Patent Publication Number: US-2023151529-A1

Title: Clothing treatment apparatus

Description:
BACKGROUND 
     Field of the Invention 
     The present disclosure relates to a clothing treatment apparatus. 
     Related Art 
     In general, a clothing treatment apparatus is a concept including an apparatus for washing clothing (an object to wash, an object to dry), an apparatus for drying clothing, and an apparatus for performing both washing and drying of clothing. 
     Recently, in order to wash and/or dry a large amount of objects at a time, the capacity of a tub and a drum is increasing in a clothing treatment apparatus. 
     If a small amount of object is processed using general clothing treatment apparatus, water and power consumption may be wasted. 
     Accordingly, a clothing treatment apparatus having smaller size and capacity than those of a general clothing treatment apparatus has been developed. 
     Such a relatively small-sized clothing treatment apparatus may be designed to have an equal or similar width and a smaller height compared to the general clothing treatment apparatus, and may be positioned on or underneath the general clothing treatment apparatus. 
     The relatively small-sized clothing treatment apparatus has a limitation in height of a cabinet for convenience of use and a limitation in width similarly to the general clothing treatment apparatus. 
     Due to the limitations in the size of the cabinet, when the capacity of the tub and the drum is too small, a small-sized clothing treatment apparatus may be significantly less effective. 
     SUMMARY 
     The present disclosure aims to solve the above and other problems. 
     Another aspect of the present disclosure provides a clothing treatment apparatus capable of maximizing the volume of the drum. 
     Another aspect of the present disclosure provides a clothing treatment apparatus capable of maximizing the volume of the tub. 
     Another aspect of the present disclosure provides a clothing treatment apparatus capable of maximizing the volume of a tub and a drum positioned inside a cabinet and/or drawer whose width is set to be greater than a height. 
     Another aspect of the present disclosure provides a clothing treatment apparatus capable of easily controlling vibration of a tub and a drum. 
     Another aspect of the present disclosure provides a clothing treatment apparatus capable of 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. 
     According to an aspect of the present disclosure, there is provided a clothing treatment apparatus including: a tub; a drum rotatably disposed in the tub; a balancer; and a chamber formed inside the balancer. 
     The tub may extend in a cylindrical shape. The tub may extend in a cylindrical shape having a diameter greater than a length. 
     The tub may include a tub body extending in a cylindrical shape. The tub body may extend in a cylindrical shape having a diameter greater than a length. The tub body may be opened upward. 
     The tub may include a cover forming an upper surface of the tub, and an extension extending downward from an edge of the cover. The extension may be coupled to an upper portion of the tub body. 
     The drum may extend in a cylindrical shape. The drum may be opened upward. The drum may have a diameter greater than a length (height) thereof. 
     The balancer may be fixed to an upper portion of the drum. The balancer may extend along a circumference of the drum. The balancer may have a ring shape. The balancer may provide a channel communicating with an inner space of the drum. 
     The balancer may reduce eccentricity of the drum. The balancer may reduce vibration of the tub due to rotation of the drum. 
     A liquid may be accommodated in the chamber. Alternatively, a solid may be accommodated in the chamber. 
     The chamber may include a first chamber forming a lower portion of the chamber and a second chamber forming an upper portion of the chamber. 
     A width of the first chamber may be greater than a width of the second chamber. 
     A width of the first chamber and a width of the second chamber may be defined in a radial direction of the drum. 
     The balancer may extend upward past an upper end of the drum. A lower end of the balancer may be positioned below an upper end of the drum. An upper end of the balancer may be positioned above the upper end of the drum. 
     A lower end of the first chamber may be positioned below the upper end of the drum. An upper end of the second chamber may be positioned above the upper end of the drum. 
     The drum may include a rim protruding from an upper end of a circumferential surface of the drum toward a center of rotation of the drum. The rim may extend along the circumference of the drum. The rim may extend in a circumferential direction of the drum. The rim may provide an opening for the drum. 
     The drum may include a support part protruding from an inner circumferential surface of the drum. The support part may extend along the circumference of the drum. The support part may extend in the circumferential direction of the drum. The support part may be spaced downward from the rim. 
     The balancer may include a fixing part inserted between the rim and the support part of the drum. The fixing part may protrude from an outer surface of the balancer facing the inner circumferential surface of the drum. 
     The balancer may further include a fastening groove into which the support part of the drum is to be inserted. The fastening groove may be recessed at a lower end of the fixing part. 
