CN103334255B - A kind of intelligent dehydration controlling method of washing machine - Google Patents
A kind of intelligent dehydration controlling method of washing machine Download PDFInfo
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- CN103334255B CN103334255B CN201310233903.XA CN201310233903A CN103334255B CN 103334255 B CN103334255 B CN 103334255B CN 201310233903 A CN201310233903 A CN 201310233903A CN 103334255 B CN103334255 B CN 103334255B
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Abstract
The invention discloses the intelligent dehydration controlling method of a washing machine, relate to the intelligent control technology of washing machine.Existing laundry machine dehydration process there is motor speed and clothing does not mate, and dewatering time is long, the problem that the loss of electric machine is large.Dehydration is divided into some stages by control system by the present invention, same stage is constant or current of electric constant control motor operation with motor speed, after one-phase moves to satisfied imposing a condition, control system controls quantitatively to improve motor speed or current of electric, making motor enter next stage operation, terminating dehydration when reaching the dehydration termination condition of control system setting.With the electric current of the adjustment of quantitative manner stage by stage motor or rotating speed, when preventing from starting to dewater, motor speed is excessive, also can make adjustment to motor in time when ensureing that clothes dewatering amount reaches capacity, thus reduce unnecessary running time and avoid too high dehydrating speed, decrease the loss of dewatering time and motor, save power consumption.
Description
Technical field
The present invention relates to the dehydration technique of washing machine, specifically refer to a kind of control method according to motor for washer torque adjustment motor speed and dewatering time.
Background technology
Laundry machine dehydration method make use of the centrifugal force that cylinder produces when high speed rotating be separated from clothing by moisture and throw away.Washing machine is in dehydration, the clothing material of each dehydration and laundry amounts are different often, in order to the clothing and different laundry amounts that ensure various material have good dehydrating effect, before washing machine dispatches from the factory, need on the control chip of washing machine, be loaded into control program fix dehydrating speed and dewatering time, this dehydrating speed and dewatering time to be then through experiment and to draw, the clothing material that can make to dewater the most difficult and maximum laundry amounts can reach qualified dehydrating effect, therefore in the process of user's actual use washing machine because the situations such as clothing is less or clothing material is easily dewatered often cause the waste of electricity, the unnecessary loss of motor or the overlong time with dehydration.If when starting to dewater, motor speed is crossed conference and is caused the drainage speed of washing machine not catch up with moisture departing from the speed of clothing and cause cylinder internal water accumulation too much to hinder whole dehydration process.
Summary of the invention
The invention provides a kind of intelligent dehydration controlling method of washing machine, can be implemented in dehydration, can prevent the dehydration initial stage due to rotating speed too fast, cause tube filled with water internal water accumulation, hinder dehydration, the speed that can depart from according to actual clothing moisture in addition and moisture, the rotating speed of adjustment motor and the time of dehydration, decrease unnecessary running time, thus decrease the loss of motor, save power consumption and dewatering time.
For the technical scheme that the present invention relates to is described, the physical equation first related to for motor for washer and relevant knowledge do to be introduced:
Formula 1:T=F × R
Wherein F is the driving force that motor exports, and it is proportional with washing machine drum undergarment weight, and T is the torque that motor exports, and R is the radius of gyration of motor load.According to above-mentioned formula, along with the carrying out of dehydration, clothing moisture declines, and the driving force that required motor exports declines, and the torque that therefore motor exports declines, and draws the proportional relationship of motor output torque and clothing institute moisture.
Formula 2: power of motor formula P=U × I=n × K × T
Wherein U is motor operating voltage, the electric current flowed through when I is machine operation, and n is motor speed, and K is constant, and T is the torque that motor exports.
In order to solve the problems of the technologies described above, the invention provides a kind of intelligent dehydration controlling method of washing machine, dehydration is divided into some stages by control system, the electric current of real-time detection motor and rotating speed, same stage is with the constant operation of motor speed, and when the current change quantity of motor goes to zero, control system quantitatively improves motor speed, making motor enter next stage operation, terminating dehydration when reaching the dehydration termination condition of control system setting.Motor speed is the direct factor affecting dewatering, and the present invention adjusts motor speed from small to large with incremental manner stage by stage and can prevent the motor speed when starting to dewater from crossing the problem of the laundry machine barrel internal water accumulation that conference cause the drainage speed of washing machine not catch up with speed that moisture departs from clothing causes.
