A drum assembly and a washing machine

Abstract

This invention provides a drum assembly, which includes a cylindrical sidewall with a conical inclined surface on the sidewall, and a drain outlet connecting the inside and outside of the drum on the inclined surface. By placing the drain outlet on the inclined surface of the drum, this invention does not occupy space in the diameter direction of the drum, allowing for a larger effective washing capacity for a washing machine of the same volume. This invention also describes a washing machine equipped with the aforementioned drum assembly.

Description

Technical Field

[0001] This invention belongs to the field of washing machine technology, specifically relating to a drum assembly and a washing machine. Background Technology

[0002] In the prior art, drum washing machines generally include a drum and an outer drum that are nested together. The outer drum is sealed to hold water, while the drum holds clothes and is used to tumble and wash them by rotating the drum. At the same time, the drum is provided with dewatering holes so that water in the outer drum flows into the drum through the dewatering holes to soak the clothes in the drum, water in the drum flows out to the outer drum through the dewatering holes, and water on the clothes in the drum is discharged to the outer drum through the dewatering holes when the drum rotates at high speed, so as to achieve the purpose of washing clothes.

[0003] Meanwhile, in the aforementioned existing washing machines, because the drum is encased in an outer tub, the washing process involves the drum rotating to tumble and wash the clothes. This results in the washing capacity of the washing machine being based on the drum, leading to low utilization of the internal space and making it impossible to expand the washing capacity of the washing machine on the existing basis.

[0004] Even if some washing machines can seal the inner and outer drums, the drum is also fixed in a fixed state during the sealing process, and the drum cannot rotate when the washing machine is working.

[0005] In view of this, the present invention is proposed. Summary of the Invention

[0006] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide a drum assembly. The design of the drum itself sets the drain outlet at the inclined surface, thereby solving the problem that the drain outlet of the holeless drum washing machine occupies too much space in the diameter direction of the drum.

[0007] To solve the above-mentioned technical problems, the basic concept of the technical solution adopted by the present invention is as follows:

[0008] A roller assembly includes a cylindrical sidewall with a conical inclined surface on the sidewall, and a drain outlet on the inclined surface connecting the inside and outside of the roller.

[0009] Furthermore, the inclined surface is a conical surface with a gradually increasing cylinder diameter arranged in a circle around the cylinder axis, and at least a portion of the drain outlet is located at the maximum diameter of the conical surface.

[0010] Furthermore, the inclined surface is disposed at one end of the roller sidewall;

[0011] Preferably, the inclined surface is located at the end where the sidewall of the roller intersects with the bottom of the roller.

[0012] Furthermore, the drain outlet is provided through the vertical line of the inclined surface, and a sealing valve is provided at the drain outlet; the sealing valve includes a valve body covering the drain outlet, and the valve body is connected to the inclined surface through an elastic restoring member, so that the valve body blocks the drain outlet from the inside out under the action of the elastic restoring member.

[0013] Furthermore, a water collection trough is provided outside the drain outlet, and the bottom of the water collection trough is connected to the drain pipe to collect the water flow from the drain outlet and discharge it outside.

[0014] Preferably, when the drum is in the fixed drainage position, the drain outlet is at the lowest point of the drum, and the water flow in the drum converges and flows towards the drain outlet, flowing outward from the drain outlet opened by the self-sealing valve.

[0015] Furthermore, when the drum rotates at high speed, the valve body of the sealing valve moves towards the center of the drum along the vertical direction of the inclined surface under the action of centrifugal force, so as to open the drain port provided on the bottom of the drum.

[0016] Furthermore, the inner side wall of the drum is provided with lifting ribs, the lifting ribs are hollow inside and connected to the inside of the drum, and the conical surface is provided with at least one drain outlet connected to the hollow part of the lifting ribs.

[0017] Furthermore, a water outlet channel is provided at one end where the side wall of the drum intersects with the bottom of the drum. One end of the water outlet channel is connected to the drain outlet, and the other end extends out of the drum along the axis of the drum and is connected to the drain pipe.

[0018] Furthermore, the hollow part of the lifting rib is provided with a mounting seat, which is fixed to the side wall of the drum. The axis of the mounting seat extends along the vertical direction of the inclined surface. The valve body can move along the axis of the mounting seat. One end of the valve body passes through the mounting seat and is connected to the end of the centrifugal hammer. The other end of the valve body is correspondingly set with the drain port provided on the end of the drum.

