JP7368663B2 - Drum washing machine drainage sealing device and drum washing machine - Google Patents

Description

The present invention relates to the technical field of laundry equipment, and specifically relates to a drainage sealing device for a drum washing machine, a drum washing machine, and a control method.

Washing machines are the most widely used household appliances in daily life, freeing people from the hassle of washing clothes and providing great convenience. However, washing machines also have certain drawbacks, such as the length of time they take and the amount of water they use. On the other hand, with the development of society, water resources are becoming increasingly important as an important natural resource. Along with this, people's awareness of water conservation is increasing, and it is especially important to realize the water-saving function of washing machines.

In order to solve the problem of water conservation in washing machines, patent applications such as Patent Document 1 have been filed up to now. Patent Document 1 is a Chinese invention patent entitled "Drum Washing Machine". The present invention relates to a drum washing machine including a housing, and an inner tub and an outer tub are provided within the housing. A door seal is provided between the outer tank and the housing, and the inner tank is connected to a drive device. The inner tank is a holeless inner tank. Further, the inner tank is a conical tank with a small diameter at the bottom and a large diameter at the mouth. The mouth of the inner tank contracts inward in an arc shape. Further, the door seal is provided with a water supply conduit. One end of the water supply conduit is connected to the wash water rapid heating device, and the other end of the water supply conduit extends through the door seal and into the inner tank. The outer tank is provided with a drain port and a water pressure detection device. As is clear from the above technical solution, the inner tank in the invention is a holeless inner tank, and water is supplied to the inner tank by a water supply pipe installed in the door seal, and the shape of the inner tank itself is used to supply water to the inner tank. Drainage is achieved during the dehydration process. By doing this, it is possible to avoid water accumulation between the inner tank and the outer tank, resulting in a significant saving in the amount of water used for cleaning.

Although the above-mentioned invention provides a drum washing machine having an inner tub without holes, it is merely a design in which the inner tub of a conventional drum washing machine has a structure without holes, and has little practical significance. This is because in order to wash clothes, it is necessary to soak them in a certain amount of washing water, and in order to realize the effect of soaking, a certain amount of water must be maintained in the non-porous inner tank. Furthermore, in this case, the load on the motor increases and problems such as power consumption also arise. In addition, in the drum washing machine water supply method disclosed in Patent Document 1, water passes through a door seal. However, the main role of the door seal is to seal the mouth of the outer tub of the washing machine. Therefore, if a water supply conduit is installed in the door seal, the sealing effect of the door seal is likely to be impaired, making it difficult to achieve sealing. Moreover, in Patent Document 1, detection of the water supply level in the inner tank cannot be realized.

In addition, in the case of a drum washing machine having an inner tub without holes, keeping the drain port of the inner tub sealed is key to preventing water from existing between the inner tub and the outer tub. In the prior art, there is a method in which a sealing member is installed at a drain port, and a movable member sealingly contacts the sealing member to close the drain port. However, generally, the wall of the inner tank is often arc-shaped, and mounting the sealing member on the arc-shaped inner tank wall is somewhat complicated. In addition, it is difficult to maintain stability and easily falls off, making it impossible for the movable member to close the drain port, resulting in dripping or leakage.

In view of the above, the present invention is proposed.

Chinese Patent No. 201410215346.3

In order to solve the above problems, a first object of the present invention is to provide a sealed drainage device for a drum washing machine. Specifically, the following technical measures will be adopted.

The sealed drainage device for drum washing machines is one in which washing water is stored independently when washing clothes. Contains occluding parts. The closure part is provided with a sealing member. The sealing member sealingly contacts the inner tank wall to close the drain or separates to open the drain.

Further, the sealing member is elastically deformed by pressing against the inner tank wall, and the elastic deformation is used to seal these contact points.

Furthermore, the sealing member is in sealing contact with an inner tub wall around the outer periphery of the drain, and/or the sealing member is in sealing contact with an inner wall of the drain, so as to close the drain accordingly.

Further, the sealing member is provided with a sealing protrusion having at least one circumference, and the sealing protrusion is in sealing contact with the wall surface of the inner tank at the outer periphery of the drain, thereby appropriately closing the drain. and/or the inner tank wall at the outer periphery of the drain port has at least one round sealing protrusion, and the sealing protrusion contacts the sealing member in a sealing manner to appropriately close the drain port. and/or the inner wall of the drain has at least one circumferential sealing protrusion, the sealing protrusion being in sealing contact with the sealing member to accordingly close the drain. Preferably, the sealing members and the sealing protrusions provided on the wall surface of the inner tank at the outer periphery of the drain port are arranged alternately.

Furthermore, the sealing member has a sealing surface that seals against the drain opening and one another, the projection of the sealing surface on the inner tank wall at least covering the drain opening. The sealing surface is provided in the same shape opposite to the inner tank wall on the outer periphery of the drain port, and is in close contact with the inner tank wall in an appropriate and sealing manner.

Furthermore, the inner tank wall around the outer periphery of the drain port is a flat portion parallel to the sealing surface. The flat portion at least covers a projection area on the inner tank wall on the sealing surface. And/or the sealing surface of the sealing member is an arcuate surface of the same shape that faces the inner tank wall.

Further, the closing component is mounted on the inner tank wall by a mounting structure so as to be movable in the axial direction of the drain port. A spring member is sandwiched between the closing component and the mounting structure to push the sealing member and close the drain port. The closing component is connected to the weight directly or through a transmission structure, and when the rotational speed of the inner tank exceeds a predetermined rotational speed V0, the closing component moves toward the center of the tank due to the centrifugal force of the weight. , the sealing member is removed from the inner tank wall to open the drain port.

Furthermore, the sealing surface of the sealing member is provided with a protrusion that protrudes toward the drain port. The drain port portion is provided with a fold that projects toward the side away from the blocking component. The protrusion and the fold are provided opposite each other, and the protrusion is brought into close and sealing contact with the fold of the drain port portion.

Furthermore, the outer wall of the protrusion and the inner wall of the folded portion are provided in the same shape and facing each other. As a result, the protruding portion and the folded portion face each other and come into close contact with each other in a sealing manner, thereby closing the drain port.

A sealing member is installed on the closing part and moved together with the closing part, and the separately installed sealing member is brought into contact with the inner tank wall, and the contact portion is sealed using the pressing force during the contact process. This not only improves sealing performance, but also streamlines installation of the device and speeds up assembly and maintenance. In addition, by installing the sealing member in a relatively movable closure component, the sealing force exerted by the sealing member due to the clamping is increased, and the sealing effect is significantly improved.

In addition, in order to solve the above-mentioned problems and realize the above-mentioned first object of the present invention, another specific technical solution below is adopted.

In a sealed drainage device for a drum washing machine, the drum washing machine includes an inner tank in which wash water is independently stored when washing clothes, and a drain port is provided in the inner tank. The sealing surface of the closing part either seals and directly contacts the inner tank wall to close the drain, or separates to open the drain.

Furthermore, the closing component and/or the inner tank wall at the point of contact with the closing component is made of a material that can be elastically deformed. As a result, elastic deformation occurs when the closing component and the inner tank wall face each other and come into contact with each other, and the contact area is appropriately sealed.

Furthermore, the closing part may be in sealing contact with an inner tank wall around the outer periphery of the drain, and/or the closing part may be in sealing contact with an inner wall of the drain, so as to close the drain accordingly.

Further, the closing component is provided with a sealing protrusion having at least one circumference, and the sealing protrusion is in sealing contact with the inner wall surface of the outer periphery of the drain port, thereby appropriately closing the drain port. and/or the inner tank wall at the outer periphery of the drain port has at least one round sealing protrusion, and the sealing protrusion contacts the closing part in a sealing manner to appropriately close the drain port. and/or the inner wall of the drain has at least one circumferential sealing protrusion, the sealing protrusion being in sealing contact with the closing component to accordingly close the drain. Preferably, the closing parts and the sealing protrusions provided on the wall surface of the inner tank at the outer periphery of the drain port are arranged alternately.

Furthermore, the closure part has a sealing surface that seals against the drain opening and one another. The projection of the sealing surface on the inner tank wall along the tank diameter covers at least the drain opening. The sealing surface is provided in the same shape opposite to the inner tank wall on the outer periphery of the drain port, and is in close contact with the inner tank wall in an appropriate and sealing manner.

