Three-way control valve and dish washing machine thereof

Abstract

The utility model discloses a three-way control valve and a dish-washing machine thereof, the three-way control valve comprises a valve body, the valve body is provided with a valve cavity, a water inlet, a first water outlet, a second water outlet and a mounting hole, and the valve cavity is respectively communicated with the water inlet, the first water outlet, the second water outlet and the mounting hole; the swing arm assembly is rotatably arranged in the valve cavity, the fixed end of the swing arm assembly penetrates through the mounting hole to extend out of the valve body, and the swing arm assembly can be switched between opening the first water outlet and closing the second water outlet and closing the first water outlet and opening the second water outlet; the driving assembly is arranged outside the valve body, and the output end of the driving assembly is connected with the fixed end of the swing arm assembly. The three-way control valve is simple in structure and capable of achieving switching of different water ways so as to meet the self-cleaning water requirement of a dish washing machine filtering assembly or an extractor hood.

Description

TECHNICAL FIELD

[0001] The utility model relates to kitchen electrical technology field especially relates to a tee control valve and its dish washer. BACKGROUND

[0002] The dish washer is generally provided with a filter residue collecting basket for collecting food residue, and the user takes out the filter residue collecting basket to pour out the food residue after the dish washer is finished with spraying and cleaning, which is not only troublesome, but also needs to disassemble and clean the residue collecting basket every certain period of time, and if the food residue is not taken out and cleaned in time, it will cause the cleaning cavity to smell and affect the hygiene of tableware.

[0003] The cleaning water path and the drainage water path of the existing dish washer are independent of each other, and the cleaning water path only supplies water to the spray arm assembly of the dish washer, and the drainage water path is only used for draining water in the water cup assembly of the dish washer, which is single in function and takes into account the self-cleaning of the filter residue collecting basket or the extractor hood.

[0004] In addition, the cleaning of the existing extractor hood has always been a headache for users, and if the extractor hood is not cleaned for a long time, it may produce an odor, causing air pollution in the kitchen, breeding bacteria, and thus seriously damaging the health of the user. Therefore, in order to ensure the working effect of the extractor hood, the user needs to clean the oil stains on the oil cup, volute and impeller regularly, and cleaning the volute and impeller usually needs to ask professional cleaning personnel, which is time-consuming and laborious and high in cost. SUMMARY

[0005] The utility model aims at at least in a certain extent solves one of the problems existing in prior art related, for this, the utility model provides a tee control valve, its simple structure can realize different water path switching, to satisfy dish washer filter assembly or extractor hood's self cleaning water demand. The utility model also provides a dish washer.

[0006] According to the above-mentioned tee control valve, the following technical scheme is adopted:

[0007] A tee control valve, comprising: a valve body having a valve cavity, a water inlet, a first water outlet, a second water outlet and a mounting hole, the valve cavity is communicated with the water inlet, the first water outlet, the second water outlet and the mounting hole respectively; a swing arm assembly rotatably arranged in the valve cavity and fixed end extending out of the valve body through the mounting hole, the swing arm assembly can be switched between opening the first water outlet and closing the second water outlet and closing the first water outlet and opening the second water outlet; and a drive assembly arranged outside the valve body and its output end connected with the fixed end of the swing arm assembly.

[0008] Further, the swing arm assembly comprises a rotating swing arm, the rotating swing arm comprises a swing arm and a connecting arm, the swing arm is rotatably arranged in the valve cavity, the swing arm can be switched between opening the first water outlet and closing the second water outlet and closing the first water outlet and opening the second water outlet, the connecting arm is vertically arranged in the mounting hole, and the opposite ends of the connecting arm are connected with the swing arm and the output end of the driving assembly respectively.

[0009] Further, the swing arm and the connecting arm are integrally formed and are arranged at an angle, and / or the connecting arm is sealingly connected with the hole wall of the mounting hole.

[0010] Further, the swing arm assembly further comprises a sealing sleeve, the sealing sleeve is arranged in the valve cavity and sleeved on the swing arm.

