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EP1953292B1 - Detection and control device for a household heating device - Google Patents

Detection and control device for a household heating device Download PDF

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Publication number
EP1953292B1
EP1953292B1 EP08290091A EP08290091A EP1953292B1 EP 1953292 B1 EP1953292 B1 EP 1953292B1 EP 08290091 A EP08290091 A EP 08290091A EP 08290091 A EP08290091 A EP 08290091A EP 1953292 B1 EP1953292 B1 EP 1953292B1
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EP
European Patent Office
Prior art keywords
fact
detected
appliance
absence
electronic management
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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.)
Not-in-force
Application number
EP08290091A
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German (de)
French (fr)
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EP1953292A1 (en
Inventor
Yves "Les Joussemelières" Bony
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.)
Atlantic Industrie SAS
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Atlantic Industrie SAS
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Publication of EP1953292A1 publication Critical patent/EP1953292A1/en
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Publication of EP1953292B1 publication Critical patent/EP1953292B1/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
    • D06F58/00—Domestic laundry dryers
    • D06F58/16—Domestic laundry dryers having heatable surfaces for contacting the laundry

Definitions

  • the invention relates to a detection and control device for domestic heating apparatus.
  • Home heating appliances especially bathroom heaters, frequently serve as a support for wet towels or towels that may interfere with the operation of the domestic heater.
  • a first object of the invention is to improve the operation of home heating appliances, with a new device for detecting the presence of an object possibly placed on the domestic heater.
  • a second object of the invention is to promote the control of the domestic heating appliance according to the presence or absence of an object to be detected.
  • a third object of the invention is to allow the drying of an object placed on a domestic heater by adjusting the heating power.
  • the document EP 0429 120 A discloses a sensing device for an electric heater according to the preamble of claim 1.
  • the subject of the invention is a detection and / or control device for a domestic heating appliance, with a view to detecting the presence of an object placed on the appliance, and comprising capacitive detectors connected to an electronic management means, comprising a surface heating element, characterized in that the surface heating element constitutes a surface electrode influenced by the presence of an object to be detected.
  • the invention also relates to a domestic heating appliance comprising a detection device according to the invention.
  • a domestic heating appliance 1 is for example an appliance used in bathrooms having a glass heating body carrying a surface heating element 2.
  • the terminals 3a, 3b of the surface heating element 2 allow the connection to a power source not shown.
  • the terminals 3a, 3c are also connected by wire connection 4 to an electronic management means.
  • the electronic management means comprises an electronic oscillator making it possible to inject a signal into the surface heating element and to process the response to this signal via a microcontroller, according to a known and commercially available technique.
  • a microcontroller for example, a microcontroller
  • the electronic management means 5 may also comprise a display means 6, for example, with light-emitting diodes or with liquid crystals, intended to display the characteristics of an object possibly placed on the domestic heating appliance 1.
  • the influence of this towel or this cloth overlapping the electrode 2 introduces parallel capacitors in the circuit between the surface heating element 2 and another electrode 3c which may consist for example of the frame of the apparatus 1.
  • the surface heating element 2 then constitutes a surface electrode which is influenced by the presence or absence of an object to be detected.
  • Tests have shown not only that the presence of a cloth or a towel on the heating body can be detected without difficulty, but also that the moisture state of a towel or a cloth can be detected .
  • the electronic management means sends a signal to an unrepresented control means of the domestic heating apparatus for controlling the heating power of the heater. device to the characteristics of the detected object.
  • the heating power is increased as the laundry is not sufficiently dry.
  • the surface heating element 2 may serve as a surface electrode 3a and another comb electrode 3c included in the heating element may constitute the second electrode.
  • This second electrode 3c is insulated with respect to the surface electrode.
  • the invention goes against the prejudices of a person skilled in the art who tries to avoid the influence of moisture on the performance of capacitive sensors.
  • the invention takes advantage of this sensitivity to moisture to quantify the moisture state of the object to be detected, usually a cloth or a wet towel.
  • the fact of using the heating element directly as a surface electrode 2 has the advantage of avoiding any additional electrical insulation, because the heating element integrated in the glass heater is already insulated.
  • the electronic devices manufactured by the American company CYPRESS SEMICONDUCTOR CORPORATION and marketed under the name CAPSENSE can advantageously be used for the implementation of the invention.
  • These electronic devices include digital and analog cells managed by a microcontroller.
  • another domestic heater 10 comprises an outer casing 11 which has on the front face a surface electrode 12 which can be influenced by the presence of an object to be detected.
  • the outer casing 11 also contains another means of domestic heating, for example a sealed or double insulated heating body.
  • the surface electrode 12 has a zone 13 limited in dashed lines that can constitute a display means.
  • the display means 6 or 13 may be replaced by sound or equivalent indicators without departing from the scope of the present invention.
  • a sound indicator can thus be activated to indicate that a towel or a wet cloth must be replaced, or alternatively a towel or dried cloth should be removed from the domestic heater.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Control Of Resistance Heating (AREA)
  • Central Heating Systems (AREA)
  • Steam Or Hot-Water Central Heating Systems (AREA)
  • Control Of High-Frequency Heating Circuits (AREA)
  • Control Of Washing Machine And Dryer (AREA)

Abstract

The device has a set of capacitive detectors connected to an electronic management unit (5). The unit is connected to a control unit of a domestic heating appliance (1) for controlling heating power of the appliance based on characteristics of a detected object e.g. towel. The management unit is connected to a display unit (6) i.e. LCD, where the display unit displays the characteristics of the detected object or absence of the detected object. The management unit has a microcontroller that controls the display unit for indicating the absence of the detected object.

