JP7254955B2 - Inner tub of drum-type washing machine and drum-type washing machine - Google Patents

Description

This application claims priority from a Chinese patent application filed on March 13, 2019 with the Patent Office of China with application number 201910189918.8, the entire content of which is incorporated herein by reference.

TECHNICAL FIELD The present application relates to the technical field of washing machines, for example, the inner tub of a drum-type washing machine and the drum-type washing machine.

As the most widely used household appliance in people's daily lives, washing machines have liberated people from the troubles of washing clothes and brought great convenience to people. However, washing machines also have drawbacks, such as being slow and consuming a lot of water. With the development of society, water resources are becoming more and more important as an important natural resource. there is

In order to solve the problem of water saving in washing machines, for example, there is a Chinese patent application with the application number 201410215346.3 and the title of the invention is "drum-type washing machine". comprising an inner tank and an outer tank in the housing, a door seal between the outer tank and the housing, a driving device connected to the inner tank, and the inner tank having a non-perforated interior and the inner tank is a conical cylinder with a bottom having a small diameter and an opening having a large diameter. One end of the water injection conduit is connected to the washing water rapid heating device, the other end of the water injection conduit is inserted through the door seal to the inner tank, and the outer tank is provided with a drain port and a water pressure detection device. be done. According to the above technical aspect, the inner tank according to the present invention is a non-perforated inner tank, and the water injection conduit provided in the door seal realizes water injection into the inner tank, and the shape of the inner tank itself realizes drainage in the dehydration process. , it can be seen that this prevents water from accumulating between the inner tub and the outer tub, thereby saving the amount of water used for washing.

The invention provides a drum-type washing machine with a non-perforated inner tub, which needs to be soaked with a certain amount of washing water to wash the clothes. It is necessary to hold a certain amount of water at each time, which increases the load on the motor and causes problems such as power consumption. In addition, the water injection method of the drum type washing machine disclosed in this invention is to pass through the door seal, and the role of the door seal is to realize the sealing of the outer tub of the washing machine, so the water injection pipe is installed in the door seal. It is easy to affect the sealing effect of the door seal, and it is difficult to implement, and the present invention cannot implement the measurement of the water injection level inside the inner tank.

In addition, for a drum-type washing machine having an imperforate inner tub, maintaining the sealing of the drain port in the inner tub is the key point for realizing waterlessness between the inner tub and the outer tub. There is a proposal to install a sealing part at the drain port and seal the drain port by sealing contact between the movable part and the sealing part. It is complicated to install on the arc-shaped inner tank wall, and it is difficult to maintain a stable state.

The present application includes a storage space formed to be surrounded by one physical wall and configured to independently store washing water, and a storage space installed in the physical wall and configured to discharge water from an inner tub. and at least one drain port, wherein a sealing portion is installed on the solid wall of the outer peripheral region of the drain port.

The present application relates to the inner tank, and a sealing component installed at a drain port of the inner tank and configured to fit with the sealing portion of the inner tank so as to seal or open the drain port. It further provides a front-loading washing machine comprising:

1 is a schematic diagram of the principle of a drum-type washing machine according to an embodiment of the present application; FIG. FIG. 2 is a schematic diagram of the operation principle of the sealed drain device installed in the front-loading washing machine in Embodiments 1 and 2 of the present application; FIG. 3 is a partially enlarged view of the sealed drainage device in FIG. 2; 3 is a partial enlarged view of another embodiment of the sealed drainage device in FIG. 2; FIG. FIG. 2 is an explosion view of the sealed drainage device of Example 1 and Example 2 of the present application; FIG. 3 is a schematic diagram of the operation principle of the sealed drain device installed in the drum-type washing machine according to Embodiment 3 of the present application; FIG. 7 is a partially enlarged view of the sealed drainage device in FIG. 6; 7 is a partial enlarged view of another embodiment of the sealed drainage device in FIG. 6; FIG. It is an assembly drawing of a sealed drainage device and a baffle in Example 4 of the present application. FIG. 4 is a structural schematic diagram of an inner tub assembled with a sealed drainage device and a baffle of a drum-type washing machine according to Embodiment 4 of the present application; FIG. 5 is a schematic diagram of the operation principle of the sealed drain device installed in the front-loading washing machine according to Embodiment 4 of the present application; FIG. 8 is a schematic diagram of the operation principle of another embodiment in which the sealed drain device in Example 4 of the present application is installed in a drum-type washing machine; FIG. 12 is a partially enlarged view of the sealed drainage device of FIG. 11; FIG. 10 is a schematic diagram of the operation principle of the sealed drain device installed in the drum-type washing machine according to Embodiment 5 of the present application; 15 is a partially enlarged view of the sealed drainage device of FIG. 14; FIG. FIG. 6 is a structural schematic diagram of a sealed drainage device according to Embodiment 6 of the present application; FIG. 11 is a partial structural schematic diagram of an inner tank equipped with a sealed drainage device in Embodiment 6 of the present application; FIG. 6 is a schematic diagram of the operation principle of the sealed drain device installed in the drum-type washing machine according to Embodiment 6 of the present application; FIG. 19 is a partially enlarged view of the sealed drainage device of FIG. 18; 19 is a partial enlarged view of another embodiment of the sealed drainage device of FIG. 18; FIG. FIG. 10 is a schematic diagram of the working principle of the sealed drain device installed in the drum-type washing machine according to Embodiment 7 of the present application; 22 is a partial enlarged view of the sealed drainage device of FIG. 21; FIG. 22 is a partial enlarged view of another embodiment of the sealed drainage device of FIG. 21; FIG. FIG. 10 is a schematic diagram of the operation principle of the sealed drain device installed in the drum-type washing machine according to Embodiment 9 of the present application; 25 is a partial enlarged view of the sealed drainage device of FIG. 24; FIG.

Hereinafter, the inner tub of the drum-type washing machine and the drum-type washing machine of the present application will be described in detail with reference to the drawings.

As shown in FIGS. 1 to 25, this embodiment provides a drum-type washing machine with a non-perforated inner tub and a front-opening structure, which has a simple structure and allows washing water to flow between the inner tub and the outer tub. Alternatively, there is no need to pour rinsing water, thus reducing the amount of washing water in the washing machine and saving water resources. It avoids the possibility of dirt adhering between the inner tub and the outer layer, ensures the cleanliness and hygiene of the washing machine used by the user, and enhances the user experience.

