CN113235267B - Washing machine dehydration control method and device and washing machine - Google Patents
Washing machine dehydration control method and device and washing machine Download PDFInfo
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- CN113235267B CN113235267B CN202110461624.3A CN202110461624A CN113235267B CN 113235267 B CN113235267 B CN 113235267B CN 202110461624 A CN202110461624 A CN 202110461624A CN 113235267 B CN113235267 B CN 113235267B
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- 238000005406 washing Methods 0.000 title claims abstract description 170
- 230000018044 dehydration Effects 0.000 title claims abstract description 138
- 238000006297 dehydration reaction Methods 0.000 title claims abstract description 124
- 238000000034 method Methods 0.000 title claims abstract description 69
- 238000006073 displacement reaction Methods 0.000 claims abstract description 83
- 230000001133 acceleration Effects 0.000 claims abstract description 77
- 238000001514 detection method Methods 0.000 claims description 27
- 230000008569 process Effects 0.000 claims description 17
- 230000000694 effects Effects 0.000 abstract description 4
- 238000011161 development Methods 0.000 abstract description 3
- 238000011897 real-time detection Methods 0.000 abstract description 3
- 230000001276 controlling effect Effects 0.000 description 10
- 239000000463 material Substances 0.000 description 4
- 238000012423 maintenance Methods 0.000 description 3
- 230000004044 response Effects 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 239000006096 absorbing agent Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 230000033001 locomotion Effects 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000009347 mechanical transmission Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
Classifications
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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
- D06F33/00—Control of operations performed in washing machines or washer-dryers
- D06F33/30—Control of washing machines characterised by the purpose or target of the control
- D06F33/32—Control of operational steps, e.g. optimisation or improvement of operational steps depending on the condition of the laundry
- D06F33/40—Control of operational steps, e.g. optimisation or improvement of operational steps depending on the condition of the laundry of centrifugal separation of water from the laundry
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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
- D06F33/00—Control of operations performed in washing machines or washer-dryers
- D06F33/30—Control of washing machines characterised by the purpose or target of the control
- D06F33/48—Preventing or reducing imbalance or noise
-
- 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
- D06F34/00—Details of control systems for washing machines, washer-dryers or laundry dryers
- D06F34/04—Signal transfer or data transmission arrangements
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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
- D06F34/00—Details of control systems for washing machines, washer-dryers or laundry dryers
- D06F34/14—Arrangements for detecting or measuring specific parameters
- D06F34/16—Imbalance
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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
- D06F34/00—Details of control systems for washing machines, washer-dryers or laundry dryers
- D06F34/14—Arrangements for detecting or measuring specific parameters
- D06F34/20—Parameters relating to constructional components, e.g. door sensors
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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
- D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
- D06F2103/24—Spin speed; Drum movements
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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
- D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
- D06F2103/26—Imbalance; Noise level
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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
- D06F2105/00—Systems or parameters controlled or affected by the control systems of washing machines, washer-dryers or laundry dryers
- D06F2105/46—Drum speed; Actuation of motors, e.g. starting or interrupting
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B40/00—Technologies aiming at improving the efficiency of home appliances, e.g. induction cooking or efficient technologies for refrigerators, freezers or dish washers
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Computer Networks & Wireless Communication (AREA)
- Control Of Washing Machine And Dryer (AREA)
Abstract
The application discloses a washing machine dehydration control method and device and a washing machine under the condition of distinguishing load inertia, wherein the judgment of the load eccentricity of the washing machine is realized by detecting the current vibration displacement of an outer cylinder of the washing machine in a low-speed area, and the real-time detection of the vibration condition of the washing machine is realized by detecting the vibration acceleration of the outer cylinder of the washing machine in a high-speed area, so that the real-time rotation speed control and vibration protection are carried out, the load eccentricity and the current acceleration condition of a dehydration barrel during dehydration can be accurately obtained, the real-time vibration condition of the washing machine is accurately obtained, the rotation speed control and the vibration protection are carried out according to the vibration situation, the vibration and the noise during low-speed rotation and high-speed rotation of the washing machine can be effectively reduced, the dehydration effect can be improved, the problems of large vibration and large noise during dehydration of the washing machine can be effectively solved, and the development of the washing machine industry is promoted.
Description
Technical Field
The application relates to the technical field of washing appliances, in particular to a washing machine dehydration control method and device and a washing machine.
Background
The problem of uneven distribution of the washings is easy to occur due to the inconsistent water absorption capacity and materials of the washings in the using process of the washing machine. Uneven distribution of washings can cause the rotation axis of the washing machine to deviate from the central position, the washing machine can cause the outer barrel to strike the box body or the control rod under the eccentric state, vibration or noise is generated, and even the problem of movement, jump or damage of the washing machine can occur when the eccentricity is serious.
