Automatic dispenser with water draining function

Abstract

The application relates to an automatic dispenser with residual water drainage function, belonging to the technical field of washing machines, which comprises a dispensing box, a water inlet, a washing water outlet, a residual water outlet and a residual liquid cavity are arranged on the dispensing box, and a flow channel is arranged between the water inlet and the washing water outlet; a liquid drainage valve is arranged in the dispensing box and used for draining residual liquid in the flow channel into the residual liquid cavity; and a suction pump is arranged, the inlet of the suction pump is communicated with the residual liquid cavity, and the outlet of the suction pump is communicated with the residual water outlet. The washing machine integrated with the automatic dispenser can realize automatic residual water drainage function, residual water in the flow channel and the external pipeline of the automatic dispenser can be drained into the residual liquid cavity through the liquid drainage valve, and then drained out of the residual water outlet through the suction pump, so that the water stagnation phenomenon is eliminated, the risk of automatic dispenser cracking caused by water freezing when the automatic dispenser is used in a cold environment or outdoors is effectively avoided, and the reliability and service life of the equipment under harsh conditions are remarkably improved.

Description

Technical Field

[0001] This application relates to the field of washing machine technology, and in particular to an automatic dispenser with residual water drainage function. Background Technology

[0002] In the field of washing machine technology, automatic detergent dispensers, as the core component for achieving precise detergent addition, have been widely used in modern washing machines to meet users' growing demands for convenient operation, efficient washing, and intelligent experience.

[0003] In related technologies, existing automatic detergent dispensers typically employ a design where water enters through an inlet valve and is then transported upwards through pipes to the washing drum. Their operation relies on water pressure during the water intake process. However, after the system stops operating, residual water in the pipes cannot be completely drained through conventional methods, resulting in water stagnation in the pipes and inside the automatic dispenser. This design is particularly common in multi-drum washing machines, where the automatic dispenser is integrated into the water inlet path of the multi-drum system to achieve independent or simultaneous detergent dispensing to each drum.

[0004] However, existing technologies have significant drawbacks: First, for multi-drum washing machines and their matching automatic dispensing devices, the washing machine structure typically uses a bottom-inlet and top-outlet layout, which easily leads to water stagnation in the pipes and inside the automatic dispensing device after water enters; second, when the washing machine is installed outdoors or in cold regions, the residual water freezes in the low-temperature environment, which can easily cause the pipes and automatic dispensing device to freeze and crack, resulting in equipment damage; at the same time, when the machine is idle for a long time, the residual water will breed microorganisms due to lack of flow, producing odors and polluting the water quality, ultimately causing secondary pollution of the washed clothes, affecting the user's health and user experience. Summary of the Invention

[0005] In view of the shortcomings or deficiencies mentioned in the background technology, this application provides an automatic dispenser with residual water drainage function, which can drain the water remaining in the pipeline and the automatic dispenser, effectively avoiding the risk of the automatic dispenser freezing and cracking due to water freezing when used outdoors in cold environments, and improving the reliability and service life of the equipment under harsh conditions.

[0006] This application provides an automatic dispenser with residual water drainage function, including: A dispensing box is provided with a water inlet, a washing water outlet, a residual liquid outlet and a residual liquid chamber, and a flow channel is connected between the water inlet and the washing water outlet; A drain valve is provided inside the dispensing box to drain residual liquid in the flow channel into the residual liquid chamber; A suction pump, the inlet of which is connected to the residual liquid chamber, and the outlet of which is connected to the residual liquid outlet.

[0007] In some embodiments, the dispensing box includes a middle cover, a lower cover, and a bottom box that are sequentially sealed together, with the residual liquid cavity formed between the middle cover, the lower cover, and the bottom box, and a first solvent cavity and a second solvent cavity that are separated from each other between the lower cover and the bottom box.

[0008] In some embodiments, a dilution mixing channel is provided between the middle cover and the lower cover, and a first dispensing pump for conveying solvent from the first solvent chamber to the dilution mixing channel and a second dispensing pump for conveying solvent from the second solvent chamber to the dilution mixing channel; The water inlet includes a dilution water inlet disposed on the lower cover and connected to the dilution mixing channel, and the washing water outlet includes a dilution water outlet disposed on the middle cover and connected to the dilution mixing channel.

