EP0223649A1 - Washing machine with a thermostat for controlling the water temperature - Google Patents

Washing machine with a thermostat for controlling the water temperature Download PDF

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Publication number
EP0223649A1
EP0223649A1 EP86402239A EP86402239A EP0223649A1 EP 0223649 A1 EP0223649 A1 EP 0223649A1 EP 86402239 A EP86402239 A EP 86402239A EP 86402239 A EP86402239 A EP 86402239A EP 0223649 A1 EP0223649 A1 EP 0223649A1
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EP
European Patent Office
Prior art keywords
switch
washing machine
micromotor
temperature
machine according
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Granted
Application number
EP86402239A
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German (de)
French (fr)
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EP0223649B2 (en
EP0223649B1 (en
Inventor
Bernard Delhomme
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Compagnie Industrielle dAppareils Menagers SA CIAPEM
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Compagnie Industrielle dAppareils Menagers SA CIAPEM
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Application filed by Compagnie Industrielle dAppareils Menagers SA CIAPEM filed Critical Compagnie Industrielle dAppareils Menagers SA CIAPEM
Priority to AT86402239T priority Critical patent/ATE43373T1/en
Publication of EP0223649A1 publication Critical patent/EP0223649A1/en
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Publication of EP0223649B1 publication Critical patent/EP0223649B1/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
    • D06F34/00—Details of control systems for washing machines, washer-dryers or laundry dryers
    • D06F34/14—Arrangements for detecting or measuring specific parameters
    • D06F34/22—Condition of the washing liquid, e.g. turbidity
    • D06F34/24—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
    • D06F39/00—Details of washing machines not specific to a single type of machines covered by groups D06F9/00 - D06F27/00 
    • D06F39/04—Heating arrangements
    • 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

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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)
  • Control Of Temperature (AREA)
  • Washing And Drying Of Tableware (AREA)

Abstract

1. A washing machine comprising an element (11) for heating the water supplied with energy as function of the condition that is to say open or closed, of a switch (21) of an electromechanical programmer comprising cams driven by an electrical micromotor (18), and means for the control of the temperature of the supply of the heating element (11), when a desired temperature is reached, characterized in that the micromotor (18) is in series with a static switch (14), whose conducting state depends on the output signal of a control circuit (10) receiving, on the one hand, the signal of a sensor (12) for the temperature of the water and, on the other hand, a signal for the set temperature and acting on the conducting state of the static switch in order to cause rotation of the micromotor in order to interrupt the supply to the heating element (11) when the set temperature is reached.

Description

L'invention est relative à un lave-linge.The invention relates to a washing machine.

Une machine de ce genre comporte habituellement un tambour perforé contenant le linge tournant à l'intérieur d'une cuve destinée à recevoir l'eau de lavage ou rinçage, ou l'eau expulsée du linge lors de l'essorage. Une résistance chauffante est disposée au fond de la cuve pour porter l'eau de lavage à une température choisie : 30°C, 40°C... 90°C, etc.A machine of this kind usually comprises a perforated drum containing the laundry rotating inside a tank intended to receive the washing or rinsing water, or the water expelled from the laundry during spinning. A heating resistor is placed at the bottom of the tank to bring the washing water to a chosen temperature: 30 ° C, 40 ° C ... 90 ° C, etc.

