Laundry treating apparatus and drainage control method thereof

Abstract

The present application belongs to the technical field of household appliances, and specifically discloses a clothes treatment device and a drainage control method thereof. The method comprises the following steps: in a clothes treatment process, different drainage modes are selected according to different clothes treatment stages to inhibit the generation of foam in the drainage process; and the clothes treatment device comprises a drainage control method for implementing the clothes treatment device as described above. In the clothes treatment process, different drainage modes are adopted according to different clothes treatment stages, so that the risk of foam overflow caused by the generation of foam by a high-speed rotating drum can be avoided while the bottom of a washing drum is not affected. The clothes treatment device provided by the present application can inhibit the generation of foam from the source without increasing any defoaming and anti-overflow device, and foam can be eliminated after being generated, so that the defoaming method is more simple and efficient, and the cost is low.

Description

Technical Field

[0001] This invention belongs to the field of household appliance technology, specifically, it relates to a clothing processing device and its drainage control method. Background Technology

[0002] In existing technology, the bottom of the drum of a top-loading washing machine is prone to getting dirty. Cleaning particles are placed between the inner and outer drums to clean the bottom of the drum. During the drainage process, when a small amount of water remains in the drum, a high-speed drum rotation is used to effectively prevent dirt from getting on the bottom wall of the inner drum. However, when the user adds a lot of detergent or uses a high-foaming detergent, a large amount of foam will be generated between the inner and outer drums when the drum is rotated at high speed. This causes the foam to overflow or overflow during the next rinse, resulting in a poor user experience.

[0003] Chinese Patent Application No. CN201611116650.8 discloses a method for detecting and eliminating foam in a washing machine. The method detects water level pressure information during the washing machine's spin-drying process and executes an elimination procedure based on this information. The elimination procedure includes controlling the opening / closing of the spray valve, and / or the opening / closing of the drain pump, and / or the drum rotation speed. The method includes the following steps: S1, during the spin-drying process, the drum rotates at a first set speed; S2, detecting the water level pressure information inside the washing machine drum, determining whether the water level pressure information has reached a preset value, and if so, controlling the drum to rotate at a second set speed and starting the spray valve and drain pump, then executing step S1; if not, executing step S3; S3, controlling the drum to rotate at a third set speed.

[0004] The aforementioned patent executes a foam elimination program based on water level and pressure information. However, this foam elimination program is only performed during the spin-drying process of the washing machine, combined with the spray valve and the relatively low drum speed during spin-drying to eliminate foam. Since foam elimination only occurs during spin-drying, there are drawbacks. If there is a lot of foam, one elimination program may not be enough to remove it completely. When the spin-drying time is short and the water volume in the drum is limited, setting multiple elimination steps becomes redundant when the foam reaches saturation. The dilution effect of the spray water is minimal, merely physically eliminating the foam. When the detergent concentration is high, even at speeds lower than the spin-drying speed, the high-speed drum rotation still increases foam, hindering its elimination. In practical applications, this patented method is ineffective, with unsatisfactory defoaming, and also makes the program complex and inconvenient to operate.

[0005] In view of this, the present invention is hereby proposed. Summary of the Invention

[0006] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide a drainage control method for clothing processing equipment. The present invention aims to solve the problem that in the prior art, clothing processing equipment is prone to generating foam during high-speed rotation of the drum during the dehydration process, which leads to foam overflow and affects the user experience.

[0007] To address the aforementioned technical problems, the first aspect of this application discloses a drainage control method for a garment processing device, comprising selecting different drainage modes according to different stages of garment processing during the garment processing process to suppress the generation of foam during drainage.

[0008] Through the above design, the garment processing equipment of the present invention uses a high-speed rotating drum to clean the bottom of the inner drum during the dehydration process. In order to avoid the generation of foam, which would cause foam overflow and affect the user experience, the present invention adopts different drainage methods according to different garment processing stages. This not only does not affect the high-speed rotating drum cleaning the bottom of the drum, but also avoids the generation of foam by the high-speed rotating drum, which would cause foam overflow. The present invention inhibits foam generation at the source, rather than eliminating foam after it is generated. The defoaming method is simpler and more efficient.

