EP0252817B1 - Control apparatus for a washing machine or a laundry dryer using automatic detection of the weight of laundry - Google Patents

Control apparatus for a washing machine or a laundry dryer using automatic detection of the weight of laundry Download PDF

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Publication number
EP0252817B1
EP0252817B1 EP87401542A EP87401542A EP0252817B1 EP 0252817 B1 EP0252817 B1 EP 0252817B1 EP 87401542 A EP87401542 A EP 87401542A EP 87401542 A EP87401542 A EP 87401542A EP 0252817 B1 EP0252817 B1 EP 0252817B1
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EP
European Patent Office
Prior art keywords
washing
washing machine
machine
automatic detection
laundry
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.)
Expired - Lifetime
Application number
EP87401542A
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German (de)
French (fr)
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EP0252817A1 (en
Inventor
Patrice Heyde
Christian Burgel
Bernard Delhomme
Martine Gonon
Jean Bargel
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.)
Compagnie Industrielle dAppareils Menagers SA CIAPEM
Original Assignee
Compagnie Industrielle dAppareils Menagers SA CIAPEM
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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
    • 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
    • D06F33/36—Control of operational steps, e.g. optimisation or improvement of operational steps depending on the condition of the laundry of washing
    • 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
    • D06F58/00—Domestic laundry dryers
    • D06F58/32—Control of operations performed in domestic laundry dryers 
    • D06F58/34—Control of operations performed in domestic laundry dryers  characterised by the purpose or target of the control
    • D06F58/36—Control of operational steps, e.g. for optimisation or improvement of operational steps depending on the condition of the laundry
    • 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
    • D06F2101/00—User input for the control of domestic laundry washing machines, washer-dryers or laundry dryers
    • D06F2101/14—Time settings
    • 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
    • D06F34/00—Details of control systems for washing machines, washer-dryers or laundry dryers
    • D06F34/10—Power supply arrangements, e.g. stand-by circuits

