CN1651635A - Washing machine with water control and associated method - Google Patents

Washing machine with water control and associated method Download PDF

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Publication number
CN1651635A
CN1651635A CNA2005100016551A CN200510001655A CN1651635A CN 1651635 A CN1651635 A CN 1651635A CN A2005100016551 A CNA2005100016551 A CN A2005100016551A CN 200510001655 A CN200510001655 A CN 200510001655A CN 1651635 A CN1651635 A CN 1651635A
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CN
China
Prior art keywords
injection rate
washing machine
filling stage
water
water filling
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.)
Pending
Application number
CNA2005100016551A
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Chinese (zh)
Inventor
M·T·克劳泽
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.)
Emerson Electric Co
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Emerson Electric Co
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.)
Filing date
Publication date
Application filed by Emerson Electric Co filed Critical Emerson Electric Co
Publication of CN1651635A publication Critical patent/CN1651635A/en
Pending 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
    • D06F33/34Control of operational steps, e.g. optimisation or improvement of operational steps depending on the condition of the laundry of water filling
    • 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
    • D06F2105/02Water supply
    • 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

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

Abstract

An automatic washing machine with water level control and associated method. In one embodiment, the washing machine comprises a tub for receiving a load of clothes, a water level sensor taking water level measurements during a water fill stage, and a controller. The controller controls a water valve that introduces water into the washing machine. The controller comprises a timer, a memory and a microprocessor. The microprocessor accesses a signature fill rate of the washing machine when unloaded, receives water level measurements from the sensor during the fill stage, and determines a measured fill rate. The microprocessor compares the measured fill rate to the signature fill rate and shut off the water valve when the measured fill rate is substantially equal to the signature fill rate.

