Detergent putting device, detergent box and household appliance

Abstract

The utility model relates to the technical field of household appliances, in particular to a detergent putting device, a detergent box and a household appliance. The detergent feeding device comprises a body, a piston and a reset part, the body is provided with a containing cavity, a water inlet port and a liquid discharging port are formed in the two ends of the body, a liquid supplementing port is formed in the side wall of the body, and the piston moves between a first position and a second position in the containing cavity so that the liquid supplementing port can be communicated with the liquid discharging cavity or blocked by the piston; when the liquid supplementing port is communicated with the liquid discharging cavity and the liquid discharging cavity is not completely filled with the detergent, the detergent stored in the liquid storage box enters the liquid discharging cavity through the liquid supplementing port; when the liquid supplementing port is blocked by the piston and the volume of the liquid discharging cavity is reduced, the detergent flows out of the liquid discharging cavity through the liquid discharging port, so that the detergent is put in; the liquid storage box is higher than the body; according to the technical scheme, driving is achieved through water pressure, the putting amount is controlled through the cavity volume, full-automatic putting can be achieved without depending on an electric pump, the structure is simple, energy consumption is low, and maintenance is easy.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of washing machines, in particular to a detergent dispensing device, a detergent box and a household appliance. BACKGROUND

[0002] Household appliances often need to use detergents. With the development of science and technology, users have increasingly high requirements for the intelligence of household appliances. For example, users hope that detergents can be intelligently dispensed when the household appliances are running, and manual dispensing of detergents is not needed each time. The detergent intelligent dispensing device in the prior art needs to use electric elements such as detergent dispensing pumps and electromagnetic valves, and the cost of components is high, and the required energy consumption is high. CONTENT OF THE UTILITY MODEL

[0003] The present disclosure aims to at least solve one of the technical problems existing in the prior art or related art.

[0004] To this end, the present disclosure provides a detergent dispensing device in a first aspect, comprising a body, a piston and a reset member, the body has a containing chamber, the containing chamber is provided with a water inlet port and a liquid outlet port, at least one liquid supplement port is arranged on the side wall of the containing chamber, and the piston and the reset member are arranged in the containing chamber, wherein,

[0005] The containing chamber has a water inlet end and a liquid outlet end, the piston and the water inlet end define a water inlet chamber, and the piston and the liquid outlet end define a liquid outlet chamber; the water inlet port is arranged on one side of the water inlet end, the water inlet port is in communication with the water inlet chamber and is isolated from the liquid outlet chamber; the liquid outlet port is arranged on one side of the liquid outlet end, the liquid outlet port is in communication with the liquid outlet chamber and is isolated from the water inlet chamber;

[0006] The piston moves between a first position and a second position in the containing chamber to make the liquid supplement port communicate with or be blocked by the piston and the liquid outlet chamber, and the volume of the water inlet chamber and the liquid outlet chamber changes;

[0007] When the liquid supplement port communicates with the liquid outlet chamber and the liquid outlet chamber is not completely filled with detergent, the detergent stored in the liquid storage box enters the liquid outlet chamber through the liquid supplement port; when the liquid supplement port is blocked by the piston and the volume of the liquid outlet chamber decreases, the detergent flows out of the liquid outlet chamber through the liquid outlet port to realize the dispensing of the detergent;

[0008] The reset member and the water pressure of the water inlet port provide the reciprocating force of the piston, and the liquid storage box is higher than the body.

[0009] In an implementation, the side wall of the accommodating chamber is further provided with a water outlet port; the piston reciprocates between the first position and the second position in the accommodating chamber to make the water outlet port communicate with or be blocked by the piston; the liquid discharge port and the water outlet port both communicate with the mixing box; the detergent flows out of the liquid discharge chamber via the liquid discharge port and enters the mixing box; when the water outlet port communicates with the water inlet chamber, the water in the water inlet chamber flows out of the water inlet chamber via the water outlet port and enters the mixing box.

[0010] In an implementation, the piston has a piston front end and a piston rear end.

[0011] When the piston is located at the second position, the liquid supplement port communicates with the liquid discharge chamber, and the distance between the liquid supplement port and the piston front end is less than the first distance threshold; and / or when the piston is located at the first position, the water outlet port communicates with the water inlet chamber, and the distance between the water outlet port and the piston rear end is less than the second distance threshold.

[0012] In an implementation, the detergent dispensing device comprises at least one of the following:

[0013] The side wall of the accommodating chamber is further provided with a pressure relief port, the pressure relief port and the mixing box communicate, and the piston reciprocates between the first position and the second position in the accommodating chamber to make the pressure relief port communicate with or be blocked by the piston; the difference between the distance between the pressure relief port and the liquid discharge port and the distance between the liquid supplement port and the liquid discharge port is less than a third distance threshold;

[0014] The water inlet port is provided upstream of a water inlet valve, and the detergent dispensing device further comprises a backwater port provided between the water inlet port and the water inlet valve, the backwater port and the mixing box communicate; when the water inlet valve is closed and the water inlet chamber is reduced, the water in the water inlet chamber flows out of the water inlet chamber via the backwater port and enters the mixing box;

[0015] The side wall of the accommodating chamber is further provided with a cleaning port, and the piston reciprocates between the first position and the second position in the accommodating chamber to make the cleaning port communicate with or be blocked by the piston; the distance between the cleaning port and the liquid discharge port is less than the distance between the liquid supplement port and the liquid discharge port.

[0016] In an implementation, the detergent dispensing device further comprises a pipeline assembly, the pipeline assembly comprises a liquid supplement pipe that communicates the liquid supplement port and the mixing box, and a water outlet pipe that communicates the water outlet port and the mixing box.

[0017] In an implementation, the pipeline assembly comprises at least one of the following:

[0018] The pressure relief pipe is connected with the mixing box.

[0019] The backwater pipe is connected with the water outlet pipe.

[0020] The cleaning pipe is connected with the cleaning port.

[0021] The water inlet pipe is arranged between the water inlet port and the water inlet valve.

[0022] In an embodiment, the pipeline assembly satisfies at least one of the following conditions:

[0023] The diameter of the backwater pipe is smaller than that of the water outlet pipe.

[0024] The diameter of the liquid supplement pipe is larger than that of the water outlet pipe.

[0025] The end of the pressure relief pipe connected with the mixing box is higher than the end of the water outlet pipe connected with the mixing box.

[0026] The end of the pressure relief pipe connected with the mixing box is higher than the end of the liquid discharge pipe connected with the mixing box.

[0027] The end of the pressure relief pipe connected with the mixing box is higher than the end of the liquid supplement pipe connected with the mixing box.

[0028] The water inlet pipe is arranged as a Venturi tube.

[0029] In an embodiment, the water inlet port is arranged as a plurality of ports, the water inlet pipe includes a water inlet main pipeline and a plurality of water inlet branch pipelines, the plurality of water inlet branch pipelines are connected to the water inlet main pipeline, and the plurality of water inlet branch pipelines are respectively connected to the plurality of water inlet ports.

[0030] In an embodiment, the interior of the piston is arranged as a liquid containing space, the liquid containing space is connected to the water inlet chamber through a liquid inlet port.

[0031] The liquid inlet is arranged on the side of the piston facing the water inlet port, and / or the central axis of the liquid inlet is not collinear with the central axis of the water inlet port.

[0032] In an embodiment, the detergent dispenser further comprises a plurality of liquid outlet channels arranged in an array from the center to the periphery of the liquid outlet port, the detergent dispenser dispensing the detergent into the mixing box through the liquid outlet port and the liquid outlet channels.

[0033] The second aspect of the present disclosure provides a detergent box comprising a mixing box, a liquid storage box, and the detergent dispenser of the first aspect of the present disclosure, the mixing box being provided with a liquid storage box inlet and outlet, the liquid storage box entering or leaving the interior of the mixing box through the liquid storage box inlet and outlet, the side of the mixing box opposite to the liquid storage box inlet and outlet having at least one dispenser mounting position, the dispenser mounting position being provided with a plurality of connecting joints, the connecting joints being in communication with the exterior and the interior of the mixing box, the connecting joints comprising a liquid supplementing joint in communication with the liquid supplementing port and a liquid discharging joint in communication with the liquid discharging port.

[0034] In an embodiment, the connecting joint further comprises at least one of:

[0035] a water outlet joint,

[0036] the side wall of the accommodation chamber is further provided with a water outlet port, and the water outlet joint is in communication with the water outlet port;

[0037] the side of the water outlet joint located in the interior of the mixing box is provided with a guide pipe, the outlet of the guide pipe facing the bottom of the mixing box; or, the interior of the mixing box is provided with a guide plate, the extension direction of the guide plate being substantially perpendicular to the bottom of the mixing box, the projection of the guide plate on the side wall of the mixing box at least partially coinciding with the projection of the water outlet joint on the side wall of the mixing box, the distance between the guide plate and the water outlet joint being less than a fourth distance threshold;

[0038] a pressure relief joint,

[0039] the side wall of the accommodation chamber is further provided with a pressure relief port, the pressure relief joint being in communication with the pressure relief port, the pressure relief joint being higher than the water outlet joint, the liquid supplementing joint, and the liquid discharging joint.

[0040] In an embodiment, the connecting joint is located at the bottom of the side wall of the mixing box.

[0041] In an embodiment, the liquid supplementing joint and the liquid storage box are in fluid communication through a liquid supply passage, the liquid supply passage being provided with a switch valve; when the liquid storage box is located outside the mixing box, the switch valve is closed, and the liquid supply passage is in a closed state; when the liquid storage box is located inside the mixing box, the switch valve is opened, and the liquid supply passage is in an open state.

[0042] The third aspect of the present disclosure provides a household appliance comprising the detergent box of the second aspect of the present disclosure.

[0043] The above description is only a summary of the technical solutions provided by the present disclosure. In order to enable one skilled in the art to better understand the technical means of the present disclosure, the present disclosure can be implemented according to the content of the specification, and in order to make the above and other characteristics and effects of the present disclosure more obvious and easy to understand, the following will describe the embodiments of the present disclosure. BRIEF DESCRIPTION OF DRAWINGS

[0044] The accompanying drawings, which are incorporated into and form part of the specification, illustrate embodiments consistent with the present disclosure and serve to explain the principles of the present disclosure together with the specification.

[0045] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, for those skilled in the art, other drawings can also be obtained from these drawings without creative labor.