[0009] In some embodiments, a main flushing channel and a first branch flushing channel and a second branch flushing channel respectively connected to the main flushing channel are provided between the middle cover and the lower cover; The water inlet includes a rinsing water inlet disposed on the lower cover and connected to the main rinsing channel, and the first branch rinsing channel and the second branch rinsing channel are respectively connected to the first solvent chamber and the second solvent chamber.

[0010] In some embodiments, the lower cover is provided with a three-way valve that connects the main flushing channel, the first branch flushing channel, and the second branch flushing channel; The middle cover is provided with a first perforation connecting the first branch flushing channel and the first solvent chamber, and a second perforation connecting the second branch flushing channel and the second solvent chamber.

[0011] In some embodiments, a first flushing drainage channel connecting the first branch flushing channel and the residual liquid outlet is provided between the middle cover and the lower cover, and a second flushing drainage channel connecting the second branch flushing channel and the residual liquid outlet. A first venturi tube and a second venturi tube are respectively installed in the first flushing drainage channel and the second flushing drainage channel. The throat of the first venturi tube is provided with a first negative pressure port that connects to the first solvent chamber, and the throat of the second venturi tube is provided with a second negative pressure port that connects to the second solvent chamber.

[0012] In some embodiments, a first negative pressure liquid absorption channel is provided between the middle cover and the lower cover, which communicates with the first negative pressure port and extends one end into the first solvent chamber, and a second negative pressure liquid absorption channel is provided, which communicates with the second negative pressure port and extends one end into the second solvent chamber. A drainage confluence channel connecting the residual liquid outlet is provided between the lower cover and the bottom cover. The lower cover is provided with a first through hole connecting the first flushing drainage channel and the drainage confluence channel, and a second through hole connecting the second flushing drainage channel and the drainage confluence channel.

[0013] In some embodiments, the residual liquid outlet is provided on the middle cover, a residual liquid discharge channel communicating with the outlet of the suction pump is provided between the lower cover and the middle cover, and a residual liquid suction channel communicating with the inlet of the suction pump is provided on the bottom box. The lower cover is provided with a third through hole connecting the residual liquid discharge channel and the liquid merging channel, as well as a channel hole connecting the liquid merging channel and the residual liquid outlet.

[0014] In some embodiments, the water inlet includes a first clean water inlet disposed on the lower cover, the washing water outlet includes a first clean water outlet disposed on the middle cover, and a first clean water flow channel connecting the first clean water inlet and the first clean water outlet is disposed between the middle cover and the lower cover; The top of the middle cover is sealed and connected to the upper cover. The upper cover is provided with a second clean water inlet and a second clean water outlet. A second clean water flow channel connecting the second clean water inlet and the second clean water outlet is provided between the upper cover and the middle cover. The lower cover is provided with a third clean water inlet, the upper cover is provided with a third clean water outlet, a third clean water flow channel is provided between the upper cover and the middle cover to connect the third clean water outlet, and a through hole is provided on the middle cover to connect the third clean water inlet and the third clean water flow channel.

[0015] In some embodiments, the lower cover is provided with a first inlet communicating with the first solvent chamber and a second inlet communicating with the second solvent chamber; The lower cover is provided with a first liquid level sensor for detecting the liquid level in the first solvent chamber and a second liquid level sensor for detecting the liquid level in the second solvent chamber.

[0016] The beneficial effects of the technical solution provided in this application include: This application provides an automatic dispenser with residual water drainage function. The dispenser includes a dispenser box with an inlet, a washing outlet, a residual liquid outlet, and a residual liquid chamber. A flow channel connects the inlet and the washing outlet. A drain valve is located inside the dispenser box and is used to drain the residual liquid in the flow channel into the residual liquid chamber. A suction pump has its inlet connected to the residual liquid chamber and its outlet connected to the residual liquid outlet.

