Slag collecting device and dish washing machine

Abstract

The invention provides a residue collecting device and a dish-washing machine, the residue collecting device comprises a water tank, a driving pump and a filtering assembly, and a water passing cavity is formed in the water tank; the driving pump comprises an impeller, and the impeller is rotationally arranged in the water passing cavity; the filtering assembly is arranged in the water passing cavity and located above the impeller, a filtering cavity is formed in the filtering assembly, and a slag collecting opening communicated with the filtering cavity is formed in the top of the filtering cavity; the included angle between the rotating central axis of the impeller and the depth direction of the water tank is smaller than or equal to 30 degrees, so that water flow vortexes are formed in the water passing cavity, the water flow vortexes guide water flow and residues to flow into the filtering cavity from the residue collecting opening, and the filtering assembly allows the water flow to flow out through the peripheral side and the bottom of the filtering cavity. And residues are collected into the filtering cavity. The filter assembly is used for solving the technical problem that residues are easy to adhere to the filter assembly, and the filtering effect is affected.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of kitchen appliances, in particular to a slag collecting device and a dishwasher. BACKGROUND

[0002] The dishwasher is an automatic cleaning device widely used in household kitchens, catering industry and commercial places, which can be used to clean bowls, plates, chopsticks, spoons, knives and forks and other types of tableware. The slag collecting device is the core component of the dishwasher to realize residue separation and ensure smooth drainage, and its performance directly determines the cleaning effect, service life and user experience of the dishwasher.

[0003] In the current slag collecting device of the dishwasher, the water flow force is dispersed, and the residue is easy to adhere to the filter assembly. With the increase of the number of uses, the accumulated residue will gradually cover the filter holes of the filter assembly, not only reducing the filtering efficiency, but also easily causing the filter holes to be blocked, thereby affecting the drainage rate of the dishwasher. In severe cases, it may cause drainage system failure and increase equipment maintenance costs.

[0004] Therefore, it is urgent to solve the technical problem that the residue is easy to adhere to the filter assembly and affects the filtering effect. SUMMARY

[0005] The present application provides a slag collecting device and a dishwasher to solve the technical problem that the residue is easy to adhere to the filter assembly and affects the filtering effect.

[0006] In order to achieve the above purpose, the present application provides a slag collecting device, comprising:

[0007] A water tank is formed in the water tank.

[0008] A drive pump comprising an impeller is arranged inside the water tank.

[0009] A filter assembly is arranged inside the water tank and above the impeller, and the filter assembly has a filter cavity inside, and the top of the filter cavity has a slag collecting port communicating with the filter cavity.

[0010] The angle between the center axis of rotation of the impeller and the depth direction of the water tank is less than or equal to 30°, so as to form a water flow vortex in the water tank. The water flow vortex guides the water flow and the residue to flow into the filter cavity from the slag collecting port. The filter assembly allows the water flow to flow out through the side and bottom of the filter cavity, and collects the residue into the filter cavity.

[0011] The slag collecting device provided by the embodiment of the present application greatly reduces the occupation of the plane space by arranging the rotating center axis of the impeller and the depth direction of the water tank at an angle less than or equal to 30°, and the water flow in the water tank is easily formed into a water flow vortex by the rotation of the impeller, the center pressure of the water flow vortex is low, and the residual slag is introduced into the filter assembly, the residual slag in the water flow is collected, and the cleaning effect on the tableware is improved.

[0012] In a possible implementation, the rotating center axis of the impeller is parallel to the depth direction of the water tank.

[0013] In a possible implementation, the driving pump further comprises a driving motor arranged on the outer bottom wall of the water tank, the driving motor has an output shaft extending into the water passage, and the impeller is connected to the output shaft.

[0014] In a possible implementation, the water passage comprises a water inlet cavity and a water outlet cavity in communication with each other, the water outlet cavity is arranged at the bottom of the water inlet cavity along the depth direction of the water tank, the filter assembly is located in the water inlet cavity, the outer wall of the water tank has a drain port in communication with the side wall of the water outlet cavity, the drain port is used for connecting a drain valve or a drain pipe, and the impeller is located in the water outlet cavity.

[0015] In a possible implementation, the outer wall of the water tank further has a water inlet port in communication with the side wall of the water inlet cavity, and the water inlet port is used for connecting a washing pump.

[0016] The impeller is located between the water inlet port and the drain port along the depth direction of the water tank, so that the driving pump assists the washing pump to supply water to the water inlet port.

[0017] In a possible implementation, the bottom of the filter assembly has a flow passage for the residual slag, and the side wall of the water tank has a drain port.

[0018] The slag collecting device further comprises a filter bottom plate movably arranged between a first position in which the filter bottom plate closes the flow passage and a second position in which the filter bottom plate opens the flow passage, residual slag is collected in the filter assembly when the filter bottom plate is in the first position, and at least part of the residual slag in the filter assembly is discharged through the flow passage when the filter bottom plate is in the second position.

[0019] In one possible implementation, the slag collection device further includes a baffle assembly disposed at the slag collection port. The baffle assembly is configured to open the slag collection port when water flows into the filter chamber through the slag collection port to collect residue into the filter chamber, and to close the slag collection port when water flows out of the filter chamber through the slag collection port to prevent residue in the filter chamber from escaping through the slag collection port.

[0020] In one possible implementation, the baffle assembly includes two baffles that are flipped relative to each other and disposed on the inner wall of the filter chamber. The baffle assembly has a first state in which the two baffles are flattened relative to each other, and a second state in which the two baffles are folded relative to each other into the filter chamber.

[0021] When the baffle assembly is in the second state, the baffle assembly rotates under the impact of the water flow into the filter chamber through the slag collection port, so as to open the slag collection port;

[0022] When the baffle assembly is in the first state, the baffle assembly rotates in the opposite direction under the action of the water flowing out of the filter chamber through the slag collection port, so as to close the slag collection port.

[0023] In one possible implementation, the side of the impeller facing the filter assembly has a clearance space for accommodating the bottom of the filter base plate in the second position.

[0024] The present invention also provides a dishwasher, including the above-described slag collection device.

[0025] The present invention provides a slag collection device and dishwasher. By continuously flushing the filter component with water vortex formed by the impeller in the water passage chamber, the residue attached to the surface of the filter component can be effectively washed away, thereby achieving the self-cleaning effect of the filter component, preventing the filter holes of the filter component from being blocked, and improving the return water speed of the spray arm circulating water.

[0026] The present invention provides a slag collection device and dishwasher. By setting a baffle assembly at the slag collection port, the baffle assembly is driven to rotate by the impact force of the water flow, thereby realizing the automatic opening and opening degree adjustment of the slag collection port. There is no need to set up an additional manual drive structure or electric drive device, which simplifies the overall structural design, while greatly reducing the frequency of manual intervention and operating costs, and improving the degree of automation and ease of use.

[0027] In addition to the technical problems solved by the embodiments of the present invention, the technical features constituting the technical solutions, and the beneficial effects brought about by the technical features of these technical solutions described above, other technical problems that can be solved by the slag collection device and dishwasher provided by the embodiments of the present invention, other technical features included in the technical solutions, and the beneficial effects brought about by these technical features will be further described in detail in the specific embodiments. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0029] Figure 1 A cross-sectional view of the slag collection device provided in an embodiment of the present invention;

[0030] Figure 2 This is another cross-sectional view of the slag collection device provided in an embodiment of the present invention;

[0031] Figure 3 A three-dimensional structural schematic diagram of the drive pump for the slag collection device provided in an embodiment of the present invention;

[0032] Figure 4 This is a schematic diagram showing the first filter base plate of the slag collection device provided in an embodiment of the present invention in a second position;

[0033] Figure 5 This is a schematic diagram showing the first filter base plate of the slag collection device provided in an embodiment of the present invention in a first position;

[0034] Figure 6 for Figure 5 Enlarged view of the structure at point A;

[0035] Figure 7 This is a partial exploded view of another slag collection device provided in an embodiment of the present invention;

[0036] Figure 8 A schematic diagram showing the second filter base plate in a second position in another slag collection device provided in an embodiment of the present invention;

[0037] Figure 9 A schematic diagram showing the second filter base plate in the first position of another slag collection device provided in an embodiment of the present invention;

[0038] Figure 10 for Figure 9 Enlarged view of the structure at point B;

[0039] Figure 11 This is a three-dimensional structural diagram of the slag collection device provided in an embodiment of the present invention;

[0040] Figure 12 A three-dimensional structural diagram of a partial structure of a dishwasher provided in an embodiment of the present invention;

[0041] Figure 13 A schematic diagram of the two baffles of the baffle assembly of the slag collection device provided in an embodiment of the present invention in a second state;

[0042] Figure 14 for Figure 13 A schematic diagram of the structure at point C;

[0043] Figure 15 A schematic diagram of the two baffles of the baffle assembly of the slag collection device provided in an embodiment of the present invention in a first state;

[0044] Figure 16 for Figure 15 A schematic diagram of the structure at point D;

[0045] Figure 17 A schematic diagram of the two baffles of the baffle assembly of the slag collection device provided in an embodiment of the present invention in a second state;

[0046] Figure 18 for Figure 17 A schematic diagram of the structure at point E;

[0047] Figure 19 for Figure 2 A schematic diagram of the structure at point F.

[0048] Explanation of reference numerals in the attached figures:

[0049] 10-Water tank; 11-Water passage cavity; 111-Water inlet cavity; 112-Water outlet cavity; 12-Water inlet; 13-Drain outlet; 14-Support platform; 141-Connecting hole; 15-Drainage channel; 16-Water supply port; 17-First fastening part;

[0050] 20-Drive pump; 21-Drive motor; 211-Output shaft; 22-Impeller; 221-Chassis; 222-Blade; 223-Protective plate; 224-Clearing space; 225-Clearing passage;

[0051] 30 - Filter base plate; 31 - First filter base plate; 311 - First guide part; 313 - Limiting part; 32 - Second filter base plate; 321 - Fixing post; 322 - Fixing buckle;

[0052] 40 - Coarse filter element; 41 - First filter cylinder; 411 - Flow channel; 412 - Second guide part; 413 - First connecting rib; 42 - Second filter cylinder; 421 - Limiting protrusion; 422 - Second connecting rib; 423 - Handle; 424 - Fixing sleeve; 43 - Outward flange; 45 - Filter chamber; 451 - Slag collection port; 46 - Connecting hole; 47 - Stop part;

[0053] 50 - Fine filter element; 51 - Outer filter cartridge; 52 - Inner filter cartridge;

[0054] 54-Filter chamber; 55-Bottom mounting plate; 56-Second fastening part;

[0055] 60 - Electromagnetic components;

[0056] 70-Baffle assembly; 71-Baffle; 711-Baffle body; 712-Connecting shaft; 713-Flexible sleeve; 714-Anti-detachment part; 72-Reset part; 721-Coil part; 722-First torsion arm; 723-Second torsion arm;

[0057] 80 - Drain valve; 90 - Inner tank; 91 - Washing chamber. Detailed Implementation

[0058] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0059] Current dishwashers often use horizontally positioned drive pumps for waste collection. However, the impeller's rotation direction is at an angle to the water flow direction, making it difficult to create a stable vortex effect. This results in waste not being adequately concentrated in the filter assembly, and the filter screen easily becoming clogged. While the impeller rotation drives water flow in the tank, it struggles to create an effective vortex effect, leading to dispersed water flow. Waste cannot be concentrated in the filter assembly, nor can the centrifugal force of the vortex actively guide waste into the filter assembly. Consequently, waste accumulates on the filter screen surface, even clogging the filter pores.

