A dishwasher

Abstract

The present invention relates to the technical field of kitchen appliances, and in particular to a dishwasher. The dishwasher provided by the present invention comprises an inner tank, a coarse filter, a return water tank, a cyclone mechanism, and a washing mechanism. When the dishwasher is in operation, sewage mixed with residues washed out of the inner tank enters a drain port, large residues are filtered through coarse filtration, and sewage mixed with small residues enters the return water tank. The cyclone mechanism drives the sewage in the return water tank to swirl in the return water chamber to generate a swirling water flow. Due to the action of the rotating centrifugal force and the fact that the small residues mixed in the sewage are heavier than water, the small residues rise along the inner wall of the return water tank to the upper side of the return water port. The sewage sprayed from the return water port through the washing mechanism to the inner tank is almost free of small residues, thereby preventing the small residues from entering the inner tank and causing secondary contamination of tableware. At the same time, the entire dishwasher is provided with only coarse filtration, which does not increase the resistance of the system, thereby ensuring that the water flow in the spray water channel of the dishwasher is sufficient and the spraying force meets the requirements.

Description

Technical Field

[0001] The present invention relates to the technical field of kitchen appliances, and in particular to a dishwasher. Background Art

[0002] A dishwasher is a device used to automatically wash tableware such as bowls, chopsticks, plates, dishes, knives, and forks. It typically consists of an inner tank and a sink. The inner tank is equipped with a drain outlet, which contains a filter mechanism that filters out debris generated during the washing process. Existing filter mechanisms typically use a three-layer filtration system, including a flat filter, a coarse filter, and a fine filter, filtering out debris of varying sizes.

[0003] Since the existing dishwasher filter mechanism is equipped with fine filtration, smaller residues adhere to the fine filter surface, which will cause excessive resistance when the washing pump pumps water, untimely water supply in the water channel, and greatly reduced spraying force, affecting the normal operation of the washing pump and the washing effect of the tableware; if the fine filter is set to a larger size, it will cause residues with smaller diameters to enter the spray water channel, and the purpose of preventing fine residues from entering the spray water channel will not be achieved, which will cause secondary contamination of the tableware and affect the washing effect of the tableware. Summary of the Invention

[0004] (1) The technical problem to be solved by the present invention is that the existing dishwasher uses a flat filter, coarse filtration and fine filtration to filter the residue generated by washing, which has the problem of large system resistance affecting the normal operation of the washing pump and reducing the spraying force. At the same time, small residues will also enter the spray water path, causing secondary pollution.

[0005] (2) Technical solution

[0006] In order to solve the above technical problems, an embodiment of the present invention provides a dishwasher, which includes an inner tank, a coarse filter, a return water tank, a cyclone mechanism and a washing mechanism;

[0007] A cleaning chamber is formed in the inner tank, a return water chamber is formed in the return water tank, a first drain port is provided on the inner tank, the cleaning chamber is connected to the return water chamber through the first drain port, and the coarse filter is provided at the first drain port;

[0008] A water return port is provided on the side wall of the water return chamber, and the washing mechanism is connected to the water return port for spraying the water in the water return chamber into the washing chamber;

[0009] The cyclone mechanism is used to drive the water in the return water chamber to swirl and flow, so as to drive the residue entering the return water chamber to rise to the upper side of the return water outlet.

[0010] According to one embodiment of the present invention, the cross-sectional area of ​​the return water tank gradually increases from the lower end to the upper end.

[0011] According to one embodiment of the present invention, the return water tank is in the shape of a cone that is wider at the top and narrower at the bottom.

[0012] According to one embodiment of the present invention, the swirl mechanism includes a swirl motor and a swirl blade. The swirl blade is arranged in the return water chamber, and the swirl motor is used to drive the swirl blade to rotate; the rotation axis of the swirl blade is arranged along the height direction of the return water trough.

[0013] According to one embodiment of the present invention, a first through hole is provided at the bottom of the return water trough, the swirl motor is located outside the return water trough, and the output shaft of the swirl motor passes through the first through hole and is connected to the swirl blade.

[0014] According to one embodiment of the present invention, the swirl blades are arranged in the return water tank, the swirl motor is located outside the return water tank, and the swirl motor drives the swirl blades to rotate through a magnetic attraction component.

[0015] According to one embodiment of the present invention, the magnetic attraction assembly includes a magnet and a ferromagnetic element, the swirl motor and the swirl blade are correspondingly arranged, the swirl motor is provided with a magnet, and the swirl blade is provided with the ferromagnetic element;

[0016] Or the swirl blades are provided with magnets, and the swirl motor is provided with ferromagnetic elements.

[0017] According to one embodiment of the present invention, the vortex motor is provided with a rotating arm, the output shaft of the vortex motor is connected to the rotating arm for driving the rotating arm to rotate, and the magnet or the ferromagnetic element is provided on the rotating arm.

[0018] According to one embodiment of the present invention, the swirl blade is located in the middle of the lower end of the return water tank, and the swirl motor is correspondingly provided on the lower side of the swirl blade;

[0019] The lower end of the swirl blade is connected to a ferromagnetic element, the upper end of the swirl motor is provided with the rotating arm, and the rotating arm is provided with a magnet;

[0020] Or the lower end of the swirl blade is connected to a magnet, the upper end of the swirl motor is provided with the rotating arm, and the rotating arm is provided with a ferromagnetic element.

[0021] According to one embodiment of the present invention, the return water tank is provided with a second drain outlet, and the dishwasher further includes a drain pump, which is provided outside the return water tank, and the drain pump and the second drain outlet are connected through a drainage channel.

[0022] According to one embodiment of the present invention, a mounting groove is provided on the outer wall of the lower end of the return water groove, and the swirl motor is fixed in the mounting groove.

[0023] According to one embodiment of the present invention, the cyclone mechanism includes a drainage pump, and the drainage pump includes an impeller. The impeller is located in the return water chamber, and the rotation axis of the impeller extends along the height direction of the return water trough.

[0024] According to one embodiment of the present invention, the return water tank is provided with a second drain outlet communicating with the return water chamber, and the dishwasher further comprises a switching component for switching the second drain outlet open or closed.

[0025] According to an embodiment of the present invention, the second drain port is connected to a drainage channel, and the drainage channel is located outside the return water chamber.

[0026] According to one embodiment of the present invention, the switching assembly includes a drainage motor and a drainage baffle, the drainage baffle is located in the drainage channel, the drainage motor is located outside the drainage channel, and the output shaft of the drainage motor extends into the drainage channel and is connected to the drainage baffle, driving the baffle to rotate to open or close the second drainage channel.