Furthermore, the inner tank wall around the outer periphery of the drain port is a flat portion parallel to the sealing surface. The flat portion at least covers a projection area on the inner tank wall on the sealing surface. And/or the sealing surface of the closure component is an arcuate surface of the same shape that faces the inner tank wall.

Further, the closing component is mounted on the inner tank wall by a mounting structure so as to be movable in the axial direction of the drain port. A spring member is sandwiched between the closing component and the mounting structure to push the sealing member and close the drain port. The closing component is connected to the weight directly or through a transmission structure, and when the rotational speed of the inner tank exceeds a predetermined rotational speed V0, the closing component moves toward the center of the tank due to the centrifugal force of the weight. , open the drain.

Furthermore, the sealing surface of the closing component is provided with a protrusion that protrudes toward the drain port. The drain port portion is provided with a fold that projects toward the side away from the blocking component. The protrusion and the fold are provided opposite each other, and the protrusion is brought into close and sealing contact with the fold of the drain port portion.

Furthermore, the outer wall of the protrusion and the inner wall of the folded portion are provided in the same shape and facing each other. As a result, the protruding portion and the folded portion face each other and come into close contact with each other in a sealing manner, thereby closing the drain port.

The present invention further discloses a drum washing machine. In a drum washing machine, the inner tub of the washing machine is a container in which water is stored during a washing program. The inner tank is provided with at least one drain port, and one of the above-mentioned sealed drainage devices is attached to each drain port portion. The closing component of the sealed drainage device is moved toward the center of the inner tank by the action of centrifugal force when the inner tank is rotated, and the sealing member is separated from the inner tank wall to open the drain port.

Furthermore, the side wall of the inner tank is provided with at least one lifting rib. The interior of the lifting rib is hollow and communicates with the interior of the inner tank. The side wall of the inner tank is provided with at least one drain port communicating with the hollow portion of the lifting rib, and the drain port portion is provided with a closing component located inside the lifting rib.

By bringing the closing component into direct sealing contact with the inner tank wall, the contact area is sealed using the pressing force generated by the contact between the two. This not only improves sealing performance, but also streamlines installation of the device and speeds up assembly and maintenance. Moreover, directly constructing and using the sealing member with a relatively movable closing part not only reduces the speed of the member but also streamlines the compactness of the device.

The washing machine described in the present invention has the following beneficial effects compared to prior art washing machines.

By providing it as described above, it is possible to achieve the purpose of hiddenly providing a drain port inside the lifting rib of the inner tank and discharging the water flow in the inner tank to the outside from the hidden drain port. Furthermore, by providing a sealed drainage device at the drain port, it becomes possible to appropriately control the blocking component by utilizing the centrifugal force generated when the inner tank rotates at high speed, and to open and close the drain port as appropriate. As a result, when the washing machine executes a dewatering program, the centrifugal force generated by the high-speed rotation of the inner tub acts on the blockage parts, causing the drain port to automatically open the inner tub and drain the water accordingly. The purpose is achieved.

FIG. 1 is a diagram showing the principle of a drum washing machine according to an embodiment of the present invention. FIG. 2 is a diagram showing the operating principle when the sealed drainage device according to the first and second embodiments of the present invention is attached to a drum washing machine. FIG. 3 is a partially enlarged view of FIG. 2 of the sealed drainage device according to the embodiment of the present invention. FIG. 4 is a partially enlarged view of the further embodiment of FIG. 2 of a drainage device according to an embodiment of the invention. FIG. 5 is an exploded view of a sealed drainage device in Examples 1 and 2 of the present invention. FIG. 6 is a diagram showing the operating principle when the sealed drainage device according to the third embodiment of the present invention is attached to a drum washing machine. FIG. 7 is a partially enlarged view of FIG. 6 of the sealed drainage device according to the embodiment of the present invention. FIG. 8 is a partially enlarged view of the further embodiment of FIG. 6 of a sealed drainage device according to an embodiment of the invention. FIG. 9 is an assembly diagram of a sealed drainage device and a lifting rib of a drum washing machine in Embodiment 4 of the present invention. FIG. 10 is a schematic diagram of an inner tub structure of a drum washing machine to which a sealed drainage device and a lifting rib of a washing machine are assembled according to a fourth embodiment of the present invention. FIG. 11 is a diagram showing the operating principle when the sealed drainage device according to the fifth embodiment of the present invention is attached to a drum washing machine. FIG. 12 is a diagram showing the operating principle of a further embodiment in which the sealed drainage device according to the fifth embodiment of the present invention is attached to a drum washing machine. FIG. 13 is a partially enlarged view of FIG. 11 of the sealed drainage device in Example 5 of the present invention. FIG. 14 is a diagram showing the operating principle when the sealed drainage device according to the sixth embodiment of the present invention is attached to a drum washing machine. FIG. 15 is a partially enlarged view of FIG. 14 of the sealed drainage device according to the embodiment of the present invention. FIG. 16 is a schematic diagram of the structure of a sealed drainage device in Example 7 of the present invention. FIG. 17 is a schematic diagram of a partial structure of an inner tank to which a sealed drainage device is installed in Example 7 of the present invention. FIG. 18 is a diagram showing the operating principle when a drum washing machine is equipped with a sealed drainage device according to a seventh embodiment of the present invention. FIG. 19 is a partially enlarged view of FIG. 18 of the sealed drainage device according to the embodiment of the present invention. FIG. 20 is a partial enlarged view of the further embodiment of FIG. 18 of a sealed drainage device according to an embodiment of the invention. FIG. 21 is a diagram showing the operating principle when the sealed drainage device according to the eighth embodiment of the present invention is attached to a drum washing machine. FIG. 22 is a partially enlarged view of FIG. 21 of the sealed drainage device according to the embodiment of the present invention. FIG. 23 is a partially enlarged view of the further embodiment of FIG. 21 of a sealed drainage device according to an embodiment of the invention. FIG. 24 is a diagram showing the operating principle when the sealed drainage device according to the ninth embodiment of the present invention is attached to a drum washing machine. FIG. 25 is a partially enlarged view of FIG. 24 of the sealed drainage device according to the embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The drum washing machine and its control method according to the present invention will be described in detail below with reference to the drawings.

As shown in FIGS. 1 to 25, this embodiment provides a front-opening drum washing machine having an inner tub without holes. This structure is simple, and since there is no need to fill washing water/rinsing water between the inner tub and the outer tub, the amount of washing water in the washing machine can be significantly reduced. Furthermore, the possibility of dirt adhering between the inner tank and the outer tank is also avoided. Thus, user health and user experience are greatly improved, and huge water resources are saved.

The drum washing machine of this embodiment has a housing 19. Housing 19 includes a top panel 2, a front panel, a rear panel, and a bottom plate. A bottom leg 9 for supporting the entire washing machine is attached and fixed to the bottom plate. An outer tank 18 is provided inside the housing 19, and an inner tank 17 is installed coaxially within the outer tank 18. The main purpose of the outer tank 18 is to collect the waste water from the inner tank 17 and the waste water associated with high-speed centrifugal dewatering of the inner tank 17. When the inner tub 17 rotates (preferably, lifting ribs 43 are installed), the clothes are washed by continuously moving up and down and hitting the clothes. The inner tank 17 has a structure without holes. Further, the outer tank 18 has a center mounting hole into which the bearing 12 is mounted and fixed. In addition, an inner tank shaft 13 firmly connected to the inner tank 17 is inserted through the bearing 12 and connected to a drive motor 16 . An open/closeable inner tank door 6 is attached to the front tank mouth of the inner tank 17, thereby realizing a sealed chamber structure of the inner tank 17.

A main body door 5 that can be opened/closed is attached to the housing 19 of this embodiment.

As shown in FIGS. 1 to 25, the drum washing machine of this embodiment includes an inner tank 17 in which wash water is independently stored when washing clothes. Since the inner tank 17 has a holeless inner tank design, the interior becomes a closed space with ventilation holes during cleaning. Therefore, washing water can be stored independently during washing and rinsing of the washing machine, and since there is no water between the inner tub and the outer tub, the purpose of saving water is achieved. Moreover, the situation where dirt is generated between the inner tank and the outer tank is avoided, and the tank wall is kept clean, thereby improving the user experience. A drain port 39 is provided in the inner tub 17 of the washing machine, through which water is drained during the draining and/or dewatering process. This embodiment discloses a sealed drainage device applied to the above drum washing machine. The sealed drainage device includes a centrifugal member that moves due to centrifugal force when the inner tank 17 rotates, and a closing component for closing the drain port. The centrifugal member is connected to a closure component, and the closure component opens the drain port with centrifugal movement of the centrifugal member.

