CN102260984B - Control method for washing machine and washing machine thereof - Google Patents
Control method for washing machine and washing machine thereof Download PDFInfo
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- CN102260984B CN102260984B CN201110208254.9A CN201110208254A CN102260984B CN 102260984 B CN102260984 B CN 102260984B CN 201110208254 A CN201110208254 A CN 201110208254A CN 102260984 B CN102260984 B CN 102260984B
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Abstract
A kind of control method for washing machine, described washing machine comprise housing, urceolus, hold clothing cylinder, for the draining pump of draining, for detecting the condensate tank of dehumidifier of the water yield, described control method comprises washing procedure, rinsing program, dehydration procedure, wherein dehydration procedure is divided into drainage procedure and dehydration, in drainage procedure, load detecting is carried out to draining pump and controls the detection control process of draining pump switch motion according to testing result.When draining pump electric current generation saltus step, difference reaches setting numerical value △ I, stops the draining pump working time, dwell time T or after detecting that water level exceeds minimum setting value, continue draining and detection, so circulated dehydration procedure.The invention still further relates to and use the method washing machine, the present invention is by improving control program and circuit, and structure is simple, and cost is low, easily realizes, and effectively solves the large problem of washing machine noise, meets consumers' demand, more hommization.
Description
Technical field
The present invention relates to a kind of control method for washing machine, particularly relate to the control method of the reduction drainage noise of roller washing machine and use the washing machine of the method.
Background technology
Domestic electric washer is divided into pulsator washing machine, roller washing machine, stirring washing machine, and roller washing machine is applied to Europe the earliest, along with the change of people's level of consumption and idea, roller washing machine also more and more widely accept by Asia people.Simultaneously along with the continuous improvement of social living environment, improving constantly of washing machine user family life quality, quiet living environment is more and more subject to everybody attention.Family's electric noise has also become one of major issue that each household electrical appliances manufacturer solves, and wherein the quiet index of washing machine is improving constantly.
Roller washing machine all adopts drainage pattern, and the water in cylinder is by outside draining pump, drainpipe discharge machine.When draining, draining pump is subject to the circulation noise that water impact in water pipe produces " drone---drone " and cannot not thoroughly solves.After water in roller washing machine is emptying, because draining pump has the lift of about 1.2 meters, the water of this section of water pipe internal memory cannot be discharged, on the contrary under gravity, constantly impact drain pump impeller downwards, thrown away by impeller again, so just cause the noise of " drone-drone ", existing low side washing machine all adopts water level switch device, draining pump can only work in whole drying process always, even if having employed level sensor on high-end washing machines, though lowest water level can be determined when low water level, stop draining pump work.But the signal of sensor usually can be interfered and drift about, and very easily judges by accident, its result or still have noise, otherwise draining is clean, can not meet the low noise demand of user.
Summary of the invention
The present invention is based on above-mentioned defect of the prior art, provide a kind of control method and washing machine, detect draining pump load, master controller MCU judges that the change of load starts or stops work to control draining pump, effectively reduces washing machine noise.
In order to realize the object of the invention, the present invention adopts following technical scheme:
A kind of control method for washing machine, described washing machine comprise housing, urceolus, hold clothing cylinder, for the draining pump of draining, for detecting the condensate tank of dehumidifier of the water yield, described control method comprises washing procedure, rinsing program, dehydration procedure, wherein dehydration procedure is divided into drainage procedure and dehydration, in drainage procedure, load detecting is carried out to draining pump and controls the detection control process of draining pump switch motion according to testing result.
Described draining pump load detecting detects the current value of draining pump, and when described condensate tank of dehumidifier adopts water level pressure switch, described detection control process comprises the following steps:
A, draining, detect draining pump electric current and detected value be sent to MCU, and current value I0 during record draining pump full load is as initial value;
B, continuation draining, MCU carries out monitoring record to draining pump electric current, when draining pump electric current generation saltus step, record current value In;
C, MCU judge that the difference of In-I0 reaches setting numerical value △ I, stop draining pump work T time;
D, repetition B, to step C, when water discharge time reaches the program setting time, complete draining and enter dehydration.