[0011] Further, a first sealing part and a second sealing part are arranged at opposite ends of the sealing sleeve respectively, the first sealing part is arranged close to the first water outlet and is used for opening or closing the first water outlet, the second sealing part is arranged close to the second water outlet and is used for opening or closing the second water outlet; and / or a positioning structure is arranged between the sealing sleeve and the swing arm.

[0012] Further, the driving assembly comprises a driver and a connecting block, the driver is mounted on the valve body, one end of the connecting block is drivingly connected with the output end of the driver, the other end of the connecting block is sleeved on the fixed end of the swing arm assembly and is connected with the swing arm assembly.

[0013] Further, the connecting block is provided with a connecting sleeve, the connecting sleeve is sleeved on the fixed end of the swing arm assembly.

[0014] Further, a plurality of clamping claws are circumferentially arranged at the free end of the connecting sleeve, and the plurality of clamping claws collectively clamp the fixed end of the swing arm assembly.

[0015] Further, an annular clamping groove is arranged at the output end of the driver, the connecting block is provided with at least two first clamping hooks extending towards the driver, and the at least two first clamping hooks are respectively matched with the annular clamping groove.

[0016] Further, the driving assembly further comprises a moving block, and the output end of the driver is connected with the connecting block through the moving block.

[0017] Further, an annular clamping groove is arranged at the output end of the driver, the moving block is provided with at least two second clamping hooks extending towards the driver, and the at least two second clamping hooks are respectively matched with the annular clamping groove for clamping; and / or the connecting block is provided with a mounting groove opening towards the moving block, the moving block is provided with a connecting part extending towards the connecting block, and the connecting part is matched with the mounting groove for connection.

[0018] According to the above-mentioned dish washing machine, the following technical scheme is adopted:

[0019] In some embodiments, a dish washing machine comprises a water cup assembly having a water collecting cavity and a drain outlet communicating with the water collecting cavity; a filter assembly detachably installed in the water collecting cavity; and a three-way control valve as described above, the water inlet is communicated with the drain outlet through a drain pump, the first water outlet is communicated with a sewer through a drain pipe, and the second water outlet is communicated with the inside of the water collecting cavity or the filter assembly through a residue collecting cleaning water pipe, or the second water outlet is communicated with the inside of a range hood module through a range hood cleaning water pipe.

[0020] In another embodiment, a dish washing machine comprises a water cup assembly having a water collecting cavity and a washing outlet communicating with the water collecting cavity; a filter assembly detachably installed in the water collecting cavity; a spray arm assembly; and a three-way control valve as described above, the water inlet is communicated with the washing outlet through a washing pump, the first water outlet is communicated with the spray arm assembly, and the second water outlet is communicated with the inside of a range hood module through a range hood cleaning water pipe, or the second water outlet is communicated with the inside of the water collecting cavity or the filter assembly through a residue collecting cleaning water pipe.

[0021] Further, a self-cleaning spray arm is rotatably arranged in the filter assembly, a self-cleaning water inlet is arranged at the bottom of the water cup assembly, a hollow connecting column is correspondingly arranged at the bottom of the filter assembly, the upper and lower ends of the hollow connecting column are connected with the self-cleaning spray arm and the self-cleaning water inlet respectively, and the residue collecting cleaning water pipe is communicated with the self-cleaning spray arm through the self-cleaning water inlet and the hollow connecting column in sequence.

[0022] Compared with the prior art, the three-way control valve has at least the following beneficial effects:

[0023] The three-way control valve of the utility model, through drive assembly drives swing arm assembly to rotate in valve body, simple and ingenious structure, realizes can different waterway switching, satisfies dish washing machine filter assembly or range hood's self-cleaning water demand. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 It is the structure schematic diagram of three-way control valve in the utility model embodiment 1.

