WO2023185316A1

WO2023185316A1 - Automatic additive dispensing device and washing machine control method

Info

Publication number: WO2023185316A1
Application number: PCT/CN2023/077104
Authority: WO
Inventors: 宋秀顺; 刘尊安; 刘建设; 庄仲凯; 刘云凤
Original assignee: 青岛海尔洗衣机有限公司; 海尔智家股份有限公司
Priority date: 2022-03-31
Filing date: 2023-02-20
Publication date: 2023-10-05
Also published as: CN116926861A

Abstract

An automatic additive dispensing device and a washing machine control method, the automatic dispensing device comprising: at least two liquid storage boxes (10), which are respectively used for storing additives; and at least two water supply paths (1), the two water supply paths (1) are connected to a respective liquid storage box(10) correspondingly, the two water supply paths (1) are each provided with a negative pressure suction structure (2) which generates negative pressure at a suction nozzle (15) of the negative pressure suction structure(2) by respectively using water flow of a corresponding water supply path(1). The suction nozzles (15) of the two negative pressure suction structures (2) are in communication with each other by means of a connecting water path (11), and any one of the negative pressure suction structures (2) is used for extracting an additive in the liquid storage box (10) connected to the other water supply path (1).

Description

An automatic adding device and washing machine control method

Technical field

The present invention relates to an automatic additive delivery module, in particular to a delivery module for a variety of different additives that can be used in a washing machine, and also relates to a control method for a washing machine equipped with the above additive delivery module.

Background technique

In a traditional washing machine, the detergent is placed separately from the washing machine during the washing process. There is no detergent adding device on the washing machine, and the detergent cannot be added automatically. This structure cannot realize a fully automatic washing process. With the improvement of the automation of washing machines, most washing machines are configured to communicate the detergent box containing detergent or/and softener with the water inlet pipe, and the detergent or/and softener in the detergent box is flushed into the washing tub through the water inlet. , but this structure must first put detergent or/and softener into the detergent box for each laundry, and also does not realize a fully automatic laundry control process.

There are currently a large number of existing technologies related to automatic detergent dispensing devices, such as:

A detergent supply device for a washing machine with a detergent box of a siphon unit, which injects detergent into the detergent box, and then injects wash water into the detergent box to dilute the detergent in the box and then discharges it from the siphon unit into the washing tub. This invention solves the problem of damaging the laundry caused by concentrated detergent entering the washing tub directly, but it cannot realize automatic and precise control of the detergent additive.

There is also a washing machine and a washing method that automatically add detergent. The washing machine includes: a washing tub, a control panel including various cloth quality control buttons, a weight sensor of laundry, a temperature sensor located in the washing tub, and water hardness. Sensor, washing water turbidity sensor, detergent box and computer board; the detergent box is composed of an upper storage box and a lower dilution box. The computer board controls the amount of detergent in the storage box entering the dilution box based on the detection results of various sensors. . The upper cover of the storage box is equipped with a detergent inlet, and the bottom is provided with a detergent discharge port and a solenoid valve that controls the closing and opening of the detergent discharge port; the side of the dilution box is provided with a water injection pipe connected to the water inlet valve of the washing machine, and the bottom is provided with Siphon discharge pipe; the excitation coil of the solenoid valve is located on the upper cover of the storage box, and the armature of the solenoid valve is connected to the conical valve plug located on the detergent discharge port at the bottom of the storage box through the valve stem. The conical valve plug is connected to the There is a compression spring between the upper covers. Although this structure can achieve precise control of detergent, it is complex and costly.

There is also a laundry method and a washing machine that automatically add detergent using negative pressure. The washing machine includes a water inlet, a detergent container and a washing drum. There are two water inlet passages between the water inlet and the washing drum, one for the main inlet and one for the main inlet. Waterway and cleaning waterway. There is a constant volume container between the cleaning waterway and the washing tub. The constant volume container is connected with the detergent container. There is a venturi tube in the main water inlet. The main inlet water flow uses the Venturi effect principle. The water flow is from coarse to large. It becomes thinner and speeds up the inlet water flow, so that a relative vacuum zone is formed on the back side of the outlet of the venturi tube. This relative vacuum zone is connected to the constant volume container, causing the constant volume container to generate negative pressure, and the detergent container connected to the constant volume container is Pump the detergent inside into a fixed volume container. This invention uses the negative pressure generated by the water flow to automatically add detergent without affecting the washing effect. However, because it requires a switching valve, the cost is high and separate cleaning is required. The waterway flushes the detergent in the fixed volume container into the washing tub.

In view of the above problems, the present invention is proposed.