[0046] Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the exemplary embodiments. The accompanying drawings are included to provide a description of the exemplary embodiments and are not meant to limit the present application. Moreover, the same reference numerals in the drawings indicate the same or similar elements. In the drawings:

[0047] Figure 1 A cross-sectional structure schematic diagram of the detergent dispensing device of the present disclosure equipped in a detergent box;

[0048] Figure 2 A cross-sectional structure schematic diagram of the detergent dispensing device of the present disclosure equipped in a detergent box;

[0049] Figure 3 A cross-sectional structure schematic diagram of the detergent dispensing device of the present disclosure equipped in a detergent box;

[0050] Figure 4 A cross-sectional structure schematic diagram of the detergent dispensing device of the present disclosure equipped in a detergent box;

[0051] Figure 5 A cross-sectional structure schematic diagram of the detergent dispensing device of the present disclosure equipped in a detergent box;

[0052] Figure 6 A cross-sectional structure schematic diagram of the detergent dispensing device of the present disclosure equipped in a detergent box;

[0053] Figure 7 A cross-sectional structure schematic diagram of the detergent dispensing device of the present disclosure equipped in a detergent box;

[0054] Figure 8Assembled structure of the body and pipeline assembly of the present disclosure;

[0055] Figure 9 Unassembled structure of the body and pipeline assembly of the present disclosure;

[0056] Figure 10 Structure of the connection between the mixing box and the detergent dispenser of the present disclosure;

[0057] Figure 11 Structure of the installation position of the liquid storage box of the mixing box of the present disclosure;

[0058] Figure 12 Structure of the installation position of the dispenser of the mixing box of the present disclosure;

[0059] Figure 13 Structure of the guiding part of the present disclosure being a guiding plate;

[0060] Figure 14 Structure of the installation position of the reset member of the present disclosure;

[0061] Figure 15A Structure of the detergent dispenser when the piston of the present disclosure is in the second position;

[0062] Figures 15B-15D Structure of the detergent dispenser when the piston of the present disclosure is between the first position and the second position;

[0063] Figure 15E Structure of the detergent dispenser when the piston of the present disclosure is in the first position;

[0064] Figure 16 Position of the cleaning port and the cleaning tube of the present disclosure.

[0065] Figure 17 Structure of the reset member and the liquid outlet connector of the present disclosure.

[0066] Wherein, Figures 1 to 17 The correspondence between the reference signs and the component names is as follows:

[0067] 100- umbrella valve;

[0068] 1- body; 11- accommodation chamber; 111- water inlet chamber; 112- liquid outlet chamber; 12- water inlet port; 13- liquid outlet port; 14- liquid supplement port; 15- pressure relief port; 16- water outlet port; 17- cleaning port; 18- backwater port;

[0069] 21- piston; 211- liquid containing space; 212- liquid inlet; 22- reset member;

[0070] 31 - water inlet pipe; 32 - water outlet pipe; 33 - backwater pipe; 34 - pressure relief pipe; 35 - liquid supplement pipe; 36 - cleaning pipe;

[0071] 4 - liquid storage box;

[0072] 5 - liquid mixing box; 51 - liquid storage box mounting port; 52 - dosing device mounting position; 520 - liquid supply passage; 521 - liquid supplement connector; 522 - water outlet connector; 523 - pressure relief connector; 524 - liquid discharge connector; 525 - guide pipe; 526 - guide plate; 53 - detergent mixing area. DETAILED DESCRIPTION

[0073] In order to more clearly understand the above-mentioned purposes, features and advantages of the present disclosure, the solutions of the present disclosure will be further described below. It should be noted that the embodiments of the present disclosure and the features in the embodiments can be combined with each other without conflict.

[0074] In the following description, many specific details are set forth in order to provide a thorough understanding of the present disclosure, but the present disclosure can also be implemented in other ways different from those described herein; obviously, the embodiments in the specification are only some of the embodiments of the present disclosure, not all the embodiments.

[0075] At present, the components required to be set in the detergent dosing device in the prior art have high cost, and the required energy consumption is high, and the use of electronic components in the water-involved device requires a relatively strict sealing process, which further increases the manufacturing cost.

[0076] Based on this, the first aspect of the embodiments of the present disclosure provides a detergent dosing device, which at least solves one of the technical problems in the prior art or related art.

[0077] The detergent dosing device will be described in detail below through specific embodiments.

[0078] Reference Figures 1 to 14As shown, the first aspect of the present disclosure provides a detergent dispensing device, comprising a body 1, a piston 21 and a reset member 22, the body 1 has a containing chamber 11, the containing chamber 11 is provided with a water inlet port 12 and a liquid outlet port 13, at least one liquid supplement port 14 is arranged on the side wall of the containing chamber 11, and the piston 21 and the reset member 22 are arranged in the containing chamber 11, wherein the containing chamber 11 has a water inlet end and a liquid outlet end, the piston 21 and the water inlet end define a water inlet chamber 111, and the piston 21 and the liquid outlet end define a liquid outlet chamber 112; the water inlet port 12 is arranged on the side of the containing chamber 11 where the water inlet end is arranged, the water inlet port 12 communicates with the water inlet chamber 111 and is isolated from the liquid outlet chamber 112; the liquid outlet port 13 is arranged on the side of the containing chamber 11 where the liquid outlet end is arranged, the liquid outlet port 13 communicates with the liquid outlet chamber 112 and is isolated from the water inlet chamber 111; the piston 21 moves between a first position and a second position in the containing chamber 11 to make the liquid supplement port 14 communicate with or be blocked by the piston 21 and the volume of the water inlet chamber 111 and the liquid outlet chamber 112 changes; when the liquid supplement port 14 communicates with the liquid outlet chamber 112 and the liquid outlet chamber 112 is not completely filled with detergent, the detergent stored in the liquid storage box 4 enters the liquid outlet chamber 112 through the liquid supplement port 14; when the liquid supplement port 14 is isolated from the liquid outlet chamber 112 and the volume of the liquid outlet chamber 112 decreases, the detergent flows out of the liquid outlet chamber 112 through the liquid outlet port 13 to achieve the dispensing of the detergent; the reset member 22 and the water pressure of the water inlet port 12 provide the reciprocating force of the piston 21.

[0079] The body 1 of the present disclosure can be provided as a hollow cylinder, a cube, a cuboid and a polygonal body, etc., wherein the shape of the body 1 and the shape of the internal space can be the same or different, and the present disclosure specifically provides that the shape of the body 1 and the internal shape are the same to facilitate the simplification of the manufacturing process. For example, the body 1 of the present disclosure is a hollow cylinder to facilitate the flow of water and the arrangement of internal components, wherein the hollow part is provided as the containing chamber 11.

[0080] It can be understood that the piston 21 of the present disclosure can match the internal shape and size of the body 1, and the piston 21 is arranged in the containing chamber 11 to divide the containing chamber 11 into the water inlet chamber 111 and the liquid outlet chamber 112. When the body 11 is a hollow cylinder, the piston 21 is also a cylinder. It can be understood that the outer diameter of the piston 21 substantially matches the inner diameter of the containing chamber 11, so that the piston can smoothly move in the containing chamber 11 while ensuring that the water inlet chamber 111 and the liquid outlet chamber 112 are fluidly isolated.

[0081] For ease of illustration, the up and down and the front and back are defined according to the direction shown in Figure 1

[0082] It can be understood that, for ease of understanding, part of the connected pipeline is shown in a disconnected manner.​

[0083] The accommodation chamber 11 has an accommodation chamber front end, i.e. a liquid discharge end, and an accommodation chamber rear end, i.e. a water inlet end; the piston 21 has a piston front end and a piston rear end; the part of the accommodation chamber 11 between the end face of the water inlet end and the piston rear end is a water inlet chamber 111; the part of the accommodation chamber 11 between the end face of the liquid discharge end and the piston front end is a liquid discharge chamber 112.

[0084] The accommodation chamber is provided with a water inlet port 12 and a liquid discharge port 13, respectively for water inlet to the water inlet chamber 111 and discharge of the detergent in the liquid discharge chamber 112. Exemplarily, the water inlet port 12 is arranged on the end face or the side wall of the water inlet end, and the liquid discharge port 13 is arranged on the end face or the side wall of the liquid discharge end. For example, the water inlet port 12 is arranged on the end face of the water inlet end, and the liquid discharge port 13 is arranged on the end face of the liquid discharge end, or the water inlet port 12 is arranged on the end face of the water inlet end, and the liquid discharge port 13 is arranged on the side wall of the liquid discharge end. The water inlet port 12 is always in communication with the water inlet chamber 111 and isolated from the liquid discharge chamber 112, and the liquid discharge port 13 is always in communication with the liquid discharge chamber 112 and isolated from the water inlet chamber 111.

[0085] Exemplarily, one end of the accommodation chamber 11 is provided with the water inlet port 12, and the opposite end is provided with the liquid discharge port 13. The water inlet port 12 and the liquid discharge port 13 can be arranged on the two ends of the body 1 and axially arranged with openings facing the accommodation chamber 11, or can be arranged on the side wall of the body 1 and radially arranged with openings facing the accommodation chamber 11. That is, the water inlet port 12 is arranged on the end face or the side wall of the water inlet end; the liquid discharge port 13 is arranged on the end face or the side wall of the liquid discharge end. Exemplarily, the water inlet port 12 can be arranged on one end of the body 1 and arranged with an opening facing the extension direction of the accommodation chamber 11, so as to facilitate the external water to enter the water inlet chamber 111 from the water inlet port 12 and then apply a force to the piston 21; exemplarily, the liquid discharge port 13 can be arranged on the other end of the body 1 and arranged with an opening facing the extension direction of the accommodation chamber 11, so as to facilitate the detergent in the liquid discharge chamber 112 to be discharged from the liquid discharge port 13 under the extrusion of the piston 21. It can be understood that a water inlet valve can be arranged on the upstream pipeline connected to the water inlet port 12 to control the water inlet and cut-off; a one-way valve can be arranged on the pipeline connected to the liquid discharge port 13, so that when the pressure in the liquid discharge chamber 112 is greater than a certain pressure threshold, the detergent in the liquid discharge chamber 112 is discharged from the liquid discharge port 13. Exemplarily, the one-way valve can be an umbrella valve.

[0086] The piston 21 reciprocates between two extreme positions, a first position being the most forward position that the piston 21 can reach and a second position being the most backward position that the piston 21 can reach. When the piston 21 reciprocates between the first position and the second position, the volumes of the water inlet chamber 111 and the liquid discharge chamber 112 change periodically. For example, when the piston moves from the first position to the second position, the volume of the liquid discharge chamber 112 increases and the volume of the water inlet chamber 111 decreases; when the piston moves from the second position to the first position, the volume of the water inlet chamber 111 increases and the volume of the liquid discharge chamber 112 decreases.