According to above-mentioned formula 1 and formula 2, when motor speed keeps constant, current of electric and motor output torque direct proportionality, namely with the moisture direct proportionality of clothing, the Driving Torque of motor can be drawn by detecting current of electric, also the moisture situation of clothing can just be drawn, when the current change quantity of motor goes to zero, mean under current motor rotating speed, dehydrating amount is close to maximum, moisture content is close to minimum, therefore go to zero as improving imposing a condition of motor speed using the current change quantity of motor, coordinate the mode adopted by quantitatively increasing progressively motor speed stage by stage simultaneously, not only can ensure there is suitable motor speed in dehydration and in good time adjustment motor speed, meet dehydrating effect and save dewatering time.
As preferably, the current change quantity of described motor is adopted and is obtained with the following method: control system Timing measurement current of electric size, the measurement point of interval same number, and be the current average that a unit calculates this unit with several measurement points of continuous print, and progressively obtaining the difference of two adjacent cells current averages, this difference is the current change quantity of motor.According to above-mentioned formula, when constant motor rotating speed, the current change quantity of motor directly reflects the situation of clothes dewatering, for variable-frequency motor, because the fluctuation ratio of the current of electric detected itself is larger, for drawing more accurate data, need the mode adopting repetitive measurement to average to reduce measure error, the mean value that the measurement point of interval same number is got then ensures that mean value subtracts each other the variable quantity obtained and has comparativity.
As preferably, described dehydration termination condition is one in following condition: the number of increments of the motor speed of total dewatering time of setting, the clothing moisture content of setting and setting.When ensureing dehydrating effect, in multiple dehydration conditions can be selected.
As further improvement, before dehydration, user set dehydration after clothing moisture content and preserve in the controls, when moisture content drops to setting value, stop dehydration, the measuring method of clothing moisture content is: before washing machine dispatches from the factory, the current of electric I1 of the empty bucket of control system record under a constant rotational speed, and calculates the torque T1 preserving motor and export; After user drops into drying thing, control system record containing the current of electric I2 of drying thing under same rotational speed, and calculates the torque T2 preserving motor and export; When dehydration starts, the current of electric I3 of record aqueous laundry under same rotational speed, and calculate the torque T3 preserving motor and export; Calculate the torque that T2 and T1 difference S1 is the life of drying produce, the difference S2 calculating T3 and T1 is the torque that wet wash produces, and the ratio of S2 and S1 is clothing moisture content.Described moisture content is the ratio of aqueous laundry weight and dry clothes weight, and the moisture of clothing is reacted on motor output torque, as long as so the torque phase ratio that torque raw for drying produce and wet wash are produced, according to above-mentioned two formula, under identical motor speed, there is proportional relationship with Driving Torque in current of electric, as long as therefore measure current of electric just can calculate torque.
In order to solve the problems of the technologies described above, present invention also offers the intelligent dehydration controlling method of another kind of washing machine, dehydration is divided into some stages by control system, the electric current of real-time detection motor and rotating speed, same stage is with the constant operation of current of electric, and when the rotation speed change amount of motor goes to zero, control system quantitatively improves current of electric, making motor enter next stage operation, terminating dehydration when reaching the dehydration termination condition of control system setting.This programme is identical with the principle that above-mentioned constant motor tachometric survey current of electric scheme utilizes, but control mode is different, can reach the technique effect that can reach in above-mentioned scheme equally.This programme stablizes current of electric in same stage, according to above-mentioned formula 1 and formula 2, motor speed is increase all the time in whole dehydration, under certain current of electric, mean that the power that motor exports also is constant, so motor speed variable quantity when this current of electric is issued to certain value can go to zero, under meaning this current condition, dehydrating amount is close to maximum, moisture content, close to minimum, quantitatively increase current of electric and dewaters further with expanded motor rotating speed.
Improving and optimizating further as this programme, takes following measure, but operation principle and technique effect and an aforesaid upper scheme similar, have difference to be described, exist together mutually, repeat no more.
The rotation speed change amount of described motor is adopted and is obtained with the following method: control system Timing measurement motor speed size, the measurement point of interval same number, and be the rotating speed mean value that a unit calculates this unit with several measurement points of continuous print, and progressively obtaining the difference of two adjacent cells rotating speed mean values, this difference is the rotation speed change amount of motor.Measure the variable quantity of rotating speed and also will consider that numerical value is accurate, but due to motor speed fluctuation of motor current of comparing less, only can get a measurement point at a unit theoretically, but precision is inadequate equally.
