阅读说明：本技术 洗鞋机的控制方法 (Control method of shoe washing machine ) 是由 姜鑫 孙思成 何云峰 范立超 郝亚东 于 2021-07-29 设计创作，主要内容包括：本发明涉及洗鞋技术领域,具体提供一种洗鞋机的控制方法,旨在解决现有球刷式洗鞋机洗鞋过程中可能会存在泡沫溢出导致用户使用体验差或者是腐蚀球刷式洗鞋机内部的电器件等问题。为此目的,本发明的洗鞋机包括洗涤桶,洗涤桶内设置有毛刷,靠近洗涤桶上缘的位置设置有泡沫检测装置,控制方法包括：在洗涤过程中,通过泡沫检测装置检测是否有泡沫；根据检测结果,选择性地降低水流强度。本发明通过根据靠近洗涤桶上缘的位置是否有泡沫选择性地降低水流强度,也就能够减少洗鞋过程中产生的泡沫量,从而避免洗鞋过程中产生的泡沫越过洗涤桶上缘进而溢出,提升了用户体验。(The invention relates to the technical field of shoe washing, and particularly provides a control method of a shoe washing machine, aiming at solving the problems that the use experience of a user is poor or electric devices inside the ball brush type shoe washing machine are corroded due to the overflow of foam possibly existing in the shoe washing process of the existing ball brush type shoe washing machine. For this purpose, the shoe washing machine of the invention includes the washing tub, there are brushes in the washing tub, there are foam detection devices close to the position of the upper edge of the washing tub, the control method includes: detecting whether foam exists or not through a foam detection device in the washing process; and selectively reducing the water flow intensity according to the detection result. According to the invention, the water flow intensity is selectively reduced according to whether foam exists at the position close to the upper edge of the washing barrel, so that the foam amount generated in the shoe washing process can be reduced, the foam generated in the shoe washing process is prevented from exceeding the upper edge of the washing barrel and then overflowing, and the user experience is improved.)

1. A control method of a shoe washing machine is characterized in that the shoe washing machine comprises a washing barrel, a hairbrush is arranged in the washing barrel, a foam detection device is arranged at a position close to the upper edge of the washing barrel,

the control method comprises the following steps:

detecting whether foam exists or not through the foam detection device in the washing process;

and selectively reducing the water flow intensity according to the detection result.

2. The control method according to claim 1, wherein the step of selectively reducing the water flow strength according to the detection result specifically includes:

if no foam is detected, the washing process is continued.

3. The control method according to claim 1, wherein the step of selectively reducing the water flow strength according to the detection result specifically includes:

if foam is detected, the water flow strength is reduced.

4. The control method according to claim 3, wherein the water flow intensity corresponds to a water level height in the washing tub one-to-one, and increases as the water level height increases.

5. The control method according to claim 4, wherein the water flow intensity is adjusted by a turn-stop ratio, and the "increasing with the increase of the water level" specifically includes:

the rotation time of the washing tub increases as the height of the water level increases.

6. The control method according to claim 3, wherein the shoe washing machine further comprises a drain pump for draining the washing water in the washing tub,

the control method further includes:

after the water flow strength is reduced for a first preset time, detecting whether foam exists again through the foam detection device;

and controlling the running state of the drainage pump according to the re-detected detection result.

7. The control method according to claim 6, wherein the step of controlling the operation state of the drain pump according to the re-detected detection result specifically comprises:

if foam still exists, controlling the drainage pump to be started, and controlling the water level height in the washing barrel to be reduced to the next water level height;

and if no foam exists, controlling the shoe washing machine to continuously operate at the current water flow intensity.

8. The control method as claimed in claim 7, wherein after the step of 'controlling the water level inside the washing tub to be lowered to a next water level', the control method further comprises:

and adjusting the water flow intensity to the water flow intensity corresponding to the next water level height.

9. The control method according to claim 1, wherein a balancing ring is provided on the washing tub, the balancing ring being provided at a position of the washing tub near an upper edge thereof, and the bubble detecting means being provided at the balancing ring.

