WO2020037936A1

WO2020037936A1 - Drain valve for washing machine, and washing machine

Info

Publication number: WO2020037936A1
Application number: PCT/CN2019/070075
Authority: WO
Inventors: 伍亚; 李章京; 蒋元慧; 熊力宁
Original assignee: 无锡小天鹅电器有限公司
Priority date: 2018-08-23
Filing date: 2019-01-02
Publication date: 2020-02-27
Also published as: CN208884217U

Abstract

A drain valve (30) for a washing machine (1), and a washing machine (1), the drain valve (30) comprising: a valve body (100) and a valve plug (200); the valve plug (200), when located at a first position, separating a first drain port (110) from a third drain port (130), and separating a second drain port (120) from the third drain port (130), and the valve plug (200), when located at the second position, communicating the first drain port (110) with the third drain port (130) and communicating the second drain port (120) with the third drain port (130).

Description

Drain valve and washing machine for washing machine

Cross-reference to related applications

This application is based on a Chinese patent application with an application number of 201821372144.X and an application date of August 23, 2018, and claims the priority of the Chinese patent application. The entire content of the Chinese patent application is incorporated herein by reference.

Technical field

The present invention relates to the technical field of electrical appliance manufacturing, and in particular, to a drain valve for a washing machine and a washing machine having the same.

Background technique

Due to the structure of the inner and outer tubs of the pulsator automatic washing machine, dirt is easily formed inside and breed bacteria. After the laundry is washed, dirt easily attaches to the clothes. For this reason, non-porous inner bucket pulsator washing machines have appeared. This kind of washing machine puts the laundry in the inner bucket, and the washing water is sealed in the inner bucket and the drain valve, between the inner and outer buckets. No water; during dehydration, most of the water directly flows from the inner bucket into the drain valve and is discharged into the environment, while a small part of the water in the clothes will enter the upper side of the inner bucket under the action of centrifugal force, along the water guide cover and the inner wall of the inner bucket. The water-conducting cavity flows between the inner and outer tubs, and is then discharged into the environment through a drain valve, and the laundry dehydration process is finally completed.

However, in the related art non-porous inner bucket pulsator washing machine, during the washing process, when the pulsator rotates, a small part of the water will enter the upper side of the inner bucket due to the centrifugal force and flow into the water guiding cavity between the water guide cover and the inner wall of the inner bucket. Between the inner and outer tubs, and then drained into the environment through the drain valve, the direct waste of washing water is caused, and the user is misunderstood that there is a “leakage” phenomenon in the washing process.

Summary of the Invention

The present invention aims to solve at least one of the technical problems existing in the prior art. For this reason, the present invention proposes a drain valve for a washing machine, which can prevent water leakage during washing.

The invention also proposes a washing machine having the drain valve for a washing machine.

According to an embodiment of the first aspect of the present invention, a drain valve for a washing machine is provided. The drain valve for a washing machine includes a valve body having a first drain port, a second drain port, and a third A drain plug; the valve plug is movably provided on the valve body between a first position and a second position, and the valve plug separates the first drain port and the valve when the valve plug is in the first position; The third drainage opening separates the second drainage opening and the third drainage opening, and the valve plug communicates with the first drainage opening and the third drainage opening and communicates with the third drainage opening when the valve plug is in the second position; The second drainage port and the third drainage port.

According to the drain valve for a washing machine according to an embodiment of the present invention, when the washing machine is in a washing state, the valve plug is in the first position, and the valve plug separates the first drain port and the third drain port and separates the second drain port and the third drain port. The water in the drain outlet, the inner tub and the outer tub are sealed. Therefore, the water in the outer tub and the inner tub cannot be discharged through the drain valve, which reduces the direct waste of washing water and avoids water leakage during the washing process.

According to some specific embodiments of the present invention, the first drainage port is an outer tub drainage port, the second drainage port is an inner tub drainage port, the third drainage port is an external drainage port, and the first position is closed. Position and the second position is an open position.

According to some specific embodiments of the present invention, when the valve plug is in the closed position, the outer tub drain and the inner tub drain are separated.

According to some specific examples of the present invention, a sealing surface is configured in the valve body, the sealing surface has an outer bucket water hole and an inner bucket water hole, and the outer bucket drain port communicates with the outer bucket water hole through the outer bucket water hole. The external drainage port communicates with the external drainage port through the internal drainage hole; when the valve plug is in the closed position, it is pressed against the sealing surface and closes the external tub to allow water Hole and the inner bucket water hole, the valve plug is separated from the sealing surface and the outer bucket water hole and the inner bucket water hole are opened when the valve plug is in the open position.