The drum-type washing machine according to this embodiment includes a housing 19 including a top cover 2, a front cover, a back cover and a bottom plate. The bottom leg 9 is attached and fixed to the bottom plate and configured to support the entire washing machine. An outer tank 18 is provided inside the housing 19 , and an inner tank 17 is coaxially installed in the outer tank 18 . The outer tank 18 is configured to collect the waste water of the inner tank 17 and the waste water of the high speed centrifugal dehydration of the inner tank 17 . A baffle 32 is installed in the inner tub 17, and when the inner tub 17 rotates, the clothes are washed by hitting the clothes while continuously lifting and dropping them by the baffle 32. - 特許庁The inner tank 17 has a non-porous structure. The outer tank 18 has a center attachment hole, and the bearing 12 is attached and fixed to the center attachment hole. The inner tub shaft 13 , which is tightly connected to the inner tub 17 , is connected to the drive motor 16 through bearings 12 . A tank opening is provided in the front part of the inner tank 17, and an openable and closable inner tank door 6 is attached to the tank opening, thereby realizing that the inner tank 17 has a sealed chamber structure.

An external door 5 that can be opened and closed is attached to the housing 19 according to this embodiment.

Example 1
As shown in FIGS. 1 to 5, the drum-type washing machine according to the present embodiment includes an inner tub 17 for independently storing washing water when washing clothes, and the inner tub 17 has a non-perforated inner tub structure. The interior of the washing machine becomes a closed chamber with ventilation holes during washing, and is constructed so that the washing water can be stored independently during washing and rinsing, and between the inner tub 17 and the outer tub 18. There is no water, thereby realizing the purpose of saving water, and avoiding the formation of dirt between the inner tub 17 and the outer tub 18 to keep the tub walls clean and enhance the user experience.

A drain port 39 is provided in the inner tub 17 of this drum-type washing machine, and water is drained from the drain port 39 during the drainage or dehydration process.

This embodiment discloses a sealed drainage device suitable for the drum-type washing machine,
a centrifugal component configured to be moved by centrifugal force due to rotation of the inner tub 17;
a sealing component positioned to seal the drain 39;
Said centrifugal component is connected to the sealing component, the centrifugal movement of the centrifugal component driving the sealing component to open the drain 39 .

In the sealed drainage device provided by this embodiment, the centrifugal part is driven by the centrifugal force generated by the rotation of the inner tub 17, and the centrifugal part drives the sealing part to open the drain port 39 to realize drainage. In principle, by using the operating characteristics of the drum-type washing machine and setting the rotation speed of the inner tub, drainage can be achieved, which is easy to implement. Drainage is realized by opening the parts, and the structure is simple. Therefore, the sealed drainage device according to the present application maintains the sealing of the drainage port during washing and rinsing for a drum-type washing machine having an imperforate inner tub so that the imperforate inner tub can receive water independently. By controlling the rotation speed of the inner tank during water drainage or dehydration, centrifugal water drainage is realized. As a result, the sealing and draining functions of the drum-type washing machine having the imperforate inner tub are realized.

As an embodiment of this embodiment, the centrifugal component and the sealing component can reciprocate along the radial direction of the inner tank 17, and the sealing component moves in the same or opposite direction as the centrifugal movement of the centrifugal component. driven by a centrifugal component.

Considering that the co-directional motion of the sealing part and the centrifugal part requires more mounting members, the centrifugal part moves inward along the radial direction of the inner tank 17 under the action of centrifugal force due to the rotation of the inner tank 17. moving away from the center axis of the tank 17, the sealing part moving toward the center axis of the inner tank 17 along the radial direction of the inner tank 17 under the driving of the centrifugal part, the sealing part and the centrifugal part By moving the inner tub 17 toward each other along the radial direction of the inner tub 17, the total moving distance in the radial direction of both the inner tub 17 is reduced, and the installation space is also reduced.

The sealing component in this embodiment includes a sealing member and an elastic member 43 , and the elastic member 43 acts on the sealing member to keep the sealing member sealingly sealing the drain port 39 . The centrifugal component is then connected to the sealing member, and driven by the centrifugal motion of the centrifugal component, the sealing member moves to open the drain port 39 .

The elastic member 43 according to the present embodiment generates an elastic pretension so that the sealing member seals the drain port 39 to keep the inner tub 17 sealed and contain the washing water.

In order to achieve a seal between the sealing part and the drain port, the present embodiment can adopt the following forms to realize.

Mode 1, the sealing component is in direct sealing contact with the drain port 39 to seal the drain port 39, and the direct sealing contact between the sealing component and the drain port 39 is, for example, electromagnetic sealing, rigid sealing, etc.

Mode 2, the sealing member 40 makes sealing contact between the sealing part and the drain port 39 so as to seal the drain port 39, and the sealing member 40 makes sealing contact, so that the cost is low. , simple and effective.

In one embodiment, the sealing part has a sealing protrusion for circumferentially contact-sealing, and the sealing protrusion on the sealing part is in sealing contact with the inner tank wall or the inner wall of the outer circumference of the drain. Hold to seal the drain. By directly installing the sealing protrusion on the sealing part, it is realized that the sealing part directly seals the drain port 39 .

In one embodiment, at least one of the inner wall of the drain port 39 and the inner tank wall of the outer periphery of the drain port 39 has a sealing protrusion for contact-sealing in the circumferential direction, and the inner wall of the drain port or the outer periphery of the drain port The sealing ridges of the inner tank wall seal the drain port 39 by maintaining sealing contact with the sealing component.

In one embodiment, the sealing member 40 has a sealing protrusion 41 for circumferential contact sealing, the sealing protrusion 41 on the sealing member 40 being at least one part of the sealing part and the drain port 39 . seals the drain port 39 in sealing contact with the .

The sealing protrusion according to the present embodiment is a sealing rib formed by partially protruding at least one of the sealing part, the inner wall of the drain port 39, the inner tank wall around the outer periphery of the drain port 39, and the sealing member 40. may The sealing protrusion according to the present embodiment is a protrusion formed by recessing at least one of the sealing part, the inner wall of the drain port 39, the inner tank wall around the drain port 39, and the sealing member 40. good too.

The sealed drainage device according to the present embodiment includes a case 44 having a guide passage inside, the sealing member is installed in the guide passage to reciprocate the guide part 35, and one end of the guide part 35 is installed. The elastic member 43 includes a sealing portion 36 for sealing the drain port and a connecting portion 34 installed at the other end of the guide portion 35 for connecting the centrifugal component. The other end is installed in the case 44 so as to be in contact with the sealing member.

The elastic member 43 according to this embodiment is a compression spring. The compression spring is fitted in the guide portion 35. The case 44 may have an accommodation groove for accommodating the compression spring. One end of the compression spring is fitted into the housing groove and the other end is in contact with the sealing portion 36 .

The guide part 35 according to this embodiment is a guide column, the sealing part 36 is installed at one end of the guide column and extends in the circumferential direction to form a sealing plug, and the connection part 34 is , is the connecting rotary shaft installed at the other end of the guide column.

The centrifugal component in this embodiment includes a counterweight component 38 and a connecting component 37, one end of the connecting component 37 is connected to the counterweight component 38, and the other end of the connecting component 37 is connected to the sealing component. , the connecting part 37 has a rotating shaft hole 42 rotatably attached to the rotating shaft.

