WO2023124626A1

WO2023124626A1 - Laundry treatment agent dispensing control method and washing machine

Info

Publication number: WO2023124626A1
Application number: PCT/CN2022/132804
Authority: WO
Inventors: 刘�东; 李逸飞; 滕茂林; 季英亮
Original assignee: 合肥海尔滚筒洗衣机有限公司; 海尔智家股份有限公司
Priority date: 2021-12-29
Filing date: 2022-11-18
Publication date: 2023-07-06
Also published as: CN116411411A

Abstract

A laundry treatment agent dispensing control method and a washing machine. The dispensing control method comprises the following steps: S1, controlling an inner tub (510) to rotate at a first set rotation speed, such that an intra-tub load is fitted to an inner wall of the inner tub (510) under the action of a centrifugal force; and S2, adding a laundry treatment agent to a water inflow of a washing machine, mixing the laundry treatment agent and the water inflow by means of a mixing unit, and dispensing a mixed laundry treatment agent solution to a load surface fitted to the inner wall of the inner tub (510). By controlling the rotation of the inner tub (510), the intra-tub load is fitted to the inner wall of the inner tub (510), and the laundry treatment agent and the water inflow are fully mixed in the mixing unit, and are then dispensed to the load surface during the continuous rotation of the inner tub (510), as such, with the rotation of the inner tub (510), the intra-tub load continuously passes through a coverage area of the laundry treatment agent solution when being dispensed, and thus the intra-tub load is in uniform and sufficient contact with the laundry treatment agent, thereby improving the laundry effect.

Description

Method for controlling delivery of laundry treatment agent and washing machine

technical field

The invention belongs to the technical field of clothes treatment equipment, and in particular relates to a method for controlling the delivery of a clothes treatment agent and a washing machine.

Background technique

The washing machine in the prior art generally injects laundry treatment agents such as detergent and softener along with the water flow during the water intake process, and the laundry treatment agent is directly washed into the inner cylinder of the washing machine by the water flow. This feeding method is not conducive to the thorough mixing of the laundry treatment agent and the water flow, causing the laundry treatment agent to fail to fully dissolve when it is put into the inner cylinder, and quickly deposit to the bottom of the inner cylinder. Especially in the initial stage of washing, the detergent is not fully dissolved in the water, and the initial washing is only to rinse the clothes with water without the blessing of the detergent solution, resulting in poor washing effect. And after washing starts for a period of time, most of the detergent can be evenly distributed in the water with the rotation of the inner cylinder, so as to fully contact with the clothes to remove the stains on the clothes. In order to ensure the washing effect, it is necessary to extend the washing time, resulting in the extension of the overall washing time, resulting in increased energy consumption, and at the same time increased the wear and tear of the clothes.

On the other hand, because the laundry treatment agent enters the inner tub without being fully mixed with the water flow, some solutions with a higher concentration of the laundry treatment agent may be directly absorbed by the clothes in the inner tub, which is even more unfavorable for the subsequent dissolution process of the laundry treatment agent. In the process of water intake, if the amount of clothes in the inner tub is large, it may not be possible to wet all the clothes, and even some clothes are not completely soaked after a few minutes of washing, and thus cannot fully contact with the laundry treatment agent. The effect of the laundry treatment agent on the clothes in the tube is not uniform, resulting in low utilization efficiency of the laundry treatment agent, resulting in waste of the laundry treatment agent.

In view of this, the present invention is proposed.

Contents of the invention

The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art, and provide a method for controlling the delivery of laundry treatment agents and a washing machine. During the process, the inner cylinder continues to rotate, so that the load in the cylinder fits on the inner wall of the inner cylinder, so that the laundry treatment agent solution is evenly delivered to the surface of the load with the rotation of the inner cylinder, which is conducive to the uniform and full contact between the load in the cylinder and the laundry treatment agent. Improve laundry results.

In order to solve the problems of the technologies described above, the present invention adopts the basic idea of technical solution to be:

A method for controlling the delivery of a laundry treatment agent, comprising the steps of:

S1. Control the inner cylinder to rotate at the first set speed, so that the load in the cylinder is attached to the inner wall of the inner cylinder under the action of centrifugal force;

S2. Add the laundry treatment agent to the inflow water of the washing machine, mix through the mixing unit, and put the mixed laundry treatment agent solution onto the attached load surface on the inner wall of the inner cylinder.

Further, step S3 is further included after step S2: the washing machine continues to feed water, stops adding laundry treatment agent, and the inner tub keeps rotating at the first set speed.

Further, step S4 is also included after step S3: stop water intake, control the rotation speed of the inner cylinder to reduce to the second set rotation speed and continue to rotate;

Preferably, the inner cylinder rotates at a second set speed, and the load in the cylinder turns over with the rotation of the inner cylinder.

Further, step S3 is continuously executed for a first preset duration, and step S4 is executed;

Alternatively, the continuous water inflow of the washing machine during the execution of step S3 reaches the preset water inflow, and step S4 is executed.