Further, the valve plug is provided with an inner seal groove and an outer seal groove surrounding the outside of the inner seal groove; when the valve plug is located in the closed position, the inner barrel water hole is sealed at The inner seal groove and the outer bucket water hole are sealed in the outer seal groove.

Further, the outer barrel water-passing hole includes a plurality of arc-shaped segments arranged at intervals around the outside of the inner barrel water-passing hole.

Further, the depth of the outer seal groove is greater than the depth of the inner seal groove.

According to some specific examples of the present invention, the valve body has an outer bucket drainage channel, an inner bucket drainage channel, and an external drainage channel, and the outer bucket drainage channel communicates with the outer bucket drainage port and the outer bucket water hole, and An inner bucket drainage channel communicates with the inner bucket drainage port and the inner bucket water hole, and the outer drainage channel connects the outer bucket water hole with the outer drainage hole and connects the inner bucket water hole with the outer drainage hole. At least a part of the valve plug is disposed in the external drainage channel.

According to some specific embodiments of the present invention, the axial direction of the outer tub drain opening is arranged in the up-down direction and the opening faces upward, and the axial direction of the external drain opening is arranged in the up-down direction and the opening faces downward. The axial direction is arranged along the horizontal direction and is perpendicular to the plane where the central axis of the outer tub drain and the central axis of the external drain are located.

According to some specific embodiments of the present invention, the valve body includes: a valve housing, the outer barrel drainage port, the inner barrel drainage port, and the external drainage port are provided on the valve casing; a valve cover, the valve cover The valve housing is detachably mounted, and the valve plug is mounted on the valve cover and is partially sandwiched between the valve cover and the valve housing.

According to some specific examples of the present invention, the valve plug has an elastic member that often pushes the valve plug toward the closed position.

According to an embodiment of the second aspect of the present invention, a washing machine is provided. The washing machine includes: an outer tub; an inner tub rotatably provided in the outer tub; according to an embodiment of the first aspect of the present invention In the drain valve for a washing machine, the outer tub drain is in communication with the outer tub and the inner tub drain is in communication with the inner tub.

The washing machine according to the present invention has the advantage of not leaking water during the washing process by using the drain valve for the washing machine according to the embodiment of the first aspect of the present invention.

According to some specific embodiments of the present invention, a water outlet is provided on a peripheral wall and / or a bottom wall of the inner barrel, and a water guide cover covering the water outlet is provided on an inner peripheral wall surface of the inner barrel. A water inlet is provided and defines a water guiding cavity that communicates with the water inlet and the water outlet. The liquid that rises due to the centrifugal force of the inner tub enters the water guiding cavity through the water inlet and passes through the water outlet. The spout is discharged to the outer tub.

According to some specific embodiments of the present invention, the height of the outer tub is smaller than the height of the inner tub.

According to an embodiment of the third aspect of the present invention, a drain valve for a washing machine is provided. The drain valve for a washing machine includes a valve body having an outer tub drain, an inner tub drain, and an external drain. A valve plug which is movably provided on the valve body between an open position and a closed position, the valve plug separating the outer tub drain port and the external drain port when the valve plug is in the closed position, and The inner bucket drain and the external drain are separated, and the valve plug communicates with the external bucket drain and the external drain when the valve plug is in the open position, and connects the inner bucket drain and the external drain.

According to the drain valve for a washing machine according to the embodiment of the present invention, when the washing machine is in a washing state, the valve plug is in the closed position, the valve plug divides the outer tub drain port and the outer drain port and separates the inner tub drain port and the outer drain port, the inner tub. The water in the outer tub and the inner tub are sealed. Therefore, the water in the outer tub and the inner tub cannot be discharged through the drain valve, which reduces the direct waste of washing water and avoids water leakage during the washing process.

According to an embodiment of the fourth aspect of the present invention, a washing machine is provided. The washing machine includes an outer tub, an inner tub rotatably provided in the outer tub, and an embodiment of the third aspect of the present invention. In the drain valve for a washing machine, the outer tub drain is in communication with the outer tub and the inner tub drain is in communication with the inner tub.

The washing machine according to the present invention has the advantages of not leaking water during the washing process by using the drain valve for the washing machine according to the embodiment of the third aspect of the present invention.

Additional aspects and advantages of the present invention will be given in part in the following description, and part of them will become apparent from the following description, or be learned through the practice of the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS

The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

FIG. 1 is a sectional view of a washing machine according to an embodiment of the present invention.