The counterweight component 38 may be integrally molded with the connecting component 37 .

The other end of the connection part 37 according to this embodiment has a connection rotation shaft hole 46 for attaching the connection rotation shaft of the sealing member, and the connection rotation shaft is rotatably attached to the connection rotation shaft hole 46. there is

This embodiment also provides a drum-type washing machine with the sealed drain device,
an inner tub 17 configured to independently contain washing water when washing clothes;
a drain port 39 provided in the inner tub 17 and configured to discharge washing water;
a sealed drainage device installed on the inner wall of the inner tub 17 , the centrifugal component being centrifugally moved by the centrifugal force caused by the rotation of the inner tub 17 to drive the sealing component to open the drain port 39 ;

In order to fill the centrifugal wastewater, the drum-type washing machine in this embodiment is designed in such a way that the total weight M of the centrifugal parts, the rotational speed V of the inner tub 17, the elastic pretension F0 of the elastic member 43 and the sealing Between the total weight m of the stopping member, the following is satisfied. When the rotational speed V of the inner tank 17 reaches the set value V0, the centrifugal parts begin to move centrifugally due to the centrifugal force of the inner tank 17, and the centrifugal force of the centrifugal parts overcomes the elastic pretension F0 and the centrifugal force of the sealing member. By overcoming, the sealing member is driven to move along the radial direction of the inner tank and closer to the central axis of the inner tank, thereby opening the drain port 39 .

A clothes-lifting device is attached to the inner wall of the inner tub 17, and the clothes-lifting device has an inner chamber and a communication hole that communicates the inner chamber with the inside of the inner tub, and the drain port 39 is in the inner chamber. Installed on the tank wall of the inner tank 17, the sealed drain device is installed in the inner chamber.

In this embodiment, the sealed drainage device is installed in the inner chamber to realize the hidden installation of the sealed drainage device, avoid the sealed drainage device from interfering with the clothes in the inner tub, and omit the separate protective cover, It reduces manufacturing costs and simplifies the assembly process.

The clothes lifting device according to this embodiment is a baffle 32, the baffle 32 is attached to the inner wall of the inner tank 17 by a tightening bolt 45, the baffle 32 is provided with a threaded column 55 for assembling the tightening bolt 45, and the inner A through hole 56 is provided in the tank wall of the tank 17 for the fastening bolt 45 to pass through.

By installing as described above, the drain can be hidden inside the baffle of the inner tank, so that the water flow in the inner tank can be discharged to the outside through the hidden drain. At the same time, a sealed drainage device is installed at the drainage port so that the centrifugal force generated by the high-speed rotation of the inner tank can be used to control the sealing parts, and the drainage port can be opened and closed accordingly. , so that when the washing machine runs the dehydration program, the centrifugal force caused by the high-speed rotation of the inner tub acts on the sealing part, and then the drain port automatically opens and the inner tub correspondingly drains the water. .

The present embodiment provides a control method for the drum-type washing machine,
The washing machine controls the rotation speed V of the inner tub 17 to satisfy V≧V0 during the draining or dewatering process, and the centrifugal parts are moved by the centrifugal force caused by the rotation of the inner tub 17 to drive the sealing part. opening said drain 39;
Among them, V0 is a set value.

Therefore, the drum-type washing machine according to the present embodiment realizes drainage and dehydration by controlling the rotational speed of the inner tub, and controls the inner tub to rotate at a rotational speed of at least V0 in the draining stage to drain the water. is realized, and the rotation speed of the inner tank is controlled to be increased to V0 or higher in the dehydration stage to perform dehydration.

Example 2
As shown in FIGS. 1 to 5, the sealed drain device for a drum-type washing machine according to the present embodiment includes an inner tub 17 for independently storing washing water when washing clothes. A drainage port 39 is provided in the tank 17, and the sealed drainage device
It includes a sealing component 30 which is placed in sealing contact with a drain 39 to seal said drain 39 .

The sealed drain device according to the present application seals the drain port 39 with the sealing part 30 , and realizes that the drum-type washing machine with the imperforate inner tub keeps the drain port 39 sealed during washing and rinsing. It also realizes that the imperforate inner tank independently accommodates water.

The sealing component 30 is in direct sealing contact with the drain port 39 to seal the drain port 39 , or the sealing component 30 has a sealing portion 36 and a sealing member 40 installed at the sealing portion 36 . The sealing member 40 of the sealing component 30 is in sealing contact with the drain 39 to seal said drain 39 .

In the sealed drainage device, the sealing part has a sealing projection 41 for contact-sealing in the circumferential direction, and the sealing projection 41 on the sealing part 30 contacts the outer peripheral inner tank wall of the drainage port 39 or the drainage port. The sealing member 40 has a sealing projection 41 for contact-sealing in the circumferential direction, and the sealing projection 41 on the sealing member 40 is sealing the drain in sealing contact with an inner tank wall around the periphery of the drain 39 or an inner wall of the drain 39 .

In order to achieve good circumferential sealing between the sealing protrusion 41 on the sealing part 30 or the sealing member 40 and the inner tank wall around the outer periphery of the drain port 39, the inner tank 17 in this embodiment has a flat inner wall surface. The drain port 39 is provided in the flat portion 57, and the sealing convex portion 41 on the sealing component 30 or the sealing member 40 and the flat portion 57 on the outer periphery of the drain port 39 are circumferentially sealed. The contact is maintained to seal the drain port 39 .

In another embodiment of the present embodiment, the water outlet 39 is provided in the arc-shaped wall of the inner tank, and the sealing protrusion 41 on the sealing part 30 or the sealing member 40 and the outer circumference of the water outlet 39 are connected to each other. A circumferential sealing contact is maintained with the arcuate inner wall surface to seal the drain opening 39 .

The sealing protrusion 41 on the sealing part 30 or the sealing member 40 in this embodiment includes at least one sealing rib of the sealing part 30 or the sealing member 40, each sealing rib having an arc-shaped wall. Maintain circumferential sealing contact with the inner surface.

Preferably, the sealing protrusion 41 on the sealing component 30 or sealing member 40 comprises at least two sealing ribs of the sealing component or sealing member 40 .

The height of each sealing rib is equal and not less than the distance between the innermost sealing rib and the arcuate inner wall surface corresponding to the innermost sealing rib, or the height of the sealing rib is It gradually rises in the direction of disposition from the outside to the inside to maintain circumferential sealing contact with each sealing rib and its corresponding arcuate inner wall surface.

In one embodiment of this embodiment, the sealing rib comprises a sealing rib body portion, a sealing rib end portion for maintaining sealing contact with the drain perimeter wall, and a sealing rib body portion and a sealing rib end portion. It has a transition sealing rib transition.

The sealing rib transition is a chamfer R between the sealing rib end and the sealing rib body.

