Self-cleaning system and dish-washing machine thereof

Abstract

The self-cleaning system comprises a cleaning ring assembly and / or a shunt valve assembly, the cleaning ring assembly is provided with an annular cavity, a cleaning water inlet communicated with the annular cavity and a plurality of spraying holes communicated with the annular cavity, and the water outlet direction of the spraying holes faces the central axis of the cleaning ring assembly; the shunt valve assembly comprises a valve seat with a water inlet, a shifting piece and a gushing arm support, the gushing arm support is arranged at the top of the valve seat and provided with a self-cleaning water supply port and a gushing arm water supply port, and the shifting piece is rotatably arranged in the valve seat and provided with a water through hole for water flow to pass through. And the water inlet is selectively communicated with the self-cleaning water supply port or the spraying arm water supply port through the water through hole. According to the self-cleaning system disclosed by the utility model, the self-cleaning of the filtering component can be realized.

Description

Technical Field

[0001] The utility model relates to the technical field of dishwashers, in particular to a self-cleaning system and a dishwasher thereof. Background Art

[0002] At present, the filter device of the dishwasher is generally composed of a plane filter, a cylindrical filter and a micro filter. The existing filter device has the following shortcomings:

[0003] 1. During the washing cycle of the dishwasher, due to the strong suction of the washing pump, a large number of small particles of pollutants will be attached to the microfilter near the water inlet of the washing pump. Such pollutants are difficult to clean and reduce the water flow area of ​​the microfilter, resulting in empty suction of the washing pump, which greatly reduces the washing efficiency;

[0004] 2. Since the attached pollutants are difficult to clean, the microfilter needs to be manually removed for washing, which is not only troublesome to operate, but also affects the user experience;

[0005] 3. The general water diversion valve has only two channels, the upper and lower tableware washing channels, and no special filter self-cleaning water channel is set. If the filter self-cleaning water channel is shared with the tableware washing water channel, the water pressure of the tableware washing outlet will be affected, resulting in unclean tableware washing. Summary of the invention

[0006] The utility model aims to solve at least one of the problems existing in the existing related technologies to a certain extent. To this end, the utility model proposes a self-cleaning system that can realize self-cleaning of the filter assembly without the user having to manually remove the filter assembly for cleaning. The utility model also provides a dishwasher.

[0007] According to the self-cleaning system provided above, it is implemented through the following technical solutions:

[0008] A self-cleaning system comprises: a cleaning ring assembly, comprising a cleaning ring body and an upper cover, wherein the cleaning ring body has an annular groove opening upward, the upper cover is detachably connected to the top of the cleaning ring body and covers the upward opening of the annular groove, the upper cover and the annular groove are enclosed to form an annular cavity, a cleaning water inlet connected to the annular cavity is provided on the upper cover or the cleaning ring body, a plurality of spray holes connected to the annular cavity are provided on the bottom and / or the inner side wall of the cleaning ring body, the spray holes The water outlet direction of the perforation is toward the central axis of the cleaning ring body; and / or a water diversion valve assembly, including a valve seat, a paddle and a spray arm support, the valve seat has a water inlet, the spray arm support is arranged on the top of the valve seat and has a self-cleaning water supply port and a spray arm water supply port, the paddle is rotatably arranged in the valve seat and has a water hole for water flow to pass through, the water inlet is selectively connected with the self-cleaning water supply port or the spray arm water supply port through the water hole, and the self-cleaning water supply port is used to provide cleaning water for the parts to be self-cleaned.

[0009] In some embodiments, the cleaning ring assembly further includes a connecting pipe, and the cleaning water inlet is connected to the self-cleaning water supply port through the connecting pipe.

[0010] In some embodiments, the cleaning ring body and the upper cover are detachably connected via a snap-fit ​​structure and / or fasteners.