In described step C, the scope of △ I value is at 0.01A-0.02A;
Draining pump working time T is stopped to be 3 seconds-20 seconds according to program setting in described step C; Or in described step C, dwell time T is set as that first time T1 is 3 seconds-5 seconds, and dwell time subsequently is successively progressively increased.
Another technical scheme of control method for washing machine of the present invention, described draining pump load detecting detects the current value of draining pump, when described condensate tank of dehumidifier adopts level sensor, the water level lower limit that in program, designated water level sensor detects, described detection control process comprises the following steps:
S1, draining, detect draining pump electric current and detected value be sent to MCU, and current value I0 during record draining pump full load is as initial value;
S2, continuation draining, MCU carries out monitoring record to draining pump electric current, when level sensor detects the water level lower limit of water level lower than setting, during the generation saltus step of draining pump electric current, record current value In;
S3, MCU judge that the difference of In-I0 reaches setting numerical value △ I, stop draining pump work;
When S4, level sensor detect that water level exceeds lower limit, repeat S2, S3 step;
S5, when water discharge time reaches the program setting time, complete draining and enter dehydration.
In described S3 step, the scope of △ I value is at 0.01A-0.02A.
Another technical scheme of control method for washing machine of the present invention, described draining pump load detecting is undertaken by condensate tank of dehumidifier sensed water level, the water level lower limit that designated water level sensor detects, is characterized in that, set described detection control process and comprise the following steps:
P1, draining, condensate tank of dehumidifier sensed water level, and water level signal value is sent to master controller MCU;
P2, continuation draining, when condensate tank of dehumidifier detects water level lower than lower limit, master controller MCU receives signal, continues energising run 1 second-5 seconds t time to draining pump, then stops draining pump work T time 3 seconds-20 seconds;
P3, repetition P2 step, when water discharge time reaches the time of program setting, stop draining entering dehydration.
The invention still further relates to a kind of washing machine, comprise housing, urceolus, hold clothing cylinder, for the draining pump of draining, for detecting the condensate tank of dehumidifier of the water yield, also comprise draining pump current detection circuit, electric current is converted to the change-over circuit of voltage value, in drainage procedure, carry out current detecting to draining pump and signal is converted into voltage value being transported in master controller MCU, MCU controls draining pump switch motion according to the hop value of draining pump electric current.
The hop value of described draining pump electric current is when 0.01A-0.02, master controller MCU stops draining pump work, when dwell time reaches 3-20 second, or when condensate tank of dehumidifier detects that water level exceeds the lower limit of setting, continue draining action, circulation like this, water discharge time enters into dehydration after reaching the program setting time.
By adopting above-mentioned technical scheme, washing machine manufacturer changes a little main control and gets final product practical function, and draining pump load judgment is accurate, not by external interference, does not stay residual water also not produce noise.Realize low cost noise reduction, solve noise in laundry processes and bother the problem of consumer, hommization more.
Accompanying drawing explanation
Fig. 1 is the embodiment of the present invention one draining control flow chart when using water level switch;
Fig. 2 is the embodiment of the present invention two draining control flow chart when using level sensor;
Fig. 3 is the embodiment of the present invention three another way draining control flow chart when using level sensor;
Fig. 4 is washing machine drainage control circuit figure of the present invention.
Detailed description of the invention
Below in conjunction with accompanying drawing, the washing machine of control method for washing machine provided by the invention and use the method is described in detail.Control method for washing machine, described washing machine comprise housing, urceolus, hold clothing cylinder, for the draining pump of draining, for detecting the condensate tank of dehumidifier of the water yield, described control method comprises washing procedure, rinsing program, dehydration procedure, wherein dehydration procedure is divided into drainage procedure and dehydration, in drainage procedure, load detecting is carried out to draining pump and controls the detection control process of draining pump switch motion according to testing result.