[0019] The present invention also describes a washing machine, which includes a water supply device and the above-described drum assembly, wherein the water supply device is used to supply water to the water chamber.

[0020] By adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art:

[0021] 1. The present invention places the drain outlet on the inclined surface of the drum, which does not occupy the space in the diameter direction of the drum body, and can make the effective washing capacity of the washing machine of the same volume larger.

[0022] 2. The present invention has a hidden drain outlet inside the drum lifting rib, so that water in the drum can be discharged from the hidden drain outlet. At the same time, a sealing valve is set at the drain outlet to realize the centrifugal force of the drum rotating at high speed to control the valve body of the sealing valve, so that the drain outlet opens and closes accordingly. Thus, when the washing machine performs the spin-drying program, the centrifugal force of the drum rotating at high speed acts on the valve body of the sealing valve, and the drain outlet opens, so that the water in the drum is drawn towards the larger end by the centrifugal force and flows out through the drain outlet inside the lifting rib for siphon drainage.

[0023] 3. The drum of the present invention adopts a non-perforated drum design. During washing, the inside is a closed chamber with ventilation holes. The washing water can be independently held during washing and rinsing. There is no water between the inner drum and the outer drum, thereby achieving the purpose of water saving. At the same time, it avoids the formation of dirt between the inner drum and the outer drum, keeps the drum wall clean, and improves the user experience.

[0024] 4. The sealing valve of the present invention seals the drain outlet by sealing the gasket, so that the drum washing machine with a non-perforated inner drum keeps the drain outlet closed during washing and rinsing, and realizes that the non-perforated inner drum can hold water independently.

[0025] At the same time, the present invention has a simple structure, significant effects, and is suitable for widespread use.

[0026] The specific embodiments of the present invention will now be described in further detail with reference to the accompanying drawings. Attached Figure Description

[0027] The accompanying drawings, as part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments and descriptions of the invention are used to explain the invention, but do not constitute an undue limitation of the invention. Obviously, the drawings described below are merely some embodiments, and those skilled in the art can obtain other drawings based on these drawings without creative effort. In the drawings:

[0028] Figure 1 This is a schematic diagram of the structure in an embodiment of the present invention, showing the drain outlet located on the inclined surface of the roller;

[0029] Figure 2 This is a partially enlarged structural diagram of the drum drain outlet in an embodiment of the present invention;

[0030] Figure 3 This is the roller assembly in the embodiment of the present invention.

[0031] The main components in the diagram are as follows: 1. Drum; 2. Inclined surface; 3. Drain outlet; 4. Lifting rib; 5. Sealing valve; 6. Valve body; 7. Centrifugal weight; 8. Shaft hole; 9. Mounting base; 10. Sealing gasket; 11. Drum bottom; 12. Drum side wall; 13. Water collection trough; 14. Drain pipe; 15. Water outlet channel.

[0032] It should be noted that these accompanying drawings and textual descriptions are not intended to limit the scope of the invention in any way, but rather to illustrate the concept of the invention to those skilled in the art by referring to specific embodiments. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0034] In the description of this invention, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0035] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0036] This invention provides a washing machine, which includes a shell and an inner drum inside the shell. The axis of the inner drum extends horizontally or is gradually inclined downward from front to back. The front end of the inner drum is an open inner drum opening, and the rear end is a sealed inner drum bottom. The inner drum wall has no through holes, so that the inside of the inner drum forms a sealed container with only the front opening.

[0037] Furthermore, the washing machine in this embodiment of the invention can be any existing washing machine with a sealed inner drum formed after the door is closed. During the spin-drying process, the inner drum is controlled to rotate at high speed to smoothly discharge water from the clothes, thus achieving the normal spin-drying process for a washing machine without a perforated inner drum. Therefore, the washing machine in this embodiment of the invention is not limited to the structure shown in the drawings. For example, a conventional washing machine can be used, simply by setting the inner drum to have no spin-drying holes and forming a sealed container after the door is closed.

[0038] Example 1

[0039] like Figures 1 to 3As shown in the figure, this embodiment introduces a drum assembly, which includes a cylindrical sidewall that forms an independent container for washing water. The drum sidewall 12 has a conical inclined surface 2. The inclined surface 2 has a drain outlet 3 that connects the inside and outside of the drum 1. A sealing valve 5 is provided at the drain outlet 3, which moves and opens and closes along the vertical direction of the inclined surface 2. When the drum 1 rotates at high speed, the valve body 6 of the sealing valve 5 moves along the vertical direction of the center of the inclined surface 2 under the action of centrifugal force to open the drain outlet 3 of the drum 1.