Further, step S4 is continuously executed for a second preset duration, and then returns to step S1.

Further, step S4 continues to be executed for a second preset duration, and the washing machine judges whether the number n of executions of step S2 reaches the preset number N, and if so, ends the feeding process, otherwise returns to step S1;

Preferably, before step S1 is executed for the first time, step S0 is also included: according to the load information in the cylinder and/or the laundry program information, the total amount X of the laundry treatment agent is determined, and according to the single dose _X0 of the laundry treatment agent in step S2 and the determined The total delivery amount X is calculated as the preset number N;

More preferably, the washing machine determines the value of the single dosage _X0 according to the load information in the drum and/or the washing program information.

Further, step S4 continues to be executed for a second preset time period, and the washing machine detects the turbidity value of the water in the tub. If the detected turbidity value is less than or equal to the preset turbidity value, the feeding process ends, otherwise, return to step S1.

Further, in step S2, the mixed laundry treatment agent solution is sprayed onto the loading surface in the cylinder;

Preferably, the laundry treatment agent solution is sprayed into the cylinder from the mouth of the inner cylinder, and the sprayed laundry treatment agent solution has a coverage area on the bottom of the inner cylinder, and the coverage area extends at least from the outer circumference of the bottom of the cylinder to the bottom of the cylinder. central location.

Another object of the present invention is to provide a washing machine using the method for controlling the delivery of the above-mentioned laundry treatment agent, comprising:

Inner cylinder;

a water inlet device for performing a water inlet operation;

The dispensing device is used to add the laundry treatment agent to the incoming water flow, and perform the dispensing of the laundry treatment agent, and the dispensing device includes a mixing unit for mixing the laundry treatment agent and water.

Further, the mixing unit includes:

The mixing tank is provided with a liquid inlet and a liquid outlet, and the influent water added with the laundry treatment agent flows through the liquid inlet and enters the inside of the mixing tank for mixing;

Auxiliary mixer, set inside the mixing tank, has a certain amount of liquid acceptance;

The incoming water flowing through the liquid inlet impacts the received liquid in the auxiliary mixer. The laundry treatment agent in the liquid is mixed with water under the impact and overflows from the auxiliary mixer. The overflowing liquid passes through the mixing tank. liquid outlet discharge;

Preferably, the dispensing device further includes a spray head connected to the liquid outlet of the mixing tank, and the liquid discharged from the mixing tank is sprayed out through the spray head and sprayed onto the loading surface in the barrel.

After adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art.

In the present invention, the rotation of the inner cylinder makes the load in the cylinder adhere to the inner wall of the inner cylinder, thereby increasing the expansion area of the load. After the laundry treatment agent and the influent water are fully mixed in the mixing unit, they are injected during the rotation of the inner cylinder. The laundry treatment agent solution can only cover a local area, but the loads at different positions in the cylinder can be continuously rotated with the inner cylinder. Through the coverage area of the injected laundry treatment agent solution, the laundry treatment agent is evenly delivered to the load surface, expanding the contact area between the laundry treatment agent and the load in the cylinder, and is conducive to uniform and full contact between the load in the cylinder and the laundry treatment agent. The above feeding method avoids the problem that the laundry treatment agent is deposited on the bottom of the inner tub at the initial stage of washing, improves the utilization rate of the laundry treatment agent, and is beneficial to improving the laundry effect. At the same time, it can also shorten the laundry time while improving the cleaning ratio, which is beneficial to reduce energy consumption.

In the present invention, water is continuously fed into the inner cylinder after one injection of the laundry treatment agent, which can increase the water content of the load in the cylinder and realize the purpose of quickly wetting the clothes. Stop after entering the water for a period of time, and control the inner cylinder to continue to rotate at a lower speed before starting the next injection, so that the load in the cylinder can be turned over in the inner cylinder, which has a similar hand rubbing effect and makes the laundry treatment solution that has been injected more uniform attached to the load.

In the present invention, the laundry treatment agent solution is injected into the inner cylinder by spraying. On the one hand, the mixing effect of the laundry treatment agent and water can be further strengthened while spraying, and on the other hand, the solution formed by spraying it into the inner cylinder can also be increased. The area of the covered area is increased, thereby further increasing the contact area between the laundry treatment agent and the load in the cylinder during the feeding process, and further improving the effect of the laundry treatment agent.

In the present invention, the mixing unit for mixing the laundry treatment agent and the incoming water flow includes a mixing tank and an auxiliary mixer. The liquid in the liquid produces an impact effect, so that the laundry treatment agent in the liquid is fully mixed with water and then overflows from the auxiliary mixer, and is discharged from the mixing tank, which effectively improves the mixing degree of the laundry treatment agent and the incoming water flow, which is conducive to improving the quality of clothing. Utilization of treatment agent.

The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings.

