CN113430778B - Eccentricity detection method for drum washing machine, drum washing machine and control method thereof - Google Patents
Eccentricity detection method for drum washing machine, drum washing machine and control method thereof Download PDFInfo
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- CN113430778B CN113430778B CN202110612550.9A CN202110612550A CN113430778B CN 113430778 B CN113430778 B CN 113430778B CN 202110612550 A CN202110612550 A CN 202110612550A CN 113430778 B CN113430778 B CN 113430778B
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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
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Abstract
The invention relates to the technical field of washing machines, and discloses an eccentricity detection method of a drum washing machine, the drum washing machine and a control method thereof, wherein the drum washing machine comprises an inner drum, the inner drum is uniformly divided into three regions by taking a rotating axis as a center, the rotation of the inner drum is controlled to detect, one region is detected each time, the detection of the three regions is completed by repeating three times of equal load, a group of eccentricity values is formed, corresponding eccentricity values are obtained, if at least two eccentricity values are inconsistent and the numerical value difference is out of the deviation range, one or two regions with smaller numerical values are corrected, and therefore the unbalance of the washing machine is overcome; testing at least one group of eccentric magnitude values by adopting the method with different mass eccentric loads, comparing the eccentric magnitude values with the real eccentric magnitude values of the washing machine during normal washing and dewatering, and if the eccentricity is judged through comparison, performing deviation correction control in time to improve the uniformity of clothes distribution; if no eccentricity occurs, the highest speed dehydration is carried out, and the dehydration efficiency is improved.
Description
Technical Field
The invention relates to the technical field of washing machines, in particular to an eccentricity detection method of a drum washing machine, the drum washing machine and a control method of the drum washing machine.
Background
The drum washing machine has become the mainstream of the washing machine market due to its excellent washing performance, but the dewatering rotation speed of the drum washing machine is generally very high, and eccentricity is generated under the condition of uneven distribution of clothes during high-speed dewatering. When eccentricity is large, the higher the running rotating speed of the washing machine is, the larger the vibration is, the larger the noise is, even displacement occurs in the washing machine for serious people, and potential safety hazards are brought to poor experience feeling and daily life of users. In order to ensure that the drum washing machine can reach the set maximum rotating speed and has small vibration during dehydration, the eccentric amount needs to be accurately detected and timely deviation rectification control needs to be carried out. However, due to the defect of the structural arrangement of the drum washing machine system, the eccentric magnitude values of the same eccentric load detected in different areas of the inner drum of the drum washing machine are often different, so that the eccentric detection is inaccurate, and the normal high-speed dehydration of the washing machine is influenced.
The method adopted by the patent of the eccentric detection control method and the system for the drum washing machine and the dewatering (publication number: CN 108978116A) is to control the motor to accelerate to a first rotating speed and a second rotating speed respectively, and carry out the eccentric detection by detecting the rotating speed difference value between the maximum rotating speed and the minimum rotating speed of the motor at the first rotating speed and the accumulated input power of the motor in the process of accelerating from the first rotating speed to the second rotating speed.
The method adopted in the patent of the eccentricity detection method of the drum washing machine (publication number: CN 105088661A) is to control the motor to accelerate to a first preset rotating speed and a second preset rotating speed respectively, and carry out eccentricity detection by detecting the rotating speed fluctuation value of the motor at the first preset rotating speed and the speed reduction time of the motor from the first preset rotating speed to the second preset rotating speed.
Disclosure of Invention
The present invention is directed to solving, at least in part, one of the technical problems in the related art. In view of this, the technical problems to be solved by the present invention are: the utility model provides a drum type washing machine eccentricity detection method, a drum type washing machine and a control method thereof, which overcome the unbalance of the rotation of the drum type washing machine and solve the problems of uneven distribution of clothes, no removal of the motor in the rotating speed, low dehydration efficiency and the like in the dehydration process of the drum type washing machine.
In order to solve the problems, the invention adopts the technical scheme that:
the eccentricity detecting method for drum washing machine includes the dewatering tub comprising outer tub and inner tub, and the inner tub is divided into three regions: the rotary shaft is uniformly divided into three sector areas, namely a first area, a second area and a third area, by taking the rotary shaft as a center; in the empty barrel state, the first step: placing an eccentric load at a selected position of one area, controlling the rotation of the empty barrel, and testing and obtaining a corresponding eccentric magnitude; step two: selecting another area, placing an eccentric load with the same mass as the first time at a position corresponding to the first test, repeating the steps to obtain the corresponding eccentric magnitude of the area until the three areas are respectively tested, and obtaining the eccentric magnitude of the three areas; step three: and then rectifying the smaller one and/or two areas in which the eccentricity magnitude is out of the deviation allowable range, so that the eccentricity detection values obtained by the three areas under the uniform load are within the deviation allowable range.
