CN109576955A - A kind of roller washing machine and its foam detecting method - Google Patents
A kind of roller washing machine and its foam detecting method Download PDFInfo
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- CN109576955A CN109576955A CN201710906213.4A CN201710906213A CN109576955A CN 109576955 A CN109576955 A CN 109576955A CN 201710906213 A CN201710906213 A CN 201710906213A CN 109576955 A CN109576955 A CN 109576955A
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- light transmittance
- washing machine
- foam
- detection method
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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
- D06F34/22—Condition of the washing liquid, 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
- D06F33/00—Control of operations performed in washing machines or washer-dryers
-
- 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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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Control Of Washing Machine And Dryer (AREA)
Abstract
The invention discloses a kind of roller washing machines, it is characterized in that, turbidity transducer (2) are set on the outer drum for drum washing machine bottom surface (1), the turbidity transducer (2) is arranged at outer barrel bottom surface (1) preset height, the turbidity transducer (2) is able to detect that the light transmittance of foam, and light transmittance is sent to the computer board of washing machine.The beneficial effects of the present invention are: more accurate to washing water bubble situation detection.
Description
Technical field
The present invention relates to washing machine field, it is specifically related to a kind of roller washing machine and its foam detecting method.
Background technique
It is high foaming detergent that there are many detergent used in roller washing machine, and user is using high foaming detergent laundry clothes
When, when detergent can generate a large amount of foam after completely dissolution in cylinder.When roller washing machine is in dehydration, since foam is too many
Or foam can be overflowed by hopper etc. and extraneous blow vent, pollution is brought to user's Residential environments；Alternatively, due to bubble
Foam is excessive and causes the security risks such as electrical part is short-circuit, burns, leaks electricity；Alternatively, since the excessive barrel washing machine dehydration of foam turns
Speed does not increase and reduces the performances such as dehydration rate, rinsing rate.
A kind of washing machine of the disclosure of the invention of publication No. CN105671857A, comprising: steel ladle；Motor, the motor are used
In the driving steel ladle operating；Current detection means, the current detection means are used to detect the operating current of the motor；
Control device, the control device are connected with the current detection means, and the control device is by controlling turning for the motor
Speed is to drive the steel ladle to operate, and when the washing machine is dehydrated, if the operating current of the motor be greater than it is pre-
If current threshold, the control device controls the washing machine and carries out defoaming treatment.
But foam is generated in the operating current of motor and washing water and has no direct relationship, such as may in washing water
Containing seldom high foaming detergent, the turbidity very little of washing water, when being almost clear water, no matter the operating current of motor have it is much,
The foam generated in washing water is also seldom, can phase clothing gradually wash clean phase after washing according to the method that above-mentioned patent provides
Between judge by accident.
Summary of the invention
It is an object of the present invention to provide a kind of washing machine foam detection methods, so as to washing water bubble situation inspection
It is more accurate to survey.
Specifically, the present invention is achieved through the following technical solutions:
Turbidity transducer, the turbidity sensing is arranged in a kind of roller washing machine on the outer drum for drum washing machine bottom surface
Device is arranged at the preset height of outer barrel bottom surface, and the turbidity transducer is able to detect that the light transmittance of foam, and light transmittance is sent out
Give the computer board of washing machine.
A kind of washing machine foam detection method, using roller washing machine above-mentioned, the method includes the steps:
Step 1: the initialization of light transmittance a reference value；
Step 2: carrying out light transmittance detection；
Step 3: judging whether light transmittance is up to standard, if it is not, step 4 is executed, if so, executing step 2；
Step 4: executing defoaming operation, terminate later.
Preferably, after step 3, the method also includes:
Step 3 ': light transmittance detects number from adding 1, executes step 3 later "；
Step 3 ": judging whether light transmittance detection number reaches default first limit value, if so, step 4 is executed, if
It is no, execute step 2.