[0060] This directly leads to a significant increase in the overall height of the waste collection device, which not only contradicts the design trend of dishwashers towards lightweight and compact designs, but may also be limited by the sink installation space, reducing the product's compatibility with different sizes of dishwashers. On the other hand, because the waste discharge path overlaps with the impeller's installation position, the discharged blocky waste and flocculent oil mixture are prone to entanglement or jamming between the impeller blades, hindering the impeller's normal rotation and reducing drainage efficiency.

[0061] In view of this, the slag collection device and dishwasher provided by the present invention, by rotating the impeller inside the water passage cavity, with the angle between the rotation center axis of the impeller and the depth direction of the water tank being less than or equal to °, greatly reduces the occupation of planar space. When the impeller rotates, it easily drives the water flow in the water passage cavity to form a water flow vortex. The pressure at the center of the water flow vortex is low, which is conducive to introducing the residue into the filter component, collecting the residue in the water flow, and improving the cleaning effect on tableware.

[0062] refer to Figure 1 and Figure 2 As shown, this embodiment of the invention provides a slag collection device, including: a water tank 10, a drive pump 20, and a filter assembly. A water passage cavity 11 is formed inside the water tank 10. The drive pump 20 includes an impeller 22, which is rotatably disposed inside the water passage cavity 11. The filter assembly is disposed inside the water passage cavity 11 and located above the impeller 22. The filter assembly has a filter chamber 45 inside, and the top of the filter chamber 45 has a slag collection port 451 communicating with the filter chamber 45. The angle between the rotation center axis of the impeller 22 and the depth direction of the water tank 10 is less than or equal to 30°, so as to form a water flow vortex in the water passage cavity 11. The water flow vortex guides the water flow and residue from the slag collection port 451 into the filter chamber 45. The filter assembly allows the water flow to flow out through the periphery and bottom of the filter chamber 45 and collects the residue into the filter chamber 45.

[0063] The present invention provides a slag collection device by rotating an impeller 22 inside a water passage chamber 11. The angle between the rotation center axis of the impeller 22 and the depth direction of the water tank 10 is less than or equal to 30°, which greatly reduces the space occupied in the plane. When the impeller 22 rotates, it easily drives the water flow in the water passage chamber 11 to form a water flow vortex. The pressure at the center of the water flow vortex is low, which is conducive to introducing the residue into the filter assembly, collecting the residue in the water flow, and improving the cleaning effect on tableware.

[0064] The slag collection device provided in this embodiment of the invention has an impeller 22 rotatably set inside the water passage chamber 11. The angle between the rotation center axis of the impeller 22 and the depth direction of the water tank 10 is less than or equal to 30°. This makes the drive pump 20 always in a self-priming state, which can be easily started without the need for an additional vacuum device. This effectively avoids cavitation and improves the reliability and service life of operation.

[0065] In one possible implementation, the angle between the rotational center axis of the impeller 22 and the depth direction of the water tank 10 can be 0°, 1°, 2°, 5°, 10°, 15°, 20°, 25° or 30°.

[0066] In one possible implementation, the rotational axis of the impeller 22 is parallel to the depth direction of the water tank 10. When the impeller 22 rotates, it drives the water flow in the water passage 11 to form a water vortex. The pressure at the center of the water vortex is low, which is beneficial for introducing residue from the residue collection port 451 into the filter chamber 45 of the filter assembly, collecting the residue in the water flow, and improving the cleaning effect on tableware.

[0067] In one possible implementation method, refer to Figure 4 and Figure 5 As shown, the rotational axis of impeller 22 is parallel to the depth direction of water tank 10. That is, the angle between the rotational axis of impeller 22 and the depth direction of water tank 10 is 0°, meaning the rotational axis of impeller 22 is aligned with the depth direction of water tank 10. With this structure, in the water vortex, the direction of the water flow is tangential to the circumference of the filter assembly, thus forming a tangential scouring flow that scours the filter assembly 360° circumferentially, reducing blind spots. Furthermore, the shear force of the water flow removes residue adhering to the filter assembly, achieving a self-cleaning effect and preventing food residue from clogging the filter assembly, allowing the residue to detach from the filter assembly and be discharged with the water flow.

[0068] In one possible implementation, the impeller 22 is rotatably disposed at the bottom of the water passage chamber 11. The impeller 22 is configured to drive the water flow within the water passage chamber 11 to form a water vortex during rotation. The water flow velocity is high and the pressure is low on the inner side of the vortex, while the water flow velocity is low and the pressure is high on the outer side. This pressure difference creates a suction force pointing towards the center of the vortex, accelerating the discharge of water and entraining residue adhering to the inner wall of the filter assembly into the water flow. This solves the problem of food residue easily adhering to the filter pores of the filter assembly, forming residue accumulation and causing blockage of the circulating water. Furthermore, under the action of centrifugal force, denser residue is thrown towards the inner wall of the filter assembly and moves downwards along the inner wall, improving the residue cleaning effect and helping to prevent problems such as odor and bacterial growth caused by long-term residue adhesion.

[0069] In one possible implementation method, refer to Figure 1 and Figure 2 As shown, the water tank 10 adopts a one-piece molded structure, and the whole is shaped like a container with an open top.

[0070] In one possible implementation, the side wall of the water tank 10 has a drain outlet 13, which communicates with the water passage chamber 11. The drain outlet 13 is used to connect to a drain valve 80 or a drain pipe. The drain outlet 13 can be connected to the inlet of the drain valve 80, and the outlet of the drain valve 80 is connected to the drain pipe. The drain valve 80 has two states: closed and open. When the drain valve 80 is open, water and residue can be discharged into the sewer through the drain outlet 13. When the drain valve 80 is closed, water cannot be discharged through the drain valve 80.

[0071] In one possible implementation, the central axis of rotation of the impeller 22 is parallel to the depth direction of the water tank 10. That is, the angle between the central axis of rotation of the impeller 22 and the depth direction of the water tank 10 is 0°.

[0072] The rotation axis of impeller 22 is aligned with the direction of gravity. Under the influence of gravity, water naturally fills impeller 22, solving the problem of incomplete priming caused by horizontal installation of horizontal pumps, reducing air binding, and ensuring full contact between impeller 22 and water flow when drive pump 20 starts. At the same time, it reduces the formation of air and water vapor bubbles, reduces cavitation problems, and avoids wear and cracks in impeller 22 caused by micro-jet impacts from bubble collapse.

[0073] In addition, the rotation center axis of the impeller 22 is aligned with the direction of gravity, which makes the force on the impeller 22 more balanced. The radial load generated during rotation is evenly distributed along the direction of gravity, reducing the unilateral force offset caused by horizontal installation.

[0074] The water flow forms a vortex flow field tangentially along the circumference of the filter component. The water flow washes the filter component tangentially, and the shearing force of the water flow efficiently removes food residues attached to the surface of the filter component and inside the filter holes. Through the continuous washing and shearing synergy of the vortex flow field, the filter component achieves a self-cleaning function, effectively preventing the accumulation of food residues on the surface of the filter component and the clogging of the filter holes. This ensures that the residues are completely separated from the filter component and are smoothly discharged with the water flow, guaranteeing the long-term stable operation of the filter component.

[0075] In one possible implementation method, refer to Figure 1 , Figure 2 and Figure 3 As shown, the drive pump 20 also includes a drive motor 21, which is disposed on the outer bottom wall of the water tank 10. The drive motor 21 has an output shaft 211 extending into the water passage chamber 11, and an impeller 22 is connected to the output shaft 211.

[0076] In one possible implementation, the drive motor 21 is disposed on the outer bottom wall of the water tank 10, and the drive motor 21 may be connected to the outer bottom wall of the water tank 10 by fasteners such as screws or bolts.

[0077] When the drive motor 21 is working, it drives the output shaft 211 to rotate, and the output shaft 211 drives the impeller 22 to rotate. The output shaft 211 transmits the rotational power of the drive motor 21 to the impeller 22, causing the impeller 22 to rotate. The water flowing into the impeller 22 is pushed by the impeller 22 and moves in a circular motion with the impeller 22. At the same time, driven by centrifugal force, it accelerates along the radial direction of the impeller 22 toward the outer edge of the impeller 22, thereby achieving drainage.

[0078] The impeller 22 has the advantages of small size and light weight, and can be directly connected to the output shaft 211 of the drive motor 21 without the need for a complex transmission mechanism.

[0079] In one possible implementation, the bottom of the filter assembly has a flow channel 411 for the passage of residue.

[0080] In one possible implementation, the slag collection device further includes a filter base plate 30, which is movably disposed between a first position where the flow channel 411 is closed and a second position where the flow channel 411 is open. When the filter base plate 30 is in the first position, the slag is collected into the filter assembly. When the filter base plate 30 is in the second position, at least a portion of the slag inside the filter assembly is discharged to the drain outlet 13 through the flow channel 411.

[0081] In one possible implementation, the side of the impeller 22 facing the filter assembly has a clearance space 224 for accommodating the bottom of the filter base plate 30 in the second position.

[0082] The present invention provides a slag collection device by rotating an impeller 22 within a water passage chamber 11. The side of the impeller 22 facing the filter assembly has a clearance space 224, which can accommodate the bottom of the filter base plate 30 in its second position. This reduces the overall height of the slag collection device, saving installation space and improving its versatility, making it well-suited for dishwashers of different sizes. Furthermore, when the filter base plate 30 is in the second position, at least some of the residue inside the filter assembly falls downwards into the clearance space 224 through the flow channel 411, reducing interference from the residue on the rotation of the impeller 22.

[0083] When the filter base plate 30 is in the second position, the residue inside the filter assembly falls downward into the clearance space 224 through the flow channel 411, which helps to reduce the interference of the residue on the rotation of the impeller 22.

[0084] In one possible implementation method, refer to Figure 2 and Figure 3 As shown, the impeller 22 includes a chassis 221 and multiple blades 222. The blades 222 are all connected to the side of the chassis 221 facing the filter assembly. The multiple blades 222 are arranged at intervals along the edge of the chassis 221 with the central axis of the chassis 221 as the center, and the multiple blades 222 are located on the periphery of the clearance space 224.

[0085] In one possible implementation, the chassis 221 may be disc-shaped, and the blades 222 and the chassis 221 may be integrally formed or fixedly connected.

[0086] In one possible implementation, the number of blades 222 can be 6, 8, 12, etc. The number, spacing and tilt angle of the blades 222 can be designed to form a flow guide structure that adapts to the flow of washing water and guides the flow direction of the washing water.

