WO2020238612A1

WO2020238612A1 - Washing machine

Info

Publication number: WO2020238612A1
Application number: PCT/CN2020/089769
Authority: WO
Inventors: 赵志强; 许升; 吕佩师
Original assignee: 青岛海尔滚筒洗衣机有限公司; 海尔智家股份有限公司
Priority date: 2019-05-28
Filing date: 2020-05-12
Publication date: 2020-12-03
Also published as: CN112011945B; CN112011945A

Abstract

Disclosed is a washing machine. An inner drum (1) of the washing machine is a container that is airtight during washing after an opening is fastened by a door cover (4), at least part of the inner drum (1) is a double-layer wall with a hollow interlayer, the inner drum (1) is provided with a flow channel passing through the double-layer wall and connecting the inside and the outside of the inner drum (1), and a valve for controlling the opening and closing of the flow channel is arranged in the hollow interlayer. The valve is arranged in the double-layer wall of the inner drum (1), so that the valve is controlled to be opened and penetrate the flow channel of the double-layer wall after a rotation speed of the inner drum (1) reaches a set value, thereby achieving the aim of executing washing machine drainage; in addition, when the washing machine normally executes washing and rinsing programs, the valve correspondingly seals the flow channel penetrating the double-layer wall, and the inner drum (1) can hold water and thus normally execute the washing and rinsing programs, so that in a washing process, laundry is only in contact with washing water in the sealed inner drum (1), preventing the scenario where washing water between the inner drum and an outer drum flows into the inner drum (1) and contaminates the laundry, and greatly improving the washing cleanliness of the washing machine.

Description

A washing machine

Technical field

The present invention belongs to the technical field of washing machines, and specifically relates to a washing machine with only a rotatable inner tub that can hold water, and more particularly to a valve structure applied to the above-mentioned washing machine.

Background technique

In the prior art, the drum washing machine generally includes an inner tube and an outer tube that are fitted with each other. The outer tube is sealed for holding water, and the inner tube is used to hold clothes, and the inner tube is rotated to beat and wash the clothes; Set dehydration holes so that the water in the outer tub flows into the inner tub through the dehydration holes to soak the clothes in the inner tub, the water in the inner tub flows out to the outer tub through the dehydration holes, and the moisture on the clothes in the inner tub is dehydrated when the inner tub rotates at a high speed The holes are drained to the outer tube to achieve the purpose of washing clothes.

However, because the inner and outer tubs are nested together, dirt is likely to accumulate between the inner and outer tubs during the use of the washing machine; at the same time, because the inner and outer tubs are nested together, users cannot clean the outer wall of the inner tub and the inner wall of the outer tub, which increases the bacteria inside the washing machine. , It reduces the washing efficiency of the washing machine and the cleanliness of the clothes after washing.

At the same time, in the above-mentioned existing washing machines, since the inner tub is sheathed with an outer tub, the washing process of the washing machine is to beat and wash the clothes through the rotation of the inner tub, so that the washing capacity of the washing machine is based on the inner tub, and the internal space utilization rate of the washing machine It is low and cannot expand the washing capacity of the washing machine on the existing basis.

In view of this, how to set up a washing machine to combine the inner and outer tubs so that the inner tub is set as a sealed container, which can not only contain water and clothes, but also rotate and beat the clothes for washing; at the same time, because the washing machine does not have an outer tub , Or the outer tub is integrated with the washing machine shell, which can also expand the inner tub of the washing machine to expand the washing capacity of the washing machine, which has become a research hotspot.

However, since the inner tub is not only used to hold washing water, but also rotates to beat and clean the tub underwear, how to provide a dehydration structure and a drainage structure suitable for the above-mentioned washing machine has become an urgent problem to be solved.

In view of the above technical defects, this application is hereby submitted.

Summary of the invention

The purpose of the present invention is to overcome the above-mentioned shortcomings in the prior art, and provide a washing machine, so that when the washing machine is in a drain or dehydration process, the inner drum is in a high-speed rotation state, so that the valve in the double wall gap of the inner drum is affected. It is opened by centrifugal force to solve the problem of draining the washing water in the inner cylinder.

In order to solve the technical problem and achieve the technical effect, the basic design idea of the technical scheme adopted by the present invention is:

A washing machine. The inner tube of the washing machine is a container whose opening is closed by a door cover and is closed during washing. At least part of the inner tube is a double wall with a hollow interlayer. The inner tube is provided with a through double wall and a connected inner tube The internal and external flow channels, the hollow interlayer is provided with a valve to control the on and off of the flow channel.