[0017] Therefore, the washing machine using the automatic dispensing device of this application can integrate an automatic residual water drainage function. When the washing machine stops running, the water remaining in the flow channel and external pipe of the automatic dispensing device can be drained into the residual liquid chamber through the drain valve, and then discharged from the residual liquid outlet by the suction pump, eliminating the phenomenon of water retention. This effectively avoids the risk of the automatic dispensing device freezing and cracking due to water freezing when used outdoors in cold environments, and significantly improves the reliability and service life of the equipment under harsh conditions. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the dispensing box according to an embodiment of this application; Figure 2 for Figure 1 Schematic diagram of the cross section at point AA; Figure 3 for Figure 1 Schematic diagram of the cross section at point BB; Figure 4 for Figure 1 Cross-sectional view at point CC; Figure 5 for Figure 1 Schematic diagram of the cross section at point DD; Figure 6 This is an exploded view of the dispensing box according to an embodiment of this application; Figure 7 This is an exploded view of the delivery box from another perspective, according to an embodiment of this application. Figure 8 This is a schematic diagram of the structure of the bottom box according to an embodiment of this application; Figure 9 This is a schematic diagram of the structure of the lower cover according to an embodiment of this application; Figure 10 This is a schematic diagram of the structure of the cover in an embodiment of this application; Figure 11 for Figure 10 Schematic diagram of the cross section at the middle EE; Figure 12 for Figure 10 Schematic diagram of the cross section at the middle FF; Figure 13 This is a schematic diagram of the structure of the top cover according to an embodiment of this application; Figure 14 This is a partial structural diagram of the cover in an embodiment of this application; Figure 15 This is a schematic diagram illustrating the implementation of the delivery box in an embodiment of this application.

[0020] The attached diagram lists the components represented by each number as follows: 100. Dispensing box; 200. Inlet valve module; 300. Side panel water passage; 400. Switching valve module; 1. Top cover; 2. Middle cover; 3. Bottom cover; 4. Base box; 5. Water inlet; 51. Dilution water inlet; 52. Rinse water inlet; 53. First clean water inlet; 54. Second clean water inlet; 55. Third clean water inlet; 6. Washing water outlet; 61. Dilution water outlet; 62. First clean water outlet; 63. Second clean water outlet; 64. Third clean water outlet; 7. Residual liquid outlet; 8. Residual liquid chamber; 9. Flow channel; 10. Drain valve; 11. Suction pump; 12. First solvent chamber; 13. Second solvent chamber; 14. Dilution mixing channel; 15. First dosing pump; 16. Second dosing pump; 17. Main flushing channel; 18. First branch flushing channel; 19. Second branch flushing channel; 20. Three-way valve; 21. First perforation; 22. Second perforation; 23. First flushing drain channel; 24. Second flushing drain channel; 25. First Venturi tube; 26. Second Venturi tube; 27. First negative pressure port; 28. Second negative pressure port; 29. ​​First negative pressure suction channel; 30. Second negative pressure suction channel; 31. Drainage confluence channel; 32. First through hole; 33. Second through hole; 34. Residual liquid discharge channel; 35. Residual liquid extraction channel; 36. Third through hole; 37. Channel hole; 38. First clean water channel; 39. Second clean water channel; 40. Third clean water channel; 41. Through hole; 42. First feed inlet; 43. Second feed inlet; 44. First liquid level sensor; 45. Second liquid level sensor. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0022] In view of the shortcomings or deficiencies mentioned in the background technology, this application provides an automatic dispenser with residual water drainage function, which can drain the water remaining in the pipeline and the automatic dispenser, effectively avoiding the risk of the automatic dispenser freezing and cracking due to water freezing when used outdoors in cold environments, and improving the reliability and service life of the equipment under harsh conditions.

[0023] See Figures 1 to 15 As shown in the figure, this application embodiment provides an automatic dispenser with residual water drainage function, including: The dispensing box 100 is provided with a water inlet 5, a washing water outlet 6, a residual liquid outlet 7 and a residual liquid chamber 8. A flow channel 9 connects the water inlet 5 and the washing water outlet 6. Drain valve 10 is installed in the dispensing box 100 and is used to drain the residual liquid in the flow channel 9 into the residual liquid chamber 8. The suction pump 11 has its inlet connected to the residual liquid chamber 8 and its outlet connected to the residual liquid outlet 7.

[0024] The automatic dispenser in this embodiment integrates an automatic residual water drainage function. When the washing machine stops running, the water remaining in the flow channel 9 and external pipe of the automatic dispenser can be drained into the residual liquid chamber 8 through the drain valve 10, and then discharged from the residual liquid outlet 7 by the suction pump 11, eliminating water retention and effectively avoiding the risk of the automatic dispenser freezing and cracking due to water freezing when used in cold environments or outdoors, significantly improving the reliability and service life of the equipment under harsh conditions.