FIG. 2 is a schematic structural diagram of a drain valve of a washing machine according to an embodiment of the present invention.

FIG. 3 is a sectional view of a drain valve of a washing machine according to an embodiment of the present invention.

FIG. 4 is a partial structural diagram of a valve body of a drain valve of a washing machine according to an embodiment of the present invention.

5 is a schematic structural diagram of a valve plug of a drain valve of a washing machine according to an embodiment of the present invention.

Reference signs:

Washing machine 1,

Outer barrel 10,

Inner bucket 20, water outlet 21, water guide cover 22, water inlet 23, water guide cavity 24,

Drain valve 30,

Valve body 100, outer bucket drain 110, inner bucket drain 120, external drain 130, sealing surface 140, outer bucket water hole 141, inner bucket water hole 142, outer bucket drainage channel 150, inner bucket drainage channel 160, external drainage Channel 170, valve housing 180, valve cover 190,

The valve plug 200, the inner seal groove 210, the outer seal groove 220, and the elastic member 230.

detailed description

Hereinafter, embodiments of the present invention will be described in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it should be understood that the terms "center", "upper", "down", "vertical", "horizontal", "top", "bottom", "inside", "outside", "outside" The azimuth or position relationship indicated by “axial”, “radial”, “circumferential”, etc. is based on the azimuth or position relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply the indicated The device or element must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In the description of the present invention, unless otherwise stated, "a plurality" means two or more.

In the description of the present invention, it should be noted that the terms "installation", "connected", and "connected" should be understood in a broad sense unless otherwise specified and limited. For example, they may be fixed connections or removable. Connected or integrated; it can be mechanical or electrical; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood on a case-by-case basis.

A washing machine 1 according to an embodiment of the present invention will be described below with reference to the drawings. The washing machine 1 may be a pulsator washing machine, for example, a non-perforated inner bucket pulsator washing machine.

As shown in FIGS. 1-5, a washing machine 1 according to an embodiment of the present invention includes an outer tub 10, an inner tub 20, and a drain valve 30.

First, a drain valve 30 according to an embodiment of the present invention will be described with reference to the drawings. The drain valve 30 according to the embodiment of the present invention includes a valve body 100 and a valve plug 200.

The valve body 100 has a first drainage port, a second drainage port, and a third drainage port. The valve plug 200 is movably provided to the valve body 100 between the second position and the first position.

When the valve plug 200 is located in the first position, the valve plug 200 separates the first and third drainage ports and separates the second and third drainage ports. At this time, between the first and third drainage ports There is no communication, and there is no communication between the second drainage port and the third drainage port.

When the valve plug 200 is in the second position, the valve plug 200 communicates with the first drainage port and the third drainage port and communicates with the second drainage port and the third drainage port. At this time, between the first drainage port and the third drainage port And the second drainage port is in communication with the third drainage port.

In the washing machine 1 according to the embodiment of the present invention, the inner tub 20 is rotatably provided in the outer tub 10. The first drainage port is in communication with the outer tub 10, and the second drainage port is in communication with the inner tub 20.

According to the drain valve 30 and the washing machine 1 having the same according to the embodiment of the present invention, when the washing machine 1 is in a washing state, the valve plug 200 is in the first position, and the valve plug 200 separates the first drain port and the third drain port and separates the first drain port and the third drain port. In the second and third drains, the water in the inner tub 20 and the outer tub 10 are sealed. Therefore, the water in the outer tub 10 and the inner tub 20 cannot be discharged through the drain valve 30, thereby reducing the direct waste of washing water. Avoid water leakage during washing. When the washing machine 1 is in the dehydration state, the valve plug 200 is in the second position. The valve plug 200 communicates with the first drainage port and the third drainage port, and communicates with the second drainage port and the third drainage port. The inner tub 20 and the outer tub 10 All the water in it can be discharged through the drain valve 30.

In some specific embodiments of the present invention, as shown in FIG. 1, the first drainage port may be an outer barrel drainage port 110, the second drainage port may be an inner barrel drainage port 120, and the third drainage port may be an external drainage port 130. In addition, the first position is a closed position and the second position is an open position. When the valve plug 200 is in the closed position (that is, the first position), the valve plug 200 separates the outer tub drain 110 and the external drain 130 In addition, the inner tub drain 120 and the outer drain 130 are separated, and the water in the inner tub 20 and the outer tub 10 is sealed. Therefore, the water in the outer tub 10 and the inner tub 20 cannot be discharged through the drain valve 30, reducing the washing water. Direct waste to avoid water leakage during washing. When the washing machine 1 is in the dehydration state, the valve plug 200 is in the open position (ie, the second position). The valve plug 200 communicates with the outer tub drainage port 110 and the outer drainage port 130, and communicates with the inner tub drainage port 120 and the outer drainage port 130. Water in the inner tub 20 and the outer tub 10 can be discharged through the drain valve 30.