[0009] Furthermore, the garment processing stage includes a washing stage, a rinsing stage, and a final dehydration stage;

[0010] The garment processing equipment is controlled to drain water in different modes during the washing, rinsing, and final spin-drying stages to suppress the generation of foam during the drainage process.

[0011] Through the above design, the present invention can select different drainage modes in the washing stage, rinsing stage and final dehydration stage, make full use of the drainage process in each stage, clean the bottom of the drum while preventing foam generation at high speed and the risk of overflow.

[0012] Furthermore, different drainage modes are selected based on the different stages of garment processing, including:

[0013] Determine whether the drainage is during the washing stage. If it is, select the normal drainage mode; if it is not during the washing stage, select the agitation drainage mode.

[0014] Preferably, the non-washing stage drainage includes rinsing stage drainage and final dehydration stage drainage, and the rinsing stage drainage and / or final dehydration stage drainage is selected as the agitation drainage mode.

[0015] Preferably, the rinsing stage drainage includes a first rinsing step drainage and a second rinsing step drainage, wherein the first rinsing step drainage selects a normal drainage mode and the second rinsing step drainage selects an agitation drainage mode.

[0016] Through the above design, the washing stage drainage of the present invention adopts the normal drainage mode. Generally, a lot of foam is generated in the washing stage. By adopting the normal drainage mode, the risk of foam overflow caused by agitation drainage is avoided. In the rinsing stage, especially in the second rinse, the agitation drainage mode is used. Generally, the amount of foam in the second rinse is less. At this time, agitation drainage will not increase the foam and cause foam overflow. It can also achieve the purpose of cleaning the bottom of the drum.

[0017] Furthermore, it also includes the following steps:

[0018] Before draining, foam testing is performed on the garment processing equipment, and the drainage mode is selectively adjusted based on the test results.

[0019] Through the above design, in order to more accurately select the drainage mode, the present invention performs foam detection before drainage, and adjusts the drainage mode according to the amount of foam detected, thereby improving the effect of cleaning the bottom of the drum and suppressing foam generation.

[0020] Furthermore, the selective adjustment of the drainage mode based on the detection results includes:

[0021] If the amount of foam detected in the clothing processing device reaches or exceeds the preset threshold, select the normal drainage mode;

[0022] If the amount of foam detected in the clothing processing equipment is less than the preset threshold, the agitation drainage mode is selected.

[0023] With the above design, if the amount of foam reaches or exceeds the preset threshold, it means that there is too much foam. If the agitation drainage mode is used, it will increase the amount of foam and there is a risk of foam overflow. Therefore, at this time, the normal drainage mode is selected to effectively suppress foam generation and prevent foam overflow. Conversely, when the foam is within a controllable range, the agitation drainage mode is selected. While cleaning the bottom of the drum, it will not increase the amount of foam. In fact, the agitation drainage mode is conducive to the mixing of foam and water.

[0024] Furthermore, before draining the water during the washing stage, foam testing is performed on the garment processing equipment:

[0025] If the amount of foam detected in the clothing processing equipment is less than the preset threshold, the turbulent drainage mode will be selected during the washing stage.

[0026] If the amount of foam detected in the garment processing equipment reaches or exceeds the preset threshold, the normal drainage mode will be selected during the washing stage.

[0027] By adding a foam detection step during the washing stage, the accuracy of the drainage mode during the washing stage can be improved, and the bottom cleaning or anti-overflow foaming effect can be enhanced.

[0028] Furthermore, if the amount of foam in the clothing processing equipment is detected to be less than a preset threshold, the system will simultaneously select the agitation drainage mode during the washing stage and the rinsing stage.

[0029] If the amount of foam in the garment processing equipment is detected to reach or exceed the preset threshold, while controlling the drainage during the washing stage to select the normal drainage mode, the drainage during the rinsing stage will be controlled to select the agitation drainage mode, and the duration and / or frequency of the agitation drainage mode will be increased.

[0030] Preferably, the duration of the agitation drainage mode is 30 seconds to 2 minutes, and the number of agitation drainage modes is 1 to 3 times.

[0031] With the above design, if the amount of foam in the garment processing equipment reaches or exceeds the preset threshold before the washing stage drainage, the washing stage drainage is in normal drainage mode, and a large amount of foam is discharged from the garment processing equipment. By increasing the duration and / or number of the turbulent drainage mode in the rinsing stage, the residual foam can be fully mixed with the water to play a defoaming role, and the cleaning degree of the bottom of the drum can be improved.