Therefore, in the dehydration process of the washing machine, the detection of the eccentricity is more critical, but the existing dehydration control method of the washing machine cannot accurately adjust the rotation speed during dehydration due to the fact that the eccentricity cannot be accurately detected, vibration or noise of the washing machine can often occur, smooth dehydration of the washing machine is greatly limited, and development of the washing machine industry is affected.
Disclosure of Invention
The present application aims to solve the above-mentioned technical problems. Therefore, an object of the present application is to provide a dehydration control method and a dehydration control apparatus for a washing machine, which can effectively reduce vibration and noise during dehydration of the washing machine, thereby improving the dehydration effect.
In order to solve the technical problems, the technical solution of the application is as follows:
one embodiment of the present application provides a dehydration control method for a washing machine, comprising the steps of:
when a dehydration program is executed, acquiring the dehydration rotating speed of a dehydration barrel in real time, and determining that the dehydration barrel is currently in a low rotating speed stage or a high rotating speed stage of the dehydration program according to the dehydration rotating speed;
in a low rotation speed stage of the dehydration program, obtaining vibration displacement of the dehydration barrel and load inertia of clothes, and adjusting the dehydration rotation speed according to the numerical relation between the vibration displacement and a displacement threshold and the load inertia of the clothes;
and in a high rotating speed stage of the dehydration program, obtaining the vibration acceleration of the dehydration barrel, and adjusting the dehydration rotating speed according to the numerical relation between the vibration acceleration and an acceleration threshold value.
According to an aspect of the embodiment of the present application, the method for adjusting the dehydration speed according to the numerical relation between the vibration displacement amount and the displacement amount threshold value and the load inertia of the laundry includes:
acquiring the current vibration displacement;
if the current vibration displacement is larger than the vibration displacement threshold, the rotation speed of the dewatering barrel is reduced, and the dewatering barrel is controlled to shake and distribute the clothes;
if the current vibration displacement is smaller than or equal to the vibration displacement threshold, determining the eccentric amount of the washing machine according to the load inertia and the current vibration displacement, and increasing the rotating speed according to the eccentric amount of the washing machine so as to achieve the target rotating speed of the dewatering barrel.
According to one aspect of the embodiment of the present application, in a high rotational speed stage of the dehydration procedure, the method for adjusting the dehydration rotational speed according to the numerical relationship between the vibration acceleration and the acceleration threshold value includes:
acquiring current vibration acceleration;
if the current vibration acceleration is larger than the acceleration threshold value, the rotation speed of the dewatering barrel is reduced to realize that the current vibration acceleration is smaller than the acceleration threshold value;
and if the current vibration acceleration is smaller than or equal to the acceleration threshold value, the rotation speed of the dewatering barrel is increased to reach the target rotation speed of the dewatering barrel.
According to an aspect of the embodiment of the present application, the method further includes:
acquiring the current dewatering attempt number, wherein the dewatering attempt number is determined according to the number of restarting the dewatering program when the vibration displacement is larger than the displacement threshold;
if the current dewatering attempt number is larger than or equal to the maximum dewatering set number, the alarm of failing to dewater is carried out, and if the current dewatering attempt number is smaller than the maximum dewatering set number, the rotating speed of the dewatering barrel is gradually increased.
According to one aspect of the embodiment of the present application, in a low rotation speed stage of a dehydration process, after the laundry is shaken and distributed by controlling the dehydration tub, the current number of dehydration attempts is increased by 1, and the method for reducing the rotation speed of the dehydration tub includes: the rotational speed of the dewatering barrel is reduced to zero.
According to one aspect of the embodiment of the application, the method for determining whether the dewatering tub is currently in a low rotation speed stage or a high rotation speed stage of the dewatering process according to the rotation speed of the dewatering tub comprises the following steps:
if the rotating speed of the dewatering barrel is smaller than the appointed detection speed, determining that the dewatering barrel is currently in a low rotating speed stage of the dewatering program; if the rotating speed of the dewatering barrel is larger than or equal to the specified detection speed, determining that the dewatering barrel is currently in a high rotating speed stage of the dewatering program.
According to an aspect of an embodiment of the present application, a method of increasing a rotational speed according to an eccentric amount includes:
judging the size range of the eccentric quantity;
if the target rotating speed is the highest rotating speed in the small eccentric interval;
if the target rotating speed is the second highest rotating speed in the middle eccentric interval, the speed value of the highest rotating speed is smaller than the second highest rotating speed;
if the target rotation speed is the third highest rotation speed in the large eccentric section, the speed value of the second highest rotation speed is smaller than the third highest rotation speed.
