Barrel assembly of clothes washing and drying integrated equipment and clothes washing and drying integrated equipment

Abstract

The invention belongs to the technical field of clothes processing equipment, and discloses a drum assembly of clothes washing and drying integrated equipment and the clothes washing and drying integrated equipment, and the drum assembly is provided with a mounting drum which extends upwards from the upper area of the peripheral wall of an outer drum; a filter screen is arranged at the bottom end of the filter part, and the filter part can be movably arranged in the mounting cylinder up and down; the filter screen moves in the outer cylinder peripheral wall, the inner cylinder peripheral wall and the space between the outer cylinder peripheral wall and the inner cylinder peripheral wall. According to the washing machine, the filtering part is movably arranged in the mounting barrel, in the drying state, negative pressure formed at the top end of the mounting barrel can drive the filtering part to move upwards, drying airflow passes through the filtering net to achieve the filtering effect, and in the washing process, the filtering part moves downwards to enable the filtering net to be close to the peripheral wall of the inner barrel; therefore, thread scraps adhered to the filter screen can be cleaned through rotation of the inner cylinder, a filter structure on the filter screen is prevented from being blocked, and the trouble of manual cleaning by a user is omitted.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of clothes processing equipment, in particular to a drum assembly of a clothes washing and drying integrated device and the clothes washing and drying integrated device. BACKGROUND

[0002] With the development of social economy, people's demand for clothes no longer stops at washing, but also pursues more comfortable and healthy wearing. Since the clothes after drying are equivalent to de-mite, sterilization and disinfection, and the clothes fiber is more fluffy, the wearing is more comfortable, and the demand for clothes drying after washing is increasing.

[0003] The washing and drying integrated machine is deeply loved by consumers because it integrates washing and drying functions in one device. However, since the clothes will generate lint due to friction during washing, the lint will flow with the drying air flow during the drying process and continuously deposit and adhere to the air duct, fan, heating pipe and the like, thereby increasing the ventilation resistance and even causing fire risk.

[0004] In order to solve the above problems, the existing scheme usually increases a filter screen in the air duct to intercept the lint in the drying air flow. However, with the continuous accumulation of lint at the filter screen, the filter screen is easily blocked, affecting the passage of the drying air flow. Therefore, the filter screen needs to be cleaned frequently, resulting in poor user experience.

[0005] Therefore, the present application is proposed. SUMMARY

[0006] The technical problem to be solved by the present application is to overcome the shortcomings of the prior art and provide a drum assembly of a clothes washing and drying integrated device and the clothes washing and drying integrated device, which can filter the lint in the drying air flow and simultaneously realize self-cleaning of the filter structure for intercepting the lint.

[0007] To solve the above technical problems, the basic idea of the technical solution of the present application is:

[0008] A drum assembly of a clothes washing and drying integrated device has:

[0009] an installation drum extending upward from the upper region of the outer drum peripheral wall; and

[0010] a filter member having a filter screen at the bottom end, which is movably arranged in the installation drum;

[0011] The filter screen is movable in the space between the outer drum peripheral wall, the inner drum peripheral wall and the space therebetween.

[0012] Further, in the washing state and / or the dehydration state, the filter screen is located between the outer drum peripheral wall and the inner drum peripheral wall, or in contact with the inner drum peripheral wall.

[0013] In the drying state, the filter screen is matched with the opening of the bottom end of the mounting cylinder on the outer cylinder wall;

[0014] Preferably, the filter screen has a circular arc surface structure, the axis of the circular arc surface structure is parallel to or coincides with the axis of the outer cylinder; the radius of curvature of the circular arc surface structure is greater than or equal to the radius of the inner cylinder outer wall, and less than or equal to the radius of the outer cylinder inner wall.

[0015] Further, the cylinder assembly is provided with an elastic member, which applies an upward elastic force to the filter member, keeping the filter screen separated from the inner cylinder wall in the drying state;

[0016] Preferably, the filter member is arranged on the elastic member;

[0017] In the washing state and / or the dehydration state, the filter member moves downward in the mounting cylinder to compress the elastic member;

[0018] In the drying state, the filter member moves upward in the mounting cylinder to release the elastic member.

[0019] Further, the filter member has an air outlet cylinder coaxially arranged with the mounting cylinder, and the filter screen is arranged at the bottom end of the air outlet cylinder; the outer wall of the air outlet cylinder is arranged in a spaced manner with the inner wall of the mounting cylinder;

[0020] Preferably, the elastic member is arranged in the space between the outer wall of the air outlet cylinder and the inner wall of the mounting cylinder.

[0021] Further, the upper region of the outer wall of the air outlet cylinder is provided with a protruding structure, and the inner wall of the mounting cylinder has a stop surface arranged in a spaced manner below the protruding structure;

[0022] The upper end of the elastic member abuts against or is fixed to the protruding structure, and the lower end abuts against the stop surface.

[0023] Further, the inner wall of the mounting cylinder is provided with a guide groove extending along the axial direction thereof, and the air outlet cylinder is provided with a matching protruding portion protruding from the outer wall thereof;

[0024] The matching protruding portion is slidably arranged in the guide groove;

[0025] Preferably, the top end of the air outlet cylinder is provided with a flange plate extending outwardly around the circumference thereof, and the matching protruding portion protrudes from the outer circumference of the flange plate.

[0026] Further, the elastic member is arranged in the guide groove; the upper end of the elastic member abuts against or is fixed to the matching protruding portion, and the lower end of the elastic member abuts against the bottom end of the guide groove.

[0027] Further, the bottom end of the air outlet cylinder is provided with a sealing portion surrounding the outer circumference of the filter screen;

[0028] In the drying state, the filter piece moves upward in the mounting cylinder, and the sealing part is sealed against the inner wall of the outer cylinder around the bottom opening of the mounting cylinder;

[0029] Preferably, the sealing part is made of a flexible material.

[0030] More preferably, the sealing part extends outward at the outer periphery of the filter screen, and the area close to the extension end is bent upward.

[0031] Further, the inner wall of the outer cylinder is provided with a sealing fitting groove around the bottom opening of the mounting cylinder.

[0032] In the drying state, the sealing part moves upward into the sealing fitting groove along with the filter piece.