[0032] Furthermore, the turbulent drainage mode involves controlling the inner drum to rotate at a high speed greater than the washing speed when the water level reaches a preset level.

[0033] Preferably, the inner cylinder rotation speed in the turbulent drainage mode is 40-200 rpm.

[0034] The above design achieves two goals: first, it accelerates the fusion of foam and water; second, it cleans the bottom of the drum. When the foam content is low, the agitation drainage mode does not increase the amount of foam, but rather helps the foam to fuse with water, inhibits foam generation, and achieves the purpose of defoaming.

[0035] Furthermore, the common drainage mode is that the inner cylinder is stationary or rotates at a low speed;

[0036] Preferably, the low speed is 0-100 rpm.

[0037] With the above design, normal drainage will not agitate the detergent water significantly and will not produce foam; when the inner drum is rotated at low speed, the bottom of the inner drum can still be cleaned.

[0038] A second aspect of this application also provides a garment processing device for implementing the drainage control method of a garment processing device as described above.

[0039] Through the above design, the present invention provides a garment processing device that realizes a drainage control method to prevent overflow foaming. The garment processing device has a simple structure, does not require the addition of defoaming or anti-overflow foaming devices, and has low cost. It only needs to adjust the drainage mode of the inner drum to clean the bottom of the inner drum during high-speed rotation and prevent the generation of foam. The defoaming method is simpler and more efficient.

[0040] By adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art.

[0041] 1. This invention selects different drainage modes for different clothing processing stages. Compared with existing technologies, it can both use high-speed rotating drum to clean the bottom of the drum and prevent the generation of foam, thus avoiding foam overflow and improving the user experience.

[0042] 2. This invention improves the accuracy of drainage mode selection through foam detection, thereby enhancing the anti-overflow foaming and cleaning effect on the bottom of the drum.

[0043] 3. For the drainage during the washing stage, the present invention adopts the ordinary drainage mode, or foam detection can be added. If the foam content during the washing stage is less than the preset threshold, agitation drainage can be used, which will not increase the amount of foam, but can also clean the bottom of the drum. The cleanliness of the drum bottom is improved by cleaning the bottom of the drum multiple times. This method is simple to operate and easy to implement.

[0044] The specific embodiments of the present invention will now be described in further detail with reference to the accompanying drawings. Attached Figure Description

[0045] The accompanying drawings, as part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments and descriptions of the invention are used to explain the invention, but do not constitute an undue limitation of the invention. Obviously, the drawings described below are merely some embodiments, and those skilled in the art can obtain other drawings based on these drawings without creative effort. In the drawings:

[0046] Figure 1 This is a schematic diagram of the drainage control method for a garment processing device according to the present invention;

[0047] Figure 2 yes Figure 1 A schematic diagram of a drainage control method using foam detection;

[0048] Figure 3 This is a schematic diagram of the drainage control method during the washing stage of the present invention;

[0049] Figure 4 yes Figure 3 A schematic diagram of the drainage control method using foam detection during the washing stage;

[0050] Figure 5 This is a schematic diagram of the structure of a garment processing device according to the present invention.

[0051] In the diagram: 1. Outer cylinder; 2. Inner cylinder; 3. Cleaning particles; 4. Turbidity sensor; 5. Drain valve.

[0052] It should be noted that these accompanying drawings and textual descriptions are not intended to limit the scope of the invention in any way, but rather to illustrate the concept of the invention to those skilled in the art by referring to specific embodiments. Detailed Implementation

[0053] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0054] In the description of this invention, it should be noted that the terms "upper", "lower", "left", "right", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0055] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0056] The present invention will be further described in detail below with reference to the embodiments.

[0057] like Figures 1 to 4 As shown, the present invention proposes a drainage control method for a garment processing device, which includes selecting different drainage modes according to different stages of garment processing during the garment processing process in order to suppress the generation of foam during the drainage process.