[0040] With the above settings, the drain outlet 3 is positioned on the inclined surface 2 of the drum 1, without occupying the space in the diameter direction of the drum 1 itself, thereby increasing the effective washing space of the drum 1 and thus improving the washing effect.

[0041] like Figure 1 As shown in this embodiment of the invention, the inclined surface 2 on the side wall 12 of the drum is a conical surface that gradually increases in diameter outwards and is arranged around the drum axis. At least part of the drain outlet 3 is located at the maximum diameter of the conical surface. This ensures that the drain outlet 3 does not occupy too much space. At the same time, during the drainage process, the water pressure is the greatest at the maximum diameter of the conical surface. The location of the drain outlet 3 at this position ensures the maximization of the drainage water pressure, allowing the water in the drum 1 to be drained quickly without any excess water remaining.

[0042] An inclined surface 2 is disposed at one end of the drum side wall 12; preferably, the inclined surface 2 is disposed at the end where the drum side wall 12 intersects with the drum bottom 11. Disposing the inclined surface 2 at the drum bottom 11 ensures that when the washing machine drains water, the water flows towards the bottom of the drum and is discharged through the drain outlet 3, while also preventing water from spilling out of the drum outlet during the spin cycle.

[0043] In this embodiment, a water collection trough 13 is provided outside the drain outlet of the roller, and the bottom of the water collection trough 13 is connected to the drain pipe 14 to collect the water flow from the drain outlet of the roller and discharge it. A drain valve is provided at the drain pipe 14 to control the opening and closing of the drain pipe 14.

[0044] In this embodiment, the drain outlet is located on an inclined surface. When the drum is in a fixed drainage position, the drain outlet rotates to be directly below the drum axis. The water collection tank 13 includes a groove corresponding to the drain outlet. The rear sidewall of the groove extends vertically upward to the rear side of the drain outlet and is a certain distance away from the drain outlet to guide the water flowing out of the drain outlet into the water collection tank 13, preventing the drainage water flowing backward from the horizontally positioned drain outlet from splashing onto the outside of the washing machine. At the same time, the front sidewall of the water collection tank 13 is in close contact with the lower part of the drum, or the gap is extremely small, to ensure that water in the water collection tank 13 will not splash out from the front end, thereby preventing the inner drum from overflowing.

[0045] like Figures 1 to 2As shown, in this embodiment, a lifting rib 4 is provided on the inner side of the drum sidewall. The lifting rib 4 is hollow inside and communicates with the inside of the drum 1. At least one drain port 3 is provided on the drum sidewall 12 corresponding to the hollow part of the lifting rib 4. The drain port 3 connects the hollow part of the lifting rib 4 to the outside, so that the washing water flowing into the hollow part of the lifting rib 4 can be discharged out through the drain port 3. The drain port 3 is hidden inside the lifting rib 4, so that the water in the drum 1 can be discharged out through the hidden drain port 3, which is more aesthetically pleasing. The drain port 3 is arranged through the vertical line of the inclined surface 2. At the same time, a sealing valve 5 is provided at the drain port 3 to controllably open and close the drain port 3, so that the water flowing into the hollow part of the lifting rib 4 can be opened and closed through the drain port 3 by the action of the sealing valve 5.

[0046] In this embodiment, the drain outlet on the roller is set as a tapered hole that gradually widens from the inside to the outside. The small end of the tapered hole is closed, and the side wall of the tapered hole is provided with a through hole to connect the inside and outside of the roller. The valve body is a plate structure that covers the large end of the tapered hole. One end of the sealing gasket is connected to the small end of the tapered hole, and the other end is connected to the valve body. The elastic return member is in a tensioned state to apply a thrust to the valve body in the direction of the outside of the roller, so that the valve body blocks the drain outlet.

[0047] In this embodiment, the side wall of the lifting rib 4 is provided with multiple through holes to connect the hollow part of the lifting rib 4 with the inside of the roller 1, so that the water in the roller 1 can flow smoothly into the inside of the lifting rib 4 through the through holes.