Contents of the invention

The object of the present invention is to provide an automatic dosing device for additives to realize the purpose of automatically dosing additives in different liquid storage boxes respectively; at the same time, another object of the present invention is to provide a control device for a washing machine equipped with the above dosing module. Method to achieve the purpose of automatically extracting and automatically dispensing additives in different liquid storage boxes.

In order to achieve the above-mentioned object of the invention, the specific solutions adopted by the present invention are as follows:

The invention provides an automatic additive delivery device, which includes:

At least two liquid storage boxes, respectively used for additive storage;

There are at least two water supply waterways, and the two water supply waterways are connected to different liquid storage boxes in a one-to-one correspondence;

Each of the two water supply waterways is provided with a negative pressure suction structure, and the water flow in the corresponding water supply waterway is used to generate negative pressure at the negative pressure suction structure;

The suction ports of the two negative pressure suction structures are connected through a connecting waterway, and any negative pressure suction structure is used to extract additives from a liquid storage box connected to the other water supply waterway.

Further, a first negative pressure suction structure is provided on the first water supply waterway, and a first suction port is provided on the first negative pressure suction structure, and the water flow of the first water supply waterway is used to form a negative pressure at the first suction port. ;

A second negative pressure suction structure is provided on the second water supply waterway, and a second suction port is provided on the second negative pressure suction structure, and the water flow in the second water supply waterway is used to form a negative pressure at the second suction port;

The first suction port and the second suction port are directly connected through the connecting waterway;

Preferably, the negative pressure suction structure is a venturi tube.

Further, a flow meter is provided on the connecting waterway, which is used to measure the liquid that is pumped by the second negative pressure and flows from the first water supply waterway through the connecting waterway into the second water supply waterway due to the negative pressure generated by the first negative pressure suction structure. The suction structure generates a negative pressure and the liquid flowing into the first water supply channel from the second water supply channel through the connecting water channel is measured respectively.

Further, the first water supply waterway is connected to the first liquid storage box through the first delivery waterway, and the connection point between the first delivery waterway and the first water supply waterway is located downstream of the first negative pressure suction structure;

The second water supply waterway is connected to the second liquid storage box through the second delivery waterway, and the connection point between the second delivery waterway and the second water supply waterway is located downstream of the second negative pressure suction structure;

Preferably, a first delivery one-way valve is provided on the first delivery waterway, which is used to control the first delivery waterway to only extract the first delivery water in one direction. 1. Additives in the liquid storage box;

The second dosing waterway is provided with a second dosing one-way valve, which is used to control the second dosing waterway to only extract the additive in the second liquid storage box in one direction.

Further, a first fixed volume cavity is provided on the first water supply waterway, and the first fixed volume cavity is located between the first negative pressure suction structure and the first discharge waterway;

A second constant volume cavity is provided on the second water supply waterway, and the second constant volume cavity is located between the second negative pressure suction structure and the second delivery waterway.

Further, the inlet of the first water supply waterway is provided with a first water inlet valve that controls the opening and closing of the waterway, and the outlet is provided with a first water inlet one-way valve that ensures one-way flow of the waterway;

The inlet of the second water supply waterway is provided with a second water inlet valve that controls the opening and closing of the waterway, and the outlet is provided with a second water inlet one-way valve that ensures one-way flow of the waterway;

Preferably, the inlets of the first water supply waterway and the second water supply waterway are connected to the water inlet of the automatic delivery device, and the outlets of the first water supply waterway and the second water supply waterway are connected to the water outlet of the automatic delivery device.

Further, the first water supply water channel is connected in parallel with the first water inlet water channel, and the water inlet end of the first water inlet water channel is connected with the first water supply water channel portion between the first water inlet valve and the first negative pressure suction structure. The water outlet end is connected to the first water supply waterway portion downstream of the first water inlet check valve;

The second water supply waterway is connected in parallel with a second water inlet waterway. The inlet end of the second water inlet waterway is connected to the portion of the second water supply waterway between the second water inlet valve and the second negative pressure suction structure. Connected to the second water supply waterway portion downstream of the second water inlet check valve;

Preferably, the first water inlet waterway and the second water inlet waterway are each provided with a one-way check valve to maintain only one-way water flow from the water inlet end to the water outlet end in the water inlet waterway.

