Household appliance

Abstract

The invention relates to a household appliance. The household appliance comprises a box body; a circulating pump; cleaning the pipeline; a waste water pipeline; the switch control device comprises a body and a cam, a mounting cavity is formed in the body, and a first mounting position and a second mounting position are formed on the two opposite sides of the mounting cavity; the cam is rotatably arranged between the first mounting position and the second mounting position; the cleaning pipeline is arranged in the first mounting position in a penetrating manner, and the wastewater pipeline is arranged in the second mounting position in a penetrating manner; when the cam rotates towards the direction of the second mounting position, the wastewater pipeline can be pressed between the cam and the side wall of the second mounting position so as to close the wastewater pipeline; and when the cam rotates towards the direction of the first mounting position, the cleaning pipeline can be pressed between the cam and the side wall of the first mounting position so as to close the cleaning pipeline. Therefore, the body of the switch control device is matched with the cam, so that the on-off of the cleaning pipeline and the waste water pipeline can be more conveniently controlled, and the problem that the valve body is easy to leak is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of electrical equipment, and in particular to a household appliance. Background Art

[0002] With the development of science and technology, home appliances such as ovens and dishwashers are becoming more and more popular. As living standards improve, people's performance requirements for home appliances such as ovens and dishwashers are also getting higher and higher.

[0003] In related household appliances such as ovens and dishwashers, a cavity is usually arranged inside the household appliances. During frequent use, the cavity will gradually become dirty and difficult to clean, affecting the hygiene and safety of the product. Therefore, it is necessary to clean the inside of the cavity after use or regularly.

[0004] At present, in some relevant household appliances, the cavity cleaning method includes water cleaning. Water cleaning requires that the liquid discharged from the cavity be pumped into the cavity or a waste water box through a pump, so two pipelines need to be arranged at the water outlet end of the pump; generally, the two pipelines are controlled by using two solenoid valves or an electric three-way valve for switching control, but it has high requirements on the sealing pressure of the valve body, and an inappropriately matched valve body may have leakage problems. Summary of the invention

[0005] The object of the present invention is to provide a household appliance to optimize the internal structure of the household appliance in the related art and solve the problem that the valve body is prone to leakage.

[0006] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0007] According to one aspect of the present invention, there is provided a household appliance, which comprises: a housing, which forms an outer shell of the household appliance; an inner cavity is arranged in the housing; a drain outlet is arranged at the bottom of the inner cavity; a circulating pump, wherein the water inlet end of the circulating pump is connected to the drain outlet; a cleaning pipeline, one end of which is connected to the water outlet end of the circulating pump, and the other end of which is connected to the inner cavity; a waste water pipeline, one end of which is connected to the water outlet end of the circulating pump, and the other end of which is used to discharge waste water in the inner cavity; a switch control device, comprising a main body and a cam, wherein an installation cavity is arranged in the main body, and a first installation position and a second installation position are formed on opposite sides of the installation cavity; the cam is rotatably arranged in the installation cavity and is arranged between the first installation position and the second installation position; wherein at least part of the cleaning pipeline is passed through the first installation position, and at least part of the waste water pipeline is passed through the first installation position. The pipeline is arranged in the second installation position, and the cleaning pipeline and the wastewater pipeline are arranged on opposite sides of the cam; when the cam rotates toward the second installation position, the wastewater pipeline can be pressed between the cam and the side wall of the second installation position to close the wastewater pipeline; at this time, the cleaning pipeline is opened, and the circulation pump can extract the liquid in the inner cavity through the drain port, and spray it into the inner cavity through the cleaning pipeline to circulate and clean the inner wall of the inner cavity; when the cam rotates toward the first installation position, the cleaning pipeline can be pressed between the cam and the side wall of the first installation position to close the cleaning pipeline; at this time, the wastewater pipeline is opened, and the circulation pump can extract the liquid in the inner cavity through the drain port, and discharge the extracted liquid out of the inner cavity through the wastewater pipeline.

[0008] According to another aspect of the present invention, the present invention further provides a household appliance, which comprises: a housing, which forms an outer shell of the household appliance; an inner cavity is provided in the housing; a first installation position and a second installation position, which are arranged in the housing at intervals and opposite to each other; a first pipeline, which is provided in the housing, and at least a part of the first pipeline is passed through the first installation position; a second pipeline, which is provided in the housing, and at least a part of the second pipeline is passed through the second installation position; a cam, which is rotatably provided between the first installation position and the second installation position, and the first pipeline and the second pipeline are respectively provided on opposite sides of the cam; wherein, when the cam rotates toward the direction of the second installation position, the second pipeline can be pressed between the cam and the side wall of the second installation position to close the second pipeline and open the first pipeline; when the cam rotates toward the direction of the first installation position, the first pipeline can be pressed between the cam and the side wall of the first installation position to close the first pipeline and open the second pipeline.

[0009] The embodiments of the present invention have the following advantages and positive effects:

[0010] In the household appliance of the embodiment of the present invention, a drain port is provided at the bottom of the inner cavity, and a circulating pump is used in cooperation with a clean water pipeline to extract liquid in the inner cavity through the drain port, and spray it into the inner cavity through the cleaning pipeline, so as to realize cyclic cleaning of the inner wall of the inner cavity; a circulating pump is used in cooperation with a waste water pipeline to extract liquid in the inner cavity through the drain port, and discharge the liquid from the inner cavity through the waste water pipeline; at the same time, a switch control device is arranged between the clean pipeline and the waste water pipeline, and the switch control device includes a body and a cam, and an installation cavity is arranged in the body, and the clean pipeline and the waste water pipeline are respectively arranged in the first installation position and the first installation position of the installation cavity. The cam is rotatably arranged between the first and second mounting positions, and the cam is rotated so that the wastewater pipeline can be pressed between the cam and the side wall of the second mounting position, thereby closing the wastewater pipeline and opening the cleaning pipeline, so that the circulation pump can extract the liquid in the inner cavity through the drain port and spray it into the inner cavity through the cleaning pipeline to circulate and clean the inner wall of the inner cavity; and the cleaning pipeline can be pressed between the cam and the side wall of the first mounting position, thereby closing the cleaning pipeline and opening the wastewater pipeline, so that the liquid extracted by the circulation pump can be discharged from the inner cavity through the wastewater pipeline. Therefore, through the cooperation between the body and the cam of the switch control device, it is more convenient to control the on and off of the cleaning pipeline and the wastewater pipeline, while reducing costs and solving the problem of easy leakage of the valve body. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a structural schematic diagram of a household appliance according to an embodiment of the present invention.