[0025] For example, the water inlet 5 is located at one end of the dispensing box 100, and the washing water outlet 6 and the residual liquid outlet 7 are located at the top of the dispensing box 100. In use, the water inlet 5 is connected to the water inlet valve module 200, and the washing water outlet 6 and the residual liquid outlet 7 are connected to the upper switching valve module 400 through pipes and side plate water passages 300; the drain valve 10 is a one-way valve with a spring installed, and the height of the one-way valve is lower than that of the water inlet 5 and the washing water outlet 6.

[0026] When the valves of the inlet valve module 200 and the switching valve module 400 are opened, high-pressure water enters the flow channel 9 through the inlet 5. Under the action of water pressure, the one-way valve is compressed downward to close the spring. The high-pressure water enters the washing machine drum through the pipe, the side plate water passage 300 and the switching valve module 400.

[0027] When the valve of the inlet valve module 200 is closed, the inlet 5 stops water intake, the water pressure in the flow channel 9 drops sharply, the spring resets and causes the one-way valve to move upward and open, and the water remaining in the pipe and side plate water passage 300 can be discharged from the flow channel 9 to the residual liquid chamber 8 under the action of gravity, and then pumped by the suction pump 11 to the residual liquid outlet 7 for discharge.

[0028] In this embodiment, the suction pump 11 can be a self-priming pump. When the washing machine drain pipe interface is located above the water inlet valve module 200, the residual liquid outlet 7 can be discharged upwards via a pipe. Preferably, a duckbill rubber check valve can be installed at the port where the drain valve 10 is installed to prevent liquid in the residual liquid chamber 8 from flowing back into the flow channel 9. In other embodiments, the drain valve 10 can be a miniature electric valve or a miniature solenoid valve.

[0029] In some alternative embodiments: see Figures 1 to 7As shown, this application embodiment provides an automatic dispenser with residual water drainage function. The dispenser box 100 of the automatic dispenser with residual water drainage function includes a middle cover 2, a lower cover 3 and a bottom box 4 that are sealed and connected in sequence. A residual liquid cavity 8 is formed between the middle cover 2, the lower cover 3 and the bottom box 4. A first solvent cavity 12 and a second solvent cavity 13 that are separated from each other are formed between the lower cover 3 and the bottom box 4.

[0030] In this embodiment, the residual liquid chamber 8 is formed by a sealed connection of a middle cover 2, a lower cover 3 and a bottom box 4. The lower cover 3 is provided with multiple water inlets 5, and each water inlet 5 is provided with a drain valve 10 in the flow channel 9 corresponding to the flow channel 9, so that the residual water can be drained from each water inlet 5.

[0031] In addition, a first solvent chamber 12 and a second solvent chamber 13 are formed between the lower cover 3 and the bottom box 4, which are separated from each other. The first solvent chamber 12 and the second solvent chamber 13 are independent of the residual liquid chamber 8. The first solvent chamber 12 and the second solvent chamber 13 can be used to store laundry detergent and fabric softener, respectively.

[0032] In some alternative embodiments: see Figures 1 to 9 As shown, this application embodiment provides an automatic dispenser with residual water drainage function. The automatic dispenser with residual water drainage function has a dilution mixing channel 14 between the middle cover 2 and the lower cover 3, as well as a first dispensing pump 15 for conveying the solvent in the first solvent chamber 12 to the dilution mixing channel 14 and a second dispensing pump 16 for conveying the solvent in the second solvent chamber 13 to the dilution mixing channel 14. The inlet 5 includes a dilution inlet 51 disposed on the lower cover 3 and connected to the dilution mixing channel 14, and the washing outlet 6 includes a dilution outlet 61 disposed on the middle cover 2 and connected to the dilution mixing channel 14.

[0033] In this embodiment, the first dispensing pump 15 and the second dispensing pump 16 are self-priming pumps; the dilution mixing channel 14 has a continuous meandering shape and is composed of multiple U-shaped bends connected end to end; the lower cover 3 is provided with a first solvent inlet and a second solvent inlet located on the dilution mixing channel 14, and a one-way valve is installed in the first solvent inlet and the second solvent inlet.

[0034] The first dispensing pump 15 can convey the laundry detergent in the first solvent chamber 12 upwards and inject it into the dilution mixing channel 14 through the first solvent inlet; the second dispensing pump 16 can convey the fabric softener in the second solvent chamber 13 upwards and inject it into the dilution mixing channel 14 through the second solvent inlet.