[0027] According to one embodiment of the present invention, a water inlet is further provided on the return water trough, and the water inlet is tangentially arranged along the inner wall of the return water trough.

[0028] According to one embodiment of the present invention, the water inlet is provided at the upper end of the upper side wall of the return water trough.

[0029] According to one embodiment of the present invention, a filter assembly is provided at the water return port.

[0030] The beneficial effects of the present invention are as follows: the dishwasher provided by the present invention includes an inner tank, a coarse filter, a return water tank, a cyclone mechanism and a washing mechanism; when the dishwasher is in operation, water is sprayed into the inner tank through the spray assembly to clean the tableware in the inner tank, and the washed sewage mixed with residue enters the drain port, and then the large residue is filtered through the coarse filter, and the sewage mixed with small residue enters the return water tank. The cyclone mechanism drives the sewage in the return water tank to swirl in the return water chamber to generate a swirling water flow. Due to the action of the rotating centrifugal force and the fact that the small residue mixed in the sewage is heavier than water, the small residue will rise along the inner wall of the return water tank to a position in the return water chamber located above the return water port. Therefore, the sewage sprayed from the return water port through the washing mechanism to the inner tank is almost free of small residue, which can prevent small residue from entering the inner tank and causing secondary contamination of the tableware. At the same time, the entire dishwasher only needs to be provided with a coarse filter to filter residues of all sizes, with better filtering effect and without increasing the resistance of the system, thereby ensuring that the water flow in the spray water channel of the dishwasher is sufficient and the spraying force meets the requirements, thereby improving the washing effect of the tableware. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the specific embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0032] Figure 1 A schematic structural diagram of a dishwasher provided in accordance with an embodiment of the present invention;

[0033] Figure 2 A cross-sectional view of a dishwasher provided in Example 2 of the present invention;

[0034] Figure 3 for Figure 2 A magnified view of part A;

[0035] Figure 4 for Figure 2 A magnified view of part B;

[0036] Figure 5 for Figure 2 Magnified view of part C;

[0037] Figure 6 A top view of a return water tank provided in Example 2 of the present invention;

[0038] Figure 7 A schematic diagram of the structure of coarse filtration provided in Example 2 of the present invention;

[0039] Figure 8A three-dimensional diagram of a filter assembly provided in a second embodiment of the present invention from one perspective;

[0040] Figure 9 A three-dimensional diagram of the filter assembly provided in the second embodiment of the present invention from another perspective;

[0041] Figure 10 A schematic structural diagram of a cyclone motor provided in the second embodiment of the present invention;

[0042] Figure 11 A schematic structural diagram of a swirl blade provided in the second embodiment of the present invention;

[0043] Figure 12 A cross-sectional view of a dishwasher provided in Embodiment 3 of the present invention;

[0044] Figure 13 for Figure 12 Magnified view of the D part;

[0045] Figure 14 A schematic structural diagram of a cyclone motor provided in the third embodiment of the present invention;

[0046] Figure 15 A schematic structural diagram of a swirl blade provided in the third embodiment of the present invention;

[0047] Figure 16 A cross-sectional view of a dishwasher provided in a fourth embodiment of the present invention;

[0048] Figure 17 for Figure 16 A magnified view of part E;

[0049] Figure 18 A schematic structural diagram of a drainage pump provided in a fourth embodiment of the present invention;

[0050] Figure 19 A schematic diagram of the structure of the closed drainage channel provided in the fourth embodiment of the present invention;

[0051] Figure 20 A schematic diagram of the structure of the drainage channel opening provided in the fourth embodiment of the present invention;

[0052] Figure 21 A cross-sectional view of a dishwasher provided in a fifth embodiment of the present invention;

[0053] Figure 22 for Figure 21 Magnified view of part F;

[0054] Figure 23 This is a schematic diagram of the operation of the swirl mechanism provided in Example 4 of the present invention.

[0055] Icon: 1-Inner tank; 11-Cleaning chamber; 12-First drain outlet;

[0056] 2 - return water tank; 21 - return water chamber; 211 - swirl motor; 2111 - mounting ear; 2112 - magnet; 2113 - rotating arm; 212 - swirl blade; 2121 - first shaft hole; 2122 - first fixing hole; 2123 - second fixing hole; 2124 - iron block; 213 - water inlet;

[0057] 22 - Second drain port; 221 - Drain channel; 222 - Drain baffle; 223 - Drain motor;

[0058] 23-water return port; 231-water return channel; 2311-first card slot;

[0059] 24-mounting slot; 25-groove;

[0060] 26 - water return baffle; 261 - first connecting piece; 2611 - positioning boss; 2612 - holding boss; 2613 - first buckle; 262 - second connecting piece; 263 - water return surface; 264 - filter hole;

[0061] 27-first cam shaft;

[0062] 28-first through hole;

[0063] 29- positioning slot;

[0064] 3-coarse filtration; 31-first flange; 311-grip opening; 32-bottom plate; 321-second flange; 322-convex rib; 33-mesh; 34-accommodating cavity; 35-second convex shaft;

[0065] 4-drainage pump; 41-impeller. DETAILED DESCRIPTION

[0066] In order to more clearly understand the above-mentioned objects, features and advantages of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. In the absence of conflict, the embodiments of the present application and the features in the embodiments can be combined with each other. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0067] This application Figure 1 and Figures 6 to 9 The structure in the embodiment is applicable to all embodiments; that is, the structures of the inner tank 1, coarse filter 3, return water tank 2 and filter assembly in the application are common to embodiments one to five.

[0068] Example 1

[0069] like Figures 1 to 23As shown, this embodiment provides a dishwasher, which includes an inner tank 1, a coarse filter 3, a return water tank 2, a cyclone mechanism and a washing mechanism; a cleaning chamber 11 is formed in the inner tank 1, a return water chamber 21 is formed in the return water tank 2, a first drain port 12 is opened on the inner tank 1, the cleaning chamber 11 is connected to the return water chamber 21 through the first drain port 12, the coarse filter 3 is arranged at the first drain port 12; a return water port 23 is further provided on the side wall of the return water chamber 21, and the washing mechanism It is connected to the return water port 23 and is used to spray the water in the return water chamber 21 to the cleaning chamber 11; the cyclone mechanism is used to drive the water in the return water chamber 21 to swirl, so as to drive the residue entering the return water chamber 21 to rise to the upper side of the return water port 23, wherein a part of the residue is thrown out of the return water chamber 21, that is, the residue in the return water chamber 21 will enter the coarse filter 3 through the first drain port 12 on the upper side, and the other part of the residue stays at the upper part of the return water chamber 21 and is located on the upper side of the return water port 23.

