Detergent dispensing device and washing machine

Abstract

The present invention provides a detergent dispensing device and a washing machine, the detergent dispensing device comprises a water-controlled reversing valve, the water-controlled reversing valve comprises a water inlet end and a water outlet end, the water inlet end of the water-controlled reversing valve is connected to the water inlet valve, a connecting pipeline is arranged between the water inlet end and the water outlet end, a valve core device is arranged inside the connecting pipeline, and the valve core device inside the water-controlled reversing valve adjusts the opening and closing of the water outlet end according to the water inlet state and the water pressure. The detergent dispensing device of the present invention, through the water-controlled reversing valve, adjusts the on-off of different water inlet pipe ports in the reversing valve, so that different water inlet pipe ports are inflowed, thereby changing the blocking position of the reversing valve plug in the valve core device, adjusting the water outlet state of the water outlet end, and making different water outlets discharge water.

Description

Technical Field

[0001] The present invention relates to the technical field of household appliances, and in particular to a detergent dispensing device and a washing machine. Background Art

[0002] At present, all washing machine manufacturers have launched washing machines with automatic dispensing functions. This type of washing machine can realize the intelligent addition of detergent, avoiding users from adding detergent manually, which is more convenient and has a good user experience. With the advancement of science and technology and the improvement of washing machine functions, users have higher and higher requirements for automatic detergent dispensing technology for washing machines. The detergent dispensing device in the related technology generally adopts piston pumps, centrifugal pumps, peristaltic pumps and solenoid valves to directly dispense detergent into the water tub, but the detergent and water mixed in this way are poor, which not only affects the washing performance, but also damages the clothes due to direct contact between the detergent and the clothes. In addition, the structure of this type of detergent dispensing device is complex and the cost is relatively high.

[0003] Currently, various detergent dispensing devices generally consist of three parts: a detergent storage box, a water inlet box, and a dispensing device. The detergent stored in the detergent storage box is dispensed into the water inlet box through the dispensing device and flows into the washing tub for washing the user's clothes. This device is relatively complex, high in cost, complex in assembly, and has high requirements for process and component precision. Summary of the invention

[0004] In view of this, the present invention now provides a water-controlled reversing valve, a detergent dispensing device and a washing machine. By improving the water inlet method and combining a double Venturi tube negative pressure automatic dispensing component, the dispensing structure is simplified, the coordination of parts is reduced, and the reliability and stability of parts are improved, thereby realizing a dispensing method with multiple functions such as single dispensing and multiple dispensing of liquid.

[0005] To achieve the above object, the technical solution of the present invention is achieved as follows:

[0006] A water-controlled reversing valve comprises a water inlet end and a water outlet end, wherein the water inlet end comprises at least two water inlet pipe openings, and the water outlet end comprises at least two water outlets. A connecting pipeline is arranged between the water inlet end and the water outlet end, and a valve core device is arranged inside the connecting pipeline. The valve core device inside the water-controlled reversing valve adjusts the opening and closing state of the water outlet according to the water inlet state of the water inlet gate and the water pressure.

[0007] The arrangement improves the water inlet structure so that the water outlet states of different water outlet pipes can be changed through one water inlet valve, and has a simple structure and is practical and reliable.

[0008] Furthermore, the water-controlled reversing valve includes a reversing valve housing and a reversing valve cover, one end of the reversing valve housing is connected to the three-way valve, the three-way valve has three ports, one of which is connected to water inlet port one, another is connected to water outlet port one, and the third is fixedly connected to the reversing valve housing through a guide hole, the reversing valve housing is provided with water inlet port two and water outlet port two, and the reversing valve cover is provided with water outlet port three, the reversing valve core passes through the guide hole, one end of the reversing valve core is connected to a membrane valve disc, the membrane valve disc is arranged at one end of the three-way valve, a reversing valve plug is arranged at one end of the reversing valve core, and the reversing valve plug is arranged in the reversing valve housing, the membrane valve disc can drive the reversing valve core and the reversing valve plug to move upward to block the water outlet three when water enters the three-way valve, and the membrane valve disc can drive the reversing valve core and the reversing valve plug to move downward to block the water outlet two when there is no water in the three-way valve.

[0009] The setting discloses the specific structure of a water-controlled reversing valve, which has a compact structure and can realize the change of the water outlet state of the three water outlets under different water inlet conditions.

[0010] The present invention also discloses a detergent dispensing device, comprising the water-controlled reversing valve as described above, wherein the water-controlled reversing valve is connected to a water inlet valve, and the water inlet valve comprises two outlets, wherein a first outlet is connected to a water inlet port 1 of the water-controlled reversing valve via a first connecting pipe, and a second outlet is connected to a water inlet port 2 of the water-controlled reversing valve via a second connecting pipe; water outlet 1 and water outlet 3 on the water-controlled reversing valve are respectively connected to a first water inlet port on a first venturi tube structure and a second water inlet port on a second venturi tube structure, and water outlet 2 on the water-controlled reversing valve is connected to a washing bucket and / or a dispensing cavity.

[0011] This setting combines a water-controlled reversing valve with a double venturi tube negative pressure automatic delivery component to achieve a working condition in which water can be supplied to two venturi tube structures and a washing tub and / or delivery chamber through one water inlet valve, thereby enabling single or multiple delivery of detergents.

[0012] Furthermore, a first chamber is provided in the delivery chamber, in which delivery liquid is stored, the first chamber is connected to the constant volume chamber through a suction tube, the first venturi tube structure is connected to the constant volume chamber through a first negative pressure tube, and the second venturi tube structure is connected to the constant volume chamber through a second negative pressure tube, and a one-way valve and / or a float valve are provided in the first negative pressure tube, the second negative pressure tube and the suction tube, and by changing the water inlet state of the two venturi tubes, the delivery liquid flows into the constant volume chamber or the delivery liquid in the constant volume chamber is delivered to the delivery chamber.

