Spin control method, device and washing machine for a washing machine

Abstract

Provided are a dehydration control method and device of a washing machine and the washing machine, comprising: after starting a washing program, obtaining a load of laundry, water absorption of the laundry and a water level frequency change rate; dividing multiple gears according to the load and the water absorption of the laundry, and setting a threshold of the water level frequency change rate for different gears; comparing the water level frequency change rate with the threshold, judging a water supply pressure of the washing machine according to a comparison result, and determining a spraying and rinsing scheme based on the water supply pressure. The scheme removes a rinsing process during washing, and without adding an additional water pressure detection device, the water supply pressure can be judged by calculating the water level frequency, so that a reasonable spraying and rinsing scheme is determined, the washing operation time is greatly reduced, and water and electricity are saved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of automatic control, and more particularly to a dehydration control method and device of a washing machine and the washing machine. BACKGROUND

[0002] With the improvement of people's living standards, the user group's requirements for the washing machine have not only met the basic washing and convenience, but also increasingly concerned about the energy consumption of the washing machine itself. Especially in today's green energy-saving era, the energy consumption of the washing machine is too large, which is also a not small burden for the user. At the same time, in the fast-paced and efficient era, although the existing washing machine has various washing modes, the time spent in washing clothes is still too much, therefore, shortening the washing time and reducing the energy consumption of washing has become an urgent need of the user in the washing process. However, the water pressure of high-rise water supply is too low, which will affect the user's washing process, and increasing the water pressure / flow monitoring device not only increases the cost of the washing machine, but also makes the original machine structure more complex, affecting the user's washing experience.

[0003] Therefore, the prior art needs a dehydration control of a washing machine, which can effectively shorten the washing time and reduce the energy consumption.

[0004] The information disclosed in the background section merely to further understand the background of the present application, therefore it can contain information known to those of ordinary skill in the art which does not constitute prior art. SUMMARY

[0005] The present application relates to a dehydration control method and device of a washing machine and the washing machine.

[0006] According to the present application, the problems that can be solved include: it is difficult to remove the residual washing liquid contained in the clothes in the washing process, especially for the drum washing machine, which has a lower rinsing water level, and it is more difficult to rinse the clothes; and these residual washing liquid not only easily damages the clothes, but also easily causes bacterial infection of sensitive groups; in the washing process, due to insufficient water supply of high-rise building, sand particle blockage and other reasons, it is easy to cause the water supply pressure of the washing machine to be too small, which affects the actual effect of water inlet and spraying during washing.

[0007] The present application includes: spraying and rinsing the clothes during dehydration; and determining the water supply pressure of the washing machine based on the water level frequency of the washing machine, and determining the spraying and rinsing scheme based on the water supply pressure.

[0008] Specifically:

[0009] The first aspect of the present application provides a dehydration control method of a washing machine, S1: after starting the washing program, obtaining the clothes load, the clothes water absorption and the water level frequency change rate;

[0010] S2: dividing multiple levels according to the load of the clothes and the water absorption of the clothes, and setting a threshold of the water level frequency change rate for different levels; S3: comparing the water level frequency change rate with the threshold, judging the water pressure of the washing machine according to the comparison result, and determining the spray rinsing scheme based on the water pressure.

[0011] According to one embodiment of the present application, the multiple levels are preset according to the average water inflow rate of the clothes, and the multiple levels correspond to different thresholds of the water level frequency change rate, wherein the average water inflow rate is related to the load of the clothes and the water absorption of the clothes; the threshold of the water level frequency change rate is determined according to the level of the average water inflow rate of the clothes.

[0012] According to one embodiment of the present application, when the water level frequency change rate is greater than or equal to the threshold of the water level frequency change rate of the level, the spin-drying control is performed in a first mode, and when the water level frequency change rate is less than the threshold of the water level frequency change rate of the level, the spin-drying control is performed in a second mode; wherein the spray time and the spray times in the first mode are less than the spray time and the spray times in the second mode.

