KR20170137783A - washer - Google Patents

Abstract

The automatic washing machine according to the present invention is provided with a circulation water passage (25) installed at a side portion of a washing and dewatering tank (21) and allowing water flowing through the pulsator (23) to pass therethrough; A water channel forming member 26 which is a resin that forms a reflux channel 25 between itself and the inner peripheral wall 21a of the washing and dewatering tank 21; A filter mounting portion 201 formed on the water channel forming member 26; And the filter mounting portion 201. The water returning from the circulating water passage 25 to the washing and dewatering tank 21 and the water stream generated through the rotation of the pulsator 23 move along the inner peripheral wall 21a A filter unit (27) through which the flowing water flows and collects seams and the like contained in the water; Respectively. The filter mounting portion 201 includes a lower support shaft 202 constituting a rotation axis of the filter unit 27; And an opening 206 formed at the rear of the lower support shaft 202 and communicating with the return flow passage 25; And a wall portion 210 for preventing water from flowing out through the opening portion 203 is formed toward the inner peripheral wall on a surface of the water passage forming member 26 facing the reflux channel 25. [ The wall portion 210 can improve the collection efficiency of the filter unit 27 with respect to the seam.

Description

washer

The present invention relates to a washing machine.

In the conventional automatic washing machine, a seam collecting structure as shown in FIG. 10 can be used as one of the structures for collecting seams and dusts from laundry when washing. For example, a washing machine using the filtration collecting structure is described in Patent Document 1.

10 (a) is a cross-sectional view showing a main portion of the washing and dewatering tank 500 of the septum filtration collecting structure. At the side of the washing and dewatering tank 500, a reflux channel 520 is formed by the water channel forming member 510. The filter unit 530 is freely detachably attached to the filter mounting portion 511. The filter mounting portion 511 is formed with a filter mounting portion 511 which is recessed rearward. A first support shaft 512 protruding upward is formed on the lower surface 511a of the filter mounting portion 511. A first shaft hole 513 is formed in the upper surface 511b and a second shaft hole 512 is formed in the rear surface 511c. An outlet 514 is formed. The first support shaft 512 is inserted into the second shaft hole 531 provided at the lower portion of the filter unit 530 and the second support shaft 532 provided at the upper portion of the filter unit 530 is inserted into the first shaft hole 513, Respectively. Therefore, the filter unit 530 can rotate by a predetermined angle only in the left and right directions with the first support shaft 512 and the second support shaft 532 as rotation axes. The reflux channel 520 is connected to the side of the pulsator 540.

As the pulsator 540 rotates, the water pushed outward by the positive wing 541 of the pulsator 540 flows into the return flow channel 520 and flows out of the outlet 514 And returns to the washing and dewatering tank 500 through the filter unit 530. At this time, the seams and the like contained in the water are collected by the filter unit 530.

In addition, the filter unit 530 is pushed by the water flow generated by the rotation of the pulsator 540, and water flowing along the inner peripheral wall of the laundry dewatering tank 500, as indicated by the arrow F2, And then flows into the filter unit 530 through the suction port 533 and passes through the filter unit 530. At this time, the seams or the like which are introduced together with the water are collected in the filter unit 530.

Prior art literature

[Patent Literature]

Patent Document 1: Japanese Patent Application Laid-Open No. 2000-334198

The water channel forming member 510 may be formed of a resin material. In this case, the water channel forming member 510 can be manufactured by molding with a mold.

10 (b) is a view showing a main portion of a mold M for molding the water passage forming member 510. Fig. For example, in the formation of the water channel forming member 510, the metal mold 502 is divided into the front and rear direction of the water channel forming member 510, which is composed of the first metal mold M1 on the front surface side and the second metal mold M2 on the rear surface side, (M) can be used. In this case, since the first support shaft 512 is formed by the second mold M2, the second support shaft 512 is disposed on the rear surface 511c of the filter mounting portion 511 at a position behind the first support shaft 512 M2 are formed. It should be noted that the first support shaft 512 may be formed through the third mold by adding a third mold that slides in the protruding direction of the first support shaft 512 to the mold M. [ However, in this case, since the opening 515 is not formed, a sliding mark may be formed on the rear surface 511c, which may affect the appearance or may cause seams to be caught.

The opening portion 515 formed in the water passage forming member 510 is communicated with the inside of the circulating water passage 520. Therefore, as indicated by an arrow F3 in Fig. 10 (a), a part of the water passing through the reflux channel 520 toward the outlet port 514 flows out from the opening 515. [ The spilled water returns to the washing and dewatering tank 500 without passing through the filter unit 530. As a result, the collection efficiency of the filter unit 530 for seams and the like is lowered.

