WO2019227895A1

WO2019227895A1 - Drum mechanism and washing machine having same

Info

Publication number: WO2019227895A1
Application number: PCT/CN2018/120928
Authority: WO
Inventors: 衣震旭; 刘建; 吕钟朋; 杨洪永; 熊瑞
Original assignee: 珠海格力电器股份有限公司
Priority date: 2018-05-31
Filing date: 2018-12-13
Publication date: 2019-12-05
Also published as: CN108442077A

Abstract

Provided are a drum mechanism and a washing machine having same. The drum mechanism comprises: an outer drum, and an inner drum having a first cavity. The inner drum is at least partially located in a cavity of the outer drum; a space between the wall of the inner drum and the wall of the outer drum is a second cavity; the first cavity and the second cavity have a communicated state in which the first cavity is communicated with the second cavity and a disconnected state in which the first cavity is not communicated with the second cavity; in the communicated state, liquid in the first cavity unidirectionally flows to the second cavity, and liquid in the second cavity cannot flow to the first cavity. The technical solution provided in the present invention can solve the problem in the prior art that the drum mechanism is prone to cause secondary contamination to clothes.

Description

Drum mechanism and washing machine with same

Technical field

The present invention relates to the technical field of washing machines, and in particular, to a drum mechanism and a washing machine having the same.

Background technique

The drum mechanism of the existing drum washing machine is filled with water by the outer drum. During the washing process, the water in the inner drum and the outer drum is repeatedly exchanged through a plurality of through holes in the inner drum. This structure is easy to accumulate in the area between the inner tube and the outer tube. The long-term accumulation of bacteria is easy to breed bacteria. During the subsequent (second) washing, the dirt between the inner tube and the outer tube is leached out, Exchange with the water in the outer cylinder will cause secondary pollution to the clothes. This is not good for the washing of clothes and the health of the user.

Summary of the Invention

The invention provides a drum mechanism and a washing machine having the same to solve the problem that the drum mechanism in the prior art easily causes secondary pollution to clothes.

In order to solve the above problem, according to one aspect of the present invention, the present invention provides a drum mechanism including: an outer cylinder; an inner cylinder having a first cavity; the inner cylinder is at least partially located in the cavity of the outer cylinder; the inner cylinder The area between the wall of the cylinder and the wall of the outer cylinder is the second cavity; the first cavity and the second cavity have a connected state of disconnection and a disconnected state of each other. In the connected state, the first cavity The liquid in the body flows unidirectionally toward the second cavity, and the liquid in the second cavity cannot flow toward the first cavity.

Further, the drum mechanism further includes: a liquid discharge valve disposed on the wall of the inner cylinder, the liquid discharge valve is used to switch the connected state and the disconnected state of the first cavity and the second cavity.

Further, the first cavity has an opening, and the roller mechanism further includes a liquid supply pipe for supplying liquid to the first cavity, and an outlet of the liquid supply pipe faces the opening of the first cavity.

Further, the roller mechanism further includes: a door seal connected to the outer cylinder, the door seal having an annular structure, and a liquid supply pipe provided on the door seal.

Further, the inner cylinder is rotatable. When the rotation speed of the inner cylinder is greater than or equal to a predetermined value, the drainage valve communicates the first cavity and the second cavity. When the rotation speed of the inner cylinder is lower than the predetermined value, the drainage valve One cavity is disconnected from the second cavity.

Further, the liquid discharge valve includes: a valve seat, which is arranged on the cylinder wall of the inner cylinder; the valve seat has a valve cavity; the valve cavity has a liquid inlet and a liquid outlet; the liquid outlet is in communication with the second cavity; It is movably arranged in the valve cavity. The valve core can avoid or block the liquid inlet. When the valve core avoids the liquid inlet, the first cavity and the second cavity are in a connected state. When the valve core plugs the liquid inlet, A cavity and a second cavity are in a disconnected state.

Further, the drain valve further includes: an elastic member, one end of the elastic member is connected or abutted to the valve core, the other end of the elastic member is connected or abutted to the valve seat, and the elastic member cooperates with the valve core to avoid or block the liquid mouth.

Further, the valve seat has a guide hole, and the valve core includes: a valve stem, a first end of the valve stem is movably penetrated in the guide hole; a gasket is provided at the second end of the valve stem, and the gasket is used to close the inlet. Liquid port.

Further, there are a plurality of drain valves, and the plurality of drain valves are arranged at intervals along the circumferential direction of the first cavity.