The invention also discloses a control method for a washing machine with any of the above-mentioned automatic adding devices, which includes:

When adding the additive in the first liquid storage box,

First, the second water supply water channel is opened and the first water supply water channel is disconnected. Under the action of the water flow in the second water supply water channel, the second suction port of the second negative pressure suction structure generates negative pressure, and the water in the first water supply water channel is passed through. The connecting water channel is pumped into the second water supply channel, and at the same time, the additive in the first liquid storage box is pumped into the first water supply channel;

Then the first water supply waterway is opened, and the water flow in the first water supply waterway dilutes the additive extracted from the first liquid storage box through the Inject the water outlet of the automatic dispensing device into the washing machine;

and / or,

When adding the additive in the second liquid storage box,

First, the first water supply water channel is opened and the second water supply water channel is disconnected. Under the action of the water flow in the first water supply water channel, the first suction port of the first negative pressure suction structure generates negative pressure, and the water in the second water supply water channel is passed through. The connecting water channel is pumped into the first water supply channel, and at the same time, the additive in the second liquid storage box is pumped into the second water supply channel;

Then the second water supply water channel is opened, and the water flow in the second water supply water channel dilutes the additive extracted from the second liquid storage box and injects it into the washing machine through the water outlet of the automatic dispensing device.

Further, when the additive in the first liquid storage box is put in, the water flowing through the connecting waterway and flowing from the first water supply waterway into the second water supply waterway is measured, and the measured amount is the amount of the first additive;

When adding the additive in the second liquid storage box, the water flowing through the connecting water channel and flowing from the second water supply water channel into the first water supply water channel is measured, and the measured amount is the amount of the second additive.

Further, when the washing machine does not add additives, the first water supply water channel and the second water supply water channel are opened at the same time, and the inlet water flows into the barrel of the washing machine through the first water supply water channel and the second water supply water channel.

Compared with the existing technology, the present invention has the following significant technical progress:

Through the above arrangement, the delivery device can use the negative pressure suction structures provided on different water supply waterways to automatically extract the additives in the liquid storage box connected to another water supply waterway, thereby realizing the automatic extraction of additives in multiple liquid storage boxes respectively. , the effect of putting in; at the same time, because the negative pressure suction structures of the two water supply waterways are directly connected through the pipeline, the negative pressure can directly act on the other water supply waterway, thereby realizing the use of the negative pressure generated by the inlet flow of either road. The effect of pressure extraction of additives from the liquid storage box connected to another water line.

By controlling the on and off of different water supply waterways, the effect of automatically extracting and automatically dispensing additives in different liquid storage boxes is achieved; at the same time, by turning on and off the water flow in different water supply water channels, the effect of automatically extracting and dispensing additives in any liquid storage box is achieved. Significant technological progress in automatic step-by-step extraction and dilution delivery.

At the same time, the invention has a simple structure, remarkable effects, and is suitable for promotion.

Specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.

Description of drawings

The drawings, as part of the present invention, are used to provide a further understanding of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention, but do not constitute an improper limitation of the present invention. Obviously, the accompanying drawings in the following description are only some embodiments. For those of ordinary skill in the art, without exerting any creative effort, they can also design according to these embodiments. Some drawings get other drawings.

Figure 1 is a schematic structural diagram of an automatic delivery device when extracting the first additive from the first liquid storage box in an embodiment of the present invention;

Figure 2 is a schematic structural diagram of an automatic delivery device when adding additives extracted from the first water supply waterway in an embodiment of the present invention;

Figure 3 is a schematic structural diagram of the automatic delivery device when extracting the second additive from the second liquid storage box in the embodiment of the present invention;

Figure 4 is a schematic structural diagram of the automatic delivery device when adding additives extracted from the second water supply waterway in the embodiment of the present invention;

Figure 5 is a schematic diagram of the water inlet structure of the automatic dosing device of the washing machine when no additives are added in the embodiment of the present invention.

Main component description:

1. Water supply waterway; 2. Negative pressure suction structure; 3. Water inlet valve; 4. Water inlet waterway; 5. One-way check valve; 6. Water inlet one-way valve; 7. Constant volume chamber; 8. Putting Water path; 9. Injection one-way valve; 10. Liquid storage box;

11. Connect the waterway; 12. Water inlet; 13. Water outlet; 14. Flow meter; 15. Suction port;

101. The first water supply waterway; 201. The first negative pressure suction structure; 301. The first water inlet valve; 401. The first water inlet waterway; 501. The first one-way check valve; 601. The first water inlet single One-way valve; 701, the first fixed volume chamber; 801, the first water channel; 901, the first one-way valve; 110, the first liquid storage box; 151, the first suction port;

102. The second water supply waterway; 202. The second negative pressure suction structure; 302. The second water inlet valve; 402. The second water inlet waterway; 502. The second one-way check valve; 602. The second water inlet single Directional valve; 702, second constant volume chamber; 802, second delivery waterway; 902, second delivery check valve; 120, second liquid storage box; 152, second suction port.

