Automatic dispensing device and washing machine

Abstract

The present invention discloses an automatic dispensing device and a washing machine. The automatic dispensing device comprises a spray water inlet flow channel for flowing pumped detergent into a water box. The spray water inlet flow channel is provided with an air vent connected to the external atmosphere. A control valve is provided at the air vent so that when water flows through the spray water inlet flow channel, a valve plug of the control valve is affected by the water pressure and blocks the air vent accordingly. When no water flows through the spray water inlet flow channel, the valve plug of the control valve is automatically reset to open the air vent, so that the residual water in the spray water inlet flow channel automatically flows out under the action of gravity. By arranging an air vent with a control valve on the spray water inlet channel, the control valve automatically opens the air vent after the automatic dispensing device stops working, so that the remaining water in the spray water inlet channel automatically flows out from the spray port due to the pressure difference between the inside and outside of the spray water inlet channel, thereby avoiding the occurrence of dripping water after the user opens the washing machine door, thereby preventing the breeding of bacteria due to the residual water in the water channel for too long, and preventing the residual water in the water channel from freezing and expanding due to cold and damaging the water channel structure.

Description

Technical Field

[0001] The invention belongs to the technical field of laundry devices, and in particular relates to an automatic dispensing device for detergent and washing powder of a washing machine. Background Art

[0002] With the accelerated pace of life and the continuous improvement of consumers' energy-saving awareness, users are paying more and more attention to energy-saving and convenient home appliances when purchasing home appliances. As a frequently used home appliance, energy saving and convenience have become important factors for customers to purchase washing machines. Washing machines with automatic detergent dispensing functions are therefore becoming more and more popular with users. However, most ordinary washing machines on the market are manually added with detergent when washing clothes, and the amount of detergent is difficult to control. When the amount of detergent is too small, the washing effect is poor and the cleaning ratio is low; when the amount of detergent is too large, it not only wastes detergent, but also increases the difficulty of rinsing, wastes water, electricity and time, and increases the cost of a single laundry. Based on this, washing machine manufacturers have successively launched washing machines with automatic detergent dispensing.

[0003] In view of this, the present invention is proposed. Summary of the invention

[0004] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide an automatic detergent dispensing device to achieve the purpose of automatically adding and dispensing detergent; the second purpose of the present invention is to provide an automatic dispensing device for a washing machine to achieve the purpose of automatically detecting the stored detergent; the third purpose of the present invention is to provide an automatic dispensing device for a washing machine to achieve the purpose of residual water in the flow channel of the automatic dispensing device. .

[0005] In order to solve the above technical problems, the basic concept of the technical solution adopted by the present invention is:

[0006] An automatic dispensing device includes a spray water inlet flow channel for flowing pumped detergent into a water box, the spray water inlet flow channel is provided with an air vent connected to the external atmosphere, and a control valve is provided at the air vent so that when water flows through the spray water inlet flow channel, the control valve plug is affected by the water flow pressure and blocks the air vent accordingly; when there is no water flowing through the spray water inlet flow channel, the control valve plug automatically resets to open the air vent, so that the residual water in the spray water inlet flow channel automatically flows out due to gravity.

[0007] Furthermore, the control valve includes a valve plug installed on the inner side of the air vent. Under the action of water pressure, the valve plug can be pushed outward along the axis of the air vent to block the air vent. A return spring is provided between the valve plug and the inner wall of the spray water inlet channel to apply an elastic force to the valve plug to drive it to open the air vent.

[0008] Furthermore, the valve plug includes a mounting portion extending axially along the air vent, a sealing ring sleeved on the mounting portion, and a first end of the mounting portion close to the air vent is provided with a horizontally extending stop rib to prevent it from detaching from the air vent.

[0009] Furthermore, the return spring is sleeved on the outer periphery of the mounting portion, one end of the return spring is in limiting contact with the flange of the second end of the mounting portion that is horizontally bent outward, and the other end is in limiting contact with the inner wall of the spray water inlet channel.

[0010] Furthermore, a sleeve protruding outward is provided on the spray water inlet channel, a coaxially arranged air hole is provided at the protruding end of the sleeve, the other end of the sleeve is connected with the spray water inlet channel, and the valve plug of the control valve is axially arranged and installed inside the sleeve; preferably, the second end of the mounting portion is arranged to fit correspondingly to the inner wall of the sleeve, the radial width of the stop rib provided at the first end of the mounting portion is greater than the diameter of the air hole, and the radial width of the sealing ring is greater than the diameter of the air hole.

[0011] Furthermore, a support rib extending vertically upward is provided on the bottom wall of the spray water inlet channel, and the upper end of the support rib is in supporting contact with the valve plug; preferably, there is a certain gap between the support rib and the two side walls of the spray water inlet channel to allow water to flow through; further preferably, the support rib is in supporting contact with the center of gravity of the valve plug, and the upper end surface of the support rib is a smooth horizontal supporting surface.

[0012] Furthermore, the water inlet end of the spray water inlet channel is connected to the negative pressure suction structure, and the end of the spray water inlet channel is provided with a spray port for spraying water into the water box, and the air hole is provided on the spray water inlet channel near the water inlet end.

[0013] Furthermore, the top of the water box is composed of a top cover plate, and a corresponding horizontally laid sealing plate is provided on the lower side of the top cover plate. The top cover plate and the sealing plate are welded together by a fusion process. A sealed flow channel structure for water flow is formed between the top cover plate and the sealing plate. Part of the flow channel structure constitutes a spray water inlet channel. The water inlet end of the spray water inlet channel passes through the sealing plate and is connected with the negative pressure suction structure, and the end is provided with a spray port that passes through the sealing plate and is connected with the lower part of the water box.

[0014] Furthermore, a vent hole is provided on the cover plate to connect the spray water inlet channel with the interior of the water box, and a vertically arranged control valve is installed on the vent hole.

[0015] The invention also discloses a washing machine, which is equipped with any one of the automatic dispensing devices described above.

[0016] After adopting the above technical scheme, the present invention has the following beneficial effects compared with the prior art.

[0017] By arranging an air vent with a control valve on the spray water inlet channel, the control valve automatically opens the air vent after the automatic dispensing device stops working, so that the remaining water in the spray water inlet channel automatically flows out from the spray port due to the pressure difference between the inside and outside of the spray water inlet channel, thereby avoiding the occurrence of dripping water after the user opens the washing machine door, thereby preventing the breeding of bacteria due to the residual water in the water channel for too long, and preventing the residual water in the water channel from freezing and expanding due to cold and damaging the water channel structure.

[0018] At the same time, the invention has a simple structure, significant effects and is suitable for popularization and use.

[0019] The specific implementation modes of the present invention are further described in detail below in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a schematic structural diagram of a detergent box in an embodiment of the present invention;

[0021] Figure 2 is a schematic diagram of the cross-sectional structure of a detergent box in an embodiment of the present invention;

[0022] Figure 3 is a schematic diagram of a horizontal cross-section structure of a detergent box in an embodiment of the present invention;

[0023] Figure 4 is another schematic diagram of a horizontal cross-section structure of a detergent box in an embodiment of the present invention;

[0024] Figure 5 Schematic diagram of the explosion structure of the automatic delivery device in the embodiment of the present invention;

[0025] Figure 6 is another schematic cross-sectional structure diagram of a detergent box in an embodiment of the present invention;

[0026] Figure 7 is a schematic diagram of the exploded structure of the detergent box in an embodiment of the present invention;

[0027] Figure 8 is a schematic structural diagram of a detergent box in an embodiment of the present invention;

[0028] Fig. 9 It is a schematic diagram of the cross-sectional structure of the automatic delivery device in an embodiment of the present invention;

[0029] Fig.10 A top view of the waterway structure in an embodiment of the present invention;

[0030] Fig.11 A schematic structural diagram of a control valve in an embodiment of the present invention;

[0031] Fig.12 and Fig.13A schematic diagram of the structure of the pressure rod in different viewing angles according to an embodiment of the present invention;

[0032] Fig.14 and Fig.15 A schematic diagram of the structure of a detergent box with different cross sections according to an embodiment of the present invention;

[0033] Fig.16 Embodiments of the present invention Fig.15 A schematic diagram of the local enlarged structure at point A in the middle;

[0034] Fig.17 A schematic diagram of the upper cover structure of the detergent box in an embodiment of the present invention;

