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EP0159202A1 - Waschmaschine mit automatischer Ermittlung von Belastung und Wäscheart - Google Patents

Waschmaschine mit automatischer Ermittlung von Belastung und Wäscheart Download PDF

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Publication number
EP0159202A1
EP0159202A1 EP85400149A EP85400149A EP0159202A1 EP 0159202 A1 EP0159202 A1 EP 0159202A1 EP 85400149 A EP85400149 A EP 85400149A EP 85400149 A EP85400149 A EP 85400149A EP 0159202 A1 EP0159202 A1 EP 0159202A1
Authority
EP
European Patent Office
Prior art keywords
drum
washing machine
water
laundry
machine according
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.)
Granted
Application number
EP85400149A
Other languages
English (en)
French (fr)
Other versions
EP0159202B1 (de
Inventor
Laurent Didier
Jean-Claude Geay
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.)
Esswein SA
Original Assignee
Esswein SA
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 Esswein SA filed Critical Esswein SA
Priority to AT85400149T priority Critical patent/ATE84332T1/de
Publication of EP0159202A1 publication Critical patent/EP0159202A1/de
Application granted granted Critical
Publication of EP0159202B1 publication Critical patent/EP0159202B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F34/00—Details of control systems for washing machines, washer-dryers or laundry dryers
    • D06F34/14—Arrangements for detecting or measuring specific parameters
    • D06F34/18—Condition of the laundry, e.g. nature or weight
    • 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
    • D06F2103/02—Characteristics of laundry or load
    • D06F2103/04—Quantity, e.g. weight or variation of weight
    • 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
    • D06F2103/02—Characteristics of laundry or load
    • D06F2103/06—Type or material
    • 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
    • D06F2103/16—Washing liquid temperature
    • 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
    • D06F2103/38—Time, e.g. duration
    • 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
    • D06F2103/44—Current or voltage
    • D06F2103/46—Current or voltage of the motor driving the drum
    • 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
    • D06F2105/10—Temperature of washing liquids; Heating means therefor
    • 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
    • D06F2105/46—Drum speed; Actuation of motors, e.g. starting or interrupting
    • D06F2105/48—Drum speed

