CN110578236A - Dewatering control method for pulsator washing machine - Google Patents
Dewatering control method for pulsator washing machine Download PDFInfo
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- CN110578236A CN110578236A CN201810604933.XA CN201810604933A CN110578236A CN 110578236 A CN110578236 A CN 110578236A CN 201810604933 A CN201810604933 A CN 201810604933A CN 110578236 A CN110578236 A CN 110578236A
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F39/00—Details of washing machines not specific to a single type of machines covered by groups D06F9/00 - D06F27/00
- D06F39/08—Liquid supply or discharge arrangements
- D06F39/083—Liquid discharge or recirculation arrangements
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Abstract
The invention discloses a dehydration control method for a pulsator washing machine, which belongs to the technical field of washing machines and comprises the following steps: setting a plurality of preset rotating speed values n in the dehydration process of the washing machineiThe predetermined rotation speed value nia target value corresponding to a ramp-up phase or a ramp-down phase; acquiring a working condition signal s of the operation of the washing machine at or near each preset rotating speed value of the washing machine in the process of climbing speedi(ii) a The working condition signal siCorresponding to a limit value si_limitand comparing, and adjusting deviation rectification according to a comparison result. The invention realizes the consideration of different eccentric states, takes effective measures after detecting the over-standard signal, actively controls the abnormal deterioration, and effectively controls the washing machine to finish the dehydration in the best safe state.
Description
Technical Field
the invention relates to the technical field of washing machines, in particular to a dehydration control method for an impeller type washing machine.
Background
The existing pulsator washing machine usually adopts a safety switch (rod) and other devices to detect the abnormal impact of the washing unit on the box body, thereby avoiding serious displacement and damage accidents.
The method is difficult to deal with the complex eccentric condition, particularly the large-capacity pulsator washing machine, and the barrel diameter and the barrel depth of the dehydration barrel of the large-capacity pulsator washing machine are both larger, so that the complex eccentric state is more likely to be generated. The vibration mode of the barrel unit corresponding to the complex eccentric state can be in the form of disturbance around the axis or jumping along the axis or the complex form of the disturbance and the jumping, and the working condition range of the existing detection device is difficult to completely cover the abnormity. In the actual use process, the general problem of low on-load detection capability exists, and the direct consequences are that vibration noise exceeds the standard, barrel collision and displacement and the like cause user loss and complaint.
Disclosure of Invention
The invention aims to provide a dehydration control method of a pulsator washing machine, which is suitable for dehydration control of complex eccentric conditions, particularly large-capacity pulsator washing machines.
in order to achieve the above purpose, the invention adopts a dehydration control method of a pulsator washing machine, which comprises the following steps:
Setting a plurality of preset rotating speed values n in the dehydration process of the washing machineiThe predetermined rotation speed value niA target value corresponding to a creep speed phase or a target value corresponding to a deceleration phase;
acquiring a working condition signal s of the operation of the washing machine at or near each preset rotating speed value of the washing machine in the process of climbing speedi；
The working condition signal siCorresponding to a limit value si_limitAnd comparing, and adjusting deviation rectification according to a comparison result.
Preferably, the method further comprises the following steps:
recording the times of adjusting and correcting the deviation, and comparing the times of adjusting and correcting the deviation with the limited times in real time;
And when the number of times of adjusting deviation rectification is greater than the limited number of times, performing abnormal alarm on the washing machine.
Preferably, the working condition signal comprises a collected value in a climbing speed stage and a collected value in a stable rotating speed stage.
Preferably, the limit values are determined by testing the platform characteristics and the actual operation condition of the washing machine in advance, and include instantaneous values and interval calculation values.
Preferably, the adjusting and correcting process according to the comparison result includes:
Under the working condition signal siExceeding the corresponding limit value si_limitAccording to the working condition signal siPerforming identification, wherein the identification result comprises excessive eccentricity or excessive foam;
And performing water supplementing shaking or water inlet defoaming treatment according to the identification result.
Compared with the prior art, the invention has the following technical effects: the invention collects relevant signals at different stages of the washing machine dehydration, and sets signal limit values corresponding to the signals collected at different stages in advance, wherein the signal limit values represent the condition that the working condition corresponding to the signals at different stages is abnormal and approaches the corresponding condition of the critical state, and the abnormal states comprise eccentricity exceeding, abnormal suspension system, excessive foam and the like. The actual load eccentric state of the washing machine is judged by comparing the collected signals in different stages with corresponding limit values, and further the subsequent concrete actions of deviation correction, dehydration and the like of the washing machine are determined. The invention realizes the consideration of different eccentric states, takes effective measures after detecting the over-standard signal, actively controls the abnormal deterioration, and effectively controls the washing machine to finish the dehydration in the best safe state.
Drawings
The following detailed description of embodiments of the invention refers to the accompanying drawings in which:
FIG. 1 is a flow chart of a dehydration control method for a pulsator washing machine;
FIG. 2 is a state diagram of the rotational speed of a typical dehydration process;
FIG. 3 is a schematic signal acquisition diagram of the exemplary dehydration process of FIG. 2;
fig. 4 is a schematic diagram of a dewatering process control logic of the washing machine.