[0013] This setting completes the absorption and delivery of liquid items through double negative pressure, has a reasonable structure and precise control, greatly simplifies the control structure of automatic detergent delivery, and reduces production costs.

[0014] Furthermore, a chamber assembly is provided in the delivery chamber, the chamber assembly is connected to the constant volume chamber through a suction pipe, the chamber assembly includes at least two chambers, delivery liquid can be placed in each chamber, a reversing valve is provided on the suction pipe, the reversing valve is connected to the chamber in the chamber assembly through a suction pipeline, the first venturi tube structure is connected to the constant volume chamber through a first negative pressure tube, the second venturi tube structure is connected to the constant volume chamber through a second negative pressure tube, a one-way valve and / or a float valve are provided in the first negative pressure tube, the second negative pressure tube and the suction pipe, and the delivery liquid flows into the constant volume chamber or the delivery liquid in the constant volume chamber is delivered to the delivery chamber by changing the water inlet state of the two venturi tubes.

[0015] This setting completes the absorption and delivery of multiple liquid products through double negative pressure, has a reasonable structure and precise control, greatly simplifies the control structure of automatic detergent delivery, and reduces production costs.

[0016] Furthermore, the constant volume chamber is connected to a constant volume chamber cleaning device, and the constant volume chamber cleaning device is used to clean the constant volume chamber when the liquid in the constant volume chamber is discharged.

[0017] By providing a constant volume cavity cleaning device, the constant volume cavity can be flushed in time to avoid inaccurate volume determination of the constant volume cavity or influence on the suction or discharge of the liquid put into the constant volume cavity.

[0018] Furthermore, the constant volume chamber cleaning device includes an overflow box, and / or a first connecting pipe, and / or a second connecting pipe; wherein the overflow box is connected to the first venturi tube structure, and the first venturi tube structure is connected to the constant volume chamber; one end of the first connecting pipe is connected to the water outlet end of the second venturi tube structure, and the other end of the first connecting pipe is connected to the constant volume chamber; one end of the second connecting pipe is connected to the water inlet end of the second venturi tube structure, and the other end of the second connecting pipe is connected to the constant volume chamber.

[0019] This arrangement ensures that when the second venturi tube structure starts to work, the liquid in the constant volume chamber begins to be discharged, and water can be introduced into the constant volume chamber for flushing through the overflow box, and / or the first connecting pipe, and / or the second connecting pipe, and some water is introduced into the constant volume chamber again, and then enters the second venturi tube structure from the second negative pressure pipe port for discharge. When the water intake of the second venturi tube structure is stopped, a siphon effect is generated due to the long drainage pipe, and finally all the liquid in the constant volume chamber is discharged, so as to prepare for the next work and ensure the reliability of flushing.

[0020] The present invention also provides another detergent dispensing device, wherein the two or more water outlets at the water outlet end of the water-controlled reversing valve are separately connected to different chambers on the dispensing chamber, and the chambers on the dispensing chamber are used to store any one, two or more of washing powder, detergent, softener and disinfectant.

[0021] Furthermore, the three chambers on the delivery chamber are respectively the first product chamber, the second product chamber, and the third product chamber. The water outlet 1 of the water-controlled reversing valve is connected to the first product chamber through the third connecting pipe, the water outlet 2 is connected to the second product chamber through the fourth connecting pipe, and the water outlet 3 is connected to the third product chamber through the fifth connecting pipe.

[0022] This setting completes the structure of dispensing three types of washing products through double negative pressure. It has a reasonable structure and precise control, which greatly simplifies the control structure of automatic detergent dispensing and reduces production costs.

[0023] Compared with the prior art, the water-controlled reversing valve, detergent dispensing device and washing machine of the present invention have the following advantages: one or more washing machine dispensing can be achieved by improving the water inlet structure and the dispensing structure; a double-Venturi negative pressure automatic dispensing component is formed by setting a water-controlled reversing valve and two Venturi tube structures; the absorption and dispensing of the dispensing liquid are completed in the form of double negative pressure, the dispensing structure is simplified, the coordination of parts is reduced, the reliability and stability of parts are improved, and the production cost is reduced.

[0024] Another object of the present invention is to provide a washing machine comprising the detergent dispensing device as described above. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings:

[0026] Figure 1 This is a schematic diagram of the structure of the detergent dispensing device according to an embodiment of the present invention;

[0027] Figure 2 This is a water inlet state diagram of the first water inlet pipe in the detergent dispensing device according to an embodiment of the present invention;

[0028] Figure 3 This is a diagram showing the water inlet state of the second water inlet pipe in the detergent dispensing device according to an embodiment of the present invention;

[0029] Figure 4 A reference diagram of the first relative position setting of the overflow box in the detergent dispensing device according to the embodiment of the present invention when water flows into the constant volume chamber;

[0030] Figure 5A reference diagram for the second relative position setting of the overflow box in the detergent dispensing device according to an embodiment of the present invention when water flows into the constant volume chamber;

[0031] Figure 6 A schematic side view of another detergent dispensing device according to an embodiment of the present invention;

[0032] Figure 7 A schematic side view of the structure of the detergent dispensing device according to an embodiment of the present invention;

[0033] Figure 8 A schematic diagram of the structure of the detergent dispensing device according to an embodiment of the present invention without the top cover plate;

[0034] Fig. 9 for Figure 8 A schematic diagram of the structure from above;

[0035] Fig.10 for Fig. 9 Schematic diagram of the cross-sectional structure of AA;

[0036] Fig.11 for Fig. 9 Schematic diagram of the cross-sectional structure of the middle BB;

[0037] Fig.12 for Figure 8 The side view of the middle structure after removing the drawer box base;

[0038] Fig.13 The water control reversing valve and the washing machine water inlet box state 1 used therein in embodiment 4 of the present invention;

[0039] Fig.14 The water control reversing valve and the washing machine water inlet box state 2 used therein in embodiment 4 of the present invention;

