CN108166219B - Foam detection and elimination method for washing machine - Google Patents
Foam detection and elimination method for washing machine Download PDFInfo
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- CN108166219B CN108166219B CN201611116650.8A CN201611116650A CN108166219B CN 108166219 B CN108166219 B CN 108166219B CN 201611116650 A CN201611116650 A CN 201611116650A CN 108166219 B CN108166219 B CN 108166219B
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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
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F39/00—Details of washing machines not specific to a single type of machines covered by groups D06F9/00 - D06F27/00
- D06F39/06—Arrangements for preventing or destroying scum
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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
- D06F2103/20—Washing liquid condition, e.g. turbidity
-
- 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
-
- 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
- D06F2105/08—Draining of washing liquids
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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
- D06F2105/48—Drum speed
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Control Of Washing Machine And Dryer (AREA)
Abstract
The invention discloses a method for detecting and eliminating foam of a washing machine, which comprises the steps of detecting water level pressure information in the acceleration process of a washing machine drum in the dehydration process of the washing machine, and executing an eliminating program according to the water level pressure information. The invention solves the problems of detection and elimination of residual foam in the washing process of the washing machine, mixes foam and water by rotating the drum at a high speed, increases the air pressure in the drum, further increases the water level pressure, then detects the water level pressure information in the drum by the pressure detection sensor or the water level sensor to obtain the residual foam content, and effectively improves the sensitivity of detecting the residual foam in the drum. The condition of foam residue in the roller is accurately obtained according to the water level pressure information, and the elimination program is executed in time, so that the washing effect of the washing machine is ensured.
Description
Technical Field
The invention relates to the field of washing machines, in particular to a method for detecting and eliminating foam of a washing machine.
Background
At present, along with the enhancement of the health consciousness of people, more and more users have higher and higher requirements on the washing effect of clothes. However, since the user cannot accurately put the detergent in the washing process, and the detergent is dragged and dropped too much, excessive foam is generated in the washing process, and the dewatering and the subsequent rinsing processes are affected during the dewatering, so that the detergent in the clothes is not rinsed cleanly.
Application No.: 201310646105.X discloses a method for detecting bubbles in a washing machine and the washing machine, wherein voltage is applied to an electrode device arranged in the washing machine, so as to detect whether the electrode device generates current, and if the electrode device generates current, it can be determined that the position of the electrode device has bubbles. The application needs to detect the bubbles through an additionally arranged electrode device, only causes the difficulty of installing the washing machine for detecting the bubbles in the washing water, and increases the cost.
In view of the above, the present invention is particularly proposed.
Disclosure of Invention
The technical problem to be solved by the invention is to overcome the defects of the prior art and provide a method for detecting and eliminating foam in a washing machine, wherein foam and water are mixed by rotating a roller at a high speed, so that the air pressure in the roller is increased, the water level pressure is further increased, then the residual foam content in the roller is detected by a pressure detection sensor, and the sensitivity for detecting residual foam in the roller is effectively improved. The condition of foam residue in the roller is accurately obtained according to the water level pressure information, and the elimination program is executed in time, so that the washing effect of the washing machine is ensured.
In order to realize the purpose, the invention adopts the following technical scheme: a method for detecting and eliminating foam in a washing machine comprises the steps of detecting water level pressure information in the process of increasing the speed of a drum of the washing machine in the dewatering process of the washing machine, and executing an eliminating program according to the water level pressure information.
Further, the elimination procedure includes controlling the opening/closing of the spray valve, and/or the opening/closing of the drain pump, and/or the drum rotation speed.
Further, the method comprises the steps of:
s1, a dewatering process, wherein the roller rotates at a first set speed;
s2, detecting the water level pressure information in the washing machine drum, judging whether the water level pressure information reaches a preset value, if so, controlling the drum to rotate at a second set speed, starting a spray valve and a drainage pump, and then executing the step S1; if not, go to step S3;
and S3, controlling the roller to rotate at a third set speed.
Further, step S0 is included before step S1, a drainage process is performed, and a drainage pump is started;
preferably, the drainage process is performed by a drainage pump in a first drainage time sequence;
more preferably, after the drain pump is started in step S2, the drain pump performs the draining in the second draining timing sequence.
Further, the information of the water level pressure in step 2 corresponds to a second set speed, and the corresponding relation is stored in the washing machine.
Further, the second set speed is in the range of 50rpm to 200 rpm;
preferably, the second set speed is in the range of 90rpm to 100 rpm.
Further, between the step S2 and the step S3, determining whether the rotation speed of the drum reaches a fourth set speed, if not, executing the step S1; if so, step S3 is performed.