Said sealing member 40 in this embodiment is a sealing plug made of elastic material, the sealing plug has an open installation chamber, the installation chamber is used to install a sealing part, and the sealing plug has one sealing end surface that seals with the flat portion 57 of the inner tank 17 on the outer circumference of the drain port 39 .

The sealing end face is provided with at least one sealing rib.

The inner tank wall is provided with sealing ribs that are pressed against at least one of the sealing part itself and the sealing member attached to the sealing part, so that the sealing contact surface is provided with a protruding rib structure for local sealing. is formed into a linear seal to further improve the reliability of the sealing, and at least one of the sealing member and the sealing part is installed as an elastic structure to prevent pressure between the sealing member and at least one of the sealing parts and the inner tank wall. The action is used to form elastic deformation, and the elastic deformation is used to seal the contact points, greatly enhancing the sealing effect.

The sealed drainage device in this embodiment includes a centrifugal component that moves under the action of centrifugal force due to the rotation of the inner tub. Said centrifugal component is connected to the sealing component 30 , the centrifugal movement of the centrifugal component driving the sealing component 30 to open the drain 39 .

The sealing part 30 includes a guide part 35 installed in the guide passage and capable of reciprocating movement, a sealing part 36 installed at one end of the guide part 35 for sealing the drain port 39, and a guide part 36. The sealing member 40 is installed on the sealing component 30, including a connecting part 34 installed at the other end for connecting the centrifugal component .

This embodiment also provides a drum-type washing machine with the sealed drain device,
an inner tub 17 configured to independently contain washing water when washing clothes;
a drain port 39 provided in the inner tub 17 and configured to discharge washing water;
a sealed drain device installed on the inner wall of the inner tub 17, the sealing part opening the drain port 39 when the rotational speed of the inner tub 17 reaches a set value V0.

In one embodiment, the drain port 39 has an extending wall between itself and the inner wall of the inner tank 17, and the drain port 39 protrudes inwardly or outwardly from the inner tank wall of the inner tank 17 so that the sealing A stop piece 30 extends into the elongated wall and maintains circumferential sealing contact with the inner wall of the elongated wall to seal the drain 39 and further seals between the seal piece 30 and the drain 39 . Increase effectiveness.

In another embodiment, the drain port 39 is flush with the inner wall of the inner tank 17, and the sealing part 30 is in circumferential sealing contact with the inner tank wall around the outer periphery of the drain port 39; Sealing contact with the inner peripheral wall of port 39 seals the drain port.

Example 3
As shown in FIGS. 1 and 6 to 8, the drum-type washing machine according to the present embodiment is a sealed drainage device, and the drum-type washing machine has an inner tub 17 for independently storing washing water when washing clothes. The inner tank 17 is provided with a drain port 39, and the sealed drain device is
It includes a sealing component which is placed in sealing contact with the drain 39 to seal said drain.

Said sealing component comprises a first sealing component 47 having a plurality of cross-sections of unequal cross-sectional areas along the central axis, such that the outer peripheral wall of at least one cross-section is in sealing contact in the circumferential direction of the drain opening 39 . configured to seal the drain 39 .

The sealing part of the sealed drain device according to this embodiment has a first sealing part 47 with a variable cross section, so that the first sealing part 47 can better seal the drain port 39 in the circumferential direction, Ensures the sealing effect of the drain.

In one embodiment of this embodiment, said first sealing component 47 includes a proximal end located adjacent to the drain and a distal end located away from said drain, said first sealing component 47 , the cross-sectional area of the cross-section along the central axis of the first sealing component 47 gradually increases from the proximal end to the distal end.

The first sealing component 47 is a tapered or frusto-conical sealing plug whose cross-sectional area gradually increases from the proximal end to the distal end.

As one embodiment of the present embodiment, the inner tank 17 has a flat portion 57 with a flat inner wall surface, the drain port 39 is provided in the flat portion 57, and at least one section of the first sealing part 47 is is in sealing contact with the drain port 39 in the circumferential direction to seal the drain port 39 .
Alternatively, the drain port 39 is provided in the arc-shaped wall of the inner tub 17 , and at least one cross-sectional outer wall of the first sealing member 47 is in sealing contact with the drain port 39 in the circumferential direction to close the drain port 39 . Seal.

The sealing part in this embodiment further includes a second sealing part around the outer periphery of the first sealing part 47, and the second sealing part is in sealing contact with the inner tank wall around the outer periphery of the drain port 39 in the circumferential direction. . This embodiment achieves multi-sealing between the sealing part and the drain hole 39 by means of the first sealing part and the second sealing part, so as to ensure the sealing effect of the drain hole 39 and prevent water leakage.

The second sealing part according to this embodiment achieves a first double sealing around the drain, and the sealing contact between the first sealing part and the drain guarantees a second double sealing of the drain.

As one embodiment of this embodiment, the second sealing part is installed on the outer periphery of the first sealing part 47 and includes a sealing protrusion 41 for contact sealing, and the sealing protrusion 41 on the second sealing part is , maintain sealing contact with the inner tank wall around the perimeter of the drain 39 to seal the drain 39 .

The first sealing part 47 and the second sealing part are each made of an elastic material and assembled with the respective sealing part, or the first sealing part 47 and the second sealing part are each made of an elastic material and the first sealing part is assembled with the sealing part. The sealing part is assembled to the sealing part after being integrally connected with the second sealing part, or said first sealing part 47 and the second sealing part are sealing plugs integrally made of elastic material. and the sealing plug is assembled to the sealing part.

The sealed drainage device according to this embodiment further comprises a centrifugal part that moves under the action of centrifugal force caused by the rotation of the inner tub, the centrifugal part is connected to the sealing part, and the centrifugal movement of the centrifugal part moves the sealing part. The drain port 39 is opened by driving.

The sealing parts include a guide part 35 installed in the guide passage and capable of reciprocating movement, a sealing part 36 installed at one end of the guide part 35 for sealing the drain port 39, and the guide part. and a connecting portion 34 for connecting a centrifugal component located at an end, said first sealing component or said second sealing component being located in a sealing portion 36 .

This embodiment also discloses a drum-type washing machine with the sealed drain device,
an inner tub 17 configured to independently contain washing water when washing clothes;
a drain port 39 provided in the inner tub 17 and configured to discharge washing water;
a sealed drain device installed on the inner wall of the inner tub 17, the sealing part opening the drain port 39 when the rotational speed of the inner tub 17 reaches a set value V0.

The drain port 39 has an extension wall 48 extending between it and the inner wall of the inner tank 17, and the drain port 39 projects inwardly or outwardly from the tank wall of the inner tank 17. A first sealing component 47 nests within the elongated wall 48 such that the outer peripheral wall of at least one cross-section is in circumferential sealing contact with the inner peripheral wall of the elongated wall 48 to seal the drain.