[0087] The side wall of the accommodation chamber 11 is provided with at least one liquid supplement port 14, which communicates with the liquid storage box 4 and is used to fill the liquid discharge chamber 112 with detergent. The liquid supplement port 14 can be provided as at least one, and when the liquid supplement port 14 is provided as a plurality, the plurality of liquid supplement ports 14 can respectively communicate with different liquid storage boxes to guide the detergents in the different liquid storage boxes into the liquid discharge chamber 112. The piston 21 reciprocates between the first position and the second position in the accommodation chamber 11 to make the liquid supplement port 14 communicate with the liquid discharge chamber 112 or be blocked by the piston 21. It should be noted that the liquid supplement port 14 only has two states, i.e., communicating with the liquid discharge chamber 112 and being blocked by the piston 21, and the liquid supplement port 14 is always not in communication with the water inlet chamber 111 during the movement of the piston 21.

[0088] When the liquid supplement port 14 communicates with the liquid discharge chamber 112 and the liquid discharge chamber 112 is not completely filled with detergent, the detergent stored in the liquid storage box 4 enters the liquid discharge chamber 112 through the liquid supplement port 14, and if the liquid supplement port 14 communicates with the liquid discharge chamber 112 for a long enough time, the liquid discharge chamber 112 will be filled with the detergent entering through the liquid supplement port 14. It can be understood that when the earlier of the time when the liquid supplement port 14 is blocked and the time when the liquid discharge chamber 112 is filled with detergent comes, the liquid supplement port 14 no longer supplements the liquid discharge chamber 112 with liquid.

[0089] It should be noted that the liquid storage box 4 is higher than the body 1, i.e., the liquid storage box 4 is located above the liquid supplement port 14, and as long as the liquid supplement port 14 communicates with the liquid discharge chamber 112 and the liquid discharge chamber 112 is not completely filled with detergent, the detergent in the liquid storage box 4 can enter the liquid discharge chamber 112 under the action of gravity without the need for an additional pump or valve control. The volume change of the liquid discharge chamber 112, i.e., the amount of detergent filled into the liquid discharge chamber 112, can be controlled by controlling the water inlet of the water inlet port and the reciprocation of the piston 21, so that the quantitative dispensing of the detergent without electrical components can be realized.

[0090] The liquid supplement port 14 is connected to the liquid discharge chamber 112, and when the volume of the liquid discharge chamber 112 is reduced, the liquid discharge chamber 112 has only one outlet, i.e., the liquid discharge port 13. Under the action of the pressure generated by the movement of the piston to reduce the volume of the liquid discharge chamber 112, the detergent flows out of the liquid discharge chamber 112 through the liquid discharge port 13 to achieve the dispensing of the detergent.

[0091] The reset member 22 and the water pressure of the water inlet port 12 provide the force for the reciprocating movement of the piston. For example, the reset member 22 is a spring that is always in a compressed state, and the compression amount of the reset member 22 when the piston 21 is in the first position is greater than the compression amount of the reset member 22 when the piston 21 is in the second position. Thus, the reset member 22 applies a force to the piston 21 to move from the first position to the second position, and the water pressure of the reset member and the water inlet port 12 applies a force to the piston 21 to move from the second position to the first position. By controlling whether the water inlet port 12 is supplied with water, the piston can be reciprocated between the first position and the second position.

[0092] The reset member 22 of the present disclosure drives the movement of the piston 21 in the accommodation chamber 11. The reset member 22 can be selected from a spring, an elastic pad, an elastic telescopic rod, etc. In the present disclosure, a spring is specifically selected as the reset member 22 to reduce the number of electromechanical control elements, simplify the structure, facilitate maintenance, and save costs. Specifically, the spring is arranged in the liquid discharge chamber 112 and can abut between the end face of the front end of the piston and the end face of the front end of the accommodation chamber 11. The outer diameter of the spring can be the same as the diameter of the piston 21. In order to better abut the piston 21 during state conversion, the outer diameter of the spring is slightly smaller than the diameter of the abutting surface of the piston 21. If the outer diameter of the spring is too small, the piston 21 can not be in good contact with the spring during liquid discharge, which can cause the spring to deviate and affect the movement of the piston 21. Further, the pitch of the spring should not be too small. If the pitch of the spring is too small, the contact part of the spring can block the liquid supplement port 14 and affect the input of the detergent. Alternatively, as shown in the figure, a groove can be formed on the abutting surface of the piston 21 to fix one end of the spring inside the groove. The diameter of the spring is smaller than the diameter of the piston 21, so that there is a gap between the spring and the liquid supplement port 14. This embodiment can set the outer diameter of the spring to be smaller and not block the liquid supplement port 14. Figure 14

[0093] ​To prevent the reset member 22 from blocking the liquid supplement port 14, the reset member can be provided as an elastic telescopic rod with a certain rigidity, which can abut against the center position of the piston 21 to form a gap with the liquid supplement port 14, thereby ensuring smooth input of the detergent. Alternatively, multiple elastic telescopic rods can be provided, which are arranged at intervals, and the interval part thereof is arranged corresponding to the liquid supplement port 14 to ensure smooth input of the detergent. For example, three elastic telescopic rods are provided, which are uniformly arranged to abut against the periphery of the abutting surface of the piston 21 to form a triangular point support, and the interval part between the elastic telescopic rods corresponds to the liquid supplement port 14 so that the liquid supplement port 14 is not blocked.

[0094] The size of the piston 21 can be selected as required. For example, the size of the piston 21 affects the starting water pressure, and the larger the piston 21 (e.g., the longer the length in the front-rear direction), the higher the starting water pressure. The length of the piston 21 also affects the stroke of the piston 21, and the shorter the piston 21, the greater the stroke of the piston 21. However, during the entire stroke of the piston 21, the water pressure applied to the piston 21 by the external water needs to be stable, which means that when the piston 21 is shorter, the water pressure needs to be stable for a longer period of time, which increases the difficulty of stable operation of the system. For example, the length of the piston 21 can be set to be two-fifths to five-fifths to three of the length of the accommodation chamber 11. For example, the length of the piston 21 can be set to be half of the length of the accommodation chamber 11.

[0095] The detergent dispensing device of the present disclosure can be used in cooperation with the mixing box 5 and the liquid storage box 4. The detergent in the liquid storage box 4 is supplemented to the detergent dispensing device through the liquid supplement port 14, and then is dispensed into the mixing box 5 through the liquid discharge port 13 of the detergent dispensing device, and then is discharged into the washing cavity of the household appliance through the liquid outlet of the mixing box 5.

[0096] The dispensing device of the embodiment of the present disclosure can automatically dispense a certain amount without using electrical components. During this process, the detergent naturally flows into the liquid discharge chamber 112 and is discharged from the liquid discharge chamber 112 when the piston 21 extrudes the liquid discharge chamber 112. Compared with the scheme in which the detergent naturally flows out of the liquid discharge chamber, the scheme of the embodiment of the present disclosure is more controllable in dispensing the detergent and is less likely to cause liquid leakage.

[0097] For example, the side wall of the accommodation chamber 112 is further provided with a water outlet port 16; the piston 21 reciprocates between the first position and the second position in the accommodation chamber 11 to make the water outlet port 16 communicate with the water inlet chamber 111 or be blocked by the piston. It should be noted that the water outlet port 16 only has two states of communicating with the water inlet chamber 111 and being blocked by the piston 21 to not communicate with the water inlet chamber 111, and the water outlet port 16 is always not in communication with the liquid discharge chamber 112 during the movement of the piston 21.

[0098] Exemplarily, the draining port 13 and the water outlet port 16 are both in communication with the mixing box 5, the detergent flows out of the draining chamber 112 via the draining port 13 and enters the mixing box 5; when the water inlet chamber 111 is in communication with the water outlet port 16, the water in the water inlet chamber 111 flows out of the water inlet chamber and enters the mixing box 5 via the water outlet port 16. In this way, the mixing box 5 can be wetted with water before the detergent enters the mixing box 5, wetted with water after the detergent enters the mixing box 5, or wetted with water before and after the detergent enters the mixing box 5, so that the detergent is more likely to flow from the mixing box 5 into the washing drum after flowing into the mixing box 5, avoiding the detergent adhering to the mixing box 5.

[0099] Exemplarily, the piston has a front end and a rear end.

[0100] The replenishing port 14 and the water outlet port 16 need to meet one of the following conditions.

[0101] Condition 1: when the piston 21 is in the second position, the replenishing port 14 is in communication with the draining chamber 112, and the distance between the replenishing port 14 and the front end of the piston 21 is less than the first distance threshold.

[0102] It can be understood that when the piston 21 is in the second position, the replenishing port 14 is in communication with the draining chamber 112, and the replenishing port 14 is located on the front side of the front end of the piston 21.

[0103] It can be understood that during the movement of the piston 21 from the first position to the second position, initially, the replenishing port 14 is blocked by the piston 21, when the front end of the piston 21 moves to the rear of the replenishing port 14, the replenishing port 14 is no longer blocked by the piston 21, and the replenishing port 14 is in communication with the draining chamber 112. From this time until the piston 21 moves to the second position, the replenishing port 14 remains in communication with the draining chamber 112. During the movement of the piston 21 from the second position to the first position, initially, the replenishing port 14 is not blocked by the piston 21 and is in communication with the draining chamber 112, when the front end of the piston 21 moves to the replenishing port 14 and continues to move to the first position, the replenishing port 14 is gradually blocked by the piston 21 and is no longer in communication with the draining chamber 112.

[0104] The position of the liquid supplement port 14 can be set as required. With the position of the front end of the piston 21 in the second position as a first reference position, the distance between the liquid supplement port 14 and the first reference position is less than a first distance threshold. The first distance threshold can be set as required, for example, 1 / 10 of the length of the accommodation chamber 11 to 1 / 4 of the length of the accommodation chamber 11. It can be understood that when the liquid supplement port 14 is in communication with the liquid discharge chamber 112, the ports in communication with the liquid discharge chamber 112 include the liquid supplement port 14 and the liquid discharge port 13, wherein the pipeline in communication with the liquid discharge port 13 is provided with a one-way valve, and when the pressure in the liquid discharge chamber 112 is greater than a certain pressure threshold, the detergent in the liquid discharge chamber 112 will be discharged from the liquid discharge port 13, and the pipeline in communication with the liquid supplement port 14 is not provided with a one-way valve. When the piston 21 moves to the first position to reduce the volume of the liquid discharge chamber 112, the detergent is more inclined to flow out of the liquid discharge chamber 112 from the liquid supplement port 14 without pressure, and only when the liquid supplement port 14 is blocked by the piston 21, the liquid supplement port 14 is no longer in communication with the liquid discharge chamber 112, and the volume of the liquid discharge chamber 112 is reduced, the detergent will be discharged from the liquid discharge port 13. Therefore, it is desirable to block the liquid supplement port 14 as early as possible during the movement of the piston 21 to the first position to achieve the early release of the detergent. For this purpose, the first distance threshold can be set as small as possible. At the same time, if the distance between the liquid supplement port 14 and the front end of the piston 21 in the second position is too small, the piston 21 will block the liquid supplement port 14 when it moves slightly to the first position, resulting in too short a liquid supplement time, and even failing to fill the liquid discharge chamber 112. This will affect the quantitative release of the detergent. Therefore, a suitable first distance threshold can be selected by considering the above factors. It can be understood that the inner diameter of the liquid supplement port 14 and the pipeline in communication therewith can be set as large as possible so as to quickly fill the liquid discharge chamber 112 during liquid supplement.

