Dish-washing machine filtering system, rotatable filter and dish-washing machine

Abstract

The invention provides a dish-washing machine filtering system, a rotatable filter and a dish-washing machine, and relates to the technical field of kitchen appliances, the dish-washing machine comprises the dish-washing machine filtering system, and specifically comprises a water tank and the rotatable filter; the rotatable filter comprises a cylindrical frame which is installed inside the water inlet of the water tank in a manner of being capable of rotating circumferentially relative to the water inlet of the water tank, and a filter screen is arranged on the circumferential surface of the cylindrical frame; the porous bottom plate is connected to the bottom of the cylindrical frame and covers the bottom opening of the cylindrical frame; the blades are fixedly or integrally connected to the cylindrical frame and / or the porous bottom plate, and the blades can be pushed by water flow passing through the filter screen to deflect so as to drive the cylindrical frame to circumferentially rotate relative to the water inlet of the water tank. The dish-washing machine can effectively reduce food residues from blocking the filter, improve the water passing efficiency of the dish-washing machine filter and food residue discharging and filtering, improve the cleaning effect of the whole dish-washing machine, reduce the frequency and necessity of cleaning the filter by a user, and improve the user experience.

Description

Technical Field

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

[0002] Dishwashers are usually equipped with two water pumps: a wash pump and a drain pump. When washing dishes, the wash pump is responsible for pumping the water in the sink after a single wash to the spray arm of the spray system to wash the dishes. The washed water is collected by the inner tank and then gathered in the sink for reciprocating circulation; after completing a washing cycle, or in some cases when the sewage needs to be discharged midway, the drain pump will discharge the dirty water in the sink out of the dishwasher. The dishwasher sink is equipped with a filtration system. The water collected in the inner tank must be purified by the filtration system before reaching the water pump. The filtration system collects food residues and prevents dirt from entering the water pump, thereby ensuring that the water sprayed by the water pump is relatively clean water. The filtration system includes a filter, the structure of which allows water to pass freely while leaving residues behind.

[0003] The current dishwasher filter is stationary relative to the dishwasher water pump water inlet when the dishwasher is running, and mainly includes a frame structure and a filter. The function of the filter is to leave the residue when the water passes through, and the frame is used to install the filter in a specific area of ​​the sink to filter the residue. Since the filter is stationary relative to the dishwasher water pump water inlet when working, after long-term use, the filter of the filter near the water pump water inlet is easily blocked by fine food residues. In addition, if a large amount of food residues accumulate at the bottom of the filter, it is also easy to block the filter, resulting in a large amount of food residues cannot be discharged from the dishwasher. When the water is inlet again, the food residues accumulated at the bottom of the filter and the fine food residues blocked on the filter seriously reduce the water flow efficiency of the filter, resulting in insufficient water pumping by the water pump, and insufficient water cannot enter the spray system, which will cause the spray arm speed to slow down, and the water column sprayed by the spray arm is insufficient, reducing the cleaning effect of the whole machine.

[0004] Based on the above problems, when using the dishwasher, in addition to regularly cleaning out food residues in the filter, users also need to regularly clean the filter to prevent the filter from becoming clogged, which results in a poor experience. Summary of the invention

[0005] The object of the present invention is to provide a dishwasher filter system, a rotatable filter and a dishwasher to alleviate the above technical problems existing in the prior art.

[0006] To achieve the above objectives, the embodiments of the present invention adopt the following technical solutions:

[0007] In a first aspect, an embodiment of the present invention provides a dishwasher filtering system, comprising a sink and a rotatable filter; the rotatable filter comprises a cylindrical frame, a porous bottom plate and at least one group of blades, specifically: the cylindrical frame is installed inside the water inlet of the sink in a manner that it can rotate circumferentially relative to the water inlet of the sink, and a filter screen is provided on the circumferential surface of the cylindrical frame; the porous bottom plate is connected to the bottom of the cylindrical frame and covers the bottom opening of the cylindrical frame; the blades are fixed or integrally connected to the cylindrical frame and / or the porous bottom plate, and the blades can be pushed and deflected by the water flow passing through the filter screen to drive the cylindrical frame to rotate circumferentially relative to the water inlet of the sink.