Description of drawings

The accompanying drawings, as a part of the present invention, are used to provide a further understanding of the present invention, and the schematic embodiments of the present invention and their descriptions are used to explain the present invention, but do not constitute improper limitations to the present invention. Apparently, the drawings in the following description are only some embodiments, and those skilled in the art can obtain other drawings according to these drawings without creative efforts. In the attached picture:

Fig. 1 is the structural representation of washing machine in the embodiment of the present invention;

Fig. 2 is a schematic structural view of the delivery device in an embodiment of the present invention;

Fig. 3 is a flow chart of the injection control method of the laundry treatment agent in Embodiment 1 of the present invention;

Fig. 4 is the nozzle schematic diagram of nozzle in the embodiment of the present invention;

Fig. 5 is the schematic diagram of the mixing unit in the second embodiment of the present invention;

6 is a schematic diagram of the internal structure of the mixing unit in Embodiment 2 of the present invention;

7 is a schematic diagram of the flow of liquid in the mixing tank in Example 2 of the present invention;

Fig. 8 is a perspective structural schematic diagram of the mixing unit in the second embodiment of the present invention from a top view;

Fig. 9 is a schematic structural view of the auxiliary mixer in the second embodiment of the present invention.

In the figure: 100, mixing tank; 101, liquid inlet; 102, liquid outlet; 103, installation part; 110, upper shell; 120, lower shell; 200, auxiliary mixer; 210, receiving part; 211, Limiting part; 212, discharge hole; 220, support rod; 300, adding unit; 310, water inlet; 320, liquid outlet; 410, spray pipe; 420, nozzle; 510, inner cylinder; 511, inner cylinder shaft ; 520, outer cylinder; 531, water inlet valve; 532, water inlet pipe; 541, drive motor; 542, transmission belt.

It should be noted that these drawings and text descriptions are not intended to limit the concept scope of the present invention in any way, but illustrate the concept of the present 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 more clear, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. The following embodiments are used to illustrate the present invention , but not to limit the scope of the present invention.

In the description of the present invention, it should be noted that the orientations or positional relationships indicated by the terms "upper", "lower", "vertical", "inner" and "outer" are based on the orientations or positions shown in the drawings The relationship is only for the convenience of describing the present invention and simplifying the description, but does not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present invention.

In the description of the present invention, it should be noted that unless otherwise specified and limited, the terms "installation" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral ground connection; it can be directly connected or indirectly connected through an intermediary. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention in specific situations.

Embodiment one

This embodiment provides a laundry treatment agent injection control method and a washing machine using the injection control method. The laundry treatment agent includes but not limited to detergent, softener, disinfectant and the like.

As shown in Figure 1 and Figure 2, the washing machine of the present embodiment comprises:

Outer cylinder 520;

The inner cylinder 510 is coaxially arranged inside the outer cylinder 520;

a water inlet device for performing a water inlet operation;

Specifically, the water inlet device includes a water inlet valve 531 for controlling the water inlet of the washing machine, and a water inlet pipe 532 for delivering the water inlet flow.

The dispensing device includes an adding unit 300, a mixing unit and a spraying unit connected in sequence. Wherein, the adding unit 300 includes a water inlet 310 connected to the outlet of the water inlet pipe 532 , and also includes a liquid outlet 320 . The adding unit 300 is connected with a liquid storage chamber for storing the laundry treatment agent, and the incoming water flows through the water inlet valve 531 and the water inlet pipe 532 and enters the adding unit 300 from the water inlet 310, and the adding unit 300 adds the laundry treatment agent to the incoming water flow, and then The incoming water containing the laundry treatment agent is sent out through the liquid outlet 320 .

The mixing unit includes a mixing tank 100 , and the mixing tank 100 is provided with a liquid inlet 101 and a liquid outlet 102 . The liquid inlet 101 communicates with the liquid outlet 320 of the adding unit 300 , and the laundry treatment agent and water flowing out of the liquid outlet 320 enter the mixing tank 100 through the liquid inlet 101 to be mixed inside the mixing tank 100 . After thorough mixing, the laundry treatment agent solution is discharged through the liquid outlet 102 of the mixing tank 100 .

The spray unit includes a spray pipe 410 connected to the liquid outlet 102 of the mixing tank 100, and a spray head 420 arranged at the outlet end of the spray pipe 410. The fully mixed laundry treatment agent solution is sprayed through the spray head 420 and sprayed to the inner cylinder 510 , a larger coverage area of the laundry treatment agent can be achieved.

The washing machine in this embodiment further includes a driving motor 541 for driving the inner tub 510 to rotate. Specifically, the bottom of the inner cylinder 510 is connected to the inner cylinder shaft 511 passing through the bottom of the outer cylinder 520, the driving motor 541 is arranged below the outer cylinder 520, and the output shaft of the driving motor 541 is connected to the inner cylinder shaft 511 through a transmission belt 542 to realize Driving of the inner barrel 510.

It should be noted that the direct-drive drum washing machine can also apply the following method for controlling the delivery of laundry treatment agents.

In this embodiment, the injection control method of the laundry treatment agent is shown in Figure 3, including the following steps:

Specifically, after receiving the instruction to start the laundry program, the washing machine starts to inject the laundry treatment agent according to the above-mentioned injection control method.