Detailed Description
To further illustrate the features of the present invention, refer to the following detailed description of the invention and the accompanying drawings. The drawings are for reference and illustration purposes only and are not intended to limit the scope of the present disclosure.
As shown in fig. 1, the present embodiment discloses a dewatering control method for a pulsator washing machine, which includes the following steps S1 to S3:
S1, setting a plurality of preset rotating speed values n in the dewatering process of the washing machineiThe predetermined rotation speed value niA target value corresponding to a creep speed phase or a target value corresponding to a deceleration phase;
It should be noted that the washing machine needs to go through different times of stable rotation speed, several climbing speed and speed reduction stages when dewatering.
S2, obtaining operating condition signal S of the washing machine in each preset rotating speed value or the adjacent climbing speed process of the washing machinei；
It should be noted that the climbing or decelerating stage corresponding to the predetermined rotation speed value is specifically determined by the operation condition, the condition signal includes a speed signal, a power signal, an acceleration signal and the like which can be used for calibrating the actual condition of the washing machine, and the motor or the sensor can record the real-time condition signal and feed the real-time condition signal back to the computer board for decision making during the dehydration operation of the washing machine. .
s3, converting the working condition signal SiCorresponding to a limit value si_limitAnd comparing, and adjusting deviation rectification according to a comparison result.
It should be noted that the limit value si_limitThe condition that the working conditions corresponding to the signals in different stages are abnormal and close to the critical state is represented. Moreover, each condition signal may correspond to a different limit at different stages of the dehydration operation.
Further, the working condition signal comprises a collected value in a climbing speed stage and a collected value in a stable rotating speed stage. As shown in FIG. 2, the working condition signals are collected during the dehydration starting acceleration to n2, the working condition signals are collected during the n1 stable rotating speed stage, the working condition signals are collected during the climbing from n1 to n3, and the working condition signals are collected during the n3 stable rotating speed stage.
Further, a limit value si_limitThe limit values include instantaneous values and interval calculation values for the purpose of testing and determining the platform characteristics and the actual operation conditions of the washing machine in advance. For example, as shown in fig. 2, during the stage from the climbing speed of n1 to n3, the calculated value of the operating condition signal in the time period of T0 is selected and compared with the corresponding limit value to determine the actual operation of the washing machineAbnormal inter-eccentricity, etc. And for example, the instantaneous value of the collected working condition signal is compared with a limit value in the stable rotating speed stage of n3, and once the limit value is exceeded, the abnormality is judged and the adjustment or subsequent treatment is carried out.
Further, in the above step S3: will carry on the adjustment according to the result of comparison and rectify and process, including:
Under the working condition signal siExceeding the corresponding limit value si_limitAccording to the working condition signal siPerforming identification, wherein the identification result comprises excessive eccentricity or excessive foam;
And performing water supplementing shaking or water inlet defoaming treatment according to the identification result.
It should be noted that the limit value is set by referring to the working condition signal value of the critical state and the actual control target in the found critical states of normal and failure based on the test result of the actual product platform, and a considerable safety margin is ensured. But the limit value should have platform universality, i.e. not influence with the difference between models and the randomness of the actual working condition.
further, in the above step S3: the working condition signal siCorresponding to a limit value si_limitComparing, and adjusting deviation rectification according to the comparison result, and then:
Recording the times of adjusting and correcting the deviation, and comparing the times of adjusting and correcting the deviation with the limited times in real time;
And when the number of times of adjusting deviation rectification is greater than the limited number of times, performing abnormal alarm on the washing machine.
it should be noted that the limited number is an upper limit value which is obtained through a lot of experimental verification by a technician and is used for comparing with the adjusted deviation correcting number.
the abnormal alarm of the washing machine comprises an eccentric barrel collision alarm, a barrel jumping and shifting alarm, an over-foam alarm and the like. The mode of triggering the abnormal alarm comprises triggering the display of a mechanical switch structure or triggering the abnormal alarm through a software algorithm and the like. The alarm is given when the deviation correcting times are larger than the limited times, so that the user is prompted to perform manual intervention, and dangerous events are avoided.
Referring to fig. 3 to 4, the signal acquisition and control of the whole dewatering process of the washing machine at different stages are specifically described:
Example 1
At the stage of starting the climbing speed to n2, continuously acquiring a signal s1 of the climbing speed stage according to the dewatering process shown in fig. 3, if s1 exceeds the limit, adding 1 to the adjustment times m0, and if the accumulated adjustment times is less than the limit value m, reducing the speed and entering an adjustment program.
if s1 does not exceed the limit, the climbing speed reaches n3, signals s2 are collected at the later stage of the climbing speed, if s2 exceeds the limit, the adjustment times m0 are added with 1, the accumulated adjustment times are smaller than a limit value m, and the speed is reduced to enter an adjustment program.
If s2 is not overrun, continuously running at n3, and simultaneously acquiring a signal s3, if s3 is overrun, adding 1 to the adjustment number m0, and if the accumulated adjustment number is smaller than a limit value m, reducing the speed and entering an adjustment program.
