CN111434831A - Control method for eccentric state of washing machine and washing machine - Google Patents
Control method for eccentric state of washing machine and washing machine Download PDFInfo
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- CN111434831A CN111434831A CN201811594233.3A CN201811594233A CN111434831A CN 111434831 A CN111434831 A CN 111434831A CN 201811594233 A CN201811594233 A CN 201811594233A CN 111434831 A CN111434831 A CN 111434831A
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- 238000005406 washing Methods 0.000 title claims abstract description 68
- 238000000034 method Methods 0.000 title claims abstract description 64
- 230000003068 static effect Effects 0.000 claims abstract description 38
- 230000005856 abnormality Effects 0.000 claims description 2
- 238000001035 drying Methods 0.000 description 9
- 230000002159 abnormal effect Effects 0.000 description 3
- 208000005156 Dehydration Diseases 0.000 description 2
- 230000009194 climbing Effects 0.000 description 2
- 230000018044 dehydration Effects 0.000 description 2
- 238000006297 dehydration reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010981 drying operation Methods 0.000 description 1
- 230000008707 rearrangement Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
The invention discloses a control method of an eccentric state of a washing machine and the washing machine, and relates to the technical field of washing machines. The control method comprises the following steps: s1, controlling the rotating speed of the motor to be at a first preset rotating speed, and executing S2 after keeping the rotating speed for T1; s2, increasing the rotating speed of the motor to a second preset rotating speed, judging whether the washing machine meets the static eccentricity condition, and if so, executing S3; and S3, increasing the rotating speed of the motor to a third preset rotating speed, judging whether the washing machine meets the dynamic eccentric condition, and returning to S1 if the washing machine does not meet the dynamic eccentric condition. The washing machine adopts the control method of the eccentric state. The control method of the eccentric state of the washing machine can accurately judge and change the eccentric state of the drum; the washing machine has higher dewatering efficiency and high reliability.
Description
Technical Field
The invention relates to the technical field of washing machines, in particular to a control method of an eccentric state of a washing machine and the washing machine.
Background
With the development of the technology of the washing machine, a user pays attention to the problem of overlarge noise during high-speed rotation of the washing machine in the dehydration stage, and the washing machine which rotates at a high speed and is quieter is favored by consumers more and more. At present, in the dewatering process of a washing machine, it is generally necessary to detect the eccentric state of a drum before high-speed rotation, and determine whether the eccentric state of the drum can be rotated at high speed, so as to avoid large noise caused by large eccentricity. The eccentric state of the washing machine is divided into a static eccentricity (OOB) and a dynamic eccentricity (DOOB). Static eccentricity is usually the eccentricity value tested after the washing machine is stabilized at a lower rotating speed, and dynamic eccentricity is usually the eccentricity value tested during the process of climbing to a higher rotating speed. Even if the static eccentricity detection is qualified, the dynamic eccentricity is also possibly unqualified in the rotating speed climbing process, and larger noise is caused. The essential reason of the noise is abnormal sound generated by the eccentricity of the drum, and the larger the noise is, the more possible damage to the mechanical structure is caused at the moment, even the problem of drum collision and the like occurs, and the washing machine is directly damaged, so before the high-speed spin-drying, whether the static eccentricity and the dynamic eccentricity meet the requirements or not must be detected, and the spin-drying can be carried out at a high speed only if the eccentricity state of the drum is good.
The prior art discloses methods for measuring static eccentricity and dynamic eccentricity, wherein after a static eccentricity condition is judged to be qualified, the next step is carried out to judge whether the dynamic eccentricity condition is qualified, and if the static eccentricity condition is not qualified, the dynamic eccentricity condition is returned to judge again. The method can not change the eccentric distribution state of the roller at the moment all the time, so that the static eccentric condition judgment is qualified all the time, the dynamic eccentric condition judgment is unqualified all the time, and then the static eccentric condition judgment is returned, so that the judgment method enters into a dead cycle.
Disclosure of Invention
In view of the above problems, an object of the present invention is to provide a method for controlling an eccentric state of a washing machine, which can accurately determine and change the eccentric state of a drum.
Another object of the present invention is to provide a washing machine with higher dewatering efficiency and high reliability.
The invention adopts the following technical scheme:
a control method of an eccentric state of a washing machine includes the following steps:
s1, controlling the rotating speed of the motor to be at a first preset rotating speed, and executing S2 after keeping the rotating speed for T1;
s2, increasing the rotating speed of the motor to a second preset rotating speed, judging whether the washing machine meets the static eccentricity condition, and if so, executing S3;
and S3, increasing the rotating speed of the motor to a third preset rotating speed, judging whether the washing machine meets the dynamic eccentric condition, and returning to S1 if the washing machine does not meet the dynamic eccentric condition.