Preferably, after step 4, the method also includes:
Step 5: light transmittance detects number and resets；
Step 6: defoaming number of operations adds 1 certainly；
Step 7: judging to defoam whether number of operations reaches default second limit value, if so, terminating, if it is not, then holding
Row step step 2.
Preferably, after step 7 is judged as NO, the method also includes:
Step 8: motor stalls preset time, executes step 2 later.
Preferably, the step 1 includes:
Step 11: washing machine inflow；
Step 12: whether current judgement is to intake for the first time, if so, step 13 is executed, if it is not, then terminating；
Step 13: judge in washing machine into water light transmittance it is whether normal, if so, 14 are thened follow the steps, if it is not, then
Execute step 15；
Step 14: after water inlet end, determining light transmittance a reference value, terminate later；
Step 15: setting abnormality terminates later.
Preferably, the step 14 includes:
It is continuous to read preset times light transmittance values after water inlet end preset duration, calculation is taken after removing maximum value and minimum value
Art average value terminates later as benchmark light transmittance values A.
Preferably, the step 2 includes:
Step 21: judging whether that abnormality is arranged, if so, terminating, if it is not, thening follow the steps 22；
Step 22: reading current light transmittance values B before motor rotates, execute step 3 later；
The step 3 includes:
Step 31: judge whether current light transmittance values B is less than the product of benchmark light transmittance values A and X%, if so, if so,
Step 4 is executed, if it is not, thening follow the steps 22, wherein X% is preset percentages.
Preferably, after the step 31 is judged as YES, the step 3 includes:
Step 32: light transmittance detects number and adds 1 certainly；
Step 33: judge whether light transmittance detection number is greater than default first limit value, if so, 4 are thened follow the steps, if
It is no, then follow the steps 22.
The beneficial effects of the present invention are: more accurate to washing water bubble situation detection.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.
Fig. 1 (a) is a kind of the first diagram of outer drum for drum washing machine bottom surface provided by the invention；
Fig. 1 (b) is a kind of the second diagram of outer drum for drum washing machine bottom surface provided by the invention；
Fig. 1 (c) is a kind of laundry drum machine testing foam light transmittance schematic diagram provided by the invention；
Fig. 2 is a kind of washing machine foam detection method schematic diagram that first embodiment of the invention provides；
Fig. 3 is a kind of washing machine foam detection method schematic diagram that second embodiment of the invention provides；
Fig. 4 is a kind of washing machine foam detection method schematic diagram that third embodiment of the invention provides；
Fig. 5 is a kind of washing machine foam detection method schematic diagram that fourth embodiment of the invention provides；
Fig. 6 is that step S101 specifically executes the first schematic diagram of method；
Fig. 7 is that step S101 specifically executes the second schematic diagram of method；
Fig. 8 is that step S102 and S103 specifically execute the first schematic diagram of method；
Fig. 9 is that step S102 and S103 specifically execute the second schematic diagram of method；
Figure 10 is a kind of washing machine foam detection method schematic diagram that fifth embodiment of the invention provides.
Description of symbols
Further clearly to illustrate the connection relationship between structure of the invention and each component, the following drawings mark is given
Note, and be illustrated.
Outer barrel bottom surface 1；Turbidity transducer 2；Water inlet 3.
Description of symbols through the above attached drawings can be more clearly understood and illustrate this hair in conjunction with the embodiment of the present invention
Bright technical solution.
Specific embodiment
Example embodiments are described in detail here, and the example is illustrated in the accompanying drawings.Following description is related to
When attached drawing, unless otherwise indicated, the same numbers in different drawings indicate the same or similar elements.Following exemplary embodiment
Described in embodiment do not represent all embodiments consistented with the present invention.On the contrary, they be only with it is such as appended
The example of device and method being described in detail in claims, some aspects of the invention are consistent.
It is only to be not intended to limit the invention merely for for the purpose of describing particular embodiments in terminology used in the present invention.