Further, the drum mechanism further includes a grille provided in the first cavity, the grille having a plurality of through holes, and the grille is used to separate the laundry in the first cavity from the drain valve.

Further, the first cavity has an opening, an end of the side wall of the first cavity remote from the opening has an installation position, and the drain valve is located at the installation position.

Further, the rotation axis of the inner cylinder is set horizontally, the opening of the first cavity extends along the rotation axis, and along the direction from the opening of the first cavity to the cavity bottom of the first cavity, the radial size of the first cavity gradually increases. Big.

Further, the drum mechanism further includes: a liquid discharge tube, which is disposed below the outer cylinder, and the liquid discharge tube is directly communicated with the second cavity.

According to another aspect of the present invention, there is provided a washing machine including a drum mechanism, and the drum mechanism is the drum mechanism provided above.

Applying the technical solution of the present invention, the second cavity between the inner and outer cylinders of the drum mechanism and the first cavity of the inner cylinder have a connected state and a disconnected state. Because the liquid in the drum mechanism is in the connected state, It can only flow from the first cavity to the second cavity, but not from the second cavity to the first cavity. Therefore, the dirt between the inner and outer cylinders will not enter the inner cylinder, thereby avoiding the problem of laundry washing. The drum mechanism is prone to cause secondary pollution to clothes. By adopting the technical solution of the present invention, water can be directly injected into the inner tub for washing, instead of the prior art method of injecting water into the outer tub, and then repeatedly exchanging the water in the inner tub and the outer tub for washing, thereby avoiding secondary damage to clothes. The problem of pollution.

BRIEF DESCRIPTION OF THE DRAWINGS

The accompanying drawings, which form a part of this application, are used to provide a further understanding of the present invention. The schematic embodiments of the present invention and the descriptions thereof are used to explain the present invention, and do not constitute an improper limitation on the present invention. In the drawings:

FIG. 1 is a schematic structural diagram of a roller mechanism according to an embodiment of the present invention; FIG.

Figure 2 shows a cross-sectional view of Figure 1;

FIG. 3 shows an enlarged view of the drain valve in FIG. 2.

The above drawings include the following reference signs:

10, outer cylinder; 20, inner cylinder; 30, drain valve; 31, valve seat; 32, valve core; 321, valve stem; 322, gasket; 33, elastic member; 40, liquid supply pipe; 50, door Seal; 60, grille; 70, drain pipe.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all the embodiments. The following description of at least one exemplary embodiment is actually merely illustrative and in no way serves as any limitation on the invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

As shown in FIG. 1 to FIG. 3, an embodiment of the present invention provides a drum mechanism including: an outer cylinder 10; an inner cylinder 20 having a first cavity; the inner cylinder 20 is at least partially located in the cavity of the outer cylinder 10 In the middle, the area between the cylinder wall of the inner cylinder 20 and the cylinder wall of the outer cylinder 10 is the second cavity; the first cavity and the second cavity have a connected state of mutual communication and a disconnected state of each other. In the connected state, the liquid in the first cavity flows unidirectionally toward the second cavity, and the liquid in the second cavity cannot flow toward the first cavity.

Applying the technical solution of this embodiment, the second cavity between the inner cylinder 20 and the outer cylinder 10 of the drum mechanism and the first cavity of the inner cylinder have a connected state and a disconnected state. Since the drum mechanism is in the connected state, The liquid in the can only flow from the first cavity to the second cavity, and cannot flow from the second cavity to the first cavity, so the dirt between the inner cylinder 20 and the outer cylinder 10 will not enter the inner cylinder 20, Therefore, the problem that the drum mechanism is likely to cause secondary pollution to the laundry when the laundry is washed is avoided. By using the technical solution of this embodiment, water can be directly injected into the inner cylinder 20 for washing, instead of the prior art in which water is injected into the outer cylinder 10 and then the water in the inner cylinder 20 and the outer cylinder 10 is repeatedly exchanged for washing. The problem of secondary contamination of clothes is avoided.

In this embodiment, the drum mechanism further includes: a drain valve 30, which is disposed on the cylinder wall of the inner cylinder 20. The drain valve 30 is used to switch the communication state between the first cavity and the second cavity and Disconnected. When the laundry is washed, the first cavity and the second cavity are switched to the disconnected state, and when dehydration is required, the first cavity and the second cavity are switched to the connected state for drainage. The liquid discharge valve 30 is provided to facilitate the control of the opening and closing of the first cavity and the second cavity.