     The chamber may be provided with a bottom surface. The bottom surface of the chamber may be positioned below an upper end of the fastening groove. 
     The balancer may include a first housing forming a lower exterior of the balancer. The first housing may provide the first chamber. The first chamber may be formed inside the first housing. 
     The balancer may include a second housing forming an upper exterior of the balancer. The second housing may provide the second chamber. The second chamber may be formed inside the second housing. 
     An upper end of the first housing and a lower end of the second housing may be connected to each other. The first chamber and the second chamber may be connected. 
     The first housing and the second housing may be coupled by thermal fusion. 
     In a radial direction of the drum, a thickness of the second housing may be greater than a thickness of the first housing. 
     An outer surface of the second housing facing the circumferential surface of the tub may be positioned on an outer side than an outer surface of the first housing. The outer surface of the first housing may be positioned on an inner side in the radial direction of the drum than the outer circumferential surface of the drum. 
     The first and second housings may each include an inner wall providing the channel, and an outer wall spaced apart outward from the inner wall. The chamber may be positioned between inner and outer walls of the first and second housings. 
     A thickness of the inner wall of the first housing may be smaller than a thickness of the inner wall of the second housing. A thickness of the outer wall of the first housing may be smaller than a thickness of the outer wall of the second housing. 
     The inner walls of the first and second housings may include an outer surface facing the center of rotation of the drum, and an inner surface facing the chamber. The outer walls of the first and second housings may include an outer surface facing a circumferential surface of the tub, and an inner surface facing the chamber. 
     The outer surface of the inner wall of the first housing and the outer surface of the inner wall of the second housing may be aligned with each other, or the outer surface of the inner wall of the second housing may be closer to the center of rotation of the drum than the outer surface of the inner wall of the first housing. 
     The inner surface of the inner wall of the first housing and the inner surface of the inner wall of the second housing may be aligned with each other, or the inner surface of the inner wall of the first housing may be closer to at the center of rotation of the drum than the inner surface of the inner wall of the second housing. 
     The inner surface of the outer wall of the first housing and the inner surface of the outer wall of the second housing may be aligned with each other, or the inner surface of the outer wall of the second housing may be closer to the center of rotation of the drum than the inner surface of the outer wall of the first housing. 
     The outer surface of the outer wall of the second housing may be located on an outer side in a radial direction of the drum than the outer surface of the outer wall of the first housing. In the radial direction of the drum, the outer surface of the outer wall of the second housing may be positioned between the outer surface of the outer wall of the first housing and the outer circumferential surface of the drum. 
     The clothing treatment apparatus may further include a cabinet. The tub may be disposed in the cabinet. 
     The clothing treatment apparatus may further include a drawer disposed in the cabinet. The tub may be disposed in the drawer. The cabinet may have an outlet at a front. The drawer may be provided to be withdrawn from the cabinet through the outlet. 
     A clothing treatment apparatus according to an aspect of the present disclosure may include: a tub including a tub body having a cylindrical tub body to provide a space for storing water, and a tub cover forming an upper surface of the tub body; a cylindrical drum body rotatably provided inside the tub to provide a space for storing clothing and having an open upper surface; a first housing provided in a ring shape and fixed to an upper surface of the drum body; a second housing provided in a ring shape and fixed to an upper surface of the first housing; a first passage having a ring shape and formed in such a manner in which an upper surface of the first housing is provided as a groove bent concavely in a direction away from the tub cover to provide a space for storing a liquid; and a second passage coupled to the first passage to form a circulation passage of the liquid and formed in such a manner in which a bottom surface of the second housing is provided as a groove bent concavely toward the tub cover. A width of the first passage may be set to be wider than a width of the second passage. 
     A thickness of the first housing in a radial direction of the drum body may be set to be smaller than a thickness of the second housing in the radial direction of the drum body. 
     A point facing the circumferential surface of the tub body in both side surfaces of a lower end of the second passage and a point facing the circumferential surface of the tub body in both side surfaces of an upper end of the first passage may be connected so as not to form a step, and a point facing the center of the drum body in the both side surfaces of the lower end of the second passage and a point facing the center of the drum body in the both side surfaces of the upper end of the first passage may be connected so as to form a step. 
     point on both sides of the lower end of the second passage facing the circumferential surface of the tub body and a point on both sides of the upper end of the first passage facing the circumferential surface of the tub body are connected to form a step, and both sides of the lower end of the second passage A point facing the center of the drum body and a point facing the center of the drum body among both upper end surfaces of the first passage may be connected so as not to form a step difference. 