[0033] Preferably, in the drying state, the sealing part is sealed against the groove bottom wall of the sealing fitting groove.

[0034] Further, the air outlet cylinder is provided with a water permeable part, which extends upward from the lowest point where the air outlet cylinder is connected to the filter screen to a certain height.

[0035] Preferably, the mounting cylinder extends vertically upward, and the axis of the mounting cylinder is offset from the axis of the outer cylinder in the horizontal direction.

[0036] The water permeable part is arranged on the side of the air outlet cylinder away from the axis of the outer cylinder in the horizontal direction, and the rotation direction of the inner cylinder in the dehydration state is from one side to the other side.

[0037] Preferably, the pore size of the filter holes in the filter screen gradually increases in the flow direction of the drying air flow.

[0038] A laundry washing and drying integrated device has the cylinder assembly of the laundry washing and drying integrated device described above.

[0039] Compared with the prior art, the technical scheme has the following beneficial effects.

[0040] In the present application, the filter piece is movably arranged in the mounting cylinder. In the drying state, the negative pressure formed at the top end of the mounting cylinder drives the filter piece to move upward, so that the filter screen cooperates with the bottom opening of the mounting cylinder, and the drying air flow passes through the filter screen to achieve the filtering effect. In the washing state and / or the dehydration state of the washing process, the filter piece moves downward so that the filter screen approaches the inner cylinder wall, so that the lint adhered to the filter screen can be cleaned by the rotation of the inner cylinder, avoiding the blockage of the filtering structure on the filter screen, and saving the user from the trouble of manual cleaning.

[0041] The elastic member can further ensure that the filter screen is in a position separated from the inner cylinder wall in the drying state, thereby being capable of cooperating with the bottom opening of the mounting cylinder to filter the drying airflow. The outer peripheral wall of the air outlet cylinder is arranged in a spaced manner with the inner peripheral wall of the mounting cylinder, which can avoid friction resistance between the air outlet cylinder and the mounting cylinder, affect the up-down movement of the filter member, and provide installation space for the elastic member.

[0042] In the application, the limiting cooperation of the guide groove and the matching convex part can prevent the filter member from rotating relative to the mounting cylinder, thereby preventing the filter screen from being damaged due to interference with the inner cylinder. Meanwhile, the guide groove can also be used to limit the elastic member to prevent the elastic member from slipping off and failing.

[0043] In the application, the airflow driven by the rotation of the inner cylinder or the water flow thrown out by the inner cylinder can enter the air outlet cylinder through the water-permeable part, and be back-flushed from the inside to the outside of the filter screen to remove the lint adhered to the outside of the filter screen. When the down-moving amplitude of the filter member is small and the inner cylinder peripheral wall cannot directly contact the lint on the filter screen, the filter screen can also be effectively cleaned.

[0044] The specific embodiments of the application will be further described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS

[0045] The accompanying drawings, which are part of the present application, serve to provide a further understanding of the application, and the schematic embodiments of the application and their descriptions serve to explain the application, but do not constitute an improper limitation on the application. Obviously, the accompanying drawings described below are only some embodiments, and other drawings can be obtained by those skilled in the art without creative labor on the basis of the drawings. In the drawings:

[0046] Figure 1 is a structural schematic view of a cylinder assembly in an embodiment of the application;

[0047] Figure 2 is a schematic view of the relative positions of the filter member and the mounting cylinder in a drying state in an embodiment of the application;

[0048] Figure 3 is a schematic view of the relative positions of the filter member and the mounting cylinder in a dehydration state in an embodiment of the application;

[0049] Figure 4 is a structural schematic view of a filter member in an embodiment of the application;

[0050] Figure 5 is a partial sectional schematic view of a filter screen in an embodiment of the application.

[0051] In the figure: 100, inner cylinder; 200, outer cylinder; 201, clothing feeding port; 210, mounting cylinder; 211, guide groove; 220, sealing fitting groove; 300, filter element; 310, flange; 311, fitting convex part; 320, air outlet cylinder; 321, water permeable part; 330, filter screen; 331, sealing part; 332, filter hole; 400, elastic element.

[0052] It should be noted that the drawings and the written description are not intended to limit the scope of the present application in any way, but are merely to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0053] In order to make the purpose, technical scheme and advantages of the embodiments of the present application more clear, the technical scheme in the embodiments will be described clearly and completely below with reference to the drawings of the embodiments of the present application. The following embodiments are used to illustrate the present application, but are not used to limit the scope of the present application.

[0054] In the description of the present application, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are merely for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0055] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0056] As Figures 1 to 5 shown, the embodiments of the present application provide a cylinder assembly of a clothes washing and drying integrated device, and a clothes washing and drying integrated device having the cylinder assembly.

[0057] Specifically, the clothes washing and drying integrated device has both clothes washing and drying functions. The cylinder assembly includes an outer cylinder 200 and an inner cylinder 100 arranged coaxially, and the inner cylinder 100 is rotatably arranged inside the outer cylinder 200. In the washing state, clothes are placed in the inner cylinder 100, and water is filled in the outer cylinder 200. The clothes are repeatedly lifted and then dropped by rotating the inner cylinder 100, to achieve the cleaning effect. In the dehydration state, the inner cylinder 100 rotates at high speed, and the water in the clothes is thrown out by the centrifugal force and discharged through the dehydration holes on the inner cylinder 100.

[0058] The outer drum 200 is provided with an internally hollow mounting drum 210, and the mounting drum 210 is connected with a fan when the drum assembly is installed in the laundry washing and drying integrated apparatus. In the drying state, the fan is used to suck the hot and humid air inside the outer drum 200 and send it into the drying air duct. The other end of the drying air duct is communicated to the clothes feeding port 201 at the front part of the outer drum 200, and the drying air duct is provided with a condenser and a heater. The hot and humid air flows along the drying air duct, is cooled by the condenser to separate water, is heated by the heater to be heated, and is then sent into the outer drum 200 and the inner drum 100 through the clothes feeding port 201 to contact the clothes. The water in the clothes is carried out through the continuous circulation of the drying air flow, and the drying effect of the clothes is achieved.

[0059] As a specific embodiment, the condenser can be a separate structure arranged in the drying air duct.