Accordingly, it is an object of the present invention to provide a washing machine with improved collecting efficiency for seams and the like.

A washing machine according to an embodiment of the present invention includes: a laundry dewatering tank for containing laundry; A pulsator disposed freely rotatably on the bottom of the washing and dewatering vessel; A circulation passage installed in a side portion of the washing and dewatering vessel for passing water flowing by rotation of the pulsator; A water channel forming member which is a resin forming the reflux channel between the inner peripheral wall and the inner peripheral wall of the washing and dewatering tank; A filter mounting portion formed on the water channel forming member; And water flowing through the inner peripheral wall by the water returning from the circulating water channel into the washing and dewatering vessel and the water stream generated through rotation of the pulsator, A filter unit for collecting seams contained in the filter unit; Respectively. Wherein the filter mounting portion comprises: a support shaft constituting a rotation axis of the filter unit; And an opening formed behind the support shaft and communicating with the reflux channel; . Furthermore, on the surface facing the return flow path from the water channel forming member, a wall portion for preventing water from flowing out through the opening is formed toward the inner peripheral wall side.

According to the above structure, the water flowing in the reflux channel can be well introduced into the filter unit, so that the collection efficiency of the filter unit with respect to the seam can be improved.

In the washing machine of the present embodiment, the wall portion may be configured so that at least the lower side, the left side, and the right side of the opening portion surround the three directions.

According to the above structure, it is possible to prevent the water, which is hit immediately against the wall below the wall portion, from being introduced into the opening portion from the side surface, thereby further preventing the water from flowing out through the opening portion.

When the above structure is used, a gap can be further formed between the wall portion and the inner peripheral wall.

With this structure, when the dehydration process is performed, even if the water discharged from the laundry flows into the wall portion surrounding at least three directions of the opening, the inflowed water can flow out into the reflux channel through the gap. Therefore, it is possible to prevent water from remaining in the interior of the wall portion.

In the washing machine according to the present embodiment, the wall portion may include a protruding portion having a central portion protruding further toward the upstream side of the return flow passage than both end portions in the left-right direction of the opening portion.

According to the above structure, the water flowing in the reflux channel can be smoothly divided into left and right directions by colliding with the protrusion. As a result, it is possible to prevent the flow rate of water in the reflux channel from being lowered, so that the seam or the like can be easily transported to the filter unit along the water stream.

The present invention can provide a washing machine with improved collection efficiency for seams and the like.

The effects and meanings of the present invention will become more apparent from the following description of the embodiments. However, the following embodiments are merely illustrative examples of the present invention, and the present invention is not limited to the following embodiments.

1 is a side sectional view showing the structure of a fully automatic washing machine according to an embodiment.
2 is a longitudinal sectional view showing a main portion of a washing and dewatering tank in a peripheral portion of a reflux channel according to the embodiment.
3 is a cross-sectional view showing a main portion of the washing and dewatering tank at the peripheral portion of the reflux channel according to the embodiment.
4 is a diagram showing a structure of a filter unit according to the embodiment;
5 is a front view showing the structure of the water channel forming member according to the embodiment.
6 is a rear perspective view showing the structure of the water channel forming member according to the embodiment.
Fig. 7 is a view showing the water flow introduced into the reflux channel toward the outlet according to the embodiment; Fig.
8 is a rear perspective view of a main portion of the water channel forming member showing the waterproof wall structure according to Modified Example 1 and Modified Example 2;
FIG. 9 is a diagram illustrating a structure of a waterproof wall portion according to another modification; FIG.
10 is a view for explaining an example of a seam collecting structure.

Hereinafter, a fully automatic washing machine according to an embodiment of the washing machine of the present invention will be described with reference to the drawings.

1 is a side sectional view showing the structure of a fully automatic washer.

A fully automatic washer (1) has a case (10) constituting an appearance. The case 10 includes a rectangular tubular body 11 having open upper and lower surfaces; An upper plate (12) covering an upper surface of the body part (11); And a pedestal (13) for supporting the body part (11); . A laundry inlet 14 is formed in the upper surface plate 12. The inlet 14 is covered by an upper cover 15 which is freely opened and closed.