[0070] The dishwasher provided by the present invention comprises an inner tank 1, a coarse filter 3, a return water tank 2, a cyclone mechanism and a washing mechanism. When the dishwasher is in operation, water is sprayed into the inner tank 1 through the spray assembly to wash the dishes in the inner tank 1. The washed sewage mixed with the residue enters the first drain port 12, and then the large residue is filtered through the coarse filter 3. The sewage mixed with the small residue enters the return water tank 2. The cyclone mechanism drives the sewage in the return water tank 2 to swirl in the return water chamber 21 to generate a swirling water flow. Due to the action of the rotating centrifugal force, the small residue mixed in the sewage is swirl. The weight of the residue is larger than that of water, and the small residue will rise along the inner wall of the return water tank 2 to the upper side of the return water port 23. Therefore, the sewage sprayed from the return water port 23 to the inner tank 1 through the washing mechanism is almost not mixed with small residue, which can prevent the residue from entering the inner tank 1 and causing secondary contamination of the tableware. At the same time, the dishwasher only needs to be equipped with a coarse filter 3 to filter residues of all sizes, with better filtering effect and without increasing the resistance of the system, thereby ensuring that the water flow in the dishwasher spray water channel is sufficient and the spraying force meets the requirements, thereby improving the washing effect of the tableware.

[0071] Example 2

[0072] This embodiment provides a dishwasher, such as Figures 1 to 11As shown, the dishwasher includes an inner tank 1, a coarse filter 3, a return water tank 2, a cyclone mechanism and a washing mechanism; a washing chamber 11 is formed in the inner tank 1, a return water chamber 21 is formed in the return water tank 2, a first drain port 12 is provided on the inner tank 1, the washing chamber 11 is connected to the return water chamber 21 through the first drain port 12, and the coarse filter 3 is arranged at the first drain port 12; the cyclone mechanism is used to drive the water in the return water chamber 21 to swirl, so as to drive the residue entering the return water chamber 21 to rise to the upper part of the return water chamber 21; a return water port 23 is further provided at the lower part of the return water chamber 21, and the washing mechanism is connected to the return water port 23, and is used to spray the water in the return water chamber 21 into the washing chamber 11.

[0073] like Figure 2 As shown, in this embodiment, the cross-sectional area of ​​the return water tank 2 gradually increases from the lower end to the upper end, that is, in this embodiment, the return water tank 2 is in a shape with a large upper part and a small lower part. Since the cross-sectional area of ​​the return water tank 2 gradually increases from bottom to top, when the cyclone mechanism drives the sewage in the return water tank 2 to rotate, the small residue is subjected to the centrifugal force of the spiral rise. Due to the action of the rotating centrifugal force, a vortex water flow is generated in the return water chamber 21, and the weight of the small residue mixed in the water is larger than that of the water. Therefore, the small residue in the return water chamber 21 will rise to the upper part of the return water chamber 21 along the inclined side wall of the return water tank 2. In this embodiment, the return water port 23 is arranged on the side wall of the lower part of the return water tank 2, so the position of the residue is higher than the position of the return water port 23. The water sprayed into the inner tank 1 through the return water port 23 and the washing mechanism does not contain small residue, and there will be no situation where small residue enters the inner tank 1 through the washing mechanism and causes secondary contamination of the tableware. Among them, in this embodiment, after the small residue rises to the upper end of the return water chamber 21, a part of the residue can enter the coarse filter 3. Since the cyclone mechanism continues to operate, the small residue is continuously maintained in the coarse filter 3 under the action of the centrifugal force continuously applied by the cyclone mechanism. A small part of the small residue does not enter the coarse filter 3, and the small residue is suspended at the upper end of the return water chamber 21 due to the centrifugal force applied by the cyclone mechanism.

[0074] like Figure 2 As shown, in this embodiment, the return water trough 2 is in the shape of a cone that is wide at the top and narrow at the bottom. Optionally, the return water trough 2 is in the shape of a frustum. Therefore, when the cyclone mechanism is started, water spirals up along the inclined side walls of the return water trough 2. Since the return water trough 2 is in the shape of a frustum, small residues are subjected to the centrifugal force of the spiral rise. Under the action of the centrifugal force of the spiral rise, the small residues rise to the upper part of the return water chamber 21, so that the water sprayed into the inner tank 1 does not contain small residues, which can avoid the water in the return water trough 2 from secondary contamination of the tableware.

[0075] It should be noted that, in this embodiment, the return water trough 2 is not limited to a truncated cone structure, but may also be a square truncated cone structure, or other shapes, such as a triangle, a trapezoid, etc. As long as the return water trough 2 can be in a "wide at the top and narrow at the bottom" shape so that a swirling water flow is generated in the return water chamber 21 and small residues in the water flow rise, the design concept of the present invention can be realized and should fall within the protection scope of the present invention.

[0076] like Figure 2 、 Figure 5 、 Figure 10 and Figure 11 As shown, the swirl mechanism provided in this embodiment includes a swirl motor 211 and a swirl blade 212. The swirl blade 212 is arranged in the return water chamber 21. The swirl motor 211 is used to drive the swirl blade 212 to rotate; the rotation axis of the swirl blade 212 is set along the height direction of the return water tank 2. In this embodiment, the swirl mechanism includes a swirl motor 211 and a swirl blade 212. When the dishwasher is running, the swirl motor 211 drives the swirl blade 212 to rotate. The axis of the swirl blade 212 is set along the height direction of the return water tank 2, that is, when the dishwasher is placed horizontally, the axis of the swirl motor 211 is set vertically along the up and down direction. The swirl blade 212 rotates in the horizontal plane under the drive of the swirl motor 211. The rotation of the swirl blade 212 drives the sewage in the return water chamber 21 to generate a spiral upward swirling water flow, and the small residual water mixed in the sewage is removed. Under the action of centrifugal force, the residue rises to the upper part of the return water chamber 21, wherein a part of the small residue is thrown out of the return water chamber 21 and enters the coarse filter 3, and a small part of the small residue is located in the upper part of the return water chamber 21. Since the swirl blades 212 continue to rotate, a swirling water flow is continuously generated in the return water chamber 21, and the small residue is continuously suspended in the upper part of the return water chamber 21 by the action of centrifugal force. The small residue in the coarse filter 3 is also kept in the coarse filter 3 under the action of the continuous centrifugal force, thereby preventing the small residue from being sprayed from the return water port 23 through the washing mechanism into the inner tank 1. Preferably, in this embodiment, the washing mechanism includes a washing pump and a spray assembly, the water inlet end of the washing pump is connected to the return water port 23 of the return water tank 2, and the water outlet end of the washing pump is connected to the spray assembly of the dishwasher, and the spray assembly uses the sewage flowing out of the return water port 23 to clean the tableware in the washing chamber 11 formed by the inner tank 1. In this embodiment, the rotation axis of the swirl blade 212 coincides with the axis of the return water trough 2 , that is, the swirl blade 212 is located at the center of the bottom of the return water trough 2 .