[0060] As another specific embodiment, the condenser can also be a simple structure for injecting water into the mounting drum 210, and the hot and humid air is cooled by injecting the normal-temperature tap water to separate water. The injected tap water and the separated water flow along the inner circumferential wall of the outer drum 200 and do not affect the drying process of the clothes.

[0061] In order to avoid the lint carried in the drying air flow from adhering to the fan, the drying air duct or the heater and other positions in the circulation process, thereby causing the ventilation resistance and the fire hazard problem, a filtering structure is further arranged at the mounting drum 210 to intercept the lint when the hot and humid air enters the fan and the drying air duct. However, with the increase of the use time, the filtering structure is easily blocked by the lint, and is not easy to clean due to the limited setting position, which affects the circulation process of the drying air flow.

[0062] Embodiment One

[0063] As shown in the drawings, Figures 1 to 5 the embodiment provides a drum assembly of a laundry washing and drying integrated apparatus and a laundry washing and drying integrated apparatus with the drum assembly, which is used to solve the problem that the filtering structure is easily blocked by the lint and is not easy to clean.

[0064] Specifically, in the embodiment, the drum assembly includes the coaxially arranged outer drum 200 and the inner drum 100, and the upper region of the circumferential wall of the outer drum 200 is provided with the upwardly extending mounting drum 210, and the mounting drum 210 is internally hollow and communicated with the outer drum 200. The mounting drum 210 is internally provided with the filtering piece 300 with the filtering screen 330 at the bottom end.

[0065] The laundry washing and drying integrated device includes a fan connected to the top end of the mounting cylinder 210, the fan is further connected to a drying air duct, and a heater is arranged in the drying air duct. When the laundry washing and drying integrated device is drying laundry, the hot and humid air in the outer cylinder 200 first passes through the filter screen 330, and then enters the fan and the drying air duct connected to the mounting cylinder 210. The lint carried by the hot and humid air is intercepted by the filter screen 330, thereby preventing various problems caused by the lint adhering to the fan, the drying air duct, or the heater.

[0066] In the embodiment, the filter member 300 is movably arranged inside the mounting cylinder 210, thereby driving the filter screen 330 to move in the space between the outer cylinder 200 and the inner cylinder 100. That is, the filter screen 330 can be moved to the lowest position to contact the inner cylinder 100, or to the highest position to cooperate with the bottom opening of the mounting cylinder 210 on the outer cylinder 200.

[0067] Specifically, in the drying state, the fan operates to draw the hot and humid air in the outer cylinder 200 along the mounting cylinder 210, thereby forming a negative pressure at the top end of the mounting cylinder 210. The filter member 300 is driven to move upward along the mounting cylinder 210 under the action of the negative pressure. At this time, the filter screen 330 moves upward with the filter member 300 to a certain height, so that the filter screen 330 cooperates with the bottom opening of the mounting cylinder 210 on the outer cylinder 200 and does not contact the inner cylinder 100. The drying air flow passes through the filter screen 330 and enters the mounting cylinder 210, and the lint in the drying air flow can be effectively filtered by the filter screen 330.

[0068] It should be noted that the filter screen 330 cooperates with the bottom opening of the mounting cylinder 210, which means that the filter screen 330 covers or basically covers the bottom opening of the mounting cylinder 210, so that the drying air flow flows through the filter screen 330.

[0069] After the drying is completed, a certain amount of lint adheres to the filter screen 330, thereby increasing the overall weight of the filter member 300. At this time, the fan stops rotating, the negative pressure at the top end of the mounting cylinder 210 disappears, and the filter member 300 is affected by gravity and is lowered, and at most can be lowered to the position where the filter screen 330 contacts or nearly contacts the inner cylinder 100. The "nearly contacts" means that the inner cylinder 100 contacts the lint adhered to the lower side of the filter screen 330.

[0070] In this way, when the laundry washing and drying integrated device runs the laundry treatment program again, the lint adhered to the lower side of the filter screen 330 can contact the circumferential wall of the inner drum 100 in the washing state and the dewatering state of the washing stage, especially in the washing state. At this time, the rotation of the inner drum 100 can scrape the lint off the filter screen 330, achieving the self-cleaning effect of the filter screen 330. When the current program runs to the drying stage, there is basically no lint adhered to the filter screen 330, and in the drying state after the fan is started, efficient ventilation can be achieved to ensure the drying effect.

[0071] In a preferred structure, the filter screen 330 has a circular arc surface structure that can better fit the circumferential wall of the inner drum 100, which is more conducive to cleaning the lint hanging on the outer side of the filter screen 330 through the rotation of the inner drum 100.

[0072] In this embodiment, the filter screen 330 is preferably made of stainless steel, which has rust prevention capability. At the same time, it also has sufficient strength and will not be damaged due to contact and friction with the inner drum 100, or deformed due to collision with the inner drum 100, resulting in poor fitting of the circumferential wall of the inner drum 100, or even interference with the rotation of the inner drum 100.

[0073] As a specific implementation, a limiting structure is provided on the mounting drum 210 and / or the filter member 300, for limiting the maximum upward movement height of the filter member 300 in the drying state. Specifically, in the drying state, the filter member 300 moves upward under the action of negative pressure at the top end of the mounting drum 210, and stops at a certain position through the limiting structure, at which time the filter screen 330 is at a height substantially flush with the opening at the bottom end of the mounting drum 210.

[0074] It should be noted that the opening at the bottom end of the mounting drum 210 is not on the same horizontal plane in the circumferential direction, and the above-mentioned flush of the filter screen 330 with the opening at the bottom end of the mounting drum 210 means that the outer peripheral edge of the filter screen 330 is at substantially the same height as the corresponding position of the opening at the bottom end of the mounting drum 210.

[0075] In a specific structure, a limiting structure that protrudes inward can be provided on the inner circumferential wall of the mounting drum or at the bottom end of the mounting drum, and in the drying state, the filter member moves upward and stops against the limiting structure.

[0076] In another specific structure, the limiting structure is provided on the outer periphery of the filter screen, and in the drying state, the filter member moves upward so that the limiting structure stops against the inner circumferential wall of the outer drum.