It should be noted that these drawings and text descriptions are not intended to limit the scope of the invention in any way, but are intended to illustrate the concept of the invention for those skilled in the art by referring to specific embodiments.

Detailed ways

In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the defect management mode in the embodiments of the present invention will be described in detail below with reference to the drawings in the embodiments of the present invention.

As shown in Figures 1 to 5, this embodiment introduces an automatic dosing device for additives, which includes at least two liquid storage boxes 10, respectively used for storing different additives; at least two water supply channels 1, two water supply The water channels 1 are respectively connected to a corresponding liquid storage box 10; each water supply water channel 1 is provided with a negative pressure suction structure 2, and the negative pressure suction structure 2 uses the water flowing through the water supply water channel to suction the negative pressure suction structure 2 Negative pressure is generated at the port 15; the suction ports 15 of the two negative pressure suction structures 2 are connected through the connecting water channel 11, and any negative pressure suction structure 2 is used to extract liquid in the liquid storage box 10 connected to the other water supply water channel 1. additive.

Through the above settings, the delivery device can use the negative pressure suction structures installed on different water supply waterways to automatically extract and The additives in the liquid storage box connected to another water supply waterway can achieve the effect of automatically extracting and placing the additives in multiple liquid storage boxes respectively; at the same time, because the negative pressure suction structures of the two water supply waterways are directly connected through the pipeline, This allows the negative pressure to directly act on another water supply waterway, thereby achieving the effect of utilizing the negative pressure generated by the incoming water flow of any waterway to extract additives from the liquid storage box connected to the other waterway.

In this embodiment, the first additive and the second additive are stored in the first liquid storage box 110 and the second liquid storage box 120 respectively. The first additive and the second additive can be used for treating different types of clothes. Additives, such as: detergent, bleach, disinfectant, etc.; at the same time, the first additive and the second additive can also be additives for the same or different types of clothing treatment, such as: super concentrated detergent and ordinary detergent, etc. wait.

In this embodiment, the first negative pressure suction structure 201 is provided on the first water supply waterway 101, and the first suction port 151 is provided on the first negative pressure suction structure 201. The water flowing through the first water supply waterway 101 is utilized. A negative pressure is formed at the first suction port 151; a second negative pressure suction structure 202 is provided on the second water supply waterway 102, and a second suction port 152 is provided on the second negative pressure suction structure 202 to utilize the flow through The water flow in the second water supply water channel 102 forms a negative pressure at the second suction port 152; the first suction port 151 and the second suction port 152 are directly connected through the connecting water channel 11.

In this embodiment, the first negative pressure suction structure 201 and the second negative pressure suction structure 202 are both venturi tubes. The inside of the venturi tube forms a channel through which the water supply flows. The channel is divided into radial dimensions along the direction of the water flow. The changed inlet, constriction section, small hole section, expanded section, and outlet, the aperture of the small hole section is smaller than the aperture of the inlet and the outlet, and the small hole section is provided with a suction port 15 that connects the channel with the outside. A negative pressure is generated in the small hole section due to the action of the water flow. The generated negative pressure acts on another water supply water channel 1 connected to the suction port 15 through the suction port 15, thereby achieving the purpose of pumping the water in the other water supply water channel 1. The purpose of entering this water supply waterway 1. The venturi tube is connected in series to the corresponding water supply waterway 1, the inlet of the venturi tube is connected to the upstream waterway, and the outlet is connected to the downstream waterway.

In this embodiment, a flow meter 14 is provided on the connecting water channel 11 for controlling the liquid flowing from the first water supply channel 101 through the connecting water channel into the second water supply channel 102 due to the negative pressure generated by the first negative pressure suction structure 201 . , the liquid that is affected by the negative pressure generated by the second negative pressure suction structure 202 and flows from the second water supply water channel 102 through the connecting water channel into the first water supply water channel 101 is measured respectively; preferably, the flow meter 14 is provided at the connecting water channel 11 The middle position ensures the accuracy of measurement in both forward and reverse directions. In this embodiment, the flow meter 14 is a bidirectional flow meter, which can measure the water flow flowing in both forward and reverse directions in the connecting water channel 11 respectively. Preferably, the flow meter 14 can only measure the water flow flowing through the connecting waterway 11 within a certain period of time, and the measurement amount can only be the total amount of water flow in both forward and reverse directions; that is, the flow meter 14 can only measure the water flow within a set time period. , the total water flow after superposition of forward and reverse directions.