[0058] This invention, based on existing technology, places cleaning particles 3 between the inner and outer drums. During drainage, when using a high-speed rotating drum to clean the bottom wall of the inner drum 2, excessive detergent or high-foaming detergent can easily generate a large amount of foam, posing a risk of foam overflow or overflow during the next rinse. Therefore, this invention selects different drainage modes for different stages of garment processing, achieving both cleaning of the drum bottom and preventing foam overflow caused by excessive foam generated by high-speed rotation. Figure 1 As shown. This invention effectively avoids the problem of excessive foam generation caused by high-speed rotating drum. By adjusting the drainage mode, foam generation is effectively suppressed without adding other anti-overflow foaming devices, thus achieving the purpose of preventing overflow foaming. The defoaming method is simple, efficient, and low in cost.

[0059] Furthermore, the garment processing stage includes a washing stage, a rinsing stage, and a final dehydration stage;

[0060] The garment processing equipment is controlled to drain water in different modes during the washing, rinsing, and final spin-drying stages to suppress the generation of foam during the drainage process.

[0061] Conventional garment processing equipment has multiple garment processing stages, and the garment processing stages involving water intake will all have drainage. This invention achieves the dual purpose of cleaning the bottom of the drum at high speed and preventing foam from being generated due to the high speed rotation of the inner drum 2 by controlling the drainage mode of the drainage stage.

[0062] Furthermore, such as Figure 3 As shown, different drainage modes can be selected depending on the stage of garment processing, including:

[0063] Determine whether the drainage is during the washing stage. If it is, select the normal drainage mode; if it is not during the washing stage, select the agitation drainage mode.

[0064] Preferably, the non-washing stage drainage includes rinsing stage drainage and final dehydration stage drainage, and the rinsing stage drainage and / or final dehydration stage drainage is selected as the agitation drainage mode.

[0065] Preferably, the rinsing stage drainage includes a first rinsing step drainage and a second rinsing step drainage, wherein the first rinsing step drainage selects a normal drainage mode and the second rinsing step drainage selects an agitation drainage mode.

[0066] This invention adjusts the drainage mode during the washing stage to suppress foam generation. Since a large amount of foam is typically generated during the washing stage, the normal drainage mode can be selected directly. This mode avoids high-speed drum rotation, effectively suppressing foam and preventing overflow. Most garment processing equipment also includes a rinsing stage and a final spin-drying stage. Generally, during the rinsing stage, most of the high-concentration wash water has already been drained. The residual detergent is diluted by the water flow, significantly reducing its concentration and making foam generation less likely. In the second rinsing step, the remaining detergent on the clothes is further diluted, further reducing the possibility of foam generation. The agitated drainage mode can accelerate the fusion of foam and water, achieving defoaming, and also, combined with the cleaning particles, clean the bottom of the drum. These two processes do not interfere with each other. For situations with excessive foam, the normal drainage mode should be selected during the rinsing stage, and the agitated drainage mode should be selected during the final spin-drying stage to avoid foam generation during the rinsing stage.

[0067] Furthermore, such as Figure 2 As shown, it also includes the following steps:

[0068] Before draining, foam testing is performed on the garment processing equipment, and the drainage mode is selectively adjusted based on the test results.

[0069] This invention performs foam detection on the garment processing equipment before drainage. This foam detection is not limited to the washing stage; it can also be performed before drainage in the rinsing stage and the final spin-drying stage. Based on the foam detection results, the drainage mode can be selected, allowing for more flexible use of different drainage modes at different stages of garment processing, thereby improving the effectiveness of preventing overflow and cleaning the bottom of the drum.

[0070] Furthermore, the selective adjustment of the drainage mode based on the detection results includes:

[0071] If the amount of foam detected in the clothing processing device reaches or exceeds the preset threshold, select the normal drainage mode;

[0072] If the amount of foam detected in the clothing processing equipment is less than the preset threshold, the agitation drainage mode is selected.

[0073] In this invention, if the detected amount of foam reaches or exceeds the preset threshold, it indicates that there is a lot of foam. In order to avoid increasing the amount of foam, the normal drainage mode is adopted. If the detected amount of foam is less than the preset threshold, it indicates that there is a little foam. At this time, the agitation drainage mode will not increase the amount of foam and can also achieve the purpose of cleaning the bottom of the drum. At this time, the agitation drainage will also accelerate the fusion of foam and water, achieving the defoaming effect.

[0074] Furthermore, such as Figure 4As shown, foam testing is performed on the garment processing equipment before draining during the washing stage:

[0075] If the amount of foam detected in the clothing processing equipment is less than the preset threshold, the turbulent drainage mode will be selected during the washing stage.