According to one aspect of the embodiment of the application, the acceleration threshold value is determined according to maximum eccentricity allowed by the washing machine at different load inertia and different maximum rotation speeds.
Another embodiment of the present application provides a dehydration control apparatus of a washing machine, comprising:
the collecting module is used for collecting the rotating speed, the current vibration displacement and the current vibration acceleration of the dewatering barrel of the washing machine in real time when the washing machine executes a dewatering program;
the main control module is connected with the acquisition module and is used for receiving the data acquired by the acquisition module and executing the dewatering control method of the washing machine so as to generate a dewatering control signal according to the data.
And the motor control module is respectively connected with the main control module and the motor of the dewatering barrel and is used for receiving the dewatering control signal and driving the motor of the dewatering barrel to rotate according to the dewatering control signal so as to control the rotating speed of the dewatering barrel.
Another embodiment of the present application provides a washing machine, using the above-described washing machine dehydration control method.
The beneficial effects of the application are as follows:
the application realizes the judgment of the load eccentricity of the washing machine by detecting the current vibration displacement of the outer cylinder of the washing machine in a low-speed area under the condition of distinguishing the load inertia, and realizes the real-time detection of the vibration condition of the washing machine by detecting the vibration acceleration of the outer cylinder of the washing machine in a high-speed area, thereby carrying out real-time rotation speed control and vibration protection, effectively reducing the vibration noise of the washing machine.
Drawings
Fig. 1 is a flowchart of a dehydration control method of a washing machine according to an embodiment of the present application;
fig. 2 is a flowchart of a dehydration control method of a washing machine in specific applications according to an embodiment of the present application;
fig. 3 is a block schematic diagram of a dehydration control apparatus of a washing machine according to an embodiment of the present application;
fig. 4 is a schematic view showing a specific structure of a washing machine operated according to an embodiment of the present application.
In the figure: 10-an acquisition module; 20-a main control module; 30-a motor control module; 1-window; 2-door sealing; 3-an outer cylinder; 4-an inner cylinder; 5-a box body; 6-a vibration sensor; 7-hanging springs; 8-a motor; 9-a damper;
Detailed Description
The application will be described in further detail with reference to the drawings and the specific examples. It should be noted that the technical features of the embodiments of the present application described below may be combined with each other as long as they do not collide with each other. The embodiments described below by referring to the drawings are illustrative and intended to explain the present application and should not be construed as limiting the application.
In the dewatering process of the washing machine, the eccentricity of the washing machine is detected, and then the rotating speed of the washing machine is regulated according to the eccentricity to solve the problems, but the eccentricity detection mode of the existing washing machine mainly carries out eccentricity detection through fluctuation of the rotating speed of a motor, and the detection speed is 90rpm-140rpm. However, the detection method has the following problems in the actual use process, firstly, under the condition that the clothes load of the washing machine is more, the clothes load cannot be well attached to the inner cylinder wall of the washing machine, and along with the lifting of the dewatering rotating speed of the washing machine, the clothes load is washed to discharge water under the action of centrifugal force, so that the eccentric condition of the clothes load in the dewatering process is changed, the detection is inaccurate, and the washing machine cannot accurately adjust the rotating speed due to inaccurate detection, so that the outer cylinder is caused to strike a box body or a control rod, and vibration is generated. Secondly, because the eccentric detection rotating speed of the washing machine is lower, the detection difficulty of the eccentric condition of the complicated clothes load is higher, and when the eccentric detection of the clothes load has larger deviation, the problem of larger vibration noise of the washing machine can be caused. Thirdly, because the eccentricity detection is inaccurate in the low-speed state, the acceleration threshold value is inaccurate when the washing machine is in the high-speed state, so that the rotating speed of the washing machine cannot be accurately regulated in the high-speed state, and the problem that the noise in the high-speed state is large is also caused.
Before further describing the present application, some related concepts will first be described.
Inertia is the inertial value of the motion of a substance (object), is the physical quantity of the inertial magnitude, and is the corresponding inertia J= ∈rζ2dm of the mass of the substance, wherein r is the rotation radius, and m is the mass inertia of a rigid body, and is also an important index of the servo motor. It refers to the inertia of the rotor itself, which is important for acceleration and deceleration of the motor.
The primary load affecting the servo motor response is the load inertia. The response control of the servo motor driver to the servo motor is that the optimal value is that the ratio of load inertia to motor rotor inertia is one, and the maximum value cannot exceed five times. By design of the mechanical transmission, the ratio of the load inertia to the motor rotor inertia can be made to be close to one or smaller. When the load inertia is indeed so large, it is not possible for the mechanical design to make the ratio of load inertia to motor rotor inertia smaller than five times, then a motor with a large motor rotor inertia, a so-called large inertia motor, may be used. With large inertia motors, the capacity of the drive should be greater to achieve a certain response. Therefore, the load inertia index has a large influence on the servo motor driver.