The sealed drainage device provided in this embodiment uses the centrifugal force generated when the inner tank 17 rotates to centrifugally move the centrifugal member, and the centrifugal member moves the blocking part to open the drain port, thereby draining water. Realize. In principle, this method is easy to implement because drainage can be achieved by setting the rotational speed of the inner tub using the operating characteristics of a drum washing machine. In addition, the structure is simple because the centrifugal movement of the centrifugal member is used to open the blocked part and drain water. Therefore, the sealed drainage device of the present application realizes independent water storage in the non-porous inner tank by keeping the drain port closed during washing and rinsing for drum washing machines having a non-perforated inner tank, and allows drainage and/or dehydration. Sometimes, by controlling the rotational speed of the inner tub, drainage by centrifugal force is realized to realize the sealing and drainage of a drum washing machine with a non-perforated inner tub.

As an embodiment of this embodiment, both the centrifugal member and the closing component described in this embodiment are capable of reciprocating movement in the radial direction of the inner tank 17. The closure part moves with the centrifugal member in the same or opposite direction to the centrifugal movement of the centrifugal member.

Considering that it is necessary to install more control members in order for the closing part and the centrifugal member to move in the same direction, preferably, the centrifugal member is controlled by the action of centrifugal force when the inner tank rotates. The closing part moves along the radial direction of the inner tank away from the center axis of the inner tank, and the closing part moves along the radial direction of the inner tank toward the center axis of the inner tank, accompanied by the centrifugal member. do. As a result, the movements of the closing component and the centrifugal member along the radial direction of the inner tank overlap with each other, so that the total movement stroke of both along the radial direction of the inner tank is reduced, and the installation space becomes smaller.

Furthermore, the closure component in this embodiment includes a closure member and an elastic member 43. The elastic member 43 acts on the closing member to maintain the sealing state of the drain port 39 by the closing member. The centrifugal member is connected to a closing member, and as the centrifugal member moves centrifugally, the closing member moves to open the drain port.

The elastic member 43 of the present embodiment maintains the drainage port closed by the closing member by generating an elastic preload force on the closing member. This keeps the inner tank closed and stores cleaning water.

In order to achieve sealing between the blocking component and the drain port, the following method is adopted in this embodiment.

Method 1: The drain port 39 is closed by bringing the closing component into direct contact with the drain port 39 in a sealed manner. For example, the closing part and the drain port 39 may be directly electromagnetically sealed, rigidly sealed, or the like.

Method 2: The drain port 39 is closed by bringing the closing component into sealing contact with the drain port 39 via the sealing member 40. Sealing via the sealing member 40 reduces costs, is simple and effective.

Furthermore, the closure component has a sealing protrusion for contacting and sealing in the circumferential direction. The sealing convex portion closes the drain port by maintaining sealing contact with the inner tank wall or inner wall around the outer periphery of the drain port. The sealing convex portion in this embodiment may be directly installed on the closing component to realize direct sealing of the drain port 39 by the closing component.

and/or the inner wall and/or the inner tank wall on the outer periphery of the drain port 39 have a sealing protrusion for contacting and sealing in the circumferential direction, and the sealing rib maintains sealing contact with the closing part. This will block the drain.

And/or the sealing member 40 has a sealing protrusion 41 for sealing by contacting in the circumferential direction, and the sealing protrusion 41 sealingly contacts the blocking part and/or the drain port 39 to prevent drainage. Close the mouth.

The sealing convex portion of this embodiment is formed by partially protruding from the closing component, and/or the inner wall of the drain port 39, and/or the inner tank wall around the outer periphery of the drain port 39, and/or the sealing member 40. It may also be a sealing protruding rib. Alternatively, the sealing convex portion of this embodiment is formed by partially recessing the closing component, the inner wall of the drain port 39, the inner tank wall around the outer circumference of the drain port 39, and/or the sealing member 40. It may also be a protruding portion formed.

Further, the sealed drainage device of this embodiment includes a casing 44 having a guide path therein. The closing member includes a guide section 35 installed in the guide path so as to be able to reciprocate, a closing section 36 installed at one end of the guide section 35 to close the drain port, and a closing section 36 installed at the other end of the guide section. and a connection portion 34 that is connected to the centrifugal member. The elastic member 43 is mounted inside the casing 44, and has one end abutted against the casing 44 and the other end abutted against the closing member.

The elastic member in this embodiment is a compression spring, and the compression spring is covered by the guide portion 35. Preferably, the casing 44 further includes an accommodation groove for accommodating a compression spring. The accommodation groove is disposed around the outer periphery of the guide path, and one end of the compression spring rests in the accommodation groove, and the other end rests on the closed portion.

Specifically, the guide portion 35 of this embodiment is a guide column. The closing portion 36 is a closing plug formed to extend in the circumferential direction of one end of the guide column. Further, the connecting portion 34 is a connecting rotating shaft installed at the other end of the guide column.

The centrifugal member described in this example includes a weight member 38 and a connecting member 37. One end of the connecting member 37 is connected to the weight member 38, and the other end is connected to the closure component. The central portion of the connecting member 37 is provided with a rotation shaft hole 42 which is rotatably mounted on the rotation shaft.

Preferably, the weight member 36 and the connecting member 37 are integrally molded.

The other end of the connecting member 37 in this embodiment is provided with a connecting rotating shaft hole 46 into which the connecting rotating shaft of the closing member is assembled, and the connecting rotating shaft is rotatably installed in the connecting rotating shaft hole 46. Ru.

The present embodiment further provides a drum washing machine including the sealed drainage device. The drum washing machine has an inner tank 17 in which wash water is stored independently when washing clothes, a drain port 39 provided in the inner tank 17 and used for discharging the wash water, and a drain port 39 attached to the inner wall of the inner tank. , a sealed drainage device in which a centrifugal member moves centrifugally under the action of centrifugal force when the inner tank rotates, thereby causing the blocking part to open the drain port.

In the drum washing machine described in this embodiment, in order to enable drainage by centrifugal force, the overall weight M of the centrifugal member, the rotational speed V of the inner tub, the elastic preload force F0 of the elastic member, and the The total mass m of the closing member satisfies the following.

That is, when the rotation speed V of the inner tank reaches a predetermined value V0, the centrifugal member starts centrifugal movement due to the centrifugal force of the inner tank. The centrifugal force generated in the centrifugal member moves the closing member toward the center axis of the inner tank along the radial direction of the inner tank against the elastic preload force F0 and the centrifugal force of the closing member, thereby closing the drain port. to open.

Furthermore, a clothes lifting device is attached to the inner wall of the inner tank. The clothes lifting device has an internal space and a communication hole that communicates the internal space with the inside of the inner tank. The drainage port is opened in a tank wall of the inner tank located within the internal space, and the sealed drainage device is installed within the internal space.

In this embodiment, by installing the sealed drainage device in the internal space, concealed mounting of the sealed drainage device is realized. This prevents the sealed drainage device from interfering with the clothes in the inner tank. Furthermore, since an independent protective cover can be omitted, manufacturing costs are reduced and the assembly process is simplified.

The garment lifting device in this embodiment is a lifting rib 32. The lifting rib 32 is attached to the inner wall of the inner tank 17 by a fastening screw 45. The lifting rib is provided with a stud bolt 55 for assembling the fastening screw 45. Further, a through hole 56 for inserting the fastening screw 45 is formed in the tank wall of the inner tank.

Furthermore, the present embodiment provides a method for controlling the drum washing machine. The control method includes the following.

That is, the washing machine controls the rotational speed V of the inner tub so that V≧V0 during the draining and/or dewatering process. The centrifugal member moves under the action of centrifugal force when the inner tank rotates, thereby causing the blocking component to open the drain port.

Note that the V0 is a predetermined value.

In this way, the drum washing machine of this embodiment can realize drainage and dehydration by controlling the rotational speed of the inner tub. In the drainage stage, the inner tank is controlled to rotate at a rotational speed of at least V0 to realize drainage, and in the dewatering stage, the inner tank is controlled to increase the rotational speed to V0 or higher to perform drainage during dewatering.