[0035] Fig.18 A schematic cross-sectional structure diagram of an automatic delivery device in an embodiment of the present invention;

[0036] Fig.19 Embodiments of the present invention Fig.18 A schematic diagram of the local enlarged structure at B in the middle;

[0037] Explanation of the reference numerals in the accompanying drawings: 100, water box, 200, detergent box, 1, guide groove, 2, injection port, 3, liquid injection port, 4, upper cover, 5, buckle, 6, claw, 7, cover plate, 8, detergent chamber, 9, connecting rod, 10, blocking rib, 11, float, 12, magnet, 13, reed switch, 14, upper cover, 15, supporting rib, 16, blocking rib, 17, blocking rib, 18, detection slot, 19, supporting rib, 20, washing powder chamber, 21, softener chamber, 22, pressure rod, 23, pressing part, 24, card convex, 25, blocking rib, 26, slide groove, 27, buckle, 28, lock tongue, 29, card convex, 30, Slot, 31, flow channel, 32, liquid collecting tank, 33, liquid outlet, 34, one-way valve, 35, bracket, 36, screw, 37, screw column, 38, guide rib, 39, fixing rib, 40, groove, 41, support rib, 42, water outlet, 43, water retaining rib, 44, inclined surface, 45, water outlet cavity, 46, water inlet, 47, connecting part, 48, water outlet, 49, water inlet pipeline, 50, rib, 51, guide surface, 52, reversing valve, 53, negative pressure hole, 54, Venturi tube, 55. Top cover plate, 56. Cover plate, 57. Spray water inlet channel, 58. Spray port, 59. Water uniformity rib, 60. Water uniformity chamber, 61. Flow sensor, 62. Hot water inlet pipe, 63. Cold water inlet pipe, 64. Suction channel, 65. Folding part, 66. Air vent, 67. Control valve, 68. Valve plug, 69. Mounting part, 70. Sealing ring, 71. Reset spring, 72. Handle part, 73. Limiting column, 74. Opening, 75. Pressing hole, 76. Washing powder water inlet, 77. Mounting rod, 78. Connecting rib, 79. Slot, 80. Inner locking convexity, 81. Lower flange, 82. Outer locking convexity, 83. Blocking portion, 84. Sealing rib, 85. Locking convexity, 86. Support rib, 87. Partition rib, 88. Stop rib, 89. Flange, 90. Inner flange, 91. Mixing chamber. DETAILED DESCRIPTION

[0038] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. The following embodiments are used to illustrate the present invention but are not used to limit the scope of the present invention.

[0039] like Figures 1 to 11 As shown, an automatic dispensing device is introduced in an embodiment of the present invention, which includes a water box 100 installed on a washing machine, and a detergent box 200 is installed in the water box 100; preferably, the detergent box 200 is installed in the water box 100 so as to be pulled outward. The detergent box 200 is provided with a plurality of independent chambers; preferably, the detergent box 200 has three independent chambers, namely: a detergent chamber 8, a softener chamber 21 and a washing powder chamber 20.

[0040] A washing powder injection port 2 is provided at the upper portion of the washing powder chamber 20 for the user to inject washing powder into the chamber. A water inlet connected to the water inlet pipe of the washing machine is also provided on the water box 100. The water inlet is connected to the injection port 2 to inject water into the washing powder chamber 8. The washing powder in the chamber is mixed with the water and then flows into the lower portion of the water box 100 from the water outlet structure provided at the bottom of the washing powder chamber 8, and then flows into the washing drum of the washing machine through the pipe provided at the bottom of the water box 100 to wash the clothes.

[0041] The tops of the detergent chamber 8 and the softener chamber 21 are respectively provided with injection ports 3 for injecting detergent box softeners, so that the user can add detergent and softener into the chambers accordingly; when the washing machine needs to add detergent and / or softener, the negative pressure pumping device provided at the upper part of the water box 100 starts to work, and the detergent and / or softener stored in the chamber flows out from the liquid outlet 33 of the chamber at a certain flow rate, and after mixing with the washing machine inlet water, it flows into the lower part of the water box 100, and then flows into the washing machine washing drum through the pipeline provided at the bottom of the water box 100 to wash the clothes.

[0042] Embodiment 1

[0043] like Figures 1 to 9 As shown, this embodiment introduces an automatic dispensing device, which includes a washing box 200, the detergent box 200 includes at least one chamber for containing detergent, a liquid outlet 33 is provided at the bottom of the chamber, a downwardly concave flow channel 31 is provided at the bottom of the chamber, and the end of the flow channel 31 is connected to the liquid outlet 33, so that the detergent remaining in the chamber is discharged along the flow channel 31 to the liquid outlet 33. A one-way valve 34 is installed at the liquid outlet 33, so that the detergent or softener stored in the chamber flows out of the chamber through the one-way valve 34.

[0044] By setting a flow channel connected to the liquid outlet at the bottom of the detergent box chamber, the detergent and other liquids stored in the chamber are allowed to flow toward the flow channel, avoiding a large area of ​​residual liquid at the bottom of the chamber, thereby achieving the purpose of reducing the amount of residual detergent in the chamber.

[0045] In this embodiment, at least one flow channel 31 extending from the front end to the rear end is disposed at the bottom of the chamber, and one end of the flow channel 31 extends to communicate with the liquid outlet 33 .

[0046] In this embodiment, a liquid outlet 33 is provided at the bottom of the side wall of the detergent box 200, and the liquid outlet 33 is flush with or lower than the bottom wall at the end of the flow channel 31. Preferably, the bottom wall of the flow channel 31 gradually decreases in height from the front end to the rear end, and the rear end of the flow channel 31 is connected to the liquid outlet 33, so that the residue in the flow channel is guided to flow to the liquid outlet by the inclined bottom wall.

[0047] In this embodiment, the detergent box 200 is provided with three independent chambers, namely, a detergent chamber 8, a softener chamber 21 and a washing machine powder chamber 20; the rear ends of the detergent chamber 8 and the softener chamber 21 are respectively provided with a detergent outlet and a softener outlet, and the chamber bottoms of the detergent chamber 8 and the softener chamber 21 are respectively provided with flow channels 31, and the rear ends of the two flow channels 31 are respectively connected with the detergent outlet and the softener outlet in a one-to-one correspondence.

[0048] In this embodiment, the detergent box 200 includes a softener chamber 21 and a detergent chamber 8 which are relatively independently arranged on the left and right sides, and a relatively independent washing powder chamber 20 is arranged in the middle of the detergent chamber 8.

[0049] In this embodiment, a float 11 for checking the liquid storage height is respectively provided in the softener chamber 21 and the detergent chamber 8, and a downwardly recessed detection groove 18 for the float 11 to fall is respectively provided in the middle area of ​​the bottom of the chamber, and the detection groove 18 is connected to one end of the flow channel 31, and the other end of the flow channel 31 is connected to the liquid outlet 33 on the rear side of the chamber; preferably, the bottom of the detection groove 18 is arranged flush with the bottom of the flow channel 31; or the bottom of the detection groove 18 is an inclined surface inclined downward in the direction of the flow channel 31 to guide the detergent in the detection groove 18 to flow along the flow channel 31.

[0050] In this embodiment, a vertical support rib 19 is provided in the detection groove 18 and extends radially toward the center of the detection groove 18. The upper end of the support rib 19 contacts the bottom of the float 11 to support the float 11 and prevent it from sticking to the residual detergent in the detection groove 18.

[0051] In this embodiment, a downwardly concave liquid collecting tank 32 is provided at the rear side of the chamber, and the liquid collecting tank 32 is provided corresponding to the liquid outlet 33, and the liquid collecting tank 32 is connected to the end of the flow channel 31; preferably, the bottom of the liquid collecting tank 32 is provided lower than the bottom of the flow channel 31. By providing a liquid collecting tank lower than the height of the flow channel at the rear end of the flow channel, so that the liquid such as detergent in the flow channel flows toward the liquid collecting tank, the residual detergent and other substances in the flow channel are further reduced. Further preferably, a one-way valve 34 is provided at the liquid outlet 33, the one-way valve 34 is provided horizontally, and the water suction port of the one-way valve 34 is provided at the lower part of the center of the one-way valve 34; preferably, the water suction port of the one-way valve 34 is provided at the bottom closest to the liquid collecting tank 32, so that all the detergent in the chamber can flow out through the one-way valve, thereby improving the discharge efficiency of the detergent.