10. The control method according to claim 1, wherein the bubble detecting means is a photo-electric sensing detecting means.

Technical Field

The invention relates to the technical field of shoe washing, and particularly provides a control method of a shoe washing machine.

Background

Under the current market environment, the physical life of people is gradually improved, and the shoe washing machine becomes a household appliance which is required to be equipped by every family. The shoe washing machine is a device for washing shoes by using the principle of converting electric energy into mechanical energy, and the most common washing mode of the shoe washing machine at present is to wash the shoes by combining the cleaning action of detergent and the friction washing of a brush.

In the case of a ball brush type shoe washing machine, when washing is performed at a low water level, the detergent generates a large amount of foam due to the direct contact of the ball brush and the shoes for friction. Once the water level becomes high, the foam moves upwards along with the water level, and excessive foam overflows from the outer barrel, which may cause the foam to flow out from the peripheral ground of the ball-brush type shoe washing machine, and the user experience is poor. Because the detergent usually has weak acidity or weak alkalinity, if foam overflows for a long time, serious people even can corrode electric devices in the ball brush type shoe washing machine, and further problems such as short circuit and the like occur, and potential safety hazards exist.

Accordingly, there is a need in the art for a new solution to the above problems.

Disclosure of Invention

The invention aims to solve the technical problems that the foam overflow possibly exists in the shoe washing process of the existing ball brush type shoe washing machine, so that the use experience of a user is poor or electric devices inside the ball brush type shoe washing machine are corroded, and the like.

The invention provides a control method of a shoe washing machine, wherein the shoe washing machine comprises a washing barrel, a hairbrush is arranged in the washing barrel, a foam detection device is arranged at a position close to the upper edge of the washing barrel, and the control method comprises the following steps: detecting whether foam exists or not through the foam detection device in the washing process; and selectively reducing the water flow intensity according to the detection result.

In a preferred embodiment of the above control method, the step of "selectively reducing the water flow strength according to the detection result" specifically includes: if no foam is detected, the washing process is continued.

In a preferred embodiment of the above control method, the step of "selectively reducing the water flow strength according to the detection result" specifically includes: if foam is detected, the water flow strength is reduced.

In a preferred technical solution of the above control method, the water flow strength corresponds to a water level height in the washing tub one to one, and increases as the water level height increases.

In a preferred embodiment of the above control method, the adjusting of the water flow strength by a stop-and-go ratio, the "increasing with the increase of the water level" specifically includes: the rotation time of the washing tub increases as the height of the water level increases.

In a preferred aspect of the above control method, the shoe washing machine further includes a drain pump for draining the washing water in the washing tub, and the control method further includes: after the water flow strength is reduced for a first preset time, detecting whether foam exists again through the foam detection device; and controlling the running state of the drainage pump according to the re-detected detection result.

In a preferred embodiment of the control method, the step of "controlling the operation state of the drain pump according to the re-detected detection result" includes: if foam still exists, controlling the drainage pump to be started, and controlling the water level height in the washing barrel to be reduced to the next water level height; and if no foam exists, controlling the shoe washing machine to continuously operate at the current water flow intensity.

In a preferred embodiment of the above control method, after the step of "controlling the water level in the washing tub to drop to a next water level", the control method further comprises: and adjusting the water flow intensity to the water flow intensity corresponding to the next water level height.

In a preferred technical solution of the above control method, the washing tub is provided with a balance ring, the balance ring is disposed at a position of the washing tub near an upper edge thereof, and the foam detecting device is disposed at the balance ring.

In a preferred technical solution of the above control method, the foam detecting device is a photoelectric sensing detecting device.