[0025] Figure 2 is the cross-sectional view of the three-way control valve in the embodiment 1 of the utility model;

[0026] Figure 3 is the bottom view of the three-way control valve in the embodiment 2 of the utility model;

[0027] Figure 4 is the schematic diagram of the dishwasher in the embodiment 3 of the utility model;

[0028] Figure 5 is the bottom view of the dishwasher in the embodiment 3 of the utility model;

[0029] Figure 6 is the explosion view of the slag collection and filtration system in the dishwasher in the embodiment 3 of the utility model;

[0030] Figure 7 is the cross-sectional view of the dishwasher in the embodiment 3 of the utility model;

[0031] Figure 8 is the schematic diagram of the dishwasher in the embodiment 4 of the utility model;

[0032] Figure 9 is the schematic diagram of the dishwasher in the embodiment 5 of the utility model;

[0033] Figure 10 is the schematic diagram of the dishwasher in the embodiment 6 of the utility model.

[0034] In the drawing: 1-three-way control valve, 11-valve body, 111-valve cavity, 112-water inlet, 113-first water outlet, 114-second water outlet, 115-mounting hole, 12-rotary swing arm, 121-swinging arm, 1211-bump, 122-connection arm, 13-sealing sleeve, 131-first sealing part, 132-second sealing part, 133-groove, 14-driver, 141-annular clamping groove, 15-connection block, 151-mounting sleeve, 152-claw, 153-first clamping hook, 16-moving block, 161-second clamping hook;

[0035] 2-cup assembly, 21-water collection cavity, 221-drainage port, 222-washing water outlet, 223-self-cleaning water inlet; 3-filtration assembly, 31-hollow connection column; 40-drainage pump, 41-drainage pipe, 42-slag collection and cleaning water pipe, 43-washing pump, 44-exhaust hood cleaning water pipe, 45-drainage pipe; 5-self-cleaning spray arm; 6-spray arm assembly; 7-exhaust hood module, 71-oil collection cavity. DETAILED DESCRIPTION

[0036] The following embodiments are used to illustrate the present application, but the present application is not limited to these embodiments. Modifications to the specific embodiments of the present application or equivalent substitutions of some technical features are made without departing from the spirit of the present application, which should be covered in the technical solution range claimed by the present application.

[0037] Embodiment 1

[0038] Reference Figures 1-2 The embodiment provides a three-way control valve, the three-way control valve 1 includes a valve body 11, a swing arm assembly (not shown in the figure) and a swing arm assembly (not shown in the figure), wherein the valve body 11 has a valve cavity 111, a water inlet 112, a first water outlet 113, a second water outlet 114 and a mounting hole 115, the valve cavity 111 is communicated with the water inlet 112, the first water outlet 113, the second water outlet 114 and the mounting hole 115 respectively. The swing arm assembly is rotatably arranged in the valve cavity 111 and the fixed end extends out of the valve body 11 through the mounting hole 115, and the swing arm assembly can be switched between opening the first water outlet 113 and closing the second water outlet 114 (i.e. the first position) and closing the first water outlet 113 and opening the second water outlet 114 (i.e. the second position). The driving assembly is arranged outside the valve body 11 and the output end thereof is connected with the fixed end of the swing arm assembly, for driving the swing arm assembly to swing between the first water outlet 113 and the second water outlet 114, so as to realize switching different water paths.

[0039] When the driving assembly drives the swing arm assembly to rotate to the first position, the water inlet 112 is communicated with the first water outlet 113 through the valve cavity 111, to form a first water path, which can be configured to discharge water in the dishwasher cup assembly to the sewer, or can be configured to supply water in the dishwasher cup assembly to the dishwasher spray arm assembly. When the driving assembly drives the swing arm assembly to rotate to the second position, the water inlet 112 is communicated with the second water outlet 114 through the valve cavity 111, to form a second water path, which can be configured to supply water in the dishwasher cup assembly to the dishwasher filter assembly to meet the water requirement of the self-cleaning of the dishwasher filter assembly, or can be configured to supply water in the dishwasher cup assembly to the range hood module to meet the water requirement of the self-cleaning of the range hood module. In addition, the driving assembly can also drive the swing arm assembly to rotate between the first position and the second position, at this time, the first water path and the second water path are both conducted.

