WO2024050968A1

WO2024050968A1 - Filtering device and dishwasher

Info

Publication number: WO2024050968A1
Application number: PCT/CN2022/132376
Authority: WO
Inventors: 杜光辉; 熊秋亮; 王琨瑶; 陈盈杰; 叶明才; 李翔
Original assignee: 芜湖美的智能厨电制造有限公司
Priority date: 2022-09-05
Filing date: 2022-11-16
Publication date: 2024-03-14

Abstract

Provided are a filtering device (100) and a dishwasher. The filtering device (100) comprises: a water cup assembly (1) internally provided with an accommodating cavity (10); a first filter mesh (2) arranged in the accommodating cavity (10), a cavity (21) being formed inside the first filter mesh (2), the cavity (21) communicating with the exterior of the accommodating cavity (10), liquid flowing into the cavity (21) being guided to a position between the first filter mesh (2) and the water cup assembly (1), and solids being left in the cavity (21); and a cleaning assembly (3) movably arranged in the cavity (21), at least part of the cleaning assembly (3) being in contact with the inner surface of the first filter mesh (2).

Description

A filter device and a dishwasher

Cross-references to related applications

This application claims the priority of the Chinese patent application CN202222386671.9 titled "A filter device and a dishwasher" submitted by Wuhu Midea Intelligent Kitchen Appliances Manufacturing Co., Ltd. on September 5, 2022, and on September 5, 2022 The priority of the Chinese patent application CN202211078562.9, titled "A filter device and a dishwasher" submitted on May 5, is incorporated into this article by reference.

Technical field

The present invention relates to the technical field of household appliances, and in particular to a filtering device and a dishwasher.

Background technique

The dishwasher is equipped with a filter device to filter the water used in the dishwasher. The filtered water can be recycled again to reduce the water consumption and energy of the dishwasher. Residues in the relevant filtering devices can easily clog the filtering devices. Users need to clean the filtering devices regularly, which is cumbersome to operate.

Contents of the invention

The present invention aims to solve one of the technical problems in the related art, at least to a certain extent.

To this end, the present invention proposes a filtering device to solve the technical problem of how to improve user convenience.

The invention also provides a dishwasher, which includes the above filtering device.

The filtering device according to the present invention includes: a water cup assembly, with an accommodation cavity provided inside; a first filter screen, arranged in the accommodation cavity, a cavity provided inside the first filter screen, and the cavity communicates with the accommodate the outside of the cavity, guide the liquid flowing into the cavity to between the first filter screen and the water cup assembly, and retain solids in the cavity; a cleaning component is movably provided Within the cavity, the cleaning component is at least partially in contact with the inner surface of the first filter.

Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.

Description of the drawings

Figure 1 is a partial structural schematic diagram of a dishwasher according to an embodiment of the present invention;

Figure 2 is an exploded view of the filter device according to the embodiment of the present invention;

Figure 3 is a cross-sectional view of the filter device according to the embodiment of the present invention;

Figure 4 is a perspective view of the cleaning assembly according to the embodiment of the present invention;

Figure 5 is a top view of the cleaning assembly according to the embodiment of the present invention;

Figure 6 is a schematic diagram of the connection between the first filter screen and the cleaning assembly according to the embodiment of the present invention.

Detailed ways

Embodiments of the present invention provide a filtering device, which can be used in washing equipment such as dishwashers and fruit and vegetable cleaning machines. It should be noted that the application scenario type of the embodiment of the present invention does not limit the structure of the filtering device of the embodiment of the present invention.

The following takes the application of a filter device in a dishwasher as an example. The dishwasher is used to rinse the stains on the surface of the dishes to achieve the washing effect. After the clean water rinses the dishes in the dishwasher, it becomes stained. The filtering device installed in the dishwasher is used to filter the wastewater from food residues and obtain clean circulating water for re-circulation, thus achieving the effect of saving water consumption of the dishwasher. As shown in FIGS. 1 to 3 , the filter device 100 provided by the embodiment of the present invention includes a water cup assembly 1 , a first filter screen 2 and a cleaning assembly 3 . The water cup assembly 1 is provided with an accommodating cavity 10 inside, and the accommodating cavity 10 can be used to store water and other components. The first filter 2 in the embodiment of the present invention is disposed in the accommodation cavity 10. The first filter 2 can be fixed relative to the water cup assembly 1, and the first filter 2 can be disposed in a cylindrical filter structure. The first filter screen 2 is provided with a cavity 20 inside, and the cavity 20 is connected to the outside of the accommodating cavity 10. When the filter device 100 is used in a dishwasher, the outside of the accommodating cavity 10 can represent the washing process of the dishwasher. That is to say, the sewage with residue after washing the bowls in the washing cavity can be introduced into the cavity 20 of the first filter screen 2 . The first filter screen 2 can be configured as a mesh structure, and the mesh size of the first filter screen 2 is smaller. The first filter screen 2 can conduct the liquid in the cavity 20 to the outside of the first filter screen 2, When the first filter screen 2 is disposed in the accommodation cavity 10 of the water cup assembly 1 , the first filter screen 2 can guide the liquid in the cavity 20 to the accommodation cavity 10 between the first filter screen 2 and the water cup assembly 1 Inside. Due to the large size, the solid residue in the cavity 20 is blocked by the first filter screen 2 in the cavity 20 and cannot reach between the first filter screen 2 and the water cup assembly 1 . Therefore, the first filter screen 2 in the embodiment of the present invention is used to guide the liquid flowing to the cavity 20 to between the first filter screen 2 and the water cup assembly 1, and retain the solids in the cavity 20, thereby causing To filter the sewage inside the dishwasher. The liquid flowing between the first filter 2 and the water cup assembly 1 can be circulated to the dishwasher again for rinsing the dishes, thereby achieving the recycling effect, which is beneficial to saving the water consumption of the dishwasher for cleaning the dishes, and Save energy.