See Fig. 1, embodiments of the invention one are shown, water discharge control method during washing machine use water level pressure switch.The course of work of water level pressure switch controlling water level: when water is more in laundry machine barrel, draining pump is operated at full capacity, and the noise of generation is also little, now electric current is larger, master controller reads current value I0 now, as the current value of draining pump full load, and is recorded in master controller MCU.After water in cylinder is emptying, draining pump load suddenly disappears, master controller MCU can detect that the electric current of pump motor has a saltus step from I0 to In, through software process, determine that the errorless rear master controller MCU of signal stops draining pump work, a small amount of residual water now in drainpipe can be back in cylinder, can not produce impact with water pump blade, avoids the noise of " drone--drone ".
Draining pump quits work after a period of time T, time T can be decided to be the mode of 3-20 second according to program, also mode progressively cumulative between 3-20 second can be taked, such as, after first time stops, because load cloth contains more water, urceolus is thrown to from inner core along with inner core rotating speed improves large water gaging, so dwell time is short, be set to 3-5 second according to washing machine capacity size, then draining pump is reworked and water is discharged.When in drainage procedure, the electric current I n that master controller monitors saltus step again, after second time stops, now most of water is discharged, dwell time can proper extension to 5-8 second, then draining pump is reworked until next stop signal produces.Circulation like this is carried out.Until water discharge time reaches the time of program setting, drainage procedure completes and enters into dehydration.
See Fig. 2, embodiments of the invention two are shown, washing machine uses level sensor water discharge control method constantly.The course of work: draining, detects draining pump electric current and detected value is sent to MCU, and current value I0 during record draining pump full load is as initial value; Continue draining, MCU carries out monitoring record to draining pump electric current, when level sensor detects the water level lower limit of water level lower than setting, during the generation saltus step of draining pump electric current, and record current value In; MCU judges that the difference of In-I0 reaches setting numerical value △ I, stops draining pump work; When level sensor detects that water level exceeds lower limit, namely when water level reach that sensor can detect high time, draining pump is started working, and continues draining, does not need to set dwell time based on experience value again.When water discharge time reaches the program setting time, complete draining and enter dehydration.
In above embodiment one, embodiment two, measured current change is at 0.01A-0.02A, and such as, during draining pump operation at full load, electric current is 0.205-0.2A, and saltus step after-current becomes 0.195-0.188A.
See Fig. 3, the kind control method for washing machine described in the embodiment of the present invention three is shown, not with draining pump load detecting example.When draining, when water level drop to minimum after, the low detection range to exceeding level sensor, detected value is 0, and master controller stops draining pump work, but considers the situation that residual water in cylinder is more, can set detected value is after 0, draining pump prolongation work 1-5 second, water is just got rid of completely and is not produced the node of noise, stops draining.This time extended can the model machine of rule of thumb data and different capabilities structure be determined, after sensor detects that water level rises, again opens draining pump draining, so circulates, do not need to set dwell time.
The invention still further relates to a kind of washing machine, comprise housing, urceolus, hold clothing cylinder, for the draining pump of draining, for detecting the condensate tank of dehumidifier of the water yield, also comprise draining pump current detection circuit, electric current is converted to the change-over circuit of voltage value, in drainage procedure, carry out current detecting to draining pump and signal is converted into voltage value being transported in master controller MCU, MCU controls draining pump switch motion according to the hop value of draining pump electric current.The hop value of described draining pump electric current is when 0.01A-0.02A, master controller MCU stops draining pump work, when dwell time reaches 3-20 second, or when condensate tank of dehumidifier detects that water level exceeds the lower limit of setting, continue draining action, circulation like this, water discharge time enters into dehydration after reaching the program setting time.See Fig. 4 illustrate washing machine circuit controling drawing of the present invention, time m-current diagram.In Fig. 4, L line is 220V live wire, and N line is zero line.Other opening main circuit L line is connected to other components and parts.2003 chips are amplifying circuits, master controller MCU export be 5V voltage, after 2003 chips, become 12V, can Direct driver PUMP hold controlled silicon conducting, i.e. draining pump turn-on current.In Fig. 4, the loop on right side current signal I is converted into voltage signal be input to MCU master controller, inner through AD conversion analog signal conversion digital signal at master controller, becomes the data signal that master controller software can identify and process.
