Patent Publication Number: US-2023151530-A1

Title: Clothing treatment apparatus

Description:
BACKGROUND 
     Field of the Invention 
     The present disclosure relates to a clothing treatment apparatus. 
     Related Art 
     In general, the clothing treatment apparatus may include a washing machine, a dryer, and the like. The washing machine may be a washing machine with a drying function. 
     Among conventional clothing treatment apparatuses, there is a drawer-type clothing treatment apparatus including a cabinet, a drawer withdrawable from the cabinet, and an accommodating part provided inside the drawer to provide a space for treating clothes such as washing or drying clothes. 
     The drawer-type clothing treatment apparatus is designed in such a way that a volume of the cabinet is minimized so that it can be positioned on a lower surface or an upper surface of the apparatus for washing or drying. Since the volume of the cabinet is smaller than that of a general clothes treatment apparatus, the drawer withdrawable from the cabinet and the accommodating part provided in the drawer are also designed in such a way to minimize the volume thereof. 
     Since the volume of the accommodating part is a factor that determines the capacity (washing capacity, drying capacity) of the drawer-type clothes processing apparatus, maximizing the volume of the accommodating part in a limited space provided by the cabinet and the drawer is a major design consideration for the drawer-type clothing treatment apparatus. 
     SUMMARY 
     An aspect of the present disclosure provides a dryer, a washing machine, or a dryer-combined washing machine capable of maximizing the volume of a tub and a drum, or a clothing treatment apparatus for refreshing clothing. 
     Another aspect of the present disclosure provides a clothing treatment apparatus capable of maximizing the volume of the tub and the drum positioned inside a drawer whose width is set to be greater than a height. 
     Yet another aspect of the present disclosure provides a clothing treatment apparatus capable of easily controlling vibration of a tub and a drum. 
     Yet another aspect of the present disclosure provides a clothing treatment apparatus for minimizing a risk of damage to a drain pipe and a heating part provided at a bottom surface of a tub while maximizing the volume of the tub. 
     In an aspect, there is provided a clothing treatment apparatus includes a tub, a chamber, and a chamber drain pipe connected to the chamber. 
     The chamber is formed to protrude from the bottom surface of the tub. 
     The chamber drain pipe extends from a side surface of the chamber in a direction away from a center of the tub. 
     The clothing treatment apparatus includes a cabinet, a tub, a drum and a driver. 
     The tub may be provided inside the cabinet to provide a space for storing water, and may have a cylindrical shape with a width set to be greater than a height. 
     The drum may be rotatably provided inside the tub. 
     The driver may be fixed to the bottom surface of the tub, located outside the tub, and rotate the drum. 
     The clothing treatment apparatus may further include a drain pipe for guiding water discharged through the chamber drain pipe to the outside of the cabinet. 
     The chamber drain pipe may be coupled to one end of the drain pipe from the outside of the cylinder extending the outer circumferential surface of the tub and thus coupled thereto. 
     The clothing treatment apparatus may further include a drawer formed in the cabinet to be withdrawable and accommodating the tub therein. 
     The chamber drain pipe may extend in a direction inclined to a direction in which the drawer is withdrawn out from the cabinet. 
     The clothing treatment apparatus may further include a heater for heating water in the tub. The heater may be accommodated in the chamber. 
     The chamber may include a heating chamber accommodating the heater, and a water collecting chamber protruding from a bottom surface of the heating chamber toward a bottom surface of the cabinet to form a space in which water is stored. 
     The chamber drain pipe may extend in a direction away from the center of the tub from a side surface of the water collecting chamber. 
     A side surface and/or a bottom surface of the water collecting chamber may be inclined downward toward the chamber drain pipe. 
     The bottom surface of the tub may include a first bottom surface formed in the center of the tub, a second bottom surface formed more outside the tub than the first bottom surface and located below the first bottom surface, and an inclined surface formed to be inclined downward from the first bottom surface toward the second bottom surface. 
     The driver may be located below the first bottom surface. 
     The chamber may be formed to be spaced apart from the driver and protrude from the second bottom surface to a bottom surface of the cabinet. 
     A height of the lowest point of the second bottom surface may be equal to or higher than a height of a lowest point of the driver with respect to the bottom surface of the cabinet. 
     A height of a lowest point of the chamber drain pipe may be equal to or lower than a height of a lowest point of the chamber with respect to the bottom surface of the cabinet. 
     A height of a lowest point of the chamber drain pipe may be equal to or higher than a height of a lowest point of the driver with respect to the bottom surface of the cabinet. 
     According to one aspect of the present disclosure, the chamber drain pipe may be provided to be positioned between the bottom surface of the tub and the lowest point of the rotor. That is, a height of a lowest point of the chamber drain pipe may be set to be equal to or higher than a height of a lowest point of the rotor. 
     The center of the chamber drain pipe may be provided to be located at a position higher than a position of the bottom surface of the water collecting chamber. 
     The bottom surface of the water collecting chamber may be inclined downward toward the chamber drain pipe. 