By implementing the eccentricity detection method of the drum washing machine, the eccentricity is detected in the three areas one by one, and the deviation of one and/or two small areas with the eccentricity value outside the deviation allowable range is corrected, so that the eccentricity detection values obtained by the three areas under the condition of uniform load are within the deviation allowable range. Compared with the traditional eccentricity detection method, the detection method provided by the invention has the advantages that the detection result is closer to the actual eccentricity value and more accurate, and a data basis is further provided for improving the dewatering stability of the drum washing machine.
In some embodiments of the invention, the number of revolutions for controlling the rotation of the empty barrel is N, and N is more than or equal to 70 revolutions per minute and less than or equal to 150 revolutions per minute.
Specifically, the number of revolutions for controlling the rotation of the empty barrel is N =93 revolutions/minute.
In some embodiments of the present invention, the eccentric load mass is M,0kg M2.5 Gkg, G is the rated washing capacity of the drum washing machine.
In some embodiments of the present invention, the eccentricity detecting method of the drum washing machine has at least one set of detection in an empty tub state, and each set has the following steps: the method comprises the following steps: placing an eccentric load at a selected position of one area, controlling the rotation of the empty barrel, and detecting and obtaining a corresponding eccentric magnitude; step two: selecting another area, placing an eccentric load with the same mass as the first time at a position corresponding to the first test, repeating the steps to obtain the corresponding eccentric magnitude of the area until the three areas are respectively detected, and obtaining the eccentric magnitude of the three areas; and storing each group of measured eccentricity values for comparison with a real eccentricity detection value obtained in a dehydration state of the drum washing machine.
A control method of a drum washing machine is characterized in that a detected real eccentric magnitude value is compared with an initial eccentric magnitude value to form a numerical difference under the condition that clothes are dehydrated, if the numerical difference is regarded as deviation outside a deviation range, the numerical difference is fed back to an upper computer, and the upper computer synchronously starts a deviation rectifying program to carry out deviation rectifying control; if the numerical difference is within the deviation range, the normal dehydration control is performed.
Specifically, the deviation rectifying control is to rectify the deviation of one and/or two areas with smaller real eccentricity value.
A drum washing machine comprising a processor and a memory for storing a computer program which, when invoked by the processor, implements the drum washing machine control method.
The invention has the beneficial effects that:
the eccentricity detection method of the drum washing machine judges by testing the eccentricity detection values of the three areas of the inner drum of the drum washing machine one by one, if three eccentricity values are out of a deviation range, the defect that the inner drum design has unbalance is indicated, one or two areas with smaller values are required to be corrected, so that the eccentricity detection values obtained under different uniform loads of the three areas are within a deviation allowable range, and the purpose of overcoming the defects of the rotation unbalance and the like of the drum washing machine is achieved. When the unbalance of the inner drum of the drum washing machine is overcome, the eccentric detection value detected by the conventional eccentric detection method is more accurate, and the precision is higher. If eccentricity really occurs during normal washing and dewatering, the eccentricity value can be accurately detected in time and fed back to the upper computer, the upper computer performs deviation rectification control according to the eccentricity condition, the clothes are leveled, and the uniformity of clothes distribution is improved. If no eccentricity occurs, the highest speed dewatering can be performed, thereby improving the dewatering efficiency.
Drawings
FIG. 1 is a schematic diagram of the uniform division of the inner drum region of the drum washing machine according to the eccentricity detection method of the drum washing machine of the present invention;
FIG. 2 is a flowchart illustrating a method for detecting eccentricity of a drum washing machine according to an embodiment of the present invention;
fig. 3 is a flowchart of a method for detecting eccentricity of a drum washing machine according to another embodiment of the present invention.
In the drawings, the components represented by the respective reference numerals are listed below:
11-the first zone, 12-the second zone, 13-the third zone.