According to the technical scheme, the shoe washing machine comprises a washing barrel, a hairbrush is arranged in the washing barrel, and the purpose of cleaning shoes is achieved through friction between the hairbrush and the shoes. A bubble detecting means is provided at a position near the upper edge of the washing tub, by which it is possible to detect whether there is bubbles at a position near the upper edge of the washing tub. The control method of the invention comprises the following steps: in the washing process, whether foam exists is detected through a foam detection device, and the water flow strength is selectively reduced according to the detection result. Because when rivers intensity is great, the washing water is great to the friction of shoes, and the foam of production is more, and when rivers intensity is less, the washing water is also less to the friction of shoes, and the foam that produces like this also will reduce a little relatively to just also can reduce the foam volume that the shoe washing in-process produced through reducing rivers intensity. According to the invention, the water flow strength is selectively reduced according to whether foam exists at the position close to the upper edge of the washing barrel, so that the foam amount generated in the shoe washing process can be reduced, the foam generated in the shoe washing process is prevented from exceeding the upper edge of the washing barrel and then overflowing, and the user experience is improved.

Further, if no foam is detected, it indicates that the foam in the washing tub is not much and has not reached a position close to the upper edge of the washing tub, and at this time, the current washing degree is continuously performed without adjusting the water flow intensity. If it has the foam to detect, it is more to explain the foam in the washtub, has risen to the position that is close to the washtub upper edge, has crossed the risk of washtub upper edge toward excessive, then at this moment, then reduces rivers intensity, and rivers intensity reduces afterwards, and the friction of washing water to shoes reduces, and at follow-up shoe washing in-process, the foam volume of newly producing reduces, just so can avoid the foam to continue to increase and then cross the washtub upper edge and then spill over, has promoted user experience.

Further, the shoe washing machine further includes a drain pump for draining the washing water in the washing tub. The control method of the present invention further comprises: after the water flow strength is reduced for the first preset time, whether foam exists is detected again through the foam detection device, and then the running state of the drainage pump is controlled according to the detection result detected again. After the water current intensity is reduced for the first preset time, whether foam exists at a position close to the upper edge of the washing tub is detected again. Since the amount of generated bubbles is reduced after the intensity of the water current is reduced, there may be no bubbles at a position near the upper edge of the washing tub and there may still be bubbles at the time of re-detection, so that it is necessary to control the operation state of the drain pump according to the re-detection result, because the operation state of the drain pump affects the height of the water level of the washing water in the washing tub, and the bubbles are increased and decreased as the height of the water level in the washing tub is increased. That is, the higher the water level in the washing tub is, the closer the bubbles are to the upper edge of the washing tub, the lower the water level in the washing tub is, and the farther the bubbles are from the upper edge of the washing tub, for the same amount of bubbles, the distance between the bubbles and the upper edge of the washing tub can be adjusted by adjusting the water level in the washing tub. The lower the water level in the washing tub is, the better the washing tub is, and it is necessary to ensure a certain water level in the washing tub to ensure the washing effect during the washing process. Therefore, the running state of the drainage pump needs to be controlled according to the re-detected detection result, so that the washing effect is ensured, meanwhile, the phenomenon that the foam generated in the shoe washing process crosses the upper edge of the washing barrel and overflows is effectively avoided, and the user experience is improved.

Further, if the foam is detected again, after the first preset time length of reducing the water flow strength is shown, the foam amount generated in the washing process is still more, the foam in the washing barrel still has the risk of crossing the upper edge of the washing barrel and then overflowing, at the moment, the drainage pump is controlled to be opened, the water level height of the washing water in the washing barrel is reduced to the next water level height by opening the drainage pump, and then the height of the foam is reduced, so that the situation that the foam generated in the shoe washing process crosses the upper edge of the washing barrel and then overflows is avoided. If no foam is detected during the second detection, which indicates that the foam amount generated during the washing process is reduced after the water flow strength is reduced for the first preset time, the foam height in the washing tub does not reach a position close to the upper edge of the washing tub, i.e., the foam height in the washing tub is reduced. This means that the bubbles generated by the continuous shoe washing under the current water flow strength do not go over the upper edge of the washing tub, and at this time, the shoe washing machine is controlled to continue to operate at the current water flow strength.

Furthermore, after the water level in the washing barrel is controlled to be lowered to the next water level, the water flow strength is adjusted to the water flow strength corresponding to the next water level, and a better shoe washing effect can be obtained when the shoes are washed in the environment with the water level being matched with the water flow strength.