As shown in FIGS. 1 to 5, in the sealed drainage device for a drum washing machine according to this embodiment, the drum washing machine includes an inner tank 17 in which washing water is independently stored when washing clothes. A drain port 39 is provided in the inner tank 17. The sealed drainage device also includes a closing component for sealingly contacting the drain port 39 to close the drain port 39.

The sealed drainage device of the present application allows a drum washing machine having a holeless inner tank to maintain the drain port 39 blocked during washing and rinsing by blocking the drain port 39 with a blocking component. Realize independent water storage.

Further, the drain port 39 is closed by directly bringing the closing component into direct contact with the drain port 39 in a sealed manner.

Alternatively, the blocking component includes a blocking section 36 and a sealing member 40 installed in the blocking section 36, and the drain port 39 is blocked by bringing the sealing member 40 of the blocking component into sealing contact with the drain port 39. do.

Furthermore, the closure component has a sealing protrusion 41 for contacting and sealing in the circumferential direction. The sealing convex portion 41 closes the drain port by maintaining sealing contact with the inner tank wall or inner wall on the outer periphery of the drain port 39 .

And/or the sealing member 40 has a sealing protrusion 41 for contacting and sealing in the circumferential direction. The sealing convex portion 41 closes the drain port 39 by sealingly contacting the inner tank wall or inner wall on the outer periphery of the drain port 39 .

In order to achieve good circumferential sealing of the sealing convex portion 41 and the inner tank wall around the outer periphery of the drain port 39, the inner tank 17 described in this embodiment has a flat portion 57 on the inner wall surface. The drain port 39 is opened in the flat portion 57. The sealing convex portion 41 closes the drain port by maintaining sealing contact with the flat portion 57 on the outer periphery of the drain port 39 in the circumferential direction.

As another embodiment of this embodiment, the drain port 39 described in this embodiment is opened in the arcuate wall of the inner tank. The sealing protrusion 41 closes the drain port by maintaining sealing contact with the inner surface of the arc-shaped wall on the outer periphery of the drain port 39 in the circumferential direction.

Furthermore, the sealing protrusion 41 described in this embodiment includes at least one round sealing rib installed on the closure part/sealing member. Each sealing rib maintains circumferential sealing contact with the inner surface of the arcuate wall.

Preferably, the sealing protrusion includes at least two circumferential sealing ribs installed on the closure part/sealing member.

The height of each sealing rib is equal, and the height of each sealing rib is equal to or greater than the distance between the innermost sealing rib and the inner surface of the arcuate wall facing the innermost sealing rib.

Alternatively, the height of each sealing rib is gradually increased in the direction of arrangement from the outer circumference to the inner circumference so as to maintain circumferential sealing contact with the inner surface of the arcuate wall opposite each sealing rib. There is.

In one embodiment of the present embodiment, the sealing rib includes a main part of the sealing rib, an end part of the sealing rib for maintaining a sealing contact with the peripheral wall of the outer periphery of the drain port, and a main part of the sealing rib and an end of the sealing rib. It has a sealing rib transition part that connects the parts in series.

Preferably, the sealing rib transition part is a rounded structure R between the sealing rib end and the sealing rib main part.

The seal member 40 described in this embodiment is a seal plunger made of an elastic material. The seal plunger has an open mounting space for arranging a closure component. The seal plunger also has a sealing end surface that engages and seals the flat portion of the inner tank on the outer periphery of the drain port.

Preferably, the sealing end face is provided with at least one round sealing rib.

Further, the sealed drainage device described in this embodiment includes a centrifugal member that moves due to centrifugal force when the inner tank rotates. The centrifugal member is connected to a closure component, and the closure component opens the drain port with centrifugal movement of the centrifugal member.

The closing component includes a guide section 35 installed in the guide path so as to be able to reciprocate, a closing section 36 installed at one end of the guide section 35 to close the drain port 39, and a closing section 36 installed at the other end of the guide section 35. It includes a connection 34 installed and connected to the centrifugal member. The sealing member 40 is installed in the closed part.

The present embodiment further provides a drum washing machine including the sealed drainage device. The drum washing machine has an inner tank 17 in which wash water is stored independently when washing clothes, a drain port 39 provided in the inner tank 17 and used for discharging the wash water, and a drain port 39 attached to the inner wall of the inner tank. , a sealed drainage device in which a closing component opens the drainage port when the rotational speed of the inner tank reaches a predetermined value V0.

Further, an extending wall is provided between the drain port 39 and the inner wall of the inner tank 17 so that the drain port projects inwardly or outwardly with respect to the tank wall of the inner tank. The closure component extends into the elongated wall and maintains circumferential sealing contact with the inner wall to close the drain port. This further strengthens the sealing effect between the blocking component and the drain port 39.

Alternatively, the drain port 39 and the inner wall of the inner tank 17 are installed flush with each other, and the blocking component is in sealing contact with the inner tank wall around the outer periphery of the drain port in the circumferential direction, or is sealed with the inner peripheral wall of the drain port. If it comes into contact with the water, it will block the drain.

As shown in FIGS. 1 and 6 to 10, in the sealed drainage device for a drum washing machine according to this embodiment, the drum washing machine includes an inner tank 17 in which wash water is independently stored when washing clothes. A drain port 39 is provided in the inner tank 17. The sealed drainage device also includes a closing component for sealingly contacting the drain port to close the drain port.

A first sealing part 47 is installed in the closing part, and the first sealing part 47 has unequal cross-sectional areas along the central axis, and the outer circumferential wall of at least one cross-section contacts the drain port in a circumferential direction in a sealing manner. This will block the drain.

The closing part of the sealed drainage device in this embodiment has a first sealing part whose cross section changes. By doing so, the first sealing component can better seal the drain port in the circumferential direction, and the sealing effect of the drain port is guaranteed.

In one embodiment of the present example, the first sealing part includes a proximal end portion located close to the drain port, and a distal end portion located away from the drain port. The first sealing part 47 has a cross-sectional area that gradually increases along the central axis from the proximal end to the distal end.

Preferably, the first sealing part 47 is a conical or truncated conical sealing plug whose cross-sectional area gradually increases in each cross section from the proximal end to the distal end.

As an embodiment of this embodiment, the inner tank 17 has a flat portion on the inner wall surface, and the drain port 39 is opened in the flat portion. The outer circumferential wall of at least one cross section of the first sealing component 47 sealsly contacts the drain port 39 in the circumferential direction to close the drain port.

Alternatively, the drain port may be formed in an arcuate wall of the inner tank. The inner tank wall on the outer periphery of at least one cross section of the first sealing component 47 seals the drain port in the circumferential direction, thereby closing the drain port.

Furthermore, the closing component described in this embodiment is provided with a second sealing component located on the outer periphery of the first sealing component 47, and the second sealing component and the inner tank wall on the outer periphery of the drain port 39 are connected to each other. contact in a sealing manner in the direction. In this embodiment, the first sealing component and the second sealing component realize multiple sealing between the blocking component and the drain port 39. This ensures the sealing effect of the drain port 39 and prevents water leakage.

Specifically, the second sealing component of this embodiment realizes the first sealing around the outer periphery of the drain port. A second seal is also ensured by the sealing contact between the first sealing part and the drain.

In one embodiment of this embodiment, the second sealing part includes a sealing protrusion 41 installed on the outer periphery of the first sealing part 47 and used for contact and sealing. The sealing convex portion 41 closes the drain port by maintaining sealing contact with the inner tank wall around the outer periphery of the drain port 39.

Furthermore, the first sealing part 47 and the second sealing part are each made of an elastic material and are respectively disposed on the closure part.

Alternatively, the first sealing part and the second sealing part are each made of an elastic material, and after the first sealing part and the second sealing part are integrally connected, the first sealing part and the second sealing part are disposed in the closing part.

Alternatively, the first sealing component and the second sealing component are seal plungers integrally formed of an elastic material, and the seal plunger is disposed on the closing component.

The sealed drainage device of this embodiment further includes a centrifugal member that moves under the action of centrifugal force when the inner tank rotates. The centrifugal member is connected to a closure component, and the closure component opens the drain port with centrifugal movement of the centrifugal member.

The closing component includes a guide section installed in the guide path so as to be able to reciprocate, a closing section installed at one end of the guide section to close the drain port, and a centrifugal member installed at the other end of the guide section. Contains connections connected to. The first sealing part/second sealing part is installed in the closure part.