In the case 10, the outer tank 20 is held by four hanging rods (not shown) so as to be elastically hooked. A washing and dewatering tank (21) is disposed in the outer tank (20). The outer tub 20 and the laundry dewatering tank 21 are slightly inclined forward. The washing and dewatering machine 21 rotates about the rotation axis R slightly inclined forward with respect to the vertical direction. The case 10 has a protruding portion 10a protruding forward corresponding to the degree to which the upper portion of the outer tub 20 is projected forward.

A plurality of dewatering holes 21b are formed in the inner peripheral wall 21a of the washing and dewatering tank 21. [ In addition, a plurality of water supply holes 21c are formed on the bottom surface of the laundry dewatering tank 21. [ Furthermore, a balance ring 22 is provided on the upper portion of the washing and dewatering tank 21.

A pulsator (23) is disposed at the bottom of the washing and dewatering tank (21). On the surface of the pulsator 23, a plurality of vanes 23a extending radially from the center of the surface are formed. In addition, on the back surface of the pulsator 23, a plurality of positive vanes 23b extending radially from the center of the back surface are formed. The positive wing 23b is disposed in the pump chamber 24 between the back surface of the pulsator 23 and the bottom surface of the washing and dewatering tank 21.

The reflux channel 25 extending in the vertical direction along the inner peripheral wall 21a of the washing and dewatering tank 21 is formed by the water channel forming member 26 and the inner peripheral wall 21a. The lower end of the reflux channel 25 is connected to the pump chamber 24. The filter unit 27 is detachably mounted to the circulation passage 25, that is, the water passage forming member 26 constituting the circulation passage 25. [ The filter unit 27 collects seams and dust from laundry when washing.

At the bottom of the outer tub 20, a driving unit 30 for generating torque for driving the laundry dewatering tank 21 and pulsator 23 is disposed. The drive unit (30) includes a drive motor (31) and a delivery mechanism (32). The transmission mechanism portion 32 is provided with a clutch mechanism and transmits the torque of the drive motor 31 only to the pulsator 23 through the switching operation of the clutch mechanism during the washing process and the rinsing process to rotate only the pulsator 23 ; In the dewatering process, the torque of the drive motor 31 is transmitted to the pulsator 23 and the washing and dewatering tank 21 so that the pulsator 23 and the washing and dewatering tank 21 are rotated integrally. In addition, the delivery mechanism section 32 includes a deceleration mechanism. During the washing process and the rinsing process, the pulsator 23 rotates at a rotational speed reduced by the rotation speed of the driving motor 31 in accordance with the reduction ratio of the reduction mechanism.

A drain port portion 20a is formed at the bottom of the outer tank 20. [ A drain valve 40 is provided in the drain hole portion 20a. The drain valve (40) is connected to the drain hose (41). When the drain valve (40) is opened, the water stored in the washing and dewatering tank (21) and the outer tank (20) is discharged to the outside of the washing machine through the drain hose (41).

A water supply unit (50) for supplying tap water into the washing and dewatering tank (21) is disposed at the rear of the top plate (12). A water supply valve (51) is connected to the water supply unit (50), and a water supply valve (51) is connected to the water faucet. The water supply unit (50) is supplied with detergent during washing operation. When the water supply valve (51) is opened, tap water flows into the water supply unit (50). The introduced tap water is mixed with the detergent in the water supply unit 50, then flows out from the water supply unit 50 and is supplied into the washing and dewatering tank 21.

The fully automatic washer 1 performs washing operations of various operating courses. The washing operation includes a washing process, a middle dewatering process, a rinsing process and a final dewatering process.

During the washing process and the rinsing process, the pulsator 23 is rotated leftward or rightward in a state where water is stored in the washing and dewatering tank 21. The water flow is generated in the washing and dewatering tank 21 through the rotation of the pulsator 23. In the washing process, the laundry is washed by the generated water and the detergent contained in the water. In the rinsing process, the laundry is rinsed by the generated water stream.

In the intermediate dewatering process and the final dewatering process, the washing and dewatering vessel 21 and the pulsator 23 are rotated at a high speed integrally. The laundry is dehydrated by the centrifugal force generated in the washing and dewatering tank (21).

The automatic washing machine 1 of the present embodiment is characterized by a seam collecting structure composed of a reflux passage 25 and a filter unit 27. Hereinafter, the seam collecting structure will be described in detail.