[0076] If the amount of foam detected in the garment processing equipment reaches or exceeds the preset threshold, the normal drainage mode will be selected during the washing stage.

[0077] This invention adds a foam detection step before draining during the washing stage, which can more accurately select the drainage mode and avoid situations where there are few clothes, little detergent, or detergent that does not easily produce foam during the washing stage. In such cases, the water can be drained during the washing stage using an agitation drainage mode to clean the bottom of the drum.

[0078] Similarly, before draining during the rinsing stage, either before the first rinsing step and / or the second rinsing step, foam detection is performed on the garment processing equipment. If the amount of foam in the garment processing equipment is less than a preset threshold, the rinsing stage drainage is controlled to be adjusted to the agitation drainage mode.

[0079] If the amount of foam detected in the garment processing equipment reaches or exceeds the preset threshold, the rinsing stage drainage will be controlled to normal drainage mode.

[0080] By following the steps above, if a large amount of detergent remains in the rinsing stage, and if foam testing is not performed during the rinsing stage, the use of an agitation drainage mode will increase foam and increase the risk of foam overflow. Therefore, adjusting the drainage mode by adjusting the foam content can effectively suppress foam generation and achieve the purpose of preventing foam overflow.

[0081] Before the final dehydration stage drainage, foam detection can also be performed. The detection results are as described above. Before the final dehydration stage drainage, foam detection is performed on the clothing processing equipment. If the amount of foam detected in the clothing processing equipment is less than the preset threshold, the final dehydration stage drainage is controlled to be adjusted to the agitation drainage mode.

[0082] If the amount of foam detected inside the garment processing equipment reaches or exceeds a preset threshold, the drainage during the final dehydration stage will be controlled to normal drainage mode. Generally, by the final dehydration stage, the foam content is relatively low, and agitation drainage mode can be used.

[0083] Furthermore, if the amount of foam in the clothing processing equipment is detected to be less than a preset threshold, the system will simultaneously select the agitation drainage mode during the washing stage and the rinsing stage.

[0084] If the amount of foam in the garment processing equipment is detected to reach or exceed the preset threshold, while controlling the drainage during the washing stage to select the normal drainage mode, the drainage during the rinsing stage will be controlled to select the agitation drainage mode, and the duration and / or frequency of the agitation drainage mode will be increased.

[0085] Preferably, the duration of the added turbulent drainage mode is 30 seconds to 2 minutes, and the number of times the added turbulent drainage mode is 1 to 3 times.

[0086] In this invention, if the amount of foam in the garment processing equipment is less than a preset threshold, the agitation drainage mode can be selected for both the washing and rinsing stages. Since the amount of foam is small, agitation drainage will not generate new foam and can also achieve the purpose of cleaning the bottom of the drum.

[0087] If the amount of foam in the garment processing equipment reaches or exceeds the preset threshold, the washing stage uses the normal drainage mode to discharge a large amount of washing water, leaving limited residual foam. Moreover, the concentration of residual detergent is further reduced after being diluted by the water flow during the rinsing stage. Therefore, the residual foam can be accelerated to mix with the water by increasing the duration and / or number of turbulence drainage during the rinsing stage. At this point, the residual detergent is insufficient to generate new foam, thus achieving the defoaming effect. It can also clean the bottom of the drum. Increasing the rinsing stage duration can be achieved by reducing the rotation speed or increasing the turbulence drainage duration while keeping the rotation speed constant.

[0088] Furthermore, the turbulent drainage mode involves controlling the inner drum to rotate at a high speed greater than the washing speed when the water level reaches a preset level; at this time, the rotation speed of the inner drum 2 is lower than the speed during spin-drying.

[0089] Preferably, the inner cylinder rotation speed in the turbulent drainage mode is 40-200 rpm.