     The clothing treatment apparatus may further include a guide protruding from the bottom surface of the water collecting chamber toward the bottom surface of the cabinet to form a passage for guiding water to the chamber drain pipe, and a height of a lowest point of the chamber drain pipe may be set to be equal to or lower than a height of a lowest point of the guide. 
     A cross section of the guide may be provided in a semicircular or arc shape, and a bottom surface of the guide may be inclined downward toward the chamber drain pipe. 
     A distance from a side surface of the water collecting chamber to a free end of the chamber drain pipe may be set greater than a distance from a side surface of the water collecting chamber to a circumferential surface of the tub. 
     According to one aspect of the present disclosure, the bottom surface of the heating chamber may be provided to be inclined downward toward the chamber drain pipe. 
     The clothing treatment apparatus may further include a guide protruding from a bottom surface of the heating chamber toward the bottom surface of the cabinet to form a passage for guiding water to the chamber drain pipe, and a height of a lowest point of the chamber drain pipe may be set to be equal to or lower than a height of a lowest point of the guide. 
     A cross section of the guide may be provided in a semicircular or arc shape, and a bottom surface of the guide may be inclined downward toward the chamber drain pipe. 
     A distance from a side surface of the heating chamber to the free end of the chamber drain pipe may be set to be greater than a distance from a side surface of the heating chamber to the circumferential surface of the tub. 
     According to at least one of the embodiments of the present disclosure, it is possible to maximize the volume of the tub and the drum of the clothing treatment apparatus. 
     According to at least one of the embodiments of the present disclosure, it is possible to maximize the volume of the tub and the drum positioned inside the drawer whose width is set to be greater than a height. 
     According to at least one of the embodiments of the present disclosure, it is possible to easily control vibration of the tub and the drum of the clothing treatment apparatus. 
     According to at least one of the embodiments of the present disclosure, it is possible to minimize a risk of damage to the drain pipe and the heating part provided on the bottom surface of the tub while maximizing the volume of the tub. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIGS.  1  and  2    are views showing a clothing treatment apparatus according to an embodiment of the present disclosure. 
         FIGS.  3  and  4    show a balancer according to an embodiment of the present disclosure. 
         FIGS.  5  to  6    show a balancer according to an embodiment of the present disclosure. 
         FIGS.  7 ,  8 , and  9    show a heating part and a draining part according to an embodiment of the present disclosure. 
         FIG.  10    shows a heating part and a draining part according to an embodiment of the present disclosure. 
     
    
    
     DESCRIPTION OF EXEMPLARY EMBODIMENTS 
     Description will now be given in detail according to exemplary embodiments disclosed herein, with reference to the accompanying drawings. For the sake of brief description with reference to the drawings, the same or equivalent components may be provided with the same or similar reference numbers, and description thereof will not be repeated. 
     In general, a suffix such as “module” and “unit” may be used to refer to elements or components. Use of such a suffix herein is merely intended to facilitate description of the specification, and the suffix itself is not intended to give any special meaning or function. 
     In addition, in the following description of the embodiments, a detailed description of known functions and configurations incorporated herein will be omitted when it may impede the understanding of the embodiments. In addition, the accompanying drawings are used to help one easily understand various technical features and it should be understood that the embodiments presented herein are not limited by the accompanying drawings. 
     While terms including ordinal numbers, such as “first”, “second,” etc., may be used to describe various components, such components are not limited by the above terms. The above terms are used only to distinguish one component from another. 
     For example, a first component may be referred to as a second component without departing from the scope of the present disclosure, and, likewise, a second component may be referred to as a first component. When a component is referred to as being “directly connected” or “directly accessed” to other component, it should be understood that there is no component therebetween. 
     The singular forms are intended to include the plural forms as well, unless the context clearly indicates otherwise. 
     Furthermore, although each drawing is described for convenience of description, combining at least two or more drawings by those skilled in the art to implement another embodiment also falls within the scope of the present disclosure. 
     As shown in  FIG.  1   , a clothing treatment apparatus  100  according to an embodiment of the present disclosure may include a cabinet  1  provided with an outlet  111  on a front surface  11 , a tub  3  provided inside the cabinet to provide a space where water is stored, and a drum  4  rotatably provided inside the tub. The clothing treatment apparatus  100  may further include a drawer  2  withdrawable out of the cabinet  1  through the outlet  111 . The tub  3  may be provided inside the drawer  2 . 
     The drawer  2  may include a drawer body  21 , a drawer cover  23  forming an upper surface of the drawer body, and a drawer panel  25  fixed to the drawer body  21 . 
     The drawer body  21  may be provided in a hexahedral shape having an upper side open, and the drawer cover  23  may be fixed to an upper end of the drawer body  21  to form an upper surface of the drawer  2 . 
     The drawer panel  25  may be provided as a means (handle) for opening and closing the drawer  111  (cabinet door), as well as a means for facilitating withdrawing the drawer body  21  from the cabinet  1  and inserting the drawer body  21  into the cabinet  1 . 
     A control panel  251  for controlling operation of the clothing treatment apparatus  100  may be provided at an upper surface of the drawer panel  25 . The control panel  251  is a means for receiving a control command required to operate a means (water supply part, draining part) for supplying or draining water to or from the tub  3  (a water supply part, a draining part) or to operate a means (driver) for rotating the drum  4 . That is, the control panel  251  may include an input part that allows a user to input a control command to the clothing treatment apparatus, and a display unit may be provided for notifying the user of the confirmation of the control command input through the input unit or the execution process of the control command input by the user. 