Drawings

The control method of the shoe washing machine of the present invention is described below by taking the shoe washing machine as an example and referring to the accompanying drawings, wherein:

FIG. 1 is a main flow chart of a control method of a shoe washing machine according to an embodiment of the present invention;

FIG. 2 is a flow chart of selectively reducing the water flow according to the detection result according to an embodiment of the present invention;

FIG. 3 is a flow chart of an embodiment of the present invention for re-detecting the presence of foam after decreasing the water flow strength;

fig. 4 is a flowchart of controlling the drain pump according to the re-detection result according to an embodiment of the present invention.

Detailed Description

Preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only for explaining the technical principle of the present invention, and are not intended to limit the scope of the present invention.

It is noted that the term "first" is used for descriptive purposes only and is not to be construed as indicating or implying a relative importance.

Taking a ball brush type shoe washing machine as an example, in the process of washing shoes, if too much foam exists, the foam may overflow from the upper edge of the washing barrel, and further the foam flows out from the peripheral ground of the shoe washing machine, even the short circuit of electric devices inside the shoe washing machine is caused, the user experience is affected, and potential safety hazards exist.

In this embodiment, the shoe washing machine includes a washing tub, and a brush is provided in the washing tub. When washing shoes, the shoes are put into a washing barrel, and the shoes are washed under the action of the brush and the washing water.

First, a control method of the shoe washing machine of the present invention will be explained with reference to fig. 1. Wherein, fig. 1 is a main flow chart of a control method of a shoe washing machine according to an embodiment of the present invention.

As shown in fig. 1, in one possible embodiment, the control method of the present invention includes:

step S100: detecting whether foam exists or not through a foam detection device in the washing process;

step S200: and selectively reducing the water flow intensity according to the detection result.

In this embodiment, a foam detecting device is disposed near the upper edge of the washing tub, and the foam detecting device can be used to detect whether foam exists near the upper edge of the washing tub during the washing process.

In a preferred embodiment, the washing tub of the present invention is provided with a balancing ring, by which the vibration performance of the shoe washing machine can be enhanced. The balancing ring is disposed at a position near the upper edge of the washing tub, and the bubble detecting means is disposed on the balancing ring, so that the bubble detecting means is disposed at a position near the upper edge of the washing tub.

It should be noted that the balance ring may not be disposed on the washing tub, and the bubble detecting device is directly disposed near the upper edge of the washing tub.

The bubble detecting means may be a photoelectric sensing detecting means such as a photosensor, and the photosensor is controlled by converting a change in light intensity into a change in an electric signal. Photosensors are generally divided into transmitters, receivers, and detection circuits, the transmitters directing light beams at a target, the emitted light beams typically originating from semiconductor light sources such as Light Emitting Diodes (LEDs), laser diodes, and infrared emitting diodes. The beam is emitted without interruption, or the pulse width is varied. The receiver consists of a photodiode, a photoelectric triode and a photocell. In front of the receiver, optical elements such as lenses and diaphragms are mounted. The receiver is followed by a detection circuit by means of which the useful signal can be filtered out and applied. When the photoelectric sensor is used for detecting foam, the electric signals detected by the detection circuit in two states of foam and no foam are different, the electric signals detected by the detection circuit are weaker when foam exists, the electric signals detected by the detection circuit are stronger when no foam exists, and whether foam is detected or not can be determined according to the difference of the electric signals.

Obviously, the foam detecting device may also be an infrared sensor or the like, for example, the infrared sensor includes an infrared probe and a reflector, the infrared probe emits infrared rays to the reflector, if there is foam, the infrared rays cannot be reflected back to the infrared probe by the reflector, if there is no foam, the infrared rays are reflected back to the infrared probe by the reflector, and the like. The skilled person can flexibly select the specific type of the foam detecting device according to the specific application scenario, as long as it can detect whether there is foam at a position close to the upper edge of the washing tub.

In step S100, in the washing process, whether there is foam at a position close to the upper edge of the washing tub is detected by the above-described foam detecting means provided on the balancing ring.

