KR20180082910A - A Laundry Treatment Machine - Google Patents

Abstract

The present invention relates to a laundry treatment machine capable of removing separate management of a lint filter. According to the present invention, the laundry treatment machine comprises: an outer tub to store washing water; an inner tub disposed inside the outer tub to be able to rotate so as to receive laundry; a pulsator disposed in the inner tub to be rotated; a clutch operation unit to control operation of a clutch, which selectively transfers rotational force of a motor to at least one from the inner tub and the pulsator rotated by the motor; a drain assembly to drain the washing water stored in the outer tub; a circulation assembly to circulate the washing water stored in the outer tub; a filter housing connected to the outer tub, the circulation assembly, and the drain assembly; and a passage changing unit connected to the clutch operation unit to be rotated inside the filtering housing, and filtering foreign matters flowing to the circulation assembly or discharging the foreign matters to the drain assembly.

Description

{A Laundry Treatment Machine}

The present invention relates to a laundry processing apparatus, and more particularly, to a laundry processing apparatus for collecting and discharging lint.

Generally, a washing machine is an apparatus for washing clothes using an emulsifying action of a detergent, a water flow action caused by rotation of the washing tub or the laundry blades, and a shock action applied by the laundry blades, and washing, rinsing and / Thereby removing the contamination of the laundry.

And a lint filter for filtering foreign substances such as lint from the laundry. However, there is a problem that the user must directly clean the lint filter. Further, when the lint filter is not cleaned in time, there is a hygienic problem such as being left contaminated, causing mold, and smelling odor. Therefore, the consumer has to constantly observe the contamination of the lint filter and clean it, which is a very troublesome problem.

In order to solve such a problem, JP2002027819A discloses a washing machine which forms two flow paths to be discharged from an outer tank, forms valves in the respective flow paths, and regulates each valve to collect and discharge the lint.

However, such a lint removing apparatus also has a problem in that it is troublesome to adjust the valve separately.

The object of the present invention is to provide a laundry processing apparatus which does not need to separately manage a lint filter.

Another object of the present invention is to provide a laundry processing apparatus in which lint is collected and discharged only by driving a general washing machine.

According to an aspect of the present invention, there is provided a laundry processing apparatus comprising: a tub; An inner tub rotatably installed in the outer tub, into which laundry is introduced; A pulsator provided in the outer tub and rotated; A clutch driving unit for controlling driving of a clutch that selectively transmits the rotational force of the motor to at least one of the inner tank and the pulsator rotated by the motor; A drainage assembly for draining washing water in the outer tub; A circulation assembly for circulating washing water in the outer tub; A filtering housing connected to said outer tub, said circulation assembly and said drain assembly; And a flow path changing unit connected to the clutch driving unit and rotating in the filtering housing to filter foreign substances flowing into the circulation assembly or to discharge foreign substances to the drain assembly, The changing part can be rotated to filter the lint in the circulation mode or to discharge the lint in the discharge mode.

According to another aspect of the present invention, there is provided a laundry processing apparatus, comprising: a filtering housing having an outer tubular connection portion opened to one side of a circumferential surface to be connected to the outer tub; A circulation channel connection portion opened to the other side of the circumferential surface to be connected to the circulation assembly; And a drainage channel connection portion opened to another side of the circumferential surface so as to be connected to the drainage assembly, wherein the flow channel changing portion includes: a first hole opened at one side of the circumferential surface and having a lint filter disposed therein; A second hole opened on the opposite surface of the first hole; And a third hole disposed between the first hole and the second hole and arranged to be opened in the direction of the drainage passage connection when the washing water in the outer tank is drained. In the circulation mode, In the drain mode, the first hole in which the filter is disposed may be disposed in the outer tank connection portion so that the lint can be filtered or discharged without a separate valve.

First, in the laundry processing apparatus according to the present invention, the lint is automatically filtered by the lint filter when the washing water flows into the circulation assembly, and the lint trapped in the lint filter is removed when the washing water flows into the drainage assembly, have.

Secondly, the laundry processing apparatus according to the present invention is advantageous in that the lint extractor can be controlled by the clutch driving device, and the lint extractor can be controlled without adding a separate configuration, thereby reducing the cost. Further, there is an advantage in that the operation of the lint extractor can be adjusted without providing any separate control means.

