KR20220031307A - Laundry Treatment Apparatus - Google Patents

Abstract

The present invention relates to a clothes treatment apparatus. The clothes treatment apparatus includes: a drum including a drum body providing a space to store clothes, a front cover forming a front side of the drum body, a rear cover forming a rear side of the drum body, and a drum inlet connected to the inside of the drum body through the front cover; a fixing panel provided on a position spaced apart from the rear cover; a motor including a stator fixed to the fixing panel to form a rotating field, and a rotor rotated by the rotating field; a cylindrical housing fixed to the fixing panel, and having a hollow inside; a ring gear fixed in the housing; a first shaft having one end fixed to the rotor and having the other end located in the housing; a driving gear fixed to the first shaft to be located in the housing; a second shaft having one end fixed to the rear cover through the fixing panel and having the other end located in the housing, and forming a concentric axis with the first shaft; a base located in the housing and fixing the other end of the second shaft; and a driven gear including a first body fixed to the base to be rotatable, a first gear provided on a circumference surface of the first body to be combined with the driving gear, a second body fixed to the first body and having a diameter smaller than the diameter of the first body, and a second gear provided on a circumference surface of the second body to be combined with the ring gear. Therefore, the present invention is capable of minimizing the volume of the driving part.

Description

Laundry Treatment Apparatus

This application relates to a laundry treatment apparatus.

The laundry treatment apparatus is a generic term for a washing machine for washing clothes (objects to be washed or objects to be dried), a dryer for drying clothes, and devices capable of both washing and drying clothes.

The washing machine is provided to include a tub for storing water, a washing drum provided inside the tub to store clothes, and a driving unit (washing driving unit) that rotates the washing drum, and the dryer includes a drying drum for storing clothes, the drying drum It was generally provided to include a driving unit (drying driving unit) that rotates the dryer, and a heat exchanging unit that supplies air to the drying drum to remove moisture from clothes.

The washing driving unit is provided to include a stator fixed to the tub to form a rotating magnetic field, a rotor rotating by the rotating magnetic field, and a rotating shaft passing through the tub to connect the washing drum and the rotor, whereas the drying driving unit includes a motor and a rotating shaft of the motor It was generally provided to include a fixed pulley and a belt (power transmission unit) for connecting the rotational motion of the pulley to the drying drum.

The washing driving unit is provided such that the rotating shaft of the motor connects the washing drum and the rotor. In order to wash or spin clothes, the washing driving unit needs to control the rotational speed of the washing drum to be high or to change the rotational direction of the washing drum. And there is an effect that the rotation direction can be easily controlled.

On the other hand, the conventional drying drive unit generally has a structure in which a power transmission unit such as a belt connects the drying drum and the rotating shaft of the motor. This is because the dryer may rotate the drying drum through a power transmission unit such as a belt because the need to maintain a high rotational speed of the drying drum or to change the rotational direction of the drying drum is low. However, if the number of rotations and the direction of rotation of the drying drum can be changed, the movement of clothes inside the drying drum can be controlled, so that the drying time can also be shortened and the drying performance of the dryer can be expected to be improved.

Some of the conventional washing machines are provided with a driving unit (reducer and motor) for decelerating the rotational speed of the rotor and transmitting it to the drum (Publication No. 10-2004-0071426). In a conventional washing machine equipped with a reducer and a motor, the stator and the reducer of the motor are fixed to the tub, respectively. That is, the stator provided in the conventional washing machine was not directly fixed to the speed reducer but had a structure fixed to the tub (the structure in which the vibration amplitude of the stator and the vibration width of the reducer may be different). The driving unit of the above-described structure had a structure in which it was difficult to maintain concentricity between the input shaft connected to the rotor and the output shaft connected to the drum when the tub and the drum vibrate, and to maintain a gap between the stator and the rotor.

An object of the present application is to provide a laundry treatment apparatus provided with a driving unit that reduces the rotational speed of a rotor and transmits it to a drum, but allows the rotational center of the rotor and the rotational center of the drum to form concentric shafts.

In addition, an object of the present application is to provide a laundry treatment apparatus capable of minimizing the volume of a driving unit.

Another object of the present application is to provide a laundry treatment apparatus capable of minimizing (reducing drying time) that the flow of air supplied to the drum is concentrated in a partial area of the drum.

Another object of the present application is to provide a laundry treatment apparatus provided with a cooling passage for cooling a stator.

The present application relates to a drum body providing a space for storing clothes, a front cover forming a front surface of the drum body, a rear cover forming a rear surface of the drum body, and penetrating the front cover to enter the drum body a drum provided with a communicating drum inlet; a fixed panel provided at a position spaced apart from the rear cover; a cylindrical housing fixed to the fixing panel and having an empty interior; a motor having a stator fixed to at least one of the fixed panel and the housing to form a rotating magnetic field, and a rotor rotating by the rotating magnetic field; a ring gear fixed to the inside of the housing; a first shaft having one end fixed to the rotor and the other end positioned inside the housing; a main gear fixed to the first shaft and positioned inside the housing; a second shaft penetrating through the fixing panel and having one end fixed to the rear cover and the other end positioned inside the housing, and forming a concentric shaft with the first shaft; a base positioned inside the housing and to which the other end of the second shaft is fixed; A first body rotatably fixed to the base, a first gear provided on a circumferential surface of the first body and coupled to the main gear, a first gear fixed to the first body and having a smaller diameter than the diameter of the first body Provided is a laundry treatment apparatus comprising: two bodies; and a driven gear provided on a circumferential surface of the second body and provided with a second gear coupled to the ring gear.

The diameter of the first gear may be set longer than the diameter of the main gear, and the diameter of the second gear may be longer than the diameter of the main gear and set shorter than the diameter of the first gear.

The diameter of the first gear may be set longer than the diameter of the main gear, and the diameter of the second gear may be set to be the same as the diameter of the main gear.

The housing may include a second housing fixed to the fixing panel to rotatably support the second shaft; and a first housing fixed to the second housing and rotatably supporting the first shaft.

A diameter of a circumferential surface of the second housing may be set to be smaller than a diameter of a circumferential surface of the first housing, and the ring gear may be fixed to the circumferential surface of the first housing.

A diameter of a circumferential surface of the second housing may be set to be smaller than a diameter of a circumferential surface of the first housing, and the ring gear may be fixed to the circumferential surface of the second housing.

The stator may include a core fixed to at least one of the fixing panel and the housing, and a core through hole provided to penetrate the core, and at least a portion of the housing may be provided to be located inside the core through hole. can

The laundry treatment apparatus may include: a first shaft support part protruding from the first housing toward the second housing; a first shaft through hole through which the first shaft is inserted through the first shaft support; and a first shaft bearing for rotatably fixing the first shaft to the first shaft support part.

The laundry treatment apparatus may include a connection shaft fixed to the base to form a rotation shaft of the driven gear; a base cover fixed to the connecting shaft to form a space in which the driven gear is accommodated; and a base cover through hole provided to pass through the base cover, wherein the free end of the first shaft support part may be provided to pass through the base cover through hole.

The first shaft bearing may be provided to include a first shaft first bearing and a first shaft second bearing provided along the longitudinal direction of the first shaft.

The laundry treatment apparatus may further include a second shaft bearing for rotatably fixing the second shaft to the second housing.

The second shaft bearing may include a second shaft first bearing and a second shaft second bearing provided along a longitudinal direction of the second shaft.

The laundry treatment apparatus includes: a front panel provided with an inlet and a door for opening and closing the inlet; a support panel positioned between the front panel and the front cover; a support panel through hole provided to pass through the support panel; a drum connecting body connecting the support panel through-hole to the drum inlet; a panel connecting body connecting the support panel through-hole to the inlet; a first exhaust port provided to pass through the panel connection body; a second exhaust port provided to pass through the fixing panel; an exhaust duct connecting the first exhaust port and the second exhaust port; a supply duct for supplying outside air to the drum; and a heat exchange unit for heating the outside air introduced into the supply duct.