In step S200, the water flow intensity is selectively decreased based on the detection result of step S100. The reason is that when the water flow strength is high, the friction of the washing water on the shoes is high, the generated foam is more, when the water flow strength is low, the friction of the washing water on the shoes is low, the generated foam is relatively reduced, and therefore the foam amount generated in the shoe washing process can be reduced by reducing the water flow strength.

Through above-mentioned control mode, whether there is the foam to reduce rivers intensity according to the position that is close to the washing barrel on the reason, just also can reduce the foam volume that the shoe washing in-process produced to the foam of avoiding the shoe washing in-process to produce crosses the washing barrel on the reason and then spills over, has promoted user experience.

In order to better avoid the foam from overflowing beyond the upper edge of the washing tub, the control method of the shoe washing machine of the present invention is further explained with reference to fig. 2. Fig. 2 is a flow chart illustrating selectively reducing the water flow according to the detection result according to an embodiment of the present invention.

As shown in fig. 2, in one possible embodiment, the control method of the present invention further includes:

step S100: detecting whether foam exists or not through a foam detection device in the washing process;

step S201: if no foam is detected, continuing to execute the washing program;

step S202: if foam is detected, the water flow strength is reduced.

If the detection result in step S100 is that no foam is detected, it indicates that the foam in the washing tub is not much and has not reached the position close to the upper edge of the washing tub, and at this time, the current washing procedure is continued to complete the cleaning of the shoes without adjusting the water flow strength, that is, step S201 is performed.

If the detection result in step S100 is that there is foam detected, which indicates that there is more foam in the washing tub, and the foam has risen to a position close to the upper edge of the washing tub, such as the position of the balancing ring, there is a risk of overflow beyond the upper edge of the washing tub, at this time, the water flow strength is decreased, and step S202 is performed. After rivers intensity reduces, the friction of washing water to shoes reduces, and in the follow-up shoe washing in-process, the foam volume of newly producing reduces, just so can avoid the foam to continue to increase and then cross the washing tub and go up the reason and then spill over, has promoted user experience.

In one possible embodiment, the water flow strength corresponds to a water level height in the washing tub, and increases as the water level height increases. That is, one water level height corresponds to one water flow intensity. When the water level is raised, the water flow strength is increased. This is because the water flow intensity is controlled to be the water flow intensity corresponding to the water level height during the washing process, and the washing effect achieved by the friction of the brush on the shoes and the washing of the water flow on the shoes is the best. Of course, the water flow strength may not correspond to the height of the water level in the washing tub one-to-one, for example, a set value is reduced by controlling the rotation time each time, and the like.

In one possible embodiment, the water flow intensity may be represented by a stop-and-go ratio, i.e. one stop-and-go ratio corresponds to one water flow intensity. The spin-stop ratio refers to a ratio of a rotation time to a stop time of the washing tub. When the water flow intensity needs to be adjusted, the water flow intensity can be adjusted by adjusting the rotation-stop ratio. Specifically, for example, the rotation/stop ratio corresponding to the current water flow strength is 2.5/0.8, i.e., the ratio of the rotation time to the stop time of the washing tub is 2.5/0.8. On the basis of the above, if the water flow strength needs to be reduced, the stop-and-go ratio can be correspondingly adjusted to be 2.0/0.8, 1.5/0.8, 1.0/0.8 or other possible stop-and-go ratios. If the water flow strength needs to be increased, the stop-and-go ratio can be correspondingly adjusted to 3.0/0.8 or other possible stop-and-go ratios. Obviously, the water flow intensity may be adjusted in other manners, such as adjusting the rotation speed of the washing tub, and the like, and those skilled in the art may select a specific means for adjusting the water flow intensity according to a specific application scenario as long as the water flow intensity can be adjusted to a suitable water flow intensity.

As a specific example, the correspondence between the water level height inside the washing tub and the water current intensity is as shown in the following table 1-1. In the following table 1-1, the water flow intensity is represented by the spin-stop ratio, and the water level height in the washing tub is represented in the form of 1 st, 2 nd, 3 rd, 4 th, 5 th gears from low to high, wherein each gear corresponds to one water level height, and the higher the gear is, the higher the water level height is.