Definitions

  • the invention relates to a washing machine or dryer comprising means for detecting the load of laundry introduced into the drum.
  • the pieces of laundry are introduced into a perforated drum, placed inside a tank in which the washing or rinsing water is located, and rotating around an axis usually horizontal.
  • the mixing of the laundry is obtained by providing protrusions of the cylindrical inner surface of the drum.
  • the washing execution parameters in particular the quantity of water and the duration of each operation, are generally provided for the maximum load of laundry that the drum can receive. Thus when only a fraction of the maximum load is introduced into the machine, the quantity of water and the duration of the washing are considered to be too great. We therefore tried to adapt the washing program to the weight of laundry.
  • the load of laundry is determined automatically, without the user having to intervene, and the washing parameters are automatically adapted to the load.
  • a washing machine is described, for example, in French patent n ° 8316997 in the name of the company Esswein (EP-A-0143685).
  • the invention overcomes these drawbacks.
  • It is characterized in that it comprises a means for automatically detecting the load of laundry acting on the operating parameters of the washing machine (or washing parameters) to adapt them to the load, and a member that can be actuated by the user. to deactivate this means and vary the washing parameters at will in order to either improve the washing efficiency, or to save water, energy or time.
  • the user actuable member can act on the washing program in the same way as the automatically determined load signal; in this case the member is analogous to that of a machine in which the load is displayed at will by the user. But this organ is then used for a different purpose. For example, if a high washing efficiency is desired, the display member is adjusted so that it corresponds to a large quantity of laundry, even if the laundry load is low. Conversely, if it is desired to save time and / or make savings, even if the load of laundry is large, the display member will be positioned in such a way that it corresponds to small quantities of laundry.
  • the washing machine includes means for automatically detecting the type of laundry introduced into the machine, for example that described in French patent 8402437 (EP-A-0159202), and the adaptation of the washing program is performed automatically according to the value of this quantity.
  • the adjustment member makes it possible either to increase the efficiency of the washing or to save money or save time.
  • the invention also applies to a dryer comprising means for automatically detecting a quantity linked to the laundry, such as the load, acting on the drying parameters, which is characterized in that it comprises a member adjustable by the user to deactivate the size detection means and which makes it possible to modify the parameters (of washing or) of drying.
  • the size linked to the laundry may in this case the load of laundry, the nature of the laundry and the degree of humidity.
  • the drying parameters controlled by the user-actuable member may be the operating time of the dryer and the energy supplied to this dryer.
  • the washing machine programmer which will be described in relation to the figures comprises, on the one hand, an electro-mechanical component and on the other hand an electronic component with microprocessor 12.
  • the electromechanical component is formed by an electric motor 10 driving one or more cams (not shown) acting on the state - open or closed - of switches 13 i , 13 2 and 13g.
  • the motor 10 is in series with a triac 11, the trigger of which is connected to an output 12, of the microprocessor 12. This triac is in parallel with a switch 25 of the electromechanical component.
  • the states of the switches 13 1 , 13 2 and 13 3 represent, at each instant, the state of progress of the washing program. In other words, according to their state, the switches make it possible to know whether the washing machine is in the prewash, washing, rinsing or spinning period.
  • the signals representing these switch states are applied to a common input 14 of the microprocessor 12 which controls, via interface circuits (not shown), the supply of the drive motor of the washing machine drum and its direction. the duration of each phase of the program to be executed.
  • the microprocessor 12 controls, thanks to the triac 11 and to the switch 25, the rotation of the micromotor 10 to pass from one phase of the program to another.
  • Some of the electromechanical programmer switches control - in a conventional way - directly other parts of the washing machine such as the water heating resistor, the drain pump and the solenoid valves.
  • the microprocessor In addition to the output 12, connected to the trigger of the triac 11, the microprocessor has an output 12 2 for controlling the drum drive motor and an input 12 6 connected, by the switch of an interface circuit 28, to the terminal. 27 common to triac 11, switch 25 and motor 10.
  • the triac 11 is used to trigger the passage from one stage of the washing program to another and this triac 11 is cut when it has been observed that the step change operation has started.
  • the microprocessor 12 monitors, through the input 12 6 , the conduction state of the switch 25 and, as soon as it has detected that this switch is closed, the triac 11 is open.
  • the microprocessor 12 controls the conduction of the triac 11 the motor 10 begins to rotate.
  • this triac 11 is opened periodically, for example for one alternation in ten of the alternating signal from the supply network and, during this time, the microprocessor uses the data entered its input 12 6 to determine whether the switch 25 is open or closed. If this switch 25 is open, terminal 27 is in the air and circuit 28 transmits a binary signal, which is for example "0", on input 12 6 . Under these conditions, after this alternation, the triac 11 is again closed and the reading is still carried out periodically in the manner described. When the switch 25 is closed the circuit transmits a signal "1" on the input 12 6 . In this case, after detection of this signal, the triac 11 is open.
  • a terminal of each switch 13 is connected to a terminal 16 of the alternating current supply or mains supply.
  • the other terminal of each switch is connected to a common terminal 16 'via a resistor, respectively 17 1 , 17 2 and 17 3 .
  • Terminal 16 ' is connected to the base of an NPN transistor 20 via a resistor 19. Furthermore, terminal 16' is connected to ground through a resistor 21.
  • the emitter of transistor 20 is grounded while its collector is connected to input 14 of microprocessor 12 and to a terminal 22, brought to a reference potential, via a resistor 23.
  • the conduction time of the transistor 20 depends on the amplitude of the alternating signal applied to its base 20. This property appears clearly in FIGS. 2a and 2b on which we have plotted the abscissa. time t and on the ordinate the potential on the base of transistor 20 (for FIG. 2a) and the potential of collector 20 (for FIG. 2 b ).
  • the transistor 20 is conductive when the potential of its base exceeds the threshold V BE . It can thus be seen that, for a first alternating signal 30 of greater amplitude than a second alternating signal 31, the duration t 1 of conduction is greater than the duration t 2 for the second signal.
  • the microprocessor 12 is programmed to convert the times t 1 and t 2 into binary numbers.
  • the values of the resistors 17 i , 17 2 , and 173 are sufficiently distinct so that all the possible combinations of states (open or closed) of the switches 13 1 , 13 2 , and 13 3 correspond to signals of different values on the entry 14.
  • the microprocessor 12 has an input 12 3 connected: to an armature of a capacitor 40, to the first resistance terminals 41 and 42, and to the first end terminal 43, of a potentiometer 43.
  • the second armature of the capacitor 40 is connected to a terminal 44 1 to which a potential C cc of predetermined value is applied.
  • the resistor 41 constitutes a reference resistor of value R. known with precision, for example of the order of ⁇ 1%, and its second terminal is connected to an output 12 7 of the microprocessor 12.
  • the resistor 42 constitutes a thermistor for measuring the temperature of the water in the tank of the washing machine. Its second terminal is connected to an output 12 8 of the microprocessor.
  • the socket 43 3 of the potentiometer 43 is connected to an output 12 9 of the microprocessor 12.
  • the second end terminal 43 2 of this potentiometer 43 is connected to an output 12 10 of the microprocessor by means of a switch 44 of the type limit switch.
  • the potentiometer 43 and the switch 44 are actuated by a cursor 45 (FIG. 3) which can be moved continuously between two end positions 46 and 47. In the position 46 of the cursor 45 the switch 44 is open, while in the other positions this switch 44 is closed.
  • the procedure is as follows: the capacitor 40 is d 'first discharged, for example by connecting terminals 44, and 12 3 of the same potential, that C cc which is permanently applied to terminal 44 1 . Then terminal 12 3 again constitutes a Entrance. Then the output 12 7 of the microprocessor is connected to ground (potential 0). On the other hand, the outputs 12 8 , 12 9 , 12 io are in the air. Under these conditions the capacitor 40 charges through the resistor 41. The signal on the input 12 3 is the potential V of the first armature of the capacitor 40 (FIG. 2 c ).
  • this potential has the value V cc then it decreases as represented by the curve 50 on the diagram of FIG. 2 c .
  • the microprocessor 12 is programmed to measure the time t, at the end of which this signal V on the input 12 3 reaches the value V o . This time t, is transformed into a binary number by the microprocessor 12.
  • the value V o constitutes the input threshold of the microprocessor.
  • the capacitor 40 is again discharged and the output 12 8 is connected to ground while the outputs 12 7 , 12 9 and 12 10 are in the air.
  • the capacitor 40 then charges through the resistor 42.
  • On the input 12 3 we obtain the curve 51 and the time t 2 is measured at the end of which the potential V on the input 12 3 reaches the value V o .
  • the microprocessor determines the R value of the resistor 42 according to the following formula:
  • the procedure is analogous: the capacitor 40 is discharged then the time t ' i for which the potential V on the input 12 3 reaches the potential V o when the capacitor 40 charges through the total resistance of the potentiometer 43, the switch 44 then being of course closed; then the time t ' 2 is determined so that the potential on the input 12 3 reaches the value V o when the capacitor 40 is charged by the resistance presented between the terminals 43, and 43 3 .
  • the position of the cursor 45 is represented by the number a:
  • the position of the cursor 45 is chosen by the user before the machine is started up. If, when start-up is commanded, the cursor 45 is in position 46, the microprocessor controls the operation of the washing machine according to a sequence described in French patent 8316997 (EP-A-0143685) to determine the load of laundry. , and the various subsequent stages of operation of the washing machine are adjusted to the value of the load thus measured.
  • the microprocessor is programmed in such a way that, when the cursor 45 is moved (rectilinearly in the example), in the direction of the arrow 32 (FIG. 3), towards position 47 the efficiency of the washing increases. In particular the time of each operation, the energy used during each of these operations, the amount of water and, possibly (if the washing machine has an automatic dosing device), detergent increases as and when 'we're getting closer to position 47.
  • the washing programs implemented in the first case (switch 44 open) and in the second case (switch 44 closed) are identical, that is to say that each position of the cursor 45 (outside of the end 46) corresponds to a load of laundry, from the lowest loads to the highest loads (in position 47).
  • the programs are not necessarily identical in the two cases.
  • the washing time is greater than the corresponding time for the maximum load when the cursor is in position 46.
  • the washing time is shorter than for the smallest load provided for in the program when the switch 44 is open. It is also possible, when the switch 44 is closed, to act on the energy supplied to the washing machine (drum rotation time, water heating power), on the quantity of water and on the quantity of detergent, so as to obtain more possibilities than in the case of automatic detection of the load and automatic adaptation of the washing parameters to the load signal.
  • Arrow 32 ( Figure 3) can be replaced by a scale with numbers or other indications representing the effectiveness of washing.
  • the arrow 33 may be materialized, parallel to the path of movement of the cursor 45, by a graduation with figures or other indications representing the saving or the saving of time.

