CN102242487A - Method for automatically calibrating water level of washing machine - Google Patents
Method for automatically calibrating water level of washing machine Download PDFInfo
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- CN102242487A CN102242487A CN2011101600540A CN201110160054A CN102242487A CN 102242487 A CN102242487 A CN 102242487A CN 2011101600540 A CN2011101600540 A CN 2011101600540A CN 201110160054 A CN201110160054 A CN 201110160054A CN 102242487 A CN102242487 A CN 102242487A
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Abstract
The invention discloses a method for automatically calibrating the water level of a washing machine, comprising the steps of: setting a normal water level frequency value F when a washing cylinder has no water and a water level frequency calibration range (F-b)-(F+b), wherein b is equal to 0.0003F-0.0005F; and when an inner cylinder is in a waterless state, judging whether the frequency value F' is in the water level frequency calibration range or not, if F' is out of the water level frequency calibration range, automatically calibrating the water level by a system to ensure that F' is the normal frequency value F so as to realize the automatic calibration of the water level. The method has the advantages of simpleness, science and high accuracy and is particularly suitable for small-volume washing machines having higher water level requirements.
Description
Technical field
The present invention relates to the washing machine field, particularly a kind of method of automatic calibration washing machine water level.
Background technology
The water level measurement method of existing washing machine mainly is with level sensor pressure signal to be transformed into frequency signal to realize Water Level Control.It as number of patent application 200410059262.1 Chinese invention patent " tumbling-box washing machine " with water level detecting unit, disclose a kind of water level detecting unit of tumbling-box washing machine, it comprises the level sensor flexible pipe, it is connected to the suction tube position of drainage pump of washing machine so that be communicated with the tube that is filled with water, also comprise level switch, be installed in the upper end of level sensor flexible pipe, be used for the air pressure of sensed water level sensing flexible pipe and the water level that is contained in the water in the tube that is filled with water, the level sensor flexible pipe comprises large-diameter portion and minor diameter, level switch is installed in upper end at minor diameter, large-diameter portion is connected to the lower end of minor diameter, large-diameter portion is communicated with the bottom of the tube that is filled with water by the suction tube and the drainpipe of draining pump, so when being infeeded in the tube that is filled with water when water, the water level of large-diameter portion also can be along with increase, when the water level of large-diameter portion increases, air in the level sensor flexible pipe is compressed, pressure in the level sensor flexible pipe increases, the variation of level switch detected pressures, thus the water level that is contained in the water in the tube that is filled with water detected.Thisly utilize the air pressure in the level switch sensed water level sensing flexible pipe and detect the method for the water level in the tube that is filled with water, precision is lower, it is subjected to the influence of environment bigger, the vibrations of washing machine and the foreign material in it all can influence the accuracy of detection of level switch, especially for detection, just more inaccurate than low water level.
In addition, the condenser type of employing condensate tank of dehumidifier is also arranged in the prior art, as the patent No. is the Chinese patent of ZL01231098.0, disclose a kind of " condenser type condensate tank of dehumidifier ", it will be enclosed with the metallic conductor of insulating barrier as level sensor, this level sensor vertically is installed in the water tank that needs sensed water level, its big can be arranged in water tank, ground wire is connected in water tank, the electric capacity that forms an energy following water-level lifting between level sensor and the water and change, to be transformed into the continually varying signal of telecommunication with the capacitance of SEA LEVEL VARIATION by electronic circuit, be input to other control circuit, thereby realize the water level detecting in the water tank.This level sensor need be placed in the interior water of detected water tank, will place the clothing tube because washing machine is filled with water in the tube, will place washing clothes in the clothing tube, so this kind condensate tank of dehumidifier is not suitable for washing machine.
China application CN101487730, a kind of washing machine level testing methods and device thereof disclose a kind of washing machine level testing methods and device thereof, it is to utilize the test using capacitance sensor washing machine of being made up of PCB substrate and the sheet metal interior water level of tube that is filled with water, sheet metal is close to washing machine and is filled with water on the outer wall of the connected component that is communicated with of tube, perhaps sheet metal directly is affixed on the outer wall of the tube that is filled with water, it can respond to the variation of water level, and change its capacitance, by a control module, detect and handle the capacitance of capacitance type sensor, calculate the height of water level with this, thus control water level.This invention is owing to adopted capacitance type sensor, the small strain that it can respond to connected component or the outer wall of the tube that is filled with water produces owing to SEA LEVEL VARIATION, sensed water level is more accurate, stability is high, and is simple in structure, and sensor mainly is to be made of PCB and sheet metal, cost is also lower, but the sheet metal of this kind level sensor is directly exposed in the environment of high humidity, and sheet metal is easy to corrosion, causes level sensor inaccurate.
