Negative Pressure Suction Structure, Dispensing Device and Washing Machine

Abstract

A dispensing device includes: a dispensing box, having a washing powder chamber for dispensing washing powder; a water tank and a water supply pipeline. Water flowing into the water tank by the dispensing device is used to flush washing powder in the washing powder chamber into the water tank to form a washing powder solution; a negative pressure suction structure is disposed in the water supply pipeline, so that a negative pressure is generated by the water flow flowing through the water supply pipeline; and the negative pressure suction structure is connected with the water tank, so that the washing powder solution in the water tank is sucked into the water supply pipeline by the negative pressure.

Description

FIELD

[0001] The present application belongs to the technical field of a laundry treatment apparatus, specifically relates to an automatic dispensing device for a washing machine, more particularly to a dispensing device having a function of automatically dispensing washing powder, and particularly relates to a negative pressure suction structure applied to an automatic dispensing device; and also relates to a washing machine equipped with the above automatic dispensing device.BACKGROUND

[0002] Existing washing machine generally includes a water holding tub for holding water, and a rotatable washing drum arranged in the water holding tub. Dehydration holes are formed on the washing drum to communicate the inside with the outside, so that the washing water flowing into the water holding tub can flow forth and back between the inside and the outside of the washing drum through the dehydration holes, and the washing water is in contact with the load to be treated in the washing drum and used to treat the load.

[0003] A method for dispensing additive for the above existing washing machine is as follows: dispensing additive into a pipeline connected to the water holding tub of the washing machine through an additive dispensing device, and then allowing the additive to flow into the water holding tub of the washing machine along the pipeline. Therefore, in the above method, the additive is dispensed into a space between the water holding tub and the washing drum of the washing machine, and cannot directly contact the load placed in the washing drum.

[0004] Then, during a washing program of the washing machine, the dispensed additive is mixed with the washing water flowing into the water holding tub, and part of the washing water mixed with the additive flows into the washing drum through the dehydration holes and is in contact with the load to be treated in the washing drum, so that a small part of the additive mixed into the washing water can be in contact with the load to have an effect on the load. Therefore, there are the problems of low utilization efficiency of the dispensed additive and waste of additive in the traditional method for dispensing additive.

[0005] In the traditional method for dispensing additive, in order that the additive dispensed between the water holding tub and the washing drum can be in contact with the load to be treated in the washing drum, a large amount of water needs to be flowed into the water holding tub, and the water level of the washing water in the water holding tub is higher than that of the washing drum to allow the washing water to flow into the washing drum through the dehydration holes and the additive to be contact with the load in the washing drum. Therefore, there is also the problem of excessive water consumption for dispensing additive in the traditional method for dispensing additive.

[0006] In addition, the existing additive dispensing device generally only has a function of automatically dispensing liquid detergent, and no function of dispensing solid additive such as washing powder, so that the existing washing machine cannot use additives such as solid washing powder to perform washing on laundry.

[0007] In view of this, the present application is specifically proposed.SUMMARY

[0008] An objective of the present application is to overcome the shortcomings of the prior art, and provide an automatic dispensing device to achieve the purpose of dispensing additives such as washing powder directly to the outside through the water supply pipeline. Another objective of the present application is to provide an automatic dispensing device to achieve the purpose of suctioning and dispensing the additive mixture by using negative pressure.

[0009] In order to achieve the above objectives of the application, the technical solutions of the present application is as follows.

[0010] The present application provides a dispensing device, comprising: a dispensing box having a washing powder chamber for dispensing washing powder, a water tank, and a water supply pipeline. Water flowing into the water tank of the automatic dispensing device is used to flush the washing powder placed in the washing powder chamber into the water tank to form a washing powder solution. A negative pressure suction structure is disposed in the water supply pipeline, and a negative pressure is generated by the water flow flowing through the water supply pipeline. The negative pressure suction structure is connected with the water tank, and the washing powder solution in the water tank is sucked into the water supply pipeline by the negative pressure.

[0011] As an embodiment, the negative pressure suction structure is a Venturi tube disposed in the water supply pipeline. The Venturi tube has a constricted section and a flared section, which are arranged in sequence. A negative pressure port is formed at a connection between the constricted section and the flared section for communicating the inside with the outside of the pipeline. The negative pressure port is connected with a washing powder solution outlet provided at a bottom of the water tank through a liquid sucking pipeline.

[0012] As an embodiment, a top of the water tank is provided with a water inlet structure, and the water inlet structure is connected with a water supply pipeline of the water tank. The water inlet structure has an outlet facing the washing powder chamber of the dispensing box, so that the water flow is used to flush the washing powder in the washing powder chamber into the water tank. Preferably, the outlet of the water inlet structure is opened downward and located above an opening of a top of the washing powder chamber.

[0013] As an embodiment, a bottom of the water tank is provided with a partition rib for dividing a lower portion of the water tank into a first drain trough and a second drain trough. Bottoms of the first drain trough and the second drain trough are provided with a washing powder solution outlet and a main outlet. The washing powder solution outlet is connected with the negative pressure port of the negative pressure suction structure through the liquid sucking pipeline, and the main outlet is connected with a dispensing pipeline of the dispensing device.

[0014] As an embodiment, the first drain trough and the second drain trough are arranged sequentially in a front-rear direction. The first drain trough is connected with an outlet of the washing powder chamber, for allowing the washing powder to flow in together with water flow. Preferably, the bottom of the first drain trough is an inclined surface converging towards the washing powder solution outlet, for guiding the washing powder solution in the first drain trough to flow towards the washing powder solution outlet.

[0015] As an embodiment, the dispensing box has at least one dispensing chamber for holding detergent, so that the detergent in the dispensing chamber is dispensed into the second drain trough of the water tank by using the water inlet structure arranged on the top of the water tank. Preferably, the bottom of the second drain trough is an inclined surface converging toward the detergent outlet, for guiding liquid in the second drain trough to flow to the main outlet.

[0016] As an embodiment, the water tank is provided with a drawer part capable of being pulled out from a front side. The drawer part is as the dispensing box. The dispensing box is provided with at least one washing powder chamber for holding washing powder and at least one dispensing chamber for holding detergent. Preferably, the front side of the water tank has an opening for the drawer part to be pulled out, and the front side of the water tank is constituted by a front baffle vertically extending and located below the opening. A top end of the front baffle is higher than a top end of the partition rib.

[0017] As an embodiment, an outlet of the water supply pipeline and an outlet of the dispensing pipeline respectively constitute the dispensing port for washing powder and the dispensing port for detergent. Or, the outlet of the water supply pipeline is connected with the dispensing pipeline, and the outlet of the dispensing pipeline constitutes the dispensing port of the automatic dispensing device for dispensing the washing powder solution and the detergent solution.

[0018] As an embodiment, the dispensing device also includes a water supply pipeline of the water tank. An upper cover is arranged on a top of the water tank, the water inlet structure is arranged on the upper cover, and the water supply pipeline of the water tank is connected with the water inlet structure. A water outlet of the water inlet structure is opened toward the washing powder chamber below, for allowing water to flow into the water tank through the washing powder chamber.

[0019] Another objective of the application is to provide a washing machine equipped with the above automatic dispensing device, so as to directly dispense additives into the washing drum. Thereby the mixture solution of the additives such as the washing powder is in direct contact with the load to be treated in the washing drum, to improve the utilization rate of the additives such as the washing powder.

[0020] In order to achieve the above objective of the application, the basic concept of the technical solution of the present application is as the follows.

[0021] The present application also provides a washing machine, including a washing drum for holding a load to be treated, and any one of the above automatic dispensing devices. Inlets of water supply pipelines of the automatic dispensing device are connected with a water inlet pipe of the washing machine, and a dispensing port of the automatic dispensing device is connected with the inside of the washing drum.

[0022] After adopting the above technical solution, the present application has the following advantages compared with the prior art.

[0023] 1. By arranging the water supply pipeline with the negative pressure suction structure, the washing powder solution to be dispensed is sucked by using the water flowing through the water supply pipeline separately arranged, to realize the effect of automatically sucking and dispensing the washing powder solution. The washing powder solution is directly sucked into the water supply pipeline, so the washing powder solution is directly mixed in the water supply pipeline and dispensed into the washing drum of the washing machine. Thereby the washing powder solution with a high concentration is used to directly wash laundry in the washing drum

[0024] 2. In the present application, by arranging the above additive dispensing device in the washing machine, the mixture solution of the additive directly flows to the nozzle through the water supply pipeline of the washing machine, and is directly sprayed into the washing drum by the nozzle. The additives can directly flow into the washing drum of the washing machine through the water pipeline of the dispensing device without passing through the water holding tub outside the washing drum, and the additives are sprayed onto the load to be treated, thereby directly spraying the mixture of additives onto the load to be treated in the washing drum for washing.