     The drawer cover  23  may be provided with an entry hole  231  passing through the drawer cover  23  and communicating with the inside of the drawer body  21 , and a drawer cover  23  passing through the drawer cover  23  and allowing a water supply pipe  51 , which will be described later, to be inserted thereinto. 
     The cabinet  1  may have a length in a width direction (Y-axis direction) longer than a length in a height direction (Z-axis direction) (a length of a drawer in a width direction may be longer than a length thereof in a height direction). This allows the clothing treatment apparatus  100  to be positioned below or above another treatment apparatus capable of washing or drying clothing, and makes it easier for a user to access the control panel  251  and the entry hole  231 . 
     As shown in  FIG.  2   , the tub  3  may include a tub body  31  positioned inside the drawer body  21  to provide a space for storing water. 
     The tub body  31  may be provided in a cylindrical shape with an upper side open. When a width of the drawer body  21  is set to be greater than a height of the drawer body, a width of the tub body  31  may be set to be greater than a height of the tub body. 
     The tub body  31  may be movably fixed inside the drawer body  21  through a tub support part  37 . The tub support part  37  may include a first bracket  371  protruding from the drawer body  21  toward a circumferential surface of the tub body  21 , a second bracket  373  protruding from a circumferential surface of the tub body  31  toward a side surface and/or a rear surface of the drawer body and provided at a lower position than that of the first bracket  371 , and a support bar  375  having one end (upper end) connected to the first bracket  371  and the other end (lower end)) connected to the second bracket  373 . 
     The support bar  375  may be connected to the first bracket  371  through a first connecting portion  377  and may be connected to the second bracket  373  through the second connection part  378 . The support bar  375  may be connected to the first bracket  371  through a first connecting portion  377  and may be connected to the second bracket  373  through the second connecting portion  378 . Similarly, the second connecting portion  378  may be provided such that one end thereof supports the second bracket  373  and the other end thereof passes through the second bracket  373  through a second bracket through-hole  374 . In this case, the support bar  375  may be provided as a bar penetrating the first connecting portion  377  and the second connecting portion  378 . 
     An elastic body  379  may be further provided between an upper end of the support bar  375  and the first connecting portion  377  and between the lower end of the support bar  375  and the second connecting portion  378 . The elastic body  379  may be provided as a pad formed of rubber or the like, and the clothing treatment apparatus  100  may damp vibration of the tub body  31  through the elastic body. 
     The tub support part  37  having the above-described structure may be provided as a plurality of units, which are spaced apart from each other at the same angle with respect to a vertical line passing through the center of the tub body  31 . 
     The tub  3  may further include a tub cover  33  coupled to the tub body  31  to form an upper surface of the tub. 
     The tub cover  33  may include a cover body  33   a  positioned below the inlet  231 , and an extension body  33   b  bent from a circumferential surface of the cover body toward the top of the tub body  31 . 
     The cover body  33   a  may be provided with a tub entry hole  331  and a water supply port  333  for communicating an inner space of the tub body  31  with the outside. The tub entry hole  331  may be provided to be opened and closed by a door  39  rotatably coupled to the cover body  33   a.  Since the door  39  is positioned below the entry hole  231 , the door  39  may be rotated in a direction to open the tub entry hole  331  when the drawer is withdrawn from the cabinet. One end of a water supply pipe  51  to be described later is fixed to the water supply port  333 . 
     The extension body  33   b  is fixed to an upper end of the tub body  31  through the cover coupling portion  35 . The cover fastening part  35  is provided at the free end of the extension body  33   b  to provide a space in which the upper end of the tub body  31  is accommodated. It may be provided on the circumferential surface to include a second fastening part  353  coupled to the first fastening part  351 . 
     Unlike the above, the tub cover  33  may be provided with only the cover body  33   a  fixed to the upper end of the tub body  31 . 
     The tub  3  is supplied with water through a water supply unit. The water supply part may include a water supply pipe  51  connecting the water supply port  333  and a water supply source located outside the cabinet, and a water supply valve  53  for controlling the opening and closing of the water supply pipe according to a control signal from a controller. 
     The water stored in the tub  3  is discharged to the outside of the cabinet  1  through the draining part. The draining part may include a first drain pipe  61  connecting a bottom surface of the tub body  31  and the drain pump  63 , and a second drain pipe  65  guiding water discharged from the drain pump  63  to the outside of the cabinet  1 . A cabinet through-hole  131  through which the second drain pipe  65  passes may be provided at a rear surface of the cabinet. 
     The drum  4  may include a drum body  41  that is rotatably provided inside the tub  3  to provide a space for storing clothing. The drum body  41  may be provided in a cylindrical shape with an upper side open or a cylindrical shape having a through-hole in an upper surface. 
     A plurality of communication holes  43  for communicating the inside of the drum body  41  with the inside of the tub  3  may be provided in at least one of the circumferential surface and the bottom surface of the drum body  41 . 