Description

The washing machine and the correlation technique thereof of band water control
Technical field
The present invention is about a kind of washing machine and correlation technique thereof with water level control.
Background technology
Most household electrical appliance, for example washing machine and dish-washing machine etc. all are equipped with the water storage device that comprises water level control.These devices may need the user to import cyclical patterns or the circulating continuancing time or the water level estimation required according to load of selection.
Traditional maximum load washing machine comprises the water level when for example fixed or changed pressure switch is determined to inject washing machine.In the variable pressure switch, the user can be in each control and by selecting being provided with on the relevant rotating disk to change fill level when using washing machine.Yet usually the user can not estimate appropriate fill level exactly or resets mistakenly or adjust water level for each laundry load.This just may cause to the waste of water resource with to adding the energy waste of hot water.
The encouragement that forms such as energy credit for example are provided for the manufacturer in the federal regulations reduces hot water consumption to develop the equipment that the more water and the energy are utilized effectively.Rely on that the user correctly determines and after the water level switch of remembering to reset is not effective power-economizing method recognizing, the manufacturer that management organization no longer gives the washing machine of those user's control water level features uses the credit of restriction for energy.
Therefore, people wish to develop a kind of retaining washing machine that need do not determined fill level by the user.
Summary of the invention
One embodiment of the present of invention provide a kind of method of controlling the washing machine fill level.This method comprises packs the load of cleaning in the washing machine into, in the beginning water filling stage, calculates water injection time and measures water level.The injection rate of measuring is to be determined by water level of measuring and water injection time, and the rate of water injection (signature fill rate) as the mark of washing machine characteristic is compared during with the washing machine unloaded.When the injection rate of measuring equaled the injection rate of mark, the water filling stage finished.
A kind of washing machine is provided in the another embodiment of the present invention, and it comprises the staving of taking in laundry load, obtains the level sensor of the measured value of water level and controller in the water filling stage.The hydraulic valve of washing machine is introduced water in controller control.This controller comprises timer, memory and microprocessor.The injection rate of the mark of washing machine during the microprocessor access unloaded, in the level measuring value of water filling stage reception from sensor, and definite injection rate of measuring.The injection rate that microprocessor compares and measures and the injection rate of mark are closed hydraulic valve when the injection rate of measuring equates substantially with the injection rate of mark.
Another embodiment of the present invention provides a kind of method of controlling the washing machine fill level.This method comprises when containing the cleaning load in the machine bucket, during the water filling stage, measures the injection rate of washing machine.Injection rate through measuring during with unloaded the predetermined labels injection rate of washing machine compare, and when the injection rate of measurement equates with the injection rate of mark, the end of water filling stage.
Another embodiment of the present invention provides a kind of method of controlling the washing machine fill level.This method comprises that opening hydraulic valve begins the water filling stage, monitors injection rate during the water filling stage, measures the fluctuation of injection rate, determines the plateau injection rate and closes hydraulic valve.
By following further describing, but other Application Areas of the present invention can be apparent.It should be understood that following detailed and specific example, in explanation,, do not limit protection scope of the present invention just for purpose of explanation to the preferred embodiment of the present invention.
Description of drawings
The present invention will be further described with description below with reference to accompanying drawing.Assembly among the figure is not used for distinguishing, emphasizing inevitably, but be listed principle of the present invention is described.In addition, identical parts use identical Reference numeral to represent in different accompanying drawings.
Fig. 1 is the perspective view of cutting open according to the part of washing machine of the present invention;
Fig. 2 is the partial cross section figure of washing machine shown in Figure 1;
Fig. 3 is the flow chart according to controller logic of the present invention;
Fig. 4 is according to signal control chart of the present invention;
Fig. 5 is the representative curve figure of water table ratio water injection time.
The specific embodiment
Following preferred embodiment is just made example in itself, and is not to be used for limiting the present invention, its application or use.
Fig. 1 and Fig. 2 illustrate an embodiment according to washing machine 100 of the present invention.Washing machine comprises housing 110, interior bucket 102 and outer bucket 104.Interior bucket 102 comprises perforation 107, and water passes perforation and flows in the interior bucket 102 from outer bucket 104.Interior bucket comprises the agitator 106 that is connected to motor and transmission system 108.Clean load 112 and be introduced into washing in the interior bucket 102.
With reference to figure 1 and Fig. 4, washing machine comprises the console 116 that has the exercisable control panel 114 of user.Console 116 covers on the controller 118, and controller 118 comprises microprocessor 120, memory storing 140 and timer 142.Controller 118 is by control panel 114 reception users' input 122, and user's input 122 comprises wash cycle selection and wash cycle adjuster, for example washing and/or rinsing temperature and kinds of laundry.Controller 118 control hydraulic valves 124 open or close current and regulate hot water and cold water stream according to the temperature setting that the user selects.