Un dispositif de commande assure le fonctionnement entiè­rement automatique du lave-linge. A cet effet ce dernier comprend un programmateur le plus souvent du type électromécanique, c'est-­à-dire comprenant un moteur électrique (appelé "micromoteur" pour ne pas le confondre avec le moteur d'entraînement du tambour) qui entraîne des cames agissant sur l'état d'interrupteurs ou contacts câblés avec les divers organes de la machine : électrovanne, moteur, micromoteur, pompe de vidange, résistance chauffante, etc. Un tel programmateur électromécanique peut être associé à un circuit de contrôle de la vitesse de rotation du moteur d'entraînement du tambour, notamment lors des essorages qui peuvent provoquer, du fait de la vitesse élevée de rotation du tambour, des vibrations dangereuses pour la machine. Un tel circuit agit par exemple sur un interrupteur commandé, de préférence à état solide tel qu'un triac, en série avec le moteur d'entraînement du tambour afin de contrôler la phase de conduction de cet interrupteur à chaque période du signal alternatif d'alimentation, la durée de conduction de l'inter­rupteur statique étant, à chaque période, fonction de la vitesse désirée.A control device ensures the fully automatic operation of the washing machine. For this purpose the latter includes a programmer most often of the electromechanical type, that is to say comprising an electric motor (called "micromotor" so as not to be confused with the drive motor of the drum) which drives cams acting on the state of switches or wired contacts with the various parts of the machine: solenoid valve, motor, micromotor, drain pump, heating resistor, etc. Such an electromechanical programmer can be associated with a circuit for controlling the speed of rotation of the drum drive motor, in particular during wringing which can cause, due to the high speed of rotation of the drum, vibrations dangerous for the machine. . Such a circuit acts for example on a controlled switch, preferably in solid state such as a triac, in series with the drum drive motor in order to control the conduction phase of this switch at each period of the alternating signal of power supply, the conduction time of the static switch being, in each period, a function of the desired speed.

Un interrupteur de contrôle de température est disposé géné­ralement en série avec la résistance de chauffage de l'eau ; celui-ci est ouvert quand la température désirée est atteinte. Un tel interrupteur de contrôle de température est jusqu'à présent soit un thermostat électromécanique à bulbe, soit un thermostat électro­ nique. Un thermostat électromécanique à bulbe constitue un ensem­ble mécanique d'une réalisation délicate, donc onéreuse. De plus, à un tel thermostat à bulbe on associe souvent un système de cames - ­faisant partie du programmateur électromécanique -à avance rapide pour passer à l'étape suivante du programme d'exécution de la machine dès que la température désirée est atteinte, ce qui compli­que encore la réalisation du programmateur.A temperature control switch is generally arranged in series with the water heating resistor; it is opened when the desired temperature is reached. Until now, such a temperature control switch is either an electromechanical bulb thermostat or an electro thermostat. fuck. An electromechanical bulb thermostat constitutes a mechanical assembly of a delicate and therefore expensive construction. In addition, such a bulb thermostat is often associated with a cam system - part of the electromechanical programmer - fast forward to go to the next step of the machine execution program as soon as the desired temperature is reached, this which further complicates the production of the programmer.

Un thermostat dit électronique comporte un détecteur à thermistance ou analogue, un interrupteur ou relais de puissance en série avec la résistance chauffante, et un circuit interface pour commander cet interrupteur ou relais en fonction du signal fourni par la thermistance ou analogue. Un tel ensemble est d'un prix élevé.A so-called electronic thermostat comprises a thermistor or similar detector, a power switch or relay in series with the heating resistor, and an interface circuit for controlling this switch or relay as a function of the signal supplied by the thermistor or the like. Such a set is of a high price.

L'invention remédie aux inconvénients mentionnés ci-dessus.The invention overcomes the drawbacks mentioned above.

Le lave-linge selon l'invention comporte un élément de chauf­fage de l'eau alimenté en énergie en fonction de l'état, ouvert ou fermé d'un interrupteur d'un programmateur électromécanique com­prenant des cames entrainées par un micromoteur électrique et des moyens de contrôle de la température pour interrompre l'alimen­tation de l'élément chauffant quand une température désirée est atteinte. Il est caractérisé en ce que le micromoteur est en série avec un interrupteur statique dont l'état de conduction dépend du signal de sortie d'un circuit de commande, tel qu'un micropro­cesseur, recevant, d'une part, un signal d'un capteur de la tempé­rature de l'eau, et d'autre part, un signal de consigne de température et agissant sur la conduction de l'interrupteur statique pour faire tourner le micromoteur afin d'interrompre l'alimentation de l'élé­ment chauffant quand est atteinte la température de consigne.The washing machine according to the invention comprises a water heating element supplied with energy depending on the state, open or closed of a switch of an electromechanical programmer comprising cams driven by an electric micromotor and means temperature control to interrupt the supply to the heating element when a desired temperature is reached. It is characterized in that the micromotor is in series with a static switch whose conduction state depends on the output signal from a control circuit, such as a microprocessor, receiving, on the one hand, a signal from a water temperature sensor, and on the other hand, a temperature setpoint signal and acting on the conduction of the static switch to rotate the micromotor in order to interrupt the supply of the heating element when the set temperature is reached.