Furthermore, the valve arranged in the interlayer gap to control the on-off of the flow passage can also be arranged in any form of valve body structure in the prior art, such as: centrifugal valve, solenoid valve, mechanical method, hydraulic valve and so on.

Further, at least part of the side wall of the inner cylinder is composed of an inner wall and an outer wall separated by a gap, and the inner wall and the outer wall are respectively provided with through holes to form a flow channel connecting the inside and outside of the inner cylinder; preferably, The through holes provided on the inner layer wall and the outer layer wall are alternately arranged; further preferably, the through holes provided on the inner layer wall and the outer layer wall are arranged in sequence along the axis of the inner cylinder.

Further, the valve is installed in the gap between the inner wall and the outer wall. The valve is a centrifugal valve that is driven by the centrifugal force of the inner cylinder to generate displacement action to correspondingly block or open the through hole provided in the inner wall, and / Or through holes provided in the outer wall.

Further, the centrifugal valve includes a valve plug installed in the double-wall gap of the inner cylinder, and the outer wall of the inner cylinder is an inclined surface extending obliquely to the outside of the inner cylinder and forming an angle a with the axis of the inner cylinder; preferably, the inner cylinder The angle between the inner wall and the axis of the inner cylinder is b, and a is greater than b.

Further, the valve core extends in the direction parallel to the axis of the inner cylinder, and one end of the valve core is connected to the inner cylinder via an elastic member. The inner cylinder provides the valve core with a reset elastic force to return to the initial position; when the valve core is in the initial position, the valve core correspondingly blocks the inner The through hole of the layer wall and/or the outer wall; after the valve core is moved by the centrifugal force to overcome the reset elastic force, the valve core opens the through hole of the inner wall and/or the outer wall to make the inner cylinder communicate with the outside; preferably The gap between the double walls is provided with a limiting rib for limiting the rotation direction of the valve plug in the inner cylinder.

Further, the valve core is arranged in parallel with the outer wall on the side away from the inner cylinder, so that the valve core is in close contact with the outer wall and moves along the outer wall; preferably, the side of the valve core close to the inner cylinder and the inner wall The walls are arranged in parallel, so that the valve core is in close contact with the inner wall.

Further, the valve core includes a counterweight that generates centrifugal force by its own gravity as the inner cylinder rotates; the outer circumference of the counterweight is wrapped with a sealing layer that can produce elastic deformation and correspondingly block the through holes of the inner wall and/or the outer wall .

Furthermore, the inner cylinder is provided with a plurality of flow passages passing through the double wall and connecting the inside and outside of the inner cylinder, and each flow passage is arranged symmetrically with respect to the axis of the inner cylinder; each flow passage is respectively installed with a centrifugal device corresponding to the on and off of the flow passage. valve.

Further, any one of the outer wall and the inner wall is composed of a grid plate or a limit rod that provides a limit support for the valve core of the centrifugal valve, and the drain from the inner cylinder is arranged on the grid plate The hole or the gap on both sides of the limit rod is discharged.

Further, the inner wall constitutes a cylindrical structure with one end open and one end closed, and the outer wall is a cylindrical structure covering all the inner wall; or, the inner wall constitutes a cylindrical structure with one end open and one end closed, and the outer layer The wall covers the part of the cylindrical inner wall; or, the outer wall forms a cylindrical structure with one end open and one end closed, and the inner wall covers the cylindrical outer wall part.

Compared with the prior art washing machine, the washing machine of the present invention has the following beneficial effects:

By setting a valve in the double wall of the inner tub, the control valve opens after the rotation speed of the inner tub reaches the set value and penetrates the flow channel of the double wall to achieve the purpose of draining the washing machine; at the same time, washing and rinsing are performed normally in the washing machine. During the program, the valve correspondingly closes the flow passage through the double wall, so that the inner tub can hold water, and the washing and rinsing procedures are executed normally, so that the clothes only contact the washing water in the sealed inner tub during the washing process, avoiding the inner and outer tubs In the meantime, the washing water flows into the inner tub and pollutes the clothes, which greatly improves the cleanliness of the washing machine.

