EP2507427B1 - Method to control a filling of a washing machine tub with water, and washing machine that implements such method - Google Patents

Method to control a filling of a washing machine tub with water, and washing machine that implements such method Download PDF

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Publication number
EP2507427B1
EP2507427B1 EP10784805.3A EP10784805A EP2507427B1 EP 2507427 B1 EP2507427 B1 EP 2507427B1 EP 10784805 A EP10784805 A EP 10784805A EP 2507427 B1 EP2507427 B1 EP 2507427B1
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EP
European Patent Office
Prior art keywords
water
washing
tub
washing tub
washing machine
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.)
Active
Application number
EP10784805.3A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2507427A1 (en
Inventor
Luis Javier Ferreruela Blesa
Carlos DONAIRE CLAVERÍA
Pedro Luis Gascon Dominguez
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.)
BSH Hausgeraete GmbH
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BSH Hausgeraete GmbH
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Publication date
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Priority to PL10784805T priority Critical patent/PL2507427T3/pl
Publication of EP2507427A1 publication Critical patent/EP2507427A1/en
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Publication of EP2507427B1 publication Critical patent/EP2507427B1/en
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    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F33/00—Control of operations performed in washing machines or washer-dryers 
    • D06F33/30—Control of washing machines characterised by the purpose or target of the control 
    • D06F33/32—Control of operational steps, e.g. optimisation or improvement of operational steps depending on the condition of the laundry
    • D06F33/34—Control of operational steps, e.g. optimisation or improvement of operational steps depending on the condition of the laundry of water filling
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
    • D06F2103/18—Washing liquid level
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F2105/00—Systems or parameters controlled or affected by the control systems of washing machines, washer-dryers or laundry dryers
    • D06F2105/02—Water supply
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F2105/00—Systems or parameters controlled or affected by the control systems of washing machines, washer-dryers or laundry dryers
    • D06F2105/58—Indications or alarms to the control system or to the user
    • 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 
    • D06F39/08—Liquid supply or discharge arrangements
    • D06F39/087—Water level measuring or regulating devices
    • 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 
    • D06F39/08—Liquid supply or discharge arrangements
    • D06F39/088—Liquid supply arrangements