[0077] In a further scheme of this embodiment, the drum assembly is provided with an elastic member 400, which applies an upward elastic force to the filter member 300, keeping the filter screen 330 separated from the circumferential wall of the inner drum 100 in the drying state.

[0078] Specifically, in the initial state, i.e. when the laundry drying integrated device is not running and no lint is attached to the filter screen 330, the filter piece 300 is kept at a certain height in the installation cylinder 210 by the elastic force provided by the elastic piece 400, so that the filter screen 330 is separated from the inner cylinder 100 and does not contact the inner cylinder 100.

[0079] In the drying state, the elastic force of the elastic piece 400 and the negative pressure at the top end of the installation cylinder 210 jointly act on the filter piece 300 to make the filter piece 300 rise, and the filter screen 330 is at a height matched with the opening at the bottom end of the installation cylinder 210, so as to ensure that the circulating airflow passes through the filter screen 330 and enters the installation cylinder 210, thereby ensuring the filtering effect.

[0080] After the filter screen 330 is attached with lint, the weight of the filter screen 330 increases, and after the fan stops, the filter piece 300 moves downward against the elastic force of the elastic piece 400. When the amount of attached lint is small, the filter screen 330 may stop at a position between the outer cylinder 200 and the inner cylinder 100 at a certain distance from the inner cylinder 100, and does not directly contact the inner cylinder 100. In the next laundry washing stage of the laundry processing program, the lint on the filter screen 330 increases in weight after being soaked in water, and the increased weight of the lint drives the filter piece 300 to further descend, so that the filter screen 330 approaches the inner cylinder 100.

[0081] If the distance of the filter piece 300 descending is large enough, in the washing state of the laundry washing stage, the inner cylinder 100 directly contacts the lint on the filter screen 330 when rotating, and the lint is scraped off to achieve cleaning. If the distance of the filter piece 300 descending is small, the washing water flow caused by the rotating inner cylinder 100 can also achieve a certain cleaning effect on the lint.

[0082] In the dehydration state of the laundry washing stage, the lint on the filter screen 330 has been cleaned to a certain extent, and the overall weight of the filter piece 300 is reduced, so that the filter piece 300 can move upward a certain distance under the action of the elastic piece 400, so that the filter screen 330 does not contact the high-speed rotating inner cylinder 100 in the dehydration state. At the same time, the water flow or airflow caused by the rotating inner cylinder 100 in the dehydration state can further clean the remaining lint on the filter screen 330.

[0083] In the above scheme, by arranging the elastic piece 400, the filter screen 330 can be separated from the inner cylinder 100 in the drying process, so as to achieve an effective filtering effect. At the same time, the elastic piece 400 can also play a certain buffering role when the filter piece 300 falls, so as to avoid the bottom end of the filter piece 300 directly impacting the inner cylinder 100.

[0084] Further, the filter 300 comprises an air outlet cylinder 320 coaxially arranged with the mounting cylinder 210, and a filter screen 330 arranged at the bottom end of the air outlet cylinder 320. The outer peripheral wall of the air outlet cylinder 320 is arranged in a spaced manner with the inner peripheral wall of the mounting cylinder 210, which on one hand can avoid a large area contact between the filter 300 and the mounting cylinder 210, and facilitate the up-and-down movement of the filter 300. On the other hand, the elastic member 400 can be arranged in the space between the air outlet cylinder 320 and the mounting cylinder 210, and avoid occupying other installation space.

[0085] As a specific structure, the upper region of the outer peripheral wall of the air outlet cylinder 320 is provided with a protruding structure, and the inner peripheral wall of the mounting cylinder 210 is provided with a stop surface arranged in a spaced manner below the protruding structure. For example, the stop surface can be formed by a sudden change of the inner diameter of the mounting cylinder 210 at a certain height.

[0086] The elastic member 400 is a compression spring arranged between the protruding structure and the stop surface, and the upper end of the elastic member 400 is fixed to or abuts against the protruding structure, and the lower end of the elastic member 400 abuts against the stop surface. Preferably, the upper end of the elastic member 400 is fixed to the lower side of the protruding structure, so that the filter 300 and the elastic member 400 can be installed as a whole into the mounting cylinder 210, and the assembly efficiency is improved. In addition, the relative position between the elastic member 400 and the filter 300 is fixed, and when the filter 300 moves up and down, the friction between the air outlet cylinder 320 and the elastic member 400 can be prevented to a certain extent.

[0087] In a further solution, the bottom end of the air outlet cylinder 320 is provided with a sealing portion 331 surrounding the outer periphery of the filter screen 330, and the sealing portion 331 extends outward from the outer periphery of the filter screen 330, and the area surrounded by the outer edge of the sealing portion 331 can cover at least the bottom end opening of the mounting cylinder 210.

[0088] In this way, in the drying state, the filter 300 moves up in the mounting cylinder 210, and the sealing portion 331 rises with the filter 300, and can be in sealing abutment with the inner peripheral wall of the outer cylinder 200 at the bottom end opening, and completely seal the gap between the air outlet cylinder 320 and the mounting cylinder 210. In this way, it can be ensured that the humid hot air passes through the filter screen 330 and flows outwards, and the filtering effect is ensured.

[0089] On the other hand, the sealing portion 331 can serve as a limiting structure for limiting the maximum upward movement height of the filter 300 in the drying state. In the drying state, after the sealing portion 331 contacts the inner peripheral wall of the outer cylinder 200 after rising with the filter 300, the filter 300 can be prevented from continuing to move up by the limiting cooperation between the sealing portion 331 and the peripheral wall of the outer cylinder 200.

[0090] In a specific embodiment, the sealing portion 331 is made of a flexible material such as rubber or silicone, and can provide better sealing effect through its own deformation.

[0091] In a preferred structure, the sealing part 331 extends outwardly from the outer periphery of the filter screen 330 and is bent upwardly at a region close to the extending end, forming a bowl-like structure. When the fan is started to draw air along the mounting cylinder 210, the sealing part 331 rises with the filter element 300 and can be buckled to the outer periphery of the bottom end opening of the mounting cylinder 210, further enhancing the sealing effect.