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

Description

L'invention est relative à un lave-linge ou sèche-linge comportant un moyen de détection de la charge de linge introduite dans le tambour.The invention relates to a washing machine or dryer comprising means for detecting the load of laundry introduced into the drum.

Dans un lave-linge les pièces de linge sont introduites dans un tambour perforé, disposé à l'intérieur d'une cuve dans laquelle se trouve l'eau de lavage ou de rinçage, et tournant autour d'un axe habituellement horizontal. Le brassage du linge est obtenu en prévoyant des saillies de la surface intérieure cylindrique du tambour.In a washing machine, the pieces of laundry are introduced into a perforated drum, placed inside a tank in which the washing or rinsing water is located, and rotating around an axis usually horizontal. The mixing of the laundry is obtained by providing protrusions of the cylindrical inner surface of the drum.

Les paramètres d'exécution du lavage, notamment la quantité d'eau et la durée de chaque opération, sont généralement prévus pour la charge maximale de linge que peut recevoir le tambour. Ainsi quand on introduit dans la machine seulement une fraction de la charge maximale, la quantité d'eau et la durée du lavage sont considérées comme trop importantes. On a donc cherché à adapter le programme de lavage au poids de linge.The washing execution parameters, in particular the quantity of water and the duration of each operation, are generally provided for the maximum load of laundry that the drum can receive. Thus when only a fraction of the maximum load is introduced into the machine, the quantity of water and the duration of the washing are considered to be too great. We therefore tried to adapt the washing program to the weight of laundry.

Dans un premier type de machine la charge de linge est déterminée de façon automatique, sans que l'utilisateur ait à intervenir, et les paramètres du lavage s'adaptent automatiquement à la charge. Un tel lave-linge est décrit par exemple, dans le brevet français n° 8316997 au nom de la Société Esswein (EP-A-0143685).In a first type of machine, the load of laundry is determined automatically, without the user having to intervene, and the washing parameters are automatically adapted to the load. Such a washing machine is described, for example, in French patent n ° 8316997 in the name of the company Esswein (EP-A-0143685).

Dans d'autres machines (par exemple brevet français n° 8403800 au nom de la demanderesse EP-A-0 158 547) l'adaptation des paramètres de fonctionnement du lave-linge dépend de l'affichage, par l'utilisateur, d'un poids de linge introduit dans la machine.In other machines (for example French patent n ° 8403800 in the name of the applicant EP-A-0 158 547) the adaptation of the operating parameters of the washing machine depends on the display, by the user, of a weight of laundry introduced into the machine.

On a constaté que ces deux types de lave-linge présentaient des limitations qui pouvaient être gênantes pour l'utilisateur. Ainsi les performances d'un lave-linge à détermination automatique de la charge ne peuvent pas être modifiées par l'utilisateur; pour un lave-linge dans lequel l'utilisateur affiche la charge celui-ci doit apprécier le poids de linge, ce qui n'est pas toujours aisé.It has been found that these two types of washing machine have limitations which could be inconvenient for the user. Thus the performance of a washing machine with automatic load determination cannot be modified by the user; for a washing machine in which the user displays the load, this must appreciate the weight of the laundry, which is not always easy.

L'invention remédie à ces inconvénients.The invention overcomes these drawbacks.

Elle est caractérisée en ce qu'elle comporte un moyen de détection automatique de la charge de linge agissant sur les paramètres de fonctionnement du lave-linge (ou paramètres du lavage) pour les adapter à la charge, et un organe actionnable par l'utilisateur pour mettre hors d'action ce moyen et faire varier à volonté les paramètres du lavage afin soit d'améliorer l'efficacité du lavage, soit de réaliser des économies en eau, en énergie ou en temps.It is characterized in that it comprises a means for automatically detecting the load of laundry acting on the operating parameters of the washing machine (or washing parameters) to adapt them to the load, and a member that can be actuated by the user. to deactivate this means and vary the washing parameters at will in order to either improve the washing efficiency, or to save water, energy or time.

L'organe actionnable par l'utilisateur peut agir sur le programme de lavage de la même manière que le signal de charge déterminé automatiquement; dans ce cas l'organe est analogue à celui d'une machine dans laquelle la charge est affichée à volonté par l'utilisateur. Mais cet organe est alors utilisé dans un but différent. Par exemple si on désire une grande efficacité du lavage, l'organe d'affichage est réglé de façon telle qu'il corresponde à une grande quantité de linge, même si la charge de linge est faible. Réciproquement si on désire un gain de temps et/ou réaliser des économies, même si la charge de linge est grande on positionnera l'organe d'affichage de façon telle qu'il corresponde à de faibles quantités de linge.The user actuable member can act on the washing program in the same way as the automatically determined load signal; in this case the member is analogous to that of a machine in which the load is displayed at will by the user. But this organ is then used for a different purpose. For example, if a high washing efficiency is desired, the display member is adjusted so that it corresponds to a large quantity of laundry, even if the laundry load is low. Conversely, if it is desired to save time and / or make savings, even if the load of laundry is large, the display member will be positioned in such a way that it corresponds to small quantities of laundry.