Described dehydration termination condition is one in following condition: the number of increments of current of electric of total dewatering time of setting, the clothing moisture content of setting and setting.
Before dehydration, user set dehydration after clothing moisture content and preserve in the controls, when moisture content drops to setting value, stop dehydration, the measuring method of clothing moisture content is: before washing machine dispatches from the factory, the motor speed N1 of the empty bucket of control system record under a constant current, and calculate the torque T1 preserving motor and export; After user drops into drying thing, control system record containing the motor speed N2 of drying thing under same current, and calculates the torque T2 preserving motor and export; When dehydration starts, the motor speed N3 of record aqueous laundry under same current, and calculate the torque T3 preserving motor and export; Calculate the torque that T2 and T1 difference S1 is the life of drying produce, the difference S2 calculating T3 and T1 is the torque that wet wash produces, and the ratio of S4 and S3 is clothing moisture content.
After adopting technique scheme, tool of the present invention has the following advantages:
Utilize the existing control system of washing machine, detect the electric current of motor for washer in dehydration and rotating speed, described dewatering control method for washing machine judges clothes dewatering situation according to clothing in washing machine current of electric variable quantity or motor speed variable quantity in dehydration, with the electric current of the adjustment of quantitative manner stage by stage motor or rotating speed, prevent in washing machine tube filled with water the situation that ponding is too much that occurs, in time motor is made adjustment when ensureing that clothes dewatering amount reaches capacity, dehydrating amount stops dehydration in time after reaching target, thus reduce unnecessary running time and avoid too high dehydrating speed, decrease the loss of dewatering time and motor, save power consumption.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described further:
Fig. 1 is control method flow chart of the present invention;
Fig. 2 is the control method flow chart in the embodiment of the present invention 1;
Fig. 3 is the schematic diagram of the motor speed change related in the embodiment of the present invention 1
Fig. 4 is the schematic diagram of the current of electric change related in the embodiment of the present invention 1;
Fig. 5 is that in the embodiment of the present invention 1, in the stage, current of electric changed measurement measures point diagram;
Fig. 6 is the control method flow chart in the embodiment of the present invention 2
Fig. 7 is the schematic diagram of the current of electric change related in the embodiment of the present invention 2;
Fig. 8 is the schematic diagram of the motor speed change related in the embodiment of the present invention 2.
Detailed description of the invention
For convenience of being explained and illustrated each embodiment, first the relation between the rotating speed of the motor for washer related in each embodiment, electric current, Driving Torque and motor load once being introduced, first provides two formula,
Formula 1:T=F × R
Wherein F be motor export driving force and washing machine drum undergarment weight proportional, T be motor export torque, R is the radius of gyration of motor load.
Formula 2: power of motor formula P=U × I=n × K × T
Wherein U is motor operating voltage, the electric current flowed through when I is machine operation, and n is motor speed, and K is constant, and T is the torque that motor exports.
According to formula 1, along with the carrying out of dehydration, clothing moisture declines, and the driving force that required motor exports declines, and the torque that therefore motor exports declines, and draws motor output torque and clothes weight i.e. moisture direct proportionality.
According to formula 2, current of electric follows the product direct proportionality of motor speed and Driving Torque, works as invariablenes turning speed, then current of electric and Driving Torque direct proportionality, when current of electric is constant, then and motor speed and the inversely proportional relation of Driving Torque.
The present invention controls motor by the control system of washing machine, its principle adopts calculating motor output torque to judge laundry machine dehydration process, and then control dehydration, use the control mode that the segmentation stage increases progressively, control method flow chart that can be shown in Figure 1, after starting dehydration, control system detects electric current and the rotating speed of motor in real time, and keep the constant or constant operation of current of electric of motor speed, according to above-mentioned formula, by the electric current of motor that detects or rotating speed conversion motor output torque, when reaching control system and imposing a condition, control system controls quantitatively to improve motor speed or current of electric and keeps constant operation, dehydration is terminated when reaching dehydration termination condition.
Because motor speed is the direct factor affecting dewatering, incremental manner is stage by stage adopted to adjust motor speed when motor speed can prevent from starting to dewater excessive, thus the washing machine tube filled with water inner product water problem caused.According to above-mentioned formula 2, there is proportional relationship with motor speed in current of electric, adjusts current of electric mode can control motor speed equally and prevent starting laundry machine barrel internal water accumulation problem when dewatering by the mode of increasing current stage by stage.