[0011] In some embodiments, the snap-fit ​​structure includes snap-fit ​​holes and undercuts, a plurality of undercuts are circumferentially spaced at the upper end of the outer wall of the cleaning ring body, the upper cover is provided with snap-fit ​​holes at positions corresponding to the undercuts, and the snap-fit ​​holes are snap-fitted with the corresponding undercuts.

[0012] In some embodiments, the cleaning ring assembly further includes a sealing member, and the cleaning ring body and the upper cover are sealedly connected via the sealing member.

[0013] In some embodiments, limiting steps are respectively formed at the upper ends of two opposite groove walls of the annular groove, and the sealing member is pressed against the limiting steps by the upper cover and has an interference fit with the cleaning ring body.

[0014] In some embodiments, at least one annular rib extending downward is provided on the bottom surface of the top plate of the upper cover, and an annular groove is recessed at the top of the seal at a position corresponding to the annular rib, and the annular groove is sleeved outside the annular rib and has an interference fit with the annular rib.

[0015] In some embodiments, the water diversion valve assembly further includes a driver and a rotating shaft, wherein the driver is disposed outside the valve seat, one end of the rotating shaft is connected to an output end of the driver, and the other end extends into the valve seat and is transmission-connected to the paddle.

[0016] In some embodiments, it also includes: a water cup assembly, having an upwardly opening water collecting chamber and a water diversion area; a filter assembly, arranged in the water collecting chamber and snap-connected with the water cup assembly; and a cleaning ring assembly is provided at the opening of the water collecting chamber and is sleeved on the outside of the filter assembly, the water outlet direction of the injection hole is toward the filter assembly, and / or a water diversion valve assembly is provided at the water diversion area, the water inlet is connected to the water collecting chamber, and the self-cleaning water supply port is used to provide cleaning water for the components to be self-cleaned, wherein the components to be self-cleaned include the filter assembly.

[0017] In some embodiments, an annular flange extending outward and located above the cleaning ring assembly is fixedly provided on the outer side wall of the upper end of the filter assembly, and the upper cover of the cleaning ring assembly is clamped between the annular flange and the top of the water cup assembly.

[0018] In some embodiments, a first positioning structure and / or a second positioning structure is provided between the cleaning ring assembly and the water cup assembly.

[0019] According to the dishwasher provided above, it is implemented through the following technical solution: a dishwasher, which includes an inner tank assembly and a self-cleaning system as described above.

[0020] Compared with the prior art, the present invention has at least the following beneficial effects:

[0021] 1. The self-cleaning system of the utility model is provided with a plurality of spray holes at the bottom and / or the inner wall of the cleaning ring assembly, each of which is configured to spray water toward the filter assembly, so that the filter assembly can be self-cleaned by the cleaning ring assembly without the need for the user to manually remove the filter assembly for cleaning, thereby improving the user experience;

[0022] 2. The self-cleaning system of the utility model provides a filter assembly self-cleaning water path and a tableware washing water path that are independent of each other on the water diversion valve assembly. This does not affect the water pressure of the tableware washing outlet, thereby ensuring that the tableware is washed cleanly, and can also ensure the water pressure of the filter assembly self-cleaning, so that the filter assembly can be rinsed clean. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is an exploded view of the self-cleaning system in an embodiment of the utility model;

[0024] Figure 2 It is a structural schematic diagram of the self-cleaning system in an embodiment of the utility model;

[0025] Figure 3 is a cross-sectional view of a self-cleaning system in an embodiment of the utility model;

[0026] Figure 4 is an exploded view of a cleaning ring assembly in an embodiment of the utility model;

[0027] Figure 5 It is an exploded view of the cleaning ring assembly in another direction in the embodiment of the utility model;

[0028] Figure 6 is a cross-sectional view of a cleaning ring assembly in an embodiment of the utility model;

[0029] Figure 7 It is a cross-sectional view of the self-cleaning system in another direction in the embodiment of the utility model;

[0030] Figure 8 This is a cross-sectional view of the water diversion valve assembly in the embodiment of the utility model with the spray arm support hidden;

[0031] Fig. 9 is a cross-sectional view of a dishwasher in an embodiment of the utility model;

[0032] Fig.10 yes Fig. 9 A partial enlarged view of part A.