In a preferred embodiment of the present invention, in step S2, if it is determined that the washing machine does not satisfy the static eccentricity condition, the process returns to step S1.
In a preferred embodiment of the present invention, in step S2, if it is determined that the static eccentricity condition is not met N consecutive times, S4 is executed, where N is a natural number equal to or greater than 3,
and S4, controlling the rotation speed of the motor to be at a fourth preset rotation speed, and keeping the rotation speed until the program is finished.
In a preferred embodiment of the present invention, in step S3, if it is determined that the dynamic eccentricity condition is satisfied, S5 is executed,
and S5, keeping the rotating speed of the lifting motor at a fifth preset rotating speed until the program is ended.
As a preferable embodiment of the present invention, in step S3, if M consecutive times, where M is a natural number equal to or greater than 2, are judged not to comply with the dynamic eccentricity condition, the routine is terminated.
As a preferable aspect of the present invention, the static eccentricity condition and the dynamic eccentricity condition are both determined based on electric power of a motor; the electric power is calculated by multiplying a voltage of the motor by a current, and the voltage and the current of the motor are both obtained by reading a driving plate of the motor.
As a preferable aspect of the present invention, the fourth preset rotation speed is smaller than the third preset rotation speed.
As a preferable scheme of the present invention, the first preset rotation speed is any one of 25 rpm to 35 rpm, the second preset rotation speed is any one of 80 rpm to 100 rpm, the third preset rotation speed is any one of 380 rpm to 420 rpm, the fourth preset rotation speed is any one of 90 rpm to 110 rpm, and the fifth preset rotation speed is not lower than 1000 rpm.
As a preferable scheme of the present invention, after the S5 process is finished, the washing machine display process is normal; after the S4 routine is completed, the washing machine displays a routine abnormality.
A washing machine adopts the control method of the eccentric state.
The invention has the beneficial effects that:
according to the control method for the eccentric state of the washing machine, the rotating speed of the motor is controlled to be the first preset rotating speed in the step S1, the rotating speed is kept for the time T1, and due to the fact that the speed of the first preset rotating speed is small, when the drum rotates at the first speed, the clothes inside the drum can be sufficiently stirred, and the position of the clothes in the drum can be really changed substantially; increasing the rotation speed of the motor to a second preset rotation speed in S2, judging whether the washing machine meets the static eccentricity condition, if so, executing S3, increasing the rotation speed of the motor to a third preset rotation speed in S3, judging whether the washing machine meets the dynamic eccentricity condition, and if not, returning to S1; compared with the prior art, when the dynamic eccentric condition is judged to be unqualified, the control method provided by the invention directly returns to the step S1 to perform low-speed sufficient stirring again, so that the position of the clothes in the drum can be really and substantially changed, and the eccentric state of the drum is further changed. Therefore, the control method of the eccentric state of the washing machine provided by the invention can accurately judge and change the eccentric state of the drum, and the control method is more reasonable.
The washing machine provided by the invention adopts the control method of the eccentric state, so that the eccentric state of the roller is more reasonable, the stress is more stable, the dewatering efficiency is higher, and the reliability is high.
Drawings
FIG. 1 is a flow chart of a method for controlling an eccentric state of a washing machine according to the present invention;
FIG. 2 is another flow chart of the control method for the eccentric state of the washing machine according to the present invention;
fig. 3 is still another flowchart of the control method for the eccentric state of the washing machine according to the present invention.
Detailed Description
In order to make the technical problems solved, technical solutions adopted and technical effects achieved by the present invention clearer, the technical solutions of the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, removably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
Fig. 1 is a flow chart of a control method for an eccentric state of a washing machine according to the present invention, as shown in fig. 1, the control method mainly includes the following steps:
s1, controlling the rotating speed of the motor to be a first preset rotating speed, and executing S2 after keeping time T1;
s2, increasing the rotating speed of the motor to a second preset rotating speed, judging whether the washing machine meets the static eccentricity condition, if so, executing S3, otherwise, returning to S1;
and S3, increasing the rotation speed of the motor to a third preset rotation speed, judging whether the washing machine meets the dynamic eccentric condition, if so, executing a spin-drying procedure, and if not, returning to S1.