The washing machine also needs a servo motor, and the load inertia of the washing machine has great influence on the control of the dehydration of the washing machine, the vibration displacement, the eccentricity, the acceleration and the like during the dehydration of the washing machine. Therefore, two different ways are often used in performing eccentricity detection of washing machine dehydration and washing machine dehydration control: the first is to perform the eccentricity detection and the washing machine dehydration control in the case where the load inertia needs to be distinguished, and the second is to perform the eccentricity detection and the washing machine dehydration control in the case where the load inertia does not need to be distinguished. The main differences are: firstly, because the load inertia needs to be distinguished, and the value of the load inertia is always changed in the dewatering process of the washing machine, the corresponding vibration displacement amount, eccentricity and acceleration are changed at any time during dewatering, so that the control and vibration protection requirements of the rotating speed are relatively high for the detection of the eccentricity of the washing machine, the calculation and the detection are more complex, the control method of the washing machine for distinguishing the load inertia is relatively complex, but the control method is more similar to the actual use effect of the washing machine, but is more complex and is not beneficial to the unification of various standards, when the washing machine is tested, the situation of not distinguishing the load inertia is generally used, and the specification and various data of each washing machine can be effectively tested to meet the standards by utilizing the dewatering control of the washing machine under the situation of not distinguishing the load inertia.
The dehydration control method and device of a washing machine and the washing machine according to the embodiments of the present application are described below with reference to the accompanying drawings.
One embodiment of the present application provides a method for controlling dehydration of a washing machine, as shown in a flowchart of fig. 1, comprising the following steps:
s1: when a dehydration program is executed, acquiring the dehydration rotating speed of a dehydration barrel in real time, and determining that the dehydration barrel is currently in a low rotating speed stage or a high rotating speed stage of the dehydration program according to the dehydration rotating speed;
in one embodiment of the present application, a method for determining whether a dehydration process is currently in a low rotation speed stage or a high rotation speed stage according to a rotation speed of a dehydration tub includes: if the rotating speed of the dewatering barrel is smaller than the appointed detection speed S, determining that the dewatering barrel is in a low rotating speed stage of the dewatering program currently; if the rotational speed of the dehydration tub is greater than or equal to the designated detection speed S, it is determined that the dehydration tub is currently in a high rotational speed stage of the dehydration process, wherein the designated detection speed S is a preset value that can be adjusted according to different types and models of washing machines, and for most washing machines, the detection speed S is set to 400rpm.
S2: in a low rotation speed stage of the dehydration program, obtaining vibration displacement of the dehydration barrel and load inertia of clothes, and adjusting the dehydration rotation speed according to the numerical relation between the vibration displacement and a displacement threshold and the load inertia of the clothes;
in one embodiment of the present application, in a low rotational speed stage of a dehydration process, the method for adjusting the dehydration rotational speed according to the numerical relationship between the vibration displacement and the displacement threshold and the load inertia of the laundry includes: acquiring the current vibration displacement, and if the current vibration displacement is larger than the vibration displacement threshold, reducing the rotation speed of the dewatering barrel;
the load inertia of the clothes is calculated by the mass of the clothes, the washing machine can also recognize the load inertia of the clothes in the washing machine according to the fluctuation of the rotating speed or the sudden change of the vibration displacement of the washing machine, the load inertia of typical clothes can be divided into small, medium, large, super-large loads and the like, and different load inertia can correspond to different dehydration curve processes. The vibration displacement is detected by a vibration sensor, if the current vibration displacement is larger than the vibration displacement threshold, the rotation speed of the dewatering barrel is reduced, and in one embodiment of the application, the rotation speed of the dewatering barrel is reduced until the rotation speed is reduced to zero, namely, the rotation is stopped, and the dewatering barrel is controlled to shake and distribute the clothes; the current dewatering attempt number is increased by 1, and the process returns to step S1 to restart the dewatering process. In one embodiment of the present application, the vibration displacement threshold of the present application is obtained from a maximum eccentricity amount test allowed by the washing machine in a low speed stage; the vibration displacement threshold is also a preset value defined according to the specification and model of the washing machine, the maximum eccentricity allowed by the washing machine in the low-speed stage is different in different specifications. In the corresponding control method, in the low rotation speed stage of the dewatering program, the current vibration displacement is larger than the vibration displacement threshold, so as to avoid vibration and noise in an overrun state, the rotation speed of the washing machine can be reduced, and meanwhile, the clothes are subjected to shaking and distribution again, and dewatering is performed again.