In order to further enhance the sealing effect of the first sealing member 47, the first sealing member 47 seals the drain port 39 by surface contact or line contact with the inner peripheral wall of the drain port extending wall 48. .

The inner peripheral wall of the extension wall 48 can be fitted with the shape of the outer peripheral wall of the first sealing part 47 .

The first sealing part 47 is a tapered or truncated sealing plug whose cross-sectional area gradually increases from the proximal end to the distal end of the drain, and the extended wall 48 of the drain is , a circular truncated peripheral wall whose internal cross-sectional area gradually decreases along the direction away from the central axis of the inner tank.

Example 4
As shown in FIGS. 1 and 9 to 13, a drum-type washing machine according to this embodiment,
an inner tub 17 configured to independently contain washing water when washing clothes;
a drain port 39 provided in the inner tub 17 and configured to discharge washing water;
a mounting member 50 mounted on the drain port 39 on the inner wall of the inner tank 17;
a mounting member drain port 51 provided in the mounting member 50 and connected to the drain port 39;
and a sealed drain including a sealing component for sealing the fitting drain 51 .

The mounting member 50 in this embodiment is sealingly connected to the inner tank wall.

The drain port 39 is provided on the inner wall of the inner tank 17, the mounting member 50 includes a mounting member connecting portion, and the mounting member connecting portion and the inner tank wall on the outer periphery of the drain port 39 are tightly connected. .

The mounting member 50 in this embodiment further comprises an end cover portion, two opposing side walls of the flat portion holding a sealing connection with the inner wall of the inner tank 17, and the other two opposing side walls of the flat portion. each connect to an end cover portion which maintains a sealing connection with the inner wall of the inner vessel 17 .

The flat portion may be integrally molded with the end cover portion.

In this embodiment, by attaching the mounting member 50 to the inner wall of the inner tank, the mounting member 50 has a mounting member drain port 51 connected to the drain port 39, and the sealing drain device seals the mounting member drain port 51. The inner tank drainage port 39 can be sealed without changing the arc-shaped wall structure of the inner tank, and the mounting member 50 achieves a sealed assembly of the sealed drain device, the mounting structure is simple, and Since the mounting member 50 has a flat portion that sealingly fits with the sealing component, the sealing effect is better.

The drain port 39 is provided in the arc-shaped wall of the inner tank 17, the mounting member 50 includes a mounting member connection portion, and the connection portion of the mounting member and the inner tank wall around the outer circumference of the drain port 39 are sealed. Connected.

The flat portion is a flat plate, the end cover portion includes an end cover plate, two opposite side walls of the flat plate maintain a sealing connection with the arc-shaped inner wall of the inner tank, and the flat plate The other two opposing side walls are each connected to an end cover plate which maintains a sealing connection with the arcuate inner wall of the inner vessel.

The flat plate may be integrally formed with the end cover plate.

As shown in FIGS. 11 and 12, as an embodiment of this embodiment, the mounting member 50 is provided with a sealing ring 52 between the inner wall of the inner tank 17 to achieve a sealed connection, or the The mounting member 50 is welded to the inner wall of the inner tank 17 .

In this embodiment, the opening cross-sectional area of the drain port 39 is equal to or larger than the cross-sectional area of the mounting member drain port 51, so that the water discharged from the mounting member drain port 51 is immediately discharged from the drain port 39 at the time of drainage. Make sure it is smooth.

Both the drain port 39 and the mounting member drain port 51 are circular holes, and the diameter of the drain port 39 is equal to or larger than the diameter of the mounting drain port 51 .

The central axis of the drain port 39 is aligned with the central axis of the mounting member drain port 51, so that the water discharged from the mounting member drain port 51 flows into the drain port 39 and is discharged. It is possible to avoid bending the outflow path from the port 51 to the drain port 39 to affect the drain effect.

In order to enhance the sealing effect between the sealed drainage device and the mounting member drain port 51, a sealing fitting portion 54 is installed on the outer periphery of the mounting member drain port 51 to sealingly fit with the sealing part on the flat portion. .

The sealing fitting portion 54 is at least one sealing rib installed on the outer circumference of the mounting member outlet 51, and the sealing rib is in sealing contact with the sealing surface of the sealing component.

A mounting member extending wall 53 is provided between the mounting member drain port 51 and the flat portion, and the mounting member drain port 51 protrudes inwardly or outwardly from the flat portion to provide a first sealing to the sealing component. A component 47 is installed such that the first sealing component 47 extends into the mounting member extended wall 53 and the outer peripheral wall of at least one cross-section maintains sealing contact with the inner peripheral wall of the mounting member extended wall 53 .

The first sealing part 47 and the inner peripheral wall of the mounting member extension wall 53 are in surface contact or line contact to seal the mounting member drain port 51 .

The shape of the inner peripheral wall of the mounting member extending wall 53 and the shape of the outer peripheral wall of the first sealing part 47 can be fitted.

The first sealing component 47 is a tapered or truncated sealing plug whose cross-sectional area gradually increases from the proximal end to the distal end of the mounting member outlet, and the mounting member extending wall 53 . is a truncated peripheral wall whose internal cross-sectional area gradually decreases along the direction away from the central axis of the inner tank from the flat portion.

A clothes-lifting device is installed on the inner wall of the inner tub 17. The clothes-lifting device has an inner chamber and a communication hole 33 for communicating between the inner chamber and the inside of the inner tub, and the drain port is in the inner chamber. It is provided on the tank wall of the inner tank, and both the mounting member 50 and the sealed drainage device are installed in the inner chamber.

The clothes lifting device according to the present embodiment is a baffle 32. The baffle 32 has a baffle base portion 58 attached to the inner wall of the inner tank and a baffle convex portion 49 projecting into the inner tank 17. Mounted on the projection 49 , the mounting member 50 is circumferentially and sealingly connected to the baffle base 58 .

The sealed drainage device according to this embodiment further includes a centrifugal part that moves under the action of centrifugal force caused by the rotation of the inner tub 17, the centrifugal part is connected to the sealing part, and the centrifugal movement of the centrifugal part is the sealing part. The mounting member drain port 51 is opened by driving the part.

Example 5
As shown in FIGS. 1, 14 and 15, the drum-type washing machine according to this embodiment has
an inner tub 17 configured to independently contain washing water when washing clothes;
an assembly through-hole provided in the inner tank 17;
a mounting member 50 sealingly mounted within the assembly through hole;
a mounting member drain port 51 provided in the mounting member 50;
and a sealed drain including a sealing component for sealing the fitting drain 51 .

In this embodiment, by attaching the mounting member 50 to the assembly through-hole of the inner tank, the mounting member 50 has the mounting member drain port 51, and the inner tank is closed by sealing the mounting member drain port 51 with the sealing drain device. 17 drainage can be sealed, without changing the arc-shaped wall structure of the inner tank, the sealing assembly of the sealed drainage device can be realized by the mounting member 50, the mounting structure is simple, and the mounting member is sealed. The sealing effect is better because it has a flat part that sealingly fits with the stop part.