During the filtration process of the first filter screen 2, the liquid flows from the cavity 20 inside the first filter screen 2 to between the outside of the first filter screen 2 and the water cup assembly 1, and the solids are retained in the cavity 20, and part of the solids are left in the cavity 20. The liquid will be adsorbed on the surface of the first filter 2 due to the flow of the liquid. The cleaning component 3 in the embodiment of the present invention is movably disposed in the cavity 20. It should be noted that the connection relationship between the cleaning component 3 and the first filter 2 or the water cup component 1 is not limited in the embodiment of the present invention. As long as the cleaning component 3 can move relative to the cavity 20 in the first filter 2 . The cleaning component 3 is at least partially in contact with the inner surface 21 of the first filter screen 2 . The cleaning component 3 and the first filter 2 shown in contact are at least partially attached to each other. When the cleaning component 3 moves relative to the cavity 20, the part of the cleaning component 3 that is in contact with the first filter 2 can be relative to the first filter. The mesh 2 generates contact friction, and the friction force generated between the cleaning component 3 and the first filter mesh 2 can take away the solid residue adsorbed on the surface of the first filter mesh 2 , thereby cleaning the first filter mesh 2 .

It should be noted that the embodiments of the present invention do not limit the manner in which the cleaning component moves relative to the cavity. For example, the cleaning component can translate relative to the cavity, the cleaning component can also rotate relative to the cavity, or the cleaning component can translate and rotate relative to the cavity. Rotation, no matter what kind of movement is used, as long as the cleaning component can move relative to the cavity to achieve relative friction between the cleaning component and the inner surface of the first filter.

An embodiment of the present invention provides a filtering device, which includes a water cup assembly, a first filter screen and a cleaning assembly. The water cup assembly is provided with an accommodation cavity inside, and the first filter screen is arranged in the accommodation cavity. The first filter screen is provided with a cavity inside, and the cavity is connected to the outside of the accommodation cavity, and the fluid flowing into the cavity is directed to the first filter. between the net and the water cup assembly, and the solids flow into the cavity, the cleaning assembly is movably disposed in the cavity, and the cleaning assembly is at least partially in contact with the inner surface of the first filter screen. In the embodiment of the present invention, a cleaning component is provided in the first filter screen. The cleaning component is at least partially in contact with the inner surface of the first filter screen, and the cleaning component is movable relative to the cavity. During the movement of the cleaning component, the cleaning component is in contact with the third filter screen. The contact part of the first filter screen will move relative to the first filter screen and generate relative friction. The friction force will cause the solid residue adsorbed on the inner surface of the first filter screen to fall off, thereby cleaning the first filter screen. Users do not need to clean the filter device regularly, which reduces the steps for users to disassemble and assemble parts for cleaning, thereby reducing the user's cleaning burden and extending the service life of the filter device.

In some embodiments, as shown in conjunction with FIGS. 3 and 4 , the cleaning assembly 3 includes a connecting rod 31 and a cleaning arm 32 . The connecting rod 31 extends along a vertical direction, which represents the up and down direction of the filter device in normal use, and is also the vertical direction in the absolute coordinate system. The connecting rod 31 in the embodiment of the present invention is arranged in the cavity 20, and the connecting rod 31 extends in the vertical direction. The connecting rod 31 can rotate in the vertical direction relative to the cavity 20. The embodiment of the present invention is not limited to the connecting rod. 31 is connected to the first filter 2 or the water cup assembly 1 as long as the connecting rod 31 can rotate relative to the cavity in the first filter 2 . A water inlet channel 310 is provided in the connecting rod 31 . The water inlet channel 310 is used to introduce water flow. For example, the water inlet channel 310 introduces external clean water flow or filtered water flow into the connecting rod 31 .