1 is a perspective view of a laundry processing apparatus according to an embodiment of the present invention.
2 is a view for explaining a schematic structure of a laundry processing apparatus according to the present embodiment.
3 is a view for explaining a relationship between a driving device, a clutch, a washing shaft and a rotating shaft of the laundry processing apparatus according to the present embodiment.
FIG. 4 is a view for explaining the relationship among the clutch, the clutch driving unit, and the coupling of the laundry processing apparatus according to the present embodiment.
5 is a view showing a connection relationship between a clutch driving unit and a lint extractor according to an embodiment of the present invention.
6 is an exploded view showing a configuration of a lint extractor according to an embodiment of the present invention.
FIG. 7 is a view for explaining the operation of the flow path changing part disposed inside the filtering housing of the lint extractor according to the embodiment of the present invention, wherein (a) shows the arrangement of the flow path changing parts in the circulation mode, Mode of the flow path changing portion.
8 is a view for explaining the operation of the clutch driving unit and the lint extractor according to the embodiment of the present invention, wherein (a) is a layout in a circulation mode and (b) is a layout in a drainage mode .

BRIEF DESCRIPTION OF THE DRAWINGS The advantages and features of the present invention, and how to accomplish them, will become apparent by reference to the embodiments described in detail below with reference to the accompanying drawings. The present invention may, however, be embodied in many different forms and should not be construed as being limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the invention to those skilled in the art. Is provided to fully convey the scope of the invention to those skilled in the art, and the invention is only defined by the scope of the claims. Like reference numerals refer to like elements throughout the specification.

Hereinafter, a laundry processing apparatus according to embodiments of the present invention will be described with reference to the drawings.

1 is a perspective view of a laundry processing apparatus according to an embodiment of the present invention. 2 is a view for explaining a schematic structure of a laundry processing apparatus according to the present embodiment.

The laundry processing apparatus 10 according to the present embodiment includes an outer tub 24 containing wash water; An inner tank (26) rotatably provided in the outer tank and into which laundry is introduced; A pulsator (30) provided in the outer tub and rotated; A clutch driving part (64) for controlling the driving of the clutch selectively transmitting the rotational force of the motor to at least one of the inner tank and the pulsator rotated by the motor; A drainage assembly (44) for draining wash water in the outer tank; A circulation assembly (50) circulating washing water in the outer tub to the inner tank; A filtering housing (110) connected to the outer tub, the circulation assembly and the drain assembly; And a flow path changing unit 130 connected to the clutch driving unit and rotating inside the filtering housing to filter foreign substances flowing into the circulation assembly or to discharge foreign substances to the drain assembly.

Referring to FIGS. 1 and 2, a laundry processing apparatus 10 according to an embodiment of the present invention is a top load type laundry processing apparatus 10 in which a bag is inserted into a washing tub upward. The top-load type laundry processing apparatus 10 is a concept including a laundry processing apparatus 10 in which a bag is inserted to perform washing, rinsing and dewatering, or a dryer in which a cloth is inserted to perform drying, The processing apparatus 10 will be mainly described.

The laundry processing apparatus 10 according to the present embodiment includes a case 12 forming an outer appearance and a door 14 which is rotatably installed in the case 12 and opens and closes an access hole for accessing the laundry.

The case 12 includes a cabinet 16 formed to open on the upper and lower surfaces and constituting a side surface of the laundry processing apparatus 10, a top cover installed to cover an opened upper surface of the cabinet 16, (20) provided on the open bottom surface of the base (16).

The door 14 opens and closes the inlet and outlet holes of the top cover 18. At least a part of the door 14 may be made of glass so that the inside can be seen.

The laundry processing apparatus 10 includes a control panel for providing a user interface including operation keys for receiving various control commands from a user, a display for displaying information on the operating state of the laundry processing apparatus 10, and the like. The control panel 22 may be mounted on one side of the top cover 18.

The laundry processing apparatus 10 may include an outer tank 24 containing washing water and an inner tank 26 rotatably provided in the outer tank 24 to receive the laundry. A balancer 28 may be provided on the upper portion of the washing tub to compensate eccentricity generated when the washing tub is rotated. The laundry processing apparatus 10 may include a pulsator 30 that forms a rotating water flow of washing water accommodated in the outer tub 24. The pulsator (30) is disposed on the bottom surface of the inner tank (26).

The laundry processing apparatus 10 according to the present embodiment includes a driving device 32 for providing a driving force for rotating the inner tank 26 and / or the pulsator 30, So that only the inner tank 26 is rotated or only the pulsator 30 is rotated or the inner tank 26 and the pulsator 30 are simultaneously rotated. The clutch is driven by the clutch driving portion 64 (see Fig. 4).

