Laundry treating apparatus

Abstract

The utility model relates to a clothes processing device. The clothes processing device comprises a machine shell; a washing cavity is formed in the barrel assembly; the putting assembly comprises a water inlet box, a soap box and a putting pump; the soap box is arranged in the water inlet box in a drawable mode, and a liquid storage cavity is formed in the soap box. A constant-volume cavity is formed in the water inlet box, and the putting pump can pump the laundry detergent in the detergent storage cavity into the constant-volume cavity; a premixing water path is arranged in the water inlet box, one end of the premixing water path is connected with a water source, and the other end of the premixing water path is communicated with the washing cavity; a Venturi tube is arranged in the premixing water path, and a negative pressure suction port of the Venturi tube is arranged in the constant volume cavity in an extending manner; when water enters the premixing water path, the negative pressure suction port of the Venturi tube can extract laundry detergent in the constant volume cavity, air enters the premixing water path and is mixed with water in the premixing water path to form foam liquid, and then the foam liquid is put into the washing cavity.

Description

Technical Field

[0001] The utility model relates to the technical field of household appliances, and particularly relates to a clothes treatment device. Background Art

[0002] Clothes treatment devices such as drum washing machines and pulsator washing machines are household appliances that use electric energy to generate mechanical action to wash clothes. With the improvement of consumers' living standards, the requirements for clothes treatment devices are also getting higher and higher.

[0003] In related clothes treatment devices, the clothes treatment device usually has a housing and a drum assembly. The drum assembly is arranged inside the housing. The drum assembly includes an outer drum and an inner drum, and a washing cavity is formed inside the inner drum. A feeding assembly is usually arranged at the top of the housing. The feeding assembly includes a water inlet box and a soap box inside the water inlet box. When using the clothes treatment device to wash clothes, a feeding pump is used to extract the laundry detergent in the soap box and put it into the washing cavity through the water flow.

[0004] In current clothes treatment devices, after the feeding pump extracts the laundry detergent, it is usually directly put into the washing cavity, or enters the water distribution plate of the water inlet box and then is put into the washing cavity through a rubber tube. The laundry detergent put by the existing feeding assembly is not mixed sufficiently with water, and the washing effect is not ideal, which easily leads to a low washing ratio. Summary of the Utility Model

[0005] The purpose of the utility model can be to provide a clothes treatment device, which optimizes the structure of the feeding assembly of the clothes treatment device in related technologies to improve the mixing degree of the put laundry detergent with water and air.

[0006] The purpose of the utility model is not limited to the above-mentioned purposes. Those skilled in the art can clearly understand other purposes not mentioned through the following description.

[0007] To solve the above technical problems, the utility model adopts the following technical solutions:

[0008] The clothes treatment device according to an embodiment of the present utility model for achieving the above object includes: a casing configured as an outer shell of the clothes treatment device; a drum assembly disposed within the casing, a washing cavity being formed within the drum assembly; a dosing assembly including a water inlet box, a soap box, and a dosing pump; the water inlet box being disposed within the casing; the soap box being slidably disposed within the water inlet box, a liquid storage cavity being provided within the soap box; wherein, a fixed-volume cavity is provided within the water inlet box, and the dosing pump is capable of pumping the liquid within the liquid storage cavity into the fixed-volume cavity; a premixing water path is provided within the water inlet box, one end of the premixing water path being for connecting to a water source, and the other end of the premixing water path being for communicating with the washing cavity; a Venturi tube is provided within the premixing water path, the Venturi tube being disposed within the premixing water path, a negative-pressure suction port of the Venturi tube extending and arranged within the fixed-volume cavity; when water enters the premixing water path, the negative-pressure suction port of the Venturi tube is capable of sucking the liquid and air within the fixed-volume cavity into the premixing water path, mixing with the water within the premixing water path, and then being dispensed into the washing cavity.

[0009] In some embodiments of the present application, the Venturi tube is disposed above the fixed-volume cavity, and the negative-pressure air suction port of the Venturi tube extends downward and is arranged within the fixed-volume cavity.

[0010] In some embodiments of the present application, the water inlet box includes a water distribution plate and a top cover covering above the water distribution plate; the fixed-volume cavity is recessed on the top surface of the water distribution plate, and the fixed-volume cavity is enclosed between the bottom surface of the top cover and the top surface of the water distribution plate.

[0011] In some embodiments of the present application, the Venturi tube protrudes from the bottom surface of the top cover, the Venturi tube has a negative-pressure suction pipe extending downward, and the negative-pressure suction port is formed within the negative-pressure suction pipe; when the top cover covers the top surface of the water distribution plate, the negative-pressure suction pipe of the Venturi tube extends downward and is arranged within the fixed-volume cavity.

[0012] In some embodiments of the present application, the premixing water path is recessed on the top surface of the water distribution plate, and at least part of the water path of the premixing water path is enclosed between the bottom surface of the top cover and the top surface of the water distribution plate.

[0013] In some embodiments of the present application, a dosing cavity is provided within the water inlet box, the soap box is slidably disposed within the dosing cavity, a water outlet is provided at the bottom of the dosing cavity, and the water outlet communicates with the washing cavity; an overflow port is provided on the side wall of the fixed-volume cavity, and the overflow port communicates with the dosing cavity; when the liquid within the fixed-volume cavity reaches a preset height, the liquid within the fixed-volume cavity can flow through the overflow port to the dosing cavity, and then flow into the washing cavity through the water outlet.

[0014] In some embodiments of the present application, a main water inlet path is provided in the water inlet box. The main water inlet path has a main water inlet for communicating with a water source. The main water inlet path includes a first branch. One end of the first branch is communicated with the main water inlet, and the other end of the first branch is communicated with the constant volume chamber. The main water inlet path can supply water to the constant volume chamber through the first branch.

[0015] In some embodiments of the present application, a water leakage port is provided on the bottom surface of the constant volume chamber. The water leakage port is communicated with the dosing chamber, and the diameter of the water leakage port is less than or equal to a preset diameter. When the laundry detergent in the liquid storage chamber enters the constant volume chamber, the laundry detergent in the constant volume chamber cannot enter the dosing chamber through the water leakage port. When the first branch supplies water to the constant volume chamber, the water in the constant volume chamber can enter the dosing chamber through the water leakage port.

[0016] In some embodiments of the present application, a first outlet is formed at the water outlet end of the premixing water path. The dosing assembly includes a dosing tube. One end of the dosing tube is communicated with the first outlet, and the other end of the dosing tube is communicated with the washing chamber. The foam liquid formed in the premixing water path can be dispensed into the washing chamber through the dosing tube.

[0017] In some embodiments of the present application, the main water inlet path includes a second branch. One end of the second branch is communicated with the main water inlet, and a second outlet is formed at the other end of the second branch. The dosing assembly includes a cleaning tube. One end of the cleaning tube is communicated with the second outlet, and the other end of the cleaning tube is communicated with the washing chamber. The main water inlet path can clean a partial area in the washing chamber through the second branch and the cleaning tube.

[0018] In some embodiments of the present application, the cleaning area of the cleaning tube in the washing chamber at least partially overlaps with the dosing area of the dosing tube in the washing chamber.

[0019] In some embodiments of the present application, the dosing assembly includes a water inlet valve having a first valve port and a second valve port. The first valve port is connected to the water inlet end of the premixing water path through a premixing water inlet pipe, and the second valve port is connected to the main water inlet through a main water inlet pipe.

[0020] In some embodiments of the present application, the Venturi tube includes an inlet portion, a contraction portion, and a diffusion portion connected in sequence. The inlet portion is the water inlet end of the premixing water path. The diameter of the inlet portion gradually decreases in the liquid flow direction, and the diameter of the diffusion portion gradually increases in the liquid flow direction. One end of the negative pressure suction port is communicated with the contraction portion, and the other end of the negative pressure suction port extends and is arranged in the constant volume chamber and is communicated with the constant volume chamber.

[0021] In some embodiments of the present application, the diameter of the negative pressure suction port is 0.8 to 1.2 times the diameter of the contraction part.

[0022] The specific content of other embodiments is included in the detailed description and the drawings.

[0023] According to at least one of the embodiments of the present invention, the dispensing pump can pump the laundry detergent in the liquid storage cavity into the constant volume cavity. Through the pre-mixing water path and the negative pressure suction port of the Venturi tube, the laundry detergent and air in the constant volume cavity are extracted and mixed with the water flow in the pre-mixing water path to form a foam liquid, and the foam liquid is dispensed into the washing cavity, thereby improving the mixing degree of the dispensed laundry detergent and water.

[0024] According to at least one of the embodiments of the present invention, laundry detergent, air, and water can be dispensed into the washing cavity through the pre-mixing water path in cooperation with the Venturi tube to form a foam liquid, thereby improving the washing effect of the dispensed laundry detergent and the washing ratio of the laundry treatment device.

[0025] The effects of the present invention are not limited to the effects mentioned above. Those skilled in the art can clearly understand other effects not mentioned from the description of the claims. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 is a schematic structural diagram of a laundry treatment device according to an embodiment of the present invention.

[0027] Figure 2 is Figure 1 the internal structural diagram.

[0028] Figure 3 is Figure 2 the structural diagram of the dispensing assembly in it.

[0029] Figure 4 is Figure 3 the structural diagram from another perspective.

[0030] Figure 5 is Figure 3 an exploded view of it.

[0031] Figure 6 is Figure 5 the structural diagram of the soap box in it.

[0032] Figure 7 is Figure 6 the structural diagram in another state.

[0033] Figure 8 is Figure 7 the internal structural diagram.

[0034] Figure 9 isFigure 8 Partial decomposition schematic diagram.