[0087] In one possible implementation, the blade 222 extends radially along the chassis 221, with the bottom end of the blade 222 fixedly connected to the surface of the chassis 221, for example by welding, injection molding, or bolting, and the top end of the blade 222 extending away from the chassis 221.

[0088] Multiple blades 222 are located around the clearance space 224. By dividing the blades 222 and clearance space 224 into separate areas, the blades 222 and clearance space 224 do not interfere with each other. The function of clearance space 224 is not affected by the occupancy of blades 222. This arrangement allows blades 222 to perform fluid drive function without encroaching on the reserved area of ​​clearance space 224, ensuring the normal use of clearance space 224.

[0089] In one possible implementation, a clearance passage 225 is formed between every two adjacent blades 222, one end of the clearance passage 225 is connected to the clearance space 224, and the other end of the clearance passage 225 extends to the edge of the chassis 221 and is open.

[0090] Considering that during the drainage process, when the filter base plate 30 is in the second position, the flow channel 411 is open, and the residue collected in the filter chamber 45 falls downward through the flow channel 411, it is easy to accumulate in the impeller 22, hindering the rotation of the impeller 22 and affecting the drainage efficiency. In this application, by adding an obstacle passage 225 in the impeller 22, the obstacle passage 225 provides a channel for the residue to leave the impeller 22. Food residue separated from the water flow can leave the impeller 22 through the obstacle passage 225, effectively solving the problem of food residue remaining in the impeller 22 and hindering the rotation of the impeller 22, thus ensuring drainage efficiency.

[0091] In one possible implementation, the residue collected by the filter assembly is discharged downward into the clearance space 224. When the impeller 22 rotates, the food residue can leave the impeller 22 through the clearance channel 225, effectively achieving the slag discharge effect without the need for additional shutdown cleaning.

[0092] When the impeller 22 rotates, the blades 222 accelerate and pressurize the water flow, converting mechanical energy into the kinetic and pressure energy of the water flow, causing the water to be transported to the drain outlet 13 along the clearance channel 225. During rotation, under the action of centrifugal force, impurities are more easily thrown out of the clearance channel 225 and carried away by the water flow, making them less likely to accumulate inside the impeller 22. This enhances its anti-clogging ability and helps ensure the normal rotation of the impeller 22, thereby guaranteeing the drainage effect.

[0093] The design parameters such as the number, shape, and angle of the blades 222 directly affect the working characteristics of the impeller 22. On the one hand, increasing the number of blades 222 can refine the division of the clearance channel 225, making the water flow more evenly stressed during rotation and significantly improving the stability of the output water flow. On the other hand, too many blades 222 will reduce the cross-sectional area of ​​the clearance channel 225, intensify the friction between the water flow and the surface of the blades 222, and increase the flow resistance, resulting in a decrease in the operating efficiency of the impeller 22. By specifically adjusting the number, curvature, and other key parameters of the blades 222, it is possible to adapt to the application requirements of different pressures and flow rates and improve the stability of the water flow.

[0094] In one possible implementation, the impeller 22 further includes a protective plate 223, which is connected to the ends of at least two blades 222 away from the chassis 221 and surrounds the periphery of the clearance space 224. By providing the protective plate 223, the ends of at least two blades 222 are linked and fixed, which can improve the stability of the blades 222 and prevent the blades 222 from deforming.

[0095] In one possible implementation, at least two blades 222 may be connected to the protective plate 223 at the ends away from the chassis 221 by welding, bolting, or integral molding.

[0096] In one possible implementation, the bottom end of the blade 222 is connected to the chassis 221, and the top end of the blade 222 is connected to the protective plate 223. This not only enhances the structural rigidity of the blade 222 and prevents the blade 222 from deforming during high-speed rotation, but also effectively covers the blade 222 from above.

[0097] In one possible implementation, the protective plate 223 may be in the shape of an arc. The number of protective plates 223 may be reasonably selected according to the needs of use. There may be three or more blades 222 whose ends away from the chassis 221 are connected to the same protective plate 223, and the ends of other three or more blades 222 whose ends away from the chassis 221 are connected to another protective plate 223.

[0098] In another possible implementation, the protective plate 223 may be in the shape of a circular plate, with all blades 222 connected to the same protective plate 223 at the end away from the chassis 221.

[0099] refer to Figure 1 and Figure 3 As shown, the impeller 22 is a centrifugal impeller, and the other end of the clearance channel 225 is directly opposite the drain outlet 13, which is conducive to the residue thrown out from the clearance channel 225 directly entering the drain outlet 13 and being discharged with the water flow.

[0100] This invention provides a slag collection device in which the drive motor 21 and the impeller 22 are connected in vertical series, which greatly reduces the space occupied in the plane, making the equipment layout more flexible and compact.

[0101] In one possible implementation method, refer to Figure 1 and Figure 3 As shown, the water passage chamber 11 includes an inlet chamber 111 and an outlet chamber 112 that are interconnected. Along the depth direction of the water tank 10, the outlet chamber 112 is arranged at the bottom of the inlet chamber 111. The filter assembly is located inside the inlet chamber 111. The outer wall of the water tank 10 has a drain port 13, which is connected to the side wall of the outlet chamber 112. The drain port 13 is used to connect to the drain valve 80 or the drain pipe. The impeller 22 is located inside the outlet chamber 112.

[0102] In one possible implementation method, refer to Figure 1 and Figure 2 As shown, a support platform 14 is provided on the inner wall of the water tank 10, which divides the water passage chamber 11 into an inlet chamber 111 and an outlet chamber 112. A connecting hole 141 is provided in the center of the support platform 14 to connect the inlet chamber 111 and the outlet chamber 112. The impeller 22 is rotatably disposed in the outlet chamber 112, and the filter assembly is located in the inlet chamber 111.

[0103] The support platform 14 can be a protruding ridge protruding from the inner wall of the water tank 10. The center of the support platform 14 is provided with a connecting hole 141 that connects the water inlet chamber 111 and the water outlet chamber 112. The connecting hole 141 can be circular, elliptical or rectangular.

[0104] The bottom edge of the bottom mounting plate 55 abuts against the support platform 14, which serves to support the filter assembly.

[0105] In one possible implementation, the filter assembly includes: a fine filter element 50, which is detachably disposed within the water passage cavity 11. The fine filter element 50 includes an outer filter cylinder 51 and a bottom mounting plate 55, which together form a filter cavity 45. The top of the outer filter cylinder 51 is open to form a slag collection port 451, and the bottom mounting plate 55 has an opening to form a flow passage 411. Both the filter base plate 30 and the fine filter element 50 have filter holes, and the diameter of the filter holes in the filter base plate 30 is equal to the diameter of the filter holes in the fine filter element 50.

[0106] In this example, the filter assembly is a single-layer structure. The pore size of the filter base plate 30 is equal to that of the filter pore size of the fine filter element 50, so that residue entering the filter chamber 45 can be intercepted by the filter base plate 30, preventing residue from affecting the operation of the drive pump 20. The filter base plate 30 can open and close the flow channel 411 through lifting and lowering movement.

[0107] In another possible implementation, refer to Figure 4 and Figure 5 As shown, the filter assembly includes a fine filter element 50 and a coarse filter element 40. The fine filter element 50 includes an outer filter cylinder 51 and a bottom mounting plate 55, which together form a filter chamber 45. The coarse filter element 40 is disposed within the filter chamber 45, with its top end forming the top of the filter chamber 45. The bottom mounting plate 55 has an opening to form a flow channel 411. Through the fine filter element 50 and the coarse filter element 40, multi-stage filtration can be achieved, which is beneficial for improving the collection of residues in the water flow and enhancing the cleaning effect.

[0108] In one possible implementation, the slag collection port 451 is located at the top of the coarse filter element 40.

[0109] In this example, the coarse filter element 40 and the fine filter element 50 form a filtrate filtration cavity 54 within the filter cavity 45. The top of the coarse filter element 40 forms the top of the filter cavity 45, and the top of the filter cavity 45 has a sludge collection port 451.

[0110] The filter base plate 30 is movably positioned between a first position where the flow channel 411 is closed and a second position where the flow channel 411 is open. When the filter base plate 30 is in the first position, the residue is collected inside the filter assembly. When the filter base plate 30 is in the second position, at least a portion of the residue inside the filter assembly is discharged to the drain outlet 13 through the flow channel 411.

[0111] This invention provides a slag collection device that uses a water vortex formed by an impeller 22 within the water passage chamber 11 to continuously flush away residue adhering to the surface of the filter assembly. This achieves a self-cleaning effect, prevents clogging of the filter pores, and improves the return water speed of the spray arm's circulating water. Furthermore, the filter assembly has a flow channel 411 at its bottom for residue passage. The filter base plate 30 is movable between a first position where the flow channel 411 is closed and a second position where it is open, allowing the flow channel 411 to switch between open and closed states. When the filter base plate 30 is in the first position, the flow channel 411 is closed, and residue is collected into the filter chamber 45 of the filter assembly with the water flow, achieving residue collection. When the filter base plate 30 is in the second position, the flow channel 411 is open, and at least some residue is quickly discharged from the dishwasher with the water flow, solving the technical problem of difficulty in effectively discharging residue during dishwasher operation and making slag removal more convenient.

[0112] In one possible implementation, the filter assembly includes a fine filter element 50 and a coarse filter element 40, enabling multi-stage filtration. This improves the collection of residues in the water flow and enhances the cleaning effect. The pore size of the fine filter element 50 is smaller than that of the coarse filter element 40.

[0113] The inner diameter of the clearance space 224 is larger than the outer diameter of the filter base plate 30, which ensures that the filter base plate 30 can move downward into the clearance space 224 without interference, which helps to reduce the overall height.

[0114] In one possible implementation, the fine filter element 50 and the coarse filter element 40 may be made of plastic material, and the filter base plate 30 may be made of metal material with an anti-rust coating on the outer surface.

[0115] In one possible implementation, the filter base plate 30, the fine filter element 50, and the coarse filter element 40 all have filter holes, the diameter of the filter holes in the filter base plate 30 is smaller than the minimum diameter of the filter holes in the coarse filter element 40, and the diameter of the filter holes in the filter base plate 30 is greater than or equal to the minimum diameter of the filter holes in the fine filter element 50.

[0116] In this filter assembly, the pore size of the filter base plate 30 is smaller than the minimum pore size of the coarse filter element 40, while the pore size of the filter base plate 30 is greater than or equal to the minimum pore size of the fine filter element 50. This is because the filter assembly is a multi-stage filtration structure. To improve the filtration efficiency of the filter assembly, water flow is allowed to pass quickly through the pores of the coarse filter element 40, which quickly intercepts larger particles of residue, while the coarse filter element 40 intercepts smaller particles of residue. The filter base plate 30, however, is a single-stage filtration system. The pore size of the filter base plate 30 is between the minimum pore size of the coarse filter element 40 and the minimum pore size of the fine filter element 50. This allows the filter base plate 30 to effectively trap small particles of residue while maintaining its filtration efficiency. It also prevents the pores of the filter base plate 30 from becoming clogged due to excessively small pore sizes, thus balancing residue interception and filtration flow efficiency, ensuring a stable and efficient filtration operation.