By setting the valve as a centrifugal valve, the centrifugal valve is controlled to open and penetrate the flow channel of the double wall after the inner drum speed reaches the set value, so as to achieve the purpose of draining the washing machine; at the same time, when the washing machine normally performs washing and rinsing procedures , Due to the low rotation speed of the inner cylinder and the small centrifugal force on the centrifugal valve, the centrifugal valve correspondingly closes the flow path through the double wall, so that the inner cylinder can be filled with water, and the washing and rinsing procedures are performed normally, so that the clothes only In contact with the washing water in the sealed inner tub, the washing water between the inner and outer tubs is prevented from flowing into the inner tub and polluting the clothes, and the washing cleanliness of the washing machine is greatly improved.

At the same time, the invention has a simple structure and significant effects, and is suitable for popularization and use.

In order to make the design concept of the technical solution of the present invention clearer and facilitate further understanding of the beneficial effects brought about by it, some specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

Description of the drawings

The accompanying drawings are used as a part of the present invention to provide a further understanding of the present invention. The exemplary embodiments and descriptions of the present invention are used to explain the present invention, but do not constitute an improper limitation of the present invention. Obviously, the drawings in the following description are only some embodiments, and for those of ordinary skill in the art, other drawings can be obtained from these drawings without creative work. In the attached picture:

Figure 1 is a schematic structural diagram of a washing machine in an embodiment of the present invention;

2 is a schematic diagram of the cross-sectional structure of the A-A section of FIG. 1 in the embodiment of the present invention;

Fig. 3 is an enlarged schematic structural view of the centrifugal valve at B of Fig. 2 in the embodiment of the present invention when closed;

Fig. 4 is an enlarged schematic diagram of the structure when the centrifugal valve at B in Fig. 2 is opened in the embodiment of the present invention.

Indicated in the figure: 1. Inner cylinder, 2. Housing, 3. Inner cylinder support, 4. Door cover, 5. Drive motor, 6. Inner wall, 7. Outer wall, 8. Interlayer gap; 9. Centrifugal valve, 11, drainage pipe, 12, drainage device, 61, first through hole, 71, second through hole, 91, valve core, 92, elastic member, 21, inner cylinder shaft, 101, inner cylinder mouth, 102 , The bottom of the inner cylinder, 103, the side wall of the inner cylinder.

It should be noted that these drawings and text descriptions are not intended to limit the scope of the invention in any way, but to explain the concept of the invention for those skilled in the art by referring to specific embodiments.

Detailed ways

In order to make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be described clearly and completely in conjunction with the accompanying drawings in the embodiments of the present invention. The following embodiments are used to illustrate the present invention. , But not used to limit the scope of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", "outer", etc. The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the pointed device or element must have a specific orientation or a specific orientation. The structure and operation cannot therefore be understood as a limitation of the present invention.

In the description of the present invention, it should be noted that the terms "installed", "connected" and "connected" should be understood in a broad sense, unless otherwise clearly specified and limited. For example, they can be fixed or detachable. Connected or integrally connected; it can be mechanically or electrically connected; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meaning of the above-mentioned terms in the present invention can be understood in specific situations.

As shown in Figures 1 to 4, the embodiment of the present invention introduces a washing machine. The washing machine includes a housing 2 in which an inner tub 1 is arranged. The axis of the inner tub 1 extends horizontally or gradually slopes downward from front to back. The front end of the inner cylinder 1 is an inner cylinder mouth 101 with an opening, and the rear end is an inner cylinder bottom 102 with a seal. The inner cylinder side wall 103 connects the inner cylinder mouth 101 and the inner cylinder bottom 102 to form the inner cylinder 1; 1 No through hole is provided on the cylinder wall, so that the inner cylinder 1 forms a sealed container with only the front opening. At the same time, a door cover 4 that can be opened outwards is installed at the front end of the washing machine housing 2 to close the inner tube opening 101 after the door cover 4 is closed, and to put clothes into the inner tube 1 from the inner tube opening 101 after opening the door cover 4 . The inner tub 1 is installed in the washing machine housing 2 via the inner tub support 3. The inner tub support 3 may be an outer tub that fits the inner tub 1 inside, or it may be a support only for support. The upper and lower sides of the tub support 3 are respectively connected to the washing machine housing 2 via a shock-absorbing suspension spring and a shock-absorbing support rod, so that the inner tub support 3 can be installed in the washing machine housing 2 by vibration. At the same time, the center of the inner tub bottom 102 is coaxially arranged with the motor shaft of the washing machine driving motor 5 to drive the inner tub 1 to rotate, and both the inner tub 1 and the driving motor 5 are fixedly installed on the inner tub support 3. Preferably, the inner cylinder bottom 102 and the drive motor 5 are respectively arranged on both sides of the inner cylinder support 3, the drive motor 5 is fixedly connected to the inner cylinder support 3, and the motor shaft of the drive motor 5 passes through the inner cylinder support via a bearing 3 and coaxially and fixedly connected with the inner cylinder bottom 102, and the motor shaft of the drive motor 5 can rotate relative to the inner cylinder support 3, so that the inner cylinder 1 and the drive motor 5 are mounted on the inner cylinder support 3 and make the inner cylinder 1 The purpose of washing internal clothes by rotating independently under the action of the driving motor 5. Preferably, the motor shaft of the driving motor 5 directly constitutes the inner cylinder shaft 21, and the inner cylinder shaft 21 is coaxially fixedly connected with the inner cylinder bottom 102 of the inner cylinder 1.

