CN101419112A - Method and apparatus for determining an imbalance condition in an appliance - Google Patents
Method and apparatus for determining an imbalance condition in an appliance Download PDFInfo
- Publication number
- CN101419112A CN101419112A CNA2008101499990A CN200810149999A CN101419112A CN 101419112 A CN101419112 A CN 101419112A CN A2008101499990 A CNA2008101499990 A CN A2008101499990A CN 200810149999 A CN200810149999 A CN 200810149999A CN 101419112 A CN101419112 A CN 101419112A
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- 238000000034 method Methods 0.000 title claims abstract description 34
- 238000005406 washing Methods 0.000 claims description 21
- 230000008569 process Effects 0.000 claims description 7
- 238000001514 detection method Methods 0.000 abstract description 3
- 230000004087 circulation Effects 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000012937 correction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000000153 supplemental effect Effects 0.000 description 2
- 238000004590 computer program Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000011505 plaster Substances 0.000 description 1
- 230000000246 remedial effect Effects 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
Images
Classifications
-
- 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
-
- 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
- D06F2103/02—Characteristics of laundry or load
- D06F2103/04—Quantity, e.g. weight or variation of weight
-
- 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
-
- 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
- D06F2103/44—Current or voltage
- D06F2103/46—Current or voltage of the motor driving the drum
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Control Of Washing Machine And Dryer (AREA)
- Testing Of Balance (AREA)
Abstract
In one embodiment of the invention, an appliance and method is provided that can determine load imbalance or out-of-balance conditions. The appliances that typically apply load imbalance detection are clothes washers. A method of imbalance detection includes identifying parameter values that fluctuate with load imbalance over a predetermined sample period and determining a target parameter value from the identified parameter values. The method further includes calculating a parameter spread of the parameter values by comparing parameter values to the target parameter value. The method further includes converting the parameter spread into a weight value that reflects an imbalance condition.
Description
Technical field
The present invention relates generally to the Apparatus and method for that detects unbalance condition in device.
Background technology
Generally include as devices such as automatic washing machines and to be used for holding article or clothing and to be known rotating cylinder.Rotating cylinder holds in the enclosure and is perforated.The hole is injected in the rotating cylinder water and is gone out rotating cylinder with the article in the washing rotating cylinder and with sewage.Washing machine generally includes main control panel, and main control panel is controlled various circulations, generally includes cycles of washing, rotation circulation, rinse cycle and another rotation circulation subsequently.Inject rotating cylinder in cycles of washing and rinse cycle process water, and rotate or rotation owing to rotating cylinder in spin cycle, water is separated by centrifugal force.In addition, washing machine generally includes Vib., and when rotating cylinder rotated around Z-axis, this Vib. vibration was to help washing.Comprising in the machine of the rotating cylinder of horizontal rotational shaft, because clothing can be rolled rather than vibrate to help washing in washing process, therefore involving vibrations device not usually.
The device that comprises rotating cylinder can experience for example operation conditions of laod unbalance.During skewness, for example the laod unbalance in the device of washing machine will take place article in being contained in rotating cylinder in rotating cylinder.Article may skewness when loading in rotating cylinder, perhaps because rotating cylinder rotation and can make the article uneven distribution that becomes.For example, in the Z-axis washing machine, finish back water when being discharged from rotating cylinder when washing or rinse cycle, clothing gathers the bottom at rotating cylinder, and can distribution equably in rotating cylinder.When motor improves speed gradually carrying out next circulation time, clothing can move on to the side of rotating cylinder and become uneven.
Similarly, in horizontal axis washer, when clothing is not evenly distributed in the distribution cyclic process at machine, laod unbalance will take place.Laod unbalance for example can cause the high vibration of device and various inconvenience such as move.When causing laod unbalance owing to the center of gravity of rotating cylinder is no longer consistent with the geometrical axis of rotating cylinder or when unbalance, high vibration will taking place.High vibration can cause that device moves along its supporting surface, and for example, washing machine is traversing on the ground.In addition, high vibration can make rotating cylinder break away from from its collet.Another shortcoming of laod unbalance situation is that motor power is wasted in vibration and move goes up and be not used to rotate rotating cylinder fully.
Be used for preventing normally machinery of unbalanced prior art scheme, comprise the quality of the rotating cylinder that increases device, with the balancedunbalanced situation.
Another scheme that is used for detecting unbalance condition generally speaking is complicated, comprises ripple is compared and measured to the actual power consumption of rotating cylinder with estimating power consumption.An example of this scheme is described in the U.S. Patent No. 6640374, and wherein the magnitude of current of motor rotation rotating cylinder is compared with boundary value.