[0040] Fig.15 It is a schematic diagram of the principle of double negative pressure single-shot automatic delivery when a water-controlled reversing valve is used in Example 4 of the present invention;

[0041] Fig.16 It is a schematic diagram of the principle of double negative pressure multi-drop automatic delivery when a water-controlled reversing valve is applied in Example 4 of the present invention;

[0042] Description of reference numerals:

[0043] 1. First venturi tube structure; 2. First negative pressure tube; 3. Float valve; 4. Constant volume chamber; 5. Suction check valve; 6. Suction tube; 7. Discharge check valve; 8. Second negative pressure tube; 9. Second water inlet; 10. Second venturi tube structure; 11. Second water outlet; 12. Long drain pipe; 13. Delivery chamber; 14. First chamber; 15. Main drain pipe; 16. Second chamber; 17. Leakage port; 18. Overflow box; 19. Overflow pipe; 20. First water outlet; 21. First water inlet; 22. Water inlet valve; 23. Top cover; 24. Shell; 25. Front plate; 26. Handle; 27. Detergent cover; 28. Drawer box cover; 29. ​​Drawer box base; 30. Switch valve; 3 1. The first liquid suction pipeline; 32. The second liquid suction pipeline; 33. The third chamber; 34. The first connecting pipe; 35. The second connecting pipe; 36. The micro one-way valve; 101. The first water inlet; 102. The three-way valve; 103. The first water outlet; 104. The membrane valve plate; 105. The second water outlet; 106. The reversing valve shell; 107. The reversing valve core; 108. The reversing valve plug; 109. The third water outlet; 110. The reversing valve cover; 111. The second water inlet; 112. The guide hole; 202. The first connecting pipe; 203. The second connecting pipe; 204. The third connecting pipe; 205. The fourth connecting pipe; 206. The fifth connecting pipe; 301. The first product chamber; 302. The second product chamber; 303. The third product chamber. DETAILED DESCRIPTION

[0044] In order to make the technical means, objectives and effects of the present invention easy to understand, the embodiments of the present invention are described in detail below with reference to specific drawings.

[0045] It should be noted that all the terms used in the present invention for directional and positional indications, such as "up", "down", "left", "right", "front", "back", "vertical", "horizontal", "inside", "outside", "top", "low", "lateral", "longitudinal", "center", etc., are only used to explain the relative positional relationship and connection status between the components in a certain state (as shown in the accompanying drawings), and are only for the convenience of describing the present invention, rather than requiring the present invention to be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the descriptions of "first", "second", etc. in the present invention are only used for descriptive purposes, and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of the indicated technical features.

[0046] In the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0047] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0048] Embodiment 1, as Figures 1 to 5 As shown, the present invention discloses a detergent dispensing device, including a dispensing cavity 13, in which a first chamber 14 is arranged, in which dispensing liquid is stored, and the first chamber 14 is connected with a constant volume cavity 4 through a liquid suction pipe 6, and the constant volume cavity 4 is connected with a water inlet valve 22 through two venturi tube structures, and the negative pressure pipes of the two venturi tube structures are connected with the constant volume cavity 4, and a one-way valve and / or a float valve are arranged in the two negative pressure pipes and the liquid suction pipe 6, and by changing the water inlet state of the two venturi tubes, the dispensing liquid flows into the constant volume cavity 4 or the dispensing liquid in the constant volume cavity 4 is dispensed into the dispensing cavity 13.

[0049] As an example of the present invention, the delivery cavity 13 can be a drawer box cavity or a cavity integrated on the washing machine. The two Venturi tube structures are respectively a first Venturi tube structure 1 and a second Venturi tube structure 10. The first Venturi tube structure 1 is connected to the constant volume cavity 4 through a first negative pressure tube 2, and the second Venturi tube structure 10 is connected to the constant volume cavity 4 through a second negative pressure tube 8. The first Venturi tube structure 1 is connected to the water inlet valve 22 through a first water inlet pipe port 21, and the second Venturi tube structure 10 is connected to the water inlet valve 22 through a second water inlet pipe port 9. The water inlet valve 22 can supply water to the second water inlet pipe port 9 and the first water inlet pipe port 21 separately and / or simultaneously.

[0050] The structure works as follows:

[0051] Water enters the first water inlet 21 and enters the first venturi tube structure 1. The first negative pressure tube 2 generates negative pressure, the float valve 3 in the first negative pressure tube 2 opens, the discharge check valve 7 in the second negative pressure tube 8 closes, and the suction check valve 5 in the suction tube 6 opens, and the liquid to be put in is sucked from the first chamber 14 and enters the constant volume chamber 4. When the fixed volume chamber 4 is filled with the put in liquid, or the fixed volume chamber 4 absorbs a fixed amount of put in liquid, the float valve in the suction tube 6 is closed. At this time, the first water inlet 21 continues to take in water, but only water, and the put in liquid no longer enters the constant volume chamber 4.

[0052] Close the water inlet of the first water inlet pipe 21, open the second water inlet pipe 9 to let in water, the second venturi tube structure 10 starts to work, the discharge one-way valve 7 in the second negative pressure tube 8 is opened, and the suction one-way valve 5 in the suction pipe 6 is closed, and the delivery liquid in the constant volume chamber 4 is sucked into the second venturi tube structure 10, and then enters the delivery chamber 13 with the water inlet from the second water inlet pipe 9.

[0053] The present invention forms a double-Venturi negative pressure automatic delivery component by arranging two Venturi tube structures, and completes the absorption and delivery of delivery liquid in the form of double negative pressure. It has a reasonable structure and precise control, which greatly simplifies the control structure of automatic detergent delivery and reduces production costs.

[0054] Preferably, as a preferred example of the present invention, the density of the float in the float valve 3 is less than the density of the liquid placed in the constant volume chamber 4, and the density of the float in the liquid suction check valve 5 is greater than the density of the liquid placed in the constant volume chamber 4. This setting ensures the reliability of the double venturi negative pressure tube in extracting the liquid when a negative pressure is formed in the constant volume chamber, and the relative setting of the float density and the density of the liquid placed can achieve the fixed volume of the liquid placed, which is accurate and reliable.