Controller 118 is communicated with level sensor 126.Level sensor 126 can be the level sensor 130 that constantly changes, the LL series sensor of " the HoneywellSensing and Control; Milpitas " of commercial available California for example, or other type level sensor, comprise commercial radio frequency sensor, low coverage sensor (proximity sensor), be called in name and disclosedly in the U.S. Patent application of common unexamined of " liquid level sensor of device and correlation technique " quote at this that it is whole as the accurate radio frequency sensor with reference to combination.Radio frequency sensor 128 is installed on the outer bucket 104.Level sensor 126,128 for example is programmed for predetermined time interval periodically, or checks water level continuously, and will represent that the analog or digital signal of water level sends the microprocessor 120 of controller 118 to.
In operation, the user puts into washing machine 100 with the load 112 of cleaning, and utilizes control panel 114 beginning wash cycle.It should be understood that any complete wash cycle all comprises the water filling stage.User's input is delivered to the controller 118 that the control wash cycle is carried out from control panel 114.In the water filling stage, controller 118 open hydraulic valve 124 and outside water enters bucket picked up counting in 104 o'clock.Than shown in the representative curve figure of injection length, injection length is to " t as Fig. 5 middle water level 1" first several seconds, arrive " H corresponding to the water level of the bottom 132 of injecting outer bucket 104 1".To t 1The beginning water injection time depend on the geometry and the hydraulic pressure of each machine, generally can be about 20-30 second.In the chart to time t 1Beginning part be straight line substantially, so represent the chart slope of injection rate, equal tan α 1, be essentially constant.In this part in water filling stage, thereby controller 118 can be calibrated washing machine 100 or determine and will begin injection rate tan α 1Be stored in the memory 140, perhaps revise the injection rate tan α that factory is provided with 2Bucket is 102 the time in current begin to enter, and water arrives at last and cleans load 112.Clean load 112 and absorb moisture gradually and adjust self orientation under the suction weight as far as possible once more, therefore influence injection rate and usually and water level influence each other, thereby cause the nonlinear wave of injection rate.Water table ratio injection length curve is a non-rectilinear in this part in water filling stage thus, is submerged in fully in the water up to cleaning load 112, at time t 2With water level H 2Corresponding.At time t 2After, just after cleaning load 112 was submerged in the water fully, the curve of water table ratio injection length was changed to linearity again, by tan α 2Limit slope, wherein α 1With α 2Substantially the same or have known relationship, a purpose that can be used to calibrate like this.Slope tan α 1With tan α 2Exact value be that the further feature of the geometry of interior bucket 102, outer bucket 104 and size and washing machine 100 is peculiar, and provide the mark of washing machine 100.The mark of each washing machine can by manufacturer determine and in factory storage in microprocessor 120.The injection rate of mark can also be changed between aforesaid alignment epoch.
Flood in order to impel water filling stage cleaning the whole of load 112, controller 118 is at t 1And t 2Between water injection time intercycle ground excitation agitator 106.Agitator 106 distributes cleaning load 112 more fifty-fifty, soaks the inboard at interior bucket 102 equably.Like this, the unexpected interruption or the spike of water level and injection rate are reduced or avoid, and have increased the reliability of level measuring value.
The injection rate that microprocessor 120 receives waterlevel data and determines to measure from level sensor 126, it is by time t 3The tan β at place represents, and t 3Be t in the curve map of representative graph 5 1And t 2Between Measuring Time.Work as t 2The time injection rate measured the become injection rate tan α of basic and mark 2When equating, clean load 112 and be submerged fully, and controller 118 cuts out hydraulic valve 124 and stops the water filling stage, wherein, the injection rate of this mark be factory preset or from tan α 1Revise between alignment epoch.
Water level control flow chart as shown in Figure 3, along with user's input, this process is in 150 beginnings, and wash cycle proceeds to the water filling stage 152, and controller 118 is opened hydraulic valve 124 and picked up counting 154.Sensor 126 is measured the injection water level and is communicated with controller 118 164.Controller 118 is determined injection rate 156.158, the injection rate tan α of the injection rate of measurement and mark 2Relatively, if two a little values are unequal, then process continues.If these values equate, then close hydraulic valve 124 and wash cycle continuation at 160 controllers 118.In one embodiment, can carry out calibration, to pass through to determine tan α at 157 controllers 1And utilize α 1And α 2Between known relation determine or change the injection rate tan α of mark 2
The curve map that it should be understood that the water table ratio time among Fig. 5 is for illustrative purposes.The shape and the characteristic of curve depend on several factors, and it can also comprise water temperature and hydraulic pressure except the size and dimension of interior bucket 102 and barrel 104.Injection rate generally comprises from 0 to t 1Incipient stage in the time interval, t 1And t 2Between transition stage and surpass t 2After stabilization sub stage.Controller 118 monitoring injection rates are up at t 2After reaching stable state, at this moment, close hydraulic valve 124.The beginning of steady-state condition can be determined by the aforesaid injection rate of measuring is compared with the injection rate of mark, or not stop to fluctuate and keeping basicly stable and definite by definite injection rate.
Although various embodiment of the present invention has been described, those skilled in the art should know within the scope of the invention can exist other embodiment and implementation.Therefore, the present invention is not limited by other except that claims and its equivalent.