Embodiment 1
See Fig. 2, the flow chart of dehydration controlling method, further detailed description has been done for increasing progressively motor speed stage by stage, after dehydration starts, first detected electric current and the rotating speed of motor in real time by control system, then keep motor speed constant, the variable quantity of current of electric is calculated under the condition that motor speed is constant, when the change of current of electric goes to zero, quantitatively increase progressively motor speed and enter next stage, wherein whether to reach the clothes dewatering rate of setting as dehydration termination condition.When ensureing dehydrating effect, described dehydration termination condition can be one in following condition: the number of increments of total dewatering time of setting, the clothing moisture content of setting, the current of electric number of increments of setting, the motor speed of setting.In the dehydration termination condition enumerated, wherein set clothing moisture content and directly can ensure that dehydrating amount reaches desired value, preferred as present embodiment, before dehydration, user set dehydration after clothing moisture content and preserve in the controls, when moisture content drops to setting value, stop dehydration.
The measuring method of clothing moisture content is: before washing machine dispatches from the factory, the current of electric I1 of the empty bucket of control system record under a constant rotational speed, and calculates the torque T1 preserving motor and export; After user drops into drying thing, control system record containing the current of electric I2 of drying thing under same rotational speed, and calculates the torque T2 preserving motor and export; When dehydration starts, the current of electric I3 of record aqueous laundry under same rotational speed, and calculate the torque T3 preserving motor and export; Calculate the torque that T2 and T1 difference S1 is the life of drying produce, the difference S2 calculating T3 and T1 is the torque that wet wash produces, and the ratio of S2 and S1 is moisture content.Described moisture content is the ratio of aqueous laundry weight and dry clothes weight, and the moisture of clothing is reacted on motor output torque, as long as so the torque phase ratio that torque raw for drying produce and wet wash are produced, according to above-mentioned two formula, under identical motor speed, there is proportional relationship with Driving Torque in current of electric, as long as therefore measure current of electric just can calculate torque.In different motor speed situation, then need the ratio of conversion identical laundry amounts required motor torque under different rotating speeds.
In conjunction with above-mentioned formula 1 and formula 2, as shown in Figure 3 and Figure 4, in same stage, when motor speed keeps constant, current of electric and motor output torque direct proportionality, namely with the moisture direct proportionality of clothing, in moisture decline process, current of electric also declines thereupon, the Driving Torque of motor can be drawn by detecting current of electric, also the moisture situation of clothing can just be drawn, when the current change quantity of motor goes to zero, mean under current motor rotating speed, clothes dewatering amount is close to maximum, clothing moisture content is close to minimum, so need to enter into next stage, namely improve motor speed to continue to keep constant, this mode quantitatively increasing progressively motor speed stage by stage, not only can ensure have suitable motor speed meet dehydrating effect and adjust motor speed in good time in dehydration, save dewatering time, and prevent the speed causing more greatly the drainage speed of washing machine not catch up with moisture disengaging clothing due to motor speed when starting to dewater from occurring the too much ponding situation of tube filled with water.
See Fig. 5, in same stage, measure the current change quantity of motor, its concrete grammar: in the same stage of constant rotational speed, Timing measurement current of electric size, the measurement point of interval same number is a unit with a N continuous current value, calculate the current average of this unit, wherein N be more than or equal to 1 natural number.As shown in Figure 5, respectively at t1, t2, t3, t4 ... t(n-3), t(n-2), t(n-1), the time point of tn records motor current value, calculate the mean value of a N continuous current value, such as, under one, interval measurement point calculates the mean conditions of three continuous current values, first calculate t1, the average current value I1 of t2 and t3 tri-time points, and then calculate t2, the average current value I2 of t3 and t4, I2 deducts the current change quantity that I1 is motor, also can the multiple measurement point calculating mean value in interval, such as when 3 measurement points in interval, first calculate t1, the average current value I3 of t2 and t3 tri-time points, and then t4, the calculating average current value I4 of t5 and t6, I4 deducts the current change quantity that I3 is motor.When calculating current variable quantity, detect the current value itself obtained and there is larger fluctuation, need to adopt the method for averaging to reduce measure error, the mean value that the measurement point of interval same number is got then ensures that mean value subtracts each other the variable quantity obtained and has comparativity.