[0055] During operation, water enters the first water inlet pipe 21 and enters the first venturi tube structure 1. The first negative pressure pipe 2 generates negative pressure, and negative pressure is also generated in the constant volume chamber 4 connected thereto. The float of the liquid suction one-way valve 5 becomes loose, and the liquid suction one-way valve 5 is in an open state. The liquid suction pipe 6 sucks the liquid in the first chamber 14 into the constant volume chamber 4 through the liquid suction one-way valve 5. As the liquid in the constant volume chamber 4 is sucked, the liquid can float the float in the float valve 3. When the capacity in the constant volume chamber 4 reaches the preset capacity, for example, after a period of time T, the time T is a preset time range, such as 3s to 20s, which is set as needed, the float in the float valve 3 closes the float valve 3.

[0056] Then, the first water inlet pipe 21 is closed, and the second water inlet pipe 9 starts to let in water. The second negative pressure pipe 8 in the second venturi tube structure 10 generates negative pressure. At this time, the float in the discharge one-way valve 7 will become loose to a certain extent, and the detergent in the constant volume chamber 4 will flow to the delivery chamber 13 through the discharge one-way valve 7.

[0057] Preferably, the density of the float in the discharge check valve 7 is greater than the density of the liquid put into the constant volume chamber. This arrangement enables the discharge check valve to close the second negative pressure tube when the second negative pressure tube does not generate negative pressure, further ensuring the accuracy of the liquid drawn into the constant volume chamber.

[0058] Preferably, as a preferred example of the present invention, a second chamber 16 is provided in the delivery cavity 13 , the second chamber 16 is used for delivering washing powder, and a water leakage port 17 is provided at the bottom of the second chamber 16 .

[0059] This arrangement enables the detergent dispensing device of the present invention to automatically dispense washing liquid and washing powder, thus meeting the multifunctional requirements of the detergent dispensing device.

[0060] Preferably, as a preferred example of the present invention, the first venturi tube structure 1 is also connected to an overflow box 18. After water enters the first water inlet pipe 21, it flows to the overflow box 18 through the first water outlet 20. An overflow pipe 19 is arranged on the overflow box 18. The overflow pipe 19 is arranged near the upper part of the overflow box 18 to make excess water in the overflow box 18 flow to the washing bucket or the second chamber 16 or the delivery cavity 13.

[0061] When the second venturi tube structure 10 is working, since the overflow pipe 19 is open, when negative pressure is generated in the constant volume chamber 4, the pressure required to make the water in the overflow box 18 flow to the constant volume chamber 4 is less than the pressure required to make the injected liquid flow to the constant volume chamber 4 through the suction tube 6. Therefore, when the second venturi tube structure 10 is working, the second negative pressure tube 8 generates negative pressure, and the injected liquid flows from the constant volume chamber 4 into the injection chamber 13, and the constant volume chamber 4 generates negative pressure. The water in the overflow box 18 flows back into the first negative pressure tube 2 from the first water outlet 20, and then flows to the constant volume chamber 4 to flush the constant volume chamber.

[0062] Preferably, as a preferred example of the present invention, the second water outlet 11 of the second venturi tube structure 10 is connected to the delivery chamber 13 through a long drainage pipe 12 .

[0063] This arrangement allows the liquid added into the constant volume chamber or the flushing liquid flowing into the constant volume chamber 4 from the overflow box 18 to produce a siphon effect through the second venturi tube structure 10 and the long drain pipe 12, even when the water inlet is stopped, thereby emptying the constant volume chamber 4.

[0064] Preferably, as a preferred example of the present invention, the water inlet of the overflow pipe 19 on the overflow box 18 is not higher than the first water outlet 20 of the overflow box 18, or the height of the first water outlet 20 on the overflow box 18 is higher than the liquid level of the liquid contained in the constant volume chamber 4.

[0065] This arrangement further ensures that the overflow box 18 can store water when the first venturi tube structure 1 is working, and releases water into the constant volume chamber 4 when the liquid in the constant volume chamber 4 is added, thereby ensuring the reliability of the overflow box 18 storing water and flushing the constant volume chamber 4.

[0066] Preferably, as a preferred example of the present invention, a main drainage pipe opening 15 is provided at the bottom of the delivery cavity 13 to facilitate the delivery liquid or water in the delivery cavity 13 to flow to the washing bucket.

[0067] Preferably, as a preferred example of the present invention, the washing liquid stored in the first chamber 14 is any one of liquid detergents such as detergent, softener, cleaning agent, bleach, disinfectant, etc.

[0068] Embodiment 2, as Figure 6 As shown, the present invention discloses another detergent dispensing device, including a dispensing chamber 13, in which a chamber assembly is arranged, the chamber assembly is connected with the constant volume chamber 4 through a suction pipe 6, the chamber assembly includes at least two chambers, and dispensing liquid can be placed in each chamber, a switching valve 30 is arranged on the suction pipe 6, and the switching valve 30 is connected with the chamber in the chamber assembly through a suction pipeline, the constant volume chamber 4 is connected with the water inlet valve 22 through two venturi tube structures, and the negative pressure tubes of the two venturi tube structures are connected with the constant volume chamber 4, and a one-way valve and / or a float valve are arranged in the two negative pressure tubes and the suction pipe 6, and by changing the water inlet state of the two venturi tubes, the dispensing liquid flows into the constant volume chamber 4 or the dispensing liquid in the constant volume chamber 4 is dispensed into the dispensing chamber 13, and other structures are the same as those in Example 1.