[0105] Condition 2: When the piston 21 is in the first position, the water outlet port 16 is in communication with the water inlet chamber 111, and the distance between the water outlet port 16 and the rear end of the piston 21 is less than a second distance threshold.

[0106] It can be understood that when the piston 21 is in the first position, the water outlet port 16 is in communication with the water inlet chamber 111, and the water outlet port 16 is located on the rear side of the rear end of the piston 21.

[0107] It can be understood that, during the movement of the piston 21 from the second position to the first position, initially, the water outlet port 16 is blocked by the piston 21, when the rear end of the piston 21 moves to the front of the water outlet port 16, the water outlet port 16 is no longer blocked by the piston 21, and the water outlet port 16 is in communication with the water inlet chamber 111, from this time until the piston 21 moves to the first position, the water outlet port 16 remains in communication with the water inlet chamber 111. During the movement of the piston 21 from the first position to the second position, initially, the water outlet port 16 is not blocked by the piston 21, and is in communication with the water inlet chamber 111, at this time, the water in the water inlet chamber 111 is discharged from the water outlet port and other ports in communication with the water inlet chamber 111, when the rear end of the piston 21 moves to the water outlet port 16 and continues to move to the second position, the water outlet port 16 is gradually blocked by the piston 21, and is no longer in communication with the water inlet chamber 111, at this time, the water in the water inlet chamber 111 can only be discharged from other ports in communication with the water inlet chamber 111.

[0108] The position of the water outlet port 16 can be set as required. With the position of the rear end of the piston 21 when the piston 21 is in the first position as a second reference position, the distance between the water outlet port 16 and the second reference position is less than a second distance threshold. The second distance threshold can be set as required, for example, 1 / 10 of the length of the accommodation chamber 11 to 1 / 4 of the length of the accommodation chamber 11. Illustratively, the second distance threshold can be the same as the first distance threshold. When the second distance threshold is larger, when the piston moves from the second position to the first position, the water outlet port 16 will be in communication with the water inlet chamber earlier, so that the mixing box can be wetted and flushed earlier, and the detergent can be prevented from adhering to the mixing box 5; at the same time, after the water outlet port 16 is in communication with the water inlet chamber 111, a part of the water entering from the water inlet port will be discharged from the water outlet port 16, which will reduce the pushing force of the water on the piston 21, when the inner diameter of the water outlet port 16 is too large, the piston 21 will stop moving when the water outlet port 16 is opened to a certain extent, in order to reduce the time of the water pressure, the piston should be moved from the second position to the first position as late as possible to open the water outlet port 16. Therefore, the water outlet port can be arranged at the rear side of the rear end of the piston when the piston is in the first position, and the distance between the water outlet port and the rear end of the piston is less than the second distance threshold, and a suitable second distance threshold can be selected according to the above factors as required. At the same time, the inner diameter of the water outlet port 16 and the communication pipeline thereof cannot be set too large, otherwise the reduction of the pushing force after the water outlet port 16 is in communication with the water inlet chamber will be too large.

[0109] Condition 3: When the piston 21 is in the second position, the liquid supplement port 14 is in communication with the liquid discharge chamber 112, and the distance between the liquid supplement port 14 and the front end of the piston 21 is less than the first distance threshold; when the piston 21 is in the first position, the water outlet port 16 is in communication with the water inlet chamber 111, and the distance between the water outlet port 16 and the rear end of the piston 21 is less than the second distance threshold.

[0110] Condition 3 is satisfied, i.e. both Condition 1 and Condition 2 are satisfied.

[0111] Condition 4: the distance between the water outlet port 16 and the replenishment port 14 is less than the length of the piston 21. In this way, the water outlet port 16 and the replenishment port 14 cannot be opened at the same time.

[0112] For example, the accommodation chamber 11 is further provided with at least one of a pressure relief port 15, a backwater port 18, and a cleaning port 17, for example, the accommodation chamber 11 is further provided with the pressure relief port 15, the accommodation chamber 11 is further provided with the backwater port 18, or the accommodation chamber 11 is further provided with the pressure relief port 15 and the backwater port 18.

[0113] The positions and functions of the pressure relief port 15, the backwater port 18, and the cleaning port 17 will be described below.

[0114] Exemplarily, the side wall of the accommodating chamber 11 is further provided with a pressure relief port 15, the pressure relief port 15 is in communication with the mixing box 5, and the piston 21 reciprocates between the first position and the second position in the accommodating chamber 11 to make the pressure relief port 15 communicate with the liquid discharge chamber 112 or be blocked by the piston 21; the distance between the pressure relief port 15 and the liquid discharge port 13 and the distance between the liquid supplement port 14 and the liquid discharge port 13 are different by less than a third distance threshold. Exemplarily, the distance between the pressure relief port 15 and the liquid discharge port 13 and the distance between the liquid supplement port 14 and the liquid discharge port 13 are substantially the same and are distributed on both sides of a plane that is parallel to the front-rear direction of the body and passes through the body axis. It can be understood that, in the liquid supplement process, the detergent needs to squeeze the air in the liquid discharge chamber 112, and it is difficult to squeeze the air out of the liquid discharge port 13, so as to facilitate the squeezing of the air in the liquid supplement process, the liquid discharge chamber 112 is further provided with a pressure relief port 15, the pressure relief port 15 is in communication with the mixing box, so that when the pressure relief port 15 is not blocked, the liquid discharge chamber 112 can communicate with the atmosphere through the pressure relief port 15, facilitating the liquid supplement. Therefore, the position of the pressure relief port 15 should be adjacent to the position of the liquid supplement port 14, that is, when the liquid supplement port 14 is open (not blocked), the pressure relief port 15 should also be open (not blocked), so that the distance between the pressure relief port 15 and the liquid discharge port 13 and the distance between the liquid supplement port 14 and the liquid discharge port 13 are substantially the same. It can be understood that, when the liquid supplement port 14 and the pressure relief port 15 communicate with the liquid discharge chamber 112, the ports in communication with the liquid discharge chamber 112 include the liquid supplement port 14, the pressure relief port 15 and the liquid discharge port 13, wherein the pipeline connected with the liquid discharge port 13 is provided with a one-way valve, and when the pressure in the liquid discharge chamber 112 is greater than a certain pressure threshold, the detergent in the liquid discharge chamber 112 will be discharged from the liquid discharge port 13, and the pipelines connected with the liquid supplement port 14 and the pressure relief port 15 are not provided with a one-way valve, when the piston 21 moves to the first position to reduce the volume of the liquid discharge chamber 112, the detergent tends to flow out of the liquid discharge chamber 112 from the liquid supplement port 14 and the pressure relief port 15 which have no pressure, and only when the liquid supplement port 14 and the pressure relief port 15 are blocked by the piston 21, the liquid supplement port 14 no longer communicates with the liquid discharge chamber 112 and the volume of the liquid discharge chamber 112 is reduced, the detergent will be discharged from the liquid discharge port 13. Therefore, it is desirable to block the liquid supplement port 14 and the pressure relief port 15 as early as possible during the movement of the piston 21 to the first position, so as to realize the detergent dispensing as early as possible. For this purpose, the third distance threshold can be set as small as possible.

[0115] Exemplarily, the upstream of the water inlet port 12 is provided with a water inlet valve, and the detergent dispensing device further comprises a backwater port 18 arranged between the water inlet port 12 and the water inlet valve, the backwater port 18 is in communication with the mixing box 5; when the water inlet valve is closed and the volume of the water inlet chamber 111 is reduced, the water in the water inlet chamber 111 flows out of the water inlet chamber 111 through the backwater port 18 and enters the mixing box 5.

[0116] It is understood that a water inlet valve is arranged upstream of the water inlet port 12. When the water inlet valve is open, water will flow into the water inlet chamber 111, and the water in the water inlet port 12 will push the piston 21 from the second position to the first position. Then, the water inlet valve is closed, and the piston 21 is moved from the first position to the second position under the action of the restoring member 22. In this process, the volume of the water inlet chamber 111 is reduced, and the water in the water inlet chamber 111 needs to be discharged. The ports that can be communicated with the water inlet chamber include the water outlet port 16, but since the water outlet port 16 is generally located at the upper part of the body 1, and the water outlet port 16 will be blocked by the piston 21 after the piston 21 is moved from the first position to the second position to a certain extent, some water in the water inlet chamber 111 cannot be discharged through the water outlet port 16. Therefore, a backwater port 18 can be arranged near the water inlet port 12, for example, between the water inlet port 12 and the water inlet valve, so that the water in the water inlet chamber 111 can still be discharged through the backwater port 18 when the volume of the water inlet chamber 111 is close to 0.

[0117] For example, the side wall of the accommodation chamber 11 is further provided with a cleaning port 17, and the distance between the cleaning port 17 and the liquid discharge port 13 is less than the distance between the liquid supplement port 14 and the liquid discharge port 13.

[0118] For example, the liquid supplement port 14, the water outlet port 16, the pressure relief port 15, and the cleaning port 17 are all located on the side of the accommodation chamber 11 and at the upper part of the accommodation chamber 11, so as to facilitate fluid communication with the liquid mixing box.

[0119] It can be understood that, no matter where the piston 21 is located, the water inlet port 12, the water outlet port 16 and the backwater port 18 are always not communicated with the drainage chamber 112, the liquid supplement port 14, the drainage port 13 and the pressure relief port 15 are always not communicated with the water inlet chamber 111, the water inlet port 12 and the pressure relief port are always communicated with the water inlet chamber 111, and the drainage port 13 is always communicated with the drainage chamber 112. If the condition is met, the length of the piston, the positions of the ports and the first position and the second position need to meet certain relationships. The first position and the second position are counted from the center position of the piston 21, the water inlet end of the accommodation chamber 11 is taken as the origin, the front-back direction of the accommodation chamber 11 is taken as the coordinate axis, the length of the piston 21 in the front-back direction is d, the first position is min (the position of the liquid supplement port 14 + 1 / 2d, the position of the drainage port 13 - 1 / 2d), that is, the first position is the smaller one of the position of the liquid supplement port 14 + 1 / 2d and the position of the drainage port - 1 / 2d; the second position is max (the position of the water inlet port + 1 / 2d, the position of the water outlet port - 1 / 2d), that is, the second position is the larger one of the position of the water inlet port + 1 / 2d and the position of the water outlet port - 1 / 2d. For example, when the length d of the piston 21 is large, for example, 1 / 2 of the length of the accommodation chamber 11 in the front-back direction, the first position is the position of the drainage port - 1 / 2d, and the second position is the position of the water inlet port + 1 / 2d. That is, when the piston 21 is in the first position, the front end of the piston 21 basically reaches the drainage end of the accommodation chamber 11, and when the piston 21 is in the second position, the rear end of the piston 21 basically reaches the water inlet end of the accommodation chamber 11.