Embodiment 2
Compare embodiment 1, the principle that the present embodiment adopts is identical, equally also will in dehydration, control system detects electric current and the rotating speed of motor in real time, also uses the mode increased progressively stage by stage, but as shown in Figure 6, in the present embodiment, in same stage, current of electric keeps constant, and the condition that current of electric increases progressively is that the rotation speed change amount of motor in same stage goes to zero.Formula 1 and formula 2 are equally applicable to the present embodiment, according to formula 1 and formula 2, and see Fig. 7 and Fig. 8, motor speed is increase all the time in whole dehydration, because current of electric keeps constant in same stage, mean that the power that motor exports also is constant, so motor speed variable quantity when this current of electric is issued to certain value can go to zero, mean that dehydrating effect is very poor under this electric current, quantitatively increase current of electric and dewater further with expanded motor rotating speed.Compare embodiment 2, because the rotating speed of dehydrating effect directly with motor of washing machine is relevant, therefore, the control method of embodiment 1 is easy to calculate than embodiment 2 and realizes.
Because control method there occurs change, so also need to make survey calculation to the rotation speed change amount of motor accordingly, its principle and the effect played follow the survey calculation of the current change quantity described in embodiment 1 similar, therefore repeat no more, concrete measuring method is only described.
In same stage, the rotation speed change amount of described motor is adopted and is obtained with the following method: control system Timing measurement motor speed size, the measurement point of interval same number, and be the rotating speed mean value that a unit calculates this unit with several measurement points of continuous print, and progressively obtaining the difference of two adjacent cells rotating speed mean values, this difference is the rotation speed change amount of motor.It is pointed out that because motor speed fluctuation of motor current of comparing is less, only can get a measurement point at a unit theoretically, but precision is inadequate equally.
Same, in the present embodiment, dehydration termination condition can be one in following condition: the number of increments of total dewatering time of setting, the clothing moisture content of setting, the current of electric number of increments of setting, the current of electric of setting.As preferably, adopt clothing moisture content to be termination condition, principle is identical with embodiment 1, illustrates that the measuring method of clothing moisture content is in this example: before washing machine dispatches from the factory, the motor speed N1 of the empty bucket of control system record under a constant current, and calculate the torque T1 preserving motor and export; After user drops into drying thing, control system record containing the motor speed N2 of drying thing under same current, and calculates the torque T2 preserving motor and export; When dehydration starts, the motor speed N3 of record aqueous laundry under same current, and calculate the torque T3 preserving motor and export; Calculate the torque that T2 and T1 difference S1 is the life of drying produce, the difference S2 calculating T3 and T1 is the torque that wet wash produces, and the difference S4 of T3 and T1 and the ratio of T2 and T1 difference S3 are moisture content.
Except above preferred embodiment, the present invention also has other embodiment, and those skilled in the art can make various change and adjustment according to the present invention, only otherwise depart from spirit of the present invention, all should belong to the scope that claims of the present invention define.
Claims (8)
1. the intelligent dehydration controlling method of a washing machine, it is characterized in that: dehydration is divided into some stages by control system, the electric current of real-time detection motor and rotating speed, same stage is with the constant operation of motor speed, when the current change quantity of motor goes to zero, control system quantitatively improves motor speed, making motor enter next stage operation, terminating dehydration when reaching the dehydration termination condition of control system setting.
2. the intelligent dehydration controlling method of washing machine according to claim 1, it is characterized in that: the current change quantity of described motor is adopted and obtained with the following method: control system Timing measurement current of electric size, the measurement point of interval same number, and be the current average that a unit calculates this unit with several measurement points of continuous print, and progressively obtaining the difference of two adjacent cells current averages, this difference is the current change quantity of motor.
3. the intelligent dehydration controlling method of washing machine according to claim 1, is characterized in that: described dehydration termination condition is one in following condition: the number of increments of motor speed of total dewatering time of setting, the clothing moisture content of setting and setting.