[0040] Reference Figure 2, the horizontal cross-sectional area of the valve cavity 111 is triangular or trapezoidal, the mounting hole 115 is arranged at the small end of the valve cavity 111, the water inlet 112 is arranged close to the large end of the valve cavity 111, the first water outlet 113 and the second water outlet 114 are arranged on the opposite two side walls of the valve body 11 and are located between the water inlet 112 and the mounting hole 115, so that the overall volume of the valve body 11 is reduced, and the swing amplitude of the swing arm assembly between the first position and the second position is reduced.

[0041] With reference to Figures 1-2 , the swing arm assembly includes a rotating swing arm 12, the rotating swing arm 12 includes a swing arm 121 and a connecting arm 122, the swing arm 121 is rotatably arranged in the valve cavity 111, the swing arm 121 can be switched between opening the first water outlet 113 and closing the second water outlet 114 and closing the first water outlet 113 and opening the second water outlet 114, the connecting arm 122 is vertically arranged in the mounting hole 115, and the opposite two ends of the connecting arm 122 are respectively connected with the swing arm 121 and the output end of the driving assembly, so that the driving assembly can drive the swing arm 121 through the connecting arm 122. In this embodiment, the swing arm 121 and the connecting arm 122 respectively constitute the free end and the fixed end of the swing arm assembly, the swing arm 121 and the connecting arm 122 are integrally formed and are arranged at an angle to meet the direction switching; the connecting arm 122 is sealingly connected with the hole wall of the mounting hole 115 to prevent water leakage at the mounting hole 115.

[0042] With reference to Figure 2 , the swing arm assembly further includes a sealing sleeve 13, the sealing sleeve 13 is arranged in the valve cavity 111 and sleeved on the swing arm 121, the sealing sleeve 13 and the swing arm 121 together constitute the free end of the swing arm assembly, the sealing sleeve 13 is used for closing the first water outlet 113 or the second water outlet 114 to improve the sealing performance of the closed water outlet, so that the swing arm 121 is in flexible contact with the cavity wall of the valve cavity 111.

[0043] In this embodiment, the opposite two ends of the sealing sleeve 13 are respectively provided with outwardly extending first and second sealing portions 131 and 132, the first sealing portion 131 is arranged close to the first water outlet 113 and is used for opening or closing the first water outlet 113, the second sealing portion 132 is arranged close to the second water outlet 114 and is used for opening or closing the second water outlet 114. In addition, a positioning structure is arranged between the sealing sleeve 13 and the swing arm 121, the positioning structure includes a protrusion 1211 and a groove 133, the sealing sleeve 13 is recessed with the groove 133 which is open towards the swing arm 121, the swing arm 121 is protruded with the protrusion 1211 which extends outwardly at the position corresponding to the groove 133, the protrusion 1211 is matched and clamped with the groove 133, so that by arranging the positioning structure, the sealing sleeve 13 is limited and fixed on the swing arm 121, preventing the sealing sleeve 13 from being displaced relative to the swing arm 121 to affect the effect of closing the water outlet.

[0044] Reference Figure 1 The driving assembly is horizontally installed at the bottom of the valve body 11 to reduce the height of the three-way control valve 1 in the vertical direction. The driving assembly includes a driver 14 and a connecting block 15. In this embodiment, the driver 14 is horizontally installed at the bottom of the valve body 11, one end of the connecting block 15 is in transmission connection with the output end of the driver 14, and the other end of the connecting block 15 is sleeved outside the fixed end of the swing arm assembly and connected with the swing arm assembly, that is, the end of the connecting block 15 away from the driver 14 is sleeved outside the end of the connecting arm 122 located outside the valve body 11 and connected and fixed with the connecting arm 122. Under the driving action of the driver 14, the connecting block 15 can drive the swing arm assembly to rotate back and forth by a certain angle, so as to realize the switching of different water paths.

