WO2023124627A1

WO2023124627A1 - Laundry treatment agent dispensing device and washing machine

Info

Publication number: WO2023124627A1
Application number: PCT/CN2022/132806
Authority: WO
Inventors: 刘�东; 李逸飞; 季英亮; 滕茂林
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: CN116411424A

Abstract

A laundry treatment agent dispensing device and a washing machine. The dispensing device comprises: a mixing container (100) provided with a liquid inlet (101) and a liquid outlet (102) thereon, a laundry treatment agent and water entering the mixing container (100) from the liquid inlet (101) to be mixed; and an auxiliary mixer (200) provided inside the mixing container (100) and having a certain liquid receiving capacity, the liquid entering from the liquid inlet (101) impacting liquid already received in the auxiliary mixer (200), the laundry treatment agent and water in the liquid being mixed under the impact action and overflowing from the auxiliary mixer (200), and the overflowing liquid being discharged from the liquid outlet (102) of the mixing container (100). The laundry treatment agent and water enter the mixing container and are received by the auxiliary mixer (200), and the liquid subsequently entering the auxiliary mixer can continuously impact the existing liquid in the auxiliary mixer (200), so that the laundry treatment agent and water are well mixed; in addition, the well-mixed liquid overflows from the auxiliary mixer (200) and is then discharged out of the mixing container (100), thereby improving the dissolution rate of the laundry treatment agent and improving the laundry washing effect.

Description

Dispensing device for laundry treatment agent and washing machine

technical field

The invention belongs to the technical field of laundry treatment equipment, and in particular relates to a laundry treatment agent injection device 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 laundry treatment agent dispensing device and a washing machine. The device can impact the liquid received by the auxiliary mixer through the liquid entering the mixing tank, and then realize the full mixing of the laundry treatment agent and water. It is helpful to improve the washing efficiency of clothes when applied to the washing machine.

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

A device for dispensing a laundry treatment agent, comprising:

The mixing tank is provided with a liquid inlet and a liquid outlet, and the laundry treatment agent and water enter the mixing tank through the liquid inlet for mixing;

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

The liquid entering 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 outlet of the mixing tank. Mouth discharge.

Further, the auxiliary mixer includes a receiving part arranged under the liquid inlet; the upper surface of the receiving part is sunken downwards to form a mixing space with an open upper side; the liquid outlet of the mixing tank is lower than the mixing space opening on the upper side;

The liquid entering the mixing tank is received in the mixing space, and the laundry treatment agent and water are mixed under the impact of the subsequent liquid entering, and overflow through the opening on the upper side of the mixing space, and are discharged through the liquid outlet;

Preferably, the liquid inlet is arranged on the top of the mixing tank.

Further, the receiving part is a bowl-shaped structure whose middle part is lower than the periphery, and the liquid falls into the bowl-shaped structure through the liquid inlet, and overflows from the mouth of the bowl-shaped structure;

Preferably, the downward projection of the liquid inlet covers the lowest position of the bowl-shaped structure.

Further, there is a certain interval between the outer periphery of the bowl opening of the bowl-shaped structure and the inner wall of the mixing tank, and the liquid overflowing the bowl-shaped structure flows to the liquid outlet through the interval.

Further, the mouth of the bowl-shaped structure is provided with a limit portion that protrudes toward the outer periphery, and the limit portion is against the inner wall of the mixing tank, and the limit portion is formed on both sides along the circumference of the bowl mouth for overflowing liquid to pass through. interval;

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

Further, the receiving part is provided with a discharge hole connecting the upper and lower sides of the receiving part;

Preferably, the discharge hole is arranged at the lowest position of the receiving part.

Further, the auxiliary mixer also includes a support part connected to the receiving part, and the support part is used to support the receiving part at a certain height in the mixing tank;

Preferably, several protruding installation parts are provided on the inner wall of the mixing tank, the support part includes several support rods, the upper ends of the support rods are connected with the receiving part, and the lower ends of the support rods stop against the mounting parts. upper surface.

Further, it also includes an adding unit, the adding unit includes a water inlet for water intake, and a liquid outlet communicated with the liquid inlet of the mixing tank; The treatment agent and water are sent to the liquid inlet of the mixing tank through the liquid outlet.