[0035] Figure 10 is Figure 9 The front view of

[0036] Figure 11 is Figure 10 The sectional view taken along the line A-A in

[0037] Figure 12 is Figure 7 The structural schematic diagram of the box cover in

[0038] Figure 13 is Figure 12 The partial enlarged structural schematic diagram of the liquid extraction tube in

[0039] Figure 14 is Figure 13 A decomposition structural schematic diagram of

[0040] Figure 15 is Figure 10 The sectional view taken along the line B-B in

[0041] Figure 16 is Figure 15 The partial enlarged structural schematic diagram of

[0042] Figure 17 is Figure 5 A decomposition structural schematic diagram of the water inlet box in

[0043] Figure 18 is Figure 17 The partial structural schematic diagram in

[0044] Figure 19 is Figure 18 A decomposition schematic diagram of

[0045] Figure 20 is Figure 19 The structural schematic diagram of the water distribution plate in

[0046] Figure 21 is Figure 20 The structural schematic diagram from another perspective in

[0047] Figure 22 is Figure 19 The structural schematic diagram of the top cover in

[0048] Figure 23 is Figure 22 The structural schematic diagram from another perspective in

[0049] Figure 24 is Figure 4 The top view schematic diagram of

[0050] Figure 25 is Figure 24 a sectional view taken along the C-C direction in

[0051] Figure 26 is Figure 25 a schematic diagram of a partially enlarged structure of

[0052] Figure 27 is Figure 24 a sectional view taken along the D-D direction in

[0053] Figure 28 is Figure 27 a schematic diagram of an enlarged structure of region E of

[0054] The reference numerals are explained as follows: 1. Machine housing; 11. Door cover; 2. Drum assembly; 20. Washing cavity; 21. Outer drum; 22. Inner drum; 3. Feeding assembly; 31. Water inlet box; 310. Feeding cavity; 311. Water outlet part; 312. Water distribution plate; 313. Top cover; 314. Constant volume cavity; 3141. Overflow port; 3142. Leakage port; 315. Premixing water path; 3151. First outlet; 316. Venturi tube; 3161. Inlet part; 3162. Converging part; 3163. Diverging part; 3164. Negative pressure suction port; 3165. Negative pressure suction pipe; 317. Main water inlet path; 3171. Main water inlet; 3172. First branch; 3173. Second branch; 3174. Second outlet; 3175. Third branch; 318. Spraying cavity; 3181. Spraying port; 319. Liquid extraction path; 3191. Liquid extraction joint; 32. Soap box; 320. Liquid storage cavity; 3201. Liquid storage area; 3202. Filtering area; 3203. Diversion wall; 321. Filter element; 322. Installation position; 3221. Installation groove; 3222. Positioning card slot; 323. Lid; 3231. Liquid supplement port; 3232. Valve plug; 3233. Liquid supplement lid; 3234. Manual feeding port; 3235. Docking pipe; 324. Manual feeding groove; 325. Liquid extraction pipe; 3251. Step groove; 3252. First protrusion; 3253. First flow-through gap; 326. Volume reduction pipe; 3260. Flow reduction channel; 3261. Fixed rib; 3262. Step part; 3263. Second protrusion; 3264. Second flow-through gap; 33. Feeding pump; 331. Liquid extraction port; 332. Drainage port; 34. Feeding pipe; 35. Cleaning pipe; 36. Water inlet valve; 361. First valve port; 362. Second valve port; 37. Premixing water inlet pipe; 38. Main water inlet pipe. Detailed implementation manners

[0055] Typical embodiments embodying the features and advantages of the present utility model will be described in detail in the following description. It should be understood that the present utility model can have various variations in different embodiments, all of which do not depart from the scope of the present utility model, and the descriptions and illustrations therein are essentially for illustrative purposes and not for limiting the present utility model.

[0056] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be understood as a limitation to the present application.

[0057] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of the said features. In the description of the present application, "a plurality" means two or more, unless otherwise specifically defined.

[0058] In the description of the present application, it should be noted that unless otherwise clearly specified and defined, the terms "installed", "connected", "coupled" 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, an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0059] For the convenience of description, unless otherwise specified, the orientation expressions of up, down, left, right, front, and rear in this article are all referenced based on the state when the laundry treatment device is in use. The direction facing the user of the laundry treatment device is the front side direction, and the direction facing away from the user is the rear side direction; the vertical direction is the up and down direction, and the horizontal direction is the left and right direction.

[0060] The laundry treatment device provided by the embodiment of the present utility model can be a laundry treatment device such as a drum washing machine, a pulsator washing machine, a washing and drying integrated machine, etc. Taking the drum washing machine as an example below, the structural principle of the present solution will be described.

[0061] Figure 1 It is a schematic structural diagram of the laundry treatment device according to an embodiment of the present utility model.

[0062] Please refer to Figure 1 As shown, the laundry treatment device provided by an embodiment of the present utility model may include a housing 1. The housing 1 may be configured as an outer shell of the laundry treatment device. The housing 1 generally may adopt a cuboid hollow structure. It should be noted that in other embodiments, the appearance shape of the housing 1 may be designed as needed and is not limited herein. The interior of the housing 1 can be used to provide an installation space.

[0063] In some embodiments, a laundry inlet (not shown in the figure) may be formed on the front side wall of the housing 1. The laundry inlet may communicate with the interior space of the housing 1. Laundry can be put into the interior of the housing 1 through the laundry inlet for cleaning.

[0064] Please refer to Figures 1 to 2 As shown, in some embodiments, a door cover 11 may be provided on the front side wall of the housing 1. The door cover 11 can be used to open and close the laundry inlet on the front side wall of the housing 1, and thus the space inside the housing 1 can be opened and closed through the door cover 11.

[0065] It should be noted that in other embodiments, such as when the washing machine is a pulsator washing machine, the laundry inlet may be provided on the top side wall of the housing 1. At this time, the door cover 11 may be provided on the top side wall of the housing 1.

[0066] In some embodiments, the door cover 11 and the housing 1 may be connected by a hinge, and the door cover 11 can rotate around the axis of the hinge, thereby realizing the opening and closing of the door cover 11 and opening and closing the laundry inlet.

[0067] Figure 2 is Figure 1 a schematic diagram of the internal structure.

[0068] Please refer to Figures 1 to 2 As shown, the laundry treatment device may include a drum assembly 2. The drum assembly 2 may be disposed inside the housing 1. The drum assembly 2 may be arranged to extend in the front-rear direction of the housing 1. A washing cavity 20 may be formed inside the drum assembly 2. A drum opening may be formed on the front end face of the drum assembly 2. The drum opening communicates with the interior of the washing cavity 20. The drum opening is directly opposite to the laundry inlet and the door cover 11 of the housing 1. After the door cover 11 is opened, laundry can be sequentially put into the washing cavity 20 inside the drum assembly 2 through the laundry inlet on the front side of the housing 1 and the drum opening at the front end of the drum assembly 2 for operations such as laundry washing and laundry dehydration. When the housing 1 is closed, the housing 1 can simultaneously close the laundry inlet and the washing cavity 20.

[0069] It should be noted that in other embodiments, such as when the washing machine is a pulsator washing machine, the drum assembly 2 may be arranged to extend vertically in the up-down direction of the housing 1. The drum opening of the drum assembly 2 may be provided on the top end face of the drum assembly 2.

[0070] In some embodiments, the drum assembly 2 may include an outer drum 21. The outer drum 21 may be disposed inside the housing 1. The outer drum 21 may be configured as a tub for containing washing water. The inner space of the outer drum 21 can be used to hold washing liquids such as water, detergent, fabric softener, etc.

[0071] In some embodiments, the drum assembly 2 may include an inner drum 22. The inner drum 22 may be disposed inside the outer drum 21. A washing cavity 20 may be formed inside the inner drum 22. The washing cavity 20 inside the inner drum 22 is used to hold the clothes to be washed. Water passing holes (not labeled in the figure) may be provided on the peripheral wall of the inner drum 22. The washing cavity 20 can communicate with the space between the inner drum 22 and the outer drum 21 through the water passing holes. The washing liquid in the outer drum 21 can enter the washing cavity 20 inside the inner drum 22 through the water passing holes, that is, the washing liquid in the space between the inner drum 22 and the outer drum 21 can enter the washing cavity 20 inside the inner drum 22 through the water passing holes.

[0072] In some embodiments, the inner drum 22 may be rotatably disposed inside the outer drum 21. When the inner drum 22 rotates relative to the outer drum 21, the inner drum 22 can drive the clothes to rotate relative to the outer drum 21, and the washing function of the clothes in the washing cavity 20 of the inner drum 22 can be realized, improving the uniformity of clothes washing and clothes dehydration.

[0073] It should be noted that in other embodiments, the washing cavity 20 can also be used for drying clothes, such as a washing and drying integrated machine.

[0074] In some embodiments, the outer drum 21 and the inner drum 22 can also be arranged coaxially inside and outside. Oppositely arranged openings may be provided at the front ends of the outer drum 21 and the inner drum 22. The front end opening of the outer drum 21 and the front end opening of the inner drum 22 can be combined to form the drum opening of the drum assembly 2.

[0075] Please refer to Figure 2 As shown, in some embodiments, a driving device (not shown in the figure), such as a driving motor, may be provided inside the housing 1. The driving device may be disposed outside the outer drum 21. The driving device may be disposed inside the housing 1. The output end of the driving device may extend into the outer drum 21 and be in transmission connection with the inner drum 22. When the driving device can drive the inner drum 22 to rotate relative to the outer drum 21, the washing or dehydration function of the washing cavity 20 in the inner drum 22 can be realized. It should be noted that in some other embodiments, the output end of the driving device can also be in transmission connection with the inner drum 22 through a transmission device.

[0076] Figure 3 is Figure 2 a schematic structural view of the feeding assembly 3. Figure 4 is Figure 3 a schematic structural view from another perspective. Figure 5 is Figure 3 an exploded schematic view of

[0077] Please refer to Figures 3 to 5 As shown, in some embodiments, the laundry treatment device may include a dosing assembly 3. The dosing assembly 3 may be disposed inside the cabinet 1. The dosing assembly 3 may be disposed outside the drum assembly 2. The dosing assembly 3 may be used to dose laundry detergent and water. When laundry needs to be washed, the dosing assembly 3 may convey and dose the laundry detergent (such as detergent, fabric softener, etc.) into the washing chamber 20 through the water flow.