[0052] Embodiment 2

[0053] like Figures 1 to 9As shown, this embodiment introduces an automatic dispensing device, which includes a detergent box 200 that can be pulled out and installed in a water box 100. The detergent box 200 is equipped with a pressure rod 22 with a plug-in connection at one end, and the other end of the pressure rod 22 is provided with a locking tongue 28 protruding outward, so that after the user presses the pressure rod, the locking tongue is retracted into the detergent box to release the locking state of the locking tongue.

[0054] A pressure rod that can be elastically deformed under the action of external force is installed on the detergent box, so that the user can press the pressure rod to make the lock tongue on the pressure rod shrink and move, thereby achieving the purpose of separating the lock tongue from the water box or locking it to a limited position.

[0055] In this embodiment, the detergent box 200 includes a shell and an upper cover 4 buckled on the top, a pressure rod 22 is installed on the upper cover 4, the front end of the pressure rod 22 is plugged into the upper cover 4, and the rear end is provided with an upwardly protruding locking tongue 28, so that after the user installs the pressure rod 22 downward, the rear end of the pressure rod 22 is elastically deformed and the locking tongue 28 is retracted into the detergent box 200.

[0056] In this embodiment, the pressure rod 22 is horizontally installed on the lower side of the upper cover 4, and the front end of the pressure rod 22 is correspondingly inserted into the slide groove 26 set on the lower side of the upper cover 4 and fixed with each other; the rear end of the pressure rod 22 is provided with a locking tongue 28 protruding upward, and the upper cover 4 is provided with an opening 74 for the locking tongue 28 to extend correspondingly, and the upper end of the locking tongue 28 is arranged beyond the upper surface of the upper cover 4; preferably, a circle of flange bent downward is provided at the opening 74 to guide the movement trajectory of the locking tongue 28 and prevent the locking tongue 28 from being separated from the opening 74.

[0057] In this embodiment, the locking tongue 28 includes a vertically arranged plate, the extension direction of the plate is perpendicular to the pulling and moving direction of the detergent box 200, and both ends of the plate are provided with flaps bent toward the rear end of the detergent box; preferably, the lower end of the locking tongue 28 is detachably connected to the pressure rod 22.

[0058] In this embodiment, a vertically extending mounting rod 77 is provided at the lower end of the locking tongue 28, and a radially protruding locking protrusion 29 is provided at the lower end of the mounting rod 77; a mounting section is provided at the front end of the pressure rod 22, and a locking groove 30 is provided at the mounting section for the mounting rod to be engaged with the mounting rod, and the front end or rear end of the locking groove 30 correspondingly increases the horizontal spacing to guide the mounting rod 77 to slide in and be engaged and fixed through the locking protrusion 29.

[0059] In this embodiment, the front and rear sides of the lock tongue 28 are respectively provided with a limit column 73 extending vertically upward, and the limit column 73 is arranged on the outer side of the flange of the opening 74, and the upper end surface of the limit column 73 is in contact with the lower side of the upper cover 4; preferably, two parallel guide ribs are provided on the lower side of the upper cover 4, and the guide ribs extend axially from the flange of the opening 74 along the pressure rod 22, and the limit column 73 is clamped in the gap between the two guide ribs.

[0060] In this embodiment, a pressing portion 23 protruding upward is provided in the middle of the pressure rod 22, and a pressing hole 75 for the pressing portion 23 to pass through is correspondingly provided on the detergent box upper cover 4, so that the user can apply a downward pressing force to the pressing portion 23, driving the rear end of the pressure rod 22 to produce downward elastic displacement, so that the locking tongue 28 is correspondingly retracted into the detergent box 200; preferably, the upper surface of the pressing portion 23 is arranged flush with the upper surface of the upper cover 4.

[0061] In this embodiment, a support rib 41 extending vertically upward is provided in the chamber, and the support rib 41 is correspondingly arranged vertically below the pressing portion 23. The top end of the support rib 41 is spaced apart from the lower side of the pressing portion 23 by a movable margin and supports and limits the pressing rod 22 after the pressing portion 23 is pressed downward to prevent the pressing rod 22 from falling off due to excessive downward elastic deformation.

[0062] In this embodiment, a slide groove 26 extending along the pulling direction of the detergent box is provided on the lower side of the upper cover 4. The gap between the two side walls of the slide groove 26 is provided for the corresponding insertion of the front end of the pressure rod 22. A blocking rib 25 connecting the two side walls is provided in the middle of the slide groove 26. The front end of the pressure rod 22 is provided with a locking protrusion 24 corresponding to the blocking rib 25, so that after the front end of the pressure rod 22 is correspondingly inserted into the slide groove 26, the locking protrusion 24 slides into the front side of the blocking rib 25 and is relatively locked and fixed.

[0063] In this embodiment, the rear end of the pressure rod 22 is arranged to one side relative to the front end, so that the user's pressing force on the middle part of the pressure rod 22 generates an oblique torque, thereby reducing the requirement for the pressing force, and further improving the convenience of the user in pressing the lock tongue.

[0064] When the user pulls the detergent box outward, after the detergent box is pulled outward to a certain distance, the lock buckle and the upper edge of the water box are limited and abutted against each other, and the detergent box can no longer be pulled outward; at this time, the pressing part in the middle of the pressure rod has been exposed to the outside of the water box, and the user presses the pressing part downward to cause the pressure rod to produce elastic deformation. After the lock buckle is disengaged from the upper edge of the water box, the user pulls the detergent box outward, and the detergent box can be pulled out of the water box, thereby achieving the purpose of disassembling the detergent box.

[0065] Embodiment 3

[0066] like Figures 1 to 9 As shown, this embodiment introduces an automatic dispensing device, which includes a detergent box 200, which is provided with at least one chamber for containing detergent; a float 11 floating on the liquid surface is provided in the chamber, a magnet 12 is provided in the float 11, and a reed switch 13 is correspondingly installed under the float 11 to detect the height of the float 11 accordingly and thus know the liquid level height in the detergent box chamber 200.

[0067] By installing a float that floats with the liquid surface in the detergent and softener storage chamber of the detergent box and detecting the magnet inside the float to obtain the height change of the float, the purpose of quickly and accurately detecting the liquid level height in the detergent box chamber is achieved, and an alarm is promptly issued to remind the user that the detergent and softener stored in the chamber is insufficient.

[0068] In this embodiment, a vertically extending connecting rod 9 is provided in the chamber, the upper end of the connecting rod 9 is hinged to the detergent box cover 4, and the lower end is fixedly connected to the float 11; preferably, two retaining ribs 10 protruding and extending downward are provided on the detergent box cover 4, and the connecting rod 9 is correspondingly clamped in the gap between the two retaining ribs 10, and the two sides of the connecting rod 9 are correspondingly fitted with the retaining ribs 10 to limit the movement of the connecting rod 9.

[0069] In this embodiment, the lower end of the connecting rod 9 is a bent section, the bent end extends in the horizontal direction, and the end of the bent section is fixedly connected to the upper part of one side of the float 11.

[0070] In this embodiment, the float 11 includes a hollow shell, which is fixedly connected to the outer side and the lower end of the connecting rod 9; the interior of the shell forms a sealed hollow chamber, and a magnet 12 is fixedly installed in the hollow chamber.

[0071] In this embodiment, the shell of the float 11 includes a corresponding upper cover 14 that is snap-fitted and closed, and the upper cover 14 is provided with a support rib 15 that protrudes downward. The magnet 12 is placed in the shell and placed on the bottom wall of the shell. The lower end of the support member 15 provided on the upper cover 14 is in limited contact with the upper surface of the magnet 12 to clamp and fix the magnet 12 between the support rib 15 and the bottom wall of the shell; preferably, the inner side wall of the shell is provided with a plurality of retaining ribs 16 extending toward the center and arranged at intervals, and the outer side of the magnet 12 is in limited contact with the extended end of each retaining rib 16 to clamp and install the magnet 12 in the shell to prevent horizontal displacement.

[0072] In this embodiment, the detergent box 200 can be pulled out and installed in the water box 100, and a reed switch 13 is fixedly installed on the lower side of the water box 100. The reed switch 13 is located vertically below the float 11 after the detergent box 200 is pushed into the water box 100, so as to send a liquid shortage alarm prompt signal when the float 11 drops to a set height.