[0077] like Figure 2 and Figure 5As shown, the swirl blade 212 is arranged in the return water trough 2, and a first through hole 28 is provided at the bottom of the return water trough 2. The swirl motor 211 is located outside the return water trough 2, and the output shaft of the swirl motor 211 passes through the first through hole 28 to be connected with the swirl blade 212; in this embodiment, the swirl blade 212 is provided on the bottom wall of the return water trough 2, and the output shaft of the swirl motor 211 passes through the first through hole 28 provided on the bottom wall of the return water trough 2 and extends into the return water chamber 21, and is connected to the lower end of the swirl blade 212. The swirl motor 211 drives the swirl blade 212 to rotate through the output shaft, thereby realizing the generation of a swirling water flow in the return water chamber 21.

[0078] Optional, such as Figure 10 and Figure 11 As shown, the output shaft of the swirl motor 211 is a circular shaft, and a notch is cut in the axial direction of the output shaft of the swirl motor 211. The swirl blade 212 is provided with a first axial hole 2121 that is adapted to the shape and size of the output shaft. In this embodiment, the output shaft of the swirl motor 211 is formed into a semicircular shaft structure after a notch is cut in the axial direction. The first axial hole 2121 is also a semicircular axial hole that is adapted to the output shaft of the swirl motor 211. The output shaft of the swirl motor 211 is inserted into the first axial hole 2121 opened at the lower end of the swirl blade 212, driving the swirl blade 212 to rotate. In this embodiment, the central angle of the notch cut on the output shaft of the swirl motor 211 is not limited to 180 degrees. For example, the notch cut on the output shaft of the swirl motor 211 is 20 degrees, 30 degrees, 40 degrees, etc., which can also achieve the purpose of the output shaft of the swirl motor 211 driving the swirl blade 212 to rotate; and the output shaft of the swirl motor 211 is not limited to a circular shaft. For example, the output shaft of the swirl motor 211 is a square shaft or a triangular shaft, and the corresponding first shaft hole 2121 is limited to a corresponding shape, so that the output shaft of the swirl motor 211 is adapted to the first shaft hole 2121 on the swirl blade 212, thereby achieving the purpose of the swirl motor 211 driving the swirl blade 212 to rotate. Of course, in this embodiment, the output shaft of the swirl motor 211 can also drive the swirl blade 212 to rotate in other ways. For example, the output shaft of the swirl motor 211 extends into the return water chamber 21, and a rotating shaft is provided at the lower end of the swirl blade 212. The output shaft of the swirl motor 211 and the rotating shaft of the swirl blade 212 are connected through a coupling to realize the rotation of the swirl blade 212.

[0079] like Figure 2 、 Figure 5 and Figure 10As shown, a mounting groove 24 is provided on the outer wall of the lower end of the return water trough 2, and the swirl motor 211 is fixed in the mounting groove 24; wherein, a mounting ear 2111 is provided on the swirl motor 211, and a through hole is provided on the mounting ear 2111, and a screw hole is provided on the outer wall of the bottom of the return water trough 2, and the swirl motor 211 is fixed to the bottom wall of the return water trough 2 by screw connection.

[0080] like Figure 2 and Figure 6 As shown, a water inlet 213 is further provided on the inner wall of the return water tank 2, and the water inlet 213 is tangentially arranged along the inner wall of the return water tank 2; when the dishwasher starts to operate, water is replenished into the return water tank 2 through the water inlet 213. When the water in the return water tank 2 meets the cleaning needs of the dishwasher, the washing pump is started, and the washing pump guides the water in the return water tank 2 into the spray assembly through the return water inlet 23. The tableware in the inner tank 1 is sprayed and cleaned through the spray assembly, and then the cleaned water enters the return water chamber 21 from the first drain port 12 through the coarse filter 3. The washing pump continues to run to continuously spray the water in the return water tank 2 to the spray assembly, thereby realizing the spray cleaning operation of the spray assembly.

[0081] Since the dishwasher provided in this application is only provided with a coarse filter 3 at the first drain outlet 12 of the inner tank 1, after the dishwasher is completed, the coarse filter 3 is usually removed, and then the large residues in the coarse filter 3 and the inner tank 1 are taken out, and the small residues will fall into the return water tank 2 after the cyclone mechanism stops running, part of which falls on the bottom wall of the return water tank 2, and part of which will adhere to the inner wall of the return water tank 2. The water inlet 213 opened on the return water tank 2 in this embodiment is arranged tangentially along the inner wall of the return water tank 2, and the water flow force is very strong. Therefore, when water is taken in, the water flow will flush along the side wall of the return water tank 2, and the small residues on the inner wall of the return water tank 2 can be cleaned. Optionally, the water inlet 213 is arranged on the side wall of the upper end of the return water trough 2, and the water inlet 213 is arranged along an inclination toward the side of the return water chamber 21, that is, the water inlet 213 is an inclined hole structure, and the water inlet 213 is arranged on the inner side wall of the upper end of the return water trough 2, and is arranged tangentially along the inner wall of the return water trough 2, so that the incoming water flow will spiral downward along the inner wall of the return water trough 2, and can clean small residues on the entire inner wall of the return water trough 2, and the cleaning effect is better.

[0082] like Figure 2 and Figure 5As shown, in this embodiment, a second drain port 22 is further provided on the side wall of the return water tank 2, and the dishwasher further includes a drain pump 4, which is provided on the outside of the return water tank 2, and a drainage channel 221 is formed between the drain pump 4 and the second drain port 22. After the dishwasher finishes washing the dishes, the washing pump and the swirl motor 211 stop running. At this time, the water in the return water chamber 21 slowly stabilizes, and the small residues suspended in the upper part of the return water chamber 21 and the small residues that enter the coarse filter 3 fall onto the bottom wall of the return water chamber 21. At this time, the drain pump 4 is started, and the drain pump 4 discharges the sewage mixed with the small residues in the return water chamber 21 to the outside of the return water chamber 21. Preferably, as Figure 2 As shown, in this embodiment, the second drain port 22 is provided on the side wall of the return trough 2, and the second drain port 22 and the return port 23 are provided on opposite sides of the return trough 2. In this embodiment, a small amount of small residue may still adhere to the inner wall of the return trough 2 after drainage by the drain pump 4. Therefore, in this embodiment, the water inlet 213 is provided along the tangent direction of the inner wall of the return trough 2. Before the drain pump 4 is started, water can be passed into the return water chamber 21 through the water inlet 213, and the water inlet 213 can flush away the residue on the inner wall of the return trough 2, and then the mixture with the stabilized sewage can be discharged uniformly. Alternatively, the small residue attached to the inner wall of the return trough 2 can be flushed away the next time the dishwasher is operated.