[0025] 3. Through the above arrangement of the above dispensing device arranged in the washing machine, the mixture of additives is formed by mixing the additives with a small amount of water in the water supply pipeline, and the mixture of additives is directly sprayed onto the load to be treated in the washing drum, so that the utilization rate of the dispensed additives is significantly improved.

[0026] The technical problems to be solved by the present application are the shortcomings of prior art, and an automatic dispensing device is provided for realizing the purpose that additives such as washing powder can be directly dispensed outward through the water supply pipeline. Another objective of the present application is to provide a dispensing device, so as to realize the purpose of dissolving, mixing, suctioning and dispensing additives by using the water flowing through different pipelines respectively.

[0027] The present application provides a dispensing device, including: at least two water supply pipelines which are a water supply pipeline of a water tank and a dispensing water supply pipeline; and the water tank in which a dispensing box is arranged. The dispensing box has a dispensing chamber for holding additive. The water supply pipeline of the water tank is connected with a water inlet structure of the water tank, so that water flowing in is used to flush the additive in the dispensing chamber into the water tank, and the additive is mixed in the water tank to form a mixture solution of the additive. The dispensing water supply pipeline is connected with an outlet of the water tank, so that the mixture solution of the additive in the water tank is sucked out by the water flow and dispensed outward together with the water flow.

[0028] As an embodiment, the dispensing device is provided with a water inlet valve having one inlet and two outlets. The one inlet is controlled to be in communication with one of the two outlets, or be in simultaneous communication with the two outlets, or be in simultaneous disconnection from the two outlets. The two outlets are respectively connected to inlets of the water supply pipeline of the water tank and the dispensing water supply pipeline.

[0029] As an embodiment, the water tank is provided with the dispensing box being capable of being pulled out. The dispensing box is provided with a washing powder chamber, a bottom of the washing powder chamber is provided with an outlet, and a top opening of the washing powder chamber constitutes an inlet. At least water outlet section of the water supply pipeline of the water tank is integrated on an upper cover on the top of the water tank. An outlet of the water supply pipeline of the water tank is opened towards the top opening of the washing powder chamber, so that water from the outlet directly flows into the washing powder chamber.

[0030] As an embodiment, the dispensing water supply pipeline is arranged outside of the water tank. A negative pressure suction structure is arranged in a middle of the dispensing water supply pipeline, and a negative pressure port of the negative pressure suction structure is connected with a washing powder solution outlet formed on a bottom of the water tank through a liquid sucking pipeline, for sucking the washing powder solution into the dispensing water supply pipeline.

[0031] As an embodiment, the dispensing water supply pipeline is also provided with a pressure boosting structure for pressurizing the water flow to form a pressurized water flow in the dispensing water supply pipeline. The pressure boosting structure is arranged upstream of the negative pressure suction structure, for using the pressurized water flow to perform high-speed impact on the washing powder solution for mixing.

[0032] Preferably, the pressure boosting structure is a pressure boosting nozzle formed by a conical pipe, of which a radial dimension is gradually narrowed along a water flow direction.

[0033] As an embodiment, the negative pressure suction structure is a Venturi tube. The Venturi tube is provided with a pipe section, of which a diameter is changed to cause a change of the flow rate of the water flowing through. The pipe section includes a negative pressure suction area where the negative pressure is generated by using the water flowing through. The negative pressure suction area is provided with a negative pressure port for communicating the inside with outside. The negative pressure port is connected with the washing powder solution outlet of the water tank through the liquid sucking pipeline.

[0034] As an embodiment, the negative pressure suction structure includes a liquid suction chamber and a Venturi tube connected in series in the dispensing water supply pipeline, a boosting nozzle is arranged in the liquid suction chamber, and the boosting nozzle is connected with an inlet of the liquid suction chamber, so that the boosting nozzle is used to accelerate a flow rate of water flowing into the Venturi tube.

[0035] As an embodiment, the boosting nozzle, the liquid suction chamber, and the Venturi tube are all arranged coaxially. There is a gap between the boosting nozzle and an inner wall of the liquid suction chamber, a negative pressure port is opened on a wall of the liquid suction chamber, and the negative pressure port is connected with the Venturi tube through the gap, so that the negative pressure generated by the Venturi tube is applied to the liquid suction chamber, to form a negative pressure suction area in the liquid suction chamber that can generate negative pressure.

[0036] As an embodiment, the outlet of the dispensing water supply pipeline constitutes the dispensing port of the dispensing device.

[0037] Another objective of the application is to provide a washing machine equipped with the above automatic dispensing device, so as to achieve the purpose of directly dispensing additives into the washing drum. Thereby the mixed solution of the additive such as the washing powder is directly in contact with the load to be treated in the washing drum, to improve the utilization rate of the additive such as the washing powder.

[0038] In order to achieve the above objective of the application, the basic concept of the technical solution adopted by the present application is as follows.

[0039] The present application also discloses a washing machine, including a washing drum for holding the load to be treated, and any one of the above dispensing devices. Inlets of water supply pipelines of the dispensing device are connected with a water inlet pipe of the washing machine, and a dispensing port of the dispensing device is connected with the inside of the washing drum.

[0040] After adopting the above technical solutions, the present application have the following advantages compared with the prior art.

[0041] 1. Through the above arrangement, after water is supplied into two different water supply pipelines, the washing powder added in advance can be mixed to form the washing powder solution, and the washing powder solution can be sucked to be dispensed, thereby the washing powder added by user is automatically dispensed. At the same time, since the two water supply pipelines can be used synchronously, a process of mixing the washing powder and a process of sucking the washing powder solution can be executed synchronously, which greatly shortens the dispensing time of the washing powder by the dispensing device.

[0042] 2. In the present application, by arranging the above additive dispensing device in the washing machine, the mixture solution of the additive directly flows to the nozzle through the water supply pipeline of the washing machine, and is directly sprayed into the washing drum by the nozzle. The additives can directly flow into the washing drum of the washing machine through the water pipeline of the dispensing device without passing through the water holding tub outside the washing drum, and the additives are sprayed onto the load to be treated, thereby directly spraying the mixture of additives onto the load to be treated in the washing drum for washing.

[0043] 3. Through the above arrangement of the above dispensing device arranged in the washing machine, the mixture of additives is formed by mixing the additives with a small amount of water in the water supply pipeline, and the mixture of additives is directly sprayed onto the load to be treated in the washing drum, so that the utilization rate of the dispensed additives is significantly improved.

[0044] The technical problems to be solved by the present application are the shortcomings of the prior art. It is also provided with a negative pressure suction structure to achieve the purpose of efficiently suctioning the mixture solution of additives such as washing powder. Another objective of the application is to provide a negative pressure suction structure to pressurize water flow which is used to generate the negative pressure, thereby improving the negative pressure suction effect and the dispensing rate of the additive solution.

[0045] In order to achieve the above objective of the application, the basic concept of the technical solution adopted by the present application is as follows.

[0046] The present application provides a negative pressure suction structure, including: a liquid inlet pipe section for allowing fluid to flow in, and a liquid outlet pipe section for allowing fluid to flow out. An outlet portion of the liquid inlet pipe section is inserted into an inlet portion of the liquid outlet pipe section, and the liquid inlet pipe section and the liquid outlet pipe section are in communication with each other to form a flow path for water flow to pass through. A gap between an outer wall of the outlet portion of the liquid inlet pipe section and an inner wall of the inlet portion of the liquid outlet pipe section constitutes a negative pressure suction area where a negative pressure is generated by the water flow flowing through the flow path, and the outer wall of the liquid outlet pipe section is provided with a negative pressure port for communicating the negative pressure suction area with the outside.

[0047] As an embodiment, the outlet portion of the liquid inlet pipe section is a constricted pipe, of which a diameter is gradually narrowed along a water flow direction. The inlet portion of the liquid outlet pipe section is a straight pipe coaxially sleeved on an outer wall of the constricted pipe, and an inner diameter of the straight pipe is greater than a maximum outer diameter of the constricted pipe. Venturi tube is arranged downstream of the straight pipe, and the Venturi tube is coaxially arranged downstream of the constricted pipe of the liquid inlet pipe section. A minimum outer diameter of the constricted pipe is smaller than a maximum inner diameter of the Venturi tube.

[0048] As an embodiment, the Venturi tube includes a constricted section, a straight pipe section, and a flared section, which are sequentially arranged along the water flow direction. A minimum inner diameter of the constricted section is greater than a minimum inner diameter of the constricted pipe, and is less than a maximum inner diameter of the constricted pipe.