Le circuit de commande contrôle ainsi le micromoteur et n'agit pas directement sur le circuit de puissance (la résistance de chauffage de l'eau), ce qui permet une réalisation relativement peu onéreuse, sans relais de puissance.The control circuit thus controls the micromotor and does not act directly on the power circuit (the water heating resistance), which allows a relatively inexpensive embodiment, without power relay.

Par ailleurs la présence du microprocesseur ne complique pas la réalisation de la machine car ce microprocesseur peut être également utilisé pour commander ou contrôler la vitesse de rota­tion du moteur d'entraînement du tambour.Furthermore, the presence of the microprocessor does not complicate the production of the machine because this microprocessor can be also used to control or control the rotation speed of the drum drive motor.

Enfin le programmateur électromécanique ne comporte pas de came à avance rapide.Finally, the electromechanical programmer does not have a fast-forward cam.

D'autres caractéristiques et avantages de l'invention apparaî­tront avec la description de certains de ses modes de réalisation, celle-ci étant effectuée en se référant au dessin annexé sur lequel la figure unique représente un programmateur de lave-linge conforme à l'invention.Other characteristics and advantages of the invention will appear with the description of some of its embodiments, this being carried out with reference to the appended drawing in which the single figure represents a washing machine programmer in accordance with the invention .

Dans cet exemple le tambour (non montré) est entraîné en rotation par un moteur électrique (également non montré) du type universel en série avec un triac (non représenté) dont la conduction dépend d'un signal de sortie d'un microprocesseur 10, ce qui permet de contrôler la vitesse de rotation de ce moteur.In this example, the drum (not shown) is rotated by an electric motor (also not shown) of the universal type in series with a triac (not shown), the conduction of which depends on an output signal from a microprocessor 10, which allows to control the rotation speed of this motor.

On met à profit la présence du microprocesseur de contrôle de la vitesse du moteur d'entraînement du tambour pour commander, de façon simple, l'alimentation de la résistance 11 de chauffage de l'eau dans la cuve du lave-linge.The presence of the microprocessor for controlling the speed of the drum drive motor is used to control, in a simple manner, the supply of the resistor 11 for heating the water in the tank of the washing machine.

A cet effet le microprocesseur 10 comporte des entrées 10₁ et 10₂ pour l'introduction du signal d'un capteur de température 12 tel qu'une thermistance, et des entrées 10₃ et 10₄ recevant le signal fourni par un moyen de consigne de température 13 tel qu'un potentiomètre.To this end, the microprocessor 10 has inputs 10₁ and 10₂ for the introduction of the signal from a temperature sensor 12 such as a thermistor, and inputs 10₃ and 10₄ receiving the signal supplied by a temperature reference means 13 such than a potentiometer.

Une sortie 10₅ du microprocesseur 10 est reliée à la gâchette 15 d'un triac 14 dont une borne est reliée directement à une première borne 16 sur laquelle est appliqué le signal d'alimentation en courant alternatif et dont l'autre borne est connectée à une extrémité 17₁ d'un interrupteur 17 dont la seconde extrémité 17₂ est reliée à une première borne 18₁ d'un micromoteur 18 d'entraî­nement des cames (non représentées) d'un programmateur électro­mécanique. La seconde borne 18₂ du micromoteur 18 est reliée à la seconde borne 19 d'alimentation en courant alternatif.An output 10₅ of the microprocessor 10 is connected to the trigger 15 of a triac 14, one terminal of which is connected directly to a first terminal 16 on which the AC power supply signal is applied and the other terminal of which is connected to a 17₁ end of a switch 17, the second end 17₂ of which is connected to a first terminal 18₁ of a micromotor 18 for driving the cams (not shown) of an electromechanical programmer. The second terminal 18₂ of the micromotor 18 is connected to the second terminal 19 for supplying alternating current.