As shown in Figures 3 and 4, the cleaning arm 32 is connected to one side of the connecting rod 31 in the circumferential direction, where the extension direction of the connecting rod 31 represents the length direction of the connecting rod 31. The connecting rod in the embodiment of the present invention The length direction of 31 is in the vertical direction, and the circumferential direction of the connecting rod 31 represents the direction around the length direction of the connecting rod 31 , that is to say, the circumferential direction of the connecting rod 31 represents the direction around the vertical direction. It should be noted that the vertical direction is not limited to the direction of a certain straight line, but can be the direction of a set of parallel lines. For example, the vertical direction is the up-and-down direction, and it is not limited to the direction of a certain line extending up and down. straight direction. The cleaning arm 32 is connected to the circumferential side wall of the connecting rod 31 . It can be understood that the cleaning arm 32 extends along the radial direction of the connecting rod 31 . In the embodiment of the present invention, a shunt channel 320 is provided inside the cleaning arm 32. The shunt channel 320 is connected with the water inlet channel 310, and the water flow introduced by the water inlet channel 310 can flow into the shunt channel 320. The diverting channel 320 forms a water outlet 330 on the surface of the cleaning arm 32 , and the water outlet 330 faces the inner surface 21 of the first filter screen 2 . After the water flow introduced from the water inlet channel 310 enters the diverting channel 320, it can be sprayed out through the water outlet 330. In the embodiment of the present invention, the water outlet 330 faces the first filter screen 2, and sprays the first filter screen 2 at the water outlet 330. In this case, the water flow will generate a reaction force on the cleaning arm 32. Since the connecting rod 31 is rotatably connected to the cavity, the corresponding reaction force can drive the connecting rod to rotate relative to the cavity and spray on the first filter screen. On the one hand, the water flow can wash away the solid residue on the first filter screen. On the other hand, the water flow can drive the connecting rod to rotate and drive the cleaning arm to move relative to the first filter screen. The friction between the cleaning arm and the first filter screen can drive adsorption The solid residue on the first filter screen falls off, thereby improving the cleaning effect of the first filter screen.

The cleaning assembly in the embodiment of the present invention does not need to be equipped with an additional driving device. A water inlet channel is provided in the connecting rod, a shunt channel connected to the water inlet channel is provided in the cleaning arm, and a water outlet connected to the shunt channel is provided on the surface of the cleaning arm. , the water outlet faces the first filter, and the water flow can be sprayed from the water outlet onto the first filter. The reaction force of the water flow impact can drive the cleaning component to rotate automatically without external driving force. The continuously rotating cleaning arm and the first filter The mutual contact and friction improves the cleaning effect of the first filter, and the water flow from the water outlet can wash away the residue on the first filter, which also improves the cleaning efficiency.

In some embodiments, as shown in FIG. 4 , the cleaning arm 32 includes a first extension 321 and a second extension 322 . The first extending portion 321 extends in the radial direction. It should be noted that the radial direction represents the axial direction perpendicular to the connecting rod 31. The axial direction of the connecting rod 31 can be represented by the length direction of the connecting rod 31, that is, That is, the radial direction described in the embodiment of the present invention can be expressed as a direction that passes through the length direction of the connecting rod 31 and is perpendicular to the length direction of the connecting rod 31 . In the embodiment of the present invention, a diverting channel 320 is provided inside the first extension part 321. One end of the first extension part 321 in the radial direction is connected to the connecting rod 31. The embodiment of the present invention does not limit the radial direction of the first extension part 321. The specific way of connecting one end to the connecting rod 31 is, for example, one end of the first extension 321 in the radial direction can be welded to the connecting rod 31 , or in the embodiment shown in FIG. 4 , one end of the first extension 321 in the radial direction can be welded to the connecting rod 31 . The connecting rod 31 is snap-connected, that is to say, the first extension part 321 and the connecting rod 31 are detachably connected. The first extension part and the connecting rod 31 are as two independent parts, and they can be processed and manufactured separately, thereby reducing the cost. production difficulty and improve production efficiency.

It should be noted that no matter what connection method is used between the first extension part and the connecting rod in the embodiment of the present invention, it is sufficient as long as the water inlet channel in the connecting rod can be connected to the shunt channel in the first extension part.

As shown in Figure 4, the water outlet 330 is provided on the first extension part 321. The first extension part 321 has two opposite ends in the extension direction, wherein one end of the first extension part 321 is connected to the connecting rod 31, and the first extension part 321 has two opposite ends. The other end of the extension part 321 is away from the connecting rod 31 , and the second extension part 322 is connected to one end of the first extension part 321 away from the connecting rod 31 . The second extension part 322 extends in the vertical direction, that is to say, the size of the second extension part 322 in the vertical direction is larger than the size in the horizontal direction. As shown in FIG. 3 , the second extension part 322 is away from the second extension part 322 . One end of an extension part 321 is close to the inner surface 21 of the first filter screen 2. When the cleaning arm 32 is provided with only the first extension part 321 and the second extension part 322, the second extension part 322 is away from the first extension part 321. One end of the connecting rod 31 is in contact with the first filter screen 2. During the rotation of the connecting rod 31, the second extending part 322 rotates with the connecting rod 31, so that the second extending part 322 is away from the space between one end of the connecting rod 31 and the first filter screen 2. Friction is generated to clean the first filter 2 .