[0049] As an embodiment, an upstream end of the straight pipe at the inlet portion of the liquid outlet pipe section is sealed with the outlet portion of the liquid inlet pipe section, a downstream end is connected to an inlet end of the Venturi tube, and a wall in a middle of the liquid outlet pipe section is provided with the negative pressure port for communicating the inside with the outside of the pipe.

[0050] As an embodiment, an outer wall of the liquid outlet portion of the liquid inlet pipe section is provided with an annular assembly being radially protruded, and an outer wall of the upstream end of the straight pipe is provided with an assembly groove being radially outwardly protruded, and the annular assembly is correspondingly inserted in the assembly groove for assembly. Preferably, at least one sealing ring is provided at a junction of the annular assembly and the assembly groove for sealing the junction between the liquid inlet pipe section and the liquid outlet pipe section.

[0051] As an embodiment, the annular assembly is arranged at a large-diameter end of the constricted pipe of the liquid inlet pipe section. An axial length of the constricted pipe is greater than or equal to an axial length of the straight pipe, and less than a sum of the axial lengths of the straight pipe and the flared section.

[0052] As an embodiment, the inner diameter of the straight pipe is greater than the maximum inner diameter of the Venturi tube, and the downstream end of the straight pipe is connected with the large-diameter end of the constricted section through a transition portion.

[0053] As an embodiment, a diameter of the negative pressure port is smaller than the maximum inner diameter of the Venturi tube, and greater than the minimum inner diameter of the constricted pipe.

[0054] Another objective of the application is to provide an automatic dispensing device to achieve the purpose that additives such as washing powder can be dispensed outward directly through the water supply pipeline.

[0055] In order to achieve the above objective of the application, the basic concept of the technical solution adopted by the present application is as follows. A dispensing device, includes: a water tank for mixing the additives added by user with the water to form a mixture solution; and a water supply pipeline. The above negative pressure suction structure is disposed in the water supply pipeline, an inlet of a liquid inlet pipe section of the negative pressure suction structure is connected with the upstream of the water supply pipeline, an outlet of a liquid outlet pipe section is connected with the downstream of the water supply pipeline, and a negative pressure port is connected with an outlet of the water tank through a liquid sucking pipeline. So the negative pressure generated by the water flow is used to suction the mixture solution in the water tank into the water supply pipeline for dispensing.

[0056] Another objective of the application is to provide a washing machine equipped with the above automatic dispensing device, so as to achieve the purpose of directly dispensing additives into the washing drum. Thereby the mixture solution of the additives such as the washing powder is in direct contact with the load to be treated in the washing drum, to improve the utilization rate of the additives such as the washing powder.

[0057] In order to achieve the above objective of the application, the basic concept of the technical solution of the present application is as the follows.

[0058] A washing machine in the present application includes a washing drum and the above dispensing device. The outlet of the water supply pipeline is connected with the washing drum for dispensing the mixture solution into the washing drum.

[0059] After adopting the above technical solutions, the present application have the following advantages compared with the prior art.

[0060] 1. Through the above settings, the pressure boosting structure is integrated in the negative pressure suction structure. The water flow is first boosted and accelerated and flows into the negative pressure suction structure, so it is greatly increased in the water pressure flowing through the negative pressure suction structure, and increased in the negative pressure at the negative pressure suction area. Therefore the suction rate of the mixture solution of the additive is significantly improved. In addition, through the above settings, the negative pressure can be generated in the negative pressure suction area in the process of spraying water through the pressure boosting structure formed by the constricted pipe, and it is further improved in the negative pressure suction effect.

[0061] 2. In the present application, by arranging the above additive dispensing device in the washing machine, the mixture solution of the additive directly flows to the nozzle through the water supply pipeline of the washing machine, and is directly sprayed into the washing drum by the nozzle. The additives can directly flow into the washing drum of the washing machine through the water pipeline of the dispensing device without passing through the water holding tub outside the washing drum, and the additives are sprayed onto the load to be treated, thereby directly spraying the mixture of additives onto the load to be treated in the washing drum for washing.

[0062] 3. Through the above arrangement of the above dispensing device arranged in the washing machine, the mixture of additives is formed by mixing the additives with a small amount of water in the water supply pipeline, and the mixture of additives is directly sprayed onto the load to be treated in the washing drum, so that the utilization rate of the dispensed additives is significantly improved.

[0063] The present application has a simple structure, significant effect, and is suitable for promotion and use.

[0064] The specific Embodiments of the present application are described in further detail below with reference to the accompanying drawings.DESCRIPTION OF DRAWINGS

[0065] The accompanying drawings are part of the present disclosure and are used to provide a further understanding of the present application. The exemplary embodiments of the present application and their descriptions are used to explain the present application, but do not constitute an improper limitation of the present application. The drawings described below are only some embodiments. For those skilled in art, other drawings can be obtained based on these drawings without creative work. In the drawings:

[0066] FIG. 1 is a schematic diagram of a dispensing device according to an Embodiment of the present application;

[0067] FIGS. 2 to 3 are schematic diagrams of a dispensing device from different perspectives according to an Embodiment of the present application;

[0068] FIG. 4 is an exploded diagram of a dispensing device according to an Embodiment of the present application;

[0069] FIG. 5 is a cross-sectional diagram of a dispensing device according to an Embodiment of the present application;

[0070] FIG. 6 is an enlarged diagram of place A in FIG. 5 according to an Embodiment of the present application;

[0071] FIG. 7 is a schematic diagram of a water tank according to an Embodiment of the present application;

[0072] FIG. 8 is a schematic diagram of a dispensing device according to another Embodiment of the present application;

[0073] FIG. 9 is a flowchart of a control method for a dispensing device according to an Embodiment of the present application.

[0074] Description of main components in the drawings:

[0075] 100, dispensing device; 200, water holding tub; 300, washing drum; 1, water supply pipeline; 2, water tank; 3, upper cover; 31, first part; 32, second part; 4, negative pressure suction structure; 5, dispensing box; 6, water inlet valve; 7, pressure boosting structure; 8, water inlet structure; 9, dispensing pipeline; 11, water supply pipeline of water tank; 12, dispensing water supply pipeline; 13, liquid sucking pipeline; 21, first drain trough; 22, second drain trough; 23, partition rib; 24, front baffle; 231, first partition part; 232, second partition part; 233, notch; 211, washing powder solution outlet; 212, recess; 221, main outlet; 40, Venturi tube; 41, negative pressure port; 42, liquid inlet pipe section; 43, liquid outlet pipe section; 44, negative pressure suction area; 45, liquid suction chamber; 421, constricted pipe; 422, annular assembly; 431, straight pipe; 432, assembly groove; 433, sealing ring; 401, constricted section; 402, straight pipe section; 403, flared section; 51, washing powder chamber; 52, dispensing chamber; 511, outlet; 70, pressure boosting nozzle.

[0076] It should be noted that these drawings and descriptions are not intended to limit the scope of the invention in any way, but rather to illustrate the solutions of the present application to those skilled in the art by reference to specific embodiments.DETAILED DESCRIPTION

[0077] In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments are clearly and completely described below in conjunction with the drawings in the embodiments of the present application. The following embodiments are used to illustrate the present application but are not used to limit the scope of the present application.

[0078] In the description of the present application, it should be noted that the directions or positional relationships indicated by terms such as “upper”, “lower”, “front”, “back”, “left”, “right”, “vertical”, “inside” and “outside” are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present application.

[0079] In the description of the present application, it should be noted that, unless otherwise clearly specified and limited, the terms “installed”, “connected”, and “connected” should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0080] As shown in FIGS. 1 to 8, in an embodiment of the present application, a washing machine includes: a water holding tub 200 for holding water, a rotatable washing drum 300 disposed in the water holding tub 200 for holding the load to be treated, and an automatic dispensing device 100 for directly dispensing an additive mixture into the washing drum 300. Through the above arrangement, the washing machine can realize the effect of directly dispensing the additive mixture into the washing drum 300 and directly spraying the dispensed additive mixture onto the load to be treated in the washing drum 300, thereby improving the utilization rate of additives.

[0081] In the present application, the additive can be liquid detergent, softener, disinfectant, etc.; the additive can also be solid washing powder, etc. In the present application, the automatic dispensing device 100 can also directly dispense washing powder into the washing drum 300. After user manually adds washing powder into the dispensing device 100, the water entering the dispensing device 100 first dissolves washing powder to form a washing powder solution, and the washing powder solution is then sprayed and dispensed directly onto the load to be treated in the washing drum 300 together with the inflowing water, thereby directly dispensing the concentrated washing powder solution onto laundry in the washing drum 300 to perform washing the laundry by concentrated solution. In this application, since washing powder is directly mixed in the dispensing device 100 to form a washing powder solution which is directly sprayed on laundry in the washing drum 300, there is no need to supply water into the water holding tub 200 when the washing machine performs subsequent washing and other programs. So it is avoided diluting the washing powder solution and it is greatly reduced in the amount of water consumption.