If the current vibration displacement is smaller than or equal to the vibration displacement threshold, determining the eccentric amount of the washing machine according to the load inertia and the current vibration displacement, and increasing the rotating speed according to the eccentric amount of the washing machine so as to achieve the target rotating speed of the dewatering barrel.
In one embodiment of the present application, a method of increasing a rotational speed according to an eccentric amount includes:
judging the size range of the eccentric quantity; if the target rotating speed is the highest rotating speed in the small eccentric interval; if the target rotating speed is the second highest rotating speed in the middle eccentric interval, the speed value of the highest rotating speed is smaller than the second highest rotating speed; if the target rotation speed is the third highest rotation speed in the large eccentric section, the speed value of the second highest rotation speed is smaller than the third highest rotation speed. The second maximum rotational speed and the third maximum rotational speed are here relative values for the maximum rotational speed, i.e. they do not have a defined value, which is also determined in particular for different washing machine models and specifications. The eccentricity of the washing machine is obtained by the load inertia and the vibration displacement of the washing machine, and is determined by earlier-stage testing of the washing machine, for example, for the load inertia of the A-B section, the corresponding section of the vibration displacement x is 0< x less than or equal to C, the corresponding eccentricity condition is the small eccentricity condition, the corresponding section of the vibration displacement is C < x less than or equal to D, the corresponding eccentricity condition is the medium eccentricity condition, the corresponding section of the vibration displacement is D < x less than or equal to F, and the corresponding eccentricity condition is the large eccentricity condition. The step S2 of the application is adjusted for the low rotation speed stage of the dehydration program, and real-time rotation speed control and vibration maintenance are performed by judging whether the current vibration displacement in the low-speed dehydration state exceeds the vibration displacement threshold value, so that the vibration noise of the washing machine is effectively reduced.
In the low-speed dehydration state of the washing machine, the vibration sensor can directly detect the current vibration displacement amount because the rotation speed is low, but in the high-speed dehydration state of the washing machine, the vibration displacement amount detected by the vibration sensor is inaccurate, so that in the high-speed dehydration state of the washing machine, the real-time rotation speed control and vibration protection of the washing machine can not be realized through the vibration displacement amount, and therefore, the applicant can realize the following specific adjustment method under the high-speed dehydration state of the washing machine by improvement:
s3: and in a high rotating speed stage of the dehydration program, obtaining the vibration acceleration of the dehydration barrel, and adjusting the dehydration rotating speed according to the numerical relation between the vibration acceleration and an acceleration threshold value.
Wherein the vibration acceleration is obtained by direct detection of a vibration sensor. The acceleration threshold is obtained by testing the maximum eccentricity allowed by the washing machine at different load inertias and different maximum rotating speeds, and is also a preset value according to the washing machine with different model specifications, and the acceleration threshold is obtained according to the maximum eccentricity of the washing machine at different load inertias and the maximum rotating speeds before the washing machine is put into use. In the application, the data of the specification washing machine is directly used as the acceleration threshold value in the dehydration degree of the washing machine.
In one embodiment of the present application, during a high rotational speed phase of a dehydration process, the method for adjusting the dehydration rotational speed according to the numerical relationship between the vibration acceleration and the acceleration threshold value comprises: and acquiring the current vibration acceleration, if the current vibration acceleration is larger than an acceleration threshold value, reducing the rotation speed of the dewatering barrel to realize that the current vibration acceleration is smaller than the acceleration threshold value, and if the current vibration acceleration is smaller than or equal to the acceleration threshold value, increasing the rotation speed of the dewatering barrel to reach the target rotation speed of the dewatering barrel.
Step S3 is a method for controlling the rotating speed of the washing machine in a high-speed dehydration state, wherein the rotating speed in the high-speed dehydration state has a critical value, when the judging standard of the critical value is adopted, the rotating speed of the critical value is used for dehydration, the vibration and the noise of the washing machine are smaller, and when the rotating speed is higher than the critical value, the vibration and the noise of the washing machine are large. Therefore, the application carries out the adjustment of the rotating speed by checking the current vibration acceleration and limiting the acceleration under the high-speed dehydration state, when the current vibration acceleration is smaller than or equal to the acceleration threshold value, the rotating speed is continuously increased to accelerate the dehydration efficiency, when the current vibration acceleration is larger than the acceleration threshold value, the rotating speed of the washing machine is reduced to reach the target rotating speed of the washing machine, the phenomenon that the vibration and the noise are large due to the overhigh rotating speed of the washing machine is avoided, the critical value is the target rotating speed, the target rotating speeds of different types of washing machines are different, and the application does not directly compare the rotating speed with the target rotating speed as a mode for reducing the vibration and the noise, but uses the comparison of the current vibration acceleration and the limiting the acceleration, and can more accurately judge the current situation of the washing machine along with the actual performance of the washing machine.