As shown in FIG. 2, the first cavity has an opening, and the roller mechanism further includes a liquid supply pipe 40 for supplying liquid to the first cavity, and an outlet of the liquid supply pipe 40 faces the opening of the first cavity. By providing the liquid supply pipe 40, water can be directly injected into the first cavity of the inner cylinder 20, which can replace the prior art in which water is first injected into the outer cylinder 10, and then the water in the inner cylinder 20 and the outer cylinder 10 is repeatedly exchanged for washing. Method, thereby avoiding the problem of secondary pollution to clothes.

In this embodiment, the roller mechanism further includes: a door seal 50, which is connected to the outer cylinder 10, the door seal 50 has a ring structure, and the liquid supply pipe 40 is disposed on the door seal 50. The liquid supply pipe 40 is disposed on the door seal 50 to facilitate the fixing of the liquid supply pipe 40. Specifically, the liquid supply pipe 40 may be disposed on the upper part of the door seal 50, which is convenient for a user to operate.

In this embodiment, the inner cylinder 20 is rotatable. When the rotation speed of the inner cylinder 20 is greater than or equal to a predetermined value, the drain valve 30 connects the first cavity and the second cavity. When the rotation speed of the inner cylinder 20 is lower than a predetermined value, The drain valve 30 disconnects the first cavity and the second cavity at the time. In this way, the automatic movement of the drain valve 30 can be achieved by changing the rotation speed of the inner cylinder 20, and the first cavity and the second cavity have been connected or disconnected.

As shown in FIG. 3, the drain valve 30 includes a valve seat 31 disposed on a cylinder wall of the inner cylinder 20. The valve seat 31 has a valve cavity, and the valve cavity has a liquid inlet and a liquid outlet. The two cavities communicate; the valve core 32 is movably disposed in the valve cavity. The valve core 32 can avoid or block the liquid inlet. When the valve core 32 avoids the liquid inlet, the first cavity and the second cavity are in a connected state. When the valve core 32 blocks the liquid inlet, the first cavity and the second cavity are in a disconnected state. In this way, the liquid inlet can be avoided or blocked by the movement of the valve core 32 in the valve seat 31 to connect or disconnect the first cavity and the second cavity.

In this embodiment, the drain valve 30 further includes: an elastic member 33, one end of the elastic member 33 is connected or abutted to the valve core 32, the other end of the elastic member 33 is connected or abutted to the valve seat 31, and the elastic member 33 and The spool 32 cooperates to avoid or block the liquid inlet. Specifically, when the inner cylinder 20 rotates, the valve core 32 generates a centrifugal force. When the rotation speed of the inner cylinder 20 is less than a predetermined value, the combined force of the centrifugal force of the valve core 32 and gravity is smaller than the elastic force of the elastic member 33, and the valve core 32 does not move at this time. And the liquid inlet is blocked, the first cavity and the second cavity are disconnected; when the rotation speed of the inner cylinder 20 is greater than or equal to a predetermined value, the combined force of the centrifugal force and the gravity of the valve core 32 is greater than the elastic force of the elastic member 33, At this time, the spool 32 moves to avoid the liquid inlet, and the first cavity and the second cavity communicate. This setting method has a simple structure and can realize automatic operation.

Specifically, the valve seat 31 has a guide hole, and the valve core 32 includes: a valve stem 321, a first end of the valve stem 321 is movably penetrated in the guide hole, and a gasket 322 is provided at the second end of the valve stem 321. The sealing pad 322 is used to close the liquid inlet. The valve stem 321 can be guided by movably passing the first end of the valve stem 321 in the guide hole, and by providing a gasket 322 at the second end of the valve stem 321, the drain valve 30 can improve the first cavity. Sealing effect.

In this embodiment, a plurality of drain valves 30 may be provided, and the plurality of drain valves 30 are arranged at intervals along the circumferential direction of the first cavity, so that the first cavity and the first cavity may be improved by the plurality of drain valves 30. The flow capacity of the two chambers can accelerate the speed of dehydration and drainage and reduce the washing time.

As shown in FIG. 2, the drum mechanism further includes a grille 60 disposed in the first cavity. The grille 60 has a plurality of through holes. The grille 60 is used to space the laundry in the first cavity from the drain valve 30. open. The provision of the grille 60 can prevent the clothing from covering the liquid inlet of the liquid discharge valve 30 and blocking the liquid inlet of the liquid discharge valve 30, thereby avoiding the problem of being unable to drain water.

In this embodiment, the first cavity has an opening, an end of the side wall of the first cavity remote from the opening has an installation position, and the drain valve 30 is located at the installation position. This facilitates the concentration of water in the first cavity and the drainage from the first cavity.