In this embodiment, each water supply channel 1 is connected to a one-to-one corresponding liquid storage box 10 through a delivery water channel 8, for Automatically extract the additives in the corresponding liquid storage box 10 and put them in. In this embodiment, the first water supply channel 101 is connected to the first liquid storage box 110 through the first delivery water channel 801 , and the connection point between the first delivery water channel 801 and the first water supply channel 101 is located at the first negative pressure suction structure 201 Downstream; the second water supply waterway 102 is connected to the second liquid storage box 120 through the second delivery waterway 802, and the connection point between the second delivery waterway 802 and the second water supply waterway 102 is located downstream of the second negative pressure suction structure 202.

In this embodiment, each delivery waterway 8 is provided with a delivery one-way valve 9, which is used to control the delivery waterway 8 to only extract the additive in the corresponding liquid storage box 10 in one direction, and prevent the water flow in the second delivery waterway 802 from flowing into the third delivery waterway 802. The second liquid storage box 120 can also prevent the extracted additive from flowing back into the liquid storage box 10 . In this embodiment, the first dosing water channel 801 is provided with a first dosing one-way valve 901, which is used to control the first dosing water channel 801 to only extract the additive in the first liquid storage box 110 in one direction, preventing the first dosing water channel 801 from The water flow in flows into the first liquid storage box 110, and it can also prevent the extracted first additive from flowing back into the first liquid storage box 110; the second dispensing water channel 802 is provided with a second dispensing one-way valve 902 for controlling the second dispensing check valve 902. The second injection water channel 802 can only extract the additive in the second liquid storage box 120 in one direction, preventing the water flow in the second injection water channel 802 from flowing into the second liquid storage box 120, and also preventing the extracted second additive from flowing into the second liquid storage box 120. Reflow in box 120.

In this embodiment, each water supply water channel 1 is connected in series with a certain cavity 7 for temporarily storing the additive pumped into the water supply water channel 1 and allowing the water flow in the water supply water channel 1 to dilute the temporarily stored additive.

In this embodiment, a first fixed volume chamber 701 is provided on the first water supply waterway 101, and the first fixed volume chamber 701 is located between the first negative pressure suction structure 201 and the first discharge waterway 801; the second water supply waterway 102 is A second constant volume chamber 702 is provided, and the second constant volume chamber 702 is located between the second negative pressure suction structure 202 and the second water delivery channel 802; preferably, the first constant volume chamber 701 and the second constant volume chamber 702 can be It can be different volumes or the same volume.

In this embodiment, each water inlet of the water supply water channel 1 is provided with a water inlet valve 3, which is used to control the opening and closing of the water inlet of the water supply water channel 1 and whether water is fed into the water supply water channel 1 through the water source; the outlet of each water supply water channel 1 Water inlet check valves 6 are respectively provided to prevent the inlet water from flowing out of the delivery device and flowing into the barrel of the washing machine from flowing back into the water supply waterway 2; at the same time, the negative pressure suction structure 2 can also draw out the water supply waterway 1 When water is supplied, each water supply water channel 1 forms a closed airtight space, so that the additive in the corresponding liquid storage box 10 can be extracted into the water supply water channel 1 by utilizing the negative pressure acting on the closed space.

In this embodiment, the inlet of the first water supply waterway 101 is provided with a first water inlet valve 301 that controls the opening and closing of the waterway, and the outlet is provided with a first water inlet one-way valve 601 that ensures one-way flow of the waterway; the second water supply waterway The inlet of 102 is provided with a second water inlet valve 302 that controls the opening and closing of the water path, and the outlet is provided with a second water inlet one-way valve 602 that ensures one-way flow of the water path.

In this embodiment, each water supply water channel 1 is connected in parallel with an inlet water channel 4, so that the inlet water flow of the washing machine can flow to the water outlet 13 of the delivery device and the barrel of the washing machine through the parallel inlet water channels 4. In this embodiment, the inlet of each water supply water channel 1 is connected with the water inlet 12 of the automatic delivery device, and the outlet of each water supply water channel 1 is connected with the water outlet of the automatic delivery device. 13 are connected; the outlet of each water inlet waterway 4 is also connected with the water outlet 13 of the automatic delivery device, and the inlet of each water inlet waterway 4 is connected with the one-to-one corresponding water supply waterway 1, and the connection point is located on the water supply waterway 1 The part between the water inlet valve 3 and the negative pressure suction structure 2.

In this embodiment, the first water supply water channel 101 is connected in parallel with the first water inlet water channel 401. The water inlet end of the first water inlet water channel 401 is between the first water inlet valve 301 and the first negative pressure suction structure 201. The first water supply water channel 101 is partially connected, and the water outlet end is connected with a part of the first water supply water channel 101 downstream of the first water inlet check valve 601; the second water supply water channel 102 is connected in parallel with a second water inlet water channel 402, and the second water supply water channel 102 is connected with the second water supply water channel 102. The water inlet end of the water channel 402 is connected to the part of the second water supply water channel 102 between the second water inlet valve 302 and the second negative pressure suction structure 202, and the water outlet end is connected to the second water inlet check valve 602 downstream. The water supply waterway 102 is partially connected.