[0008] In a first optional embodiment, along the axial direction of the cylindrical frame: the blades are located inside the cylindrical frame and above the porous bottom plate.

[0009] In a second alternative embodiment, along the axial direction of the cylindrical frame: the blades are located outside the cylindrical frame and below the porous bottom plate.

[0010] In a third optional embodiment, along the axial direction of the cylindrical frame: the blades include upper blades and lower blades that are separately arranged, the upper blades are located inside the cylindrical frame and above the porous bottom plate, and the lower blades are located outside the cylindrical frame and below the porous bottom plate.

[0011] In a fourth optional embodiment, the blades penetrate the porous bottom plate along the axial direction of the cylindrical frame, the portion of the blades above the porous bottom plate is a curved surface inclined downward, and a slag discharge channel is provided at a portion of the porous bottom plate connected to the blades.

[0012] In any one of the first to fourth optional embodiments described above, the porous bottom plate is fixed or integrally connected to the bottom of the cylindrical frame; and the blades are fixedly connected to the inner wall of the cylindrical frame and / or the porous bottom plate.

[0013] Alternatively, in any of the first to fourth optional embodiments, the porous bottom plate is clamped to the bottom of the cylindrical frame and the porous bottom plate is positioned on the cylindrical frame in both the axial and circumferential directions along the cylindrical frame, and the blades are fixedly connected to the porous bottom plate. Further optionally, a blade fixing shaft is provided on the porous bottom plate, the blades are fixed or integrally connected to the outer circumferential surface of the blade fixing shaft, and a limiting flange protruding radially outward along the blade fixing shaft is connected to the top of the blade fixing shaft; a limiting boss protruding toward the inside of the cylindrical frame is provided on the inner surface of the cylindrical frame; and the limiting flange overlaps the upper surface of the limiting boss.

[0014] In any of the above optional embodiments, the rotation center axis of the blade deviates from the radial geometric center of the cylindrical frame on any radial cross section passing through the cylindrical frame.

[0015] In any of the above optional embodiments, the dishwasher filter system also includes a flat filter screen, a through hole for a rotatable filter to pass through is provided in the middle of the flat filter screen, and a friction plate is provided in the through hole; an outwardly protruding overlapping edge is connected to the outer wall of the cylindrical frame of the rotatable filter, and in the assembled state, the rotatable filter passes through the through hole and the overlapping edge overlaps the upper surface of the friction plate.

[0016] In any of the above optional embodiments, a tubular filter connection portion protruding downward is provided in the middle area of ​​the bottom surface of the porous bottom plate, and a first clamping portion is provided on the tubular filter connection portion. A tubular docking portion is connected to the inner wall of the water inlet of the water tank, and the lower end of the tubular docking portion is connected to the inside of the water tank, and a second clamping portion is provided on the tubular docking portion. The lower end of the tubular filter connection portion is sleeved on the upper end of the tubular docking portion, and the lower end of the first clamping portion is hook-fastened to the second clamping portion, and the first clamping portion can rotate relative to the second clamping portion around the central axis of the tubular docking portion.

[0017] In a further optional embodiment, the second clamping portion is an annular track extending along the circumference of the tubular docking portion and protruding from the peripheral wall of the tubular docking portion. The lower end of the first clamping portion contacts the lower surface of the annular track. A plurality of track protrusions are provided on the lower surface of the annular track at intervals along the circumference of the tubular docking portion, and both end surfaces of each track protrusion along the circumference of the tubular docking portion are guide slopes.

[0018] In a second aspect, an embodiment of the present invention provides a rotatable filter, which is applied to the dishwasher filter system provided in any one of the embodiments of the first aspect.

[0019] In a third aspect, an embodiment of the present invention provides a dishwasher, comprising the dishwasher filter system provided by any one of the embodiments of the first aspect.

[0020] In particular, in the embodiments of the present invention, "and / or" means that the first feature before "and / or" and the second feature after "and / or" include the following specific settings: (1) only the first feature is set, and the second feature is not set; (2) only the second feature is set, and the first feature is not set; (3) the first feature and the second feature are set at the same time.