2 is a longitudinal sectional view showing a main portion of the washing and dewatering tank 21 in the peripheral portion of the circulation water passage 25. As shown in Fig. 3 is a longitudinal sectional view showing a main portion of the washing and dewatering tank 21 in the peripheral portion of the circulation water passage 25. Fig.3A shows a state in which a clockwise water flow is generated, And the water flow in the counterclockwise direction is generated. 4 (a) is a perspective view of the filter unit 27, and Fig. 4 (b) is a side longitudinal sectional view of the filter unit 27. Fig. 5 and 6 are a front view and a rear perspective view showing the structure of the water passage forming member 26, respectively.

The filter unit 27 has a seam filter 110 and a filter case 120. The seam filter 110 is composed of a bag, which is a mesh fabric. The filter case 120 is formed into a vertically long hollow cube shape, and the rear surface thereof is opened to form a suction port 121. A mounting opening 122 is formed in the front surface of the filter case 120 and a seam filter 110 is mounted in the mounting opening 122.

An elastic piece 123 is formed on the upper end of the filter case 120 so as to be downwardly curved. An upper support shaft 124 protruding upward is formed on the upper surface of the elastic piece 123. In addition, an operating piece 125 is formed at the front end of the elastic piece 123. [ The user pushes the operating piece 125 with his fingers so that the elastic piece 123 is bent downward. Furthermore, a lower shaft hole 126 is formed at the lower end of the filter case 120. [

The water channel forming member 26 is formed of a resin material, extends in the vertical direction and protrudes slightly forward. In the water channel forming member 26, its surface is directed to the inside of the washing and dewatering tank 21, and its back surface is directed to the inside of the circulating water channel 25. On the surface of the water passage forming member 26, a filter mounting portion 201 recessed in a shape corresponding to the filter case 120 of the filter unit 27 is formed.

In the filter mounting portion 201, a bottom support shaft 202 protruding upward is formed in the bottom portion 201a, and an upper shaft hole 203 is formed in the top portion 201b. The lower support shaft 202 corresponds to the support shaft of the present invention.

A plurality of outflow ports 204 are formed in the rear surface 201c of the filter mounting portion 201 at a position approaching the center portion and slightly below the center portion. In addition, a concave portion 205 is formed on the upper portion of the rear surface 201c of the filter mounting portion 201. [ When the filter unit 27 is mounted on the filter mounting portion 201, the rear portion of the elastic piece 123 of the filter unit 27 is accommodated in the recess 205.

A rectangular opening 206 slightly larger than the lower support shaft 202 is formed at a rear position of the lower support shaft 202 on the rear surface 201c of the filter mounting portion 201. [ The water channel forming member 26 can be manufactured by molding with a mold. As shown in Fig. 10 (b), an opening 206 is formed in order to allow a mold for forming the lower support shaft 202 to pass through during molding. The opening 206 communicates with the inside of the circulating water passage 25.

On the left and right sides of the filter mounting portion 201 on the surface of the water channel forming member 26, a right water channel 207 and a left water channel 208 which are recessed in the same manner as the plurality of filter mounting portions 201 and extend in the left- .

On the back surface of the water channel forming member 26, a water channel split rib 209 having a double structure is formed toward the rear. The inner region of the water channel split ribs 209 constitutes a reflux channel 25. A waterproof wall portion 210 is formed in the periphery of the opening 206 in the back surface of the water channel forming member 26 toward the rear side or toward the inner peripheral wall 21a side of the washing and dewatering tank 21. The waterproof wall portion 210 corresponds to the wall portion of the present invention. The waterproofing wall portion 210 is formed in a rectangular barrel shape to surround all the openings 206 and has a lower wall 211, an upper wall 212, a left wall 213 and a right wall 214. 2, a predetermined clearance (not shown) is formed between the waterproof wall portion 210 and the inner peripheral wall 21a in a state where the water channel forming member 26 is mounted on the inner peripheral wall 21a of the washing and dewatering tank 21 S are formed.

The filter unit 27 is mounted on the filter mounting portion 201 of the water passage forming member 26. The user first inserts the lower support shaft 202 of the filter mounting portion 201 into the lower shaft hole 126 of the filter unit 27. At this time, Next, the user pushes down the operating piece 125 of the filter unit 27, causing the elastic piece 123 to be bent downward such that the upper support shaft 124 is lower than the upper shaft hole 203 of the filter mounting portion 201 , The upper portion of the filter unit 27 is moved backward. When the upper support shaft 124 reaches the position of the upper shaft hole 203, the user releases the bending of the elastic piece 123 and inserts the upper support shaft 124 into the upper shaft hole 203. The filter unit 27 is rotated in the rightward or leftward direction by a predetermined angle when viewed from the front of the water passage forming member 26 with the upper support shaft 124 and the lower support shaft 202 as rotation axes As shown in Fig.