In some specific embodiments of the present invention, as shown in FIG. 1, the height of the outer tub 10 is smaller than the height of the inner tub 20. A water outlet 21 is provided on the peripheral wall and / or the bottom wall of the inner tub 20, and a water guide cover 22 covering the water outlet 21 is provided on the inner peripheral wall surface of the inner barrel 20. The water guide 22 is provided with a water inlet 23 and defines a water inlet. 23 is a water-conducting cavity 24 that communicates with the water outlet 21, and the liquid rising in the inner tub 20 due to the centrifugal force enters the water-conducting cavity 24 through the water inlet 23 and is discharged to the outer tub 10 through the water outlet 21.

Specifically, when the washing machine 1 is dehydrated, the inner tub 20 rotates, that is, the water guiding cover 22 rotates with the inner tub 20, and the liquid in the inner tub 20 moves upward under the action of centrifugal force, and enters the water guiding chamber 24 through the water inlet 23, The liquid in the water chamber 24 is guided to the water outlet 21 by the water guide 22, and is discharged to the outer tub 10 through the water outlet 21.

According to the washing machine 1 of the embodiment of the present invention, the height of the outer tub 10 is greatly reduced to realize a “single tub” structure, so that the water in the inner tub 20 is more water-saving during washing, and further provided by the inner peripheral wall surface of the inner tub 20 The water guide cover 22 is provided with a water inlet 23 on the water guide cover 22 and a water outlet 21 on the peripheral wall and / or the bottom wall of the inner tub 20. The water in the inner tub 20 rises under the action of centrifugal force during dehydration and passes through the water inlet 23. It enters the water guide 22 and flows to the water outlet 21 under the guidance of the water guide 22, and is discharged to the outer tub 10 through the water outlet 21. Therefore, in the case of simplifying the outer tub 10 to simplify the structure, increase the capacity, reduce the growth of dirt and bacteria, and save water, the dehydration effect can be improved at the same time.

In addition, the water guide cover 22 is connected to the inner tub 20, and there is no need to provide an additional structure on the box body or to set the box body as an internal and external double-layer structure to realize water conduction during the dehydration process, so that the material selection of the box body is no longer necessary. Limited, materials such as sheet metal can be used to greatly improve the appearance.

The water outlet 21 may be provided on the peripheral wall of the inner tub 20, or may be provided on the bottom wall of the inner tub 20, or the water outlet 21 may be provided on the peripheral wall and the bottom wall. Specifically, the water outlet 21 is provided on the peripheral wall of the inner tub 20, so that the water guide 22 covers the water outlet 21, and the lower end of the water guide 22 is only connected to the peripheral wall of the inner bucket 20, which is beneficial to the water guide 22 and the peripheral wall of the inner bucket 20. Seal. Of course, the water outlet 21 in the present invention can also be provided on the bottom wall of the inner tub 20, and the water guide 22 covers the water outlet 21, which is helpful to improve the dehydration efficiency during dehydration, has a good dehydration effect, and can effectively reduce water from the outlet. Splash in the spout 21. The water outlet 21 is provided on the peripheral wall and the bottom wall, which is not only favorable for the sealing of the water guide cover 22 and the peripheral wall of the inner tub 20, but also for improving the dehydration efficiency during dehydration, and can effectively prevent water from splashing out of the water outlet 21.

In some specific embodiments of the present invention, when the valve plug 200 is in the closed position, the valve plug 200 separates the outer bucket drain 110 and the inner bucket drain 120, that is, there is no communication between the outer bucket drain 110 and the inner bucket drain 120. In this way, during the washing process, the inner tub 20 and the outer tub 10 cannot communicate with each other through the drain valve 30. Conversely, if the inner tub 20 and the outer tub 10 can communicate with each other through the drain valve 30, the water level in the two will be flat. The height of the inner tub 20 is lower than that of the inner tub 20. Therefore, the water in the outer tub 10 may overflow. According to the drain valve 30 of the embodiment of the present invention, the outer tub drain 110 and the inner tub drain 120 are separated by the valve plug 200 in the closed position. Avoid overflow of the outer tub 10 during the washing process.