Definitions

  • the invention relates to a method for controlling a water filling of a washing tub of a washing machine, said washing machine comprising a washing tub fillable with water and in hydraulic connection with at least two water inlets connectable to corresponding external water intakes, a control valve at each water inlet for opening and closing the water flow-through from the external water intakes towards the washing tub, and a water level sensor for detecting a pre-determined maximum water level in the washing tub.
  • the invention relates to a washing machine comprising a washing tub fillable with water and in hydraulic connection with at least two water inlets connectable to corresponding external water intakes, a control valve at each water inlet for opening and closing the water flow-through from the external water intakes towards the washing tub, and a water level sensor for detecting a pre-defined maximum water level in the washing tub.
  • the invention relates to the field of methods for controlling the addition of water to fill a tub of a washing machine, the washing machine comprising a tub fillable with water and hydraulically connected to at least two water inlets connectable to corresponding water supply intakes, a control valve in each water inlet to open up and close off the water flow from the supply intakes to the tub, and a water level sensor to detect a predetermined maximum water level in the tub, as well as to the field of washing machines using methods of this type.
  • Washing machines are known that have two water inlets connected upstream to corresponding water supply intakes, generally one intake for cold water and another for hot water going downstream to a tub.
  • the purpose of the hot water intake is to reduce the consumption of electricity required by the washer to run the electrical resistance heater that heats the wash water inside the tub during the wash cycles in which hot water is required.
  • Each of the water inlets is attached to a control valve that controls the flow of water from the supply intake to the tub.
  • These control valves are controlled by a function timer.
  • the timer is programmed with a method to control the filling of the tub and at the beginning of the hot water wash cycle controls the opening of both valves so that the tub is filled to a predetermined level limited by a level sensor.
  • the filling time depends on the water flow rate allowed by the supply intakes. If the flow rate is low, the time increases. If there is no flow in one of the water intakes, the machine does not continue the wash cycle and warns the user of the error. This is a problem in houses where there is no hot water supply intake since the machine will shut off.
  • machines are provided with a "Y-shaped" device to direct the water from one water supply intake to both water inlets of the machine.
  • Another solution in some machines is simply to take water in from the connected inlet without shutting off the machine with the disadvantage that the user will not know if the machine is improperly connected if both supply intakes are connected, and with the disadvantage that a low incoming water temperature will require the resistance heater to take more time to achieve the washing temperature.
  • An object of the present invention thus is a method that solves the problems of the state of the art and that makes the filling of a washing machine tub more efficient. Another object is to provide a washing machine implementing such method.
  • a method for controlling addition of water to fill a tub of a washing machine comprising a tub fillable with water and hydraulically connected to at least two water inlets connectable to corresponding external water supply intakes, a control valve in each water inlet to open up and close off the water flow from the external water supply intakes to the tub, and a water level sensor to detect a predetermined maximum water level in the tub; wherein the method, at a beginning of a wash cycle, comprises steps of:
  • the water inlets are connected by water lines to the water supply intakes, which must be opened to allow water to flow into the control valves.
  • the water supply intakes will normally provide hot and cold water, respectively.
  • the water inlets are hydraulically connected to the tub by means of water connection lines.
  • the control valves may be solenoid valves typically used in these appliances.
  • the level detector may be a pressure switch connected by means of a pressure gauge chamber to the tub, which when filled with water causes the air inside the chamber to indicate the pressure and thereby the water level inside the tub.
  • a Y-shaped connection between the water connection lines and the tub is not necessary since the machine shuts off only if the required water level is not reached within a predetermined time interval. This means that either the user has not opened the water flow from the external water supply intake or the machine is not connected, or that the machine is broken and is leaking water. In any of these cases, the wash cycle is suspended. In this manner as well, the filling of the tub with water begins only from a single external water intake and there is no mixing, which is advantageous to the user.
  • the washing machine also comprises a water flow sensor at least in the control valve of the first water inlet to detect water flow into the tub entering through the first water inlet, wherein the method, at the beginning of the wash cycle after opening the first control valve to allow water to flow into the tub, in addition comprises the steps of,
  • the flow sensor may be a flowmeter, which can be placed at any point in the water circuit between the external water intake and the tub inlet and which, when the control valve for the first water inlet is opened, measures the flow rate of water passing through it. Having a flow sensor such as in the present invention saves time since there is no need to wait for the predetermined time interval for filling the tub, and it immediately closes the first control valve and opens the second water inlet to fill the tub.
  • the washing machine preferredly also comprises an alarm device to alert the user that there is a problem with the water supply to the tub, and after canceling the wash cycle, the method also generates an alarm signal. It can also signal when the second water inlet is open to let the user know that, for whatever reason, the first water inlet is not supplying the washing machine.