The washing machine includes a plurality of suspensions 34 for hanging the outer tub 24 at the upper inside of the cabinet 16. One end of the suspension 34 may be coupled to the upper portion of the inside of the cabinet 16 and the other end may be coupled to the lower portion of the outer tank 24. [ The suspension 34 can be coupled to the top cover 18 which is one of the constituent parts of the case 12. [ However, the present invention is not limited to this, and it is possible to be combined with any portion of the fixed portion of the case 12.

The laundry processing apparatus 10 according to the present embodiment includes a water supply assembly 36 for supplying washing water to the inside of the outer tub 24 and a drain assembly for draining the washing water in the outer tub 24 after the washing or dewatering is completed A circulation assembly 50 for circulating the washing water in the outer tub 24 to the inner tub 26 without draining to the outside during the washing or rinsing is arranged.

The water supply assembly 36 includes an external hose 38 for guiding the wash water supplied from an external faucet or the like to the laundry processing apparatus 10 and a water supply unit 38 connected to the external hose 38, A valve 40 and a water supply hose 42 connecting the water supply valve 40 and the detergent supply unit. The water supply valve (40) and the water supply hose (42) form a water supply channel for supplying wash water.

The drainage assembly 44 is formed on the lower surface of the outer tank 24 and includes a drain hose 46 for forming a drainage passage and a drain pump 48 for pumping washing water flowing in the drainage passage to the outside of the laundry processing apparatus 10 ). The drainage assembly 44 may be disposed between the outer tank 24 and the base 20.

The circulation assembly 50 includes a circulation hose 52 for forming a circulation channel formed to circulate the washing water in the outer tub 24 to the inner tub 26 without discharging the washing water to the outside during washing or rinsing, And a circulation pump for pumping washing water. The circulation assembly 50 may be disposed between the outer tub 24 and the cabinet 16.

The laundry processing apparatus 10 according to the present embodiment includes a lint extractor 100 connected to the outer tank 24 to send the washing water discharged from the outer tank 24 to the circulation assembly 50 or to the drain assembly 44 ). The lint extractor 100 is connected to the outer tub 24 by the outer tub hose 114. The lint extractor 100 is connected to the clutch to change the flow path. The lint extractor 100 filters the foreign substances contained in the washing water flowing into the circulation assembly 50 by the lint filter 138. The lint extractor 100 discharges the foreign matter filtered by the lint filter 138 to the drainage assembly 44.

3 is a view for explaining a relationship between a driving device, a clutch, a washing shaft and a rotating shaft of the laundry processing apparatus according to the present embodiment. FIG. 4 is a view for explaining the relationship among the clutch, the clutch driving unit, and the coupling of the laundry processing apparatus according to the present embodiment.

3 to 4, the driving device 32 according to the present embodiment rotates the pulsator 30 connected to the washing tub 60 or the inner tub 26 connected to the dewaxing shaft 62. The clutch engages or disengages the coupling 72 connected to the dewaxing shaft 62 with the stopper 74 to fix the dewaxing shaft 62 or fix the washing shaft 60.

The clutch includes a plunger 66 for changing the rotational motion of the clutch driving part 64 into a horizontal linear reciprocating motion, a lever rod 68 for changing the up and down movement of the plunger 66, And a clutch lever 70 for moving the coupling 72 up and down in motion.

The clutch is driven by the clutch driving portion 64. The clutch moves the coupling 72 to stop the operation of the inner tank 26 or the pulsator 30 by the clutch driving portion 64. [

When the clutch driving portion 64 rotates, the clutch lever 70 engages the coupling 72 with the stopper 74 or releases the coupling 72 from the stopper 74. The clutch driving portion 64 according to the present embodiment moves the coupling 72 in the rotating and stopping operation so that the coupling 72 is engaged with the stopper 74 or dropped from the stopper 74.

When the coupling 72 is engaged with the stopper 74, the dewaxing shaft 62 is fixed and the washing shaft 60 is rotated by the motor. When the coupling 72 is lowered, the coupling 72 is separated from the stopper 74 and the dampening shafts 62 and the washing shafts 60 are rotated by the motor.

However, in one embodiment, only the dewaxing shafts 62 can be rotated and the washing shafts 60 can be rotated or rotated at the same time as the coupling 72 moves.