In order to enable the water in the first cavity to be drained cleanly, in this embodiment, the rotation axis of the inner cylinder 20 is set horizontally, the opening of the first cavity extends along the rotation axis, and the opening of the first cavity to the first cavity Direction of the cavity bottom, the radial dimension of the first cavity gradually increases. In this way, when the inner cylinder 20 is rotated, under the action of centrifugal force, the water in the first cavity can be concentrated to the position where the drain valve 30 is located, thereby draining the water in the first cavity cleanly.

In this embodiment, the drum mechanism further includes a liquid discharge pipe 70 disposed below the outer cylinder 10, and the liquid discharge pipe 70 is in direct communication with the second cavity. The liquid drainage pipe 70 is provided to facilitate drainage of water in the second cavity. Moreover, since the solution of this embodiment does not need to repeatedly exchange water in the first cavity and the second cavity, it is not necessary to store water in the second cavity, so that the drain pipe 70 and the second cavity can directly communicate with each other. There is no need to set a valve between them, which simplifies the structure of the device.

Another embodiment of the present invention further provides a washing machine including a drum mechanism, wherein the drum mechanism is the drum mechanism provided in the above embodiment. Applying the technical solution of this embodiment, the second cavity between the inner cylinder 20 and the outer cylinder 10 of the drum mechanism and the first cavity of the inner cylinder have a connected state and a disconnected state. Since the drum mechanism is in the connected state, The liquid in the can only flow from the first cavity to the second cavity, and cannot flow from the second cavity to the first cavity, so the dirt between the inner cylinder 20 and the outer cylinder 10 will not enter the inner cylinder 20, Therefore, the problem that the drum mechanism is likely to cause secondary pollution to the laundry when the laundry is washed is avoided. By using the technical solution of this embodiment, water can be directly injected into the inner cylinder 20 for washing, instead of the prior art in which water is injected into the outer cylinder 10, and then the water in the inner cylinder 20 and the outer cylinder 10 is repeatedly exchanged for washing. The problem of secondary contamination of clothes is avoided. The use of the washing machine can avoid secondary pollution, improve washing efficiency, and protect the hygiene of the clothes and the health of the user.

In an embodiment of the present invention, the washing machine may be configured as a drum washing machine, wherein the drum mechanism is composed of an inner cylinder, an outer cylinder, a suspension structure, a damping structure, a weight portion, a belt disc, a motor, and a drain pipe. . The inner cylinder is designed without multiple through-holes. There are multiple centrifugal drainage valves (drain valves) arranged symmetrically and evenly around the center of the rotation axis on the inner cylinder. A grid is designed between the laundry and the centrifugal drainage valve. Grid.

At the beginning of the washing process, water is sprayed directly into the inner cylinder from the water inlet pipe (liquid supply pipe). The amount of water injection is lower than the opening edge of the inner cylinder. Most of the water is stored in the inner cylinder during the washing process. / min, the centrifugal drain valve is closed at this time; after the washing process needs to be drained, the speed of the washing machine is increased, at this time the centrifugal drain valve is opened, and the water flows from the inner cylinder to the outer cylinder through the centrifugal drainage valve, and then the liquid is discharged through the drain pipe. The water is discharged out of the washing machine. During the whole process, the water only flows out from the inner cylinder to the outer cylinder, and does not flow from the outer cylinder to the inner cylinder, thereby avoiding secondary pollution.

The centrifugal drainage valve is composed of a gasket, a stem, a spring, and a valve seat. When the rotation speed is less than a predetermined value (for example, 100r / min), the centrifugal drainage valve is closed (the predetermined value is greater than the washing speed and less than the minimum dewatering speed). Cannot flow from the inner cylinder through the centrifugal drain valve; when the speed is greater than or equal to a predetermined value, the combined force of the centrifugal force of the valve core and the gravity is greater than the force of the spring, the seal is separated from the valve seat, the centrifugal drain valve is opened, and water can flow from the inner cylinder The outer tube flows out from the drain pipe.

The grille is designed between the laundry and the centrifugal drainage valve. During the drainage process, the clothing is prevented from covering or clogging the centrifugal drainage valve, resulting in the inability to drain water or uneven drainage. The grille has a porous structure that does not affect the water flow, and the grille can be disassembled and cleaned.

During the washing process, the clothes are constantly rubbing against the inner wall of the inner tube. The sharp edges of the holes of the inner tube of the conventional metal material will wear the clothes.