In addition, the washing machine in the embodiment of the present invention can be any washing machine in the prior art that has a door cover that closes the mouth of the inner tube and the inner tube forms a sealed container, so that when the washing machine executes a dehydration process, the inner tube is controlled to rotate at a high speed to reduce The water flow separated from the clothes in the inner tub is smoothly discharged out of the inner tub, so as to achieve the purpose of normally executing the dehydration process for the non-porous inner tub washing machine. Therefore, the washing machine in the embodiment of the present invention is not limited to the structure in the drawings. For example, if an existing ordinary washing machine is used, it is only necessary to set the washing machine inner tub 1 without a dehydration hole, and the door cover 4 is formed after the inner tub opening 101 is closed. Washing machine with sealed container.

At the same time, by setting the inner tub to form a sealed container when the door cover is fastened and the washing machine is washing, the laundry only contacts the washing water in the sealed inner tub during washing, which prevents the washing water between the inner and outer tubs from flowing into the inner tub and polluting the clothes. The occurrence of the washing machine greatly improves the cleanliness of the washing machine, and avoids the incomplete washing of the clothes caused by the washing water pollution between the inner and outer tubs.

In the embodiment of the present invention, in order to drain the clothes out of the inner tub 1 of the washing machine by the water flow, and realize that the inner tub 1 is sealed to contain water for normal washing during the working process of the washing machine, the following settings are made:

As shown in Figures 2 to 4, the inner tub 1 of the washing machine is at least partially double-walled with a hollow interlayer. The inner tub 1 is provided with a flow channel passing through the double-wall and connecting the inside and outside of the inner tub 1, and the interlayer gap 8. There is a centrifugal valve 9 that controls the on-off of the flow channel.

By setting a centrifugal valve in the double wall of the inner cylinder, the centrifugal valve is controlled to open the flow channel through the double wall after the rotation speed of the inner cylinder reaches the set value, so as to perform the purpose of draining the washing machine; at the same time, the washing and rinsing procedures are normally performed in the washing machine When the inner cylinder rotates at a low speed and the centrifugal valve receives less centrifugal force, the centrifugal valve correspondingly closes and penetrates the double-walled flow path, so that the inner cylinder can be filled with water, and the washing and rinsing procedures are executed normally, so that the clothes only In contact with the washing water in the sealed inner tub, the washing water between the inner and outer tubs is prevented from flowing into the inner tub and polluting the clothes, and the washing cleanliness of the washing machine is greatly improved.

In the embodiment of the present invention, the centrifugal valve that is set in the interlayer gap and controls the on-off of the flow passage can also be set to any other form of valve body structure in the prior art, such as solenoid valve, mechanical method, hydraulic valve, etc. .

In the embodiment of the present invention, at least part of the side wall 103 of the inner cylinder is composed of an inner wall 6 and an outer wall 7 separated by a gap. The inner wall 6 and the outer wall 7 are respectively provided with through holes to form a communicating inner wall. Runners inside and outside the cylinder 1. Preferably, the through hole provided on the inner wall 6 is the first through hole 61, and the through hole provided on the outer wall 7 is the second through hole 71.