     The drum body  41  is rotated by a driver. The driver may be fixed to the bottom surface of the tub  3  and positioned outside the tub. The driver may include a stator  471  fixed to the bottom surface of the tub body  31  and positioned outside the tub  3 , a rotor  473  rotated by a rotating magnetic field provided by the stator  471 , and a rotating shaft  475  connecting the drum body  41  and the rotor  473  through the bottom surface of the tub body  31 . As shown in  FIG.  2   , the rotating shaft  475  may be provided to form a right angle with respect to the entry hole  231  (to form a right angle with respect to the bottom surface of the tub body). 
     A balancer  8  may be provided at an upper end of the drum body  41 . The balancer  8  is a means for actively damping vibration generated in the drum body while the drum body  41  is rotated. 
     As shown in  FIG.  3   , the balancer  8  may include a housing  81  and  83  fixed to the drum body  41  to form an upper surface of the drum body, a housing through-hole  85  passing through the housing, a circulation passage  87  provided in a ring shape inside the housing to form a movement path of liquid, and the liquid stored in the circulation passage  87 . 
     Since the housing through-hole  85  is positioned below the tub entry hole  331 , clothing fed through the tub inlet  331  move into the drum body  41  through the housing through-hole  85 . Accordingly, the housing through-hole  85  serves as a drum entry hole. 
     The housing includes a first housing  81  provided in a ring shape, a fixed body  811  provided on a circumferential surface of the first housing  81  to fix the first housing  81  to the circumferential surface of the drum body  41 , and a second housing  83  provided in a ring shape and fixed to an upper surface of the first housing  81 . An upper end of the first housing  81  and an upper end of the second housing  83  may be coupled by thermal fusion. 
     As shown in  FIG.  4   , a lower end of the first housing  81  may be inserted into the drum body  41 , and the upper end of the first housing  81  may be provided to be exposed to the outside of the drum body  41 . 
     The fixed body  811  may be provided as a ring-shaped protrusion that protrudes from one surface of the first housing  81  (a side surface of the first housing) facing the circumferential surface of the drum body  41  toward the circumferential surface of the drum body  41 . That is, a diameter of the fixed body  811  may be set to be greater than a diameter of a lower end of the first housing  81  (a diameter of the fixed body may be set to be the same as a diameter of a through-hole in an upper surface of the drum body  41 , and a diameter of a lower end of the first housing may be set to be smaller than a diameter of the fixed body). 
     The first housing  81  may be provided with a ring-shaped first passage  871 , in which an upper surface of the first housing is provided with a groove bent concavely in a direction away from the cover body  33   a,  and a ring-shaped second passage  873  in which a bottom surface of the second housing  83  is provided as a groove bent concavely toward the cover body  33   a.  In this case, the circulation passage  87  may be formed by combining the first passage  871  and the second passage  873 . 
     An amount of liquid moving along the circulation passage will vary according to a volume of the circulation passage  87 , and thus, the balancer  8  having the above-described structure is advantageous in controlling vibration of the drum body  41  as the volume of the circulation passage  87  increases in a case where the same liquid is used. In addition, if a height of the housing  81  and  83  is increased to increase the volume of the circulation passage  87 , a length of the drum body  41  will increase, possibly increasing the volume of the drum body  41  (which is the effect of increasing a capacity of treating clothing). 
     Meanwhile, the above-described effect may be expected by increasing the height of the housing  81  and  83  and the volume of the circulation passage, but when the height of the center of gravity G of the balancer  8  is increased, an upper end of the drum body  41  and an upper end of the tub  3  vibrate more intensely. When the height of the center of gravity G of the balancer  8  is increased, a distance between a lower end of the tub support part  37  and the center of gravity G is increased (which means that a distance between a support point formed by the tub support part and the center of gravity of the entire drum is increased). This may mean that a distance (a length of the moment arm) perpendicular to a force acting on the center of gravity G from the lower end of the tub support part  37  (a force generated when liquid moves along the inside of the circulation passage) is increased, and the increased length of the moment arm may mean the upper end of the tub  3  possibly vibrates more intensely. 
     Accordingly, in order to minimize the height of the center of gravity G of the balancer while increasing the volume of the circulation passage and the height of the housing, it is preferable that a width W 1  of the first passage  871  is set wider than a width W 2  of the second passage  873 . 
     Making the width W 1  of the first passage wider than the width W 2  of the second passage may be implemented in various ways.  FIG.  4    illustrates an example in which a thickness T 1  of both side walls of the first housing  81  forming the first passage  871  is smaller than a thickness T 2  of both side walls of the second housing  83  forming the second passage  873 . 
     In this case, a point on both sides of the lower end of the second passage  873  facing the circumferential surface of the tub body  31  and a point on both sides of the upper end of the first passage  871  facing the circumferential surface of the tub body  31  may be connected so as not to form a step, and a point on both sides of the lower end of the second passage  873  toward the center of the drum body  41  and a point on both sides of the upper end of the first passage  871  toward the center of the drum body may be connected to form a step. 