[0013] According to one embodiment of the present application, the water level frequency value L1 before water inflow, the water level frequency value L2 after water inflow, the water inflow time t recorded after completion of a certain water inflow, and the weight value m of the clothes are obtained, and the average water inflow rate of the clothes is n=v / m, wherein the water inflow rate v=(L2-L1) / t, and the weight value of the clothes is related to the load of the clothes.

[0014] According to one embodiment of the present application, in the step S1, obtaining the water level frequency change rate includes: collecting the frequency value of the real-time water level when the washing machine inflows water, and obtaining the water level frequency change rate by fitting the function y=k*x -S , wherein y is the frequency value of the real-time water level, x is the independent variable of the water inflow time, k is a constant coefficient, and S is the water level frequency change rate.

[0015] According to one embodiment of the present application, the water level frequency change rate is related to the water pressure of the water inflow of the washing machine.

[0016] According to one embodiment of the present application, multiple levels are divided according to the average water inflow rate of the clothes, and different thresholds of the water level frequency change rate are set for each level.

[0017] According to one embodiment of the present application, wherein in the step S3, the dehydration control in the first mode comprises: S21: setting a spraying counter N; S22: the washing machine performs a washing dehydration at a speed V2; S23: spraying at a speed V1 for a time T1; S24: determining whether the spraying times N is greater than or equal to a preset spraying times N1; S25: if N≥N1, the first mode dehydration control is completed; S26: if N<N1, re-executing the steps S22-S25.

[0018] According to one embodiment of the present application, wherein in the step S3, the dehydration control in the second mode comprises: S31: setting a spraying counter N; S32: the washing machine performs a washing dehydration at a speed V2; S33: spraying at a speed V1 for a time T2; S34: determining whether the spraying times N is greater than or equal to a preset spraying times N2; S35: if N≥N2, the first mode dehydration control is completed; S36: if N<N2, re-executing the steps S32-S35.

[0019] The second aspect of the present application provides a washing machine dehydration control device, comprising a memory and a processor; the memory is used for storing a computer program; the processor is used for realizing the above-mentioned method when executing the computer program.

[0020] According to one embodiment of the present application, wherein after the step S3, further comprising: S4: the washing machine performs a final dehydration at V3, and after the dehydration is completed, the clothes are shaken and the motor is stopped.

[0021] According to one embodiment of the present application, wherein the speed V1 of the washing machine is less than V2 and V3; N1 is less than N2; T1 is less than T2. The speed V1 is in the range of 100-1000 rpm; the speed V2 and V3 are in the range of 600-1600 rpm; the spraying time T1 and T2 are in the range of 0.5-12 min; the spraying times N1 and N2 are in the range of 1-8 times.

[0022] The second aspect of the present application provides a washing machine dehydration control device, comprising a memory and a processor; the memory is used for storing a computer program; the processor is used for realizing the above-mentioned method when executing the computer program.

[0023] The third aspect of the present application provides a washing machine, which uses the above-mentioned washing machine dehydration control method, or comprises the above-mentioned washing machine dehydration control device.

[0024] The present application removes the rinsing process in laundry, removes the rinsing clothes through spraying, greatly reduces the laundry running time, and saves water and electricity. Based on the clothes load and water absorption, the water pressure is judged by detecting the change rate of water level frequency when water is entered, and the corresponding spraying and rinsing scheme is executed based on the water pressure. The present application can determine the reasonable spraying and rinsing scheme by calculating the water level frequency without increasing the additional water pressure detection device, so as to ensure the rinsing effect of the clothes and greatly shorten the laundry time. BRIEF DESCRIPTION OF DRAWINGS

[0025] In order to more clearly illustrate the technical solutions of the present application, the drawings needed in the following embodiment description will be briefly described. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0026] Figure 1 It is an appearance view of a washing machine according to an exemplary embodiment of the present application.

[0027] Figure 2 It is a sectional view of a washing machine according to an exemplary embodiment of the present application.

[0028] Figure 3 It is a dehydration control flowchart of a washing machine according to an exemplary embodiment of the present application.

[0029] Figure 4 It is an implementation block diagram of the dehydration control of the washing machine according to an exemplary embodiment of the present application.