4. the intelligent dehydration controlling method of washing machine according to claim 3, it is characterized in that: before dehydration, user set dehydration after clothing moisture content and preserve in the controls, when moisture content drops to setting value, stop dehydration, the measuring method of clothing moisture content is: before washing machine dispatches from the factory, the current of electric I1 of the empty bucket of control system record under a constant rotational speed, and calculates the torque T1 preserving motor and export; After user drops into drying thing, control system record containing the current of electric I2 of drying thing under same rotational speed, and calculates the torque T2 preserving motor and export; When dehydration starts, the current of electric I3 of record aqueous laundry under same rotational speed, and calculate the torque T3 preserving motor and export; Calculate the torque that T2 and T1 difference S1 is the life of drying produce, the difference S2 calculating T3 and T1 is the torque that wet wash produces, and the ratio of S2 and S1 is clothing moisture content.
5. the intelligent dehydration controlling method of a washing machine, it is characterized in that: dehydration is divided into some stages by control system, the electric current of real-time detection motor and rotating speed, same stage is with the constant operation of current of electric, when the rotation speed change amount of motor goes to zero, control system quantitatively improves current of electric, making motor enter next stage operation, terminating dehydration when reaching the dehydration termination condition of control system setting.
6. the intelligent dehydration controlling method of washing machine according to claim 5, it is characterized in that: the rotation speed change amount of described motor is adopted and obtained with the following method: control system Timing measurement motor speed size, the measurement point of interval same number, and be the rotating speed mean value that a unit calculates this unit with several measurement points of continuous print, and progressively obtaining the difference of two adjacent cells rotating speed mean values, this difference is the rotation speed change amount of motor.
7. the intelligent dehydration controlling method of washing machine according to claim 5, is characterized in that: described dehydration termination condition is one in following condition: the number of increments of current of electric of total dewatering time of setting, the clothing moisture content of setting and setting.
8. the intelligent dehydration controlling method of washing machine according to claim 7, it is characterized in that: before dehydration, user set dehydration after clothing moisture content and preserve in the controls, when moisture content drops to setting value, stop dehydration, the measuring method of clothing moisture content is: before washing machine dispatches from the factory, the motor speed N1 of the empty bucket of control system record under a constant current, and calculates the torque T1 preserving motor and export; After user drops into drying thing, control system record containing the motor speed N2 of drying thing under same current, and calculates the torque T2 preserving motor and export; When dehydration starts, the motor speed N3 of record aqueous laundry under same current, and calculate the torque T3 preserving motor and export; Calculate the torque that T2 and T1 difference S1 is the life of drying produce, the difference S2 calculating T3 and T1 is the torque that wet wash produces, and the ratio of S4 and S3 is clothing moisture content.
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| GB2585142B (en) * | 2014-04-16 | 2021-03-24 | Fisher & Paykel Healthcare Ltd | Methods and systems for delivering gas to a patient |
| KR102338469B1 (en) * | 2015-01-30 | 2021-12-14 | 삼성전자주식회사 | Washing apparutus and controlling method thereof |
| CN108060549B (en) * | 2016-11-07 | 2021-05-18 | 青岛胶南海尔洗衣机有限公司 | Rinsing method of washing machine |
| CN108866930B (en) * | 2017-05-10 | 2022-08-16 | 无锡小天鹅电器有限公司 | Method and apparatus for controlling dehydration of washing machine, and machine-readable storage medium |
| CN109554885B (en) * | 2017-09-25 | 2021-08-20 | 无锡小天鹅电器有限公司 | Dehydration control method and device for washing machine and washing machine |
| CN109736058B (en) * | 2018-12-27 | 2020-05-26 | 珠海格力电器股份有限公司 | Drying control method and device, storage medium and washing and drying integrated machine |
| CN109736051A (en) * | 2019-03-20 | 2019-05-10 | 海信（山东）冰箱有限公司 | Dehydration controlling method, control device, storage medium and the washing machine of washing machine |
| CN109820462B (en) * | 2019-03-28 | 2021-06-11 | 佛山市百斯特电器科技有限公司 | Method for controlling motor and dish-washing machine |
| CN111253044B (en) * | 2020-04-09 | 2022-06-03 | 刘建津 | Drying granulation control method and vertical drying granulation integrated equipment adopting same |
| CN113622139A (en) * | 2020-05-07 | 2021-11-09 | 青岛海尔滚筒洗衣机有限公司 | Control method of washing machine |
| CN111876964A (en) * | 2020-08-04 | 2020-11-03 | 江苏新安电器股份有限公司 | Dehydration detection device and detection method for washing machine |
| CN112760914B (en) * | 2020-12-29 | 2021-12-03 | 珠海格力电器股份有限公司 | Control method and device for dewatering and drying of washing machine |
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