[0082] In the present application, a water outlet of a water supply pipeline 1 of the automatic dispensing device 100 can directly constitute a dispensing port of the dispensing pipeline 9, or the water outlet of the water supply pipeline 1 can be connected with the dispensing pipeline 9 separately arranged. The dispensing port of the dispensing pipeline 9 is connected with a nozzle through which the fluid is sprayed towards the inside of the washing drum 300 of the washing machine. The nozzle can be disposed on a housing, a door body, the water holding tub 200, and / or a window gasket of the washing machine, and an outlet of the nozzle is opened towards the inside of the washing drum 300, so that the additive mixture can be maximally sprayed directly onto the load placed in the washing drum 300 of the washing machine through the nozzle, to achieve the effect of washing laundry in a condition of non-immersion.Embodiment 1

[0083] As shown in FIGS. 1 to 8, an automatic dispensing device 100 with a function of dispensing washing powder according to the Embodiment of the present application includes: a dispensing box 5 with a washing powder chamber 51 for dispensing washing powder; a water tank 2, and a water supply pipeline 1. Water flowing into the water tank 2 is used to flush the washing powder placed in the washing powder chamber 51 into the water tank 2, and the washing powder is dissolved in water in the water tank to form a washing powder solution. A negative pressure suction structure 4 is disposed in the water supply pipeline 1, and a negative pressure is generated by the water flow flowing through the water supply pipeline 1. A negative pressure port 41 of the negative pressure suction structure 4 is connected with the water tank 2, and the washing powder solution in the water tank 2 is sucked into the water supply pipeline 1 by the negative pressure and dispensed with water flowing through the water supply pipeline 1.

[0084] By arranging the negative pressure suction structure in the water supply pipeline 1, the washing powder solution to be dispensed is sucked by using the water flowing through the water supply pipeline 1 separately arranged, to realize the effect of automatically sucking and dispensing the washing powder solution. The washing powder solution is directly sucked into the water supply pipeline 1, so the washing powder solution is directly mixed in the water supply pipeline 1 and dispensed into the washing drum 300 of the washing machine. Thereby the washing powder solution with a high concentration is used to directly wash laundry in the washing drum.

[0085] In the Embodiment, the negative pressure suction structure 4 is a Venturi tube 40 disposed in the water supply pipeline 1. The Venturi tube 40 includes a constricted section 401 with a pipe diameter being gradually narrowed, a straight pipe section 402 with a smaller pipe diameter, and a flared section 403 with an expanding pipe diameter, which are arranged in sequence. The straight pipe section 402 between the constricted section 401 and the flared section 403 is provided with the negative pressure port 41 for communicating the inside with the outside of the pipeline, and the negative pressure port 41 is connected with the washing powder solution outlet 211 provided at a bottom of the water tank 2 through a liquid sucking pipeline 13.

[0086] In the Embodiment, a top of the water tank 2 is provided with a water inlet structure, and the water inlet structure is connected with a water supply pipeline 11 of the water tank. The water inlet structure has an outlet at a top of the washing powder chamber 51 of the dispensing box 5, and the water flow is used to flush the washing powder in the washing powder chamber 51 into the water tank 2. Preferably, the top of the water tank 2 is covered with an upper cover 3, which is composed of a first part 31 and a second part 32 that are bucketed with each other. The contact surfaces of the two parts have respectively a concave-convex structure to form an integrated water pipeline; and at least part of the integrated water pipeline is as the water inlet structure.

[0087] In the Embodiment, the bottom of the water tank 2 is provided with a partition rib 23 for dividing a lower of the water tank 2 into a first drain trough 21 and a second drain trough 22. Bottoms of the first drain trough 21 and the second drain trough 22 are provided with a washing powder solution outlet 211 and a main outlet 221. The washing powder solution outlet 211 is connected with the negative pressure port 41 of the negative pressure suction structure 4 through the liquid sucking pipeline 13, and the main outlet 221 is connected with a dispensing pipeline of the dispensing device 100.

[0088] In the Embodiment, the first drain trough 21 and the second drain trough 22 are arranged sequentially in a front-rear direction. The first drain trough 21 is connected with an outlet 511 of the washing powder chamber 51 in the dispensing box, for allowing the washing powder solution to flow in. Preferably, the bottom of the first drain trough 21 is an inclined surface converging towards the washing powder solution outlet 211, which is used to guide liquid in the first drain trough 21 to flow towards the washing powder solution outlet 211.

[0089] In the Embodiment, the dispensing box 5 is installed in the water tank and can be pulled out. The dispensing box 5 has at least one dispensing chamber 52 for holding detergent. The integrated water pipeline provided on the upper cover 3 on the top of the water tank 2 is used to dispense the detergent in the dispensing box 5 into the second drain trough 22 of the water tank 2, or the detergent is directly dispensed from a dispensing pipeline 9 of the automatic dispensing device 100. Preferably, the dispensing chamber 52 for dispensing detergent and the washing powder chamber 51 are integrated on the same component of the dispensing box 5. Preferably, the bottom of the second drain trough 22 is an inclined surface converging towards the main outlet 221, which is used to guide the liquid in the second drain trough 22 to flow towards the main outlet 221.

[0090] In the Embodiment, the water tank 2 is provided with a drawer part capable of being pulled out from the front side. The drawer part is as the dispensing box 5. The drawer part is provided with at least one washing powder chamber 51 for holding washing powder and at least one dispensing chamber 52 for holding detergent and the like. Preferably, the front side of the water tank 2 has an opening for the drawer part to be pulled out, and the front side wall of the water tank 2 is constituted by a front baffle 24 vertically extending and located below the opening. A top end of the front baffle 24 is higher than a top end of the partition rib 23, so that the washing powder solution and the like flowing into the drain trough doses not overflow from the front side of the dispensing device 100.

[0091] In the Embodiment, the outlet of the water supply pipeline 1 and the outlet of the dispensing pipeline 9 respectively constitute the dispensing port for washing powder and the dispensing port for detergent of the automatic dispensing device. Or, the outlet of the water supply pipeline 1 is connected with the dispensing pipeline 9, and the outlet of the dispensing pipeline 9 constitutes the dispensing port of the automatic dispensing device for dispensing the washing powder solution and the liquid detergent solution.Embodiment 2

[0092] As shown in FIGS. 1 to 8, in the Embodiment, an automatic dispensing device includes: at least two water supply pipelines 1 which are a water supply pipeline 11 of a water tank and a dispensing water supply pipeline 12; a dispensing box 5, installed in the water tank 2 and having a washing powder chamber 51 for dispensing washing powder. The water supply pipeline 11 of the water tank is connected with a water inlet structure 8 of the water tank 2, and water flows into and is used to flush the washing powder in the washing powder chamber 51 into the water tank 2, and the washing powder is mixed in the water tank 2 to form a washing powder solution. The dispensing water supply pipeline 12 is connected with an outlet of the water tank 2, and the washing powder solution in the water tank 2 is sucked out by the water flow and dispensed outward together with the water flow.

[0093] Through the above arrangement, after water is supplied into two different water supply pipelines, the washing powder added in advance can be mixed to form the washing powder solution, and the washing powder solution can be sucked to be dispensed, thereby the washing powder added by user is automatically dispensed. At the same time, since the two water supply pipelines can be used synchronously, a process of mixing the washing powder and a process of sucking the washing powder solution can be executed synchronously, which greatly shortens the dispensing time of the washing powder by the dispensing device.

[0094] In the Embodiment, the automatic dispensing device 100 has a water inlet valve 6 having one inlet and two outlets. The one inlet is controlled to be in communication with one of the two outlets, or be in simultaneous communication with the two outlets, or be in simultaneous disconnection from the two outlets. The two outlets are respectively connected to inlets of the water supply pipeline 11 of the water tank and the dispensing water supply pipeline 12; or, the same outlet of the water inlet valve 6 is connected with the inlets of the water supply pipeline 11 of the water tank and the dispensing water supply pipeline 12 through a tee, so that the water supply pipeline 11 of the water tank and the dispensing water supply pipeline 12 can only be connected or disconnected synchronously, and the additive is automatically dispensed after being mixed. Thereby the washing machine can achieve the purpose of washing laundry with the high concentration detergent.