[0021] The dishwasher filter system, rotatable filter and dishwasher provided by the embodiments of the present invention can at least achieve the following beneficial effects:

[0022] The embodiment of the present invention, by providing a rotatable filter in conjunction with the sink, can effectively reduce the clogging of the filter by food residues, improve the water flow efficiency of the dishwasher filter and the discharge of food residues from the filter, thereby improving the cleaning effect of the entire dishwasher, reducing the frequency and necessity of users cleaning the filter, and even completely avoiding cleaning the food residues in the filter when the volume of food residues initially put into the dishwasher is small, thereby improving the user experience. For the design principles and more detailed effect descriptions of the embodiments of the present invention, please refer to the specific implementation method section of this application. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 A schematic diagram of the overall structure from one viewing angle when the dishwasher filter system provided by an embodiment of the present invention is installed in the inner tank of the dishwasher;

[0025] Figure 2 A half-section schematic diagram of the overall structure from another perspective when the dishwasher filter system provided by an embodiment of the present invention is installed in the inner tank of the dishwasher;

[0026] Figure 3 A schematic diagram of a half-section structure of a water tank near a water inlet in an optional implementation manner of a dishwasher filter system provided by an embodiment of the present invention;

[0027] Figure 4 A schematic diagram of a half-section structure of a water tank near a water inlet in another optional implementation of a dishwasher filter system provided in an embodiment of the present invention;

[0028] Figure 5 for Figure 4 A magnified view of the local structure of the middle A area;

[0029] Figure 6 A schematic diagram of a half-section structure of a flat filter screen in a dishwasher filter system provided by an embodiment of the present invention;

[0030] Figure 7 This is a schematic diagram of the overall structure of the rotatable filter at one viewing angle in a first optional implementation manner of an embodiment of the present invention;

[0031] Figure 8 for Figure 7 The overall structural schematic diagram of the rotatable filter shown in another viewing angle;

[0032] Fig. 9 This is a schematic diagram of the overall structure of the rotatable filter at one viewing angle in a second optional implementation manner of an embodiment of the present invention;

[0033] Fig.10 for Fig. 9 The overall structural schematic diagram of the rotatable filter shown in another viewing angle;

[0034] Fig.11 A half-section schematic diagram of the overall structure of the rotatable filter at one viewing angle in a third optional implementation manner of an embodiment of the present invention;

[0035] Fig.12 for Fig.11 A schematic diagram of the structure of the structural parts arranged inside the cylindrical frame of the rotatable filter shown in another perspective;

[0036] Fig.13 for Fig.11 A schematic structural diagram of a cylindrical frame in a rotatable filter is shown.

[0037] Icons: 1- liner; 2- flat filter; 201- perforation; 21- friction plate; 3- rotatable filter; 31- cylindrical frame; 311- overlapping edge; 312- limiting boss; 313- snap-in hole; 32- filter; 33- blade; 331- upper blade; 332- lower blade; 34- porous bottom plate; 3401- slag discharge channel; 341- tubular filter connection; 3411- first snap-in part; 342- buckle; 35- blade fixing shaft; 351- limiting flange; 4- sink; 401- drain outlet; 402- washing pump outlet; 41- tubular docking part; 411- second snap-in part; 4111- track protrusion; 41110- guide slope. DETAILED DESCRIPTION

[0038] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0039] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0040] It should be noted that like reference numerals and letters denote similar items in the drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0041] In the description of the present invention, it should be noted that:

[0042] Unless otherwise clearly specified and limited, the terms "disposed", "installed" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be a communication between the two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0043] The orientation or position relationship indicated by the terms "upper", "lower", "top", "bottom", "inside", "outside", etc. is based on the orientation or position relationship shown in the drawings, or is the orientation or position relationship in which the product of the invention is usually placed when used. It is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0044] The terms "first", "second", "third", etc. are only used for distinguishing descriptions and do not indicate the total number or relative position in time and / or space, and should not be understood as indicating or implying relative importance.

[0045] Some embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the absence of conflict, the features of the following embodiments and the optional embodiments in the embodiments can be combined with each other.