If s3 is not over-limited, the speed climbs to n4 and runs stably at n4, signals s4 and s5 are collected, if s4 or s5 is over-limited, the adjustment times m0 is added with 1, the accumulated adjustment times is smaller than a limit value m, and the speed is reduced to enter an adjustment program.
If s4 and s5 do not exceed the limit, the subsequent dehydration process is carried out until the end.
The adjustment program sets the limit number of times as m, and if the adjustment number of times m0 is less than m, the adjustment is continued when the overrun occurs. And if the number m0 of times of adjustment is equal to m when the exceeding limit occurs, displaying an abnormal alarm.
Example 2
when the washing is finished, the water is drained and then the water is dewatered, eccentricity is detected through the pulse (the stage of climbing to 100 rpm) and the climbing process shown in the figure 3, when the rotating speed reaches n4 and is maintained, the signal value s5 exceeds the limit value, the situation that the bubble is possibly high is judged, the elution is finished, and the drained water enters a rinsing program.
When the rinsing is finished and the water is drained and then the water is dewatered, eccentricity is detected through the pulse (the stage of climbing speed to 100 rpm) and the climbing speed process shown in the figure 3, in the process of climbing speed to n3, the signal value s2 exceeds the limit value, the possibility of eccentricity abnormity is judged, the rinsing is finished, and the drained water enters a secondary rinsing program.
After the second rinsing is finished and water is drained, when the first pulse (the stage of climbing to 100 rpm) is detected, the signal value s1 exceeds the limit value; after the deceleration is stopped, the pulse detection for the second time (the stage of the creep speed to 100 rpm) is carried out again, and the signal value s1 still exceeds the limit value; and (4) reducing the speed, accumulating the adjustment times m0 by 1, performing water supplementing and deviation rectifying when m0 is less than m (the set allowable adjustment times) after accumulation, and entering the final dehydration process again after the deviation rectifying is finished.
when the final dehydration is accelerated to the stage n4, the signal value s5 exceeds the limit value, the deceleration is stopped, the adjustment times m0 are accumulated by 1, when the accumulated m0 is smaller than m (the set allowable adjustment times), water is drained while water is fed for defoaming, and the final dehydration process is started again after defoaming.
Signal value s of each stage of dehydration processiunder the condition that the water is not out of standard, the water is run to the highest speed according to the complete curve shown in figure 3 and the whole dehydration process is finished.
according to the embodiment, the limit values of different stages of the dewatering process of the washing machine are determined in advance according to tests, after the limit values are obtained and set, the dewatering working condition signals of the washing machine collected in real time are compared and judged with the corresponding limit values, effective deviation rectifying measures can be taken after the standard exceeding signals are detected, the control of the complete dewatering process is realized, and the method is suitable for the pulsator washing machine with complex eccentric conditions.
the above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (5)
1. a dehydration control method of a pulsator washing machine is characterized by comprising the following steps:
Setting a plurality of preset rotating speed values n in the dehydration process of the washing machineiThe predetermined rotation speed value niA target value corresponding to a creep speed phase or a target value corresponding to a deceleration phase;
Acquiring a working condition signal s of the operation of the washing machine at or near each preset rotating speed value of the washing machine in the process of climbing speedi；
The working condition signal siCorresponding to a limit value si_limitAnd comparing, and adjusting deviation rectification according to a comparison result.
2. The dehydration control method of a pulsator washing machine according to claim 1, further comprising:
Recording the times of adjusting and correcting the deviation, and comparing the times of adjusting and correcting the deviation with the limited times in real time;
And when the number of times of adjusting deviation rectification is greater than the limited number of times, performing abnormal alarm on the washing machine.
3. the dehydration control method of a pulsator washing machine according to claim 1, wherein the operation signals include a collection value in a climbing speed stage and a collection value in a stable rotation speed stage.
4. the spin-drying control method of pulsator washing machine as claimed in claim 1, wherein the limit value si_limitThe limit values include instantaneous values and interval calculation values for the purpose of testing and determining the platform characteristics and the actual operation conditions of the washing machine in advance.
5. The dehydration control method of a pulsator washing machine according to claim 1, wherein the adjusting and rectifying process according to the comparison result comprises:
under the working condition signal siExceeding the corresponding limit value si_limitAccording to the working condition signal siPerforming identification, wherein the identification result comprises excessive eccentricity or excessive foam;
and performing water supplementing shaking or water inlet defoaming treatment according to the identification result.
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| CN201810604933.XA CN110578236A (en) | 2018-06-11 | 2018-06-11 | Dewatering control method for pulsator washing machine |
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| CN201810604933.XA CN110578236A (en) | 2018-06-11 | 2018-06-11 | Dewatering control method for pulsator washing machine |
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| CN101736553A (en) * | 2009-12-04 | 2010-06-16 | 合肥荣事达三洋电器股份有限公司 | Method for detecting dehydration imbalance of inclined drum washing machine |
| JP2013188332A (en) * | 2012-03-14 | 2013-09-26 | Hitachi Appliances Inc | Washing machine |
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