In step S1 , the computer board of the washing machine starts the drive motor 541 to drive the inner cylinder 510 to continuously rotate at the first set speed. The first set rotational speed is relatively high, such as 90-100rpm, so that the load in the inner cylinder 510 can be spread nearly evenly inside the side wall of the inner cylinder 510 under the action of centrifugal force, thereby increasing the surface area of the load, which is beneficial to When the incoming water flow enters the inner cylinder 510, the load is quickly wetted.

In step S2 , the water inlet valve 531 is controlled to open, and the water inlet flows through the water inlet valve 531 and the water inlet pipe 532 to the adding unit 300 . The influent water flow passes through the adding unit 300, through which the laundry treatment agent is added to the influent water flow, and the influent water flow carries the laundry treatment agent into the mixing tank 100, and after thorough mixing, a uniformly mixed laundry treatment agent solution is obtained. The laundry treatment agent solution flows through the spray pipe 410, and is finally sprayed into the inner cylinder 510 by the nozzle 420, forming a coverage area of a certain area in the inner cylinder 510, so as to realize the effect that the laundry treatment agent solution is directly sprayed on the load surface. At the same time, the load in the cylinder continuously passes through the coverage area as the inner cylinder 510 rotates, so that the load can be evenly contacted with the laundry treatment agent solution to be wetted.

Step S1 and step S2 can be executed at the same time, that is, after the washing machine receives the instruction to start the laundry program, it controls the drive motor 541 to start, and at the same time opens the water inlet valve 531 .

In detail, as shown in FIG. 4 , the opening nozzle of the nozzle 420 is in a shape whose upper end width is greater than that of the lower end, which can increase the spraying distance of the laundry treatment agent solution sprayed through the nozzle 420, especially the spraying distance of the solution at the upper and lower ends of the nozzle 420. The difference is beneficial to increase the coverage area of the solution, make the load in the cylinder more fully contact with the laundry treatment agent, and improve the laundry effect.

In this embodiment, the spray head 420 is installed at the mouth of the inner cylinder 510, and the laundry treatment agent solution is sprayed into the cylinder from the mouth of the inner cylinder 510, forming strips nearly parallel to the axis of the inner cylinder 510 on the wall of the inner cylinder 510. shaped coverage area. The strip-shaped covering area extends from the mouth of the tube to the bottom of the tube, so that with the rotation of the inner tube 510, the load attached to the inner side of the tube wall of the inner tube 510 can directly contact with the sprayed laundry treatment agent solution.

The farthest end of the laundry treatment agent solution can be sprayed on the bottom of the inner cylinder 510, thereby forming a coverage area of a certain size on the bottom of the inner cylinder 510, ensuring that the load attached to the bottom of the inner cylinder 510 can also be covered. The laundry conditioner solution is wet.

By designing the nozzle structure of the nozzle 420 to match the size of the inner cylinder 510, the coverage area of the laundry treatment agent solution on the bottom of the inner cylinder 510 extends at least from the outer periphery of the bottom of the cylinder to the center of the bottom of the cylinder. A strip-shaped covering area extending upward from the lowest position of the bottom of the bottom to the center of the bottom of the bottom is formed on the bottom of the barrel 510 . In this way, during the rotation of the inner cylinder 510, the bottom of the entire inner cylinder 510 can pass through the coverage area of the laundry treatment agent solution, thereby ensuring that the load in the cylinder can fully contact the laundry treatment agent, and realize the uniform spraying of the laundry treatment agent solution on the load surface.

In this embodiment, the spray head 420 is installed at the mouth of the inner cylinder 510 close to the highest position, and the sprayed laundry treatment agent solution is sprayed to the loading surface in the cylinder in a parabolic shape.

It should be noted that the installation position of the nozzle can also be changed, for example, installed at any position around the nozzle, and the nozzle direction and structure of the nozzle should be adjusted accordingly. It is only necessary to ensure that the sprayed laundry treatment agent solution can cover the area from the nozzle to the bottom of the nozzle. The entire range, as well as a certain area covering the outer periphery to the center of the bottom of the cylinder, combined with the above-mentioned delivery control method, can also achieve the effect of evenly spraying the laundry treatment agent solution to the load surface.

In a further solution of this embodiment, step S3 is further included after step S2: the washing machine continues to feed water, stops adding laundry treatment agent, and the inner cylinder keeps rotating at the first set speed.

When the laundry treatment agent added in step S2 reaches a certain amount, the adding unit 300 stops adding the laundry treatment agent, and at the same time, the water inlet valve 531 remains open, and continues to pass through the water inlet pipe 532, the adding unit 300, the mixing tank 100, the spray The pipe 410 and the spray head 420 spray water to the inner cylinder 510 . On the one hand, the laundry treatment agent remaining in the mixing tank 100 can be taken out to ensure that the laundry treatment agent added in step S2 fully enters the inner cylinder 510 . On the other hand, the total amount of liquid sprayed into the inner cylinder 510 in step S2 is limited, and when the load in the cylinder is relatively large, the side of the load close to the inner wall of the inner cylinder 510 may not have been wetted, so continue to spray into the inner cylinder 510 Water can further increase the moisture content of the load so that the load in the tub is fully wetted before starting the wash/rinse cycle.