[0073] In this embodiment, the detergent box 200 includes a softener chamber 21 and a detergent chamber 8 which are relatively independently arranged on the left and right, and a relatively independent washing powder chamber 20 is provided in the middle of the detergent chamber 8; floats 11 for detecting the liquid level height of the softener and the detergent are respectively installed in the softener chamber 21 and the detergent chamber 8, and reed switches 13 for detecting the height of the float 11 are respectively provided below the softener chamber and the detergent chamber.

[0074] In this embodiment, a downwardly recessed detection groove 18 for the float 11 to fall into is provided in the middle area of ​​the bottom of the chamber, so that the float 11 falls into the detection groove 18 when it drops to the bottom of the chamber; the detection groove 18 is connected with the liquid outlet 33 on the rear side of the chamber through the downwardly recessed flow channel 31 at the bottom of the chamber; preferably, the bottom of the detection groove 18 is flush with the bottom of the flow channel 31; or the bottom of the detection groove 18 is an inclined surface that is inclined downward in the direction of the flow channel 31.

[0075] In this embodiment, a vertical support rib 19 extending radially toward the center of the detection groove 18 is provided in the detection groove 18, and the upper end of the support rib 19 contacts the bottom of the float 11 to support the float 11 to prevent it from sticking to the residual detergent in the detection groove.

[0076] Embodiment 4

[0077] like Figures 1 to 9 As shown, this embodiment introduces an automatic dispensing device, which includes a detergent box 200 installed in a water box 100, and at least one chamber for storing detergent is provided in the detergent box 200; a reed switch 13 is installed on the outer wall of the water box 100, and the reed switch 13 is installed corresponding to the magnet 12 provided on the float 11 floating with the liquid level in the chamber. The reed switch 13 performs proximity detection on the position of the magnet 12 to accurately detect the height of the float 11 and then know the height of the liquid level in the chamber.

[0078] By installing a reed switch at the bottom of the water box, the magnet on the float at the corresponding position in the chamber can be accurately detected. When the float drops to the empty liquid level, the reed switch detects the magnet and issues an alarm to remind the user to add detergent or other corresponding liquid to the chamber. At the same time, since the reed switch is set outside the water box, it avoids contact between the reed switch and the liquid inside the water box, which greatly improves the reliability of the liquid level detection device.

[0079] In this embodiment, a bracket 35 is installed at the lower part of the bottom wall of the water box 100 , and the reed switch 13 is clamped and fixed between the bracket 35 and the bottom wall of the water box 100 .

[0080] In this embodiment, a fixing rib 39 protruding outward is provided on the lower side of the bottom wall of the water box 100, and a groove is provided on the lower side of the fixing rib 39, and the reed switch 13 is correspondingly clamped in the groove of the fixing rib 39; preferably, a plurality of fixing ribs 39 arranged in parallel and spaced apart are provided on the lower side of the bottom wall of the water box 100, and a groove is provided on the lower side of each fixing rib 39 for correspondingly clamping and fixing the outer side of the reed switch 13, so that the multiple parts of the reed switch 13 are clamped and fixed one by one with each fixing rib 39.

[0081] In this embodiment, the bracket 35 is horizontally arranged, and the bracket 35 at least covers the groove of the fixing rib 39 . The upper surface of the bracket 35 is correspondingly fitted with the reed switch 13 , so that the reed switch 13 is correspondingly clamped and fixed between the bracket 35 and the water box 100 .

[0082] In this embodiment, the bracket 35 is fixed and tightened on the water box 100 by at least one screw 36. Preferably, the two ends and the middle of the bracket 35 are fixedly connected to the water box 100 by a corresponding screw 36. In this embodiment, a screw column 37 protruding outward is provided on the lower side of the bottom wall of the water box 100. The screw column 37 is arranged to fit in correspondence with the upper surface of the bracket 35. The screw column 37 is provided with a screw hole extending in the axial direction, so that the screw 36 passes through the bracket 35 and is screwed to the screw hole on the screw column 7.

[0083] In this embodiment, a guide rib 38 protruding and extending downward is provided on the lower side of the bottom wall of the water box 100. The guide rib 38 is plugged into the bracket 35 to pre-position the installation position of the bracket 35. The user can directly pre-position the bracket 35 at a specific position through the corresponding plugging of the guide rib 38, and then screw it with the screw 36 to achieve the purpose of quickly positioning and installing the reed switch 13.

[0084] In this embodiment, an upwardly recessed groove 40 is provided on the lower side of the bottom wall of the water box 100, and the bracket 35 is correspondingly embedded and installed in the groove 40; preferably, the lower surface of the bracket 35 is arranged flush with the lower side of the bottom wall of the water box 100 to reduce the overall height of the water box and reduce the installation space of the automatic dispensing device.

[0085] Embodiment 5

[0086] like Figures 1 to 9 As shown, this embodiment introduces an automatic dispensing device, which includes a detergent box 200 that can be pulled out and movably installed in a water box 100, and an injection port 2 for adding detergent to the internal detergent chamber is provided at the top of the detergent box 200; a guide groove 1 is provided at the top of the detergent box 200, one end of the guide groove 1 is connected to the injection port 2, and the other end extends to the periphery of the detergent box 200, so that the liquid overflowing from the injection port 2 flows along the guide groove 1 to the periphery of the detergent box 200 and falls into the lower part of the water box 100 along the gap between the detergent box 200 and the water box 100.

[0087] A guide groove is provided on the top of the detergent box so that the detergent water overflowing during the process of adding detergent can be drained to the corresponding position of the outer periphery of the washing machine through the guide groove and fall into the lower part of the water box through the gap at the corresponding position, thereby preventing the detergent water from randomly flowing on the top surface of the detergent box, affecting the user's physical experience, or even flowing out of the water box from the draw-out opening of the detergent box.

[0088] In this embodiment, the detergent box 200 includes an upper cover 4 that is buckled on the top of the shell, and the upper cover 4 is provided with a detergent injection port 2 for injecting detergent and water into the detergent powder chamber 20 in the detergent box 200. The detergent injection port 2 is arranged at the front of the upper cover 4, and a downwardly recessed guide groove 1 is provided on the upper surface of the upper cover 4. The injection port 2 is arranged at one end of the guide groove 1, and the other end of the guide groove 1 extends to the rear side of the detergent box.

[0089] In this embodiment, the guide groove 1 extends along the pulling direction of the detergent box, and a washing powder injection port 2 is provided at the front end of the guide groove 1. The rear end of the guide groove 1 extends to the rear side of the detergent box 200. There is a certain gap between the rear side of the detergent box 200 and the rear side wall of the water box 100 to guide the overflow water to flow into the lower part of the water box 100; preferably, the washing powder injection port 2 is provided at the bottom of the front end of the guide groove 1; further preferably, the height of the washing powder injection port 2 is lower than the bottom of the guide groove 1.

[0090] In this embodiment, blocking walls for blocking water flow are respectively provided on the front side and the left and right sides of the guide groove 1. The blocking walls are composed of inclined surfaces which are gradually inclined from bottom to top toward the outside of the guide groove. The rear side of the guide groove 1 is open to facilitate overflow water to flow out, so that the overflowed washing powder water can flow backward along the guide groove 1 and be guided to the rear side of the detergent box, thereby avoiding the problem of overflow at the front end of the detergent box and affecting the user's physical experience.

[0091] In this embodiment, the radial width of the rear portion of the guide groove 1 gradually narrows to guide the overflow water to converge and flow toward the middle; preferably, the rear portion of at least one side wall of the guide groove 1 is a transition surface extending toward the middle, so that the rear portion of the guide groove 1 is in a gradually narrowing trumpet shape; further preferably, the transition surface is in a smooth arc shape to reduce the residual water flow in the guide groove.

[0092] Embodiment 6

[0093] like Figures 1 to 9 As shown, this embodiment introduces an automatic dispensing device, in which a detergent box 200 can be pulled out and installed in a water box 100, and the detergent box 200 includes an open shell and an upper cover 4 that is buckled at the top opening of the shell, one side of the upper cover 4 is plugged into the shell correspondingly, and the other side is buckled and engaged with the shell correspondingly, so that the upper cover 4 is fixedly buckled at the top opening of the shell.

[0094] The top of the detergent box is provided with an upper cover that can be opened and closed and fixedly connected, so that the upper cover of the detergent box and the detergent box shell bracket are directly fixedly connected through buckles, and the connection is wrapped and sealed, thereby achieving the purpose of quick clamping and fixing installation between the upper cover and the detergent box shell and effectively improving the sealing of the detergent box.