[0030] Figure 5a , Figure 5b and Figure 5c It is a fitting curve diagram of the preset preferred value of the water level frequency change rate according to an exemplary embodiment of the present application. DETAILED DESCRIPTION

[0031] As used herein, the word "first", "second", etc. can be used to describe an element in an exemplary embodiment of the present application. These words are only used to distinguish one element from another element, and the inherent characteristics or order of the corresponding element are not limited by the words. Unless otherwise defined, all terms used herein (including technical or scientific terms) have the same meaning as that understood by those skilled in the art to which the present application belongs. Those terms defined as in common dictionaries are interpreted as having the same meaning as the context in the relevant technical field, and are not interpreted as having ideal or overly formal meanings, unless clearly defined as having such meanings in the present application.

[0032] Those skilled in the art will understand that the apparatus and methods of the present application described herein and illustrated in the accompanying drawings are non-limiting exemplary embodiments and that the scope of the present application is defined only by the claims. Features illustrated or described as part of one exemplary embodiment can be utilized with another embodiment. Such modifications and variations are intended to be included within the scope of the present application.

[0033] Hereinafter, exemplary embodiments of the present application will be described in detail with reference to the accompanying drawings. In the drawings, detailed descriptions of related known functions or configurations will be omitted to avoid unnecessarily obscuring the technical idea of the present application. In addition, throughout the description, like reference numerals refer to like circuits, modules or units and repetitive description on like circuits, modules or units will be omitted for brevity.

[0034] Further, it should be understood that one or more of the following methods or aspects thereof can be performed by at least one control unit or controller. The term "control unit", "controller", "control module" or "hosting module" can refer to a hardware device that includes a memory and a processor. The memory or computer readable storage medium is configured to store program instructions, and the processor is specifically configured to execute the program instructions to perform one or more processes to be described further below. Moreover, it should be understood that the following methods can be performed by including a processor and in combination with one or more other components, as will be appreciated by one of ordinary skill in the art.

[0035] The current washing machine needs to go through multiple processes such as washing, rinsing, and dehydration during the washing process, and each process not only takes a lot of time, but also consumes a lot of water and electricity. At the same time, during the washing process of the washing machine, the washing liquid penetrates into the fibers of the clothes, and it is difficult to remove the residual washing liquid contained in the clothes during the washing process, especially for the drum washing machine, which has a lower rinsing water level, and it is more difficult to rinse the clothes; and these residual washing liquid not only easily damages the clothes, but also easily causes bacterial infection of sensitive groups.

[0036] During the washing process, due to insufficient water supply of high floors, sand particle blockage of water supply and other reasons, it is easy to cause the water supply pressure of the washing machine to be too small, affecting the actual effect of water inflow and spraying during washing. If a water pressure detection device is added, not only will it increase the cost of the washing machine, but also it will make the original compact structure of the washing machine more complex, greatly affecting the development of the washing machine and the quality experience of users.

[0037] The present application removes the rinsing process in laundry, adopts spray rinsing to remove the rinsed laundry, that is, through spray rinsing to remove the rinsed laundry in the dehydration process, rinsing and dehydration simultaneously, and matches the variable rhythm rinsing and dehydration scheme, which can remove the rinsed laundry, save time and water and electricity due to the removal of multiple rinsing in the original program. Through spray rinsing to remove the rinsed laundry, after the main washing drainage, the dehydration process is entered. First, the dehydration is carried out at high speed for a period of time to remove the residual water in the laundry, and then the speed is reduced to spray and rinse the laundry while dehydrating. After the main washing drainage, the residual water in the laundry is removed at high speed, and then the laundry is sprayed and rinsed while dehydrating at low speed, and at the same time the drainage valve is opened, the residual water of the spray rinsing is directly discharged outside the barrel to prevent secondary pollution, which removes multiple rinsing in the original program, greatly reduces the running time of laundry, and also saves water and electricity.