In this embodiment, step S4 is further included after step S3: stop water intake, control the rotation speed of the inner cylinder to decrease to the second set rotation speed and continue to rotate.

In step S4, the water inlet valve 531 is closed, and the driving motor 541 is controlled to reduce the output speed, so as to drive the inner cylinder 510 to continuously rotate at the second set speed. The second set speed can be 30-40rpm, the centrifugal force on the load is greatly reduced, and it no longer fits on the inner wall of the inner cylinder 510, but is lifted to a certain height with the rotation of the inner cylinder 510 and then falls, so that the load in the cylinder Turn over in the inner cylinder 510 with the rotation of the inner cylinder 510 .

In this stage, the low-speed rotation of the inner cylinder 510 drives the load in the cylinder to turn over, which has an effect similar to hand washing and rubbing, so that the load can form a stirring effect on the laundry treatment agent solution in the cylinder, and then the laundry treatment agent solution that has been put in can be more uniform. attached to the load.

An implementation manner of this embodiment is that step S3 is executed until the first preset duration is reached, and then step S4 is executed. The washing machine can automatically determine the value of the first preset duration according to the load in the drum, so as to ensure that the load in the drum can be fully wetted.

Another implementation of this embodiment is that the washing machine is provided with a flow sensor for detecting the amount of water entering the inner cylinder 510 through the water inlet pipe 532 . The continuous water inflow detected by the washing machine during the execution of step S3 reaches the preset water inflow, and step S4 is executed. The specific value of the preset water intake can be automatically determined by the washing machine according to the load in the drum, so as to ensure that the load in the drum is fully wetted.

In a further solution of this embodiment, step S4 is continuously executed for a second preset duration, and then returns to step S1.

Specifically, step S4 continues to be executed for a second preset time length, and the washing machine judges whether the execution times n of step S2 reaches the preset number N, and if so, ends the feeding process, otherwise returns to step S1.

In the above solution, the washing machine injects the laundry treatment agent into the inner cylinder 510 several times to complete the process of adding the laundry treatment agent. After adding a certain amount of laundry treatment agent each time, a certain amount of water is fed into the inner cylinder 510, and then the input laundry treatment agent solution is fully mixed with the load by reducing the rotation speed of the inner cylinder 510. Since the amount of laundry treatment agent put in each time is relatively small, it is more conducive to the uniform and full contact between the load in the drum and the laundry treatment agent compared with the way of injecting a large amount of laundry treatment agent at one time, so as to improve the laundry effect.

In the specific scheme of this embodiment, step S0 is also included before step S1 is executed for the first time: determine the total amount X of the laundry treatment agent according to the load information in the cylinder and/or the laundry program information, and according to the single injection of the laundry treatment agent in step S2 Quantity X ₀ and the total delivery amount X are calculated preset times N.

Further, the washing machine determines the value of the single dosage _X0 according to the load information in the drum and/or the washing program information.

The load information in the cylinder includes, but is not limited to, load capacity, color information, material information, degree of dirt, and the like. The load information in the tub can be determined by receiving user setting operation information, or an identification device can be installed on the washing machine to identify the load in the tub to obtain relevant information.

The laundry program information includes at least program type and/or program parameters. The laundry program information can be determined by receiving the user's setting operation on the laundry program, or can automatically generate a laundry program according to the acquired load information in the tub, and then determine the laundry program information.

In another solution of this embodiment, the washing machine does not preset the total dosage of the laundry treatment agent before starting the dosage, but detects relevant parameters during the dosage to determine whether to continue the dosage.

Specifically, step S4 continues to be executed for a second preset time period, and the washing machine detects the turbidity value of the water in the drum. If the detected turbidity value reaches the preset turbidity value, the feeding process ends, otherwise, return to step S1.

The above scheme is mainly applicable to the process of adding detergent. As the amount of detergent added to the inner tub 510 increases, the turbidity value of the water in the tub gradually decreases. When it is detected that the current turbidity value of the water in the tub has dropped to a preset turbidity value or lower, it indicates that the current total amount of detergent injected can be better adapted to the load in the tub and the degree of dirt of the load. At this point, the feeding process is over, and the washing machine continues to enter water to the set washing water level for laundry, which can obtain a washing ratio that meets the user's needs, and at the same time avoids waste caused by excessive detergent, or the washing of the load is completed due to insufficient detergent removal during the rinsing process. After that, there is a case of detergent residue.

The laundry treatment agent injection control method provided in this embodiment is applied to the washing machine, which can prevent the laundry treatment agent from sinking directly into the bottom of the inner cylinder 510, and needs to gradually dissolve and contact the load during the washing/rinsing process, thereby causing laundry treatment The problem of low utilization rate of the agent.