[0078] In some embodiments, the dosing assembly 3 may include a water inlet box 31. The water inlet box 31 may be disposed inside the cabinet 1. The dosing assembly 3 may be disposed outside the drum assembly 2. The water inlet box 31 may be a hollow housing structure. External water source may enter the water inlet box 31, and the water inlet box 31 may be communicated with the washing chamber 20 through a pipeline, so as to convey and dose water into the drum assembly 2 to supply water to the inside of the washing chamber 20.

[0079] Figure 6 Yes Figure 5 is a schematic structural view of the soap box 32 in it.

[0080] Please refer to Figures 3 to 6 As shown, in some embodiments, the dosing assembly 3 may include a soap box 32. The soap box 32 may be slidably disposed inside the water inlet box 31. The inside of the soap box 32 may be used to store laundry detergent. The laundry detergent in the soap box 32 may enter the water inlet box 31, and then be conveyed and dosed into the drum assembly 2 through the water flow in the water inlet box 31 to provide laundry detergent to the inside of the washing chamber 20.

[0081] In some embodiments, the soap box 32 may be exposed outside the cabinet 1. When the soap box 32 is pulled out of the water inlet box 31, the soap box 32 may be exposed outside the front side wall of the cabinet 1, so as to facilitate replenishing or dosing laundry detergent into the soap box 32.

[0082] Please refer to Figure 4 As shown, in some embodiments, the dosing assembly 3 may include a dosing pump 33. The dosing pump 33 may be used to extract the laundry detergent in the soap box 32, convey the extracted laundry detergent into the water inlet box 31, and convey and dose it into the drum assembly 2 through the water flow in the water inlet box 31.

[0083] In some embodiments, the dosing pump 33 may be disposed on the water inlet box 31. When the soap box 32 is pushed into the water inlet box 31, the dosing pump 33 may be communicated with the inside of the soap box 32, so that the dosing pump 33 can extract the laundry detergent in the soap box 32.

[0084] In some embodiments, the dosing pump 33 may be disposed on the rear wall of the water inlet box 31. It should be noted that in other embodiments, the dosing pump 33 may also be disposed on other side walls of the water inlet box 31, or may also be disposed inside the water inlet box 31.

[0085] Figure 7 Yes Figure 6 It is a schematic structural diagram in another state. Figure 8 Yes Figure 7 It is a schematic structural diagram of the interior.

[0086] Please refer to Figure 7 and Figure 8 As shown, in some embodiments, a liquid storage cavity 320 may be provided in the soap box 32. The liquid storage can be used to store laundry detergent. The dispensing pump 33 can extract the laundry detergent in the liquid storage cavity 320.

[0087] In some embodiments, two liquid storage cavities 320 may be provided in the soap box 32. The two liquid storage cavities 320 may be arranged separately from each other. One liquid storage cavity 320 can be used to store detergent. The other liquid storage cavity 320 can be used to store fabric softener.

[0088] It should be noted that, in some other embodiments, three or more liquid storage cavities 320 may also be provided. The number of liquid storage cavities 320 can be adjusted according to needs and is not limited herein.

[0089] Please refer to Figure 8 As shown, in some embodiments, a filter member 321 may be provided in the liquid storage cavity 320. The filter member 321 can be used to filter the liquid in the liquid storage cavity 320. The laundry detergent in the liquid storage cavity 320 can be filtered by the filter member 321 and then extracted by the dispensing pump 33. Therefore, the filtering function of the dispensed laundry detergent can be realized. It can effectively prevent the flocs in the laundry detergent from clogging the dispensing pump 33, avoid affecting the dispensing amount of the dispensing pump 33, and ensure the normal operation of the dispensing pump 33.

[0090] In some embodiments, the filter member 321 can divide the space of the liquid storage cavity 320 to form a liquid storage area 3201 and a filtering area 3202. The liquid storage area 3201 and the filtering area 3202 can be disposed on opposite sides of the filter member 321. The liquid in the liquid storage area 3201 can flow into the filtering area 3202 after being filtered by the filter member 321. The liquid in the liquid storage area 3201 is not filtered. The liquid inlet end of the dispensing pump 33 can communicate with the filtering area 3202. The liquid inlet end of the dispensing pump 33 can extract the liquid in the filtering area 3202. Therefore, the liquid in the filtering area 3202 can be filtered by the filter member 321 and then extracted by the dispensing pump 33. The laundry detergent in the soap box 32 can be filtered by the filter member 321 before being extracted by the dispensing pump 33, which can effectively prevent the dispensing pump 33 from being clogged.

[0091] Figure 9 Yes Figure 8 It is a partial exploded view.

[0092] Please refer to Figure 8 and Figure 9As shown, in some embodiments, the filter member 321 can be detachably disposed inside the soap box 32. The filter member 321 can be detachably disposed in the liquid storage chamber 320. The filter member 321 can be placed into the liquid storage chamber 320 or taken out from the liquid storage chamber 320, so as to facilitate cleaning or replacement of the filter member 321.

[0093] In some embodiments, the filter member 321 can be in a plate-like structure. The filter member 321 can be vertically arranged between the liquid storage area 3201 and the filtering area 3202, and can separate the liquid storage area 3201 and the filtering area 3202. The liquid storage area 3201 and the filtering area 3202 can be respectively disposed on opposite sides of the filter member 321.

[0094] In some embodiments, the filter member 321 can be a filter net. The filter net can be vertically arranged between the liquid storage area 3201 and the filtering area 3202.

[0095] In some embodiments, the liquid storage area 3201 can be arranged on the front side of the filter member 321. The filtering area 3202 can be arranged on the rear side of the filter member 321. When the soap box 32 is pushed into the inside of the water inlet box 31, the filtering area 3202 can be in butt communication with the dosing pump 33 on the back side of the water inlet box 31, so as to facilitate the liquid inlet end of the dosing pump 33 to draw the laundry detergent liquid in the filtering area 3202 nearby.

[0096] In some embodiments, the space of the filtering area 3202 is smaller than the space of the liquid storage area 3201, so as to prevent excessive accumulated filtered laundry detergent in the filtering area 3202.

[0097] In some embodiments, the space volume of the liquid storage area 3201 is larger, that is, the volume of the liquid storage chamber 320 can be larger. The volume of the liquid storage area 3201 in the liquid storage chamber 320 can be used to pre-store the laundry detergent consumption for multiple laundry programs. For example, the user can pre-store the laundry detergent consumption for several days or weeks or more in the liquid storage area 3201 of the liquid storage chamber 320, so as to reduce the number of times the user replenishes the liquid. When starting each laundry program, only the single laundry detergent consumption needs to be extracted by controlling the dosing pump 33. Therefore, the user does not need to manually supplement the laundry detergent into the soap box 32 before starting each laundry program, which is beneficial to improving the user experience.

[0098] Please refer to Figure 9 As shown, in some embodiments, an installation groove 3221 can be provided on the side wall of the liquid storage chamber 320. The installation groove 3221 can be arranged to extend vertically. The installation groove 3221 can be arranged to extend up and down. The side edge of the filter member 321 can be inserted into the installation groove 3221 downward from the upper port of the installation groove 3221, so as to vertically arrange the filter member 321 between the liquid storage area 3201 and the filtering area 3202.

[0099] In some embodiments, there may be two installation grooves 3221. The two installation grooves 3221 may be respectively provided on the opposite side walls of the liquid storage cavity 320. The opposite side edges of the filter element 321 may be respectively inserted downward from the upper ports of the installation grooves 3221 into an installation groove 3221, so that the filter element 321 can be detachably arranged between the liquid storage area 3201 and the filtering area 3202.

[0100] Please refer to Figure 9 As shown, in some embodiments, an installation position 322 may be formed between the liquid storage area 3201 and the filtering area 3202. The filter element 321 may be detachably arranged in the installation position 322. The installation position 322 may extend vertically so that the filter element 321 can be erected between the liquid storage area 3201 and the filtering area 3202.

[0101] In some embodiments, the two installation grooves 3221 may be respectively provided on the opposite side walls of the installation position 322. When the filter element 321 is arranged in the installation position 322, the opposite ends of the filter element 321 may be respectively inserted into an installation groove 3221, thereby fixing the filter element 321 in the installation position 322.

[0102] In some embodiments, a positioning card slot 3222 may be provided at the bottom of the installation position 322. When the filter element 321 is arranged in the installation position 322, the bottom end of the filter element 321 may be inserted into the positioning card slot 3222, thereby fixing the filter element 321 in the installation position 322.

[0103] Please refer to Figures 6 to 8 As shown, in some embodiments, the top of the soap box 32 may have a box cover 323. The box cover 323 may cover the top surface of the liquid storage cavity 320.

[0104] In some embodiments, the box cover 323 may be provided with a liquid replenishing port 3231. The liquid replenishing port 3231 may be located above the top of the liquid storage area 3201. When the soap box 32 is pulled out from the water inlet box 31, the user can replenish the laundry detergent into the liquid storage cavity 320 through the liquid replenishing port 3231. The laundry detergent may first enter the liquid storage area 3201 and then flow into the filtering area 3202 after being filtered by the filter element 321.

[0105] In some embodiments, the box cover 323 may be provided with two liquid replenishing ports 3231. The two liquid replenishing ports 3231 may be respectively located above the tops of the two liquid storage cavities 320. Therefore, the user can replenish the detergent into one liquid storage cavity 320 through one liquid replenishing port 3231 and replenish the fabric softener into the other liquid storage cavity 320 through the other liquid replenishing port 3231.