The assembly through hole is provided in the tank wall of the inner tank 17, the mounting member 50 includes a mounting member connection portion, and the mounting member connection portion and the inner peripheral wall of the assembly through hole are sealingly connected.

The mounting member 50 in this embodiment includes a flat portion, and the mounting member drain port 51 is provided in the flat portion.

In order to realize that the sealing part seals the mounting member drain hole 51, as an embodiment of this embodiment, the flat part is sealingly fitted to the outer wall of the mounting member drain hole 51 with the sealing part. A sealing fit 54 is provided.

The sealing fitting portion 54 is at least one sealing rib installed on the outer periphery of the mounting member outlet 51, and the sealing rib is in sealing contact with the sealing component.

In another embodiment of this embodiment, the sealing part has at least one sealing rib, and the at least one sealing rib maintains sealing contact with a peripheral flat portion of the mounting member outlet 51. and a sealing member 40 is installed on the sealing part, and the sealing member 40 has at least one sealing rib, and the at least one sealing rib is in contact with the outer wall surface of the flat portion of the outer circumference of the mounting member outlet 51. and maintaining a sealed contact.

In another embodiment of the present embodiment, at least one first sealing rib is installed on the outer wall of the outer periphery of the mounting member outlet 51 on the flat part, and the sealing member is installed with the sealing member 40, and the sealing member is 40 has at least one second sealing rib, staggering said first and second sealing ribs, said first sealing rib maintaining sealing contact with a flat end face of sealing member 40; The second sealing rib maintains sealing contact with a flat flat portion of the periphery of the mounting member outlet 51 .

In order to further enhance the sealing effect of the sealing part against the mounting member drain, a mounting member extending wall 53 is provided between the mounting member drain 51 and the flat portion, and the mounting member drain 51 extends inside the flat portion. A first sealing component 47 is installed on the sealing component, the first sealing component 47 is inserted into the mounting member extending wall 53, and at least one of the first sealing component 47 An outer peripheral wall of two cross-sections maintains circumferentially sealing contact with an inner peripheral wall of the mounting member extension wall 53 .

In one embodiment, the first sealing part 47 and the inner peripheral wall of the mounting member extension wall 53 are in surface contact or line contact to seal the mounting member drain.

In one embodiment, the inner peripheral wall of the mounting member extension wall 53 is fitted with the shape of the outer peripheral wall of the first sealing component 47 .

In one embodiment, said first sealing component 47 is a tapered sealing plug with a cross-sectional cross-sectional area that gradually increases from the proximal end to the distal end with respect to the fitting member outlet, and the fitting extending wall. Reference numeral 53 denotes a peripheral wall of a round table whose internal cross-sectional area gradually decreases in the direction away from the central axis of the inner tank from the flat portion.

A clothes-lifting device is installed on the inner wall of the inner tub 17 in this embodiment, and the clothes-lifting device has an inner chamber and a communication hole that communicates between the inner chamber and the inside of the inner tub 17, and the assembly through-hole is installed on the tank wall of the inner tank in the inner chamber, and the sealed drain device is installed in the inner chamber.

The sealed drainage device according to the present embodiment further includes a centrifugal part that moves under the action of centrifugal force caused by the rotation of the inner tank, the centrifugal part is connected to the sealing part, and the centrifugal movement of the centrifugal part is the sealing part. to open the mounting member drain port 51 .

Said centrifugal component includes a counterweight component 38 and a connecting component 37, one end of the connecting component 37 is connected to the counterweight component 38, the other end of the connecting component 37 is connected to the sealing component, and the connecting component 37 is connected to the sealing component. has a rotating shaft hole 42 rotatably attached to the rotating shaft in the middle part of it.

The counterweight component 38 may be integrally molded with the connecting component 37 .

Example 6
The difference between this embodiment and the second embodiment shown in FIGS. 1 to 5 is that, as shown in FIGS. At least one round sealing protrusion 41 is provided on the body wall 171 of the inner tank 17 at the outer periphery of the drain port 39 to achieve the sealing contact of the drain port 39, and the sealing protrusion 41 at the drain port is the sealing part 30 or the sealing The drain port 39 is sealed in sealing contact with a sealing member 40 attached to the stop piece 30 .

As shown in FIGS. 1 and 16 to 20, in this embodiment, a housing space 172 is formed so as to be surrounded by a body wall 171 and configured to independently store washing water, and the body of the inner tub 17 is An inner tub 17 of a drum-type washing machine, which is installed on a wall 171 , has a sealing projection 41 installed on the solid wall 171 in the outer peripheral area, and includes at least one drain port 39 used to drain water from the inner tub. is introduced.

In this embodiment, the sealing protrusion 41 is fitted with a sealing part 30 for sealing the drainage port 39, and both the sealing protrusion 41 and the sealing part 30 are components of the sealed drainage device in this embodiment. be. The sealing projection according to this embodiment has a sealing projection 41 on the physical wall whose height changes along the radial direction of the inner tank. It includes, but is not limited to, a structure that is a sealing projection 41 protruding from the inner tub 17 toward the center thereof. The sealing part 30 has a sealing surface 401 against the sealing protrusion 41 at the drain, and the sealing surface is flat or smoothly curved.

The sealing projection 41 at the drain port in this embodiment may consist of a protruding end of a sealing rib protruding in the direction toward the center of the inner tank on the physical wall, or in the direction toward the outer side of the inner tank on the physical wall. It may be composed of an open outer periphery at the tip of a recessed groove.

In this embodiment, the sealing protrusion 41 in the drain extends intermittently or continuously at least once along the periphery of the drain. At least one sealing projection 41 is installed in a plurality of radial directions of the drain port 39 to ensure the sealing performance of the drain port in a plurality of directions.

In this embodiment, the line connecting the centers of the sealing protrusions 41 on each side of the drain is concentrically installed with the center of the drain 39, and the sealing protrusions 41 on each side of the drain are all drains. It is installed symmetrically about the center of 39 to ensure the pressure balance around the drain port and further improve the sealing performance.

In this embodiment, the end surface of the sealing protrusion 41 at the drain port is provided with a circular connecting curved surface 411 . In order to ensure the sealing performance between the sealing protrusion 41 at the drain and the sealing member 40 or the sealing part 30 , the arc connecting curved surface 411 on the end surface of the sealing protrusion 41 at the drain is installed as follows. At least one of both sides of the sealing projection 41 of the drain has a circular chamfered surface, or the end surface of the sealing projection 41 of the drain is directly composed of a whole curved surface.