     A point on both sides of the lower end of the second passage facing the circumferential surface of the tub body and a point on both sides of the upper end of the first passage facing the circumferential surface of the tub body are connected to form a step, and both sides of the lower end of the second passage A point facing the center of the drum body and a point facing the center of the drum body among both upper end surfaces of the first passage may be connected to form a step difference. 
     A length of the second passage with respect to the height direction of the drum body may be equal to a length of the first passage with respect to the height direction of the drum body or may be set to be greater than the length of the first passage. 
     A height of the first housing may be set to be greater than a height of the second housing, and a center of gravity of the balancer may be set to a point located inside the first passage. 
     A height of the bottom surface of the circulation passage may be set to be lower than a height of an upper end of the drum body. 
     The clothing treatment apparatus may further include a plurality of anti-slip walls protruding from a surface facing the tub body toward a center of rotation of the drum body in an internal space of the circulation passage. 
     The clothing treatment apparatus may further include: a first partition wall provided in the first housing to divide the inside of the first passage into two spaces; and a second partition wall provided in the second housing to divide the inside of the second passage into two spaces and coupled to a free end of the first partition to divide the inside of the circulation passage into a first chamber and a second chamber. 
     The clothing treatment apparatus may further include: a fixed body protruding from a circumferential surface of the first housing to contact the circumferential surface of the drum body and fixing the first housing to the circumferential surface of the drum body; a balancer support part protruding from the circumferential surface of the drum body toward the center of the drum body; and a fastening groove formed at a circumferential surface of the fixed body and a corner of a bottom surface of the fixed body in a space provided by the fixed body, thereby providing a space for accommodating at least a portion of the balancer support part. 
     The balancer support part may have a semicircular or arc-shaped cross-section, and the fastening groove may be provided to accommodate an area above a horizontal line passing through the center of the balancer support part in the area of the balancer support part. 
     The clothing treatment apparatus may further include: a cabinet having an outlet at a front surface; and a drawer provided to be drawn out from the cabinet to provide a space in which the tub is accommodated. 
     A clothing treatment apparatus according to an aspect of the present disclosure may include: a cabinet; a tub having a cylindrical tub body provided inside the cabinet to provide a space for storing water, and a tub cover forming an upper surface of the tub body; a cylindrical drum body rotatably provided inside the tub to provide a space for storing clothing and having an open upper surface; a first housing provided in a ring shape and fixed to an upper surface of the drum body; a second housing provided in a ring shape and fixed to an upper surface of the first housing; a first passage provided in a ring shape and formed in such a manner in which an upper surface of the first housing is provided as a groove bent concavely in a direction away from the tub cover to provide a space for storing a liquid; a second passage coupled to the first passage to form a circulation passage of the liquid and formed in such a manner in which a bottom surface of the second housing is provided in a ring shape with a groove bent concavely toward the tub cover; a second cabinet provided to support a bottom surface of the cabinet; and a second drum provided inside the second cabinet to provide a space for storing clothing. A width of the first passage may be set to be wider than a width of the second passage. 
     A clothing treatment apparatus according to an aspect of the present disclosure may include a tub, a chamber, and a chamber drain pipe connected to the chamber. 
     The chamber may be formed to protrude from a bottom surface of the tub. 
     The chamber drain pipe may extend from a side surface of the chamber in a direction away from the center of the tub. 
     The clothing treatment apparatus may include a cabinet, a tub, a drum, and a driving part. 
     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 driving part may be fixed to the bottom surface of the tub, positioned located outside the tub, and able to 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 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 driving part may be located below the first bottom surface. 
     The chamber may be formed to be spaced apart from the driving part and protrude from the second bottom surface to a bottom surface of the cabinet. 
     A height of a lowest point of the chamber drain pipe may be equal to a height of a lowest point of the driving part or higher than the height of the lowest point of the driving part with respect to the bottom surface of the cabinet. 
     A height of a lowest point of the chamber drain pipe may be equal to a height of a lowest point of the chamber or lower than the height of the lowest point of the driving part with respect to the bottom surface of the cabinet. 
     The height of the lowest point of the chamber drain pipe may be equal to the height of the lowest point of the driving part or higher than the height of the lowest point of the driving part with respect to the bottom surface of the cabinet. 
     According to at least one of the embodiments of the present disclosure, it is possible to provide a clothing treatment apparatus capable of maximizing the volume of a tub. 