[0106] In some embodiments, a valve plug 3232 may be provided at the liquid replenishing port 3231. The valve plug 3232 may be detachably provided at the liquid replenishing port 3231. The valve plug 3232 may be used to seal and block the liquid replenishing port 3231. The valve plug 3232 may be removed from the liquid replenishing port 3231 by manually pulling it out. The valve plug 3232 may be plugged at the liquid replenishing port 3231 by manually inserting it.

[0107] In some embodiments, the box cover 323 may be provided with a liquid replenishing cover 3233. The liquid replenishing cover 3233 may be rotatably connected to the top surface of the box cover 323. The liquid replenishing cover 3233 may cover the top surfaces of the liquid replenishing port 3231 and the valve plug 3232, thereby sealing the liquid replenishing port 3231 and the valve plug 3232.

[0108] Please refer to Figures 6 to 8 As shown, in some embodiments, a manual feeding slot 324 may be provided in the soap box 32. The manual feeding slot 324 may be internally communicated with the water inlet box 31. The user may directly put laundry detergents, fabric softeners and other laundry liquids into the manual feeding slot 324, so that the laundry liquids can enter the interior of the water inlet box 31 along the manual feeding slot 324 and can be directly put into the washing cavity 20 in the drum assembly 2 through the water flow in the water inlet box 31.

[0109] Figure 10 is Figure 9 the front view of. Figure 11 is Figure 10 the sectional view taken along the line A-A in. Figure 12 is Figure 7 the structural schematic diagram of the box cover 323 in.

[0110] Please refer to Figures 10 to 12 As shown, in some embodiments, a manual feeding port 3234 may be formed in the box cover 323. The manual feeding port 3234 may be provided at the top of the manual feeding slot 324. The manual feeding port 3234 may be vertically and directly communicated with the manual feeding slot 324. When the soap box 32 is pulled out from the water inlet box 31, the user may directly put laundry liquid into the manual feeding slot 324 from the manual feeding port 3234.

[0111] In some embodiments, when the user uses washing powder for laundry, the user may put the washing powder into the manual feeding slot 324 through the manual feeding port 3234, and the washing powder in the manual feeding slot 324 may be flushed into the washing cavity 20 by the water flow in the water inlet box 31. In this scenario, the user may independently control the amount of washing powder used for each laundry.

[0112] In some embodiments, when a user does a single laundry, the user can also put the amount of laundry detergent for a single laundry into the manual dosing tank 324 through the manual dosing port 3234, and the laundry detergent in the manual dosing tank 324 is flushed into the washing cavity 20 by the water flow in the water inlet box 31. In this scenario, the user can independently control the amount of laundry detergent for a single laundry.

[0113] It should be noted that when the user replenishes the laundry detergent to the liquid storage cavity 320 through the replenishing port 3231, the user does not need to consider the amount of laundry detergent for a single laundry, but rather consider the total amount of laundry detergent needed to be replenished in the liquid storage cavity 320 for multiple laundries.

[0114] Please refer to Figure 8 and Figure 11 As shown, in some embodiments, the height of the bottom surface of the filtration area 3202 may not be higher than the height of the bottom surface of the liquid storage area 3201. That is, the height of the bottom surface of the filtration area 3202 may be lower than the height of the bottom surface of the liquid storage area 3201, or the height of the bottom surface of the filtration area 3202 may be equal to the height of the bottom surface of the liquid storage area 3201. Therefore, when the laundry detergent in the filtration area 3202 is pumped out, the laundry detergent in the liquid storage area 3201 can automatically flow to the filtration area 3202, and after being filtered by the filter element 321, it flows into the filtration area 3202.

[0115] In some embodiments, the height of the bottom surface of the end of the liquid storage area 3201 close to the filtration area 3202 may be lower than the height of the bottom surface of the end of the liquid storage area 3201 far from the filtration area 3202. Therefore, when the laundry detergent in the filtration area 3202 is pumped out, the laundry detergent in the liquid storage area 3201 can automatically move in the direction close to the filtration area 3202.

[0116] In some embodiments, a diversion wall 3203 may be provided on the bottom surface of the liquid storage area 3201. The diversion wall 3203 may be provided at the middle position of the liquid storage area 3201. In the direction from the liquid storage area 3201 towards the filtration area 3202, the diversion wall 3203 may be arranged to extend obliquely downward, so that the height of the bottom surface of the end of the liquid storage area 3201 far from the filtration area 3202 may be higher than the height of the bottom surface of the end of the liquid storage area 3201 close to the filtration area 3202, enabling the laundry detergent in the liquid storage area 3201 to automatically move in the direction close to the filtration area 3202.

[0117] In some embodiments, the entire bottom surface of the liquid storage area 3201 may be the diversion wall 3203. At this time, the entire bottom surface of the liquid storage area 3201 may be arranged to extend obliquely, enabling the laundry detergent in the liquid storage area 3201 to automatically move in the direction close to the filtration area 3202.

[0118] Please refer to Figure 11As shown, in some embodiments, the bottom surface height of the filtering area 3202 may be equal to the bottom surface height of one end of the liquid storage area 3201 close to the filtering area 3202. It should be noted that, in other embodiments, the bottom surface height of the filtering area 3202 may also be lower than the bottom surface height of one end of the liquid storage area 3201 close to the filtering area 3202.

[0119] Figure 13 is Figure 12 a partial enlarged structural schematic diagram of the middle liquid extraction pipe 325. Figure 14 is Figure 13 a disassembled structural schematic diagram of Figure 15 is Figure 10 a sectional view taken along the line B-B in Figure 16 is Figure 15 a partial enlarged structural schematic diagram of

[0120] Please refer to Figures 12 to 16 As shown, in some embodiments, a liquid extraction pipe 325 may be provided in the soap box 32. The liquid extraction pipe 325 may be arranged in the liquid storage cavity 320. The liquid extraction pipe 325 may be arranged in the filtering area 3202. The liquid extraction pipe 325 may be communicated with the liquid inlet end of the dosing pump 33. The dosing pump 33 may extract the laundry detergent in the filtering area 3202 of the liquid storage cavity 320 through the liquid extraction pipe 325.

[0121] In some embodiments, the liquid extraction pipe 325 may be arranged to extend vertically. The upper end inside the liquid extraction pipe 325 may be communicated with the liquid inlet end of the dosing pump 33. The lower end of the liquid extraction pipe 325 may be communicated with the bottom area of the liquid storage cavity 320. The lower end of the liquid extraction pipe 325 may be communicated with the bottom area of the filtering area 3202. Therefore, the dosing pump 33 may extract the clean laundry detergent in the filtering area 3202 through the liquid extraction pipe 325.

[0122] In some embodiments, the liquid extraction pipe 325 may be provided on the bottom surface of the box cover 323. The liquid extraction pipe 325 may extend downward from the bottom surface of the box cover 323. The box cover 323 may be detachably provided on the top of the soap box 32. When the box cover 323 is installed on the top of the soap box 32, the liquid extraction pipe 325 may extend downward from the bottom surface of the box cover 323 into the filtering area 3202, and the bottom end of the liquid extraction pipe 325 may be communicated with the bottom area of the filtering area 3202.

[0123] In some embodiments, the liquid extraction pipe 325 may be integrally formed with the box cover 323. The liquid extraction pipe 325 may be integrally formed on the bottom surface of the box cover 323. Furthermore, the liquid extraction pipe 325 and the box cover 323 may be integrally formed through an injection molding process to simplify the manufacturing and assembly difficulty of the liquid extraction pipe 325.

[0124] It should be noted that in other embodiments, the liquid extraction tube 325 can also be detachably connected to the box cover 323. The liquid extraction tube 325 can also be detachably arranged on the bottom surface of the box cover 323.

[0125] In other embodiments, the liquid extraction tube 325 can also be separately arranged from the box cover 323. The liquid extraction tube 325 can be separately arranged in the liquid storage cavity 320. The liquid extraction tube 325 can be detachably and separately arranged in the liquid storage cavity 320, or the liquid extraction tube 325 can also be integrally formed and fixed in the liquid storage cavity 320.

[0126] Please refer to Figure 6 and Figure 16 As shown, in some embodiments, a docking tube 3235 can be provided at the rear end of the box cover 323. The docking tube 3235 can extend towards the back side of the soap box 32. The upper end of the liquid extraction tube 325 can be communicated with the docking tube 3235. When the soap box 32 is pushed into the water inlet box 31, the docking tube 3235 can be docked and communicated with the liquid inlet end of the dosing pump 33, which is convenient for the liquid extraction tube 325 to be docked and communicated with the liquid inlet end of the dosing pump 33. Therefore, the liquid inlet end of the dosing pump 33 can extract the laundry detergent in the filtration area 3202 of the liquid storage cavity 320 through the docking tube 3235 and the liquid extraction tube 325, so that the laundry detergent passes through the inside of the liquid extraction tube 325 and the inside of the docking tube 3235 in sequence, and then enters the inside of the dosing pump 33.

[0127] Please refer to Figures 12 to 16 As shown, in some embodiments, a volume reduction tube 326 can be provided inside the liquid extraction tube 325. The volume reduction tube 326 can be detachably arranged inside the liquid extraction tube 325, so that the volume reduction tube 326 can be put into the liquid extraction tube 325 or taken out of the liquid extraction tube 325. The internal space of the existing liquid extraction tube 325 is relatively large. During use, especially during the first use, the extracted laundry detergent needs to preferentially fill the internal space of the liquid extraction tube 325. The volume reduction tube 326 can be filled in the internal space of the liquid extraction tube 325 to reduce the internal space of the liquid extraction tube 325 and reduce the occupancy of the internal space of the liquid extraction tube 325 by the laundry detergent.

[0128] It should be noted that in some related technologies, the internal space of the liquid extraction tube 325 is reduced by reducing the internal pipe diameter of the liquid extraction tube 325, but this solution is likely to block the liquid extraction tube 325 and it is difficult to accurately control the dosing flow rate and speed of the laundry detergent.