[0090] When using the agitation drainage mode, the foam content of the garment processing equipment is not high. Agitation drainage accelerates the fusion of foam and water, preventing the generation of new foam and achieving defoaming; it also cleans the bottom of the drum. In agitation drainage mode, the rotation speed of the inner drum 2 is generally higher than the washing speed but lower than the spin-drying speed. The preset water level mentioned in this invention refers to the water level L2 of the garment processing equipment. At this level, a lower water level allows for a higher rotation speed of the inner drum 2, which is more conducive to cleaning the bottom of the inner drum 2. Those skilled in the art can adjust the water level setting and the rotation speed of the inner drum 2 according to actual needs, and these will not be elaborated upon here. Figure 5 As shown, water level L1 > water level L2 > water level L3. Water level L3 indicates that the inner tube 2 is almost empty, nearly empty. Water level L1 represents the water level after water has entered during the general clothing processing stage.

[0091] Specifically, the turbulent drainage mode process includes the following steps:

[0092] S1. Start draining by opening the drain valve;

[0093] S2. Determine if the water level has reached the preset water level. If it has not reached the preset water level, continue draining.

[0094] When the predetermined water level is reached, close the drain valve 5 and control the inner drum to rotate at a high speed greater than the washing speed.

[0095] S3. Determine whether the inner cylinder rotation time has reached the preset time. If it has not reached the preset time, continue rotating the cylinder; if it has reached the preset time, open the drain valve and continue draining.

[0096] After closing the drain valve, the water at the preset level can be used to drive the cleaning particles to thoroughly rinse the bottom of the drum, accelerating the fusion of foam and water.

[0097] The turbulent drainage mode can also be performed without closing the drain valve, and the process steps include:

[0098] S1. Start draining by opening the drain valve;

[0099] S2. Determine if the water level has reached the preset water level. If it has not reached the preset water level, continue draining.

[0100] When the preset water level is reached, control the inner drum to rotate at a high speed greater than the washing speed.

[0101] S3. Determine whether the inner cylinder rotation time has reached the preset time. If it has not reached the preset time, continue rotating the cylinder; if it has reached the preset time, stop rotating the inner cylinder.

[0102] The main feature of the agitation drainage mode of the present invention is that the inner drum 2 rotates at a high speed greater than the washing speed, which drives the cleaning particles 3 to rub and collide with the side wall of the inner drum 2, thereby achieving the purpose of cleaning the side wall of the inner drum 2, and also achieving the purpose of accelerating the fusion of foam and water and eliminating foam. The drain valve can be flexibly controlled and is not limited to a certain opening and closing method.

[0103] Furthermore, the normal drainage mode is that the inner cylinder 2 is stationary or rotates at a low speed;

[0104] Preferably, the low speed is 0-100 rpm.

[0105] The normal drainage process includes:

[0106] S1. Start draining; S2. Open the drain valve; S3. The inner cylinder remains stationary or rotates at a low speed.

[0107] In the normal drainage mode of this invention, the inner drum 2 will not agitate the detergent water significantly, so the normal drainage mode will not generate a large amount of foam, and even low-speed rotation will not increase the amount of foam.

[0108] The present invention proposes a garment processing device, such as... Figure 5 As shown, this invention provides a drainage control method for implementing the aforementioned anti-overflow foaming method in a garment processing device. This invention does not employ any defoaming or anti-overflow foaming devices; instead, it effectively suppresses foam generation by adjusting the drainage mode during the garment processing stage, while simultaneously cleaning the side walls of the inner drum 2. This saves resources and costs, and provides excellent anti-overflow foaming performance. Compared to existing technologies that use various defoaming devices to eliminate foam after it has been generated, this invention is more cost-effective.

[0109] The garment processing device of the present invention includes,

[0110] The outer cylinder 1 has a drain valve 5 installed at its bottom to collect the cleaning particles 3;

[0111] Inner cylinder 2 is coaxially disposed inside outer cylinder 1; cleaning particles 3 for cleaning cylinder wall are provided in the space between the outer wall of inner cylinder 2 and the inner wall of outer cylinder 1.

[0112] During drainage, the cleaning particles 3 descend with the water level and are eventually collected in the drain valve 5. After the next water intake, they will re-enter the space as the water level rises.

[0113] When the turbulent drainage mode is used in this invention, the cleaning particles 3 rub and collide with the inner and outer cylinder walls to achieve the purpose of cleaning the inner cylinder 2, especially cleaning the bottom wall of the inner cylinder 2.

[0114] Furthermore, it also includes a foam detection unit for detecting the amount of foam in the garment processing equipment. The foam detection unit can be a foam sensor, detection probe, camera, and turbidity sensor 4, etc. The present invention can also use the rotation of a motor to detect whether the current exceeds a preset value to determine the amount of foam.