In order to ensure the sealing effect of the outer barrel drainage opening 110, the inner barrel drainage outlet 120 and the external drainage outlet 130 when the valve plug 200 is in the closed position, and to realize the automatic reset function, as shown in FIG. 3, the valve plug 200 has an elastic member 230 The elastic member 230 often pushes the valve plug 200 to the closed position. For example, the elastic member 230 may be a spring sleeved on the valve plug 200. One end of the spring stops against the valve body 100 and the other end stops against the valve plug 200. .

In some specific embodiments of the present invention, as shown in FIG. 3 and FIG. 4, a sealing surface 140 is configured in the valve body 100. The sealing surface 140 has an outer barrel water hole 141 and an inner barrel water hole 142, and an outer barrel water outlet 110 is communicated with the external drainage port 130 through the outer barrel water hole 141, and the inner barrel drainage 120 is communicated with the external drain 130 through the inner barrel water hole 142.

When the valve plug 200 is in the closed position, it is pressed against the sealing surface 140. The valve plug 200 closes the outer bucket water hole 141 and the inner bucket water hole 142, and the water flowing from the outer bucket drain hole 110 cannot pass through the outer bucket water hole. 141 flows to the external drainage outlet 130, and the water flowing in from the inner barrel drainage opening 120 cannot flow to the external drainage outlet 130 through the inner barrel water passing hole 142.

When the valve plug 200 is in the open position, the valve plug 200 is detached from the sealing surface 140, and the outer bucket water hole 141 and the inner bucket water hole 142 are opened. The water flowing in from the outer bucket water outlet 110 can pass through the outer bucket water hole 141. The water flows into the external drainage outlet 130, and the water flowing in from the internal barrel drainage opening 120 can flow to the external drainage outlet 130 through the internal barrel water hole 142.

Further, as shown in FIG. 5, the surface of the valve plug 200 facing the sealing surface 140 is provided with an inner sealing groove 210 and an outer sealing groove 220, and the inner sealing groove 210 is located on the surface of the valve plug 200 facing the sealing surface 140. The outer seal groove 220 surrounds the outer side of the inner seal groove 210 and has a circular ring shape.

When the valve plug 200 is in the closed position, the valve plug 200 is pressed against the sealing surface 140, the inner seal groove 210 is directly opposite the inner bucket water hole 142, the inner bucket water hole 142 is sealed in the inner seal groove 210, and the outer seal The groove 220 is directly connected to the outer bucket water hole 141, and the outer bucket water hole 141 is sealed in the outer seal groove 220. As a result, the sealing effect of the valve plug 200 can be improved, and leakage can be prevented, thereby improving the reliability of preventing leakage and overflowing.

Among them, in order to improve the sealing effect of the outer seal groove 220 to the outer bucket water hole 141, the depth of the outer seal groove 220 is greater than the depth of the inner seal groove 210, and the inner bucket water hole 142 is a ring arranged concentrically with the sealing surface 140 Shape, and the outer bucket water passing hole 141 surrounds the outer side of the inner bucket water passing hole 142 and includes a plurality of arc-shaped segments arranged at intervals.

In some specific examples of the present invention, as shown in FIG. 2 and FIG. 3, in order to realize the predetermined flow paths of the water channels in the drain valve 30, the valve body 100 has an outer bucket drainage channel 150, an inner bucket drainage channel 160, and external drainage. Channel 170, the outer bucket drainage channel 150 communicates with the outer bucket drainage port 110 and the outer bucket water hole 141, the inner bucket drainage channel 160 communicates with the inner bucket water outlet 120 and the inner bucket water hole 142, and the external drainage channel 170 communicates with the outer bucket water hole 141 and The external drainage port 130 is connected to the inner tub water hole 142 and the external drainage port 130. At least a part of the valve plug 200 is disposed in the external drainage channel 170.

Specifically, in order to facilitate the installation of the drain valve 30 in the washing machine 1, the axial direction of the outer tub drain opening 110 is provided in the up-down direction and the opening faces upward, and the outer tub drainage channel 150 is L-shaped in a vertical plane. The external drainage opening 130 is arranged in the axial direction in the up-down direction and the opening faces downward. The upper space of the external drainage passage 170 is larger than the lower space, so that the part of the valve plug 200 is placed in the upper space of the external drainage passage 170. The axial direction of the inner bucket drainage port 120 is horizontally arranged, and the axial direction of the inner bucket drainage port 120 is perpendicular to the plane where the central axis of the outer bucket drainage port 110 and the central axis of the outer drainage port 130 are located. The inner bucket drainage channel 160 is in a horizontal plane. L-shaped.

In some specific embodiments of the present invention, as shown in FIGS. 2 and 3, the valve body 100 includes a valve housing 180 and a valve cover 190.