[0129] In some embodiments, a flow-reducing channel 3260 may be provided inside the flow-reducing tube 326. The upper end of the flow-reducing channel 3260 may communicate with the inside of the liquid suction tube 325. The lower end of the flow-reducing channel 3260 may communicate with the inside of the liquid storage cavity 320. Therefore, the liquid suction tube 325 can communicate with the bottom area of the liquid storage cavity 320 through the flow-reducing channel 3260, and the liquid inlet of the dosing pump 33 can extract the laundry detergent in the liquid storage cavity 320 through the liquid suction tube 325 and the flow-reducing channel 3260, and then the extracted laundry detergent can be dosed into the washing cavity 20.

[0130] When the dosing assembly 3 is in use, especially during the first use, filling the internal space of the liquid suction tube 325 with the flow-reducing tube 326 can reduce the occupation of the internal space of the liquid suction tube 325 by the laundry detergent, and thus can avoid affecting the dosing amount of the laundry detergent and reduce the dosing error of the laundry detergent.

[0131] It should be noted that the internal space of the existing liquid suction tube 325 is constant, and it is difficult to adjust and accurately control the liquid suction flow rate of the liquid suction tube 325. In some embodiments of the present application, flow-reducing tubes 326 of different models can be replaced inside the liquid suction tube 325. Flow-reducing tubes 326 of different models may have flow-reducing channels 3260 with different diameters. By replacing the flow-reducing tube 326 with a flow-reducing channel 3260 of a different diameter, the liquid suction speed of the dosing pump 33 can be changed and adjusted, facilitating accurate control of the liquid suction amount of the dosing pump 33, accurately controlling the dosing speed and dosing amount of the laundry detergent, and reducing the dosing error.

[0132] Please refer to Figure 16 As shown, in some embodiments, the liquid suction tube 325 may be arranged to extend vertically. The flow-reducing tube 326 is arranged to extend vertically. The vertical arrangement of the liquid suction tube 325 can facilitate the installation and arrangement of the liquid suction tube 325. The extending direction of the flow-reducing tube 326 may be the same as the extending direction of the liquid suction tube 325, so as to simplify the manufacturing and installation difficulty of the flow-reducing tube 326.

[0133] It should be noted that in some other embodiments, the liquid suction tube 325 may also be arranged obliquely. There may be an angle between the liquid suction tube 325 and the vertical direction. Correspondingly, the flow-reducing tube 326 may also be arranged obliquely. There may be an angle between the flow-reducing tube 326 and the vertical direction.

[0134] In some embodiments, the flow-reducing channel 3260 in the flow-reducing tube 326 may be arranged to extend along the axial direction of the flow-reducing tube 326, which can simplify the manufacturing process difficulty of the flow-reducing tube 326. It should be noted that in some other embodiments, the flow-reducing channel 3260 in the flow-reducing tube 326 may not extend along the axial direction of the flow-reducing tube 326, and the flow-reducing channel 3260 in the flow-reducing tube 326 may also be arranged in a curved or inclined manner.

[0135] Please refer toFigure 14 , Figure 16 As shown, in some embodiments, fixing ribs 3261 may protrude from the outer peripheral wall of the volume reduction tube 326. The fixing ribs 3261 may be arranged to extend vertically. The fixing ribs 3261 may be arranged to extend along the axial direction of the volume reduction tube 326.

[0136] When the volume reduction tube 326 is installed inside the liquid extraction tube 325, the outer side wall of the fixing rib 3261 can abut against the inner wall of the liquid extraction tube 325. By means of interference extrusion, the volume reduction tube 326 can be fixed inside the liquid extraction tube 325.

[0137] In some embodiments, in the direction from bottom to top, the distance between the outer side wall of the fixing rib 3261 and the outer peripheral wall of the volume reduction tube 326 may gradually decrease to zero. In the direction from bottom to top, the thickness of the fixing rib 3261 may gradually decrease to zero. Therefore, when the volume reduction tube 326 is installed inside the liquid extraction tube 325, there can be a zero gap between the outer peripheral wall at the top end of the volume reduction tube 326 and the inner wall of the liquid extraction tube 325, and the outer peripheral wall at the top end of the volume reduction tube 326 can closely adhere to the inner wall of the liquid extraction tube 325. When the liquid inlet end of the dosing pump 33 extracts liquid, the dosing pump 33 can only extract the laundry detergent in the liquid storage chamber 320 through the flow reduction channel 3260 inside the volume reduction tube 326.

[0138] In some embodiments, the fixing ribs 3261 may be arranged only in the lower region of the outer peripheral wall of the volume reduction tube 326. The fixing ribs 3261 are not arranged in the top region of the outer peripheral wall of the volume reduction tube 326, so as to ensure that the outer peripheral wall at the top end of the volume reduction tube 326 can closely adhere to the inner wall of the liquid extraction tube 325.

[0139] It should be noted that, in other embodiments, the fixing ribs 3261 may be arranged only in the middle region of the outer peripheral wall of the volume reduction tube 326.

[0140] Please refer to Figure 14 As shown, in some embodiments, there may be multiple fixing ribs 3261. The multiple fixing ribs 3261 may be arranged at circumferential intervals on the outer peripheral wall of the volume reduction tube 326. The multiple fixing ribs 3261 can improve the stability of the volume reduction tube 326 fixed inside the liquid extraction tube 325. It should be noted that the number, length, and thickness of the fixing ribs 3261 can be adjusted as needed and are not limited herein.

[0141] Please refer to Figures 12 to 16As shown, in some embodiments, a stepped groove 3251 may be recessed in the circumferential side at the bottom port of the liquid extraction tube 325. The stepped groove 3251 may have an annular structure. The stepped groove 3251 may be arranged around the circumferential side wall of the bottom port of the liquid extraction tube 325. A stepped portion 3262 may be protruded on the outer peripheral wall at the bottom end of the volume reduction tube 326. The stepped portion 3262 may have an annular structure. The stepped portion 3262 may be arranged around the outer peripheral wall at the bottom end of the volume reduction tube 326. When the volume reduction tube 326 needs to be placed inside the liquid extraction tube 325, the volume reduction tube 326 may be inserted into the liquid extraction tube 325 through the bottom port of the liquid extraction tube 325, and the stepped portion 3262 may be fitted into the stepped groove 3251, thereby fixing the volume reduction tube 326 inside the liquid extraction tube 325, preventing the volume reduction tube 326 from extending excessively into the liquid extraction tube 325, and preventing the volume reduction tube 326 from being unable to be taken out from inside the liquid extraction tube 325.

[0142] Please refer to Figures 12 to 16 As shown, in some embodiments, a first protrusion 3252 extending downward may be protruded on the circumferential side wall of the bottom port of the liquid extraction tube 325. The first protrusion 3252 may be used to abut against the bottom surface of the liquid storage cavity 320 to maintain a gap between the bottom port of the liquid extraction tube 325 and the bottom surface of the liquid storage cavity 320.

[0143] In some embodiments, a plurality of first protrusions 3252 extending downward may be protruded on the circumferential side wall of the bottom port of the liquid extraction tube 325. The plurality of first protrusions 3252 may be circumferentially spaced and arranged at the circumferential side edge of the bottom port of the liquid extraction tube 325. A first flow-through gap 3253 may be formed between two adjacent first protrusions 3252. When the distance between the first protrusion 3252 and the bottom surface of the liquid storage cavity 320 is small, or when the first protrusion 3252 abuts against the bottom surface of the liquid storage cavity 320, the bottom port of the liquid extraction tube 325 may extract the laundry detergent in the liquid storage cavity 320 through the first flow-through gap 3253.

[0144] It should be noted that the number and spacing of the first protrusions 3252 can be adjusted as needed and are not limited herein.

[0145] Please refer to Figures 12 to 16 As shown, in some embodiments, a second protrusion 3263 extending downward may be protruded on the circumferential side wall of the bottom port of the volume reduction tube 326. The second protrusion 3263 may protrude beyond the bottom port of the liquid extraction tube 325. The second protrusion 3263 may be used to abut against the bottom surface of the liquid storage cavity 320 to maintain a gap between the bottom port of the volume reduction tube 326 and the bottom surface of the liquid storage cavity 320.

[0146] In some embodiments, a plurality of second protruding portions 3263 extending downward may be protrudingly provided on the circumferential side wall of the bottom port of the volume reducing tube 326. The plurality of second protruding portions 3263 may be circumferentially spaced and arranged at the circumferential side edge of the bottom port of the volume reducing tube 326. A second flow-through gap 3264 may be formed between two adjacent second protruding portions 3263. When the distance between the second protruding portion 3263 and the bottom surface of the liquid storage chamber 320 is small, or when the second protruding portion 3263 abuts against the bottom surface of the liquid storage chamber 320, the liquid suction tube 325 may extract the laundry detergent in the liquid storage chamber 320 through the bottom port of the flow reduction channel 3260 and the second flow-through gap 3264.

[0147] It should be noted that the number and spacing of the second protruding portions 3263 can be adjusted as needed and are not limited herein.

[0148] Figure 17 Yes Figure 5 A schematic exploded view of a part of the water inlet box 31. Figure 18 Yes Figure 17 A partial structural schematic diagram of [the relevant part].

[0149] Please refer to Figures 3 to 5 , in combination with Figure 17 , Figure 18 As shown, in some embodiments, a placement cavity 310 may be provided in the water inlet box 31. An opening communicating with the placement cavity 310 may be provided at the front end of the water inlet box 31. The soap box 32 may be slidably disposed in the placement cavity 310 through the front end opening of the water inlet box 31.

[0150] In some embodiments, a water outlet portion 311 may be provided at the bottom of the water inlet box 31. A water outlet (not labeled in the figure) may be provided in the water outlet portion 311. The water outlet in the water outlet portion 311 may communicate with the washing cavity 20. The water or laundry detergent entering the placement cavity 310 may flow into the washing cavity 20 of the drum assembly 2 through the water outlet in the water outlet portion 311.