[0012] Figure 2 yes Figure 1 Schematic diagram of part of the structure inside the box.

[0013] Figure 3 yes Figure 2 Schematic diagram of the structure from another perspective.

[0014] Figure 4 yes Figure 3 Schematic diagram of part of the cleaning system.

[0015] Figure 5 yes Figure 3 Schematic diagram of part of the structure from another perspective.

[0016] Figure 6 yes Figure 5 Schematic diagram of the enlarged structure of area A in the middle.

[0017] Figure 7 yes Figure 4 Schematic diagram of the structure of the switch control device.

[0018] Figure 8 yes Figure 7 Schematic diagram of the structure from another perspective.

[0019] Fig. 9 yes Figure 8 Schematic diagram of the decomposition.

[0020] Fig.10 yes Fig. 9 Schematic diagram of some structures in .

[0021] Fig.11 yes Fig.10 Top view of the .

[0022] Fig.12 yes Fig.11 Schematic diagram of some structures in .

[0023] Fig.13 yes Fig.11 Schematic diagram of the structure in a usage state.

[0024] Fig.14 yes Fig.11 Schematic diagram of the structure in another usage state.

[0025] Fig.15 yes Fig. 9 Schematic diagram of the structure of the cam.

[0026] Fig.16 yes Fig. 9 Schematic diagram of the structure of the middle cover body and the drive unit.

[0027] The reference numerals are as follows: 1. Box body; 10. Inner cavity; 101. Assembly groove; 11. Inner tank; 111. Water collecting tank; 112. Drain outlet; 12. Door frame; 131. Cooling fan; 132. Air guide cover; 14. Support top plate; 15. Support back plate; 2. Box door; 31. Clean water box; 32. Water inlet pipe; 33. Water pump; 41. Spray nozzle; 411. Nozzle; 412. Limiting rib; 42. Circulation pump; 43. Waste water box; 44. Cleaning pipe; 45. Water collecting box; 46. Waste water pipe; 5. Switch control device; 50. Installation cavity; 501. First installation Mounting position; 502, second mounting position; 503, limiting portion; 504, fixing groove; 505, latching protrusion; 51, main body; 511, first mounting opening; 512, second mounting opening; 513, third mounting opening; 514, fourth mounting opening; 515, first side wall; 5151, first extrusion slope; 516, second side wall; 5161, second extrusion slope; 52, cover body; 521, through hole; 522, fixing column; 523, latching hook; 53, cam; 531, shaft hole; 532, extrusion portion; 533, limiting groove; 54, drive unit; 541, output shaft. DETAILED DESCRIPTION

[0028] Typical embodiments that embody the features and advantages of the present invention will be described in detail in the following description. It should be understood that the present invention can have various changes in different embodiments without departing from the scope of the present invention, and the descriptions and illustrations therein are essentially used for illustration purposes rather than for limiting the present invention.

[0029] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0030] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0031] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", 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 mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0032] At present, in some relevant household appliances, the cavity cleaning method includes water cleaning. Water cleaning requires that the liquid discharged from the cavity be pumped into the cavity or a waste water box through a pump, so two pipelines need to be arranged at the water outlet end of the pump; generally, the two pipelines are controlled by using two solenoid valves or an electric three-way valve for switching control, but it has high requirements on the sealing pressure of the valve body, and an inappropriately matched valve body may have leakage problems.

[0033] Figure 1 It is a structural schematic diagram of a household appliance according to an embodiment of the present invention. Figure 2 yes Figure 1 A schematic diagram of the partial structure inside the box 1. Figure 3 yes Figure 2Schematic diagram of the structure from another perspective.

[0034] See also Figures 1 to 3 As shown, the household appliance provided by the embodiment of the present invention mainly comprises a housing 1 and a cleaning system arranged in the housing 1. The following takes an oven as an example to describe various structures of the household appliance.

[0035] The box body 1 is configured as a housing of a household appliance, and the box body 1 is a rectangular hollow structure. It should be noted that in other embodiments, the box body 1 may also adopt a housing structure of other shapes, and the specific shape of the box body 1 may be adjusted as required, and is not limited here.

[0036] The box body 1 is provided with an inner cavity 10, which can be used for high-temperature cooking of food by steaming, baking, etc. It should be noted that in other embodiments, the inner cavity 10 can be used as other functional cavities. For example, when the household appliance is a dishwasher, the inner cavity 10 can be used to wash tableware such as bowls and plates. When the household appliance is a disinfection cabinet, the inner cavity 10 can be used to disinfect tableware such as bowls and plates.

[0037] See also Figures 1 to 3 As shown, an inner liner 11 is disposed in the box body 1, and an inner cavity 10 is formed in the inner liner 11. The front end of the inner liner 11 has an opening, and the front end opening of the inner liner 11 is connected to the interior of the inner cavity 10.

[0038] In some embodiments, an opening is provided on the front side wall of the box body 1, and the front side opening of the box body 1 is arranged opposite to the front end opening of the inner cavity 10 of the inner pot 11. Therefore, the food to be cooked can be put into the inner cavity 10 through the front side opening of the box body 1 for high temperature cooking. At the same time, after cooking, the food can be taken out of the inner cavity 10 through the front side opening of the box body 1.

[0039] See also Figure 1 As shown, in some embodiments, a door 2 is provided on the front side of the box body 1. The door 2 is movably arranged on the front side wall of the box body 1, and the door 2 can open and close the front opening of the box body 1, and then open and close the inner cavity 10.

[0040] See also Figures 1 to 3 As shown, in some embodiments, a door frame 12 is provided on the front side wall of the box body 1, and the box door 2 is rotatably connected to the front side of the door frame 12. The front opening of the box body 1 is opened at the center of the door frame 12, that is, the door frame 12 is arranged around the periphery of the front opening of the box body 1. The front opening of the inner cavity 10 in the inner liner 11 is directly opposite to the center of the door frame 12, and the door frame 12 is arranged around the periphery of the front end opening of the inner liner 11. When the box door 2 is closed, the periphery edge of the box door 2 fits with the front side of the door frame 12, sealing the gap between the box door 2 and the door frame 12, thereby being able to close the inner cavity 10.