     According to at least one of the embodiments of the present disclosure, it is possible to provide a clothing treatment apparatus capable of maximizing the volume of a drum. 
     According to at least one of the embodiments of the present disclosure, it is possible to provide a clothing treatment apparatus capable of maximizing the volume of a tub and a drum positioned inside a 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 provide a clothing treatment apparatus capable of easily controlling vibration of a tub and a drum. 
     According to at least one of the embodiments of the present disclosure, it is possible to provide a clothing treatment apparatus capable of 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. 
     Further scope of applicability of the present disclosure will become apparent from the following detailed description. However, it should be understood that the detailed description and specific embodiments such as preferred embodiments of the present disclosure are given by way of example only, since various changes and modifications within the spirit and scope of the present disclosure can be clearly understood by those skilled in the art. 
    
    
     
       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  to  4    show an example of a balancer. 
         FIGS.  7  to  10    show an example of a heating part and a drain part. 
     
    
    
     DESCRIPTION OF EXEMPLARY EMBODIMENTS 
     Hereinafter, embodiments disclosed herein will be described in detail with reference to the accompanying drawings. Regardless of the reference numerals, the same or similar components are assigned the same reference numerals, and overlapping descriptions thereof will be omitted. 
     The suffixes “module” and “part” for components used in the following description are given or mixed in consideration of only the ease of writing the specification, and do not have distinct meanings or roles by themselves. 
     In addition, in describing the embodiments disclosed in the present specification, if it is determined that detailed descriptions of related known technologies may obscure the gist of the embodiments disclosed in this specification, the detailed description thereof will be omitted. In addition, the accompanying drawings are only for easy understanding of the embodiments disclosed in the present specification, and the technical spirit disclosed in the present specification is not limited by the accompanying drawings, and all changes included in the spirit and scope of the present disclosure, should be understood to include equivalents or substitutes. 
     Terms including ordinal numbers such as first, second, etc. may be used to describe various elements, but the elements are not limited by the terms. The above terms are used only for the purpose of distinguishing one component from another. 
     When a component is referred to as being “connected” or “connected” to another component, it may be directly connected or connected to the other component, but it is understood that other components may exist in between. 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 expression includes the plural expression unless the context clearly dictates otherwise. 
     Referring to  FIG.  1   , in a clothing treatment apparatus  100  according to an embodiment of the present disclosure may include a cabinet  1  having an outlet  111  on a front surface  11  thereof, and a drawer  2  drawable from the cabinet  1  through the outlet  111 . 
     A tub  3  (see  FIG.  2   ) to be described later may be provided inside the drawer to provide a space for storing water. 
     A drum  4  (see  FIG.  2   ) to be described later may be rotatably provided inside the tub. 
     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 . can 
     The drawer body  21  may be provided in a hexahedral shape having an open upper surface. The drawer cover  23  may be fixed to an upper end of the drawer body  23  to form an upper surface of the drawer  2 . 
     The drawer panel  25  may be a means (cabinet door) for opening and closing the outlet  111 . The drawer panel  25  may be a means (handle) for facilitating withdrawal of the drawer body  21  from the cabinet  1  or insertion of the drawer body  21  into the cabinet  1 . 
     A control panel  251  for controlling the operation of the clothing treatment apparatus  100  may be provided at an upper surface of the drawer panel  25 . The control panel  251  may be a means for receiving a control command required for operation of the clothing treatment apparatus from a user. For example, the control panel may be a means (a water supply part, a draining part) for receiving from a user a control command required for operation of a means for supplying or draining water to or from the tub  3 , a means for rotating the drum  4  (driving part), or the like. For example, the control panel  251  may be provided with an input part for allowing the user to input a control command to the clothing processing apparatus, and a display part for notifying the user of confirmation of the control command input through the input part or execution of the control command input by the user. 
     The drawer cover  23  may be provided with an inlet  231  passing through the drawer cover  23  and communicating with the inside of the drawer body  21 . The drawer cover  23  may be provided with a cover through-hole  233  passing through the drawer cover  23  and having a water supply pipe  51  (see  FIG.  2   ), which will be described later, 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) (which means that the length in the width direction of the drawer may be longer than the length in the height direction). 
     Accordingly, the clothing treatment apparatus  100  may be positioned below or above another treatment apparatus capable of washing or drying clothing. 
     Accordingly, it may be easy for a user to access the control panel  251  and the inlet  231 . 