Claims (20)

1. method of controlling the washing machine fill level, this method comprises:
To clean load placed in described washing machine;
The beginning water filling stage;
Calculate water injection time;
Measure water level;
Water level and the definite injection rate of measuring of water injection time from described measurement;
The injection rate of the distinctive mark of described washing machine is compared during with unloaded with the injection rate of described measurement; With
When the injection rate of described measurement equates with the injection rate of described mark, finish the described water filling stage.
2. the method for claim 1 is wherein measured described water level and is comprised that the use level sensor obtains the level measuring value.
3. the method for claim 1 also comprises and stirs described cleaning load.
4. the method for claim 1 also comprises the injection rate of reseting described mark.
5. the method for claim 1, the beginning that also is included in the described water filling stage are partly by determining that injection rate revises the injection rate of described mark.
6. method as claimed in claim 5 is wherein partly determined described injection rate in the beginning in described water filling stage, comprising:
Described beginning part in the described water filling stage is calculated water injection time;
Described beginning part in the described water filling stage is measured described water level.
7. the method for claim 1 also comprises by the injection rate of revising and store described mark and calibrates described washing machine.
8. method as claimed in claim 4 also comprises by the injection rate of revising and store described mark and calibrates described washing machine.
9. automatic washing machine comprises:
The bucket of accommodating laundry load;
During the water filling stage, operationally obtain the level sensor of level measuring value;
The controller of control hydraulic valve, this hydraulic valve is used for water is introduced in the washing machine, this controller comprises timer, memory and microprocessor, the injection rate of the mark during wherein said microprocessor access washing machine unloaded, during the described water filling stage, receive described level measuring value from described sensor, described microprocessor is programmed to determine the injection rate of measurement, the injection rate of more described measurement and the injection rate of mark, and when described measurement injection rate equates substantially with the injection rate of described mark, close hydraulic valve.
10. washing machine as claimed in claim 9, wherein said level sensor are the continually varying pressure sensors.
11. washing machine as claimed in claim 9, wherein said level sensor are the low coverage sensors.
12. washing machine as claimed in claim 9, wherein said level sensor is a radio frequency sensor.
13. a method of controlling the washing machine fill level, this method comprises:
During the water filling stage, measure the injection rate of described washing machine, comprise the cleaning load in the interior bucket of described machine;
The injection rate of the mark of washing machine when the injection rate of more described measurement and unloaded; With
When the injection rate of described measurement equates with the injection rate of described mark, finish the described water filling stage.
14. method as claimed in claim 13 also comprises the load of stirring described cleaning.
15. method as claimed in claim 13 also comprises:
Before the described cleaning load in water arrival is described in the bucket, calibrate described washing machine; With
During the beginning part in described water filling stage, revise the injection rate of described mark by determining injection rate.
16. method as claimed in claim 15 is wherein determined described injection rate during the beginning part in described water filling stage, comprising:
Described beginning part in the described water filling stage is calculated described water injection time;
During the beginning part in described water filling stage, measure described water level.
17. method as claimed in claim 15 also comprises the injection rate of reseting the mark in the described machine.
18. a control has the method for the fill level of the washing machine that cleans load, this method comprises:
Open hydraulic valve and begin the water filling stage;
At described water filling stage monitoring injection rate;
Measure the fluctuation of described injection rate;
Determine the injection rate of stable state; With
Close described hydraulic valve.
19. method as claimed in claim 18 determines that wherein the stable state injection rate comprises stopping substantially of the fluctuation of measuring injection rate.
20. method as claimed in claim 18 determines that wherein the stable state injection rate also comprises:
The injection rate of more described monitoring and the injection rate of expection; With
Whether the injection rate of determining described monitoring equates with described predetermined injection rate basically.
CNA2005100016551A 2004-02-03 2005-02-03 Washing machine with water control and associated method Pending CN1651635A (en)

Applications Claiming Priority (2)

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US10/770,594 2004-02-03
US10/770,594 US20050166334A1 (en) 2004-02-03 2004-02-03 Washing machine with water control and associated method