During the washing process, there will be a small amount of water splashing into the door seal, the observation window or the gap between the opening of the inner tube and the outer tube. The final splashed water will be collected in the outer tube and then discharged by the drain pipe. It is also a one-way flow.

During washing, water flows from the inner cylinder and is collected by the outer cylinder, and is discharged directly to the outside through the drain pipe. The product does not need a drain pump or a drain valve.

The above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and changes. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

A roller mechanism, comprising:

Outer tube (10);

The inner cylinder (20) has a first cavity. The inner cylinder (20) is at least partially located in the cavity of the outer cylinder (10). The inner wall of the inner cylinder (20) and the outer cylinder (10) the area between the cylinder walls is the second cavity;

The first cavity and the second cavity have a connected state in which they are in communication with each other and a disconnected state in which they are not in communication with each other. In the connected state, the liquid in the first cavity is separated from the second cavity. To flow, the liquid in the second cavity cannot flow to the first cavity.
The roller mechanism according to claim 1, wherein the roller mechanism further comprises:

A drain valve (30) is arranged on the wall of the inner cylinder (20), and the drain valve (30) is used to switch the communication state between the first cavity and the second cavity And said disconnected state.
The roller mechanism according to claim 1, wherein the first cavity has an opening, and the roller mechanism further comprises:

A liquid supply pipe (40) is used to supply liquid to the first cavity, and an outlet of the liquid supply pipe (40) faces an opening of the first cavity.
The roller mechanism according to claim 3, wherein the roller mechanism further comprises:

A door seal (50) is connected to the outer cylinder (10), the door seal (50) has a ring structure, and the liquid supply pipe (40) is disposed on the door seal (50).
The drum mechanism according to claim 2, characterized in that the inner cylinder (20) is rotatable, and when the rotation speed of the inner cylinder (20) is greater than or equal to a predetermined value, the drain valve (30) will The first cavity is in communication with the second cavity, and when the rotation speed of the inner cylinder (20) is lower than the predetermined value, the drain valve (30) connects the first cavity and the second cavity. The second cavity is disconnected.
The roller mechanism according to claim 2, wherein the liquid discharge valve (30) comprises:

A valve seat (31) is arranged on the cylinder wall of the inner cylinder (20), the valve seat (31) has a valve cavity, the valve cavity has a liquid inlet and a liquid outlet, and the liquid outlet Communicating with the second cavity;

A valve core (32) is movably disposed in the valve cavity, the valve core (32) can avoid or block the liquid inlet, and the valve core (32) avoids the liquid inlet The first cavity and the second cavity are in the communication state, and the first cavity and the second cavity are in the interruption state when the valve core (32) blocks the liquid inlet. On state.
The roller mechanism according to claim 6, wherein the liquid discharge valve (30) further comprises:

An elastic member (33), one end of the elastic member (33) is connected or abutted with the valve core (32), and the other end of the elastic member (33) is connected or abutted with the valve seat (31) The elastic member (33) cooperates with the valve core (32) to avoid or block the liquid inlet.
The roller mechanism according to claim 6, characterized in that the valve seat (31) has a guide hole, and the valve core (32) comprises:

A valve stem (321), a first end of the valve stem (321) being movably penetrated in the guide hole;

A gasket (322) is disposed at the second end of the valve stem (321), and the gasket (322) is used to close the liquid inlet.
The roller mechanism according to claim 2, wherein there are a plurality of the drain valves (30), and a plurality of the drain valves (30) are arranged at intervals along a circumferential direction of the first cavity.
The roller mechanism according to claim 2, wherein the roller mechanism further comprises:

A grille (60) is disposed in the first cavity, the grille (60) has a plurality of through holes, and the grille (60) is used to connect the clothing in the first cavity with the clothing in the first cavity. The drain valves (30) are spaced apart.
The roller mechanism according to claim 2, wherein the first cavity has an opening, an end of a side wall of the first cavity remote from the opening has a mounting position, and the drain valve (30 ) Is located in the mounting position.
The roller mechanism according to claim 11, characterized in that the rotation axis of the inner cylinder (20) is horizontally arranged, and the opening of the first cavity extends along the rotation axis and along the first cavity. Opening to the cavity bottom of the first cavity, the radial dimension of the first cavity gradually increases.
The roller mechanism according to claim 1, wherein the roller mechanism further comprises:

A liquid discharge pipe (70) is disposed below the outer cylinder (10), and the liquid discharge pipe (70) is directly communicated with the second cavity.
A washing machine includes a drum mechanism, wherein the drum mechanism is the drum mechanism according to any one of claims 1 to 13.