Dish washing machine and filter self-cleaning method

Abstract

The invention provides a dish washing machine and a filter self-cleaning method, and belongs to the technical field of kitchen equipment. The dish-washing machine comprises a water cup, a filter, a drainage pump and a transmission assembly, the bottom of the side wall of the water cup is provided with a first drainage port communicated with the cavity, the side wall of the water cup is provided with an annular seat corresponding to the first drainage port, one side of the annular seat is provided with a second drainage port, and the filter is arranged in the cavity and comprises a main frame and a cylindrical filtering part. The two axial ends of the cylindrical filtering part are rotatably connected with the upper frame and the lower frame respectively; the drainage pump comprises a driving part and an impeller mounted on a rotating shaft of the driving part, the driving part is mounted on the annular seat, the driving part, the annular seat and the side wall of the water cup jointly define an impeller cavity, the impeller is located in the impeller cavity, and at least one flushing hole communicating the impeller cavity with the cavity is formed in the side wall of the water cup; the transmission assembly comprises a driven part and a driving part, the driven part is mounted at the bottom of the cylindrical filtering part, and the driving part is mounted on a rotating shaft of the driving part.

Description

Technical Field

[0001] The present invention relates to the technical field of kitchen equipment, and in particular to a dishwasher and a filter self-cleaning method. Background Art

[0002] During the dishwasher's cycle washing process, due to the strong suction force of the washing pump, a large number of small particles of pollutants will adhere to the filter at the water suction port of the washing pump. These pollutants are difficult to clean and cover the surface of the filter, clogging the mesh, reducing the water flow area of the filter, causing the washing pump to suck air, and greatly reducing the washing efficiency.

[0003] Because the filter and screen are integrated, the position of the screen and the water inlet of the washing pump are fixed after the filter is installed in the dishwasher. Over time, a lot of dirt will accumulate in the water inlet. On the one hand, excessive accumulation of dirt will affect the filtration effect and the cleaning performance of the dishwasher. Because the attached dirt is difficult to clean, the filter needs to be manually removed for cleaning, which makes the filter cleaning inconvenient and affects the user experience. Summary of the Invention

[0004] The object of the present invention is to provide a dishwasher that solves the problem of inconvenient filter cleaning and realizes automatic filter cleaning without the need to manually remove the filter for washing, thereby improving the user experience.

[0005] To achieve the purpose of the present invention, the present invention adopts the following technical solutions:

[0006] According to one aspect of the present invention, a dishwasher is provided, comprising a water cup, a filter, a drainage pump and a transmission assembly. The water cup has a cavity with an upward opening, a first drainage port communicating with the cavity is provided at the bottom of the side wall of the water cup, an annular seat is provided on the side wall of the water cup corresponding to the first drainage port, a second drainage port is provided on one side of the annular seat, and the water cup also has a water inlet and a water suction port communicating with the cavity; the filter is provided in the cavity, the filter comprises a main frame and a cylindrical filter portion, the main frame comprises an upper frame and a lower frame, the upper frame is clamped with the lower frame, the lower frame is clamped with the inner wall of the cavity, and the cylindrical filter portion is provided. The axial ends of the part are rotatably connected to the upper frame and the lower frame respectively; the drainage pump includes a driving part and an impeller mounted on the rotating shaft of the driving part, the driving part is mounted on the annular seat, and the driving part, the annular seat and the side wall of the water cup together form an impeller cavity, the impeller is located in the impeller cavity, and the side wall of the water cup is provided with at least one flushing hole connecting the impeller cavity and the cavity, and the flushing hole is opposite to the side of the cylindrical filter part; the transmission assembly includes a driven part and an active part, the driven part is mounted on the bottom of the cylindrical filter part, the active part is mounted on the rotating shaft of the driving part, and the active part is transmission-connected to the driven part.

[0007] According to one embodiment of the present invention, a first annular portion is provided on the inner edge of the upper frame, a second annular portion is provided on the inner edge of the lower frame, and the axial ends of the cylindrical filter portion are rotatably connected to the first annular portion and the second annular portion respectively.

[0008] According to one embodiment of the present invention, a first annular groove opening downward is provided at the lower end of the first annular portion, and the upper end of the cylindrical filter portion is plugged into the first annular groove, or a first annular groove opening upward is provided at the upper end of the cylindrical filter portion, and the lower end of the first annular portion can be rotatably plugged into the first annular groove.

[0009] According to one embodiment of the present invention, a plurality of first protrusions are arranged at intervals on the upper end of the cylindrical filter portion, and the first protrusions are in frictional contact with the top wall of the first annular groove; and / or a plurality of first ribs are arranged at intervals on the inner wall of the upper end portion of the cylindrical filter portion, and the first ribs are in frictional contact with the side wall of the first annular groove; or, the filter further includes a plurality of first balls, which are rollably arranged on the upper end of the cylindrical filter portion, and the first balls are in contact with the top wall of the first annular groove.

[0010] According to one embodiment of the present invention, a second annular groove with an opening facing downward is provided at the lower end of the cylindrical filter portion, and the second annular groove and the second annular portion are rotatably connected; or a second annular groove with an opening facing upward is provided at the upper end of the second annular portion, and the second annular groove and the lower end of the cylindrical filter portion are rotatably connected.