[0120] For example, one sealing ring groove can be arranged at the front end and the rear end of the piston 21 respectively, for placing two sealing rings, the sealing ring at the front end is used to ensure the sealing between at least one of the water inlet port 12, the water outlet port 16 and the backwater port 18 and the drainage chamber 112, and the sealing ring at the rear end is used to ensure the sealing between at least one of the liquid supplement port 14, the drainage port 13 and the pressure relief port 15 and the water inlet chamber 111.

[0121] It can be understood that the position of the assembly referred to in the embodiments of the present disclosure can refer to the position of the center of the assembly, and the distance between two assemblies can refer to the distance between the centers of the two assemblies.

[0122] The following describes the dispensing process of the detergent dispensing device.

[0123] Specifically, the water inlet port 12 is always communicated with the water inlet chamber 111, and the drainage port 13 is always communicated with the drainage chamber 112. For example, Figure 15AAs shown, the piston is in the second position, the water outlet port 16 is blocked, the liquid supplement port 14 and the pressure relief port 15 are not blocked, and the liquid supplement port 14, the pressure relief port 15 and the liquid discharge chamber 112 are in communication. At this time, if the liquid discharge chamber 112 is not filled with the detergent, the detergent in the liquid storage box 4 will flow into the liquid discharge chamber 112 through the liquid supplement port 14 under the action of gravity due to the fact that the liquid storage box 4 is higher than the body 1.

[0124] The water inlet valve upstream of the water inlet port 12 is opened, and water from outside (for example, from a tap) enters the water inlet chamber 111 through the water inlet port 12. When the pressure of the water inlet chamber 111 reaches a certain pressure threshold, the piston 21 is pushed to move from the second position to the first position against the force of the return element 22, so that the volume of the water inlet chamber 111 gradually increases and the volume of the liquid discharge chamber 112 gradually decreases. If the liquid discharge chamber 112 has been filled at this time, the detergent in the liquid discharge chamber 112 may flow out of the liquid discharge chamber 112 through the liquid supplement port 14 and the pressure relief port 15 when the volume of the liquid discharge chamber 112 decreases. It can be understood that, due to the fact that the connecting pipeline between the liquid supplement port 14, the pressure relief port 15 and the mixing box 5 is long enough, the detergent flowing out of the liquid supplement port 14 and the pressure relief port 15 will not flow into the mixing box 5, but will remain in the connecting pipeline, as shown in Figure 15B .

[0125] The piston 21 continues to move to the first position, and the water outlet port 16, the liquid supplement port 14 and the pressure relief port 15 are simultaneously blocked by the piston 21 due to the fact that the length of the piston 21 is greater than the distance between the water outlet port 16 and the liquid supplement port 14. For the case that the water outlet port 16, the liquid supplement port 14 and the pressure relief port 15 are simultaneously blocked by the piston 21, as shown in 15C, the detergent in the liquid discharge chamber 112 no longer flows out of the liquid supplement port 14 and the pressure relief port 15, but flows out of the liquid discharge port 13.

[0126] Then, the piston 21 continues to move to the first position, and the water outlet port 16 is no longer blocked by the piston 21, but is in communication with the water inlet chamber 111, the water in the water inlet chamber 111 flows out of the water outlet port 16 into the mixing box 5, the liquid supplement port 14 and the pressure relief port 15 are blocked by the piston 21, and the detergent in the liquid discharge chamber 112 flows out of the liquid discharge port 13 into the mixing box 5. As shown in 15D.

[0127] After that, the piston 21 moves to the first position, and all the detergent in the liquid discharge chamber 112 flows out of the liquid discharge port 13 into the mixing box 5, and the water inlet valve stops water inlet. As shown in 15E.

[0128] The piston 21 is moved from the first position to the second position under the action of the restoring member 22, in the process, the volume of the water inlet chamber 111 gradually decreases, and the volume of the liquid discharge chamber 112 gradually increases. The water outlet port 16 is still in communication with the water inlet chamber 111, and the water in the water inlet chamber 111 is discharged from the water outlet port 16 and the backwater port 18 into the mixing box 5. The liquid supplement port 14 and the pressure relief port 15 are still blocked by the piston 21. As shown in Figure 15D .

[0129] The piston 21 continues to move to the second position, and since the length of the piston 21 is greater than the distance between the water outlet port 16 and the liquid supplement port 14, the water outlet port 16, the liquid supplement port 14 and the pressure relief port 15 are simultaneously blocked by the piston 21. As shown in Figure 15C , the water in the water inlet chamber 111 is no longer discharged from the water outlet port 16 into the mixing box 5, but only discharged through the backwater port 18 into the mixing box 5, and the detergent in the liquid storage box 4 no longer enters the liquid discharge chamber 112 through the liquid supplement port 14.

[0130] The piston 21 continues to move to the second position, and the volume of the water inlet chamber 111 further decreases, and the volume of the liquid discharge chamber 112 further increases. The water outlet port 16 is blocked, the water in the water inlet chamber 111 is discharged through the backwater port 18, the liquid supplement port 14 and the pressure relief port 15 are opened, and the detergent in the liquid storage box 4 continues to enter the liquid discharge chamber 112 through the liquid supplement port 14, as shown in Figure 15B .

[0131] The piston 21 reaches the second position, the liquid discharge chamber 112 is filled with the detergent, and the water inlet valve upstream of the water inlet port 12 starts to supply water again. The whole process is repeated. As shown in Figure 15A .

[0132] It can be understood that, according to the required amount of detergent dispensing, one dispensing process can be performed, or multiple dispensing processes can be continuously performed.

[0133] It can be understood that multiple detergent dispensing devices can be connected to the same mixing box 5 and liquid storage box 4. The multiple detergent dispensing devices each correspond to a water inlet valve, for example, the water inlet valves of two detergent dispensing devices can be opened and closed at the same time, so that the two detergent dispensing devices have the same dispensing rhythm, that is, the detergent is supplemented and dispensed at the same time. For example, the water inlet valves of the two detergent dispensing devices can also be opened and closed at different times, so that they supplement and dispense the detergent according to independent machine heads.

[0134] It should be noted that when the water inlet valve is opened and the piston 21 blocks the water outlet port 16, the water inlet of the water inlet port 12 pushes the piston to move to the first position; when the water inlet valve is opened and the water outlet port 16 is communicated with the water inlet chamber 111, the water in the water inlet chamber 111 is directly discharged into the mixing box 5 through the water outlet port 16 and the water outlet pipe 32; when the water outlet port 16 is communicated with the water inlet chamber 111 and the water inlet valve is closed, the water in the water inlet chamber 111 is directly discharged into the mixing box 5 through the water outlet port 16 and the water return port 18; when the water outlet port 16 is blocked by the piston 21 and the water inlet valve is closed, the water in the water inlet chamber 111 is discharged into the mixing box 5 through the water return port 18.

[0135] It can be understood that when the piston 21 is substantially in the first position, the front end of the piston 21 is in contact with the end face of the liquid outlet end, and the reset member 22 cannot be located between the two, and the detergent located between the two cannot be discharged from the liquid discharge chamber 112. The present disclosure can be as shown in Figure 14 The reset member 22 is accommodated in the reset member accommodation groove when the piston 21 extrudes the reset member 22 to the first position.

[0136] In some embodiments, the detergent dispensing device of the present disclosure dispenses the detergent into the mixing box 5 through the liquid discharge port 13, and further comprises a pipeline assembly 3, which comprises a liquid supplement pipe communicating the liquid supplement port 14 and the mixing box 5, and a water outlet pipe 32 communicating the water outlet port and the mixing box.

[0137] In this embodiment, the present disclosure further provides a pipeline assembly 3 for communicating at least one of the body 1 and the mixing box 5, the liquid storage box 4, and the external water inlet. For example, at least part of the pipeline assembly 3 can be integrally formed, and the integrally formed pipeline assembly 3 can be detachably connected with the body 1, and the corresponding pipelines and ports are communicated when the two are connected. In this way, the assembly integration and the convenience of device assembly, maintenance, and replacement can be increased. In addition, the pipeline assembly 3 and the body 1 can increase the expandability of the dispensing device and the detergent box of the present disclosure, provide more configuration space for intelligent control, and increase the integration of the detergent dispensing device, thereby reducing the difficulty of processing and operation.

[0138] For example, at least part of the pipeline assembly 3 and at least part of the body 1 can be detachably connected. For example, the water inlet pipe 31 in the pipeline assembly 3 can be integrally formed with the body 1. For example, the water inlet pipe 31 is integrally formed with the body 1, and the part of the pipeline assembly 3 except the water inlet pipe 31 is integrally formed and detachably connected with the body 1.

[0139] For example, the liquid supplement pipe 35 is communicated with the mixing box 5, and there is a pipeline communication between the mixing box 5 and the liquid storage box 4, so that the liquid supplement pipe 35 is communicated with the liquid storage box 4.

[0140] For example, one end of the water outlet pipe 32 is in communication with the water outlet port 16, and the other end is in communication with the mixing box 5. The external water is input into the water inlet chamber 111 through the water inlet pipe 31. When the water outlet pipe 32 is in communication with the water inlet chamber 111, part of the water in the water inlet chamber 111 is discharged into the mixing box of the detergent box through the water outlet pipe 32, mixed with the detergent discharged from the water outlet port 16, and then diluted to reduce the residue of the detergent in the mixing box and the probability of the joint connected with the water outlet port being blocked. Through the arrangement of the water outlet pipe 32, the detergent dispenser can directly inject water into the mixing box 5 without the need to increase other external equipment. When the water inlet chamber 112 is not filled with the detergent, the water injected from the water inlet port 12 can be discharged into the mixing box 5 through the water outlet pipe 32, so as to clean the inside of the mixing box 5, thereby solving the cleaning problem of the mixing box 5 which cannot be taken out or is not convenient to contact.