It is also intended in the present invention and the "an" of singular used in the attached claims, " described " and "the" including majority
Form, unless the context clearly indicates other meaning.It is also understood that term "and/or" used herein refers to and wraps
It may be combined containing one or more associated any or all of project listed.
It will be appreciated that though various information, but this may be described using term first, second, third, etc. in the present invention
A little information should not necessarily be limited by these terms.These terms are only used to for same type of information being distinguished from each other out.For example, not departing from
In the case where the scope of the invention, the first information can also be referred to as the second information, and similarly, the second information can also be referred to as
One information.Depending on context, word as used in this " if " can be construed to " ... when " or " when ...
When " or " in response to determination ".
The present invention will be described in detail by way of examples below.
As shown in Fig. 1 (a) and Fig. 1 (b), a kind of roller washing machine, on the outer drum for drum washing machine bottom surface 1, setting
Turbidity transducer 2, the turbidity transducer 2 can detect whether to be completely covered with the foam by detecting light transmittance, and will test situation
It is sent to the computer board of washing machine.Specifically, the turbidity transducer 2 be arranged in the foam early warning line height of outer barrel bottom surface 1 with
On, the maximum water level is the peak level for allowing the water surface to reach when roller is intake, and the foam early warning line is permitted to be preset
Perhaps the ceiling for accumulation that foam reaches, as shown in Fig. 1 (c), the difference in height of foam early warning line and maximum water level is H, then can will be turbid
The distance that degree sensor 2 is positioned above maximum water level is more than or equal at H, when turbidity transducer 2 detects that light transmittance is lower than
When certain value, that is, illustrate that foam height meets or exceeds foam early warning line at this time, there are the danger that foam is overflowed from washing machine.
Further, since the water inlet in outer barrel is generally arranged at the top of outer barrel, the turbidity transducer 2 can be arranged
The lower section of water inlet 3 on outer barrel of washing machine, when so that washing machine being intake every time, water flow can to the turbidity transducer 2 into
Row rinses, so that foam will not remain on turbidity transducer, so that the erroneous judgement situation of turbidity transducer substantially reduces.
As shown in Fig. 1 (c), central idea of the invention is to utilize to be arranged more than 1 foam early warning line height of outer barrel bottom surface
The turbidity transducer 2 at place detects the light transmittance values for floating on the foam in laundry water level, executes defoaming according to light transmittance values determination
Operation.
As shown in Fig. 2, for a kind of washing machine foam detection method schematic diagram that first embodiment of the invention provides, the side
Method comprising steps of
S101: light transmittance a reference value initialization.
In the presence of no foam, the light transmittance of air, can be by the value range in a certain range value in roller
It makes even and is disposed as the initialization a reference value of light transmittance, after foam coverage turbidity transducer, turbidity transducer is measured saturating
Light rate value can be lower, which can carry out light transmittance judgement whether up to standard by standard of the light transmittance a reference value,
Step S101 is the operation executed during washing machine inflow.
S102: light transmittance detection is carried out.
Specifically, the light transmittance is by the turbidity transducer, the air into roller is detected to obtain, step S101
It is the operation carried out during washing of drum type washing machine clothing.
S103: judging whether light transmittance is up to standard, if it is not, S104 is executed, if so, executing S102.
S104: defoaming operation is executed, is terminated later.
A kind of washing machine foam detection method that first embodiment of the invention provides, by being arranged on outer barrel of washing machine
Whether turbidity transducer detects the light transmittance in roller, up to standard according to light transmittance, to determine the need for executing defoaming operation, makes
It is more accurate to the opportunity judgement for executing defoaming operation to obtain.
As shown in figure 3, for a kind of washing machine foam detection method schematic diagram that second embodiment of the invention provides, first
On the basis of embodiment, after step s 103, the method also includes:
S103 ': light transmittance detects number from adding 1, executes S103 " later.