After the control is completed by the above control method, the dehydration tub continuously dehydrates at the target rotation speed until the dehydration time is over. The dehydration is completed, which is the last step of dehydration, that is, dehydration is performed at a target rotation speed until the set dehydration time is ended.
In one embodiment of the application, the method further comprises:
obtaining the current dewatering attempt times N, wherein the dewatering attempt times N are determined according to the times that the dewatering program is restarted when the vibration displacement is larger than the displacement threshold, namely if the initial first dewatering input is that N is 0, N represents the times that the vibration displacement is larger than the displacement threshold and the dewatering program is restarted, if the initial first dewatering input is that N is 1, the current dewatering attempt times N are the times that the dewatering program is restarted due to the fact that the vibration displacement is larger than the displacement threshold and the times that the dewatering program is restarted are added once, namely the first dewatering is recorded once, and the dewatering program is restarted once only when the vibration displacement is larger than the displacement threshold; the general value interval of the current dehydration attempt number N is (N=1, 2 … … M-1), M is the maximum set dehydration number, if the current dehydration attempt number N is greater than or equal to the maximum set dehydration number M, the alarm of failing to dehydrate is performed, the corresponding dehydration number reaches the set upper limit, the washing machine fails to dehydrate, and at the moment, the alarm is directly performed, and the maintenance personnel is requested to perform corresponding replacement and maintenance. And if the current dewatering attempt times are smaller than the maximum dewatering set times, gradually increasing the rotating speed of the dewatering barrel. The corresponding steps of the method are generally used for the dewatering alarm control at the beginning of the whole procedure, i.e. before step S1.
In one embodiment of the present application, after the laundry is shaken and distributed by controlling the dewatering tub in a low rotation stage of the dewatering process, the current number of dewatering attempts is increased by 1, and the number of dewatering attempts is re-entered into the number determining step. This step is also a step of accumulating the current number of dewatering attempts N.
The present application will be further described with specific application to a method for controlling dehydration of a washing machine.
As shown in fig. 2, the application discloses a method for controlling dehydration of a washing machine, which comprises the following steps:
step1: recording the current dehydration attempt number as N; the current dewatering attempt number N is generally set to be (N=1, 2 … … M-1), and M is the maximum set number of dewatering.
Step2: calculating load inertia of the clothes;
step3: if the current dewatering attempt number N is greater than or equal to the dewatering maximum set number M, the washing machine carries out dewatering failure alarm; if the current dewatering attempt number N is smaller than the dewatering maximum set number M, gradually increasing the rotating speed of the washing machine;
step4: when the real-time washing machine rotating speed is smaller than the appointed detection speed S, the current vibration displacement is obtained, if the current vibration displacement is larger than the vibration displacement threshold, the rotating speed of the washing machine is reduced until the rotating speed is reduced to zero, namely, the rotation is stopped, the clothes are shaken and distributed again, the dewatering is carried out again, the current dewatering attempt times N are increased by 1 time, the Step1 is returned, and the dewatering program of the washing machine is restarted.
Step5: if the current vibration displacement is smaller than or equal to the vibration displacement threshold, determining the eccentric amount of the washing machine according to the load inertia and the current vibration displacement, and increasing the rotating speed according to the eccentric amount of the washing machine so as to achieve the target rotating speed of the dewatering barrel.
Step6: when the rotating speed of the real-time washing machine is greater than or equal to the appointed detection speed S, the current vibration acceleration and the limiting acceleration are obtained, if the current vibration acceleration is greater than the acceleration threshold value, the rotating speed of the dewatering barrel is reduced to realize that the current vibration acceleration is smaller than the acceleration threshold value, and if the current vibration acceleration is smaller than or equal to the acceleration threshold value, the rotating speed of the dewatering barrel is increased to reach the target rotating speed of the dewatering barrel.
Step7: and continuously dehydrating the washing machine at the target rotating speed of the washing machine until the dehydrating time is over. The dehydration is completed, and this step is the final step of dehydration, i.e., dehydration is performed at a target rotation speed until the set dehydration time is ended, and the entire period from low speed to high speed is set to 5 minutes.
Another embodiment of the present application provides a dehydration control apparatus of a washing machine, comprising:
the collecting module 10 is used for collecting the rotating speed, the current vibration displacement and the current vibration acceleration of the dewatering barrel of the washing machine in real time when the washing machine executes a dewatering program;
the main control module 20 is connected to the acquisition module 10, and is configured to receive the data acquired by the acquisition module 10, and execute the above-mentioned dewatering control method of the washing machine, so as to generate a dewatering control signal according to the data.