     Referring to  FIG.  2   , the clothing treatment apparatus according to an embodiment of the present disclosure may include a tub  3 . The tub  3  may extend in a cylindrical shape. The tub  3  may have a diameter greater than a length (height) thereof. The tub  3  may provide a space in which water is stored. The tub  3  may be disposed in the drawer  2 . 
     The tub  3  may include a tub body  31  extending in a cylindrical shape having a diameter greater than a length. The tub body  31  may be opened upward. 
     The tub  3  may include a cover  33   a  forming an upper surface of the tub  3 . The tub  3  may include an extension  33   b  extending downward from an edge of the cover  33   a . The extension  33   b  may be coupled to an upper portion of the tub body  31 . A tub cover  33  may be referred to as including the cover  33   a  and the extension  33   b . Hereinafter, the cover  33   a  may be also referred to as a cover body  33   a . Hereinafter, the extension  33   b  may be also referred to as an extension body  33   b.    
     The tub body  31  may be provided in a cylindrical shape with an open upper surface. A width of the drawer body  21  may be set to be greater than a height of the drawer body, and 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 supported 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 the circumferential surface of the tub body  31  toward a side 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 (an upper end) connected to the first bracket  371  and the other end (a 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 connecting portion  378 . The first connecting portion  377  may be provided such that one end is supported by the first bracket  371  and the other end passes through the first bracket through-hole  372  to thereby pass through the first bracket  371 . The second connecting portion  378  may be provided such that one end supports the second bracket  373  and the other end passes through the second bracket through-hole  374  to thereby pass through the second bracket  373 . The support bar  375  may be provided as a bar passing through 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 a 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. Using the elastic body, the clothing treatment apparatus  100  may damp vibration of the tub body  31 . 
     The tub support part  37  having the above-described structure may be provided in a plurality of units, which are spaced apart from each other at the same angle with reference to a vertical line passing through the center of the tub body  21 . 
     The tub cover  33  may include a cover body  33   a  positioned below the inlet  231 . The tub cover  33  may include an extension body  33   b  bent from the circumferential surface of the cover body toward a top of the tub body  31 . 
     Accordingly, it is possible to increase a height and a capacity of the tub  3 . 
     Accordingly, it is possible to increase the height and capacity of the tub  3  without changing the design of an existing tub body  31 . 
     The cover body  33   a  may be provided with a tub inlet  331  and a water supply port  333  for communicating an inner space of the tub body  31  with the outside. The tub inlet  331  may be provided to be opened and closed by a door  39  that is rotatably coupled to the cover body  33   a . The door  39  may be positioned below the inlet  231 . The door  39  may be rotated in a direction to open the tub inlet  331  when the drawer is withdrawn from the cabinet. One end of the water supply pipe  51  to be described later may be fixed to the water supply port  333 . 
     The extension body  33   b  may be fixed to an upper end of the tub body  31 . The extension body  33   b  may be fixed to the upper end of the tub body  31  with a cover fastening portion  35 . 
     The cover fastening part  35  may include a first fastening portion  351  provided at a free end of the extension body  33   b  to provide a space in which the top of the tub body  31  is accommodated, and a second fastening portion  353  provided at the circumferential surface of the tub body  31  and coupled to the first fastening portion  351 . 
     The tub  3  is supplied with water through a water supply part. The water supply part may include the 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 regulating opening and closing of the water supply pipe in accordance with a control signal from a controller. 
     Water stored in the tub  3  may be discharged to the outside of the cabinet  1  through a drain part. The drain part may include a first drain pipe  61  connecting a bottom surface of the tub body  31  and a 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 be rotatably provided inside the tub  3 . The drum  4  may extend in a cylindrical shape. The drum  4  may have a diameter greater than a length (height) thereof. The drum  4  may be opened upward. The drum  4  may provide a space in which clothing are stored. 
     The drum  4  may include a drum body  41  that provides a space in which the clothing are stored. The drum body  41  may be provided in a cylindrical shape with an open upper surface or a cylindrical shape having a through-hole formed 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 a circumferential surface and a bottom surface of the drum body  41 . 
     The above-described drum body  41  is rotated by a driving part. The driving part may be fixed to a bottom surface of the tub  3  from the outside of the tub  3 . 
     The driving part 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 rotational shaft  475  connecting the drum body  41  and the rotor  473  through the bottom surface of the tub body  31 . As shown in the drawings, the rotational shaft  475  may be provided to form a right angle with respect to the inlet  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  may damp vibration generated in the drum body at the event of rotation of the drum body  41 . 