[0046] Embodiment 1

[0047] This embodiment provides a dishwasher filter system, referring to Figures 1 to 5The dishwasher filtering system includes a water tank 4 and a rotatable filter 3, which is installed in the dishwasher and cooperates with the inner tank 1, washing pump and drainage pump of the dishwasher when in use. The specific installation position is: the sink 4 is located below the inner tank 1, and the two are connected through the water inlet of the sink 4; the rotatable filter 3 is installed inside the water inlet of the sink 4 in a manner that it can rotate circumferentially relative to the water inlet of the sink 4; the sink 4 is connected to the respective water inlets of the washing pump and the drainage pump, the dishwasher introduces fresh water from the water supply pipe, which is pumped to the spray arm of the spray system through the washing pump to spray on the inner tank 1 to wash the dishes, and the washed water passes through the rotatable filter 3 from the inner tank 1 and is gathered into the sink 4 from the water inlet of the sink 4, the washing pump extracts the water in the sink 4 after a single washing and transports it to the spray arm of the spray system through the washing pump outlet 402 to wash the dishes, and the washed water is collected by the inner tank 1 and then collected by the rotatable filter 3 to the sink 4 for reciprocating circulation; after completing a cleaning cycle, or in some cases when sewage needs to be discharged midway, the drainage pump will discharge the dirty water in the sink 4 out of the dishwasher through the drainage outlet 401 of the sink 4.

[0048] Among them, the rotatable filter 3 includes a cylindrical frame 31, a porous bottom plate 34 and at least one group of blades 33. Specifically: the cylindrical frame 31 is installed inside the water inlet of the water tank 4 in a manner that it can rotate circumferentially relative to the water inlet of the water tank 4, and a filter screen 32 is provided on the circumferential surface of the cylindrical frame 31; the porous bottom plate 34 is connected to the bottom of the cylindrical frame 31 and covers the bottom opening of the cylindrical frame 31; the blades 33 are fixed or integrally connected to the cylindrical frame 31 and / or the porous bottom plate 34, and the blades 33 can be pushed and deflected by the water flow passing through the filter screen 32 to drive the cylindrical frame 31 to rotate circumferentially relative to the water inlet of the water tank 4.

[0049] This embodiment can effectively reduce the clogging of the filter by food residues, improve the water flow efficiency of the dishwasher filter and the discharge of food residues from the filter, improve the cleaning effect of the entire dishwasher, reduce the frequency and necessity of users cleaning the filter, and even completely avoid cleaning the food residues in the filter when the volume of food residues initially put into the dishwasher is small, thereby improving the user experience. Specifically, during the washing process, when the water flow acts on the blades 33, the blades 33 may be deflected under the action of the water flow, thereby driving the rotatable filter 3 to rotate as a whole, so that the water flow passes through the entire circumference of the filter 32, thereby preventing the filter 32 from having a fixed-direction water flow channel for a long time, causing fine residues to be adsorbed on the filter 32, and improving the water flow efficiency of the filter 32. The user does not need to frequently clean the filter 32 to avoid the problem of reducing the speed of the spray arm and the force of the water column sprayed due to the blockage of the filter 32, thereby improving the washing efficiency of the whole machine; at the same time, during the overall rotation of the rotatable filter 3, the food residue inside it will be suspended in the water as much as possible instead of accumulating at the bottom, and finally, under the action of the drainage pump, as much as possible will be discharged from the dishwasher through the porous bottom plate 34 via the drainage port 401, which can effectively avoid the accumulation of food residues at the bottom of the rotatable filter 3, more food residues will be discharged, and the water will be cleaner when the water is filled for washing next time, reducing the risk of secondary contamination of tableware, thereby improving the cleaning effect of the whole machine. Furthermore, the frequency and necessity of the user cleaning the filter is reduced. When the volume of food residue initially put into the dishwasher is small, cleaning the food residue in the filter can even be completely avoided.