[0083] like Figure 1 、 Figure 2 、 Figure 3 and Figure 7 As shown, the coarse filter 3 is generally cylindrical, with a first flange 31 at the upper end, which is provided with a gripping opening 311. The lower end of the coarse filter 3 is conical, with a cross-sectional area gradually increasing from top to bottom. A base 32 is also connected to the lower end of the coarse filter 3, and the lower end of the base 32 is provided with large mesh holes 33. At the same time, large mesh holes 33 are also arranged around the coarse filter 3 to block larger residues and prevent them from entering the water tank. The first drain port 12 is located in the middle of the bottom of the inner tank 1, and the coarse filter 3 is installed at the first drain port 12. In this embodiment, the mesh 33 provided on the coarse filter 3 is larger in size, and since the lower end of the coarse filter 3 is conical, the overall surface area is increased, thereby making the return water surface 263 of the coarse filter 3 provided in this embodiment larger than the return water surface 263 of the coarse filter 3 used in a general dishwasher, and matching the return water volume requirement of the entire machine, so no additional flat filter is required to increase the return water surface 263. Due to the conical structure provided at the lower end of the coarse filter 3, the space formed therein is larger, which can store large residues, and the large residues will not be exposed in the inner tank 1 due to the obstruction of the coarse filter 3.

[0084] like Figure 2As shown, the inner wall of the inner tank 1 is inclined from the periphery to the middle, so that the water in the inner tank 1 can flow into the return water chamber 21 through the first drain port 12; Figure 2 and Figure 7 As shown, the upper end of the chassis 32 at the lower end of the coarse filter 3 is provided with a second flange 321 bent outward, and the side wall of the chassis 32 is also conical. The inclination angle of the side wall of the chassis 32 is consistent with the inclination angle of the return water tank 2, which facilitates the backflow of water and the disposal of residues.

[0085] When the coarse filter 3 needs to be assembled on the sink, the first flange 31 of the coarse filter 3 is held by hand. The first flange 31 is provided with a gripping opening 311 for the fingers to hold. When the operator takes the coarse filter 3, the gripping opening 311 can be pinched to take the coarse filter 3 out and put it in, which is very convenient. The operator presses the coarse filter 3 down from top to bottom, and the bottom plate 32 of the coarse filter 3 is snapped into the bottom of the return water tank 2. The lower end of the bottom plate 32 is provided with a rib 322. The inner wall of the return water tank 2 is provided with a groove 25 that cooperates with the rib 322. The rib 322 is snapped into the groove 25 to fix the coarse filter 3. The upper surface of the bottom wall around the first drain outlet 12 of the inner tank 1 is the fixed surface. The second flange 321 at the upper end of the bottom plate 32 is pressed against the fixed surface, and the coarse filter 3 is fixed to the return water tank 2. A receiving cavity 34 is formed between the inner wall of the bottom plate 32 and the outer wall of the coarse filter 3, which can accommodate larger residues. After washing is completed, the coarse filter 3 can be directly taken out and the residue in the receiving cavity 34 can be cleaned.

[0086] like Figure 2 and Figure 7 As shown, a filter component is also provided at the return water port 23. When the washing pump draws the water in the return water tank 2 out of the return water port 23, the filter component will further filter the water to prevent small residues in the return water chamber 21 from entering the inner tank 1 through the return water port 23, further preventing small residues from entering the inner tank 1 and causing secondary contamination of the tableware in the inner tank 1.

[0087] like Figure 4 、 Figure 8 and Figure 9 As shown, the filter assembly includes a return water baffle 26, which is provided with a dense filter hole 264 structure, which can also be a gauze structure, for preventing a small amount of residue from entering the washing pump, and then preventing small residue from entering the spray assembly through the washing pump to avoid secondary pollution.

[0088] like Figures 7 to 9As shown, the return water baffle 26 is also connected to a first connecting member 261 and a second connecting member 262. The first connecting member 261 is provided at the upper end of the return water baffle 26, and the second connecting member 262 is provided at the lower end of the return water baffle 26. A return water channel 231 in communication with the return water port 23 is connected to the outer side of the return water port 23. The first connecting member 261 and the second connecting member 262 are both plate-shaped structures, one portion of which is located within the return water chamber 21, and the other portion is located within the return water pipe connected to the outer side of the return water chamber 21. The portion of the first connecting member 261 located within the return water chamber 21 is provided with a positioning boss 2611. A positioning groove 29 is provided on the inner sidewall of the upper side of the return water port 23. The positioning groove 29 cooperates with the positioning boss 2611 to position the return water baffle 26 and prevent the return water baffle 26 from moving outward from the return water port 23 and out of the return water chamber 21. The first connecting member 261 is provided with a first buckle 2613 on one side of the return water channel 231, and the second connecting member 262 is also provided with a first buckle 2613 on one side of the return water channel 231. A first slot 2311 is provided on the inner wall of the return water channel 231 to cooperate with the first buckle 2613. The first buckle 2613 cooperates with the first slot 2311 to limit the left and right movement of the return water baffle 26 along the return water port 23. At the same time, the return water baffle 26 is embedded in the return water port 23, so that the up and down movement of the return water baffle 26 is limited by the inner wall of the return water port 23, thereby achieving the return water baffle 26 being fixed in the return water port 23. The portions of the first connecting member 261 and the second connecting member 262 located in the return water chamber 21 are both provided with a gripping boss 2612, which facilitates the operator to grip the return water baffle 26 when assembling it to the return water port 23.

[0089] like Figure 7 and Figure 9 As shown, the side of the return water baffle 26 facing the return water chamber 21 is a return water surface 263, which is curved and adapted to the shape of the return water port 23, and the curved surface of the return water baffle 26 is adapted to the curved surface of the inner wall of the return water trough 2. When the return water baffle 26 is assembled on the water trough, the return water surface 263 and the side wall of the return water trough 2 are the same curved surface, ensuring that water can flow smoothly along the side wall in the return water trough 2.