[0095] In the Embodiment, the water tank 2 is provided with the dispensing box 5 that can be pulled out. The dispensing box 5 is provided with a washing powder chamber 51, a bottom of the washing powder chamber 51 is provided with an outlet, and a top opening of the washing powder chamber 51 constitutes an inlet. At least the water outlet section of the water supply pipeline 11 of the water tank is integrated on an upper cover 3 on the top of the water tank 2. An outlet of the water supply pipeline 11 of the water tank is opened towards the top opening of the washing powder chamber 51, so that water from the outlet directly flows into the washing powder chamber 51. Preferably, the top of the water tank is covered with an upper cover 3, which is composed of a first part 31 and a second part 32 that are bucketed together up and down. The first part 31 and the second part 32 are connected with each other to form an integrated water pipeline by the contact surfaces, and at least part of the integrated water pipeline is as a water inlet structure 8. The water inlet structure is connected with the outlet of the water supply pipeline 11 of the water tank. The water supply pipeline 11 of the water tank is provided with a water outlet towards the lower side of the upper cover, and the water outlet is located above an upper opening of the washing powder chamber, so that the water flow from the water supply pipeline 11 of the water tank can directly flow into the washing powder chamber 51, and flush the washing powder into the drain trough in a lower of the water tank 2 to form a washing powder solution. More preferably, the first part 31 and the second part 32 of the upper cover 3 are connected by a fusion process to form a water pipeline being closed and pressure-bearing.

[0096] In the Embodiment, the dispensing water supply pipeline 12 is arranged below the water tank 2. A negative pressure suction structure 4 is arranged in a middle of the dispensing water supply pipeline 12, and a negative pressure port 41 of the negative pressure suction structure 4 is connected to the water tank 2 through a liquid sucking pipeline 13, for sucking the washing powder solution into the dispensing water supply pipeline 12.

[0097] In the Embodiment, the dispensing water supply pipeline 12 is also provided with a pressure boosting structure 7 for pressurizing the water flow, for forming a pressurized water flow in the water supply pipeline 1. The pressure boosting structure 7 is arranged upstream of the negative pressure suction structure 4, for using the pressurized water flow to perform high-speed impact on the washing powder solution for mixing and improve the mixing uniformity of the washing powder solution and the water flow. Preferably, the pressure boosting structure 7 is a pressure boosting nozzle 70 formed by a conical pipe, of which a radial dimension is gradually narrowed along a water flow direction.

[0098] In the Embodiment, the negative pressure suction structure 4 is a Venturi tube 40. The Venturi tube 40 is provided with a pipe section, of which the diameter is changed to cause a change of the flow rate of the water flowing through. The pipe section includes a negative pressure suction area 44 where the negative pressure is generated by using the water flowing through. The negative pressure suction area 44 is provided with a negative pressure port 41 for communicating the inside with outside. The negative pressure port 41 is connected to a washing powder solution outlet 211 of the water tank 2 through the liquid sucking pipeline 13, so that the washing powder solution is directly sucked into the dispensing water supply pipeline 12 through the negative pressure, and dispensed outward together with the water flow in the dispensing water supply pipeline 12. Preferably, an upstream end of the Venturi tube 40 is provided with a liquid suction chamber 45, and an interior of the liquid suction chamber 45 forms the negative pressure suction area 44 connected to the Venturi tube 40. A side wall of the liquid suction chamber 45 is provided with the negative pressure port 41 for communicating the inside with the outside, so that the negative pressure generated by the water flowing through the Venturi tube can be directly transferred to the liquid suction chamber 45, which greatly improves the diversity of the position where the negative pressure port 41 is arranged.

[0099] In the Embodiment, the pressure boosting structure 7 is a pressure boosting nozzle 70 arranged on the Venturi tube 40. The pressure boosting nozzle 70 is arranged at an inlet of the Venturi tube 40, for increasing the flow rate of the liquid flowing into the Venturi tube 40 and forming a high-pressure water flow. The high-pressure water flow can not only perform high-pressure impact on the washing powder solution sucked in the Venturi tube 40 to improve the mixing effect, but also can be used to increase the negative pressure generated at the pipe diameter expansion part at the outlet of the Venturi tube 40 when water flows through, to improve the efficiency of the Venturi tube 40 for sucking the washing powder solution in the water tank. Preferably, the pressure boosting nozzle 70 is arranged in the liquid suction chamber 45, and there is a gap between the pressure boosting nozzle 70 and the liquid suction chamber 45, and the gap constitutes the negative pressure suction area 44 and is directly in communication with to the Venturi tube 40.

[0100] In the Embodiment, the outlet of the dispensing water supply pipeline 12 is connected to the washing drum 300 of the washing machine through a nozzle, so that the washing powder solution is directly sprayed into the washing drum 300 of the washing machine for washing laundry in the washing drum 300 with a high concentration washing power solution.Embodiment 3

[0101] As shown in FIGS. 1 to 8, the Embodiment introduces a negative pressure suction structure 4, including: a liquid inlet pipe section 42 for allowing fluid to flow in; and a liquid outlet pipe section 43 having a flow path for allowing fluid to flow out. An outlet portion of the liquid inlet pipe section 42 is inserted into an inlet portion of the liquid outlet pipe section 43, and the liquid inlet pipe section 42 and the liquid outlet pipe section 43 are in communication with each other to form a flow path for water flow to pass through. A gap between an outer wall of the outlet portion of the liquid inlet pipe section 42 and an inner wall of the inlet portion of the liquid outlet pipe section 43 constitutes a negative pressure suction area 44 where a negative pressure is generated by the water flow flowing through the flow path, and the outer wall of the liquid outlet pipe section 43 is provided with a negative pressure port 41 for communicating the negative pressure suction area 44 with the outside.

[0102] Through the above arrangement, the negative pressure suction structure is integrated with a boosting structure. The water flowing into the negative pressure suction structure is first subjected to boosting and acceleration, so that the water pressure flowing through the negative pressure suction structure is greatly increased, accordingly it is increased in the negative pressure at the negative pressure suction area, Thereby it is significantly increased the rate of sucking the additive mixture. Through the above arrangement, in the injection process of the boosting structure formed by the constricted pipe, the negative pressure is generate in the negative pressure suction area, which further improves the negative pressure suction effect.

[0103] In the Embodiment, the outlet portion of the liquid inlet pipe section 42 is a constricted pipe 421 of which a diameter is gradually narrowed along the water flow direction. The inlet portion of the liquid outlet pipe section 43 is a straight pipe 431 coaxially sleeved on the outer wall of the constricted pipe, and an inner diameter of the straight pipe 431 is greater than a maximum outer diameter of the constricted pipe 421. The constricted pipe 421 of the liquid inlet pipe section 42 is extended into the straight pipe 431 of the liquid outlet pipe section 43, and the gap between the constricted pipe 421 and the straight pipe 431 constitutes the negative pressure suction area 44. The negative pressure port 41 is formed on the wall in the middle of the straight pipe 431. An outlet end of the constricted pipe 421 is inserted into the straight pipe 431 or inserted into the downstream of the straight pipe 431. So the pressurized water flow from the constricted pipe 421 directly flows in the straight pipe 431 with a larger radial dimension, the negative pressure is formed in the negative pressure suction area 44 between the straight pipe 431 and the constricted pipe 421 by using the injection effect, and the washing powder solution is sucked into the liquid inlet pipe section 42 from the negative pressure port 41. Since the high-pressure water flow from the constricted pipe 421 impacts on the washing powder solution sucked in by negative pressure, the water flow and the washing powder solution are stirred and mixed in the straight pipe, so it is greatly improved in the mixing uniformity of the washing powder solution and the water flow.

[0104] In the Embodiment, Venturi tube 40 is arranged downstream of the straight pipe 431, and the Venturi tube 40 is coaxially arranged downstream of the constricted pipe 421 of the liquid inlet pipe section 42. A minimum outer diameter of the constricted pipe 421 is smaller than a maximum inner diameter of the Venturi tube 40. Preferably, the minimum outer diameter of the constricted pipe 421 is smaller than a minimum inner diameter of the Venturi tube 40. By arranging the Venturi tube 40 in the liquid outlet pipe section, the Venturi tube 40 can use the negative pressure generated by the water flow to suck the washing powder solution sucked into the upstream straight pipe from the negative pressure port 41 and the high-pressure water sprayed from the constricted pipe 421 into the downstream pipeline together, so as to realize the effect of mixing and dispensing the washing powder solution and the high-pressure water.

[0105] In the Embodiment, the Venturi tube 40 of the liquid outlet pipe section 43 includes a constricted section 401, a straight pipe section 402, and a flared section 403, which are sequentially arranged along the water flow direction. A large-diameter end of the constricted section 401 is an inlet and is connected with the outlet of the straight pipe 431, and a large-diameter end of the flared section 403 is an outlet connected with the downstream pipeline. A minimum inner diameter of the constricted section 401 is greater than the minimum inner diameter of the constricted pipe 421 at the outlet portion of the liquid inlet pipe section 42, and is less than the maximum inner diameter of the constricted pipe 421 at the outlet portion of the liquid inlet pipe section 42.