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CN101082165B (en) * 2006-05-31 2011-03-23 博西华电器(江苏)有限公司 Control method for barrel washing machine water inflow
CN102169006A (en) * 2010-12-31 2011-08-31 海尔集团公司 Method for automatically calibrating water level of washing machine
CN102677433A (en) * 2012-03-16 2012-09-19 海尔集团公司 Washing machine inflow judging method and washing machine applying same
CN102695828A (en) * 2009-12-23 2012-09-26 Lg电子株式会社 Washing method and washing machine
CN102770595A (en) * 2009-12-23 2012-11-07 Lg电子株式会社 Washing method and washing machine
CN110219135A (en) * 2017-03-09 2019-09-10 合肥龙图腾信息技术有限公司 A kind of washing machine water amount control system
CN111041773A (en) * 2019-12-09 2020-04-21 无锡小天鹅电器有限公司 Clothes treatment equipment, control method and device thereof and storage medium
CN112522910A (en) * 2019-08-30 2021-03-19 青岛海尔洗衣机有限公司 Abnormity detection method for washing machine

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KR101065258B1 (en) * 2009-09-01 2011-09-19 우성전기공업 주식회사 Apparatus for guarding of pressure sensor mounting in washing machine
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CN104018314B (en) * 2013-02-28 2017-11-24 青岛海尔洗衣机有限公司 With the control method and automatic washing machine of laundry machine washing down jackets
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KR102466662B1 (en) * 2016-06-14 2022-11-14 엘지전자 주식회사 Washing machine and method for contolling the same
US11746455B1 (en) * 2017-08-21 2023-09-05 Alfred Wade Muldoon Washload composition detection
US10612175B2 (en) 2017-09-28 2020-04-07 Midea Group Co., Ltd. Automatic color composition detection for laundry washing machine
US11234577B2 (en) * 2020-01-22 2022-02-01 Haier Us Appliance Solutions, Inc. System and method for calibrating a wash fluid level detection system in a dishwasher appliance
US11371175B2 (en) 2020-06-04 2022-06-28 Midea Group Co., Ltd. Laundry washing machine with dynamic selection of load type
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CN101082165B (en) * 2006-05-31 2011-03-23 博西华电器(江苏)有限公司 Control method for barrel washing machine water inflow
CN102770595B (en) * 2009-12-23 2015-11-25 Lg电子株式会社 There is washing methods and the washing machine of the flow relocity calculation of washings
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CN102695828A (en) * 2009-12-23 2012-09-26 Lg电子株式会社 Washing method and washing machine
CN102770595A (en) * 2009-12-23 2012-11-07 Lg电子株式会社 Washing method and washing machine
CN102695828B (en) * 2009-12-23 2015-03-25 Lg电子株式会社 Washing method and washing machine
CN102169006A (en) * 2010-12-31 2011-08-31 海尔集团公司 Method for automatically calibrating water level of washing machine
CN102169006B (en) * 2010-12-31 2016-01-13 海尔集团公司 A kind of method of automatic calibration water level of washing machine
CN102677433A (en) * 2012-03-16 2012-09-19 海尔集团公司 Washing machine inflow judging method and washing machine applying same
CN102677433B (en) * 2012-03-16 2017-11-24 青岛海尔滚筒洗衣机有限公司 Washing machine inflow determination methods and its washing machine
CN110219135A (en) * 2017-03-09 2019-09-10 合肥龙图腾信息技术有限公司 A kind of washing machine water amount control system
CN110219135B (en) * 2017-03-09 2021-01-26 宁波凯祥智能科技有限公司 Water quantity control system of washing machine
CN112522910A (en) * 2019-08-30 2021-03-19 青岛海尔洗衣机有限公司 Abnormity detection method for washing machine
CN112522910B (en) * 2019-08-30 2024-02-20 重庆海尔滚筒洗衣机有限公司 Abnormality detection method for washing machine
CN111041773A (en) * 2019-12-09 2020-04-21 无锡小天鹅电器有限公司 Clothes treatment equipment, control method and device thereof and storage medium

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