The laundry treatment apparatus includes: a front panel provided with an inlet and a door for opening and closing the inlet; a support panel positioned between the front panel and the front cover; a support panel through hole provided to pass through the support panel; a drum connecting body connecting the support panel through-hole to the drum inlet; a panel connecting body connecting the support panel through-hole to the inlet; a first exhaust port provided to pass through the panel connection body; a second exhaust port provided to pass through the fixing panel; an exhaust duct connecting the first exhaust port and the second exhaust port; a heat exchange unit for dehumidifying and heating the air moving along the exhaust duct; a supply port provided to pass through the fixed panel; a supply duct for guiding the air discharged from the second exhaust port to the supply port; an air inlet having a plurality of holes passing through the rear cover arranged in a ring shape; and a flow path forming part provided in a ring shape surrounding the air inlet, fixed to the fixing panel, and guiding air discharged from the supply port to the air inlet.

The laundry treatment apparatus may further include a ring-shaped damper provided at the free end of the drum connecting body or the drum inlet to connect the free end of the drum connecting body and an edge of the drum inlet.

The damper may be provided with felt.

The laundry treatment apparatus includes: a driving unit mounting groove formed by bending the fixing panel to be concavely bent toward the rear panel; a fixing panel through-hole provided in the driving unit mounting groove and through which the second shaft passes; and a driving unit bracket fixed to the driving unit mounting groove and to which the housing and the stator are fixed.

The laundry treatment apparatus may further include a sealing unit provided on the driving unit bracket or the fixed panel to seal the through hole of the fixed panel.

The present application relates to a drum providing a space in which clothes are stored; a fixed panel provided at a position spaced apart from the drum; a housing fixed to the fixing panel and having an empty interior; a motor having a stator fixed to at least one of the fixed panel and the housing to form a rotating magnetic field, and a rotor rotating by the rotating magnetic field; a ring gear fixed to the inside of the housing; a first shaft having one end fixed to the rotor and the other end positioned inside the housing; a main gear fixed to the first shaft and positioned inside the housing; a second shaft passing through the fixing panel, one end fixed to the drum and the other end positioned inside the housing, and forming a concentric shaft with the first shaft; a base positioned inside the housing and to which the other end of the second shaft is fixed; and a driven gear provided on the base to connect the main gear and the ring gear, wherein the driven gear includes: two or more first bodies rotatably fixed to the base; a first gear provided on a circumferential surface of each of the first bodies and coupled to the main gear; a second body protruding from each of the first bodies in a direction in which the rotor is positioned and having a diameter smaller than a diameter of the first body; and a second gear provided on a circumferential surface of each of the second bodies and coupled to the ring gear.

The first gear may be positioned between the base and the ring gear, and the second gear may be positioned between the first gear and one surface of the housing positioned in a direction toward the rotor.

The housing may include a second housing fixed to the fixing panel to rotatably support the second shaft; and a first housing fixed to the second housing to rotatably support the first shaft and to which the ring gear is fixed, wherein the first gear is located in a space formed by the second housing, The second gear may be provided to be positioned in a space formed by the first housing.

A diameter of the first housing may be set to be smaller than a diameter of the second housing.

The stator includes a core fixed to the housing, a core through hole provided to penetrate the core, and a coil provided on a circumferential surface of the core, and at least a portion of the first housing is inserted into the core through hole can be

The laundry treatment apparatus may include: a first shaft support part extending from the first housing toward a space formed between the second gears; a first shaft through hole through which the first shaft is inserted through the first shaft support; and a first shaft bearing provided in the first shaft support part to rotatably fix the first shaft to the first shaft support part.

The first shaft bearing is provided to include a first shaft first bearing and a first shaft second bearing provided along the longitudinal direction of the first shaft, the first shaft first bearing and the first shaft second bearing At least one of them may be provided to be located in a space formed between the second bodies.

The present application relates to a drum providing a space in which clothes are stored; a fixing panel provided at a position spaced apart from the rear surface of the drum; a housing fixed to the fixing panel and having an empty interior; A core fixed to the housing, a core through hole provided to pass through the core to provide a space in which the housing is accommodated, a coil provided on a circumferential surface of the core to form a rotating magnetic field, and rotating by the rotating magnetic field a motor equipped with a rotor; a first shaft having one end fixed to the rotor and the other end positioned inside the housing; a main gear fixed to the first shaft and positioned inside the housing; a ring gear fixed to the housing and positioned inside the housing; a base rotatably provided inside the housing; a second shaft having one end fixed to the rear cover and the other end fixed to the base, and forming a concentric shaft with the first shaft; and a driven gear rotatably provided on the base to connect the main driven gear and the ring gear.

The housing is provided to be positioned inside the core through-hole to rotatably support the first shaft, the first housing having an open surface facing the fixing panel; and a second housing fixed to the fixing panel to rotatably support the second shaft and to which the first housing is fixed.

At least a portion of the second housing may be provided to be located inside the core through hole.

The laundry treatment apparatus may further include a core mounting part provided in the second housing to which the core is fixed.

The core mounting portion may protrude from a circumferential surface of the second housing in a radial direction of the core through hole.

The laundry treatment apparatus may include a core bracket provided on the core; and a core fastening part for fastening the core bracket, the first housing, and the second housing.

The laundry treatment apparatus may include: a first shaft support part protruding from the first housing toward the second housing; a first shaft through hole through which the first shaft is inserted through the first shaft support; and a first shaft bearing rotatably fixing the first shaft to the first shaft support part.

The first shaft bearing may be provided to include a first shaft first bearing and a first shaft second bearing fixed at positions spaced apart from each other along the longitudinal direction of the first shaft.

The laundry treatment apparatus may include a second shaft support provided in the second housing; a second shaft through hole through which the second shaft is inserted through the second shaft support; and a second shaft bearing for rotatably fixing the second shaft to the second shaft support part.

The second shaft bearing may be provided to include a second shaft first bearing and a second shaft second bearing fixed at positions spaced apart from each other along the longitudinal direction of the second shaft.

The laundry treatment apparatus may further include a fixed panel through-hole provided to pass through the fixed panel, and the second shaft support part may protrude from the second housing in a direction to be inserted into the fixed panel through-hole.

The present application has the effect of providing a laundry treatment apparatus provided with a driving unit that reduces the rotational speed of a rotor and transmits the reduced rotational speed to a drum, wherein the rotational center of the rotor and the rotational center of the drum form a concentric shaft.

In addition, the present application has an effect of providing a laundry treatment apparatus capable of minimizing the volume of the driving unit.

In addition, the present application has an effect of providing a laundry treatment apparatus capable of minimizing (reducing drying time) that the flow of air supplied to the drum is concentrated in a partial area of the drum.

In addition, the present application has an effect of providing a laundry treatment apparatus provided with a cooling passage for cooling the stator.

1 and 2 show an example of a laundry treatment apparatus.
3 shows an example of a driving unit.
4, 5, 6, and 9 show embodiments of the power transmission unit.
7 shows an example of the supply unit.
8 shows an example of a cooling flow path.

Hereinafter, an embodiment of the laundry treatment apparatus will be described in detail with reference to the accompanying drawings. The configuration or control method of the apparatus to be described below is only for explaining the embodiment of the laundry treatment apparatus and not for limiting the scope of the present application, and the same reference numbers used throughout the specification indicate the same components .

1 illustrates an example of a laundry treatment apparatus 100, wherein the laundry treatment apparatus 100 is a cabinet 1, which is rotatably provided inside the cabinet to store clothing (objects to be washed or dried). A drum (2) that provides ), and may be provided to include a driving unit (D) for rotating the drum.

The cabinet 1 includes a front panel 11 forming a front surface of the laundry treatment apparatus, and a base panel 17 forming a bottom surface of the laundry treatment apparatus. The front panel 11 is provided with an inlet 111 communicating with the drum 2 , and the inlet 111 may be provided to be closed by the door 113 .

A control panel 115 is provided on the front panel 11, and the control panel 115 includes an input unit 116 for receiving a control command from a user, and a display unit 117 for outputting information such as a control command selectable by the user. ) may be provided. The input unit 116 includes a power supply requesting unit for requesting power supply to the laundry treatment apparatus, a course input unit allowing a user to select a desired course from among a plurality of courses, and an execution request unit requesting the start of the course selected by the user. can be provided.