[0048] A gap is provided at the bottom of the lifting rib 4 where it connects with the side wall 12 of the drum. The gap forms a water flow channel connecting the hollow part inside the lifting rib 4 with the inside of the drum 1, so that the water in the drum 1 can flow into the hollow part of the lifting rib 4 through the water flow channel.

[0049] In this embodiment, the sealing valve 5 includes a valve body 6 and a centrifugal weight 7. The valve body 6 is connected to the centrifugal weight 7. When the drum 1 rotates at high speed, the centrifugal weight 7 moves up and down radially along the drum 1 under the action of centrifugal force, pulling the valve body 6 to move away from the inclined surface 2 to open the corresponding drain port 3. Preferably, the weight of the centrifugal weight 7 is greater than the weight of the valve body 6, so that the direction of the centrifugal force at the connection between the centrifugal weight 7 and the valve body 6 is such that the valve body 6 moves away from the inclined surface 2. More preferably, in order to enhance the effect of the centrifugal force, the weight of the centrifugal weight 7 is more than twice the weight of the valve body 6, so that the valve body 6 can reliably move away from the inclined surface 2 under the action of centrifugal force, overcoming the influence of the centrifugal weight 7 and friction.

[0050] The centrifugal weight 7 has a protruding end with a pivot hole 8. The pivot hole 8 is a closed-shaped through hole with four sides connected end to end. Two opposite sides are parallel straight sides, and the other two opposite sides are arc edges with the same center as the radius. The valve body 6 is installed in the pivot hole 8, and the centrifugal weight 7 can slide along the straight sides without being restricted by the connection. At the same time, the pivot hole 8 also allows the centrifugal weight 7 to rotate up and down around the connection.

[0051] In this embodiment, the hollow part of the lifting rib 4 is provided with a mounting seat 9. The mounting seat 9 is fixed to the drum side wall 12. The axis of the mounting seat 9 extends along the vertical direction of the inclined surface 2. The valve body 6 can move along the axis of the mounting seat 9. One end of the valve body 6 passes through the mounting seat 9 and is connected to the end of the centrifugal weight 7. The other end of the valve body 6 is correspondingly set with the drain port 3 provided on the drum side wall 12.

[0052] In this embodiment, the roller 1 is provided with a mounting seat 9 for mounting the valve body 6. The mounting seat 9 includes a limiting cavity extending along the vertical direction of the inclined surface 2. The valve body 6 can move along the vertical direction of the inclined surface 2 and is disposed within the limiting cavity. The drain outlet 3 is disposed at one end of the limiting cavity near the outer circumference of the roller 1. Through the above arrangement, the valve body 6 can move within the limiting cavity provided on the roller 1, so that the valve body 6 can only produce radial extension and contraction displacement along the mounting seat 9 due to the influence of the limiting cavity. This ensures that when the valve body 6 is subjected to the centrifugal force of the high-speed rotation of the roller 1, it can move radially along the mounting seat 9 to open or close the drain outlet 3 at the end of the limiting cavity, thus preventing the valve body 6 from becoming skewed.

[0053] By setting a mounting seat 9 on the side wall 12 of the drum that extends into the hollow part of the lifting rib 4, the centrifugal weight 7 is installed at a certain height from the shaft hole 8 when connected to the valve body 6. The protruding end allows for a certain height difference between the centrifugal weight 7 and the side wall 12 of the drum, thus achieving the purpose of providing displacement space for the centrifugal weight 7 to move downward and fall, and to pry the valve body 6.

[0054] The water outlet channel 15 is located at the end where the roller side wall 12 intersects with the roller bottom 11. One end of the water outlet channel 15 is connected to the drain outlet 3, and the other end extends out of the roller along the roller axis and is connected to the drain pipe 14.

[0055] In this embodiment, the bottom 11 of the drum is provided with multiple water outlet channels 15. One end of each water outlet channel 15 is evenly distributed at an equal angle on the outer periphery of the bottom 11 of the drum and connected to the inside of the drum 1. The other end of each water outlet channel 15 is connected to the bottom 11 of the inner cylinder and passes through the bottom 11 of the inner cylinder and is connected to the drain pipe 14.

[0056] In this embodiment, the ends of adjacent water outlet channels 15 are staggered on the outer periphery of the inner cylinder bottom 11. By providing multiple evenly distributed water outlet channels 15 with their ends located at the middle or outer periphery on the bottom 11 of the drum, the water flow at various parts of the bottom 11 of the drum is adsorbed and discharged, thereby improving the water discharge efficiency of the drum 1.