[0011] According to one embodiment of the present invention, an annular rib is provided at the upper end of the second annular portion, and a plurality of second protrusions are provided at intervals on the upper end of the annular rib, the second annular groove and the annular rib are rotatably connected, and the second protrusions are in frictional contact with the top wall of the second annular groove; or, the filter further includes a plurality of second balls, the second balls are rollably provided at the upper end of the second annular portion, and the second balls are in contact with the top wall of the second annular groove.

[0012] According to one embodiment of the present invention, a plurality of first hollow holes are provided at the lower end of the cylindrical filter portion, a mounting portion is provided at the center of the lower end of the cylindrical filter portion, a follower is provided on the mounting portion, the free end of the rotating shaft of the driving portion passes through the first drain port and extends into the cavity, the active member is installed on the free end of the rotating shaft of the driving portion, and both the follower and the active member are bevel gears.

[0013] According to one embodiment of the present invention, the filter further comprises a lifting cup, which is arranged in the cylindrical filter portion, the upper end of the lifting cup is engaged with the upper frame, and the lifting cup is provided with a plurality of second hollow holes.

[0014] The present invention further discloses a filter self-cleaning method, which is applied to the above-mentioned dishwasher. The operating panel of the dishwasher is provided with a normal washing mode module and a separate filter self-cleaning mode module. The normal washing mode includes a dishwashing rinse procedure and a drain cleaning procedure performed sequentially. The method comprises:

[0015] Receive the mode instruction selected by the user and enter the cleaning program of the corresponding mode according to the instruction;

[0016] After entering the normal washing mode and waiting for the dishwashing program to end, the drain cleaning program is entered, the drain pump is turned on, the driving part drives the impeller and the active part to rotate, and the active part drives the driven part and the cylindrical filter part to rotate. When the impeller rotates, the water in the cavity is discharged through the first drain port and the second drain port. The water pressure in the impeller cavity is greater than the water pressure outside the cavity. Part of the water in the impeller cavity is sprayed in the opposite direction toward the side of the cylindrical filter part through the flushing hole to flush the side of the cylindrical filter part;

[0017] When the water in the cavity is drained, the drain pump is turned off and the drainage cleaning program ends; or, when the water in the cavity is drained, the drain pump continues to run for 5-30 seconds and then turns off the drain pump, and the drainage cleaning program ends.

[0018] According to one embodiment of the present invention, the dishwasher further includes a water inlet valve in communication with the cavity, and the method further includes:

[0019] When the single filter self-cleaning mode is entered, the water inlet valve opens and the water inlet volume of the cavity reaches the preset water inlet volume L 进设1 When , the water inlet valve is closed;

[0020] The drainage pump is turned on, and the driving part drives the impeller and the active member to rotate, and the active member drives the driven member and the cylindrical filter portion to rotate. When the impeller rotates, the water in the cavity is discharged through the first drainage port and the second drainage port. The water pressure in the impeller cavity is greater than the water pressure outside the cavity. Part of the water in the impeller cavity is sprayed in the opposite direction toward the side of the cylindrical filter portion through the flushing hole to flush the side of the cylindrical filter portion;

[0021] When the water in the cavity is drained, the drain pump is turned off and the self-cleaning mode of the single filter ends; or, when the water in the cavity is drained, the drain pump continues to run for 5-30 seconds and then turns off the drain pump and the self-cleaning mode of the single filter ends.

[0022] According to one embodiment of the present invention, before the water in the cavity is drained and the remaining water volume L in the cavity is 剩设 When the water inlet valve is opened, water is introduced and drained to repeatedly flush the side circumference of the cylindrical filter, and the drainage pump remains open;

[0023] When the water inflow reaches the preset water inflow L 进设2 When , the water inlet valve is closed and the drainage pump remains on;

[0024] When the water in the cavity is drained, the drain pump is turned off and the self-cleaning mode of the single filter ends; or, when the water in the cavity is drained, the drain pump continues to run for 5-30 seconds and then turns off the drain pump and the self-cleaning mode of the single filter ends.

[0025] According to one embodiment of the present invention, the full running time of the self-cleaning mode of the single filter is 3-5 minutes, and the water intake L 进设1 and the water inlet L 进设2 equal.

[0026] According to one embodiment of the present invention, the remaining water volume L 剩设 It is 10%-30% of the water volume when the cavity is full of water.

[0027] An embodiment of the present invention has the following advantages or beneficial effects:

[0028] In a dishwasher of the present invention, when the drain pump is turned on, the driving part drives the impeller and the active part to rotate via the rotating shaft, and the active part drives the driven part and the cylindrical filter part to rotate. When the impeller rotates at high speed, water is thrown out at high speed through the second drain port under the action of centrifugal force. Since the water pressure in the impeller chamber is greater than the water pressure in the chamber, part of the water in the impeller chamber is sprayed in the opposite direction toward the side of the cylindrical filter part through the flushing hole to flush the side filter screen of the cylindrical filter part to wash away the residue attached to the side filter screen. At the same time, the cylindrical filter part rotates to throw away the residual water and residue, thereby accelerating the drying of the cylindrical filter part and realizing self-cleaning of the filter. There is no need to manually remove the filter for washing, thereby improving the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The above and other features and advantages of the present invention will become more apparent by describing in detail exemplary embodiments thereof with reference to the accompanying drawings.