The drum 2 may be provided in a cylindrical shape with an empty interior. 1 shows a cylindrical drum body 21 in which the front and rear surfaces of the drum 2 are open, a front cover 22 forming a front surface of the drum body 21, and the drum body 21. A case provided with the rear cover 23 forming the rear surface of the is shown as an example. The front cover 22 may be provided with a drum inlet 221 for communicating the inside of the drum body 21 with the outside.

The drum body 21 may further include a lifter 26 . In the lifter 26, a board extending from the front cover 22 toward the rear cover 23 protrudes from the drum body 21 toward the center of rotation of the drum 2 (circle of the drum). It can be provided by protruding from the main surface toward the center of rotation of the drum).

When the clothes treatment apparatus 100 is provided as a device only for drying clothes, the drum 2 has a drum through hole provided to penetrate the drum body 21 in order to communicate the inside of the drum with the outside of the drum. It is free even if it is not available.

The drum 2 may be rotatably fixed to at least one of the body first preventing part 12 and the body second supporting part 15. In FIG. 1, the rear cover 23 is the driving part (D) It is rotatably fixed to the body second support part 15 through the, and the front cover 22 is rotatably connected to the body first support part 12 as an example.

The body first support part 12 may be provided as a support panel 121 fixed to the cabinet 1 and positioned between the front panel 11 and the front cover 22 . 1 illustrates an example in which the support panel 121 is fixed to the base panel 17 and positioned between the front panel 11 and the front cover 22 . In this case, a rear surface (a surface facing the support panel) of the front panel 11 may be fixed to the support panel 121 , and a lower end thereof may be fixed to the base panel 17 .

The support panel 121 includes a support panel through-hole 122, a drum connection body 123 connecting the support panel through-hole 122 and the drum inlet 221, the support panel through-hole 122 and the It may be provided to include a panel connection body 126 that connects the inlet 111 . The support panel through-hole 122 is provided to pass through the support panel 121 and is a means for communicating the inlet 111 and the drum inlet 221 .

The drum connection body 123 may be provided as a pipe fixed to the rear surface of the support panel 121 (a surface facing the drum inlet in the space provided by the support panel). One end of the drum connecting body 123 may be provided to surround the support panel through hole 122 , and a free end of the drum connecting body 123 may be provided to support the front cover 22 . That is, the free end of the drum connection body 123 may be inserted into the drum inlet 221 or may be provided to contact the free end of the front cover 22 forming the drum inlet 221 .

1 illustrates an example in which the free end of the drum connection body 123 comes into contact with the free end of the front cover 22 . In this case, the drum connection body 123 may be provided with a ring-shaped damper 124 (connection damper). The connection damper 124 minimizes the risk of the drum inlet 221 being separated from the drum connection body 123 when the drum 2 rotates or vibrates (the risk of air inside the drum leaking into the cabinet). is a means to

The connection damper 124 may be made of a compressible material (a material whose volume can be increased or decreased by an external force). In this case, the connection damper 124 may be provided to maintain a compressed state between the free end of the drum connection body 123 and the edge (free end of the front cover) of the drum inlet 221 (to be described later). may be provided to maintain a compressed state by a rear support). When the drum 2 vibrates between the support panel 121 and the fixed panel 151 , this is to minimize the separation of the drum inlet 221 from the drum connection body 123 . A felt manufactured by compressing fibers may be an example of the connection damper 124 .

The panel connection body 126 may be provided as a pipe fixed to the front surface of the support panel 121 (a surface facing the front panel in the space provided by the support panel). One end of the panel connecting body 126 may be provided to surround the support panel through hole 122 , and the other end of the panel connecting body 126 may be provided to be connected to the inlet 111 . Accordingly, the clothes supplied to the inlet 111 enter the drum body 21 through the panel connecting body 126 , the support panel through hole 122 , the drum connecting body 123 , and the drum inlet 221 . can move

The body second support part 15 may be provided as a fixing panel 151 fixed to the cabinet 1 so as to be positioned at a point spaced apart from the rear cover 23 . 1 illustrates an example in which the fixing panel 151 is fixed to the base panel 17 to form a rear surface (a rear surface of the cabinet) of the laundry treatment apparatus 100 .

As shown in FIG. 2 , the fixing panel 151 may be provided with a driving part mounting groove 153 providing a space in which the driving part D is mounted. The driving unit mounting groove 153 may be provided as a groove in which the fixing panel 151 is concavely bent toward the rear cover 23 of the drum. The fixed panel 151 is provided with a fixed panel through-hole 155 through which the rotating shaft of the drum 2 passes. The fixed panel through-hole 155 may be located inside the driving unit mounting groove 153 . .

As described above, when the drum 2 is provided with the drum body 21, the front cover 22 fixed to the drum body, and the rear cover 23 fixed to the drum body, the drum body 21 Compared to the structure in which the open front and rear surfaces of the support panel 121 and the fixed panel 151 are rotatably connected to each other, the rigidity of the drum is increased. When the rigidity of the drum is increased, it is possible to minimize the deformation of the drum body 21 when the drum is rotated, which occurs in the space between the drum body and the support panel and the space between the drum body and the fixed panel when the drum body 21 is deformed. It is possible to minimize the problem of clothes getting caught (it is possible to minimize the load on the driving part).

The support panel 121 is provided with a drum exhaust port (first exhaust port, 128) passing through the panel connection body 126, and the fixing panel 151 has a panel exhaust port (second exhaust port, 157) and a supply port ( 158) may be provided.

The supply port 158 may be provided by disposing a plurality of through-holes provided to pass through the fixing panel 151 to surround the driving unit mounting groove 153 (the plurality of through-holes surrounding the driving unit mounting groove) may be provided. may be provided to form a ring).

As shown in FIG. 1 , the supply unit 3 supplies the air discharged to the exhaust duct 31 connecting the first exhaust port 128 and the second exhaust port 157 and the second exhaust port 157 to the It may be provided to include a supply duct 32 guiding to the supply port 158 and a heat exchange unit 34 provided in the exhaust duct to sequentially dehumidify and heat air. A filter 129 for filtering air moving from the drum 2 to the exhaust duct 31 may be provided in the first exhaust port 128 .

The exhaust duct 31 includes a first duct 311 connected to the first exhaust port 128 , a second duct 312 connected to the second exhaust port 157 , and the first duct 311 and the second duct It may be provided to include a third duct 313 connecting the 312 . The third duct 313 may be fixed to the base panel 17 .

The heat exchange unit 34 may be provided with various devices capable of sequentially dehumidifying and heating the air introduced into the exhaust duct 31. In FIG. 1 , the heat exchange unit 34 is a heat pump. ) and a fan 349 are illustrated as an example.

That is, the heat exchange unit 34 of FIG. 1 is a first heat exchanger (heat absorbing unit, 341) that removes moisture from the air introduced into the exhaust duct 31, and is provided inside the exhaust duct 31 and the heat absorbing unit A second heat exchanger (heating unit, 343) that heats the air that has passed through 341, and the air discharged from the drum 2 passes through the heat absorbing unit and the heat generating unit sequentially and then moves to the supply duct (32) and a fan 359 that allows 1 illustrates a case in which the fan 349 is positioned between the heat generating unit 343 and the second duct 312 as an example.

The heat absorbing part 341 and the heat generating part 343 are sequentially arranged along the moving direction of the air, and are connected to each other through a refrigerant pipe 348 forming a circulation path of the refrigerant. The refrigerant moves along the refrigerant pipe 348 by the compressor 345 located outside the exhaust duct 31, and the refrigerant pipe 348 has the heat absorbing part 341 from the heat generating part 343. A pressure regulator 347 for adjusting the pressure of the refrigerant moving to the

The heat absorbing part 341 is a means for cooling the air (evaporating the refrigerant) by transferring heat of the air introduced into the exhaust duct 31 as a refrigerant, and the heat generating part 343 passes through the compressor 345 . It is a means of heating the air (condensing the refrigerant) by transferring the heat of a refrigerant to the air.