[0033] In the figure: 1-cleaning ring assembly, 10-annular cavity, 11-cleaning ring body, 110-inclined surface, 111-annular groove, 112-cleaning water inlet, 113-injection hole, 114-undercut, 115-limiting step, 116-positioning rib, 117-positioning groove, 12-upper cover, 1201-top plate, 1202-outer plate, 121-engaging hole, 122-annular rib, 13-connecting pipe, 14-seal, 141-annular groove, 142-bottom sealing lip, 143-lateral sealing lip;

[0034] 21-valve seat, 210-valve chamber, 211-water inlet, 212-positioning column, 22-paddle, 221-water hole, 222-center column, 223-driven wheel, 23-spray arm support, 231-self-cleaning water supply port, 232-spray arm water supply port, 24-driver, 25-rotating shaft, 251-driving wheel;

[0035] 3-water cup assembly, 31-water collecting chamber, 311-convex rib, 32-water dividing area, 321-water hole, 33-drainage groove; 4-filter assembly, 411-annular flange; 5-washing pump; 6-inner tank assembly. DETAILED DESCRIPTION

[0036] The following examples illustrate the present invention, but the present invention is not limited by these examples. Modifications to the specific implementation of the present invention or equivalent replacement of some technical features without departing from the spirit of the present invention should be included in the scope of the technical solution claimed for protection in the present invention.

[0037] Example 1

[0038] refer to Figure 1-3 The present embodiment provides a self-cleaning system, which includes a water cup assembly 3, a filter assembly 4 and a washing pump 5. The water cup assembly 3 has a water collecting chamber 31 and a water dividing area 32 which are open upwards, and a plurality of water holes 321 for water flow to pass through are provided on the water dividing area 32. A drainage groove 33 and a receiving groove 34 which are located outside the water collecting chamber 31 are recessed on the top of the water cup assembly 3. The drainage groove 33 is connected to the water collecting chamber 31 at one end close to the water collecting chamber 31, and is used to drain the water flow at the top of the water cup assembly 3 into the water collecting chamber 31. The receiving groove 34 is located between the drainage groove 33 and the water dividing area 32, and its end close to the water collecting chamber 31 is connected to the water collecting chamber 31. The receiving groove 34 can also drain the water flow at the top of the water cup assembly 3 into the water collecting chamber 31.

[0039] The filter assembly 4 is disposed in the water collection chamber 31, and the filter assembly 4 and the water cup assembly 3 are buckled together through a buckle structure, so that the filter assembly 4 can be detachably installed in the water collection chamber 31. In this embodiment, the filter assembly 4 includes a cylindrical filter and a microfilter detachably installed in the cylindrical filter, and the cylindrical filter is buckled with the water cup assembly 3.

[0040] refer to Figure 1-3 Furthermore, the self-cleaning system also includes a cleaning ring assembly 1 and / or a water diversion valve assembly (not shown in the figure). The cleaning ring assembly 1 is arranged at the opening of the water collecting chamber 31 and is sleeved on the outside of the filter assembly 4. The cleaning ring assembly 1 has an annular cavity 10, a cleaning water inlet 112, and a plurality of injection holes 113 arranged at intervals in the circumferential direction. The annular cavity 10 is respectively connected with the cleaning water inlet 112 and each injection hole 113, and the cleaning water inlet 112 is connected with external tap water or the water collecting chamber 31. The water outlet direction of each injection hole 113 is configured to be toward the filter assembly 4. In this way, the cleaning ring assembly 1 is used to flush and clean the filter assembly 4 around, so that pollutants are not attached to the microfilter of the filter assembly 4, ensuring that the washing pump can wash normally without empty suction, thereby improving the washing efficiency of the dishwasher. At the same time, there is no need for the user to manually remove the filter assembly 4 for cleaning, thereby improving the user experience.