[0057] In this embodiment, the sealing valve 5 is fixedly connected to the drum 1 so that it rotates together with the drum 1. By fixing the sealing valve 5 to the drum 1, when the washing machine performs the spin-drying program, both the valve body 6 and the centrifugal weight 7 of the sealing valve 5 rotate at high speed together with the drum 1, ensuring that the valve body 6 is subjected to centrifugal force and opens the drain port 3 provided on the drum 1 accordingly.

[0058] In this embodiment, a sealing valve 5 is provided at the drain outlet 3. The valve body 6 of the sealing valve 5 moves radially along the mounting base 9 under the action of the limiting structure and the centrifugal force of the high-speed rotation of the roller 1, so as to open the drain outlet 3.

[0059] The mounting base 9 is coaxially arranged corresponding to the drain outlet 3. The interior of the mounting base 9 is hollow to accommodate the valve body 6. One end of the valve body 6 extends from the top of the mounting base 9 and is hinged to the centrifugal weight 7. The other end is sealed with a sealing gasket 10 corresponding to the drain outlet 3.

[0060] In this embodiment, the hollow area inside the mounting base 9 is set as a sealed chamber so that when the water in the hollow part of the lifting rib 4 flows out from the mounting base 9 to the drain outlet 3, a pressure difference is formed at both ends of the flow channel formed inside the mounting base 9. This causes the water inside the lifting rib 4 to form a siphon effect under the action of the pressure difference, and all the water inside the lifting rib 4 is discharged out through the drain outlet 3.

[0061] In this embodiment, the valve body 6 of the sealing valve 5 is connected to the drum 1 via an elastic return member. This elasticity applies a force to the valve body 6, pushing it to close the corresponding drain outlet 3. When the drum 1 rotates at high speed, centrifugal force overcomes the elastic force of the return member, causing the valve body 6 to move and open the drain outlet 3. By providing an elastic return member on the sealing valve 5, the valve body 6 is initially in a closed position, blocking the drain outlet 3. Simultaneously, after the sealing valve 5 opens due to centrifugal force and the washing machine stops executing the spin-drying program, the valve body 6 is pulled back to its initial closed position by the elastic return member, blocking the drain outlet 3. This ensures that the drum 1 is a sealed container during the washing and rinsing programs, preventing the outflow of washing or rinsing water.

[0062] Example 2

[0063] This embodiment introduces a washing machine equipped with the drum assembly described in the above embodiments, which is the inner drum in this embodiment of the invention. In order to drain the water after the clothes are detached from the inner drum and to achieve normal washing by sealing the inner drum with water during the washing machine's operation, the following settings are made:

[0064] A front-loading washing machine includes an inner drum that independently holds the wash water during washing. The inner drum features a non-perforated design, creating a closed chamber with ventilation holes during washing. This independent water holding during washing and rinsing eliminates water between the inner and outer drums, thus saving water and preventing the formation of dirt between them, keeping the drum walls clean and improving the user experience. A drain outlet 3 is located on the inner drum for draining water during drainage and / or spin-drying. A sealing valve 5, which moves and opens / closes along the vertical direction of the inclined plane 2, is located at the drain outlet 3. When the inner drum rotates at high speed, the valve body 6 of the sealing valve 5 moves under centrifugal force to open the drain outlet 3.

[0065] In this embodiment of the invention, a door cover is installed on the washing machine shell. The door cover is sealed to the lower part of the inner drum opening so that the door cover is fastened to the inner drum opening to seal the water-filled part of the inner drum. A certain gap is provided between the upper end of the door cover and the inner drum opening. The water supply device is connected to the inside of the inner drum through the gap so that water can enter the inner drum through the gap at the upper part of the door cover.

[0066] The washing machine drum is a sealed container with the inner drum opening closed by the door cover. The inner drum side wall has a conical inclined surface 2. The inclined surface 2 has a drain outlet 3 that connects the inside and outside of the inner drum. The inner drum side wall is provided with multiple lifting ribs 4. The lifting ribs 4 are hollow inside and connected to the inside of the inner drum. The inner drum side wall is provided with at least one drain outlet 3 that is connected to the hollow part of the lifting rib 4. A sealing valve 5 is provided at the drain outlet 3 and located inside the lifting rib 4. When the inner drum rotates at high speed, the valve body 6 of the sealing valve 5 moves along the vertical direction of the inclined surface 2 under the action of centrifugal force to open the drain outlet 3 provided on the inner drum side wall.