S103 ": judging whether light transmittance detection number reaches default first limit value, if so, S104 is executed, if it is not,
Execute S102.
A kind of washing machine foam detection method that second embodiment of the invention provides is right on the basis of first embodiment
Light transmittance detection number is counted, and only when light transmittance detection number reaches default first limit value, is just determined as really
Real the case where carrying out defoaming operation, avoid the erroneous judgement to needing to defoam situation.
As shown in figure 4, for a kind of washing machine foam detection method schematic diagram that third embodiment of the invention provides, second
On the basis of embodiment, after step s 104, the method also includes:
S105: light transmittance detects number and resets.
S106: defoaming number of operations adds 1 certainly.
S107: judging to defoam whether number of operations reaches default second limit value, if so, terminating, if it is not, then executing
Step S102.
A kind of washing machine foam detection method that third embodiment of the invention provides increases on the basis of second embodiment
Add to the statistics for executing defoaming number of operations, when defoaming number of operations not up to default second limit value, still to saturating
Light rate carry out detect and foam is defoamed, if defoaming number of operations reach default second limit value, illustrate into
The defoaming operations of enough times is gone, the foam in laundry water is largely eliminated, can be with there is no danger such as foam overflows
No longer carry out defoaming operation.
As shown in figure 5, for a kind of washing machine foam detection method schematic diagram that fourth embodiment of the invention provides, in third
On the basis of embodiment, after step S107 is judged as NO, the method also includes:
S108: motor stalls preset time, executes S102 later.
A kind of washing machine foam detection method that fourth embodiment provides increases electricity on the basis of 3rd embodiment
The operation of machine stalling enables to the foam in laundry water to float after motor stalling, if the foam in laundry water is more, carries out
After the floating of a period of time, foam will not have turbidity transducer, so that the light transmittance that turbidity transducer measures is more representative of bubble
The case where foam covers.
As shown in fig. 6, method schematic diagram is specifically executed for step S101 in foregoing individual embodiments, comprising steps of
S1011: washing machine inflow.
S1012: whether current judgement is to intake for the first time, if so, S1013 is executed, if it is not, then terminating.
S1013: judge in washing machine into water light transmittance it is whether normal, if so, S1014 is executed, if it is not, then holding
Row S1015.
S1014: it after water inlet end, determines light transmittance a reference value, terminates later.
S1015: setting abnormality terminates later.
The purpose of step S101 is initialization light transmittance a reference value, determines light transmittance base with the light transmittance of first time water inlet
Quasi- value then directly terminates, the initialization operation without light transmittance a reference value if not intaking for the first time.
As shown in fig. 7, the step S1014 is specifically included on the basis of Fig. 6:
S1014 ': it is continuous to read preset times light transmittance values after water inlet end preset duration, remove maximum value and minimum value
After take arithmetic mean of instantaneous value, as benchmark light transmittance values A, terminate later.
To first time, the light transmittance value of water inlet is multiple, carries out average calculating operation, acquires benchmark light transmittance values A.
Fig. 6 and step S101 shown in fig. 7 can as Fig. 2~Fig. 5 it is any in step S101.
As shown in figure 8, in foregoing individual embodiments step S102 and S103 specifically execute method comprising steps of
S1021: judging whether that abnormality is arranged, if so, terminating, if it is not, then executing S1022.
S1022: current light transmittance values B is read before motor rotates, executes S1031 later.
Before motor rotation, foam is floated on above laundry water, when foam reaches it is a certain amount of when, the turbidity can be covered and passed
Sensor, if the current light transmittance values B at this moment read illustrates that foam volume is larger, need to carry out defoaming operation lower than to a certain degree.
S1031: judging whether current light transmittance values B is less than the product of benchmark light transmittance values A and X%, if so, if so,
S104 is executed, if it is not, then executing S1022, wherein X% is preset percentages.
Specifically, as shown in figure 9, after the step S1031 is judged as YES, step S103 is also on the basis of Fig. 8
Include:
S1032: light transmittance detects number and adds 1 certainly.