[0041] The water diversion valve assembly is installed at the water diversion area 32. The water diversion valve assembly has a water inlet 211, a self-cleaning water supply port 231 and a spray arm water supply port 232. One end of the water inlet 211 is connected to the water collection chamber 31 through the washing pump 5, and the other end is selectively connected to the self-cleaning water supply port 231 or the spray arm water supply port 232. The self-cleaning water supply port 231 is used to provide cleaning water for the components to be self-cleaned. In this embodiment, the components to be self-cleaned include a filter assembly 4, and the self-cleaning water supply port 231 is configured to be connected to the cleaning water inlet 112 of the cleaning ring assembly 1, so as to provide cleaning water for the cleaning ring assembly 1 through the water diversion valve assembly, so that the self-cleaning water path of the filter assembly and the tableware washing water path are independent of each other, which does not affect the water pressure of the tableware washing outlet, ensuring that the tableware is washed clean, and can also ensure the water pressure of the self-cleaning cleaning of the filter assembly, so that the filter assembly can be rinsed clean.

[0042] It is particularly noted that the self-cleaning water supply port 231 may not be connected to the cleaning water inlet 112 of the cleaning ring assembly 1. In this case, the water outlet direction of the self-cleaning water supply port 231 is configured to be directly toward the filter assembly 4. In this case, the cleaning ring assembly 1 may be omitted or not omitted. When the cleaning ring assembly 1 is not omitted, the cleaning water inlet 112 of the cleaning ring assembly 1 may be directly connected to the water collection chamber 31 of the tap water or water cup assembly, and a water pump may be used to pump water to the cleaning water inlet 112 of the cleaning ring assembly 1 to provide pressurized water for the cleaning ring assembly 1. Figure 1-6 The cleaning ring assembly 1 includes a cleaning ring body 11 and an upper cover 12. The cleaning ring body 11 has an annular groove 111 that opens upward. The upper cover 12 is detachably connected to the top of the cleaning ring body 11 and covers the upward opening of the annular groove 111. The upper cover 12 and the annular groove 111 are enclosed to form an annular cavity 10. In this embodiment, the upper cover 12 includes a top plate 1201 and an outer plate 1202. The outer periphery of the top plate 1201 is integrally formed with the upper end of the outer plate 1202. When installed, the top plate 1201 covers the upward opening of the annular groove 111 and is enclosed with the annular groove 111 to form an annular cavity 10. The outer plate 1202 is mounted on the outer periphery of the upper end of the cleaning ring body 11. A cleaning water inlet 112 connected to the annular cavity 10 is provided on the upper cover 12 or the cleaning ring body 11. In this embodiment, the cleaning water inlet 112 is integrally formed and arranged on the outer side wall of the cleaning ring body 11. A plurality of injection holes 113 connected to the annular cavity 10 are provided at the bottom and / or the inner wall of the cleaning ring body 11. In the present embodiment, a plurality of injection holes 113 are circumferentially spaced apart on the inner wall of the cleaning ring body 11. The bottom of the cleaning ring body 11 is an inclined surface 110 which is inclined from the outside to the inside and upward. A plurality of injection holes 113 are circumferentially spaced apart on the inclined surface 110. The water outlet direction of each injection hole 113 is toward the central axis of the cleaning ring body 11, thereby ensuring that each injection hole 113 sprays water toward the filter assembly 4 on its radial inner side, thereby flushing and cleaning the microfilter of the filter assembly 7 around.