On peut utiliser une autre grandeur que la charge pour commander le programme du lave-linge. Ainsi, en variante, le lave-linge comporte un moyen de détection automatique du type de linge introduit dans la machine, par exemple celui décrit dans le brevet français 8402437 (EP-A-0159202), et l'adaptation du programme de lavage est effectuée de façon automatique en fonction de la valeur de cette grandeur. L'organe de réglage permet, dans ce cas aussi, soit d'augmenter l'efficacité du lavage soit de réaliser des économies ou de gagner du temps.You can use a quantity other than the load to control the washing machine program. Thus, as a variant, the washing machine includes means for automatically detecting the type of laundry introduced into the machine, for example that described in French patent 8402437 (EP-A-0159202), and the adaptation of the washing program is performed automatically according to the value of this quantity. In this case, too, the adjustment member makes it possible either to increase the efficiency of the washing or to save money or save time.

Comme autre grandeur détectable automatiquement et agissant sur le programme on peut également indiquer le degré de salissure ou le degré d'humidité du linge.As another quantity which can be detected automatically and which acts on the program, it is also possible to indicate the degree of soiling or the degree of humidity in the laundry.

L'invention s'applique aussi à un sèche-linge comportant des moyens de détection automatique d'une grandeur liée au linge, telle que la charge, agissant sur les paramètres du séchage, qui est caractérisé en ce qu'il comprend en un organe de réglage actionnable par l'utilisateur pour mettre hors d'action les moyens de détection de la grandeur et qui permet de modifier les paramètres (du lavage ou) du séchage. La grandeur liée au linge peut-être dans ce cas la charge de linge, la nature du linge et le degré d'humidité. Les paramètres du séchage commandés par l'organe actionnable par l'utilisateur peuvent-être le temps de fonctionnement du séche-linge et l'énergie fournie à ce sèche-linge.The invention also applies to a dryer comprising means for automatically detecting a quantity linked to the laundry, such as the load, acting on the drying parameters, which is characterized in that it comprises a member adjustable by the user to deactivate the size detection means and which makes it possible to modify the parameters (of washing or) of drying. The size linked to the laundry may in this case the load of laundry, the nature of the laundry and the degree of humidity. The drying parameters controlled by the user-actuable member may be the operating time of the dryer and the energy supplied to this dryer.

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 aux dessins ci-annexés sur lesquels:

  • la figure 1 est un schéma d'un programmateur de lave-linge selon l'invention,
  • les figures 2a, 2b et 20 sont des diagrammes illustrant le fonctionnement d'une partie du dispositif de la figure 1,
  • la figure 3 est une schéma d'un organe de commande du lave-linge selon l'invention et
  • la figure 4 est un organigramme montrant une partie de la programmation du microprocesseur du dispositif de la figure 1.
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 attached drawings in which:
  • FIG. 1 is a diagram of a washing machine programmer according to the invention,
  • FIGS. 2a, 2b and 20 are diagrams illustrating the operation of part of the device of FIG. 1,
  • FIG. 3 is a diagram of a control member of the washing machine according to the invention and
  • FIG. 4 is a flowchart showing part of the programming of the microprocessor of the device of FIG. 1.

Le programmateur du lave-linge qu'on va décrire en relation avec les figures comporte, d'une part, un composant électro-mécanique et d'autre part un composant électronique à microprocesseur 12.The washing machine programmer which will be described in relation to the figures comprises, on the one hand, an electro-mechanical component and on the other hand an electronic component with microprocessor 12.

Le composant électromécanique est formé d'un moteur électrique 10 entraînant une ou plusieurs cames (non représentées) agissant sur l'état - ouvert ou fermé - d'interrupteurs 13i, 132 et 13g.The electromechanical component is formed by an electric motor 10 driving one or more cams (not shown) acting on the state - open or closed - of switches 13 i , 13 2 and 13g.

Le moteur 10 est en série avec un triac 11 dont la gâchette est reliée à une sortie 12, du microprocesseur 12. Ce triac est en parallèle avec un interrupteur 25 du composant électromécanique.The motor 10 is in series with a triac 11, the trigger of which is connected to an output 12, of the microprocessor 12. This triac is in parallel with a switch 25 of the electromechanical component.

Les états des interrupteurs 131, 132 et 133 représentent, à chaque instant, l'état d'avancement du programme de lavage. Autrement dit, selon leur état, les interrupteurs permettent de savoir si le lave-linge est en période de prélavage, de lavage, de rinçage ou d'essorage.The states of the switches 13 1 , 13 2 and 13 3 represent, at each instant, the state of progress of the washing program. In other words, according to their state, the switches make it possible to know whether the washing machine is in the prewash, washing, rinsing or spinning period.

Les signaux représentant ces états d'interrupteurs sont appliqués à une entrée commune 14 du microprocesseur 12 qui commande, par l'intermédiaire de circuits interfaces (non représentés), l'alimentation du moteur d'entrainement du tambour du lave-linge et son sens de marche ainsi que la durée de chaque phase du programme à exécuter. A cet effet le microprocesseur 12 contrôle, grâce au triac 11 et à l'interrupteur 25, la rotation du micromoteur 10 pour passer d'une phase du programme à une autre.The signals representing these switch states are applied to a common input 14 of the microprocessor 12 which controls, via interface circuits (not shown), the supply of the drive motor of the washing machine drum and its direction. the duration of each phase of the program to be executed. To this end, the microprocessor 12 controls, thanks to the triac 11 and to the switch 25, the rotation of the micromotor 10 to pass from one phase of the program to another.

Certains des interrupteurs du programmateur électromécanique commandent - de façon classique - directement d'autres organes du lave-linge tels que la résistance de chauffage de l'eau, la pompe de vidange et les électrovannes.Some of the electromechanical programmer switches control - in a conventional way - directly other parts of the washing machine such as the water heating resistor, the drain pump and the solenoid valves.

Outre la sortie 12, reliée à la gâchette du triac 11, le microprocesseur présente une sortie 122 de commande du moteur d'entrainement du tambour et une entrée 126 reliée, par l'interrupteur d'un circuit interface 28, à la borne 27 commune au triac 11, à l'interrupteur 25 et au moteur 10.In addition to the output 12, connected to the trigger of the triac 11, the microprocessor has an output 12 2 for controlling the drum drive motor and an input 12 6 connected, by the switch of an interface circuit 28, to the terminal. 27 common to triac 11, switch 25 and motor 10.