Further, step S3 is followed by step S4: and controlling the set time of the drum dehydration operation.
Further, step a) is further included between step S3 and step S4: judging whether the drum reaches a preset rotating speed within a set time, if not, controlling the drum to rotate at a second set speed and starting a spray valve and a drainage pump, and then executing the step S3; if so, step S4 is performed.
Further, in the step S2, when the information of the water level pressure reaches a preset value, and/or when the drum does not reach a preset rotation speed within a set time in the step a, the spray valve is opened for a set time of spraying;
preferably, the set time is in the range of 20S to 40S.
Further, the first set speed, the third set speed, and the fourth set speed are all greater than the second set speed.
After adopting the technical scheme, compared with the prior art, the invention has the following beneficial effects:
1. the foam detection and elimination method of the washing machine solves the problem of detection and elimination of residual foam in the washing process of the washing machine, the foam and water are mixed by rotating the drum at a high speed at a first set speed, the air pressure in the drum is increased, the water level pressure is further increased, then the information of the water level pressure in the drum is detected by the pressure detection sensor, the residual foam content is obtained, and the sensitivity of detecting the residual foam in the drum is effectively improved.
2. The invention solves the problem of how to fully eliminate the foam, determines the second drainage time sequence of the drainage pump in the foam eliminating program according to the water level pressure information, so that more foam is accumulated in the drainage cavity of the drainage pump and then is discharged through the drainage pump, thereby improving the foam eliminating efficiency and realizing the function of fully eliminating the foam by the washing machine.
3. The method for detecting and eliminating the foam of the washing machine ensures that all residual foam in the roller is completely removed through multiple times of multi-parameter detection, improves the accuracy of foam detection of the washing machine, can also realize detection on the running condition of the motor within set time, ensures normal running of the motor and prolongs the service life of the motor.
Drawings
FIG. 1 is a flow chart of a method for detecting and removing bubbles in a washing machine according to an embodiment of the present invention;
fig. 2 is a flowchart illustrating a method for detecting and removing bubbles in a washing machine according to another embodiment of the present invention.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
Example one
As shown in fig. 1 and 2, the embodiment of the invention relates to a method for detecting and eliminating foam in a washing machine, which detects water level pressure information during the acceleration of a drum of the washing machine during the dehydration process of the washing machine, and executes an elimination procedure according to the water level pressure information.
Preferably, the information of the water level pressure includes one or any combination of a water level pressure value at a set time point in the drum speed-up process, a change value of the water level pressure in the drum speed-up process, and a change rate of the water level pressure in the drum speed-up process.
Specifically, in the embodiment, the foam condition in the drum is judged by detecting the water level and water pressure information of the drum, wherein the air pressure in the drum is increased in the process of high-speed operation of the foam, so that the water level pressure is increased, the residual foam in the drum can be obtained according to the information of the water level pressure of the drum detected by the pressure detection sensor at the moment, and the cleaning program is executed according to the residual foam in the drum. According to the embodiment, the condition of foam residue in the drum can be accurately acquired through the information of the water level pressure in the drum, and the elimination program is executed in time, so that the washing effect of the washing machine is ensured.
Meanwhile, in the embodiment, because the outer cylinder is communicated with the roller, the information of the water level pressure of the outer cylinder and the water level pressure of the roller are the same, the information of the water level pressure in the roller is directly detected through the water level sensor arranged on the outer cylinder, the arrangement of the foam detection device is simplified, the cost is saved, and the residual foam in the roller can be accurately detected.
Further, the elimination procedure includes controlling the opening/closing of the spray valve, and/or the opening/closing of the drain pump, and/or the drum rotation speed.
Further, the method comprises the steps of:
s1, a dewatering process, wherein the roller rotates at a first set speed;
s2, detecting the water level pressure information in the washing machine drum, judging whether the water level pressure information reaches a preset value, if so, controlling the drum to rotate at a second set speed, starting a spray valve and a drainage pump, and then executing the step S1; if not, go to step S3;
and S3, controlling the roller to rotate at a third set speed.
Specifically, in the present embodiment, in step S1, the drum rotates at a first set speed with a higher rotation speed to discharge a part of the foam and water in the drum; make the foam can mix with water at the rotation in-process foam of higher rotational speed, increased the atmospheric pressure in the cylinder, and then increaseed water level pressure, then rethread pressure detection sensor, perhaps water level sensor detect the residual foam content in the cylinder, effectively improved the sensitivity that detects residual foam in the cylinder to the realization is fully clear away the processing to the residual foam in the cylinder.