[0115] Preferably, the foam detection unit is a turbidity sensor 4, which is located on the side wall of the outer drum 1 near the bottom. The turbidity sensor 4 can detect whether the drum is covered by foam by detecting the light transmittance and send the detection information to the control unit of the garment processing equipment. When there is no foam, the light transmittance of the air inside the drum is within a certain range. The average of this range can be set as the initial reference value for light transmittance. When foam covers the turbidity sensor 4, the light transmittance value measured by the turbidity sensor 4 will decrease. This light transmittance value can be used as a standard to determine whether the amount of foam exceeds a preset threshold.

[0116] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-described technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A drainage control method for a garment processing device, characterized in that, Before draining the water during the washing stage, perform a foam test on the garment processing equipment: If the amount of foam in the clothing processing equipment is detected to be less than the preset threshold, the washing stage drainage is controlled to select the agitation drainage mode, and the rinsing stage drainage is controlled to select the agitation drainage mode. If the amount of foam detected in the garment processing equipment reaches or exceeds the preset threshold, the normal drainage mode is selected for the washing stage; the agitation drainage mode is selected for the rinsing stage. The turbulent drainage mode involves controlling the inner drum to rotate at a high speed, greater than the washing speed but lower than the spin-drying speed, when the water level reaches the preset level.

2. The drainage control method for a garment processing device according to claim 1, characterized in that, If the amount of foam detected in the garment processing equipment reaches or exceeds the preset threshold, while controlling the drainage during the washing stage to select the normal drainage mode, the drainage during the rinsing stage will be controlled to select the agitation drainage mode, and the duration and / or frequency of the agitation drainage mode will be increased.

3. The drainage control method for a garment processing device according to claim 2, characterized in that, The duration of the turbulent drainage mode is increased from 30 seconds to 2 minutes, and the number of times the turbulent drainage mode is increased is 1 to 3.

4. The drainage control method for a garment processing device according to claim 1, characterized in that, The inner cylinder rotation speed in the turbulent drainage mode is 40-200 rpm.

5. The drainage control method for a garment processing device according to claim 1, characterized in that, The normal drainage mode is that the inner cylinder is stationary or rotates at a low speed.

6. The drainage control method for a garment processing device according to claim 5, characterized in that, The low-speed rotation speed is 0-100 rpm.

7. A drainage control method for a garment processing device according to any one of claims 1-6, characterized in that, The turbulent drainage mode process includes the following steps: S1. Open the drain valve to start draining; S2. Determine if the water level has reached the preset water level. If it has not reached the preset water level, continue draining. If it has reached the preset water level, close the drain valve and control the inner drum to rotate at a high speed greater than the washing speed. S3. Determine whether the inner cylinder rotation time has reached the preset time. If it has not reached the preset time, continue rotating the cylinder; if it has reached the preset time, open the drain valve and continue draining.

8. A drainage control method for a garment processing device according to any one of claims 1-6, characterized in that, The turbulent drainage mode process includes the following steps: S1. Open the drain valve to start draining; S2. Determine if the water level has reached the preset water level. If it has not reached the preset water level, continue draining. If it has reached the preset water level, control the inner drum to rotate at a high speed greater than the washing speed. S3. Determine whether the inner cylinder rotation time has reached the preset time. If it has not reached the preset time, continue rotating the cylinder; if it has reached the preset time, stop rotating the inner cylinder.

9. A garment processing device, comprising: The outer cylinder (1) has a drain valve (5) installed at the bottom of the outer cylinder (1) to collect the cleaning particles (3); The inner cylinder (2) is coaxially arranged inside the outer cylinder (1); the space between the outer wall of the inner cylinder (2) and the inner wall of the outer cylinder (1) is provided with cleaning particles (3) for cleaning the cylinder wall; The foam detection unit is used to detect the amount of foam in the garment processing equipment, or to determine the amount of foam by detecting whether the current exceeds a preset value through motor rotation. The garment processing equipment is characterized in that it uses the drainage control method described in any one of claims 1-8 to drain water, and when the turbulent drainage mode is adopted, the cleaning particles (3) rub and collide with the inner and outer cylinder walls to clean the inner cylinder (2).

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