[0041] In some embodiments, a door seal (not shown) is provided around the front opening of the box body 1, and the door seal is provided in the gap between the peripheral side of the inner liner 11 and the door frame 12. When the box door 2 is closed, the box door 2 can abut against the door seal, sealing the gap between the door frame 12 and the box door 2, thereby sealing the front opening of the box body 1, that is, sealing the front opening of the inner cavity 10.

[0042] See also Figure 2 and Figure 3 As shown, in some embodiments, a heat dissipation duct (not shown in the figure) is provided in the box body 1, and the heat dissipation duct is provided outside the inner liner 11. Specifically, the heat dissipation duct can be provided in a cavity (not shown in the figure) formed between the inner liner 11 and the box body 1. The air inlet end of the heat dissipation duct is connected to the cavity, and the air outlet end of the heat dissipation duct is connected to the outside of the box body 1. At the same time, a heat dissipation fan 131 is provided in the heat dissipation duct, and the heat dissipation fan 131 is used to provide wind power, extract air in the cavity, and discharge the heat in the cavity to the outside of the box body 1 through the heat dissipation duct, so as to realize the heat dissipation function inside the box body 1.

[0043] In some embodiments, the heat dissipation duct is disposed above the top of the inner liner 11, and the air outlet of the heat dissipation duct faces the front side of the box 1 and is connected to the front space of the box 1. Therefore, the heat dissipation duct can exhaust and dissipate heat from the front side of the box 1.

[0044] In some embodiments, the heat dissipation fan 131 is disposed at the air inlet end of the heat dissipation air duct. The heat dissipation fan 131 adopts a cross-flow fan to increase the wind force at the air inlet end of the heat dissipation air duct, improve the efficiency of extracting air in the cavity, and further improve the heat dissipation efficiency in the cavity.

[0045] See also Figure 2 and Figure 3 As shown, in some embodiments, a supporting top plate 14 is provided in the box body 1, and the supporting top plate 14 is arranged above the inner liner 11 at intervals. An air guide cover 132 is provided on the top surface of the supporting top plate 14, and the air guide cover 132 and the supporting top plate 14 are enclosed to form a heat dissipation air duct. At this time, the rear end of the air guide cover 132 serves as the air inlet end of the heat dissipation air duct, and the heat dissipation fan 131 is provided at the rear end of the air guide cover 132. The front end of the air guide cover 132 faces the front side of the box body 1 and serves as the air outlet end of the heat dissipation air duct.

[0046] In some embodiments, a support back plate 15 is further provided in the box body 1, and the support back plate 15 is provided on the back side of the inner liner 11. The bottom of the support back plate 15 is supported on the bottom plate of the box body 1, and the top of the support back plate 15 is connected to the rear end of the support top plate 14. The front end of the support top plate 14 is fixed on the front wall of the box body 1, so that the support top plate 14 can be stably fixed on the upper side of the inner liner 11.

[0047] In some embodiments, a heating device (not shown in the figure) is provided in the box body 1. The heating device is provided on the top wall of the inner tank 11. The heating device is used to heat the air in the inner cavity 10, thereby increasing the temperature inside the inner cavity 10.

[0048] In some embodiments, a heating fan (not shown in the figure) is provided at the rear side wall of the inner cavity 10. The heating fan is used to generate wind force to transport the hot air generated by the heating device to other areas of the inner cavity 10, thereby enabling the interior of the inner cavity 10 to be evenly heated.

[0049] It should be noted that, in some other embodiments, the heating device may also be disposed on the rear wall or other side walls of the inner cavity 10 to heat the interior of the inner cavity 10 from the rear area or other areas of the inner cavity 10 .

[0050] Figure 4 yes Figure 3 Schematic diagram of part of the cleaning system.

[0051] See also Figures 2 to 4 As shown, the cleaning system is arranged in the box 1, and the cleaning system is used to realize the self-cleaning function. The cleaning system includes a clean water box 31, a water inlet pipeline 32 and a water pump 33.

[0052] The clean water box 31 is arranged in the box body 1, and the clean water box 31 is used to store clean water, that is, clean water. The first end of the water inlet pipe 32 is connected to the clean water box 31, and the second end of the water inlet pipe 32 is connected to the water inlet end of the water pump 33, and the water outlet end of the water pump 33 is connected to the inner cavity 10. The water pump 33 is used to pump the clean water in the clean water box 31 into the inner cavity 10, and then supply water to the inner cavity 10, so as to clean the inner wall of the inner cavity 10 with water.

[0053] In some embodiments, the cleaning system further includes a steam generator (not shown). The water outlet of the water pump 33 is connected to the inlet of the steam generator, and the outlet of the steam generator is connected to the interior of the inner cavity 10. Therefore, the water pump 33 can pump the clean water in the clean water box 31 into the steam generator, which is heated by the steam generator, and the steam generated can be transported into the inner cavity 10, and the steam is used to perform steam cooking or steam cleaning functions on the inner cavity 10.

[0054] See also Figure 3 As shown, in some embodiments, the clean water box 31 is fixed above the support top plate 14. The water inlet pipe 32 is arranged on the back side of the inner tank 11 and fixed on the back side of the support back plate 15. The water pump 33 is fixed on the back side of the support back plate 15.

[0055] Figure 5 yes Figure 3 Schematic diagram of part of the structure from another perspective. Figure 6 yes Figure 5Schematic diagram of the enlarged structure of area A in the middle.

[0056] See also Figures 2 to 6 As shown, in some embodiments, the cleaning system further includes a nozzle 41 , a circulation pump 42 and a waste water box 43 .

[0057] The nozzle 41 is provided with a nozzle 411, which is formed at the bottom end of the nozzle 41 and arranged in the inner cavity 10. The nozzle 41 is used to spray water or cleaning liquid into the inner cavity 10 through the nozzle 411, thereby cleaning the inner wall of the inner cavity 10.

[0058] See also Figures 4 to 6 As shown, in some embodiments, a limiting rib 412 is convexly provided on the outer peripheral wall of the bottom end of the nozzle 41, and the limiting rib 412 is annular and arranged around the outer peripheral wall of the bottom end of the nozzle 41. At the same time, a mounting hole (not shown in the figure) matching with the nozzle 41 is opened on the top wall of the inner liner 11, and the bottom end of the nozzle 41 is penetrated through the mounting hole, and the limiting rib 412 is attached to the top wall of the inner liner 11, thereby limiting and fixing the nozzle 41 on the top wall of the inner liner 11.