[0090] When the return water baffle 26 needs to be assembled on the return water trough 2, the holding boss 2612 structure on the return water baffle 26 is held by hand, and the positioning boss 2611 on the return water baffle 26 is aligned with the positioning groove 29 on the inner wall of the return water trough 2. The baffle is pushed from the inside of the return water chamber 21 toward one side of the return water channel 231. When the first clip 2613 of the return water baffle 26 is just snapped into the first clip 2311 inside the return water channel 231, the positioning boss 2611 of the return water baffle 26 also just enters the positioning groove 29. The first clip 2311 inside the return water channel 231 is triangular in shape, and the first clip 2613 of the return water baffle 26 is also triangular in shape, which facilitates the assembly and disassembly of the return water baffle 26. When the water return baffle 26 needs to be removed, the water return baffle 26 can be removed from the water return tank 2 by simply holding the holding boss 2612 of the water return baffle 26 and applying force outward.

[0091] It should be noted that, in this embodiment, a first card slot 2311 may be provided on the first connecting member 261 and the second connecting member 262, and a first buckle 2613 may be provided on the inner wall of the return water channel 231. It can also realize the snap connection and fix the return water baffle 26 through the first card slot 2311 and the first buckle 2613. Its purpose does not deviate from the design concept of the present invention and should fall within the protection scope of the present invention.

[0092] Example 3

[0093] This embodiment is substantially the same as the second embodiment, the main difference being that Figures 12 to 15 As shown, in this embodiment, the swirl mechanism includes a swirl motor 211 and swirl blades 212. The swirl blades 212 are disposed within the return water chamber 21, and the swirl motor 211 is disposed outside the return water chamber 21. The swirl motor 211 drives the swirl blades 212 to rotate via a magnetic assembly. Because the swirl motor 211 drives the swirl blades 212 to rotate via a magnetic assembly, a non-mechanical connection is used, eliminating the need for an opening at the bottom of the return water tank 2, resulting in a better overall sealing effect for the return water tank 2.

[0094] In this embodiment, the swirl mechanism includes a swirl motor 211 and a swirl blade 212. When the dishwasher is running, the swirl motor 211 drives the swirl blade 212 to rotate. The rotation of the swirl blade 212 drives the sewage in the return water chamber 21 to generate a spiral upward swirling water flow. The small residue mixed in the sewage rises to the upper part of the return water chamber 21 under the action of centrifugal force, wherein a part of the small residue is thrown out of the return water chamber 21 and enters the coarse filter 3, and a small part of the small residue is located in the upper part of the return water chamber 21. Since the swirl blade 212 continues to operate, a swirling water flow is continuously generated in the return water chamber 21, and the small residue is continuously suspended in the upper part of the return water chamber 21 by the action of centrifugal force. The small residue in the coarse filter 3 is also kept in the coarse filter 3 under the action of the continuous centrifugal force, thereby preventing the small residue from being sprayed from the return water port 23 through the washing mechanism into the inner tank 1.

[0095] like Figures 13 to 15 As shown, the magnetic attraction assembly includes a magnet 2112 and a ferromagnetic element. The swirl motor 211 and the swirl blade 212 are correspondingly arranged. The swirl motor 211 is provided with a magnet 2112, and the swirl blade 212 is provided with the ferromagnetic element. Preferably, a rotating arm 2113 is provided at the top of the swirl motor 211, and the rotating arm 2113 is provided with a magnet 2112. The swirl blade 212 is provided at the bottom of the return water tank 2, and a ferromagnetic element (iron, cobalt, nickel) is provided at the bottom of the swirl blade 212. In this embodiment, the ferromagnetic element is an iron block 2124, which is embedded in the bottom of the swirl blade 212. Due to the magnetic attraction between the magnet 2112 and the iron block 2124, when the motor drives the rotating arm 2113 to rotate, the rotating arm 2113 will attract the swirl blade 212 to rotate. The motor and the swirl blades 212 are connected by a non-mechanical structure, and there is no opening at the bottom of the return water tank 2, so the overall sealing effect of the return water tank 2 is better.

[0096] Of course, in this embodiment, an iron block 2124 may be provided on the swirl motor 211 and a magnet 2112 may be provided at the bottom of the swirl blade 212 , which can also achieve the purpose of driving the swirl blade 212 to rotate by rotating the swirl motor 211 .

[0097] like Figure 15As shown, the swirl blade 212 is provided with two blades, and an iron block 2124 is embedded at the lower end of each blade, that is, there are also two iron blocks 2124. At the same time, two magnets 2112 are provided on the rotating arm 2113, and the positions of the magnets 2112 and the iron blocks 2124 are correspondingly arranged. Optionally, a rotating shaft is provided in the middle of the swirl motor 211, and the two blades are symmetrically arranged on both sides of the rotating shaft, so that the swirl blade 212 is subjected to more balanced force when rotating. In this embodiment, a rotating arm 2113 is provided at the top of the swirl motor 211, and a magnet 2112 is provided on the rotating arm 2113. The rotating arm 2113 is driven to rotate by the swirl motor 211. The rotating arm 2113 is driven to rotate by the magnetic attraction between the magnets 2112 and the iron blocks 2124 on the rotating arm 2113, thereby driving the swirl blades 212 to rotate synchronously, thereby realizing the rotation of the water flow in the return water chamber 21. In this embodiment, the number of blades of the swirl blade 212 is not limited to two, and can be multiple, such as three, four, five, etc. At the same time, the number of the magnets 2112 and the ferromagnetic elements is not limited to two, and other numbers of blades are also possible. For example, multiple blades are provided on the rotating shaft, and the multiple blades are spaced apart and distributed circumferentially of the rotating shaft.

[0098] According to one embodiment of the present invention, Figure 12 and Figure 13 As shown, the swirl blade 212 is located at the lower end of the return water trough 2, and the swirl motor 211 is correspondingly arranged on the lower side of the swirl blade 212; the lower end of the swirl blade 212 is connected to a ferromagnetic element, and the upper end of the swirl motor 211 is provided with a magnet 2112. In this embodiment, the swirl blade 212 is arranged at the lower end of the return water trough 2, and the swirl motor 211 is correspondingly arranged on the lower side of the swirl blade 212 and located outside the return water chamber 21. This ensures that the axis of the swirl blade 212 is arranged along the height direction of the return water trough 2. That is, when the dishwasher is placed horizontally, the axis of the swirl motor 211 is arranged vertically along the vertical direction. The swirl blade 212 rotates in the horizontal plane under the drive of the swirl motor 211. At this time, the rotation of the swirl blade 212 can generate a spiral upward swirling water flow, which can drive small residues to the upper end of the return water chamber 21.