In some embodiments, as shown in FIG. 4 , a reinforcing rib 324 may be disposed in front of the first extension part 321 and the second extension part 322 , and the reinforcing rib 324 is disposed at the connection between the first extension part 321 and the second extension part 322 . The reinforcing rib 324 may be configured as an arc-shaped structure, with the concave surface of the arc facing away from the first extension part 321 and the second extension part 322 . By arranging reinforcing ribs, the embodiment of the present invention is conducive to improving the connection strength between the first extension part and the second extension part, improving the structural strength of the cleaning arm, improving the anti-deformation ability of the cleaning arm, and thereby improving the cleaning of the cleaning assembly. efficiency and longevity.

In some embodiments, as shown in FIG. 4 , the same cleaning arm 32 is provided with multiple water outlets 330 connected to the shunt channel 320 . Multiple means that the water outlets 330 can be two, three, etc., in some cases In the embodiment, two water outlets 330 are provided on the same cleaning arm 32 , and both water outlets 330 are connected to the diverting channel 320 . As shown in Figure 4, the two water outlets 330 are respectively a first water outlet 331 and a second water outlet 332. The first water outlet 331 and the second water outlet 332 are spaced apart in the radial direction. That is to say, the first water outlet 331 and the second water outlet 332 are spaced apart by a certain distance in the extension direction of the first extension part 321, rather than being arranged closely together. Moreover, the first water outlet 331 and the second water outlet 332 are located on the same side of the first extension part 321. It should be noted that the same side of the first extension part 321 means that the first extension part 321 has a circumferential direction. On the opposite sides, if the circumferential direction is the direction around the vertical direction, then the first water outlet 331 and the second water outlet 332 are both disposed on the same side of the first extension 321 in the circumferential direction. And the first water outlet 331 is closer to the second extension part 322 than the second water outlet 332. Close means that the distance between the first water outlet 331 and the second extension part 322 is smaller than the distance between the second water outlet 332 and the second extension part 322 . In some embodiments, the first water outlet 331 may be disposed on the second extension part 322 so that the first water outlet 331 is closer to the inner wall surface of the first filter screen.

In the embodiment of the present invention, the water outlet is provided as a first water outlet and a second water outlet, wherein the first water outlet is closer to the first filter screen than the second water outlet, and the first water outlet close to the first filter screen is used to flush the second water outlet. One filter screen mainly plays a cleaning role. The second water outlet away from the first filter screen is used to impact the first filter screen. The reaction force of the water flow impacting the first filter screen is used to drive the cleaning device to rotate, which mainly plays a cleaning role. Of course, the impact of the second water outlet on the first filter can also play a partial cleaning role, and the impact of the first water outlet on the first filter can also play a partial driving role. Between the first water outlet and the second water outlet With the cooperation, it is beneficial to improve the rotation efficiency of the cleaning device and further improve the cleaning effect of the cleaning device. In the embodiment of the present invention, the first water outlet and the second water outlet are also arranged on the same side of the first extension part in the circumferential direction, so that the direction of the force of the first filter element under the action of the first water outlet and the second water outlet is consistent. It is beneficial to enhance the efficiency of the reaction force to drive the cleaning device to rotate, thereby improving the cleaning efficiency.

In some embodiments, as shown in FIG. 5 , the angle θ between the extension direction of the first water outlet 331 and/or the second water outlet 332 and the extension direction of the first extension part 321 is greater than or equal to 30 degrees and less than or equal to 60 degrees. . It should be noted that the extension direction of the first water outlet 331 and the second water outlet 332 in the embodiment of the present invention represents the flow direction of the water flow derived from the first water outlet 331. The water flow flows out from the diverting channel 320 through the first water outlet 331 or the second water outlet 332. The outflowing water flow is limited by the shape and structure of the first water outlet 331 or the second water outlet 332, so that the water flow flows out according to the set angle direction. Therefore, the extension direction of the first water outlet or the second water outlet defined in the embodiment of the present invention may represent the direction of the water flow derived from the first water outlet or the direction of the water flow derived from the second water outlet. By setting the direction of the water flow from the water outlet to the radial direction at a set inclination angle, that is, water, the water flow is cleanly sprayed onto the first filter screen 2, and the direction of the water flow has a certain angle with the tangential direction of the first filter screen 2. The force generated on this basis is more conducive to driving the cleaning component to rotate in the circumferential direction relative to the first filter, which is beneficial to improving the cleaning efficiency of the cleaning component.