[0059] See also Figure 6 As shown, in some embodiments, an upwardly extending assembly groove 101 is concavely provided on the top surface of the inner cavity 10, and the mounting hole is provided in the assembly groove 101. When the bottom end of the nozzle 41 is inserted into the mounting hole, the limiting rib 412 can be embedded in the assembly groove 101, and the bottom end surfaces of the nozzle 41 and the limiting rib 412 are flush with the top surface of the inner cavity 10, so that the inner wall of the inner cavity 10 can be kept flat.

[0060] See also Figures 2 to 5 As shown, the circulation pump 42 is arranged in the box body 1 and outside the inner tank 11. The circulation pump 42 can be a high-pressure pump, and the water outlet end of the circulation pump 42 is connected to the first end of the cleaning pipeline 44, and the second end of the cleaning pipeline 44 is connected to the inside of the nozzle 41. At the same time, a water collecting tank 111 is provided in the center concave at the bottom of the inner cavity 10, and a drain port 112 is provided at the bottom of the water collecting tank 111. A drain pipe (not shown in the figure) is provided below the bottom of the inner tank 11, and the water collecting tank 111 is connected to the water inlet end of the circulation pump 42 through the drain port 112. Therefore, the circulating pump 42 can extract the liquid in the sump 111 through the drain port 112, that is, extract the liquid in the inner cavity 10, and introduce it into the interior of the nozzle 41 through the cleaning pipe 44, and then spray it into the inner cavity 10 through the nozzle 411 of the nozzle 41, thereby cleaning the inner wall of the inner cavity 10. At the same time, the water sprayed on the inner wall of the inner cavity 10 can flow downward along the wall to the sump 111, and be extracted by the circulating pump 42 again, thereby realizing the circulation cleaning of the inner wall of the inner cavity 10 and realizing the water cleaning function of the inner cavity 10.

[0061] It should be noted that before performing the cleaning operation, detergent can be pre-placed in the water collection tank 111, and the clean water in the clean water box 31 is transported into the inner cavity 10 through the water inlet pipe 32 by the water pump 33, thereby dissolving the detergent and mixing the detergent with water to form a cleaning liquid; the cleaning liquid in the inner cavity 10 is then extracted by the circulation pump 42 and sprayed onto the inner wall of the inner cavity 10 through the nozzle 411, thereby effectively improving the cleaning effect of the inner cavity 10.

[0062] In some embodiments, the cleaning system further includes a water collecting box 45, and the drain port 112 at the bottom of the water collecting tank 111 is connected to the water collecting box 45 through a drain pipe. The installation height of the water collecting box 45 is lower than the water collecting tank 111, so that the water in the water collecting tank 111 can automatically flow into the water collecting box 45. Therefore, the water collected in the water collecting tank 111 can be automatically discharged into the water collecting box 45 through the drain port 112 and the drain pipe. At the same time, the water inlet end of the circulation pump 42 is connected to the water collecting box 45, so that the circulation pump 42 can extract the water in the water collecting tank 111 through the water collecting box 45.

[0063] See also Figures 2 to 5 As shown, in some embodiments, the wastewater box 43 is arranged in the box body 1 and outside the inner tank 11. The water outlet end of the circulation pump 42 is also connected to the first end of the wastewater pipeline 46, and the second end of the wastewater pipeline 46 is connected to the wastewater box 43. Therefore, after the inner wall of the inner cavity 10 is circulated and cleaned, the sewage in the inner cavity 10 can be extracted by the circulation pump 42, discharged from the inner cavity 10 through the wastewater pipeline 46, and transported to the wastewater box 43 for collection.

[0064] It should be noted that, in other embodiments, the waste water box 43 may also be disposed outside the housing 1. Alternatively, the second end of the waste water pipe 46 may also be directly connected to the outside of the housing 1. After the inner wall of the inner cavity 10 is circulated and cleaned, the liquid in the inner cavity 10 may be extracted by the circulation pump 42, and discharged from the inner cavity 10 through the waste water pipe 46, and directly discharged outside the housing 1.

[0065] Figure 7 yes Figure 4 Schematic diagram of the structure of the switch control device 5. Figure 8 yes Figure 7 Schematic diagram of the structure from another perspective. Fig. 9 yes Figure 8 Schematic diagram of the decomposition. Fig.10 yes Fig. 9 Schematic diagram of some structures in . Fig.11 yes Fig.10 Top view of the . Fig.12 yes Fig.11 Schematic diagram of some structures in .

[0066] See also Figures 3 to 12As shown, in some embodiments, the cleaning system further includes a switch control device 5, which is mounted on the support back plate 15. Parts of the cleaning pipeline 44 and the wastewater pipeline 46 are arranged in parallel on the support back plate 15, so that the switch control device 5 can be connected to the cleaning pipeline 44 and the wastewater pipeline 46 respectively. The switch control device 5 is used to open and close the cleaning pipeline 44 and the wastewater pipeline 46 respectively. Specifically, the switch control device 5 is a mechanical switch, and the switch control device 5 can close or open the cleaning pipeline 44 by clamping or loosening the cleaning pipeline 44. Similarly, the switch control device 5 can close or open the wastewater pipeline 46 by clamping or loosening the wastewater pipeline 46.

[0067] See also Figures 7 to 12 As shown, in some embodiments, the switch control device 5 includes a body 51, a cover 52, a cam 53 and a drive unit 54. The body 51 is provided with a mounting cavity 50, which is formed by a recessed arrangement on one side of the body 51. The mounting cavity 50 is used for the cleaning pipeline 44 and the wastewater pipeline 46 to pass through and install. The cover 52 covers the body 51 and covers the side of the body 51 where the mounting cavity 50 is located, so that the mounting cavity 50 can be enclosed between the body 51 and the cover 52.

[0068] See also Fig.11 and Fig.12 As shown, in some embodiments, a first mounting position 501 and a second mounting position 502 are formed on opposite sides of the mounting cavity 50. The cam 53 is rotatably disposed in the mounting cavity 50 and disposed between the first mounting position 501 and the second mounting position 502. When the cleaning pipeline 44 and the wastewater pipeline 46 are installed in the mounting cavity 50, at least part of the cleaning pipeline 44 can be installed in the first mounting position 501, and at least part of the wastewater pipeline 46 can be installed in the second mounting position 502. At the same time, the cam 53 is rotatably disposed between the cleaning pipeline 44 and the wastewater pipeline 46, so that the cleaning pipeline 44 and the wastewater pipeline 46 can be arranged on opposite sides of the cam 53, respectively.