     Referring to  FIG.  3   , the balancer  8  may be fixed to the drum  4 . The balancer  8  may be fixed to an upper portion of the drum  4 . The balancer  8  may extend along a circumference of the drum  4 . The balancer  8  may extend in a circumferential direction of the drum  4 . The balancer  8  may be fixed to an upper portion of the drum body  41  to be rotated integrally with the drum  4 , and may extend along the circumference of the drum  4 . That is, it can be seen that the balancer  8  forms the upper portion of the drum  4 . 
     Accordingly, it is possible to increase a height and a capacity of the drum  4 . 
     Accordingly, it is possible to increase the height and the capacity of the drum  4  without changing the design of an existing drum body  41 . 
     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, and a housing through-hole  85  passing through the housing. The housing through-hole  85  passing through the housing  81  and  83  may mean that the housing  81  and  83  has a ring shape. 
     A circulation passage  87  provided in a ring shape inside the housing to form a movement path of liquid may be included. Liquid may be stored in the circulation passage  87 . Hereinafter, the circulation passage  87  is also referred to as a chamber  87 . 
     Since the housing through-hole  85  is positioned below the tub inlet  331 , clothing fed through the tub inlet  331  moves into the drum body  41  through the housing through-hole  85 . Accordingly, the housing through-hole  85  serves as a drum inlet. Hereinafter, the housing through-hole  85  may be also referred to as a channel  85 . 
     The housing may include a first housing  81  provided in a ring shape, 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. 
     The balancer  8  may further include a fixed body  811  provided at a circumferential surface of the first housing  81  to fix the first housing  81  to the circumferential surface of the drum body  41 . 
     Referring to  FIG.  4   , a lower end of the first housing  81  may be inserted into the drum body  41 , and an upper end of the first housing  81  may be exposed to the outside of the drum body  41 . 
     The fixed body  811  may protrude in a ring shape 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 equal to a diameter of an opening 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 depressed toward a direction away from the cover body  33   a . The second housing  82  may include a ring-shaped second passage  873  in which a bottom surface of the second housing  83  is recessed toward the cover body  33   a . The circulation passage  87  may be formed by connecting the first passage  871  and the second passage  873  to each other. Hereinafter, the first passage  871  may be also referred to as a first chamber  871 . Hereinafter, the second passage  872  may be also referred to as a second chamber  873 . 
     In the balancer  8  having the above-described structure, an amount of liquid moving along the circulation passage may vary according to a volume of the circulation passage  87 . When the same liquid is used, a larger volume of the circulation passage  87  is more advantageous in reducing the eccentricity and vibration of the drum  4 . 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 be increased, thereby bringing the effect of increasing the volume of the drum body  41  (which is the effect of increasing a capacity of treating clothing). 
     Meanwhile, the above-described effect can be expected by increasing the height of the housings  81  and  83  and the volume of the circulation passage, but when a height of the center of gravity G of the balancer  8  is increased, the upper portion of the drum  4  and the upper portion of the tub  3  may vibrate more greatly. 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 means 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 means the upper end of the tub  3  possibly becomes to vibrate more greatly. 
     A width W 1  of the first passage  871  may be wider than a width W 2  of the second passage  873 . Accordingly, it is possible 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. 
     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. For example, as shown in  FIG.  4   , by setting a thickness T 1  of the first housing with respect to a radial direction of the drum body  41  to be smaller than a thickness T 2  of the second housing with respect to the radial direction of the drum body  41 , the width W 2  of the second passage may be designed to be wider than the width W 1  of the first passage. That is, in  FIG.  4   , by setting the thickness T 1  of both side walls of the first housing  81  forming the first passage  871  to be smaller than the thickness T 2  of both side walls of the second housing  83  forming the second passage  873 , the width W 2  of the second passage may be wider than the width W 1  of the first passage. 
     In this case, a point facing the circumferential surface of the tub body  31  in both side surfaces of a lower end of the second passage  83  and a point facing the circumferential surface of the tub body  31  in both side surfaces of an upper end of the first passage  81  may be connected so as not to form a step, and a point facing the center of the drum body  41  in the both side surfaces of the lower end of the second passage  83  and a point facing the center of the drum body in the both side surfaces of the upper end of the first passage  81  may be connected so as to form a step. 
     Or, a point facing the circumferential surface of the tub body in both side surfaces of a lower end of the second passage and a point facing the circumferential surface of the tub body in both side surfaces of an upper end of the first passage may be connected so as not to form a step, and a point facing the center of the drum body in the both side surfaces of the lower end of the second passage and a point facing the center of the drum body in the both side surfaces of the upper end of the first passage may be connected so as to form a step. 