In some embodiments, as shown in FIG. 4 , the cleaning arm 32 further includes a brush portion 323 . The brush part 323 represents a component with relatively soft hardness. The hardness of the brush part 323 may be smaller than the hardness of the first extension part 321 or the second extension part 322 . As shown in FIG. 6 , the brush portion 323 is provided at one end of the second extension portion 322 close to the first filter screen 2 , and the brush portion 323 is in contact with the inner surface 21 of the first filter screen 2 . When the cleaning arm 32 rotates relative to the first filter screen 2, one end of the brush part 323 is connected to the second extension part 322, and the other end of the brush part 323 is in contact with the first filter screen 2. The brush part 323 is configured as When the end of the brush part 323 connected to the second extension part 322 of the flexible material rotates, the other end of the brush part 323 is rubbed by the first filter 2 and elastically deforms relative to the end connected to the second extension part 322 , while the second extension part 322 continues to rotate, the brush part 323 will continue to rotate following the second extension part 322 in a deformed state. In the embodiment of the present invention, a brush part is provided at one end of the second extension part, which reduces the resistance during the rotation of the cleaning device. The brush part has a certain deformation ability, and the brush part can more easily contact the first filter screen. Small holes inside, thereby improving the cleaning effect of the first filter.

In some embodiments, as shown in FIG. 6 , the length of the second extension 322 is equal to the length of the cavity 20 in the vertical direction. The length direction of the second extension part 322 is the up-and-down direction of the second extension part as shown in FIG. 6 . By setting the length of the second extension part equal to the length of the cavity in the vertical direction, the second extension part or the brush part provided on the second extension part can contact the second filter screen in a wider range, thereby improving the efficiency of the second extension part. The cleaning range of the second filter screen is improved, thereby improving the cleanliness of the second filter screen. Of course, in some embodiments, the length of the second extension part 322 may also be less than the length of the cavity in the vertical direction. For example, the length of the second extension part 322 may be greater than or equal to 0.5 times the length of the cavity and less than or equal to the length of the cavity. . The embodiment of the present invention limits the ratio of the length of the second extension part to the length of the cavity within a certain range, which is beneficial to improving the cleanliness of the second filter.

In some embodiments, as shown in FIG. 4 , one end of the first extension part 321 in the radial direction is connected to the middle part of the connecting rod 31 in the vertical direction. That is to say, the first extension part 321 is roughly connected to the middle position of the connecting rod 31, so the water flow derived from the water outlet 330 on the first extension part 321 also roughly hits the midpoint of the first filter in the vertical direction. Near the position, it is helpful to improve the balance of the force received by the cleaning component in the vertical direction, thereby improving the rotation efficiency of the cleaning component.

In some embodiments, as shown in Figure 4, the connecting rod 31 includes a first connecting portion 311, a second connecting portion 312, and a second connecting portion 312. The first connecting part 311 extends in the vertical direction. As shown in FIG. 6 , the upper end of the first connecting part 311 is rotatably connected to the first filter screen 2 . In the embodiment shown in FIG. 6 , the first connecting part 311 is rotatably connected to the first filter screen 2 . The top is provided with a protrusion 22 protruding toward the cavity 20. The upper end of the first connecting portion 311 is provided with a blind hole 3111. The protrusion 22 can extend into the blind hole 3111. The blind hole 3111 can rotate relative to the protrusion 22, but the protrusion 3111 can rotate relative to the protrusion 22. 22 plays a limiting role in the radial direction of the blind hole 3111. On this basis, the first filter screen 2 and the connecting rod 31 play a radial fixing role through the limiting function of the protrusion 22 and the blind hole 3111, and the connection The rod 31 can rotate relative to the first filter screen 2 and will not affect the cleaning of the first filter screen by the cleaning assembly. In other embodiments, the top of the first filter screen 2 can be configured as a hole, and the upper end of the first connecting portion 311 can be configured as a protrusion. No matter what structure is adopted, as long as the first filter screen 2 can connect to the first connecting portion 311 It only serves as a radial limiter without affecting circumferential rotation.

As shown in FIG. 3 , FIG. 4 and FIG. 6 , the second connecting part 312 is connected to the lower end of the first connecting part 311 . The embodiment of the present invention does not limit the connection method between the first connecting part 311 and the second connecting part 312 , as long as the first connecting part 311 is connected to the lower end of the first connecting part 311 . The connecting part 311 and the second connecting part 312 can be kept fixed. A partial water inlet channel 310 is provided inside the second connection part 312. The side of the second connection part 312 close to the first connection part 311 is connected to the cleaning arm 32; the third connection part 313 is connected to the lower end of the second connection part 312, and Another part of the water inlet channel 310 is provided inside the third connecting part 313, and the third connecting part 313 is rotatably connected to the water cup assembly 1. As shown in Figure 6, the direction indicated by the arrow in Figure 6 is the direction of water flow. The water flows upward from the lower end of the third connection part 313 and flows into the water inlet channel 310 inside the second connection part 312. The water inlet channel 310 The water in the filter flows from the upper part of the water inlet channel 310 to the diverting channel 320, and finally hits the inner surface 21 of the first filter screen 2 from the water outlet 330. The water in the cavity 20 can be guided to the outside of the first filter screen 2 through the first filter screen 2 , and solid residues are retained in the cavity 20 of the first filter screen 2 .