[0069] Fig.13 yes Fig.11 Schematic diagram of the structure in a usage state.

[0070] See also Fig.11 and Fig.13As shown, in some embodiments, when the cam 53 rotates toward the second installation position 502, the cam 53 can contact the waste water pipe 46 located in the second installation position 502, and can gradually squeeze the waste water pipe 46, so that the waste water pipe 46 can be pressed between the cam 53 and the side wall of the second installation position 502, and then the waste water pipe 46 is pressed and closed. At the same time, the cleaning pipe 44 in the first installation position 501 is in an open state because it is not squeezed by the cam 53, that is, the cleaning pipe 44 is opened. Therefore, after the circulation pump 42 is turned on at this time, the circulation pump 42 can extract the liquid in the inner cavity 10 through the drain port 112, and spray it into the inner cavity 10 through the cleaning pipe 44 and the nozzle 411, so as to realize the circulation cleaning of the inner wall of the inner cavity 10.

[0071] Fig.14 yes Fig.11 Schematic diagram of the structure in another usage state.

[0072] See also Fig.11 and Fig.14 As shown, in some embodiments, when the cam 53 rotates toward the first installation position 501, the cam 53 can contact the cleaning pipeline 44 located in the first installation position 501, and can gradually squeeze the cleaning pipeline 44, so that the cleaning pipeline 44 can be pressed between the cam 53 and the side wall of the first installation position 501, and then the cleaning pipeline 44 is pressed and closed. At the same time, the waste water pipeline 46 in the second installation position 502 is in an open state because it is not squeezed by the cam 53, that is, the waste water pipeline 46 is opened. Therefore, at this time, after the circulation pump 42 is turned on, the circulation pump 42 can extract the liquid in the inner cavity 10 through the drain port 112, and discharge the extracted liquid from the inner cavity 10 through the waste water pipeline 46, and transport it into the waste water box 43.

[0073] It should be noted that the cam 53 rotates and cooperates with the side walls of the first installation position 501 and the second installation position 502 in the body 51 to squeeze each other, so the structure is reliable and the cost is low. In addition, the cam 53 and the body 51 are both located outside the cleaning pipeline 44 and the waste water pipeline 46, so there will be no impact on the water pressure inside the pipeline, and there will be no risk of blockage. Therefore, the problem of easy leakage of the valve body can be effectively avoided and solved by replacing the valve body with the switch control device 5.

[0074] See also Figures 11 to 14 As shown, in some embodiments, Fig.11 The state is the initial state, in which the cleaning pipeline 44 and the waste water pipeline 46 are both in the open state. When the self-cleaning function is started, cleaning is performed first, and the cam 53 is Fig.11 The state transitions to Fig.13 The waste water pipeline 46 is closed and the fluid in the cleaning pipeline 44 flows. When the waste water recovery stage comes, the cam 53 is Fig.13 The state is converted to Fig.14 At this time, the cleaning pipeline 44 is closed, the waste water pipeline 46 is opened, the fluid in the waste water pipeline 46 flows, and the waste water is recovered into the waste water box 43. After the self-cleaning is completed, the state of the cam 53 is maintained Fig.14 When the self-cleaning function is started next time, the cam 53 is Fig.14 The state transitions to Fig.13 state, and then by Fig.13 The state is converted to Fig.14 The state of cam 53 continues to maintain Fig.14 When wastewater is recycled in other scenarios, wastewater pipeline 46 is in the open state and wastewater recycling can be carried out directly. Figure 3 and Figure 4 As shown, in some embodiments, the body 51 is fixed on the support back plate 15 and is detachably fixed to the back of the support back plate 15. It should be noted that in other embodiments, the body 51 can also be fixed to other positions in the box body 1, such as the side wall of the liner 11. In other embodiments, the body 51 can also be integrally formed on the back of the support back plate 15 or integrally formed at other positions in the box body 1.

[0075] See also Fig.11 and Fig.14 As shown, in some embodiments, a first installation port 511 and a second installation port 512 are provided at one end of the body 51, the first installation port 511 and the second installation port 512 are arranged at intervals, and the first installation port 511 and the second installation port 512 are respectively communicated with the first end of the installation cavity 50. A third installation port 513 and a fourth installation port 514 are provided at the other end of the body 51, the third installation port 513 and the fourth installation port 514 are arranged at intervals, and the third installation port 513 and the fourth installation port 514 are respectively communicated with the second end of the installation cavity 50. When the cleaning pipeline 44 is installed in the installation cavity 50, the cleaning pipeline 44 can extend into the installation cavity 50 from the first installation port 511 and pass out from the third installation port 513, that is, the first installation position 501 is formed between the first installation port 511 and the third installation port 513. When the wastewater pipe 46 is installed in the installation cavity 50 , the wastewater pipe 46 can extend into the installation cavity 50 from the second installation opening 512 and pass out from the fourth installation opening 514 , that is, the second installation position 502 is formed between the second installation opening 512 and the fourth installation opening 514 .

[0076] In some embodiments, the two opposite side walls of the mounting cavity 50 are respectively the first side wall 515 and the second side wall 516. The first mounting opening 511 and the third mounting opening 513 are disposed at opposite ends of the first side wall 515. The third mounting opening 513 and the fourth mounting opening 514 are disposed at opposite ends of the second side wall 516. Therefore, the first mounting position 501 can be formed between the first mounting opening 511, the third mounting opening 513 and the first side wall 515 of the mounting cavity 50. The second mounting position 502 can be formed between the second mounting opening 512, the fourth mounting opening 514 and the second side wall 516 of the mounting cavity 50. Therefore, when the cam 53 rotates toward the direction of the first mounting position 501, the cleaning pipeline 44 can be compressed between the cam 53 and the first side wall 515 of the mounting cavity 50, so that the cleaning pipeline 44 is compressed and closed. When the cam 53 rotates toward the second installation position 502 , the waste water pipe 46 can be compressed between the cam 53 and the second side wall 516 of the installation cavity 50 , so that the waste water pipe 46 is compressed and closed.