La borne 18₁ du micromoteur 18 ainsi que la borne 17₂ de l'interrupteur 17 sont connectées à une borne 20₁ d'un interrupteur 20 qui comme, l'interrupteur 17, fait partie du programmateur électromécanique. La seconde borne 20₂ de l'interrupteur 20 est reliée directement à la borne 16 d'alimentation. La position des interrupteurs 17 et 20 dépend de la position de cames entraînées par le micromoteur 18.Terminal 18₁ of micromotor 18 and terminal 17₂ of switch 17 are connected to terminal 20₁ of a switch 20 which, like switch 17, is part of the electromechanical programmer. The second terminal 20₂ of the switch 20 is directly connected to the supply terminal 16. The position of the switches 17 and 20 depends on the position of the cams driven by the micromotor 18.

La résistance 11 de chauffage de l'eau est, par ailleurs, en série avec un autre interrupteur 21 du programmateur électromé­canique ainsi qu'avec un pressostat 22 qui est un interrupteur fermé seulement lorsque le niveau de l'eau dans la cuve dépasse une hauteur prédéterminée. L'ensemble en série de la résistance 11 et des interrupteurs 21 et 22 est disposé entre les bornes 16 et 19.The resistor 11 for heating the water is, moreover, in series with another switch 21 of the electromechanical programmer as well as with a pressure switch 22 which is a switch closed only when the level of water in the tank exceeds a height predetermined. The series assembly of the resistor 11 and of the switches 21 and 22 is disposed between the terminals 16 and 19.

Le fonctionnement est le suivant :The operation is as follows:

Lors d'une phase de lavage proprement dit et quand le niveau de l'eau dans la cuve est suffisant les interrupteurs 21 et 22 sont fermés ce qui met sous tension la résistance 11 de chauffage de l'eau. A ce moment l'interrupteur 17 est fermé et l'interrupteur 20 est ouvert. Le triac 14 reste bloqué tant que la température de l'eau n'a pas atteint la valeur de consigne fixée par le potentiomètre 13. Le microprocesseur 10 compare les signaux fournis par la thermis­tance 12 et par le potentiomètre 13 et quand ces signaux sont égaux un signal est délivré sur la sortie 10₅ pour rendre le triac 14 conducteur afin de mettre sous tension le micromoteur 18. Autre­ment dit, pendant les périodes de chauffage de l'eau le micromoteur 18 est à l'arrêt tant que le triac 14 est bloqué ; il en résulte que les interrupteurs 17, 20 et 21 restent dans la position indiquée ci-­dessus : l'interrupteur 17 est fermé, l'interrupteur 20 est ouvert et l'interrupteur 21 est fermé. Quand le triac 14 est conducteur, c'est-­à-dire quand la température de l'eau est celle désirée, le micro­moteur 18 tourne pour entraîner la (les) came(s) qui permet(tent) d'ouvrir l'interrupteur 21, d'ouvrir l'interrupteur 17 et de fermer l'interrupteur 20. Ainsi, quand l'eau est à la température désirée, le micromoteur 18 est alimenté en permanence par l'intermédiaire de l'interrupteur 20 et l'état du triac 14 est sans effet sur l'alimen­tation de ce micromoteur.During a washing phase proper and when the water level in the tank is sufficient, the switches 21 and 22 are closed, which puts the water heating resistor 11 under tension. At this time the switch 17 is closed and the switch 20 is open. The triac 14 remains blocked as long as the water temperature has not reached the set value set by the potentiometer 13. The microprocessor 10 compares the signals supplied by the thermistor 12 and by the potentiometer 13 and when these signals are equal a signal is delivered on the output 10₅ to make the triac 14 conductive in order to energize the micromotor 18. In other words, during periods of water heating the micromotor 18 is stopped as long as the triac 14 is blocked ; it follows that the switches 17, 20 and 21 remain in the position indicated above: the switch 17 is closed, the switch 20 is open and the switch 21 is closed. When the triac 14 is conductive, that is to say when the water temperature is the desired one, the micromotor 18 rotates to drive the cam (s) which allow (tent) to open the switch 21, to open the switch 17 and to close the switch 20. Thus, when the water is at the desired temperature, the micromotor 18 is continuously supplied by means of the switch 20 and the state of the triac 14 has no effect on the power supply of this micromotor.