     As shown in an enlarged view shown in the upper right side of  FIG.  4   , a point on both side surfaces of the lower end of the second passage  873  facing the circumferential surface of the tub body  31  and a point on both side surfaces of the upper end of the first passage  871  facing the circumferential surface of the tub body  31  may be connected to form a step, and a point on both sides of the lower end of the second passage  873  toward the center of the drum body  41  and a point on both side surfaces of the upper end of the first passage  871  facing the center of the drum body  41  may be connected so as not to form a step. 
     As shown in an enlarged view shown in a lower right side of  FIG.  4   , the both side surfaces of the lower end of the second passage  873  and the both side surfaces of the upper end of the first passage  871  may be connected to form a step. 
     In order to minimize the height of the center of gravity G of the balancer, it is preferable that the height of the bottom surface B of the circulation passage  87  (a height of the bottom surface of the first passage) is set lower than a height of the top of the drum body  41 . 
     In addition, when a width of the circulation passage  87  (a length of the circulation passage parallel to a radial direction of the drum body) is increased in order to increase a volume of the circulation passage  87 , the volume of the drum body is reduced (which means that an amount of clothing that can be treated in the drum body is reduced). Therefore, it is preferable that a width of the circulation passage  87  is set shorter than a height of the circulation passage (which is a length of the circulation passage parallel to a height direction of the drum body). 
     As shown in the drawings, the center of gravity G of the balancer may be set to be located inside the first passage  871 . In this case, the height of the first housing  81  may be set to be greater than the height of the second housing  83 . 
     A length of the second passage  873  (a depth of the second passage) with respect to the height direction of the drum body  41  may be equal to a length of the first passage  871  with respect to the height direction of the drum body  41  (a depth of the first passage) or may be shorter than the length of the first passage  871 . This is to lower the center of gravity of the balancer. Although not shown in the drawings, the depth of the second passage may be set to be greater than the depth of the first passage. 
     When the drum body  41  is rotated at a high rotational speed (a rotational speed that causes a centrifugal force of 1 G or more), it is preferable that liquid not move along the circulation passage unless vibration of the drum body exceeds a preset reference vibration. This is because, when the liquid moves inside the circulation passage while rotating at the rotational speed in which centrifugal force of 1 G or more is induced in a radial direction of the drum body, vibration according to the movement of the liquid may occur in the drum body  41 . 
     In order to prevent the liquid from moving along the circulation passage while the drum body  41  is rotated at a high speed, the circulation passage  87  may be provided with a plurality of anti-slip walls. 
     As shown in  FIG.  3   , one ends of the anti-slip walls  88  may be fixed to an outer circumferential surface of the circulation passage  87  (a surface facing the circumferential surface of the tub body), and free ends thereof may be provided as boards protruding toward an inner circumferential surface of the circulation passage  87  (a surface facing the center of the drum body). The free ends of the anti-slip walls  88  should be provided so as not to contact the inner circumferential surface of the circulation passage  87 . This is because, when the drum body  41  is rotated at a low speed or when the drum body  41  is rotated eccentrically, the liquid must be able to move along the circulation passage. 
     The anti-slip walls  88  are preferably provided with a plurality of boards spaced apart from each other at the same angle with respect to the center of the housing through-hole  85 . 
       FIG.  5    shows another embodiment of the balancer  8 , and this embodiment is characterized in that the circulation passage  87  is divided into two chambers C 1  and C 2  with a partition wall  89 . In this case, the liquid is stored in a first chamber C 1  and a second chamber C 2 , individually. 
     The partition wall  89  may include a first partition wall  891  provided in the first housing  81  to divide the inside of the first passage  871  into two spaces, and a second partition wall  893  provided in the second housing  83  to divide the inside of the second passage  873  into two spaces. In this case, a free end of the first partition wall  891  and a free end of the second partition wall  893  may be coupled to each other by thermal fusion. 
       FIG.  6    shows another embodiment of the balancer  8 , and a clothing treatment apparatus  100  according to this embodiment is characterized by including a balancer support part  45  protruding from the circumferential surface of the drum body  41  toward the center of the drum body, and a fastening groove  813  formed as a concavely bent groove by the circumferential surface of the first housing  81  to form a space in which the balancer support  45  is accommodated. 
     The fastening groove  813  may be formed in a circumferential surface of the fixed body and a corner of a bottom surface of the fixed body in the space provided by the fixed body  811  to thereby accommodate at least a portion of the balancer support part  45 . 
       FIG.  6    shows an example in which the balancer support part  45  is provided as a protrusion having a semicircular or arc-shaped cross section and the fastening groove  813  is provided to accommodate an area above a horizontal line passing through the center of the balancer support  45  in the area of the balancer support  45 . When the fastening groove  813  is provided in the fixed body  811 , the height of the center of gravity G of the balancer may be further lowered. The circulation passage  87  provided in the embodiment of  FIG.  6    may also be divided into the first chamber C 1  and the second chamber C 2  by the partition wall  89 . 
     A heating part  7  for heating water inside the tub  3  may be further provided at the bottom surface of the tub body  31  to wash clothing with water at a temperature higher than room temperature. 
     As shown in  FIG.  2   , the heating part  7  may be accommodated in a chamber  71  and  73  protruding from the bottom surface of the tub toward the bottom surface of the cabinet. 