[0045] The end of the connecting block 15 away from the driver 14 is provided with a connecting sleeve 151, which is sleeved outside the fixed end of the swing arm assembly and abuts or connects with the outer surface of the valve body 11. At this time, the connecting sleeve 151 is connected with the fixed end of the swing arm assembly in cooperation, and the connecting sleeve 151 cannot rotate relative to the fixed end of the swing arm assembly. In addition, a plurality of clamping claws 152 are circumferentially arranged at the free end of the connecting sleeve 151, and the plurality of clamping claws 152 collectively clamp the fixed end of the swing arm assembly, so that the connecting block 15 and the fixed end of the swing arm assembly are reliably connected as a whole, preventing the connecting block 15 from being separated from the swing arm assembly.

[0046] The output end of the driver 14 is provided with an annular clamping groove 141, and the connecting block 15 is provided with at least two first clamping hooks 153 extending towards the driver 14, and the at least two first clamping hooks 153 are respectively matched with the annular clamping groove 141 for clamping, so that the driver 14 and the connecting block 15 are reliably connected as a whole.

[0047] Embodiment 2

[0048] Reference Figure 3 The difference between this embodiment and embodiment 1 is that the connection mode of the driver 14 and the connecting block 15 is different. Specifically, the driving assembly further includes a moving block 16, and the output end of the driver 14 is matched with the connecting block 15 through the moving block 16. Under the driving action of the driver 14, the moving block 16 freely slides and drives the swing arm assembly to rotate back and forth by a certain angle through the connecting block 15, so as to realize the switching of different water paths.

[0049] In the embodiment, the output end of the driver 14 is provided with a ring-shaped clamping groove 141, and the moving block 16 is provided with at least two second clamping hooks 161 extending towards the driver 14, which are respectively matched with the ring-shaped clamping groove 141 to detachably connect the driver 14 and the moving block 16 as a whole. In addition, the connecting block 15 is provided with a mounting groove (not shown in the figure) opening towards the moving block 16, and the moving block 16 is provided with a connecting portion (not shown in the figure) extending towards the connecting block 15, which is matched with the mounting groove.

[0050] Embodiment 3

[0051] Reference Figures 4-7 The embodiment provides a dishwasher, which comprises a water cup assembly 2, a filter assembly 3 and a spray arm assembly 6. The water cup assembly 2 has a water collecting cavity 21, a drain port 221 and a washing water outlet 222, and the water collecting cavity 21 is respectively communicated with the drain port 221 and the washing water outlet 222. The filter assembly 3 is detachably installed in the water collecting cavity 21, and the spray arm assembly 6 is communicated with the washing water outlet 222 through a washing pump 43.

[0052] The dishwasher further comprises a three-way control valve as described in Embodiment 1 or 2, and the three-way control valve 1 is arranged on a drain water path of the dishwasher. Specifically, the water inlet 112 of the three-way control valve 1 is communicated with the drain port 221 through the drain pump 40, the first water outlet 113 of the three-way control valve 1 is communicated with a sewer through the drain pipe 41, and the second water outlet 114 of the three-way control valve 1 is communicated with the water collecting cavity 21 or the inside of the filter assembly 3 through the residue cleaning water pipe 42. Thus, by switching different water paths through the three-way control valve 1, the water in the water cup assembly 2 can be provided to the water collecting cavity 21 or the filter assembly 3 to realize self-cleaning of the water collecting cavity 21 or the filter assembly 3, thereby realizing the self-cleaning function of the dishwasher, or the water in the water cup assembly 2 can be discharged in time to realize the drain function of the dishwasher.