[0141] In some embodiments, the pipeline assembly 3 can further include at least one of the pressure relief pipe 34, the backwater pipe 33, the cleaning pipe 36, and the water inlet pipe 31. It can be understood that the pipeline assembly 3 includes the corresponding pipeline only when the body includes the corresponding port. For example, the body includes the pressure relief port 15, the backwater port 18, and the water inlet port 12, and the pipeline assembly 3 includes the pressure relief pipe 34, the backwater pipe 33, and the water inlet pipe 31, and the pipeline assembly is connected with the corresponding port.

[0142] The pressure relief pipe 34 is arranged on the side wall of the accommodating chamber and is in communication with the mixing box 5. The piston 21 reciprocates between the first position and the second position in the accommodating chamber 11 to make the pressure relief port 15 communicate with or be blocked by the piston 21. The distance difference between the pressure relief port 15 and the water outlet port 13 and the distance difference between the liquid supplement port 14 and the water outlet port 13 is less than the third distance threshold. The pressure relief pipe 34 is in communication with the pressure relief port and the mixing box.

[0143] The backwater pipe 33 is arranged upstream of the water inlet port and is in communication with the mixing box. When the water inlet valve is closed and the water inlet chamber is reduced, the water in the water inlet chamber flows out of the water inlet chamber through the backwater port and enters the mixing box. The backwater pipe is in communication with the backwater port and the water outlet pipe.

[0144] In some embodiments, the pipeline assembly 3 includes the backwater pipe 33 which is in communication with the water inlet pipe 31 and the water outlet pipe 32. After the water inlet pipe 31 stops water inlet, the piston 21 moves from the first position to the second position under the action of the reset member 22, and the residual water in the water inlet chamber 111 is discharged from the water outlet pipe 32 and the water inlet pipe 31. After the piston 21 further moves to the second position to block the water outlet pipe 32, the residual water in the water inlet chamber 111 enters the water inlet pipe 31 and is then discharged from the backwater pipe 31 into the water outlet pipe 32.

[0145] In some embodiments, the diameter of the backwater pipe 33 is set as small as possible to avoid excessive water from the water inlet pipe 31 being directly discharged to the mixing box 5 via the backwater pipe 33 and the water outlet pipe 32, which results in the water pushing force on the piston 21 being reduced. For example, the diameter of the backwater pipe 33 is smaller than the diameter of the water inlet pipe 31, and for example, the diameter of the backwater pipe 33 is smaller than the diameter of the water outlet pipe 32. For example, the diameter of the backwater pipe 33 is greater than 1 mm, such as 2 mm, to reduce the probability of being blocked by foreign matter in the water.

[0146] The cleaning pipe 36 is connected to the cleaning port 17 of the drain chamber 112, and the cleaning pipe 36 is used to input cleaning water to the drain chamber 112.

[0147] In some embodiments, the pipeline assembly 3 further comprises a cleaning pipe 36, and the drain chamber 112 is provided with a cleaning port 17, and the cleaning pipe 36 is connected to the cleaning port 17, and the cleaning pipe 36 is used to input cleaning water to the drain chamber 112.

[0148] In this embodiment, in order to prevent the drain chamber 112 from causing the port connected to the drain chamber 112 to be blocked or the space of the drain chamber 112 to be reduced due to the viscosity of the detergent, the present disclosure is provided with a cleaning pipe 36 connected to the cleaning port 17 of the drain chamber 112, and the water source of the cleaning pipe can be connected to the water inlet pipe 31 or the water outlet pipe 32, or can be other external water supply. In the embodiment in which the cleaning pipe 36 is connected to the water inlet pipe 31 or the water outlet pipe 32, a stop valve can be provided on the communication flow path connected to the water inlet pipe 31 or the water outlet pipe 32 and the cleaning pipe 36 to prevent water in the water source from flowing into the drain chamber 112 when the drain chamber 112 is not needed to be cleaned. For example, the distance between the cleaning port 17 and the drain port 13 can be smaller than the distance between the liquid supplement port 14 and the drain port 13, so that when the position of the piston 21 opens the cleaning port 17 and does not open the liquid supplement port, the drain chamber 112 can be cleaned.

[0149] The water inlet pipe 31 is provided with a water inlet valve upstream of the water inlet port 12, and the detergent dispensing device further comprises a water inlet pipe 31 provided between the water inlet port 12 and the water inlet valve. The water inlet valve can control whether there is water flow in the water inlet pipe.

[0150] It can be understood that the water inlet pipe 31 is in communication with an external water source, the water outlet pipe 32, the pressure relief pipe 34 are in communication with the mixed liquid box 5, and the liquid supplement pipe 35 is in communication with the liquid storage box 4. Exemplarily, an electric shut-off valve, a water distribution valve, a pressure increasing valve, etc. can be arranged on the water inlet pipe 31, and the functions of water blocking, flow adjustment and pressure increasing, etc. can be performed when the dispensing device of the present disclosure is not needed to be driven.

[0151] Exemplarily, the pipeline assembly 3 satisfies at least one of the following:

[0152] The pipe diameter of the backwater pipe 33 is smaller than the pipe diameter of the water outlet pipe 33;

[0153] The pipe diameter of the liquid supplement pipe 35 is larger than the pipe diameter of the water outlet pipe 33;

[0154] The end of the pressure relief pipe 34 communicating with the mixed liquid box is higher than the end of the water outlet pipe communicating with the mixed liquid box;

[0155] The end of the pressure relief pipe 34 communicating with the mixed liquid box is higher than the end of the liquid discharge pipe communicating with the mixed liquid box;

[0156] The end of the pressure relief pipe 34 communicating with the mixed liquid box is higher than the end of the liquid supplement pipe communicating with the mixed liquid box;

[0157] The water inlet pipe 31 is arranged as a Venturi tube.

[0158] In some embodiments, the pipe diameter of the liquid supplement pipe 35 is larger than the pipe diameter of the water outlet pipe 32. As described above, the liquid supplement pipe 35 needs to have a larger pipe diameter to fill the liquid discharge chamber 112 with the detergent as soon as possible, and the water outlet pipe 32 needs to have a smaller pipe diameter to avoid excessive influence on the water pressure for pushing the piston 21. Therefore, the pipe diameter of the liquid supplement pipe 35 can be larger than the pipe diameter of the water outlet pipe 32. Exemplarily, the pipe diameter of the pressure relief pipe 34 can be close to the pipe diameter of the liquid supplement pipe 35.

[0159] In some embodiments, the water inlet pipe 31 is arranged as a Venturi tube.

[0160] In this embodiment, the water inlet pipe 31 of the present disclosure is arranged as a Venturi tube, which is composed of an inlet section, a contraction section, a throat and an expansion section. Its working principle is based on Bernoulli's theorem and the continuity equation. By measuring the pressure difference at the inlet cross section and the minimum cross section of the Venturi tube, the flow rate of the fluid can be calculated. By calculating the injection flow rate of the external water, the determination of the piston 21 starting pressure can be performed, and the actual pushing force of the piston 21 on the detergent inside the liquid discharge chamber 112 can be obtained, so as to realize the accurate control of the discharge speed and discharge amount of the detergent.

[0161] In some embodiments, the end of the pressure relief pipe 34 communicating with the mixed liquid box is higher than the end of the water outlet pipe, the liquid supplement pipe and the liquid discharge pipe communicating with the mixed liquid box;

[0162] The arrangement is made because, although the pressure relief pipe 34 is arranged to communicate with the atmosphere, no valve is arranged therein, and when the liquid discharge chamber 112 is reduced in volume and the pressure relief port 15, which communicates the pressure relief pipe 34 and the accommodation chamber 11, is not blocked, some of the detergent can be discharged from the pressure relief port 15 to the pressure relief pipe. The higher height of the end of the pressure relief pipe 34, which communicates the mixing box, can ensure that the detergent entering the pressure relief pipe 34 will not be discharged into the mixing box 5, but will return to the liquid discharge chamber 112 again in the next liquid supplementing process, so that the amount of detergent to be discharged can be more accurate.

[0163] In this embodiment, the water inlet port 12 is arranged in plurality, and the water inlet pipe 31 comprises a water inlet main pipe and a plurality of water inlet branch pipes, the plurality of water inlet branch pipes are connected to the water inlet main pipe, and the plurality of water inlet branch pipes are respectively connected to the plurality of water inlet ports 12.

[0164] In this embodiment, the water inlet pipe 31 comprises a water inlet main pipe and a plurality of water inlet branch pipes, specifically, the plurality of water inlet branch pipes can be arranged as water distribution rows or water distribution pipes, etc., and the plurality of water inlet ports 12 are respectively connected to the plurality of water inlet branch pipes, so as to increase the water inlet flow and the water inlet pressure, so that the moving speed of the piston 21 is faster, thereby achieving the rapid discharge of the detergent. Further, a separate stop valve can be arranged on each water inlet branch pipe, so as to adjust the water inlet flow and the pressure to achieve the adjustment of the moving speed of the piston 21.

[0165] In some embodiments, the piston 21 is internally provided with a liquid containing space 211, and the liquid containing space 211 is communicated with the water inlet chamber 111 through a liquid inlet port 212. Exemplarily, the liquid inlet port 212 is arranged on the side of the piston 21 facing the water inlet port 12. Exemplarily, the central axis of the liquid inlet port and the central axis of the water inlet port are not collinear.

[0166] In this embodiment, the piston 21 of the present disclosure can be provided as a hollow structure, one end of the piston 21 is provided with a liquid inlet 212, and the opposite end is a closed end. The hollow structure can play a buffering role, reducing the impact force of the instantaneous injection of the water flow, allowing the piston to move at a relatively stable speed, so that the detergent is slowly squeezed out, avoiding the detergent from splashing out of the range of the water flow. In addition, in the liquid discharge working condition, external water enters the water inlet chamber 111 from the water inlet port 12. In the case of small external water pressure, the external water gradually enters the water inlet chamber 111, and then enters the liquid storage space 211 of the piston 21 through the liquid inlet 212. The external water occupies the space of the water inlet chamber 111 and the liquid storage chamber 211, and gradually pushes the piston 21 to move to discharge the detergent in the liquid discharge chamber 112; in the case of large external water pressure, the external water will quickly enter the water inlet chamber 111. At this time, the external water gradually enters the liquid storage space 211, first pushes the piston 21 body around the liquid inlet 212 to move to discharge the detergent, which is beneficial to the rapid start of the piston 21, thereby reducing the time length from the detergent dispensing instruction to the start of the detergent dispensing. In addition, the driving speed and state of the piston 21 can be adjusted by setting different amounts of fillers in the hollow structure of the piston 21, which can increase the dispensing flexibility.