[0106] In the Embodiment, an upstream end of the straight pipe 431 at the inlet portion of the liquid outlet pipe section 43 is sealed with the outlet portion of the liquid inlet pipe section 42, a downstream end is connected to the large-diameter end of the constricted section 401 of the Venturi tube 40, and the wall in the middle of the liquid outlet pipe section is provided with the negative pressure port 41 for communicating the inside with the outside of the pipe.

[0107] In the Embodiment, an outer wall of the liquid outlet portion of the liquid inlet pipe section 42 is provided with an annular assembly 422 being radially protruded, and an outer wall of the upstream end of the straight pipe 431 is provided with an assembly groove 432 being radially outwardly protruded, and the annular assembly 422 is correspondingly inserted in the assembly groove for assembly. Preferably, at least one sealing ring 433 is provided at a junction of the annular assembly 422 and the assembly groove 432 for sealing the junction between the liquid inlet pipe section 42 and the liquid outlet pipe section 43, so that the negative pressure suction area 44 formed by the gap between them is sealed, and the negative pressure can smoothly transferred to the negative pressure port 41 for sucking the washing powder solution.

[0108] In the Embodiment, the annular assembly 422 is arranged at the large-diameter end of the constricted pipe 421 of the liquid inlet pipe section 42, and an axial length of the constricted pipe 421 is greater than or equal to an axial length of the straight pipe 431 and less than the sum of the axial lengths of the straight pipe 431 and the constricted section 401 of the Venturi tube 40.

[0109] In the Embodiment, the inner diameter of the straight pipe 431 is greater than the maximum inner diameter of the constricted section 401, and the downstream end of the straight pipe 431 is connected with the large-diameter end of the constricted section 401 through a transition portion.

[0110] In the Embodiment, a diameter of the negative pressure port 41 is smaller than the maximum inner diameter of the constricted section 401 and greater than the minimum inner diameter of the constricted pipe 421.Embodiment 4

[0111] As shown in FIGS. 1 to 8, a water tank structure of an automatic dispensing device in the Embodiment includes a water tank 2 as a groove shape. The water tank 2 is divided into at least two independent chambers, in which different additive mixtures flow in for mixing. Two of the chambers of the water tank are a first drain trough 21 and a second drain trough 22, and a bottom of each of two drain troughs is provided with at least one outlet for allowing the washing powder solution or detergent water to flow out, so as to dispense the washing powder solution and detergent water into the washing machine.

[0112] Through the above arrangement, the water tank of the washing machine can have a plurality of different drain troughs, and different additives can be mixed in the corresponding drain troughs, so it is avoided that different additives are mixed. Due to two different drain troughs in the water tank, the solution is flowed out from the outlet of the other drain trough when one of the drain troughs is overflowed, so that it is effectively avoided problems such as overflow from the front side of the automatic dispensing device.

[0113] In the Embodiment, the bottom of the water tank 2 is provided with a partition rib 23 extending vertically upward. The partition rib 23 itself or the partition rib 23 and the side wall of the water tank 2 together form an independent part inside the water tank to form the first drain trough 21; the other part of the water tank 2 constitutes the second drain trough 22.

[0114] In the Embodiment, the partition rib 23 includes a first partition part 231 extending along a front-rear direction of the water tank 2 and a second partition part 232 extending along a left-right direction of the water tank 2. A rear end of the first partition part 231 is connected to a rear wall of the water tank 2, a front end is connected to a right end of the second partition part 232, and a left end of the second partition part 232 is connected to a left side wall of the water tank 2, so that the rear part of the water tank 2 is divided by the partition rib 23 to form the first drain trough 21 in the left half.

[0115] In the Embodiment, the bottom of the first drain trough 21 is provided with a washing powder solution outlet 211, and the bottom of the first drain trough 21 is inclined downward and toward the washing powder solution outlet 211. Preferably, the bottom of the first drain trough 21 is a slope gradually inclined downward from the rear to the front, and the washing powder solution outlet 211 is located on the front of the first drain trough 21. More preferably, the front of the first drain trough 21 near the second partition part 232 is provided with a recess 212 downwardly recessed, a side wall of the recess 212 is a conical surface inclined downward from the periphery to the center, and the washing powder solution outlet 211 is located at a lowest in the center of the recess 212.

[0116] In the Embodiment, the front wall of the water tank is composed of a front baffle 24 of the water tank. Since a dispensing box 5 is installed in the water tank and capable of being drawn out from the front side, a height of the front baffle 24 of the water tank is lower than that of other walls, and it is located below the dispensing box 5 for the dispensing box to be drawn out for use. There is a gap between the second separation part 232 and the front baffle 24 of the water tank, and the bottom of the water tank 2 at the gap is provided with a main outlet 221, and the main outlet is located in the second drain trough 22. Preferably, the top end of the front baffle 24 is higher than the top end of the separation rib 23. More preferably, an upper of the second partition part 232 is provided with a notch 233, so that a top end of at least part of the second partition part 232 is lower than a top end of the first partition part 231. Water flowing out of the first drain trough 21 from the first partition part 231 enters the second drain trough 22, and can be smoothly discharged from the main outlet 221, so that it is effectively avoided that the washing powder solution is overflowed from the first drain trough 21.

[0117] In the Embodiment, the bottom of the second drain trough 22 is an inclined surface that is inclined downward from the periphery to the main outlet. Preferably, the bottom of the second drain trough 22 is an inclined surface that gradually inclined downward from back to front and from right to left, so that the main outlet 221 located on the left front side is located at the lowest of the second drain trough 22, and is used to guide the water in the second drain trough 22 to flow out to the main outlet 221.

[0118] In the Embodiment, a dispensing box 5 that can be pulled out is installed on the upper of the water tank 2, and the dispensing box 5 is provided with a washing powder chamber 51. A rear side of the washing powder chamber 51 is provided with an outlet 511, and the outlet 511 is located above the first drain trough 21. The washing powder solution flowing out of the washing powder chamber 51 from the outlet 511 enters the first drain trough 21 and then flows out from the washing powder solution outlet 211.

[0119] In the Embodiment, the rear wall of the water tank 2 is provided with a water inlet joint. The water inlet joint is connected with the water inlet structure 8 formed by the integrated waterway in the upper cover 3 on the top of the water tank 2, and is used to supply water to the water inlet structure 8 in the upper cover 3. A water outlet of the water inlet structure 8 is located above the opening of the washing powder chamber 51 of the dispensing box 5, so that water flowing into the water inlet structure 8 flows into the washing powder chamber 51 from the water outlet, and is mixed with the washing powder in the washing powder chamber 51 to form the washing powder solution. The washing powder solution flows into the first drain trough 21 from the outlet 511 on the rear wall, and then is discharged from the washing powder solution outlet 211 for dispensing.Embodiment 5

[0120] As shown in FIGS. 1 to 8, an automatic dispensing device in this Embodiment includes a water supply pipeline 1 for allowing water to flow through, and a dispensing unit for dispensing an additive mixture into the water supply pipeline 1. The water supply pipeline 1 has a pressure boosting structure 7 for increasing the water pressure of the flowing water. The pressurized water flow performs high-pressure impact on the additive mixture flowing into the water supply pipeline for mixing.

[0121] Through the above setting, the pressure boosting structure is used to form a pressurized water flow in the water supply pipeline, and the pressurized water flow can perform directly high-pressure impact on the additive mixture such as washing powder solution and liquid detergent solution suctioned into the water supply pipeline, so that the pressurized water flow can accelerate the mixing uniformity, and further improve the dispensing effect of the additives. The high-pressure water flow can also be used to increase the flow rate of water flowing into the negative pressure suction structure arranged in the water supply pipeline, so that it is increased in the negative pressure generated by the water flow, and further increased in the rate of suctioning the additive mixture such as the washing powder solution and the liquid detergent solution in the water tank.

[0122] In the Embodiment, the pressure boosting structure 7 is located upstream of a connection between the dispensing unit and the water supply pipeline 1, so that the pressurized water flow formed by the pressure boosting structure directly impacts on the dispensed additive mixture.

[0123] In the Embodiment, the pressure boosting structure 7 is a pressure boosting nozzle 70 formed by a conical tube of which a diameter is gradually narrowed along a water flow direction.

[0124] In the Embodiment, the dispensing unit includes a negative pressure suction structure 4 arranged in the water supply pipeline 1 and used for generating negative pressure by the water flowing through. A negative pressure port 41 of the negative pressure suction structure 4 is connected with the outlet of the water tank 2 through a liquid sucking pipeline 13, so that the additive mixture such as washing powder and / or liquid detergent in the water tank 2 is suctioned into the water supply pipeline 1 by using negative pressure, and mixed with the water flow, and then dispensed outward.