[0151] Please refer to Figure 17 , Figure 18 As shown, in some embodiments, the water inlet box 31 may include a water distribution plate 312. The water distribution plate 312 may be disposed above the top of the placement cavity 310. A water channel may be provided in the water inlet box 31. The water channel may be disposed in the water distribution plate 312. One end of the water channel may be connected to a water source. The other end of the water channel may be communicated with the washing cavity 20 in the drum assembly 2 through a pipeline. The other end of the water channel may also be communicated with the placement cavity 310, and the placement cavity 310 is then communicated with the washing cavity 20 in the drum assembly 2 through a pipeline.

[0152] In some embodiments, the water inlet box 31 may include a top cover 313. The top cover 313 may be disposed on the top surface of the water distribution plate 312. The water channel may be enclosed and formed between the top surface of the water distribution plate 312 and the bottom surface of the top cover 313.

[0153] Figure 19 is Figure 18 an exploded schematic view of. Figure 20 is Figure 19 a schematic structural view of the water distribution plate 312 in.

[0154] Please refer to Figures 18 to 20 As shown, in some embodiments, a constant volume chamber 314 may be provided in the water inlet box 31. The constant volume chamber 314 may be recessed in the top surface of the water distribution plate 312. The liquid outlet end of the dosing pump 33 may communicate with the constant volume chamber 314. The dosing pump 33 can pump the liquid in the liquid storage chamber 320 into the constant volume chamber 314. When the dosing pump 33 operates, the liquid inlet end of the dosing pump 33 can draw the laundry detergent in the liquid storage chamber 320 of the soap box 32, and convey the drawn laundry detergent to the constant volume chamber 314 through the liquid outlet end of the dosing pump 33.

[0155] Figure 21 is Figure 20 a schematic structural view from another perspective. Figure 22 is Figure 19 a schematic structural view of the top cover 313 in. Figure 23 is Figure 22 a schematic structural view from another perspective.

[0156] Please refer to Figures 20 to 22 As shown, in some embodiments, the constant volume chamber 314 may be enclosed and formed between the top surface of the water distribution plate 312 and the bottom surface of the top cover 313. The bottom region of the constant volume chamber 314 may be formed on the top surface of the water distribution plate 312. The top region of the constant volume chamber 314 may be formed on the bottom surface of the top cover 313.

[0157] Please refer to Figure 18 、 Figure 20 、 Figure 23 As shown, in some embodiments, a liquid pumping passage 319 may be provided in the water inlet box 31. The liquid pumping passage 319 may be recessed in the top surface of the water distribution plate 312. The liquid pumping passage 319 may be enclosed and formed between the top surface of the water distribution plate 312 and the bottom surface of the top cover 313. One end of the liquid pumping passage 319 is used to connect to the liquid inlet end of the dosing pump 33.

[0158] Figure 24 is Figure 4 a top view schematic diagram of. Figure 25 is Figure 24 a cross-sectional view taken along the C-C direction in. Figure 26 is Figure 25 a partial enlarged schematic structural view of.

[0159] Please refer to Figure 18 , Figure 20 , Figure 26 As shown, in some embodiments, the other end of the liquid extraction passage 319 may be provided with a liquid extraction connector 3191. The liquid extraction connector 3191 can be used to dock and communicate with the docking pipe 3235 of the soap box 32, so that the liquid inlet end of the dosing pump 33 can sequentially extract the laundry detergent in the liquid storage cavity 320 of the soap box 32 through the liquid extraction passage 319, the liquid extraction connector 3191, the docking pipe 3235, and the liquid extraction pipe 325.

[0160] Please refer to Figure 19 , Figure 20 As shown, in some embodiments, the liquid inlet end of the dosing pump 33 may be provided with a liquid extraction port 331. The liquid extraction port 331 can communicate with one end of the liquid extraction passage 319.

[0161] Please refer to Figure 19 , Figure 20 As shown, in some embodiments, the liquid outlet end of the dosing pump 33 may be provided with a liquid discharge port 332. The liquid discharge port 332 can communicate with the constant volume chamber 314.

[0162] Figure 27 is Figure 24 The sectional view taken along the D-D direction in Figure 28 is Figure 27 The enlarged structural schematic diagram of region E of

[0163] Please refer to Figure 4 , Figure 18 , Figure 20 , Figure 28 As shown, in some embodiments, the water passage in the water inlet box 31 may include a premixing water passage 315. One end of the premixing water passage 315 can be connected to a water source. The other end of the premixing water passage 315 can be used to communicate with the washing chamber 20. The premixing water passage 315 can be connected to the constant volume chamber 314 through a pipeline. When water enters the premixing water passage 315, the premixing water passage 315 can extract the laundry detergent in the constant volume chamber 314, mix it with the water in the premixing water passage 315, and then deliver it to the washing chamber 20 through the pipeline for dosing.

[0164] Please refer to Figure 18 , Figure 20 , Figure 23 As shown, in some embodiments, the premixing water passage 315 may be recessed on the top surface of the water distribution plate 312. At least part of the pipeline of the premixing water passage 315 may be enclosed between the bottom surface of the top cover 313 and the top surface of the water distribution plate 312.

[0165] Please refer to Figure 18 , Figure 20 , Figure 28As shown, in some embodiments, a Venturi tube 316 may be provided in the premixing water path 315. The Venturi tube 316 may be provided in the premixing water path 315. The Venturi tube 316 may be used to suck the laundry detergent and air in the constant volume chamber 314 into the premixing water path 315.

[0166] Please refer to Figure 28 As shown, in some embodiments, the Venturi tube 316 may have an inlet portion 3161. The inlet portion 3161 of the Venturi tube 316 may communicate with the water inlet end of the premixing water path 315. In the direction from the water inlet end of the premixing water path 315 towards the inlet portion 3161, the diameter of the inlet portion 3161 may gradually decrease. The diameter of the inlet portion 3161 may gradually decrease in the direction of the liquid flow.

[0167] Please refer to Figure 28 As shown, in some embodiments, the Venturi tube 316 may have a diffuser portion 3163. The diffuser portion 3163 may communicate with the water outlet end of the premixing water path 315. In the direction from the diffuser portion 3163 towards the water outlet end of the premixing water path 315, the diameter of the diffuser portion 3163 may gradually increase.

[0168] Please refer to Figure 28 As shown, in some embodiments, the Venturi tube 316 may have a constriction portion 3162. The constriction portion 3162 may be provided between the inlet portion 3161 and the diffuser portion 3163. The inlet portion 3161 may communicate with the diffuser portion 3163 through the constriction portion 3162. The diameter inside the constriction portion 3162 may be smaller than the diameter inside the inlet portion 3161. The diameter of the constriction portion 3162 may be smaller than the diameter inside the diffuser portion 3163. When water enters the premixing water path 315, the water flow may flow from the inlet portion 3161 to the constriction portion 3162, and then flow through the diffuser portion 3163 to the water outlet end of the premixing water path 315.

[0169] Please refer to Figure 28 As shown, in some embodiments, the Venturi tube 316 may have a negative pressure suction port 3164. One end of the negative pressure suction port 3164 may communicate with the constriction portion 3162. The other end of the negative pressure suction port 3164 may extend into the constant volume chamber 314 and communicate with the inside of the constant volume chamber 314. When water enters the premixing water path 315 and the water flow passes through the constriction portion 3162, a negative pressure may be formed in the negative pressure suction port 3164, enabling the negative pressure suction port 3164 to suck the laundry detergent and air in the constant volume chamber 314 into the constriction portion 3162, that is, into the premixing water path 315, so that the laundry detergent and air are mixed with the water in the premixing water path 315 to form a foam liquid, and then the foam liquid is delivered to the washing chamber 20 through a pipeline. Thereby, the mixing degree of the delivered laundry detergent and water can be improved, which is beneficial to enhancing the laundry effect of the delivered laundry detergent and the washing ratio of the laundry treatment device.

[0170] It should be noted that in some embodiments, the water inlet speed of the premixing water path 315 is relatively large, which can form a relatively large suction force at the negative pressure suction port 3164, and can quickly draw out the laundry detergent in the constant volume chamber 314 into the premixing water path 315. Furthermore, the air in the constant volume chamber 314 can also enter the premixing water path 315 from the negative pressure suction port 3164, enabling the laundry liquid, air, and water to be fully mixed to form a foam liquid.

[0171] In some embodiments, the water inlet speed of the premixing water path 315 is relatively large and can be much greater than the speed at which the dosing pump 33 injects the laundry detergent into the constant volume chamber 314. The water inlet speed of the premixing water path 315 can be more than 100 times the speed at which the dosing pump 33 injects the laundry detergent into the constant volume chamber 314. The relatively large water inlet speed of the premixing water path 315 can form sufficient suction force at the negative pressure suction port 3164, enabling the laundry detergent in the constant volume chamber 314 to be quickly sucked into the interior of the premixing water path 315 by the negative pressure suction port 3164, and enabling the air in the constant volume chamber 314 to also enter the premixing water path 315 from the negative pressure suction port 3164.

[0172] It should be noted that in some embodiments, the laundry detergent in the constant volume chamber 314 can have a certain viscosity. When the suction speed at the negative pressure suction port 3164 is greater than the preset speed, the laundry detergent in the space where the lower port of the negative pressure suction port 3164 in the constant volume chamber 314 is located can be quickly emptied. Before the nearby laundry detergent fills this area, the air in the constant volume chamber 314 can be sucked into the premixing water path 315 through the negative pressure suction port 3164, enabling the laundry detergent, air, and water to be fully mixed inside the premixing water path 315 to form a foam liquid.

[0173] In some embodiments, the diameter of the negative pressure suction port 3164 can be greater than 0.8 times the diameter of the contraction part 3162 and less than the diameter of the contraction part 3162.

