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CN101498094B - Foam detecting method, foam detection device and drum-type washing machine - Google Patents

Foam detecting method, foam detection device and drum-type washing machine Download PDF

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Publication number
CN101498094B
CN101498094B CN2009101059764A CN200910105976A CN101498094B CN 101498094 B CN101498094 B CN 101498094B CN 2009101059764 A CN2009101059764 A CN 2009101059764A CN 200910105976 A CN200910105976 A CN 200910105976A CN 101498094 B CN101498094 B CN 101498094B
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CN
China
Prior art keywords
washing machine
dehydration
foam
index signal
roller washing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN2009101059764A
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Chinese (zh)
Other versions
CN101498094A (en
Inventor
邓宝宁
刘建伟
蒋洪波
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shenzhen H&T Intelligent Control Co Ltd
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Shenzhen H&T Intelligent Control Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
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Priority to CN2009101059764A priority Critical patent/CN101498094B/en
Publication of CN101498094A publication Critical patent/CN101498094A/en
Priority to PCT/CN2009/076206 priority patent/WO2010102504A1/en
Application granted granted Critical
Publication of CN101498094B publication Critical patent/CN101498094B/en
Expired - Fee Related legal-status Critical Current
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    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06FLAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F33/00Control of operations performed in washing machines or washer-dryers 
    • D06F33/30Control of washing machines characterised by the purpose or target of the control 
    • D06F33/32Control of operational steps, e.g. optimisation or improvement of operational steps depending on the condition of the laundry
    • D06F33/42Control of operational steps, e.g. optimisation or improvement of operational steps depending on the condition of the laundry of draining
    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06FLAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F39/00Details of washing machines not specific to a single type of machines covered by groups D06F9/00 - D06F27/00 
    • D06F39/06Arrangements for preventing or destroying scum
    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06FLAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F33/00Control of operations performed in washing machines or washer-dryers 
    • D06F33/30Control of washing machines characterised by the purpose or target of the control 
    • D06F33/32Control of operational steps, e.g. optimisation or improvement of operational steps depending on the condition of the laundry
    • D06F33/38Control of operational steps, e.g. optimisation or improvement of operational steps depending on the condition of the laundry of rinsing
    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06FLAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F39/00Details of washing machines not specific to a single type of machines covered by groups D06F9/00 - D06F27/00 
    • D06F39/08Liquid supply or discharge arrangements
    • D06F39/087Water level measuring or regulating devices
    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06FLAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F2103/00Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
    • D06F2103/18Washing liquid level
    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06FLAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F2105/00Systems or parameters controlled or affected by the control systems of washing machines, washer-dryers or laundry dryers
    • D06F2105/08Draining of washing liquids

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Control Of Washing Machine And Dryer (AREA)

Abstract

The embodiment of the invention relates to a foam detecting method comprising: detecting a water level of a drum washing machine in a dehydration process, especially comprising: detecting the water level of the drum washing machine in the dehydration process when the drainage is over, obtaining a first indication signal, detecting the water level of the drum washing machine in the dehydration process when an inner drum rotates in a high speed, and obtaining a second indication signal; according to detected results, judging whether the foam produced by the drum washing machine in the dehydration process is over standard or not, especially comprising: according to the first indication signal, the second indication signal and a pre-setting threshold, judging whether the corresponding difference value between the first and the second indication signals exceeds the threshold or not, if so, the foam produced by the drum washing machine in the dehydration process being over standard. In addition, the embodiment of the invention also provides a corresponding foam detecting device and a drum washing machine, which can perform a corresponding foam elimination process, and avoid the consequence caused by the overflow of foam.