Therefore, be necessary to provide the Apparatus and method for of laod unbalance situation in a kind of improved pick-up unit, to reach the purpose of simplified design and manufacturing.
Summary of the invention
In one embodiment of the invention, the apparatus and method that to determine laod unbalance or out-of-balance conditions are provided.Usually the uneven device that detects of application load is a washing machine.The uneven method that detects is included in interior identification of predetermined sample cycle (identify) and determines the target component value with the parameter value of laod unbalance fluctuation with according to the parameter value of identification.This method also comprises by with parameter value and target component value relatively, thus the parameter spread of calculating parameter value.This method also comprises the gravimetric value that described parameter spread is converted to the reflection unbalance condition.
In another embodiment of the present invention, being included in computer program on the computer readable medium comprises discerning in the cycle with the parameter value of laod unbalance fluctuation with according to the parameter value of identification in predetermined sample and determines the target component value.This method also comprises by with parameter value and target component value relatively, thus the parameter spread of calculating parameter value.This method also comprises the gravimetric value that described parameter spread is converted to the reflection unbalance condition.
In another embodiment of the present invention, device comprises rotating cylinder, is mounted to around the axis line to rotate; Motor is used to make described rotating cylinder around the axis rotation; Processor is configured to determine laod unbalance; And storer, be used to receive and the instruction of stored parameter data and definite laod unbalance.Laod unbalance is definite like this: discern in the cycle with the parameter value of laod unbalance fluctuation with according to the parameter value of identification in predetermined sample and determine the target component value.This method also comprises by with parameter value and target component value relatively, thus the parameter spread of calculating parameter value.This method further comprises the gravimetric value that described parameter spread is converted to the reflection unbalance condition.
Description of drawings
Fig. 1 a is the diagrammatic sketch of horizontal axis washer;
Fig. 1 b is the diagram of expression horizontal axis washer;
Fig. 2 is the block scheme that detects the system of laod unbalance in one embodiment of the present of invention;
Fig. 3 is the process flow diagram of the method for detection laod unbalance situation;
Fig. 4 is the form that comprises the laod unbalance data;
Fig. 5 is the curve map of the laod unbalance data of Fig. 4.
Embodiment
One embodiment of the present of invention relate to the circuit and the method that detect laod unbalance in device that is easy to realize.
Referring now to Fig. 1 a,, what the horizontal axis washer of one embodiment of the present of invention was total is expressed as 10.Horizontal axis washer is included in the rotating cylinder that centers on horizontal rotational shaft in the housing.An alternative embodiment of the invention comprises the Z-axis washing machine, and wherein rotating cylinder rotates around Z-axis in housing.Those skilled in the art can utilize arbitrary structure to realize exemplary embodiment of the present invention described herein.Washing machine 10 comprises motor 12 and motor control unit 14 (seeing Fig. 1 b), and it can be integrated in the unit.Washing machine 10 comprises shell or housing 20, rotating cylinder or movable tube (" rotating cylinder ") 25, motor 12 and the motor control unit 14 of support fixation tube 22, wherein is provided with processor 102 in a known way.Also show rotating cylinder driving shaft 30.Rotating cylinder 25 is configured to hold the article (not shown) such as clothing that will wash.
In the horizontal axis washer structure, straight band drives (direct belt drive) and is configured to will be delivered to rotating cylinder 25 by the rotation that motor 12 is applied on the motor shaft 36 by rotating band 29.Fig. 1 b represents the side view of exemplary washing machine of the present invention.
In rotation circulation, the centrifugal force that the rotating cylinder of the water in the article by rotation applies is removed, and by hole (not shown) expelling tube.In rotation circulation, article or clothing are with first speed or be close on the wall that speed clings to rotating cylinder 25.Be close to (plaster) and be meant that rotating round-robin centrifugal force shifts clothing on the wall or structure of cylindrical shell onto.First speed or be close to speed in time cycle of maximal rate of the tube of second speed or rotation clothing because centrifugal force keeps the location.Those skilled in the art can determine to be close to speed and maximal rate.When clothing during inhomogeneous being close to, the laod unbalance situation will take place in whole rotating cylinder.
