Automatic putting device of washing machine and washing machine

Abstract

The utility model relates to the technical field of household appliances, and discloses an automatic putting device of a washing machine and the washing machine. The automatic putting device comprises a water injection box which is provided with a main water inlet, a mixed water injection port and a water outlet; a main water inlet cavity, a detergent cavity and a mixing cavity are formed in the water injection box; the main water inlet cavity injects water through the main water inlet and discharges water through the water outlet; the mixing cavity injects water through a mixing water injection port, and a roundabout flow channel is formed in the mixing cavity; the extraction mechanism is used for extracting the detergent in the detergent cavity to the mixing cavity, and a liquid outlet of the extraction mechanism is formed in the bent position of the circuitous flow channel; and the spraying structure is communicated with the downstream tail end of the circuitous flow channel and is used for spraying out the mixed detergent and water. According to the automatic putting device of the washing machine, high-concentration essence in the premixing cavity can be directly sprayed to clothes through the spraying structure, and the washing effect is improved; meanwhile, the liquid outlet of the extraction mechanism is arranged at the bending part of the circuitous flow channel of the mixing cavity, so that the detergent and the water flow can be fully mixed.

Description

Technical Field

[0001] The utility model relates to the technical field of household appliances, in particular to an automatic dispensing device for a washing machine and a washing machine. Background Art

[0002] The common method of adding additives to existing washing machines, especially pulsator washing machines, is generally to set a liquid storage box on the washing machine, and the user pre-adds the additives into the liquid storage box structure of the washing machine in advance, and uses the water inlet of the washing machine to flush the additives into the washing machine barrel.

[0003] The conventional dosing device of a pulsator washing machine generally directly connects the liquid storage box to the washing machine barrel through the water outlet, so that the additives flowing out of the liquid storage box directly flow into the barrel. Due to the lack of an integrated water channel, the additives are not pre-mixed and are directly dosed, which easily leads to the problem that the additives cannot be effectively utilized due to uneven distribution. Utility Model Content

[0004] Based on the technical problems of uneven detergent delivery and poor washing effect in the prior art pulsator washing machine, the utility model provides an automatic detergent delivery device for a washing machine. By arranging a spray structure, the high-concentration essence liquid in the premixing chamber can be sprayed directly onto the clothes to improve the washing effect. At the same time, the liquid outlet of the extraction mechanism is arranged at the bend of the circuitous flow channel to ensure that the detergent and the water flow are fully mixed.

[0005] The utility model provides an automatic dispensing device for a washing machine, comprising:

[0006] A water injection box is provided with a main water inlet, a mixing water injection port and a water outlet; the water injection box is provided with a main water inlet cavity, a detergent cavity and a mixing cavity;

[0007] The main water inlet cavity is filled with water through the main water inlet, and water is discharged through the water outlet;

[0008] The mixing chamber is filled with water through the mixing water injection port, forming a circuitous flow channel therein;

[0009] An extraction mechanism, used to extract the detergent in the detergent chamber into the mixing chamber, wherein the liquid outlet of the extraction mechanism is arranged at the bend of the circuitous flow channel;

[0010] The spray structure is communicated with the downstream end of the circuitous flow channel and is used for spraying the mixed detergent and water.

[0011] In some embodiments, the water filling box is provided with a softener water filling port, and a softener chamber and a softener reflux chamber are provided in the water filling box. The softener chamber is filled with water through the softener water filling port, and water flows back to the main water inlet chamber through the softener reflux chamber.

[0012] In some embodiments, the water injection box is composed of an upper box body, a middle box body, and a lower box body that are relatively buckled and sealed together;

[0013] Between the upper box body and the middle box body, a convex rib is used to separate and form the upper section of the detergent chamber, the softener chamber, the softener water injection chamber, and the upper section of the softener return chamber;

[0014] Between the middle box body and the lower box body, a convex rib is used to separate and form the main water inlet chamber, the lower section of the detergent chamber, the mixing chamber, and the lower section of the softener return chamber;

[0015] The upper section of the detergent chamber is connected to the lower section of the detergent chamber; the lower section of the detergent chamber is connected to the extraction mechanism;

[0016] The softener water injection chamber is communicated with the softener water injection port; the softener chamber is filled with water through the softener water injection chamber, and flows back to the main water inlet chamber through the upper section and the lower section of the softener return chamber.