Definitions

  • the invention relates to a washing machine.
  • the operating program of a washing machine depends on a number of parameters which are: the type of laundry, the degree of sallssure, the desired temperature for washing and possibly the quantity of laundry.
  • An automatic washing machine therefore has a programmer which, on the basis of this data displayed by the user, determines a program, that is to say: a washing duration and / or a stirring energy (number of rotations of the drum containing the laundry), possibly a washing water heating temperature (if it was not displayed directly by the user), if necessary - if a data is entered depending on the quantity of laundry - the volume of washing water, a number of rinses, and a speed of rotation of the drum to perform the spin.
  • the washing machine is characterized in that, in order to determine the load of laundry (percentage of the volume of the drum which is occupied by the laundry) in the drum, it comprises, in order to measure the moment of inertia of the laundry relative to the axis of rotation of the drum, a means for determining the drive torque of the drum at constant acceleration of the latter.
  • a means for determining the drive torque of the drum at constant acceleration of the latter.
  • the laundry load is thus determined very simply.
  • this measurement of the load of laundry is used to automatically determine the type of laundry introduced into the machine and thus to select the washing program.
  • a means is provided for measuring the amount of water absorbed by the dry or practically dry laundry.
  • the quantities of water absorbed by dry laundry for the same mass or for the same machine load vary from one type of laundry to another.
  • linen made of synthetic fabric absorbs approximately one liter of water per kilogram, cotton linen two liters per kilogram and terry linen four liters per kilogram.
  • a drum of a given type contains, when fully loaded, either five kilograms of cotton linen, or four kilograms of terry cloth, or three kilograms of synthetic cloth linen ; in this case for the full load of this drum the volumes of water absorbed by the dry linen are: ten liters for cotton linen, sixteen liters for terry linen and three liters for synthetic fabric linen.
  • the signal representing the load of laundry and possibly the type of laundry is used to impose constraints on the machine's operating program.
  • the indication of the size representing the load of linen, combined with the type of linen, linen provides an optimum quantity - from an economic point of view - of water, to be introduced into the machine tank.
  • the program preferably implanted in a microprocessor, will impose that the washing temperature cannot exceed 60 ° C.
  • the signal representing the quantity of water absorbed will have a value between two characteristic values.
  • the program selected will be that corresponding to the characteristic value closest to the actual value of the signal. Since users have hitherto been used to washing cotton and terry cloth together, it is preferable not to require them to sort between these two types of linen. This is why the signal representing the quantity of water absorbed by the linen selects from only two possibilities: one for cotton and / or terry linen (cotton type) and the other for fabric linen. synthetic (synthetic type).
  • a thermistor fixed to the internal face is preferably used of a wall of the tank and which is supplied with a sufficiently high voltage so that it is heated by the Joule effect.
  • this thermistor bathes in water its temperature decreases and therefore its resistance changes. It is this variation in resistance that is used to detect the arrival of water.
  • this thermistor can be used to measure the temperature of the wash water. It is preferable that the thermistor is placed in a housing such that it is protected against drops of water which could reach it during filling, before the predetermined level is reached.
  • the washing machine is of the tub type 10 (FIGS. 1, 2, 3 and 3a), of generally cylindrical shape limited by vertical side walls 11, inside which a drum 12 also turns d horizontal axis 20, the cylindrical peripheral wall 13 and / or the vertical side walls 14 are perforated to allow this drum 12, which contains the linen 14 a , to have the water 15 introduced into the tank through a solenoid valve 16.
  • This washing machine is controlled by a microprocessor (not shown) which acts through interface circuits (also not shown) on the solenoid valve 16, on the motor - of the universal type in the example - for driving the drum 12, on the supply of the resistor 17 for heating the water disposed at the bottom of the tank 10 and possibly on means (not shown) for introducing detergents, bleaches, softeners, etc.
  • a microprocessor not shown which acts through interface circuits (also not shown) on the solenoid valve 16, on the motor - of the universal type in the example - for driving the drum 12, on the supply of the resistor 17 for heating the water disposed at the bottom of the tank 10 and possibly on means (not shown) for introducing detergents, bleaches, softeners, etc.
  • the invention makes it possible to optimize, in an extremely simple manner, the operating program of the machine, that is to say to adapt it as best as possible to the quantity and to the type of linen introduced into the drum 12 in order to obtain the maximum washing efficiency and this while minimizing the amount of water used.
  • user intervention is reduced to a minimum.
  • the machine's operating program takes account of data representing the load or mass of laundry introduced into the drum and the type of laundry (synthetic, sponge or cotton).
  • the parameter representing the quantity of linen introduced into the drum is, in the example, the moment of inertia L of this linen with respect to the axis 20 of rotation of said drum 12. It is in fact understood that for a given type of laundry having a specific density, the volume occupied by this laundry in the drum varies with the quantity and, therefore, its moment of inertia increasing with the volume, the greater the quantity of laundry, the greater the moment of inertia. For the same volume, for example the drum 12 completely filled, the density is different depending on the type of laundry; it follows that the moment of inertia is different depending on the type of laundry. Thus the same drum can be filled with 4 kilograms of terry cloth, 5 kilograms of cotton linen and 3 kilograms of synthetic linen.
  • the moment of inertia L of the laundry only depends on the intensity of the electric current passing through the universal motor.
  • the drum Before filling the tank with water, the drum is forced into a program which is represented by the diagram in FIG. 4 which represents the variations, as a function of time t, of the speed V of rotation of the drum. Between instants t 1 and t 2, the drum is made to rotate at a slightly increasing speed so that at time t 2 it reaches a speed of rotation of the order of 100 revolutions per minute.