[0030] Figure 1 FIG1 is a perspective view showing a filter and a drain pump of a dishwasher installed on a water cup according to an exemplary embodiment.

[0031] Figure 2 FIG. 1 is a cross-sectional view of a water cup of a dishwasher according to an exemplary embodiment.

[0032] Figure 3 yes Figure 2 An enlarged view of part A is shown.

[0033] Figure 4 yes Figure 2 An enlarged view of part B is shown.

[0034] Figure 5 yes Figure 2 An enlarged view of part C is shown.

[0035] Figure 6 is an exploded view showing a water cup, a filter, and a drain pump according to an exemplary embodiment.

[0036] Figure 7 FIG. 1 is a perspective view of a water cup of a dishwasher according to an exemplary embodiment.

[0037] Figure 8 FIG. 1 is a diagram showing a state in which a driven member and a driving member are engaged with each other according to an exemplary embodiment.

[0038] Figure 9 is an exploded view of a main frame according to an exemplary embodiment.

[0039] Figure 10 is a perspective view of a lower frame according to an exemplary embodiment.

[0040] Figure 11 FIG. 1 is a perspective view of a cylindrical filter portion according to an exemplary embodiment.

[0041] Figure 12 FIG. 1 is a diagram showing a state in which the third clamping portion and the fourth clamping portion are clamped together according to an exemplary embodiment.

[0042] Figure 13 FIG. 1 is a flowchart illustrating a normal washing mode according to an exemplary embodiment.

[0043] Figure 14 FIG. 1 is a flow chart illustrating a single filter self-cleaning mode according to an exemplary embodiment.

[0044] The description of the accompanying drawings is as follows:

[0045] 1. Water cup; 11. Cavity; 12. First drain outlet; 13. Annular seat; 131. Second drain outlet; 132. Impeller chamber; 14. Flushing hole; 15. Annular step; 151. Third clamping portion; 2. Filter; 21. Main frame; 211. Upper frame; 2111. First annular portion; 2112. First annular groove; 2113. First clamping portion; 2114. Fifth clamping portion; 2115. Avoidance groove; 212. Lower frame; 2121. Second annular portion; 2122. Annular rib; 2123. Second protrusion; 2125, fourth clamping portion; 2126, second clamping portion; 22, cylindrical filter portion; 221, first protrusion; 222, first protruding rib; 224, second annular groove; 225, first hollow hole; 226, mounting portion; 23, cup handle; 231, second hollow hole; 232, handle; 2321, sixth clamping portion; 2322, circular portion; 3, drain pump; 31, drive portion; 311, rotating shaft; 32, impeller; 4, transmission assembly; 41, driven member; 42, driving member; 6, liner bottom wall; 7, flat filter; DETAILED DESCRIPTION

[0046] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be embodied in many forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete and will fully convey the concepts of the example embodiments to those skilled in the art. Like reference numerals in the figures represent like or similar structures, and thus their detailed description will be omitted.

[0047] The terms "a", "an", "the", and "said" are used to indicate the presence of one or more elements / components / etc.; the terms "including" and "having" are used to express an open-ended inclusive meaning and mean that additional elements / components / etc. may be present in addition to the listed elements / components / etc.

[0048] like Figure 1-12 As shown, a dishwasher according to an embodiment of the present invention includes an outer shell, a control panel, an inner tank arranged in the outer shell, a flat filter 7, a spray arm support, a spray arm, a washing pump, a water cup 1, a filter 2, a drain pump 3 and a transmission assembly 4.

[0049] The water cup 1 has a cavity 11 with an upward opening. A first drain port 12 communicating with the cavity 11 is provided at the bottom of the side wall of the water cup 1. An annular seat 13 is provided on the outer wall of the water cup 1 corresponding to the first drain port 12. A second drain port 131 is provided on one side of the annular seat 13. The water cup 1 also has a water suction port and a water inlet communicating with the cavity 11. The water suction joint of the washing pump is connected to the water suction port, and the external water supply pipe is connected to the water inlet. The external water supply pipe is provided with an inlet valve.

[0050] The filter 2 is disposed within the cavity 11, with an annular cavity defined between the filter 2 and the sidewall of the cavity 11. The filter 2 comprises a main frame 21 and a cylindrical filter portion 22. The main frame 21 comprises an upper frame 211 and a lower frame 212, which are engaged with each other, and the lower frame 212 is engaged with the inner wall of the cavity 11. The cylindrical filter portion 22 is rotatably connected to the upper frame 211 and the lower frame 212 at both axial ends. Both the upper frame 211 and the lower frame 212 are provided with a plurality of hollow holes. The cylindrical filter portion 22 is used to prevent residue from being sucked into the washing pump, thereby avoiding affecting the washing effect.