[0043] In other embodiments, a downwardly opening annular concave cavity can be provided on the upper cover 12, and the upper cover can also include a top plate 1201, an outer plate 1202 and an inner plate, the upper end of the inner plate and the upper end of the outer plate 1202 are respectively integrally formed with the inner and outer peripheries of the top plate 1201, at this time, the inner plate, the outer plate and the top plate 1201 are combined to form an annular concave cavity opening downward, and the annular concave cavity is sleeved outside the upper end of the annular groove 111 and the two are combined to form an annular cavity 10.

[0044] Specifically, the cleaning ring body 11 and the upper cover 12 are detachably connected through a snap-fit ​​structure and / or fasteners. The snap-fit ​​structure includes a snap-fit ​​hole 121 and an undercut 114. A plurality of undercuts 114 extending outward and spaced circumferentially are integrally formed on the upper end of the outer wall of the cleaning ring body 11. The upper cover 12 is provided with a snap-fit ​​hole 121 at the position corresponding to the undercut 114. In this embodiment, the snap-fit ​​hole 121 is respectively arranged on the radial outer side of the top plate 1201 and the upper end of the outer plate 1202. The snap-fit ​​hole 121 is buckled with the corresponding undercut 114 to realize the detachable installation of the upper cover 12 on the cleaning ring body 11. Of course, fasteners (such as screws) can also be used to replace the snap-fit ​​structure, or fasteners can be used for further reinforcement to prevent the cleaning ring body 11 from being separated from the upper cover 12.

[0045] refer to Figure 2-3 In this embodiment, the lower end of the cleaning ring body 11 extends into the water collecting chamber 31, and the upper end is located above the upward opening of the water collecting chamber 31. The upper cover 12 is located at the upward opening of the water collecting chamber 31 and abuts against the top of the water cup assembly 3. An annular flange 411 extending outward is provided on the outer side wall of the upper end of the filter assembly 4. In this embodiment, the annular flange 411 is integrally formed and arranged on the outer side wall of the upper end of the cylindrical filter. The annular flange 411 is located above the cleaning ring assembly 1. The upper cover 12 of the cleaning ring assembly 1 is sandwiched between the annular flange 411 and the top of the water cup assembly 3, so that the cleaning ring assembly 1 is fixed between the annular flange 411 of the filter assembly 4 and the top of the water cup assembly 3. Of course, the annular flange 411 can also be configured to press the upper cover 12 of the cleaning ring assembly 1 against the top of the water cup assembly 3, so as to stably and reliably install the cleaning ring assembly 1 at the set position.

[0046] In addition, a first positioning structure and / or a second positioning structure are provided between the cleaning ring assembly 1 and the water cup assembly 3, so that the cleaning ring assembly 1 is limited and positioned on the water cup assembly 3 through the first positioning structure and / or the second positioning structure, so as to prevent the cleaning ring assembly 1 from rotating relative to the water cup assembly 3. Specifically, the first positioning structure includes a drainage groove 33 and a positioning rib 116. A drainage groove 33 connected to the water collecting cavity 31 is recessed on the top of the water cup assembly 3. A positioning rib 116 protruding outward and arranged vertically is correspondingly provided on the outer side wall of the cleaning ring body 11 of the cleaning ring assembly 1. The positioning rib 116 is inserted into the drainage groove 33. The second positioning structure includes a convex rib 311 and a positioning groove 117. A convex rib 311 extending toward the inside and arranged vertically is integrally formed on the cavity wall of the water collecting cavity 31. A positioning groove 117 recessed toward the inside is correspondingly provided on the outer side wall of the cleaning ring body 11 of the cleaning ring assembly 1. The positioning groove 117 is matched and plugged with the convex rib 311.