5 is a view showing a connection relationship between a clutch driving unit and a lint extractor according to an embodiment of the present invention. 6 is an exploded view showing a configuration of a lint extractor according to an embodiment of the present invention. 7 is a view for explaining the operation of the flow path changing part disposed inside the filtering housing of the lint extractor according to the embodiment of the present invention. 8 is a view for explaining the operation of the clutch driving unit and the lint extractor according to the embodiment of the present invention.

Hereinafter, the configuration of the lint extractor and the connection relationship between the lint extractor and the clutch will be described with reference to Figs. 5 to 8. Fig.

Referring to FIG. 5, the lint extractor 100 according to the present embodiment is disposed under the outer tank 24. The lint extractor 100 is disposed at a predetermined distance from the clutch driving part 64. [ The lint extractor 100 is connected to the clutch driving part and the connector 160.

The lint extractor 100 according to the present embodiment forms an outer shape and includes a filtering housing 110 opened to be connected to the outer tank 24, the circulation assembly and the drainage assembly, and the lint extractor 100 connected to the clutch driving part 64, And a flow path changing unit 130 that rotates inside the tub 110 and filters foreign substances flowing into the circulating assembly or discharges foreign substances to the drain assembly.

The filtering housing 110 has a cylindrical shape with a hollow interior. The filtering housing 110 includes an outer tubular connection portion 112 opened to one side of the circumferential surface to be connected to the outer tub 24, a circulating flow channel connection portion 116 opened to the other side of the circumferential surface to be connected to the circulation assembly, And a drainage channel connection portion 118 opened to another side of the circumferential surface.

The outer tubular connection part 112 and the circulating flow path connection part 116 are disposed on opposite sides of the circumference surface of the filtering housing 110. The holes formed by the outer tubular connecting portion 112 are arranged to face the holes formed by the circulating flow channel connecting portion 116. The outer tubular connection portion 112 is formed at a portion rotated by 180 degrees about the center of the circulation channel connection portion 116 and the filtering housing 110.

The drainage channel connection portion 118 is disposed between the outer tubular connection portion 112 and the circulation channel connection portion 116 at the peripheral surface of the filtering housing 110.

The lint extractor 100 is disposed under the outer tank 24. The outer tub connection 112 is connected to the outer tub 24 by the outer tub hose 114. The wash water discharged from the outer tub 24 flows to the lint extractor 100 through the outer tub hose 114.

The filtering housing 110 may have one of the upper surface and the lower surface opened. The lint extractor 100 may further include a cover disposed on one opened surface of the filtering housing 110. [ The filtering housing 110 has a through hole 120 through which the rotation transmission shaft 140 of the flow path changing part 130 passes. The filtering housing 110 has a through-hole 120 formed on the opposite side of the surface on which the cover is disposed.

The flow path changing portion 130 has a cylindrical shape with a hollow interior. The flow path changing unit 130 is rotatably disposed inside the filtering housing 110. At least one opening hole is formed in the circumferential surface of the flow path changing portion 130. The passage changing portion 130 is disposed in an opening hole formed in the circumferential surface, and a lint filter 138 for filtering foreign matters is disposed.

The passage changing portion 130 according to the present embodiment includes a first hole 132 opened at one side of the circumferential surface and having a lint filter 138 disposed therein; A second hole 134 opened at an opposite circumferential surface of the first hole 132; And a third hole 136 disposed between the first hole 132 and the second hole 134 are formed. The third hole 136 is disposed in the direction of the drainage channel connection portion 118 when draining wash water in the outer tub 24. The third hole 136 is formed to be disposed in the direction of the drainage passage connection 118 in the drainage mode.

The flow path changing unit 130 has a surface facing the lid and a rotation transmitting shaft 140 connected to the rotating member 150 is formed on the other surface. The rotation transmitting shaft 140 protrudes outside the filtering housing 110 through the through hole 120 of the filtering housing 110. The rotation transmitting shaft 140 is connected to the rotating member 150. The rotation transmitting shaft 140 is connected to the center of the rotating member 150.

The lint collector 100 further includes a rotating member 150 connected to the clutch driving unit 64 and the connector 160 to rotate the flow path changing unit 130 by the operation of the clutch driving unit 64. The rotary member 150 rotates the flow path changing portion 130 by the operation of the clutch driving portion 64.