Description

A kind of foam detecting method, foam detecting device and roller washing machine
Technical field
The present invention relates to electronic applications, relate in particular to a kind of foam detecting method, foam detecting device and roller washing machine.
Background technology
Roller washing machine is by the rotation of the metal inner core of a sealing, drive the top of clothes to inner core, allow the clothes freely falling body then, the purpose that reaches washing of beating by the simulation clothes, therefore, the user can use fewer water and washing powder or other abluent just can reach reasonable clean result when using roller washing machine.
In order to guarantee the sealing of roller washing machine, roller washing machine generally has only a water inlet and water discharge outlet to be in communication with the outside, and cylinder pressure is bigger.The user when washing clothes, the difficult assurance of the amount of putting into of washing powder, and that different cloth matter and cloth amount also can cause washing powder to produce the result of foam is different.If the user puts into too much washing powder when washing clothes, then can cause the foam that produces in the inner core too much, and the seal of cylinder machine is better, carrying out along with washing process, when particularly inner core rotates at a high speed in dehydration, foam in the inner core is difficult to vanish and can get more and more, and last result must be that foam overflows from water inlet and/or water discharge outlet, thereby causes very serious consequence.
Summary of the invention
Embodiment of the invention technical problem to be solved is, a kind of foam detecting method, foam detecting device and roller washing machine are provided, can pass through sensed water level, judge whether the foam that roller washing machine produces exceeds standard in dehydration, thereby can carry out the corresponding processing of eliminating foam, avoid overflowing the consequence that is caused because of foam.
For solving the problems of the technologies described above, the embodiment of the invention adopts following technical scheme:
A kind of foam detecting method comprises:
Detect the water level of roller washing machine in dehydration, specifically comprise: the water level when detecting described roller washing machine draining finishing in described dehydration, obtain first index signal, water level when detecting described roller washing machine its inner core rotating at a high speed in described dehydration obtains second index signal;
Result according to described detection, judge whether the foam that described roller washing machine produces exceeds standard in dehydration, specifically comprise: according to described first index signal, second index signal, and the threshold value that presets, judge whether described first index signal difference corresponding with described second index signal surpasses described threshold value, if the foam that then described roller washing machine produces in dehydration exceeds standard.
A kind of foam detecting device comprises:
Detecting unit is used for detecting the water level of roller washing machine in dehydration, comprising: first detecting unit, be used for detecting the water level of described roller washing machine when described dehydration draining finishes, and obtain first index signal; Second detecting unit is used for detecting the water level of described roller washing machine when its inner core of described dehydration rotates at a high speed, obtains second index signal;
Processing unit is used for the result according to described detection, judges whether the foam that described roller washing machine produces in dehydration exceeds standard, and comprises judging unit and control module, wherein,
Judging unit is used for the result according to described detection, and judge whether the foam that described roller washing machine produces in dehydration exceeds standard, and described judging unit comprises again: memory cell is used to store the threshold value that presets; The foam judging unit, be used for according to described first index signal, second index signal, and described threshold value, judge whether described first index signal difference corresponding with described second index signal surpasses described threshold value, if the foam that then described roller washing machine produces in dehydration exceeds standard;
Control module, be used for when described judgment unit judges be foam that described roller washing machine produces in dehydration when exceeding standard, control described roller washing machine and stop described dehydration and restart rinse cycle before the described dehydration.