This embodiment further discloses a drum washing machine including the sealed drainage device. The drum washing machine has an inner tank that stores washing water independently when washing clothes, a drain port that is installed in the inner tank and is used to discharge the washing water, and a drain that is attached to the inner wall of the inner tank. a sealed drainage device in which a closing component opens the drainage port when the rotational speed of the drainage port reaches a predetermined value V0.

Furthermore, the drain port 39 has an extending wall 48 extending between it and the inner wall of the inner tank 17 so that the drain port projects inwardly or outwardly from the tank wall of the inner tank. The first sealing element 47 extends into the elongated wall 48 to close the drain opening by maintaining the outer circumferential wall of at least one cross section in sealing circumferential contact with the inner circumferential wall of the elongated wall 48. .

In order to further improve the sealing effect of the first sealing part 47, the first sealing part 47 and the inner circumferential wall of the drain outlet extension wall 48 are in surface or line contact to seal the drain outlet.

Preferably, the inner circumferential wall of the elongated wall matches the shape of the outer circumferential wall of the first sealing part.

More preferably, the first sealing component is a cone-shaped or truncated cone-shaped sealing plug whose cross-sectional area gradually increases in each cross section from the proximal end to the distal end with respect to the drain port. Further, the extending wall of the drain port is a truncated conical peripheral wall whose internal cross-sectional area gradually decreases in a direction away from the central axis of the inner tank from the inner tank wall.

As shown in FIGS. 1 and 11 to 13, the drum washing machine of this embodiment has an inner tank 17 that independently stores wash water when washing clothes, and an inner tank 17 that is installed in the inner tank 17 to discharge the wash water. An inner tank drain port 39 used, a mounting member 50 attached to the drain port 39 portion on the inner wall of the inner tank 17, a mounting member drain port 51 opened in the mounting member and communicating with the inner tank drain port 39, A sealed drainage device having a closing part for closing the mounting member drainage port 51 is included.

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

Preferably, the inner tank drain port is provided in an inner wall of the inner tank. The mounting member includes a connecting portion, and the connecting portion and the inner tank wall around the outer circumference of the inner tank drain port are connected in a sealed manner.

The mounting member 50 described in this embodiment further includes an end cover portion. The two opposing side walls of the flat portion maintain a sealing connection with the inner wall of the inner tank. Moreover, end cover parts are respectively connected to two other opposing side walls of the flat part, and the end cover parts maintain a sealed connection with the inner wall of the inner tank.

Preferably, the flat part and the end cover part are integrally molded.

In this embodiment, a mounting member 50 is attached to the inner wall of the inner tank, and the mounting member 50 has a mounting member drain port 51 that communicates with the inner tank drain port 39. Thereby, the inner tank drain port 39 can be sealed by closing the mounting member drain port 51 with the sealed drain device. Therefore, the mounting member 50 realizes a sealed arrangement of the sealed drainage device without changing the arcuate wall structure of the conventional inner tank, so that the mounting structure is simple. Moreover, since the mounting member has a flat portion that sealingly engages with the closure component, the sealing effect is further improved.

Further, the inner tank drain port is provided in the arcuate wall of the inner tank. The mounting member includes a connecting portion, and the connecting portion and the inner tank wall around the outer circumference of the inner tank drain port are connected in a sealed manner.

Specifically, the flat part is a flat and straight plate, and the end cover part further includes an end cover plate. The two opposing side walls of the flat plate maintain a sealing connection with the arcuate inner wall of the inner tank. Further, end cover plates are connected to the other two opposing side walls of the flat plate, respectively, and the end cover plates maintain a sealed connection with the arcuate inner wall of the inner tank.

Preferably, the flat plate and the end cover plate are integrally molded.

As shown in FIGS. 23 and 24, as an embodiment of this embodiment, a seal ring 52 is installed between the mounting member 50 and the inner wall of the inner tank to achieve a sealed connection, or The mounting member 50 and the inner wall of the inner tank are welded.

In this embodiment, the cross-sectional area of the opening of the inner tank drain port 39 is greater than or equal to the cross-sectional area of the mounting member drain port 51. By doing so, when draining water, the water discharged from the mounting member drain port 51 can be quickly discharged from the inner tank drain port 39, thereby ensuring smooth drainage.

Preferably, both the inner tank drain port and the mounting member drain port are circular holes. The hole diameter of the inner tank drain port is greater than or equal to the hole diameter of the mounting member drain port.

More preferably, the center axis of the inner tank drain port and the center axis of the mounting member drain port are colinear. By doing this, the water discharged from the mounting member drain port 51 can be drained straight to the inner tank drain port 39, and the outflow path from the mounting member drain port 51 to the inner tank drain port 39 is bent to prevent water from being drained. Situations that would impede the effectiveness are avoided.

In order to strengthen the sealing effect between the sealed drainage device and the mounting member drain port 51, a sealing engagement portion 54 is provided on the outer periphery of the mounting member drain port 51 in the flat portion to sealingly engage with the blocking component. ing.

Preferably, the sealing engagement part 54 is a sealing rib of at least one circumference installed on the outer periphery of the drain, and the sealing rib contacts the sealing part of the closure part in a sealing manner.

Further, a mounting member extending wall 53 is provided between the mounting member drain port 51 and the flat portion so that the mounting member drain port 51 projects inwardly or outwardly from the flat portion. Further, a first sealing component 47 is installed in the closing component. The first sealing element 47 extends into the mounting member extension wall 53 such that the outer peripheral wall of at least one cross section maintains sealing contact with the inner peripheral wall of the mounting member extension wall 53 .

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

Preferably, the inner peripheral wall of the mounting member extension wall 53 matches the shape of the outer peripheral wall of the first sealing part 47.

More preferably, the first sealing component 47 is a conical or truncated conical sealing plug in which the cross-sectional area of each cross section from the proximal end to the distal end gradually increases with respect to the mounting member drainage port. be. The mounting member extension wall 53 is a truncated conical peripheral wall whose internal cross-sectional area gradually decreases from the flat portion toward the direction away from the central axis of the inner tank.

Furthermore, a clothes lifting device is installed on the inner wall of the inner tank. The clothes lifting device has an internal space and a communication hole 33 that communicates the internal space with the inside of the inner tank. The drain port is opened in the tank wall of the inner tank located in the inner space, and the mounting member 50 and the sealed drainage device are both installed in the inner space.

Specifically, the lifting device described in this embodiment is a lifting rib 32. The lifting rib 32 has a lifting rib base 58 that is attached to the inner wall of the inner tank, and a lifting rib convex part 49 that projects toward the inside of the inner tank. The communication hole 33 is installed in the lifting rib convex portion 49. Further, the mounting member 50 is connected to the lifting rib base 58 in a circumferential direction in a sealed manner.

The sealed drainage device of this embodiment further includes a centrifugal member that moves under the action of centrifugal force when the inner tank rotates. The centrifugal member is connected to a closure component, and as the centrifugal member centrifugally moves, the closure component opens the mounting member drain port.

As shown in FIGS. 1, 14 and 15, the drum washing machine of this embodiment has an inner tank 17 in which wash water is stored independently when washing clothes, and a through hole provided in the inner tank 17. , includes a mounting member 50 that is installed in a sealed manner in a disposed through hole, a mounting member drain port 51 that is opened in the mounting member, and a sealed drainage device having a closing part for closing the mounting member drain port. .

In this embodiment, a mounting member 50 is attached to a through-hole provided in the inner tank, and the mounting member 50 has a mounting member drain port 51. Thereby, by closing the mounting member drain port 51 with the sealed drain device, it is possible to seal the inner tank drain port. Therefore, the mounting member 50 realizes a sealed arrangement of the sealed drainage device without changing the arcuate wall structure of the conventional inner tank, so that the mounting structure is simple. Moreover, since the mounting member has a flat portion that sealingly engages with the closure component, the sealing effect is further improved.

Furthermore, the arrangement through-hole is opened in the tank wall of the inner tank. The mounting member 50 includes a connecting portion, and the connecting portion and the inner circumferential wall of the disposed through hole are connected in a sealed manner.

The mounting member described in this embodiment includes a flat portion, and the mounting member drainage port is provided in the flat portion.

In order to realize the sealing of the mounting member drain port 51 by the blocking component, as an embodiment of the present example, the outer wall located on the outer periphery of the mounting member drain port 51 in the flat portion is provided with a material that engages in a sealing manner with the blocking component. A matching sealing engagement portion 54 is provided.