[0069] This embodiment discloses a dual-negative-pressure multi-injection automatic detergent dispensing device, which completes the absorption and dispensing of dispensing liquid in the form of dual negative pressure by setting two Venturi tube structures, and by setting a chamber assembly including at least two chambers, the switching valve 30 on the liquid suction tube 6 is adjusted according to the dispensing needs, so that different dispensing liquids can be absorbed. The structure is reasonable and the control is precise, which greatly simplifies the control structure of automatic detergent dispensing and reduces the production cost.

[0070] Preferably, as a preferred example of the present invention, the switching valve 30 can be a three-way valve, a four-way valve or any multi-way valve, and can also be connected in series or in parallel through multiple connecting valves to realize the extraction of multiple injection liquids.

[0071] This configuration further improves the applicability of the present invention.

[0072] Preferably, as a preferred example of the present invention, the switching valve 30 is connected to different chambers of the chamber assembly through separate suction lines. As an example of the present invention, the chamber assembly includes a first chamber 14 and a third chamber 33, and the suction pipe 6 includes two pipes extending into the first chamber 14 and the third chamber 33, respectively, which are a first suction pipe 31 and a second suction pipe 32, and the switching valve 30 is arranged at the connection between the first suction pipe 31 and the second suction pipe 32, so as to achieve the purpose of sucking two different liquids (such as softener and softener) into the constant volume chamber 4 respectively.

[0073] Preferably, as a preferred example of the present invention, the constant volume chamber 4 is connected to a constant volume chamber cleaning device, and the constant volume chamber cleaning device is used to clean the constant volume chamber 4 when the liquid in the constant volume chamber 4 is discharged. As an example of the present invention, the constant volume chamber cleaning device includes an overflow box 18, the setting structure of the overflow box 18 is the same as the structure in Example 1, and / or, a first connecting pipe 34 led out from the water outlet end of the second venturi tube structure 10, the other end of the first connecting pipe 34 is connected to the constant volume chamber 4, and / or, a second connecting pipe 35 led out from the water inlet end of the second venturi tube structure 10, the other end of the second connecting pipe 35 is connected to the constant volume chamber 4.

[0074] The first connecting pipe 34 and / or the second connecting pipe 35 and / or the overflow box 18 are provided, and the main function is to fully clean the constant volume chamber 4. When the second water inlet pipe port 9 of the second venturi tube structure 10 starts to take in water, the venturi tube generates negative pressure to absorb the liquid previously sucked into the constant volume chamber 4, such as detergent or softener. At the same time, the first connecting pipe 34 and / or the second connecting pipe 35 and / or the overflow box 18 introduce part of the water to enter the constant volume chamber 4 again, and then enter the second venturi tube structure 10 from the second negative pressure pipe port to be discharged. When the water inlet of the second venturi tube structure is stopped, a siphon effect is generated due to the long drainage pipe 12, and finally all the liquid in the constant volume chamber is discharged to prepare for the next work.

[0075] Preferably, as a preferred example of the present invention, the diameter of the first connecting pipe 34 is smaller than the diameter of the water outlet end of the second venturi tube structure 10; the diameter of the second connecting pipe 35 is smaller than the diameter of the water inlet end of the second venturi tube structure 10.

[0076] This arrangement ensures that when the second venturi tube structure 10 is in the water-intake state, the main water flow still flows through the long drainage pipe 12 to the delivery chamber 13, ensuring the normal operation of the second venturi tube structure 10 to suck out the delivery liquid in the constant volume chamber 4. At the same time, by providing a first connecting pipe 34 and / or a second connecting pipe 35 with a smaller diameter, part of the water flow of the second venturi tube structure 10 can flow to the constant volume chamber 4 when water is inletted, thereby completing the cleaning of the constant volume chamber 4.

[0077] Preferably, as a preferred example of the present invention, a micro one-way valve 36 is provided between the first connecting pipe 34 and the second connecting pipe 35. When it works, it prevents water from flowing back, and at the same time, after the water inflow is completed, the channel is closed in time, so that the long drainage pipe 12 can produce a siphon function.

[0078] As an example of the present invention, the water inlet passage for cleaning the constant volume chamber 4 may be the overflow box 18 , the first connecting pipe 34 , or the second connecting pipe 35 .

[0079] Since the constant volume chamber 4 is provided for the purpose of constant volume volume of the detergent, the viscosity of the liquid is generally high. If the detergent in the constant volume chamber 4 is not rinsed clean each time, part of the liquid will adhere to the constant volume chamber 4 or the walls of the first venturi tube structure 1, the second venturi tube structure 10, and the pipette 6, resulting in inaccurate constant volume accuracy. In severe cases, part of the liquid will block the connecting ports of the first venturi tube structure 1, the second venturi tube structure 10, and the pipette 6, affecting the liquid to enter or flow out of the constant volume chamber 4.

[0080] Therefore, the present application provides an overflow box 18 connected to the constant volume chamber 4, and / or a first connecting pipe 34, and / or a second connecting pipe 35.

[0081] Preferably, the volume of water entering the constant volume chamber 4 through the first connecting tube 34 and / or the second connecting tube 35 and / or the overflow box 18 is less than or equal to the water flow drawn out of the constant volume chamber 4 through the second negative pressure tube 8 by the second venturi tube structure 10, so that when flushing the constant volume chamber, the flushing liquid level in the constant volume chamber 4 will not be higher than the upper end of the suction tube 6.

[0082] Alternatively, when the volume of water entering the constant volume chamber 4 through the first connecting pipe 34 and / or the second connecting pipe 35 and / or the overflow box 18 is greater than the water flow extracted from the constant volume chamber 4 through the second negative pressure pipe 8 by the second venturi tube structure 10, at this time, the constant volume chamber 4 will be filled with flushing water. Since the density of the float of the liquid suction one-way valve 5 is greater than the density of the liquid put into the constant volume chamber, the liquid suction one-way valve 5 in the liquid suction pipe 6 is blocked, and the flushing water in the constant volume chamber 4 will not enter the first chamber 14. When flushing the constant volume chamber 4, the first inlet of the first venturi tube structure 1 The water pipe port 21 stops taking in water, while the second water inlet pipe port 9 in the second venturi tube structure 10 continues taking in water, and negative pressure continues to be generated in the second negative pressure pipe 8. At this time, the float in the float valve 3 is lifted up to close the float valve 3, and the flushing water in the constant volume chamber 4 can only flow to the delivery chamber 13 through the discharge one-way valve 7, the second negative pressure pipe 8, and the long drain pipe 12, and then flow to the washing bucket. At this time, a siphon structure is formed among the discharge one-way valve 7, the second negative pressure pipe 8, and the long drain pipe 12, which can extract all the flushing water in the constant volume chamber 4 to ensure the flushing effect of the constant volume chamber 4.