[0035] During use, the appropriate laundry detergent or fabric softener is injected into the dilution mixing channel 14 according to the washing needs. Then, high-pressure water is injected into the dilution mixing channel 14 through the dilution inlet 51, so that the high-pressure water mixes with the laundry detergent or fabric softener. Finally, the mixture is injected into the corresponding washing machine drum through the dilution outlet 61. The dilution mixing channel 14 has a continuous meandering shape, which allows the water flow to continuously reverse, ensuring that the water and the laundry solvent are fully mixed.

[0036] In some alternative embodiments: see Figures 1 to 15 As shown, this application embodiment provides an automatic dispenser with residual water drainage function. The automatic dispenser with residual water drainage function has a main flushing channel 17 and a first branch flushing channel 18 and a second branch flushing channel 19 respectively connected to the main flushing channel 17 between the middle cover 2 and the lower cover 3. The inlet 5 includes a rinsing inlet 52 disposed on the lower cover 3 and connected to the main rinsing channel 17. The first branch rinsing channel 18 and the second branch rinsing channel 19 are respectively connected to the first solvent chamber 12 and the second solvent chamber 13.

[0037] In this embodiment, after high-pressure water is injected through the flushing inlet 52, the high-pressure water can be diverted through the main flushing channel 17 to the first branch flushing channel 18 and the second branch flushing channel 19, and then injected into the first solvent chamber 12 and the second solvent chamber 13 through the first branch flushing channel 18 and the second branch flushing channel 19 respectively, to dilute and flush the solvent in the first solvent chamber 12 and the second solvent chamber 13.

[0038] In some alternative embodiments: see Figures 1 to 15 As shown in the figure, this application embodiment provides an automatic dispenser with residual water drainage function. The lower cover 3 of the automatic dispenser with residual water drainage function is provided with a three-way valve 20 connecting the main flushing channel 17, the first branch flushing channel 18 and the second branch flushing channel 19; the middle cover 2 is provided with a first through hole 21 connecting the first branch flushing channel 18 and the first solvent chamber 12, and a second through hole 22 connecting the second branch flushing channel 19 and the second solvent chamber 13.

[0039] In this embodiment, the three-way valve 20 is fixedly installed on the bottom surface of the lower cover 3, and is connected to the main flushing channel 17, the first branch flushing channel 18 and the second branch flushing channel 19 respectively, so that the high-pressure water in the main flushing channel 17 can be diverted to the first branch flushing channel 18 and the second branch flushing channel 19; the high-pressure water in the first branch flushing channel 18 and the second branch flushing channel 19 is injected into the first solvent chamber 12 and the second solvent chamber 13 through the first perforation 21 and the second perforation 22 respectively.

[0040] In some alternative embodiments: see Figures 1 to 15As shown, this application embodiment provides an automatic dispenser with residual water drainage function. The automatic dispenser with residual water drainage function has a first flushing drainage channel 23 connecting the first branch flushing channel 18 and the residual liquid outlet 7, and a second flushing drainage channel 24 connecting the second branch flushing channel 19 and the residual liquid outlet 7. A first venturi tube 25 and a second venturi tube 26 are respectively provided in the first flushing drainage channel 23 and the second flushing drainage channel 24. The throat of the first venturi tube 25 is provided with a first negative pressure port 27 that connects to the first solvent chamber 12, and the throat of the second venturi tube 26 is provided with a second negative pressure port 28 that connects to the second solvent chamber 13.

[0041] In this embodiment of the application, when high-pressure water is injected into the main flushing channel 17, a portion of the water is injected into the first solvent chamber 12 and the second solvent chamber 13 through the first branch flushing channel 18 and the second branch flushing channel 19, respectively, and another portion of the water is discharged to the residual liquid outlet 7 through the first flushing drain channel 23 and the second flushing drain channel 24.

[0042] Since a first venturi tube 25 and a second venturi tube 26 are fixedly installed in the first flushing drainage channel 23 and the second flushing drainage channel 24 respectively, the first negative pressure port 27 opened at the throat of the first venturi tube 25 is connected to the first solvent chamber 12, and the second negative pressure port 28 opened at the throat of the second venturi tube 26 is connected to the second solvent chamber 13.

[0043] Therefore, when the first flushing drain channel 23 and the second flushing drain channel 24 continuously discharge high-pressure water, negative pressure can be generated at the first negative pressure port 27 and the second negative pressure port 28. The negative pressure can draw the residual liquid formed in the first solvent chamber 12 and the second solvent chamber 13 into the first flushing drain channel 23 and the second flushing drain channel 24 for discharge.