S1033: judging whether light transmittance detection number is greater than default first limit value, if so, S104 is executed, if
It is no, then execute S1022.
Step S1032 and step S1033 counts light transmittance detection number, only when light transmittance detection number reaches
When default first limit value, just it is determined as carrying out the case where defoaming operates really, avoids to needing to defoam situation
Erroneous judgement.
Step S102 and step S103 in Fig. 8 and Fig. 9 can as Fig. 2~Fig. 5 it is any in step S102 and step
S103。
Figure 10 is a kind of washing machine foam detection method that fifth embodiment of the invention provides, the method includes the steps:
S1011: washing machine inflow.
S1012: whether current judgement is to intake for the first time, if so, S1013 is executed, if it is not, then terminating.
S1013: judge in washing machine into water light transmittance it is whether normal, if so, S1014 ' is executed, if it is not, then
Execute S1015.
S1014 ': it is continuous to read preset times light transmittance values after water inlet end preset duration, remove maximum value and minimum value
After take arithmetic mean of instantaneous value, as benchmark light transmittance values A, terminate later.
S1015: setting abnormality terminates later.
S1021: starting to wash, and judges whether that abnormality is arranged, if so, S109 and S110 is executed, if it is not, then executing
S1022。
S1022: current light transmittance values B is read before motor rotates, executes S1031 later.
S1031: judging whether current light transmittance values B is less than the product of benchmark light transmittance values A and X%, if so, if so,
S1032 is executed, if it is not, then executing S1022, wherein X% is preset percentages.
S1032: light transmittance detects number and adds 1 certainly.
S1033: judging whether light transmittance detection number is greater than default first limit value, if so, S104 is executed, if
It is no, then execute S1022.
S104: defoaming operation is executed.
S105: light transmittance detects number and resets.
S106: defoaming number of operations adds 1 certainly.
S107: judging to defoam whether number of operations reaches default second limit value, if so, terminating, if it is not, then executing
Step S108.
S108: motor stalls preset time, executes S1022 later.
S109: pressure washing is carried out.
That is, the turbidity information that the roller washing machine is no longer obtained using turbidity transducer is foundation, but carry out compulsory
Common washing operation.
S110: the roller washing machine is alarmed.
The roller washing machine is alarmed, and turbidity transducer failure is prompted the user with.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Within mind and principle, any modification, equivalent substitution, improvement and etc. done be should be included within the scope of the present invention.
Claims (9)
1. a kind of roller washing machine, which is characterized in that turbidity transducer is arranged on the outer drum for drum washing machine bottom surface (1)
(2), the turbidity transducer (2) is arranged at outer barrel bottom surface (1) preset height, and the turbidity transducer (2) is able to detect that
The light transmittance of foam, and light transmittance is sent to the computer board of washing machine.
2. a kind of washing machine foam detection method, uses roller washing machine described in claim 1, which is characterized in that the side
Method comprising steps of
Step 1: the initialization of light transmittance a reference value；
Step 2: carrying out light transmittance detection；
Step 3: judging whether light transmittance is up to standard, if it is not, step 4 is executed, if so, executing step 2；
Step 4: executing defoaming operation, terminate later.
3. washing machine foam detection method according to claim 2, which is characterized in that after step 3, the method is also wrapped
It includes:
Step 3 ': light transmittance detects number from adding 1, executes step 3 later "；
Step 3 ": judging whether light transmittance detection number reaches default first limit value, if so, step 4 is executed, if it is not, holding
Row step 2.
4. washing machine foam detection method according to claim 3, which is characterized in that after step 4, the method is also
Include:
Step 5: light transmittance detects number and resets；
Step 6: defoaming number of operations adds 1 certainly；
Step 7: judging to defoam whether number of operations reaches default second limit value, if so, terminating, if it is not, then executing step
Rapid step 2.