     Or, 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  83  and the both side surfaces of the upper end of the first passage  81  may be connected so as to form a step. 
     A height of a bottom surface B of the circulation passage  87  (a height of a bottom surface of the first passage) may be set to be lower than a height of an upper end of the drum body  41 . Accordingly, it is possible to move the height of the center of gravity G of the balancer downward. 
     In addition, a width of the circulation passage  87  may be set to be shorter than a height of the circulation passage (a length of the circulation passage parallel to a height direction of the drum body). Accordingly, it is possible to increase the volume of the circulation passage  87  without reducing the volume of the drum  4 . 
     As shown in the drawings, the center of gravity G of the balancer may be set to be located inside the first passage  871 . A height of the first housing  81  may be set to be longer than a height of the second housing  83 . 
     Unlike the drawings, a length of the second passage  83  with respect to the height direction of the drum body  41  may be equal to a length of the first passage  41  with respect to the height direction of the drum body  41  or may be set to be greater than the length of the first passage  41 . This is to minimize the design change required for manufacturing the balancer  8  (a change in the structure of a mold for manufacturing the housing and a change in the structure of the drum). 
     When the drum body  41  is rotated at a high rotational speed (a rotational speed causing a centrifugal force of 1G or more), it is preferable that the liquid not move along the circulation passage unless the vibration of the drum body exceeds a preset reference vibration. This is because, if the liquid moves inside the circulation passage while rotating at the rotational speed in which centrifugal force greater than gravity 1G 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 . 
     A plurality of anti-slip walls may be provided in the circulation passage  87 . Accordingly, it is possible to prevent the liquid from moving along the circulation passage while the drum body  41  is rotated at a high speed. 
     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  may not contact the inner circumferential surface of the circulation passage  87 . When the drum body  41  is rotated at a low speed or when the drum body  41  is rotated eccentrically, the liquid may move along the circulation passage. 
     The anti-slip walls  88  may be provided as a plurality of boards spaced apart from each other at the same angle with respect to the center of the housing through-hole  85 . 
     Referring to  FIG.  5   , the circulation passage  87  may be divided into two chambers C 1  and C 2  by a partition wall  89 . The liquid may be stored in an outer chamber C 1  and an inner 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. 
     Referring to  FIG.  6   , the drum  4  may include a balancer support part  45  protruding from the circumferential surface of the drum body  41  toward the center of the drum body. The balancer  8  may include 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 part  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 . 
     The balancer support part  45  may extend along a circumference of the drum  4  and may have a semicircular or arc-shaped cross-section. The fastening groove  813  may be provided to accommodate an area above a horizontal line passing through the center of the balancer support part  45  in the area of the balancer support part  45  When the fastening groove  813  is provided in the fixed body  811 , there is an effect that the height of the center of gravity G of the balancer can be further lowered. The circulation passage  87  shown in  FIG.  6    may also be divided into the outer chamber C 1  and the inner 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. 
     Referring to  FIG.  2   , the heating part  7  may be accommodated in a tub 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 tub chamber  71  and  73 . 
     The tub 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 tub chamber  71  and  73  so that water remaining at the bottom of the tub body  31  is able to move to the tub chamber  71  and  73 . 
     The tub chamber  71  and  73  may include a heating chamber  71  for 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. 
     Referring to  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 a pipe extending from a side surface of the water collecting chamber  73  in a radial direction of the tub body  31 . 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, it is possible to maximize the volume of the tub  3  and the drum  2 . 
     Meanwhile, unlike the drawings, when the chamber drain pipe  75  is provided at the bottom surface of the water collection chamber  73 , the 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 possibly 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  at 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 that of the chamber drain pipe  75  or at a lower position than that of the chamber drain pipe  75 . 
     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  at 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 driving part. 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 damage to the chamber drain pipe  75  at the event of vibration of the tub body  31 . 
     Meanwhile, referring to  FIG.  7 A , the height of the lowest point of the chamber drain pipe  75  may be lower than a height of a 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  at a position further outside than an outer circumferential surface of the tub body  31  with reference to 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 . 
     Referring to  FIGS.  7 ( b )  and  8 , the heating part  7  may further include a guide  76  protruding from a bottom surface of the water collecting chamber  73  to form a passage for guiding water to the chamber drain pipe  75 . 