  • This first phase aims to distribute the laundry evenly in the drum in order to avoid unbalance, which is dangerous for the machine.
  • the rotation of the drum is accelerated, at a constant and determined value.
  • the drive torque has a significantly higher value. It follows of course that the effective intensity I v34 ( Figure 5) of the current absorbed by the motor is higher. Then, between instants t 4 and t 5 the speed of drum rotation is kept constant at a value of the order of 500 to 800 revolutions per minute. In this last phase, the drive torque is only equal to the torque necessary to overcome friction.
  • I 34 is the effective intensity of the electric current passing through the drum drive motor between times t 3 and t 4 and C f 34 is the friction torque, also between times t 3 and t 4 .
  • K, I o and acceleration are constants imposed during the construction of the machine; they are therefore known.
  • 1 34 is measured for example by determining the voltage across a resistor in series with the motor.
  • C f 34 is not directly measurable; in the present case, it is estimated that C f 34 is the arithmetic mean between the friction torque C f 23 , between the instants t 2 and t 3 , and the friction torque C f 45 between the instants t 4 and t 5 .
  • C f 34 is the arithmetic mean between the friction torque C f 23 , between the instants t 2 and t 3 , and the friction torque C f 45 between the instants t 4 and t 5 .
  • C f 2 3 and C f 4 5 are easily measurable by the intensities I 23 and I 45 of the currents flowing through the universal motor between the times t 2 and t 3 and t 4 and t 5 respectively .
  • FIG. 6 shows the variations of this intensity I 34 as a function of the mass.
  • Curve E in solid lines corresponds to terry cloth while curve D in lines interrupted corresponds to cotton or synthetic linen.
  • I M 34 corresponds to three kilograms of terry cloth or four kilograms of cotton or synthetic linen.
  • the curve of variation of the intensity 1 34 as a function of the load of linen (that is to say the percentage of volume of the drum occupied by the linen) is the same curve F independent of the type of linen.
  • this volume represents 70% of that of the drum.
  • the intensity 1 34 cannot represent the type of linen introduced into the drum. It is only the amount of water absorbed by the laundry that, in combination with the load, gives an indication of the type of laundry. At full load (100%) the terry cloth absorbs 16 liters of water, the cotton cloth 10 liters of water and the synthetic cloth 3 liters of water. It is therefore sufficient to make the ratio between the quantity of water absorbed and the intensity 1 3 4 to obtain a precise indication of the type of laundry.
  • the program contained in the microprocessor provided for controlling the machine can thus choose the operating parameters of the various organs to adapt the program to the type of laundry: engine timing, number of rinses, washing temperature, spin speed and also amount of water used for each wash and each rinse.
  • two types of program are provided, one which corresponds to cotton linen or terry linen and the other to synthetic linen, which makes it possible to mix terry linen with cotton linen.
  • the side wall 11 of the tank 10 has, opposite the bottom 30 of the drum 12 (FIG. 3), an opening 31 sealed through, by a seal 32, by a bowl cylindrical 33 open inside the tank and closed by a bottom 34 in its part external to the tank.
  • This last part has a cylindrical sleeve 35 with a horizontal axis parallel to the vertical wall 11, and therefore perpendicular to the axis of the cylindrical bowl 33, which tightly connects two diametrically opposite openings 36 and 37 (FIG. 3a) of the cylindrical wall of the bowl.
  • the external surface of the sleeve 35 can bathe in water while the interior of this sleeve is isolated from water.
  • a thermistor 38 connected to a power source (not shown) having a sufficient voltage to heat this thermistor by Joule effect.
  • the thickness of the wall of the sleeve 35 is small so that the thermistor 38 can be in good thermal contact with water 15.
  • the temperature of the thermistor 38 is higher than the ambient temperature and the temperature of the water.
  • the temperature of the thermistor 38 drops and its resistance varies; this resistance variation is used to detect the arrival of water at level 40 where the sleeve 35 is located, that is to say at a low height h, for example of the order of 1.5 centimeters, above the bottom 30 of the drum.
  • a low height h for example of the order of 1.5 centimeters, above the bottom 30 of the drum.
  • the diameter of the drum being between 40 and 50 cm, the height h represents approximately 3% of the diameter of the drum.
  • a time t elapses which is measured for example using the microprocessor mentioned above.
  • the drum 12 is stationary.
  • the linen 14 practically does not absorb water because of the low height of the level 40 above the bottom 30.
  • the drum is rotated, preferably at a speed of 30 rpm - lower than the speed of 50 rpm for washing or rinsing - so that the entire periphery of the laundry is bathed in water.
  • This cloth absorbs water and the free surface of the water 15 descends below level 40 to level 41; this state is shown in FIG. 2.
  • the measurement of the durations t ' is interrupted when the free surface of the water remains at level 40; for this purpose, the microprocessor is programmed so that it considers the filling completed, the laundry being completely soaked with water, when the free surface remains at level 40 approximately two minutes after the last closing of the solenoid valve 16.
  • V 0 is the volume of water contained in the tank when the free surface is at level 40
  • the flow q of the solenoid valve 16 is: it follows that the volume of water absorbed by the laundry is:
  • the thermistor is distant from the trajectory of the water drops coming from the impact of the water leaving the solenoid valve against the water already filling the tank. In addition, it is protected against turbulence.
  • the sleeve 35 contributes to this result.
  • the measurement of the moment of inertia of the dry laundry is carried out prior to the measurement of the durations t and t '.
  • a bimetallic strip is used to control the opening and closing of the solenoid valve 16.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Control Of Washing Machine And Dryer (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Force Measurement Appropriate To Specific Purposes (AREA)
EP85400149A 1984-02-17 1985-01-29 Waschmaschine mit automatischer Ermittlung von Belastung und Wäscheart Expired - Lifetime EP0159202B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT85400149T ATE84332T1 (de) 1984-02-17 1985-01-29 Waschmaschine mit automatischer ermittlung von belastung und waescheart.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8402437 1984-02-17
FR8402437A FR2559796B1 (fr) 1984-02-17 1984-02-17 Lave-linge a determination automatique du type de linge introduit dans cette machine