The laundry treatment agent is fully mixed with the incoming water and then sprayed into the inner cylinder 510. At the same time, the load in the cylinder adheres to the inner wall of the inner cylinder 510 with the high-speed rotation of the inner cylinder 510, and passes through the inner cylinder 510 at a low speed between two adjacent injections. The rotation drives the load to turn over, which is beneficial for the load in the cylinder to be quickly and fully wetted by the laundry treatment agent solution. At the same time, it can also achieve full contact and uniform mixing between the laundry treatment agent solution and the load in the cylinder, thereby increasing the cleaning ratio and improving the laundry effect. On the other hand, since the laundry treatment agent does not need to gradually dissolve during the washing/rinsing process, the overall laundry time can be shortened, thereby achieving the purpose of reducing energy consumption.

Embodiment two

As shown in Fig. 1, Fig. 2 and Fig. 5 to Fig. 9, this embodiment is a further limitation of the first embodiment above, and the mixing unit also includes an auxiliary mixer arranged inside the mixing tank 100 and having a certain liquid capacity 200.

The incoming water flow entering through the liquid inlet 101 impacts the received liquid in the auxiliary mixer 200, and the laundry treatment agent in the liquid mixes with water under the action of the impact, and overflows from the auxiliary mixer 200, and the overflowing liquid passes through The liquid outlet 102 of the mixing tank 100 is discharged. The flow path of the liquid entering and exiting the mixing tank 100 is specifically shown by the arrows in FIG. 7 . Through the above method, the incoming water flow entering the mixing tank 100 will not be directly discharged from the liquid outlet 102, avoiding that the laundry treatment agent is not fully mixed with the water and then put into the inner tub 510 of the washing machine, resulting in the load of the absorbed clothes in the tub. The case where the concentration of the treatment agent solution is not uniform.

In the specific solution of this embodiment, the auxiliary mixer 200 includes a receiving part 210 arranged below the liquid inlet 101, the upper surface of the receiving part 210 is sunken downwards to form a mixing space with an open upper side, and the outlet of the mixing tank 100 The liquid port 102 is below the opening on the upper side of the mixing space. The liquid entering the mixing tank 100 is received in the mixing space, and the laundry treatment agent and water therein are mixed under the impact of subsequent liquid entering, and overflow through the opening on the upper side of the mixing space, and pass through the liquid outlet 102 discharge.

In the above solution, the incoming water containing the laundry treatment agent flows into the mixing tank 100 through the liquid inlet 101 , and the incoming liquid hits the upper surface of the receiving portion 210 at the beginning. Since the upper surface of the receiving portion 210 is concaved to form a mixing space, the incoming liquid will not directly bypass the receiving portion 210 and flow to the liquid outlet 102 , but will be temporarily stored in the mixing space. Only when the follow-up liquid (which can be a mixed solution of laundry treatment agent and water, or the incoming water without laundry treatment agent) continues to enter the mixing tank 100, the liquid level in the mixing space rises thereupon, and the Liquid overflows from the opening on the upper side of the mixing space, flows downward, and is discharged from the mixing tank 100 through the liquid outlet 102 . When the liquid entering the mixing tank 100 falls to the liquid surface in the mixing space, it will continuously impact the existing liquid in the mixing space, so that the laundry treatment agent therein can only overflow after being fully mixed with water, ensuring that the overflow will not be pure laundry detergent or water.

By setting the auxiliary mixer 200 with a certain amount of liquid in the mixing tank 100, the auxiliary mixer 200 can receive a certain amount of mixed solution through the receiving part 210, and the subsequent liquid can impact the liquid in the receiving part 210 to achieve Thoroughly mix laundry conditioner with water for purpose. In this way, more sufficient mixing and dissolving of the laundry treatment agent can be achieved before it is discharged from the mixing tank 100, and the injection control method described in Embodiment 1 can be used to achieve a more sufficient mixture of the laundry treatment agent and the washed load at the beginning of the washing/rinsing stage. touch. Especially for the detergent put into the washing machine in the washing stage, it can effectively improve the utilization efficiency of the detergent in the initial washing period, thereby improving the washing ratio of clothes, and at the same time, it is beneficial to shorten the washing time of the washing machine and achieve the effect of reducing energy consumption.

In a preferred solution of this embodiment, the liquid inlet 101 is arranged on the top of the mixing tank 100 . This setting method can increase the vertical distance between the liquid inlet 101 and the receiving part 210 as much as possible when the shape and size of the mixing tank 100 is constant, so as to increase the impact force of the liquid on the receiving part 210, thereby achieving a more sufficient mixed effect.

The liquid outlet 102 is arranged at the bottom of the mixing tank 100 , preferably at the lowest position of the mixing tank 100 , so that the liquid overflowing from the upper side of the receiving part 210 can flow to the liquid outlet 102 more easily and be discharged from the mixing tank 100 smoothly.

In a further solution of this embodiment, the receiving portion 210 is a bowl-shaped structure whose middle part is lower than the surroundings, and the laundry treatment agent and water fall into the bowl-shaped structure through the liquid inlet 101 and overflow from the mouth of the bowl-shaped structure.