[0038] In the laundry process, too low water supply pressure will affect the laundry effect, and additional water pressure detection device will increase the cost of the washing machine, therefore, the present application provides a calculation method, which judges the water supply pressure by detecting the change rate of water level frequency when water is entered, and executes the corresponding spray rinsing and dehydration scheme based on the height of the water pressure. However, the fluctuation of water level frequency will be affected by the water absorption and load of the laundry, therefore, when judging the height of the water supply pressure, the influence of the laundry to be washed on the water level frequency should be considered. Therefore, the present application weighs the laundry before water is entered to obtain the load, and calculates the water inlet rate of the laundry when water is entered, and judges the speed of water absorption of the laundry through the water inlet rate. The present application divides multiple gears based on the different load and water absorption of the laundry, and the preset values of the water level frequency change rate corresponding to different gears are different, so that based on the load and water absorption of the laundry, the water supply pressure is judged by detecting the change rate of water level frequency when water is entered, and the corresponding spray rinsing and dehydration scheme is executed based on the height of the water pressure. The present application can judge the height of the water supply pressure without adding additional water pressure detection device, that is, by calculating the water level frequency, so as to determine the reasonable spray rinsing and dehydration scheme, which can ensure the rinsing effect of the laundry and greatly shorten the laundry time.

[0039] Figure 1 It is an appearance view of a washing machine according to an exemplary embodiment of the present application. Figure 2 It is a sectional view of a washing machine according to an exemplary embodiment of the present application.

[0040] As Figure 1 and Figure 2As shown, the symbols of each part in the washing machine are as follows: 1. detergent box; 2. display screen; 3. door body; 4. drainage pump; 5. washing machine shell; 6. spray head; 7. spray water droplets; 8. axial barrel bottom. When the spray rinsing is performed, the water flow is sprayed out from the spray head 6, and the spray water droplets 7 fall on the clothes on the inner cylinder axial barrel bottom 8 through the spray path to spray and rinse the clothes. The control method of the present application removes the traditional rinsing process and replaces it with spray rinsing to rinse the clothes, which not only greatly shortens the washing time, but also saves the water and electricity consumption in the washing process. In addition, the water level sensor is used to detect the water level, and the sensor feedback is the water level frequency value. When the water is filled, the water level frequency value also changes correspondingly with the increase of the water level, and the water pressure is judged by the water level frequency change rate.

[0041] Figure 3 The dehydration control flow chart of the washing machine according to the exemplary embodiment of the present application is shown.

[0042] As shown in Figure 3 ,

[0043] S1: after starting the washing program, the load of the clothes, the water absorption of the clothes and the water level frequency change rate are obtained;

[0044] S2: according to the load and the water absorption of the clothes, a plurality of gears are divided, and the threshold value of the water level frequency change rate is set for different gears;

[0045] S3: the water level frequency change rate is compared with the threshold value, the water supply pressure of the washing machine is judged according to the comparison result, and the spray rinsing scheme is determined based on the water supply pressure.

[0046] Among them, the plurality of gears are preset according to the average water inflow rate of the clothes, and the plurality of gears correspond to different water level frequency change rate threshold values, wherein the average water inflow rate is related to the load of the clothes and the water absorption of the clothes; the water level frequency change rate threshold value is determined according to the gear of the average water inflow rate of the clothes. When the water level frequency change rate is greater than or equal to the water level frequency change threshold value of the gear, the dehydration control is performed in a first mode, and when the water level frequency change is less than the water level frequency change threshold value of the gear, the dehydration control is performed in a second mode; wherein the spray time and the spray times in the first mode are less than the spray time and the spray times in the second mode.

[0047] Figure 4 The implementation block diagram of the dehydration control of the washing machine according to the embodiment of the present application is shown.

[0048] As shown in Figure 4 , in step S101: starting the washing program,

[0049] S102: the washing machine starts weighing and obtains the weighing value m;

[0050] S103: Determine the weight of the clothes to be washed, then open the water inlet valve to fill the inner drum with water and obtain the corresponding water inlet information. At this time, the water inlet information of the clothes should at least include the water level frequency values ​​L1 / L2 before and after water inlet, the water inlet time t, etc. The water level frequency value is a digital signal fed back by the water level sensor. By using the mapping table between the sensor's water level frequency and the water level, the corresponding water level can be obtained. By observing the rate of change of the water level frequency, the magnitude of the water supply pressure can be determined.