  • the washing machine also comprises a water flow sensor in the control valve of the second water inlet to detect a predetermined minimum water flow entering the tub through the second water inlet, wherein after opening the second control valve to allow water to flow into the tub, the method measures the flow rate of water entering the tub and goes through the steps of measuring the water level in the tub, and if the maximum water level has been reached, continues the wash cycle or if the maximum water level has not been reached within a predetermined time, cancels the wash cycle.
  • the flow sensor is a flowmeter that can be placed at any point in the water circuit between the external water intake and the inlet to the tub, and which, when the control valve for the second water inlet is open, measures the flow rate of water passing through it. Having a flow sensor such as in the present invention saves time since there is no need to wait to measure the predetermined time for filling the tub and, if there is no flow, the wash cycle can be canceled immediately.
  • the washing machine comprises a water flow sensor at least in the control valve of the first water inlet to detect a predetermined minimum water flow entering through the first water inlet to the tub, wherein the method at the beginning of the wash cycle after opening the first control valve to allow water to flow into the tub, in addition, comprises the steps of,
  • Another object of the present invention is a washing machine with a method for controlling a water filling that solves the problems of the machines of the state of the art and that operates more efficiently.
  • a washing machine that has a tub that is fillable with water and is hydraulically connected to at least two water inlets that are connectable to corresponding external water intakes, a control valve in each water inlet to open up and close off the flow of water from the external water intakes to the tub, and a water level sensor to detect a predefined maximum water level in the tub, and control means for implementing the method of the present invention.
  • the washing machine also comprises a water flow sensor at least in the first control valve of the first water inlet to detect water flow entering the tub through the first water inlet.
  • the first water inlet is connectable to a hot water supply intake and the second inlet is connectable to a cold water supply intake.
  • the first water inlet is connectable to a water reservoir tank and the second water inlet is connectable to a cold water supply intake, and in an advanced version, the water reservoir tank is a recycled water reservoir tank.
  • the water reservoir tank is a recycled water reservoir tank.
  • the washing machine is provided with control means including an alarm device to provide an alarm when the wash cycle is canceled, and also when the control valve of the second water inlet has opened because the first inlet did not fill the tub.
  • control means including an alarm device to provide an alarm when the wash cycle is canceled, and also when the control valve of the second water inlet has opened because the first inlet did not fill the tub.
  • the alarm signal it is desirable for the alarm signal to be produced only on time in the first wash cycle in which no water has entered yet through the hot water supply intake.
  • the user will check the connection if a hot water supply intake if present, and if it is not present, an alarm signal will not be observed at the beginning of every wash cycle.
  • FIG. 1 shows a washing machine 10 that has a tub 20 fillable with water and hydraulically connected to at least two water inlets 30, 40 connectable to corresponding water supply intakes 31, 41, one with hot water 31 and one with cold water 41.
  • the washing machine also has a control valve 32, 42 in each water inlet, a first control valve 32 for opening up and closing off the flow of water from the hot water intake 31 to the tub 20, and a second control valve 42 for opening up and closing off the flow of water from the cold water intake 41 to the tub 20.
  • the washing machine 10 has a water level sensor 50 to detect the predefined maximum water level in the tub 20, and in addition a first water flow sensor 33 in the first control valve 32 of the first water inlet 30 to detect a water flow passing through the first water inlet 30 to the tub 20, and a second water flow sensor 43 in the second control valve 42 of the second water inlet 40 to detect water flow passing through the second water inlet 40 to the tub 20.
  • the washing machine has a control means 60 for implementing the method for controlling the filling of the tub 20.
  • the control method is utilized especially in wash cycles in which it is desired to wash with water at a temperature above 40 °C. Water from the hot water supply inlet is normally supplied at this temperature.
  • the method comprises the steps of opening the hot water control valve 32 to allow water to flow to the tub 20, measuring the water flow with the flow sensor 33, and if there is hot water flow, measuring the water level with the level sensor 50 in the tub 20, and if a predefined maximum water level has been reached, continuing the wash cycle. If the maximum water level has not been reached within a predetermined time, the wash cycle is canceled since a malfunction of the machine is assumed.
  • the cold water control valve 42 is opened to allow cold water to flow to the tub 20, the water flow is measured with the flow sensor 43, and if cold water is flowing, then the water level in the tub 20 is measured by the level sensor 50, and if the predefined maximum water level has been reached, the wash cycle is continued. If the maximum water level has not been reached within a predetermined time, the wash cycle is canceled since a malfunction of the machine is assumed.
  • the control means 60 When the cold water valve 32 is opened, the control means 60 is provided with an alarm device to alert the user during the first wash cycle that there is no hot water intake. No alarm will be given in future wash cycles unless in a future wash cycle the user should connect the hot water intake 31 to the first water inlet 30 and then disconnect it in a later cycle.
  • the alarm device that is provided for, moreover, warns that the wash cycle has been canceled.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Control Of Washing Machine And Dryer (AREA)
  • Detail Structures Of Washing Machines And Dryers (AREA)
  • Washing And Drying Of Tableware (AREA)
EP10784805.3A 2009-12-03 2010-12-01 Method to control a filling of a washing machine tub with water, and washing machine that implements such method Active EP2507427B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL10784805T PL2507427T3 (pl) 2009-12-03 2010-12-01 Sposób sterowania napełnianiem wodą kotła do prania w pralce i pralka, która realizuje ten sposób

