM>. When the rotating shaft <NUM> is installed in the shaft hole <NUM>, the rotating arm may abut against the side wall of the avoiding space, so that the rotation of the lower panel <NUM> is more stable. Meanwhile, in order to facilitate the cleaning or maintenance operation when opening the lower panel <NUM>, a limiting protrusion <NUM> is provided, the limiting protrusion <NUM> is disposed at the periphery of a side of the shaft hole <NUM>, and is located at the periphery of the opening 130b of the limiting space. When the rotating shaft <NUM> is rotated and opened from rear to front, it is rotated to a suitable defined angle, the lower panel <NUM> is loosened. The limiting protrusion <NUM> may abut against the surface of the rotating arm in the rotating direction, thereby limiting the lower panel <NUM>, thus improving the convenience and safety of cleaning.

Referring to <FIG> and <FIG> again, an outer periphery of the shaft hole <NUM> includes a guiding surface <NUM>, and the rotating shaft <NUM> is slid into the shaft hole <NUM> along the guiding surface <NUM>; or.

In the present embodiment, an outer periphery of the shaft hole <NUM> includes a guiding surface <NUM>. The guiding surface <NUM> gradually slopes towards the inside of the face frame <NUM> from one shaft hole <NUM> to the other shaft hole <NUM>. An end surface of the rotating shaft <NUM> includes a mating surface <NUM>. The mating surface <NUM> faces the shaft hole <NUM> and is parallel to the guiding surface <NUM>. Therefore, when the lower panel <NUM> is installed, the mating surface <NUM> of the two rotating shafts <NUM> is pressed against the guiding surface <NUM>, and the rotating shaft <NUM> can be slid into the shaft hole <NUM>, thereby improving the efficiency and convenience of installation.

Referring to <FIG>, an edge of the opening 130b near a rear side of the chassis <NUM> includes a buckle hole <NUM>, and another side of the lower panel <NUM> includes a buckle <NUM> inserted into the buckle hole <NUM>; or
an edge of the opening 130b near a rear side of the chassis <NUM> includes a snap fastener assembly, and another side of the lower panel <NUM> includes a lock head locked with the snap fastener assembly.

In the present embodiment, when one side of the lower panel <NUM> is rotatably connected to the face frame <NUM>, the other side of the lower panel <NUM> may be a buckle <NUM> connection to the face frame. For example, the other side of the lower plate <NUM> includes a buckle <NUM>, and the face frame <NUM> includes a buckle hole <NUM> corresponding to the buckle <NUM>. The lower panel <NUM> may be connected to the face frame <NUM> by pressing the other side of the lower panel <NUM>, which is simple and convenient, and improves the convenience of disassembly and assembly. Specially, the buckle <NUM> is in a plate shape and vertically protruded from an inner side of the lower panel <NUM>, and a free end of the buckle <NUM> is bent rearwards, and the buckle hole <NUM> is flared in shape. The buckle <NUM> is inserted into the buckle hole <NUM>, and the end portion thereof can effectively achieve the fastening. The snap structure may also be a cooperation of the lock head and the snap fastener assembly. Specially, the lock head has a columnar structure with different diameters in different areas. The snap fastener assembly includes: a cylinder structure, an end of the cylindrical structure defining a hole; a large slider installed in the cylinder structure and internally provided with a circulating guide; a spring disposed between the large slider and the cylinder structure; two jaws connected with the large slider and exposed out of the hole of the cylinder structure; and a swinging needle connected with the cylinder structure and the large slider. The swinging needle is hooked into the circulating guide. Thereby, when the lock head presses the large slider, the two jaws are driven to hold the lock head. When the lock head presses the large slider again, with the cooperation of the swinging needle, the large slider, the spring, and the circulating guide, the two jaws release the lock head to disarm the connection state. The function of locking and unlocking can be completed only by repeating the pressing operations, which further saves time and effort. Besides, the detachable connection of the other side of the lower plate <NUM> to the face frame <NUM> may also be a magnetic attachment or a screw connection or the like, which is not limited herein.

In an alternative embodiment, one of a middle portion of each end of the lower panel <NUM> on a left-right direction and a middle portion of the corresponding edge of the opening 130b on the left-right direction includes a clamping hole <NUM>, and other one includes a clamping member <NUM> cooperated with the clamping hole <NUM>.

In the present embodiment, since both sides of the lower panel <NUM> are connected to the face frame <NUM>, in order to increase the connection between the two ends, a snap connection of the clamping hole <NUM> and the clamp member <NUM> is provided. Thereby, the connection stability of the lower panel <NUM> is further improved, and the airflow of the air passage <NUM> assembly can be prevented from being affected by the gap.

Referring to <FIG>, the indoor unit of the air conditioner <NUM> further includes an upper panel <NUM>. A side of the upper panel <NUM> is rotatably connected to an upper side of the face frame <NUM>, and another side of the upper panel <NUM> is fitted to the lower panel <NUM>.