Further, it also includes a spray head communicated with the liquid outlet of the mixing tank, and the mixed liquid in the mixing tank is sprayed out through the spray head.

Another object of the present invention is to provide a washing machine comprising the above-mentioned laundry treatment agent injection device.

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

In the present invention, an auxiliary mixer with a certain amount of liquid is installed in the mixing tank. The laundry treatment agent and water enter the mixing tank and are received by the auxiliary mixer. The subsequent liquid can impact the liquid received by the auxiliary mixer. , so that the laundry treatment agent and water in the liquid are fully mixed evenly under the action of impact, and can only be discharged from the mixing tank when they overflow from the auxiliary mixer, so as to ensure that the laundry treatment agent or water. The laundry treatment agent and water are fully mixed through the mixing tank and then poured into the washing machine, which is conducive to improving the washing effect of the washing machine, shortening the washing time and reducing energy consumption.

In the present invention, the receiving part is a bowl-shaped structure, which is used to receive the liquid entering the mixing tank, and make the fully mixed liquid overflow from the mouth of the bowl, which ensures the amount of liquid received by the receiving part and promotes the interaction between the laundry treatment agent and water. Blends better. By arranging a limiting part on the outer periphery of the bowl mouth, it is ensured that a gap for liquid to pass is reserved between the bowl mouth and the inner wall of the mixing tank. A drain hole is provided at the bottom of the receiving part to prevent liquid from remaining inside the receiving part.

In the present invention, the liquid outlet of the mixing tank is connected to the nozzle for spraying the mixed liquid. On the one hand, the mixing effect of the laundry treatment agent and water can be further improved through the spraying effect, and on the other hand, the laundry treatment agent can be put into the washing machine for treatment. Increase the coverage area of the laundry treatment agent solution, increase the contact area between the load in the cylinder and the laundry treatment agent, and further improve the laundry effect.

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 a schematic diagram of a device for dispensing laundry treatment agents in an embodiment of the present invention;

Fig. 2 is the schematic diagram of mixing unit in the embodiment of the present invention;

Fig. 3 is a schematic diagram of the internal structure of a mixing unit in an embodiment of the present invention;

Fig. 4 is a schematic diagram of the flow of liquid in a mixing tank in an embodiment of the present invention;

Fig. 5 is a perspective structural schematic diagram of a mixing unit in an embodiment of the present invention from a top view;

Fig. 6 is the structural representation of auxiliary mixer in the embodiment of the present invention;

Fig. 7 is a schematic view of the nozzle of the nozzle in the embodiment of the present invention;

Fig. 8 is a schematic structural view of a washing machine in an embodiment of the present invention;

Fig. 9 is a flow chart of the control method of the washing machine 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 delivery device and a washing machine including the delivery device. The laundry treatment agent includes but not limited to detergent, softener, disinfectant and the like.

As shown in FIGS. 1 to 7 , the dispensing device described in this embodiment 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 for water inlet, and also includes a liquid outlet 320 . The adding unit 300 is connected with a liquid storage chamber for storing the laundry treatment agent, the external water source enters the adding unit 300 from the water inlet 310, the adding unit 300 adds the laundry treatment agent to the incoming water flow, and then flows the water containing the laundry treatment agent through the liquid outlet 320 send out.

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 . The fully mixed liquid is discharged through the liquid outlet 102 of the mixing tank 100 .

The spray unit comprises 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 liquid fully mixed in the mixing tank 100 is sprayed out through the spray head 420, which can realize Larger coverage area of laundry conditioner.

As shown in Figure 8, the washing machine of this embodiment includes an inner cylinder 510 and an outer cylinder 520 coaxially arranged, and a nozzle 420 is installed at the mouth of the inner cylinder 510, and the liquid after fully mixing the laundry treatment agent and water is sprayed inside. cartridge 510. As shown in Figure 7, the nozzle of the nozzle 420 is in the shape of the width of the upper end greater than the width of the lower end, which can increase the spraying distance of the liquid sprayed from the nozzle 420, especially the difference in the distance of the liquid spraying at the upper and lower ends of the nozzle 420, which is beneficial to increase Spray the coverage area, make the load in the drum fully contact with the laundry treatment agent, and improve the laundry effect.