[0044] In some alternative embodiments: see Figures 1 to 15 As shown, this application embodiment provides an automatic dispenser with residual water drainage function. The automatic dispenser with residual water drainage function has a first negative pressure liquid absorption channel 29 that connects to the first negative pressure port 27 and extends one end into the first solvent chamber 12, and a second negative pressure liquid absorption channel 30 that connects to the second negative pressure port 28 and extends one end into the second solvent chamber 13. A drainage confluence channel 31 connecting the residual liquid outlet 7 is provided between the lower cover 3 and the bottom cover. The lower cover 3 is provided with a first through hole 32 connecting the first flushing drainage channel 23 and the drainage confluence channel 31, and a second through hole 33 connecting the second flushing drainage channel 24 and the drainage confluence channel 31.

[0045] In this embodiment of the application, the first negative pressure port 27 is connected to the first solvent chamber 12 through the first negative pressure liquid suction channel 29, and the second negative pressure port 28 is connected to the second solvent chamber 13 through the first negative pressure liquid suction channel 29. The inlets of the first negative pressure liquid suction channel 29 and the second negative pressure liquid suction channel 30 are both far away from the first perforation 21 and the second perforation 22. The first solvent chamber 12 and the second solvent chamber 13 can be filled with water from one side through the first perforation 21 and the second perforation 22, respectively, and then drawn away from the other side by the first negative pressure suction channel 29 and the second negative pressure suction channel 30, respectively. This allows the injected water to flow from one side of the solvent chamber to the other side and then be discharged, ensuring the rinsing effect.

[0046] To facilitate the drainage of water from the first flushing drain channel 23 and the second flushing drain channel 24, a drain confluence channel 31 is provided. The first flushing drain channel 23 and the second flushing drain channel 24 are connected to the drain confluence channel 31 located below through the first through hole 32 and the second through hole 33, respectively. One-way valves to prevent backflow are installed in the first through hole 32 and the second through hole 33, respectively.

[0047] In some alternative embodiments: see Figures 1 to 15 As shown, this application embodiment provides an automatic dispenser with residual water discharge function. The residual liquid outlet 7 of the automatic dispenser with residual water discharge function is provided on the middle cover 2. A residual liquid discharge channel 34 connected to the outlet of the suction pump 11 is provided between the lower cover 3 and the middle cover 2. A residual liquid suction channel 35 connected to the inlet of the suction pump 11 is provided on the bottom box 4. The lower cover 3 is provided with a third through hole 36 that connects the residual liquid discharge channel 34 and the liquid discharge confluence channel 31, and a flow channel hole 37 that connects the liquid discharge confluence channel 31 and the residual liquid outlet 7.

[0048] In this embodiment, the residual liquid discharge channel 34 is connected to the discharge confluence channel 31 located below it through the third through hole 36. A one-way valve to prevent backflow is installed in the third through hole 36. The discharge confluence channel 31 is connected to the residual liquid outlet 7 above through the channel hole 37, so that the liquids in the residual liquid chamber 8, the first solvent chamber 12 and the second solvent chamber 13 can be discharged through a single residual liquid outlet 7.

[0049] In some alternative embodiments: see Figures 1 to 14 As shown, this application embodiment provides an automatic dispenser with residual water drainage function. The water inlet 5 of the automatic dispenser with residual water drainage function includes a first clean water inlet 53 disposed on the lower cover 3, and the washing water outlet 6 includes a first clean water outlet 62 disposed on the middle cover 2. A first clean water flow channel 38 is provided between the middle cover 2 and the lower cover 3 to connect the first clean water inlet 53 and the first clean water outlet 62. The top of the middle cover 2 is sealed and connected to the upper cover 1. The upper cover 1 is provided with a second clean water inlet 54 and a second clean water outlet 63. A second clean water flow channel 39 is provided between the upper cover 1 and the middle cover 2 to connect the second clean water inlet 54 and the second clean water outlet 63. The lower cover 3 is provided with a third clean water inlet 55, the upper cover 1 is provided with a third clean water outlet 64, a third clean water flow channel 40 connecting the upper cover 1 and the middle cover 2 is provided between the upper cover 1 and the middle cover 2, and a through hole 41 connecting the third clean water inlet 55 and the third clean water flow channel 40 is provided on the middle cover 2.