[0017] In some embodiments, the water flow in the softener water injection chamber floods into the softener chamber from the top of the surrounding wall of the softener chamber. A vertical rib structure is provided at the water inlet of the softener chamber. A gap is formed between the bottom end of the vertical rib structure and the bottom surface of the softener chamber, and the water flow floods into the softener chamber and flushes the softener in the softener chamber from the bottom gap of the vertical rib structure.

[0018] In some embodiments, the bottom surface of the detergent chamber has a slope, and the liquid suction nozzle of the extraction mechanism is arranged at the lowest position of the detergent chamber; the liquid spraying nozzle of the extraction mechanism is at a certain height from the bottom surface of the mixing chamber.

[0019] In some embodiments, a water retaining rib is arranged on one side of the main water inlet. A gap is formed between the bottom end of the water retaining rib and the bottom surface of the main water inlet chamber, and the incoming water flows out through the bottom gap of the water retaining rib.

[0020] In some embodiments, a drain hole is provided on the bottom surface of the softener water injection chamber; a mixed water injection chamber is further provided between the upper box body and the middle box body. The mixed water injection chamber is communicated with the mixed water injection port, and a breathing valve is arranged in the mixed water injection chamber.

[0021] In some embodiments, an observation window is provided on the side of the water injection box for observing the liquid level of the detergent chamber.

[0022] The present utility model further includes a washing machine, which includes the above-mentioned automatic dosing device for the washing machine.

[0023] Compared with the prior art, the advantages and positive effects of the present utility model are:

[0024] The above-mentioned automatic laundry detergent dispenser can directly spray the high-concentration essence liquid in the premixing chamber onto the clothes through the spraying structure, improving the washing effect. At the same time, the liquid outlet of the extraction mechanism is arranged at the bending point of the detouring flow channel, ensuring that when the detergent is extracted and injected into the mixing chamber, it can be fully mixed with the water flowing through the detouring flow channel, not only meeting the requirements of improving the washing ability and washing uniformity, but also effectively avoiding the waste of detergent. Brief Description of the Drawings

[0025] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0026] Figure 1 Structural schematic diagram of the automatic laundry detergent dispenser of the present invention;

[0027] Figure 2 Exploded view of the automatic laundry detergent dispenser of the present invention;

[0028] Figure 3 Front view of the automatic laundry detergent dispenser of the present invention;

[0029] Figure 4 Top view of the automatic laundry detergent dispenser of the present invention;

[0030] Figure 5 Bottom view of the automatic laundry detergent dispenser of the present invention;

[0031] Figure 6 Top view of the middle part of the box body of the automatic laundry detergent dispenser of the present invention;

[0032] Figure 7 Schematic diagram of the flow path of the fabric softener flushing in the automatic laundry detergent dispenser of the present invention;

[0033] Figure 8 Bottom view of the middle part of the box body of the automatic laundry detergent dispenser of the present invention;

[0034] Figure 9 Schematic diagram of the water path of the automatic laundry detergent dispenser of the present invention;

[0035] Figure 10 Stereogram of the upper part of the box body of the automatic laundry detergent dispenser of the present invention in the upward viewing direction;

[0036] Figure 11 Stereogram of the lower part of the box body of the automatic laundry detergent dispenser of the present invention;

[0037] Description of the reference numerals:

[0038] Water injection box 100;

[0039] Upper part of the box body 110; Detergent injection port 111; Fabric softener injection port 112;

[0040] Middle part of the box body 120; Main water inlet 121; Mixed water injection port 122; Fabric softener water injection port 123; Vertical rib structure 124; Water retaining rib 125; Water baffle 126; Drain hole 127; Air vent valve 128;

[0041] Lower part of the box body 130; Water outlet 131;