[0053] Further, the dishwasher further comprises a self-cleaning spray arm 5 rotatably arranged in the filter assembly 3, a self-cleaning water inlet 223 arranged at the bottom of the water cup assembly 2 corresponding to the position of the filter assembly 3, and a hollow connecting column 31 arranged at the bottom of the filter assembly 3 corresponding to the self-cleaning water inlet 223, wherein the upper and lower ends of the hollow connecting column 31 are connected with the self-cleaning spray arm 5 and the self-cleaning water inlet 223 respectively, and the residue cleaning water pipe 42 is communicated with the self-cleaning spray arm 5 through the self-cleaning water inlet 223 and the hollow connecting column 31 in sequence to realize water supply to the self-cleaning spray arm 5 from the bottom of the water cup assembly 2. In the embodiment, the three-way control valve, thus without separately dismounting the filter assembly 3, can also realize self-cleaning of the filter assembly 3.

[0054] Embodiment 4

[0055] Reference Figure 8The difference between the embodiment and the embodiment 3 is that the connection object of the second water outlet of the three-way control valve 1 is different.

[0056] Embodiment 5

[0057] Reference Figure 9 The difference between the embodiment and the embodiment 3 is that the installation position of the three-way control valve 1 is different.

[0058] Therefore, by switching different water routes through the three-way control valve 1, the water in the water cup assembly 2 can be provided to the water collecting cavity 21 or the filter assembly 3 to realize self-cleaning of the water collecting cavity 21 or the filter assembly 3, thereby realizing the self-cleaning function of the dishwasher, or the water in the water cup assembly 2 can be provided to the spray arm assembly 6 to realize the dish washing function of the dishwasher.

[0059] Embodiment 6

[0060] Reference Figure 10 The difference between the embodiment and the embodiment 5 is that the connection object of the second water outlet of the three-way control valve 1 is different.

[0061] The above only describes some embodiments of the present application. For those skilled in the art, without departing from the inventive concept of the present application, a number of modifications and improvements can be made, which are all within the protection scope of the present application.

Claims

1. A three-way control valve characterized by comprising: The utility model relates to a valve body (11) with a valve cavity (111), a water inlet (112), a first water outlet (113), a second water outlet (114) and a mounting hole (115), the valve cavity (111) is communicated with the water inlet (112), the first water outlet (113), the second water outlet (114) and the mounting hole (115) respectively, a swing arm assembly is rotatably arranged in the valve cavity (111) and the fixed end of the swing arm assembly is arranged outside the valve body (11) through the mounting hole (115), the swing arm assembly can be switched between opening the first water outlet (113) and closing the second water outlet (114) and closing the first water outlet (113) and opening the second water outlet (114), and a driving assembly is arranged outside the valve body (11) and the output end of the driving assembly is connected with the fixed end of the swing arm assembly. The swing arm assembly comprises a rotating swing arm (12), the rotating swing arm (12) comprises a swing arm (121) and a connecting arm (122), the swing arm (121) is rotatably arranged in the valve cavity (111), the swing arm (121) can be switched between opening the first water outlet (113) and closing the second water outlet (114) and closing the first water outlet (113) and opening the second water outlet (114), the connecting arm (122) is vertically arranged in the mounting hole (115), and the opposite ends of the connecting arm (122) are connected with the swing arm (121) and the output end of the driving assembly respectively. The swing arm (121) and the connecting arm (122) are integrally formed and arranged at an angle, and / or the connecting arm (122) is sealingly connected with the hole wall of the mounting hole (115). The swing arm assembly further comprises a sealing sleeve (13), the sealing sleeve (13) is arranged in the valve cavity (111) and sleeved on the swing arm (121). First and second sealing portions (131) and (132) are arranged at the opposite ends of the sealing sleeve (13) respectively, the first sealing portion (131) is arranged close to the first water outlet (113) and used for opening or closing the first water outlet (113), the second sealing portion (132) is arranged close to the second water outlet (114) and used for opening or closing the second water outlet (114), and / or a positioning structure is arranged between the sealing sleeve (13) and the swing arm (121).