The washing machine also includes a water inlet valve 531. The water inlet valve 531 is connected to the adding unit 300 through a water inlet pipe 532. When the water inlet valve 531 is opened, an external water source enters the adding unit 300 through the water inlet valve 531 and the water inlet pipe 532. The adding unit 300 The laundry treatment agent is added to the water, and then enters the mixing tank 100 for thorough mixing, and is finally sprayed out from the spray head 420 through the spray pipe 410 to realize the injection of the laundry treatment agent into the inner cylinder 510 .

The water inlet of the washing machine can also pass through the water inlet valve 531 and the water inlet pipe 532 , and finally spray into the inner cylinder 510 through the spray nozzle 420 . A separate water inlet pipeline can also be provided to directly connect the water inlet valve 531 with the inner cylinder 510 or the outer cylinder 520, so as to realize the water inlet function of the washing machine.

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 feeding device described in this embodiment can also be applied in a direct-drive drum washing machine.

As shown in FIG. 2 to FIG. 6 , in a further solution of this embodiment, in order to fully mix the laundry treatment agent and water in the mixing tank 100 , an auxiliary mixer 200 with a certain amount of liquid is provided inside the mixing tank 100 . The liquid entering through the liquid inlet 101 impacts the received liquid in the auxiliary mixer 200, and the laundry treatment agent in the liquid is mixed with water under the action of the impact, and overflows from the auxiliary mixer 200, and the overflowing liquid passes through the mixing tank The liquid outlet 102 of 100 is discharged. The flow path of the liquid entering and exiting the mixing tank 100 is specifically shown by the arrows in FIG. 4 .

Specifically, the auxiliary mixer 200 includes a receiving portion 210 disposed below the liquid inlet 101, the upper surface of the receiving portion 210 is recessed downwards to form a mixing space with an open upper side, and the liquid outlet 102 of the mixing tank 100 is lower than 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 laundry treatment agent and water enter the mixing tank 100 through the liquid inlet 101 , and the incoming liquid impacts the upper surface of the receiving portion 210 at the initial stage. 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 liquid through the receiving part 210, and the subsequent liquid can impact the liquid in the receiving part 210 to achieve sufficient Purpose of mixing laundry conditioner with water. In this way, more thorough mixing and dissolving of the laundry treatment agent can be achieved before it is discharged from the mixing tank 100 , and thus a more thorough contact of the laundry treatment agent with the load to be washed can be achieved at the beginning of the washing/rinsing stage. 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 part 210 is a bowl-shaped structure whose middle part is lower than the periphery, and the liquid falls into the bowl-shaped structure through the liquid inlet 101 and overflows 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 distance between the outer periphery of the bowl mouth of the receiving part 210 and the inner wall of the mixing tank 100 , and the liquid overflowing the bowl structure flows to the liquid outlet 102 through the space.

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 will be impacted by the entry of the subsequent liquid, so as to fully mix the laundry treatment agent and water. The dispensing device also includes a spray unit provided with a spray head 420. The fully mixed laundry treatment agent solution is sprayed out from the spray head 420. On the one hand, the solution can be subjected to pressure when the solution is sprayed to further improve the mixing uniformity; When the solution of the laundry treatment agent falls into the inner tub 510 of the washing machine, the coverage area is large, so that the laundry treatment agent can fully contact the load in the tub, which is conducive to improving the washing effect.

Embodiment two

This embodiment provides a control method for the washing machine described in Embodiment 1 above, which is used in the process of adding the laundry treatment agent.

As shown in Figure 9, the control method includes 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.

Specifically, as shown in Fig. 1 and Fig. 8, after the washing machine receives the instruction to start the laundry program, it starts to inject the laundry treatment agent according to the above control method.

In step S1, the computer board of the washing machine controls and 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 .

The nozzle 420 has a spout as shown in FIG. 7 and is installed at the mouth of the inner cylinder 510. The laundry treatment agent solution is sprayed into the cylinder from the mouth of the inner cylinder 510, forming a pattern on the wall of the inner cylinder 510 that is nearly parallel to the inner cylinder. The strip-shaped coverage area of the axis of the barrel 510. The strip-shaped covering area extends from the mouth of the cylinder to the bottom of the cylinder, so that with the rotation of the inner cylinder 510, the load attached to the inner wall of the inner cylinder 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.