     The heating part  7  may include a heater  72  for heating water in the tub, and a chamber drain pipe  75  connected to the chamber  71  and  73 . 
     The chamber  71  and  73  may be formed in the shape of a groove protruding from the bottom surface of the tub body  31  (which is a groove protruding from the bottom surface of the tub body toward the bottom surface of the cabinet, or a groove protruding from the bottom surface of the tub body toward the bottom surface of the drawer body). 
     The bottom surface of the tub body  31  may be inclined toward the chamber  71  and  73  so that water remaining at the bottom of the tub body  31  is able to move to the chamber  71  and  73 . 
     The chamber  71  and  73  may include a heating chamber  71  accommodating the heater  72  therein, and a water collecting chamber  73  protruding from the heating chamber  71  from the bottom surface of the heating chamber  71  toward the bottom surface of the cabinet  1  to store water. 
     As shown in  FIG.  7 ( a ) , the water collecting chamber  73  may be provided as a space for storing water as a bottom surface of the heating chamber  71  protrudes toward the bottom surface of the drawer body  21  or the bottom surface of the cabinet  1 . 
     The chamber drain pipe  75  may be in the form of a pipe passing through a side surface of the water collecting chamber  73 . The chamber drain pipe  75  may be in the form of a pipe passing through a side surface of the water collecting chamber  73 . The chamber drain pipe  75  may be a pipe extending in a direction away from the circumferential surface of the tub body  31  from a side surface of the water collecting chamber  73  (−X-axis direction). 
     Accordingly, the volume of the tub  3  and the drum  2  may be maximized. 
     Meanwhile, unlike the drawings, when the chamber drain pipe  75  is provided at the bottom surface of the water collecting chamber  73 , a first drain pipe  61  fixed to the chamber drain pipe  75  may be located at a bottom surface of the drawer body  21  or in a space between the bottom surface of the cabinet  1  and the chamber drain pipe  75 . 
     In this state, when vibration occurs in the tub body  31  due to rotation of the drum body  41 , the chamber drain pipe  75  and the first drain pipe  61  may be damaged due to friction with the bottom surface of the drawer body  21  or the bottom surface of the cabinet  1 . 
     When the chamber drain pipe  75  is provided at a side surface of the water collecting chamber  73 , it is possible to minimize damage to the chamber drain pipe  75  in the event of vibration of the tub body  31 . That is, as shown in  FIG.  7 ( a ) , when the chamber drain pipe  75  is provided as a pipe extending in a direction away from the center of the tub, the above-described risk may be minimized. 
     The chamber drain pipe  75  may be coupled to one end of the first drain pipe  61 . The chamber drain pipe  75  may be coupled to the first drain pipe  61  in such a way of being inserted into one end of the first drain pipe  61 . 
     One end of the first drain pipe  61  may be fixed to the chamber drain pipe  75 , and the other end thereof may be connected to the drain pump  63 . The drain pump  63  may be fixed to the same position as the chamber drain pipe  75  or at a lower position than that of the chamber drain pipe  75 . 
     Accordingly, when the chamber drain pipe  75  is provided as a pipe extending in a direction away from the center of the tub  3  from a side surface of the chamber  71  and  73 , it is possible to prevent damage to the first drain pipe  61  in the event of vibration of the tub body  31 . 
     The chamber drain pipe  75  may be positioned between the bottom surface of the tub  3  and a lowest point of the driver. The chamber drain pipe  75  may be located between the bottom surface of the tub  3  and a lowest point of the rotor. A height of a lowest point of the chamber drain pipe  75  may be equal to a height of a lowest point of the rotor  473  or may be higher than the height of the lowest point of the rotor  473  (See  FIG.  2   ). 
     Accordingly, it is possible to prevent the chamber drain pipe  75  from being damaged in the event of vibration of the tub body  31 . 
     Meanwhile, as shown in  FIG.  7 ( a ) , the height of the lowest point of the chamber drain pipe  75  may be equal to a height of a lowest point of the water collecting chamber  73  or may be lower than the height of the lowest point of the water collecting chamber  73 . 
     A side and/or bottom surface of the water collecting chamber  73  may be inclined downward toward the chamber drain pipe  75 , and a bottom surface  77  (a first inclined surface) of the heating chamber  71  may be inclined downward toward the water collecting chamber  73 . 
     Accordingly, it is possible to minimize residual water in the heating chamber  71  and the water collecting chamber  73 . 
     The chamber drain pipe  75  may be coupled to one end of the first drain pipe  61  outside a virtual cylinder that extends an outer circumferential surface of the tub body  31 . 
     The chamber drain pipe  75  may have one end coupled to a side surface of the water collecting chamber  73 , and the other end thereof may be a free end. 
     A distance H 1  from a side surface of the water collecting chamber  73  to the free end of the chamber drain pipe  75  may be greater than a distance H 2  from a side surface of the water collecting chamber  73  to the circumferential surface of the tub body  31 . 
     The chamber drain pipe  75  may be coupled to the first drain pipe  61  from an outer circumferential surface of the tub body  31  based on the center of the tub body  31 . 