Detailed Description
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
The invention discloses an eccentricity detection method of a drum washing machine, the drum washing machine and a control method of the drum washing machine, wherein the drum washing machine comprises an inner drum, the inner drum is uniformly divided into three areas by taking a rotating axis as a center, the test is carried out by controlling the inner drum to rotate, one area is tested each time, the three area tests are completed three times repeatedly, the same-mass eccentricity load test is carried out each time, corresponding eccentricity values are obtained, if at least two eccentricity values are inconsistent and the numerical value difference is out of the deviation range, one or two areas with smaller numerical values are corrected, and therefore the unbalance of the washing machine is overcome; testing at least one group of eccentric magnitude values by adopting the method with different mass eccentric loads, comparing the eccentric magnitude values with the real eccentric magnitude values of the washing machine during normal washing and dewatering, and if the eccentricity is judged through comparison, performing deviation correction control in time to improve the uniformity of clothes distribution; if no eccentricity occurs, the highest speed dehydration is carried out, and the dehydration efficiency is improved.
Example 1:
as shown in fig. 1 and 2, the eccentricity detection method of the drum washing machine of the present embodiment performs the following steps, S1: starting to carry out eccentricity detection; s2: the dewatering barrel of the drum washing machine consists of an outer barrel and an inner barrel, wherein the inner barrel is uniformly divided into three areas according to the clockwise or anticlockwise direction: evenly dividing the barrel into three sector areas, namely a first area 11, a second area 12 and a third area 13 by taking the rotation axis as a center, and in an empty barrel state, the first step: placing an eccentric load at a selected position of one area, controlling the rotation of the empty barrel, and testing to obtain a corresponding eccentric magnitude; step two: selecting another area, placing an eccentric load with the same mass as the first time at a position corresponding to the first test, repeating the steps to obtain the corresponding eccentric magnitude of the area until the three areas are respectively tested, and obtaining the eccentric magnitude of the three areas; and then rectifying the smaller one and/or two areas in which the eccentricity magnitude is out of the deviation allowable range, so that the eccentricity detection values obtained by the three areas under the uniform load are within the deviation allowable range.
The method is used for testing the eccentricity detection of three areas of the inner drum of the drum washing machine, comparing three eccentricity detection values, if the difference of the values is out of the deviation range, the defect that the inner drum design is unbalanced is indicated, and correcting one or two areas with smaller values is needed, so that the eccentricity detection values obtained by loading the three areas are in the difference range, and the purpose of overcoming the defects of unbalance and the like is achieved.
In a preferable mode of this embodiment, the number of revolutions for controlling the rotation of the empty barrel is N, and N is greater than or equal to 70 revolutions per minute and less than or equal to 150 revolutions per minute.
As a preferable mode of the present embodiment, the number of revolutions for controlling the rotation of the empty tub is N =93 revolutions/minute.
In a preferred embodiment of the present invention, the eccentric load mass is M,0 kg. Ltoreq. M.ltoreq.2.5Gkg, and G is the rated washing capacity of the drum washing machine.
Example 2:
some embodiments of the present invention disclose a method for detecting eccentricity of a drum washing machine, as shown in fig. 1 and 2, at least one set of detection is performed, each set of detection has the following steps, S1: starting to carry out eccentricity detection; s2: the dewatering barrel of the drum washing machine consists of an outer barrel and an inner barrel, wherein the inner barrel is uniformly divided into three areas according to the clockwise or anticlockwise direction: evenly dividing the barrel into three sector areas, namely a first area 11, a second area 12 and a third area 13 by taking the rotation axis as a center, and in an empty barrel state, the first step: placing an eccentric load at a selected position of one area, controlling the rotation of the empty barrel, and testing the corresponding eccentric amount to obtain a corresponding eccentric amount value; step two: selecting another area, placing an eccentric load with the same mass as the first time at a position corresponding to the first test, repeating the steps to obtain the corresponding eccentric magnitude of the area until the three areas are respectively tested, and obtaining the eccentric magnitude of the three areas; then, correcting the smaller one and/or two areas with the eccentricity value outside the deviation allowable range, so that the eccentricity detection values obtained by the three areas under the uniform load are within the deviation allowable range; s3: adopting eccentric loads with different masses and adopting the step S2 to detect, if 200g of eccentric loads are placed in any one of the first area 11, the second area 12 and the third area 13, testing the eccentric detection values of the first area 11, the second area 12 and the third area 13 of the drum washing machine, and if the eccentric detection values are out of the deviation range, rectifying the deviation of two smaller areas in which the eccentric magnitude is out of the deviation allowable range; and then respectively testing and performing deviation rectification control by adopting S3 according to 400g, 600g, 400.