[0051] S104: Based on the water intake information of the clothes, calculate the water intake rate v of the clothes to determine the water absorption of the clothes to be washed. The water intake rate v = (L2-L1) / t. Clothes with strong water absorption will take longer to get wet and the water intake rate will be smaller.

[0052] S105: Then, based on the previous weighing values ​​and water inlet rate, calculate the average water inlet rate n of the garments; the average water inlet rate n = v / m, that is, the average water inlet rate n represents the rate at which water enters each kilogram of garments, thus determining the degree to which the weight of the garments and their absorbency affect the water inlet rate. Since the water inlet rate differs significantly between one or two garments and a full load of garments, the average water inlet rate n also needs to be differentiated into multiple levels;

[0053] S106: Based on the real-time changes in water level frequency during the water ingress process obtained from the previously acquired information on water ingress of clothing, the water level frequency change rate S can also be calculated. Thus, the water level frequency change rate S can be used to determine whether the water supply pressure is in a low water pressure state. The lower the water supply pressure, the slower the change in water ingress frequency when clothing is ingressed, and the smaller S is. After the water ingress is completed, the corresponding water level frequency value data points can be obtained. By fitting a power function, S can be obtained.

[0054] According to one or more embodiments of the present invention, after the water intake is completed, the corresponding water level frequency value data points can be obtained, expressed in the form of a power function y = k*x. -S By fitting the data, we can obtain the rate of change of the water level frequency value, S (the rate of change of water level frequency). The greater the water pressure, the faster the water level frequency value changes, and the larger S is.

[0055] S107: By comparing the water level frequency change rate S with the preset value S 预设 The results were compared, and then different spray bleaching processes were performed.

[0056] S108: Set the spray frequency variable to count the number of sprays;

[0057] S110: After the main wash cycle is complete and the clothes have drained, first increase the drum speed to speed V2 for washing and spin-drying to remove the large amount of wash water from the clothes.

[0058] S112: Then reduce the speed to V1 to spray and remove the detergent. After the spray, the drain valve is opened, and the water is sprayed from the inlet valve through the spray head 6 to the clothes in the inner drum, the spray water dissolves and dilutes the detergent on the clothes, and then the water is drained through the drain valve to remove the detergent. In the dehydration process, the clothes are dehydrated and sprayed at the same time. First, the clothes are dehydrated at a high speed for a period of time to remove the residual water in the clothes, and then the clothes are dehydrated and sprayed at a low speed. After the main washing and drainage, the residual water in the clothes is removed at a high speed, and then the clothes are dehydrated and sprayed at a low speed. At the same time, the drain valve is opened, and the residual water of the spray and removal is directly drained out of the drum to prevent secondary pollution. In this way, the multiple rinsing in the original program is removed, the running time of the washing machine is greatly reduced, and water and electricity are saved;

[0059] S114: Increase the number of sprays and execute steps S110-S112;

[0060] S116: Then detect the number of sprays N, and compare it with the preset number of sprays N1. When the number of sprays reaches the preset number, enter the next stage S118, otherwise, return to S110 to spray and remove the detergent again;

[0061] S109: When S < S 预设 , set the spray number variable and count the number of sprays;

[0062] S111: After the main washing of the clothes is completed and the drainage is completed, first increase the speed of the inner drum to V2 to wash and dehydrate, and remove a large amount of washing water from the clothes;

[0063] S113: When S < S 预设 , it means that the water pressure at this time is low, the water pressure of the spray is too small, the amount of spray water and the washing intensity of the clothes are insufficient, and it is difficult to completely remove the residual detergent in the clothes. Therefore, the number of sprays needs to be increased and the duration of the spray needs to be extended, that is, the preset number of sprays N1 < N2, and the spray duration T1 < T2. When the number of sprays meets the preset value, stop spraying;

[0064] S115: Increase the number of sprays and execute steps S111-S115;

[0065] S117: Then detect the number of sprays N, and compare it with the preset number of sprays N2. When the number of sprays reaches the preset number, enter the next stage S118, otherwise, return to S111 to spray and remove the detergent again;

[0066] S118: Increase the speed of the inner drum to V3 to perform the final dehydration;

[0067] S119: Then shake the clothes and stop the motor;

[0068] S120: end the laundry process.