As shown in FIG. 2 , the supply duct 32 is fixed to the fixing panel 151 and guides the air discharged through the second exhaust port 157 to the supply port 158 .

When the supply port 158 is provided with a plurality of through-holes arranged in a ring shape, the supply duct 32 is fixed to the fixing panel 151 to provide the second exhaust port 157 and the supply port 158 . It may be provided to include a duct body 321 forming a flow path connecting the ducts, and a rotor accommodating part 322 provided to pass through the duct body 321 . The supply duct 32 provided with the duct body 321 and the rotor accommodating part 322 forms a substantially ring-shaped flow path, and the driving part D fixed to the driving part mounting groove 153 is the rotor accommodating part. It is exposed to the outside of the supply duct 32 by the part 322 .

An air inlet ( 233 ), and the fixing panel 151 may be provided with a flow path forming part 159 for guiding the air discharged from the supply port 158 to the air inlet 233 .

The air inlet 233 may be provided by disposing a plurality of holes passing through the rear cover 23 to form a ring surrounding the center of rotation of the drum 2 . The flow path forming part 159 may be provided with a pipe having one end (one end fixed to the fixed panel) surrounding the supply port 158 and the other end (one end contacting the drum) surrounding the air inlet 233 . . In order to minimize the transmission of vibrations generated when the drum 2 is rotated to the fixed panel 151 , the flow path forming part 159 may be made of a material (eg, rubber) having high elasticity.

The radius of the ring formed by the air inlet 233 may be set to be 1/2 or more of the radius of the rear cover 23 . This is to allow air discharged into the drum through the air inlet 233 to move along the circumferential surface of the drum.

The air inlet 233 is provided as described above, and the supply unit 3 operates when the drum rotates at a rotation speed that induces a centrifugal force of 1G or more (when the clothes rotate in close contact with the circumferential surface of the drum) ) to supply air, the laundry treatment apparatus may shorten the drying time.

Unlike the drawings, the supply unit 3 supplies an exhaust duct connecting the first exhaust port 128 and the second exhaust port 157, and external air (air inside the cabinet or air outside the cabinet) to the drum ( It may be provided to include a supply duct for supplying to 2), and a heat exchange unit for heating the air introduced into the supply duct.

In order to detect the degree of drying of the clothes located inside the drum 2 , the clothes treatment apparatus 100 may further include a sensing unit 13 . The sensing unit 13 may be provided to measure the degree of dryness through electrical resistance measured when clothing is in contact, or may be provided to measure the degree of dryness by measuring the temperature of the air discharged from the drum 2 . Also, it may be provided to measure the degree of dryness by measuring the temperature of the refrigerant circulating along the refrigerant pipe 348 .

2 illustrates a case in which the sensing unit 13 is provided to measure the electrical resistance of clothes as an example. The sensing unit 13 shown in FIG. 2 may be provided with a first electrode 131 and a second electrode 133 fixed to the support panel 121 . The first electrode 131 and the second electrode 133 should be fixed to the support panel 121 to maintain a spaced apart state from each other. The first electrode 131 and the second electrode 133 may be fixed to a space located below a horizontal line passing through the center of the inlet 111 among the spaces provided by the support panel 121 . In this case, when the two electrodes 131 and 133 are positioned below the horizontal line passing through the center of rotation of the drum 2 (when the clothes are positioned at the lowest point of the drum), the two electrodes 131 and 133 will be able to easily contact the clothes.

As the drying level of the clothes increases, the amount of moisture remaining in the clothes will decrease. Therefore, as the drying level increases, the magnitude of the current sensed by the sensing unit 13 will decrease. Accordingly, the control unit (not shown) may estimate the dryness of the clothes by monitoring the magnitude of the current transmitted from the sensing unit.

When the drying degree of the clothes is low, the temperature of the air discharged from the drum 2 is low, and the higher the drying level, the higher the temperature of the air discharged from the drum. Accordingly, the sensing unit 13 may be provided to sense the temperature of the air discharged from the drum. As shown in FIG. 1 , the sensing unit 13 may be provided as a temperature sensor 135 (air temperature sensing sensor) provided in the exhaust duct 31 .

Since the temperature of the refrigerant circulating through the refrigerant pipe also varies according to the dryness of the clothes, the sensing unit 13 detects the temperature of the refrigerant moving along the refrigerant pipe (the temperature of the refrigerant moving from the heat absorbing unit to the compressor, or heat generated by the compressor) It may be provided as a temperature sensor for measuring the temperature of the refrigerant moving to the part). 1 shows an example in which the sensing unit 13 is provided as a temperature sensor 137 (refrigerant temperature sensing sensor) for sensing the temperature of the refrigerant moving from the compressor 345 to the heat generating unit 343. will be.

The sensing unit 13 includes two electrodes 131 and 133 for measuring the electrical resistance of clothes, a temperature sensor 135 for measuring the temperature of air discharged from the drum, and a temperature sensor 137 for measuring the temperature of the refrigerant. It may be provided to include at least two or more of them.

The driving unit D includes a motor 5 located in the driving unit mounting groove 153 and a power transmission unit fixed to the fixing panel 151 to transmit power generated by the motor to the drum 2 ( 6) may be provided to include.

In order to minimize deformation of the fixing panel 151 by the weight of the driving unit D and external force generated during operation of the driving unit D, the driving unit mounting groove 153 has the motor 5 and the power A drive unit bracket 4 providing a space to which at least one of the transmission units 6 is fixed may be provided. That is, the power transmission unit 6 may be fixed to the driving unit bracket 4 , and the motor 5 may be fixed to at least one of the power transmission unit 6 and the driving unit bracket 4 . The driving unit bracket 4 may be made of a ring-shaped metal (metal having a strength greater than that of the fixing panel) fixed to the driving unit mounting groove 153 .

As shown in FIG. 3 , the motor 5 is provided to include a stator 51 that forms a rotating magnetic field, and a rotor 52 that rotates by the rotating magnetic field.

The stator 51 includes a core 511 fixed to the driving unit bracket 4 or the power transmission unit 6 , a core through hole 512 provided to penetrate the core, and a circle of the core 511 . It may be provided to include electromagnets 513 (coils) arranged at equal intervals on the main surface.

The rotor 52 includes a disk-shaped rotor body 52a, a pipe-shaped rotor circumferential surface 52b fixed to the rotor body, and a plurality of permanent magnets 525 fixed to the rotor circumferential surface. provided to include. The permanent magnets 525 are fixed to the rotor circumferential surface 52b so that N poles and S poles are alternately exposed.

The power transmission unit 6 is provided in a cylindrical shape with an empty inside and includes a housing 61 fixed to the fixing panel 151, a ring gear 62 fixed to the inside of the housing, and one end of the rotor body ( 52a) and the other end is a first shaft 63 (input shaft) positioned inside the housing 61, a main driving gear 631 fixed to the first shaft 63 and positioned inside the housing 61; A driven gear 677 connecting the main gear 631 and the ring gear 62, a cage 67 rotating inside the housing 61 by the driven gear, and one end of the rear cover 23 It is fixed and the other end may be provided to include a second shaft 65 (output shaft) fixed to the cage 67 .

In order to minimize the risk of deformation of the rotor body 52a by the first shaft 63 , the first shaft 63 may be fixed to the rotor body 52a through a fixing plate 524 .

Preferably, the second shaft 65 is provided to form a concentric axis with the first shaft 63 . If the second shaft 65 and the first shaft 63 are provided to form concentric shafts, it will be possible to minimize the vibration generated in the power transmission unit 6 when the drum 2 rotates.

Preferably, the housing 61 is fixed to the fixing panel 151 through the driving unit bracket 4 and positioned in the core through-hole 512 . This is to minimize the volume of the driving part D by locating the housing 61 inside the core through hole 512 .

The housing 61 is provided with a first cylindrical housing 61a having an open surface facing the fixing panel 151 and a cylindrical shape having an open surface facing the first housing, and is coupled to the first housing 61a. Thus, it may be provided to include a second housing 61b that closes the open surface of the first housing.