[0042] Main water inlet chamber A; Detergent chamber B; Upper section B1 of the detergent chamber, Lower section B2 of the detergent chamber; Mixing chamber C; Mixed water injection chamber D; Fabric softener water injection chamber E; Fabric softener chamber F; Fabric softener return chamber G; Upper section G1 of the fabric softener return chamber; Lower section G2 of the fabric softener return chamber;

[0043] Extraction mechanism 200; Suction pump 210; Liquid suction nozzle 220; Liquid spraying nozzle 230;

[0044] Spraying structure 300;

[0045] Siphon structure 400;

[0046] Observation window 500;

[0047] Water inlet valve module 600. Detailed implementation manners

[0048] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0049] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0050] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances. In the description of the above embodiments, specific features, structures, materials, or characteristics can be combined in a suitable manner in any one or more embodiments or examples.

[0051] The terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise stated, the meaning of "a plurality" is two or more.

[0052] Refer to Figures 1-11 , which is an embodiment of the automatic dosing device of the washing machine of the present utility model.

[0053] The automatic dosing device of the washing machine includes a water injection box 100, a pumping mechanism 200, and a spraying structure 300.

[0054] The water injection box 100 is provided with a main water inlet 121, a mixed water injection port 122, and a water outlet 131.

[0055] The water injection box 100 is internally provided with a main water inlet chamber A, a detergent chamber, and a mixing chamber C.

[0056] The main water inlet chamber A is filled with water through the main water inlet 121 and discharges water into the washing tub of the washing machine through the water outlet 131.

[0057] The detergent chamber stores detergent.

[0058] The pumping mechanism 200 is arranged on the water injection box 100 and is used to pump the detergent in the detergent chamber into the mixing chamber C.

[0059] The mixing chamber C is filled with water through the mixed water injection port 122. After being mixed with the detergent pumped into the mixing chamber C by the pumping mechanism 200, a high-concentration essence is generated in the mixing chamber C, fully activating the activity of the detergent. The pre-mixed essence is sprayed from the spraying structure 300 into the washing tub and directly sprayed on the clothes, fully wetting the clothing fibers.

[0060] Among them, a tortuous flow channel is formed in the mixing chamber C. The tortuous flow channel is generally S-shaped.

[0061] The spraying structure 300 is communicated with the downstream end of the tortuous flow channel and is used to spray the mixed detergent and water.

[0062] As Figure 8 and Figure 9 shown, the liquid outlet of the extraction mechanism 200 is arranged at the bending part of the bypass flow channel, ensuring that when the detergent is extracted and injected into the mixing chamber C, it can be fully mixed with the water flow passing through the bypass flow channel. At the bending part, the direction and speed of the water flow change, generating a turbulence effect. This dynamic water flow state helps the detergent to be more evenly dispersed in the water, ensuring that the detergent is fully rinsed and mixed to form a high-concentration essence. The spraying structure 300 can pressurize and directly spray the essence on the laundry. The high-concentration essence can penetrate into the fabric fibers, effectively break down stubborn stains, and improve the washing effect.

[0063] For the above-mentioned automatic washing machine dosing device, the high-concentration essence in the premixing chamber can be directly sprayed onto the laundry through the spraying structure 300, improving the washing effect; at the same time, the liquid outlet of the extraction mechanism 200 is arranged at the bending part of the bypass flow channel, ensuring that when the detergent is extracted and injected into the mixing chamber C, it can be fully mixed with the water flow passing through the bypass flow channel, not only meeting the requirements of improving the washing ability and washing uniformity, but also effectively avoiding the waste of detergent.

[0064] The automatic washing machine dosing device of this embodiment will be described in detail below with reference to the accompanying drawings.

[0065] See Figure 2 , the water injection box 100 is composed of a box body upper part 110, a box body middle part 120, and a box body lower part 130 that are relatively buckled and sealed together.

[0066] As Figure 4 , the box body upper part 110 is provided with a detergent dosing port 111 and a fabric softener dosing port 112, which are respectively used for dosing detergent and fabric softener.