The outer barrel drainage opening 110, the inner barrel drainage outlet 120, and the external drainage outlet 130 are provided in the valve housing 180. The valve cover 190 is detachably mounted on the valve housing 180, for example, the two can be connected by a thread. The valve plug 200 is mounted on the valve cover 190, and a part of the valve plug 200 is clamped between the valve cover 190 and the valve housing 180. As a result, not only the installation and positioning of the valve plug 200 can be achieved, but also the removal and installation of the drain valve 30 is more convenient.

The valve body 100 has an outer barrel drainage port 110, an inner barrel drainage port 120, and an external drainage port 130. The valve plug 200 is movably provided to the valve body 100 between an open position and a closed position.

When the valve plug 200 is in the closed position, the valve plug 200 separates the outer bucket drainage port 110 and the outer drainage port 130 and separates the inner bucket drainage port 120 and the outer drainage port 130. At this time, the outer bucket drainage port 110 and the outer drainage port 130 are separated. There is no communication between them, and there is no communication between the inner barrel drainage port 120 and the external drainage port 130.

When the valve plug 200 is in the open position, the valve plug 200 communicates with the outer bucket drain 110 and the outer drain 130 and connects the inner bucket drain 120 and the outer drain 130. At this time, the outer bucket drain 110 and the outer drain 130 It communicates with each other, and the inner bucket drainage port 120 and the external drainage port 130 communicate with each other.

In the washing machine 1 according to the embodiment of the present invention, the inner tub 20 is rotatably provided in the outer tub 10. The outer tub drain 110 is in communication with the outer tub 10, and the inner tub drain 120 is in communication with the inner tub 20.

According to the drain valve 30 and the washing machine 1 having the same according to the embodiment of the present invention, when the washing machine 1 is in a washing state, the valve plug 200 is in the closed position. The valve plug 200 separates the outer tub drain 110 and the outer drain 130 and separates the inner tub. The water outlet 120 and the external water outlet 130 are sealed, and the water in the inner tub 20 and the outer tub 10 is sealed. Therefore, the water in the outer tub 10 and the inner tub 20 cannot be discharged through the drain valve 30, thereby reducing the direct waste of washing water. Avoid water leakage during washing. When the washing machine 1 is in the dehydration state, the valve plug 200 is in the open position. The valve plug 200 communicates with the outer tub drain 110 and the outer drain 130 and connects the inner tub drain 120 and the outer drain 130. The inner tub 20 and the outer tub 10 All the water in it can be discharged through the drain valve 30.

Specifically, when the washing machine 1 is dehydrated, the inner tub 20 rotates, that is, the water guiding cover 22 rotates with the inner tub 20, and the liquid in the inner tub 20 moves upward under the action of centrifugal force, and enters the water guiding chamber 24 through the water inlet 23, and enters the water guiding chamber 24. The liquid in the water chamber 24 is guided to the water outlet 21 by the water guide 22, and is discharged to the outer tub 10 through the water outlet 21.

Other configurations and operations of the washing machine 1 and the drain valve 30 thereof according to the embodiment of the present invention are known to those skilled in the art, and will not be described in detail here.

In the description of this specification, the description with reference to the terms “one embodiment”, “some embodiments”, “exemplary embodiments”, “examples”, “specific examples”, or “some examples”, etc., means in combination with the implementation The specific features, structures, materials, or characteristics described in the examples or examples are included in at least one embodiment or example of the present invention. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirit of the present invention, The scope of the invention is defined by the claims and their equivalents.

Claims

A drain valve (30) for a washing machine, comprising:

A valve body (100) having a first drainage port, a second drainage port, and a third drainage port;

A valve plug (200), which is movably provided between the first position and the second position on the valve body (100), when the valve plug (200) is located in the first position The first drainage port and the third drainage port are separated, and the second drainage port and the third drainage port are separated, and the valve plug (200) communicates with the first drainage when the second position is located in the second position. And the third drainage port and communicate with the second drainage port and the third drainage port.
The drain valve (30) for a washing machine according to claim 1, wherein the first drain port is an outer tub drain port (110), and the second drain port is an inner tub drain port (120), The third drainage port is an external drainage port (130), the first position is a closed position and the second position is an open position.
The drain valve (30) for a washing machine according to claim 2, wherein the valve plug (200) separates the outer tub drain (110) and the inner tub drain when the valve plug (200) is in the closed position. (120).
The drain valve (30) for a washing machine according to claim 2, characterized in that a sealing surface (140) is configured in the valve body (100), and the sealing surface (140) has an outer barrel water hole (141) and an inner bucket water drainage hole (142), the outer bucket drainage hole (110) communicates with the external drainage hole (130) through the outer bucket water drainage hole (141), and the inner bucket drainage hole (120) ) Communicating with the external drainage opening (130) through the inner barrel water passing hole (142);