The end surface of the sealing protrusion 41 in the drain port and the inner and outer peripheral sides of the sealing protrusion 41 are provided with an arc connecting curved surface, respectively, so that the sealing protrusion in the drain port contacting the sealing part 30 or the sealing member 40. Both ends of the end surface of the portion 41 are each provided with a circular chamfer R, and the center of the end of the sealing projection 41 at the drain is a flat portion, and the sealing part 30 or the sealing member 40 and the sealing projection 41 at the drain are formed. Ensure the width of the contact surface between and improve the crimp sealing performance.

In order to achieve good circumferential sealing between the sealing protrusion 41 and the sealing member 40 or the sealing part 30 at the drain port, the inner tank 17 in this embodiment has a flat portion 57 with a flat inner wall surface, The drain port 39 is provided in a flat portion 57, the sealing protrusion 41 in the drain port is in the flat portion 57, and the flat portion 57 extends at least along the radial direction of the inner tank of the sealing member 40 to cover the projection area on the inner tank wall. cover and maintain circumferential sealing contact between the sealing member 40 and the outer peripheral flat portion 57 of the drain port 39 to enhance the sealing of the drain port.

In another embodiment, the drain port 39 is provided in the arc-shaped wall of the inner tub 17, and the sealing protrusion 41 of the sealing part 30 or the sealing member 40 and the arc-shaped wall of the outer circumference of the drain port 39 The drain port 39 is sealed by maintaining circumferential sealing contact with the inner surface.

In this embodiment, the sealing protrusion 41 of the sealing component 30 or the sealing member 40 comprises at least two sealing ribs distributed along the radial direction of the sealing component 30 or the sealing member 40, and the at least two sealing ribs are in circumferential sealing contact with the arcuate wall inner surface of the inner tank 17, the heights of the sealing ribs are equal, and they correspond to the innermost sealing rib and the innermost sealing rib. or the height of the sealing ribs gradually increases in the direction of arrangement from the outside to the inside, and each sealing rib and each sealing rib has a corresponding arc shape maintain circumferential sealing contact with the inner wall surface of the

In this embodiment, the sealing component 30 includes one sealing member 40 that seals the drain in sealing contact with the body wall of the inner tub 17 .

In this embodiment, the sealing member 40 and the sealing portion provided on the body wall of the inner tank 17 are pressed against each other to cause elastic deformation, thereby sealing the joint between the two. The sealing member 40 is made of an elastic material, and when the sealing member 40 and the sealing portion press against each other, the sealing member 40 elastically deforms itself to seal the joint.

In this embodiment, the wall of the inner tank 17 is provided with a baffle 32 fitted corresponding to a drain port 39. The baffle 32 is hollow and the inside of the inner tank 17 is controlled by the holes in the baffle 32. , the drain port 39 installed in the wall of the inner tank 17 is connected to the hollow part of the baffle 32 , and the sealing part installed in the drain port 39 is inside the baffle 32 .

Example 7
This embodiment is based on the above-mentioned Embodiment 6, and further has the following technical features, in order to realize the sealing contact between the sealing parts of the sealed drainage device and the inner tank wall at the drainage port 39, the drainage on the inner tank wall at port 39,
At least one structure of a bent edge 48 bent to the outside of the inner tank 17 and a bead extending from the inner wall of the drain port 39 to the outside of the inner tank 17 is provided, and at least one of the bent edge and the bead is cylindrical. Alternatively, it is tapered, and the sealing component itself and the sealing member 40 attached to the sealing component are in sealing contact with at least one of the folding edge 48 and the bead to provide a sealing process for the drain port 39 .

The folded edge 48 in FIGS. 21-23 may be another form of the extended wall 48 in FIGS. 6-8.

As shown in FIGS. 21 to 23, this embodiment introduces a sealed drain device for a drum-type washing machine. 17 is provided with a drain 39 and the sealed drain includes a sealing component configured to sealingly contact the drain 39 and seal said drain 39, the sealing component being itself or a seal. The sealing member 40 attached to the part is used to seal the drain port 39, and the inner tank wall at the drain port 39 is provided with a bent edge 48 that bends to the outside of the inner tank 17, and the sealing part or Sealing member 40 is in sealing contact with crease 48 to seal drain opening 39 .

The sealed drainage device according to the present application seals the drainage port 39 with a sealing component, and realizes that the drum-type washing machine having a non-porous inner tub keeps the drainage port 39 sealed during washing and rinsing, It is also realized that the imperforate inner tank independently contains water.

In this embodiment, the sealing component includes one sealing member 40 in sealing contact with the inner tank wall to seal the drain opening 39, the sealing member 40 being at least one of the inner tank wall and the crease 48. The two parts press against each other to cause elastic deformation, and the elastic deformation seals the joint between the two.

In this embodiment, the sealing member 40 includes a protrusion 47 installed on the sealing member side and protruding toward the drain port, at least a part of the protrusion 47 protruding from the drain port 39 along the axial direction of the protrusion, A protrusion 47 seals against a crease 48 at the outlet 39 . The diameter of the projection 47 gradually decreases in the direction away from the side of the sealing component and exhibits a tapered shape coaxial with the drain port 39, and the diameter of the smallest end of the tapered projection 47 is the diameter of the drain. the diameter of the tapered protrusion 47 is smaller than the diameter of the mouth 39 and the diameter of the maximum end of the tapered protrusion 47 is larger than the diameter of the drain 39, so that the protrusion 47 can enter correspondingly the crease 48 in the drain 39; The projecting portion 47 directly presses against the folded edge and deforms to seal the contact portion. At the same time, the major end diameter of the protrusion 47 should be set larger than the major end diameter of the tapered bent end 48 in order to ensure a sealing contact between the two.

The protrusion 47 in FIGS. 21-23 may be another form of the first sealing component 47 in FIGS. 6-8, 13 and 15. FIG.

In this embodiment, the inner tub structure of the drum-type washing machine is introduced. and at least one drain port 39 installed in the physical wall of the tank 17 and used for discharging the water in the inner bath, and a first seal is installed in the physical wall in the outer peripheral region of the drain port 39. , and the inner wall of the drain port 39 are provided with a second seal.

The first sealing part in this embodiment is the sealing convex part 41 at the drainage port installed in the body wall of the inner tank 17 described in the third embodiment, and the second sealing part is the inner tank 17 described in this embodiment. a cylindrical or tapered bent edge 48 and/or bead extending outside the tub located at the drain outlet 39 of the .

In this embodiment, one of the first sealing portion and the second sealing portion may be selected and installed on the premise that the sealing of the inner tank is guaranteed.

Example 8
This embodiment is based on the above embodiment and has the following technical features. As shown in FIGS. ,
an inner tub 17 which is provided with a drain port 39 and independently stores washing water when washing clothes;
and a sealing component configured to seal the outlet 39 of the inner tub 17, the sealing component being provided with a sealing member 40, the sealing member 40 sealingly contacting the wall of the inner tub 17 to close the drain. Seal 39 or open drain 39 away.