[0077] See also Fig.11 and Fig.14 As shown, in some embodiments, a first extrusion slope 5151 is formed on the first side wall 515, and in the direction from the first end toward the second end of the installation cavity 50, the first extrusion slope 5151 extends obliquely toward the direction close to the second side wall 516. The first extrusion slope 5151 and the cam 53 are arranged opposite to each other with a gap, and the first extrusion slope 5151 and the cam 53 are respectively arranged on opposite sides of the cleaning pipeline 44. Therefore, when the cam 53 rotates toward the direction of the first installation position 501, the cleaning pipeline 44 can be pressed between the cam 53 and the first extrusion slope 5151.

[0078] In some embodiments, a second extrusion slope 5161 is formed on the second side wall 516, and in the direction from the first end toward the second end of the installation cavity 50, the second extrusion slope 5161 extends obliquely toward the direction close to the first side wall 515. The second extrusion slope 5161 and the cam 53 are arranged opposite to each other with a gap, and the second extrusion slope 5161 and the cam 53 are respectively arranged on opposite sides of the waste water pipe 46. Therefore, when the cam 53 rotates toward the second installation position 502, the waste water pipe 46 can be compressed between the cam 53 and the second extrusion slope 5161.

[0079] See also Fig.11 and Fig.14As shown, in some embodiments, the spacing between the first installation port 511 and the second installation port 512 is greater than the spacing between the third installation port 513 and the fourth installation port 514, and the width of the first end of the installation cavity 50 is greater than the width of the second end of the installation cavity 50. At the same time, the width of the first end of the installation cavity 50 is greater than the width of the second end thereof. The first installation port 511 is arranged opposite to the first extrusion slope 5151, and the second installation port 512 is arranged opposite to the second extrusion slope 5161. Therefore, when the cleaning line 44 extends into the installation cavity 50 from the first installation port 511, it can be bent and extended at the first extrusion slope 5151 and then extend from the third installation port 513, so that the cleaning line 44 is arranged close to the first extrusion slope 5151, so that the cleaning line 44 can be smoothly clamped and fixed between the first extrusion slope 5151 and the cam 53, so that the cleaning line 44 is smoothly pressed and closed. Similarly, after the wastewater pipe 46 extends into the installation cavity 50 from the second installation port 512, it can bend and extend at the second extrusion slope 5161 and then extend from the fourth installation port 514, so that the wastewater pipe 46 is arranged close to the second extrusion slope 5161, so that the wastewater pipe 46 can be smoothly clamped and fixed between the second extrusion slope 5161 and the cam 53, so that the wastewater pipe 46 can be smoothly pressed and closed.

[0080] In some embodiments, the first extrusion slope 5151 and the second extrusion slope 5161 are arranged opposite to each other, and the cam 53 is rotatably disposed between the first extrusion slope 5151 and the second extrusion slope 5161. Therefore, when the cam 53 rotates toward the first installation position 501, the cleaning pipeline 44 can be compressed between the cam 53 and the first extrusion slope 5151. When the cam 53 rotates toward the second installation position 502, the waste water pipeline 46 can be compressed between the cam 53 and the second extrusion slope 5161.

[0081] Fig.15 yes Fig. 9 A schematic structural diagram of the middle cover body 52 and the driving unit 54.

[0082] See also Fig.11 and Fig.15As shown, in some embodiments, the drive unit 54 is fixed on the cover 52, and the output shaft 541 of the drive unit 54 passes through the cover 52 and extends into the installation cavity 50, and the output shaft 541 of the drive unit 54 is connected to the cam 53. The drive unit 54 adopts a rotary motor, and the rotary motor is a forward and reverse motor, so the drive unit 54 can drive the cam 53 to rotate in the installation cavity 50 in the forward and reverse directions. Specifically, the drive unit 54 can drive the cam 53 to rotate in the direction of the second installation position 502, thereby pressing and fixing the wastewater pipeline 46 between the cam 53 and the side wall of the second installation position 502, so that the wastewater pipeline 46 is closed and the cleaning pipeline 44 is opened. When the output shaft 541 of the drive unit 54 rotates in the opposite direction, the drive unit 54 can also drive the cam 53 to rotate in the direction of the first installation position 501, thereby pressing and fixing the cleaning pipeline 44 between the cam 53 and the side wall of the first installation position 501.

[0083] It should be noted that, in other embodiments, the switch control device 5 may not include the driving unit 54 , and the cam 53 is rotated between the first installation position 501 and the second installation position 502 by manually controlling the rotation of the cam 53 .

[0084] In some embodiments, the cover body 52 is provided with a through hole 521 arranged opposite to the cam 53. The output shaft 541 of the driving unit 54 passes through the through hole 521 and is in driving connection with the cam 53.

[0085] Fig.16 yes Fig. 9 Schematic diagram of the structure of the middle cam 53.

[0086] See also Figures 9 to 16 As shown, in some embodiments, one end of the cam 53 is provided with an axial hole 531, and the axial hole 531 is eccentrically arranged. The output shaft 541 of the driving unit 54 extends into the installation cavity 50 and is inserted into the axial hole 531 of the cam 53, so that the output shaft 541 of the driving unit 54 can drive the cam 53 to rotate in the installation cavity 50.

[0087] In some embodiments, the other end of the cam 53 away from the shaft hole 531 is formed with a pressing portion 532. When the cam 53 is installed in the installation cavity 50, the pressing portion 532 is arranged toward the first end of the installation cavity 50. When the driving unit 54 drives the cam 53 to rotate toward the first installation position 501, the cleaning pipeline 44 can be compressed between the pressing portion 532 of the cam 53 and the first pressing inclined surface 5151. When the driving unit 54 drives the cam 53 to rotate toward the second installation position 502, the waste water pipeline 46 can be compressed between the pressing portion 532 of the cam 53 and the second pressing inclined surface 5161.

[0088] See also Fig.12 and Fig.16As shown, in some embodiments, a limiting groove 533 is recessed on the side wall of the cam 53 away from the driving unit 54, and the limiting groove 533 is arranged at one end of the shaft hole 531 away from the driving unit 54. At the same time, a limiting portion 503 cooperating with the limiting groove 533 is convexly arranged in the installation cavity 50, and the limiting portion 503, the shaft hole 531 and the output shaft 541 of the driving unit 54 are coaxially arranged. Therefore, when the cam 53 is installed in the installation cavity 50, the limiting portion 503 can extend into the limiting groove 533, so that the cam 53 is rotatably arranged in the installation cavity 50 and can rotate with the limiting portion 503 as the axis. Therefore, the output shaft 541 of the driving unit 54 can drive the cam 53 to rotate relative to the limiting portion 503, so that the cam 53 can be limited on the limiting portion 503 and rotate.