In some embodiments, as shown in FIG. 4 , the third connecting portion 313 is provided as a plurality of comb teeth 3131 spaced along the circumferential direction. The embodiment of the present invention does not limit the number of comb teeth 3131. As shown in FIG. 3, when the connecting rod 31 is installed on the water cup assembly, the upper end of the connecting rod 31 is rotatably connected to the first filter screen 2. The connecting rod 31 is rotatably connected to the first filter screen 2. The lower end of 31 is rotatably connected to the water cup assembly. A water inlet pipe 10a can be provided on the side of the water cup assembly 1 close to the accommodation cavity 10. The third connection portion 313 can be sleeved on the water inlet pipe 10a, and the water inlet pipe 10a can limit the third connection portion in the radial direction. position, and the water inlet pipe 10a and the protrusion 22 of the first filter screen can jointly limit the position of the connecting rod 31 in the vertical direction. When the connecting rod 31 rotates relative to the first filter, the third connecting part 313 also rotates relative to the water inlet pipe 10a, and part of the solid residue in the cavity 20 will enter between the third connecting part 313 and the water inlet pipe 10a. When solid residue gradually accumulates in the gap, the more residue there will be in the gap between the third connecting part 313 and the water inlet pipe 10a, and the solid residue accumulated in the gap will increase the size of the gap between the third connecting part 313 and the water inlet pipe 10a. The friction force 10a increases the resistance of the third connecting part 313 to rotate relative to the water inlet pipe 10a. In the embodiment of the present invention, by arranging the third connecting part 313 as a structure of comb teeth 3131, when the third connecting part 313 rotates relative to the water inlet pipe 10a, the residue in the gap can easily pass from between the comb teeth 3131 and the comb teeth 3131. The gap between the third connection part and the water inlet pipe runs out of the gap, which reduces the risk of residues accumulating in the gap between the third connection part and the water inlet pipe, which is conducive to improving the smoothness of rotation between the third connection part and the water inlet pipe, thereby improving the cleaning component The efficiency of cleaning the second filter.

In some embodiments, as shown in FIG. 4 , the cleaning assembly 3 is provided with a plurality of cleaning arms 32 . The plurality of cleaning arms 32 are arranged at circumferential intervals around the connecting rod 31 . The number of cleaning arms 32 in the embodiment of the present invention can be Set to 2-6, by limiting the number of cleaning arms 32 within a certain range, it can not only improve the efficiency of the cleaning arms to drive the cleaning assembly to rotate, but also control the intensity of the water flow exported by each cleaning arm to a certain intensity, thereby improving The cleaning efficiency of the cleaning component on the first filter. As shown in FIG. 4 , the water outlets 330 on the plurality of cleaning arms 32 are located on the same side. That is to say, the water outlets 330 on the plurality of cleaning arms 32 are all arranged on the same side of the cleaning arm 32 in the circumferential direction, so that the directions of the water flows exported by the plurality of cleaning arms 32 are consistent, which is beneficial to improving the efficiency of the cleaning arms to drive the cleaning device to rotate. efficiency.

In some embodiments, as shown in FIGS. 2 and 3 , the water cup assembly 1 includes a water cup 11 , a second filter member 12 and a cup handle 13 . The water cup 11 is provided with an accommodating cavity 10 inside. The top of the accommodating cavity 10 is open 103. The bottom of the accommodating cavity 10 is provided with a water inlet 101 connected to the cavity 20. As shown in Figure 3, the water inlet 101 is formed by a water inlet pipe 10a. . One end of the water inlet pipe 10a is connected to the external water flow, and the other end of the water inlet pipe 10a is connected to the cavity 20 inside the first filter 2. It should be noted that the water flow introduced into the water inlet pipe 10a can be clean water outside the filter device. Tap water can also be circulating water inside the filter device. The circulating water is water that enters the accommodation cavity 10 of the water cup 11 after being filtered by the first filter 2 from the cavity. The water in the water cup 11 is then pumped out by the washing pump. It is sucked into the water inlet pipe 10a for recycling.

As shown in FIG. 3 , a water return port 102 is provided on the side of the accommodation cavity 10 of the water cup 11 . The water return port 102 is connected to the washing pump 400 . The washing pump 400 returns the water filtered by the first filter screen 2 in the water cup 11 from the water return port 102 . The water inlet 102 is sucked into the water inlet pipe 10a for cleaning the first filter. Alternatively, as shown in FIG. 1 , the washing pump 400 can also suck the filtered water in the water cup 11 into the water outlet pipe 500 for washing. The dishwasher is used to rinse dishes, thereby recycling filtered water and saving water and electricity consumption.