By installing the sealing member on the sealing part, the sealing member, which moves together with the sealing part and is independently installed, makes contact with the inner tank wall, and uses the pressure force in the contact process. Sealing the contact points not only improves the sealing performance, but also optimizes the installation of the device to increase the speed of assembly and maintenance. The clamping force received by the sealing member is increased to remarkably improve the sealing effect.

In this embodiment, the sealing member 40 presses against the wall of the inner tub 17 to cause elastic deformation, and the joint between the two is sealed by the elastic deformation. In order to achieve the effect of sealing between the sealing member and the inner vessel by elastic deformation, the sealing member may be made of an elastic material, of course, the wall portion of the inner vessel 17 correspondingly contacting the sealing member 40 is The sealing member 40 may be installed to be constructed of an elastic material, and the elastic deformation of at least one of the sealing member 40 and the wall of the inner bath 17 is used to achieve sealing contact.

Example 9
This embodiment is based on the above embodiment and has the following technical features. As shown in FIGS. The inner tub 17 is provided with a drain port 39, and the sealing surface of the sealing part is directly in sealing contact with the wall of the inner tub 17 to form the drain port 39. Seal or open drain port 39 away.

By directly sealing the sealing parts with the inner tank wall, the contact points are sealed by using the pressure force of the two contacting, not only improving the sealing performance, but also optimizing the installation of the device for assembly and maintenance. By increasing the speed and at the same time constructing and using relatively telescoping sealing parts directly as sealing members, not only the number of parts is reduced, but also the compactness of the device is optimized.

In this embodiment, at least one of the sealing part and the wall of the inner tank 17 in contact with the sealing part is made of a material that can be elastically deformed. elastically deforms to seal the corresponding contact points.

In this embodiment, both the sealing part and the wall of the inner tank 17 can be made of non-elastic materials, such as metal or other materials, and the force of the direct pressure action between them can be used to
correspondingly by realizing at least one sealing contact between the sealing part and the wall of the inner tank 17 around the perimeter of the drain port 39 and the sealing contact between the sealing part and the inner wall surface of the drain port 39; The drain port 39 is sealed.

In this embodiment, in order to improve the sealing performance, the sealed drainage device
A structure in which the sealing part is provided with at least one sealing protrusion, and the sealing protrusion on the sealing part is in sealing contact with the inner wall surface of the outer periphery of the drain port to correspondingly seal the drain port;
The wall of the inner tub 17 on the periphery of the drain port 39 has at least one round sealing protrusion, and the sealing protrusion on the periphery of the drain port is in sealing contact with the sealing part to correspondingly seal the drain port. structure, and
At least one structure in which the inner wall of the drain 39 has at least one sealing protrusion, and the sealing protrusion of the inner wall of the drain is in sealing contact with a sealing component to correspondingly seal the drain. including one.

In this embodiment, one of the sealing parts and the wall surface of the inner tank 17 on the outer circumference of the drain port 39 is selected, and a sealing projection is installed to face it, and the other parts are correspondingly installed. The surface is flat or smoothly curved, and when the sealing part contacts the inner tank wall, the sealing projection on the outer circumference of the sealing part or the drain port restricts and presses the corresponding surface and position, A line contact between the two is achieved to enhance the sealing performance.

In this embodiment, the sealing part has a sealing surface that seals against the drain opening 39, the sealing surface being projected on the wall of the inner tank 17 along the radial direction of the tank at least covering the drain opening 39, and the sealing surface are installed in the same shape facing the wall of the inner tank 17 on the outer circumference of the drain port 39, and are joined correspondingly to make sealing contact. The sealing method in this embodiment is that the wall of the inner tank 17 on the outer periphery of the drain port 39 is a flat portion 57 parallel to the sealing surface of the sealing part, and the flat portion 57 has at least the sealing surface on the wall of the inner tank 17. At least one of covering the projection area and the sealing surface of the sealing part being an arcuate surface having the same shape as the opposing wall of the inner tank 17 .

In this embodiment, the sealing part is movably mounted on the wall of the inner tank 17 by the mounting structure, and the sealing part is pressed by the elasticity of the spring member to correspondingly seal the drain port 39, and the sealing part connects to the centrifugal component, the centrifugal movement of the centrifugal component drives the sealing component to open said drain.

In this embodiment, the sealing surface of the sealing component is provided with a protruding portion 47 protruding toward the drain port 39 side, and the drain port 39 is provided with a bent edge 48 having a tapered surface or a circular truncated surface protruding away from the sealing component. A protrusion 47 is installed to face the bent edge 48 so that the protrusion 47 corresponds to the bent edge 48 of the drain port 39 and is sealed. In this embodiment, the outer wall of the protruding portion 47 faces the inner wall of the bent edge 48 and is installed in the same shape so that the protruding portion 47 faces and seals the bent edge 48 to seal the drain port 39 .

Claims (9)

a storage space formed to be surrounded by one solid wall and configured to independently store washing water;
at least one drain installed in the body wall and configured to drain water from the inner tank;
A sealing protrusion is installed on the physical wall of the outer peripheral region of the drain.
The inner tub of a drum-type washing machine. 2. The inner tub of a drum-type washing machine according to claim 1 , wherein said sealing convex portion is fitted with a sealing part that seals said drain port. The sealing convex portion is a sealing convex portion that protrudes from a flat portion around the drain port in the physical wall of the inner tank toward the center of the inner tank,
The sealing part has a sealing surface, which is a flat surface or a smoothly curved surface, facing the sealing projection at the drain port.
The inner tub of the drum-type washing machine according to claim 2. 4. The inner tub of a drum-type washing machine according to claim 3, wherein the sealing protrusion in the drain port extends intermittently or continuously at least once along the outer periphery of the drain port. 5. The inner tub of a drum-type washing machine according to claim 3 or 4, wherein an end surface of said sealing protrusion in said drain port is provided with a single arc-connecting curved surface. The inner tub according to claim 1, which is configured as a container for containing water when the washing machine executes a washing program;
a sealing part installed at the drain port of the inner tank and configured to fit with the sealing protrusion of the inner tank so as to seal or open the drain port;
drum type washing machine including. 7. The drum -type washing machine according to claim 6, wherein the sealing component includes a sealing member sealingly contacting the solid wall of the inner tub to seal the drain port. The sealing member is elastically deformed by pressing against the sealing projection provided on the body wall of the inner tank, and the elastic deformation seals the joint between the sealing member and the sealing projection. 7. The drum-type washing machine according to 7. A baffle at the outlet is provided on the physical wall of the inner tank,
The inside of the baffle is hollow and connected to the inside of the inner tank through a hole in the baffle,
the drain port installed in the physical wall of the inner tank is connected to the hollow portion of the baffle;
the sealing component located at the drain is inside the baffle;
The drum-type washing machine according to any one of claims 6-8.

Images