[0117] In one possible implementation, the fine filter element 50 can be installed in the water passage cavity 11 by means of snap-fit. For example, at least two elastic snaps are symmetrically provided on the upper end of the outer side wall of the fine filter element 50, and the inner wall of the top of the water passage cavity 11 is provided with a groove that matches the elastic snaps. By snapping the elastic snaps into the grooves, the fine filter element 50 can be detachably installed; or, refer to Figure 2 and Figure 19As shown, the inner wall of the top of the water passage cavity 11 is provided with a first fastening part 17, and the top of the outer wall of the fine filter element 50 is provided with a second fastening part 56. By fastening the second fastening part 56 to the first fastening part 17, the fine filter element 50 can be detachably installed.

[0118] In one possible implementation, the fine filter element 50 can be installed in the water passage cavity 11 by means of threaded engagement. For example, an external thread is provided at the upper end of the outer side wall of the fine filter element 50, and an internal thread is provided at the inner wall of the top of the water passage cavity 11, thereby realizing that the fine filter element 50 can be detachably installed in the water passage cavity 11 by means of threaded engagement.

[0119] In one possible implementation, the outer filter cartridge 51 and the bottom mounting plate 55 can be a single, integrally formed structure. The side wall of the outer filter cartridge 51 has multiple filter holes to allow water to flow through and to intercept residue.

[0120] An opening is made in the center of the bottom mounting plate 55 to form a flow channel 411. When the filter bottom plate 30 is in the first position where the flow channel 411 is closed, the residue and water flow enter the coarse filter element 40. After primary filtration by the coarse filter element 40, larger residue particles are filtered out and remain inside the coarse filter element 40, while fine residue enters the dirt-holding chamber 54 with the water flow. The fine filter element 50 filters out the fine residue particles, thereby effectively filtering out the residue mixed in the water flow, which is beneficial to improving the washing effect.

[0121] In one possible implementation method, refer to Figure 4 and Figure 5 As shown, the coarse filter element 40 is the first filter cylinder 41, the filter base plate 30 is the first filter base plate 31, the first filter cylinder 41 is detachably fixed in the filter chamber 45, and the first filter base plate 31 is movably arranged relative to the first filter cylinder 41 along the depth direction of the water tank 10.

[0122] When the first filter base plate 31 is in the first position, the first filter base plate 31 abuts against the bottom end of the bottom mounting plate 55 to close the flow channel 411; when the first filter base plate 31 is in the second position, the first filter base plate 31 disengages from the bottom end of the bottom mounting plate 55 to open the flow channel 411.

[0123] In this example, the first filter cartridge 41 is detachably fixed inside the filter chamber 45. The first filter base plate 31 is movably set relative to the first filter cartridge 41 along the depth direction of the water tank 10, so that the flow channel 411 can switch between the open and closed states.

[0124] When the first filter base plate 31 moves away from the first filter cylinder 41 along the depth direction of the water tank 10, that is, when the first filter base plate 31 moves downward, the first filter base plate 31 switches from the first position to the second position. When the first filter base plate 31 moves closer to the first filter cylinder 41 along the depth direction of the water tank 10, that is, when the first filter base plate 31 moves upward, the first filter base plate 31 switches from the second position to the first position.

[0125] In one possible implementation, the first filter cartridge 41 can be fixed to the filter chamber 45 by threaded engagement. For example, an external thread is provided on the outer circumferential surface of the bottom end of the first filter cartridge 41, and an internal thread is provided on the inner wall of the central hole of the bottom mounting plate 55. This allows the first filter cartridge 41 to be detachably fixed to the filter chamber 45 by threaded engagement, facilitating quick disassembly and installation, and convenient cleaning and replacement when manual cleaning or replacement of the coarse filter element 40 is required by rotating it.

[0126] In one possible implementation method, refer to Figure 4 and Figure 5 As shown, when the filter base plate is in the second position, the filter base plate 30 and the base plate 221 are spaced apart along the depth direction of the water tank 10, that is, the distance between the filter base plate 30 and the base plate 221 along the depth direction of the water tank 10 is greater than 0, which avoids contact and does not affect the drainage efficiency.

[0127] The distance between the filter base plate 30 and the chassis 221 provides room for the lifting and lowering movement of the filter base plate 30. In addition, the distance between the filter base plate 30 and the chassis 221 can prevent the filter base plate 30 from contacting the chassis 221, and avoid friction damage caused by contact with the filter base plate 30 when the impeller 22 rotates. This avoids contact without affecting the drainage efficiency.

[0128] In one possible implementation, the first filter cartridge 41 can also be fixed to the filter chamber 45 by a snap-fit ​​mechanism. For example, a snap-fit ​​is provided on the outer circumferential surface of the bottom end of the first filter cartridge 41, and a groove that mates with the snap-fit ​​is provided on the inner wall of the central hole of the bottom mounting plate 55. By snapping the snap-fit ​​into the groove, the first filter cartridge 41 is fixed to the filter chamber 45. This facilitates quick disassembly and replacement of the coarse filter element 40.

[0129] In one possible implementation, the first filter cartridge 41 may be cylindrical, with a large filter hole at the bottom, so that the bottom of the first filter cartridge 41 itself has a certain interception effect on large pieces of residue such as bones, preventing large pieces of residue such as bones from falling into the drive pump 20 and affecting the operation of the drive pump 20.

[0130] In one possible implementation, the top of the first filter cartridge 41 has an outward flange 43, which abuts against the inner wall of the outer filter cartridge 51. The outward flange 43 has a plurality of filter holes, and the coarse filter element 40 and the fine filter element 50 form a filtration cavity 54. The outward flange 43 covers the top of the filtration cavity 54.

[0131] In one possible implementation, the outer flange 43 is connected to a handle 423, which allows the user to easily remove the first filter cartridge 41 and the first filter base plate 31 from the fine filter element 50 by pulling the handle 423.

[0132] The first filter cylinder 41 and the first filter base plate 31 have multiple filter holes to allow water to pass through. Both the first filter cylinder 41 and the first filter base plate 31 can intercept residue.

[0133] Water flows into the filter chamber 45 formed inside the first filter cylinder 41 through the slag collection port 451 at the top of the first filter cylinder 41. When the first filter base plate 31 is in the first position, it abuts against the bottom end of the bottom mounting plate 55 to close the flow passage 411. At this time, water can flow out of the filter chamber 45 through the filter holes opened in the first filter cylinder 41 and the first filter base plate 31. Large particles of residue are intercepted in the filter chamber 45, achieving primary filtration.

[0134] When the first filter base plate 31 is in the second position, the first filter base plate 31 is detached from the bottom end of the bottom mounting plate 55, and the flow channel 411 is opened. Under the action of the drive pump 20, at least part of the residue collected in the filter chamber 45 can be discharged through the flow channel 411. The residue that enters the filtrate chamber 54 can be discharged from the flow channel 411 with the water flow and discharged into the sewer with the water flow. This can effectively reduce the amount of manual processing of residue, and even eliminate the need for manual cleaning of residue, thus reducing the problem of secondary pollution of tableware caused by residue. Large pieces of residue such as bones intercepted inside the first filter cylinder 41 need to be manually cleaned by the user.

[0135] In one possible implementation method, refer to Figure 5 and Figure 6 As shown, the first filter base plate 31 has a first guide portion 311, and the first filter cylinder 41 has a second guide portion 412. One of the second guide portion 412 and the first guide portion 311 is a guide ring, and the other of the second guide portion 412 and the first guide portion 311 is a guide post. The guide post is slidably disposed inside the guide ring.

[0136] The guide ring has a guide hole at its center. The shape of the guide hole is the same as the cross-sectional shape of the guide post. The inner diameter of the guide ring is matched with the outer diameter of the guide post. The guide ring guides the sliding of the guide post. The guide post is slidably set inside the guide ring. When the first filter base plate 31 moves, it can effectively prevent the first filter base plate 31 from getting stuck or misaligned, ensuring the smoothness and reliability of the movement of the first filter base plate 31 between the first position and the second position.

[0137] In one possible implementation, the first guide portion 311 is a guide post, and the second guide portion 412 is a guide ring. The guide post can be a columnar structure protruding from the first filter base plate 31 along the depth direction of the water tank 10, and the guide post is located on the side of the first filter base plate 31 facing the first filter cylinder 41. The edge of the guide ring can be connected to the inner wall of the first filter cylinder 41 by at least one first connecting rib 413. Of course, the number of first connecting ribs 413 can be two, three or more, and two, three or more are evenly distributed along the periphery of the guide ring along the first connecting ribs 413 to improve the stability of the guide ring.

[0138] In another possible implementation, the first guide portion 311 is a guide ring, and the second guide portion 412 is a guide post. The guide ring can be fixed to the center of the first filter base plate 31, and the guide post can be a columnar structure extending downwards along the depth direction of the water tank 10 towards the first filter base plate 31. The top edge of the guide post can be connected to the inner wall of the first filter cylinder 41 by at least one first connecting rib 413. Of course, the number of first connecting ribs 413 can be two, three, or more, and the two, three, or more ribs are evenly distributed along the periphery of the guide post to improve the stability of the guide post.

[0139] The center of the guide ring is a guide hole that guides the movement of the guide column. The shape of the guide hole is the same as the cross-sectional shape of the guide column. The inner diameter of the guide ring is matched with the outer diameter of the guide column. The guide ring forms a limiting constraint on the sliding trajectory of the guide column. By sliding the guide column inside the guide ring, it can effectively prevent the first filter base plate 31 from getting stuck or misaligned when it moves, so that the first filter base plate 31 can move freely up and down within a certain range, ensuring the smoothness and reliability of the movement of the first filter base plate 31.

[0140] In one possible implementation, the guide post can be a plastic component.

[0141] In one possible implementation method, refer to Figure 5 and Figure 6As shown, the end of the guide post has a limiting part 313. When the first filter base plate 31 is in the second position, the limiting part 313 abuts against the guide ring. This allows the limiting part 313 to limit the movement of the first filter base plate 31, preventing the first guide part 311 of the first filter base plate 31 from disengaging from the second guide part 412 of the first filter cylinder 41.

[0142] In one possible implementation, the limiting part 313 is located at one end of the guide post. The limiting part 313 includes at least two elastic claws, which are arranged at intervals around the central axis of the guide post. There is a deformation space between the at least two elastic claws, so that when the guide post is fitted into the guide ring, the limiting part 313 can deform into the deformation space under the radial compression of the guide ring, causing the outer peripheral contour dimension of the limiting part 313 to shrink, thereby reducing the assembly resistance between the guide post and the guide ring and realizing the quick fitting and engagement of the two.

[0143] After the guide post is fully fitted into the guide ring, the limiting part 313 is released from the radial compression constraint of the guide ring. The limiting part 313 returns to its initial state based on its own elastic restoring force. After the outer peripheral contour dimension of the limiting part 313 is reset, it forms an axial limiting fit with the guide ring, thereby preventing the guide post from coming out of the guide ring in the opposite direction of assembly.