[0051] The drainage pump 3 includes a driving part 31 and an impeller 32 mounted on a rotating shaft 311 of the driving part 31. The driving part 31 is mounted on the annular seat 13, and the driving part 31, the annular seat 13 and the side wall of the water cup 1 together form an impeller chamber 132 connected to the cavity 11. The impeller 32 is located in the impeller chamber 132. When the impeller 32 rotates at high speed, under the action of centrifugal force, water is thrown out at high speed through the second drain outlet 131.

[0052] At least one flushing hole 14 is opened on the side wall of the water cup 1 to connect the impeller cavity 132 and the cavity 11, and the flushing hole 14 is opposite to the side of the cylindrical filter part 22.

[0053] The transmission assembly 4 includes a driven member 41 and a driving member 42 . The driven member 41 is mounted on the bottom of the cylindrical filter portion 22 . The driving member 42 is mounted on the rotating shaft 311 . The driving member 42 is in transmission connection with the driven member 41 .

[0054] The upper end of the water cup 1 is connected to the inner pot bottom wall 6 of the inner pot. The inner pot bottom wall 6 has a groove, and the bottom wall of the groove of the inner pot bottom wall 6 has a first through hole corresponding to the cavity 11. The planar filter 7 is arranged at the upper end of the groove of the inner pot bottom wall 6. The planar filter 7 is flat and has a second through hole corresponding to the upper frame 211. The inner edge of the second through hole abuts the outer edge of the upper frame 211. The plane of the planar filter 7 has filter mesh holes. When the water after rinsing the dishes falls on the planar filter 7, the water flows down through the filter mesh holes into the groove of the inner pot bottom wall 6 and flows into the cavity 11 through the first through hole. However, the residue cannot pass through the filter mesh holes of the planar filter 7 and is washed into the filter 2 through the second through hole.

[0055] When the dishes are rinsed, the drain pump 3 is turned on, and the driving part 31 drives the impeller 32 and the active member 42 to rotate through the rotating shaft 311 , and the active member 42 drives the driven member 41 and the cylindrical filter part 22 to rotate.

[0056] When the impeller 32 rotates at high speed, centrifugal force causes water to be ejected at high speed through the second drain port 131. Since the water pressure in the impeller chamber 132 is greater than the water pressure in the chamber 11, some of the water in the impeller chamber 132 is sprayed back toward the side of the cylindrical filter portion 22 through the flushing holes 14 to flush the side filter screens of the cylindrical filter portion 22 and remove any debris attached to the side filter screens.

[0057] When the water in the cavity 11 is discharged and there is less water left, the impeller 32 rotates at high speed to suck the air in the cavity 11, so that the pressure in the impeller cavity 132 is higher than the air pressure in the cavity 11, so that the water in the impeller cavity 132 continues to be sprayed from the flushing hole 14 to the side of the cylindrical filter part 22 for flushing.

[0058] At the same time, the cylindrical filter portion 22 rotates to shake off the residual water and residue to achieve drying of the cylindrical filter portion 22, thereby achieving self-cleaning of the filter and preventing mold and bacteria from growing.

[0059] like Figure 2 、 4 As shown, in a preferred embodiment of the present invention, the inner edge of the upper frame 211 is provided with a first annular portion 2111, as shown in FIG. Figure 2 、 5As shown, a second annular portion 2121 is provided on the inner edge of the lower frame 212 , and the axial ends of the cylindrical filter portion 22 can be rotatably connected to the first annular portion 2111 and the second annular portion 2121 respectively, so as to realize the coaxial rotation of the cylindrical filter portion 22 .

[0060] like Figure 4 、 9 As shown, in a preferred embodiment of the present invention, a downwardly opening first annular groove 2112 is defined at the lower end of the first annular portion 2111. The upper end of the cylindrical filter portion 22 engages with the first annular groove 2112, enabling coaxial rotation. The cross-section of the first annular groove is slightly larger than the cross-section of the upper end of the cylindrical filter portion 22, allowing the upper end of the cylindrical filter portion 22 to rotate freely within the first annular groove 2112.

[0061] Of course, the first annular groove 2112 is not limited to being located at the lower end of the first annular portion 2111. For example, the upper end of the cylindrical filter portion 22 is provided with a first annular groove 2112 opening upward, and the lower end of the first annular portion 2111 can be rotatably inserted into the first annular groove 2112. Those skilled in the art can select the position of the first annular groove 2112 according to actual needs.

[0062] like Figure 11 As shown, in a preferred embodiment of the present invention, a plurality of first protrusions 221 are spaced apart at the upper end of the cylindrical filter portion 22, and the first protrusions 221 are in frictional contact with the top wall of the first annular groove 2112, thereby reducing friction, reducing wear and improving rotation flexibility.

[0063] like Figure 11 As shown, in a preferred embodiment of the present invention, a plurality of first ribs 222 are spaced apart on the inner wall of the upper end portion of the cylindrical filter portion 22, and the first ribs 222 are in frictional contact with the side wall of the first annular groove 2112, thereby reducing friction, reducing wear and improving rotation flexibility.

[0064] In a preferred embodiment of the present invention, the filter 2 also includes a plurality of first balls, which are rollably arranged at intervals at the upper end of the cylindrical filter portion 22, and the first balls abut against the top wall of the first annular groove 2112. The first balls revolve along the first annular groove 2112, thereby reducing friction, reducing wear and improving rotation flexibility.