[0099] Example 4

[0100] The technical solutions of this embodiment are substantially the same as those of the second embodiment, the main difference being that Figures 16 to 20As shown, in this embodiment, the cyclone mechanism includes a drainage pump 4 , and the drainage pump 4 includes an impeller 41 . The impeller 41 is located in the return water chamber 21 , and the rotation axis of the impeller 41 extends along the height direction of the return water tank 2 . In this embodiment, the drain pump 4 of the dishwasher itself is used as a vortex mechanism. When the existing dishwasher is running, the drain pump 4 does not work. In this embodiment, when the dishwasher is running, the drain pump 4 is started, and the impeller 41 of the drain pump 4 drives the small residue in the return water chamber 21 to rotate and flow with the sewage. The small residue mixed in the sewage rises to the upper part of the return water chamber 21 under the action of centrifugal force, among which some of the small residue is thrown out of the return water chamber 21 and enters the coarse filter 3, and a small part of the small residue is located in the upper part of the return water chamber 21. The drain pump 4 continues to run, so a vortex water flow is continuously generated in the return water chamber 21, and the small residue is continuously affected by the centrifugal force and suspended in the upper part of the return water chamber 21. The small residue in the coarse filter 3 is also kept in the coarse filter 3 under the action of the continuous centrifugal force, thereby preventing the small residue from being sprayed from the return water port 23 through the washing mechanism into the inner tank 1.

[0101] like Figure 16 and Figure 17 As shown, the return water tank 2 is provided with a second drain port 22 communicating with the return water chamber 21, and the dishwasher further includes a switching component for switching the second drain port 22 on or off; the second drain port 22 is connected to a drainage channel 221, and the drainage channel 221 is located outside the return water chamber 21; Figure 19 As shown, when the dishwasher is running, the switching component switches the second drain port 22 to be closed. At this time, the drainage channel 221 is disconnected from the return water chamber 21. Although the drainage pump 4 can drive the sewage in the return water chamber 21 to rotate and flow, it will not be discharged from the second drain port 22 through the drainage channel 221; Figure 20 As shown, when the dishwasher stops operating, the switching assembly drives the second drain port 22 to open, and the drain pump 4 discharges the sewage mixed with small residues in the return water chamber 21 through the second drain port 22 and the drain channel 221 out of the return water chamber 21; wherein the drain pump 4 is fixed to the bottom of the return water tank 2 and is located outside the return water tank 2, and the impeller 41 of the impeller is disposed within the return water tank 2 and is located on the inner wall surface of the bottom wall of the return water tank 2. In this embodiment, the drainage function and the swirl function are integrated into the drain pump 4 of the dishwasher itself, so a separate swirl mechanism is not required, which can simplify the structure of the dishwasher, reduce the size of the dishwasher, and save manufacturing costs.

[0102] like Figures 16 to 20As shown, the switching assembly includes a drainage motor 223 and a drainage baffle 222, the drainage baffle 222 is located in the drainage channel 221, the drainage motor 223 is located outside the drainage channel 221, and the output shaft of the drainage motor 223 extends into the drainage channel 221 and is connected to the drainage baffle 222 to drive the drainage baffle 222 to rotate; in this embodiment, the second drain port 22 is provided on the side wall of the return water tank 2, optionally, the second drain port 22 and the return water port 23 are provided on the On the two opposite side walls of the return water tank 2, the drainage channel 221 can be a drainage pipe. The drainage pipe can be an independent pipe or a pipe integrally formed from the second drain outlet 22 to the outer edge. The drainage baffle 222 is a circular sheet structure, and the drainage channel 221 is a circular tube. In this embodiment, the opening or closing of the second drain outlet 22 is achieved by controlling the opening or closing of the drainage channel 221, that is, the connection or disconnection of the drainage channel 221 and the return water chamber 21 is achieved by opening or closing the drainage channel 221.

[0103] like Figure 16 and Figure 19 As shown, when the dishwasher is running, the drainage baffle 222 can block the drainage channel 221, and the drainage channel 221 is in a closed state. The drainage pump 4 drives the water in the return tank 2 to rotate and flow, so as to throw the lower residue in the return tank 2 to the upper end of the return tank 2, or to the coarse filter 3; Figure 20 As shown, when the dishwasher finishes washing the dishes, the drain motor 223 drives the drain baffle 222 to rotate, and the drain channel 221 is opened. At this time, the drain channel 221 is connected to the return water chamber 21, and the drain pump 4 will discharge the water and small residues in the return water tank 2 through the second drain port 22 and the drain channel 221. After the sewage and small residues are discharged, the drain motor 223 drives the drain baffle 222 to reset, and the drain baffle 222 returns to the closed state to ensure that no residual water flows back.

[0104] In this embodiment, drainage or non-drainage is achieved by controlling the closing or opening of the drainage channel 221. It can be understood that in this embodiment, drainage or non-drainage of the return water tank 2 can also be achieved by controlling the opening or closing of the second drainage port 22.

[0105] Example 5

[0106] The technical solutions of this embodiment are substantially the same as those of the second embodiment, the main difference being that Figures 21 to 23 As shown, in this embodiment, the swirl mechanism includes swirl blades 212, and the rotation axis extends along the height direction of the return water tank 2. Figure 21 and Figure 22As shown, a first upward protrusion 27 is vertically provided at the center of the bottom inner wall of the return water tank 2, and a second downward protrusion 35 is vertically provided on the lower wall of the coarse filter 3. The swirl blade 212 is a sheet-like structure, and a second fixing hole 2123 is provided at the upper end of the swirl blade 212, and a first fixing hole 2122 is provided at the lower end of the swirl blade 212. The first protrusion 27 is inserted into the first fixing hole 2122, and the second protrusion 35 is inserted into the second fixing hole 2123. The first protrusion 27 and the second protrusion 35 are coaxially arranged, and the swirl blade 212 can rotate around the first protrusion 27 and the second protrusion 35. In this embodiment, the first protrusion 27 and the second protrusion 35 are both arranged at the central axis of the return water chamber 21, that is, the axes of the first protrusion 27 and the second protrusion 35 coincide with the central axis of the return water chamber 21.