[0095] like Fig.18As shown, in this embodiment, at least one downwardly protruding support rib 86 is provided on the lower side of the middle part of the upper cover 4, and the support rib 86 is in contact with the limiting support corresponding to the dividing rib 87 inside the detergent box 200 for dividing different chambers; preferably, the top of the dividing rib 87 is provided with a groove corresponding to the lower end of the support rib 86, so that the support rib 86 and the dividing rib 87 are correspondingly plugged and fixedly connected, and the bottom end of the support rib 86 is in contact with the top end of the dividing rib 87 toward the limiting support, so as to increase the supporting strength of the upper cover 4.

[0096] In this embodiment, the front side of the upper cover 4 is provided with at least one claw 6 protruding outward and extending in parallel, and the front side of the detergent box housing is provided with a blocking portion 83 protruding upward, and the blocking portion 83 is provided with a bayonet corresponding to the claw 6. Preferably, the claw 6 includes a plug-in rib 78 protruding vertically downward, and the top of the blocking portion 83 is provided with a slot 79 corresponding to the plug-in rib 78, so that the contact between the two forms a sealed plug-in surface to prevent the detergent in the detergent box from flowing out; the bottom surface of the claw 6 is also provided with at least one downwardly protruding clamping protrusion, and the top surface of the blocking portion 83 is provided with a clamping groove corresponding to the clamping protrusion. After the upper cover 4 is buckled, the clamping protrusion is fixedly engaged with the clamping groove, thereby ensuring the fixed assembly between the upper cover and the detergent box housing. Preferably, a clamping protrusion 85 is provided at the left and right ends and the middle of the claw, respectively.

[0097] In this embodiment, the rear side of the upper cover 4 is provided with a buckle 5 extending vertically downward and having an opening, and the rear side of the detergent box 200 is provided with a retaining rib 17 protruding backward and extending vertically, and the retaining rib 17 is correspondingly inserted into the opening provided on the buckle 5; preferably, the retaining rib 17 is gradually inclined outward from top to bottom to guide the buckle 2 to produce elastic deformation and slide downward until the upper cover 4 is correspondingly buckled with the opening of the detergent box 200, so that the retaining rib 17 is correspondingly inserted into the opening provided on the buckle 5. Preferably, two buckles are provided on the rear side of the upper cover, and the two buckles are respectively located near the left and right ends of the upper cover to ensure the stability of the upper cover rear clamping, thereby making the buckling and fixing between the upper cover and the detergent box 200 housing more secure.

[0098] In this embodiment, the outer periphery of the upper cover 4 is provided with a circle of lower flange 81 bent downward, and the lower flange 81 fits and wraps the open part of the shell to seal and cover the snap-fit ​​connection between the upper cover 4 and the shell; preferably, the open part of the shell is provided with a circle of slots 79 protruding upward, and the lower surface of the upper cover 4 is provided with a circle of corresponding plug-in ribs 78 extending downward, so that when the upper cover 4 is snap-fitted to the open part of the detergent box 200, the plug-in ribs 78 are correspondingly inserted into the slots 79 to enhance the sealing of the connection.

[0099] like Fig.14 and Fig.15As shown, in this embodiment, the outer periphery of the upper cover 4 is provided with a circle of lower flange 81 bent vertically downward, and the top of the housing of the detergent box 200 is provided with a circle of sealing ribs 84 protruding outward, and the outer periphery of the sealing rib 84 is sealed and fitted with the inner wall of the lower flange 81 to form a surface seal at the connection between the upper cover and the housing of the detergent box.

[0100] At the same time, an inner snap-in protrusion 80 protruding inward is provided on the inner side of the lower flange 81, and an outer snap-in protrusion 82 protruding outward is provided on the outer periphery of the sealing rib 84. The inner snap-in protrusion 80 is correspondingly arranged on the lower side of the outer snap-in protrusion 82, so that the two snap-in protrusions are correspondingly clamped and fixed after the upper cover 4 is buckled, thereby realizing the fixed assembly between the upper cover and the detergent box shell.

[0101] In this embodiment, a circle of vertically extending plug ribs 78 is further provided on the lower side of the upper cover 4, and the plug ribs 78 extend along the shell side wall of the detergent box 200. A slot 79 corresponding to the plug rib 78 is provided on the top of the shell side wall, so that after the upper cover 4 is buckled, the lower end of the plug rib 78 is correspondingly inserted into the slot 79, and the inner and outer sides of the plug rib 78 are sealed and fitted with the side wall of the slot 79, thereby realizing the sealing of the connection between the upper cover 4 and the detergent box 200 shell through the plug rib 78, and further improving the sealing effect of the buckled connection at the outer periphery of the upper cover 4 of the detergent box.

[0102] Embodiment 7

[0103] like Figures 1 to 9 As shown, this embodiment introduces an automatic dispensing device, which includes a detergent box 200 installed in a water box 100, a washing powder chamber 20 is provided on the detergent box 200, and a water outlet 42 is provided at the bottom of the washing powder chamber 20; a water retaining structure is provided at the water outlet 42 to guide the water flow from vertically downward to horizontally flowing out of the washing powder chamber.

[0104] By arranging a water outlet with a water retaining structure under the detergent box, the washing powder water can flow out of the washing powder chamber horizontally from the water outlet, thereby improving the smoothness of water outlet and avoiding the occurrence of choking of water flowing from the water outlet into the washing powder chamber; at the same time, the accumulated water inside the water box is separated from the water outlet by the water retaining structure, thereby preventing the occurrence of water stored in the lower part of the water box flowing back into the washing powder chamber through the water outlet.

[0105] In this embodiment, a water outlet cavity 45 is provided on one side of the detergent chamber 20, which is concave downward and protrudes from the bottom wall of the detergent box 200. A vertical water outlet 42 is provided on one side wall of the water outlet cavity 45 to allow the detergent water in the detergent chamber to flow out.

[0106] In this embodiment, the water outlet chamber 45 is arranged at the rear side of the washing powder chamber 20, and the front side of the washing powder chamber 20 is provided with an injection port 2 for water and washing powder injection; the front side wall of the water outlet chamber 45 is provided with a vertically arranged water outlet 42, so that the washing powder water flowing out of the washing powder chamber 20 flows out horizontally forward, thereby avoiding the washing powder water from diffusing backwards during the falling process and splashing with other components at the rear of the water box 100, and making the washing powder water flow directly to the front side of the water box, and flow into the interior of the washing machine along the channel set on the front side of the water box, thereby improving the smoothness of the operation of the automatic dispensing device.

[0107] In this embodiment, a slope 44 which gradually slopes downward from the water outlet to the front is provided at the bottom of the detergent box in front of the water outlet 42 to guide the outlet water flow to flow obliquely downward; preferably, the upper side of the slope 44 is arranged flush with the upper side edge of the water outlet 42, and the lower side of the slope 44 is arranged flush with the middle part of the water outlet 42; further preferably, a horizontally extending transition surface is provided between the upper side of the slope 44 and the upper side edge of the water outlet 42.

[0108] In this embodiment, vertically extending water retaining ribs 43 are respectively provided on both sides of the inclined surface 44 to prevent the outlet water from spreading to both sides; preferably, the extension direction of the water retaining ribs 43 is parallel to the axial direction of the water outlet 42; further preferably, the rear sides of the two water retaining ribs 43 are sealed and connected to the corresponding sides of the water outlet 42.

[0109] In this embodiment, the bottom of the water outlet cavity 45 is configured as a curved surface or inclined surface that gradually slopes downward from the left and right sides to the middle, so as to guide the water flow in the water outlet cavity 45 to converge and flow toward the middle of the water outlet 42, thereby preventing the water flow from spreading to both sides.

[0110] In this embodiment, the rear side of the washing powder chamber 20 is a water outlet 48, and the extension direction of the water outlet 48 is perpendicular to the pulling and moving direction of the detergent box 200; one side and the front side and the rear side of the water outlet 48 are sealed respectively, and the other side is connected with the main body of the washing machine powder chamber 20; the bottom wall of the water outlet 48 is recessed downward to form a water outlet chamber 45, and the bottom of the front side wall of the water outlet 48 is provided with an opening to form a water outlet 42; preferably, the width of the water outlet 48 is smaller than the width of the main body of the washing powder chamber 20 to increase the pressure of the outlet water flow.