[0144] In other possible implementations, the limiting part 313 may also include a limiting screw, with the screw head abutting against the guide ring, so that the limiting part 313 can limit the movement of the first filter base plate 31.

[0145] In one possible implementation method, refer to Figure 7 , Figure 8 and Figure 9 As shown, the coarse filter element 40 is the second filter cylinder 42, the filter base plate 30 is the second filter base plate 32, the second filter cylinder 42 is movably and vertically disposed in the filter chamber 45, and the second filter base plate 32 is located below the second filter cylinder 42 and is fixedly connected to the second filter cylinder 42.

[0146] In this example, the coarse filter element 40 and the fine filter element 50 form a sludge-retaining cavity 54, and a separation cavity is formed inside the second filter cylinder 42. Both the sludge-retaining cavity 54 and the separation cavity formed inside the second filter cylinder 42 are located within the filter cavity 45. Because the second filter cylinder 42 is movable, the filter cavity 45 becomes a floating cavity. The separation cavity is used to filter out large particles of residue, and the sludge-retaining cavity 54 is used to filter out small and medium-sized particles of residue.

[0147] refer to Figure 9 As shown, when the second filter base plate 32 is in the first position, the second filter base plate 32 abuts against the bottom end of the bottom mounting plate 55 to close the flow channel 411; Reference Figure 8As shown, when the second filter base plate 32 is in the second position, the second filter base plate 32 is disengaged from the bottom end of the bottom mounting plate 55 to open the flow channel 411.

[0148] In this example, the second filter base plate 32 is fixedly connected to the second filter cylinder 42. The flow channel 411 can switch between the open and closed states by the second filter base plate 32 and the second filter cylinder 42 moving together along the depth direction of the water tank 10.

[0149] In one possible implementation, a gap exists between the second filter base plate 32 and the second filter cylinder 42 along the depth direction of the water tank 10 to allow water flow and residue to pass through; or, the end of the second filter cylinder 42 near the second filter base plate 32 has a notch to allow water flow and residue to pass through.

[0150] refer to Figure 9 As shown, the second filter base plate 32 abuts against the bottom end of the bottom mounting plate 55, thereby closing the flow channel 411. (Refer to...) Figure 8 As shown, when the second filter base plate 32 moves from the first position to the second position, the second filter base plate 32 no longer abuts against the bottom end of the bottom mounting plate 55, so that the flow channel 411 is opened.

[0151] In one possible implementation method, refer to Figure 7 , Figure 8 and Figure 9 As shown, the second filter base plate 32 has a fixing post 321, which protrudes from the second filter base plate 32 along the depth direction of the water tank 10. The top of the fixing post 321 has a fixing buckle 322. (Reference) Figure 7 , Figure 9 and Figure 10 As shown, the second filter cylinder 42 has a fixing sleeve 424 inside. The outer circumferential surface of the fixing sleeve 424 can be connected to the inner wall of the second filter cylinder 42 by at least one second connecting rib 422. By fixing the fixing sleeve 424 to the fixing buckle 322, the second filter base plate 32 and the second filter cylinder 42 are fixedly connected.

[0152] In one possible implementation, the number of second connecting ribs 422 may be two, three or more. The two, three or more second connecting ribs 422 are evenly distributed along the axial direction of the fixing sleeve 424 to improve the stability of the fixing sleeve 424 in the second filter cylinder 42, thereby ensuring the stability of the fixed connection between the second filter base plate 32 and the second filter cylinder 42.

[0153] refer to Figure 8As shown, when the second filter base plate 32 and the second filter cylinder 42 move together away from the fine filter element 50 along the depth direction of the water tank 10, that is, when the second filter base plate 32 and the second filter cylinder 42 move downward along the depth direction of the water tank 10, the second filter base plate 32 switches from the first position to the second position. (Reference) Figure 9 As shown, when the second filter base plate 32 and the second filter cylinder 42 move together along the depth direction of the water tank 10 towards the fine filter element 50, that is, when the second filter base plate 32 and the second filter cylinder 42 move together upward along the depth direction of the water tank 10, the second filter base plate 32 switches from the second position to the first position.

[0154] The second filter cylinder 42 and the second filter base plate 32 have multiple filter holes to allow water to pass through. Both the second filter cylinder 42 and the second filter base plate 32 can intercept residue.

[0155] refer to Figure 9 As shown, when the second filter base plate 32 is in the first position, the flow channel 411 is closed. At this time, the water can flow out of the filter chamber 45 through the filter holes opened in the second filter cylinder 42 and the second filter base plate 32. Large particles of residue are intercepted in the filter chamber 45, thus achieving primary filtration.

[0156] refer to Figure 8 and Figure 11 As shown, when the second filter base plate 32 is in the second position, the flow channel 411 is opened. Under the action of the drive pump 20, at least part of the residue collected in the filter chamber 45 is discharged from the flow channel 411 and discharged into the sewer with the water flow. The residue that enters the sludge chamber 54 can be discharged from the flow channel 411 with the water flow and discharged into the sewer with the water flow, which can effectively reduce the amount of manual processing of residue, or even eliminate the need for manual cleaning of residue, thus reducing the problem of secondary pollution of tableware caused by residue. However, large pieces of residue such as bones intercepted inside the second filter cylinder 42 need to be manually cleaned by the user.

[0157] In one possible implementation method, refer to Figure 8 and Figure 9 As shown, the outer peripheral surface of the second filter cylinder 42 is provided with a limiting protrusion 421. The fine filter element 50 also includes an inner filter cylinder 52, which is located inside the outer filter cylinder 51. The bottom of the inner filter cylinder 52 is connected to the outer filter cylinder 51 through a bottom mounting plate 55.

[0158] refer to Figure 9 As shown, when the second filter base plate 32 is in the first position, there is a distance H between the limiting protrusion 421 and the top end of the inner filter cylinder 52, where H > 0; Reference Figure 8As shown, when the second filter base plate 32 is in the second position, the limiting protrusion 421 abuts against the top of the inner filter cylinder 52, so that the second filter cylinder 42 is located in the inner filter cylinder 52. The distance H between the limiting protrusion 421 and the top of the inner filter cylinder 52 is the distance of the second filter cylinder 42's downward movement.

[0159] The second filter base plate 32 abuts against the bottom end of the bottom mounting plate 55 to restrict the upward movement of the second filter base plate 32 beyond the first position, thereby achieving axial limitation of the second filter base plate 32 at the first position and ensuring that the flow channel 411 is in a closed state.

[0160] The limiting protrusion 421 may be arranged around the outer periphery of the second filter cylinder 42, or there may be at least two limiting protrusions 421 distributed along the outer periphery of the second filter cylinder 42. For example, the number of limiting protrusions 421 may be three, four or more, and the three, four or more limiting protrusions 421 may be evenly distributed along the outer periphery of the second filter cylinder 42.

[0161] In one possible implementation, the limiting protrusion 421 may be integrally formed into the second filter cartridge 42.

[0162] The second filter cylinder 42 abuts against the top of the inner filter cylinder 52 through the limiting protrusion 421, and the second filter cylinder 42 forms an axial abutment with the top of the inner filter cylinder 52 through the limiting protrusion 421, so as to restrict the second filter base plate 32 from moving downward past the second position, thereby realizing the axial limiting of the second filter base plate 32 in the second position and ensuring that the flow channel 411 is in the open state.

[0163] In one possible implementation, the second filter cartridge 42, the outer filter cartridge 51, and the inner filter cartridge 52 all have filter holes to allow water to pass through. The filter holes can be rectangular, circular, rhomboid, polygonal, etc.

[0164] In one possible implementation, the bottom mounting plate 55 is in a different shape, and the outer filter cartridge 51, the inner filter cartridge 52 and the bottom mounting plate 55 can be an integrally formed structure, with the bottom mounting plate 55 used to fix the inner filter cartridge 52.

[0165] In one possible implementation method, refer to Figure 8 As shown, the distance the second filter base plate 32 moves up or down is H1, the distance between the limiting protrusion 421 and the bottom of the second filter cylinder 42 is H2, and the height of the inner filter cylinder 52 is H3. Wherein, H1≤H2, so that when the second filter base plate 32 is in the first position, the bottom end of the second filter cylinder 42 is located inside the inner filter cylinder 52.

[0166] In this example, refer to Figure 8As shown, the distance the second filter base plate 32 moves upward is H1, and the distance between the limiting protrusion 421 and the bottom of the second filter cylinder 42 is H2. H1≤H2, that is, the distance the second filter base plate 32 moves upward does not exceed the distance H2 between the limiting protrusion 421 and the bottom of the second filter cylinder 42. When the distance H1 of the second filter base plate 32 moves upward reaches its maximum, when the second filter base plate 32 is in the first position, the bottom of the second filter cylinder 42 will still not exceed the top of the inner filter cylinder 52, thereby preventing a gap from appearing between the top of the inner filter cylinder 52 and the bottom of the second filter cylinder 42 along the depth direction of the water tank 10. This ensures that water flow and residue from inside the second filter cylinder 42 to the filter chamber 54 must pass through the filtration action of the inner filter cylinder 52, thus ensuring the filtration effect on residue.

[0167] In one possible implementation, the distance between the limiting protrusion 421 and the bottom of the second filter cylinder 42 is H2, and the height of the inner filter cylinder 52 is H3, where H2≤H3, so that when the second filter base plate 32 is in the second position, the bottom end of the second filter cylinder 42 is located inside the inner filter cylinder 52.

[0168] When the second filter base plate 32 is in the second position, the limiting protrusion 421 abuts against the top of the inner filter cylinder 52. By designing H2≤H3, that is, the distance H2 between the limiting protrusion 421 and the bottom of the second filter cylinder 42 is always less than or equal to the height H3 of the inner filter cylinder 52, it is ensured that the bottom of the second filter cylinder 42 never exceeds the lower end of the inner filter cylinder 52, thereby preventing the bottom end of the second filter cylinder 42 from extending beyond the lower end of the inner filter cylinder 52 and causing the bottom end of the second filter cylinder 42 to affect the discharge of residue.

[0169] In one possible implementation, the inner filter cartridge 52 has filter holes, the diameter of which is greater than or equal to the diameter of the filter holes of the second filter cartridge 42.

[0170] When the second filter base plate 32 is in the first position, the inner filter cylinder 52 performs primary filtration below the second filter cylinder 42. The filter holes of the inner filter cylinder 52 have a large aperture, which allows water and fine residue to pass through quickly while intercepting larger residue particles, preventing fine residue from clogging the filter holes of the inner filter cylinder 52 and ensuring filtration efficiency. The filter holes of the outer filter cylinder 51 perform secondary filtration, intercepting even finer residue, achieving staged filtration, thus balancing filtration effect and flow rate.

[0171] In one possible implementation, the aperture of the filter holes of the inner filter cartridge 52 is greater than or equal to the aperture of the filter holes of the second filter cartridge 42, so that both small and large particles of residue can pass through the filter holes of the inner filter cartridge 52, which helps to collect the residue into the filtrate cavity 54 formed between the coarse filter element 40 and the fine filter element 50.