Preferably, the through holes provided on the inner wall 6 and the outer wall 7 are arranged alternately; further preferably, the through holes provided on the inner wall 6 and the outer wall 7 are arranged in sequence along the axis of the inner cylinder. In the embodiment of the present invention, the first through hole 61 provided on the inner wall 6 and the second through hole 71 provided on the outer wall 7 are arranged in sequence along the direction parallel to the axis of the inner cylinder, so that the first through hole flows into the interlayer gap 8 After being buffered by the interlayer gap, the drained water is discharged from the second through hole, which adjusts the water pressure of the drain and avoids the phenomenon of splashing.

In the embodiment of the present invention, the centrifugal valve 9 is installed in the interlayer gap 8 between the inner wall 6 and the outer wall 7, and the spool 91 of the centrifugal valve 9 is driven by the centrifugal force of the inner cylinder 1 to move to correspondingly block Or open the first through hole 61 provided in the inner wall 6 and/or the second through hole 71 provided in the outer wall 7.

In the embodiment of the present invention, the centrifugal valve 9 includes a valve plug 81 installed in the interlayer gap 8 of the double wall of the inner cylinder 1. The outer wall 7 of the inner cylinder 1 extends obliquely to the outside of the inner cylinder 1 and is connected to the inner cylinder 1. The axis is inclined at an angle a. By slanting the outer wall outwards, the spool moves away from the axis of the inner cylinder when the spool is subjected to the centrifugal force of the rotation of the inner cylinder, and is guided by the inclined outer wall during the movement to produce an oblique displacement, thereby making the spool It moves in the axial direction of the inner cylinder to correspondingly open the through holes provided on the inner wall and/or the outer wall to realize the purpose of draining the washing water in the inner cylinder.

Preferably, in the embodiment of the present invention, the angle between the inner wall of the inner cylinder and the axis of the inner cylinder is b, and a is greater than b, so that the inclination slope of the inner wall is smaller than the inclination slope of the outer wall, thereby ensuring the interlayer gap The valve core moves along the outer wall to ensure the displacement of the valve core to prevent the through hole from being unable to open.

In the embodiment of the present invention, the valve core extends in the direction parallel to the axis of the inner cylinder, and one end of the valve core is connected to the inner cylinder via an elastic member. The inner cylinder provides the valve core with a reset elastic force to return to the initial position; when the valve core is in the initial position, the valve core Correspondingly block the through holes of the inner wall and/or outer wall; after the spool is moved by the centrifugal force to overcome the reset elastic force, the spool opens the through holes of the inner wall and/or the outer wall to make the inner cylinder and the outside Connected.

As shown in Figures 3 and 4, in the embodiment of the present invention, the first through hole is on the inner wall and communicates with the middle of the interlayer gap, the second through hole is on the outer wall, and the second through hole is opposite to the second through hole. A through hole is arranged near the bottom side of the inner cylinder; the valve core is located in the interlayer gap, one end of the valve core away from the bottom of the inner cylinder is connected with the elastic member, and the other end of the elastic member is fixed to the inner wall surface of the interlayer gap on the mouth side of the inner cylinder. The outer wall is an inclined surface that gradually slopes away from the axis of the inner cylinder from the bottom side of the inner cylinder to the mouth side of the inner cylinder.

In the embodiment of the present invention, the left and right sides of the valve plug in the rotation direction of the inner cylinder are respectively provided with limit ribs, which are located in the gap between the double walls and are connected to at least one layer of the double wall. It extends in parallel to the axis of the inner cylinder. By providing a limiting rib in the interlayer gap, it is ensured that the valve plug can only move along the axis of the inner cylinder, avoiding the occurrence of misalignment caused by the movement of the valve plug along the rotation direction of the inner cylinder.

In the embodiment of the present invention, the valve core is arranged parallel to the outer wall on the side away from the inner cylinder, so that the centrifugal valve can ensure that the valve core is in close contact with the outer wall and moves along the outer wall regardless of the state. . Preferably, the side of the valve core near the inner cylinder is arranged in parallel with the inner wall, so that the valve core is in close contact with the inner wall when the valve core is in the closed state, and the sealing performance of the valve core when the valve core is closed is ensured.

In the embodiment of the present invention, the valve core of the centrifugal valve includes a counterweight that generates centrifugal force by its own gravity as the inner cylinder rotates; the outer circumference of the counterweight is wrapped with elastic deformation and correspondingly block the inner wall and/or outer wall. The sealing layer of the through hole of the layer wall. By setting the centrifugal valve core as a double-layer structure with a central counterweight and an outer layer wrapped with an elastic layer, the valve core can generate centrifugal force by its own weight, and can effectively seal the through hole by using the outer elastic material.