Publications (2)

Publication Number Publication Date
EP0159202A1 true EP0159202A1 (de) 1985-10-23
EP0159202B1 EP0159202B1 (de) 1993-01-07

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EP85400149A Expired - Lifetime EP0159202B1 (de) 1984-02-17 1985-01-29 Waschmaschine mit automatischer Ermittlung von Belastung und Wäscheart

Country Status (3)

Country Link
EP (1) EP0159202B1 (de)
AT (1) ATE84332T1 (de)
FR (1) FR2559796B1 (de)

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2202332A (en) * 1987-03-14 1988-09-21 Toshiba Kk Washing weight detection and washing operation control system
EP0345120A1 (de) * 1988-05-31 1989-12-06 Ciapem Waschmaschine oder Trockner mit automatischer Messung des Gewichts der Wäsche
EP0483906A1 (de) * 1990-10-29 1992-05-06 Whirlpool Europe B.V. Verfahren und Vorrichtung zum Erfassen der Wäscheart in einer Waschmaschine oder dergleichen
WO1992009017A1 (en) * 1990-11-08 1992-05-29 Griverus Bernt Methods and devices for control of fluidic systems
EP0523864A1 (de) * 1991-06-28 1993-01-20 General Electric Company Elektronische Waschmaschinensteuerung mit einer automatischen Erfassung des Wäschegewichts und der Wäscheart
EP0536542A1 (de) * 1991-10-11 1993-04-14 Zanussi Elettrodomestici S.p.A. Verfahren zum Erfassen des Wäschegewichts in Waschmaschinen
EP0717139A1 (de) * 1994-12-13 1996-06-19 ELECTROLUX ZANUSSI ELETTRODOMESTICI S.p.A. Vorrichtungen zum Bestimmen der Wäscheart in Waschmaschinen
EP0835955A2 (de) * 1996-10-10 1998-04-15 Miele & Cie. GmbH & Co. Programmgesteuerte Waschmaschine
EP1561851A1 (de) * 2002-09-24 2005-08-10 Kabushiki Kaisha Sanyo Denki Seisakusho Waschmaschine
EP1605087A1 (de) * 2003-03-06 2005-12-14 Kabushiki Kaisha Toshiba Trommelwaschmaschine
WO2007049242A1 (en) * 2005-10-28 2007-05-03 Arcelik Anonim Sirketi A washer/dryer
EP2056078A2 (de) * 2007-10-30 2009-05-06 General Electric Company Lastenmessvorrichtung und -verfahren
US8176798B2 (en) 2009-07-09 2012-05-15 Whirlpool Corporation Method and apparatus for determining laundry load
US20130185872A1 (en) * 2012-01-19 2013-07-25 Whirlpool Corporation Method to determine fabric type in a laundry treating appliance using motor current signature during agitation
US20140096327A1 (en) * 2012-10-09 2014-04-10 Lg Electronics Inc. Laundry treatment machine and method of operating the same
US9243987B2 (en) 2013-05-01 2016-01-26 Whirlpool Corporation Method of determining fabric type of a laundry load in a laundry treating appliance
CN110387673A (zh) * 2018-04-20 2019-10-29 宁波吉德家电科技有限公司 一种洗涤剂的自动投放方法及洗衣机