Because the speed of the first preset rotating speed is low, when the drum rotates at the speed, the internal clothes are not attached to the inner wall of the drum and can be sufficiently stirred in the drum, so that the position of the clothes in the drum can be really and substantially changed; the second preset rotation speed is higher than the first preset rotation speed, and the laundry in the drum is attached to the inner wall of the drum due to the centrifugal force at S2; the third preset rotation speed is higher than the second preset rotation speed, and the laundry in the drum is more closely attached to the inner wall of the drum due to the centrifugal force at S3. That is, the position of the laundry in the drum can be substantially changed only at the first preset rotation speed of S1, and the laundry in the drum is stuck to the inner wall of the drum due to the centrifugal force at the second preset rotation speed of S2, the third preset rotation speed of S3, and the subsequent high-speed rotation, and the faster the rotation speed is, the more closely the laundry is stuck. The eccentric state of the drum is constant when the laundry is attached to the inner wall of the drum, and can be changed only when the laundry is separated from the inner wall of the drum.
In the control method provided by the invention, in the first judging process, if the dynamic eccentric condition is judged to be unqualified, the static eccentric condition is returned, the static eccentric condition is directly returned to S1, and after the low-speed rotation of S1 is carried out, the distribution of the clothes in the roller can be changed, so that the eccentric state of the roller is changed, and then the next judging process is carried out again, so that the control method is more reasonable, and the dynamic eccentric condition is easier to judge to be qualified.
Specifically, fig. 2 is another flowchart of the method for controlling the eccentric state of the washing machine according to the present invention, and fig. 2 is a further detailed flowchart of the flowchart of fig. 1, wherein step S2 specifically includes step S21, step S22 and step S23, and step S3 specifically includes step S31, step S32 and step S33.
As shown in fig. 2, the spin-drying method further includes steps S4 and S5, corresponding to two different spin-drying speeds under different judgment conditions. S4 specifically includes: s4, controlling the rotating speed of the motor to be a fourth preset rotating speed, and keeping the rotating speed until the program is finished; s5 specifically includes: and S5, keeping the rotating speed of the lifting motor at a fifth preset rotating speed until the program is ended.
As can be seen from the above analysis, in the first cycle, after the laundry in the drum is sufficiently agitated in step S1, the lifting speed proceeds to step S21; at the second preset rotating speed, the clothes in the drum is attached to the inner wall of the drum due to the centrifugal force, the drum has an eccentric state, the eccentric state is judged, if the eccentric state of the drum does not meet the static eccentric condition at the step S22, the clothes in the drum are distributed unreasonably at the moment, the judgment of the step S3 can not be accelerated at all, and therefore, the step S1 is returned after the judgment of the step S22 fails, the clothes in the drum are separated from the inner wall of the drum, the full stirring is carried out, and the step S21 is carried out to form the second circulation judgment. And if the step S22 still fails in the second loop judgment, returning to S1 to perform third loop judgment, and so on until the Nth loop judgment, wherein N is a natural number more than or equal to 3.
Further, if the static eccentricity condition is judged N times, and the static eccentricity condition is not satisfied N consecutive times, it means that the laundry inside the drum is redistributed inside the drum a limited number of times and it is difficult to satisfy the static eccentricity condition, or the probability that the laundry inside the drum can be adjusted to satisfy the static eccentricity condition through the steps S1 and S2 is not high. Meanwhile, the adjustment through the steps S1 and S2 has been performed for a while, at this time, the spin-drying operation has not been performed yet, which is obviously unsatisfactory. However, if the user is alerted to take out the laundry that has not been spin-dried, the user may be unnecessarily troubled and the user experience may be reduced.
To solve this problem, the control method proposed by the present invention adds step S4, as shown in fig. 2. In step S2, the method further includes step S23: and S23, judging whether the static eccentricity condition is not met for N times, if so, executing S4, otherwise, returning to S1, wherein N is a natural number more than or equal to 3. S4 specifically includes: and controlling the rotating speed of the motor to be at a fourth preset rotating speed, and keeping the rotating speed until the program is finished.
Preferably, the fourth preset rotation speed is less than the third preset rotation speed, and further, the fourth preset rotation speed may be set to be greater than or equal to the second preset rotation speed. That is, when step S4 is performed, the washing machine does not perform dynamic eccentricity condition judgment any more (because the static eccentricity condition is not qualified all the time, the dynamic eccentricity condition is not qualified), and does not accelerate until the laundry is dried at a high speed, the laundry is directly dried at a fourth preset rotation speed, and the process is maintained until the process is finished, and the laundry is continuously dried at the fourth preset rotation speed, so that the laundry is dried to a certain extent, but the drying effect is not good. Preferably, after the S4 process is finished, the washing machine displays the abnormal process, and the user can select whether to spin the clothes again or dry the clothes directly after taking out the clothes. Therefore, by setting the step S4, unnecessary trouble of the user is solved, and the user experience is good. Meanwhile, the drying is carried out at a fourth preset rotating speed, and the fourth preset rotating speed is not large, so that the mechanical structure cannot be damaged, and the problems such as barrel collision and the like cannot be caused.