[0111] In this embodiment, the washing powder chamber 20 includes a water inlet 46, a connecting portion 47 and a water outlet 48 which are arranged in sequence from front to back. An injection port 2 is provided at the top of the water inlet 46; the connecting portion 47 extends along the pulling and moving direction of the detergent box drawer 200, the front end of the connecting portion 47 is connected to the rear side of the water inlet 46, the rear end of the connecting portion 47 is connected to the left side of the water outlet 48, and the radial width of the connecting portion 47 gradually narrows from front to back.

[0112] In the present embodiment, the bottom wall of the powder chamber 20 is an inclined surface inclined from the injection port toward the water outlet, so as to guide the incoming water in the powder chamber 20 of the washing machine to converge and flow toward the water outlet 42; preferably, the bottom wall of the water outlet chamber 45 is divided into an inclined portion, a horizontal portion and a vertical portion from the side connected to the main body of the powder chamber 20 to the opposite side, the inclined portion is an inclined surface gradually inclined downward toward the horizontal portion, the bottom of the inclined portion is connected to the horizontal portion extending horizontally, the vertical portion extends along the vertical surface, the lower end of the vertical portion is connected to the horizontal portion, and the upper end is sealed and connected to the shell of the detergent box 200.

[0113] Embodiment 8

[0114] like Figures 1 to 9 As shown, this embodiment introduces an automatic dispensing device, which includes a detergent box 200, which is provided with at least one chamber for containing detergent; a liquid injection port 3 is provided on the top of the chamber, and a convex rib 50 protruding downward is provided on one side of the liquid injection port 3, and at least one horizontal scale line is provided on the convex rib 50, and each horizontal scale line is respectively and one by one arranged flush with the liquid level of the corresponding amount of detergent in the chamber.

[0115] In this embodiment, the chamber of the detergent box 200 is provided with a plurality of horizontal scale lines, and each horizontal scale line is arranged flush with the liquid level of a detergent of a different dosage, so as to respectively prompt the user to add a corresponding amount of detergent into the chamber.

[0116] A downwardly protruding rib is provided at the cavity filling port of the detergent box, and a scale line is provided on the rib to prompt the user to inject a corresponding height of the maximum value of detergent, thereby preventing the user from injecting too much detergent into the cavity and causing overflow.

[0117] In this embodiment, the liquid injection port 3 is a horizontally arranged square opening, and the convex rib 50 is arranged in the middle of the rear side of the square opening so that the user can visually observe the scale line of the convex rib after pulling out the detergent box.

[0118] In this embodiment, the convex rib 50 extends along an inclined surface that gradually tilts forward from top to bottom, and the scale line is set on the front side of the convex rib 50, so that the front side of the convex rib 50 is correspondingly set obliquely upward, further facilitating the user to observe the scale line.

[0119] Preferably, in this embodiment, the lower side edge of the rib 50 extends along the horizontal line, and the bottom edge of the horizontally arranged rib 50 forms a horizontal scale line, so as to remind the user to stop injecting detergent when the detergent liquid level is flush with the lower side edge of the rib during the detergent injection process. Further preferably, the horizontal scale line formed by the bottom edge of the rib 50 is flush with the liquid level height of the maximum amount of detergent stored in the chamber.

[0120] In this embodiment, the detergent box 200 includes a detergent chamber 8 and a softener chamber 21. The tops of the detergent chamber 8 and the softener chamber 21 are respectively provided with corresponding liquid injection ports 3. One side of the two liquid injection ports 3 is respectively provided with a downwardly protruding rib 50, so that the maximum liquid storage height of the detergent chamber or the softener chamber can be indicated by the horizontal scale line provided on the rib.

[0121] In this embodiment, a cover plate 7 is provided on the liquid injection port 3 to cover the liquid injection port 3. One side of the cover plate 7 is hinged to the detergent box 200, so that the cover plate 7 can be turned upward and opened and closed and installed on the detergent box 200. Preferably, the rear side of the cover plate 7 is hinged to the rear side of the square liquid injection port 3, so that the cover plate 7 can be turned around the rear side of the cover plate 7 from front to back to open and close.

[0122] In this embodiment, a handle portion 72 protruding outward and extending horizontally is provided on one side of the cover plate 7. There is a certain gap between the handle portion 72 and the top wall of the detergent box 200, so that the user can use the handle portion 72 to open the cover plate.

[0123] In this embodiment, a circle of guide surface 51 is provided on the top wall of the detergent box at the periphery of the injection port 3. The guide surface 51 is a conical surface that gradually slopes downward from the outer periphery to the inner periphery to guide the added detergent to flow from the injection port into the chamber.

[0124] In this embodiment, the inclined angle between the guide surface 51 and the horizontal plane is smaller than the inclined angle between the convex rib 50 and the horizontal plane, so as to further increase the inclined angle of the convex rib and maximize the convenience for users to observe the scale lines set on the convex rib.

[0125] Embodiment 9

[0126] like Figures 1 to 11 As shown, this embodiment introduces an automatic dispensing device, which includes a detergent box 200 installed in a water box 100, and the detergent box 200 is provided with at least one chamber for containing detergent; the washing machine water inlet pipe 49 is connected to the spray port 58 or the washing powder water inlet 76 provided on the water box 100, and a venturi tube 54 is provided on the water inlet pipe 49, and a negative pressure hole 53 is provided on the venturi tube 54, and the negative pressure hole 53 is connected to the liquid outlet 33 of the chamber, so as to pump the detergent stored in the chamber into the inlet water flow, and flow into the water box from the spray port 58 together with the inlet water flow. Preferably, the outlet of the venturi tube 54 is connected to the mixing chamber 91, so that the extracted detergent and the inlet water are mixed inside the mixing chamber 91, and then connected to the spray inlet flow channel 57 through the outlet of the mixing chamber 91, and then flow out through the spray port 58 provided at the end of the spray inlet flow channel 57.

[0127] In this embodiment, the detergent box 200 is provided with a detergent chamber 8 and a softener chamber 21 for storing the detergent box softener respectively. The detergent chamber liquid outlet 33 and the softener chamber liquid outlet 33 and the water inlet pipe 49 are respectively connected to the three inlets of the reversing valve 52 in a one-to-one correspondence. The outlet of the reversing valve 52 is connected to the negative pressure hole 53 through the suction channel 64 to transport the detergent, softener or water to the water inlet flow accordingly.

[0128] In this embodiment, the small end of the venturi tube 54 is connected to the water inlet pipe 49, and the large end is connected to the spray port 58 through the spray water inlet channel 57. A negative pressure hole 53 is provided at the aperture gradient of the venturi tube 54. In this embodiment, the water inlet pipe 49 includes a cold water inlet pipe 63 and a hot water inlet pipe 62 to flow a temperature-controllable water inlet flow into the automatic delivery device.

[0129] In this embodiment, a flow sensor 61 for detecting the amount of detergent flowing through is provided on the suction channel 64; preferably, the flow sensor 61 is provided at the connecting end of the suction channel 64 and the venturi tube 54 to check the water flow out of the suction channel, thereby indirectly obtaining the amount of detergent flowing in.

[0130] In this embodiment, both ends of the washing powder water injection channel 77 are connected to the water inlet pipe 49 and the washing powder water inlet 76 respectively; the washing powder water inlet 76 is arranged corresponding to the injection port 2, so that after the detergent box 200 is pushed into the water box 100, the washing powder water inlet 76 is located vertically above the injection port 2, and the washing machine inlet water flows through the washing powder water injection channel 77, the washing powder water inlet 76, and the injection port 2 into the washing powder chamber 20, and the washing powder put into the washing powder chamber 20 is flushed to the lower part of the water box 100.

[0131] In this embodiment, the top of the water box 100 is composed of a top cover plate 55, and a corresponding horizontally laid sealing plate 56 is provided on the lower side of the top cover plate 55. The top cover plate 55 and the sealing plate 56 are welded together by a fusion process. A sealed flow channel structure for water flow is formed between the top cover plate 55 and the sealing plate 56. Part of the flow channel structure constitutes a spray water inlet flow channel 57, part of the flow channel structure constitutes a suction flow channel 64, and part of the flow channel structure constitutes a washing powder water injection flow channel 77. The ends of the spray water inlet flow channel and the suction flow channel and the washing powder water injection flow channel 77 respectively pass through the sealing plate to form a joint.