[0067] In this embodiment, the lifting rib 4 is installed on the inner cylinder side wall by fastening screws. The lifting rib 4 has screw posts for mounting fastening screws, and through holes for fastening screws to pass through are opened on the inner cylinder side wall.

[0068] By setting the bottom of the inner drum into a conical inclined surface 2, the water in the inner drum will flow to the bottom due to centrifugal force when the inner drum rotates at high speed, and flow out from the drain outlet 3 set on the inclined surface 2. This ensures that all the water in the inner drum is discharged out during the high-speed spin-drying process, thus achieving the goal of draining all the water from the clothes in the inner drum during the spin-drying program and avoiding water accumulation in the inner drum.

[0069] In this embodiment, the sealing valve 5 includes a valve body 6 and a centrifugal weight 7, which are hinged together. When the inner drum rotates at high speed, the centrifugal weight 7 moves towards the outer periphery of the inner drum under the action of centrifugal force, pulling the valve body 6 along the vertical line of the inclined surface 2 to open the corresponding drain outlet 3. By setting the sealing valve 5 on the bottom of the washing machine inner drum, the centrifugal force acts on the centrifugal weight 7 when the inner drum rotates at high speed, causing the centrifugal weight 7 to move towards the outer periphery of the inner drum, thereby pulling the valve body 6 away from the inclined surface 2 along the vertical line of the inclined surface 2, thus achieving the purpose of opening the drain outlet 3 at the bottom of the inner drum by utilizing the centrifugal force when the inner drum rotates at high speed.

[0070] Through the above settings, a drain outlet 3 is hidden inside the inner drum lifting rib 4, thereby achieving the purpose of water flowing out of the inner drum through the hidden drain outlet 3; at the same time, a sealing valve 5 is set at the drain outlet 3, so as to use the centrifugal force of the inner drum rotating at high speed to control the valve body 6, so that the drain outlet 3 opens and closes accordingly. Thus, when the washing machine performs the spin-drying program, the centrifugal force of the inner drum rotating at high speed acts on the valve body 6 of the sealing valve 5, and the drain outlet 3 automatically opens the inner drum to drain accordingly.

[0071] In this embodiment, the inner cylinder is provided with multiple drain ports 3, and each drain port 3 is provided with a corresponding sealing valve 5. The valve body 6 of the sealing valve 5 moves radially along the mounting base 9 under the action of the limiting structure and the centrifugal force of the high-speed rotation of the inner cylinder, so as to open the drain port 3 accordingly. Preferably, each drain port 3 is symmetrically arranged with respect to the center of the inner cylinder to ensure that the center of the inner cylinder coincides with the center of gravity and to avoid the occurrence of inner cylinder offset.

[0072] In this embodiment, the valve body 6 of the sealing valve 5 is connected to the inner drum via an elastic return member. This elasticity applies a force to the valve body 6, pushing it to close the corresponding drain outlet 3. When the inner drum rotates at high speed, centrifugal force overcomes the elastic force of the return member, causing the valve body 6 to move and open the drain outlet 3. By providing an elastic return member on the sealing valve 5, the valve body 6 is ensured to be in the closed position initially, blocking the drain outlet 3. Simultaneously, after the sealing valve 5 opens due to centrifugal force and the washing machine stops executing the spin-drying program, the valve body 6 is pulled back to its initial closed position by the elastic return member, blocking the drain outlet 3. This ensures that the inner drum remains a sealed container during the washing and rinsing programs, preventing the outflow of washing or rinsing water.

[0073] In this embodiment, when the washing machine is in the spin-drying state, the inner drum is in a high-speed rotating state. The water in the inner drum is subjected to centrifugal force and flows against the inner wall. It flows into the interior of the lifting rib 4 from the gap between the inner drum wall and the lifting rib 4. At this time, the centrifugal weight 7 is subjected to centrifugal force and moves towards the outer periphery of the inner drum. The centrifugal weight 7 provides a prying force to the valve body 6 in the direction of the inner drum axis through the protruding end. The centrifugal force of the centrifugal weight 7 on the valve body 6 overcomes the elastic force, causing the valve body 6 to be radially displaced in the mounting seat 9 and opening the drain port 3.