Preferably, the sealing engagement part 54 is a sealing rib of at least one circumference installed on the outer periphery of the mounting member drain, and the sealing rib contacts the closure part in a sealing manner.

In a further embodiment of this example, the closure part has at least one round of sealing ribs, which sealing rib maintains a sealing contact with the flat part of the outer periphery of the mounting member drain 51.

And/or a sealing member is installed on the closure component. The sealing member has at least one round sealing rib that maintains sealing contact with the outer wall surface of the flat portion at the outer periphery of the mounting member drain.

As a further embodiment of this example, at least one circumference of the first sealing rib is provided on the outer wall of the flat portion located at the outer periphery of the mounting member drain port. Further, a sealing member is installed on the closing part, and the sealing member has a second sealing rib having at least one circumference. The first sealing ribs and the second sealing ribs are alternately installed. The first sealing rib maintains a sealing contact with the flat end surface of the sealing member, and the second sealing rib maintains a sealing contact with a flat flat portion of the outer periphery of the mounting member drain.

In order to further strengthen the sealing effect of the mounting member drain port by the closing component, a space between the mounting member drain port 51 and the flat portion is set so that the mounting member drain port 51 projects inwardly or outwardly with respect to the flat portion. is provided with a mounting member extension wall 53. Further, a first sealing component 47 is installed in the closing component. The first sealing element 47 extends into the mounting member extension wall 53 such that the outer circumferential wall of at least one cross section maintains a circumferential sealing contact with the inner circumferential wall of the mounting member extension wall.

Further, the first sealing part 47 and the inner circumferential wall of the mounting member extension wall 53 are in surface contact or line contact to seal the mounting member drainage port.

Preferably, the inner peripheral wall of the mounting member extension wall 53 matches the shape of the outer peripheral wall of the first sealing part 47.

More preferably, the first sealing part 47 is a conical sealing plug with a cross-sectional area that gradually increases in each cross-section from the proximal end to the distal end with respect to the mounting member drainage port. The mounting member extension wall 53 is a truncated conical peripheral wall whose internal cross-sectional area gradually decreases from the flat portion toward the direction away from the central axis of the inner tank.

A clothing lifting device is installed on the inner wall of the inner tank 17 in this embodiment. The clothes lifting device has an internal space and a communication hole that communicates the internal space with the inside of the inner tank. The installation through-hole is opened in a tank wall of the inner tank located in the inner space, and the sealed drainage device is installed in the inner space.

The drainage sealing device of this embodiment further includes a centrifugal member that moves under the action of centrifugal force when the inner tank rotates. The centrifugal member is connected to a closure component, and as the centrifugal member centrifugally moves, the closure component opens the mounting member drain port.

Further, the centrifugal member includes a weight member and a connecting member. One end of the connecting member is connected to the weight member, and the other end is connected to the closure component. The central portion of the connecting member is provided with a rotation shaft hole rotatably mounted on the rotation shaft.

Preferably, the weight member and the connecting member are integrally molded.

This example differs from Example 2 described above in the following points. As shown in FIGS. 16 to 20, the wall of the inner tank 17 at the outer periphery of the drain port 39 is attached to the wall of the inner tank 17 at the outer periphery of the drain port 39 in order to achieve a sealed contact between the blocking part of the sealed drainage device and the inner tank wall at the outer periphery of the drain port 39. A sealing protrusion 53 having at least one circumference is provided. The sealing convex portion 53 closes the drain port by sealingly contacting the closing component or a sealing member attached to the closing component.

In this embodiment, the inner tub 17 of the drum washing machine will be further explained. The inner tank 17 has a storage space surrounded by a solid wall and at least one drain port 39 so that washing water can be stored independently. The drain port 39 is installed on the main wall of the inner tank and is used to drain water from the inner tank. Further, a sealing portion is installed on the solid wall in the outer peripheral area of the drain port.

In this embodiment, the sealing portion is a sealing device that engages with a closing component that closes the drain port 39. Both the sealing part and the closing part are components of the sealed drainage device in this embodiment. The sealed portion of this embodiment includes (but is not limited to) the following structure. That is, the solid wall is provided with a sealing protrusion 53 whose height changes along the radial direction of the inner tank. The sealing portion is a sealing convex portion 53 that protrudes toward the center of the inner tank 17 from a flat portion 57 around the drain port 39 in the solid wall. The closure device has a sealing surface opposite the sealing protrusion 53 . The sealing surface is a flat surface or a smooth curved surface.

The sealing convex portion 53 of this embodiment may be formed by a protruding end of a sealing rib that protrudes from the solid wall toward the center of the inner tank, or may be a recess that is recessed from the solid wall toward the outside of the inner tank. It may be formed by the outer periphery of the upper end opening of the groove.

In this embodiment, the sealing convex portion 53 extends intermittently or continuously at least once around the outer periphery of the drain port. Preferably, at least one sealing protrusion 53 is provided in each direction in the radial direction of the drain port 39 in order to ensure sealing performance in each direction of the drain port.

In this embodiment, the center connection line of each sealing convex portion 53 and the center of the drain port 39 are provided concentrically. As a result, each of the sealing convex portions 53 is provided symmetrically with respect to the center of the drain port 39, thereby ensuring pressure balance around the entire circumference of the drain port, further improving sealing performance.

In this embodiment, the end face of the sealing convex portion 53 is provided with an arc transition curved surface. In order to guarantee the sealing performance between the sealing protrusion 53 and the sealing member, the arc transition curved surface of the end face portion of the sealing protrusion 53 may be installed as follows. That is, at least one location on both sides of the sealing protrusion 53 has an arcuate chamfered surface, or the end face of the sealing protrusion 53 is directly formed from a single arcuate curved surface.

Preferably, arc-shaped chamfers R are provided at both ends of the end face of the sealing protrusion 53 that contacts the closing component, and the end face of the sealing protrusion 53 is preferably provided with a chamfered portion R in the shape of an arc so that the center of the end of the sealing protrusion 53 is a flat surface. Arc transition curved surfaces are provided at locations on the inner circumferential side and the outer circumferential side, respectively. This ensures the width of the contact surface between the closing component and the sealing convex portion 53, thereby improving the sealing performance by pressing.

In order to achieve good circumferential sealing between the sealing convex portion 53 and the sealing member 40, the inner tank 17 described in this embodiment has a flat portion 57 on the inner wall surface, and the drain port 39 is opened on the flat part 57. The sealing convex portion 53 is located on the flat portion 57. Furthermore, the flat portion 57 covers at least a projected area on the inner tank wall of the sealing member 40 along the inner tank diameter. Thereby, the sealing member 40 and the flat portion 57 on the outer periphery of the drain port 39 maintain a sealed contact in the circumferential direction, thereby improving the sealing performance when closing the drain port.

The drain port 39 described in this embodiment is opened in the arcuate wall of the inner tank. The sealing protrusion 41 closes the drain port by maintaining sealing contact with the inner surface of the arc-shaped wall on the outer periphery of the drain port 39 in the circumferential direction.

In this embodiment, the sealing protrusion 41 includes at least two circumferential sealing ribs distributed in the radial direction of the closure part/sealing member 40. Both circumferential sealing ribs maintain circumferential sealing contact with the inner surface of the arcuate wall. The height of each sealing rib is equal, and the height of each sealing rib is equal to or greater than the distance between the innermost sealing rib and the inner surface of the arcuate wall facing the innermost sealing rib. Alternatively, the height of each sealing rib is gradually increased in the direction of arrangement from the outer circumference to the inner circumference so as to maintain circumferential sealing contact with the inner surface of the arcuate wall opposite each sealing rib. There is.

In this embodiment, the closure component includes a sealing member 40 that is in sealing contact with the solid wall of the inner tank 17 to seal the drain port.

In this embodiment, the sealing member 40 is elastically deformed by pressing against the sealing portion provided on the solid wall of the inner tank 17, and seals the contact points using the elastic deformation. Preferably, the sealing member 40 is made of an elastic material. As a result, the sealing members 40 themselves are elastically deformed by pressing against each other, and the contact portions are sealed.

In this embodiment, the wall of the inner tank 17 is fitted with a lifting rib 32 that engages the drain port 39 accordingly. The interior of the lifting rib 32 is hollow and communicates with the interior of the inner tank 17 through an opening. Further, a drain port 39 installed in the wall of the inner tank 17 communicates with the hollow portion of the lifting rib 32. Further, the closing component installed at the drain port 39 portion is located inside the lifting rib 32.