     Accordingly, a position where the chamber drain pipe  75  and the first drain pipe  61  are coupled may be located outside the outer circumferential surface of the tub, thereby maximizing the volume of the tub  3  and the drum  2 . 
     As shown in  FIGS.  7 ( b )  and  8 , the heating part  7  may further include a guide  76  protruding from the bottom surface of the water collecting chamber  73  to form a passage for guiding water to the chamber drain pipe  75 . 
     As shown in  FIG.  7 ( b ) , a lowest point of the guide  76  (a lowest point in a bottom surface of the guide) may be located at a position lower than a lowest point of the water collecting chamber  73  based on the bottom surface of the cabinet  1  or the bottom surface of the drawer  2 . A lowest point of the chamber drain pipe  75  (a lowest point in a bottom surface of the chamber drain pipe) may be at a height equal to the lowest point of the guide  76  or lower than the lowest point of the guide  76  based on the bottom surface of the cabinet  1  or the bottom surface of the drawer  2 . 
     Accordingly, an amount of residual water in the water collecting chamber  73  may be minimized. 
     A bottom surface of the guide  76  may be inclined downward toward the chamber drain pipe  75 . 
     As shown in  FIG.  9   , a cross-section of the guide  76  may be provided in a semicircular or arc shape. 
     A surface  78  (a side surface of the water collecting chamber) connecting the bottom surface  77  of the heating chamber  71  and the bottom surface of the water collecting chamber  73  may be inclined further toward the chamber drain pipe  75  in a direction from the bottom surface  77  of the heating chamber  71  to the bottom surface of the water collecting chamber  73 . 
     As the lowest point of the chamber drain pipe  75  is closer to the bottom surface of the drawer  2  or the bottom surface of the cabinet  1 , the chamber drain pipe  75  and the first drain pipe  61  may be more likely damaged in the event of vibration of the tub body  31 . In order to increase the height of the lowest point of the chamber drain pipe  75 , a center  751  of the chamber drain pipe  75  may be located at a position higher than the bottom surface of the water collecting chamber  73 . 
     As shown in  FIGS.  1 ,  2 , and  9   , the chamber drain pipe  75  may extend in a direction (−X-axis and +Y-axis directions) that is inclined to a direction in which the drawer  2  is to be withdrawn out from the cabinet  1  (+X-axis direction). The chamber drain pipe  75  may extend from a side surface of the chamber  71  and  73  in a direction away from the center of the tub  3 , and may extend near a corner area where the side surface and the rear surface of the drawer  2  meet. 
     The chamber drain pipe  75  may extend in a direction in which the second bracket  373  protrudes. The chamber drain pipe  75  may extend from a side surface of the chamber  71  and  73  in a direction away from the center of the tub  3 , and in a direction in which the second bracket  373  protrudes from the outer circumferential surface of the tub body  31  toward a side surface and/or rear surface of the drawer body. 
     Accordingly, as the chamber drain pipe  75  extends to or near an edge of the cabinet  1  or drawer  2 , it is possible to minimize a volume of the tub  3  from being reduced by the chamber drain pipe  75  and to maximize the volume of the tub  3  and the drum  2 . 
     A driver mounting groove  311  protruding toward the tub cover  33  may be further provided at the bottom surface of the tub body  31 . 
     As shown in  FIG.  2   , the driver may be located inside the driver mounting groove  311 . The stator  471  and the rotor  473  may be located inside the driver mounting groove  311 . In this case, the lowest point of the chamber drain pipe  75  may be located between the lowest point of the rotor  473  and the bottom surface of the tub body  31 . 
     As shown in  FIG.  2   , the bottom surface of the tub body  31  may include a first bottom surface  312 , a second bottom surface  314 , and an inclined surface  313 . The driver mounting groove  311  may be formed by the first bottom surface  312 , the inclined surface  313 , and the second bottom surface  314 . 
     The first bottom surface  312  may be formed in the center of the tub body  31 . The first bottom surface  312  may be formed in an area within a predetermined distance from the center of the tub body  31 . 
     The second bottom surface  314  may be formed outside the first bottom surface  312  with respect to the center of the tub body  31 . The second bottom surface  314  may be located below the first bottom surface  312 . The second bottom surface  314  may be positioned lower than the first bottom surface  312  with respect to the bottom surface of the cabinet  1  or the bottom surface of the drawer  2 . 
     The inclined surface  313  may be formed to be inclined downward from the first bottom surface  312  to the second bottom surface  314 . 
     The driver may be located below the first bottom surface  312 . The stator  471  and the rotor  473  may be located below the first bottom surface  312 . 
     The chambers  71  and  73  may be spaced apart from the driver and protrude from the second bottom surface  314  toward the bottom surface of the cabinet  1  or the bottom surface of the drawer  2 . 
     Based on the first bottom surface  312 , the second bottom surface  314  and the chambers  71  and  73  are located at a lower position, thereby minimizing a reduction in the volume of the tub  3  so as to secure a space for the installation of the heating part  7  and maximizing the volume of the tub  3  and the drum  2 . 