[0125] In the Embodiment, the pressure boosting structure 7 is located at the inlet of the negative pressure suction structure 4. So the pressurized water flow can directly impact the washing powder solution and the liquid detergent solution, etc. suctioned into the water supply pipeline 1, thereby improving the mixing effect of the dispensed additives. And the pressurized water flow can also increase the rate of the water flowing into the negative pressure suction structure 4, thereby increasing the negative pressure generated by the water flow, and further increasing the rate of suctioning the additive mixture such as the washing powder solution and the liquid detergent solution in the water tank 2.

[0126] In the Embodiment, the negative pressure suction structure 4 includes a liquid suction chamber 45 and a Venturi tube 40 connected in series in the water supply pipeline 1. The liquid suction chamber 45 is provided with the negative pressure port 41, and the negative pressure port 41 is connected with the outlet of the water tank 2 through the liquid sucking pipeline 13. The pressure boosting nozzle 70 is disposed in the liquid suction chamber 45, and the outlet of the pressure boosting nozzle 70 is arranged toward and coaxially the inlet of the Venturi tube 40. There is a gap between the pressure boosting nozzle 70 and the Venturi tube 40, which is used to connect the liquid suction chamber 45 with the Venturi tube 40. A large negative pressure is generated in the Venturi tube 40 by directly using the pressurized water flowing from the pressure boosting nozzle 70, and the negative pressure acts on the liquid suction chamber 45 through the gap, so that a negative pressure suction area 44 is formed in the liquid suction chamber 45. The additive mixture such as the washing powder solution and the liquid detergent solution in the water tank 2 is suctioned into the water supply pipeline 1 through the negative pressure port 41, and the pressurized water flow is directly mixed with the suctioned additive mixtures such as the washing powder solution and the liquid detergent solution, so that the uniform mixture is directly sprayed from the dispensing port downstream of the water supply pipeline 1.Embodiment 6

[0127] In the Embodiment, a control method for an automatic dispensing device includes:

[0128] S100: supplying water to a water tank, and allowing a pre-dispensed washing powder and / or liquid detergent to flow into the water tank together with the water to form a washing powder solution;

[0129] S200: supplying water to a water supply pipeline outside the water tank to form a negative pressure by using the water flow, suctioning the washing powder solution in the water tank into the water supply pipeline by the negative pressure, and dispensing the washing powder solution outward together with the water flow.

[0130] Through the above setting, the additives such as washing powder and liquid detergent can be dissolved and mixed in the water tank first, and then suctioned into the water supply pipeline for dispensing, so that the dissolution and the suction dispensing of the additives are performed in steps. The additives such as washing powder and liquid detergent can be automatically mixed and dispensed; thereby the washing machine can perform high-concentration washing by using various forms of additives such as washing powder and liquid detergent.

[0131] In the Embodiment, the water flowing through the water supply pipeline is pressurized by a pressure boosting structure to form a pressurized water flow, and the pressurized water flow is mixed with the washing powder solution suctioned in by using negative pressure to improve the mixing uniformity.

[0132] In the Embodiment, the washing powder and / or liquid detergent first are placed in a dispensing chamber of the dispensing box, and the water flow supplied to the water tank directly flows into the dispensing chamber. The water flow flushes the washing powder and / or liquid detergent into the drain trough in the lower of the water tank, to mixes in the drain trough to form the washing powder solution.

[0133] Preferably, the drain trough is provided with a mixing structure that improves the mixing uniformity of the washing powder and / or liquid detergent. The mixing structure can be any existing structure that can improve the mixing uniformity, such as a stirring impeller driven to rotate by a motor. The stirring impeller directly stirs the water, washing powder and / or liquid detergent in the drain trough to form the washing powder solution.

[0134] In the Embodiment, step S100 of supplying water to the water tank and step S200 of supplying water to the water supply pipeline outside the water tank can be performed synchronously or alternately. For example: step S100 is first performed for supplying water to the water tank 2 through the water tank water supply pipeline 11, and then step S200 is performed for supplying water to the dispensing water supply pipeline 12 outside the water tank 2 to suction the additive mixture such as the washing powder solution for dispensing.

[0135] As shown in FIG. 9, in the Embodiment, the control method for the automatic dispensing device includes the following steps:

[0136] S1. connecting the water supply pipeline 11 of the water tank, and disconnecting the dispensing water supply pipeline 12; supplying water to the water tank 2, and allowing the washing powder and / or liquid detergent pre-dispensed into the dispensing chamber 52 of the dispensing box 5 to flow into the drain trough in the lower of the water tank 2 together with the water flow;

[0137] S 2. if the water level in the drain trough (being the first drain trough 21 in the above Embodiment) reaches a set value, disconnecting the water supply pipeline 11 and the dispensing water supply pipeline 12 of the water tank at the same time, and stopping supplying water to the water tank 2;

[0138] S3. fully mixing the washing powder and / or liquid detergent with water in the drain trough to form the washing powder solution;

[0139] S4. connecting the dispensing water supply pipeline 12, and disconnecting the water supply pipeline 11 of the water tank, supplying water to the dispensing water supply pipeline 12 outside the water tank 2 to generate the negative pressure by the water flow, and suctioning the washing powder solution in the drain trough of the water tank into the dispensing water supply pipeline 12 and dispensing outward together with the water flow.

[0140] In the Embodiment, in performing the step S3, the mixing structure in the drain trough can start working synchronously to accelerate the mixing and dissolution of the washing powder and / or liquid detergent with water, and to improve the uniformity. The mixing structure can be a stirring impeller driven to rotate by a motor. The stirring impeller directly stirs water, washing powder and / or liquid detergent in the drain trough to form the washing powder solution with high uniformity. A heating tube can also be arranged in the drain trough, and is used to heat water, washing powder and / or liquid detergent in the drain trough to increase the mixing rate (the mixing structure is not shown in the drawings in the application).

[0141] In the Embodiment, in performing the step S3, after time for stopping supplying water to the water tank reaches a set value, and / or after the uniformity of the mixture of additives in the drain trough is detected to reach a set value, it is determined that the mixture of additives is formed, and the step S4 is performed.

[0142] As shown in FIG. 8, in the Embodiment, the automatic dispensing device 100 according to any one of the above Embodiments 1 to 5 is applied. The water supply pipeline 11 of the water tank is used to supply water to the water tank 2, and the dispensing water supply pipeline 12 is used to suction the mixture of additives in the water tank 2. The inlets of the water supply pipeline 11 of the water tank and the dispensing water supply pipeline 12 are respectively connected to two outlets of a water inlet valve 6 having one inlet and two outlets. The inlet of the water inlet valve 6 is connected to the water inlet pipe of the washing machine, so as to control one of the water supply pipeline 11 of the water tank and the dispensing water supply pipeline 12 to supplying water by switching the water inlet valve 6.

[0143] Embodiment 7

[0144] A washing machine in the Embodiment is provided with the dispensing device 100 according to any one of the Embodiments 1 to 6. The water supply source of the dispensing device 100 is from the water inlet pipe of the washing machine. The inlets of the water supply pipelines 1 are connected to the water inlet pipe of the washing machine through the water inlet valve 6, so that the washing water can be controlled to flow into any one or a combination of the water supply pipelines 1 through automatically switching the water inlet valve.

[0145] By providing the above dispensing device 100 in the washing machine in the present application, the additive directly flows to the nozzle through the water supply pipeline 1 or the dispensing pipeline 9 of the washing machine, wherein the nozzle can be any existing structure, and preferably utilizes a technical solution that can maximize the dispensing of the mixture of additives into the washing drum. The mixture of additives is directly sprayed into the washing drum 300 by the nozzle, so that the additives can directly flow into the washing drum 300 of the washing machine from the water pipeline of the dispensing device 100 without passing through the water holding tub 200 outside the washing drum 300. The additives are sprayed onto the load to be treated, thereby directly spraying the mixture of additives onto the load to be treated in the washing drum 300 for washing. At the same time, through the above arrangement of the above dispensing device 100 being equipped in the washing machine, the mixture of additives is formed by mixing the additives with a small amount of water in the water supply pipeline 1, and the mixture of additives is directly sprayed onto the load to be treated in the washing drum 300, so that the utilization rate of the dispensed additives is significantly improved.

[0146] The above description is only a preferred embodiment of the present application, and does not limit the present application. Although the present application has disclosed preferred embodiments, it is not intended to limit the present application. Without departing from the scope of the technical solution of the present application, anyone in the field of this patent application can be hinted to make some changes or modifications as equivalent embodiments by the above technical content. Any simple modification, equivalent change and modification made to the above embodiments according to the substantive content of the present application still belong to the scope of the solution of the present application.