Le triac 11 est utilisé pour déclencher le passage d'une étape du programme de lavage à une autre et ce triac 11 est coupé quand on a constaté que l'opération de passage de pas a débuté.The triac 11 is used to trigger the passage from one stage of the washing program to another and this triac 11 is cut when it has been observed that the step change operation has started.

Le microprocesseur 12 surveille, par l'entrée 126, l'état de conduction de l'interrupteur 25 et, dès qu'il a détecté que cet interrupteur est fermé, le triac 11 est ouvert.The microprocessor 12 monitors, through the input 12 6 , the conduction state of the switch 25 and, as soon as it has detected that this switch is closed, the triac 11 is open.

Quand le microprocesseur 12 commande la conduction du triac 11 le moteur 10 commence à tourner. Pour permettre la surveillance de l'état de conduction de l'interrupteur 25 ce triac 11 est ouvert périodiquement, par exemple pour une alternance sur dix du signal alternatif du réseau d'alimentation et, pendant ce temps, le microprocesseur utilise la donnée introduite par son entrée 126 pour déterminer si l'interrupteur 25 est ouvert ou fermé. Si cet interrupteur 25 est ouvert la borne 27 est en l'air et le circuit 28 transmet un signal binaire, qui est par exemple "0", sur l'entrée 126. Dans ces conditions, après cette alternance, le triac 11 est de nouveau fermé et la lecture s'effectue encore périodiquement de la manière décrite. Quand l'interrupteur 25 est fermé le circuit transmet un signal "1" sur l'entrée 126. Dans ce cas, après détection de ce signal, le triac 11 est ouvert.When the microprocessor 12 controls the conduction of the triac 11 the motor 10 begins to rotate. To allow monitoring of the conduction state of the switch 25, this triac 11 is opened periodically, for example for one alternation in ten of the alternating signal from the supply network and, during this time, the microprocessor uses the data entered its input 12 6 to determine whether the switch 25 is open or closed. If this switch 25 is open, terminal 27 is in the air and circuit 28 transmits a binary signal, which is for example "0", on input 12 6 . Under these conditions, after this alternation, the triac 11 is again closed and the reading is still carried out periodically in the manner described. When the switch 25 is closed the circuit transmits a signal "1" on the input 12 6 . In this case, after detection of this signal, the triac 11 is open.

A la fin du passage de pas l'interrupteur 25 s'ouvre, le triac 11 restant ouvert.At the end of the passage of step the switch 25 opens, the triac 11 remaining open.

Une borne de chaque interrupteur 13 est reliée à une borne 16 de l'alimentation en courant alternatif ou alimentation secteur. L'autre borne de chaque interrupteur est reliée à une borne commune 16' par l'intermédiaire de résistance, respectivement 171, 172 et 173. La borne 16' est reliée à la base d'un transistor 20 de type NPN par l'intermédiaire d'une résistance 19. Par ailleurs la borne 16' est connectée à la masse à travers une résistance 21.A terminal of each switch 13 is connected to a terminal 16 of the alternating current supply or mains supply. The other terminal of each switch is connected to a common terminal 16 'via a resistor, respectively 17 1 , 17 2 and 17 3 . Terminal 16 'is connected to the base of an NPN transistor 20 via a resistor 19. Furthermore, terminal 16' is connected to ground through a resistor 21.

L'émetteur du transistor 20 est à la masse tandis que son collecteur est relié à l'entrée 14 du microprocesseur 12 ainsi qu'à une borne 22, portée à un potentiel de référence, par l'intermédiaire d'une résistance 23.The emitter of transistor 20 is grounded while its collector is connected to input 14 of microprocessor 12 and to a terminal 22, brought to a reference potential, via a resistor 23.

A chaque alternance du courant alternatif (50 Hz) la durée de conduction du transistor 20 dépend de l'amplitude du signal alternatif appliqué sur sa base 20. Cette propriété apparaît clairement sur les figures 2a et 2b sur lesquelles on a porté en abscisses le temps t et en ordonnées le potentiel sur la base du transistor 20 (pour la figure 2a) et le potentiel du collecteur 20 (pour la figure 2b). Le transistor 20 est conducteur quand le potentiel de sa base dépasse le seuil VBE. On voit ainsi que, pour un premier signal alternatif 30 de plus grande amplitude qu'un second signal alternatif 31, la durée t1 de conduction est supérieure à la durée t2 pour le second signal.At each alternation of the alternating current (50 Hz) the conduction time of the transistor 20 depends on the amplitude of the alternating signal applied to its base 20. This property appears clearly in FIGS. 2a and 2b on which we have plotted the abscissa. time t and on the ordinate the potential on the base of transistor 20 (for FIG. 2a) and the potential of collector 20 (for FIG. 2 b ). The transistor 20 is conductive when the potential of its base exceeds the threshold V BE . It can thus be seen that, for a first alternating signal 30 of greater amplitude than a second alternating signal 31, the duration t 1 of conduction is greater than the duration t 2 for the second signal.

Le microprocesseur 12 est programmé pour convertir les temps t1 et t2 en nombres binaires.The microprocessor 12 is programmed to convert the times t 1 and t 2 into binary numbers.

Les valeurs des résistances 17i, 172, et 173 sont suffisamment distinctes pour que toutes les combinaisons possibles d'états (ouverts ou fermés) des interrupteurs 131, 132, et 133 correspondent à des signaux de valeurs différentes sur l'entrée 14.The values of the resistors 17 i , 17 2 , and 173 are sufficiently distinct so that all the possible combinations of states (open or closed) of the switches 13 1 , 13 2 , and 13 3 correspond to signals of different values on the entry 14.

Par ailleurs le microprocesseur 12 présente une entrée 123 reliée: à une armature d'un condensateur 40, aux premières bornes de résistances 41 et 42, et à la première borne d'extrémité 43, d'un potentiomètre 43.Furthermore, the microprocessor 12 has an input 12 3 connected: to an armature of a capacitor 40, to the first resistance terminals 41 and 42, and to the first end terminal 43, of a potentiometer 43.