[0065] like Figure 5As shown, in a preferred embodiment of the present invention, a second annular groove 224 with a downward opening is defined at the lower end of the cylindrical filter portion 22, and the second annular groove 224 is rotatably connected to the second annular portion 2121. Alternatively, a second annular groove 224 with an upward opening is defined at the upper end of the second annular portion 2121, and the second annular groove 224 is rotatably connected to the lower end of the cylindrical filter portion 22. The upper and lower ends of the cylindrical filter portion 22 rotate along the first and second annular grooves, respectively, to prevent the cylindrical filter portion 22 from becoming stuck.

[0066] like Figure 5 As shown, in a preferred embodiment of the present invention, an annular rib 2122 is provided at the upper end of the second annular portion 2121, and a plurality of second protrusions 2123 are provided at intervals on the upper end of the annular rib 2122. The second annular groove 224 and the annular rib 2122 are rotatably plugged in, and the second protrusions 2123 are in frictional contact with the top wall of the second annular groove 224, thereby reducing friction and wear and improving rotation flexibility.

[0067] In a preferred embodiment of the present invention, the filter 2 also includes a plurality of second balls, which are rollably arranged at intervals on the upper end of the second annular portion 2121, and the second balls abut against the top wall of the second annular groove 224, thereby reducing friction, reducing wear and improving rotation flexibility.

[0068] like Figure 8 As shown, in a preferred embodiment of the present invention, a plurality of first hollow holes 225 are opened at the lower end of the cylindrical filter portion 22, and the residue enters the drainage channel through the first hollow holes 225. A mounting portion 226 is provided in the center of the lower end of the cylindrical filter portion 22, and the follower 41 is provided on the mounting portion 226. The free end of the rotating shaft 311 passes through the first drain port 12 and extends into the cavity 11. The driving member 42 is installed on the free end of the rotating shaft 311. The axial direction of the rotating shaft 311 is horizontal, and the axial direction of the cylindrical filter portion 22 is vertical, perpendicular to the horizontal direction. The driven member 41 and the driving member 42 are both bevel gears, and the driven member 41 and the driving member 42 are meshed to achieve a 90-degree transmission connection.

[0069] like Figure 2 、 6 As shown in Figures 9 and 9, in a preferred embodiment of the present invention, the filter 2 further includes a lifting cup 23, which is disposed in the cylindrical filter portion 22. The upper portion of the lifting cup 23 is engaged with the upper frame 211, and the lifting cup 23 is provided with a plurality of second hollow holes 231. The second hollow holes 231 are used to filter large pieces of residue to prevent the large pieces of residue from clogging the mesh of the cylindrical filter portion 22 and clogging the drain pipe.

[0070] like Figure 9As shown, in a preferred embodiment of the present invention, the lower end of the upper frame 211 is provided with at least two first clamping portions 2113, and the upper end of the lower frame 212 is provided with a second clamping portion 2126 that cooperates with the first clamping portion 2113. The first clamping portion 2113 is clamped with the second clamping portion 2126 to achieve quick and convenient disassembly and assembly of the upper frame 211 and the lower frame 212.

[0071] For example, the first clamping portion 2113 is one of a clamping head and a clamping hole, and the second clamping portion 2126 is the other of the clamping head and the clamping hole.

[0072] The upper frame 211 and / or the lower frame 212 are elastic or plastic, so that the clamping head and the clamping hole can generate a certain deformation when being clamped or disassembled, so as to facilitate the clamping or separation.

[0073] like Figure 12 As shown, in a preferred embodiment of the present invention, an annular step 15 is provided at the lower portion of the inner wall of the cavity 11, and a third clamping portion 151 is radially extended from the inner edges of both ends of the annular step 15, and a fourth clamping portion 2125 is provided at the inner edge of the second annular portion 2121 corresponding to the third clamping portion 151. When the filter 2 is installed in place, the lower end face of the second annular portion 2121 abuts against the upper end face of the annular step 15, and the third clamping portion 151 is clamped with the fourth clamping portion 2125 to fix the filter 2.

[0074] For example, the fourth clamping portion 2125 is L-shaped, and there is a clamping groove between the fourth clamping portion 2125 and the inner edge of the second annular portion 2121. When the filter 2 is installed, the fourth clamping portion 2125 is first misaligned with the third clamping portion 151. When the lower end face of the second annular portion 2121 abuts against the upper end face of the annular step 15, the filter 2 is then rotated so that the clamping groove is plugged into the third clamping portion 15, thereby realizing radial and axial limitation of the filter 2.

[0075] like Figure 6 、 9 As shown, in a preferred embodiment of the present invention, the upper frame 211 is symmetrically provided with two fifth clamping portions 2114, and the upper end of the lifting cup 23 is symmetrically provided with two handles 232. The handles 232 are provided with a sixth clamping portion 2321 that cooperates with the fifth clamping portion 2114. When the lifting cup 23 is installed in place, the sixth clamping portion 2321 is clamped with the fifth clamping portion 2114 to fix the lifting cup 23 and prevent the lifting cup 23 from shaking in the radial and axial directions.