[0132] Embodiment 10

[0133] like Figures 1 to 11As shown, this embodiment introduces an automatic dispensing device, which includes a detergent box 200 installed inside a water box 100. The detergent box 200 is provided with at least one chamber for containing detergent, and a liquid outlet 33 of the chamber is connected to a negative pressure suction structure via a suction channel 64; the suction channel 64 is arranged in a spiral shape at the top of the water box 100 to maximize the length of the suction channel.

[0134] A spiral suction channel is provided on the water box to extend the length of the suction channel as much as possible and thus expand the volume of the suction channel, so that the amount of detergent drawn into the suction channel by the automatic dispensing device at a single time is increased, thereby achieving the purpose of increasing the single dispensing amount of the automatic dispensing device and improving the detergent dispensing efficiency.

[0135] In this embodiment, the suction flow channel 64 is connected to the chamber liquid outlet 33 or the washing machine water inlet pipe 49 through the reversing valve, so that the detergent or the inlet water can flow into the suction flow channel 64 in a controllable manner.

[0136] In this embodiment, the top of the water box 100 is composed of a top cover plate 55, and a corresponding horizontally laid cover plate 56 is provided on the lower side of the top cover plate 55. The top cover plate 55 and the cover plate 56 are welded together by a fusion process. A flow channel structure for water flow is formed between the top cover plate 55 and the cover plate 56. Part of the flow channel structure constitutes a suction flow channel 64. The water inlet end of the suction flow channel 64 passes through the cover plate 56 and is connected to the outlet of the reversing valve 52, and the water outlet end passes through the cover plate 56 and is connected to the negative pressure suction structure.

[0137] In this embodiment, the suction channel 64 extends from the water inlet end provided at the rear side of the water box 100 to the front side of the water box 100 to at least the middle of the water box 100 and then circles back to the water outlet end at the rear side of the water box 100; at least one folding portion 65 that is folded and coiled is provided in the middle of the suction channel 64; preferably, a plurality of parallel folding portions 65 are provided in the middle of the suction channel 64, and the extension direction of each folding portion 65 is perpendicular to the pulling direction of the detergent box 200.

[0138] In this embodiment, a flow sensor 61 for detecting the amount of detergent drawn in is provided on the suction flow channel 64; preferably, the flow sensor 61 is provided at the connection end of the suction flow channel 64 and the negative pressure suction structure to detect the amount of water flowing out of the suction flow channel, thereby indirectly obtaining the amount of detergent sucked into the suction flow channel.

[0139] In this embodiment, the detergent box 200 is provided with a detergent chamber 8 and a softener chamber 20 for storing detergent and softener respectively, and the bottoms of the detergent chamber 8 and the softener chamber 20 are respectively provided with liquid outlets 33; the reversing valve 52 is provided with three inlets, which are respectively connected with the detergent chamber liquid outlet 33, the softener chamber liquid outlet 33 and the washing machine water inlet pipe 49 in a one-to-one correspondence, and the water outlet of the reversing valve 52 is connected with the inlet end of the suction flow channel 64, so that detergent, softener or water can flow into the suction flow channel in a controllable manner.

[0140] Embodiment 11

[0141] like Figures 1 to 11 As shown, this embodiment introduces an automatic dispensing device, which includes a spray water inlet channel 57 for flowing the pumped detergent into the water box 100, and the spray water inlet channel 57 is provided with an air vent 66 connected to the outside, and a control valve 67 is provided at the air vent 66, so that when water flows through the spray water inlet channel 57, the valve plug 68 of the control valve 67 is affected by the water pressure and blocks the air vent 66 accordingly; when there is no water flowing through the spray water inlet channel 57, the valve plug 68 of the control valve 67 automatically resets to open the air vent 66, so that the residual water in the spray water inlet channel 57 automatically flows out due to gravity.

[0142] By arranging an air vent with a control valve on the spray water inlet channel, the control valve automatically opens the air vent after the automatic dispensing device stops working, so that the remaining water in the spray water inlet channel automatically flows out from the spray port due to the pressure difference between the inside and outside of the spray water inlet channel, thereby avoiding the occurrence of dripping water after the user opens the washing machine door, thereby preventing the residual water in the water channel from breeding bacteria and the residual water in the water channel from freezing and causing the water channel to crack at extremely low temperatures.

[0143] In this embodiment, the control valve 67 includes a valve plug 68 installed on the inner side of the air vent. The valve plug 68 can be pushed outward along the axial direction of the opening under the action of water pressure to block the air vent 66. A return spring 71 is provided between the valve plug 68 and the inner wall of the spray water inlet channel 57 to apply an elastic force to the valve plug 68 to drive it to open the opening.

[0144] In this embodiment, the valve plug 68 includes a mounting portion 69 extending along the axial direction of the opening, and a sealing ring 70 sleeved on the mounting portion 69 .

[0145] like Fig.18 and Fig.19As shown, in this embodiment, the return spring 71 is sleeved on the outer periphery of the mounting portion 69, one end of the return spring 71 is in contact with the flange 89 horizontally bent outward at the second end of the mounting portion 69, and the other end is in contact with the inner wall of the spray water inlet channel 24. Preferably, the upper end of the return spring 71 is in contact with the lower side of the flange 89 provided at the upper end of the mounting portion 69, and the lower end of the return spring 71 is in contact with the upper side of the inner flange 90 horizontally bent inward of the air vent 66, so that the valve plug 68 is installed on the inner side of the air vent 66 under the support of the return spring 71 without being separated. More preferably, the outer diameter of the flange 89 protruding outward provided at the upper end of the mounting portion 69 is larger than the inner diameter of the air vent 66, which further prevents the valve plug 68 from being separated from the air vent 66.

[0146] In this embodiment, a sleeve protruding outward is provided on the spray water inlet channel 57, and a coaxially arranged air hole 66 is provided at the protruding end of the sleeve, and the other end of the sleeve is connected to the spray water inlet channel 57, and the valve plug 68 of the control valve 67 is axially arranged and installed inside the sleeve; preferably, the second end of the mounting portion 69 is arranged to fit corresponding to the inner wall of the sleeve, the radial width of the stop rib provided at the first end of the mounting portion 69 is greater than the diameter of the air hole 66, and the radial width of the sealing ring 70 is greater than the diameter of the air hole 66.

[0147] In this embodiment, a support rib extending vertically upward is provided on the bottom wall of the spray water inlet channel 57, and the upper end of the support rib is in supporting contact with the valve plug 68; preferably, there is a certain gap between the support rib and the two side walls of the spray water inlet channel 57 to allow water to flow through; further preferably, the support rib is in supporting contact with the valve plug 68 at the center of gravity, and the upper end surface of the support rib is a smooth horizontal supporting surface.

[0148] In this embodiment, the water inlet end of the spray water inlet channel 57 is connected to the negative pressure suction structure, and the end of the spray water inlet channel 57 is provided with a spray port 58 for spraying water into the water box 100, and the air hole 66 is arranged on the spray water inlet channel 57 near the water inlet end.

[0149] In this embodiment, the top of the water box 100 is composed of a top cover plate 55, and a corresponding horizontally laid cover plate 56 is provided on the lower side of the top cover plate 55. The top cover plate 55 and the cover plate 56 are welded together by a fusion process. A sealed flow channel structure for water flow is formed between the top cover plate 55 and the cover plate 56. Part of the flow channel structure constitutes a spray water inlet channel 57. The water inlet end of the spray water inlet channel 57 passes through the cover plate 56 and is connected to the negative pressure suction structure, and the end is provided with a spray port 58 that passes through the cover plate 56 and is connected to the lower part of the water box 100.

[0150] In this embodiment, the cover plate 56 is provided with an air hole 66 for connecting the spray water inlet channel 57 with the interior of the water box 100 , and a vertically arranged control valve 67 is installed on the air hole 66 .

[0151] In this embodiment, the suction channel 64 is connected to the spray water inlet channel 57 through the suction negative pressure structure. Two spray ports 58 for spraying water into the water box are provided at the end of the spray water inlet channel 57. A water uniforming rib 59 is provided between the two spray ports 58 to allow the incoming water to flow evenly to the two spray ports 58.