A kind of roller washing machine comprises:
Foam detecting device is used for detecting the water level of roller washing machine in dehydration, and according to the result of described detection, judges whether the foam that described roller washing machine produces exceeds standard in dehydration.
The beneficial effect of the embodiment of the invention is:
By a kind of foam detecting method, by detecting the water level of roller washing machine in dehydration, and according to the result of described detection, judge whether the foam that described roller washing machine produces exceeds standard in dehydration, thereby can carry out the corresponding processing of eliminating foam, avoid overflowing the consequence that is caused because of foam.
Below in conjunction with accompanying drawing the embodiment of the invention is described in further detail.
Description of drawings
Fig. 1 is the specific embodiment schematic diagram of foam detecting method of the present invention;
Fig. 2 is the specific embodiment schematic diagram of foam detecting device of the present invention;
Fig. 3 is the line construction schematic diagram of the detecting unit 201 of the embodiment of the invention;
Fig. 4 is another line construction schematic diagram of the detecting unit 201 of the embodiment of the invention.
The specific embodiment
The embodiment of the invention is by providing a kind of foam detecting method and corresponding foam detecting device and roller washing machine, can be according to the testing result of the water level of roller washing machine in dehydration, judge whether the foam that roller washing machine produces exceeds standard in dehydration, thereby can carry out the corresponding processing of eliminating foam, avoid overflowing the consequence that is caused because of foam.
Fig. 1 is the specific embodiment schematic diagram of foam detecting method of the present invention, and roller washing machine enters dehydration after finishing rinse cycle, dehydration is generally carried out draining earlier, treat water drain its inner core of back more at a high speed rotation dewater, with reference to this figure, this method mainly comprises:
101, the water level when detecting roller washing machine draining finishing in dehydration obtains first index signal, i.e. first voltage signal, and this first voltage signal corresponding voltage value is U1;
102, after draining finished, the water level when detecting roller washing machine its inner core rotating at a high speed in dehydration obtained second index signal, i.e. second voltage signal, and this second voltage signal corresponding voltage value is U2; 103, according to first index signal, second index signal, and the threshold value U3 that presets, whether the difference DELTA U that judges first index signal and second index signal surpasses threshold value U3, Δ U=U2-U1 wherein, if, then the foam that produces in dehydration of roller washing machine exceeds standard, and carries out 104, otherwise carries out 105, particularly, U3 is the empirical value that obtains through experiment, and the U3 value of the washing machine correspondence of different inner cores or different structure is general different, when the foam that produces seldom or not surpasses certain limit, Δ U can be within limits, can not surpass U3, when foam exceeded certain limit, the pressure in the inner core can continue to increase, this moment, the value of U2 also can become greatly, thereby may cause Δ U to surpass U3;
104, when the foam that produces in dehydration when roller washing machine exceeded standard, the index drum washing machine stopped dehydration and restarts rinse cycle before the dehydration, foam is rinsed out carry out dehydration again;
105, proceed normal dehydration.
As a kind of embodiment, above-mentioned first index signal, second index signal are not limited to voltage signal, also can be frequency signals, and the processing mode of its corresponding method is similar to the above.
Correspondingly, foam detecting device and the roller washing machine to the embodiment of the invention describes below, and wherein roller washing machine can comprise foam detecting device as shown in Figure 2.
Fig. 2 is the specific embodiment schematic diagram of foam detecting device of the present invention, and with reference to this figure, this foam detecting device mainly comprises detecting unit 201, processing unit 202, and wherein, processing unit 202 comprises judging unit 203, control module 204;
Detecting unit 201 links to each other with processing unit 202, and judging unit 203 links to each other with control module 204;