When the valve plug (200) is located in the closed position, the valve plug (200) is pressed against the sealing surface (140) and closes the outer barrel water hole (141) and the inner barrel water hole (142). (200) is separated from the sealing surface (140) when the position is in the open position, and the outer bucket water hole (141) and the inner bucket water hole (142) are opened.
The drain valve (30) for a washing machine according to claim 4, characterized in that the valve plug (200) is provided with an inner sealing groove (210) and surrounds the inner sealing groove (210) Outer seal groove (220) on the outside;

When the valve plug (200) is in the closed position, the inner bucket water passage (142) is sealed in the inner seal groove (210) and the outer bucket water passage (141) is sealed in The outer seal groove (220) is described.
The drain valve (30) for a washing machine according to claim 5, characterized in that the outer tub water passing hole (141) comprises a plurality of spaced-apart surroundings of the inner tub water vent (142). Arc segment.
The drain valve (30) for a washing machine according to claim 5, wherein a depth of the outer seal groove (220) is greater than a depth of the inner seal groove (210).
The drain valve (30) for a washing machine according to claim 4, characterized in that the valve body (100) has an outer tub drainage channel (150), an inner tub drainage channel (160), and an external drainage channel (170) ),

The outer bucket drainage channel (150) communicates with the outer bucket drainage port (110) and the outer bucket water passage hole (141), and the inner bucket drainage channel (160) communicates with the inner bucket drainage port (120) and the The inner bucket water passing hole (142), the external drainage channel (170) connecting the outer bucket water passing hole (141) and the external drainage port (130), and connecting the inner bucket water passing hole (142) and the The external drainage port (130), and at least a part of the valve plug (200) is provided in the external drainage channel (170).
The drain valve (30) for a washing machine according to any one of claims 2 to 8, characterized in that the axial direction of the outer tub drain (110) is provided in the up-down direction and the opening faces upward, and The axial direction of the external drainage outlet (130) is arranged in the up-down direction and the opening is directed downward. The axial direction of the inner barrel drainage (120) is set in the horizontal direction and perpendicular to the central axis and the center of the outer barrel drainage (110). The plane on which the central axis of the external drainage opening (130) is located.
The drain valve (30) for a washing machine according to any one of claims 2-8, wherein the valve body (100) comprises:

A valve casing (180), the outer barrel drainage port (110), the inner barrel drainage port (120) and the external drainage port (130) are provided in the valve casing (180);

A valve cover (190), the valve cover (190) is detachably mounted on the valve housing (180), the valve plug (200) is mounted on the valve cover (190), and partly clamped on the valve cover (190) Between a valve cover (190) and the valve housing (180).
The drain valve (30) for a washing machine according to any one of claims 2-8, characterized in that the valve plug (200) has a function of always pushing the valve plug (200) to the closed position Elastic member (230).
A washing machine (1), comprising:

Outer barrel (10);

An inner barrel (20), which is rotatably disposed in the outer barrel (10);

The drain valve (30) for a washing machine according to any one of claims 1-11, the first drain port is in communication with the outer tub (10) and the second drain port is in communication with the inner tub ( 20) Connect.
The washing machine (1) according to claim 12, characterized in that a water outlet (21) is provided on a peripheral wall and / or a bottom wall of the inner tub (20), and an inner peripheral wall surface of the inner tub (20) is provided A water guide cover (22) covering the water outlet (21). The water guide cover (22) is provided with a water inlet (23) and is limited to the water inlet (23) and the water outlet (21). ) A communicating water guiding chamber (24), and the liquid rising in the inner tub (20) due to the centrifugal force enters the water guiding chamber (24) through the water inlet (23) and passes through the water outlet (21) Discharge to the outer tub (10).
The washing machine (1) according to claim 12, wherein the height of the outer tub (10) is smaller than the height of the inner tub (20).
A drain valve (30) for a washing machine, comprising:

A valve body (100) having an outer barrel drainage port (110), an inner barrel drainage port (120), and an external drainage port (130);