[0050] In this embodiment, the automatic dispenser is equipped with multiple clean water supply channels, which can simultaneously supply clean water to each drum of a multi-drum washing machine. Specifically, the first clean water inlet 53 is integrally formed on the lower cover 3, and is connected to the first clean water outlet 62 integrally formed on the middle cover 2 through the first clean water flow channel 38.

[0051] The upper cover 1 is integrally formed with a second clean water inlet 54 and a second clean water outlet 63. There are two of each of the two clean water inlets 54 and the two clean water outlets 63. The two second clean water inlets 54 are connected to the two second clean water outlets 63 through two second clean water flow channels 39 respectively.

[0052] The lower cover 3 has two integrally formed third clean water inlets 55, and the upper cover 1 also has two integrally formed third clean water outlets 64. The two third clean water inlets 55 are respectively connected to the two third clean water channels 40 on the upper cover 1 through two through holes 41, and then connected to the two third clean water outlets 64 through the two third clean water channels 40.

[0053] It should be noted that in this embodiment, the upper cover 1, middle cover 2 and lower cover 3 are all integrated water circuit boards with water channel grooves, and the bottom box 4 is also provided with water channel grooves; the upper cover 1, middle cover 2, lower cover 3 and bottom box 4 are sealed and connected by welding so that the water channel grooves between the two components are spliced ​​to form a complete water circuit.

[0054] In some alternative embodiments: see Figures 1 to 8 As shown, this application embodiment provides an automatic dispenser with residual water drainage function. The lower cover 3 of the automatic dispenser with residual water drainage function is provided with a first inlet 42 communicating with the first solvent chamber 12 and a second inlet 43 communicating with the second solvent chamber 13. The lower cover 3 is provided with a first liquid level sensor 44 for detecting the liquid level in the first solvent chamber 12 and a second liquid level sensor 45 for detecting the liquid level in the second solvent chamber 13.

[0055] In this embodiment, the first inlet 42 and the second inlet 43 are located on the same side of the lower cover 3, so that laundry detergent or fabric softener can be introduced into the first solvent chamber 12 and the second solvent chamber 13 through the first inlet 42 and the second inlet 43 respectively.

[0056] The lower cover 3 is equipped with a first liquid level sensor 44 that extends into the first solvent chamber 12 and a second liquid level sensor 45 that extends into the second solvent chamber 13. Both the first liquid level sensor 44 and the second liquid level sensor 45 can be water level probes.

[0057] In the description of this application, it should be noted that the terms "upper," "lower," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Unless otherwise expressly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0058] It should be noted that in this application, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0059] The above description is merely a specific embodiment of this application, enabling those skilled in the art to understand or implement this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. An automatic dispenser with residual water drainage function, characterized in that, include: A dispensing box (100) is provided with a water inlet (5), a washing water outlet (6), a residual liquid outlet (7) and a residual liquid chamber (8), and a flow channel (9) is connected between the water inlet (5) and the washing water outlet (6). A drain valve (10) is provided in the dispensing box (100) for draining residual liquid in the flow channel (9) into the residual liquid chamber (8); A suction pump (11) is provided, the inlet of which is connected to the residual liquid chamber (8) and the outlet of which is connected to the residual liquid outlet (7).

2. The automatic dispenser with residual water drainage function as described in claim 1, characterized in that: The dispensing box (100) includes a middle cover (2), a lower cover (3) and a bottom box (4) that are sealed together in sequence. The residual liquid cavity (8) is formed between the middle cover (2), the lower cover (3) and the bottom box (4). A first solvent cavity (12) and a second solvent cavity (13) are formed between the lower cover (3) and the bottom box (4) and are separated from each other.

3. The automatic dispenser with residual water drainage function as described in claim 2, characterized in that: A dilution mixing channel (14) is provided between the middle cover (2) and the lower cover (3), and a first dispensing pump (15) for dispensing solvent in the first solvent chamber (12) to the dilution mixing channel (14) and a second dispensing pump (16) for dispensing solvent in the second solvent chamber (13) to the dilution mixing channel (14); The water inlet (5) includes a dilution water inlet (51) disposed on the lower cover (3) and connected to the dilution mixing channel (14), and the washing water outlet (6) includes a dilution water outlet (61) disposed on the middle cover (2) and connected to the dilution mixing channel (14).