[0172] In one possible implementation, the aperture of the filter holes in the inner filter cartridge 52 is greater than or equal to the aperture of the filter holes in the second filter cartridge 42. This helps ensure rapid flow in the inner filter cartridge 52, allowing it to trap larger residues inside, while simultaneously relying on the filter holes in the outer filter cartridge 51 to achieve fine residue trapping, thus ensuring filtration efficiency.

[0173] In one possible implementation, the aperture of the filter holes in the inner filter cylinder 52 is larger than that in the second filter cylinder 42. This is so that the residue entering the filtrate chamber 54 can be recirculated back into the inner filter cylinder 52 through the filter holes under the action of the water vortex, and then discharged through the flow channel 411, thereby achieving efficient discharge of residue, reducing the accumulation of residue in the filtrate chamber 54, and effectively solving the clogging problem.

[0174] In one possible implementation, the second filter cartridge 42 may be cylindrical, with a large filter hole at the bottom, so that the bottom of the second filter cartridge 42 itself has a certain interception effect on large pieces of residue such as bones, preventing large pieces of residue such as bones from falling into the drive pump 20 and affecting the operation of the drive pump 20.

[0175] In one possible implementation method, refer to Figure 2 , Figure 7 , Figure 8 , Figure 15 As shown, the filter base plate 30 is movably and vertically positioned between the filter assembly and the chassis 221. The height of the filter base plate 30's vertical movement is H1. The side of the chassis 221 facing away from the blades 222 has a distance L between it and the inner bottom wall of the water passage cavity 11. H1 / L satisfies: 20≤H1 / L≤25.

[0176] The height of the filter base plate 30's lifting movement is H1, which means the maximum distance the filter base plate 30 can lift is H1. By controlling H1 / L, when the height H1 of the filter base plate 30's lifting movement is fixed, the distance L between the side of the chassis 221 facing away from the blades 222 and the inner bottom wall of the water passage cavity 11 is minimized as much as possible, thereby saving the occupied height space. It is also necessary to ensure that the distance L is greater than 0, thereby preventing the chassis 221 from contacting the inner bottom wall of the water passage cavity 11, eliminating interference problems such as jamming and friction caused by contact, reducing hard damage between components, and ensuring that the impeller 22 can maintain a preset speed and rotate stably when rotating, ensuring the consistency of the fluid throughput per unit time.

[0177] In one possible implementation, L can be, for example, 0.5 mm or 1 mm. A smaller L helps to save height space, thereby reducing the overall height of the slag discharge device.

[0178] In one possible implementation, H1 / L can be, for example, 20, 21, 22, 23, 24, or 25. This prevents an excessively large H1 from causing the overall height of the slag collection device to be too large, while also ensuring the slag discharge efficiency of the flow channel 411.

[0179] In one possible implementation, the filter base plate 30 is a first filter base plate 31, which is movable up and down and is always located between the filter assembly and the chassis 221.

[0180] In one possible implementation, the filter base plate 30 is a second filter base plate 32, which is movable up and down and is always located between the filter assembly and the chassis 221.

[0181] In one possible implementation, when the filter base plate 30 is in the second position, the filter base plate 30 and the inner bottom wall of the clearance space 224 are spaced apart along the depth direction of the water tank 10, thereby effectively preventing the filter base plate 30 from contacting the inner bottom wall of the clearance space 224, eliminating interference problems such as jamming and friction caused by contact, reducing hard damage between components, allowing the impeller 22 to maintain a preset speed and rotate stably, ensuring the consistency of fluid throughput per unit time, ensuring that the rotation of the impeller 22 is not affected, and ensuring the service life of the impeller 22 and the filter base plate 30.

[0182] In one possible implementation method, refer to Figure 7 , Figure 8 and Figure 9 As shown, the top of the second filter cylinder 42 has an outward flange 43, which abuts against the inner wall of the outer filter cylinder 51. The outward flange 43 has multiple filter holes, and the coarse filter element 40 and the fine filter element 50 form a dirt-filtering cavity 54. The outward flange 43 covers the top of the dirt-filtering cavity 54.

[0183] In one possible implementation, the outer flange 43 is tapered, with one end of the outer flange 43 connected to the second filter cylinder 42 being lower and the edge of the outer flange 43 being higher, so that the outer flange 43 can guide the water flow and residue toward the sludge collection port 451.

[0184] In one possible implementation, the outer flange 43 is connected to a handle 423, which may be made of metal or plastic. The handle 423 may be arched or other shapes for the user to grip and apply force. The user can easily remove the second filter cartridge 42 and the second filter base plate 32 from the fine filter element 50 by pulling the handle 423.

[0185] In one possible implementation method, refer to Figure 2 and Figure 4 As shown, the slag collection device also includes an electromagnetic component 60, which is disposed on the bottom wall of the water tank 10. At least a portion of the filter base plate 30 is a magnetic component, and the filter base plate 30 is within the magnetic field range generated by the electromagnetic component 60, so that the filter base plate 30 moves up and down under the action of the changing magnetic field generated by the electromagnetic component 60. The magnetic force between the filter base plate 30 and the electromagnetic component 60 drives the filter base plate 30 to move along the depth direction of the water tank 10.

[0186] In one possible implementation, the electromagnetic element 60 is disposed on the outer or inner bottom wall of the water tank 10. For example, the electromagnetic element 60 may be fixed to the outer or inner bottom wall of the water tank 10 by a bracket. At least part of the filter base plate 30 is a magnetic element. The filter base plate 30 is within the magnetic field range generated by the electromagnetic element 60. The magnetic force between the filter base plate 30 and the electromagnetic element 60 is used to drive the filter base plate 30 to move along the depth direction of the water tank 10.

[0187] In one possible implementation, the filter base plate 30 is a magnetic component. When the filter base plate 30 is within the magnetic field range generated by the electromagnetic component 60, the filter base plate 30 is rapidly magnetized, forming a temporary magnet.

[0188] In one possible implementation, the electromagnetic component 60 is an electromagnetic coil. When energized, the electromagnetic coil generates a magnetic field. The filter base plate 30 contains a metallic magnetic material. The magnetic poles of the ends of the filter base plate 30 and the electromagnetic coil that are close to each other are the same. Based on the repulsion between the like magnetic poles, when the repulsive force exceeds the weight of the filter base plate 30, the filter base plate 30 will overcome gravity and move upwards. The electromagnetic field generated by the energized electromagnetic coil can be quickly adjusted via a current signal, eliminating the need for intermediate mechanical transmission and enabling high-precision position and speed control.

[0189] refer to Figure 4 As shown, after the residue collection is complete, the electromagnetic coil is de-energized, and the filter base plate 30 moves downward to the second position under its own power. The flow channel 411 opens, and the food residue settles freely, falling into the center of the impeller 22. The drive motor 21 is activated to drain the water for a short time, discharging some of the collected residue. Subsequently, the drain valve and drive motor 21 are closed, and a specified amount of water is added to the water tank 10 to replenish the water volume. At this time, the food residue in the water tank 10 is discharged, the overall water is cleaner, and the washing process continues.

[0190] In one possible implementation, the outer wall of the water tank 10 also has a water inlet 12, which is connected to the side wall of the water inlet chamber 111 and is used to connect to the washing pump. The water inlet 12 can be connected to the water inlet chamber 111 through a drainage channel 15. The water inlet 12 is connected to the water inlet pipe of the washing pump. Under the action of the washing pump, water flows through the water inlet 12 into the spray arm, providing circulating water supply to the spray arm.

[0191] In one possible implementation, along the depth direction of the water tank 10, the impeller 22 is located between the inlet 12 and the outlet 13, so that the drive pump 20 assists the washing pump in feeding water into the inlet 12.

[0192] In one possible implementation method, refer to Figure 11 As shown, a water inlet 16 is also provided on the side wall of the water tank 10. The water inlet 16 is connected to the water inlet pipe of the dishwasher and is used to supply water for spraying the spray arm.

[0193] In one possible implementation method, refer to Figure 7 As shown, the filter assembly has a filter chamber 45 inside, and the top of the filter chamber 45 has a slag collection port 451 that communicates with the filter chamber 45.

[0194] In one possible implementation method, refer to Figure 7 As shown, the slag collection device also includes a baffle assembly 70, which is disposed at the slag collection port 451. The baffle assembly 70 is configured to open the slag collection port 451 when water flows into the filter chamber 45 through the slag collection port 451 to collect the residue into the filter chamber 45, and to close the slag collection port 451 when water flows out of the filter chamber 45 through the slag collection port 451 to prevent the residue in the filter chamber 45 from escaping through the slag collection port 451.

[0195] The present invention provides a slag collection device by setting a baffle assembly 70 at the slag collection port 451. Under the impact of the water flow above the slag collection port 451, the baffle assembly 70 opens the slag collection port 451, and the residue enters the filter chamber 45 inside the filter assembly with the water flow, thereby achieving effective collection of the residue. When the water flows out of the filter chamber 45 through the slag collection port 451, the baffle assembly 70 closes the slag collection port 451 to prevent the residue collected in the filter chamber 45 from flowing back out of the slag collection port 451 and affecting the cleaning effect.

[0196] In one possible implementation method, refer to Figure 13 and Figure 14 As shown, the baffle assembly 70 is rotatably disposed at the slag collection port 451. The baffle assembly 70 rotates under the impact of the water flow flowing into the filter chamber 45 through the slag collection port 451, so that the slag collection port 451 opens.

[0197] In one possible implementation, the baffle assembly 70 is also used to rotate when the water flow into the filter chamber 45 through the slag collection port 451 stops, so as to close the slag collection port 451. The baffle assembly 70 can rotate within a certain range, and by adjusting the rotation of the baffle assembly 70, the blocking range of the slag collection port 451 can be precisely changed, so as to achieve flexible control of the opening and closing state of the slag collection port 451.

[0198] In one possible implementation, when the washing pump is operating, the baffle assembly 70 rotates to open the slag collection port 451. During operation, the water flow above the slag collection port 451 exerts a continuous impact force on the baffle assembly 70, causing it to rotate and open the slag collection port 451. Water and slag then pass through the slag collection port 451 into the filter chamber 45, where the slag is collected. The filtered water is then circulated to rinse the dishes, removing any remaining slag.

[0199] In one possible implementation, the slag collection device further includes a drive pump 20, which includes an impeller 22 rotatably disposed inside the water passage chamber 11. A filter assembly is located above the impeller 22, and the angle between the rotational axis of the impeller 22 and the depth direction of the water tank 10 is less than or equal to 30°, so as to form a water vortex in the water passage chamber 11. The water vortex guides water and residue from the slag collection port 451 into the filter chamber 45. The filter assembly allows water to flow out through the periphery and bottom of the filter chamber 45 and collects residue into the filter chamber 45. When the washing pump and the drive pump 20 are working simultaneously, the baffle assembly 70 rotates to open the slag collection port 451.

[0200] When the washing pump and the drive pump 20 are working simultaneously, the water flow above the slag collection port 451 has a continuous impact force on the baffle assembly 70, causing the baffle assembly 70 to rotate so that the slag collection port 451 opens. Water and residue enter the filter chamber 45 through the slag collection port 451. The residue is collected in the filter chamber 45, and the water is discharged after being filtered.