Description

L'invention est relative à un dispositif de détection et de commande pour appareil de chauffage domestique.The invention relates to a detection and control device for domestic heating apparatus.

Les appareils de chauffage domestique, en particulier les appareils de chauffage pour salle de bain, servent fréquemment de support à des linges ou à des serviettes humides susceptibles de perturber le fonctionnement de l'appareil de chauffage domestique.Home heating appliances, especially bathroom heaters, frequently serve as a support for wet towels or towels that may interfere with the operation of the domestic heater.

Un premier but de l'invention est d'améliorer le fonctionnement des appareils de chauffage domestique, grâce à un nouveau dispositif de détection de la présence d'un objet éventuellement posé sur l'appareil de chauffage domestique.A first object of the invention is to improve the operation of home heating appliances, with a new device for detecting the presence of an object possibly placed on the domestic heater.

Un deuxième but de l'invention est de favoriser le pilotage de l'appareil de chauffage domestique en fonction de la présence, ou de l'absence d'un objet à détecter.A second object of the invention is to promote the control of the domestic heating appliance according to the presence or absence of an object to be detected.

Un troisième but de l'invention est de permettre le séchage d'un objet posé sur un appareil de chauffage domestique par adaptation de la puissance de chauffe.A third object of the invention is to allow the drying of an object placed on a domestic heater by adjusting the heating power.

Le document EP 0429 120 A décrit un dispositif de détection pour appareil de chauffage électrique selon le préambule de la revendication 1.The document EP 0429 120 A discloses a sensing device for an electric heater according to the preamble of claim 1.

L'invention a pour objet un dispositif de détection et/ou de commande pour appareil de chauffage domestique, en vue de détecter la présence d'un objet posé sur l'appareil, et comportant des détecteurs capacitifs reliés à un moyen électronique de gestion, comportant un élément chauffant surfacique, caractérisé par le fait que l'élément chauffant surfacique constitue une électrode de surface influencée par la présence d'un objet à détecter.The subject of the invention is a detection and / or control device for a domestic heating appliance, with a view to detecting the presence of an object placed on the appliance, and comprising capacitive detectors connected to an electronic management means, comprising a surface heating element, characterized in that the surface heating element constitutes a surface electrode influenced by the presence of an object to be detected.

Selon d'autres caractéristiques alternatives de l'invention :

  • le moyen électronique de gestion est relié à un moyen de commande de l'appareil de chauffage domestique, pour asservir la puissance de chauffe de l'appareil aux caractéristiques d'un objet détecté.
  • le moyen électronique de gestion peut être relié à un moyen d'affichage des caractéristiques d'un objet détecté ou de l'absence d'un objet détecté.
  • le moyen électronique de gestion comporte un oscillateur électronique et un microcontrôleur permettant la mesure de capacité.
  • le microcontrôleur commande le moyen d'affichage, pour indiquer l'absence d'un objet détecté, ou la présence d'un objet détecté et ses caractéristiques.
  • les détecteurs capacitifs constituent des moyens indicateurs d'un état d'humidité d'un objet à détecter, par exemple d'une serviette ou d'un linge humide.
  • les détecteurs capacitifs constituent des moyens indicateurs de l'absence d'un objet à détecter, ou de la présence d'un objet sec, ou de la présence d'un objet humide.
  • les détecteurs capacitifs constituent des moyens indicateurs de l'absence d'un objet à détecter, ou de la présence d'un objet sec, ou de la présence d'un objet humide.
According to other alternative features of the invention:
  • the electronic management means is connected to a control means of the domestic heater, for controlling the heating power of the apparatus to the characteristics of a detected object.
  • the electronic management means may be connected to a means for displaying the characteristics of a detected object or the absence of a detected object.
  • the electronic management means comprises an electronic oscillator and a microcontroller for measuring capacity.
  • the microcontroller controls the display means, to indicate the absence of a detected object, or the presence of a detected object and its characteristics.
  • the capacitive detectors are means indicating a moisture state of an object to be detected, for example a towel or a damp cloth.
  • the capacitive detectors are means of indicating the absence of an object to be detected, or the presence of a dry object, or the presence of a wet object.
  • the capacitive detectors are means of indicating the absence of an object to be detected, or the presence of a dry object, or the presence of a wet object.

L'invention a également pour objet un appareil de chauffage domestique comportant un dispositif de détection selon l'invention.The invention also relates to a domestic heating appliance comprising a detection device according to the invention.