       FIG.  10    shows a clothing treatment apparatus according to an embodiment of the present disclosure. The heating part  7  shown in  FIGS.  10 ( a ) and ( b )  is different from the embodiment of  FIG.  7    in that the water collecting chamber  73  is not included. 
     The heating part  7  shown in  FIG.  10 ( a )  may include a heating chamber  71  protruding from the bottom surface of the tub body  31  to form a space in which the heater  72  is accommodated, and a chamber drain pipe  75  connected to the heating chamber  71 . 
     The chamber drain pipe  75  may include the chamber drain pipe  75  extending from a side surface of the heating chamber  71  in a direction away from the center of the tub body  31  (−X-axis direction) to discharge the water stored in the heating chamber  71 . 
     Accordingly, it is possible to maximize the volume of the tub  3  and the drum  2 . 
     In this embodiment, the chamber drain pipe  75  may be located between the bottom surface of the tub body  31  and a lowest point of the rotor  473 . A lowest point of the chamber drain pipe  75  may be equal to a lowest point of the heating chamber  71  or may be lower than the lowest point of the heating chamber  71 . The bottom surface  77  of the heating chamber  71  may be formed to be inclined downward toward the chamber drain pipe  75 . 
     Accordingly, it is possible to minimize an amount of residual water in the heating chamber  71 . 
     The chamber drain pipe  75  may be coupled to one end of the first drain pipe  61  outside a virtual cylinder that extends an outer circumferential surface of the tub body  31 . 
     The chamber drain pipe  75  may have one end coupled to a side surface of the heating chamber  71 , and the other end thereof may be a free end. 
     A distance from the side surface of the heating chamber  71  to the free end of the chamber drain pipe  75  may be greater than a distance from the side surface of the heating chamber  71  to the circumferential surface of the tub body  31 . 
     The chamber drain pipe  75  may be coupled to the first drain pipe  61  from an outer circumferential surface of the tub body  31  based on the center of the tub body  31 . 
     Accordingly, a position where the chamber drain pipe  75  and the first drain pipe  61  are coupled may be located outside the outer circumferential surface of the tub, thereby maximizing the volume of the tub  3  and the drum  2 . 
     As shown in  FIG.  10 ( b ) , a guide  76  may be further included at the bottom surface of the heating chamber  71 . The guide  76  is a passage that protrudes from the bottom surface  77  of the heating chamber toward the bottom surface of the cabinet  1  or the bottom surface of the drawer  2  to guide water to the chamber drain pipe  75 . The lowest point of the chamber drain pipe  75  may be equal to the lowest point of the guide  76  or may be lower than the lowest point of the guide  76 . 
     Accordingly, it is possible to minimize an amount of residual water in the heating chamber  71 . 
     The chamber drain pipe  75  may be located between the bottom surface of the tub  3  and the lowest point of the rotor  473 . A height of a lowest point of the chamber drain pipe  75  may be equal to a height of the lowest point of the rotor  473  or may be higher than the height of the lowest point of the rotor  473 . 
     Accordingly, it is possible to prevent the chamber drain pipe  75  from being damaged in the event of vibration of the tub body  31 . 
     Although a case where the heating part  7  and the balancer  8  are applied to the clothing treatment apparatus  100  in which the tub  3  is provided in the drawer  2  withdrawable out from the cabinet  1  has been described, the heating unit  7  and the balancer  8  may be applied to apparatuses other than the drawer-type clothing treatment apparatus. 
     That is, the heating part  7  and the balancer  8  may be applied to a top loading type clothing treatment apparatus that includes a cabinet, a tub fixed through a tub support part inside the cabinet, and a drum rotatably provided in the tub. 
     In addition, the heating part  7  and the balancer  8  may be applied to a clothing treatment apparatus fixed to an upper surface of a washing machine or an upper surface of a dryer. In this case, the drawer  2  provided in the clothing treatment apparatus  100  may be omitted. That is, the cabinet  1  of the clothing treatment apparatus may be fixed to an upper surface of a cabinet (second cabinet) of the washing machine or dryer, the tub  3  may be connected to the inside of the cabinet  1  through the tub support part  37 , and a through hole may be provided in the upper surface of the cabinet  1  to expose the door  39  to the outside of the cabinet  1 . 
     Any or other embodiments of the present disclosure described above are not mutually exclusive or distinct. Certain embodiments or other embodiments of the disclosure described above are not mutually exclusive or distinct from each other. Any or all elements of the embodiments of the disclosure described above may be combined with another or combined with each other in configuration or function. 
     For example, a configuration “A” described in one embodiment of the disclosure and the drawings and a configuration “B” described in another embodiment of the disclosure and the drawings may be combined with each other. Namely, although the combination between the configurations is not directly described, the combination is possible except in the case where it is described that the combination is impossible. 
     More particularly, various variations and modifications are possible in the component parts and/or arrangements of the subject combination arrangement within the scope of the disclosure, the drawings, and the appended claims. More particularly, various variations and modifications are possible in the component parts and/or arrangements of the subject combination arrangement within the scope of the disclosure, the drawings and the appended claims. In addition to variations and modifications in the component parts and/or arrangements, alternative uses will also be apparent to those skilled in the art.