In sum, by adopting above-mentioned technical scheme, the main control of washing machine being carried out a little to the change of low cost, can dewatering and noise reduction functions be realized.Draining pump load judgment is accurate, not by external interference, does not stay residual water also not produce noise, does not also affect drainage performance, solve the complaint that user is large to noise, hommization more.
Certainly, the present invention is not limited to above-mentioned citing, the technical scheme that it will be apparent to those skilled in the art that, without departing from the spirit or scope of the present invention, various amendment is made to the present invention and changes in the claims in the present invention and equivalent scope of replacing thereof, this control method is not only applicable to roller washing machine, and be also applicable to the rotary drum washing machine of drainage belt draining pump simultaneously, stir washing machine, then such amendment and change are contained in the present invention.
Claims (7)
1. a control method for washing machine, described washing machine comprises housing, urceolus, hold the cylinder of clothing, for the draining pump of draining, for detecting the condensate tank of dehumidifier of the water yield, described control method comprises washing procedure, rinsing program, dehydration procedure, wherein dehydration procedure is divided into drainage procedure and dehydration, in drainage procedure, load detecting is carried out to draining pump and controls the detection control process of draining pump switch motion according to testing result, it is characterized in that, described draining pump load detecting detects the current value of draining pump, when described condensate tank of dehumidifier adopts water level pressure switch, described detection control process comprises the following steps:
A, draining, detect draining pump electric current and detected value be sent to master controller MCU, and current value I0 during record draining pump full load is as initial value;
B, continuation draining, master controller MCU carries out monitoring record to draining pump electric current, when draining pump electric current generation saltus step, record current value In;
C, master controller MCU judge that the difference of In-I0 reaches setting numerical value △ I, and stop draining pump work T time, the scope of △ I value is at 0.01A-0.02A;
D, repetition B, to step C, when water discharge time reaches the program setting time, complete draining and enter dehydration.
2. control method for washing machine according to claim 1, is characterized in that, stops draining pump working time T to be 3 seconds-20 seconds according to program setting in described step C.
3. control method for washing machine according to claim 2, is characterized in that, in described step C, dwell time T is set as that first time T1 is 3 seconds-5 seconds, and dwell time subsequently is successively progressively increased.
4. a control method for washing machine, described washing machine comprises housing, urceolus, hold the cylinder of clothing, for the draining pump of draining, for detecting the condensate tank of dehumidifier of the water yield, described control method comprises washing procedure, rinsing program, dehydration procedure, wherein dehydration procedure is divided into drainage procedure and dehydration, in drainage procedure, load detecting is carried out to draining pump and controls the detection control process of draining pump switch motion according to testing result, it is characterized in that, described draining pump load detecting detects the current value of draining pump, when described condensate tank of dehumidifier adopts level sensor, the water level lower limit that in program, designated water level sensor detects, described detection control process comprises the following steps:
S1, draining, detect draining pump electric current and detected value be sent to MCU, and current value I0 during record draining pump full load is as initial value;
S2, continuation draining, MCU carries out monitoring record to draining pump electric current, when level sensor detects the water level lower limit of water level lower than setting, during the generation saltus step of draining pump electric current, record current value In;
S3, MCU judge that the difference of In-I0 reaches setting numerical value △ I, stop draining pump work;
When S4, level sensor detect that water level exceeds lower limit, repeat S2, S3 step;
S5, when water discharge time reaches the program setting time, complete draining and enter dehydration.