     Referring to  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  with reference to 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 lower than a lowest point of the guide  76  with reference to the bottom surface of the cabinet  1  or the bottom surface of the drawer  2 . 
     Accordingly, it is possible to minimize an amount of water remaining in the water collection chamber  73 . 
     A bottom surface of the guide  76  may be inclined downward toward the chamber drain pipe  75 . 
     Referring to  FIG.  9   , a cross-section of the guide  76  may be provided in a semicircle 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 at 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 driving part 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 driving part may be located inside the driving part mounting groove  311 . The stator  471  and the rotor  473  may be located inside the driving part 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 driving part 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 on an outer side than 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 driving part 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 driving part and protrude from the second bottom surface  314  toward the bottom surface of the cabinet  1  or the bottom surface of the drawer  2 . 
     With reference to 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 . 
     Referring to  FIG.  10   , the heating part  7  may not include the water collecting chamber  73 . 
     Referring to  FIG.  10  ( a ) , the heating part  7  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 radial direction of the tub body  31  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 . 
     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 lower than a lowest point of the heating chamber  71 . The bottom surface  77  of the heating chamber  71  may 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  at a position further outside than an outer circumferential surface of the tub body  31  with reference to 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 . 
     Referring to  FIG.  10  ( b ) , a guide  76  may be provided at the bottom surface of the heating chamber  71 . The guide  76  may be provided as 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 . A lowest point of the chamber drain pipe  75  may be lower than a lowest point of the guide  76 . 
     Accordingly, it is possible to minimize an amount of water remaining in the heating chamber  71 . 
     The chamber drain pipe  75  may be located between the bottom surface of the tub  3  and a lowest point of the rotor  473 . A height of the 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 damage to the chamber drain pipe  75  at 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 is provided in the drawer  2  withdrawable out from the cabinet  1  has been described, the heating part  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 . 
     Referring to  FIGS.  1  to  10   , a clothing treatment apparatus according to an aspect of the present disclosure includes a tub; a drum extending in a cylindrical shape, capable of being opened upward, and rotatably disposed in the tub, and fixed to an upper portion of the drum; a balancer extending along a circumference of the drum and providing a channel communicating with an inner space of the drum; and a chamber formed inside the balancer and extending along the balancer. The chamber may include a first chamber forming a lower portion of the chamber and a second chamber forming an upper portion of the chamber. A width of the first chamber may be greater than a width of the second chamber. 
     According to another aspect of the present disclosure, the balancer may extend upwardly past an upper end of the drum. 
     According to another aspect of the present disclosure, the drum may further include a rim protruding from an upper end of a circumferential surface of the drum toward a center of rotation of the drum and providing an opening of the drum, and a support part protruding from an inner circumferential surface of the drum and extending along a circumference of the drum. The balancer may further include a fixing part protruding from an outer surface facing the inner circumferential surface of the drum and inserted between the rim and the support part of the drum. 
     According to another aspect of the present disclosure, the balancer may further include a fastening groove recessed from a lower end of the fixing part into which the support part of the drum is to be inserted. 
     According to another aspect of the present disclosure, the chamber may have a bottom surface positioned below an upper end of the fastening groove. 
     According to another aspect of the present disclosure, the balancer may include: a first housing defining a lower exterior of the balancer and providing the first chamber; and a second housing forming an upper exterior of the balancer, providing the second chamber, and fixed to an upper portion of the first housing. 
     According to another aspect of the present disclosure, a thickness of the second housing in a radial direction of the drum may be greater than a thickness of the first housing. 
     According to another aspect of the present disclosure, the balancer may further include a fixing part protruding from an outer surface of the first housing facing an inner circumferential surface of the drum and fixed to the inner circumferential surface of the drum. An outer surface of the second housing facing the circumferential surface of the tub may be positioned on an outer side than an outer surface of the first housing. 
     According to another aspect of the present disclosure, the tub may include: a tub body extending in a cylindrical shape having a diameter greater than a length and able to be opened upward; a cover forming an upper surface of the tub; and an extension extending downward from an edge of the cover and coupled to an upper portion of the tub body. 
     The clothing treatment apparatus according to another aspect of the present disclosure may further include a cabinet having an outlet at the front, and a drawer provided to be withdrawable from the cabinet through the outlet and providing a space for accommodating the tub. 
     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. 
     Although embodiments have been described with reference to a number of illustrative embodiments thereof, it should be understood that numerous other modifications and embodiments can be devised by those skilled in the art that will fall within the scope of the principles of this disclosure. 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.