A first shaft support part 611 and a first shaft through hole 612 penetrating the first shaft support part 611 may be provided in the first housing 61a. The first shaft 63 passes through the first housing 61a by being inserted into the first shaft through hole 612 , and the first shaft 63 is attached to the first shaft support part 611 . A first shaft bearing 613 rotatably fixed to the first housing 61a may be provided.

As shown in FIG. 4 , the first shaft support part 611 may be provided as a pipe protruding from the first housing 61a toward the rotor body 52a, and in the first housing 61a It may be provided as a pipe protruding toward the second housing 61b.

When the first shaft support part 611 is provided as a pipe protruding from the first housing 61a toward the second housing 61b (a pipe protruding from the first housing toward the center of the housing), the housing ( 61) has an effect that can minimize the volume (minimization of the volume of the driving part, the effect that can minimize the volume of the clothes treatment apparatus).

A second shaft support part 616 and a second shaft through hole 617 penetrating the second shaft support part 616 may be provided in the second housing 61b. The second shaft 65 passes through the second housing 61b through the second shaft through hole 617 , and the second shaft 65 is connected to the second shaft support part 616 . A second shaft bearing 618 rotatably fixed to the housing 61b may be provided.

The second shaft support part 616 may be provided as a pipe (a pipe protruding toward the rear cover of the drum) protruding from the second housing 61b toward the fixing panel through-hole 155 .

The first shaft bearing 613 includes a first shaft first bearing 613a and a first shaft second bearing 613b provided along the longitudinal direction of the first shaft 63, and the second shaft The bearing 618 may be provided to include a second shaft first bearing 618a and a second shaft second bearing 618b provided along the longitudinal direction of the second shaft 65 .

When the first shaft bearing and the second shaft bearing are provided with two or more bearings 613a, 613b, 618a, 618b, respectively, when the rotor 52 rotates, the first shaft 63 and the second shaft ( 65) has an effect that can minimize the eccentricity (vibration generated in the driving part can be minimized).

Since the plurality of bearings must be disposed along the rotational axis, the volume of the driving unit D provided with the plurality of bearings is inevitably increased. Therefore, it is not easy to design a plurality of bearings to support the rotation shaft in the laundry treatment apparatus 100 having the cabinet 1 having a limited volume. However, in the above-described laundry treatment apparatus 100 , the driving unit has a structure in which the housing 61 is located in a core through hole of a stator and a pipe structure in which the first shaft support part 611 protrudes toward the center of the housing. It is possible to minimize the volume of , and through this, it is possible to increase the number of bearings 613 and 618 .

In order to minimize the volume of the housing 61 , the diameter of the first housing 61a and the diameter of the second housing 61b may be set differently. That is, the diameter of the first housing 61a may be set smaller than the diameter of the second housing 61b, or may be set longer than the diameter of the second housing 61b.

The ring gear 62 is provided along a ring gear body, a ring gear body through hole provided to penetrate the ring gear body, and an inner circumferential surface (a circumferential surface forming a ring gear body through hole) of the ring gear body. It may be provided to include a set of gear teeth (gear teeth).

The ring gear 62 may be fixed to a housing having a smaller diameter among the first housing 61a and the second housing 61b. As shown in the drawing, when the diameter of the first housing 61a is set to be smaller than the diameter of the second housing 61b, the ring gear 62 is fixed to the circumferential surface of the first housing 61a. can be

As shown in FIG. 3 , the cage 67 includes a base 671 positioned inside the housing 61 and a connecting shaft 675 rotatably fixing the driven gear 677 to the base 671 . ), and a ring-shaped base cover 673 fixed to one end of the connecting shaft 675 may be provided.

The second shaft 65 may be inserted into the fixing panel through-hole 155 to connect the base 671 and the rear cover 23 of the drum. In order to prevent damage to the rear cover 23 due to the rotation of the second shaft 65, the rear cover 23 is provided with a shaft bracket 651 to which one end of the second shaft 65 is fixed. can be

2, in order to minimize the increase in the volume of the drum by the shaft bracket 651, the rear cover 23 has a shaft bracket mounting groove 231 in which the shaft bracket 651 is fixed. This may be provided. The shaft bracket mounting groove 231 may be provided as a groove in which the rear cover 23 is bent in a direction away from the fixing panel 151 . Preferably, the shaft bracket mounting groove 231 is provided at the same position as the driving part mounting groove 153 , and the diameter of the shaft bracket mounting groove 231 is set to be larger than the diameter of the driving part mounting groove 153 . Do. This is to minimize the risk that the rear cover 23 collides with the driving unit mounting groove 153 when the drum 2 rotates.

The driven gear 677 may be provided with a plurality of gears spaced apart from each other at the same angle. In FIG. 3, the driven gear 677 and the connecting shaft 675 are provided with three gears and shafts spaced apart by 120 degrees. The case is shown as an example.

Each driven gear 677 is provided on the circumferential surface of the first body 677a rotatably fixed to the base 671 through the connecting shaft 675, the first body 677a, and the main driven gear ( The first gear 677b coupled to 631), the second body 677c fixed to the first body 677a and having a diameter smaller than the diameter of the first body, and the circle of the second body 677c It is provided on the main surface and may be provided to include a second gear 677d coupled to the ring gear 62 .

4, the main gear 631 fixed to the free end of the first shaft 63 is located in a space formed between the driven gears so as to be connected to each of the first gears 677b. can do. In addition, the free end of the first shaft support part 611 may be inserted into the base cover through hole 674 formed in the center of the base cover 673 to pass through the base cover 673 . Such a structure (the structure of the first shaft support part and the base cover) is a feature of minimizing the volume of the housing (minimizing the volume of the driving part).

In order to seal the fixing panel through-hole 155 (to prevent the air supplied to the drum from leaking to the outside of the cabinet), the driving unit bracket 4 or the fixing panel 151 has a sealing part 41 may be further provided. When the driving unit bracket 4 is provided in a ring shape surrounding the fixing panel through-hole 155 and the housing 61 is fixed to the driving unit bracket 4 so as to be located in the core through-hole 512, The sealing part 41 may be provided to seal a space formed between the driving part bracket 4 and the second housing 61b.

The driving unit D shown in FIG. 5 has the same structure as the driving unit D shown in FIG. 4 except that the stator 51 is fixed to the housing 61 . That is, in the driving unit D of FIG. 4 , the stator 51 is fixed to the fixing panel 151 through the driving unit bracket 4 , whereas in the driving unit D of FIG. 5 , the stator 51 transmits power. A case in which it is fixed to the fixing panel 151 through the negative housing 61 is illustrated.

As shown in FIG. 3 , when the stator 51 is fixed to the housing 61 , a core bracket 515 is provided on the core 511 , and a core mounting part 619 is provided on the housing 61 . may be provided. The core 511 may be fixed to the housing 61 through a core coupling part 517 for fixing the core bracket 515 to the core mounting part 619 . The core mounting part 619 may be provided as a protrusion protruding in a direction away from the circumferential surface of the second housing 61b along the radial direction of the second housing 61b.

The operation process of the driving unit D having the above-described structure is as follows. 6, when the rotor 52 rotates clockwise, the first shaft 63 and the main gear 631 will also rotate clockwise.

When the main gear 631 rotates clockwise, the driven gears 677 will be rotated counterclockwise by the first gear 677b. When the first gear 677b rotates counterclockwise, the second gear 677d also rotates counterclockwise. Since the ring gear 62 is fixed to the fixing panel 15, when the second gear 677d rotates counterclockwise, the base 671 and the second shaft 65 rotate clockwise. will do Since the drum 2 and the base 671 are connected through the second shaft 65 , the drum 2 will rotate in the same direction as the rotor 52 .