[0089] See also Figures 9 to 15 As shown, in some embodiments, a fixing column 522 is convexly provided on one side of the cover 52 facing the body 51, and a fixing groove 504 is concavely provided on the body 51 and arranged opposite to the fixing column 522. When the cover 52 is covered on the body 51, the fixing column 522 can be inserted and fixed in the fixing groove 504, thereby fixing the cover 52 on the body 51.

[0090] In some embodiments, a fixing hole (not shown) is provided in the fixing groove 504, and a screw hole (not shown) is provided on the fixing column 522. Therefore, the fixing column 522 can be locked in the fixing groove 504 by screws inserted into the fixing hole and the screw hole, thereby locking and fixing the cover 52 on the body 51.

[0091] It should be noted that, in other embodiments, the fixing column 522 may also be protruded from the mounting portion of the main body 51 , and the fixing groove 504 is provided on the side of the cover 52 facing the main body 51 .

[0092] See also Figures 9 to 15 As shown, in some embodiments, a hook 523 is convexly provided on the side of the cover 52 facing the body 51, and a convex protrusion 505 is convexly provided on the side wall of the installation cavity 50. When the cover 52 is covered on the installation cavity 50, the hook 523 can be engaged with the side of the cover 52 away from the convex protrusion 505, thereby enabling the cover 52 to be engaged and fixed on the body 51.

[0093] In some embodiments, two hooks 523 are convexly disposed on the cover 52, and the two hooks 523 are arranged at intervals. At the same time, when the cover 52 is covered on the installation cavity 50, the two hooks 523 can be respectively engaged with the opposite sides of the protrusion 505, so that the cover 52 is stably engaged and fixed on the body 51.

[0094] It should be noted that, in other embodiments, the hook 523 may also be protruded in the mounting portion of the main body 51 , and the protrusion 505 may also be provided on the side of the cover 52 facing the main body 51 .

[0095] It should be noted that the switch control device 5 can be used to control the opening and closing of the first pipeline such as the cleaning pipeline 44 and the second pipeline such as the wastewater pipeline 46, but is not limited thereto. The first pipeline and the second pipeline can also be pipelines that need to be controlled to open and close in addition to the cleaning pipeline 44 and the wastewater pipeline 46. One end of the first pipeline and one end of the second pipeline are connected to a common power source, such as a pump, or the first pipeline and the second pipeline share a section of the pipeline, such as Figure 4 The part shown in the dotted circle.

[0096] Specifically, the first pipeline and the second pipeline are respectively arranged in the box body 1, at least part of the first pipeline is passed through the first installation position 501, at least part of the second pipeline is passed through the second installation position 502, and the first pipeline and the second pipeline are respectively arranged on opposite sides of the cam 53.

[0097] When the driving unit 54 drives the cam 53 to rotate toward the second installation position 502 , the second pipeline can be pressed between the cam 53 and the side wall of the second installation position 502 , so that the second pipeline is closed and the first pipeline is opened.

[0098] Similarly, when the driving unit 54 can drive the cam 53 to rotate toward the first installation position 501, the first pipeline can be pressed between the cam 53 and the side wall of the first installation position 501, so that the first pipeline is closed and the second pipeline is opened.

[0099] Based on the above technical solution, the embodiments of the present invention have at least the following advantages and positive effects:

[0100] In the household appliance of the embodiment of the present invention, a drain port 112 is provided at the bottom of the inner cavity 10. The circulating pump 42 cooperates with the clean water pipeline to extract the liquid in the inner cavity 10 through the drain port 112, and sprays it into the inner cavity 10 through the cleaning pipeline 44, so as to realize the circulation cleaning of the inner wall of the inner cavity 10; the circulating pump 42 cooperates with the waste water pipeline 46 to extract the liquid in the inner cavity 10 through the drain port 112, and discharge the liquid from the inner cavity 10 through the waste water pipeline 46; at the same time, a switch control device 5 is arranged between the clean pipeline 44 and the waste water pipeline 46, and the switch control device 5 includes a body 51 and a cam 53. The installation cavity 50 is arranged in the body 51, and the clean pipeline 44 and the waste water pipeline 46 are respectively arranged in the first installation position 501 and the second installation position 502 of the installation cavity 50. The cam 53 is rotatably arranged between the first mounting position 501 and the second mounting position 502. The cam 53 rotates so that the wastewater pipe 46 can be pressed between the cam 53 and the side wall of the second mounting position 502, thereby closing the wastewater pipe 46 and opening the cleaning pipe 44. The circulating pump 42 can extract the liquid in the inner cavity 10 through the drain port 112 and spray it into the inner cavity 10 through the cleaning pipe 44 to circulate and clean the inner wall of the inner cavity 10; and the cleaning pipe 44 can be pressed between the cam 53 and the side wall of the first mounting position 501, thereby closing the cleaning pipe 44 and opening the wastewater pipe 46, so that the liquid extracted by the circulating pump 42 can be discharged from the inner cavity 10 through the wastewater pipe 46. Therefore, by cooperating with the main body 51 and the cam 53 of the switch control device 5, the on-off of the cleaning pipeline 44 and the waste water pipeline 46 can be controlled more conveniently, while reducing costs and solving the problem of easy leakage of the valve body.

[0101] Although the present invention has been described with reference to several typical embodiments, it should be understood that the terms used are illustrative and exemplary, rather than restrictive. Since the present invention can be embodied in a variety of forms without departing from the spirit or essence of the invention, it should be understood that the above embodiments are not limited to any of the foregoing details, but should be interpreted broadly within the spirit and scope defined by the appended claims, so all changes and modifications falling within the scope of the claims or their equivalents should be covered by the appended claims.