The rotary member 150 includes a rotary plate 152 rotated on the outside of the filtering housing 110, a protrusion 156 connected to the connector 160 to rotate the rotary plate 152, And a rotation transmission shaft-coupling part 154 which is coupled with the rotation transmission shaft. The rotating plate is disposed to face one side of the filtering housing 110. The rotation transmitting shaft-engaging portion 154 is disposed at the center where the rotation axis of the rotating plate is formed.

The projecting portion 156 protrudes from one side of the rotary plate. The protruding portion 156 protrudes perpendicularly to the rotary plate 152 away from the center of the rotary shaft of the rotary plate. The projecting portion 156 is connected to the clutch driving portion 64 by the connector 160.

The connector 160 connects the clutch driving portion 64 and the protruding portion 156 of the rotating member 150. The connector 160 transmits the rotating force of the clutch driving portion 64 to the rotating member 150.

The lint extractor 100 according to the present embodiment is connected to the clutch driving part 64 to change the flow path according to the circulation mode or the drain mode by the operation of the clutch driving part 64. [

Hereinafter, the operation of the lint extractor 100 according to the mode of the laundry processing apparatus 10 according to the present embodiment will be described with reference to FIGS.

The laundry processing apparatus 10 according to the present embodiment includes a circulation mode in which the wash water of the outer tub 24 flows to the circulation assembly 50 and a drain mode in which the wash water flows into the drain assembly 44. In the circulation mode according to the present embodiment, the circulation pump 54 of the circulation assembly 50 operates, and the wash water flowing out of the outer tank 24 flows into the inner tank 26. In the drainage mode according to the present embodiment, the drainage pump 48 of the drainage assembly 44 operates to discharge the wash water exiting the outer tank 24 to the outside.

In the laundry processing apparatus 10 according to the present embodiment, in the circulation mode, the clutch driving unit 64 may be located at the first position as shown in FIG. 8 (a). When the clutch driving part 64 is located at the first position, the driving device 32 can rotate the pulsator 30. [

In the laundry processing apparatus 10 according to the present embodiment, in the dehydration mode, the clutch driving unit 64 may be located at the second position as shown in FIG. 8 (b). When the clutch driving portion 64 is located at the second position, the driving device 32 can rotate both the inner tub 26 and the pulsator 30.

The driving of the pulsator 30 and / or the inner tank 26 in the above-described circulation mode or the drainage mode is one embodiment, and the driving of the pulsator 30 and / or the inner tank 26 is also possible.

The lint extractor 100 according to the present embodiment sends the washing water flowing out of the outer tub 24 to the circulation assembly 50 or the drainage assembly 44. The lint extractor 100 is connected to the clutch driving unit 64 to send wash water to the circulation assembly 50 or the drain assembly 44.

The clutch drive portion 64 according to the present embodiment is located in the first position in the circulation mode. When the clutch driving portion 64 is located at the first position as shown in FIG. 8A, the lint extractor sends the washing water exiting the outer tub 24 to the circulating assembly 50 as shown in FIG. 7A . The first hole 132 of the flow path changing portion 130 where the lint filter 138 is disposed is disposed toward the circulating flow path connecting portion 116 of the filtering housing 110. The second hole 134 disposed on the opposite side of the first hole 132 is disposed toward the outer tubular connection portion 112. The third hole 136 is disposed on a non-opened surface of the filtering housing 110. The drainage channel connecting portion 118 of the filtering housing 110 is closed by disposing one surface of the channel changing portion 130 which is not opened.

In the circulation mode, the circulation pump 54 operates so that the wash water flows into the outer tub connection part 112 and is discharged to the circulation flow path connection part 116 in the lint extractor 100. Therefore, the foreign substances that have escaped from the outer tub 24 together with the washing water are filtered by the lint filter 138 disposed in the first hole 132.

The clutch driving portion 64 according to the present embodiment is located at the second position rotated 180 degrees from the first position in the drain mode. When the clutch driving unit 64 is located at the second position as shown in FIG. 8 (b), the lint extractor moves the washing water, which has passed through the outer tub 24, to the drainage assembly 44 send. The first hole 132 of the flow path changing portion 130 in which the lint filter 138 is disposed is disposed toward the outer tubular connecting portion 112 of the filtering housing 110. The second hole 134 is disposed toward the circulating flow passage connection portion 116. The third hole 136 is disposed toward the drain passage connecting portion 118.

The drainage assembly is disposed at a lower position than the circulation assembly. The circulation channel is formed at a position higher than the lint extractor 100. Even if the circulating flow path connection portion 116 is opened in the drainage mode, the washing water is not accumulated in the circulation flow path. Further, in the drain mode, the drain pump 48 operates, and the wash water is drained to the drain assembly without being circulated to the circulating flow channel.