This embodiment is based on the sixth embodiment, and further has the following technical features. That is, in order to realize a sealed contact between the blocking component of the sealed drainage device and the inner tank wall of the drain port 39 portion, the inner tank wall of the drain port 39 portion is bent toward the outside of the inner tank 17. The flap 48 and/or the inner wall of the drain 39 is provided with a blocking rib extending towards the outside of the inner tank 17 . The folding and/or blocking rib has a cylindrical or conical shape. Thereby, the closing component itself and/or the sealing member 40 attached to the closing component come into sealing contact with the folds 48 and/or the blocking ribs, thereby realizing the process of closing the drain port.

As shown in FIGS. 21 to 23, in this embodiment, a sealed drainage device for a drum washing machine will be described. The drum washing machine includes an inner tank 17 in which wash water is independently stored when washing clothes. A drain port 39 is provided in the inner tank 17. The sealed drainage device also includes a closing component that sealsly contacts the drain port 39 and closes the drain port 39. The closing part can accordingly close the drain 39 by itself or by means of a sealing member 40 attached thereto. A fold 48 that bends toward the outside of the inner tank 17 is provided on the inner tank wall at the drain port 39 portion. The sealing contact of the closure component or sealing member 40 with the flap 48 closes the drain.

The sealed drainage device of the present application allows a drum washing machine having a holeless inner tank to maintain the drain port 39 blocked during washing and rinsing by blocking the drain port 39 with a blocking component. Realize independent water storage.

In this embodiment, the closure component includes a sealing member 40 that seals the drain port 39 in sealing contact with the inner tank wall. Preferably, the sealing member 40 is elastically deformed by pressing against the inner tank wall and/or the fold 39, and the elastic deformation is used to seal these contact points.

In this embodiment, the sealing member 40 further includes a protrusion 47 provided on the sealing member and protruding toward the drain port side. At least a portion of the protrusion 47 protrudes from the drain port 39 in the radial direction. As a result, the protruding portion 47 faces the folded portion 48 of the drain port 39 and comes into close contact with the folded portion 48 in a sealed manner. Preferably, the protrusion 47 has a conical shape, the diameter of which decreases toward the side away from the closure component, and which is coaxial with the drain port 39. In addition, the diameter of the smallest end of the conical protrusion 47 is smaller than the drain port 39, and the diameter of the largest end is larger than the drain port 39. As a result, the protrusion 47 can extend into the fold 48 of the drain port 39, and the protrusion 47 and the fold 48 are directly pressed and deformed, thereby sealing the contact area. Further, in order to ensure a sealed contact between the two, the diameter of the large diameter end of the protrusion 47 needs to be larger than the diameter of the large diameter end of the conical fold 48.

In this embodiment, the inner tub structure of a drum washing machine will be further described. The inner tank 17 has a storage space surrounded by a solid wall and at least one drain port 39 so that washing water can be stored independently. The drain port is installed in the main wall of the inner tank and is used to drain water from the inner tank. A first sealing portion is provided in the solid wall in the outer peripheral area of the drain port 39, and a second sealing portion is provided in the drain port 39 portion.

The first sealing portion in this embodiment is the sealing convex portion 53 installed on the solid wall of the inner tank 17 described in the third embodiment. Further, the second sealing portion is a cylindrical or conical surface fold 48 and/or a blocking rib installed at the drain port 39 portion of the inner tank 17 described in this embodiment and extending toward the outside of the tank.

Needless to say, in this embodiment, one of the first sealing part and the second sealing part may be selectively installed on the premise that the sealing of the inner tank is guaranteed.

This embodiment is based on the above embodiment and further has the following technical features. That is, as shown in FIGS. 1 to 23, in the sealed drainage device of a drum washing machine, washing water is stored independently when washing clothes, and a drain port 39 is opened. It includes a closing part for closing the tank 17 and the drain port 39 of the inner tank. The closure part is provided with a sealing member 40. The sealing member 40 sealingly contacts the wall of the inner tank 17 to close the drain port 39, or separates to open the drain port 39.

A sealing member is installed on the closing part and moved together with the closing part, and the separately installed sealing member is brought into contact with the inner tank wall, and the contact portion is sealed using the pressing force during the contact process. This not only improves sealing performance, but also streamlines installation of the device and speeds up assembly and maintenance. In addition, by installing the sealing member in a relatively movable closure component, the sealing force exerted by the sealing member due to the clamping is increased, and the sealing effect is significantly improved.

In this embodiment, the sealing member 40 is elastically deformed by pressing against the wall of the inner tank 17, and seals these contact points using the elastic deformation. In order to achieve the effect of sealing the sealing member and the inner tank using elastic deformation, the sealing member 40 itself may be made of an elastic material. Needless to say, the wall portion of the inner tank 17 that comes into contact with the sealing member 40 is made of an elastic material, and the elastic deformation of the sealing member 40 and/or the wall of the inner tank 17 is utilized to achieve a sealed contact. may be realized.

This embodiment is based on the above embodiment, and further has the following different technical features. That is, as shown in FIGS. 24 and 25, in a sealed drainage device for a drum washing machine, the drum washing machine includes an inner tank 17 in which washing water is independently stored when washing clothes. A drain port 39 is provided in the inner tank 17. The sealing surface of the closing part either seals and directly contacts the wall of the inner tank 17 to close the drain port 39, or separates to open the drain port 39.

By bringing the closing component into direct sealing contact with the inner tank wall, the contact area is sealed using the pressing force generated by the contact between the two. This not only improves sealing performance, but also streamlines installation of the device and speeds up assembly and maintenance. Moreover, directly constructing and using the sealing member with a relatively movable closing part not only reduces the speed of the member but also streamlines the compactness of the device.

In this embodiment, the closing part and/or the wall of the inner tank 17 at the contact point with the closing part is made of a material that can be elastically deformed. As a result, elastic deformation occurs when the closing component and the wall of the inner tank 17 come into contact, and the contact area is appropriately sealed.

In this embodiment, both the closing part and the wall of the inner tank 17 are made of inelastic materials, and other materials such as metal may also be used. In this case, the force exerted by both when pressing is used as is to bring the closing component and the wall of the inner tank 17 around the outer periphery of the drain port 39 into sealing contact. and/or sealing contact between the closing component and the inner wall of the drain, thereby closing the drain accordingly.

In this embodiment, in order to improve sealing performance, the closure component may be provided with at least one round sealing protrusion. In this case, the sealing protrusion comes into sealing contact with the inner wall surface of the outer periphery of the drain port, thereby appropriately closing the drain port.

and/or the wall of the inner tank 17 on the outer periphery of the drain port 39 has at least one round sealing protrusion 43, and the sealing protrusion contacts the closing part in a sealing manner to properly close the drain port. do.

and/or the inner wall of the drain port 39 has at least one circumferential sealing protrusion, which sealingly contacts the closing part to close the drain port accordingly.

Preferably, in this embodiment, a sealing convex portion that protrudes to face each other is provided on either one of the blocking component and the wall surface of the inner tank 17 on the outer periphery of the drain port 39, and a corresponding surface of the other member is provided. Let be a plane or a smooth curved surface. As a result, when the closing part and the inner tank wall come into sealing contact, the sealing protrusion and the corresponding surface restrict the position and press each other, realizing pressure due to line contact between the two and improving sealing performance. improves.

In this embodiment, the closure component has a sealing surface that seals against the drain 39 and one another. The projection of the sealing surface on the wall of the inner tank 17 along the tank diameter covers at least the drain port 39 . Since the sealing surface is provided in the same shape as facing the wall of the inner tank 17 on the outer periphery of the drain port 39, the sealing surface is appropriately closely and sealingly contacted. In this embodiment, the wall of the inner tank 17 at the outer periphery of the drain port 39 is a flat portion 57 parallel to the sealing surface. The plane portion 57 covers at least the projection area on the wall of the inner tank 17 on the sealing surface. And/or the sealing surface of the closure component is an arcuate surface of the same shape that faces the wall of the inner tank 17.

In this embodiment, the closure component is movably mounted on the wall of the inner tank 17 by a mounting structure. The closing component is pressed by the elastic force of the spring member to appropriately close and close the drain port 39. The closing component 36 is connected to the centrifugal member, and as the centrifugal member 38 centrifugally moves, the closing component opens the drain port.