[0067] As Figure 8 and Figure 6 , one side of the box body middle part 120 is provided with a main water inlet 121, a mixed water injection port 122, and a fabric softener water injection port 123. The main water inlet 121, the mixed water injection port 122, and the fabric softener water injection port 123 are respectively connected to the water inlet pipe through the water inlet valve module 600.

[0068] As Figure 5 , the box body lower part 130 is provided with a water outlet 131.

[0069] A fabric softener chamber F and a fabric softener return chamber are arranged in the water injection box 100. The fabric softener chamber F is filled with water through the fabric softener water injection port 123 and returns to the main water inlet chamber A through the fabric softener return chamber.

[0070] The upper part 110 of the box body is hermetically connected to the middle part 120 of the box body. A sealed gap space is formed between the opposite surfaces of the upper part 110 and the middle part 120 of the box body. Oppositely protruding ribs are provided on the opposite surfaces of the upper part 110 and the middle part 120 of the box body. As Figure 6 shown, the ribs divide the gap space between the upper part 110 and the middle part 120 of the box body into the upper section B1 of the detergent chamber, the mixing water injection chamber D, the fabric softener injection chamber E, and the upper section G1 of the fabric softener return chamber.

[0071] The middle part 120 of the box body is hermetically connected to the lower part 130 of the box body. A sealed gap space is formed between the opposite surfaces of the middle part 120 and the lower part 130 of the box body. Oppositely protruding ribs are provided on the opposite surfaces of the middle part 120 and the lower part 130 of the box body. As Figure 8 shown, the ribs divide the gap space between the middle part 120 and the lower part 130 of the box body into the main water inlet chamber A, the lower section B2 of the detergent chamber, the mixing chamber C, and the lower section G2 of the fabric softener return chamber.

[0072] Among them, the upper section B1 of the detergent chamber is connected to the lower section B2 of the detergent chamber to form the detergent chamber. The upper section B1 of the detergent chamber is located below the detergent dispensing port 111 and is connected to the detergent dispensing port 111. The dispensed detergent flows to the lower section B2 of the detergent chamber under the action of gravity for storage. The extraction mechanism 200 is connected to the lower section B2 of the detergent chamber and is used to extract the detergent stored in the lower section of the detergent chamber into the mixing chamber C.

[0073] The mixing water injection chamber D is connected to the mixing water injection port 122. The water flowing in through the mixing water injection port 122 first enters the mixing water injection chamber D and then enters the mixing chamber C through the mixing water injection chamber D to be mixed with the detergent to generate a high-concentration essence.

[0074] The fabric softener injection chamber E is connected to the fabric softener injection port 123; the upper section G1 of the fabric softener return chamber is connected to the lower section G2 of the fabric softener return chamber to form the fabric softener return chamber. The fabric softener chamber F is filled with water through the fabric softener injection chamber E and returns to the main water inlet chamber A through the upper section G1 and the lower section G2 of the fabric softener return chamber, and finally can flow out from the water outlet 131.

[0075] In this embodiment, as Figure 7 shown, the water flow in the fabric softener injection chamber E floods into the fabric softener chamber F from the top of the surrounding wall of the fabric softener chamber F. A vertical rib structure 124 is provided at the water inlet of the fabric softener chamber F. Refer to Figure 10 , a gap is formed between the bottom end of the vertical rib structure 124 and the bottom surface of the fabric softener chamber F. After the water floods in, it flushes the fabric softener in the fabric softener chamber F from the bottom gap of the vertical rib structure 124 to ensure the flushing effect.

[0076] As shown by the arrow in Figure 7, both the fabric softener filling chamber E and the upper section G1 of the fabric softener return chamber are located on one side of the fabric softener chamber F. The water flow after rinsing can overflow from the top of the surrounding wall of the fabric softener chamber F and flow out from the fabric softener return chamber.

[0077] See Figure 10 , the rib structure 124 is arranged on the inner side surface of the upper part 110 of the box body. The rib structure 124 is an L-shaped structure and encloses the side wall at the corner of the fabric softener chamber F. The height of one side wall of the rib structure 124 is less than that of the other side wall, so as to form a gap between it and the bottom surface of the fabric softener chamber F.