In the drain mode, the drain pump 48 operates, so that the wash water flows into the outer tub connection 112 in the lint extractor and is discharged to the drainage channel connection part 118. The wash water flowing in the outer tub connection part 112 sends the foreign matter filtered by the lint filter 138 to the drainage assembly 44. Therefore, in the circulation mode, the foreign matter filtered by the lint filter 138 is drained to the outside in the drainage mode.

The position of the clutch driving part 64 shown in FIGS. 7 to 8, the shape of the filtering housing 110, and the position of the hole of the flow path changing part 130 are, as one embodiment, Can be changed within a range capable of driving the group.

It will be understood by those skilled in the art that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. It is therefore to be understood that the above-described embodiments are illustrative and non-restrictive in every respect. The scope of the present invention is defined by the appended claims rather than the foregoing detailed description, and all changes or modifications derived from the meaning and scope of the claims and the equivalents thereof are included in the scope of the present invention Should be interpreted.

10: laundry processing device 24: outer bath
26: My Tune 30: Pulsater
44: drainage assembly 50: circulation assembly
64: clutch driving part 100: lint collector
110: filtering housing 130:
150: rotating member 160: connector

Claims (10)

The wash tank contains the outer tank;
An inner tub rotatably installed in the outer tub, into which laundry is introduced;
A pulsator provided in the outer tub and rotated;
A clutch driving unit for controlling driving of a clutch that selectively transmits the rotational force of the motor to at least one of the inner tank and the pulsator rotated by the motor;
A drainage assembly for draining washing water in the outer tub;
A circulation assembly for circulating washing water in the outer tub;
A filtering housing connected to said outer tub, said circulation assembly and said drain assembly; And
And a flow path changing unit connected to the clutch driving unit and rotating inside the filtering housing to filter foreign substances flowing into the circulation assembly or to discharge foreign substances to the drain assembly. The method according to claim 1,
And a rotating member connected to the clutch driving unit and the connector to drive the flow path changing unit by operation of the clutch driving unit. 3. The method of claim 2,
Wherein the flow path changing portion includes a rotation transmitting shaft for receiving a rotating force of the rotating member,
The rotating member includes:
A rotating plate that rotates outside the filtering housing;
A protrusion connected to the connector to rotate the rotating plate; And
And a coupling part connected to the rotation transmission shaft at a center of the rotation plate. The method according to claim 1,
Wherein the filtering housing comprises:
An outer tubular connection portion opened to one side of the circumferential surface to be connected to the outer tub;
A circulation channel connection portion opened to the other side of the circumferential surface to be connected to the circulation assembly; And
And a drainage channel connection portion opened to another side of the circumferential surface to be connected to the drainage assembly. 5. The method of claim 4,
Wherein the outer tubular connecting portion and the circulating duct connecting portion are disposed on opposite surfaces of the circumferential surface of the filtering housing. 6. The method of claim 5,
The drainage channel connection portion includes:
And a filter disposed on one side of the circumferential surface of the filtering housing between the outer tubular connection portion and the circulating flow channel connection portion. The method according to claim 1,
Wherein the flow path changing portion has a cylindrical shape with a hollow interior,
And a lint filter is disposed on at least one of the circumferential surfaces and the open circumferential surface. The method according to claim 1,
The flow-
A first hole opened at one side of the circumferential surface and having a lint filter disposed therein;
A second hole opened on the opposite surface of the first hole; And
And a third hole disposed between the first hole and the second hole, the third hole being disposed to be opened in the direction of the drainage passage connection portion when draining washing water in the outer tank. 5. The method of claim 4,
The flow-
A first hole opened at one side of the circumferential surface and having a lint filter disposed therein;
A second hole opened on the opposite surface of the first hole; And
A third hole disposed between the first hole and the second hole and disposed to be opened in the direction of the drainage passage connecting portion when the wash water in the outer tank is drained,
Wherein the first hole is disposed to face the outer tubular connection part or the drainage channel connection part. The method according to claim 1,
Wherein the drainage assembly includes a drainage hose forming a drainage passage and a drainage pump for pumping the wash water flowing on the drainage passage,
Wherein the circulation assembly includes a circulation hose forming a circulation flow path, and a circulation pump for pumping washing water flowing on the circulation flow path.

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