[0074] When the washing machine is not in the spin-drying state, the inner drum is not in a high-speed rotation state, the centrifugal weight 7 is no longer subjected to centrifugal force, and the elastic return element is in a pressed state, exerting a pushing force on the valve body 6 in the direction of the outer circumference of the inner drum, causing the valve body 6 to move in the direction of the outer circumference of the inner drum until the sealing valve 5 is closed. When the inner drum is in the washing or rinsing program, the elastic return element always provides elastic force to the valve body 6 to ensure that the valve body 6 always blocks the drain outlet 3, thereby ensuring that the drain outlet 3 of the inner drum is always in a closed state.

[0075] During normal washing, the drain valve is closed, the inner drum rotates normally, and the water in the inner drum will not flow out of the drain outlet, allowing for normal washing of clothes. During the draining process, the inner drum rotates to a fixed drain position, the stepper motor drives the rotating wheel to rotate, and the rotating wheel drives the connecting rod to move towards the inner drum. The end of the connecting rod pushes the valve body of the sealing valve at the corresponding position to move into the inner drum. The valve body is pushed to open the drain outlet by overcoming the elastic return element, and the water in the inner drum flows out from the opened drain outlet. The outflowing water is collected in the water collection tank 13 and then discharged to the outside of the washing machine through the drain pipe 14, thus achieving the purpose of draining the water in the inner drum.

[0076] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-described technical content to create equivalent embodiments without departing from the scope of the present invention. The implementation schemes in the above embodiments can be further combined or replaced. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A roller assembly, characterized in that, The roller assembly includes a cylindrical sidewall, and the roller sidewall (12) has a conical inclined surface (2) around it, and the inclined surface (2) has a drain outlet (3) that connects the inside and outside of the roller (1); The inclined surface (2) is a conical surface with the cylinder diameter gradually increasing outward and arranged around the cylinder axis. At least part of the drain outlet (3) is located at the maximum diameter of the conical surface. The inclined surface (2) is located at the end where the roller sidewall (12) intersects with the bottom of the roller (11). The drain outlet (3) is provided through the vertical line of the inclined surface (2), and a sealing valve (5) is provided at the drain outlet (3); the sealing valve (5) includes a valve body (6) covering the drain outlet, and the valve body (6) is connected to the inclined surface (2) through an elastic recovery member, so that the valve body (6) blocks the drain outlet (3) from the inside to the outside under the action of the elastic recovery member. When the drum (1) rotates at high speed, the valve body (6) of the sealing valve (5) moves towards the middle of the drum (1) along the vertical direction of the inclined surface (2) under the action of centrifugal force, so as to open the drain port (3) provided on the bottom (11) of the drum. The end of the roller sidewall (12) that intersects with the bottom of the roller (11) is provided with a water outlet channel (15). One end of the water outlet channel (15) is connected to the drain outlet (3), and the other end passes through the roller (1) along the axis of the roller (1) and is connected to the drain pipe (14).

2. The roller assembly according to claim 1, characterized in that, The drain outlet (3) is provided with a water collection tank (13) on the outside. The bottom of the water collection tank (13) is connected to the drain pipe (14) so ​​that the water flow from the drain outlet is collected and discharged.

3. A roller assembly according to claim 2, characterized in that, When the drum (1) is in a fixed drainage position, the drain outlet (3) is at the lowest point of the drum (1). The water flow in the drum (1) converges and flows to the drain outlet (3), and flows outward from the drain outlet (3) opened by the self-sealing valve (5).

4. A roller assembly according to any one of claims 1 to 3, characterized in that, The inner side of the roller sidewall (12) is provided with lifting ribs (4), the lifting ribs (4) are hollow inside and connected to the inside of the roller (1), and the conical surface is provided with at least one drain outlet (3) connected to the hollow part of the lifting ribs (4).

5. A roller assembly according to claim 4, characterized in that, The hollow part of the lifting rib (4) is provided with a mounting seat (9). The mounting seat (9) is fixed to the side wall of the drum (1). The axis of the mounting seat (9) extends along the vertical direction of the inclined surface (2). The valve body (6) can move along the axis of the mounting seat (9). One end of the valve body (6) passes through the mounting seat (9) and is connected to the end of the centrifugal weight (7). The other end of the valve body (6) is correspondingly set with the drain port (3) provided on the end of the drum (1).

6. A washing machine, characterized in that, The washing machine includes a water supply device and a drum assembly according to any one of claims 1 to 5, wherein the water supply device is used to supply water to the water chamber.

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