TABLE 1-1 corresponding relationship between water level and water flow intensity

Water level	Strength of water flow
		1	1.0/0.8
2	1.5/0.8
		3	2.0/0.8
4	2.5/0.8
		5	3.0/0.8

It can be seen that as the water level rises, the rotation time of the washing tub increases, the stop time does not change, thereby increasing the rotation-stop ratio and increasing the water current intensity. Through such control mode, increase the rotation time of washtub, just also strengthened the scouring force of washing water to shoes, prolonged the scouring time of washing water to shoes to can obtain better washing effect. And, only adjust the rotation time of washtub, the parameter of regulation and control is less, can adjust rivers intensity more steadily to realize the one-to-one of water level height and rivers intensity better. Obviously, the rotation-stop ratio can also be increased by controlling the rotation time to be constant and reducing the stop time, and of course, the rotation time can also be increased and the stop time can also be reduced, so that the purpose of increasing the rotation-stop ratio can also be achieved.

In order to better avoid the overflow of the foam, a proper amount of washing water can be discharged during the washing process, and the height of the foam in the washing tub is reduced by reducing the height of the water level in the washing tub. The control method of the shoe washing machine of the present invention is further explained with specific reference to fig. 3 and 4. Fig. 3 is a flowchart of re-detecting whether there is foam after decreasing the water flow strength according to an embodiment of the present invention, and fig. 4 is a flowchart of controlling the drain pump according to the re-detection result according to an embodiment of the present invention.

As shown in fig. 3, in one possible embodiment, the control method of the present invention further includes:

step S300: after the water flow strength is reduced for a first preset time, detecting whether foam exists again through the foam detection device;

step S400: and controlling the operation state of the drain pump according to the re-detected detection result.

In this embodiment, the shoe washing machine includes a drain pump for draining the washing water in the washing tub.

In step S300, after the water flow strength is decreased for the first preset time period, i.e., after the step S202 is performed for the first preset time period, the amount of generated foam is decreased. For example, when the rotation-stop ratio corresponding to the water flow intensity is reduced from 2.5/0.8 to 2.0/0.8, and the first preset time period is 5min, after the rotation-stop ratio corresponding to the water flow intensity is reduced from 2.5/0.8 to 2.0/0.8 for 5min, the position near the upper edge of the washing tub may have no foam or may still have foam due to the reduction of the amount of newly generated foam during the washing process. At this time, whether there is foam at a position close to the upper edge of the washing tub is detected again by the above-described foam detecting means provided on the balancing ring, i.e., step S300 is performed.

It should be noted that the type of the foam detecting device has been described above, and the description thereof is omitted.

In step S400, the operation state of the drain pump is controlled based on the detection result of the re-detection in step S300. This is because the operation state of the drain pump affects the height of the water level of the washing water in the washing tub, and the bubbles rise and fall as the height of the water level in the washing tub rises. That is, the higher the water level in the washing tub is, the closer the bubbles are to the upper edge of the washing tub, the lower the water level in the washing tub is, and the farther the bubbles are from the upper edge of the washing tub, for the same amount of bubbles, the distance between the bubbles and the upper edge of the washing tub can be adjusted by adjusting the water level in the washing tub. The lower the water level in the washing tub is, the better the washing tub is, and it is necessary to ensure a certain water level in the washing tub to ensure the washing effect during the washing process. Therefore, the running state of the drainage pump needs to be controlled according to the re-detected detection result, so that the washing effect is ensured, meanwhile, the phenomenon that the foam generated in the shoe washing process crosses the upper edge of the washing barrel and overflows is effectively avoided, and the user experience is improved.

As shown in fig. 4, in one possible embodiment, the control method of the present invention includes:

step S300: after the water flow strength is reduced for a first preset time, detecting whether foam exists again through the foam detection device;

step S401: if foam exists, controlling the drainage pump to be started to reduce the water level height in the washing barrel to the next water level height;

step S402: and if no foam exists, controlling the shoe washing machine to continuously operate at the current water flow intensity.