[0069] According to one or more embodiments of the present application, in Figure 3 In an embodiment of the present application, V1 / V2 / V3, N1 / N2, T1 / T2 are set values, wherein V1

[0070] According to one or more embodiments of the present application, Table 1 is a list of preset preferred values of the water level frequency change rate S corresponding to different average water inlet rate levels. Different average water inlet rates are used for different clothes materials and load amounts. According to preset values n1 and n2, n is divided into three levels: fast, medium, and slow.

[0071] Table 1:

[0072] Average water inflow rate n Rate of change of water level frequency S 预设 ]]> n < nl 0.024 n1 < n < n2 0.015 n > n2 0.006

[0073] According to one or more embodiments of the present application, Table 4 is a list of preset preferred values of the water level frequency change rate S corresponding to different average water inlet rate levels of the present application. According to the calculated average water inlet rate n, three different levels are divided, and the preset values S of the water level frequency change rate corresponding to different levels are different. After obtaining the clothes water inlet information each time, the size of S and the preset value is compared, so as to determine the size of the water supply pressure. When the average water inlet rate n of the clothes to be washed is in the first level n≤n1, the water level frequency change rate S is judged. When S

[0074] Figure 5a , Figure 5b and Figure 5c The fitting curve diagram of the preset preferred values of the water level frequency change rate S according to the exemplary embodiments of the present application.

[0075] As shown in Figure 5a , Figure 5b and Figure 5c The fitting curve diagram of the preset preferred values of the water level frequency change rate S, as shown in Figure 5a , Figure 5b and Figure 5c Taking the preset preferred values of Table 4 as an example, the real-time water level frequency value collected after water inlet is fitted by a power function, that is, y=k*x -S, y is the water level frequency value, x is the water inlet time, k is a constant coefficient, and S is the water level frequency change rate, so that the water level frequency change rate S of each water inlet is calculated, and the preset value S is compared to determine whether the water supply pressure is low water pressure.

[0076] According to one or more embodiments of the present application, the present application removes the rinsing process in the laundry process, adopts the spray rinsing to remove the rinsed clothes, that is, the rinsed clothes are removed through the spray in the dehydration process, and the rinsing and dehydration are performed simultaneously, and the variable rhythm rinsing and dehydration scheme is adopted, so that the clothes can be rinsed, the time can be saved due to the removal of the multiple rinsing in the original program, and water and electricity can be saved. The rinsed clothes are removed through the spray, and after the main washing is drained, the dehydration process is entered. The clothes are dehydrated at a high speed for a period of time to remove the residual water in the clothes, and then the speed is reduced to spray and rinse the clothes while dehydrating. After the main washing is drained, the residual water in the clothes is removed at a high speed, and then the clothes are sprayed and rinsed while dehydrating at a low speed. At the same time, the drain valve is opened, the residual water of the spray rinsing is directly drained outside the barrel, and secondary pollution is prevented. In this way, the multiple rinsing in the original program is removed, the running time of the laundry is greatly reduced, and water and electricity are saved.

[0077] According to one or more embodiments of the present application, the present application removes the rinsing process in the laundry process, adopts the spray rinsing to remove the rinsed clothes, that is, the rinsed clothes are removed through the spray in the dehydration process, and the rinsing and dehydration are performed simultaneously, and the variable rhythm rinsing and dehydration scheme is adopted, so that the clothes can be rinsed, the time can be saved due to the removal of the multiple rinsing in the original program, and water and electricity can be saved. The rinsed clothes are removed through the spray, and after the main washing is drained, the dehydration process is entered. The clothes are dehydrated at a high speed for a period of time to remove the residual water in the clothes, and then the speed is reduced to spray and rinse the clothes while dehydrating. After the main washing is drained, the residual water in the clothes is removed at a high speed, and then the clothes are sprayed and rinsed while dehydrating at a low speed. At the same time, the drain valve is opened, the residual water of the spray rinsing is directly drained outside the barrel, and secondary pollution is prevented. In this way, the multiple rinsing in the original program is removed, the running time of the laundry is greatly reduced, and water and electricity are saved.