En variante, à la place d'un potentiomètre 13 on prévoit un codeur ou sélecteur ou interrupteur à n positions, n étant le nombre de températures de consigne que l'on désire pouvoir choisir.As a variant, instead of a potentiometer 13, an encoder or selector or switch with n positions is provided, n being the number of setpoint temperatures that it is desired to be able to choose.

Par ailleurs, il est bien entendu que le terme "thermistance" englobe tout type de capteur de température.Furthermore, it is understood that the term "thermistor" encompasses any type of temperature sensor.

Claims (7)

1. Lave-linge comportant un élément (11) de chauffage de l'eau alimenté en énergie en fonction de l'état, ouvert ou fermé, d'un interrupteur (21) d'un programmateur électromécanique comprenant des cames entraînées par un micromoteur électrique (18), et des moyens de contrôle de la température pour interrompre l'alimen­tation de l'élément chauffant (11) quand une température désirée est atteinte, caractérisé en ce que le micromoteur (18) est en série avec un interrupteur statique (14) dont l'état de conduction dépend du signal de sortie d'un circuit de commande (10) recevant, d'une part, un signal d'un capteur (12) de la température de l'eau et, d'autre part, un signal de consigne de température et agissant sur la conduction de l'interrupteur statique pour faire tourner le micro­moteur afin d'interrompre l'alimentation de l'élément chauffant (11) quand est atteinte la température de consigne.1. Washing machine comprising an element (11) for heating water supplied with energy depending on the state, open or closed, of a switch (21) of an electromechanical programmer comprising cams driven by a micromotor electric (18), and temperature control means for interrupting the supply of the heating element (11) when a desired temperature is reached, characterized in that the micromotor (18) is in series with a static switch ( 14) whose conduction state depends on the output signal from a control circuit (10) receiving, on the one hand, a signal from a sensor (12) of the water temperature and, on the other hand part, a temperature setpoint signal and acting on the conduction of the static switch to rotate the micromotor in order to interrupt the supply of the heating element (11) when the setpoint temperature is reached. 2. Lave-linge selon la revendication 1, caractérisé en ce qu'un commutateur (17, 20) du programmateur électromécanique est prévu pour que, lors des périodes de chauffage de l'eau, le micromoteur (18) soit alimenté par l'intermédiaire de l'interrupteur statique (14) et, en dehors de ces périodes, l'état de conduction de cet inter­rupteur statique (14) soit sans effet sur l'alimentation dudit micro­moteur (18).2. Washing machine according to claim 1, characterized in that a switch (17, 20) of the electromechanical programmer is provided so that, during periods of water heating, the micromotor (18) is powered by the intermediate of the static switch (14) and, outside these periods, the conduction state of this static switch (14) has no effect on the supply of said micromotor (18). 3. Lave-linge selon la revendication 1 ou 3, caractérisé en ce que le circuit de commande (10) est un microprocesseur.3. Washing machine according to claim 1 or 3, characterized in that the control circuit (10) is a microprocessor. 4. Lave-linge selon la revendication 3, caractérisé en ce que le microprocesseur (10) commande également la vitesse de rotation du moteur d'entrainement du tambour.4. Washing machine according to claim 3, characterized in that the microprocessor (10) also controls the speed of rotation of the drum drive motor. 5. Lave-linge selon l'une quelconque des revendications précé­dentes, caractérisé en ce que le signal de consigne de température de l'eau est introduit dans le circuit de commande par un poten­tiomètre (13).5. Washing machine according to any one of the preceding claims, characterized in that the water temperature setpoint signal is introduced into the control circuit by a potentiometer (13). 6. Lave-linge selon l'une quelconque des revendications 1 à 4, caractérisé en ce que le signal de consigne de température de l'eau est introduit dans le circuit de commande (10) par un codeur, ou un interrupteur ou un sélecteur à n positions, ou analogue.6. Washing machine according to any one of claims 1 to 4, characterized in that the water temperature setpoint signal is introduced into the control circuit (10) by an encoder, or an n-position switch or selector, or the like. 7. Lave-linge selon l'une quelconque des revendications précé­dentes, caractérisé en ce que le capteur de température est constitué par une thermistance.7. Washing machine according to any one of the preceding claims, characterized in that the temperature sensor is constituted by a thermistor.
EP86402239A 1985-10-11 1986-10-09 Washing machine with a thermostat for controlling the water temperature Expired - Lifetime EP0223649B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT86402239T ATE43373T1 (en) 1985-10-11 1986-10-09 WASHING MACHINE WITH THERMOSTAT FOR WATER TEMPERATURE CONTROL.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8515112 1985-10-11
FR8515112A FR2588580B1 (en) 1985-10-11 1985-10-11 WASHING MACHINE WITH WATER TEMPERATURE CONTROL THERMOSTAT