If the detection result in step S300 is that there is still foam, which indicates that after the water flow strength is decreased for the first preset time period, the amount of foam generated during the washing process is still large, the foam height in the washing tub still reaches the position of the balancing ring, and there is still a risk of continuing to increase and overflow beyond the upper edge of the washing tub, at this time, the drainage pump is controlled to be turned on, and the water level height in the washing tub is decreased to the next water level height, that is, step S401 is executed. As shown with reference to the above table 1-1, the water level in the washing tub is lowered from the level 4 to the level 3 by turning on the drain pump. Through opening the drain pump, the water level height with the wash water in the washtub reduces to next water level height, and the water level height in the washtub has reduced, and the height of foam just also has reduced naturally to the foam that also can avoid the shoe washing in-process to produce crosses the condition emergence of reason and then overflowing on the washtub.

If the result of the detection in step S300 is no bubbles, it means that the amount of bubbles generated during the washing process is reduced after the water current intensity is reduced for the first predetermined time period, and the height of bubbles in the washing tub does not reach a position near the upper edge of the washing tub, i.e., the height of bubbles in the washing tub is reduced. This means that the foam generated by continuously washing the shoes under the current water flow strength does not go over the upper edge of the washing tub, and at this time, the shoe washing machine is controlled to continuously operate at the current water flow strength, i.e., step S402 is performed. Specifically, if the rotation-stop ratio corresponding to the current water flow strength is 2.0/0.8, the shoe washing machine is controlled to continuously operate at the rotation-stop ratio of 2.0/0.8.

It should be noted that, if the result of the re-detection in step S300 is that there is still foam, the amount of newly generated foam can be reduced by continuously reducing the water flow strength, so as to achieve the purpose of reducing the height of foam in the washing tub and preventing foam from overflowing. Those skilled in the art can flexibly select a specific means for avoiding foam overflow according to a specific application scenario, as long as the foam overflow can be prevented.

In one possible embodiment, after the water level height within the washing tub is lowered to the next water level height, i.e., after step S401 is performed, in order to obtain a better washing effect, the water flow intensity is adjusted to the water flow intensity corresponding to the next water level height. Specifically, the next water level corresponds to the 3 rd water level in the above table 1-1, and at this time, the rotation/stop ratio needs to be adjusted to 2.0/0.8 corresponding to the 3 rd water level, so that the water flow intensity is adjusted to the water flow intensity corresponding to the next water level, and a better washing effect can be obtained. For another example, the next water level height corresponds to the 2 nd water level in the above table 1-1, and at this time, the rotation/stop ratio needs to be adjusted to 1.5/0.8 corresponding to the 2 nd water level.

In summary, in the preferred technical scheme of the invention, the water flow strength is selectively reduced by detecting whether foam exists at a position close to the upper edge of the washing tub, so that the amount of foam generated in the shoe washing process can be reduced, the foam generated in the shoe washing process is prevented from overflowing beyond the upper edge of the washing tub, and the user experience is improved. If no foam is detected, the current washing procedure is continued to complete the cleaning of the shoes. If foam is detected, the water flow strength is reduced in order to avoid foam overflow by reducing the amount of newly generated foam. After the water current intensity is reduced for the first preset time, whether foam exists at a position close to the upper edge of the washing tub is detected again. If no foam exists, the operation is continued according to the current water flow intensity. If foam exists, the drainage pump is started to reduce the water level height in the washing barrel to the next water level height so as to reduce the foam height in the washing barrel and prevent the foam from overflowing. And after the water level height is reduced to the next water level height, the water flow strength is adjusted to the water flow strength corresponding to the next water level height, so that a better washing effect is expected.

Although the foregoing embodiments describe the steps in the above sequential order, those skilled in the art can understand that, in order to achieve the effect of the present embodiments, the different steps need not be executed in such an order, and may be executed simultaneously (in parallel) or in an inverted order, and these simple changes are all within the scope of protection of the present application.

So far, the technical solutions of the present invention have been described in connection with the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of the present invention is obviously not limited to these specific embodiments. Equivalent changes or substitutions of related technical features can be made by those skilled in the art without departing from the principle of the invention, and the technical scheme after the changes or substitutions can fall into the protection scope of the invention.