Present washing machine carries out the water level frequency setting when dispatching from the factory after, can not change, the threshold value of water level frequency is changeless, therefore, after operation a period of time, the precision of level sensor will be more and more lower, thereby make the water level error become big. and may cause water consumption to increase, even water inlet is more than, safety problems such as band water dehydration.In addition, water level is required strict type, just developed novel mini little washing machine as the applicant at some, because the inner core volume is little, therefore, Water Level Control is had higher requirement, provide a kind of high-precision water level determination methods to be significant.
Above patent application mainly is the detection method at water level, and does not relate to the calibration problem of water level.In view of this, special proposition the present invention.
Summary of the invention
First purpose of the present invention is to provide a kind of control method that water level is calibrated automatically, water level is under the high-precision situation always moves.
For realizing first purpose of the present invention, the present invention adopts following technical scheme:
A kind of method of automatic calibration washing machine water level, normal water level frequency value F and water level frequency calibration scope F ± b when the setting cylindric washer is anhydrous in the washing machine control system, wherein b is 0.0003F～0.0005F; When inner core is in anhydrous state, read the frequency value F of this moment ' and judge it whether in water level frequency calibration scope, if exceed water level frequency calibration scope, then system calibrates water level automatically, putting F ' is standard frequency value F, thereby realizes the automatic calibration of water level.
In the 1-2s of each washing procedure end of run, washing machine does not cut off the power supply earlier, read the water level frequency value F of this moment ', judge whether to carry out the water level calibration.
After connecting power supply, begin and before the water inlet at washing procedure, read the water level frequency value F of this moment ', judge whether to carry out the water level calibration.
Described F value is set according to different washing machine types or level sensor.
Described washing machine is agitator type washing machine, rotary drum washing machine or roller washing machine.
Described washing machine is the washing machine of volume below 1 kilogram.
Described washing machine volume is 0.5 kilogram, and F is 91.40KHz, and described water level frequency calibration scope is 91.34KHz～91.46KHz.
Described F is 91.40KHz, and described water level frequency calibration scope is 91.36KHz～91.44KHz.
Described water level calibration steps is:
(1) be that established standards water level frequency value F is 91.40KHz in 0.5 kilogram the washing machine control system at volume, water level frequency calibration scope is 91.36KHz～91.44KHz;
(2) when the washing procedure end of run, the time showing of computer program controller of washing machine is that washing machine does not cut off the power supply earlier in 1～2s after 0, read the water level frequency value F of this moment ', judge that F ' is whether in 91.36KHz～91.44KHz scope; If then do not carry out the automatic calibration procedure of water level; If not, execution in step 3;
(3) water level is calibrated, putting F ' is 91.40KHz.
1 couple of the present invention describes in detail below in conjunction with Figure of description:
The present invention is normal water level frequency value F and the water level frequency calibration scope F ± b when the setting cylindric washer is anhydrous in the washing machine control system, and wherein b is 0.0003F～0.0005F.This F value is set according to different washing machine types or level sensor.Described water level frequency calibration scope is to determine through final after a large amount of experiments of inventor to various type water level controls, when detected water level frequency values under the anhydrous state is in the 0.0003-0.0005 of F value scope doubly, can obtain desirable high accuracy water level control purpose, and in case exceed above-mentioned water level frequency calibration scope, the washing machine control system just can not be made accurate judgement to washing machine water level, thereby influences the washing process of clothing.
As shown in Figure 1, during use, frequency value F when reading inner core and being in anhydrous state ', and judge whether in water level frequency calibration scope, if exceed water level frequency calibration scope, represent that then level sensor changes, can not accurately judge water level, system then calibrates water level automatically, and putting F ' is standard frequency value F, thereby realizes the automatic calibration of water level.
The automatic calibration of water level of the present invention can be carried out when bucket is in anhydrous state in the charged while in any system, as: in the 1-2s of each washing procedure end of run, washing machine does not cut off the power supply earlier, read the water level frequency value F of this moment ', judge whether to carry out the water level calibration.Or behind the connection power supply, begin and before the water inlet at washing procedure, read the water level frequency value F of this moment ', judge whether to carry out water level calibration.And the user is cut off the power supply halfway, and then system does not carry out calibration and water level determining program.