When the stator 51 is fixed to the housing 1, there is an advantageous effect in maintaining the concentricity of the first shaft 63 and the second shaft 65 and the distance between the stator and the rotor. It is assumed that the stator 51 is fixed to the fixing panel 151 instead of the housing 61 . In this case, the vibration of the drum and the vibration of the fixing panel 151 will be transmitted to the second shaft 65 , and the vibration of the fixing panel 151 will be transmitted to the first shaft 63 . This means that the vibration amplitude of the drum 2 and the vibration amplitude of the fixed panel 151 may be different, and in some cases, the spacing and concentricity of the first axis and the second axis, and the coil 513 of the stator. A situation may occur in which it is difficult to maintain the distance between the permanent magnets 525 of the rotor and the rotor at a desired level. However, if the stator 51 is fixed to the housing 61, since vibrations transmitted from the outside to the first and second shafts become the same, the above-described problem can be solved.

As shown in the drawing, the diameter of the first gear 677b is set longer than the diameter of the main gear 631, and the diameter of the second gear 677d is longer than the diameter of the main gear 631. It may be set shorter than the diameter of the first gear 677b. Although not shown in the drawings, the diameter of the second gear 677d may be set to be the same as the diameter of the main gear 631 .

When the first gear, the second gear, and the main driving gear are provided as described above, the driving unit D may rotate the drum 2 at a rotation speed lower than the rotation speed of the rotor 52 . That is, the driving unit D may also serve as a speed reducer.

As described above, the rear cover 23 of the drum is provided with a plurality of through-holes 158a and 158b arranged in a ring shape. As shown in FIG. 7 , the clothes treatment apparatus 100 may further include a flow path guide 324 for uniformly supplying the air discharged from the second exhaust port 157 to the through holes.

Since air moves toward a direction with a smaller flow resistance, in the case of the laundry treatment apparatus 100 not provided with the flow guide 324 , the air introduced into the duct body 321 through the second exhaust port 157 is The amount of moving the inside of the duct body 321 along the direction and the amount of moving the inside of the duct body 321 along the counterclockwise direction tend to be different from each other. For example, if the amount of air moving inside the duct body 321 along the clockwise direction is greater than the amount of air moving inside the duct body 321 along the counterclockwise direction, the penetration located on the left side of the reference line L A large amount of air is supplied to the holes 158a, but a small amount of air is supplied to the through holes 158b located on the right side of the reference line L.

The above-described imbalance in the air supply amount may cause an imbalance in the amount of air supplied to the clothes in the drum 2 . That is, a phenomenon in which the amount of supplied air varies depending on the location of the clothes may cause a problem in that the drying time increases, and some clothes become overdried and some clothes become undried.

The flow guide 324 of FIG. 7 maintains the same or similar amount of air moving inside the duct body 321 along the clockwise direction and the amount of air moving inside the duct body along the counterclockwise direction. One problem can be solved.

The flow guide 324 has a first inclined surface guiding a portion of the air discharged from the second exhaust port 157 to the left of the reference line L, and the remainder of the air discharged from the second exhaust port 157 is the reference line ( It may be provided in a shape including a second inclined surface guiding to the right of L). Accordingly, some of the air introduced into the duct body 321 by the flow guide 324 moves to the through holes 158a located on the left side of the reference line L, and the rest of the air flows into the reference line L. will move to the through-holes 158b located on the right side of the

The reference line L may be set as a straight line passing through the center of the rotor receiving part 322 and the center of the second exhaust port 157 . Unlike the drawings, the reference line L may be set as a straight line passing through a point inside the rotor accommodating part 322 and a point inside the second exhaust port 157 .

Furthermore, the supply duct 32 may further include a protruding wall 323 dividing the inside of the duct body 321 into two spaces. The protrusion wall 323 may be provided as a protrusion protruding from the duct body 321 toward the fixing panel 151 or from the fixing panel 151 toward the duct body 321 . 7 illustrates a case in which the protruding wall 323 protrudes from the duct body 321 toward the fixing panel 151 .

The free end of the protruding wall 323 may be provided to contact the fixed panel 151 or may be provided not to contact the fixed panel 151 . 7 illustrates a case in which the free end of the protruding wall 323 and the fixing panel 151 do not contact each other.

The protrusion wall 323 is provided at a position to make the number of through holes 158a located on the left side of the reference line L equal to the number of through holes 158b located on the right side of the reference line L This is preferable. If the reference line L is provided to bisect the number of through holes, the protrusion wall 323 may be provided to be positioned on the reference line L.

In the laundry treatment apparatus 100 having the above-described structure, since the duct body 321 surrounds the motor 5 (because the motor is located inside the rotor accommodating part), the motor 5 may be overheated. There is a possibility.

In order to effectively cool the motor 5 (to cool the stator), the clothes treatment apparatus 100 may further include a cooling passage 35 . As shown in FIG. 8 , the cooling flow path 35 is fixed to the duct body 321 and is provided on the duct cover 355 and the duct body 321 to close the rotor accommodating part 322 . A supply passage 351 for supplying external air to the rotor accommodating part 322, and provided in the duct body 321 to guide the air inside the rotor accommodating part 322 to the outside of the rotor accommodating part 322 It may be provided to include an exhaust passage 353 .

The supply passage 351 and the exhaust passage 353 may be provided as grooves in which an upper surface of the duct body 321 is concavely bent. When the exhaust passage 353 is provided as a groove bent toward the fixing panel 151 on the upper surface of the duct body 321 , the protruding wall 323 is formed to form the exhaust passage 353 . It may be formed by a portion of the duct body 321 protruding to the fixing panel 151 .

When the rotor 52 rotates, outside air flows into the rotor accommodating part 322 through the supply passage 351 , and the air inside the rotor accommodating part 322 receives the rotor through the exhaust passage 353 . will be discharged to the outside of the portion 322 .

In order to make it easier for the air introduced into the supply passage 351 to be discharged through the exhaust passage 353 (for effective cooling of the motor), the rotor 52 has more vanes 523 (vanes). can be provided. The vane 523 may be provided as a board protruding from the rotor body 52a toward the duct cover 355 .

The vane 523 may be provided as a single plate or as a plurality of plates. In either case, the vanes 523 are preferably provided parallel to the radial direction of the rotor body 52a. This is because, if the vanes 523 are provided as a plate parallel to the radial direction of the rotor body, it will be possible to perform the function of an impeller for forcibly moving air.

The rotor 52 further includes a rotor through-hole 521 provided to pass through the rotor body 52a so that heat generated from the stator 51 can be more effectively discharged to the rotor accommodating part 322 . can do. The rotor through-hole 521 may be provided by disposing a plurality of holes to form a ring surrounding the first shaft 63 .

The rotor through-hole 521 may be provided as a slit in which a length in a radial direction of the rotor body 52a is set longer than a length in a circumferential direction of the rotor body 52a. In this case, the vane 523 may be fixed to the edge of the rotor through-hole 521 parallel to the radial direction of the rotor body 52a.

In order to facilitate discharging the heat generated from the stator 51 to the rotor accommodating part 322 , a guide flow path 357 may be further provided in the driving part mounting groove 153 . The guide passage 357 is a means for guiding the air inside the driving unit mounting groove 153 to the exhaust passage 353 .

In order to more effectively cool the motor 5 , the supply passage 351 , the rotation center of the rotor 52 , and the exhaust passage 353 may be arranged on a single straight line. 7 illustrates an example in which the supply passage 351, the rotation center of the rotor 52, the guide passage 357, and the exhaust passage 353 are disposed on the reference line L. .

The power transmission unit 6 shown in FIGS. 4 and 5 has a structure in which the kinetic energy of the rotor 52 sequentially moves from the direction in which the rotor 52 is located to the direction in which the drum 2 is located. (Structure in which kinetic energy is transmitted in a forward direction), the kinetic energy of the rotor 52 moves from the direction in which the rotor 52 is located to the direction in which the drum 2 is located. and a moving structure (a structure including a process in which kinetic energy is transferred in the reverse direction) may be provided.

9 (a) shows an example of a power transmission unit having a structure in which the kinetic energy of the rotor is transmitted in the forward direction, and FIG. 9 (b) is a power transmission unit in which the kinetic energy of the rotor is transmitted in the forward, reverse, and forward directions An example is shown.