[0201] In one possible implementation, when the dishwasher is draining, the baffle assembly 70 rotates under the impact of the water flow into the filter chamber 45 through the slag collection port 451, thereby opening the slag collection port 451. This reduces the space occupied by the baffle assembly 70 within the slag collection port 451, ensuring the smooth flow of residue into the filter chamber 45 through the slag collection port 451. When the dishwasher stops draining, the water flow into the filter chamber 45 through the slag collection port 451 stops, the impact force of the water flow above the slag collection port 451 on the baffle assembly 70 disappears or decreases, and the baffle assembly 70 rotates to close the slag collection port 451.

[0202] In addition, the baffle assembly 70 uses the impact force of the water flow to drive the baffle assembly 70 to rotate, thereby realizing the automatic opening and opening degree adjustment of the slag collection port 451. There is no need to set up an additional manual drive structure or electric drive device, which simplifies the overall structural design, while greatly reducing the frequency of manual intervention and operating costs, and improving the degree of automation and ease of use.

[0203] The rotating baffle assembly 70 has a compact structure and can be directly hinged to the slag collection port 451, eliminating the need for large-scale modifications to the existing dishwasher structure, thus reducing modification costs and lowering the barrier to entry for use.

[0204] In one possible implementation method, refer to Figure 13 and Figure 14 As shown, the baffle assembly 70 includes two baffles 71, which are disposed opposite to each other on the inner wall of the filter chamber 45. The baffle assembly 70 has a first state in which the two baffles 71 are relatively flattened, and a second state in which the two baffles 71 are relatively folded into the filter chamber 45.

[0205] When the baffle assembly 70 is in the second state, it rotates under the impact of the water flowing into the filter chamber 45 through the slag collection port 451, thereby opening the slag collection port 451. When the baffle assembly 70 is in the first state, it rotates in the opposite direction under the impact of the water flowing out of the filter chamber 45 through the slag collection port 451, thereby closing the slag collection port 451. (Reference) Figure 7 The image shows the first state where the two baffles 71 are flattened relative to each other. (Refer to...) Figure 17 The image shows the second state in which the two baffles 71 are folded toward each other into the filter chamber 45.

[0206] When the two baffles 71 are in the first state of being relatively flat, that is, when the two baffles 71 extend radially relative to each other along the filter chamber 45, the baffle assembly 70 has the largest blocking range on the slag collection port 451, the slag collection port 451 is closed, and the two baffles 71 can prevent the residue in the filter chamber 45 from flowing back upward through the slag collection port 451, thereby preventing the contamination of the washing water.

[0207] In the second state, when the two baffles 71 are folded relative to each other into the filter chamber 45, that is, when the two baffles 71 extend along the axial direction of the filter chamber 45, the slag collection port 451 is opened, the baffle assembly 70 has the smallest obstruction range on the slag collection port 451, and the water flow can pass through the slag collection port 451 from top to bottom, so that the residue can be collected into the filter chamber 45.

[0208] In one possible implementation method, refer to Figure 15 , Figure 16 , Figure 17 and Figure 18As shown, the baffle 71 includes a baffle body 711 and a connecting shaft 712. The baffle body 711 is fixed to the connecting shaft 712. The inner wall of the filter chamber 45 is provided with a connecting hole 46. Both ends of the connecting shaft 712 extend into the corresponding connecting hole 46. When the baffle assembly 70 is in the first state, the connecting shaft 712 is located between the two baffle bodies 711.

[0209] In one possible implementation, the cross-section of the slag collection port 451 is circular, and the baffle body 711 is approximately semi-circular, so that the two baffle bodies 711 can fill the cross-section of the slag collection port 451, thereby improving the blocking effect on the residue. Of course, in other possible implementations, the cross-section of the slag collection port 451 can also be rectangular, and the baffle body 711 can be approximately rectangular.

[0210] In one possible implementation, the side of the baffle body 711 can be wrapped around the outer periphery of the connecting shaft 712; of course, one side of the baffle body 711 can also be connected to the connecting shaft 712 by welding or integral molding, so that the baffle body 711 is fixed to the connecting shaft 712.

[0211] Both ends of the connecting shaft 712 extend into the corresponding connecting holes 46, thus providing end support for the connecting shaft 712. This enables stable hinged connection and precise rotation of the baffle body 711, accurately limiting the position of the connecting shaft 712 and significantly improving the installation stability of the baffle body 711, preventing problems such as offset, shaking, or jamming during rotation. Furthermore, by supporting both ends of the connecting shaft 712, the baffle body 711 rotates around the central axis of the connecting shaft 712. When the baffle body 711 is subjected to the impact force of water flow, this effectively prevents the connecting shaft 712 from bending or deforming under stress, or the connecting holes 46 from wearing out too quickly, significantly improving the structural strength and service life of the baffle assembly 70.

[0212] When the baffle assembly 70 is in the first state, the connecting shaft 712 is located between the two baffle bodies 711, that is, the two baffles 71 are installed opposite each other, which ensures that the baffles 71 can rotate smoothly and improves the blocking effect on the slag collection port 451.

[0213] In one possible implementation method, refer to Figure 16 , Figure 17 and Figure 18 As shown, the baffle assembly 70 also includes a reset member 72, which is configured to switch the baffle assembly 70 from a second state to a first state.

[0214] When the water flow reverses, the baffle assembly 70 can automatically switch from the second state to the first state under the action of the reset member 72, thereby closing the slag collection port 451 and effectively preventing sewage, odors or residue in the pipe from flowing upwards, ensuring the cleaning effect of the dishwasher's inner drum.

[0215] In one possible implementation, the reset member 72 includes a torsion spring, which includes a coil portion 721, a first torsion arm 722 and a second torsion arm 723. The first torsion arm 722 and the second torsion arm 723 extend from both ends of the coil portion 721, and there is an included angle between the first torsion arm 722 and the second torsion arm 723. At least one end of the connecting shaft 712 extends into the coil portion 721. The first torsion arm 722 is fixed to the baffle body 711. The inner wall of the filter chamber 45 also has a stop portion 47, and the second torsion arm 723 abuts against the stop portion 47.

[0216] The coil portion 721 can be formed by winding metal wire, such as iron wire. The coil portion 721 is ring-shaped, and the first torsion arm 722 and the second torsion arm 723 are respectively connected to the two ends of the coil portion 721.

[0217] In one possible implementation, the surface of the baffle body 711 has an anti-detachment portion 714, and an anti-detachment hole is provided in the anti-detachment portion 714. One end of the first torsion arm 722 is connected to the coil portion 721, and the other end of the first torsion arm 722 extends into the anti-detachment hole, thereby fixing the first torsion arm 722 to the baffle body 711.

[0218] In one possible implementation, the inner wall of the filter chamber 45 also has a stop 47, one end of the second torsion arm 723 is connected to the coil part 721, and the other end of the second torsion arm 723 abuts against the stop 47. By the second torsion arm 723 abutting against the stop 47, the position of the second torsion arm 723 remains fixed when the baffle 71 switches between the first state and the second state.

[0219] There is an angle between the first torsion arm 722 and the second torsion arm 723. When the impact force of the water flow on the baffle 71 is greater than the pre-tightening force of the reset member 72, the water flow pushes the baffle 71 to switch from the first state to the second state, and the angle between the first torsion arm 722 and the second torsion arm 723 decreases.

[0220] After assembly, the torsion spring is in a pre-compressed state, which causes the torsion spring to form a continuous reset pre-tightening force acting on the baffle 71. When the impact force of the water flow on the baffle 71 is greater than the pre-tightening force of the torsion spring, the impact force of the water flow on the baffle 71 overcomes the pre-tightening force of the torsion spring on the baffle 71, causing the baffle 71 to switch from the first state to the second state and the slag collection port 451 to open. When the impact force of the water flow disappears or is sufficiently small, the torsion spring drives the baffle 71 to switch from the second state to the first state, thereby closing the slag collection port 451.

[0221] The preload of the torsion spring keeps the baffle 71 closed when no external force is applied, achieving automatic closure of the slag collection port 451 without manual intervention, effectively preventing problems such as residue backflow and odor diffusion. Furthermore, in this application, by sleeved the torsion spring on the connecting shaft 712, the baffle 71 can be automatically reset without the need for additional drive devices such as motors or cylinders, simplifying the overall structure and reducing manufacturing costs and assembly difficulty.

[0222] In one possible implementation, a reset member 72 is fitted at both ends of each connecting shaft 712, and both ends of the connecting shaft 712 extend into the corresponding coil portion 721, thereby increasing the reset force of the baffle assembly 70.

[0223] In one possible implementation method, refer to Figure 14 As shown, the baffle 71 also includes a flexible sleeve 713, which is sleeved on the outer peripheral surface of the connecting shaft 712. The side of the baffle body 711 has a connecting leg, which passes through the flexible sleeve 713 and is connected to the connecting shaft 712. The baffle body 711 abuts against the flexible sleeve 713. This allows the flexible sleeve 713 to fill the gap between the baffle body 711 and the connecting shaft 712, and also fills the gap between the two connecting shafts 712.

[0224] In one possible implementation, the flexible sleeve 713 can be, for example, a rubber sleeve or a silicone sleeve. By fitting the flexible sleeve 713 onto the outer circumferential surface of the connecting shaft 712, an interference fit is formed between the two connecting shafts 712. During the relative flipping motion of the two baffles 71, it helps to prevent the residue collected in the filter chamber 45 from escaping through the gap between the two connecting shafts 712.

[0225] In one possible implementation, the connecting leg extends perpendicularly to the central axis of the connecting shaft 712. The connecting leg can be radially penetrating the flexible sleeve 713 along the connecting shaft 712, thereby connecting the baffle 71 to the connecting shaft 712.

[0226] In one possible implementation method, refer to Figure 1 and Figure 2 As shown, a support platform 14 is provided on the inner wall of the water tank 10. The support platform 14 divides the water passage chamber 11 into an inlet chamber 111 and an outlet chamber 112. Along the depth direction of the water tank 10, the outlet chamber 112 is arranged at the bottom of the inlet chamber 111. A connecting hole 141 is opened in the center of the support platform 14 to connect the inlet chamber 111 and the outlet chamber 112. The impeller 22 is rotatably disposed in the outlet chamber 112, and the fine filter element 50 and the coarse filter element 40 are located in the inlet chamber 111.

[0227] In one possible implementation, the bottom edge of the bottom mounting plate 55 abuts against the support platform 14, which serves to support the filter assembly.

[0228] The support platform 14 can be a protruding ridge protruding from the inner wall of the water tank 10. The center of the support platform 14 is provided with a connecting hole 141 that connects the water inlet chamber 111 and the water outlet chamber 112. The connecting hole 141 can be circular or rectangular.