[0092] As a preferred solution, the filter screen 330 is in a circular arc surface structure, and the axis of the circular arc surface structure is parallel to or coincides with the axis of the outer cylinder 200. Since the filter screen 330 moves up and down with the filter element 300, the axis of the circular arc surface structure also moves up and down within a certain range, but always remains parallel to the axis of the outer cylinder 200 and can coincide with the axis of the outer cylinder 200 at a certain height.

[0093] The radius of curvature of the circular arc surface structure is greater than or equal to the radius of the outer peripheral wall of the inner cylinder 100 and less than or equal to the radius of the inner peripheral wall of the outer cylinder 200, which can ensure that the filter screen 330 has good adhesion to the outer peripheral wall of the inner cylinder 100 and the inner peripheral wall of the outer cylinder 200. On the one hand, the filter screen 330 has a close radius of curvature with the peripheral wall of the outer cylinder 200, which is conducive to providing a good sealing effect by the sealing part 331 during the drying process. On the other hand, in the washing state, the filter screen 330 has a suitable adhesion to the outer peripheral wall of the inner cylinder 100, which can make the area of the filter screen 330 contacting the inner cylinder 100 as large as possible, and more effectively clean the lint hanging on the filter screen 330.

[0094] Further, the present embodiment is provided with a sealing cooperation groove 220 on the inner peripheral wall of the outer cylinder 200, which surrounds the bottom end opening of the mounting cylinder 210. In the drying state, when air is drawn along the mounting cylinder 210, the sealing part 331 rises with the filter element 300 and enters the sealing cooperation groove 220, thereby sealing the bottom end opening of the mounting cylinder 210.

[0095] As a specific embodiment, the covering area of the sealing cooperation groove 220 on the inner peripheral wall of the outer cylinder 200 is greater than the projection area of the whole composed of the filter screen 330 and the sealing part 331 on the inner peripheral wall of the outer cylinder 200 in the vertical upward direction. After the sealing part 331 rises with the filter element 300, it is sealed with the groove bottom wall of the sealing cooperation groove 220.

[0096] In a further solution of the present embodiment, the inner peripheral wall of the mounting cylinder 210 is provided with a guide groove 211 extending in the axial direction thereof, and the air outlet cylinder 320 has a cooperation protrusion 311 protruding from the outer peripheral wall thereof, which is slidably limited in the guide groove 211 in the axial direction of the mounting cylinder 210.

[0097] Further, a plurality of guide grooves 211 are arranged along the circumference of the mounting cylinder 210, and a plurality of matching protrusions 311 are arranged on the air outlet cylinder 320 in one-to-one correspondence with the plurality of guide grooves 211. Preferably, the guide grooves 211 are uniformly distributed along the circumference of the air outlet cylinder 320.

[0098] In the above scheme, the limiting relationship between the guide grooves 211 and the matching protrusions 311 does not affect the up-and-down movement of the filter element 300 along the mounting cylinder 210, while limiting the air outlet cylinder 320 from rotating within the mounting cylinder 210. In particular, when the mounting cylinder 210 is arranged to be offset from the axis of the outer cylinder 200 in the horizontal direction by a certain distance, the filter screen 330 at the bottom end of the air outlet cylinder 320 has a structure in which the heights of the left and right sides are inconsistent. Once the filter element 300 rotates, it will cause interference between the filter screen 330 and the inner cylinder 100, thereby causing damage.

[0099] As a specific structure, the top end of the air outlet cylinder 320 is provided with a flange plate 310 extending outwardly in the circumferential direction, and the matching protrusion 311 is arranged at the outer periphery of the flange plate 310, protruding from the outer peripheral edge of the flange plate 310.

[0100] In a further scheme, the elastic member 400 is arranged in the guide groove 211, and the upper end thereof is in abutment or fixed with the matching protrusion 311, and the lower end thereof is in abutment at the bottom end of the guide groove 211.

[0101] Specifically, in the present embodiment, the matching protrusion 311 serves as a protruding structure fixed with the upper end of the elastic member 400, and the guide groove 211 extends downward from the top end of the mounting cylinder 210 to a certain height from the bottom end, thereby forming a stop surface at the bottom end of the guide groove 211 for abutment with the lower end of the elastic member 400.

[0102] With the above structure, the elastic member 400 can be limited in the guide groove 211, preventing the lower end of the elastic member 400 from slipping off or bending from the stop surface when the elastic member 400 is under pressure.

[0103] In a specific scheme of the present embodiment, the upper end of each elastic member 400 is fixedly connected to the lower side of the matching protrusion 311 in one-to-one correspondence, and then the filter element 300 and the elastic member 400 are installed together into the mounting cylinder 210.

[0104] In a specific structure, the elastic member 400 can be located directly below the matching protrusion 311, that is, the upward projection area of the elastic member 400 is completely located at the outer periphery of the flange plate 310, so as to ensure that the elastic member 400 is arranged in spaced relation with the outer peripheral wall of the air outlet cylinder 320, preventing friction.

[0105] In another specific structure, the upper end of the elastic member 400 contacts the lower surface of the flange plate 310, and the fixing area is larger and the installation is more secure. However, similarly, a gap is left between the elastic member 400 and the outer peripheral wall of the air outlet cylinder 320 to prevent friction between the air outlet cylinder 320 and the elastic member 400.

[0106] More specifically, when assembled, the whole composed of the filter member 300 and the elastic member 400 is inserted into the mounting cylinder 210 from top to bottom, the top end of the guide groove 211 is flush with the top end surface of the mounting cylinder 210, and it is ensured that the fitting convex part 311 can enter the guide groove 211 from the top end. The sealing part 331 is made of a flexible material and can smoothly pass through the area inside the mounting cylinder 210 below the guide groove 211 by deforming. When the filter screen 330 and the sealing part 331 completely extend out of the bottom end of the mounting cylinder 210, the filter member 300 can be released. At this time, the lower end of the elastic member 400 abuts against the bottom end of the guide groove 211, and the filter member 300 is stably supported by the elastic member 400 at a certain height in the mounting cylinder 210.