The driven gear 677 of FIG. 9 (a) is provided on the circumferential surface of the first body 677a rotatably fixed to the base 671 and the first body 677a to the main driven gear 631. The coupled first gear 677b, the second body 677c protruding from the first body 677a toward the direction in which the drum 2 is positioned, and the ring provided on the circumferential surface of the second body It is provided to include the second gear 677c coupled to the gear 62 . In this case, the first gear 677b is positioned between the first housing 61a and the ring gear 62, and the second gear 677d is the first gear 677b and the second housing ( 61b). In the drawings, as an example, the first gear 677b is positioned in a space provided by the first housing 61a, and the second gear 677d is positioned in a space provided by the second housing 61b. it will be shown

In the power transmission unit of FIG. 9 (a), the kinetic energy of the rotor 52 is transferred to the kinetic energy of the main driving gear 631 by the first shaft 63, and the kinetic energy of the main driving gear 631 is The first gear 677b and the second gear 677d are transmitted, and the kinetic energy of the second gear 677d is transmitted to the base 671 and the second shaft 65 . Since the movement of kinetic energy as described above is sequential from the rotor 52 toward the drum 2, FIG. 9 (a) may be defined as a forward power transmission structure.

Contrary to this, the driven gear 677 of FIG. 9 (b) is provided on the circumferential surface of the first body 677a rotatably fixed to the base 671, and the first body 677a, and the main driven gear ( A first gear 677b coupled to 631), a second body 677c protruding from the first body 677a toward a direction in which the rotor 52 is positioned, and provided on the circumferential surface of the second body and is provided to include a second gear 677c coupled to the ring gear 62 . In this case, the first gear 677b is positioned between the base 671 and the ring gear 62, and the second gear 677d is the first gear 677b and the first housing 61a. It may be located between one side of The drawing shows an example in which the first gear 677b is positioned in a space provided by the second housing 61b, and the second gear 677d is positioned in a space provided by the first housing 61a. did it

In the power transmission unit of FIG. 9 (b), the kinetic energy of the rotor 52 is transferred to the kinetic energy of the main driving gear 631 by the first shaft 63, and the kinetic energy of the main driving gear 631 is It is transmitted to the first gear 677b (forward transmission of kinetic energy). The kinetic energy of the first gear 677b is transmitted to the second gear 677d, and the second gear 677d is provided in the direction in which the rotor is positioned, not in the direction in which the drum is positioned. Accordingly, the kinetic energy of the first gear 677b is transferred in the reverse direction. Thereafter, the kinetic energy of the second gear 677d is transferred to the second shaft 65 through the base 671 , and the base 671 includes the first gear 677b and the second housing 61b. ), the kinetic energy of the second gear 677d is transferred to the second shaft 65 along the forward direction.

While the power transmission unit of FIG. 9 (a) is provided as a cylinder in which the second body 677c protrudes from the first body 677a toward the second housing 61b, the power transmission unit of FIG. 9 (b) The second body 677c is provided as a cylinder protruding from the first body toward the first housing 61a. Therefore, the driven gears 677 of FIG. 9 (b) can form a space into which the free end of the first shaft support part 611 is inserted between the second gears 677d, The volume of the power transmission unit 6 may be set smaller than the volume of the power transmission unit of FIG. 9 ( a ).

Furthermore, in the case of FIG. 9(b), at least one of the plurality of bearings 613a and 613b constituting the first shaft bearing 613 is positioned in the space formed by the second gears 677d. If provided in the first shaft through-hole 612, it will be possible to further reduce the volume of the power transmission unit (6).

Meanwhile, in order to minimize the volume of the driving unit D, in the power transmission unit 6 provided in FIGS. 9 (a) and 9 (b), at least a partial region of the first housing 61a penetrates the core. It may be provided to be inserted into the hole 512 .

As shown in FIG. 1 , in the laundry treatment apparatus 100 having the above structure, the rear cover 23 of the drum maintains a state coupled to the fixing panel 15 through the driving unit D, but the The front cover 22 of the drum maintains a state in contact with the drum connection body 123 of the support panel through the connection damper 124 . Accordingly, when the drum 2 moves to the rear (X-axis direction) of the laundry treatment apparatus due to vibration, there is a possibility that the front cover 22 may be separated from the drum connection body 123 .

When the front cover 22 is separated from the drum connection body 123, the drum inlet 221 will be separated from the support panel through-hole 122 (air supplied to the drum leaks to the outside of the drum), This causes problems such as waste of energy, increase in drying time, and decrease in drying efficiency.

Also, when the front cover 22 is separated from the drum connection body 123, clothes may be caught in the space between the front cover and the drum connection body, which may cause a large load on the motor.

In order to solve the above problem, the laundry treatment apparatus 100 has at least one of the front support parts 7 and 8 supporting the front cover 22 and the rear support part 9 supporting the rear cover 23 . It may be provided to further include any one. 1 illustrates an example of the laundry treatment apparatus 100 provided with both the front support parts 7 and 8 and the rear support part 9 .

The front support parts 7 and 8 are provided to minimize movement of the front cover 22 in a height direction (Z-axis direction) of the support panel 121 and a width direction (Y-axis direction) of the support panel, and , the rear support part 9 may be provided to minimize movement of the front cover 22 in a direction away from the support panel 121 (X-axis direction and -Z-axis direction).

As shown in FIG. 2, the front support part is a front first support part (7) for supporting an area located below a horizontal line (H) passing through the center of rotation of the drum among the circumferential surfaces of the front cover (22). , it may be provided to include a front second support portion 8 for supporting a region located above the horizontal line (H) of the circumferential surface of the front cover (22). The front first support part 7 may be provided to include a first roller 71 and a second roller 73 rotatably fixed to the support panel 121 .

The rear support part 9 is a means for supporting a region located under a horizontal line H passing through the center of rotation of the drum among the circumferential surfaces of the rear cover 23, and is to be fixed to the base panel 17. Also, it may be fixed to the fixed panel 12, or may be fixed to the base panel and the fixed panel.

Although the above-described laundry treatment apparatus 100 has been described with reference to a case in which a circulating drying system is provided, the laundry treatment apparatus 100 may also be applied to an exhaust type drying system. The circulation drying system refers to a drying method in which dehumidification and heating of the air discharged from the drum 2 are sequentially performed, and then high temperature and dry air is re-supplied to the drum. The exhaust type drying system refers to a drying method in which outdoor air is heated and supplied to the drum 2 , and the air discharged from the drum 2 after heat exchange is completed is exhausted to the outside of the cabinet 1 .

When the clothes treatment apparatus 100 is provided as the exhaust drying system, the supply unit 3 includes an exhaust duct connecting the first exhaust port 128 and the second exhaust port 157, and outside air (in the cabinet). It may be provided to include a supply duct for supplying air or air outside the cabinet) to the drum 2 , and a heat exchange unit for heating the air introduced into the supply duct.

The above-described laundry treatment apparatus may be modified and implemented in various forms, and the scope of the present application is not limited to the above-described embodiments.

100: clothes processing device 1: cabinet 11: front panel
111: inlet 113: door 115: control panel
121: support panel 122: support panel through hole 123: drum connection body
124: connection damper 125: support part mounting groove 126: panel connection body
128: first exhaust port 129: filter 151: fixed panel
153: driving unit mounting groove 155: fixing panel through hole 157: second exhaust port
158: supply port 158a, 158b:: through hole 159: flow path forming part
17: base panel 2: drum 21: drum body
22: front cover 221: drum inlet 23: rear cover
231: shaft bracket mounting groove 233: air inlet 3: supply part
31: exhaust duct 32: supply duct 321: duct body
322: rotor receiving portion 323: projecting wall 324: flow guide
34: heat exchange part 341: heat absorbing part 343: heat generating part
345: compressor 347: pressure regulator 348: refrigerant pipe
349: fan 35: cooling passage 351: supply passage
353: exhaust passage 355: duct cover 357: guide passage
5: motor 51: stator 511: core
512: core through hole 513: electromagnet 52: rotor
52a: rotor body 521: rotor through hole 523: vane
524: fixed plate 52b: rotor circumferential surface 525: permanent magnet
6: power transmission unit 61: housing 61a: first housing
61b: second housing 611: first shaft support 612: first shaft through hole
613: first shaft bearing 616: second shaft support part 617: second shaft through hole
618: second shaft bearing 62: ring gear 63: first shaft
631: main gear 65: second shaft 651: shaft bracket
67: cage 671: base 675: connecting shaft
673: base cover 677: driven gear 677a: first body
677b: first gear 677c: second body 677d: second gear
7: Front first support part 71: First roller 73: Second roller
8: front second support part 9: rear support part