Claims

1. A dispensing device, including:a dispensing box, having a washing powder chamber for dispensing washing powder;a water tank; anda dispensing water supply pipeline, wherein,water flowing into the water tank of the dispensing device is used to flush the washing powder in the washing powder chamber into the water tank to form a washing powder solution;a negative pressure suction structure is disposed in the dispensing water supply pipeline, so that a negative pressure is generated by the water flow flowing through the dispensing water supply pipeline;the negative pressure suction structure is connected with the water tank, so that the washing powder solution in the water tank is sucked into the dispensing water supply pipeline by the negative pressure.

2. The dispensing device according to claim 1, wherein, the negative pressure suction structure is a Venturi tube disposed in the dispensing water supply pipeline;the Venturi tube has a constricted section and a flared section, which are arranged in sequence;a negative pressure port is formed at a connection between the constricted section and the flared section for communicating the inside with the outside of the pipeline; andthe negative pressure port is connected with a washing powder solution outlet provided at a bottom of the water tank through a liquid sucking pipeline.

3. The dispensing device according to claim 1, wherein, a top of the water tank is provided with a water inlet structure, and the water inlet structure is connected with a water supply pipeline of the water tank;the water inlet structure has an outlet facing the washing powder chamber of the dispensing box, so that the water flow is used to flush the washing powder in the washing powder chamber into the water tank.

4. The dispensing device according to claim 1, wherein, a bottom of the water tank is provided with a partition rib for dividing a lower portion of the water tank into a first drain trough and a second drain trough;bottoms of the first drain trough and the second drain trough are provided with a washing powder solution outlet and a main outlet; andthe washing powder solution outlet is connected with the negative pressure port of the negative pressure suction structure through a liquid sucking pipeline, and the main outlet is connected with a dispensing pipeline of the dispensing device.

5. The dispensing device according to claim 4, wherein,the first drain trough and the second drain trough are arranged sequentially in a front-rear direction;the first drain trough is connected with an outlet of the washing powder chamber, for allowing the washing powder to flow in together with water flow.

6. The dispensing device according to claim 5, wherein, the dispensing box has at least one dispensing chamber for holding detergent, so that the detergent in the dispensing chamber is dispensed into the second drain trough of the water tank by using a water inlet structure arranged on a top of the water tank.

7. The dispensing device according to claim 6, wherein, the water tank is provided with a drawer part capable of being pulled out from a front side;the drawer part is as the dispensing box;the dispensing box is provided with at least one washing powder chamber for holding washing powder and at least one dispensing chamber for holding detergent;the front side of the water tank has an opening for the drawer part to be pulled out;a front side wall of the water tank is constituted by a front baffle vertically extending and located below the opening;a top end of the front baffle is higher than a top end of the partition rib.

8. (canceled)9. The dispensing device according to claim 1, including, a water supply pipeline of the water tank; wherein,an upper cover is arranged on a top of the water tank, a water inlet structure is arranged on the upper cover, and the water supply pipeline of the water tank is connected with the water inlet structure;a water outlet of the water inlet structure is opened toward the washing powder chamber below, for allowing water to flow into the water tank through the washing powder chamber.

10. (canceled)11. (canceled)12. The dispensing device according to claim 3, wherein, the dispensing device is provided with a water inlet valve having one inlet and two outlets;the one inlet is controlled to be in communication with one of the two outlets, or be in simultaneous communication with the two outlets, or be in simultaneous disconnection from the two outlets;the two outlets are respectively connected to an inlet of the water supply pipeline of the water tank and an inlet of the dispensing water supply pipeline;or, a water inlet pipe of the dispensing device is connected with the inlets of the water supply pipeline of the water tank and the dispensing water supply pipeline through a tee.

13. (canceled)14. (canceled)15. The dispensing device according to claim 1, wherein, the dispensing water supply pipeline is also provided with a pressure boosting structure for pressurizing the water flow to form a pressurized water flow in the dispensing water supply pipeline;the pressure boosting structure is arranged upstream of the negative pressure suction structure, for using the pressurized water flow to perform high-speed impact on the washing powder solution for mixing;the pressure boosting structure is a pressure boosting nozzle formed by a conical pipe, of which a radial dimension is gradually narrowed along a water flow direction.

16. (canceled)17. The dispensing device according to claim 15, wherein, the negative pressure suction structure includes a liquid suction chamber and the Venturi tube connected in series in the dispensing water supply pipeline;a boosting nozzle is arranged in the liquid suction chamber, and the boosting nozzle is connected with an inlet of the liquid suction chamber, so that the boosting nozzle is used to accelerate the flow rate of water flowing into the Venturi tube.

18. The dispensing device according to claim 17, wherein, the boosting nozzle, the liquid suction chamber, and the Venturi tube are all arranged coaxially;there is a gap between the boosting nozzle and an inner wall of the liquid suction chamber;the negative pressure port is opened on a wall of the liquid suction chamber, and the negative pressure port is connected with the Venturi tube through the gap, so that the negative pressure generated by the Venturi tube is applied to the liquid suction chamber, to form the negative pressure suction area in the liquid suction chamber for generating negative pressure.

19. (canceled)20. (canceled)21. The dispensing device according to claim 1, wherein, the negative pressure suction structure, includes:a liquid inlet pipe section, for allowing fluid to flow in;a liquid outlet pipe section, for allowing fluid to flow out;an outlet portion of the liquid inlet pipe section is inserted into an inlet portion of the liquid outlet pipe section, and the liquid inlet pipe section and the liquid outlet pipe section are in communication with each other to form a flow path for water flow to pass through;a gap between an outer wall of the outlet portion of the liquid inlet pipe section and an inner wall of the inlet portion of the liquid outlet pipe section constitutes a negative pressure suction area where a negative pressure is generated by the water flow flowing through the flow path;the outer wall of the liquid outlet pipe section is provided with a negative pressure port for communicating the negative pressure suction area with the outside;the outlet portion of the liquid inlet pipe section is a constricted pipe, of which a diameter is gradually narrowed along a water flow direction;the inlet portion of the liquid outlet pipe section is a straight pipe coaxially sleeved on an outer wall of the constricted pipe, and an inner diameter of the straight pipe is greater than a maximum outer diameter of the constricted pipe;a Venturi tube is arranged downstream of the straight pipe, and the Venturi tube is coaxially arranged downstream of the constricted pipe of the liquid inlet pipe section; anda minimum outer diameter of the constricted pipe is smaller than a maximum inner diameter of the Venturi tube.

22. (canceled)23. The dispensing device according to claim 21, wherein, the Venturi tube includes a constricted section, a straight pipe section, and a flared section, which are sequentially arranged along the water flow direction; anda minimum inner diameter of the constricted section is greater than a minimum inner diameter of the constricted pipe, and is less than a maximum inner diameter of the constricted pipe.

24. The dispensing device according to claim 22, wherein, an upstream end of the straight pipe at the inlet portion of the liquid outlet pipe section is sealed with the outlet portion of the liquid inlet pipe section, a downstream end is connected to an inlet end of the Venturi tube, and a wall in a middle of the liquid outlet pipe section is provided with the negative pressure port for communicating the inside with the outside of the pipe.

25. The dispensing device according to claim 24, wherein, an outer wall of the liquid outlet portion of the liquid inlet pipe section is provided with an annular assembly being radially protruded;an outer wall of the upstream end of the straight pipe is provided with an assembly groove being radially outwardly protruded, and the annular assembly is correspondingly inserted in the assembly groove for assembly.

26. The dispensing device according to claim 25, wherein, the annular assembly is arranged at a large-diameter end of the constricted pipe of the liquid inlet pipe section;an axial length of the constricted pipe is greater than or equal to an axial length of the straight pipe, and less than a sum of the axial lengths of the straight pipe and the flared section.

27. The dispensing device according to claim 24, wherein, the inner diameter of the straight pipe is greater than the maximum inner diameter of the Venturi tube, and the downstream end of the straight pipe is connected with the large-diameter end of the constricted section through a transition portion.

28. The dispensing device according to claim 24, wherein, a diameter of the negative pressure port is smaller than the maximum inner diameter of the Venturi tube, and greater than the minimum inner diameter of the constricted pipe.

29. (canceled)30. A washing machine, including, a washing drum and the dispensing device according to claim 1, wherein, an inlet of the dispensing water supply pipeline and an inlet of a water supply pipeline of the water tank of the dispensing device are connected with a water inlet pipe of the washing machine;a dispensing port of the dispensing device is connected with the washing drum for dispensing the washing powder solution into the washing drum.

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