In the present embodiment, the front side of the face frame <NUM> includes a mounting hole, and the upper panel <NUM> covers the mounting hole for protection and decorative effects. Of course, the indoor unit of the air conditioner <NUM> with the filter assembly can be detached from the mounting hole. In order to facilitate disassembly and assembly, the connection between the upper panel <NUM> and the face frame <NUM> is a rotational connection, which can be opened from rear to front. When the upper panel <NUM> covers the mounting hole, the other side of the upper panel <NUM> is fitted to the lower panel <NUM>. The specific fastening manner may be a buckle <NUM>, a buckle hole or a magnetic attachment. In the present embodiment, the inner side surface of the upper panel <NUM> includes a third snap structure, and the outer side wall of the lower panel <NUM> includes a fourth snap structure, and the upper panel <NUM> can be lightly pressed to realize locking, which is simple and convenient. Of course, the upper panel <NUM> can also be fitted to the face frame <NUM> and disposed only in conjunction with the edge of the lower panel <NUM>.

Referring to <FIG> and <FIG>, both ends of the upper panel <NUM> include a cover <NUM>, the covers <NUM> covering outer side walls of the face frame <NUM>. Both ends of the lower panel <NUM> include a flange <NUM> protruded towards the face frame <NUM>. An outer wall surfaces of each of the flanges <NUM> is coplanar with one corresponding outer wall surfaces of the cover <NUM> after the opening 130b is covered by the lower panel <NUM>.

Or, both end surfaces of the lower panel <NUM> are coplanar with the outer wall surfaces of the face frame <NUM>;.

And/or, the rear end surface of the lower panel <NUM> is coplanar with the outer wall surface of the chassis <NUM>.

In the present embodiment, the lower plate <NUM> may cover the opening 130b of the entire face frame <NUM>, and the opening 130b includes the entire lower side space and a portion of the front side space of the face frame <NUM>. Therefore, the rear end surface of the lower panel <NUM> directly abuts against the outer wall surface of the chassis <NUM>, thereby achieving the function of completely covering the opening 130b. Of course, the rear end surface of the lower panel <NUM> can also be coplanar with the outer wall surface of the chassis <NUM> to directly abut against the wall or the wall panel. Both end surfaces of the lower plate <NUM> may be coplanar with the outer wall surfaces of the face frame <NUM> or may be wrapped around the outer wall surfaces of the face frame <NUM>. Specifically, both ends of the lower panel <NUM> include a flange <NUM> convexly towards the face frame <NUM>. The inner wall surface of the flange <NUM> abuts against the outer wall surface of the face frame <NUM> to form a covering structure. On the one hand, the sealing property of the covering can be increased, and on the other hand, the stability of the rotation can be realized according to the flange <NUM>, and the deviation on the left-right direction can be avoided to cause the rotation to be unsmooth. Correspondingly, both ends of the upper panel <NUM> also include a cover <NUM>, which can also provide a guiding rotation and can be tightly sealed. When the upper panel <NUM> covers the mounting hole, the outer wall surfaces of the cover <NUM> are coplanar with the outer wall surfaces of the flange <NUM>, which can be more beautiful in appearance and further provides the tightness of the anastomotic connection.

Claim 1:
An indoor unit of an air conditioner (<NUM>), comprising:
a housing (<NUM>) comprising:
a chassis (<NUM>); and
a face frame (<NUM>) connected to the chassis (<NUM>), a lower portion of the face frame (<NUM>) defining an opening (130b);
an air passage member (<NUM>) disposed on the chassis (<NUM>) and exposed from the opening (130b); and
a lower panel (<NUM>) comprising:
an air outlet (120a) communicated with the air passage member (<NUM>), wherein a side of the lower panel (<NUM>) on a front-rear direction is rotatably connected to a side edge of the opening (130b) or a side of the air passage member (<NUM>), and another side of the lower panel (<NUM>) is detachably connected to another side edge of the opening (130b) or another side of the air passage member (<NUM>), and the lower panel (<NUM>) is rotated to open or cover the opening (130b) for exposing or shielding the air passage member (<NUM>);
characterised by:
a heat exchanger (<NUM>) installed in the housing (<NUM>);
a refrigerant pipe (<NUM>) connected with the heat exchanger (<NUM>) and comprising a connector; and
a cover plate (<NUM>),
characterized in that
the chassis (<NUM>) comprises a dismounting hole (<NUM>),
in that the lower panel (<NUM>) comprises an avoiding hole (<NUM>) corresponding to the dismounting hole (<NUM>), and the connector of the refrigerant pipe (<NUM>) is exposed from the dismounting hole (<NUM>) and the avoiding hole (<NUM>), and
in that the cover plate (<NUM>) is detachably connected to a lower periphery of the avoiding hole (<NUM>) for closing or opening the avoiding hole (<NUM>) and the dismounting hole (<NUM>).