In this embodiment, a protrusion 48 protruding toward the drain port 39 is provided on the sealing surface of the closing component. Further, the drain port 39 portion is provided with a conical or truncated conical fold 47 that protrudes away from the closing component. The protrusion 48 and the fold 47 are provided to face each other, and the protrusion 48 is brought into close contact with the fold of the drain port 39 in an appropriately sealed manner. In this embodiment, the outer wall of the protrusion 48 and the inner wall of the fold 47 are provided in the same shape and facing each other. As a result, the protruding portion 48 and the folded portion 47 face each other and come into close contact with each other in a sealed manner, thereby closing the drain port 39.

The above are only preferred embodiments of the invention and are not intended to limit the invention in any way. Although the present invention has been disclosed above in terms of preferred embodiments, it is not intended to limit the invention. Within the scope of the technical solution of the present invention, slight modifications or supplements that can be implemented by a person skilled in the art using the technical contents presented above are considered equivalent embodiments that are equally modified, and any such modifications or supplements are considered to be equivalent embodiments of the present invention. This does not deviate from the content of the technical plan. In addition, any simple modifications, equivalent variations, and supplements to the above embodiments based on the technical essence of the present invention all fall within the scope of the present invention.

Claims (16)

A sealed drainage device for a drum washing machine, the drum washing machine comprising:
An inner tank in which washing water is stored independently when washing clothes, and an inner tank with a drainage port;
including a blocking part for blocking the drain port of the inner tank,
The closing part is provided with a sealing member, and the sealing member sealingly contacts the inner tank wall to close the drain or separates to open the drain ;
A sealing protrusion of at least two circumferences is provided on the wall of the inner tank at the outer periphery of the drain port, and is formed to protrude from a flat part around the drain port toward the center of the inner tank, and The end face of the sealing protrusion is provided with an arcuate transition curved surface, and at least one location on both sides of the sealing protrusion has an arcuate chamfered surface, or the end face of the sealing protrusion is directly formed from one arcuate curved surface. and the sealing member presses against the sealing protrusion to make a sealing contact so as to properly close the drain port,
The inner tank wall of the drain port portion is provided with a fold that bends toward the outside of the inner tank, and the fold is in a cylindrical or conical shape,
The sealing member further includes a protrusion provided on the sealing member and protruding toward the drain port, and the protrusion has a diameter that decreases toward a side away from the closure component and is connected to the drain port. It has a conical shape provided coaxially, the diameter of the smallest end of the conical protrusion is smaller than the drain port, and the diameter of the largest end is larger than the drain port,
The protruding portion extends into the folded portion of the drain port portion as appropriate, and the protruding portion and the folded portion directly press and deform, thereby sealing the contact portion. The drum washing machine according to claim 1, wherein the sealing member is elastically deformed by pressing against the inner tub wall, and the elastic deformation is used to seal the contact area. Drainage equipment. The sealing member is in sealing contact with an inner tank wall around the outer periphery of the drain, and/or the sealing member is in sealing contact with an inner wall of the drain, so as to close the drain accordingly. The sealed drainage device for a drum washing machine according to claim 2, characterized in that the device is in contact with the drainage device. The sealing member has a drain port and a sealing surface that seals with each other, the projection of the sealing surface on the inner tank wall covers at least the drain port, and the sealing surface has a sealing surface that seals with the inner tank wall at the outer periphery of the drain port. The sealed drainage device for a drum washing machine according to any one of claims 1 to 3 , characterized in that the drainage device faces and is in close contact with the drum in a sealed manner. The inner tank wall on the outer periphery of the drain port is a flat part parallel to the sealing surface, and the flat part or the sealing surface is provided with at least one sealing protrusion that protrudes and extends in opposition to each other,
The sealed drainage device for a drum washing machine according to claim 4 , wherein the sealing surface of the sealing member is an arcuate surface having the same shape and facing the inner tub wall. a centrifugal member that moves by the action of centrifugal force when the inner tank rotates;
a sealing member installed in the blocking component and used to block the drain;
The drum according to any one of claims 1 to 5 , wherein the centrifugal member is connected to the closing part, and the sealing member opens the drain port with centrifugal movement of the centrifugal member. Sealed drainage system for washing machines. 7. The sealed drainage device for a drum washing machine according to claim 6 , wherein the protrusion and the drain port are opposed to each other and are in close contact with each other in a sealed manner to close the drain port. A sealed drainage device for a drum washing machine, wherein the drum washing machine includes an inner tank in which wash water is independently stored when washing clothes, and a drain port is provided in the inner tank,
The sealing surface of the closing component directly contacts the inner tank wall in a sealing manner to close the drain port, or separates to open the drain port ,
A sealing protrusion of at least two circumferences is provided on the wall of the inner tank at the outer periphery of the drain port, and is formed to protrude from a flat part around the drain port toward the center of the inner tank, and The end face of the sealing protrusion is provided with an arcuate transition curved surface, and at least one location on both sides of the sealing protrusion has an arcuate chamfered surface, or the end face of the sealing protrusion is directly formed from one arcuate curved surface. and the closing part presses against the sealing protrusion to make a sealing contact so as to properly close the drain port,
The sealing surface of the closing component is provided with a protrusion that projects toward the drain port, and the drain port portion has a conical or truncated conical fold that projects away from the blocking component. The outer wall of the protruding portion and the inner wall of the folded portion are provided in the same shape, so that the protruding portion and the folded portion face each other and come into close contact with each other in a sealing manner, thereby creating a seal for closing the drain port. Drainage device. The closing component is in sealing contact with an inner tank wall around the outer periphery of the drain, and/or the closing component is in sealing contact with an inner wall of the drain, so as to close the drain accordingly. The sealed drainage device for a drum washing machine according to claim 8 , characterized in that the device is in contact with the drainage device. A claim characterized in that the closing part is made of a material that can cause elastic deformation so that elastic deformation occurs when the closing part and the inner tank wall face each other and come into contact, and the contact area is appropriately sealed. Item 9. A sealed drainage device for a drum washing machine according to item 9 . The closing component has a sealing surface that seals with the drain port, and a projection of the sealing surface on the inner tank wall along the tank diameter at least covers the drain port,
Any one of claims 8 to 10 , wherein the sealing surface is provided in the same shape facing the inner tank wall on the outer periphery of the drain port, and is in close contact with the inner tank wall in an appropriate manner in a sealing manner. Sealed drainage device for drum washing machines as described in Section. The inner tank wall on the outer periphery of the drain port is a flat part parallel to the sealing surface, and the flat part or the sealing surface is provided with at least one sealing convex part that protrudes and extends in opposition,
The sealed drainage device for a drum washing machine according to claim 11 , wherein the sealing surface of the closing part is an arcuate surface having the same shape as the inner tub wall. The closing component is attached to the inner tank wall by a mounting structure so as to be movable in the axial direction of the drain port, and a spring is provided between the closing component and the mounting structure to push the sealing member and close the drain port. The members are clamped, and the closing part is connected to the weight directly or through a transmission structure, and when the rotational speed of the inner tank exceeds a predetermined rotational speed V0, the closing part closes in the tank due to the centrifugal force of the weight. The sealed drainage device for a drum washing machine according to any one of claims 8 to 12 , characterized in that the drain opening is opened by moving toward the center of the drum washing machine. 14. The sealed drainage device for a drum washing machine according to claim 13 , wherein the protrusion and the drain port face each other and are in close contact with each other in a sealed manner, and the drain port is closed by facing and in close contact with each other in a sealed manner. The drum washing machine is a drum washing machine, and the inner tub of the washing machine is a container in which water is stored during execution of a washing program, and the inner tub is provided with at least one drain port, and each drain port portion has the above-mentioned drain port. The sealed drainage device according to any one of claims 1 to 14 is installed, and the closing part of the sealed drainage device separates the sealing member from the inner tank wall by the action of centrifugal force when the inner tank rotates. Drum washing machine that opens the drain port. The side wall of the inner tank is provided with at least one lifting rib, the lifting rib is hollow inside and communicates with the inside of the inner tank, and the side wall of the inner tank is provided with at least one lifting rib. 16. The drum washing machine according to claim 15 , further comprising at least one drain port communicating with the hollow portion, and a closing part located inside the lifting rib at the drain port portion.