[0050] In this embodiment, the specific installation position and installation scheme of the blade 33 relative to the porous bottom plate 34 include at least four optional implementations as follows:

[0051] In the first optional embodiment, along the axial direction of the cylindrical frame 31: the blades 33 are located inside the cylindrical frame 31 and above the porous bottom plate 34. During washing, under the suction of the washing pump, water flows to the washing pump outlet 402, and the blades 33 are deflected under the force of the water flow sucked by the washing pump, thereby driving the entire rotatable filter 3 to rotate relative to the water inlet of the water tank 4, and the position of the washing pump outlet 402 is fixed relative to the water tank 4, so that during the water pumping process of the washing pump, water flows through the entire circumference of the filter 32, avoiding the filter 32 having a fixed direction of water flow channel for a long time, causing fine residues to be adsorbed on the filter 32, and improving the water flow efficiency of the filter 32. Users do not need to frequently clean the filter 32 to avoid the problem of reducing the working efficiency of the washing pump due to the blockage of the filter 32, thereby reducing the rotation speed of the spray arm and the force of the water column, thereby improving the washing effect of the whole machine;

[0052] In the second optional embodiment, along the axial direction of the cylindrical frame 31: the blades 33 are located outside the cylindrical frame 31 and below the porous bottom plate 34. When draining, under the action of the drainage pump, the water in the water tank 4 passes through the porous bottom plate 34 to reach the drain port 401, and then is discharged out of the dishwasher by the drainage pump. The blades 33 rotate under the action of the water flow, and the food residues in the rotatable filter 3 are suspended in the water due to the rotation of the rotatable filter 3 as a whole, and avoid being accumulated on the porous bottom plate 34. In this way, the food residues are easier to be discharged, reducing the frequency of the user needing to regularly clean the food residues in the filter. In the case where the volume of the food residues initially put into the dishwasher is small, it is even possible to completely avoid cleaning the food residues in the filter.

[0053] In a third alternative embodiment, referring to Figure 7 and Figure 8 , along the axial direction of the cylindrical frame 31: the blade 33 includes an upper blade 331 and a lower blade 332 which are separately arranged, the upper blade 331 is located inside the cylindrical frame 31 and above the porous bottom plate 34, and the lower blade 332 is located outside the cylindrical frame 31 and below the porous bottom plate 34. The rotation process relative to the water tank 4 during washing and draining is referred to the first and second optional embodiments.

[0054] In a fourth alternative embodiment, referring to Figures 9 to 13 Along the axial direction of the cylindrical frame 31, the blades 33 penetrate the porous bottom plate 34, and the portion of the blades 33 located above the porous bottom plate 34 is a curved surface inclined downward. A slag discharge channel 3401 is provided at a portion of the porous bottom plate 34 connected to the blades 33. Similarly, the rotation process relative to the sink 4 during washing and draining refers to the first and second optional embodiments described above, with the difference being that, in this optional embodiment, the portion of the blade 33 located above the porous bottom plate 34 is arranged to be a downwardly inclined curved surface, and a residue discharge channel 3401 is provided at a portion of the porous bottom plate 34 connected to the blade 33. During the washing process, under the action of the washing pump, when the rotatable filter 3 rotates, larger residues are squeezed downward by the upper portion of the blade 33 under the action of centrifugal force, and finally enter the drainage pump working area at the bottom of the sink 4 through the residue discharge channel 3401, thereby transporting the residue to the drain port 401 at the bottom of the sink 4 as much as possible during the washing process, further reducing the risk of the filter screen 32 and the porous bottom plate 34 being blocked by residues during the washing process, and accumulating the residue as much as possible in the drainage pump working area at the bottom of the sink 4, which is also more conducive to discharging as much residue as possible during drainage.

[0055] In any of the first to fourth optional embodiments above, further, referring to Figures 7 to 10 The porous bottom plate 34 is fixed or integrally connected to the bottom of the cylindrical frame 31 ; the blades 33 are fixedly connected to the inner wall of the cylindrical frame 31 and / or the porous bottom plate 34 .