[0167] In some embodiments, the center axis of the liquid inlet 212 and the center axis of the water inlet port 12 can not be collinear, that is, the liquid inlet 212 and the water inlet port 12 are staggered. The staggered arrangement of the liquid inlet 212 and the water inlet port 12 can drive the piston 21 to move first in the case of large external water pressure, and the external water will not directly enter the liquid storage space 211 through the liquid inlet 212 after entering the water inlet chamber 111. It should be noted that there are two driving conditions in the above working condition. When the liquid inlet 212 is relatively large and is arranged opposite or partially opposite to the water inlet port 12, the external water will enter the liquid storage space 211 and the water inlet chamber 111 at the same time, and the driving process of the piston 21 is to wait for the external water to occupy a threshold in both to drive the piston 21; and the liquid inlet 212 and the water inlet port 12 are staggered, the external water will first drive the piston 21 to move to discharge the detergent, and then wait for the external water to occupy until the detergent is completely discharged.

[0168] In some embodiments, the detergent dispensing device further comprises a plurality of liquid discharge flow channels connected with the liquid discharge port 13, which are arranged in an array from the center of the liquid discharge port 13 to the periphery.

[0169] In this embodiment, the liquid discharge port 13 is provided with a plurality of liquid discharge flow channels, which can form a plurality of independent liquid discharge outlets, so that a certain amount of detergent entering the mixing box 5 has a certain degree of separation, which can better increase the mixing degree of the mixed preparation of multiple detergents. Further, the liquid discharge flow channel slopes from one end of the liquid discharge chamber 112 to the outside of the liquid discharge chamber 112, so that the detergent is better discharged from the liquid discharge flow channel.

[0170] In a second aspect of the present disclosure, a detergent box is provided, which comprises a liquid storage box 4, a mixing box 5, and the detergent dispensing device provided in the first aspect of the present disclosure. The mixing box 5 is provided with a liquid storage box mounting port 51, the liquid storage box enters or exits the inside of the mixing box through the liquid storage box inlet and outlet, and the side of the mixing box 5 opposite to the liquid storage box mounting port 51 has at least one dispensing device mounting position 52. The dispensing device mounting position 52 is provided with a plurality of connecting joints, which communicate the outside and the inside of the mixing box 5. The connecting joints include a liquid supplementing joint 521 communicating with the liquid supplementing port 14 and a liquid discharging joint 524 communicating with the liquid discharging port 13.

[0171] The liquid storage box 4 communicates with the mixing box 5 through a pipeline, the mixing box 5 communicates with the liquid supplementing joint, so as to supplement the detergent in the liquid storage box 4 to the liquid discharge chamber 112 through the liquid supplementing joint 521, the liquid supplementing pipeline, and the liquid supplementing port 14. The liquid discharging port 13 communicates through the liquid discharging pipeline, the liquid discharging joint 524, and the mixing box 5, so as to dispense the detergent in the body 1 liquid discharge chamber 112 to the mixing box 5.

[0172] For example, the connecting joint can include a through hole provided on the side of the mixing box 5 and corresponding to each pipeline, and a first connecting piece provided on the outer periphery of the through hole and used for connecting with the pipeline assembly. It can be understood that the first connecting piece is provided on the side of the mixing box 5 and located on the side of the mixing box 5 facing the detergent dispensing device. The connecting joint can further include a second connecting piece provided on the outer periphery of the through hole, and the second connecting piece is provided on the side of the mixing box 5 and located on the side of the mixing box 5 away from the detergent dispensing device.

[0173] It can be understood that the dispensing device and the dispensing device mounting position 52 can be one-to-one corresponding. One detergent box can include one or more dispensing devices, and correspondingly, the detergent mixing box can be provided with one or more dispensing device mounting positions.

[0174] One detergent box can include one or more detergent dispensing devices, and the liquid storage box 4 can include one or more liquid storage chambers. The plurality of dispensing devices and the plurality of liquid storage chambers can be one-to-one corresponding. The liquid supplementing port of each dispensing device is in fluid communication with the liquid storage chamber corresponding thereto, and is used for dispensing the detergent in the liquid storage chamber corresponding thereto to the mixing box 5. Of course, the plurality of dispensing devices can correspond to the same liquid storage chamber.

[0175] It can be understood that the liquid storage box 4 can be pulled out of the mixing box 5 or pushed into the mixing box 5 through the liquid storage box mounting port 51, so that the liquid storage box is located outside or inside the mixing box 5, respectively.

[0176] In some embodiments, the connecting joint further comprises a water outlet joint 522 and a pressure relief joint 523. For example, in the height direction, the connecting joints are sequentially arranged from top to bottom in the height direction of the mixing box as the pressure relief joint 523, the water outlet joint 522, the liquid supplementing joint 521, and the liquid discharging joint 524. It can be understood that the connecting joints, the ports, and the pipeline assembly include one-to-one corresponding pipelines. When the body 1 includes a water outlet port, the pipeline assembly includes a water outlet pipe, and the connecting joint includes a water outlet joint. When the body 1 does not include a water outlet port, the pipeline assembly does not include a water outlet pipe, and the connecting joint does not include a water outlet joint.

[0177] For example, to prevent water from the water outlet joint from splashing in the mixing box 5, a guide pipe or a guide plate can be provided.

[0178] For example, when the connecting joint includes the water outlet joint 522, a guide pipe 525 is arranged on one side of the mixing box inside the water outlet joint. The outlet of the guide pipe 525 is directed towards the bottom of the mixing box. The guide pipe 525 is used to direct the water sprayed by the water outlet joint 522 to the bottom of the mixing box 5. For example, the guide pipe can be an elbow pipe. For example, the guide pipe 525 is used to direct the water sprayed by the water outlet joint to the detergent mixing area 53 at the bottom of the mixing box 5, so as to flush the detergent discharged by the liquid discharging joint to the bottom of the mixing box 5 towards the washing cavity, thereby reducing the residue of the detergent in the mixing box 5. At the same time, it can prevent the splashing water from generating a pushing force directed towards the liquid storage box mounting port 51 on the liquid storage box 4.

[0179] In this embodiment, the guide pipe 525 of the water outlet joint is arranged above the liquid discharging joint 524. The water outlet of the guide pipe 525 passes through the liquid discharging joint 524 under the action of the water flow gravity, which can dilute the detergent discharged by the liquid discharging joint 524, thereby preventing the liquid discharging joint 524 from being blocked when the detergent dries or the viscosity is too large. For example, the outlet of the guide pipe 525 can be partially or entirely directed towards the liquid discharging joint 524, which can directly flush the liquid discharging joint 524 under a certain water pressure, thereby improving the anti-blocking effect. For example, the inside of the liquid discharging joint 524 can also be provided with a plurality of liquid discharging flow channels. Specifically, a perforated plate can be arranged in the liquid discharging joint 524 to divide the inside of the liquid discharging joint 524 into a plurality of liquid discharging flow channels.

[0180] Exemplarily, when the connecting joint comprises the water outlet joint 522, the inside of the mixing box can further be provided with a guide plate, the extension direction of the guide plate is substantially perpendicular to the bottom of the mixing box 5, the projection of the guide plate on the side wall of the mixing box at least partially overlaps the projection of the water outlet joint on the side wall of the mixing box, and the distance between the guide plate and the water outlet joint is less than the fourth distance threshold. That is, the guide plate extends towards the bottom of the mixing box 5, the guide plate is oppositely arranged relative to the water outlet joint 522 and there is a certain interval between the two, and the water flow flowing out of the water outlet joint 522 impacts on the guide plate and is guided by the guide plate to the detergent mixing area 53 at the bottom of the mixing box 5. Exemplarily, the guide plate can be arranged on the side of the mixing box 5 where the installation position of the detergent dispensing device is arranged, and located in the inner cavity surrounded by the mixing box 5. In this way, the guide plate 525 is used to make the water sprayed by the water outlet joint discharge towards the detergent mixing area 53 at the bottom of the mixing box 5, so as to splash the detergent discharged by the liquid outlet joint to the detergent mixing area 53 at the bottom of the mixing box 5 towards the washing cavity, thereby reducing the residue of the detergent in the mixing box 5. At the same time, the water splashed can prevent the water from generating a pushing force towards the installation opening 51 of the liquid storage box 4.

[0181] Exemplarily, the connecting joint is located at the bottom of the side wall of the mixing box, so that the detergent dispensing device is installed at the bottom of the side of the mixing box, and the body of the detergent dispensing device is lower than the liquid storage box 4, thereby facilitating the natural flow of the detergent in the liquid storage box 4 into the liquid outlet chamber 112 when the liquid supplement port 14 is not blocked by the piston 21.

[0182] In some embodiments, the bottom of the mixing box 5 is provided with a detergent mixing area 53, and the detergent mixing area 53 is used to accommodate the detergent injected into the mixing box 5 by the liquid outlet port 13.

[0183] In this embodiment, the detergent mixing area 53 serves as the first position contacted by the detergent flowing out of the liquid outlet joint 524, and the detergent mixing area 53 can provide a calibration area for intelligentization. According to different types of the mixing box, a limiting member can be arranged in the detergent mixing area 53 to prevent the detergent from flowing into other areas outside the detergent mixing area 53, but the main discharge port of the mixing box 5 (i.e., the outlet arranged on the mixing box and used to discharge the detergent in the mixing box to the washing cavity of the household appliance) needs to be arranged in the detergent mixing area 53.

[0184] In some embodiments, the detergent mixing area 53 is provided with a plurality of guide grooves, and the guide grooves slope over from the liquid outlet port 13 to the main discharge port of the mixing box 5.

[0185] For example, the liquid supplement connector 521 and the liquid storage box 4 are in fluid communication through the liquid supply passage 520. The liquid supply passage 520 can be provided with a switch valve. When the liquid storage box 4 is pulled out of the mixing box 5 by the liquid storage box mounting port 51, the switch valve is closed, and the liquid supply passage 520 is in a closed state, so that the detergent cannot flow out of the liquid storage box 4. When the liquid storage box 4 is pushed into the mixing box 5 by the liquid storage box mounting port 51, the switch valve is opened, and the liquid supply passage 520 is in an open state, so that the detergent can flow out of the liquid storage box 4.

[0186] For example, the opposite side of the mixing box 5 and the liquid storage box 4 can be provided with a hollow protruding structure. The hollow part of the protruding structure is in communication with the liquid supplement connector, serving as the first part of the liquid supply passage 520. The second part of the liquid supply passage 520 is provided on the liquid storage box. The first part of the liquid supply passage 520 can be plugged into the second part of the liquid supply passage 520. For example, the switch valve can be an umbrella valve, a cross valve or a spring piston structure. The switch valve is arranged in the second part of the liquid supply passage 520. When the liquid storage box 4 is located in the mixing box 5, the protruding structure of the mixing box 5 is inserted into the second part of the liquid supply passage 520, and the switch valve is opened. When the liquid storage box 4 is not located in the mixing box 5, the protruding structure of the mixing box 5 is no longer inserted into the second part of the liquid supply passage 520, and the switch valve is closed.