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2577949B1 (fr) * 1985-02-28 1988-02-12 Esswein Sa Machine a laver et a essorer a duree d'essorage variable
FR2601389B1 (fr) * 1986-07-10 1988-10-07 Ciabem Dispositif de commande pour lave-linge ou seche-linge a detection automatique de la charge de linge.
DE102009001112A1 (de) * 2009-02-24 2010-08-26 BSH Bosch und Siemens Hausgeräte GmbH Verfahren zum Überwachen einer Beladung einer Wäschetrommel und/oder eines Trocknungsgrades von Wäschestücken und entsprechende Schaltungsanordnung

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GB971842A (en) * 1961-12-30 1964-10-07 Constructa Werke Gmbh Improvements relating to automatically operated washing and spin-drying machines
FR1490821A (fr) * 1964-01-15 1967-08-04 Dole Valve Co Système de commande du niveau d'un liquide
US3435680A (en) * 1965-04-03 1969-04-01 Walter Holzer Method of sensing levels in containers holding liquids
US3707857A (en) * 1971-09-20 1973-01-02 Whirlpool Co Multi-purpose sensor assembly for automatic washer
DE2920492A1 (de) * 1978-06-12 1979-12-20 Schwarzenberg Waschgeraete Verfahren und einrichtung zur steuerung des waschprozesses in haushaltwaschgeraeten
US4235085A (en) * 1978-04-04 1980-11-25 Tokyo Shibaura Denki Kabushiki Kaisha Automatic washer
FR2457921A1 (fr) * 1979-05-30 1980-12-26 Licentia Gmbh Dispositif de commande pour machines a laver
FR2474547A1 (fr) * 1980-01-26 1981-07-31 Miele & Cie Procede et dispositif permettant de commander le programme d'un lave-linge, dont l'alimentation en eau est fonction de son niveau
US4303406A (en) * 1980-03-14 1981-12-01 The Maytag Company Automatic liquid level control
EP0042190A1 (de) * 1980-06-13 1981-12-23 Laboratoires D'electronique Et De Physique Appliquee L.E.P. Verfahren zum Ermitteln der mittleren Art des wesentlichen Materials der in einer Waschmaschine eingebrachten Wäsche und Waschmaschine zur Durchführung dieses Verfahrens
DE3030491A1 (de) * 1980-08-12 1982-02-25 Bosch-Siemens Hausgeräte GmbH, 7000 Stuttgart Verfahren zum bemessen der automatisch zulaufenden wassermenge und trommelwaschmaschine zur durchfuehrung des verfahrens
EP0056437A2 (de) * 1981-01-19 1982-07-28 Siemens Aktiengesellschaft Verfahren und Anordnung zur Belastungsermittlung von durch einen Elektromotor angetriebenen Geräten
EP0110999A1 (de) * 1982-05-10 1984-06-20 Matsushita Electric Industrial Co., Ltd. Waschmaschine
FR2550558A1 (fr) * 1983-08-13 1985-02-15 Licentia Gmbh Procede de commande et/ou de reglage d'une machine a laver
EP0143685A1 (de) * 1983-10-25 1985-06-05 Esswein S.A. Verfahren zum Ermitteln der Wäschemenge in einer drehenden Trommel und Waschmaschine und/oder Wäschetrockner zur Durchführung dieses Verfahrens