5. control method for washing machine according to claim 4, is characterized in that, in described S3 step, the scope of △ I value is at 0.01A-0.02A.
6. a control method for washing machine, described washing machine comprises housing, urceolus, hold the cylinder of clothing, for the draining pump of draining, for detecting the condensate tank of dehumidifier of the water yield, described control method comprises washing procedure, rinsing program, dehydration procedure, wherein dehydration procedure is divided into drainage procedure and dehydration, in drainage procedure, load detecting is carried out to draining pump and controls the detection control process of draining pump switch motion according to testing result, it is characterized in that, described draining pump load detecting is undertaken by condensate tank of dehumidifier sensed water level, the water level lower limit that designated water level sensor detects, it is characterized in that, set described detection control process to comprise the following steps:
P1, draining, condensate tank of dehumidifier sensed water level, and water level signal value is sent to master controller MCU;
P2, continuation draining, when condensate tank of dehumidifier detects water level lower than lower limit, master controller MCU receives signal, continues energising run 1 second-5 seconds t time to draining pump, then stops draining pump work T time 3 seconds-20 seconds;
P3, repetition P2 step, when water discharge time reaches the time of program setting, stop draining entering dehydration.
7. a washing machine, comprise housing, urceolus, hold the cylinder of clothing, for the draining pump of draining, for detecting the condensate tank of dehumidifier of the water yield, also comprise draining pump current detection circuit, electric current is converted to the change-over circuit of voltage value, in drainage procedure, carry out current detecting to draining pump and signal be converted into voltage value being transported in master controller MCU, MCU controls draining pump switch motion according to the hop value of draining pump electric current, it is characterized in that, the hop value of described draining pump electric current is when 0.01A-0.02A, master controller MCU stops draining pump work, when dwell time reaches 3-20 second, or when condensate tank of dehumidifier detects that water level exceeds the lower limit of setting, continue draining action, circulation like this, water discharge time enters into dehydration after reaching the program setting time.
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Families Citing this family (12)
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| CN102817214B (en) * | 2012-08-08 | 2017-04-05 | 青岛海尔滚筒洗衣机有限公司 | A kind of drainage system and its control method for reducing washing machine drainage noise |
| CN104099756B (en) * | 2013-04-15 | 2018-02-23 | 青岛海尔滚筒洗衣机有限公司 | A kind of control method and its washing machine of integrated control draining pump |
| CN104980067B (en) * | 2014-04-11 | 2018-01-30 | 常州雷利电机科技有限公司 | Draining pump DC Brushless Motor system and its control method and control device |
| CN104178972B (en) * | 2014-08-14 | 2017-02-15 | 松下家电研究开发（杭州）有限公司 | Dehydration control method for clothing treatment device and clothing treating device thereof |
| US10595703B2 (en) * | 2015-11-10 | 2020-03-24 | Electrolux Appliances Aktiebolag | Method of determining whether process water is present in a circulation pump of an appliance for washing and rinsing goods, and appliance and computer program therewith |
| CN105506919B (en) * | 2016-01-28 | 2017-11-17 | 珠海格力电器股份有限公司 | Dehydration controlling method and washing machine |
| 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 |
| CN107190481B (en) * | 2017-04-25 | 2020-02-21 | 无锡飞翎电子有限公司 | Washing machine and draining pump system thereof |
| CN108978119B (en) * | 2017-06-01 | 2022-05-06 | 青岛海尔洗衣机有限公司 | Dewatering method for washing machine |
| CN112095285B (en) * | 2019-05-30 | 2024-05-28 | 青岛海尔洗衣机有限公司 | Dewatering control method of washing machine and washing machine |
| CN112877994A (en) * | 2021-01-04 | 2021-06-01 | 珠海格力电器股份有限公司 | Control method for reducing dewatering noise of washing machine |
| CN114232280A (en) * | 2021-12-13 | 2022-03-25 | 珠海格力电器股份有限公司 | Dewatering control method of washing machine and washing machine |
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