[0056] Alternatively, in any of the first to fourth optional embodiments described above, further, the blade 33 is fixedly connected to the porous bottom plate 34; the porous bottom plate 34 is clamped to the bottom of the cylindrical frame 31 and the porous bottom plate 34 is positioned on the cylindrical frame 31 in both the axial direction and the circumferential direction along the cylindrical frame 31, referring to Figures 11 to 13 Taking the fourth optional implementation as an example, a plurality of clips 342 are provided on the bottom edge of the porous bottom plate 34, and a plurality of snap holes 313 are provided at the bottom of the cylindrical frame 31. The clips 342 of the porous bottom plate 34 are snapped into the snap holes 313 at the bottom of the cylindrical frame 31 one by one, so that the porous bottom plate 34 is snapped into the bottom of the cylindrical frame 31 and the porous bottom plate 34 is positioned on the cylindrical frame 31 in both the axial and circumferential directions along the cylindrical frame 31. However, those skilled in the art should know that this snap connection form is only a setting form in which two components are snapped into each other. This embodiment also includes other optional implementation forms to realize snap connection by providing other optional matching snap connection structures on both the porous bottom plate 34 and the bottom of the cylindrical frame 31. Further optionally, a blade fixing shaft 35 is provided on the porous bottom plate 34, the blade 33 is fixed or integrally connected to the outer peripheral surface of the blade fixing shaft 35, and the top end of the blade fixing shaft 35 is connected to a limiting flange 351 which protrudes radially outward along the blade fixing shaft 35; the inner surface of the cylindrical frame 31 is provided with a limiting boss 312 which protrudes toward the inside of the cylindrical frame 31; the limiting flange 351 is overlapped on the upper surface of the limiting boss 312, so as to further position the blade 33 relative to the cylindrical frame 31 through the limiting flange 351 and the limiting boss 312.

[0057] In this embodiment, the rotation center axis of the blade 33 coincides with the radial geometric center of the cylindrical frame 31 on any radial section passing through the cylindrical frame 31, or the rotation center axis of the blade 33 deviates from the radial geometric center of the cylindrical frame 31 on any radial section passing through the cylindrical frame 31, wherein, as a more effective implementation, the rotation center axis of the blade 33 deviates from the radial geometric center of the cylindrical frame 31 on any radial section passing through the cylindrical frame 31. In this structure, due to the offset of the rotation center of the blade 33, when the blade 33 rotates, the centrifugal force generated will be stronger and more unevenly distributed, and this uneven centrifugal force helps to throw heavier food residues to the edge area of ​​the cylindrical frame 31 faster and more thoroughly, reducing the accumulation of these residues near the blade 33, and further reducing the risk of clogging. In addition, this design allows the water flow to form a vortex effect when passing through the rotatable filter 3, and this vortex helps to take the residues away from the porous bottom plate 34 and the surface of the filter 32, so as to facilitate discharge from the dishwasher. In particular, the eccentric design of the blade 33 can also prevent the problem of the rotatable filter 3 being unable to rotate when the upper and lower parts of the blade 33 are subjected to the same force, when the aforementioned blade 33 includes a portion located above and below the porous bottom plate 34 (including an upper blade 331 and a lower blade 332, or a blade structure that penetrates the porous bottom plate 34 along the height direction).

[0058] Reference Figures 1 to 5 In any of the above optional implementations of this embodiment, the dishwasher filter system also includes a flat filter 2. Further, referring to Figure 6 The plane filter screen 2 is provided with a through hole 201 in the middle for the rotatable filter 3 to pass through, and a friction plate 21 is provided in the through hole 201; Figures 7 to 13 The outer wall of the cylindrical frame 31 of the rotatable filter 3 is connected with an outwardly protruding overlap edge 311. In the assembled state, the rotatable filter 3 passes through the through hole 201, and the overlap edge 311 of the outer wall of the cylindrical frame 31 overlaps the upper surface of the friction plate 21. The friction plate 21 provided on the plane filter 2 cooperates with the overlap edge 311 of the outer wall of the cylindrical frame 31, which can reduce the friction force when the rotatable filter 3 rotates, and the rotatable filter 3 is easier to rotate, so as to further improve the water passing efficiency and slag discharge capacity of the filter.