Fig. 2 has described the block scheme that detects the device of laod unbalance in the embodiments of the invention.The device that can be automatic washing machine 10 comprises shell 20, rotating cylinder 25, motor 12 and motor control unit 14, and motor control unit 14 comprises storer 101, processor 102 and sensor 103.Shell 20 holds can be equipped with for example rotating cylinder 25 of article such as clothing.Motor 12 drives rotating cylinder, and motor can be directly connected in rotating cylinder by band, clutch or direct coupling etc.Motor can be any kind that comprises induction motor etc.Sensor 103 can detect the rotating speed of motor shaft, and other parameter that fluctuates owing to laod unbalance, for example voltage amplitude, moment of torsion and current of electric.Can use the sensor of any kind, comprise Hall element, to detect the rotating speed of motor shaft.The executable instruction of storer 101 memory control device functions.Processor 102 is carried out the instruction that is stored in the storer 101.With respect to processor, storer external or built-in.Processor comprises any kind processor of microcontroller or microprocessor.According to method shown in Figure 3,102 times of execution command of processor to determine that unbalance condition occurs, and if detect sufficiently high imbalance or unbalance (OOB) situation, just adopt remedial measures.The measure of taking when detecting sufficiently high unbalance condition comprises and stops motor, as far as possible clothing in the balance rotating cylinder or the top speed that reduces to allow again.
Fig. 3 detects the process flow diagram of the method for laod unbalance situation for expression.This method comprises to be selected because the parameter of laod unbalance fluctuation, in this example, is the remain unchanged voltage amplitude of speed of requirement.This method also is included in identification parameter value 201 in the predetermined sample cycle, determines target component value 202, is the mean value of parameter value in this example.In the embodiment of an example, the parameter of measurement is a voltage amplitude, requires the speed that remains unchanged, and this voltage amplitude is measured with the Fixed Time Interval (promptly every 50ms) in predetermined sample cycle.Sample cycle represents the sample cycle that is scheduled to, the period of promptly reading parameter value in this time.Parameter value is stored in the data buffer of predetermined length in the storer.If buffer full just turns back to the section start of data buffer, so that supplemental characteristic can cover the oldest supplemental characteristic.The effect of this method is the effect with exercise data window or motion sample cycle (moving sample period).
In one embodiment, keep the required amplitude of present speed (current speed) to calculate by microprocessor software.Software increases or reduces voltage amplitude with the speed of remaining unchanged according to the input quantity from speed pickup 103.Speed pickup 103 can be used to detect the velocity perturbation of motor shaft 36.
This method also further provides the parameter spread (parameters pread) of 203 described parameter values above calculating.For example when buffer window was full of parameter value, perhaps in another embodiment, whenever the total amount that has reached parameter value in given sample cycle, then the calculating parameter value was expanded.And several sample cycles can replace the time that constitutes motion sample cycle.In one embodiment of the invention, parameter spread comprises the mean deviation based on the difference of the mean value of the parameter value of sample cycle and particular parameter value, though can use other to determine the method for parameter spread.
According to the present invention, processor 102 is compared each parameter value with the target component value, to obtain the mean deviation of parameter spread as follows.
Parameter spread shown in the top formula need be calculated the mean value X of the parameter value total amount of sample cycle, with each parameter value X
iDeduct the absolute value summation of mean value X, and then remove this summation with the predetermined quantity of parameter value, each parameter value can be the real-time read value of fluctuation parameter.Processor can be by obtaining parameter value data again from storer calculates the mean parameter error at interval on schedule.
In addition, parameter spread can be converted into actual weight value (Lbs or Kg) 204, and this actual weight value can be used for determining by following formula the existence 205 of unbalance condition:
OOB Lbs=parameter spread/loaded constant
Wherein, loaded constant calculates by the present load size that will be scheduled to linear formula and be applied to the washing machine rotating cylinder.The present load size can be determined by the whole bag of tricks that those skilled in the art determine, and be stored in the storer as gravimetric value (1bs or kg).Slope (slope) and deviation (off set) comprise that predetermined value, these predetermined values are to utilize the constant of known or predetermined unbalance load calibration.
Loaded constant=(load size) (slope)+deviation
The example of calibration comprises the mean deviation of the selected parameter of calculating each known unbalance load, and this known unbalance load is the known actual imbalance with gravimetric value (1bs or kg).When voltage was location parameter, voltage deviation was calculated as A/D value, wherein 1VDC=2.0277A/D unit.
In the embodiment of reality, loaded constant can be determined by the empirical data that is stored in the storer 101 with form.For this reason, loaded constant can utilize following formula to produce by the empirical data of using Fig. 4 for example and providing, and wherein parameter spread is the mean deviation that is provided among Fig. 4.
Loaded constant=parameter spread/actual OOB
When voltage amplitude was location parameter, the formula of loaded constant can as followsly be revised:
Loaded constant=parameter spread * speed/actual OOB
The correction of formula comprises multiply by motor speed with parameter spread, so that the voltage amplitude extension standardsization.Though above to the correction of formula be wish not necessarily, this is because when speed increases, amplitude is expanded decline.If speed is multiply by in the amplitude expansion, the loaded constant curve of gained is more smooth, and improved uneven calculating is provided.In current enforcement, OOB calculates optimised between 90 rotating cylinder RPM (or being close to speed) and about 150 rotating cylinder RPM.This scope can slightly change based on mechanical dynamic.