[0152] In this embodiment, the end of the spray water inlet channel 57 is provided with two forked and separated branch channels, and a spray port 58 is respectively provided on the two branch channels; the end forked portion of the spray water inlet channel 57 has a water uniforming chamber 60, and the water uniforming chamber 60 is provided with a water uniforming rib 59 perpendicular to the water flow direction to guide the incoming water flow to flow evenly to the branch channels on both sides; preferably, the water uniforming rib 59 is provided in the middle of the water uniforming chamber 60, and the two sides of the water uniforming rib 59 are respectively separated from the two side walls of the water uniforming chamber 60 by a certain gap.

[0153] In this embodiment, the spray port 58 is disposed at the front of the water box 100 so that the spray water flows directly to the water outlet disposed at the front side of the bottom of the water box 100 and flows into the washing drum of the washing machine.

[0154] Embodiment 12

[0155] This embodiment introduces a control method for an automatic dispensing device, in which the detergent stored in the chamber is pumped into the suction channel and then mixed with the incoming water before flowing into the water box. During the process of pumping the detergent, the incoming water of the detergent box is pumped into the suction channel at intervals to detect the amount of incoming water flowing out of the suction channel and accurately know the amount of detergent pumped.

[0156] Through the above method, the flow sensor only needs to detect the incoming water to achieve the purpose of accurate quantitative detection of the amount of detergent added; at the same time, it effectively avoids the occurrence of problems such as insufficient detection accuracy of the flow sensor due to the different viscosities of the detergent and the incoming water flow.

[0157] In this embodiment, the suction flow channel is alternately connected to the detergent storage chamber and the water inlet pipe at regular time intervals to alternately suck detergent and take in water; during the time period when the detergent storage chamber is connected to the suction flow channel, the amount of water flowing out of the suction flow channel is detected, and the detected value is the amount of detergent pumped corresponding to this process.

[0158] In this embodiment, the interval time period needs to be less than the time it takes for all the detergent to flow into the suction channel; preferably, the connection time between the suction channel and the detergent storage chamber and the water inlet pipe is different values, and the connection time between the suction channel and the detergent storage chamber is less than the ratio of the suction channel volume to the detergent flow rate.

[0159] In this embodiment, the switching time node of the reversing valve provided at the inlet of the suction flow channel can be judged such that when the set time period t1 is reached, it is automatically determined that all the detergent in the suction flow channel has been discharged, and it is switched to be connected to the water inlet accordingly; and when the set time period t2 is reached, it is automatically determined that the suction flow channel is completely filled with the water inlet, and it is switched to be connected to the detergent accordingly.

[0160] The following method can also be used to automatically determine the medium in the suction flow channel and then determine the switching time node; for example: when the suction flow channel is connected to the detergent storage chamber, if the detection accuracy of the flow sensor changes, it is determined that the suction flow channel is completely filled with detergent, then the suction flow channel is switched to be connected to the water inlet pipe, and the single amount of detergent added is the maximum volume of the suction flow channel.

[0161] Alternatively, a quantitative method is used to determine the medium in the suction flow channel, thereby determining the switching time node; for example: when the suction flow channel is switched to the time node connected to the detergent storage chamber, the measurement value of the flow sensor is accumulated to obtain the water output out of the suction flow channel, and when the measured water output reaches the single maximum discharge volume of the suction flow channel, the reversing valve is adjusted to connect the suction flow channel with the water inlet pipeline, and after the water inlet time reaches the set time T, the detergent in the flow channel is completely flushed, and then the reversing valve is adjusted to connect the suction flow channel with the detergent storage chamber, and the detergent extraction program is executed again.

[0162] In this embodiment, the specific process of the automatic delivery device control method is as follows:

[0163] Step S1. The automatic delivery device starts working;

[0164] Step S2. The suction flow channel is connected to the water inlet pipeline until water flows out of the suction flow channel;

[0165] Step S3. The suction channel is connected to the detergent storage chamber, and the detergent begins to be pumped into the suction channel;

[0166] Step S4. Detect the amount of water flowing out of the suction channel and determine whether the detected value reaches the set amount of water; if it reaches the set amount, execute step S6; if not, execute step S5;

[0167] Step S5. Determine whether detergent flows out of the suction channel; if so, stop the detection, add the detection value to the accumulated value, and execute step S6; if not, continue to pump detergent;

[0168] Step S6. The suction flow channel is connected to the water inlet pipeline until water flows out of the suction flow channel;

[0169] Step S7. Determine whether the accumulated value reaches the set delivery amount; if so, execute step S8; if not, execute step S3;

[0170] Step S8: The automatic delivery device stops working.

[0171] The above is only a preferred embodiment of the present invention, and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment, it is not used to limit the present invention. Any technician familiar with this patent can make some changes or modify the technical contents suggested above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention without departing from the content of the technical solution of the present invention still fall within the scope of the solution of the present invention.

Claims

1. An automatic dispensing device, comprising a spray water inlet channel for pumping detergent into a water box, characterized in that: The spray water inlet flow channel is provided with an air hole connected to the external atmosphere, and a control valve is provided at the air hole, so that when water flows through the spray water inlet flow channel, the control valve plug is affected by the water flow pressure and blocks the air hole accordingly; when there is no water flowing through the spray water inlet flow channel, the control valve plug automatically resets to open the air hole, so that the residual water in the spray water inlet flow channel automatically flows out under the action of gravity; The control valve includes a valve plug installed inside the air vent. The valve plug can be pushed outward along the axial direction of the air vent under the action of water pressure to block the air vent. A return spring is provided between the valve plug and the inner wall of the spray water inlet channel to apply an elastic force to the valve plug to drive it to open the air vent. The top of the water box is composed of a top cover plate, and a corresponding horizontally laid cover plate is provided on the lower side of the top cover plate. The top cover plate and the cover plate are welded together by a fusion process. A flow channel structure for water flow and a sealed arrangement is formed between the top cover plate and the cover plate. Part of the flow channel structure constitutes a spray water inlet flow channel. The water inlet end of the spray water inlet flow channel passes through the cover plate and is connected to the negative pressure suction structure, and the end is provided with a spray port that passes through the cover plate and is connected to the lower part of the water box; The sealing plate is provided with an air vent which connects the spray water inlet channel with the inside of the water box, and a vertically arranged control valve is installed on the air vent.

2. An automatic delivery device according to claim 1, characterized in that: The valve plug comprises a mounting portion extending axially along the air vent, a sealing ring sleeved on the mounting portion, and a horizontally extending stop rib for preventing the mounting portion from separating from the air vent at the first end thereof close to the air vent.

3. An automatic delivery device according to claim 2, characterized in that: The return spring is sleeved on the outer periphery of the mounting portion, one end of the return spring is in limiting contact with the flange of the second end of the mounting portion that is horizontally bent outward, and the other end is in limiting contact with the inner wall of the spray water inlet channel.

4. An automatic delivery device according to any one of claims 1 to 3, characterized in that: The spray water inlet channel is provided with a sleeve protruding outward, the protruding end of the sleeve is provided with a coaxially arranged air vent, the other end of the sleeve is connected with the spray water inlet channel, and the valve plug of the control valve is axially arranged and installed inside the sleeve.

5. The automatic delivery device according to claim 4, characterized in that: The second end of the mounting portion is fitted corresponding to the inner wall of the sleeve, the radial width of the stop rib provided at the first end of the mounting portion is greater than the diameter of the air vent, and the radial width of the sealing ring is greater than the diameter of the air vent.

6. An automatic delivery device according to any one of claims 1 to 3, characterized in that: A supporting rib extending vertically upward is arranged on the bottom wall of the spray water inlet flow channel, and the upper end of the supporting rib is in supporting contact with the valve plug.

7. An automatic delivery device according to claim 6, characterized in that: There is a certain gap between the supporting ribs and the two side walls of the spray water inlet channel to allow water to pass through.

8. An automatic delivery device according to claim 6, characterized in that: The support rib is in support contact with the center of gravity of the valve plug, and the upper end surface of the support rib is a smooth horizontal support surface.

9. An automatic delivery device according to any one of claims 1 to 3, characterized in that: The water inlet end of the spray water inlet flow channel is connected with the negative pressure suction structure, and the end of the spray water inlet flow channel is provided with a spray port for spraying water into the water box, and the air vent is arranged on the spray water inlet flow channel near the water inlet end.

10. A washing machine, characterized in that: An automatic delivery device as described in any one of claims 1 to 9 is installed.

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