Water level of the present invention is calibrated the method for water level automatically applicable to agitator type washing machine, rotary drum washing machine or roller washing machine.Be particularly useful for the demanding type of water level,, ensure that washing process normally moves with strictness control inflow.As the small-sized/miniature washer of volume below 1 kilogram, this washing machine is small-sized/miniature washer that a class is cleaned small article specially.This type of washing machine generally adopts the impeller-type working method, can be used for washing socks, baby clothes etc. specially, can prevent that particularly socks from producing cross infection to other clothing, and save energy consumption and floor space.
The inventor is that the water level calibration way automatically of 0.5 kilogram little washing machine has been done big quantity research experiment to volume, final determines that setting F is 91.40KHz, and when water level frequency calibration scope was 91.34KHz～91.46KHz, water potential accessed high-precision control.Preferred described F is 91.40KHz, and described water level frequency calibration scope is 91.36KHz～91.44KHz.
Concrete water level calibration steps is:
(1) be that established standards water level frequency value F is 91.40KHz in 0.5 kilogram the washing machine control system at volume, water level frequency calibration scope is 91.36KHz～91.44KHz;
(2) when the washing procedure end of run, the time showing of computer program controller of washing machine is that washing machine does not cut off the power supply earlier in 1～2s after 0, read the water level frequency value F of this moment ', judge that F ' is whether in 91.36KHz～91.44KHz scope; If then do not carry out the automatic calibration procedure of water level; If not, execution in step 3;
(3) water level is calibrated, putting F ' is 91.40KHz.
After adopting the way of the automatic calibration of above-mentioned water level, can after beginning preceding or finish, each washing process carry out primary calibration to the water level frequency, washing process is all finished under high-precision water level control, avoided because the water consumption increase that the inaccurate institute of water level control may cause, even water inlet is more than, safety problems such as band water dehydration.This method is simple, suits extensively to promote the use of.
Description of drawings
The schematic flow sheet of Fig. 1 control method of the present invention
The specific embodiment
Below in conjunction with embodiment the present invention is described in more detail.
Embodiment 1
The calibration of present embodiment middle water level comprises the steps:
(1) be that established standards water level frequency value F is 91.40KHz in 0.5 kilogram the washing machine control system at volume, water level frequency calibration scope is 91.36KHz～91.44KHz;
(2) when the washing procedure end of run, the time showing of computer program controller of washing machine is that washing machine does not cut off the power supply earlier in 1～2s after 0, read the water level frequency value F of this moment ', judge that F ' is whether in 91.36KHz～91.44KHz scope; If then do not carry out the automatic calibration procedure of water level; If not, execution in step 3;
(3) water level is calibrated, putting F ' is 91.40KHz.
Embodiment 2
Compare with embodiment 1, distinctive points only is: described step 2 is: after connecting power supply, begin and before the water inlet at washing procedure, read the water level frequency value F of this moment ', judge whether to carry out the water level calibration.
Embodiment 3
Compare with embodiment 1, distinctive points only is: the normal water level frequency value F is 91.40KHz in the present embodiment 1, and water level frequency calibration scope is 91.34KHz～91.46KHz.
Embodiment 4
The calibration of present embodiment middle water level comprises the steps:
(1) be that established standards water level frequency value F is 23.25KHz in 6 kilograms the rotary drum washing machine control system at volume, water level frequency calibration scope is 23.15KHz～23.35KHz;
(2) when the washing procedure end of run, the time showing of computer program controller of washing machine is that washing machine does not cut off the power supply earlier in 1～2s after 0, read the water level frequency value F of this moment ', judge that F ' is whether in 23.15KHz～23.35KHz scope; If then do not carry out the automatic calibration procedure of water level; If not, execution in step 3;
(3) water level is calibrated, putting F ' is 23.25KHz.
Embodiment in the foregoing description can further make up or replace; and embodiment is described the preferred embodiments of the present invention; be not that design of the present invention and scope are limited; under the prerequisite that does not break away from design philosophy of the present invention; the various changes and modifications that the professional and technical personnel makes technical scheme of the present invention in this area all belong to protection scope of the present invention.