4. The automatic dispenser with residual water drainage function as described in claim 2, characterized in that: A main flushing channel (17) and a first branch flushing channel (18) and a second branch flushing channel (19) are respectively connected to the main flushing channel (17) and the lower cover (3); The inlet (5) includes a flushing inlet (52) disposed on the lower cover (3) and connected to the main flushing channel (17). The first branch flushing channel (18) and the second branch flushing channel (19) are respectively connected to the first solvent chamber (12) and the second solvent chamber (13).

5. The automatic dispenser with residual water drainage function as described in claim 4, characterized in that: The lower cover (3) is provided with a three-way valve (20) that connects the main flushing channel (17), the first branch flushing channel (18), and the second branch flushing channel (19); The middle cover (2) is provided with a first perforation (21) connecting the first branch flushing channel (18) and the first solvent chamber (12), and a second perforation (22) connecting the second branch flushing channel (19) and the second solvent chamber (13).

6. The automatic dispenser with residual water drainage function as described in claim 4, characterized in that: A first flushing drainage channel (23) connecting the first branch flushing channel (18) and the residual liquid outlet (7) is provided between the middle cover (2) and the lower cover (3), and a second flushing drainage channel (24) connecting the second branch flushing channel (19) and the residual liquid outlet (7); A first venturi tube (25) and a second venturi tube (26) are respectively provided in the first flushing drainage channel (23) and the second flushing drainage channel (24). The throat of the first venturi tube (25) is provided with a first negative pressure port (27) that connects to the first solvent chamber (12), and the throat of the second venturi tube (26) is provided with a second negative pressure port (28) that connects to the second solvent chamber (13).

7. The automatic dispenser with residual water drainage function as described in claim 6, characterized in that: A first negative pressure liquid absorption channel (29) is provided between the middle cover (2) and the lower cover (3), which connects to the first negative pressure port (27) and extends one end into the first solvent chamber (12), and a second negative pressure liquid absorption channel (30) connects to the second negative pressure port (28) and extends one end into the second solvent chamber (13); A drain confluence channel (31) connecting the residual liquid outlet (7) is provided between the lower cover (3) and the bottom cover. The lower cover (3) is provided with a first through hole (32) connecting the first flushing drain channel (23) and the drain confluence channel (31), and a second through hole (33) connecting the second flushing drain channel (24) and the drain confluence channel (31).

8. The automatic dispenser with residual water drainage function as described in claim 7, characterized in that: The residual liquid outlet (7) is provided on the middle cover (2), and a residual liquid discharge channel (34) connecting the outlet of the suction pump (11) is provided between the lower cover (3) and the middle cover (2), and a residual liquid suction channel (35) connecting the inlet of the suction pump (11) is provided on the bottom box (4). The lower cover (3) is provided with a third through hole (36) connecting the residual liquid discharge channel (34) and the liquid discharge confluence channel (31), and a flow channel hole (37) connecting the liquid discharge confluence channel (31) and the residual liquid outlet (7).

9. The automatic dispenser with residual water drainage function as described in claim 2, characterized in that: The water inlet (5) includes a first clean water inlet (53) disposed on the lower cover (3), the washing water outlet (6) includes a first clean water outlet (62) disposed on the middle cover (2), and a first clean water flow channel (38) connecting the first clean water inlet (53) and the first clean water outlet (62) is provided between the middle cover (2) and the lower cover (3); The top of the middle cover (2) is sealed and connected to the upper cover (1). The upper cover (1) is provided with a second clean water inlet (54) and a second clean water outlet (63). A second clean water flow channel (39) connecting the second clean water inlet (54) and the second clean water outlet (63) is provided between the upper cover (1) and the middle cover (2). The lower cover (3) is provided with a third clean water inlet (55), the upper cover (1) is provided with a third clean water outlet (64), a third clean water channel (40) connecting the upper cover (1) and the middle cover (2) is provided, and a through hole (41) connecting the third clean water inlet (55) and the third clean water channel (40) is provided on the middle cover (2).

10. The automatic dispenser with residual water drainage function as described in claim 2, characterized in that: The lower cover (3) is provided with a first inlet (42) that connects to the first solvent chamber (12) and a second inlet (43) that connects to the second solvent chamber (13); The lower cover (3) is provided with a first liquid level sensor (44) for detecting the liquid level in the first solvent chamber (12) and a second liquid level sensor (45) for detecting the liquid level in the second solvent chamber (13).

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