Next, the collecting operation of the filter unit 27 for seams and the like will be described with reference to Figs. 2 and 3. Fig.

The water between the laundry dewatering tank 21 and the outer tank 20 flows through the water passage hole 21c through the pump chamber 23a during the washing process or the rinsing process by the action of the amphorae 23b during the rotation of the pulsator 23, (24), and is pushed outwardly. The pressurized water rises in the reflux water channel 25 and flows out from the outlet port 204 and passes through the seawater filter 110 of the filter unit 27 and into the washing and dewatering tank 21 Come back. At this time, the seams and the like contained in the water are collected by the seam filter 110.

3 (a) and 3 (b), when the pulsator 23 is rotated to generate a water flow in the clockwise direction or in the counterclockwise direction, the filter unit 27 is rotated rightward or leftward It tilts. The water flowing along the inner peripheral wall 21a of the washing and dewatering tank 21 flows into the filter unit 27 through the suction port 121 on the rear surface and the seawater filter 110 . At this time, the seams and the like contained in the water are collected by the seam filter 110.

7 is a view showing the flow of water flowing into the reflux channel 25 toward the outlet 204. As shown in Fig. The opening 206 located upstream of the outlet 204 is surrounded by the waterproofing wall 210 so that the water rising in the refluxing water channel 25 collides with the lower wall 211 of the waterproofing wall 210, And flows through the left and right sides of the waterproof wall portion 210 to reach the outlet 204. [ Thereby, it is possible to prevent a part of the water flowing in the reflux channel 25 from flowing out from the opening 206.

It should be explained that when the dehydration process is performed, the water discharged from the laundry may flow into the waterproof wall 210 through the opening 206. In this case, the inflow water flows into the reflux channel 25 through the gap S between the waterproof wall portion 210 and the inner peripheral wall 21a. Therefore, it is difficult for water to remain in the waterproof wall portion 210.

≪ Effect of the present embodiment &

According to the present embodiment described above, it is possible to prevent a part of the water flowing in the reflux channel 25 from flowing out of the opening 206 through the waterproof wall portion 210 provided on the back surface of the water channel forming member 26. Therefore, since the water flowing in the circulation channel 25 can be easily introduced into the filter unit 27, the collection efficiency of the filter unit 27 with respect to the seam can be improved.

According to the present embodiment, since the waterproof wall portion 210 is configured to surround the four sides of the opening 206, it is possible to prevent the water immediately branched from the bottom wall 211 from flowing into the opening 206 from the side So that it is possible to further prevent the water from leaking out of the opening 206.

According to the present embodiment, since the gap S is formed between the waterproof wall portion 210 and the inner peripheral wall 21a of the washing and dewatering container 21, The inflow water can flow into the reflux channel 25 through the gap S and water can be prevented from remaining in the waterproof wall portion 210. [

Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and various modifications other than the above can be made in the embodiments of the present invention.

<Modification Example 1>

8 (a) is a rear perspective view of a main portion of the water passage forming member 26 showing the structure of the waterproofing wall portion 210A according to the first modification.

The waterproofing wall portion 210A of this modification example was composed only of the lower wall 211 extending in the left and right direction from the lower edge of the opening portion 206. [ The width of the waterproof wall portion 210A is set larger than the width of the opening 206 in the lateral direction. The water rising in the circulation channel 25 flows into the right and left sides of the waterproof wall portion 210A and flows to the left and right sides of the waterproof wall portion 206 and reaches the outlet 204.

Therefore, according to this modification example, it is possible to prevent a part of the water flowing in the reflux channel 25 from flowing out of the opening 206, thereby improving the collection efficiency of the filter unit 27 with respect to seams and the like.

<Modification example 2>

8B is a rear perspective view of a main portion of the water passage forming member 26 showing the structure of the waterproofing wall portion 210B according to the first modification.

The waterproof wall portion 210B of this modification includes a substantially V-shaped protrusion 215 below the lower wall 211 and having a central portion that protrudes further toward the upstream side of the reflux channel 25 than both the left and right ends thereof do. Water rising in the circulation channel 25 collides with the projecting portion 215 and is divided into left and right portions and flows to the left and right sides of the waterproof wall portion 210B to reach the outlet 204.

Therefore, according to this modification example, it is possible to prevent a part of the water flowing in the reflux channel 25 from flowing out of the opening 206, thereby improving the collection efficiency of the filter unit 27 with respect to seams and the like.