[0047] refer to Figure 1-6 The cleaning ring assembly 1 also includes a connecting pipe 13, and the cleaning water inlet 112 is connected to the self-cleaning water supply port 231 through the connecting pipe 13, so as to provide water flow to the cleaning ring assembly 1 through the water diversion valve assembly. In this embodiment, a receiving groove 34 is recessed at the position corresponding to the connecting pipe 13 on the top of the water cup assembly 3, and the free end of the cleaning water inlet 112 is inserted into the receiving groove 34. The end of the connecting pipe 13 close to the cleaning ring assembly 1 is accommodated in the receiving groove 34 and is sleeved outside the cleaning water inlet 112, so that the connecting pipe 13 and the cleaning water inlet 112 of the cleaning ring body 11 are limited and positioned.

[0048] refer to Figure 3-6 The cleaning ring assembly 1 also includes a seal 14, which is detachably installed in the upper cover 12. The cleaning ring body 11 and the upper cover 12 are sealed and connected via the seal 14 to prevent water leakage at the connection between the cleaning ring body 11 and the upper cover 12. Specifically, at least one annular rib 122 extending downward is integrally formed on the bottom surface of the top plate 1201 of the upper cover 12. In this embodiment, there are two annular ribs 122, which are coaxially arranged. An annular groove 141 is recessed at the position of the top of the seal 14 corresponding to the annular rib 122. The annular groove 141 is sleeved outside the annular rib 122 and has an interference fit with the annular rib 122, so that the seal 14 is reliably and detachably connected to the upper cover 12.

[0049] Specifically, limiting steps 115 are formed at the upper ends of the two opposite groove walls of the annular groove 111, and the seal 14 is pressed against the limiting steps 115 by the upper cover 12 and is interference fit with the cleaning ring body 11. More specifically, a bottom sealing lip 142 extending downward is integrally formed at the position of the bottom of the seal 14 corresponding to the lateral surface of the limiting step 115. The bottom sealing lip 142 is annular in structure and tightly abuts against the lateral surface of the limiting step 115 to form a first sealing layer; one or two lateral sealing lips 143 extending outward are integrally formed on the inner and outer side walls of the seal 14. The lateral sealing lips 143 are annular in structure and tightly abut against the vertical surface of the limiting step 115 to form a second sealing layer. The top plate 1202 of the upper cover 12 abuts against the tops of the two opposite groove walls of the annular groove 111 to form a third sealing layer.

[0050] refer to Figure 1-3 and Figure 7-8 The water diversion valve assembly includes a valve seat 21, a paddle 22 and a spray arm support 23. The valve seat 21 is installed at the bottom of the water diversion area 32 of the water cup assembly 3. The valve seat 21 has a valve chamber 210 and a water inlet 211. The valve chamber 210 is connected to the water collection chamber 31 of the water cup assembly 3 through the water inlet 211 and the washing pump 5 in sequence. The paddle 22 is rotatably arranged in the valve seat 21 and is located below the water diversion area 32. The paddle 22 has a water hole 221 for water flow to pass through. The water diversion area 32 has at least two water holes 221 for water flow to pass through. By rotating the paddle 22, the water hole 221 can be selectively connected to one of the water holes 221 to achieve multiple water outlet modes and achieve the effect of distributing water outlet, thereby quickly switching to the corresponding water path. In this embodiment, a center column 222 extending downward is integrally formed at the center position of the paddle 22, and a positioning column 212 extending upward and located in the valve chamber 210 is integrally formed at the position of the valve seat 21 corresponding to the center column. During installation, the center column 222 can be rotatably mounted outside the upper end of the positioning column 212.

[0051] The spray arm support 23 is installed on the top of the water dividing area 32 of the water cup assembly 3. The spray arm support 23 has a self-cleaning water supply port 231 and a spray arm water supply port 232. In the present embodiment, the spray arm water supply port 232 includes two spray arm water outlets arranged at intervals. Correspondingly, the water dividing area 32 has three water holes 221, one of which is configured to be connected to the self-cleaning water supply port 231, and the remaining water holes 221 are configured to be connected to the spray arm water supply port 232.