Referring now to Fig. 5,, the data line graph according to Fig. 4 form that slope 300 is shown has provided formula:
Loaded constant=-7.2623 * load size+152.46
Wherein, the load size is the actual weight of clothing in the rotating cylinder.
Unbalanced weight value (OOB Lbs) can utilize following formula to determine:
OOB=parameter spread/loaded constant
When the OOB value surpasses predetermined value, will detect unbalance condition.
Owing to but the present invention can realize with the conspicuous equivalent way of difference those skilled in the art, so the specific embodiment of the invention described above only is exemplary.Similarly, claimed scope can find in the claims, and is not limited to the description of the foregoing description.Therefore, above-mentioned specific embodiment can change or revise, and these modification within the scope of the present invention.
Claims (10)
1. the method for unbalance condition in the definite device comprises:
Discern the parameter value (201) that fluctuates with laod unbalance in cycle in predetermined sample;
Parameter value according to identification is determined target component value (202);
By relatively with parameter value and target component value, thus the parameter spread of calculating parameter value (203);
Described parameter spread is converted to the gravimetric value of reflection unbalance condition.
2. the process of claim 1 wherein that the described predetermined sample cycle comprises motion sample cycle, described target component value comprises mean value.
3. the method for claim 1 also comprises, recomputates described target component value periodically and discerns other parameter value.
4. the process of claim 1 wherein, calculate described parameter spread and comprise:
According to described parameter value calculation mean parameter value (203); And
Described mean parameter value and each described parameter value are compared to obtain the mean deviation value.
5. the process of claim 1 wherein, described parameter spread be converted to gravimetric value comprise:
Remove described parameter spread with the loaded constant value.
6. device comprises:
Rotating cylinder (25) is mounted to around the axis line and rotates;
Motor (12) is used to make described rotating cylinder around the axis rotation;
Processor (102) is configured to determine laod unbalance; And
Storer (101) is used to receive and the instruction of stored parameter data and definite laod unbalance;
Wherein, described laod unbalance is definite like this:
Discern the parameter value (201) that fluctuates with laod unbalance in cycle in predetermined sample;
Parameter value according to identification is determined target component value (202);
By relatively with parameter value and target component value, thus the parameter spread of calculating parameter value (203);
Described parameter spread is converted to the gravimetric value of reflection unbalance condition.
7. the device of claim 6, wherein, the described predetermined sample cycle comprises motion sample cycle, described target component value comprises mean value.
8. the device of claim 6, wherein, described laod unbalance is further by recomputating described target component value periodically and discerning other parameter value and determine.
9. the device of claim 6, wherein calculate described parameter spread and comprise:
According to described parameter value calculation mean parameter value; And
Described mean parameter value and each described parameter value are compared to obtain the mean deviation value.
10. the device of claim 6 wherein, is converted to gravimetric value with described parameter spread and comprises:
Remove described parameter spread with the loaded constant value, described loaded constant value is based on the weight of washing machine internal burden.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US11/877830 | 2007-10-24 | ||
| US11/877,830 US20090107185A1 (en) | 2007-10-24 | 2007-10-24 | Method and apparatus for determining an imbalance condition in an appliance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101419112A true CN101419112A (en) | 2009-04-29 |
Family
ID=40342512
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2008101499990A Pending CN101419112A (en) | 2007-10-24 | 2008-10-24 | Method and apparatus for determining an imbalance condition in an appliance |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US20090107185A1 (en) |
| EP (1) | EP2053151A2 (en) |
| CN (1) | CN101419112A (en) |
| CA (1) | CA2640828A1 (en) |