As shown in FIGS. 2 and 3 , the second filter element 12 is disposed at one end of the water cup 11 close to the opening 103 ; the second filter element 12 extends generally along the horizontal direction, and the second filter element 12 can be provided for liquid to flow through. The filter screen 121 can be provided with multiple filters, and the multiple filter screens 121 are connected to the washing cavity 201 and the accommodation cavity 10 of the dishwasher. It should be noted that the above accommodation cavity 10 represents the water cup 11 and the third The gap between the first filter screen 2, that is, when the liquid enters the water cup 11 from the washing chamber 201 through the filter screen 121 on the second filter element 12, is located outside the first filter screen 2, not the first filter screen 2. The inside of the filter screen 2, that is to say, the water flow does not need to pass through the cavity 20 of the first filter screen 2 and can be directly supplied to the washing pump for suction circulation, which is beneficial to improving the efficiency of the dishwasher's circulating water suction cycle.

It should be noted that the mesh size of the filter screen 121 of the second filter member 12 is small, that is to say, the second filter member 12 only allows liquid to enter the water cup 11 from the filter screen 121 and can block solid particles. in the washing chamber 201.

As shown in FIGS. 2 and 3 , the second filter member 12 is provided with a through hole 123 that runs through in the vertical direction. The cup handle 13 is located on the side of the second filter member 12 away from the water cup 11 , and the other part of the cup handle 13 is located on the side of the second filter member 12 away from the water cup 11 . It can pass through the through hole of the second filter element 12, and the cup handle 13 passing through the second filter element 12 can be connected with the first filter screen 2. It should be noted that the embodiment of the present invention does not limit the connection between the cup handle 13 and the first filter screen 2. The connection method of the filter screen 2 is as shown in Figure 2. The lower end of the cup handle 13 can be provided with a first clamping member 131, and the upper end of the first filter screen 2 can be provided with a second clamping member 132. The first clamping member 131 can be The second clamping member 132 can be configured as a protrusion, and the second clamping member 132 can be configured as a groove, and the first filter 2 and the cup handle 13 can be detachably connected through the limiting of the first clamping member 131 and the second clamping member 132. , in other embodiments, the cup handle 13 can be detachably connected to the first filter screen 2 through a threaded connection. In the embodiment of the present invention, the cup handle 13 can be detachably connected to the first filter screen 2, which is beneficial to The cup handle 13 and the first filter screen 2 are processed and manufactured separately, thereby reducing production difficulty and cost.

The cup lift 13 in the embodiment of the present invention is used to introduce liquid and/or solid into the cavity 20 . When the filter device 100 is installed in a dishwasher, the cup handle 13 communicates with the washing cavity 201 of the dishwasher and the cavity 20 inside the first filter 2 . The cup handle 13 has a larger-sized through hole. The liquid in the washing chamber 201 can be preliminarily filtered, larger impurities can be blocked in the washing chamber 201 , and smaller solids and liquids can be directed to the cavity 20 in the first filter screen 2 . The mesh size of the first filter screen 2 is small, which can basically block all the solid particles in the cavity, and guide the liquid between the first filter screen and the water cup, thereby achieving secondary filtration of the liquid. When the solids in the cavity 20 accumulate to a certain extent, a drain pump can be used to drain the residue or liquid with residue in the cavity 20 to the outside of the dishwasher.

An embodiment of the present invention also provides a dishwasher. As shown in FIGS. 1 and 3 , the dishwasher includes a housing, a filter device 100 according to any of the above embodiments, a drainage pump 300 and a washing pump 400 . There is a washing cavity 201 inside the casing, and the dishes to be cleaned can be placed in the washing cavity 201. The filter device 100 is disposed at the bottom of the washing chamber 201; the drainage pump 300 is connected to the cavity 20 inside the first filter screen 2, and the drainage pump 300 is used to guide the solids and/or liquids in the cavity 20 to the outside of the dishwasher for washing. One end of the pump 400 is connected between the first filter 2 and the water cup assembly 1 , and the other end of the washing pump 400 is connected with the inside of the washing chamber 201 and/or the cleaning assembly 3 . That is to say, the washing pump 400 can guide the water filtered by the filtering device 100 to the inside of the cleaning component 3 so that the cleaning component 3 can spray the first filter 2 . Alternatively, the washing pump 400 can also direct the water filtered by the filtering device 100 to the interior of the cleaning component 3 . The water is directed into the water outlet pipe 500, and the water outlet pipe 500 guides the water to the corresponding spray arm 600. The spray arm 600 is rotatably connected to the water outlet pipe 500. During the water discharge process, the force of the water flow will drive the spray arm. 600 rotates relative to the water outlet pipe 500 to eject water flow, so that the water flow can have a certain kinetic energy and hit the surface of the bowls in the washing chamber 201, thereby cleaning the bowls. There may be multiple spray arms 600 in the embodiment of the present invention. For example, there are three spray arms 600 in the embodiment shown in FIG. 1 , which are respectively installed at the top, middle and bottom of the washing chamber. Multiple spaced spray arms can be used to spray wash dishes of different heights, thereby improving the washing efficiency of the dishwasher.