[0174] When water enters the premixing water path 315, the diameter of the negative pressure suction port 3164 being greater than 0.8 times the diameter of the contraction part 3162 can enable the negative pressure suction port 3164 to have sufficient diameter width, which can increase the suction speed of the liquid in the constant volume chamber 314, enabling both the liquid and air in the constant volume chamber 314 to enter the premixing water path 315 through the negative pressure suction port 3164.

[0175] It should be noted that in some other embodiments, the diameter of the negative pressure suction port 3164 can also be equal to 0.8 times the diameter of the contraction part 3162. In some other embodiments, the diameter of the negative pressure suction port 3164 can also be equal to the diameter of the contraction part 3162. According to the ratio relationship between the diameter of the negative pressure suction port 3164 and the diameter of the contraction part 3162, it is convenient to mold the corresponding type of Venturi tube.

[0176] In some embodiments, the diameter of the negative pressure suction port 3164 can be greater than the diameter of the contraction part 3162 and less than 1.2 times the diameter of the contraction part 3162. When the pre-mixed water path 315 is filled with water, the diameter of the negative pressure suction port 3164 being less than 1.2 times the diameter of the contraction part 3162 can ensure that the negative pressure suction port 3164 has sufficient suction force on the liquid in the constant volume chamber 314, enabling both the liquid and air in the constant volume chamber 314 to enter the pre-mixed water path 315 through the negative pressure suction port 3164.

[0177] It should be noted that in some other embodiments, the diameter of the negative pressure suction port 3164 can also be equal to 1.2 times the diameter of the contraction part 3162.

[0178] In some embodiments, the diameter of the negative pressure suction port 3164 can preferably be any one of 0.9 times, 0.95 times, 1 time, 1.05 times, or 1.1 times the diameter of the contraction part 3162, so as to facilitate the formation of Venturi tubes of corresponding models according to the preset diameter.

[0179] In some embodiments, the cross-section of the negative pressure suction port 3164 can be a circular hole structure. In other embodiments, the cross-section of the negative pressure suction port 3164 can also be a hole structure with a rectangular shape or other shapes.

[0180] It should be noted that when the negative pressure suction port 3164 is a non-circular structure, the caliber size of the negative pressure suction port 3164 can be determined according to the cross-sectional area of the negative pressure suction port 3164. That is, the cross-sectional area of the negative pressure suction port 3164 can preferably be any one of 0.9 times, 0.95 times, 1.05 times, or 1.1 times the diameter of the contraction part 3162.

[0181] In some embodiments, the Venturi tube 316 can be disposed above the constant volume chamber 314. The negative pressure suction port 3164 of the Venturi tube 316 can extend downward and be arranged inside the constant volume chamber 314. The negative pressure suction port 3164 can be a channel structure extending vertically. The lower end of the negative pressure suction port 3164 can communicate with the bottom area of the constant volume chamber 314.

[0182] Please refer to Figure 22 、 Figure 23 and Figure 28As shown, in some embodiments, the venturi tube 316 may protrude from the bottom surface of the top cover 313. The venturi tube 316 may have a negative pressure suction tube 3165 extending downward. The negative pressure suction port 3164 may be formed within the negative pressure suction tube 3165. The negative pressure suction tube 3165 may be arranged to extend along the axial direction of the negative pressure suction tube 3165. When the top cover 313 is placed on the top surface of the water distribution plate 312, the negative pressure suction tube 3165 of the venturi tube 316 may extend downward into the constant volume chamber 314, such that the lower end of the negative pressure suction tube 3165 may be arranged in the bottom region of the constant volume chamber 314, and the lower end of the negative pressure suction port 3164 may communicate with the bottom region of the constant volume chamber 314.

[0183] Please refer to Figure 17 、 Figure 18 、 Figure 20 As shown, in some embodiments, the water passage in the water inlet box 31 may include a main water inlet passage 317. The main water inlet passage 317 may have a main water inlet 3171. The main water inlet 3171 may be used to connect to a water source. The main water inlet passage 317 may include a first branch 3172. One end of the first branch 3172 may communicate with the main water inlet 3171. The other end of the first branch 3172 may communicate with the constant volume chamber 314. After the step of discharging the laundry detergent in the constant volume chamber 314 into the washing chamber 20 along with the water flow in the pre-mixing water passage 315 is completed, the main water inlet passage 317 may supply water to the constant volume chamber 314 through the first branch 3172 to clean the residual laundry detergent in the constant volume chamber 314.

[0184] In some embodiments, the main water inlet passage 317 may be recessed in the top surface of the water distribution plate 312. The main water inlet passage 317 may be enclosed between the bottom surface of the top cover 313 and the top surface of the water distribution plate 312.

[0185] Please refer to Figure 17 、 Figure 18 、 Figure 20 As shown, in some embodiments, an overflow port 3141 may be provided on the side wall of the constant volume chamber 314. The overflow port 3141 may communicate the constant volume chamber 314 and the dispensing chamber 310. When the liquid in the constant volume chamber 314 reaches a preset height, the liquid in the constant volume chamber 314 can flow into the dispensing chamber 310 through the overflow port 3141, and then flow into the washing chamber 20 in the drum assembly 2 through the water outlet 311 at the bottom of the dispensing chamber 310. It should be noted that the air in the dispensing chamber 310 can enter the constant volume chamber 314, such that there can be a certain amount of air in the constant volume chamber 314.

[0186] In some embodiments, the height between the liquid overflow port 3141 and the bottom surface of the constant volume chamber 314 may be a preset height. When the liquid in the constant volume chamber 314 reaches the preset height, the liquid level height in the constant volume chamber 314 reaches the liquid overflow port 3141, and the liquid volume in the constant volume chamber 314 is the preset volume.

[0187] Please refer to Figure 17 , Figure 18 , Figure 20 As shown, in some embodiments, when the main water inlet channel 317 supplies water to the constant volume chamber 314 through the first branch 3172, the mixed liquid after the water flow washes the residual laundry detergent in the constant volume chamber 314 can flow through the liquid overflow port 3141 into the dosing chamber 310, and then flow into the washing chamber 20 in the drum assembly 2 through the water outlet part 311 at the bottom of the dosing chamber 310.

[0188] In some embodiments, the port where the first branch 3172 communicates with the constant volume chamber 314 may be arranged on the top side wall of the constant volume chamber 314, so as to facilitate cleaning the residual laundry detergent on the inner side wall of the constant volume chamber 314.

[0189] In some embodiments, the position height of the port where the first branch 3172 communicates with the constant volume chamber 314 may be higher than the position height of the liquid overflow port 3141, so that the liquid in the constant volume chamber 314 can smoothly drain from the liquid overflow port 3141, preventing the liquid from flowing back into the first branch 3172 and the main water inlet channel 317.

[0190] Please refer to Figure 17 , Figure 18 As shown, in some embodiments, a water leakage port 3142 may be provided on the bottom surface of the constant volume chamber 314. The water leakage port 3142 may communicate with the dosing chamber 310. When the first branch 3172 supplies water to the constant volume chamber 314, the water for cleaning the residual laundry detergent in the constant volume chamber 314 can enter the dosing chamber 310 through the water leakage port 3142.

[0191] In some embodiments, the diameter of the water leakage port 3142 may be less than or equal to a preset diameter. When the laundry detergent in the liquid storage chamber 320 enters the constant volume chamber 314, due to the viscosity of the laundry detergent, the laundry detergent in the constant volume chamber 314 cannot enter the dosing chamber 310 through the water leakage port 3142.

[0192] It should be noted that when the constant volume chamber 314 is cleaned by supplying water through the first branch 3172, most of the mixed liquid for cleaning the residual laundry detergent in the constant volume chamber 314 flows into the dosing chamber 310 through the liquid overflow port 3141. Only at the end of the cleaning process or after the cleaning water supply is completed, when most of the liquid components in the constant volume chamber 314 are water, the liquid in the constant volume chamber 314 can enter the dosing chamber 310 through the water leakage port 3142.

[0193] Please refer toFigure 17 , Figure 18 , Figure 20 , and in combination with Figures 3 to 5 As shown, in some embodiments, a first outlet 3151 may be formed at the water outlet end of the premixing water path 315. The dosing assembly 3 may include a dosing tube 34. The dosing tube 34 may be disposed outside the water inlet box 31. One end of the dosing tube 34 may communicate with the first outlet 3151. The other end of the dosing tube 34 may communicate with the washing chamber 20. The mixed liquid formed in the premixing water path 315 can be delivered through the dosing tube 34 into the washing chamber 20 of the drum assembly 2.

[0194] In some embodiments, the main water inlet path 317 may include a second branch 3173. One end of the second branch 3173 may communicate with the main water inlet 3171. The other end of the second branch 3173 may form a second outlet 3174. The dosing assembly 3 may include a cleaning tube 35. The cleaning tube 35 may be disposed outside the water inlet box 31. One end of the cleaning tube 35 may communicate with the second outlet 3174. The other end of the cleaning tube 35 may communicate with the washing chamber 20. The main water inlet path 317 can clean a partial area in the washing chamber 20 of the drum assembly 2 through the second branch 3173 and the cleaning tube 35. It should be noted that the main water inlet path 317 can supply water to the washing chamber 20 of the drum assembly 2 through the second branch 3173 and the cleaning tube 35.

[0195] In some embodiments, the cleaning area of the cleaning tube 35 in the washing chamber 20 and the dosing area of the dosing tube 34 in the washing chamber 20 may at least partially overlap. In the washing chamber 20, the cleaning area of the cleaning tube 35 and the dosing area of the dosing tube 34 may mostly overlap, so as to flush the residual laundry detergent on the inner wall of the washing chamber 20 through the second branch 3173 and the cleaning tube 35, which is beneficial to improving the laundry efficiency and reducing the residual laundry detergent on the inner wall of the washing chamber 20.