After the unbalance of the inner drum of the drum washing machine is overcome, the eccentricity detection value detected by the conventional eccentricity detection method is more accurate, and the precision is higher. If eccentricity really occurs during normal washing and dewatering, the eccentricity value can be accurately detected in time and fed back to the upper computer, so that the upper computer performs correct deviation rectifying operation, lays the clothes, and improves the uniformity of clothes distribution; if no eccentricity occurs, the highest speed dehydration can be performed, thereby improving the dehydration efficiency.
The method for detecting the eccentricity of the drum washing machine is implemented, a control method of the drum washing machine is also provided, the real eccentricity value detected by the drum washing machine is compared with the initial eccentricity value in a clothes dehydration state to form a numerical difference, if the numerical difference is regarded as deviation outside a deviation range, the numerical difference is fed back to an upper computer, and the upper computer synchronously starts a deviation rectifying program to carry out deviation rectifying control; if the numerical difference is within the deviation range, the normal dehydration control is performed.
Specifically, the deviation rectifying control is to rectify the deviation of at least one region in which the numerical difference between the actual eccentricity value and the initial eccentricity value is out of the deviation range after comparison.
The control method of the drum washing machine is implemented, and the drum washing machine also comprises a processor and a memory, wherein the memory is used for storing a computer program, and the computer program realizes the control method of the drum washing machine when being called by the processor.
The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention.
Claims (8)
1. The eccentricity detection method of the drum washing machine is characterized in that a dewatering barrel of the drum washing machine consists of an outer barrel and an inner barrel, and the inner barrel is uniformly divided into three areas according to clockwise or anticlockwise: uniformly dividing the barrel into three sector areas by taking the rotation axis as a center, namely a first area, a second area and a third area, and in an empty barrel state, the first step: placing an eccentric load at a selected position of one area, controlling the rotation of the empty barrel, and detecting and obtaining a corresponding eccentric magnitude; step two: selecting another area, placing an eccentric load with the same mass as the first-time eccentric load at a position corresponding to the first-time detection, repeating the steps to obtain the corresponding eccentric magnitude of the area until the three areas are respectively detected to obtain the eccentric magnitudes of the three areas; step three: and then rectifying the smaller one and/or two areas in which the eccentricity value is out of the deviation allowable range, so that the eccentricity values obtained by the three areas under the uniform load are within the deviation allowable range.
2. The eccentricity detection method of a drum washing machine according to claim 1, wherein the number of rotations of the empty tub is controlled to be N,70 rpm ≤ N ≤ 150 rpm.
3. The eccentricity detection method of a drum washing machine according to claim 2, wherein the number of revolutions for controlling the rotation of the empty tub is N =93 revolutions/minute.
4. The method for detecting the eccentricity of the drum washing machine according to claim 1, wherein the eccentricity load mass is M, M is more than or equal to 0kg and less than or equal to 2.5Gkg, and G is the rated washing capacity of the drum washing machine.
5. A drum washing machine eccentricity detection method as claimed in any one of claims 1 to 4, characterized in that, in the empty tub state, there is at least one set of detection, each set having the following steps: the method comprises the following steps: placing an eccentric load at a selected position of one area, controlling the rotation of the empty barrel, and testing to obtain a corresponding eccentric magnitude; step two: selecting another area, placing an eccentric load with the same mass as the first time at a position corresponding to the first test, repeating the steps to obtain the corresponding eccentric magnitude of the area until the three areas are respectively tested, and obtaining the eccentric magnitude of the three areas; and storing each group of measured eccentricity values for comparison with a real eccentricity detection value obtained in a dehydration state of the drum washing machine.
6. A control method of a drum washing machine comprises the eccentricity detection method of the drum washing machine as claimed in claim 5 and an upper computer, and is characterized in that the real eccentricity value detected by the drum washing machine is compared with the initial eccentricity value under the clothes dehydration state to form a numerical difference, if the numerical difference is regarded as deviation outside the deviation range, the deviation is fed back to the upper computer, and the upper computer synchronously starts a deviation rectification program to carry out deviation rectification control; if the numerical difference is within the deviation range, the normal dehydration control is performed.
7. A control method of a drum washing machine according to claim 6, comprising a deviation rectifying control, wherein the deviation rectifying control is a deviation rectifying control for at least one region in which a value difference of the real eccentricity value compared with the initial eccentricity value is outside a deviation range.
8. Drum washing machine comprising a processor and a memory for storing a computer program, characterized in that said computer program, when invoked by said processor, implements a drum washing machine control method according to claim 6 or 7.
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