[0083] Embodiment 3, as Figures 1 to 12 As shown, the present invention discloses a detergent dispensing device, including a drawer box base 29 and a drawer box cover 28, a dispensing cavity 13 is formed between the drawer box base 29 and the drawer box cover 28, a detergent cover 27 and a top cover 23 are sequentially arranged above the drawer box cover 28, the fixed volume cavity 4 is formed between the top cover 23 and the detergent cover 27, and other structures are the same as those in Example 1.

[0084] Preferably, a front plate 25 is provided at the front end of the drawer box base 29 , and a handle 26 is provided on the front plate 25 .

[0085] This arrangement allows the drawer box assembly to be quickly and conveniently opened or pushed in as needed during use.

[0086] Preferably, a shell 24 is provided on the outer side of the drawer box base 29 , and the shell 24 covers the periphery of the drawer box base 29 and is snap-connected with the detergent cover plate 27 .

[0087] This arrangement avoids deformation of the drawer assembly due to external force during use, thereby improving the reliability of the drawer box assembly during use.

[0088] Preferably, the top cover plate 23 is detachably connected to the detergent cover plate 27 and / or the drawer box cover plate 28 and / or the housing 24. As an example of the present invention, the top cover plate 23 is connected to the detergent cover plate 27 by screws.

[0089] Embodiment 4, the present invention discloses a detergent dispensing device for a washing machine, such as Figures 13-16 As shown, it includes a water-controlled reversing valve, which includes a water inlet end and a water outlet end, the water inlet end includes at least two water inlet pipes, and the water outlet end includes at least two water outlets. The water inlet end of the water-controlled reversing valve is connected to the water inlet valve 22, and a connecting pipeline is arranged between the water inlet end and the water outlet end. A valve core device is arranged inside the connecting pipeline. The valve core device inside the water-controlled reversing valve adjusts the opening and closing state of the water outlet according to the water inlet state of the water inlet gate and the water pressure.

[0090] As an example of the present invention, Fig.13 , 14As shown, the water control reversing valve comprises a reversing valve housing 106 and a reversing valve cover 110. One end of the reversing valve housing 106 is connected to the three-way valve 102. The three-way valve 102 has three ports, one of which is connected to the water inlet port 101, another is connected to the water outlet port 103, and the third is fixedly connected to the reversing valve housing 106 through a guide hole 112. The reversing valve housing 106 has a water inlet port 111 and a water outlet port 105, and the reversing valve cover 110 has a water outlet port 109. The reversing valve core 107 passes through the guide hole 112. One end is connected to the membrane valve plate 104, and the membrane valve plate 104 is arranged at one end of the three-way valve 102. A reversing valve plug 108 is arranged at one end of the reversing valve core 107, and the reversing valve plug 108 is arranged in the reversing valve housing 106. When water enters the three-way valve 102, the membrane valve plate 104 can drive the reversing valve core 107 and the reversing valve plug 108 to move upward to block the water outlet three 109. When there is no water in the three-way valve 102, the membrane valve plate 104 can drive the reversing valve core 107 and the reversing valve plug 108 to move downward to block the water outlet two 105.

[0091] Specifically, Fig.13 As shown, when water enters the water inlet port 101, water flows out from the water outlet 103. The water flow generates pressure in the three-way valve 102, causing the membrane valve plate 104 to generate upward pressure, pushing the reversing valve core 107 and the reversing valve plug 108 integrated therewith to move upward, blocking the passage to the water outlet 3 109, and opening the passage to the water outlet 2 105 at the same time. When water enters the water inlet port 2 111, water flows out from the water outlet 2 105.

[0092] like Fig.14 As shown, when the water inlet port 101 is not flowing in, there is no pressure in the three-way valve 102, and the film valve plate 104 and the reversing valve core 107 and the reversing valve plug 108 integrated therewith move downward under the action of gravity or other pre-compression spring force, blocking the passage to the water outlet 2 105, and opening the passage to the water outlet 3 109 at the same time, when the water inlet port 111 flows in, the water flows out from the water outlet 3 109, realizing the reversing function.

[0093] By means of the water-controlled reversing valve, different water inlet pipes in the reversing valve are adjusted to be on and off, so that water can be taken in from different water inlet pipes, thereby changing the blocking position of the reversing valve plug 108 in the valve core device, adjusting the water outlet state of the water outlet end, and making different water outlets discharge water.

[0094] Preferably, as a preferred example of the present invention, Fig.15As shown, the water inlet valve 22 is a one-inlet and two-outlet valve, and the water inlet valve 22 includes two outlets, wherein the first outlet is connected to the water inlet pipe port 101 of the water control reversing valve through the first connecting pipe 202, and the second outlet is connected to the water inlet pipe port 2 111 of the water control reversing valve through the second connecting pipe 203; the water outlet port 103 and the water outlet port 3 109 on the water control reversing valve are respectively connected to the first water inlet pipe port 21 on the first venturi tube structure 1 and the second water inlet pipe port 9 on the second venturi tube structure 10, and the water outlet port 2 105 on the water control reversing valve is connected to the washing bucket and / or the delivery cavity 13.