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. Due to the relatively small dose of laundry treatment each time, it is more conducive to the uniform and full contact between the load in the cylinder and the laundry treatment agent compared with the way of injecting a large amount of laundry treatment agent at one time, thereby further improving 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 may be determined by receiving the user's setting operation on the laundry program, or the laundry program may be automatically generated according to the acquired load information in the tub, and then the laundry program information may be determined.

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 control method of the washing machine in this embodiment is used in the feeding process of the laundry treatment agent, so that the laundry treatment agent solution mixed evenly with water can be evenly sprayed on the surface of the load in the cylinder, so that the laundry treatment agent and the load in the cylinder can be more evenly contacted , thereby further improving the laundry effect.

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 device for dispensing a laundry treatment agent, characterized in that it comprises:

The mixing tank is provided with a liquid inlet and a liquid outlet, and the laundry treatment agent and water enter the mixing tank through the liquid inlet for mixing;

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

The liquid entering 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 outlet of the mixing tank. Mouth discharge.
The device for dispensing laundry treatment agents according to claim 1, wherein the auxiliary mixer includes a receiving part arranged below the liquid inlet; The mixing space of the mouth; the liquid outlet of the mixing tank is lower than the opening on the upper side of the mixing space;

The liquid entering the mixing tank is received in the mixing space, and the laundry treatment agent and water are mixed under the impact of the subsequent liquid entering, and overflow through the opening on the upper side of the mixing space, and are discharged through the liquid outlet;

Preferably, the liquid inlet is arranged on the top of the mixing tank.
The device for dispensing laundry treatment agent according to claim 2, characterized in that, the receiving part is a bowl-shaped structure whose middle part is lower than the surrounding, and the liquid falls into the bowl-shaped structure through the liquid inlet, and from the bowl-shaped structure overflowing from the mouth of the bowl;

Preferably, the downward projection of the liquid inlet covers the lowest position of the bowl-shaped structure.
The device for dispensing laundry treatment agents according to claim 3, wherein there is a certain interval between the outer periphery of the bowl mouth of the bowl-shaped structure and the inner wall of the mixing tank, and the liquid overflowing the bowl-shaped structure flows to the liquid outlet through the interval. flow.
The device for dispensing laundry treatment agents according to claim 4, characterized in that, the mouth of the bowl-shaped structure is provided with a limiting portion that protrudes toward the outer periphery, and the limiting portion is against the inner wall of the mixing tank to limit the The two sides along the circumference of the mouth of the bowl form a gap for the overflow liquid to pass through;

Preferably, a plurality of limiting portions are provided along the circumference of the mouth of the bowl, and a gap is formed between two adjacent limiting portions for overflowing liquid to pass through.
According to any one of claims 3-5, the laundry treatment agent dispensing device is characterized in that, the receiving part is provided with a discharge hole communicating with the upper and lower sides of the receiving part;

Preferably, the discharge hole is arranged at the lowest position of the receiving part.
The laundry treatment agent injection device according to any one of claims 2-6, wherein the auxiliary mixer further comprises a support part connected to the receiving part, and the support part is used to support the receiving part A certain height in the mixing tank;

Preferably, several protruding mounting parts are provided on the inner wall of the mixing tank, the supporting part includes several supporting rods, the upper ends of the supporting rods are connected to the receiving parts, and the lower ends of the supporting rods stop against the mounting parts. upper surface.
The laundry treatment agent delivery device according to any one of claims 1-7, further comprising an adding unit, the adding unit includes a water inlet for water intake, and a liquid inlet with a mixing tank A connected liquid outlet; the adding unit is used to add laundry treatment agent to the water, and send the laundry treatment agent and water to the liquid inlet of the mixing tank through the liquid outlet.
The injection device for laundry treatment agent according to any one of claims 1-8, further comprising a spray head connected to the liquid outlet of the mixing tank, and the mixed liquid in the mixing tank is sprayed through the spray head. out.
A washing machine, characterized by comprising the laundry treatment agent injection device according to any one of claims 1-9.