| MX (1) | MX2008013655A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102466538A (en) * | 2011-03-14 | 2012-05-23 | 无锡艾柯威科技有限公司 | Method for detecting load imbalance of variable frequency motor |
| CN103321012A (en) * | 2012-03-21 | 2013-09-25 | 普利莫斯公司 | Method for controlling the centrifugation process of a washing machine |
| CN103987890A (en) * | 2011-12-07 | 2014-08-13 | Bsh博世和西门子家用电器有限公司 | Base for a washing machine and washing machine |
| CN104452187A (en) * | 2014-11-21 | 2015-03-25 | 广东威灵电机制造有限公司 | Roller washing machine and unbalance detection method and device thereof |
| CN106637823A (en) * | 2016-12-13 | 2017-05-10 | 广东威灵电机制造有限公司 | Washing machine and dehydration control method and washing machine and dehydration control device |
| CN108801323A (en) * | 2017-04-26 | 2018-11-13 | 博西华电器（江苏）有限公司 | The method whether clothing care machine and detection clothing care machine install balance ring |
| CN116575213A (en) * | 2023-07-13 | 2023-08-11 | 珠海格力电器股份有限公司 | Washing machine load weighing method and washing machine |
| CN116575216A (en) * | 2023-07-13 | 2023-08-11 | 珠海格力电器股份有限公司 | Washing machine load weighing method and washing machine |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8875332B2 (en) | 2012-07-10 | 2014-11-04 | Whirlpool Corporation | Laundry treating appliance and method of operation |
| JP6654373B2 (en) * | 2015-08-04 | 2020-02-26 | 青島海爾洗衣机有限公司ＱｉｎｇＤａｏ Ｈａｉｅｒ Ｗａｓｈｉｎｇ Ｍａｃｈｉｎｅ Ｃｏ．，Ｌｔｄ． | Washing machine |
| US10060067B2 (en) | 2016-05-10 | 2018-08-28 | Haier Us Appliance Solutions, Inc. | Determining out of balance conditions of a washing machine |
| US11225746B2 (en) | 2018-08-27 | 2022-01-18 | Ecolab Usa Inc. | System and technique for extracting particulate-containing liquid samples without filtration |
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| KR100425723B1 (en) * | 2001-07-10 | 2004-04-03 | 엘지전자 주식회사 | Method of detecting the weight of laundry in washing machine of sensorless bldc motor |
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| KR20040059222A (en) * | 2002-12-28 | 2004-07-05 | 엘지전자 주식회사 | method for detecting unbalance of dehydration tub and method for controlling operation of washing machine by using the same |
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2007
- 2007-10-24 US US11/877,830 patent/US20090107185A1/en not_active Abandoned
-
2008
- 2008-10-09 CA CA002640828A patent/CA2640828A1/en not_active Abandoned
- 2008-10-17 EP EP08166863A patent/EP2053151A2/en not_active Withdrawn
- 2008-10-23 MX MX2008013655A patent/MX2008013655A/en not_active Application Discontinuation
- 2008-10-24 CN CNA2008101499990A patent/CN101419112A/en active Pending
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102466538A (en) * | 2011-03-14 | 2012-05-23 | 无锡艾柯威科技有限公司 | Method for detecting load imbalance of variable frequency motor |
| CN103987890A (en) * | 2011-12-07 | 2014-08-13 | Bsh博世和西门子家用电器有限公司 | Base for a washing machine and washing machine |
| CN103321012A (en) * | 2012-03-21 | 2013-09-25 | 普利莫斯公司 | Method for controlling the centrifugation process of a washing machine |
| CN103321012B (en) * | 2012-03-21 | 2017-03-01 | 联盟洗衣公司 | Method for controlling the centrifugal process in washing machine |
| CN104452187A (en) * | 2014-11-21 | 2015-03-25 | 广东威灵电机制造有限公司 | Roller washing machine and unbalance detection method and device thereof |
| CN106637823A (en) * | 2016-12-13 | 2017-05-10 | 广东威灵电机制造有限公司 | Washing machine and dehydration control method and washing machine and dehydration control device |
| CN106637823B (en) * | 2016-12-13 | 2019-03-15 | 广东威灵电机制造有限公司 | Washing machine and its dehydration controlling method and device |
| CN108801323A (en) * | 2017-04-26 | 2018-11-13 | 博西华电器（江苏）有限公司 | The method whether clothing care machine and detection clothing care machine install balance ring |
| CN116575213A (en) * | 2023-07-13 | 2023-08-11 | 珠海格力电器股份有限公司 | Washing machine load weighing method and washing machine |
| CN116575216A (en) * | 2023-07-13 | 2023-08-11 | 珠海格力电器股份有限公司 | Washing machine load weighing method and washing machine |
| CN116575213B (en) * | 2023-07-13 | 2023-09-05 | 珠海格力电器股份有限公司 | Washing machine load weighing method and washing machine |
| CN116575216B (en) * | 2023-07-13 | 2023-09-05 | 珠海格力电器股份有限公司 | Washing machine load weighing method and washing machine |
Also Published As
| Publication number | Publication date |
|---|---|
| EP2053151A2 (en) | 2009-04-29 |
| US20090107185A1 (en) | 2009-04-30 |
| MX2008013655A (en) | 2009-05-12 |
| CA2640828A1 (en) | 2009-04-24 |
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