La seconde armature du condensateur 40 est reliée à une borne 441 sur laquelle est appliquée un potentiel Ccc de valeur prédéterminée.The second armature of the capacitor 40 is connected to a terminal 44 1 to which a potential C cc of predetermined value is applied.

La résistance 41 constitue une résistance de référence de valeur R. connue avec précision, par exemple de l'ordre de ±1 %, et sa seconde borne est connectée à une sortie 127 du microprocesseur 12.The resistor 41 constitutes a reference resistor of value R. known with precision, for example of the order of ± 1%, and its second terminal is connected to an output 12 7 of the microprocessor 12.

La résistance 42 constitue une thermistance de mesure de la température de l'eau dans la cuve du lave-linge. Sa seconde borne est connectée à une sortie 128 du microprocesseur.The resistor 42 constitutes a thermistor for measuring the temperature of the water in the tank of the washing machine. Its second terminal is connected to an output 12 8 of the microprocessor.

La prise 433 du potentiomètre 43 est reliée à une sortie 129 du microprocesseur 12. La seconde borne d'extrémité 432 de ce potentiomètre 43 est connectée à une sortie 1210 du microprocesseur par l'intermédiaire d'un interrupteur 44 de type fin de course. Le potentiomètre 43 et l'interrupteur 44 sont actionnés par un curseur 45 (figure 3) déplaçable de façon continue entre deux positions d'extrémité 46 et 47. Dans la position 46 du curseur 45 l'interrupteur 44 est ouvert, tandis que dans les autres positions cet interrupteur 44 est fermé.The socket 43 3 of the potentiometer 43 is connected to an output 12 9 of the microprocessor 12. The second end terminal 43 2 of this potentiometer 43 is connected to an output 12 10 of the microprocessor by means of a switch 44 of the type limit switch. The potentiometer 43 and the switch 44 are actuated by a cursor 45 (FIG. 3) which can be moved continuously between two end positions 46 and 47. In the position 46 of the cursor 45 the switch 44 is open, while in the other positions this switch 44 is closed.

Pour déterminer, à l'aide du microprocesseur 12, la valeur R de la résistance 42, c'est-à-dire la température de l'eau dans la cuve du lave-linge, on procède comme suit: le condensateur 40 est d'abord déchargé, par exemple en reliant les bornes 44, et 123 du même potentiel, celui Ccc qui est appliqué en permanence sur la borne 441. Ensuite la borne 123 constitue de nouveau une entrée. Puis la sortie 127 du microprocesseur est reliée à la masse (potentiel 0). Par contre les sorties 128, 129, 12io sont en l'air. Dans ces conditions le condensateur 40 se charge à travers la résistance 41. Le signal sur l'entrée 123 est le potentiel V de la première armature du condensateur 40 (figure 2c). A l'instant t = 0 ce potentiel a la valeur Vcc puis il diminue comme représenté par la courbe 50 sur le diagramme de la figure 2c. Le microprocesseur 12 est programmé pour mesurer le temps t, au bout duquel ce signal V sur l'entrée 123 atteint la valeur Vo. Ce temps t, est transformé en un nombre binaire par le microprocesseur 12. La valeur Vo constitue le seuil d'entrée du microprocesseur.To determine, using the microprocessor 12, the value R of the resistor 42, that is to say the temperature of the water in the tank of the washing machine, the procedure is as follows: the capacitor 40 is d 'first discharged, for example by connecting terminals 44, and 12 3 of the same potential, that C cc which is permanently applied to terminal 44 1 . Then terminal 12 3 again constitutes a Entrance. Then the output 12 7 of the microprocessor is connected to ground (potential 0). On the other hand, the outputs 12 8 , 12 9 , 12 io are in the air. Under these conditions the capacitor 40 charges through the resistor 41. The signal on the input 12 3 is the potential V of the first armature of the capacitor 40 (FIG. 2 c ). At the instant t = 0 this potential has the value V cc then it decreases as represented by the curve 50 on the diagram of FIG. 2 c . The microprocessor 12 is programmed to measure the time t, at the end of which this signal V on the input 12 3 reaches the value V o . This time t, is transformed into a binary number by the microprocessor 12. The value V o constitutes the input threshold of the microprocessor.

Ensuite on décharge de nouveau le condensateur 40 et on connecte la sortie 128 à la masse tandis que les sorties 127, 129 et 1210 sont en l'air. Le condensateur 40 se charge alors à travers la résistance 42. Sur l'entrée 123 on obtient la courbe 51 et on mesure le temps t2 au bout duquel le potentiel V sur l'entrée 123 atteint la valeur Vo.Then the capacitor 40 is again discharged and the output 12 8 is connected to ground while the outputs 12 7 , 12 9 and 12 10 are in the air. The capacitor 40 then charges through the resistor 42. On the input 12 3 we obtain the curve 51 and the time t 2 is measured at the end of which the potential V on the input 12 3 reaches the value V o .

Ensuite le microprocesseur détermine la valeur R de la résistance 42 selon la formule suivante:

Figure imgb0001
Then the microprocessor determines the R value of the resistor 42 according to the following formula:
Figure imgb0001

Pour déterminer la position 433 de la prise du potentiomètre 43, c'est-à-dire la position du curseur 45 (figure 3), on procède de manière analogue: le condensateur 40 est déchargé puis on mesure le temps t'i pour lequel le potentiel V sur l'entrée 123 atteint le potentiel Vo quand le condensateur 40 se charge à travers la résistance totale du potentiomètre 43, l'interrupteur 44 étant alors bien entendu fermé; ensuite on détermine le temps t'2 pour que le potentiel sur l'entrée 123 atteigne la valeur Vo quand le condensateur 40 se charge par la résistance présentée entre les bornes 43, et 433. Dans ce cas la position du curseur 45 est représenté par le nombre a:

Figure imgb0002
To determine the position 43 3 of the potentiometer socket 43, that is to say the position of the cursor 45 (FIG. 3), the procedure is analogous: the capacitor 40 is discharged then the time t ' i for which the potential V on the input 12 3 reaches the potential V o when the capacitor 40 charges through the total resistance of the potentiometer 43, the switch 44 then being of course closed; then the time t ' 2 is determined so that the potential on the input 12 3 reaches the value V o when the capacitor 40 is charged by the resistance presented between the terminals 43, and 43 3 . In this case the position of the cursor 45 is represented by the number a:
Figure imgb0002