[0059] In addition, refer to Figures 1 to 5 , Figures 8 to 10In any of the above optional implementations of this embodiment, a tubular filter connection portion 341 protruding downward is provided in the middle area of ​​the bottom surface of the porous bottom plate 34, and a first clamping portion 3411 is provided on the tubular filter connection portion 341. A tubular docking portion 41 is connected to the inner wall of the water inlet of the water tank 4, and the lower end of the tubular docking portion 41 is communicated with the inside of the water tank 4, and a second clamping portion 411 is provided on the tubular docking portion 41. The lower end of the tubular filter connecting portion 341 is sleeved on the upper end of the tubular docking portion 41 (the sleeved method includes inserting the lower end of the tubular filter connecting portion 341 into the upper end of the tubular docking portion 41, or inserting the upper end of the tubular docking portion 41 into the lower end of the tubular filter connecting portion 341), and the lower end of the first clamping portion 3411 is hook-fastened to the second clamping portion 411, and the first clamping portion 3411 can rotate around the central axis of the tubular docking portion 41 relative to the second clamping portion 411, thereby realizing the circumferential rotation of the rotatable filter 3 relative to the water inlet of the water tank 4 without axial separation from each other, thereby improving the structural reliability.

[0060] In a further optional embodiment, referring to Figure 4 and Figure 5 The second clamping portion 411 of the water tank 4 is an annular track extending along the circumference of the tubular docking portion 41 and protruding from the peripheral wall of the tubular docking portion 41. In the assembled state, the lower end of the first clamping portion 3411 of the rotatable filter 3 contacts the lower surface of the annular track, and a plurality of track protrusions 4111 are provided on the lower surface of the annular track at intervals along the circumference of the tubular docking portion 41, and both end surfaces of each track protrusion 4111 along the circumference of the tubular docking portion 41 are guide slopes 41110. In this structure, by providing such a plurality of track protrusions 4111, when the rotatable filter 3 rotates circumferentially, on the basis of the hook-type buckling of the lower end of the first clamping portion 3411 on the second clamping portion 411, the guide slope 41110 passes through each track protrusion 4111, so that the rotatable filter 3 rotates circumferentially while moving up and down in the height direction relative to the annular track where the second clamping portion 411 is located, thereby achieving an effect similar to that of a vibrating filter, so that residues are less likely to accumulate at the bottom of the rotatable filter 3, and it will be easier to discharge the residues out of the dishwasher when draining water.

[0061] Embodiment 2

[0062] This embodiment provides a rotatable filter 3, which is applied to the dishwasher filter system provided by any optional implementation manner in the first embodiment. The beneficial effects that can be achieved by the rotatable filter 3 are referred to the first embodiment.

[0063] Embodiment 3

[0064] This embodiment provides a dishwasher, which includes the dishwasher filter system provided by any optional implementation manner of the first embodiment. The beneficial effects that can be achieved by the dishwasher are referred to in the first embodiment.

[0065] Finally, it should be noted that the above embodiments and their optional implementation modes in this specification are only used to illustrate the technical solutions of the present invention, rather than to limit them. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned optional implementation modes, or replace some or all of the technical features therein by equivalents. These modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention. In addition, it is emphasized again that the features of the embodiments in this specification and the optional implementation modes in the embodiments can be combined with each other without conflict.

Claims

1. A dishwasher filter system, characterized in that: It comprises a water tank (4) and a rotatable filter (3); the rotatable filter (3) comprises: A cylindrical frame (31) is installed inside the water inlet of the water tank (4) in a manner capable of circumferentially rotating relative to the water inlet of the water tank (4), and a filter screen (32) is provided on the circumferential surface of the cylindrical frame (31); A porous bottom plate (34) connected to the bottom of the cylindrical frame (31) and covering the bottom opening of the cylindrical frame (31); and at least one group of blades (33), wherein the blades (33) are fixed or integrally connected to the cylindrical frame (31) and / or the porous bottom plate (34), and the blades (33) can be pushed and deflected by the water flow passing through the filter screen (32) to drive the cylindrical frame (31) to rotate circumferentially relative to the water inlet of the water tank (4).

2. The dishwasher filter system according to claim 1, characterized in that: Along the axial direction of the cylindrical frame (31): the blades (33) are located inside the cylindrical frame (31) and above the porous bottom plate (34).

3. The dishwasher filter system according to claim 1, characterized in that: Along the axial direction of the cylindrical frame (31): the blades (33) are located outside the cylindrical frame (31) and below the porous bottom plate (34).