In the embodiment, repeated detection and repeated removal of residual foam are realized, and the washing effect of the washing machine is improved.
Further, step S0 is included before step S1, a drainage process is performed, and a drainage pump is started;
preferably, the drainage process is performed by a drainage pump in a first drainage time sequence;
more preferably, after the drain pump is started in step S2, the drain pump performs the draining in the second draining timing sequence.
Specifically, in the present embodiment, the first drainage time sequence of the drainage pump in the drainage process is uninterrupted drainage, and the drainage is delayed for a first set time; and the water in the drum is sufficiently discharged. The second drainage sequence of the drainage pump is to drain for a second set time and stop for a third set time, preferably, the first set time is 5S-15S, the second set time is 25S-35S, and the third set time is 1S-9S. After the drainage pump is started in step S2, a second drainage time sequence is determined according to the condition of residual foam, more foam is accumulated in the drainage chamber of the drainage pump through alternate rotation and stop in the second drainage time sequence, and then the foam is drained through the drainage pump, so that the foam removing efficiency is improved, and the function of fully removing foam in the washing machine is realized.
Further, the information of the water level pressure in the step 2 corresponds to a second set speed, and the corresponding relation is stored in the washing machine;
further, the second set speed is in the range of 50rpm to 200 rpm;
preferably, the second set speed is in the range of 90rpm to 100 rpm.
Specifically, in this embodiment, after detecting the residual foam in the drum, the foam removing process is performed by reducing the rotation speed of the drum and keeping the rotation speed at a lower rotation speed, which is more beneficial to the discharge of the foam, so as to achieve the effect of completely removing the foam.
Further, between the step S2 and the step S3, determining whether the rotation speed of the drum reaches a fourth set speed, if not, executing the step S1; if so, step S3 is performed.
Further, step S3 is followed by step S4: and controlling the set time of the drum dehydration operation.
Further, in step S2, after the information of the water level pressure reaches a preset value, the spray valve is opened for a set time of spraying;
preferably, the set time is in the range of 20S to 40S.
Further, the first set speed, the third set speed, and the fourth set speed are all greater than the second set speed.
Finally, step S4 is executed, the drum stops rotating, the drain pump is turned off, and the corresponding procedure of the washing machine is ended.
In summary, the method for detecting and eliminating bubbles in the washing machine of the present embodiment has the following advantages:
1. according to the embodiment, the foam detection and elimination method of the washing machine solves the problem of detecting and eliminating residual foam in the washing process of the washing machine, the drum is rotated at a high speed at a first set speed in the embodiment to mix the foam with water, so that the air pressure in the drum is increased, the water level pressure is increased, then the pressure detection sensor or the water level sensor is used for detecting the water level pressure information in the drum and obtaining the residual foam content, and the sensitivity of detecting the residual foam in the drum is effectively improved.
2. The method for detecting and eliminating the foam of the washing machine solves the problem of how to fully eliminate the foam, and in the embodiment, the second drainage time sequence of the drainage pump in the foam eliminating program is determined according to the information of the water level pressure, so that more foam is accumulated in the drainage cavity of the drainage pump and then is discharged through the drainage pump, the foam eliminating efficiency is improved, and the function of fully eliminating the foam by the washing machine is realized.
Example two
As shown in fig. 2, the present embodiment provides a method for detecting and removing bubbles in a washing machine, which detects water level pressure information during the acceleration of a drum of the washing machine during the dehydration process of the washing machine, and performs a removal process according to the water level pressure information.
Further, the elimination procedure includes controlling the opening/closing of the spray valve, and/or the opening/closing of the drain pump, and/or the drum rotation speed.
Further, the method comprises the steps of:
s1, a dewatering process, wherein the roller rotates at a first set speed;
s2, detecting the water level pressure information in the washing machine drum, judging whether the water level pressure information reaches a preset value, if so, controlling the drum to rotate at a second set speed, starting a spray valve and a drainage pump, and then executing the step S1; if not, go to step S3;
and S3, controlling the roller to rotate at a third set speed.
Further, step S0 is included before step S1, a drainage process is performed, and a drainage pump is started;
preferably, the drainage process is performed by a drainage pump in a first drainage time sequence;
more preferably, after the drain pump is started in step S2, the drain pump performs the draining in the second draining timing sequence.
Further, the information of the water level pressure in step 2 corresponds to a second set speed, and the corresponding relation is stored in the washing machine.
Further, the second set speed is in the range of 50rpm to 200 rpm;
preferably, the second set speed is in the range of 90rpm to 100 rpm.