[0052] When the paddle 22 rotates to the self-cleaning position, the water inlet 211 of the valve seat 21, the water hole 221 of the paddle 22, the water hole 221 connected to the self-cleaning water supply port 231, the self-cleaning water supply port 231 and the cleaning ring assembly 1 are connected in sequence to form a self-cleaning water path for the filter assembly, and at this time, the spray arm water supply port 232 of the spray arm support 23 does not discharge water. When the paddle 22 rotates to the washing position, the water inlet 211 of the valve seat 21, the water hole 221 of the paddle 22, the water hole 221 connected to the spray arm water supply port 232, the spray arm water supply port 232 and the dishwasher spray arm are connected in sequence to form a dishwashing water path, and at this time, the self-cleaning water supply port 231 of the spray arm support 23 does not discharge water. It can be seen that the water outlets of the dishwashing water circuit and the filter component self-cleaning water circuit are independent of each other, which does not affect the water pressure of the spray arm water supply port 232, ensuring that the dishes are washed cleanly, and can also ensure the cleaning water pressure of the filter component self-cleaning, so that the filter component 1 can be rinsed clean.

[0053] The water diversion valve assembly also includes a driver 24 and a rotating shaft 25. The driver 24 is arranged outside the valve seat 21. One end of the rotating shaft 25 is connected to the output end of the driver 24, and the other end extends into the valve chamber 210 of the valve seat 21 and is sealed and connected to the valve seat 21. The central column 222 of the paddle 22 is transmission-connected to one end of the rotating shaft 25 located inside the valve seat 21, so that the paddle 22 is driven by the rotating shaft 25 to rotate and switch the water path under the drive of the driver 24. In this embodiment, the rotating shaft 25 is transmission-connected to the paddle 22 through a turbine or gear structure, and the gear structure includes a driving wheel 251 and a driven wheel 223. The driving wheel 251 is arranged outside the end of the rotating shaft 25 located inside the valve seat 21, and the driven wheel 223 meshing with the driving wheel 251 is arranged at the lower end of the central column.

[0054] Example 2

[0055] refer to Figure 9-10 A dishwasher of this embodiment includes an inner tank assembly 6 and a self-cleaning system as described in Example 1. Through the above self-cleaning system, firstly, the microfilter of the filter assembly 3 can be cleaned, so that pollutants are not attached to the microfilter, ensuring that the washing pump can wash normally without empty suction, thereby improving the washing efficiency of the dishwasher; secondly, by improving the water diversion valve assembly, separate self-cleaning water paths for the filter assembly and tableware washing water paths are provided respectively, so that the water pressure for washing tableware is not affected, ensuring that the tableware is washed cleanly, and the water pressure for self-cleaning of the filter assembly can be ensured, so that the filter assembly can be rinsed clean; thirdly, since the filter assembly can be self-cleaned, the trouble of the user manually cleaning the filter assembly is saved, which greatly improves the user's experience.

[0056] The above are only some embodiments of the present invention. For those skilled in the art, several modifications and improvements can be made without departing from the inventive concept of the present invention, which all belong to the protection scope of the present invention.

Claims

1. A self-cleaning system, characterized in that: include: A cleaning ring assembly (1), comprising a cleaning ring body (11) and an upper cover (12), wherein the cleaning ring body (11) has an annular groove (111) opening upward, the upper cover (12) is detachably connected to the top of the cleaning ring body (11) and covers the upward opening of the annular groove (111), the upper cover (12) and the annular groove (111) are combined to form an annular cavity (10), a cleaning water inlet (112) connected to the annular cavity (10) is provided on the upper cover (12) or the cleaning ring body (11), and a plurality of spray holes (113) connected to the annular cavity (10) are provided on the bottom and / or inner side wall of the cleaning ring body (11), and the water outlet direction of the spray holes (113) is toward the central axis of the cleaning ring body (11); and / or A water diversion valve assembly comprises a valve seat (21), a paddle (22) and a spray arm support (23); the valve seat (21) has a water inlet (211); the spray arm support (23) is arranged on the top of the valve seat (21) and has a self-cleaning water supply port (231) and a spray arm water supply port (232); the paddle (22) is rotatably arranged in the valve seat (21) and has a water through hole (221) for water flow to pass through; the water inlet (211) is selectively connected to the self-cleaning water supply port (231) or the spray arm water supply port (232) through the water through hole (221); the self-cleaning water supply port (231) is used to provide cleaning water for the parts to be self-cleaned.