Furthermore, according to this modification example, the water flowing in the reflux channel 25 can be smoothly divided into left and right portions by colliding with the protruding portion 215. Thus, it is possible to prevent the water flow rate in the reflux channel 25 from being lowered, so that the seam or the like can be easily transported to the filter unit 27 according to the flow of water.

<Other changes>

It is possible to prevent water from flowing out through the opening 206 in addition to the waterproofing wall portion 210 in the above embodiment, the waterproofing wall portion 210A in the first modification example, and the waterproofing wall portion 210B in the second modification example As the wall portion, for example, various waterproof wall portions 210C to 210I shown in Fig. 9 may be provided in association with the opening portion 206. [

For example, as shown in Fig. 9 (a), the waterproof wall portion 210C surrounding the opening 206 with the upper wall 211, the left wall 213 and the right wall 214 without the upper wall 212, . 9 (b), the left wall 213 and the right wall 214 are provided with the lower wall 211, the left wall 213 and the right wall 214, A waterproof wall portion 210D which is not extended to the upper end may be provided. As shown by the waterproof walls 210C and 210D in Figs. 9A and 9B, at least the lower side, the left side and the right side of the opening 206 are surrounded by the lower wall 211 for a short time Water can be prevented from flowing into the opening portion 206 from the side surface so that water is discharged through the opening portion 206 as compared with the waterproofing wall portion 210A composed only of the lower wall 211 as in the first modified example Can be additionally prevented.

Further, as shown in Fig. 9 (c), a waterproofing material having a "V" -shaped protrusion 215 protruding from the left wall 213 and the right wall 214 without the lower wall 211 The wall portion 210E may be provided. 9D and 9E, waterproof wall portions 210F and 210G each having an arc-shaped or U-shaped protruding portion 216 that is not a "V" -shaped may be provided have. Further, as shown in Fig. 9 (f), a waterproof wall portion 210H constituted by only the "V" -shaped protrusion 215 may be provided. Furthermore, as shown in Fig. 9 (g), a waterproof wall portion 210I constituted only by an arc-shaped or U-shaped protrusion 216 may be provided.

Furthermore, in the above embodiment, the water channel forming member 26 extends upwardly to the position of the balance ring 22, and the portion of the water channel forming member 26, which is closer to the upper side than the filter unit 27, It served as a baffle. However, the upper portion of the water channel forming member 26 does not exert the function of the reflux channel 25, and therefore can be removed.

Furthermore, in the above embodiment, although the outer tub 20 and the washing and dewatering tub 21 are inclined forward, they may not be inclined.

The automatic washing machine 1 of the above embodiment does not have a clothes drying function, but the present invention can be applied to a fully automatic washing machine having a drying function.

In addition, the embodiments of the present invention can appropriately carry out various modifications within the scope of the technical idea described in the claims.

21: washing and dehydrating tank; 21a: My main wall; 23: Pulsater; 25: reflux channel; 26: a channel forming member; 27: filter unit; 201: filter mounting portion; 202: lower support shaft (support shaft); 206: opening; 210: waterproof wall portion (wall portion); 210A to 210I: waterproof wall portion (wall portion); 215: protrusion; 216: protrusion.

Claims (4)

A laundry dewatering tank for containing the laundry;
A pulsator disposed freely rotatably on the bottom of the washing and dewatering vessel;
A reflux passage provided at a side portion of the washing and dewatering vessel and allowing water flowing through the pulsator to pass therethrough;
A water channel forming member which is a resin forming the reflux channel between the inner peripheral wall and the inner peripheral wall of the washing and dewatering tank;
A filter mounting portion formed on the water channel forming member; And
Water introduced into the washing and dewatering tank through the circulation passage and water flowing through the inner peripheral wall by the water stream generated through rotation of the pulsator, A filter unit for collecting the seams and the like; And,
The filter mounting portion includes: a support shaft constituting a rotation axis of the filter unit; And an opening formed behind the support shaft and communicating with the reflux channel; / RTI &gt;
Wherein a wall portion for preventing water from flowing out through the opening is formed on a surface of the water channel forming member facing the reflux channel toward the inner circumferential wall side. The method according to claim 1,
Wherein the wall portion surrounds at least the lower side, left side, and right side of the opening portion in three directions. 3. The method of claim 2,
And a gap is formed between the wall portion and the inner peripheral wall. 4. The method according to any one of claims 1 to 3,
Wherein the wall portion includes a protrusion having a central portion protruding further toward the upstream side of the return flow passage than both end portions in the left and right direction of the opening portion.

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