[0076] For example, the fifth engaging portion 2114 is one of a clamping head and a clamping hole, and the sixth engaging portion 2321 is the other of the clamping head and the clamping hole. When removing the cup 23, the thumb and index finger jointly grasp the two handles 232, causing the two handles 232 to radially contract, thereby separating the sixth engaging portion 2321 from the fifth engaging portion 2114.

[0077] like Figure 9 As shown, in a preferred embodiment of the present invention, two avoidance grooves 2115 are symmetrically provided at the upper end of the upper frame 211, and a circular portion 2322 is extended from the outer side of the upper end of the handle 232. When the sixth clamping portion 2321 is clamped with the fifth clamping portion 2114, the circular portion 2322 is inserted into the avoidance groove 2115, so that the upper frame 211 and the lifting cup 23 appear to be integrated in appearance, thereby improving the aesthetics. At the same time, the avoidance groove 2115 also has the function of supporting the lifting cup 23.

[0078] like Figure 13 As shown, the present invention also discloses a filter self-cleaning method, which is applied to the above-mentioned dishwasher. The operation panel of the dishwasher is provided with a normal washing mode module electrically connected to the controller and a separate filter self-cleaning mode module, wherein the normal washing mode includes a dishwashing rinse program and a drain cleaning program performed sequentially. The dishwasher also includes a water inlet valve and a water flow sensor electrically connected to the controller, and the water inlet valve and the water flow sensor are provided on the water inlet channel of the cavity 11. The filter self-cleaning method includes:

[0079] Receive the mode instruction selected by the user and enter the cleaning program of the corresponding mode according to the instruction;

[0080] After entering the normal washing mode, when the dishwashing process is completed, it enters the drainage and cleaning process;

[0081] The drain pump 3 is turned on, and the driving part 31 drives the impeller 32 and the active member 42 to rotate. The active member 42 drives the driven member 41 and the cylindrical filter portion 22 to rotate. When the impeller 32 rotates, the water in the cavity 11 is discharged through the first drain port 12 and the second drain port 131. The water pressure in the impeller cavity 132 is greater than the water pressure in the cavity 11. Part of the water in the impeller cavity 132 is sprayed in the opposite direction toward the side of the cylindrical filter portion 22 through the flushing hole 14 to flush the side of the cylindrical filter portion 22.

[0082] When the water level sensor detects that there is no water in the cavity 11, the drainage pump 3 is turned off and the drainage and cleaning program ends.

[0083] Alternatively, when the water level sensor detects that there is no water in the cavity 11, the drain pump 3 continues to run for 5-30 seconds and then turns off the drain pump 3, the drainage cleaning program ends, and continues to run for 5-30 seconds to enable the cylindrical filter part 22 to continue to rotate and shake off the residual water, thereby accelerating drying.

[0084] In a preferred embodiment of the present invention, the method further comprises:

[0085] When entering the single filter self-cleaning mode module, the water inlet valve opens, and when the water inlet volume reaches the preset water inlet volume L 进设1 When , the water inlet valve is closed;

[0086] The drain pump 3 is turned on, and the driving part 31 drives the impeller 32 and the active member 42 to rotate. The active member 42 drives the driven member 41 and the cylindrical filter portion 22 to rotate. When the impeller 32 rotates, the water in the cavity 11 is discharged through the first drain port 12 and the second drain port 131. The water pressure in the impeller cavity 132 is greater than the water pressure in the cavity 11. Part of the water in the impeller cavity 132 is sprayed in the opposite direction toward the side of the cylindrical filter portion 22 through the flushing hole 14 to flush the side of the cylindrical filter portion 22.

[0087] When the water in the cavity 11 is drained, the drain pump 3 is turned off and the single filter self-cleaning mode ends.

[0088] Alternatively, when the water in the cavity 11 is drained, the drain pump 3 continues to run for 5-30 seconds and then turns off, and the single filter self-cleaning mode ends.

[0089] In a preferred embodiment of the present invention, the method further comprises:

[0090] Before the water in the cavity 11 is drained, and the remaining water volume L in the cavity 11 剩设 When the water inlet valve is opened, water is introduced and drained to repeatedly flush the side circumference of the cylindrical filter portion 22 to improve the flushing effect. At the same time, the drain pump 3 is kept turned on and the cylindrical filter portion 22 is kept rotating.

[0091] When the water inflow reaches the preset water inflow L 进设2 When the water inlet valve is closed, the drainage pump 3 remains on, and the cylindrical filter portion 22 remains rotating;

[0092] When the water in the cavity 11 is drained, the drain pump 3 is turned off and the single filter self-cleaning mode ends.

[0093] Alternatively, when the water in the cavity 11 is drained, the drain pump 3 continues to run for 5-30 seconds and then turns off the drain pump 3.

[0094] The individual filter self-cleaning mode ends.

[0095] In a preferred embodiment of the present invention, the full running time of the single filter self-cleaning mode is 3-5 minutes, and the water intake L 进设1 and water inlet L 进设2 When the water volume is 2.5L, the cleaning effect and energy saving are the best. Of course, the full running time of the self-cleaning mode of the single filter is not limited to 3-5 minutes, and the water volume L 进设1 and water inlet L 进设2 It is not limited to 2.5 L, and those skilled in the art can select the operating time and water intake volume according to actual needs.