Further, between the step S2 and the step S3, determining whether the rotation speed of the drum reaches a fourth set speed, if not, executing the step S1; if so, the next step is performed.
Further, step S3 is followed by step S4: and controlling the set time of the drum dehydration operation.
Further, step S3 is followed by step a): judging whether the drum reaches a preset rotating speed within a set time, if not, controlling the drum to rotate at a second set speed and starting a spray valve and a drainage pump, and then executing the step S3; if so, step S4 is performed.
Specifically, whether the cylinder reaches predetermined rotational speed in this embodiment still through detecting the settlement time, judge whether remain the foam in the cylinder, then clear away through the clearance foam procedure of rethread, avoid pressure detection sensor, perhaps water level sensor to detect water level water pressure information inaccurate, cause the problem that can't thoroughly clear away the foam. Meanwhile, the problem that the load of the motor is increased and the service life of the motor is shortened due to the fact that residual foam is generated in the high-speed rotation process of the roller is solved, whether the preset rotating speed of the roller is achieved within the set time can be detected, whether the motor is in a normal working state can be detected, if the motor is not in the normal working state, the rotating speed and the load of the motor are reduced, the use safety of the motor is guaranteed, if the motor is in the normal state, the motor is controlled to run at the set time at a high speed to dewater at the high speed, normal running of the motor is achieved, and the service life of the.
Meanwhile, in the embodiment, repeated detection and repeated removal of residual foam are realized by repeatedly detecting whether the drum reaches the preset rotating speed within the set time, so that the washing effect of the washing machine is improved. On the other hand, the motor can be ensured to execute the high-speed rotation dehydration program under the normal working state, and the service life of the motor is prolonged.
Further, after the drainage pump is started in the step A), the drainage pump performs drainage according to a third drainage time sequence;
preferably, the third drainage time sequence is related to the rotating speed reached by the drum within the set time, and the corresponding relation is stored in the washing machine.
The third drainage time sequence of the drainage pump is a fourth set time of drainage and stops the fifth set time, preferably, the third set time is 25S-35S, and the fourth set time is 1S-9S. After the drainage pump is started in the step A), a third drainage time sequence is determined according to the condition of residual foam, more foam is accumulated in the drainage cavity of the drainage pump through the rotation and stop at intervals in the third drainage time sequence, and then the foam is discharged through the drainage pump, so that the foam removing efficiency is improved, and the function of fully removing the residual foam in the drum of the washing machine is realized.
Further, step S4 is followed by step S5: and controlling the set time of the drum dehydration operation.
In the step S2, when the information of the water level pressure reaches a preset value, and/or in the step S4, when the roller does not reach a preset rotating speed within a set time, the spray valve is opened for a set time of spraying;
preferably, the set time is in the range of 20S to 40S.
Further, the first set speed, the third set speed, and the fourth set speed are all greater than the second set speed.
Finally, step S4 is executed, the drum stops rotating, and the drain pump is turned off. And ends the corresponding process of the washing machine.
In summary, the method for detecting and eliminating bubbles in the washing machine of the present embodiment has the following advantages:
1. according to the foam detection and elimination method of the washing machine, all residual foams in the drum are completely eliminated through multiple times of multi-parameter detection, the accuracy of foam detection of the washing machine is improved, the operation condition of the motor within the set time can be detected, the normal operation of the motor is ensured, and the service life of the motor is prolonged.
EXAMPLE III
The present embodiment is different from the above embodiments in that step S2 of the present embodiment is replaced with step S2', information of water level pressure in the drum of the washing machine is detected, weight information of the laundry is obtained, whether foam remains in the drum is judged according to the information of water level pressure and the weight information, if yes, the drum is controlled to rotate at a second set speed and the spray valve and the drain pump are started, and then step S1 is executed; if not, step S3 is performed.
The embodiments in the above embodiments can be further combined or replaced, and the embodiments are only used for describing the preferred embodiments of the present invention, and do not limit the concept and scope of the present invention, and various changes and modifications made to the technical solution of the present invention by those skilled in the art without departing from the design idea of the present invention belong to the protection scope of the present invention.