[0095] As an example of the present invention, Fig.15 , 16 As shown, the water outlet 103 of the water control reversing valve is connected to the second water inlet 9 of the double venturi negative pressure automatic delivery assembly through the third connecting pipe 204. The water outlet 3 109 of the water control reversing valve is connected to the first water inlet 21 of the double venturi negative pressure automatic delivery assembly through the fifth connecting pipe 206. The water outlet 2 105 of the water control reversing valve is connected to the chamber for single delivery of softener in the delivery chamber 13 through the fourth connecting pipe 205.

[0096] Here’s how it works:

[0097] S1: Only the second port of the water inlet valve 22 is opened, and the water flows into the second water inlet port 111 of the water control reversing valve through the second connecting pipe 203, and then flows from the third water outlet 109 through the fifth connecting pipe 206 and the double-pipe negative pressure automatic delivery to the first water inlet port 21 of the water inlet box, so that the delivery liquid in the first chamber 14 can be sucked into the constant volume chamber 4;

[0098] S2: In the state of S1 above, that is, there is liquid in the constant volume chamber 4. The second way of the water inlet valve 22 is closed, and only the first way is opened, and the water flows through the first connecting pipe 202 to connect with the water inlet port 101 of the water control reversing valve, and then from the water outlet 103 through the third connecting pipe 204 to connect with the second water inlet port 9 of the Shuangwenqiuli negative pressure automatic water inlet box, so as to discharge the liquid in the constant volume chamber 4;

[0099] S3: In the state of S2, the constant volume chamber 4 is empty. The water inlet valve 22 opens only the first path for main water inlet, replenishing the water in the washing tub, and at the same time, flushing the second chamber 16 to complete the one-time delivery of washing powder.

[0100] S4: In the state of S3, the first water inlet pipeline of the water inlet valve 22 has been opened, and the second water inlet pipeline is opened at the same time. According to the working principle of the water control reversing valve, the reversing valve core 107, the membrane valve plate 104 and the reversing valve plug 108 move upward together, closing the water outlet 3 109 of the water control reversing valve, and the water outlet 2 105 is opened at the same time, and the water flow is connected to the chamber for placing the softener through the fourth connecting pipe 205.

[0101] The above S1 occurs when washing starts and detergent is automatically added.

[0102] The above-mentioned S4 occurs during the last rinse cycle and takes care of the clothes.

[0103] The function of the whole machine is that the detergent is stored and automatically dispensed according to the program, while the washing powder and softener are single-dispensed and used once.

[0104] Alternatively, the detergent dispensing device for a washing machine disclosed in the present invention is as follows: Fig.16 As shown, it includes a water inlet valve and a water control reversing valve. The three water outlet ports of the water control reversing valve are separately connected to the three chambers on the delivery cavity 13. The three chambers on the delivery cavity 13 are used to store any one, two or three of detergent products such as washing powder, detergent, softener, disinfectant, etc. The other structures are the same as other embodiments.

[0105] Wherein, the water inlet valve 22 is a one-inlet and two-outlet valve.

[0106] As an example of the present invention, the three chambers on the delivery chamber 13 are respectively the first product chamber 301, the second product chamber 302, and the third product chamber 303. The water outlet 103 of the water-controlled reversing valve is connected to the first product chamber 301 through the third connecting pipe 204, the water outlet 2 105 is connected to the second product chamber 302 through the fourth connecting pipe 205, and the water outlet 3 109 is connected to the third product chamber 303 through the fifth connecting pipe 206.

[0107] The first product chamber 301, the second product chamber 302, and the third product chamber 303 can be respectively loaded with three types of washing supplies such as washing powder, detergent, softener, and disinfectant for single use.

[0108] Here’s how it works:

[0109] S11, only the first port pipeline of the water inlet valve 22 is opened, and water flows through the first connecting pipe 202, the water inlet port 101, the three-way valve 102, the water outlet 103, the third connecting pipe 204, directly to the first product chamber 301, and the washing products in the first product chamber 301 are put in;

[0110] S12, only open the second port pipeline of the water inlet valve 22, then water flows through the second connecting pipe 203, the second water inlet pipe port 111, the third water outlet port 109 of the water control reversing valve, the fifth connecting pipe 206, and enters the third product chamber 303 to put the washing products in the third product chamber 303.

[0111] S13, open the two port pipelines of the water inlet valve 22 at the same time, and the first water flow flows into the first product chamber 301 as described in step 1 above. The second water flow, through the second connecting pipe 203, the second water inlet pipe port 111, the second water outlet port 105 of the water control diverter valve, and the fourth connecting pipe 205, leads to the second product chamber 302, and can flush the second product chamber 302 and put the washing products inside it.

[0112] The washing machine controls the water inlet valve through a program to deliver water to the three product chambers at the appropriate time.

[0113] Among them, the first product chamber 301, the second product chamber 302, and the third product chamber 303 can respectively correspond to the first chamber 14, the second chamber 16, and the third chamber 33 in the delivery cavity 13, or the first product chamber 301, the second product chamber 302, and the third product chamber 303 can also be three other chambers for placing toiletries, thereby completing the automatic delivery of various liquids.

[0114] Embodiment 5, the present invention further discloses a washing machine, comprising a detergent dispensing device as described in any one of Embodiment 1 or Embodiment 2 or Embodiment 3 and Embodiment 4.

[0115] The washing machine can dispense the liquid in the first chamber 14 multiple times as needed through a control program.

[0116] Preferably, the detergent dispensing device may be an independent external dispensing device, or may be a dispensing device integrated on the washing machine, wherein the dispensing device, the main water inlet valve and the water inlet box on the washing machine form a highly integrated dispensing device.

[0117] Preferably, the detergent dispensing device shares the main water inlet solenoid valve of the washing machine, namely the water inlet valve 22. The solenoid valve may have a corresponding number of control conversion ports according to the type of liquid to be dispensed, so as to control the dispensing of different washing products.