Preferably, the downward projection of the liquid inlet 101 covers the lowest position of the bowl-shaped structure, which further increases the falling distance of the liquid after it enters through the liquid inlet 101 and impacts on the receiving portion 210 , ensuring the mixing effect.

There is a certain interval between the outer periphery of the bowl opening of the bowl-shaped structure of the receiving part 210 and the inner wall of the mixing tank 100, and the liquid overflowing the bowl-shaped structure flows to the liquid outlet 102 through the interval.

Further, the mouth of the bowl-shaped structure of the receiving portion 210 is provided with a limiting portion 211 that protrudes toward the outer periphery. The limiting portion 211 is against the inner wall of the mixing tank 100. The gap through which spilled liquid passes.

By setting the limit portion 211 at the mouth of the bowl, the relative position of the receiving portion 210 in the mixing tank 100 can be limited, ensuring that there is enough space for the overflowing liquid to flow downward on the outer periphery of the bowl of the receiving portion 210, ensuring that after the mixing is completed, The overflowing liquid can smoothly flow to the bottom of the receiving portion 210 and be discharged out of the mixing tank 100 through the liquid outlet 102 .

Preferably, a plurality of limiting portions 211 are provided along the circumference of the bowl of the receiving portion 210 , and a gap is formed between two adjacent limiting portions 211 for overflowing liquid to pass through.

In the specific solution of this embodiment, four limiting parts 211 are arranged on the receiving part 210, and the four limiting parts 211 are evenly distributed along the circumference of the bowl mouth. The upper bowl mouth of the receiving portion 210 is circular, and there is a deviation angle of 90° between two adjacent limiting portions 211 . The cross section of the mixing tank 100 perpendicular to the axial direction of the liquid inlet 101 is also circular, so that the receiving part 210 can be stably limited in the center of the mixing tank 100 by the four limiting parts 211 .

In a further solution of this embodiment, the receiving portion 210 is provided with a discharge hole 212 connecting the upper and lower sides of the receiving portion 210 . The discharge hole 212 is preferably disposed at the lowest position of the receiving portion 210 .

In the above scheme, the diameter of the discharge hole 212 is much smaller than the caliber of the liquid inlet 101. When the liquid continues to enter the mixing tank 100 through the liquid inlet 101, the amount of liquid leaking out of the receiving part 210 through the discharge hole 212 is different from the receiving part. The amount of liquid overflowing from the opening of the portion 210 is negligible, so it has no obvious influence on the mixing effect of the laundry treatment agent and water. When liquid feeding into the mixing tank 100 is stopped, the liquid level in the receiving portion 210 will no longer rise, and the liquid remaining in the receiving portion 210 can be slowly discharged from the receiving portion 210 through the drain hole 212, preventing the presence of laundry treatment agent in the receiving portion 210 Problems with water residue.

In this embodiment, the auxiliary mixer 200 further includes a supporting part connected to the receiving part 210 , and the supporting part is used to support the receiving part 210 at a certain height in the mixing tank 100 . The supporting part plays a supporting role under the receiving part 210, which ensures that the auxiliary mixer 200 is stably fixed inside the mixing tank 100, and especially prevents the receiving part 210 from being impacted by the mixed solution and moving downward, or even being turned over by the impact, affecting the laundry treatment agent. Mixing effect with water.

Further, several protruding mounting parts 103 are provided on the inner wall of the mixing tank 100 , and the supporting parts include several supporting rods 220 . The upper end of the support rod 220 is connected to the receiving portion 210 , and the lower end of the support rod 220 stops against the upper surface of the installation portion 103 .

Specifically, three mounting portions 103 are uniformly arranged on the inner wall of the mixing tank 100 in this embodiment along the circumferential direction. There are three supporting rods 220 correspondingly. The upper ends of the supporting rods 220 are connected to the outer surface of the bottom area of the receiving part 210, and extend downwards towards the direction gradually approaching the inner wall of the mixing tank 100 until the lower ends are supported on the mounting part 103. Stablize.

In this embodiment, the mixing tank 100 is formed by assembling a separate upper shell 110 and a lower shell 120 , the liquid inlet 101 is set on the top of the upper shell 110 , and the liquid outlet 102 is set on the bottom of the lower shell 120 . The installation part 103 is arranged on the inner wall of the lower casing 120, and the auxiliary mixer 200 is placed inside the lower casing 120, supported above the installation part 103 by the support rod 220, and then the upper casing 110 and the lower casing 120 are fastened together to accept The limiting portion 211 on the outer periphery of the opening on the upper side of the portion 210 abuts against the inner wall of the upper housing 110 , thereby stably fixing the auxiliary mixer 200 inside the mixing tank 100 .

The mixing tank 100 is centrally symmetrical around the vertical direction, the axes of the liquid inlet 101 and the liquid outlet 102 coincide with the symmetrical axis of the mixing tank 100, and the receiving part 210 of the auxiliary mixer 200 is also centrally symmetrical around the symmetrical axis, and the receiving part The drain hole 212 on 210 is located on this axis of symmetry.