Patent Citations (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB971842A (en) * 1961-12-30 1964-10-07 Constructa Werke Gmbh Improvements relating to automatically operated washing and spin-drying machines
FR1490821A (fr) * 1964-01-15 1967-08-04 Dole Valve Co Système de commande du niveau d'un liquide
US3435680A (en) * 1965-04-03 1969-04-01 Walter Holzer Method of sensing levels in containers holding liquids
US3707857A (en) * 1971-09-20 1973-01-02 Whirlpool Co Multi-purpose sensor assembly for automatic washer
US4235085A (en) * 1978-04-04 1980-11-25 Tokyo Shibaura Denki Kabushiki Kaisha Automatic washer
DE2920492A1 (de) * 1978-06-12 1979-12-20 Schwarzenberg Waschgeraete Verfahren und einrichtung zur steuerung des waschprozesses in haushaltwaschgeraeten
FR2457921A1 (fr) * 1979-05-30 1980-12-26 Licentia Gmbh Dispositif de commande pour machines a laver
FR2474547A1 (fr) * 1980-01-26 1981-07-31 Miele & Cie Procede et dispositif permettant de commander le programme d'un lave-linge, dont l'alimentation en eau est fonction de son niveau
US4303406A (en) * 1980-03-14 1981-12-01 The Maytag Company Automatic liquid level control
EP0042190A1 (de) * 1980-06-13 1981-12-23 Laboratoires D'electronique Et De Physique Appliquee L.E.P. Verfahren zum Ermitteln der mittleren Art des wesentlichen Materials der in einer Waschmaschine eingebrachten Wäsche und Waschmaschine zur Durchführung dieses Verfahrens
DE3030491A1 (de) * 1980-08-12 1982-02-25 Bosch-Siemens Hausgeräte GmbH, 7000 Stuttgart Verfahren zum bemessen der automatisch zulaufenden wassermenge und trommelwaschmaschine zur durchfuehrung des verfahrens
EP0056437A2 (de) * 1981-01-19 1982-07-28 Siemens Aktiengesellschaft Verfahren und Anordnung zur Belastungsermittlung von durch einen Elektromotor angetriebenen Geräten
EP0110999A1 (de) * 1982-05-10 1984-06-20 Matsushita Electric Industrial Co., Ltd. Waschmaschine
FR2550558A1 (fr) * 1983-08-13 1985-02-15 Licentia Gmbh Procede de commande et/ou de reglage d'une machine a laver
EP0143685A1 (de) * 1983-10-25 1985-06-05 Esswein S.A. Verfahren zum Ermitteln der Wäschemenge in einer drehenden Trommel und Waschmaschine und/oder Wäschetrockner zur Durchführung dieses Verfahrens

Cited By (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2202332A (en) * 1987-03-14 1988-09-21 Toshiba Kk Washing weight detection and washing operation control system
GB2202332B (en) * 1987-03-14 1991-01-16 Toshiba Kk Washing weight detection and washing operation control system
EP0345120A1 (de) * 1988-05-31 1989-12-06 Ciapem Waschmaschine oder Trockner mit automatischer Messung des Gewichts der Wäsche
FR2636354A2 (fr) * 1988-05-31 1990-03-16 Ciapem Perfectionnements a un lave-linge ou seche-linge a determination automatique de la charge de linge introduite dans la machine
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Also Published As

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ATE84332T1 (de) 1993-01-15
EP0159202B1 (de) 1993-01-07
FR2559796B1 (fr) 1986-11-21
FR2559796A1 (fr) 1985-08-23

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