[0096] In a preferred embodiment of the present invention, when the remaining water volume L in the cavity 11 剩设When the water inlet valve is opened, water is introduced and drained to repeatedly flush the circumference of the cylindrical filter portion 22. This includes: when 10% to 30% of the water volume of the cavity 11 when it is full remains in the cavity 11, the water inlet valve is opened, and water is introduced and drained to repeatedly flush the circumference of the circumference of the cylindrical filter portion 22. When 30% of the water volume remains, the water flow through the flushing hole 14 begins to decrease. The less water remains, the lower the flushing force.

[0097] In the embodiments of the present invention, the term "plurality" refers to two or more, unless otherwise specified. Terms such as "installed," "connected," and "fixed" should be interpreted broadly. For example, "connected" can refer to a fixed connection, a detachable connection, or an integral connection. Those skilled in the art will understand the specific meanings of these terms in the embodiments of the present invention based on specific circumstances.

[0098] In the description of the embodiments of the present invention, it should be understood that the terms "upper" and "lower" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, rather than indicating or implying that the device or unit referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the embodiments of the present invention.

[0099] Throughout this specification, terms such as "one embodiment" and "a preferred embodiment" mean that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, schematic representations of these terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0100] The above is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations are possible in the present invention. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention are intended to be within the scope of protection of the present invention.

Claims

1. A dishwasher, characterized in that: include: A water cup (1), the water cup (1) having a cavity (11) with an opening facing upward, a first drain port (12) communicating with the cavity (11) being provided at the bottom of a side wall of the water cup (1), an annular seat (13) being provided on an outer side wall of the water cup (1) corresponding to the first drain port (12), and a second drain port (131) being provided on one side of the annular seat (13); A filter (2), the filter (2) being arranged in the cavity (11), the filter (2) comprising a main frame (21) and a cylindrical filter portion (22), the main frame (21) comprising an upper frame (211) and a lower frame (212), the upper frame (211) being snap-connected to the lower frame (212), the lower frame (212) being snap-connected to the inner wall of the cavity (11), and the axial ends of the cylindrical filter portion (22) being rotatably connected to the upper frame (211) and the lower frame (212); A drainage pump (3), the drainage pump (3) comprising a driving portion (31) and an impeller (32) mounted on a rotating shaft (311) of the driving portion (31), the driving portion (31) being mounted on the annular seat (13), and the driving portion (31), the annular seat (13) and the side wall of the water cup (1) jointly forming an impeller cavity (132) communicating with the cavity (11), the impeller (32) being located in the impeller cavity (132), the side wall of the water cup (1) being provided with at least one flushing hole (14) communicating with the impeller cavity (132) and the cavity (11), and the flushing hole (14) being opposite to a side portion of the cylindrical filter portion (22); and A transmission assembly (4), comprising a driven member (41) and a driving member (42), wherein the driven member (41) is mounted on the bottom of the cylindrical filter portion (22), the driving member (42) is mounted on the rotating shaft (311), and the driving member (42) is in transmission connection with the driven member (41).

2. The dishwasher according to claim 1, characterized in that The inner edge of the upper frame (211) is provided with a first annular portion (2111), the inner edge of the lower frame (212) is provided with a second annular portion (2121), and the axial ends of the cylindrical filter portion (22) are rotatably connected to the first annular portion (2111) and the second annular portion (2121).

3. The dishwasher according to claim 2, characterized in that The lower end of the first annular portion (2111) is provided with a first annular groove (2112) opening downward, and the upper end of the cylindrical filter portion (22) is plugged into the first annular groove (2112); alternatively, the upper end of the cylindrical filter portion (22) is provided with a first annular groove (2112) opening upward, and the lower end of the first annular portion (2111) can be rotatably plugged into the first annular groove (2112).

4. The dishwasher according to claim 3, characterized in that The upper end of the cylindrical filter portion (22) is provided with a plurality of first protrusions (221) at intervals, and the first protrusions (221) are in frictional contact with the top wall of the first annular groove (2112); and / or the inner wall of the upper end of the cylindrical filter portion (22) is provided with a plurality of first ribs (222) at intervals, and the first ribs (222) are in frictional contact with the side wall of the first annular groove (2112); or, the filter (2) further comprises a plurality of first balls, which are rollably provided at the upper end of the cylindrical filter portion (22), and the first balls are in contact with the top wall of the first annular groove (2112).

5. The dishwasher according to claim 3, characterized in that The lower end of the cylindrical filter portion (22) is provided with a second annular groove (224) with an opening facing downward, and the second annular groove (224) and the second annular portion (2121) are rotatably plugged in; or, the upper end of the second annular portion (2121) is provided with a second annular groove (224) with an opening facing upward, and the second annular groove (224) and the lower end of the cylindrical filter portion (22) are rotatably plugged in.

6. The dishwasher according to claim 5, characterized in that The upper end of the second annular portion (2121) is provided with an annular rib (2122), and the upper end of the annular rib (2122) is provided with a plurality of second protrusions (2123) at intervals, the second annular groove (224) and the annular rib (2122) are rotatably plugged into each other, and the second protrusions (2123) are in frictional contact with the top wall of the second annular groove (224); or, the filter (2) further comprises a plurality of second balls, the second balls being rollably provided on the upper end of the second annular portion (2121), and the second balls being in contact with the top wall of the second annular groove (224).