[0196] Please refer to Figure 17 , Figure 18 , Figure 20 As shown, in some embodiments, a spray chamber 318 may be provided in the water inlet box 31. The spray chamber 318 may be disposed on the top surface of the water distribution plate 312. The spray chamber 318 may be enclosed between the top surface of the water distribution plate 312 and the bottom surface of the top cover 313. The spray chamber 318 may be arranged above the top of the manual dosing slot 324. A plurality of spray nozzles 3181 may be provided on the bottom surface of the spray chamber 318. The plurality of spray nozzles 3181 may be arranged at intervals on the bottom surface of the spray chamber 318. The spray nozzles 3181 may communicate with the manual dosing slot 324.

[0197] When water is supplied from a water source to the spray chamber 318, the water in the spray chamber 318 can be sprayed downward through a plurality of spray openings 3181 onto the manual dosing tank 324 to wash the washing powder or liquid detergent in the manual dosing tank 324. The washing powder or liquid detergent is washed into the dosing chamber 310 by the water flow and then is discharged into the washing chamber 20 in the drum assembly 2 through the drainage part at the bottom of the dosing chamber 310 by the water flow.

[0198] It should be noted that in other embodiments, the spray chamber 318 can also supply water directly to the washing chamber 20 in the drum assembly 2 through the spray openings 3181, the manual dosing tank 324, and the dosing chamber 310.

[0199] Please refer to Figure 17 、 Figure 18 、 Figure 20 As shown, in some embodiments, the main water inlet path 317 can include a third branch 3175. One end of the third branch 3175 can communicate with the main water inlet 3171. The other end of the third branch 3175 can communicate with the spray chamber 318. The main water inlet path 317 can supply water to the spray chamber 318 through the third branch 3175, and thus can supply water to the washing chamber 20 of the drum assembly 2, or can convey the washing powder or liquid detergent in the manual dosing tank 324 to the washing chamber 20.

[0200] Please refer to Figure 3 、 Figure 24 As shown, in some embodiments, the dosing assembly 3 can include a water inlet valve 36. The water inlet valve 36 can have a first valve port 361. The first valve port 361 can be connected to the water inlet end of the premixing water path 315 through a premixing water inlet pipe 37. One end of the premixing water inlet pipe 37 can communicate with the first valve port 361 of the water inlet valve 36. The other end of the premixing water inlet pipe 37 can communicate with the water inlet end of the premixing water path 315. Therefore, water can be separately supplied to the premixing water path 315 through the first valve port 361 of the water inlet valve 36 and the premixing water inlet pipe 37.

[0201] In some embodiments, a venturi tube 316 can be provided at the water inlet end of the premixing water path 315. The inlet portion 3161 of the venturi tube 316 can serve as the water inlet end of the premixing water path 315. The end of the premixing water inlet pipe 37 remote from the first valve port 361 can communicate with the inlet portion 3161 of the venturi tube 316. The end of the premixing water inlet pipe 37 remote from the first valve port 361 can be sleeved on the inlet portion 3161 of the venturi tube 316 so that the premixing water inlet pipe 37 can directly supply water into the interior of the venturi tube 316.

[0202] Please refer to Figure 3 、 Figure 24As shown, in some embodiments, the water inlet valve 36 may have a second valve port 362. The second valve port 362 may be connected to the main water inlet 3171 through the main water inlet pipe 38. One end of the main water inlet pipe 38 may communicate with the second valve port 362 of the water inlet valve 36. The other end of the main water inlet pipe 38 may communicate with the main water inlet 3171. Therefore, water can be supplied to the main water inlet 3171 and the main water inlet waterway 317 through the second valve port 362 of the water inlet valve 36 and the main water inlet pipe 38.

[0203] It should be noted that, in some embodiments, when the water inlet valve 36 supplies water to the main water inlet waterway 317 through the main water inlet pipe 38, the main water inlet 3171 may supply water to the first branch 3172, the second branch 3173, and the third branch 3175 simultaneously, so that water can flow into the washing cavity 20 in the drum assembly 2 from different water flows simultaneously.

[0204] Although the present invention has been described with reference to several exemplary embodiments, it should be understood that the terms used are illustrative and exemplary, rather than restrictive. Since the present invention can be embodied in many forms without departing from the spirit or essence of the invention, it should be understood that the above-described embodiments are not limited to any of the foregoing details, but should be construed broadly within the spirit and scope defined by the appended claims. Therefore, all changes and modifications falling within the scope of the claims or their equivalents should be covered by the appended claims.

Claims

1. A clothing treatment device, characterized in that, Comprising: A casing configured as an outer shell of the laundry treatment device; A drum assembly disposed within the casing, with a washing cavity formed therein; A dosing assembly including a water inlet box, a soap box, and a dosing pump; the water inlet box is disposed within the casing; the soap box is slidably disposed inside the water inlet box, and a liquid storage cavity is provided within the soap box; Wherein, a constant volume cavity is provided within the water inlet box, and the dosing pump is capable of pumping the liquid in the liquid storage cavity into the constant volume cavity; A premixing water path is provided within the water inlet box, one end of the premixing water path is for connecting to a water source, and the other end of the premixing water path is for communicating with the washing cavity; A Venturi tube is provided within the premixing water path, the Venturi tube is disposed within the premixing water path, and the negative pressure suction port of the Venturi tube extends into the constant volume cavity; When water enters the premixing water path, the negative pressure suction port of the Venturi tube can suck the liquid and air in the constant volume cavity into the premixing water path, mix with the water in the premixing water path, and then be dispensed into the washing cavity.

2. The laundry treating apparatus according to claim 1, wherein, The Venturi tube is disposed above the constant volume cavity, and the negative pressure suction port of the Venturi tube extends downward into the constant volume cavity.

3. The laundry treating apparatus according to claim 1, wherein, The water inlet box includes a water distribution plate and a top cover covering above the water distribution plate; The constant volume cavity is recessed on the top surface of the water distribution plate, and the constant volume cavity is enclosed between the bottom surface of the top cover and the top surface of the water distribution plate.

4. The laundry treating apparatus according to claim 3, wherein, The Venturi tube protrudes from the bottom surface of the top cover, the Venturi tube has a negative pressure suction tube extending downward, and the negative pressure suction port is formed within the negative pressure suction tube; When the top cover covers the top surface of the water distribution plate, the negative pressure suction tube of the Venturi tube extends downward into the constant volume cavity.

5. The laundry treating apparatus according to claim 4, wherein The premixing water path is recessed on the top surface of the water distribution plate, and at least part of the water path of the premixing water path is enclosed between the bottom surface of the top cover and the top surface of the water distribution plate.

6. The laundry treating apparatus according to claim 1, wherein, A dosing cavity is provided within the water inlet box, the soap box is slidably disposed inside the dosing cavity, a water outlet portion is provided at the bottom of the dosing cavity, and the water outlet portion communicates with the washing cavity; An overflow port is provided on the side wall of the constant volume cavity, and the overflow port communicates with the dosing cavity; When the liquid in the constant volume cavity reaches a preset height, the liquid in the constant volume cavity can flow through the overflow port to the dosing cavity, and then flow into the washing cavity through the water outlet portion.

7. The laundry treating apparatus according to claim 6, wherein, A main water inlet path is provided within the water inlet box, the main water inlet path has a main water inlet, and the main water inlet is for communicating with a water source; The main water inlet path includes a first branch, one end of the first branch is communicated with the main water inlet, and the other end of the first branch is communicated with the constant volume cavity; The main water inlet path can supply water to the constant volume cavity through the first branch.

8. The laundry treating apparatus according to claim 7, wherein, A water leakage port is provided on the bottom surface of the constant volume cavity, the water leakage port communicates with the dosing cavity, and the diameter of the water leakage port is less than or equal to a preset diameter; When the laundry detergent in the liquid storage cavity enters the constant volume cavity, the laundry detergent in the constant volume cavity cannot enter the dosing cavity through the water leakage port; When the first branch supplies water to the constant volume chamber, the water in the constant volume chamber can enter the dosing chamber through the water leakage port.

9. The laundry treating apparatus according to claim 7, wherein, A first outlet is formed at the water outlet end of the premixing water path. The dosing assembly includes a dosing pipe. One end of the dosing pipe is communicated with the first outlet, and the other end of the dosing pipe is communicated with the washing chamber. The liquid in the premixing water path can be dosed into the washing chamber through the dosing pipe.

10. The laundry treatment apparatus according to claim 9, wherein, The main water inlet path includes a second branch. One end of the second branch is communicated with the main water inlet, and the other end of the second branch forms a second outlet. The dosing assembly includes a cleaning pipe. One end of the cleaning pipe is communicated with the second outlet, and the other end of the cleaning pipe is communicated with the washing chamber. The main water inlet path can clean a partial area in the washing chamber through the second branch and the cleaning pipe.

11. The laundry treating apparatus according to claim 10, wherein, The cleaning area of the cleaning pipe in the washing chamber at least partially overlaps with the dosing area of the dosing pipe in the washing chamber.

12. The laundry treating apparatus according to claim 7, wherein, The dosing assembly includes a water inlet valve which has a first valve port and a second valve port. The first valve port is connected to the water inlet end of the premixing water path through a premixing water inlet pipe, and the second valve port is connected to the main water inlet through a main water inlet pipe.

13. The laundry treatment apparatus according to claim 2, wherein The venturi tube includes an inlet part, a contraction part and a diffusion part which are connected in sequence. The inlet part is the water inlet end of the premixing water path. The diameter of the inlet part gradually decreases in the liquid flow direction, and the diameter of the diffusion part gradually increases in the liquid flow direction. One end of the negative pressure suction port is communicated with the contraction part, and the other end of the negative pressure suction port extends and is arranged in the constant volume chamber and is communicated with the constant volume chamber.

14. The laundry treating apparatus according to claim 13, wherein, The diameter of the negative pressure suction port is 0.8 to 1.2 times the diameter of the contraction part.

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