[0078] The present application also provides a dehydration control device of a washing machine, comprising a memory and a processor; the memory is used for storing a computer program; and the processor is used for realizing the above-mentioned method when the computer program is executed.

[0079] The present application also provides a washing machine using the above-described dehydration control method of a washing machine, or including the above-described dehydration control device of a washing machine.

[0080] According to one or more embodiments of the present application, the control logic in the systems of the present application can be implemented using encoded instructions (e.g., computer and / or machine readable instructions) stored on a non-transitory computer and / or machine readable medium (e.g., a hard disk drive, flash memory, read only memory, optical disk, digital versatile disk, cache, random access memory, and / or any other storage device or storage disk) that stores information for any duration (e.g., for extended time periods, for permanent storage, for brief instances, for temporarily buffering, and / or for caching of the information). As used herein, the term non-transitory computer readable medium is expressly defined to include any type of computer readable storage device and / or storage disk and excludes propagating signals and transitory media.

[0081] According to one or more embodiments of the present application, the logic in the systems of the present application can be implemented using control circuitry, (control logic, master control system, or control module) which can contain one or more processors and can internally contain a non-transitory computer readable medium. Specifically, the master control system or control module can comprise a microcontroller MCU. The processor(s) used to implement the processing of the logic in the systems of the present application can be such as, but not limited to, one or more single core or multi-core processors. The processor(s) can include any combination of general-purpose processors and dedicated processors (e.g., graphics processors, application processors, etc.). The processor(s) can be coupled to and / or can include memory / storage and can be configured to execute instructions stored in the memory / storage to implement various applications and / or operating systems running on the controller in the present application.

[0082] The above description of the drawings and detailed description of the present application used as examples of the present application relate to explaining the present application, but do not limit the meaning or scope of the present application described in the claims. Therefore, those skilled in the art can easily implement modifications from the above description. In addition, those skilled in the art can delete some of the constituent elements described herein without degrading performance, or can add other constituent elements to improve performance. Furthermore, those skilled in the art can change the order of the steps of the method described herein according to the environment of the process or equipment. Therefore, the scope of the present application should not be determined by the above-described embodiments, but by the claims and their equivalents.

[0083] While this application has been described in connection with what is presently considered to be the most practical embodiment, it is to be understood that the application is not to be limited to the disclosed embodiments, but on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims.

Claims

1. A method for controlling the spin-drying process of a washing machine, characterized in that: During the dehydration process, clothes are rinsed by spraying; and The water pressure of the washing machine is determined based on the water level frequency of the washing machine, and the spray rinsing scheme is determined based on the water pressure. The method of determining the water supply pressure of the washing machine based on the water level frequency of the washing machine includes: Based on the water level frequency, through the function y=k*x -S The water level frequency change rate is determined by fitting, where y is the frequency value of the real-time water level, x is the independent variable of the inflow time, k is a constant coefficient, and S is the water level frequency change rate. The garments are divided into multiple levels based on their load capacity and absorbency, and a threshold for the water level frequency change rate is set for each level. The absorbency of the garments is determined by the water inlet rate calculated from the water level frequency and the water inlet time. The water level frequency change rate is compared with a threshold, and the water pressure supplied to the washing machine is determined based on the comparison result.

2. The method according to claim 1, characterized in that: The steps of determining the washing machine's water supply pressure based on the washing machine's water level frequency, and determining the spray rinsing scheme based on the water supply pressure, include: S1: After starting the washing program, obtain the load of clothes, the water absorption of clothes and the frequency of water level change. S2: Divide the garment into multiple levels based on its load capacity and absorbency, and set thresholds for the water level frequency change rate for different levels. S3: Compare the water level frequency change rate with the threshold, determine the water pressure of the washing machine based on the comparison result, and determine the spray rinsing scheme based on the water pressure.