La position du curseur 45, c'est-a-dire de la prise 433, est choisie, par l'utilisateur, avant la mise en route de la machine. Si, quand la mise en route est commandée, le curseur 45 est dans la position 46, le microprocesseur commande le fonctionnement du lave-linge selon une séquence décrite dans le brevet français 8316997 (EP-A-0143685) pour déterminer la charge de linge, et les diverses étapes ultérieures de fonctionnement du lave-linge sont ajustées à la valeur de la charge ainsi mesurée.The position of the cursor 45, that is to say of the socket 43 3 , is chosen by the user before the machine is started up. If, when start-up is commanded, the cursor 45 is in position 46, the microprocessor controls the operation of the washing machine according to a sequence described in French patent 8316997 (EP-A-0143685) to determine the load of laundry. , and the various subsequent stages of operation of the washing machine are adjusted to the value of the load thus measured.

Par contre quand l'interrupteur 44 est fermé, c'est-à-dire quand le curseur 45 n'est pas dans sa position 46 de fin de course, les paramètres de fonctionnement du lave-linge dépendent de la position du curseur entre les extrémités 46 et 47, c'est-à-dire du nombre a. La sélection entre ces deux types de fonctionnement correspond à l'organigramme de la figure 4 qui fait partie de la description de la présente demande.On the other hand, when the switch 44 is closed, that is to say when the cursor 45 is not in its end position 46, the operating parameters of the washing machine depend on the position of the cursor between the ends 46 and 47, that is to say of the number a. The selection between these two types of operation corresponds to the flow diagram of FIG. 4 which is part of the description of the present application.

Le microprocesseur est programmé de façon telle que, lorsque le curseur 45 est déplacé (de façon rectiligne dans l'exemple), dans le sens de la flèche 32 (figure 3), vers la position 47 l'efficacité du lavage augmente. En particulier le temps de chaque opération, l'énergie utilisée au cours de chacune de ces opérations, la quantité d'eau et, éventuellement (si le lave-linge comporte un doseur automatique), de produit lessiviel augmentent au fur et à mesure qu'on se rapproche de la position 47.The microprocessor is programmed in such a way that, when the cursor 45 is moved (rectilinearly in the example), in the direction of the arrow 32 (FIG. 3), towards position 47 the efficiency of the washing increases. In particular the time of each operation, the energy used during each of these operations, the amount of water and, possibly (if the washing machine has an automatic dosing device), detergent increases as and when 'we're getting closer to position 47.

Réciproquement quand le curseur est déplacé depuis la position 47 vers la position 46 (exclue), c'est-à-dire selon la flèche 33, le programme est effectué en un temps qui diminue et en permettant de réaliser des économies. Cependant la qualité du lavage diminue aussi.Conversely when the cursor is moved from position 47 to position 46 (excluded), that is to say according to arrow 33, the program is carried out in a time which decreases and allowing savings to be made. However, the quality of washing also decreases.

Dans une réalisation, les programmes de lavage mis en oeuvre dans le premier cas (interrupteur 44 ouvert) et dans le second cas (interrupteur 44 fermé) sont identiques, c'est-à-dire que chaque position du curseur 45 (en dehors de l'extrémité 46) correspond à une charge de linge, des charges les plus faibles vers les charges les plus élevées (dans la position 47).In one embodiment, the washing programs implemented in the first case (switch 44 open) and in the second case (switch 44 closed) are identical, that is to say that each position of the cursor 45 (outside of the end 46) corresponds to a load of laundry, from the lowest loads to the highest loads (in position 47).

Cependant les programmes ne sont pas forcément identiques dans les deux cas. Par exemple dans la position extrême 47 du curseur, pour une efficacité renforcée, le temps du lavage est supérieur au temps correspondant pour la charge maximale lorsque le curseur est dans la position 46. A titre d'exemple encore, pour gagner du temps, dans la position extrême vers la gauche, à proximité immédiate de la position 46, le temps du lavage est plus court que pour la plus petite charge prévue dans le programme quand l'interrupteur 44 est ouvert. Il est également possible, quand l'interrupteur 44 est fermé, d'agir sur l'énergie fournie au lave-linge (durée de rotation du tambour, puissance de chauffage de l'eau), sur la quantité d'eau et sur la quantité de produit lessiviel, de façon à obtenir d'avantage de possibilités que dans le cas de détection automatique de la charge et adaptation automatique des paramètres du lavage au signal de charge.However, the programs are not necessarily identical in the two cases. For example in the extreme position 47 of the cursor, for enhanced efficiency, the washing time is greater than the corresponding time for the maximum load when the cursor is in position 46. By way of further example, to save time, in the extreme position to the left, in the immediate vicinity of position 46, the washing time is shorter than for the smallest load provided for in the program when the switch 44 is open. It is also possible, when the switch 44 is closed, to act on the energy supplied to the washing machine (drum rotation time, water heating power), on the quantity of water and on the quantity of detergent, so as to obtain more possibilities than in the case of automatic detection of the load and automatic adaptation of the washing parameters to the load signal.

Il est à noter que, lorsque le curseur 45 est dans la position 46, on peut détecter automatiquement la nature du linge introduit dans le tambour, comme par exemple décrit dans le brevet français n° 8402437 (EP-A-0 159 202). Dans cette position il est aussi possible de détecter le degré de salissure du linge ou encore le degré d'humidité du linge.It should be noted that, when the cursor 45 is in position 46, the nature of the linen introduced into the drum can be automatically detected, as for example described in French patent n ° 8402437 (EP-A-0 159 202). In this position it is also possible to detect the degree of soiling of the laundry or the degree of humidity of the laundry.