[0107] In this embodiment, by reasonably designing the elastic coefficient of the elastic member 400 and the mass of the filter member 300, when there is no wire dust adhered to the filter screen 330, the height position of the filter member 300 hardly decreases or only decreases slightly compared with the drying state. In this way, in the drying state, the negative pressure generated at the top end of the mounting cylinder 210 by the fan suction is sufficient to drive the filter member 300 to move upward, so that the sealing part 331 realizes sealing at the bottom end of the mounting cylinder 210, and it is ensured that all the airflow passes through the filter screen 330 and then enters the fan, the drying air duct and other positions. At the same time, when there is wire dust adhered to the filter screen 330, the increased weight is sufficient to overcome the elastic force of the elastic member 400, drive the filter member 300 to move downward to a certain extent, and realize the self-cleaning effect of the filter screen 330 by the rotation of the inner cylinder 100. In addition, based on the Bernoulli principle, a negative pressure is generated near the high-speed moving fluid. In the dehydration state, when the inner cylinder 100 rotates at a high speed, it will drive the nearby gas to flow at a high speed, so that a negative pressure will be generated near the outer periphery of the inner cylinder 100, which can also reversely attract the filter member 300 to move downward.

[0108] In a further scheme of this embodiment, the air outlet cylinder 320 is provided with a water-permeable part 321 through which water flow or air flow can pass. The water-permeable part 321 extends upward from the lowest position connected with the filter screen 330 of the air outlet cylinder 320 to a certain height. After wire dust is adhered to the filter screen 330, the filter member 300 moves downward relative to the mounting cylinder 210, so that the water-permeable part 321 extends out of the bottom end of the mounting cylinder 210.

[0109] Specifically, the water-permeable part 321 has a plurality of through hole structures in the covered area, and water flow or air flow can pass through the through hole structures to flow on both sides of the air outlet cylinder 320. The aperture of the through hole structure is larger than the aperture of the filter hole 332 on the filter screen 330.

[0110] More specifically, the water-permeable part 321 is a water-permeable grid with a plurality of through-hole structures, and the coverage area of the water-permeable grid is from the lowest part of the air outlet cylinder 320 to a certain height.

[0111] In one specific structure, a plurality of through-holes can be directly formed in the corresponding area of the peripheral wall of the air outlet cylinder 320 to form a water-permeable grid. In another specific structure, a space for installing the water-permeable part 321 is reserved in the lower part of the air outlet cylinder 320, and a water-permeable grid is installed in the space, and the mesh aperture of the water-permeable grid is larger than the aperture of the filter hole 332.

[0112] As a specific embodiment, the mounting cylinder 210 is formed by vertically extending the peripheral wall of the outer cylinder 200, and the axis of the mounting cylinder 210 is horizontally offset from the axis of the outer cylinder 200 by a certain distance. In this way, the bottom end of the mounting cylinder 210 has a height variation along the circumference of the outer cylinder 200, and the structure of the air outlet cylinder 320 matches that of the mounting cylinder 210, so that the bottom end of the air outlet cylinder 320 also has a structure with inconsistent heights on both sides.

[0113] The water-permeable part 321 is arranged on the side of the air outlet cylinder 320 away from the axis of the outer cylinder 200 in the horizontal direction, i.e., on the side of the bottom end of the air outlet cylinder 320 with a lower height. Moreover, the rotation direction of the inner cylinder 100 in the dewatering state is from the side where the water-permeable part 321 is located to the other side, i.e., the inner cylinder 100 rotates from the side where the water-permeable part 321 is located to the side directly below the air outlet cylinder 320. For example, in the case of Figure 3 , the water-permeable part 321 is located on the right side of the air outlet cylinder 320, and the inner cylinder 100 rotates counterclockwise in the dewatering state.

[0114] With the above structure, when the filter 300 has a small downward displacement in the washing state, the lint on the lower side of the filter screen 330 cannot directly contact the peripheral wall of the inner cylinder 100, and the washing water flow brought up from the bottom by the rotation of the inner cylinder 100 can flow into the air outlet cylinder 320 through the water-permeable part 321 at the lowest part of the air outlet cylinder 320, and impact and adhere to the lint on the outer side of the filter screen 330 from the inside to the outside.

[0115] Most of the lint has been cleaned in the washing state, and the falling range of the filter 300 in the spin-drying state is smaller than that in the washing state, so that the filter screen 330 does not directly contact the inner drum 100 rotating at high speed, and the resistance of the rotation of the inner drum 100 is small, and the noise is small. In the initial stage of the spin-drying state, the water flow splashed out of the laundry in the inner drum 100 can flow into the air outlet drum 320 from the lowest part of the water-permeable part 321, and the filter screen 330 is back-flushed from the inside to the outside to remove the residual lint adhered to the outside of the filter screen 330. In addition, the airflow driven by the high-speed rotation of the inner drum 100 in the spin-drying state can also enter the air outlet drum 320 from the water-permeable part 321, and impact the filter screen 330 from the inside to the outside. Especially in the middle or late stage of the spin-drying state, when the inner drum 100 hardly splashes water outward, the above-mentioned airflow impact can further remove the residual lint.

[0116] In combination Figure 3 As shown in the figure, in the initial stage of the spin-drying state, each drop of water splashed out of the water hole in the circumferential wall of the inner drum 100 moves along the tangent direction of the circumferential wall of the inner drum 100 shown by the arrow in the figure. By arranging the water-permeable part 321 at the lowest part of the air outlet drum 320 and matching the specific rotation direction of the inner drum 100 in the spin-drying state, the splashed water can enter the air outlet drum 320 through the water-permeable part 321 when the filter 300 falls and the water-permeable part 321 is lower than the bottom end of the mounting drum 210, so as to achieve the purpose of back-flushing and cleaning the filter screen 330 from the inside to the outside.

[0117] In addition, the water-permeable part 321 is connected with the filter screen 330 at an angle less than 90°, and the airflow or water flow entering the air outlet drum 320 through the water-permeable part 321 is more likely to directly impact the filter screen 330, and the force of back-flushing and removing the lint is greater.

[0118] As a specific embodiment, when the filter 300 falls to the position where the filter screen 330 contacts the circumferential wall of the inner drum 100, the highest part of the water-permeable part 321 is not higher than the lowest part of the mounting drum 210.