7. The dishwasher according to claim 1, characterized in that A plurality of first hollow holes (225) are provided at the lower end of the cylindrical filter portion (22), a mounting portion (226) is provided at the center of the lower end of the cylindrical filter portion (22), the driven member (41) is provided on the mounting portion (226), the free end of the rotating shaft (311) passes through the first drain port (12) and extends into the cavity (11), the active member (42) is installed on the free end of the rotating shaft (311), and both the driven member (41) and the active member (42) are bevel gears.

8. The dishwasher according to claim 2, characterized in that An annular step (15) is provided at the lower part of the inner wall of the cavity (11), and a third clamping portion (151) is radially extended from the inner edges of both ends of the annular step (15), and a fourth clamping portion (2125) is provided on the inner edge of the second annular portion (2121) corresponding to the third clamping portion (151). When the filter (2) is installed in place, the lower end face of the second annular portion (2121) abuts against the upper end face of the annular step (15), and the third clamping portion (151) is clamped with the fourth clamping portion (2125).

9. The dishwasher according to any one of claims 1 to 8, characterized in that: The filter (2) further comprises a lifting cup (23), the lifting cup (23) being arranged in the cylindrical filter portion (22), the upper portion of the lifting cup (23) being snap-connected with the upper frame (211), and the lifting cup (23) being provided with a plurality of second hollow holes (231).

10. A filter self-cleaning method, characterized in that: Applicable to the dishwasher according to any one of claims 1 to 9, wherein the operating panel of the dishwasher is provided with a normal washing mode module and a separate filter self-cleaning mode module, wherein the normal washing mode includes a dishwashing rinse process and a drain cleaning process performed sequentially, and the method comprises: Receive the mode instruction selected by the user and enter the cleaning program of the corresponding mode according to the instruction; After entering the normal washing mode, when the dishwashing program is finished, the drain cleaning program is entered, the drain pump (3) is turned on, the driving part (31) drives the impeller (32) and the active part (42) to rotate, and the active part (42) drives the driven part (41) and the cylindrical filter part (22) to rotate. When the impeller (32) rotates, the water in the cavity (11) is discharged through the first drain port (12) and the second drain port (131), the water pressure in the impeller cavity (132) is greater than the water pressure in the cavity (11), and part of the water in the impeller cavity (132) is sprayed in the opposite direction toward the side of the cylindrical filter part (22) through the flushing hole (14) to flush the side circumference of the cylindrical filter part (22); When the water in the cavity (11) is drained, the drainage pump (3) is turned off and the drainage cleaning program ends; or, when the water in the cavity (11) is drained, the drainage pump (3) continues to run for 5-30 seconds and then turns off the drainage pump (3), and the drainage cleaning program ends.

11. The filter self-cleaning method according to claim 10, characterized in that: The dishwasher further comprises a water inlet valve in communication with the cavity (11), and the method further comprises: When the single filter self-cleaning mode is entered, the water inlet valve is opened, and when the water inlet volume of the cavity (11) reaches the preset water inlet volume L 进设1 When , the water inlet valve is closed; The drainage pump (3) is turned on, the driving part (31) drives the impeller (32) and the active part (42) to rotate, and the active part (42) drives the driven part (41) and the cylindrical filter part (22) to rotate. When the impeller (32) rotates, the water in the cavity (11) is discharged through the first drainage port (12) and the second drainage port (131). The water pressure in the impeller cavity (132) is greater than the water pressure in the cavity (11). Part of the water in the impeller cavity (132) is sprayed in the opposite direction toward the side of the cylindrical filter part (22) through the flushing hole (14) to flush the side of the cylindrical filter part (22); When the water in the cavity (11) is drained, the drain pump (3) is turned off, and the self-cleaning mode of the separate filter ends; or, when the water in the cavity (11) is drained, the drain pump (3) continues to run for 5-30 seconds and then turns off, and the self-cleaning mode of the separate filter ends.

12. The filter self-cleaning method according to claim 11, characterized in that: Before the water in the cavity (11) is drained and the remaining water volume L 剩设 When the water inlet valve is opened, water is introduced and drained to repeatedly flush the side circumference of the cylindrical filter portion (22), and the drainage pump (3) remains open; When the water inflow reaches the preset water inflow L 进设2 When the water inlet valve is closed, the drainage pump (3) remains open; When the water in the cavity (11) is drained, the drain pump (3) is turned off, and the self-cleaning mode of the separate filter ends; or, when the water in the cavity (11) is drained, the drain pump (3) continues to run for 5-30 seconds and then turns off, and the self-cleaning mode of the separate filter ends.

13. The filter self-cleaning method according to claim 12, characterized in that: The full running time of the single filter self-cleaning mode is 3-5 minutes, and the water intake L 进设1 and the water inlet L 进设 2 are equal.

14. The filter self-cleaning method according to claim 12, characterized in that: The remaining water volume L 剩设 It is 10%-30% of the water volume when the cavity (11) is full of water.

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