In addition, the terms “first” and “second” are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of indicated technical features. Therefore, features defined as "first" and "second" may explicitly or implicitly include one or more of these features. In the description of the present invention, "plurality" means two or more, unless otherwise clearly and specifically limited.

In the present invention, unless otherwise clearly stated and limited, the terms "installation", "connection", "connection", "fixing" and other terms should be understood in a broad sense. For example, it can be a fixed connection or a detachable connection. , or integrated into one; it can be directly connected or indirectly connected through an intermediate medium. It can be the internal connection between two elements or the interaction between two elements.

In the present invention, unless otherwise expressly stated and limited, a first feature being "on" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. touch.

Claims

A filtering device, which includes:

A water cup assembly with a receiving cavity inside;

A first filter screen is arranged in the accommodation cavity. A cavity is provided inside the first filter screen. The cavity is connected to the outside of the accommodation cavity and guides the liquid flowing into the cavity to between the first filter and the water cup assembly, and retain solids in the cavity;

A cleaning component is movably disposed in the cavity, and the cleaning component is at least partially in contact with the inner surface of the first filter screen.
The filter device according to claim 1, wherein the cleaning component includes:

A connecting rod extends along the vertical direction. The connecting rod is rotatably arranged in the cavity around the vertical direction. A water inlet channel is provided in the connecting rod; the water inlet channel is used to introduce water flow;

A cleaning arm is connected to one side of the connecting rod in the circumferential direction. A shunt channel is provided inside the cleaning arm. The shunt channel is connected with the water inlet channel. The shunt channel is formed on the surface of the cleaning arm. The water outlet faces the inner surface of the first filter screen.
The filter device of claim 2, wherein the cleaning arm includes:

The first extension part extends in the radial direction and is provided with the diverting channel inside. One end of the first extension part in the radial direction is connected to the connecting rod; the first extension part is provided with the water outlet. ;

The second extension part is connected to one end of the first extension part away from the connecting rod, the second extension part extends in the vertical direction, and the end of the second extension part away from the first extension part is close to The inner surface of the first filter screen.
The filter device according to claim 3, wherein the same cleaning arm is provided with a plurality of water outlets connected to the shunt channel, namely a first water outlet and a second water outlet, and the first water outlet and the The second water outlets are radially spaced apart and located on the same side of the first extension, and the first water outlet is closer to the second extension than the second water outlet.
The filter device according to claim 4, wherein the angle between the extension direction of the first water outlet and/or the second water outlet and the extension direction of the first extension part is greater than or equal to 30 degrees and less than or equal to 30 degrees. 60 degrees.
The filter device according to any one of claims 3-5, wherein the cleaning arm further includes:

The brush portion is provided at one end of the second extension portion close to the first filter screen, and the brush portion is in contact with the inner surface of the first filter screen.
The filter device according to any one of claims 3 to 6, wherein the length of the second extension is equal to the length of the cavity in the vertical direction.
The filter device according to any one of claims 3-7, wherein one end of the first extension portion in the radial direction is connected to the middle portion of the connecting rod in the vertical direction.
The filter device according to any one of claims 3-8, wherein the connecting rod includes:

The first connecting part extends in the vertical direction, and the upper end is rotatably connected to the first filter;

The second connection part is connected to the lower end of the first connection part. A part of the water inlet channel is provided inside the second connection part. The second connection part is connected to the side close to the first connection part. The cleaning arm;

A third connection part is connected to the lower end of the second connection part, and another part of the water inlet channel is provided inside the third connection part. The third connection part is rotatably connected to the water cup assembly.
The filter device according to claim 9, wherein the third connecting portion is provided as a plurality of comb teeth spaced circumferentially.
The filter device according to any one of claims 2 to 10, wherein the cleaning assembly is provided with a plurality of cleaning arms, the plurality of cleaning arms are arranged at circumferential intervals around the connecting rod, and a plurality of the The water outlets on the cleaning arm are all located on the same side.
The filter device according to any one of claims 1-11, wherein the water cup assembly includes:

The water cup has the accommodation cavity inside, the top of the accommodation cavity is open, the bottom of the accommodation cavity is provided with a water inlet connected to the cavity, and the side of the accommodation cavity is provided with a water return port;

A second filter element is provided at one end of the water cup close to the opening;

The cup handle is partly located on the side of the second filter member away from the water cup, and the other part passes through the second filter member and is connected to the first filter screen. The cup handle introduces liquid into the cavity. and/or solid.
A dishwasher, including:

A shell with a washing chamber inside;

The filter device according to any one of claims 1-12, arranged in the washing chamber;

A drainage pump, connected to the cavity inside the first filter, and exporting the solids and/or liquids in the cavity to the outside of the dishwasher;

A washing pump has one end connected between the first filter and the water cup assembly, and the other end connected with the inside of the washing chamber and/or the cleaning assembly.