La flèche 32 (figure 3) peut-être remplacée par une graduation avec des chiffres ou autres indications représentant l'efficacité du lavage. De même la flèche 33 peut-être matérialisée, parallèlement à la piste de déplacement du curseur 45, par une graduation avec des chiffres ou autres indications représentant l'économie ou le gain de temps.Arrow 32 (Figure 3) can be replaced by a scale with numbers or other indications representing the effectiveness of washing. Likewise, the arrow 33 may be materialized, parallel to the path of movement of the cursor 45, by a graduation with figures or other indications representing the saving or the saving of time.

Dans une variante simplifiée on supprime la détection automatique de charge de linge.In a simplified variant, the automatic detection of laundry load is eliminated.

Claims (12)

1. A washing machine comprising means for the automatic detection of a factor related to the washing to be washed, such as the quantity of the washing, acting on the parameters of the washing process, characterized in that it comprises a regulating member (45) able to be operated by the user in order to render inoperative the automatic detection means for the factor and which make it possible to change the parameters of the washing process in an arbitrary manner.
2. The washing machine as claimed in claim 1, charcterized in that the parameters of the washing process controlled by the member (45) able to be operated by the user include at least one of the following:
the time of operation of the washing machine, the quantity of water, the power supplied to the washing machine and the quantity of detergent product.
3. The washing machine as claimed in claim 1 or claim 2, characterized in that the regulating member is associated with two graduations of which one (32) relates to the thoroughness of washing and the other (33) to the economy or saving in time.
4. The washing machine as claimed in any one of the preceding claims 1 through 3, characterized in that the regulating member comprises a cursor (45), as for instance one being able to be displaced in a rectilinear manner.
5. The washing machine as claimed in any one of the preceding claims, characterized in that the action of the said member (45) is on the position of the slide (433) of a potentiometer (43).
6. The washing machine as claimed in claim 5, characterized in that the potentiometer (43) is placed in series with a switch (44) which is open when the automatic detection means of the quantity of washing or of another parameter related to the washing are in operation.
7. The washing machine as claimed in any one of the preceding claims, characterized in that for each setting of the regulating member, for which the means for the automatic detection of a factor related to the washing are nonoperative, there is a corresponding washing program identical to that provided for a given value of the automatically detected factor.
8. The washing machine as claimed in any one of the preceding claims 1 through 6, characterized in that at least for certain positions of the regu lat- ing member (45) the washing program is different from programs provided in operation with automatic detection of the factor related to the washing.
9. The washing machine as claimed in claim 1, characterized in that the factor related to the washing which is detected in an automatic manner, is at least one of the following:
the quantity of washing, the nature of the washing, the degree of soiling and the percentage of moisture.
10. A drying machine comprising means for the automatic detection of a factor related to the washing, such as the quantity of washing to be dried, acting on drying parameters, characterized in that it comprises a regulating member able to be operated by the user in order to render inoperative the means for the automatic detection of the factor and which make it possible to change the drying parameters in an arbitrary manner.
11. The drying machine as claimed in claim 10, characterized in that the factor related to the washing which is automatically detected is at least one of the following factors:
the quantity of the washing to be dried, the nature of the washing and the percentage of moisture.
12. The drying machine as claimed in claim 10 or claim 11, characterized in that the drying parameters controlled by the member operated by the user include at least one of the following: the time of operation of the washing dryer and the power supplied to the washing machine.
EP87401542A 1986-07-10 1987-07-02 Control apparatus for a washing machine or a laundry dryer using automatic detection of the weight of laundry Expired - Lifetime EP0252817B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8610070A FR2601389B1 (en) 1986-07-10 1986-07-10 CONTROL DEVICE FOR WASHING MACHINE OR DRYER WITH AUTOMATIC DETECTION OF THE LAUNDRY LOAD.
FR8610070 1986-07-10

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EP0252817A1 EP0252817A1 (en) 1988-01-13
EP0252817B1 true EP0252817B1 (en) 1990-09-19

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EP (1) EP0252817B1 (en)
DE (1) DE3765034D1 (en)
ES (1) ES2017736B3 (en)
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Publication number Priority date Publication date Assignee Title
JP3070165B2 (en) * 1991-08-09 2000-07-24 松下電器産業株式会社 Washing machine cloth amount detector
FR2683835B1 (en) * 1991-11-15 1994-02-18 Ciapem WASHING MACHINE OR DRYER WITH TIMER COMPRISING TWO TIME BASES OF DIFFERENT TYPES.
DE4313814B4 (en) * 1993-04-27 2004-09-30 BSH Bosch und Siemens Hausgeräte GmbH Automatically controlled household machine for washing and rinsing laundry
CN114318760B (en) * 2020-09-29 2023-12-05 无锡小天鹅电器有限公司 Control method, water-carrying household appliance and storage medium

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Publication number Priority date Publication date Assignee Title
DE1435031A1 (en) * 1960-08-15 1968-10-31 Siemens Elektrogeraete Gmbh Washing machine
ES440417A1 (en) * 1974-09-06 1977-05-16 Bosch Siemens Hausgeraete Improvements introduced in a clothing washing machine that works according to the drum principle. (Machine-translation by Google Translate, not legally binding)
CH599387A5 (en) * 1975-10-24 1978-05-31 Schulthess Ad Maschinenfabrik Washing or dyeing machine control circuit
FR2409339A1 (en) * 1977-11-16 1979-06-15 Amiens Const Elect Mec MANEUVERABLE WASHING MACHINE REFERRING TO THE NATURE OF THE OBJECTS TO BE WASHED
FR2553881B1 (en) * 1983-10-25 1987-11-20 Esswein Sa METHOD FOR DETERMINING A LAUNDRY LOAD IN A ROTATING DRUM, AND WASHING AND / OR DRYING MACHINE USING THE SAME
FR2559796B1 (en) * 1984-02-17 1986-11-21 Esswein Sa WASHING MACHINE WITH AUTOMATIC DETERMINATION OF THE TYPE OF LAUNDRY INSERTED IN THIS MACHINE

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GR3001161T3 (en) 1992-06-30
ES2017736B3 (en) 1991-03-01
FR2601389A1 (en) 1988-01-15
DE3765034D1 (en) 1990-10-25
EP0252817A1 (en) 1988-01-13
FR2601389B1 (en) 1988-10-07

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