Further, in step S22, if the eccentric state of the drum satisfies the static eccentric condition, step S31 is performed to increase the rotation speed of the motor to a third preset rotation speed, at which the laundry in the drum is more closely attached to the inner wall of the drum due to the centrifugal force, step S32 is performed to determine whether the washing machine satisfies the dynamic eccentric condition, if the dynamic eccentric condition is not satisfied, step S1 is returned, if the dynamic eccentric condition is satisfied, it is determined that the eccentric state of the drum is good at this time, step S5 is directly performed, and step S5 specifically includes: and the rotating speed of the hoisting motor is kept at a fifth preset rotating speed until the program is ended.
The fifth preset rotation speed in the step S5 is a higher rotation speed, and the drum rotates at the fifth preset rotation speed, so that the clothes inside can be fully dried, and after the process of S5 is finished, the display program of the washing machine is normal, and the water content of the taken-out clothes is low, which meets the drying requirement.
In practical situations, the static eccentricity condition is easier to be met than the dynamic eccentricity condition, and the static eccentricity condition is met, but not necessarily the dynamic eccentricity condition. If the dynamic eccentricity condition is judged in step S32 and the process returns to step S1, which corresponds to the loop judgment process from step S1 to step S3 being performed once more, and if the judgment in step S32 is not carried out multiple times, it means that the laundry in the drum cannot reach the dynamic eccentricity condition every time even if the laundry is redistributed multiple times in step S1 and the static eccentricity condition can be reached every time the loop judgment is carried out.
To solve this problem, as shown in fig. 2, in step S3, the method further includes step S33:
and S33, judging whether the condition that M continuous times do not accord with the dynamic eccentricity condition is met, if so, executing a finishing program, otherwise, returning to S1, wherein M is a natural number more than or equal to 2.
When the judgment of step S33 is yes, the eccentric state in the drum is good, and the static eccentric condition is satisfied, after the procedure S6 is finished, the user slightly changes the position of the clothes in the tub, and then starts the procedure to judge, so that it is possible to directly judge the clothes in step S32 as being qualified.
Fig. 3 is still another flowchart of the method for controlling the eccentric state of the washing machine according to the present invention, and as shown in fig. 3, when the step S33 is yes, the method may further perform the step S7: and increasing the rotating speed of the motor to a sixth preset rotating speed, and keeping the rotating speed until the program is finished. And the numerical value of the sixth preset rotating speed is greater than the third preset rotating speed and less than the fifth preset rotating speed. That is, in step S7, the pre-spin may be performed at a relatively fast speed. Preferably, after the S7 process is finished, the washing machine displays the abnormal process, and the user can select whether to spin the clothes again or dry the clothes directly after taking out the clothes.
Further, the present invention preferably protects a criterion of the static eccentricity condition and the dynamic eccentricity condition, that is, in the present invention, both the static eccentricity condition and the dynamic eccentricity condition are judged based on the electric power of the motor. Because the electric power of the corresponding motor is different under different rotating speeds, different torques and different loads, the electric power of the motor can be detected to be used as a judgment basis for a static eccentric condition and a dynamic eccentric condition.
In the prior art, the static eccentric condition and the dynamic eccentric condition are comprehensively judged by real-time data of the rotating speed and the torque of the drum, and in order to obtain the real-time data of the rotating speed and the torque of the drum, a rotating speed sensor and a torque sensor are required to be arranged in the washing machine, so that the cost of the whole washing machine is increased, the space in the washing machine is occupied, and the compact design is not facilitated.
In the present invention, the electric power is calculated by multiplying the voltage of the motor by the current, and both the voltage and the current of the motor are obtained by reading the driving board of the motor, so that it is not necessary to provide any sensor.