2. A self-cleaning system according to claim 1, characterized in that: The cleaning ring assembly (1) further comprises a connecting pipe (13), and the cleaning water inlet (112) and the self-cleaning water supply port (231) are connected via the connecting pipe (13).

3. A self-cleaning system according to claim 1, characterized in that: The cleaning ring body (11) and the upper cover (12) are detachably connected via a snap-fit ​​structure and / or a fastener.

4. A self-cleaning system according to claim 3, characterized in that: The buckle structure comprises a buckle hole (121) and an undercut (114); a plurality of undercuts (114) are circumferentially spaced apart on the upper end of the outer wall of the cleaning ring body (11); a buckle hole (121) is provided on the upper cover (12) at a position corresponding to the undercut (114); and the buckle hole (121) is buckled with the corresponding undercut (114).

5. A self-cleaning system according to claim 1, characterized in that: The cleaning ring assembly (1) further comprises a sealing member (14), and the cleaning ring body (11) and the upper cover (12) are sealedly connected via the sealing member (14).

6. A self-cleaning system according to claim 5, characterized in that: Limiting steps (115) are respectively formed at the upper ends of the two opposite groove walls of the annular groove (111); the sealing member (14) is pressed tightly against the limiting steps (115) by the upper cover (12) and is interference-fitted with the cleaning ring body (11).

7. A self-cleaning system according to claim 5, characterized in that: At least one annular rib (122) extending downward is provided on the bottom surface of the top plate of the upper cover (12), and an annular groove (141) is recessed at a position on the top of the sealing member (14) corresponding to the annular rib (122), wherein the annular groove (141) is sleeved outside the annular rib (122) and is interference fit with the annular rib (122).

8. A self-cleaning system according to claim 1, characterized in that: The water diversion valve assembly further comprises a driver (24) and a rotating shaft (25); the driver (24) is arranged outside the valve seat (21); one end of the rotating shaft (25) is connected to the output end of the driver (24); the other end extends into the valve seat (21) and is drivingly connected to the paddle (22).

9. A self-cleaning system according to any one of claims 1 to 8, characterized in that: Also includes: The water cup assembly (3) comprises a water collecting chamber (31) opening upward and a water dividing area (32); A filter assembly (4) is disposed in the water collecting chamber (31) and is buckled with the water cup assembly (3); A cleaning ring assembly (1) sleeved on the outside of the filter assembly (4) is provided at the opening of the water collecting chamber (31); the water outlet direction of the injection hole (113) is toward the filter assembly (4); and / or a water diversion valve assembly is provided at the water diversion area (32); the water inlet (211) is connected to the water collecting chamber (31); and the self-cleaning water supply port (231) is used to provide cleaning water for the components to be self-cleaned, wherein the components to be self-cleaned include the filter assembly (4).

10. A self-cleaning system according to claim 9, characterized in that: An annular flange (411) extending outward and located above the cleaning ring assembly (1) is fixedly provided on the outer side wall of the upper end of the filter assembly (4); the upper cover (12) of the cleaning ring assembly (1) is clamped between the annular flange (411) and the top of the water cup assembly (3).

11. A self-cleaning system according to claim 9, characterized in that: A first positioning structure and / or a second positioning structure is provided between the cleaning ring assembly (1) and the water cup assembly (3).

12. A dishwasher, characterized in that: It comprises an inner tank assembly (6) and a self-cleaning system as claimed in any one of claims 1 to 11.

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