In the embodiment of the present invention, the inner cylinder is provided with a plurality of flow passages passing through the double wall and connecting the inside and outside of the inner cylinder, and each flow passage is arranged symmetrically with respect to the axis of the inner cylinder; each flow passage is respectively installed with a corresponding control flow passage On-off centrifugal valve. A plurality of symmetrically arranged centrifugal valves are arranged on the inner cylinder, so that the center of gravity of the inner cylinder is still on the axis line, thereby ensuring the stability of the rotation of the inner cylinder. At the same time, the drainage channels on the inner cylinder are increased, and the drainage rate is improved.

In the embodiment of the present invention, any one of the outer wall and the inner wall may be composed of a grid plate or a limit rod that provides a limit support for the valve core of the centrifugal valve, and the drain from the inner cylinder is from the grid plate The grid holes arranged or the gaps on both sides of the limit rod are discharged. Through the above arrangement, the structure of the double wall is simplified, the weight of the inner cylinder is reduced, and the opening and closing actions of the centrifugal valve can still be effectively realized, and the effect of smoothly draining the inner cylinder outward.

In the embodiment of the present invention, the inner wall constitutes a cylindrical structure with one end open and one end closed, and the outer wall is a cylindrical structure covering the inner wall entirely; or the inner wall constitutes a cylindrical structure with one end open and one end closed. Structure, the outer wall covers the part of the cylindrical inner wall; or, the outer wall constitutes a cylindrical structure with one end open and one end closed, and the inner wall covers the part of the cylindrical outer wall.

In the embodiment of the present invention, the outer circumference of the outer layer wall is connected with the inner layer wall, or the outer circumference of the inner layer wall is connected with the outer layer wall, so that the interlayer gap constitutes a cavity sealed on the outer circumference.

In the embodiment of the present invention, the first through hole provided on the inner wall is in the same radial cross section of the inner cylinder, and the side wall of the inner cylinder is of a diameter increasing from both ends to the first through hole in the cross section direction. It is arranged to ensure that the water in the inner cylinder flows against the wall under the action of centrifugal force, and converges to the first through hole.

In the embodiment of the present invention, an inner tub support 3 composed of an outer tub is arranged outside the inner tub 1 of the washing machine to collect the drain water flowing out of the inner tub and then discharge it to the outside. The upper part, the shock-absorbing suspension spring, and the lower part of the inner tube support 3 are respectively connected to the washing machine housing 2 through the shock-absorbing support, so that the inner tube support 3 can be installed in the washing machine housing 2 so as to generate vibration displacement. In this embodiment, the inner cylinder support 3 coaxially covers the inner cylinder bottom 102, the inner cylinder support 3 is mounted with a drive motor 5 away from the inner cylinder side, and the inner cylinder shaft 21 passes through the water collecting pan 7, and one end is connected to the inner cylinder bottom. 102 is coaxially connected, and the other end is directly connected to the driving motor 5 or connected to the driving motor 5 via a deceleration clutch.

Preferably, in order to improve the washing efficiency of the washing machine, an auxiliary stirring device, such as a pulsator, a stirring column, etc., can also be installed in the inner tub 1; the drive shaft of the auxiliary stirring device passes through the inner tub bottom 102 and then passes through the water collecting tray. After 7 it is directly connected to the motor or to the drive motor 5 via the deceleration clutch.

In the embodiment of the present invention, the bottom of the inner cylinder support 3 is connected to the drain pipe 11, and the drain pipe 11 is provided with a control device 12 for controlling the flow of water in the pipeline; the control device 12 can be used for water supply and drainage. The drain pump used to drain the washing machine can also be a drain valve for draining the lower drain washing machine.

In the embodiment of the present invention, the inner cylinder shaft 21 passes through the water collecting pan 7, and the penetrating end of the inner cylinder shaft 21 is directly connected to the driving motor or via a transmission device. The inner tube shaft 2 is composed of a sleeve with a hollow inside, and the inner hollow part forms a channel communicating with the inside of the inner tube 1; the end of the inner tube shaft 21 passing through the water collecting tray 7 is connected to the water intake structure of the washing machine, so that the washing machine Influent water enters the inner cylinder 1 through the flow channel formed by the hollow part of the inner cylinder shaft 21.