In this embodiment, each water inlet water channel 4 is provided with a one-way check valve 5, which is used to maintain that only one-way water flow from the water inlet end to the water outlet end can be generated in the water inlet water channel 4, and to avoid backflow of water in the water channel. situation occurs. In this embodiment, a first one-way check valve 501 is provided on the first water inlet waterway 401, and a second one-way check valve 502 is provided on the second water inlet waterway 402 for maintaining the first water inlet waterway 401. and the second water inlet waterway 402 can only generate one-way water flow from the water inlet end to the water outlet end to avoid the occurrence of reverse flow of water in the waterway; at the same time, the one-way check valve 5 can also close the water inlet waterway 4, This prevents the negative pressure suction structure 2 from sucking the water in the water supply channel 1 from being unable to extract water because the water inlet channel 4 is connected to the outside world.

In this embodiment, a washing machine is also introduced, which includes any one of the above-mentioned automatic additive dispensing devices. The water inlet 12 of the automatic additive dispensing device is connected to the water source through the water inlet pipeline on the washing machine. The automatic additive dispensing device The water outlet 13 is connected with the drum of the washing machine, so as to realize the automatic adding of additives into the drum of the washing machine, and the use of the incoming water flow to automatically add the additives.

In this embodiment, the control method of the washing machine is as follows:

When the first additive in the first liquid storage box 110 is placed,

As shown in Figure 1, first open the second water inlet valve 302 on the second water supply water channel 102 and disconnect the first water inlet valve 301 on the first water supply water channel 101. The inlet water supplied by the water inlet 12 of the delivery device flows through The second water supply water channel 102 flows to the water outlet 13; under the action of the water flowing through the second water supply water channel 102, the second suction port 152 of the second negative pressure suction structure 202 generates negative pressure, and the water in the first water supply water channel 101 is Water is pumped into the second water supply channel 102 through the connecting water channel 11; at the same time, after the water in the first water supply channel 101 is extracted, a negative pressure is formed in the first water supply channel 101, and the first additive in the first liquid storage box 110 automatically is extracted into the first water supply channel 101 (the first additive is extracted into the first certain volume 701 provided on the first water supply channel 101);

As shown in Figure 2, the first water inlet valve 301 on the first water supply waterway 101 is then opened, and the water inlet 12 of the delivery device supplies water. The incoming water flow flows through the first water supply water channel 101, and the water flow dilutes the first additive extracted from the first liquid storage box 110 and injects it into the washing machine through the water outlet 13 of the automatic delivery device (the water flow flows through the first water supply water channel 101. A first fixed volume chamber 701 is provided, and the first additive extracted in the first fixed volume chamber 701 is diluted and put in).

When placing the second additive in the second liquid storage box,

As shown in Figure 3, first open the first water inlet valve 301 on the first water supply water channel 101 and disconnect the second water inlet valve 302 on the second water supply water channel 102. The inlet water supplied by the water inlet 12 of the delivery device flows through The first water supply water channel 101 flows to the water outlet 13; under the action of the water flowing through the first water supply water channel 101, the first suction port 151 of the first negative pressure suction structure 201 generates negative pressure, and the water in the second water supply water channel 102 is Water is pumped into the first water supply channel 101 through the connecting water channel 11; at the same time, after the water in the second water supply channel 102 is extracted, a negative pressure is formed in the second water supply channel 102, and the second additive in the second liquid storage box 120 is extracted. to the second water supply water channel 102 (the second additive is extracted into the second fixed volume cavity 702 provided on the second water supply water channel 102);

As shown in FIG. 4 , the second water inlet valve 302 on the second water supply water channel 102 is then opened, and the water flow supplied by the water inlet 12 of the dispensing device will be pumped out from the second liquid storage box 120 The second additive is diluted and injected into the washing machine through the water outlet 13 of the automatic injection device (the water flows through the second constant volume chamber 702 provided on the second water supply waterway 102, and the second additive extracted in the second constant volume chamber 702 is dilute and dispense).

In this embodiment, when the first additive in the first liquid storage box 110 is put in (the second water inlet valve 302 on the second water supply water channel 102 is opened, and the first water inlet valve 301 on the first water supply water channel 101 is disconnected) ), the water flowing through the connecting waterway 11 and flowing from the first water supply waterway 101 into the second water supply waterway 102 is measured, and the measured amount is the amount of the first additive; the above-mentioned measured amount representing the amount of the first additive is less than or equal to The volume of the first certain cavity 701 connected in series on the first water supply water channel 101.