Claims (9)
1. automatic method of calibration washing machine water level is characterized in that: set normal water level frequency value F and the water level frequency calibration scope F ± b of cylindric washer when anhydrous in the washing machine control system, wherein b is 0.0003F～0.0005F; When inner core is in anhydrous state, read the frequency value F of this moment ' and judge it whether in water level frequency calibration scope, if exceed water level frequency calibration scope, then system calibrates water level automatically, putting F ' is standard frequency value F, thereby realizes the automatic calibration of water level.
2. method according to claim 1 is characterized in that: in the 1-2s of each washing procedure end of run, washing machine does not cut off the power supply earlier, read the water level frequency value F of this moment ', judge whether to carry out the water level calibration.
3. method according to claim 1 is characterized in that, connect power supply after, begin and before the water inlet at washing procedure, read the water level frequency value F of this moment ', judge whether to carry out the water level calibration.
4. according to each described method of claim 1-3, it is characterized in that: described F value is set according to different washing machine types or level sensor.
5. method according to claim 1 is characterized in that: described washing machine is agitator type washing machine, rotary drum washing machine or roller washing machine.
6. method according to claim 5 is characterized in that: described washing machine is the washing machine of volume below 1 kilogram.
7. according to claim 1 or 6 described methods, it is characterized in that: described washing machine volume is 0.5 kilogram, and described F is 91.40KHz, and described water level frequency calibration scope is 91.34KHz～91.46KHz.
8. method according to claim 7 is characterized in that: described F is 91.40KHz, and described water level frequency calibration scope is 91.36KHz～91.44KHz.
9. method according to claim 1 is characterized in that: described water level calibration steps is:
(1) be that established standards water level frequency value F is 91.40KHz in 0.5 kilogram the washing machine control system at volume, water level frequency calibration scope is 91.36KHz～91.44KHz;
(2) when the washing procedure end of run, the time showing of computer program controller of washing machine is that washing machine does not cut off the power supply earlier in 1～2s after 0, read the water level frequency value F of this moment ', and judge that F ' is whether in 91.36KHz～91.44KHz scope; If then do not carry out the automatic calibration procedure of water level; If not, execution in step 3;
(3) water level is calibrated, putting F ' is 91.40KHz.
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| CN201110160054.0A CN102242487B (en) | 2011-06-15 | 2011-06-15 | A kind of method of automatic calibration water level of washing machine |
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| CN201110160054.0A CN102242487B (en) | 2011-06-15 | 2011-06-15 | A kind of method of automatic calibration water level of washing machine |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107034619A (en) * | 2016-12-02 | 2017-08-11 | Tcl家用电器（合肥）有限公司 | Washing procedure of washing machine system of selection and device |
| CN111593531A (en) * | 2020-05-30 | 2020-08-28 | 广东蓝水花智能电子有限公司 | Water level control method for washing machine |
| CN111607937A (en) * | 2020-05-30 | 2020-09-01 | 广东蓝水花智能电子有限公司 | Efficient washing control method for washing machine |
| CN113073445A (en) * | 2020-01-06 | 2021-07-06 | 青岛海尔洗衣机有限公司 | Water level frequency self-calibration method of washing machine and washing machine |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113073445A (en) * | 2020-01-06 | 2021-07-06 | 青岛海尔洗衣机有限公司 | Water level frequency self-calibration method of washing machine and washing machine |
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| CN111607937A (en) * | 2020-05-30 | 2020-09-01 | 广东蓝水花智能电子有限公司 | Efficient washing control method for washing machine |
| CN111607937B (en) * | 2020-05-30 | 2023-07-14 | 广东蓝水花智能电子有限公司 | Efficient washing control method for washing machine |
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Effective date of registration: 20160622 Address after: 266101 Haier Industrial Park, No. 1, Haier Road, hi tech park, Laoshan District, Shandong, China Patentee after: Qingdao Haier Washing Machine Co., Ltd. Address before: 266101 Haier Industrial Park, No. 1, Haier Road, hi tech park, Laoshan District, Shandong, China Patentee before: haier group corporation Patentee before: Qingdao Haier Washing Machine Co., Ltd. |
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Effective date of registration: 20170505 Address after: 266400, Qingdao, Shandong province Jiaonan City Bay Road Patentee after: Qingdao Jiaonan Haier Washing Machine Co.,Ltd. Address before: 266101 Haier Industrial Park, No. 1, Haier Road, hi tech park, Laoshan District, Shandong, China Patentee before: Qingdao Haier Washing Machine Co., Ltd. |