Detecting unit 201 can comprise first detecting unit, is used for detecting the water level of roller washing machine when the dehydration draining finishes, and obtains first index signal, i.e. first voltage signal, and this first voltage signal corresponding voltage value is U1;
Detecting unit 201 also can comprise second detecting unit, be used for after draining finishes, the water level when detecting roller washing machine its inner core rotating at a high speed in dehydration obtains second index signal, i.e. second voltage signal, this second voltage signal corresponding voltage value is U2;
At this moment, detecting unit 201 can be the level pressure sensor that produces voltage signal, mainly comprises line construction as shown in Figure 3:
The fluviograph that comprises three ports, its first port links to each other with+5 volts power supply, first port is by first capacitor C, 1 ground connection, second port is by first resistance R 1, second resistance R 3, the 3rd resistance R 4 output signal IO1 (being above-mentioned first index signal, second index signal), second port is by first resistance R 1, second resistance R 3, second capacitor C, 2 ground connection, and the 3rd port ground connection also is connected between first resistance R 1 and second resistance R 3 by the 4th resistance R 2;
Judging unit 203 can comprise memory cell, is used to store the threshold value that presets, and particularly, U3 is the empirical value that obtains through experiment, and the U3 value of the washing machine correspondence of different inner cores or different structure is general different;
Judging unit 203 also can comprise the foam judging unit, be used for according to first index signal, second index signal, and the threshold value U3 that presets, whether the difference DELTA U that judges first index signal and second index signal surpasses threshold value U3, Δ U=U2-U1 wherein, if, then the foam that produces in dehydration of roller washing machine exceeds standard, particularly, and when the foam that produces seldom or not surpasses certain limit, Δ U can be within limits, can not surpass U3, when foam exceeded certain limit, the pressure in the inner core can continue to increase, this moment, the value of U2 also can become greatly, thereby may cause Δ U to surpass U3;
Control module 204, be used for being judged as foam that roller washing machine produces in dehydration when exceeding standard when judging unit 203, the index drum washing machine stops dehydration and restarts dehydration rinse cycle before, foam is rinsed out carry out dehydration again.
As a kind of embodiment, processing unit 202 can be microprocessing unit (Micro Controller Unit, MCU) or other processors.
As a kind of embodiment, above-mentioned first index signal, second index signal are not limited to voltage signal, it also can be frequency signal, the processing mode of its corresponding method is similar to the above, but detecting unit 201 is the level pressure sensors that produce frequency signal, mainly comprises line construction as shown in Figure 4:
The fluviograph that comprises three ports, its first port is by first resistance R 8, the first inverter ic 1C, second resistance R, 9 output signal IO2 (are above-mentioned first index signal, second index signal) and ground connection, second port is by the 3rd resistance R 5, the 4th resistance R 7 is connected between first resistance R 8 and the first inverter ic 1C, the 3rd port ground connection is also passed through the 5th resistance R 6, the second inverter ic 1A is connected between first resistance R 8 and the first inverter ic 1C, the 3rd port is by the 5th resistance R 6, the 3rd inverter ic 1B is connected between first resistance R 8 and the first inverter ic 1C, and the 3rd port is connected between the 3rd resistance R 5 and the 4th resistance R 7 by the 5th resistance R 6.
Adopt the level pressure sensor to carry out foam and detect, simple and convenient, be easy to realize.
In addition, one of ordinary skill in the art will appreciate that all or part of flow process that realizes in the foregoing description method, be to instruct relevant hardware to finish by program, described program can be stored in the computer-readable recording medium, this program can comprise the flow process as the embodiment of above-mentioned each side method when carrying out.Wherein, described storage medium can be magnetic disc, CD, read-only storage memory body (Read-Only Memory, ROM) or at random store memory body (Random Access Memory, RAM) etc.
The above is the specific embodiment of the present invention; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention; can also make some improvements and modifications, these improvements and modifications also are considered as protection scope of the present invention.