Claims (6)
1. A method for detecting and eliminating foam of a washing machine is characterized in that: the method comprises the steps of detecting water level pressure information in the acceleration process of a washing machine drum in the dehydration process of the washing machine, and executing an elimination program according to the water level pressure information;
the water level pressure information comprises one or a combination of a water level pressure value at a set time point in the drum acceleration process, a water level pressure change value in the drum acceleration process and a water level pressure change rate in the drum acceleration process;
the method comprises the following steps:
s1, a dewatering process, wherein the roller rotates at a first set speed;
s2, detecting the information of the water level pressure in the washing machine drum, judging whether the information of the water level pressure reaches a preset value, if so, controlling the drum to rotate at a second set speed and starting a spray valve and a drainage pump, and after starting the drainage pump, the drainage pump discharges water at a second drainage time sequence of the rotation stop at intervals of a second set time and a third set time; then, step S1 is executed; if not, go to step S3;
and S3, controlling the roller to rotate at a third set speed.
2. The method of claim 1, wherein the step of detecting and removing bubbles comprises: step S0 is further included before the step S1, a drainage process is executed, and a drainage pump is started;
the drainage process is characterized in that the drainage pump drains water according to a first drainage time sequence.
3. The method of claim 1, wherein the step of detecting and removing bubbles comprises:
step 2, the information of the water level pressure corresponds to a second set speed, and the corresponding relation is stored in the washing machine;
the second set speed is in the range of 50rpm to 200 rpm.
4. A method for detecting and removing bubbles in a washing machine according to any one of claims 1 to 3, wherein: the step between the step S2 and the step S3 further includes judging whether the rotation speed of the drum reaches a fourth set speed, if not, executing the step S1; if so, step S3 is performed.
5. A method for detecting and removing bubbles in a washing machine according to any one of claims 1 to 3, wherein: step S4 is also included after step S3: and controlling the set time of the drum dehydration operation.
6. The method of claim 4, wherein the step of detecting and removing bubbles comprises: the first set speed, the third set speed, and the fourth set speed are all greater than the second set speed.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611116650.8A CN108166219B (en) | 2016-12-07 | 2016-12-07 | Foam detection and elimination method for washing machine |
| PCT/CN2017/115015 WO2018103698A1 (en) | 2016-12-07 | 2017-12-07 | Method for detecting and removing foams for use in washing machines |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611116650.8A CN108166219B (en) | 2016-12-07 | 2016-12-07 | Foam detection and elimination method for washing machine |
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| CN108166219A CN108166219A (en) | 2018-06-15 |
| CN108166219B true CN108166219B (en) | 2020-08-14 |
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| CN109338666A (en) * | 2018-11-29 | 2019-02-15 | 广东格兰仕集团有限公司 | A kind of defoaming clean method of washing machine |
| CN110331562B (en) * | 2019-06-14 | 2023-07-04 | 青岛海尔洗涤电器有限公司 | Defoaming method of washing machine and washing machine |
| CN112376206B (en) * | 2019-07-29 | 2022-03-11 | 无锡小天鹅电器有限公司 | Washing machine dehydration control method and device, washing machine and storage medium |
| CN112663296B (en) * | 2019-09-27 | 2023-12-15 | 佛山海尔滚筒洗衣机有限公司 | Foam discharging method of drum washing machine |
| CN112695493B (en) * | 2019-10-21 | 2022-04-01 | 无锡小天鹅电器有限公司 | Clothes treatment equipment, drainage control method and device thereof and storage medium |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5675199A (en) * | 1979-11-26 | 1981-06-22 | Tokyo Shibaura Electric Co | Full automatic washing machine |
| KR20090061464A (en) * | 2007-12-11 | 2009-06-16 | 엘지전자 주식회사 | Method for detecting bubble of washing machine |
| JP2009142612A (en) * | 2007-12-18 | 2009-07-02 | Toshiba Corp | Washing machine |
| CN101498094B (en) * | 2009-03-11 | 2011-05-04 | 深圳和而泰智能控制股份有限公司 | Foam detecting method, foam detection device and drum-type washing machine |
| CN102031666A (en) * | 2010-12-13 | 2011-04-27 | 海尔集团公司 | Water level monitoring method of washing machine and full-automatic washing machine |
| CN102644181A (en) * | 2012-05-22 | 2012-08-22 | 江苏新安电器有限公司 | Defoaming device for drum washing machine and defoaming method therefor |
| CN104762789B (en) * | 2015-03-30 | 2018-10-23 | 无锡小天鹅股份有限公司 | Washing machine and its dehydration controlling method |
| CN105544145B (en) * | 2016-02-01 | 2018-05-18 | 珠海格力电器股份有限公司 | Roller washing machine and its foam detecting method |
| CN105862328A (en) * | 2016-05-26 | 2016-08-17 | 无锡小天鹅股份有限公司 | Defoaming method during dewatering of washing machine and dewatering method |
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| CN108166219A (en) | 2018-06-15 |
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