4. The dishwasher filter system according to claim 1, characterized in that: Along the axial direction of the cylindrical frame (31): the blade (33) includes an upper blade (331) and a lower blade (332) which are separately arranged, the upper blade (331) is located inside the cylindrical frame (31) and above the porous bottom plate (34), and the lower blade (332) is located outside the cylindrical frame (31) and below the porous bottom plate (34).

5. The dishwasher filter system according to claim 1, characterized in that: Along the axial direction of the cylindrical frame (31), the blade (33) passes through the porous bottom plate (34); the portion of the blade (33) located above the porous bottom plate (34) is a curved surface inclined downward; and a slag discharge channel (3401) is provided at a portion of the porous bottom plate (34) connected to the blade (33).

6. The dishwasher filter system according to any one of claims 2 to 5, characterized in that: The porous bottom plate (34) is fixed or integrally connected to the bottom of the cylindrical frame (31); the blades (33) are fixedly connected to the inner wall of the cylindrical frame (31) and / or the porous bottom plate (34).

7. The dishwasher filter system according to any one of claims 2 to 5, characterized in that: The porous bottom plate (34) is clamped to the bottom of the cylindrical frame (31) and is positioned on the cylindrical frame (31) in both the axial and circumferential directions of the cylindrical frame (31), and the blades (33) are fixedly connected to the porous bottom plate (34).

8. The dishwasher filter system according to claim 7, characterized in that: The porous bottom plate (34) is provided with a blade fixing shaft (35), the blade (33) is fixed or integrally connected to the outer peripheral surface of the blade fixing shaft (35), and the top end of the blade fixing shaft (35) is connected to a limiting flange (351) protruding radially outward along the blade fixing shaft (35); The inner surface of the cylindrical frame (31) is provided with a limiting boss (312) protruding toward the inside of the cylindrical frame (31); The limiting flange (351) overlaps the upper surface of the limiting boss (312).

9. The dishwasher filter system according to claim 1, characterized in that: The rotation center axis of the blade (33) deviates from the radial geometric center of the cylindrical frame (31) on any radial cross section passing through the cylindrical frame (31).

10. The dishwasher filter system according to claim 1, characterized in that: The dishwasher filter system also includes a planar filter screen (2), wherein a through hole (201) is provided in the middle of the planar filter screen (2) for the rotatable filter (3) to pass through, and a friction plate (21) is provided in the through hole (201); an outwardly protruding overlap edge (311) is connected to the outer wall of the cylindrical frame (31) of the rotatable filter (3); in an assembled state, the rotatable filter (3) passes through the through hole (201), and the overlap edge (311) overlaps the upper surface of the friction plate (21).

11. The dishwasher filter system according to claim 1, characterized in that: A tubular filter connection portion (341) protruding downward is provided in the middle area of ​​the bottom surface of the porous bottom plate (34), and a first clamping portion (3411) is provided on the tubular filter connection portion (341); A tubular docking portion (41) is connected to the inner wall of the water inlet of the water tank (4), the lower end of the tubular docking portion (41) is in communication with the interior of the water tank (4), and a second clamping portion (411) is provided on the tubular docking portion (41); The lower end of the tubular filter connecting portion (341) is sleeved on the upper end of the tubular docking portion (41), and the lower end of the first clamping portion (3411) is hook-fastened to the second clamping portion (411), and the first clamping portion (3411) can rotate relative to the second clamping portion (411) around the central axis of the tubular docking portion (41).

12. The dishwasher filter system according to claim 11, characterized in that: The second clamping portion (411) is an annular track extending along the circumference of the tubular docking portion (41) and protruding from the peripheral wall of the tubular docking portion (41). The lower end of the first clamping portion (3411) contacts the lower surface of the annular track. A plurality of track protrusions (4111) are provided on the lower surface of the annular track at intervals along the circumference of the tubular docking portion (41), and both end surfaces of each track protrusion (4111) along the circumference of the tubular docking portion (41) are guide slopes (41110).

13. A rotatable filter (3), characterized in that: A dishwasher filter system applied to any one of claims 1 to 12.

14. A dishwasher, characterized in that: A dishwasher filter system comprising the filter system of any one of claims 1 to 12.

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