And the motor control module 30 is respectively connected with the motors of the main control module 20 and the dewatering barrel, and is used for receiving the dewatering control signal and driving the motors of the dewatering barrel to rotate according to the dewatering control signal so as to control the rotating speed of the dewatering barrel.
The dehydration control apparatus of the present application and the dehydration control method of the present application are used in a matched manner. The specific use principle is as follows:
when a dehydration program is executed, the acquisition module 10 acquires the dehydration rotating speed of the dehydration barrel in real time and transmits the rotating speed to the main control module 20, and the main control module 20 determines that the current dehydration program is in a low rotating speed stage or a high rotating speed stage according to the dehydration rotating speed;
in a low rotation speed stage of the dehydration program, the acquisition module 10 acquires the vibration displacement of the dehydration barrel, and the main control module 20 adjusts the dehydration rotation speed according to the numerical relation between the vibration displacement and a displacement threshold; the method comprises the following specific steps: the acquisition module 10 acquires the current vibration displacement and the load inertia of the clothes, the main control module 20 judges that if the current vibration displacement is larger than the vibration displacement threshold, the rotation speed of the dewatering barrel is reduced by controlling the motor control module 30, and the dewatering barrel is controlled to shake and distribute the clothes; if the current vibration displacement is smaller than or equal to the vibration displacement threshold, determining the eccentric amount of the washing machine according to the load inertia and the current vibration displacement, and increasing the rotating speed according to the eccentric amount of the washing machine by controlling the motor control module 30 to reach the target rotating speed of the dewatering drum;
in the high rotation speed stage of the dehydration procedure, the acquisition module 10 acquires the vibration acceleration of the dehydration barrel, and the main control module 20 adjusts the dehydration rotation speed according to the numerical relation between the vibration acceleration and the acceleration threshold. The specific steps are that the acquisition module 10 acquires the current vibration acceleration, if the current vibration acceleration is greater than the acceleration threshold, the main control module 20 reduces the rotation speed of the dewatering barrel by controlling the motor control module 30 to achieve that the current vibration acceleration is less than the acceleration threshold, and if the current vibration acceleration is less than or equal to the acceleration threshold, the main control module 20 increases the rotation speed of the dewatering barrel by controlling the motor control module 30 to achieve the target rotation speed of the dewatering barrel.
Another embodiment of the present application provides a washing machine, using the above-described washing machine dehydration control method.
The application discloses a washing machine, which is mainly composed of a window 1, a door seal 2, an outer cylinder 3, an inner cylinder 4, a box body 5, a vibration sensor 6, a suspension spring 7, a motor 8, a shock absorber 9, wherein the window 1 is arranged on the box body 5 and is connected with the outer cylinder 3 of the washing machine through the door seal 2, and the door seal 2 is usually made of rubber material; the inner cylinder 4 is positioned in the outer cylinder of the washing machine and is connected with the motor 8 through a transmission mechanism; the outer cylinder 3 is connected with the box body 5 through a suspension spring 7 and a shock absorber 9; the vibration sensor 6 is placed on the outer tub of the washing machine. The main control module 20 of the washing machine drives the motor of the dewatering tub to rotate through the motor control module 30, meanwhile, the vibration information of the outer tub of the washing machine mainly comprises vibration displacement and vibration acceleration, the vibration displacement and the vibration acceleration are fed back to the main control module 20 of the washing machine through the vibration sensor 6, and the main control module 20 controls the rotating speed of the washing machine according to the dewatering control algorithm corresponding to the embodiment, so that the vibration noise of the washing machine is guaranteed.
The application discloses a dewatering control method and device of a washing machine and the washing machine, wherein the method and device realize judgment of the load eccentricity of the washing machine by detecting the current vibration displacement of an outer cylinder of the washing machine in a low-speed area under the condition of distinguishing load inertia, and realize real-time detection of the vibration condition of the washing machine by detecting the vibration acceleration of the outer cylinder of the washing machine in a high-speed area, so that the real-time rotation speed control and vibration protection are carried out, the vibration noise of the washing machine is effectively reduced, the conditions of the eccentric load and the acceleration threshold of the dewatering barrel during dewatering can be accurately obtained, the real-time vibration condition of the washing machine is accurately known, the rotation speed control and vibration protection are carried out according to the conditions, the vibration and noise during low-speed rotation and high-speed rotation of the washing machine can be effectively reduced, the dewatering effect can be improved, the problems of large vibration and large noise during dewatering of the washing machine can be effectively solved, and the development of the washing machine industry is promoted.