3. The method according to claim 2, characterized in that: Step S2 divides the clothing into multiple levels based on its load capacity and absorbency, and sets threshold values ​​for the water level frequency change rate for different levels, including: The multiple speed settings are preset according to the average water inlet rate of the clothing, and the multiple speed settings correspond to different water level frequency change rate thresholds, wherein the average water inlet rate is related to the clothing load and the water absorption of the clothing; The threshold for the water level frequency change rate is determined based on the level of the average water inflow rate of the clothing.

4. The method according to claim 3, characterized in that: Step S3 compares the water level frequency change rate with a threshold, determines the washing machine's water supply pressure based on the comparison result, and determines the spray rinsing scheme based on the water supply pressure. When the rate of change of water level frequency is greater than or equal to the water level frequency change threshold of the current gear, dehydration control is performed in the first mode; when the rate of change of water level frequency is less than the water level frequency change threshold of the current gear, dehydration control is performed in the second mode. In the first method, the spraying time and the number of sprays are less than those in the second method.

5. The method according to any one of claims 2-4, characterized in that: In step S2, obtaining the average water ingress rate of the clothing includes: The water level frequency value L1 before water intake, the water level frequency value L2 after water intake, the water intake time t recorded after a certain water intake, and the weight value m of the clothing are obtained. The average water intake rate of the clothing is n=v / m, where the water intake rate v=(L2-L1) / t, and the weight value of the clothing is related to the load of the clothing.

6. The method according to any one of claims 2-4, characterized in that: In step S1, obtaining the water level frequency change rate includes: collecting the real-time water level frequency value when the washing machine is filling with water, and then processing it using the function y=k*x. -S A fitting method is used to obtain the rate of change of water level frequency, where y is the frequency value of real-time water level, x is the independent variable of water inflow time, k is a constant coefficient, and S is the rate of change of water level frequency.

7. The method according to claim 5, characterized in that: The water level frequency change rate is related to the water pressure at the washing machine inlet; the average water inlet rate of the clothes is related to the weight of the clothes and the water inlet rate.

8. The method according to claim 4, characterized in that: In step S3, the dehydration control in a first manner includes: S21: Set the spray counter N; S22: The washing machine performs washing and spin-drying at a spin speed of V2; S23: Spraying is performed at a rotation speed of V1 for a duration of T1; S24: Determine whether the number of spraying times N is greater than or equal to the preset number of spraying times N1; S25: If N ≥ N1, then the dehydration control in the first mode is completed; S26: If N < N1, re - execute steps S22 - S25.

9. The method according to claim 8, characterized in that: In step S3, the dehydration control in the second mode includes: S31: Set the spray counter N; S32: The washing machine performs washing and dehydration at a speed V2; S33: Spray at a speed V1 for a spray duration of T2; S34: Determine whether the number of spray times N is greater than or equal to the preset number of spray times N2; S35: If N ≥ N2, then the dehydration control in the first mode is completed; S36: If N < N2, re - execute steps S32 - S35.

10. The method according to claim 9, characterized in that: After step S3, it further includes: S4: The washing machine performs final dehydration at V3. After the dehydration is completed, fluff the clothes and stop the motor.

11. The method according to claim 10, characterized in that: The speeds of the washing are V1 < V2 ≤ V3; N1 < N2; T1 < T2.

12. The method according to claim 11, characterized in that: The value range of the speed V1 is 100 - 1000 rpm; the value ranges of the speeds V2 and V3 are 600 - 1600 rpm, the value ranges of the spray durations T1 and T2 should be 0.5 - 12 min; the value ranges of the number of spray times N1 and N2 are 1 - 8 times.

13. A spin-drying control device for a washing machine, comprising a memory and a processor; said memory for storing a computer program; characterized in that: The processor is used to implement the method according to any one of claims 1 - 12 when executing the computer program.

14. A washing machine, characterized in that: It uses the dehydration control method of the washing machine according to any one of claims 1 - 12, or includes the dehydration control device of the washing machine according to claim 13.

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