The above are only the preferred embodiments of the present invention, and do not limit the present invention in any form. Although the present invention has been disclosed as above in preferred embodiments, it is not intended to limit the present invention. Any technology familiar with this patent Without departing from the scope of the technical solution of the present invention, the personnel can use the technical content suggested above to make slight changes or modification into equivalent embodiments with equivalent changes, but any content that does not depart from the technical solution of the present invention is based on the technology of the present invention Essentially, any simple modifications, equivalent changes and modifications made to the above embodiments still fall within the scope of the present invention.

Claims

A washing machine, characterized in that: the inner tube of the washing machine is a container whose opening is closed by a door cover and is closed during washing; at least part of the inner tube is a double wall with a hollow interlayer, and the inner tube is provided with a through double wall , Connecting the flow channel inside and outside the inner cylinder, the hollow interlayer is provided with a valve to control the flow channel on and off.
The washing machine according to claim 1, wherein at least part of the side wall of the inner tub is composed of an inner wall and an outer wall separated by a gap, and the inner wall and the outer wall are respectively provided with through holes, To form a flow channel connecting the inside and outside of the inner cylinder;

Preferably, the through holes provided on the inner wall and the outer wall are arranged alternately;

Further preferably, the through holes provided on the inner wall and the outer wall are arranged in order along the axis of the inner cylinder.
The washing machine according to claim 2, wherein the valve is installed in the gap between the inner wall and the outer wall;

Preferably, the valve is a centrifugal valve that is driven by the centrifugal force of the inner cylinder to rotate to produce a displacement action to open and close the through holes provided in the inner wall and/or the outer wall.
A washing machine according to any one of claims 1 to 3, wherein the valve comprises a valve plug installed in the gap of the double wall of the inner cylinder, and the outer wall of the inner cylinder is inclined to extend to the outside of the inner cylinder, and An inclined plane with an included angle a between the axis of the inner cylinder;

Preferably, the angle between the inner wall of the inner cylinder and the axis of the inner cylinder is b, and a is greater than b.
The washing machine according to claim 4, wherein the valve core extends in a direction parallel to the axis of the inner cylinder, one end of the valve core is connected to the inner cylinder via an elastic member, and the inner cylinder provides the valve core with a reset elastic force to return to the initial position; When the valve core is in the initial position, the valve core correspondingly blocks the through holes of the inner wall and/or the outer wall; after the valve core is moved by the centrifugal force and overcomes the reset elastic force, the valve core opens the inner wall and/or outer wall Through holes to make the inner cylinder communicate with the outside;

Preferably, a limiting rib for limiting the rotation direction of the inner cylinder of the valve plug is provided in the gap between the double walls.
The washing machine according to claim 4, wherein the valve core is arranged parallel to the outer wall on the side away from the inner cylinder;

Preferably, the valve core is arranged parallel to the inner wall on one side close to the inner cylinder.
The washing machine according to claim 4, wherein the valve core includes a counterweight that generates centrifugal force by its own gravity as the inner cylinder rotates; the outer circumference of the counterweight is wrapped with elastic deformation and correspondingly seal the inner The layer wall and/or outer layer wall through-hole sealing layer.
A washing machine according to any one of claims 1 to 3, characterized in that the inner tub is provided with a plurality of flow passages passing through the double wall and connecting the inside and outside of the inner tub, and each flow passage is arranged symmetrically with respect to the axis of the inner tub. Cloth; Each flow channel is equipped with a corresponding valve to control the on and off of the flow channel.
The washing machine according to claim 2, wherein any one of the outer wall and the inner wall is composed of a grid plate or a limit rod that provides a limit support for the valve core of the valve, and the inner cylinder flows out The drainage is discharged from the grid holes arranged on the grid plate or the gaps on both sides of the limit rod.
The washing machine according to claim 2, wherein the inner wall constitutes a cylindrical structure with one end open and one end closed, and the outer wall is a cylindrical structure covering the inner wall completely;

Alternatively, the inner wall constitutes a cylindrical structure with one end open and one end closed, and the outer wall covers a part of the cylindrical inner wall;

Alternatively, the outer layer wall constitutes a cylindrical structure with one end open and one end closed, and the inner layer wall covers a part of the cylindrical outer layer wall.