[0078] A siphon structure 400 is also arranged in the fabric softener chamber F. The lower section G2 of the fabric softener return chamber is divided into two paths. One path is directly connected to the upper section G1 of the fabric softener return chamber, and the other path is connected to the siphon structure 400. The water flow siphoned from the siphon structure 400 and the water flow overflowing from the fabric softener chamber F enter the fabric softener return chamber together, then enter the main water inlet chamber A and finally flow out from the water outlet 131.

[0079] In this embodiment, as Figure 8 shown, the extraction mechanism 200 includes a suction pump 210, a liquid suction nozzle 220 and a liquid spray nozzle 230 connected to the liquid suction port and the liquid outlet of the suction pump 210.

[0080] In order to ensure the liquid flow direction and prevent the liquid in the mixing chamber C from flowing back to the detergent chamber, the suction pump 210 is set as a one-way suction pump 210 that can only conduct unidirectionally from the inlet to the outlet; or the liquid suction nozzle 220 or / and the liquid spray nozzle 230 are set as one-way valves to ensure the unidirectional flow of the liquid in the whole water path and prevent the occurrence of backflow.

[0081] At the same time, the liquid spray nozzle 230 is set at a certain height from the bottom surface of the mixing chamber C to ensure that the water in the mixing chamber C is not easy to enter the liquid spray nozzle 230.

[0082] In order to ensure that the suction pump 210 can suck all the detergent in the detergent chamber, the bottom surface of the detergent chamber is provided with a slope, and the liquid suction nozzle 220 of the extraction mechanism 200 is arranged at the lowest part of the detergent chamber.

[0083] In other embodiments, the extraction mechanism 200 can also be other driving devices that can provide liquid driving force, such as a Venturi tube that generates negative pressure suction by flowing through water flow, etc.

[0084] In this embodiment, as Figure 8 and Figure 9As shown, a water retaining rib 125 is provided on one side of the main water inlet 121. The bottom end of the water retaining rib 125 forms a gap with the bottom surface of the main water inlet chamber A, and the incoming water flows out through the gap at the bottom of the water retaining rib 125. In this embodiment, the fabric softener return chamber and the main water inlet chamber A are separated by a baffle 126. The water retaining rib 125 is arranged between the main water inlet 121 and the baffle 126. By adding the water retaining rib 125 on the side of the main water inlet 121, it is ensured that the water flows out from the gap between the lower side of the water retaining rib 125 and the baffle 126, and the abnormal sound in the annular chamber caused by the direct spraying of water can be solved.

[0085] In this embodiment, referring to Figure 6 , a drain hole 127 is provided on the bottom surface of the fabric softener injection chamber E to ensure that after the water inlet process stops, the residual water in the chamber can be quickly discharged, effectively avoiding the problems of bacterial growth and cavity corrosion caused by water accumulation.

[0086] Furthermore, a breather valve 128 is also provided in the mixing injection chamber D. The lower end outlet of the breather valve 128 is communicated with the main water inlet chamber A. When the mixing injection chamber D is being filled with water, the breather valve 128 is closed. When the water inlet stops, the breather valve 128 is opened to discharge the residual water in the mixing injection chamber D.

[0087] In this embodiment, an observation window 500 is provided on the side of the water injection box 100. The observation window 500 is made of transparent or translucent material, enabling the user to directly and conveniently observe the liquid level in the detergent chamber without opening the water injection box 100. The observation window has a simple structure, low cost, simplifies the user's operation, improves the usability, and also allows the user to supplement the detergent in a timely manner when necessary, avoiding the situation where the washing effect is affected due to insufficient detergent.

[0088] In this embodiment, the spraying structure 300 is a spray nozzle, and the spray nozzle can be shaped to ensure the maximum spraying coverage area, so that the essence can act on the clothes to be washed more evenly and comprehensively, significantly improving the washing effect.