In this embodiment, when the additive in the second liquid storage box 120 is put in (when the first water inlet valve 301 on the first water supply water channel 101 is opened and the second water inlet valve 302 on the second water supply water channel 102 is disconnected) , the water flowing through the connecting waterway 11 and flowing from the second water supply waterway 102 into the first water supply waterway 101 is measured, and the measured amount is the amount of the second additive; the above-mentioned measured amount representing the amount of the second additive is less than or equal to the second The volume of the second constant volume chamber 702 connected in series on the water supply waterway 102.

In this embodiment, when the first additive in the first liquid storage box 110 is put in, the first water inlet valve 301 on the first water supply waterway 101 is opened, and the inlet water flow supplied by the water inlet 12 of the putting device flows through the first water supply. The water flow in waterway 101 will come from the first storage When the additive extracted from the liquid box 110 is diluted and injected into the washing machine through the water outlet 13 of the automatic injection device, the second water inlet valve 302 on the second water supply channel 102 is opened simultaneously, so that the additive in the second liquid storage box 120 will not is synchronously pumped into the second water supply waterway 102.

Similarly, when the second additive in the second liquid storage box 120 is placed, the second water inlet valve 302 on the second water supply water channel 102 is opened, and the inlet water flow supplied by the water inlet 12 of the dispensing device flows through the second water supply water channel 102 When the water flow dilutes the additive extracted from the second liquid storage box 120 and injects it into the washing machine through the water outlet 13 of the automatic injection device, the first water inlet valve 301 on the first water supply waterway 101 is opened synchronously, so that the first liquid storage box The additives in the box 110 will not be pumped into the first water supply channel 101 simultaneously.

In this embodiment, the control method of the washing machine also includes the following:

As shown in Figure 5, when the washing machine does not add additives, the first water inlet valve 301 on the first water supply water channel 101 and the second water inlet valve 302 on the second water supply water channel 102 are opened at the same time, and the water inlet 12 of the adding device supplies The inlet water flow flows to the water outlet 13 through the first water supply water channel 101 and the second water supply water channel 102 at the same time, and flows into the barrel of the washing machine. During the above process, the inlet water flow flows through both the first water supply water channel 101 and the second water supply water channel 102, so that the first suction port 151 of the first negative pressure suction structure 201 and the second negative pressure suction structure 202 The negative pressure at the second suction port 152 will not suck the water flow in the other water supply water channel 1 through the connecting water channel 11, and naturally will not extract the additives in the liquid storage box 10 into the water supply water channel 1, which is guaranteed. The automatic additive dosing device only injects water but does not add additives.

The above are only preferred embodiments of the present invention, and do not limit the present invention in any form. Although the present invention has been disclosed above in preferred embodiments, it is not intended to limit the present invention. Anyone familiar with the technology of this patent Without departing from the scope of the technical solution of the present invention, personnel can make some changes or modify the above-mentioned technical contents into equivalent embodiments with equivalent changes. In essence, any simple modifications, equivalent changes and modifications made to the above embodiments still fall within the scope of the present invention.

Claims

An automatic dosing device for additives, which includes:

At least two liquid storage boxes, respectively used for additive storage;

There are at least two water supply waterways, and the two water supply waterways are connected to different liquid storage boxes in a one-to-one correspondence;

Its characteristics are:

Each of the two water supply waterways is provided with a negative pressure suction structure, and the water flow in the corresponding water supply waterway is used to generate negative pressure at the negative pressure suction structure;

The suction ports of the two negative pressure suction structures are connected through a connecting waterway, and any negative pressure suction structure is used to extract additives from a liquid storage box connected to the other water supply waterway.
An automatic dosing device for additives according to claim 1, characterized in that:

A first negative pressure suction structure is provided on the first water supply waterway, and a first suction port is provided on the first negative pressure suction structure, and the water flow of the first water supply waterway is used to form a negative pressure at the first suction port;

A second negative pressure suction structure is provided on the second water supply waterway, and a second suction port is provided on the second negative pressure suction structure, and the water flow in the second water supply waterway is used to form a negative pressure at the second suction port;

The first suction port and the second suction port are directly connected through the connecting waterway;

Preferably, the negative pressure suction structure is a venturi tube.
An automatic dosing device for additives according to claim 2, characterized in that:

A flow meter is provided on the connecting waterway, which is used to generate a negative pressure effect on the first negative pressure suction structure and flow from the first water supply waterway into the second water supply waterway through the connecting waterway, and on the second negative pressure suction structure. Liquids flowing from the second water supply water channel through the connecting water channel into the first water supply water channel due to negative pressure are measured separately.
An automatic additive delivery device according to any one of claims 1 to 3, characterized in that:

The first water supply waterway is connected to the first liquid storage box through the first delivery waterway, and the connection point between the first delivery waterway and the first water supply waterway is located downstream of the first negative pressure suction structure;

The second water supply waterway is connected to the second liquid storage box through the second delivery waterway, and the connection point between the second delivery waterway and the second water supply waterway is located downstream of the second negative pressure suction structure;

Preferably, the first dosing waterway is provided with a first dosing one-way valve, which is used to control the first dosing waterway to only extract the additive in the first liquid storage box in one direction;

The second dosing waterway is provided with a second dosing one-way valve, which is used to control the second dosing waterway to only extract the additive in the second liquid storage box in one direction.
An automatic dosing device for additives according to claim 4, characterized in that:

A first fixed volume cavity is provided on the first water supply waterway, and the first fixed volume cavity is located between the first negative pressure suction structure and the first discharge waterway;

A second constant volume cavity is provided on the second water supply waterway, and the second constant volume cavity is located between the second negative pressure suction structure and the second delivery waterway.
An automatic additive delivery device according to any one of claims 1 to 5, characterized in that:

The inlet of the first water supply waterway is provided with a first water inlet valve that controls the opening and closing of the waterway, and the outlet is provided with a first water inlet one-way valve that ensures one-way flow of the waterway;

The inlet of the second water supply waterway is provided with a second water inlet valve that controls the opening and closing of the waterway, and the outlet is provided with a second water inlet one-way valve that ensures one-way flow of the waterway;

Preferably, the inlets of the first water supply waterway and the second water supply waterway are connected to the water inlet of the automatic delivery device, and the outlets of the first water supply waterway and the second water supply waterway are connected to the water outlet of the automatic delivery device.
An automatic dosing device for additives according to claim 6, characterized in that:

The first water supply waterway is connected in parallel with the first water inlet waterway, and the water inlet end of the first water inlet waterway is connected to the first water supply waterway portion between the first water inlet valve and the first negative pressure suction structure. Connected to the first water supply waterway portion downstream of the first water inlet check valve;

The second water supply waterway is connected in parallel with a second water inlet waterway. The inlet end of the second water inlet waterway is connected to the portion of the second water supply waterway between the second water inlet valve and the second negative pressure suction structure. Connected to the second water supply waterway portion downstream of the second water inlet check valve;

Preferably, the first water inlet waterway and the second water inlet waterway are each provided with a one-way check valve to maintain only one-way water flow from the water inlet end to the water outlet end in the water inlet waterway.
A control method for a washing machine with an automatic adding device according to any one of claims 1 to 7, characterized in that:

When adding the additive in the first liquid storage box,

First, the second water supply water channel is opened and the first water supply water channel is disconnected. Under the action of the water flow in the second water supply water channel, the second suction port of the second negative pressure suction structure generates negative pressure, and the water in the first water supply water channel is passed through. The connecting water channel is pumped into the second water supply channel, and at the same time, the additive in the first liquid storage box is pumped into the first water supply channel;

Then the first water supply waterway is opened, and the water flow in the first water supply waterway dilutes the additive extracted from the first liquid storage box through the Inject the water outlet of the automatic dispensing device into the washing machine;

and/or, when adding the additive in the second liquid storage box,

First, the first water supply water channel is opened and the second water supply water channel is disconnected. Under the action of the water flow in the first water supply water channel, the first suction port of the first negative pressure suction structure generates negative pressure, and the water in the second water supply water channel is passed through. The connecting water channel is pumped into the first water supply channel, and at the same time, the additive in the second liquid storage box is pumped into the second water supply channel;

Then the second water supply water channel is opened, and the water flow in the second water supply water channel dilutes the additive extracted from the second liquid storage box and injects it into the washing machine through the water outlet of the automatic dispensing device.
A washing machine control method according to claim 8, characterized in that:

When the additive in the first liquid storage box is placed, the water flowing through the connecting waterway and flowing from the first water supply waterway into the second water supply waterway is measured, and the measured amount is the amount of the first additive;

When adding the additive in the second liquid storage box, the water flowing through the connecting water channel and flowing from the second water supply water channel into the first water supply water channel is measured, and the measured amount is the amount of the second additive.
A washing machine control method according to claim 8, characterized in that:

When the washing machine does not add additives, the first water supply water channel and the second water supply water channel are opened at the same time, and the inlet water flows into the barrel of the washing machine through the first water supply water channel and the second water supply water channel.