Claims (7)

1. a foam detecting method is characterized in that, comprising:
Detect the water level of roller washing machine in dehydration, specifically comprise: the water level when detecting described roller washing machine draining finishing in described dehydration, obtain first index signal, water level when detecting described roller washing machine its inner core rotating at a high speed in described dehydration obtains second index signal;
According to the result who detects, judge whether the foam that described roller washing machine produces exceeds standard in dehydration, specifically comprise: according to described first index signal, second index signal, and the threshold value that presets, judge whether described first index signal difference corresponding with described second index signal surpasses described threshold value, if the foam that then described roller washing machine produces in dehydration exceeds standard.
2. the method for claim 1 is characterized in that, described first index signal, described second index signal are voltage signal, and perhaps, described first index signal, described second index signal are frequency signal.
3. the method for claim 1 is characterized in that, described method also comprises:
When the foam that produces in dehydration when described roller washing machine exceeds standard, control described roller washing machine and stop described dehydration and restart rinse cycle before the described dehydration.
4. a foam detecting device is characterized in that, comprising:
Detecting unit is used for detecting the water level of roller washing machine in dehydration, comprising: first detecting unit, be used for detecting the water level of described roller washing machine when described dehydration draining finishes, and obtain first index signal; Second detecting unit is used for detecting the water level of described roller washing machine when its inner core of described dehydration rotates at a high speed, obtains second index signal;
Processing unit is used for judging according to the result who detects whether the foam that described roller washing machine produces exceeds standard, and comprises judging unit and control module in dehydration, wherein,
Judging unit is used for according to the result who detects, and judge whether the foam that described roller washing machine produces in dehydration exceeds standard, and described judging unit comprises: memory cell is used to store the threshold value that presets; The foam judging unit, be used for according to described first index signal, second index signal, and described threshold value, judge whether described first index signal difference corresponding with described second index signal surpasses described threshold value, if the foam that then described roller washing machine produces in dehydration exceeds standard;
Control module, be used for when described judgment unit judges be foam that described roller washing machine produces in dehydration when exceeding standard, control described roller washing machine and stop described dehydration and restart rinse cycle before the described dehydration.
5. device as claimed in claim 4 is characterized in that, described first index signal, described second index signal are voltage signal, and perhaps, described first index signal, described second index signal are frequency signal.
6. device as claimed in claim 4 is characterized in that, described detecting unit is the level pressure sensor, and described processing unit is a microprocessing unit.
7. a roller washing machine is characterized in that, comprising:
As each described foam detecting device in the claim 4~6, be used for detecting the water level of roller washing machine, and, judge whether the foam that described roller washing machine produces exceeds standard in dehydration according to the result who detects in dehydration.
CN2009101059764A 2009-03-11 2009-03-11 Foam detecting method, foam detection device and drum-type washing machine Expired - Fee Related CN101498094B (en)

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CN2009101059764A CN101498094B (en) 2009-03-11 2009-03-11 Foam detecting method, foam detection device and drum-type washing machine
PCT/CN2009/076206 WO2010102504A1 (en) 2009-03-11 2009-12-29 Foam detection method, foam detection device and drum washing machine

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Application Number Priority Date Filing Date Title
CN2009101059764A CN101498094B (en) 2009-03-11 2009-03-11 Foam detecting method, foam detection device and drum-type washing machine

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CN101498094B true CN101498094B (en) 2011-05-04

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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
DE102015205945A1 (en) * 2015-04-01 2016-10-06 BSH Hausgeräte GmbH Method for operating a washing machine with foam detection by a drum speed evaluation and this suitable washing machine
CN106350967A (en) * 2016-10-11 2017-01-25 珠海格力电器股份有限公司 Foam treatment method and apparatus
CN106350968B (en) * 2016-10-17 2019-01-08 珠海格力电器股份有限公司 Method and system for preventing foam from overflowing
CN108166219B (en) * 2016-12-07 2020-08-14 青岛海尔滚筒洗衣机有限公司 Method for detecting and eliminating foam in a washing machine
CN106978701B (en) * 2017-03-24 2020-04-14 无锡小天鹅电器有限公司 Washing machine and dewatering control method and device with water for washing machine
CN108866931B (en) * 2017-05-15 2021-08-24 青岛胶南海尔洗衣机有限公司 Dehydration control method and system for washing machine and washing machine including the same
CN108978135A (en) * 2017-06-01 2018-12-11 青岛海尔洗衣机有限公司 Washing machine drainage method
CN108265461B (en) * 2017-12-22 2020-06-16 珠海格力电器股份有限公司 Method and device for treating foam in washing machine
CN110714297B (en) * 2019-09-02 2021-01-29 珠海格力电器股份有限公司 Washing machine dehydration mode control method, computer readable storage medium and washing machine
CN114606706B (en) * 2020-12-04 2024-01-02 广州视源电子科技股份有限公司 Defoaming control method, device and storage medium

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WO2010102504A1 (en) 2010-09-16

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