It is expected that the drum, when rotating, could theoretically rotate at a constant rotational speed, but in practice the speed of this rotation is subject to various factors, fluctuating over a relatively small speed range. The first preset rotating speed, the second preset rotating speed, the third preset rotating speed, the fourth preset rotating speed, the fifth preset rotating speed and the sixth preset rotating speed in the control method actually represent that the rotating speed fluctuates within a certain error range of a certain specific rotating speed. In the invention, the first preset rotating speed is 30 revolutions per minute, the second preset rotating speed is 90 revolutions per minute, the third preset rotating speed is 400 revolutions per minute, the fourth preset rotating speed is 100 revolutions per minute, and the fifth preset rotating speed is 1200 revolutions per minute. For example, in practical cases, the first preset rotation speed may fluctuate within a range of 25 rpm to 35 rpm, the second preset rotation speed may fluctuate within a range of 80 rpm to 100 rpm, the third preset rotation speed may fluctuate within a range of 380 rpm to 420 rpm, the fourth preset rotation speed may fluctuate within a range of 90 rpm to 110 rpm, and the fifth preset rotation speed is the highest speed in the spin-drying process, and may generally fluctuate within a range of 1000 rpm to 1500 rpm depending on the performance of different washing machines, and a washing machine with good performance may even reach 2000 rpm or more.
The invention also provides a washing machine, which adopts the control method of the eccentric state, has higher dehydration efficiency and high reliability and can effectively dry clothes.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments illustrated herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims (10)
1. A control method of an eccentric state of a washing machine is characterized by comprising the following steps:
s1, controlling the rotating speed of the motor to be at a first preset rotating speed, and executing S2 after keeping the rotating speed for T1;
s2, increasing the rotating speed of the motor to a second preset rotating speed, judging whether the washing machine meets the static eccentricity condition, and if so, executing S3;
and S3, increasing the rotating speed of the motor to a third preset rotating speed, judging whether the washing machine meets the dynamic eccentric condition, and returning to S1 if the washing machine does not meet the dynamic eccentric condition.
2. The method as claimed in claim 1, wherein in the step S2, if the washing machine is judged not to comply with the static eccentricity condition, the method returns to S1.
3. The method as claimed in claim 2, wherein in the step S2, if it is determined N consecutive times that the static eccentricity condition is not met, performing S4, wherein N is a natural number greater than or equal to 3;
and S4, controlling the rotation speed of the motor to be at a fourth preset rotation speed, and keeping the rotation speed until the program is finished.
4. The method as claimed in claim 3, wherein in the step S3, if it is judged that the dynamic eccentricity condition is satisfied, the step S5 is executed,
and S5, keeping the rotating speed of the lifting motor at a fifth preset rotating speed until the program is ended.
5. The method as claimed in claim 4, wherein the process is ended if the dynamic eccentricity condition is not satisfied M consecutive times in step S3, wherein M is a natural number greater than or equal to 2.
6. The control method of an eccentric state of a washing machine according to any one of claims 1 to 5, wherein the static eccentric condition and the dynamic eccentric condition are judged based on electric power of a motor; the electric power is calculated by multiplying a voltage of the motor by a current, and the voltage and the current of the motor are both obtained by reading a driving plate of the motor.
7. The control method of an eccentric state of a washing machine according to claim 3, wherein the fourth preset rotation speed is less than the third preset rotation speed.
8. The method as claimed in claim 5, wherein the first preset rotation speed is any one of 25 rpm to 35 rpm, the second preset rotation speed is any one of 80 rpm to 100 rpm, the third preset rotation speed is any one of 380 rpm to 420 rpm, the fourth preset rotation speed is any one of 90 rpm to 110 rpm, and the fifth preset rotation speed is not lower than 1000 rpm.
9. The control method of the eccentric state of the washing machine according to claim 4, wherein the washing machine displays the program as normal after the program of S5 is finished; after the S4 routine is completed, the washing machine displays a routine abnormality.
10. A washing machine characterized by adopting the control method of the eccentric state according to any one of claims 1 to 9.
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| CN114775223A (en) * | 2022-04-29 | 2022-07-22 | 无锡飞翎电子有限公司 | Dehydration control method, system, device and storage medium for clothes processing device |
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| CN114164610B (en) * | 2021-12-13 | 2022-12-09 | 珠海格力电器股份有限公司 | Washing machine eccentricity detection method and device, storage medium and washing machine |
| CN114775223A (en) * | 2022-04-29 | 2022-07-22 | 无锡飞翎电子有限公司 | Dehydration control method, system, device and storage medium for clothes processing device |
| CN114775223B (en) * | 2022-04-29 | 2024-07-02 | 无锡飞翎电子有限公司 | Method, system, device and storage medium for controlling dehydration of clothes treatment device |
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Application publication date: 20200721 |