A valve plug (200) is movably provided on the valve body (100) between an open position and a closed position, and the valve plug (200) separates the valve plug when it is in the closed position An outer bucket drain (110) and the outer drain (130) separate the inner bucket drain (120) and the outer drain (130), and the valve plug (200) communicates when the valve plug is in the open position The outer bucket drainage port (110) and the outer drainage port (130) communicate with the inner bucket drainage port (120) and the outer drainage port (130).
The drain valve (30) for a washing machine according to claim 15, wherein the valve plug (200) separates the outer tub drain (110) and the inner tub drain when the valve plug (200) is in the closed position (120).
The drain valve (30) for a washing machine according to claim 15, characterized in that a sealing surface (140) is configured in the valve body (100), and the sealing surface (140) has an outer tub water hole (141) and an inner bucket water drainage hole (142), the outer bucket drainage hole (110) communicates with the external drainage hole (130) through the outer bucket water drainage hole (141), and the inner bucket drainage hole (120) ) Communicating with the external drainage opening (130) through the inner barrel water passing hole (142);

When the valve plug (200) is located in the closed position, the valve plug (200) is pressed against the sealing surface (140) and closes the outer barrel water hole (141) and the inner barrel water hole (142). (200) is separated from the sealing surface (140) when the position is in the open position, and the outer bucket water hole (141) and the inner bucket water hole (142) are opened.
The drain valve (30) for a washing machine according to claim 17, wherein the valve plug (200) is provided with an inner sealing groove (210) and surrounds the inner sealing groove (210) Outer seal groove (220) on the outside;

When the valve plug (200) is in the closed position, the inner bucket water passage (142) is sealed in the inner seal groove (210) and the outer bucket water passage (141) is sealed in The outer seal groove (220) is described.
The drain valve (30) for a washing machine according to claim 18, characterized in that the outer tub water passing hole (141) comprises a plurality of spaced-apart surrounding the outer tub water vent (142). Arc segment.
The drain valve (30) for a washing machine according to claim 18, wherein a depth of the outer seal groove (220) is greater than a depth of the inner seal groove (210).
The drain valve (30) for a washing machine according to claim 17, characterized in that the valve body (100) has an outer tub drain channel (150), an inner tub drain channel (160), and an external drain channel (170) ),

The outer bucket drainage channel (150) communicates with the outer bucket drainage port (110) and the outer bucket water passage hole (141), and the inner bucket drainage channel (160) communicates with the inner bucket drainage port (120) and the The inner bucket water passing hole (142), the external drainage channel (170) connecting the outer bucket water passing hole (141) and the external drainage port (130), and connecting the inner bucket water passing hole (142) and the The external drainage port (130), and at least a part of the valve plug (200) is provided in the external drainage channel (170).
The drain valve (30) for a washing machine according to any one of claims 15-21, wherein an axial direction of the outer tub drain (110) is provided in an up-down direction and an opening faces upward, and The axial direction of the external drainage outlet (130) is arranged in the up-down direction and the opening is directed downward. The axial direction of the inner barrel drainage (120) is set in the horizontal direction and is perpendicular to the central axis and The plane on which the central axis of the external drainage opening (130) is located.
The drain valve (30) for a washing machine according to any one of claims 15-21, wherein the valve body (100) comprises:

A valve casing (180), the outer barrel drainage port (110), the inner barrel drainage port (120) and the external drainage port (130) are provided in the valve casing (180);

A valve cover (190), the valve cover (190) is detachably mounted on the valve housing (180), the valve plug (200) is mounted on the valve cover (190), and partly clamped on the valve cover (190) Between a valve cover (190) and the valve housing (180).
The drain valve (30) for a washing machine according to any one of claims 15-21, characterized in that the valve plug (200) has a function of always pushing the valve plug (200) to the closed position Elastic member (230).
A washing machine (1), comprising:

Outer barrel (10);

An inner barrel (20), which is rotatably disposed in the outer barrel (10);

The drain valve (30) for a washing machine according to any one of claims 15-24, the outer tub drain (110) communicates with the outer tub (10) and the inner tub drain (120) Communicate with the inner barrel (20).
The washing machine (1) according to claim 25, wherein a water outlet (21) is provided on a peripheral wall and / or a bottom wall of the inner tub (20), and an inner peripheral wall surface of the inner tub (20) is provided A water guide cover (22) covering the water outlet (21). The water guide cover (22) is provided with a water inlet (23) and is limited to the water inlet (23) and the water outlet (21). ) A communicating water guiding chamber (24), and the liquid rising in the inner tub (20) due to the centrifugal force enters the water guiding chamber (24) through the water inlet (23) and passes through the water outlet (21) Discharge to the outer tub (10).
The washing machine (1) according to claim 25, wherein the height of the outer tub (10) is smaller than the height of the inner tub (20).