[0107] In this embodiment, the return water inlet 23 formed on the inner wall of the return water tank 2 is tangentially aligned with the inner wall of the return water tank 2. When water flows from the return water tank 2 into the return water channel 231 under the action of the washing pump, the water flows against the surfaces of the swirl blades 212, thereby driving the swirl blades 212 to rotate. The swirl blades 212 drive small debris within the return water chamber 21 to rotate along with the sewage. The small debris mixed in the sewage rises to the upper portion of the return water chamber 21 under the action of centrifugal force. Some of the small debris is ejected from the return water chamber 21 and enters the coarse filter 3, while a small portion of the small debris remains in the upper portion of the return water chamber 21. Since the washing pump is continuously running, the water in the return water chamber 21 will be continuously sucked into the return channel from the return port, so the swirl blade 212 is continuously driven by the water flow to rotate, and a swirling water flow is continuously generated in the return water chamber 21. Small residues are continuously suspended in the upper part of the return water chamber 21 by the centrifugal force, and the small residues in the coarse filter 3 are also kept in the coarse filter 3 under the action of the continuous centrifugal force, thereby preventing the small residues from being sprayed from the return water port 23 through the washing mechanism into the inner tank 1. In this embodiment, since the swirl blade 212 extends in height from the bottom end of the return water tank 2 to the coarse filter 3, the size of the swirl blade 212 is larger, and the rotational flow rate of the swirl blade 212 is greater when it rotates, which can more easily raise the small residues in the return water chamber 21 to the upper end of the return water chamber 21, or throw them into the coarse filter 3.

[0108] In the description of the present invention, it should be noted that the terms "upper" and "lower" and other terms indicating orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the present invention. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation, and therefore should not be construed as limitations on the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0109] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium, or they can refer to connections between the internal parts of two components. A person of ordinary skill in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances. In addition, in the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0110] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A dishwasher, characterized in that: The dishwasher comprises an inner tank (1), a coarse filter (3), a water return tank (2), a cyclone mechanism and a washing mechanism; A cleaning chamber (11) is formed in the inner tank (1), a return water chamber (21) is formed in the return water tank (2), a first drain port (12) is provided on the inner tank (1), the cleaning chamber (11) is connected to the return water chamber (21) through the first drain port (12), and the coarse filter (3) is provided at the first drain port (12); A water return port (23) is provided on the side wall of the water return chamber (21), and the washing mechanism is in communication with the water return port (23) for spraying water in the water return chamber (21) into the cleaning chamber (11); The cross-sectional area of ​​the return water trough (2) gradually increases from the lower end to the upper end; when the dishwasher is running, the cyclone mechanism is used to drive the water in the return water chamber (21) to swirl, so as to drive the residue entering the return water chamber (21) to rise along the inclined side wall of the return water trough (2) and hover above the return water port (23), so as to prevent the residue from being sprayed from the return water port (23) through the washing mechanism into the inner tank (1); The dishwasher or the cyclone mechanism includes a drainage pump (4); the return water tank (2) is provided with a second drainage port (22) communicating with the return water chamber (21); the dishwasher also includes a switching component, the switching component being used to switch the second drainage port (22) on or off; The second drain port (22) is connected to a drain channel (221), and the drain channel (221) is located outside the return water chamber (21); When the dishwasher stops running, the second drain port (22) is opened by the switching component, the drain pump is started, and the drain pump (4) discharges the sewage in the return water chamber (21) out of the return water chamber (21) through the second drain port (22) and the drainage channel (221).

2. The dishwasher according to claim 1, characterized in that The return water trough (2) is in the shape of a cone that is wide at the top and narrow at the bottom.

3. The dishwasher according to claim 2, characterized in that The swirl mechanism comprises a swirl motor (211) and a swirl blade (212); the swirl blade (212) is arranged in the return water chamber (21); the swirl motor (211) is used to drive the swirl blade (212) to rotate; and the rotation axis of the swirl blade (212) is arranged along the height direction of the return water trough (2).

4. The dishwasher according to claim 3, characterized in that A first through hole is provided at the bottom of the return water trough (2); the swirl motor (211) is located outside the return water trough (2); and the output shaft of the swirl motor (211) passes through the first through hole and is connected to the swirl blade (212).

5. The dishwasher according to claim 3, characterized in that The swirl blades (212) are arranged in the return water trough (2), the swirl motor (211) is located outside the return water trough (2), and the swirl motor (211) drives the swirl blades (212) to rotate via a magnetic attraction component.

6. The dishwasher according to claim 5, characterized in that The magnetic attraction assembly includes a magnet (2112) and a ferromagnetic element. The swirl motor (211) and the swirl blade (212) are arranged correspondingly, the swirl motor (211) is provided with a magnet (2112), and the swirl blade (212) is provided with the ferromagnetic element; Alternatively, a magnet (2112) is provided on the swirl blade (212), and a ferromagnetic element is provided on the swirl motor (211).

7. The dishwasher according to claim 6, characterized in that A rotating arm (2113) is provided on the vortex motor (211); an output shaft of the vortex motor (211) is connected to the rotating arm (2113) and is used to drive the rotating arm (2113) to rotate; and the magnet (2112) or the ferromagnetic element is provided on the rotating arm (2113).

8. The dishwasher according to claim 7, characterized in that The swirl blade (212) is located at the lower end of the return water tank (2), and the swirl motor (211) is correspondingly arranged on the lower side of the swirl blade (212); The lower end of the swirl blade (212) is connected to a ferromagnetic element, the upper end of the swirl motor (211) is provided with the rotating arm (2113), and the rotating arm (2113) is provided with a magnet (2112); Or the lower end of the swirl blade (212) is connected to a magnet (2112), the upper end of the swirl motor (211) is provided with the rotating arm (2113), and the rotating arm (2113) is provided with a ferromagnetic element.

9. The dishwasher according to any one of claims 4 to 8, characterized in that An installation groove (24) is provided on the outer wall of the lower end of the return water groove (2), and the swirl motor (211) is fixed in the installation groove (24).

10. The dishwasher according to claim 2, characterized in that The drainage pump (4) comprises an impeller (41), the impeller being located in the return water chamber (21), and the rotation axis of the impeller (41) extending along the height direction of the return water trough (2).

11. The dishwasher according to claim 10, characterized in that The switching assembly comprises a drainage motor (223) and a drainage baffle (222), wherein the drainage baffle (222) is located in the drainage channel (221), and the drainage motor (223) is located outside the drainage channel (221), and the output shaft of the drainage motor (223) extends into the drainage channel (221) and is connected to the drainage baffle (222), driving the baffle to rotate to open or close the drainage channel (221).

12. The dishwasher according to claim 1, wherein The return water trough (2) is further provided with a water inlet (213), and the water inlet (213) is arranged tangentially along the inner wall of the return water trough (2).

13. The dishwasher according to claim 12, characterized in that The water inlet (213) is provided at the upper end of the upper side wall of the return water trough (2).

14. The dishwasher according to claim 1, wherein A filter assembly is provided at the water return port (23).

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