[0119] Since the airflow and the water flow can only enter the air outlet drum 320 from the area where the water-permeable part 321 is lower than the bottom end of the mounting drum 210, if the water-permeable part 321 still has an area higher than the bottom end of the mounting drum 210 when the filter 300 falls to the lowest position, this part of the area actually cannot play a role. Moreover, if the air-permeable area of the bottom of the air outlet drum 320 is too large, it may also cause the problem that the filter 300 cannot move upward when air is drawn along the mounting drum 210 in the drying state, and further affect the filtering efficiency in the drying state.

[0120] In the preferred scheme of the embodiment, in combination Figure 5As shown, the arrows indicate the direction of the drying airflow, and the filter holes 332 on the filter screen 330 are designed with a gradually increasing aperture along the direction of the drying airflow. This structure makes it easier for lint clogging the filter holes 332 to fall off and for the lint to be rinsed clean from the inside.

[0121] The working process of the washing and drying all-in-one garment appliance provided in this embodiment is as follows.

[0122] When the washer-dryer is in drying mode, the fan draws in the humid and hot air from the outer drum 200 through the mounting cylinder 210, creating a negative pressure at the top of the mounting cylinder 210. Combined with the elastic force of the elastic element 400, this creates a vacuum. Figure 2 As shown, the filter element 300 moves upward as a whole, causing the sealing part 331 to fit into the sealing groove 220 to achieve a sealing effect. At this time, all the drying airflow passes through the filter screen 330 and exits the outer cylinder 200. The lint is intercepted by the filter screen 330 and adheres to the outside of the filter screen 330, ensuring a good filtration effect. After drying, the fan stops, and the filter screen 330 with the lint adhering to it becomes heavier. The filter element 300 moves down a certain height and compresses the elastic element 400.

[0123] After the washer-dryer restarts its garment processing program, during the washing phase, the lint on the filter screen 330 becomes heavier with water, causing the filter element 300 to descend more rapidly. If a large amount of lint adhered previously, and the descent of the filter element 300 is significant enough, the inner drum 100, during its slow rotation in the washing phase, will come into contact with the lint on the underside of the filter screen 330, thus scraping it off with the rotation of the inner drum 100, achieving self-cleaning of the filter screen 330. During the spin-drying phase, most of the lint on the filter screen 330 has been removed, and the filter element 300 has moved upwards compared to the washing phase. At this point, the water flow or airflow generated by the high-speed rotation of the inner drum 100 can enter the air outlet duct 320 through the permeable section 321, impacting the filter screen 330 from the inside out, further removing any remaining lint.

[0124] like Figure 3 As shown, if the descent of the filter element 300 in the washing state is too small, and the filter screen 330 fails to reach the height that can contact the circumferential wall of the inner cylinder 100, the amount of lint removed in the washing state is limited. However, in the dehydration state, the water flow thrown out by the high-speed rotation of the inner cylinder 100, as well as the air flow driven by it, can enter the air outlet duct 320 through the water permeable part 321, and then impact the filter screen 330 from the inside out, removing the lint on the filter screen 330.

[0125] In addition, in the drying state, in order to accelerate the condensation of the hot and humid air, and let it release water, normal temperature tap water is intermittently or continuously injected from the top of the installation cylinder 210 and the air outlet cylinder 320. This part of water will also backflush the lint from the inside to the outside of the filter screen 330, preventing the lint from adhering to the filter screen 330 in large quantities, and thus preventing the blockage from occurring during this drying process. At the same time, it can also prevent the lint from adhering to the lower side of the filter screen 330 too much or too firmly, so that the lint can be more easily cleaned in the next laundry process, and the self-cleaning efficiency is higher.

[0126] In this embodiment, by providing the filter member 300 that can move up and down, in the drying state, the filter member 300 moves up to seal the gap around the filter screen 330 through the sealing part 331, to ensure the filtering effect. After the drying is completed, the lint adhered to the filter screen 330 drives the filter member 300 to move down, and at most can move to the contact between the filter screen 330 and the circumferential wall of the inner cylinder 100. When the laundry treatment program is run again, in the washing state, the lint adhered to the filter screen 330 can be scraped off by the rotation of the inner cylinder 100, or in the dehydration state, the lint can be removed by the backflushing through the water-permeable part 321 by the airflow or water flow, to realize the self-cleaning effect of the filter screen 330, and ensure the filtering effect in the subsequent drying state.

[0127] Embodiment Two

[0128] The difference between this embodiment and the above-mentioned embodiment one is that the elastic member is a compression spring sleeved on the air outlet cylinder.

[0129] Specifically, in this embodiment, the outer circumferential wall of the air outlet cylinder is provided with a protruding structure in the upper region, the elastic member is sleeved on the air outlet cylinder in the region below the protruding structure, and the upper end is abutted or fixed with the protruding structure. The lower end of the elastic member is abutted with the stop surface on the inner circumferential wall of the installation cylinder.

[0130] As a specific implementation, the top of the air outlet cylinder is provided with a flange plate extending outwardly, and the upper end of the elastic member is fixed on the lower side of the flange plate. Preferably, the inner circumference of the elastic member is spaced apart from the outer circumferential wall of the air outlet cylinder to prevent friction between the air outlet cylinder and the elastic member when the air outlet cylinder moves up and down.

[0131] The installation cylinder sequentially includes a first installation section and a second installation section from the top downward, wherein the inner diameter of the first installation section is greater than the inner diameter of the second installation section, and the stop surface is formed at the joint of the two sections and abuts with the lower end of the elastic member.

[0132] More specifically, the outer diameter of the air outlet cylinder is smaller than the inner diameter of the second installation section, so that the outer circumferential wall of the air outlet cylinder does not contact with the inner circumferential wall of the second installation section, and the filter member can move up and down conveniently.

[0133] Further, the air outlet cylinder and the mounting cylinder in the embodiment are also limited by the limiting cooperation of the guide groove and the matching convex part, so as to limit the rotation of the air outlet cylinder.

[0134] As a specific structure, the guide groove is arranged on the inner circumferential wall of the first mounting section and extends downward along the axis of the mounting cylinder from the top end of the first mounting section. The guide groove can extend downward to be flush with the bottom end of the first mounting section, or the bottom end of the guide groove can be arranged to be slightly higher than the bottom end of the first mounting section, as long as enough space is reserved for the upward and downward movement of the filter element.