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ES200931108A ES2376127B1 (es) 2009-12-03 2009-12-03 Método para el control de llenado de agua de una cuba de lavado de una máquina lavadora y máquina lavadora que ejecuta dicho método.
PCT/EP2010/068632 WO2011067285A1 (en) 2009-12-03 2010-12-01 Method to control a filling of a washing machine tub with water, and washing machine that implements such method

Publications (2)

Publication Number Publication Date
EP2507427A1 EP2507427A1 (en) 2012-10-10
EP2507427B1 true EP2507427B1 (en) 2015-05-27

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Application Number Title Priority Date Filing Date
EP10784805.3A Active EP2507427B1 (en) 2009-12-03 2010-12-01 Method to control a filling of a washing machine tub with water, and washing machine that implements such method

Country Status (6)

Country Link
EP (1) EP2507427B1 (zh)
CN (1) CN102639777B (zh)
EA (1) EA022681B1 (zh)
ES (1) ES2376127B1 (zh)
PL (1) PL2507427T3 (zh)
WO (1) WO2011067285A1 (zh)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2982793B1 (en) * 2014-08-06 2017-05-17 Electrolux Appliances Aktiebolag Method for operating a laundry washing machine
CN107307824A (zh) * 2017-06-28 2017-11-03 佛山市顺德区美的洗涤电器制造有限公司 洗碗机及其进水控制方法
KR102437949B1 (ko) * 2017-07-06 2022-09-01 엘지전자 주식회사 세탁물 처리 장치의 제어 방법
CN109750446A (zh) * 2017-11-01 2019-05-14 松下知识产权经营株式会社 洗衣机及其控制方法
CN108755004B (zh) * 2018-05-30 2023-08-18 青岛海尔洗衣机有限公司 一种洗衣机的进水控制方法及洗衣机

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KR920006360B1 (ko) * 1989-12-29 1992-08-03 삼성전자 주식회사 세탁기의 급수밸브 구동방법
DE4235600A1 (de) * 1992-10-22 1994-04-28 Licentia Gmbh Programmgesteuerte Waschmaschine mit Warm- und Kaltwasseranschluß
US5439019A (en) * 1993-10-22 1995-08-08 Speed Queen Company Method and apparatus for filling a wash tub of an automatic clothes washer
KR100226350B1 (ko) * 1997-06-11 1999-10-15 전주범 정온 제어기능을 갖는 세탁기에서 고온으로부터 세탁물 보호방법
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ES2288049B1 (es) * 2004-03-23 2008-11-01 Andres Golbano Colom Sistema de reutilizacion de agua en instalaciones que contengan dispositivos de refrigeracion.
KR101067963B1 (ko) * 2004-07-08 2011-09-26 엘지전자 주식회사 세탁기의 급수 제어장치 및 방법
CN100570042C (zh) * 2004-10-18 2009-12-16 宝洁公司 清洗衣物时减少分类的方法
KR20060081043A (ko) * 2005-01-06 2006-07-12 삼성전자주식회사 세탁기 및 그 급수제어방법
CN101130922B (zh) * 2006-08-22 2011-04-13 杭州松下家用电器有限公司 全自动洗衣机双进水阀进水控制方法
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Also Published As

Publication number Publication date
PL2507427T3 (pl) 2015-11-30
EA022681B1 (ru) 2016-02-29
EA201270645A1 (ru) 2013-01-30
ES2376127B1 (es) 2013-02-04
ES2376127A1 (es) 2012-03-09
EP2507427A1 (en) 2012-10-10
CN102639777A (zh) 2012-08-15
WO2011067285A1 (en) 2011-06-09
CN102639777B (zh) 2015-05-13

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