In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present application and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present application.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present application, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
In the present application, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to the specific circumstances.
In the present application, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.
In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present application. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.
While embodiments of the present application have been shown and described, it will be understood that the above embodiments are illustrative and not to be construed as limiting the application, and that variations, modifications, alternatives and variations may be made in the above embodiments by those skilled in the art within the scope of the application, which is therefore intended to be covered by the appended claims and their equivalents.
Claims (6)
1. A method for controlling dehydration of a washing machine, comprising the steps of:
when a dehydration program is executed, acquiring the dehydration rotating speed of a dehydration barrel in real time, and determining that the dehydration barrel is currently in a low rotating speed stage or a high rotating speed stage of the dehydration program according to the dehydration rotating speed;
in a low rotation speed stage of the dehydration procedure, obtaining the vibration displacement of the dehydration barrel and the load inertia of clothes, and obtaining the current vibration displacement;
if the current vibration displacement is larger than the vibration displacement threshold, the rotation speed of the dewatering barrel is reduced, and the dewatering barrel is controlled to shake and distribute the clothes; if the current vibration displacement is smaller than or equal to the vibration displacement threshold, determining the eccentric quantity of the washing machine according to the section where the load inertia is located and the section where the current vibration displacement is located, and increasing the rotating speed according to the eccentric quantity of the washing machine so as to achieve the target rotating speed of the dewatering barrel;
judging the size interval of the eccentric quantity;
if the target rotating speed is in the small eccentric interval, setting the target rotating speed to be the highest rotating speed;
if the target rotating speed is the second highest rotating speed in the middle eccentric interval, the speed value of the highest rotating speed is larger than the second highest rotating speed;
if the target rotating speed is the third highest rotating speed in the large eccentric interval, the speed value of the second highest rotating speed is larger than the third highest rotating speed;
acquiring the current vibration acceleration of the dewatering barrel in a high rotating speed stage of the dewatering program; if the current vibration acceleration is larger than an acceleration threshold value, the rotation speed of the dewatering barrel is reduced so as to realize that the current vibration acceleration is smaller than the acceleration threshold value; and if the current vibration acceleration is smaller than or equal to the acceleration threshold value, the rotation speed of the dewatering barrel is increased to reach the target rotation speed of the dewatering barrel, wherein the acceleration threshold value is determined according to different load inertia and the allowable maximum eccentricity of the washing machine at different maximum rotation speeds.
2. The dehydration control method of a washing machine according to claim 1, further comprising:
acquiring the current dewatering attempt number, wherein the dewatering attempt number is determined according to the number of restarting the dewatering program when the vibration displacement is larger than the displacement threshold;
if the current dewatering attempt number is larger than or equal to the maximum dewatering set number, the alarm of failing to dewater is carried out, and if the current dewatering attempt number is smaller than the maximum dewatering set number, the rotating speed of the dewatering barrel is gradually increased.
3. The dehydration control method of a washing machine according to claim 1, wherein: in the low rotation speed stage of the dehydration procedure, after the dehydration barrel is controlled to shake and distribute clothes, the current dehydration attempt number is increased by 1 time, and the method for reducing the rotation speed of the dehydration barrel comprises the following steps: the rotational speed of the dewatering barrel is reduced to zero.
4. The method of controlling dehydration of a washing machine according to claim 1, wherein the method of determining whether the current dehydration process is in a low rotation stage or a high rotation stage according to the rotation speed of the dehydration tub comprises:
if the rotating speed of the dewatering barrel is smaller than the appointed detection speed, determining that the dewatering barrel is currently in a low rotating speed stage of the dewatering program;
if the rotating speed of the dewatering barrel is larger than or equal to the specified detection speed, determining that the dewatering barrel is currently in a high rotating speed stage of the dewatering program.
5. A dehydration control apparatus of a washing machine, comprising:
the collecting module is used for collecting the rotating speed, the current vibration displacement and the current vibration acceleration of the dewatering barrel of the washing machine in real time when the washing machine executes a dewatering program;
the main control module is connected with the acquisition module and is used for receiving the data acquired by the acquisition module and executing the washing machine dehydration control method according to any one of claims 1-4 so as to generate a dehydration control signal according to the data;
and the motor control module is respectively connected with the main control module and the motor of the dewatering barrel and is used for receiving the dewatering control signal and driving the motor of the dewatering barrel to rotate according to the dewatering control signal so as to control the rotating speed of the dewatering barrel.
6. A washing machine using the washing machine dehydration control method of any one of claims 1 to 4.
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| CN114395895B (en) * | 2022-01-06 | 2024-03-15 | 海信冰箱有限公司 | Method and device for controlling rotating speed of washing machine, computer readable medium and washing machine |
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