5. washing machine foam detection method according to claim 4, which is characterized in that after step 7 is judged as NO, institute
State method further include:
Step 8: motor stalls preset time, executes step 2 later.
6. according to any washing machine foam detection method of claim 2~5, which is characterized in that the step 1 includes:
Step 11: washing machine inflow；
Step 12: whether current judgement is to intake for the first time, if so, step 13 is executed, if it is not, then terminating；
Step 13: judge in washing machine into water light transmittance it is whether normal, if so, 14 are thened follow the steps, if it is not, then executing
Step 15；
Step 14: after water inlet end, determining light transmittance a reference value, terminate later；
Step 15: setting abnormality terminates later.
7. washing machine foam detection method according to claim 6, which is characterized in that the step 14 includes:
It is continuous to read preset times light transmittance values after water inlet end preset duration, take arithmetic flat after removing maximum value and minimum value
Mean value terminates later as benchmark light transmittance values A.
8. according to any washing machine foam detection method of claim 2~5, which is characterized in that the step 2 includes:
Step 21: judging whether that abnormality is arranged, if so, terminating, if it is not, thening follow the steps 22；
Step 22: reading current light transmittance values B before motor rotates, execute step 3 later；
The step 3 includes:
Step 31: judging whether current light transmittance values B is less than the product of benchmark light transmittance values A and X%, if so, if so, executing
Step 4, if it is not, thening follow the steps 22, wherein X% is preset percentages.
9. washing machine foam detection method according to claim 8, which is characterized in that be judged as YES it in the step 31
Afterwards, the step 3 includes:
Step 32: light transmittance detects number and adds 1 certainly；
Step 33: judge whether light transmittance detection number is greater than default first limit value, if so, 4 are thened follow the steps, if it is not,
Then follow the steps 22.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710906213.4A CN109576955A (en) | 2017-09-29 | 2017-09-29 | A kind of roller washing machine and its foam detecting method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710906213.4A CN109576955A (en) | 2017-09-29 | 2017-09-29 | A kind of roller washing machine and its foam detecting method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109576955A true CN109576955A (en) | 2019-04-05 |
Family
ID=65914457
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710906213.4A Pending CN109576955A (en) | 2017-09-29 | 2017-09-29 | A kind of roller washing machine and its foam detecting method |
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| Country | Link |
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| CN (1) | CN109576955A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114098582A (en) * | 2021-11-18 | 2022-03-01 | 瀚乐电子机械（南京）有限公司 | System and method for detecting amount of foam in household appliance |
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| CN101307548A (en) * | 2007-12-11 | 2008-11-19 | 南京乐金熊猫电器有限公司 | Washing machine foam detection method |
| CN101307550A (en) * | 2007-12-11 | 2008-11-19 | 南京乐金熊猫电器有限公司 | Washing machine foam detection method |
| CN101429716A (en) * | 2007-11-05 | 2009-05-13 | 海尔集团公司 | Detection and detection apparatus for foam excess of rotary drum washing machine |
| CN102535085A (en) * | 2010-11-24 | 2012-07-04 | 三星电子株式会社 | Washing machine and method to detect suds thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101429716A (en) * | 2007-11-05 | 2009-05-13 | 海尔集团公司 | Detection and detection apparatus for foam excess of rotary drum washing machine |
| CN101307548A (en) * | 2007-12-11 | 2008-11-19 | 南京乐金熊猫电器有限公司 | Washing machine foam detection method |
| CN101307550A (en) * | 2007-12-11 | 2008-11-19 | 南京乐金熊猫电器有限公司 | Washing machine foam detection method |
| CN102535085A (en) * | 2010-11-24 | 2012-07-04 | 三星电子株式会社 | Washing machine and method to detect suds thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114098582A (en) * | 2021-11-18 | 2022-03-01 | 瀚乐电子机械（南京）有限公司 | System and method for detecting amount of foam in household appliance |
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