[0118] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A detergent dispensing device, characterized in that: It comprises a water-controlled reversing valve, the water-controlled reversing valve comprises a water inlet end and a water outlet end, the water inlet end comprises at least two water inlet pipe ports, the water outlet end comprises at least two water outlet ports, a connecting pipeline is arranged between the water inlet end and the water outlet end, a valve core device is arranged inside the connecting pipeline, and the valve core device inside the water-controlled reversing valve adjusts the opening and closing state of the water outlet port according to the water inlet state of the water inlet pipe port and the water pressure; The water-controlled reversing valve comprises a reversing valve housing (106) and a reversing valve cover (110). One end of the reversing valve housing (106) is connected to a three-way valve (102). The three-way valve (102) has three ports, one of which is connected to a first water inlet pipe port (101), another is connected to a first water outlet port (103), and a third is fixedly connected to the reversing valve housing (106) via a guide hole (112). The reversing valve housing (106) has a second water inlet pipe port (111) and a second water outlet port (105), while the reversing valve cover (110) has a third water outlet port (109). The reversing valve core (107) passes through the guide hole (112). The reversing valve core (107) is connected to a first water inlet pipe port (101), and a second water outlet port (105) is connected to the first water outlet port (103). The end of the reversing valve (107) is connected to a membrane valve disc (104), the membrane valve disc (104) is arranged at one end of the three-way valve (102), a reversing valve plug (108) is arranged at one end of the reversing valve core (107), and the reversing valve plug (108) is arranged in the reversing valve housing (106). When water enters the three-way valve (102), the membrane valve disc (104) can drive the reversing valve core (107) and the reversing valve plug (108) to move upward to block the third water outlet (109); when there is no water in the three-way valve (102), the membrane valve disc (104) can drive the reversing valve core (107) and the reversing valve plug (108) to move downward to block the second water outlet (105); The water control reversing valve is connected to the water inlet valve (22), and the water inlet valve (22) comprises two outlets, wherein the first outlet is connected to the first water inlet pipe port (101) of the water control reversing valve via a first connecting pipe (202), and the second outlet is connected to the second water inlet pipe port (111) of the water control reversing valve via a second connecting pipe (203); the first water outlet (103) and the third water outlet (109) on the water control reversing valve are respectively connected to the first water inlet pipe port (21) on the first venturi tube structure (1) and the second water inlet pipe port (9) on the second venturi tube structure (10); the second water outlet (105) on the water control reversing valve is connected to the washing bucket and / or the delivery chamber (13); A first chamber (14) is arranged in the delivery chamber (13), and delivery liquid is stored in the first chamber (14). The first chamber (14) is connected to the constant volume chamber (4) via a liquid suction pipe (6). The first venturi tube structure (1) is connected to the constant volume chamber (4) via a first negative pressure pipe (2), and the second venturi tube structure (10) is connected to the constant volume chamber (4) via a second negative pressure pipe (8). A one-way valve and / or a floating ball valve are arranged in the first negative pressure pipe (2), the second negative pressure pipe (8), and the liquid suction pipe (6). By changing the water inlet state of the two venturi tubes, the delivery liquid flows into the constant volume chamber (4), or the delivery liquid in the constant volume chamber (4) is delivered to the delivery chamber (13).

2. The detergent dispensing device according to claim 1, characterized in that: A chamber assembly is arranged in the delivery chamber (13), the chamber assembly is connected to the constant volume chamber (4) via a liquid suction pipe (6), the chamber assembly comprises at least two chambers, each chamber being capable of containing delivery liquid, a reversing valve (30) is arranged on the liquid suction pipe (6), the reversing valve (30) is connected to the chamber in the chamber assembly via a liquid suction pipeline, the first venturi tube structure (1) is connected to the constant volume chamber (4) via a first negative pressure pipe (2), the second venturi tube structure (10) is connected to the constant volume chamber (4) via a second negative pressure pipe (8), a one-way valve and / or a floating ball valve are arranged in the first negative pressure pipe (2), the second negative pressure pipe (8) and the liquid suction pipe (6), and by changing the water inlet state of the two venturi tubes, the delivery liquid flows into the constant volume chamber (4) or the delivery liquid in the constant volume chamber (4) is delivered into the delivery chamber (13).

3. The detergent dispensing device according to claim 1 or 2, characterized in that: The constant volume chamber (4) is connected to a constant volume chamber cleaning device, and the constant volume chamber cleaning device is used to clean the constant volume chamber (4) when liquid is discharged from the constant volume chamber (4).

4. The detergent dispensing device according to claim 3, characterized in that: The constant volume chamber cleaning device comprises an overflow box (18), and / or a first connecting pipe (34), and / or a second connecting pipe (35); wherein the overflow box (18) is connected to the first venturi tube structure (1), and the first venturi tube structure (1) is connected to the constant volume chamber (4); one end of the first connecting pipe (34) is connected to the water outlet end of the second venturi tube structure (10), and the other end of the first connecting pipe (34) is connected to the constant volume chamber (4); one end of the second connecting pipe (35) is connected to the water inlet end of the second venturi tube structure (10), and the other end of the second connecting pipe (35) is connected to the constant volume chamber (4).

5. The detergent dispensing device according to claim 1, wherein the two or more water outlets of the water outlet end of the water control reversing valve are separately connected to different chambers on the dispensing cavity (13), and the chambers on the dispensing cavity (13) are used to store any one, two or more of washing powder, detergent, softener and disinfectant.

6. The detergent dispensing device according to claim 5, characterized in that: The three chambers on the delivery chamber (13) are respectively a first product chamber (301), a second product chamber (302), and a third product chamber (303); the first water outlet (103) of the water-controlled reversing valve is connected to the first product chamber (301) via a third connecting pipe (204); the second water outlet (105) is connected to the second product chamber (302) via a fourth connecting pipe (205); and the third water outlet (109) is connected to the third product chamber (303) via a fifth connecting pipe (206).

7. A washing machine, characterized in that: It comprises a detergent dispensing device as described in any one of claims 1 to 6.

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