[0089] The present utility model further includes a washing machine, which includes the above-mentioned automatic detergent dispensing device of the washing machine. The washing machine can be a pulsator washing machine or a drum washing machine.

[0090] The above embodiments are only used to illustrate the technical solutions of the present utility model, rather than to limit it; although the present utility model has been described in detail with reference to the foregoing embodiments, for those of ordinary skill in the art, it is still possible to modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions required to be protected by the present utility model.

Claims

1. A washing machine automatic dispensing device, characterized in that: include: A water injection box is provided with a main water inlet, a mixed water injection port and a water outlet; The water injection box is provided with a main water inlet chamber, a detergent chamber, and a mixing chamber; The main water inlet cavity is filled with water through the main water inlet, and water is discharged through the water outlet; The mixing chamber is filled with water through the mixing water injection port, forming a circuitous flow channel therein; An extraction mechanism, used to extract the detergent in the detergent chamber into the mixing chamber, wherein the liquid outlet of the extraction mechanism is arranged at the bend of the circuitous flow channel; The spray structure is communicated with the downstream end of the circuitous flow channel and is used for spraying the mixed detergent and water.

2. The automatic dispensing device for washing machines according to claim 1, characterized in that: The water injection box is provided with a softener water injection port, and a softener cavity and a softener reflux cavity are arranged in the water injection box. The softener cavity is injected with water through the softener water injection port, and the water flows back to the main water inlet cavity through the softener reflux cavity.

3. The automatic dispensing device for washing machines according to claim 2, characterized in that: The water injection box is composed of an upper box body, a middle box body, and a lower box body that are relatively buckled and sealed together; The upper part of the box body and the middle part of the box body are separated by convex ribs to form the upper section of the detergent chamber, the softener chamber, the softener water injection chamber, and the upper section of the softener reflux chamber; The middle part of the box body and the lower part of the box body are separated by convex ribs to form a main water inlet chamber, a lower section of the detergent chamber, a mixing chamber and a lower section of the softener reflux chamber; The upper section of the detergent chamber is connected to the lower section of the detergent chamber; the lower section of the detergent chamber is connected to the extraction mechanism; The softener water injection chamber is connected with the softener water injection port; the softener chamber is filled with water through the softener water injection chamber, and flows back to the main water inlet chamber through the upper section of the softener reflux chamber and the lower section of the softener reflux chamber.

4. The automatic dispensing device for washing machines according to claim 3, characterized in that: The water flow in the softener water injection cavity overflows into the softener cavity from the top of the surrounding wall of the softener cavity. A vertical rib structure is arranged at the water inlet of the softener cavity. A gap is formed between the bottom end of the vertical rib structure and the bottom surface of the softener cavity. After the water flow overflows, the softener in the softener cavity is flushed from the gap at the bottom of the vertical rib structure.

5. The automatic dispensing device for washing machines according to claim 4, characterized in that: The bottom surface of the detergent chamber has a slope, and the liquid suction nozzle of the extraction mechanism is arranged at the lowest point of the detergent chamber; the liquid spray nozzle of the extraction mechanism is at a certain height from the bottom surface of the mixing chamber.

6. The automatic dispensing device for washing machines according to claim 1, characterized in that: A water retaining rib is arranged on one side of the main water inlet, and a gap is formed between the bottom end of the water retaining rib and the bottom surface of the main water inlet cavity, and the inlet water flows out through the gap at the bottom of the water retaining rib.

7. The automatic dispensing device for washing machines according to claim 3, characterized in that: The bottom surface of the softener water injection cavity is provided with a water drain hole.

8. The automatic dispensing device for washing machines according to claim 3, characterized in that: A mixing water injection chamber is also provided between the upper part of the box body and the middle part of the box body. The mixing water injection chamber is communicated with the mixing water injection port. A ventilation valve is provided in the mixing water injection chamber.

9. The automatic dispensing device for washing machines according to claim 1, characterized in that: An observation window is provided on the side of the water filling box for observing the liquid level of the detergent chamber.

10. A washing machine, characterized in that: It comprises the automatic dispensing device for a washing machine as described in any one of claims 1 to 9.

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