Claims

1. A household appliance, characterized in that: include: A housing, which forms the outer shell of the household appliance; An inner cavity is provided in the box body; a drainage port is provided at the bottom of the inner cavity; A circulation pump, wherein the water inlet end of the circulation pump is connected to the drain outlet; A cleaning pipeline, one end of which is connected to the water outlet of the circulation pump, and the other end of which is connected to the inner cavity; A wastewater pipeline, one end of which is connected to the water outlet of the circulation pump, and the other end of which is used to discharge the wastewater in the inner cavity; A switch control device comprises a body and a cam, wherein a mounting cavity is provided in the body, and a first mounting position and a second mounting position are formed on opposite sides of the mounting cavity; the cam is rotatably disposed in the mounting cavity and disposed between the first mounting position and the second mounting position; Wherein, at least part of the cleaning pipeline is arranged in the first installation position, at least part of the wastewater pipeline is arranged in the second installation position, and the cleaning pipeline and the wastewater pipeline are arranged on opposite sides of the cam; When the cam rotates toward the second installation position, the wastewater pipeline can be pressed between the cam and the side wall of the second installation position to close the wastewater pipeline; at this time, the cleaning pipeline is opened, and the circulation pump can extract the liquid in the inner cavity through the drain port and spray it into the inner cavity through the cleaning pipeline to circulate and clean the inner wall of the inner cavity; When the cam rotates toward the first mounting position, the cleaning pipeline can be compressed between the cam and the side wall of the first mounting position to close the cleaning pipeline; at this time, the wastewater pipeline is opened, and the circulation pump can extract the liquid in the inner cavity through the drain port and discharge the extracted liquid out of the inner cavity through the wastewater pipeline.

2. The household appliance according to claim 1, characterized in that: The switch control device further comprises a driving unit, wherein an output shaft of the driving unit is connected to the cam; The driving unit can drive the cam to rotate toward the second installation position, so that the waste water pipeline can be pressed between the cam and the side wall of the second installation position; The driving unit can also drive the cam to rotate toward the first installation position, so that the cleaning pipeline can be compressed between the cam and the side wall of the first installation position.

3. The household appliance according to claim 1, characterized in that: One end of the body is provided with a first installation opening and a second installation opening arranged at intervals, and the first installation opening and the second installation opening are respectively connected to the first end of the installation cavity; The other end of the body is provided with a third installation opening and a fourth installation opening arranged at intervals, and the third installation opening and the fourth installation opening are respectively connected to the second end of the installation cavity; The opposite side walls of the installation cavity are respectively a first side wall and a second side wall, the first installation opening and the third installation opening are arranged at opposite ends of the first side wall, and the third installation opening and the fourth installation opening are arranged at opposite ends of the second side wall; The first mounting position is formed between the first mounting opening, the third mounting opening and the first side wall, and the second mounting position is formed between the second mounting opening, the fourth mounting opening and the second side wall.

4. The household appliance according to claim 3, characterized in that: A first extrusion slope is formed on the first side wall, and in a direction from the first end toward the second end of the installation cavity, the first extrusion slope extends obliquely toward a direction close to the second side wall; A second extrusion slope is formed on the second side wall, and in the direction from the first end toward the second end of the installation cavity, the second extrusion slope extends obliquely toward the direction close to the first side wall; When the cam rotates toward the first installation position, the cleaning pipeline can be compressed between the cam and the first extrusion slope; When the cam rotates toward the second installation position, the waste water pipe can be compressed between the cam and the second extrusion slope.

5. The household appliance according to claim 4, characterized in that: The first extrusion slope and the second extrusion slope are arranged opposite to each other on the left and right sides, and the cam is rotatably arranged between the first extrusion slope and the second extrusion slope.

6. The household appliance according to claim 2, characterized in that: The switch control device further comprises a cover body, wherein the cover body is connected to one side of the body; The installation cavity is recessed on the side wall of the body facing the cover body, and the cover body is detachably covered on the installation cavity; a through hole arranged opposite to the cam is opened on the cover body; The driving unit is arranged on the cover body, and the output shaft of the driving unit passes through the through hole and is drivingly connected with the cam.

7. The household appliance according to claim 6, characterized in that: A fixing column is convexly arranged on one side of the cover body facing the main body, and a fixing groove arranged opposite to the fixing column is concavely arranged on the main body; the fixing column is inserted and fixed in the fixing groove.

8. The household appliance according to claim 6, characterized in that: A hook is convexly provided on one side of the cover body facing the main body, and a convexity is convexly provided on the side wall of the installation cavity; When the cover body is covered on the installation cavity, the hook is engaged with the side of the locking protrusion away from the cover body.

9. The household appliance according to claim 2, characterized in that: The cam is provided with an eccentrically arranged shaft hole, and the output shaft of the driving unit is inserted into the shaft hole; A limiting groove is concavely formed on the side wall of the cam away from the driving unit, and the limiting groove is arranged at one end of the shaft hole away from the driving unit; A limiting portion cooperating with the limiting groove is convexly provided in the installation cavity, and the limiting portion extends into and is arranged in the limiting groove; The output shaft of the driving unit can drive the cam to rotate relative to the limiting portion.

10. The household appliance according to claim 1, characterized in that: A nozzle is provided in the inner cavity, and a nozzle communicating with the inner cavity is provided on the nozzle; The nozzle is detachably arranged in the inner cavity, and the nozzle is detachably connected to an end of the cleaning pipeline away from the circulation pump; The circulation pump can extract the liquid in the inner cavity through the drain port, transport it into the spray head through the cleaning pipeline, and spray it into the inner cavity through the nozzle.

11. The household appliance according to claim 1, characterized in that: The household appliance further comprises a waste water box, which is connected to an end of the waste water pipeline away from the circulation pump; The circulation pump can extract the liquid in the inner cavity through the drain port, and discharge the extracted liquid into the waste water box through the waste water pipeline.

12. A household appliance, characterized in that: include: A housing, which forms the outer shell of the household appliance; An inner cavity is provided in the box body; The first installation position and the second installation position are arranged opposite to each other in the box body at an interval; A first pipeline is disposed in the box, and at least a portion of the first pipeline is passed through the first installation position; A second pipeline is disposed in the box, and at least a portion of the second pipeline is passed through the second installation position; A cam is rotatably disposed between the first installation position and the second installation position, and the first pipeline and the second pipeline are disposed on opposite sides of the cam; Wherein, when the cam rotates toward the second installation position, the second pipeline can be compressed between the cam and the side wall of the second installation position to close the second pipeline and open the first pipeline; When the cam rotates toward the first installation position, the first pipeline can be compressed between the cam and the side wall of the first installation position to close the first pipeline and open the second pipeline.

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