The mixing tank 100 in this embodiment is in the shape of an ellipsoid as a whole. It can be understood that if the mixing tank is set in other shapes, such as spherical, square, etc., the same effect can also be achieved by adjusting the shape of the auxiliary mixer accordingly.

In this embodiment, a mixing tank 100 for mixing the laundry treatment agent and water is provided in the laundry treatment agent dispensing device, and an auxiliary mixer 200 with a certain amount of liquid is arranged inside, and the liquid entering the mixing tank 100 is received in the auxiliary mixing tank 100. In the receiving part 210 of the device 200, the liquid in the receiving part 210 is impacted by the entry of the subsequent liquid, and then the laundry treatment agent and water are fully mixed, so that the laundry treatment agent can be fully dissolved and then put into the inner drum of the washing machine In 510, the washing effect can be further improved.

The above descriptions 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 as above with 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 use the technical content of the above prompts to make some changes or modify them 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 solutions of the present invention.

Claims

A method for controlling the delivery of a laundry treatment agent, comprising the following steps:

S1. Control the inner cylinder to rotate at the first set speed, so that the load in the cylinder is attached to the inner wall of the inner cylinder under the action of centrifugal force;

S2. Add the laundry treatment agent to the inflow water of the washing machine, mix through the mixing unit, and put the mixed laundry treatment agent solution onto the attached load surface on the inner wall of the inner cylinder.
The method for controlling the injection of laundry treatment agent according to claim 1, further comprising step S3 after step S2: the washing machine continues to feed water, stops adding laundry treatment agent, and the inner cylinder keeps rotating at the first set speed.
The method for controlling the delivery of laundry treatment agents according to claim 2, characterized in that after step S3, step S4 is further included: stop the water intake, control the rotation speed of the inner cylinder to reduce to the second set rotation speed and continue to rotate;

Preferably, the inner cylinder rotates at a second set speed, and the load in the cylinder turns over with the rotation of the inner cylinder.
The dosing control method of laundry treatment agent according to claim 3, characterized in that step S3 is continuously executed for a first preset duration, and step S4 is executed;

Alternatively, the continuous water inflow of the washing machine during the execution of step S3 reaches the preset water inflow, and step S4 is executed.
The dosing control method of laundry treatment agent according to claim 3 or 4, characterized in that step S4 is continuously executed for a second preset duration, and then returns to step S1.
The method for controlling the injection of laundry treatment agents according to claim 5, wherein step S4 is continuously executed for a second preset duration, and the washing machine judges whether the execution times n of step S2 reaches the preset number N, and if so, ends the injection process, otherwise return to step S1;

Preferably, before step S1 is executed for the first time, step S0 is also included: according to the load information in the cylinder and/or the laundry program information, the total amount X of the laundry treatment agent is determined, and according to the single dose X0 of the laundry treatment agent in step S2 and the determined The total delivery amount X is calculated as the preset number N;

More preferably, the washing machine determines the value of the single dosage X0 according to the load information in the drum and/or the washing program information.
The method for controlling the injection of laundry treatment agents according to claim 5, characterized in that step S4 is continuously executed for a second preset duration, and the washing machine detects the turbidity value of the water in the drum, and if the detected turbidity value is less than or equal to the preset If the turbidity value is higher, the feeding process ends, otherwise, return to step S1.
The method for controlling the delivery of laundry treatment agents according to any one of claims 1-7, characterized in that, in step S2, the mixed laundry treatment agent solution is sprayed onto the load surface in the cylinder;

Preferably, the laundry treatment agent solution is sprayed into the cylinder from the mouth of the inner cylinder, and the sprayed laundry treatment agent solution has a coverage area on the bottom of the inner cylinder, and the coverage area extends at least from the outer circumference of the bottom of the cylinder to the bottom of the cylinder. central location.
A washing machine, comprising:

Inner cylinder;

a water inlet device for performing a water inlet operation;

A dispensing device, used for adding a laundry treatment agent to the incoming water flow, and injecting the laundry treatment agent, the dispensing device includes a mixing unit for mixing the laundry treatment agent and water;

It is characterized in that the washing machine applies the method for controlling the dosage of laundry treatment agent according to any one of claims 1-8.
The washing machine according to claim 9, wherein the mixing unit comprises:

The mixing tank is provided with a liquid inlet and a liquid outlet, and the influent water added with the laundry treatment agent flows through the liquid inlet and enters the inside of the mixing tank for mixing;

Auxiliary mixer, set inside the mixing tank, has a certain amount of liquid acceptance;

The incoming water flowing through the liquid inlet impacts the received liquid in the auxiliary mixer. The laundry treatment agent in the liquid is mixed with water under the impact and overflows from the auxiliary mixer. The overflowing liquid passes through the mixing tank. liquid outlet discharge;

Preferably, the dispensing device further includes a spray head connected to the liquid outlet of the mixing tank, and the liquid discharged from the mixing tank is sprayed out through the spray head and sprayed onto the loading surface in the barrel.