[0135] More specifically, the matching convex part is arranged at the outer periphery of the flange plate and protrudes from the outer peripheral edge of the flange plate, so as to be limited in the guide groove for upward and downward movement and not to affect the assembly relationship between the elastic element and the flange plate.

[0136] In the embodiment, the assembly relationship between the elastic element and the air outlet cylinder of the filter element is changed, and the purpose of supporting the filter element at a certain height in the mounting cylinder by the elastic element can also be achieved. Furthermore, in the drying state, the filter element moves upward to seal the lower end of the mounting cylinder, so as to ensure the filtering effect, and in the washing state, the filter element moves downward, so as to scrape off the lint on the filter screen by the rotation of the inner cylinder, or in the dehydration state, the lint is removed by the air flow or water flow entering the air outlet cylinder through the water-permeable part, so as to realize the self-cleaning of the filter screen.

[0137] The above is only the preferred embodiment of the present application, and does not limit the present application in any form. Although the present application has been disclosed as above, it is not intended to limit the present application. Any person skilled in the art can make some changes or modifications to the above-mentioned technical content without departing from the technical solution of the present application, and any simple modification, equivalent change and modification of the above-mentioned embodiment based on the technical essence of the present application are still within the scope of the present application.

Claims

1. A drum assembly for a combined washer-dryer, characterized in that, have: The mounting cylinder (210) extends upward from the upper part of the peripheral wall of the outer cylinder (200); as well as A filter element (300) with a filter screen (330) at the bottom is movably disposed in the mounting cylinder (210); The filter screen (330) moves within the periphery of the outer cylinder (200), the periphery of the inner cylinder (100), and the space between them.

2. The drum assembly of the washing and drying integrated garment equipment according to claim 1, characterized in that, In the washing and / or dehydration state, the filter screen (330) is located between the peripheral wall of the outer cylinder (200) and the peripheral wall of the inner cylinder (100), or in contact with the peripheral wall of the inner cylinder (100); In the drying state, the filter screen (330) is engaged with the bottom opening of the mounting cylinder (210) on the peripheral wall of the outer cylinder (200); Preferably, the filter screen (330) has an arc surface structure, and the axis of the arc surface structure is parallel to or coincides with the axis of the outer cylinder (200); the radius of curvature of the arc surface structure is greater than or equal to the radius of the outer peripheral wall of the inner cylinder (100), and less than or equal to the radius of the inner peripheral wall of the outer cylinder (200).

3. The drum assembly of the washing and drying integrated garment equipment according to claim 2, characterized in that, The cylinder assembly is provided with an elastic element (400), which applies an upward elastic force to the filter element (300) to keep the filter screen (330) separated from the peripheral wall of the inner cylinder (100) in the drying state; Preferably, the filter element (300) is disposed on the elastic element (400); In the washing and / or dehydration state, the filter element (300) moves downward within the mounting cylinder (210) to compress the elastic element (400); In the drying state, the filter element (300) moves upward within the mounting cylinder (210) to release the elastic element (400).

4. The drum assembly of the washing and drying integrated garment equipment according to claim 3, characterized in that, The filter element (300) has an air outlet duct (320) coaxially arranged with the mounting cylinder (210), and the filter screen (330) is arranged at the bottom end of the air outlet duct (320); the outer peripheral wall of the air outlet duct (320) and the inner peripheral wall of the mounting cylinder (210) are spaced apart. Preferably, the elastic element (400) is disposed in the gap between the outer peripheral wall of the air outlet duct (320) and the inner peripheral wall of the mounting cylinder (210).

5. The drum assembly of the washing and drying integrated garment equipment according to claim 4, characterized in that, The mounting cylinder (210) has a guide groove (211) extending along its axial direction on its inner peripheral wall, and the air outlet cylinder (320) has a mating protrusion (311) protruding from its outer peripheral wall. The mating protrusion (311) is slidably disposed in the guide groove (211); Preferably, the top of the air outlet duct (320) is provided with a flange (310) extending outward, and the mating protrusion (311) protrudes from the outer periphery of the flange (310).

6. The drum assembly of the washing and drying integrated garment appliance according to claim 5, characterized in that, The elastic element (400) is disposed in the guide groove (211); the upper end of the elastic element (400) abuts or is fixed to the mating protrusion (311), and the lower end of the elastic element (400) abuts against the bottom end of the guide groove (211).

7. The drum assembly of the washer-dryer combo according to any one of claims 4-6, characterized in that, The bottom end of the air outlet (320) is provided with a sealing part (331) surrounding the outer periphery of the filter screen (330); In the drying state, the filter element (300) moves upward inside the mounting cylinder (210), and the sealing part (331) is sealed to the inner circumferential wall of the outer cylinder (200) on the outer periphery of the bottom opening of the mounting cylinder (210); Preferably, the sealing part (331) is made of a flexible material; More preferably, the sealing portion (331) extends outward from the outer periphery of the filter screen (330), and the area near the end of the extension bends upward.

8. The drum assembly of the washing and drying integrated equipment according to claim 7, characterized in that, The inner peripheral wall of the outer cylinder (200) is provided with a sealing groove (220) surrounding the bottom opening of the mounting cylinder (210); In the drying state, the sealing part (331) moves upward with the filter element (300) into the sealing groove (220); Preferably, in the dried state, the sealing part (331) is in contact with the bottom wall of the sealing groove (220) for sealing and sealing.

9. The drum assembly of the washer-dryer combo according to any one of claims 4-6, characterized in that, The air outlet duct (320) is provided with a water-permeable part (321), which extends upward from the lowest point where the air outlet duct (320) connects to the filter screen (330) to a certain height; Preferably, the mounting cylinder (210) extends vertically upward, and the axis of the mounting cylinder (210) is offset by a certain distance in the horizontal direction relative to the axis of the outer cylinder (200); The permeable part (321) is located on the side of the air outlet (320) away from the axis of the outer cylinder (200) in the horizontal direction; the rotation direction of the inner cylinder (100) in the dehydration state is from the side where the permeable part (321) is located to the other side; Preferably, the aperture of the filter holes (332) on the filter screen (330) gradually increases along the flow direction of the drying airflow.

10. A washing and drying appliance for clothes, characterized in that, The washing and drying unit has a drum assembly as described in any one of claims 1-9.

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