[0187] For example, the height of the liquid storage box is higher than the height of the liquid supplement port, so that the liquid can be supplemented by gravity.

[0188] In a third aspect of the present disclosure, a household appliance is provided, which comprises the detergent box provided in the second aspect of the present disclosure. The household appliance in the third aspect of the present disclosure includes a washing machine, a dishwasher and the like.

[0189] In the present disclosure, the terms "first", "second", "third" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance; the term "multiple" refers to two or more, unless otherwise explicitly limited. The terms "mounting", "connection", "connection", "fixing" and the like should be understood in a broad sense, for example, "connection" can be fixed connection, or detachable connection, or integrally connected; "connection" can be direct connection, or indirect connection through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in the present disclosure can be understood according to the specific circumstances.

[0190] In the description of the present disclosure, it should be understood that the terms "upper", "lower", "left", "right", "front", "back" and the like indicate the orientation or positional relationship shown in the drawings, and are only used for the purpose of facilitating the description of the present disclosure and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or units referred to must have a particular direction, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present disclosure.

[0191] In the description of the specification, the description of the terms "one embodiment", "some embodiments", "certain embodiments", and the like is intended to indicate that the described implementation, feature, structure, material or characteristic is included in at least one embodiment or example of the present disclosure. The illustrative representations of the above terms in the specification are not necessarily referring to the same embodiment or example. Moreover, the described implementation, feature, structure, material or characteristic can be combined in any one or more embodiments or examples in a suitable manner.

[0192] The above only is the preferred embodiment of the present disclosure, and is not intended to limit the present disclosure. The present disclosure can have various modifications and changes for those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present disclosure shall be included in the protection scope of the present disclosure.

Claims

1. A detergent dispensing device, characterized by, The device comprises a body, a piston and a reset member, the body has a containing chamber, the containing chamber is provided with a water inlet port and a liquid outlet port, at least one liquid supplement port is arranged on the side wall of the containing chamber, the piston and the reset member are arranged in the containing chamber, wherein, The containing chamber has a water inlet end and a liquid outlet end, the piston and the water inlet end define a water inlet chamber, the piston and the liquid outlet end define a liquid outlet chamber; the water inlet port is arranged on one side of the water inlet end, the water inlet port communicates with the water inlet chamber and is isolated from the liquid outlet chamber; the liquid outlet port is arranged on one side of the liquid outlet end, the liquid outlet port communicates with the liquid outlet chamber and is isolated from the water inlet chamber; The piston moves between the first position and the second position in the containing chamber to make the liquid supplement port communicate with or be blocked by the piston and the liquid outlet chamber, and the volume of the water inlet chamber and the liquid outlet chamber changes; When the liquid supplement port communicates with the liquid outlet chamber and the liquid outlet chamber is not completely filled with the detergent, the detergent stored in the liquid storage box enters the liquid outlet chamber through the liquid supplement port; when the liquid supplement port is blocked by the piston and the volume of the liquid outlet chamber decreases, the detergent flows out of the liquid outlet chamber through the liquid outlet port to realize the release of the detergent; The reset member and the water pressure of the water inlet port provide the force for the reciprocating action of the piston, and the liquid storage box is higher than the body.

2. The detergent release device according to claim 1, wherein, The side wall of the containing chamber is further provided with a water outlet port; the piston reciprocates between the first position and the second position in the containing chamber to make the water outlet port communicate with or be blocked by the piston; the liquid outlet port and the water outlet port both communicate with the mixing box, the detergent flows out of the liquid outlet chamber through the liquid outlet port and enters the mixing box; when the water outlet port communicates with the water inlet chamber, the water in the water inlet chamber flows out of the water inlet chamber through the water outlet port and enters the mixing box.

3. The detergent release device according to claim 2, wherein, The piston has a piston front end and a piston rear end; When the piston is in the second position, the distance between the liquid supplement port and the piston front end is less than a first distance threshold; and / or, when the piston is in the first position, the distance between the water outlet port and the piston rear end is less than a second distance threshold.

4. The detergent dispensing device according to claim 3, characterized by At least one of the following is included: The side wall of the containing chamber is further provided with a pressure relief port, the pressure relief port communicates with the mixing box, the piston reciprocates between the first position and the second position in the containing chamber to make the pressure relief port communicate with or be blocked by the piston; the difference between the distance between the pressure relief port and the liquid outlet port and the distance between the liquid supplement port and the liquid outlet port is less than a third distance threshold. The water inlet port is provided with a water inlet valve upstream, the detergent adding device further comprises a backwater port arranged between the water inlet port and the water inlet valve, and the backwater port is communicated with the mixing box; when the water inlet valve is closed and the water inlet chamber is reduced, the water in the water inlet chamber flows out of the water inlet chamber through the backwater port and enters the mixing box; The side wall of the accommodating chamber is further provided with a cleaning port, and the piston reciprocates between the first position and the second position in the accommodating chamber to communicate or block the cleaning port with the liquid discharge chamber; the distance between the cleaning port and the liquid discharge port is less than the distance between the liquid supplement port and the liquid discharge port.

5. A detergent dispensing device according to any one of claims 2-4, characterized in that The detergent adding device further comprises a pipeline assembly, and the pipeline assembly comprises a liquid supplement pipe communicated with the liquid supplement port and the mixing box and a water outlet pipe communicated with the water outlet port and the mixing box.

6. The detergent dispensing apparatus according to claim 5, characterized by The pipeline assembly satisfies at least one of the following conditions: The backwater pipe has a smaller pipe diameter than the water outlet pipe; The liquid supplement pipe has a larger pipe diameter than the water outlet pipe; One end of the pressure relief pipe communicated with the mixing box is higher than one end of the water outlet pipe communicated with the mixing box; One end of the pressure relief pipe communicated with the mixing box is higher than one end of the liquid discharge pipe communicated with the mixing box; 7. The detergent dispensing device according to claim 6, characterized by One end of the pressure relief pipe communicated with the mixing box is higher than one end of the liquid supplement pipe communicated with the mixing box; The water inlet pipe is arranged as a Venturi tube. The water inlet port is provided with a water inlet valve upstream, the detergent adding device further comprises a backwater port arranged between the water inlet port and the water inlet valve, and the backwater port is communicated with the mixing box; when the water inlet valve is closed and the water inlet chamber is reduced, the water in the water inlet chamber flows out of the water inlet chamber through the backwater port and enters the mixing box; The side wall of the accommodating chamber is further provided with a cleaning port, and the piston reciprocates between the first position and the second position in the accommodating chamber to communicate or block the cleaning port with the liquid discharge chamber; the distance between the cleaning port and the liquid discharge port is less than the distance between the liquid supplement port and the liquid discharge port. The detergent adding device further comprises a pipeline assembly, and the pipeline assembly comprises a liquid supplement pipe communicated with the liquid supplement port and the mixing box and a water outlet pipe communicated with the water outlet port and the mixing box. The pipeline assembly satisfies at least one of the following conditions: The backwater pipe has a smaller pipe diameter than the water outlet pipe; The liquid supplement pipe has a larger pipe diameter than the water outlet pipe; One end of the pressure relief pipe communicated with the mixing box is higher than one end of the water outlet pipe communicated with the mixing box; One end of the pressure relief pipe communicated with the mixing box is higher than one end of the liquid discharge pipe communicated with the mixing box; One end of the pressure relief pipe communicated with the mixing box is higher than one end of the liquid supplement pipe communicated with the mixing box; The water inlet pipe is arranged as a Venturi tube.

8. The detergent dispensing apparatus according to claim 6, characterized by The water inlet ports are provided in plurality, the water inlet pipe comprises a water inlet main pipe and a plurality of water inlet branch pipes, the plurality of water inlet branch pipes are connected to the water inlet main pipe, and the plurality of water inlet branch pipes are respectively connected to the plurality of water inlet ports.

9. The detergent dispensing apparatus according to claim 1, characterized by The interior of the piston is provided with a liquid containing space, the liquid containing space is communicated with the water inlet chamber through a liquid inlet, The liquid inlet is arranged on the side of the piston facing the water inlet port, and / or the central axis of the liquid inlet and the central axis of the water inlet port are not collinear.

10. The detergent dispensing apparatus according to claim 1, characterized by The detergent dispenser further comprises a plurality of liquid outlet flow channels connected to the liquid outlet port, the liquid outlet flow channels are arranged in an array from the center to the periphery of the liquid outlet port, and the detergent dispenser dispenses detergent to the mixing box through the liquid outlet port and the liquid outlet flow channels.

11. A detergent box characterized by comprising: The detergent dispenser comprises a mixing box, a liquid storage box, and any one of the detergent dispensers in claims 1-10, the mixing box is provided with a liquid storage box mounting port, the liquid storage box enters or exits the interior of the mixing box through the liquid storage box mounting port, the side of the mixing box opposite to the liquid storage box mounting port has at least one dispenser mounting position, the dispenser mounting position is provided with a plurality of connection joints, the connection joints communicate the exterior and the interior of the mixing box, and the connection joints comprise a liquid supplementing joint communicating with the liquid supplementing port and a liquid discharging joint communicating with the liquid discharging port.

12. The detergent pod of claim 11, wherein, The connection joints further comprise at least one of: a water outlet joint, the side wall of the accommodation chamber is further provided with a water outlet port, and the water outlet joint communicates with the water outlet port; one side of the water outlet joint in the interior of the mixing box is provided with a guide pipe, the outlet of the guide pipe faces the bottom of the mixing box; or the interior of the mixing box is provided with a guide plate, the extension direction of the guide plate is substantially perpendicular to the bottom of the mixing box, the projection of the guide plate on the side wall of the mixing box at least partially overlaps the projection of the water outlet joint on the side wall of the mixing box, and the distance between the guide plate and the water outlet joint is less than a fourth distance threshold; a pressure relief joint, the side wall of the accommodation chamber is further provided with a pressure relief port, the pressure relief joint communicates with the pressure relief port, and the pressure relief joint is higher than the water outlet joint, the liquid supplementing joint, and the liquid discharging joint.

13. The detergent pod of claim 11, wherein, The connection joints are located at the bottom of the side wall of the mixing box.

14. The detergent pod of claim 11, wherein, The liquid supplementing joint and the liquid storage box are in fluid communication through a liquid supply channel, the liquid supply channel is provided with a switch valve; when the liquid storage box is located outside the mixing box, the switch valve is closed, and the liquid supply channel is in a closed state; when the liquid storage box is located in the mixing box, the switch valve is opened, and the liquid supply channel is in an open state.

15. A household appliance characterized in that, The detergent box comprises any one of claims 11-14.

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