2. A three-way control valve according to claim 1, characterized in that The driving assembly comprises a driver (14) and a connecting block (15), the driver (14) is mounted on the valve body (11), one end of the connecting block (15) is drivingly connected with the output end of the driver (14), the other end of the connecting block (15) is sleeved on the fixed end of the swing arm assembly and connected with the swing arm assembly.

3. A three-way control valve according to claim 2, characterized in that The connecting block (15) is provided with a connecting sleeve (151), the connecting sleeve (151) is sleeved on the fixed end of the swing arm assembly.

4. A three-way control valve according to claim 2, characterized in that A plurality of claws (152) are circumferentially arranged at the free end of the connecting sleeve (151), and the plurality of claws (152) jointly clamp the fixed end of the swing arm assembly.

5. A three-way control valve according to claim 4, characterized in that ​ 6. A three-way control valve according to claim 1, characterized in that ​ 7. A three-way control valve according to claim 6, characterized in that ​ 8. A three-way control valve according to claim 7, characterized in that ​ 9. A three-way control valve according to claim 6, characterized in that An annular clamping groove (141) is arranged at the output end of the driver (14), and the connecting block (15) is provided with at least two first clamping hooks (153) extending towards the driver (14), and the at least two first clamping hooks (153) are respectively matched with the annular clamping groove (141) for clamping.

10. A three-way control valve according to any one of claims 6-8, characterized in that The driving assembly further comprises a moving block (16), and the output end of the driver (14) is connected with the connecting block (15) through the moving block (16).

11. A three-way control valve according to claim 10, characterized in that An annular clamping groove (141) is arranged at the output end of the driver (14), and the moving block (16) is provided with at least two second clamping hooks (161) extending towards the driver (14), and the at least two second clamping hooks (161) are respectively matched with the annular clamping groove (141) for clamping; and / or the connecting block (15) is provided with a mounting groove opening towards the moving block (16), and the moving block (16) is provided with a connecting portion extending towards the connecting block (15), and the connecting portion is connected with the mounting groove.

12. A dishwasher, characterized in that Comprising: a water cup assembly (2) having a water collecting cavity (21) and a water outlet (221) communicating with the water collecting cavity (21); a filter assembly (3) detachably installed in the water collecting cavity (21); and a three-way control valve according to any one of claims 1-11, wherein the water inlet (112) is communicated with the water outlet (221) through a drain pump (40), the first water outlet (113) is communicated with a sewer through a drain pipe (41), and the second water outlet (114) is communicated with the inside of the water collecting cavity (21) or the filter assembly (3) through a slag collecting cleaning water pipe (42), or the second water outlet (114) is communicated with the inside of a range hood module (7) through a range hood cleaning water pipe (44). Comprising:

13. A dishwasher, characterized in that a water cup assembly (2) having a water collecting cavity (21) and a washing water outlet (222) communicating with the water collecting cavity (21); a filter assembly (3) detachably installed in the water collecting cavity (21); a spray arm assembly (6); and a three-way control valve according to any one of claims 1-11, wherein the water inlet (112) is communicated with the washing water outlet (222) through a washing pump (43), the first water outlet (113) is communicated with the spray arm assembly (6), and the second water outlet (114) is communicated with the inside of a range hood module (7) through a range hood cleaning water pipe (44), or the second water outlet (114) is communicated with the inside of the water collecting cavity (21) or the filter assembly (3) through a slag collecting cleaning water pipe (42). ​ ​ 14. A dishwasher according to claim 12 or 13, characterised in that, It also includes a self-cleaning spray arm (5) rotatably arranged in the filter assembly (3), a self-cleaning water inlet (223) is arranged at the bottom of the water cup assembly (2), a hollow connecting column (31) is correspondingly arranged at the bottom of the filter assembly (3), the upper and lower ends of the hollow connecting column (31) are connected with the self-cleaning spray arm (5) and the self-cleaning water inlet (223) respectively, and the slag-collecting and cleaning water pipe (42) is connected with the self-cleaning spray arm (5) in communication through the self-cleaning water inlet (223) and the hollow connecting column (31) in sequence.

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