[0229] Because the bottom of the filter assembly has a flow channel 411 for residue to pass through, the filter base plate 30 is movable between a first position where the flow channel 411 is closed and a second position where the flow channel 411 is open, thus switching the flow channel 411 between open and closed states. When the filter base plate 30 is in the first position, the flow channel 411 is closed, and the residue is collected into the filter chamber 45 of the filter assembly along with the water flow, achieving the effect of residue collection. When the filter base plate 30 is in the second position, the flow channel 411 is open, and at least some of the residue is quickly discharged from the dishwasher along with the water flow, solving the technical problem of difficulty in effectively discharging residue during dishwasher operation and making residue discharge more convenient.

[0230] This invention also provides a dishwasher, including the aforementioned slag collection device.

[0231] In one possible implementation method, refer to Figure 12 As shown, the dishwasher also includes an inner tank 90, a spray arm, and a flat filter screen 92. The inner tank 90 has a washing chamber 91 inside. The spray arm is rotatably disposed in the washing chamber 91 and sprays washing water onto the dishes placed in the washing chamber 91 to achieve the purpose of cleaning the dishes.

[0232] In one possible implementation, the dishwasher also includes a shelf assembly disposed within the washing chamber 91 for holding tableware.

[0233] In one possible implementation, the water tank 10 is disposed below the inner tank 90 and is fixedly connected to the lower part of the inner tank 90 by screws. The flat filter screen 92 is installed at the bottom of the inner tank 90 and has densely distributed filter holes.

[0234] This invention provides a slag collection device that, by horizontally rotating an impeller 22 at the bottom of the water passage chamber 11, creates a water vortex to clean the planar filter screen 92 and the filter assembly, achieving centralized processing of food residue. The water vortex formed by the impeller 22 within the water passage chamber 11 continuously washes away residue adhering to the surface of the filter assembly, achieving a self-cleaning effect and preventing clogging of the filter holes. This also helps improve the return water speed of the spray arm's circulating water.

[0235] During use, the user places the soiled dishes into the washing chamber 91 inside the inner tub 90 and starts the dishwasher's cleaning program, which includes a washing stage, a rinsing stage, and a drying stage. After the washing stage begins, the electromagnetic component 60 is energized to generate a directional magnetic field. The filter base plate 30 is within the magnetic field range generated by the electromagnetic component 60 and moves upward to the highest point due to the magnetic field repulsion. Water flows into the water passage chamber 11 of the water tank 10 through the water inlet 16. The washing pump is turned on, and the spray arm begins to spray water towards the dishes to rinse them, initially washing away easily washable food residue from the surface of the dishes. This residue accumulates in the flat filter screen 92 and the filter assembly.

[0236] After continuous rinsing for a period of time, most of the easily washable food residue has been removed, and the washing pump stops working. At this point, the drain valve 80 is closed, and the drive pump 20 starts working. The impeller 22 rotates, causing the water to form a vortex. Because the flow velocity is faster near the center of the vortex, according to Bernoulli's theorem, the pressure is lower near the center. Food residue accumulated on the flat filter screen 92 is drawn to the center of the vortex under the action of the pressure difference, and then enters the filter assembly through the one-way baffle, thereby isolating the food residue.

[0237] In one possible implementation, after the residue collection is complete, the drive pump 20 stops working and the washing process continues. The washing pump operates normally, and the water in the water passage chamber 11 is drawn into the inner water pipe by the washing pump for washing. At this time, a large amount of food residue is isolated in the filter assembly. The operation of the washing pump creates a significant negative pressure at the residue collection port 451. The filter base plate 30 and the filter assembly prevent food residue from entering the washing pump, thereby preventing residue from entering the inner water pipe and spray arm, reducing the problem of secondary pollution. Large particles of residue accumulate in the filter chamber 45, reducing the problem of clogging the filter holes of the flat filter screen 92 and the fine filter element 50, allowing the water flow to pass through normally for circulation filtration. The return water speed of the washing pump remains stable at all times.

[0238] In one possible implementation, after the residue collection is complete, the electromagnetic component 60 is de-energized, the filter base plate 30 descends to its lowest position, the flow channel 411 opens, and the food residue freely settles into the clearance space 224 at the center of the impeller 22. The drive motor 21 is turned on for a short period of drainage to discharge some of the collected residue. Subsequently, the drain valve 80 and the drive motor 21 are closed, and a specified amount of water is added to the water tank 10 to replenish the water volume in the water tank 10. At this time, the food residue in the water tank 10 is discharged, the overall water is cleaner, and the washing process continues.

[0239] After the washing cycle is complete, the recycled water and food residue need to be discharged from the dishwasher together. The electromagnetic component 60 is de-energized, the filter base plate 30 descends to its lowest position, the flow channel 411 opens, and the food residue freely settles into the clearance space 224 in the center of the impeller 22. The drive motor 21 is turned on to drain the water, and the drain valve 80 switches to the open state. At this time, the food residue is in the clearance space 224 in the center of the impeller 22. The residue leaves the drive pump 20 with the water flow through the clearance channel 225 of the impeller 22 and enters the drain pipe.

[0240] Because food residue accumulates highly within the filter chamber 45, it can be efficiently discharged in one go during drainage, reducing food residue residue in the inner liner 90. Once the water is completely drained, the drain valve 80 switches to the closed state, and the drive pump 20 stops working. The drain valve 80 prevents residual water in the drain pipe from flowing back into the sink 10, avoiding dampness caused by condensation on the surface of the tableware after the residual moisture in the sink 10 evaporates.

[0241] The food residue collection device and dishwasher provided by this invention can collect and isolate food residue, effectively solving the problem of residue clogging the filter holes of the filter component, ensuring the smooth circulation of water, and significantly reducing the occurrence of secondary pollution in the washing chamber 91, thereby improving the cleanliness and hygiene of the dishwashing.

[0242] The food residue collection device and dishwasher provided by this invention can achieve phased management of food residue during the entire operation of the dishwasher. First, the residue is collected and isolated through the filter component, and then it is efficiently discharged from the equipment during the drainage stage, which solves the problem of food residue being difficult to discharge. It can cut off the secondary pollution caused by the residue from the transmission path and improve the cleanliness and hygiene safety of the dishwashing.

[0243] The slag collection device and dishwasher provided by the present invention can be set with a filter self-cleaning program. When used for non-washing purposes, a certain amount of tap water enters, the drain valve 80 is closed, and the pump 20 is driven to work continuously for a certain period of time to collect the residue into the filter assembly. Then, the drain valve 80 is opened, all the water in the dishwasher's water passage chamber 11 is discharged, and the drain valve 80 is closed.

[0244] It should be noted that the numerical values ​​and ranges involved in this application are approximate values. Due to the influence of the manufacturing process, there may be a certain range of errors, which can be considered negligible by those skilled in the art.

[0245] In the description of this invention, it should be understood that the terms "center," "length," "width," "thickness," "top," "bottom," "upper," "lower," "left," "right," "front," "rear," "vertical," "horizontal," "inner," "outer," "axial," and "circumferential," etc., used to indicate orientation or positional relationships are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the indicated position or component must have a specific orientation, or a specific structure and operation, and therefore should not be construed as a limitation of this invention.

[0246] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0247] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0248] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0249] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A slag collection device, characterized in that, include: Water tank (10), a water passage cavity (11) is formed inside the water tank (10); A drive pump (20) is provided, the drive pump (20) including an impeller (22), the impeller (22) being rotatably disposed inside the water passage chamber (11); The filter assembly is disposed in the water passage cavity (11) and located above the impeller (22). The filter assembly has a filter chamber (45) inside, and the top of the filter chamber (45) has a slag collection port (451) communicating with the filter chamber (45). The angle between the rotation center axis of the impeller (22) and the depth direction of the water tank (10) is less than or equal to 30°, so as to form a water vortex in the water passage (11). The water vortex guides the water flow and residue from the slag collection port (451) into the filter chamber (45). The filter assembly allows the water flow to flow out through the periphery and bottom of the filter chamber (45) and collects the residue into the filter chamber (45).

2. The slag collection device according to claim 1, characterized in that, The rotation center axis of the impeller (22) is parallel to the depth direction of the water tank (10).

3. The slag collection device according to claim 1, characterized in that, The drive pump (20) also includes a drive motor (21), which is disposed on the outer bottom wall of the water tank (10). The drive motor (21) has an output shaft (211) extending into the water passage cavity (11), and the impeller (22) is connected to the output shaft (211).

4. The slag collection device according to claim 1, characterized in that, The water passage (11) includes an inlet chamber (111) and an outlet chamber (112) that are interconnected. Along the depth direction of the water tank (10), the outlet chamber (112) is arranged at the bottom of the inlet chamber (111). The filter assembly is located in the inlet chamber (111). The outer wall of the water tank (10) has a drain port (13). The drain port (13) is connected to the side wall of the outlet chamber (112). The drain port (13) is used to connect a drain valve (80) or a drain pipe. The impeller (22) is located in the outlet chamber (112).

5. The slag collection device according to claim 4, characterized in that, The outer wall of the water tank (10) also has a water inlet (12), which is connected to the side wall of the water inlet cavity (111) and is used to connect a washing pump. Along the depth direction of the water tank (10), the impeller (22) is located between the water inlet (12) and the drain outlet (13) so that the drive pump (20) assists the washing pump in feeding water into the water inlet (12).

6. The slag collection device according to claim 1, characterized in that, The bottom of the filter assembly has a flow channel (411) for residue to pass through, and the side wall of the water tank (10) has a drain outlet (13). The slag collection device further includes a filter base plate (30), which is movably disposed between a first position where the flow channel (411) is closed and a second position where the flow channel (411) is open. When the filter base plate (30) is in the first position, the slag is collected into the filter assembly. When the filter base plate (30) is in the second position, at least a portion of the slag inside the filter assembly is discharged through the flow channel (411).

7. The slag collection device according to claim 1, characterized in that, The slag collection device further includes a baffle assembly (70) disposed at the slag collection port (451). The baffle assembly (70) is configured to open the slag collection port (451) when water flows into the filter chamber (45) through the slag collection port (451) to collect residue into the filter chamber (45) through the slag collection port (451), and to close the slag collection port (451) when water flows out of the filter chamber (45) through the slag collection port (451) to prevent residue in the filter chamber (45) from escaping through the slag collection port (451).

8. The slag collection device according to claim 7, characterized in that, The baffle assembly (70) includes two baffles (71), which are flipped relative to each other and disposed on the inner wall of the filter chamber (45). The baffle assembly (70) has a first state in which the two baffles (71) are flattened relative to each other, and a second state in which the two baffles (71) are folded relative to each other into the filter chamber (45). When the baffle assembly (70) is in the second state, the baffle assembly (70) rotates under the impact of the water flow flowing into the filter chamber (45) through the slag collection port (451) so that the slag collection port (451) opens; When the baffle assembly (70) is in the first state, the baffle assembly (70) rotates in the opposite direction under the action of the water flowing out of the filter chamber (45) through the slag collection port (451) so as to close the slag collection port (451).

9. The slag collection device according to claim 6, characterized in that, The impeller (22) has a clearance space (224) on the side facing the filter assembly, the clearance space (224) being used to accommodate the bottom of the filter base plate (30) in the second position.

10. A dishwasher, characterized in that, Includes the slag collection device as described in any one of claims 1-9.

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