Claims (22)

A drum body providing a space for storing clothes, a front cover forming a front surface of the drum body, a rear cover forming a rear surface of the drum body, and a drum passing through the front cover and communicating with the inside of the drum body a drum equipped with an inlet;
a fixed panel provided at a position spaced apart from the rear cover;
a cylindrical housing fixed to the fixing panel and having an empty interior;
a motor having a stator fixed to at least one of the fixed panel and the housing to form a rotating magnetic field, and a rotor rotating by the rotating magnetic field;
a ring gear fixed to the inside of the housing;
a first shaft having one end fixed to the rotor and the other end positioned inside the housing;
a main gear fixed to the first shaft and positioned inside the housing;
a second shaft penetrating through the fixing panel and having one end fixed to the rear cover and the other end positioned inside the housing, and forming a concentric shaft with the first shaft;
a base positioned inside the housing and to which the other end of the second shaft is fixed;
A first body rotatably fixed to the base, a first gear provided on a circumferential surface of the first body and coupled to the main gear, a first gear fixed to the first body and having a smaller diameter than the diameter of the first body and a second body and a driven gear provided on a circumferential surface of the second body and provided with a second gear coupled to the ring gear. According to claim 1,
The diameter of the first gear is set longer than the diameter of the main gear,
and a diameter of the second gear is longer than a diameter of the main gear and shorter than a diameter of the first gear. 3. The method of claim 2,
The housing may include a second housing fixed to the fixing panel to rotatably support the second shaft; and a first housing fixed to the second housing and rotatably supporting the first shaft.
A circumferential diameter of the second housing is set to be smaller than a circumferential diameter of the first housing, and the ring gear is fixed to the circumferential surface of the first housing. 3. The method of claim 2,
The housing may include a second housing fixed to the fixing panel to rotatably support the second shaft; and a first housing fixed to the second housing and rotatably supporting the first shaft.
A circumferential surface diameter of the second housing is set to be smaller than a circumferential surface diameter of the first housing, and the ring gear is fixed to the circumferential surface of the second housing. 4. The method of claim 3,
The stator includes a core fixed to at least one of the fixing panel and the housing, and a core through hole provided to penetrate the core,
At least a portion of the housing is located inside the core through hole. 6. The method of claim 5,
a first shaft support portion protruding from the first housing toward the second housing;
a first shaft through hole through which the first shaft is inserted through the first shaft support; and
and a first shaft bearing rotatably fixing the first shaft to the first shaft support part. 7. The method of claim 6,
a connecting shaft fixed to the base to form a rotation shaft of the driven gear;
a base cover fixed to the connecting shaft to form a space in which the driven gear is accommodated; and
It further includes; a base cover through hole provided to pass through the base cover,
The free end of the first shaft support part is provided to pass through the base cover through hole. 7. The method of claim 6,
and the first shaft bearing is provided to include a first shaft first bearing and a first shaft second bearing provided along a longitudinal direction of the first shaft. 9. The method of claim 8,
and a second shaft bearing rotatably fixing the second shaft to the second housing. 10. The method according to any one of claims 1 to 9,
a front panel provided with an inlet and a door for opening and closing the inlet;
a support panel positioned between the front panel and the front cover;
a support panel through hole provided to pass through the support panel;
a drum connecting body connecting the support panel through-hole to the drum inlet;
a panel connecting body connecting the support panel through-hole to the inlet;
a first exhaust port provided to pass through the panel connection body;
a second exhaust port provided to pass through the fixing panel;
an exhaust duct connecting the first exhaust port and the second exhaust port;
a supply duct for supplying outside air to the drum; and
and a heat exchange unit for heating the outside air introduced into the supply duct. 10. The method according to any one of claims 1 to 9,
a front panel provided with an inlet and a door for opening and closing the inlet;
a support panel positioned between the front panel and the front cover;
a support panel through hole provided to pass through the support panel;
a drum connecting body connecting the support panel through-hole to the drum inlet;
a panel connecting body connecting the support panel through-hole to the inlet;
a first exhaust port provided to pass through the panel connection body;
a second exhaust port provided to pass through the fixing panel;
an exhaust duct connecting the first exhaust port and the second exhaust port;
a heat exchange unit for dehumidifying and heating the air moving along the exhaust duct;
a supply port provided to pass through the fixed panel;
a supply duct for guiding the air discharged from the second exhaust port to the supply port;
an air inlet having a plurality of holes passing through the rear cover arranged in a ring shape; and
and a flow path forming part provided in a ring shape surrounding the air inlet, fixed to the fixing panel, and guiding the air discharged from the supply port to the air inlet. 12. The method of claim 11,
and a ring-shaped damper provided at the free end of the drum connecting body or the drum inlet to connect the free end of the drum connecting body and an edge of the drum inlet. 13. The method of claim 12,
The damper is a laundry treatment apparatus, characterized in that provided with felt (felt). 12. The method of claim 11,
a driving unit mounting groove formed by concavely bending the fixing panel toward the rear panel;
a fixing panel through-hole provided in the driving unit mounting groove and through which the second shaft passes; and
and a driving unit bracket fixed to the fixing panel and positioned inside the driving unit mounting groove, to which the housing is fixed. 15. The method of claim 14,
and a sealing unit provided on the driving unit bracket or the fixing panel to seal the through hole of the fixing panel. a drum that provides space for clothing to be stored;
a fixed panel provided at a position spaced apart from the drum;
a housing fixed to the fixing panel and having an empty interior;
a motor having a stator fixed to at least one of the fixed panel and the housing to form a rotating magnetic field, and a rotor rotating by the rotating magnetic field;
a ring gear fixed to the inside of the housing;
a first shaft having one end fixed to the rotor and the other end positioned inside the housing;
a main gear fixed to the first shaft and positioned inside the housing;
a second shaft passing through the fixing panel, one end fixed to the drum and the other end positioned inside the housing, and forming a concentric shaft with the first shaft;
a base positioned inside the housing and to which the other end of the second shaft is fixed; and
A driven gear provided on the base to connect the main gear and the ring gear; includes,
The driven gear may include at least two first bodies rotatably fixed to the base; a first gear provided on a circumferential surface of each of the first bodies and coupled to the main gear; a second body protruding from each of the first bodies in a direction in which the rotor is positioned and having a diameter smaller than a diameter of the first body; and a second gear provided on a circumferential surface of each of the second bodies and coupled to the ring gear. 17. The method of claim 16,
The first gear is located between the base and the ring gear,
and the second gear is disposed between one surface of the housing positioned in a direction toward the rotor and the first gear. 17. The method of claim 16,
The housing may include a second housing fixed to the fixing panel to rotatably support the second shaft; and a first housing fixed to the second housing to rotatably support the first shaft and to which the ring gear is fixed;
and the first gear is positioned in a space formed by the second housing, and the second gear is positioned in a space formed by the first housing. 19. The method of claim 18,
The laundry treatment apparatus of claim 1, wherein a diameter of the first housing is set to be smaller than a diameter of the second housing. 19. The method of claim 18,
The stator includes a core fixed to the housing, a core through hole provided to penetrate the core, and a coil provided on a circumferential surface of the core,
At least a portion of the first housing is inserted into the core through hole. 19. The method of claim 18,
a first shaft support portion extending toward a space formed between the second gears in the first housing;
a first shaft through hole through which the first shaft is inserted through the first shaft support; and
and a first shaft bearing provided on the first shaft support part to rotatably fix the first shaft to the first shaft support part. 22. The method of claim 21,
The first shaft bearing is provided to include a first shaft first bearing and a first shaft second bearing provided along the longitudinal direction of the first shaft,
and at least one of the first shaft first bearing and the first shaft second bearing is provided to be positioned in a space formed between the second bodies.

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