Publications (3)

Publication Number Publication Date
EP0223649A1 true EP0223649A1 (en) 1987-05-27
EP0223649B1 EP0223649B1 (en) 1989-05-24
EP0223649B2 EP0223649B2 (en) 1992-10-14

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP86402239A Expired - Lifetime EP0223649B2 (en) 1985-10-11 1986-10-09 Washing machine with a thermostat for controlling the water temperature

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EP (1) EP0223649B2 (en)
AT (1) ATE43373T1 (en)
DE (1) DE3663545D1 (en)
FR (1) FR2588580B1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2364278T3 (en) 2006-06-13 2011-08-30 Electrolux Home Products Corporation N.V. CIRCUIT PROVISION FOR AN APPLIANCES.

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1179790A (en) * 1956-09-08 1959-05-28 Pfenningsberg Gmbh Maschfab Method and device for maintaining the temperature of water in automatic washing machines
FR1277592A (en) * 1960-01-15 1961-12-01 English Electric Co Ltd Electric washing machine
DE1191329B (en) * 1963-03-02 1965-04-22 Constructa Werke G M B H Measuring and switching device for washing machines to be operated with boiling liquor
FR1473560A (en) * 1965-01-02 1967-03-17 Scharpf Gebr Kg Maschinenfabrik Temperature control device
FR1555955A (en) * 1967-01-31 1969-01-31
FR2103374A5 (en) * 1970-09-07 1972-04-07 Siemens Elektrogeraete Gmbh
DE2923007A1 (en) * 1979-06-07 1980-12-18 Miele & Cie Automatic washing machine control - preceding temp. step by specified time steps
DE3324482A1 (en) * 1983-07-07 1985-01-24 Miele & Cie GmbH & Co, 4830 Gütersloh Microcomputer-controlled programme controller for domestic appliances

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1179790A (en) * 1956-09-08 1959-05-28 Pfenningsberg Gmbh Maschfab Method and device for maintaining the temperature of water in automatic washing machines
FR1277592A (en) * 1960-01-15 1961-12-01 English Electric Co Ltd Electric washing machine
DE1191329B (en) * 1963-03-02 1965-04-22 Constructa Werke G M B H Measuring and switching device for washing machines to be operated with boiling liquor
FR1473560A (en) * 1965-01-02 1967-03-17 Scharpf Gebr Kg Maschinenfabrik Temperature control device
FR1555955A (en) * 1967-01-31 1969-01-31
FR2103374A5 (en) * 1970-09-07 1972-04-07 Siemens Elektrogeraete Gmbh
DE2923007A1 (en) * 1979-06-07 1980-12-18 Miele & Cie Automatic washing machine control - preceding temp. step by specified time steps
DE3324482A1 (en) * 1983-07-07 1985-01-24 Miele & Cie GmbH & Co, 4830 Gütersloh Microcomputer-controlled programme controller for domestic appliances

Also Published As

Publication number Publication date
EP0223649B2 (en) 1992-10-14
EP0223649B1 (en) 1989-05-24
FR2588580A1 (en) 1987-04-17
FR2588580B1 (en) 1988-04-08
ATE43373T1 (en) 1989-06-15
DE3663545D1 (en) 1989-06-29

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