Selon d'autres caractéristiques alternatives de l'invention :

  • l'électrode de surface peut être reliée par liaison filaire à un boîtier contenant un micro contrôleur réalisant une mesure de capacité et portant un moyen d'affichage.
  • le moyen électronique de gestion et des détecteurs capacitifs peuvent être intégrés dans l'appareil de chauffage domestique.
According to other alternative features of the invention:
  • the surface electrode can be connected by wire connection to a housing containing a microcontroller carrying out a capacitance measurement and carrying a display means.
  • the electronic management means and the capacitive sensors can be integrated in the domestic heater.

L'invention sera mieux comprise grâce à la description qui va suivre donnée à titre d'exemple non limitatif en référence aux dessins annexés dans lesquels :

  • La figure 1 représente schématiquement une vue de face d'un premier mode de réalisation de l'invention.
  • La figure 2 représente schématiquement un élément chauffant surfacique formant électrode de surface d'un appareil de chauffage domestique selon l'invention.
  • La figure 3 représente schématiquement une vue de face d'un deuxième mode de réalisation de l'invention.
The invention will be better understood from the following description given by way of nonlimiting example with reference to the accompanying drawings in which:
  • The figure 1 schematically represents a front view of a first embodiment of the invention.
  • The figure 2 schematically represents a surface electrode surface heating element of a domestic heating apparatus according to the invention.
  • The figure 3 schematically shows a front view of a second embodiment of the invention.

Sur la figure 1, un appareil de chauffage domestique 1 selon l'invention est par exemple un appareil utilisé dans les salles de bain présentant un corps de chauffe en verre portant un élément chauffant surfacique 2.On the figure 1 a domestic heating appliance 1 according to the invention is for example an appliance used in bathrooms having a glass heating body carrying a surface heating element 2.

Les bornes 3a, 3b de l'élément chauffant surfacique 2 permettent le branchement à une source de puissance électrique non représentée.The terminals 3a, 3b of the surface heating element 2 allow the connection to a power source not shown.

Les bornes 3a, 3c sont également reliées par liaison filaire 4 à un moyen 5 électronique de gestion.The terminals 3a, 3c are also connected by wire connection 4 to an electronic management means.

De préférence, le moyen 5 électronique de gestion comporte un oscillateur électronique permettant d'injecter un signal dans l'élément chauffant surfacique et de traiter la réponse à ce signal par l'intermédiaire d'un microcontrôleur, selon une technique connue et commercialisée en particulier par la Société de droit américain CYPRESS SEMICONDUCTOR CORPORATION et décrite notamment dans le document WO 2006/116160 A2 .Preferably, the electronic management means comprises an electronic oscillator making it possible to inject a signal into the surface heating element and to process the response to this signal via a microcontroller, according to a known and commercially available technique. by the American company CYPRESS SEMICONDUCTOR CORPORATION and described in particular in the document WO 2006/116160 A2 .

Le moyen électronique de gestion 5 peut également comporter un moyen d'affichage 6 par exemple, à diodes électroluminescentes ou à cristaux liquides, destiné à afficher les caractéristiques d'un objet éventuellement posé sur l'appareil de chauffage domestique 1.The electronic management means 5 may also comprise a display means 6, for example, with light-emitting diodes or with liquid crystals, intended to display the characteristics of an object possibly placed on the domestic heating appliance 1.

Dans le cas où l'objet posé est une serviette ou un linge humide, l'influence de cette serviette ou de ce linge chevauchant l'électrode 2 introduit des capacités parallèles dans le circuit entre l'élément chauffant surfacique 2 et une autre électrode 3c qui peut être constituée par exemple du bâti de l'appareil 1. L'élément chauffant surfacique 2 constitue alors une électrode de surface qui est influencée par la présence ou l'absence d'un objet à détecter.In the case where the object placed is a towel or a damp cloth, the influence of this towel or this cloth overlapping the electrode 2 introduces parallel capacitors in the circuit between the surface heating element 2 and another electrode 3c which may consist for example of the frame of the apparatus 1. The surface heating element 2 then constitutes a surface electrode which is influenced by the presence or absence of an object to be detected.

Des essais ont montré non seulement que la présence d'un linge ou d'une serviette sur le corps de chauffe peut être détectée sans difficulté, mais également que l'état d'humidité d'une serviette ou d'un linge peut être détecté.Tests have shown not only that the presence of a cloth or a towel on the heating body can be detected without difficulty, but also that the moisture state of a towel or a cloth can be detected .

Dans le cas où le linge ou la serviette posée sur le corps de chauffe est humide, le moyen 5 électronique de gestion envoie un signal à un moyen de commande non représenté de l'appareil de chauffage domestique pour asservir la puissance de chauffe de l'appareil aux caractéristiques de l'objet détecté.In the case where the laundry or the towel placed on the heating body is wet, the electronic management means sends a signal to an unrepresented control means of the domestic heating apparatus for controlling the heating power of the heater. device to the characteristics of the detected object.

Ainsi, dans le cas d'un linge très humide, la puissance de chauffe est augmentée tant que le linge n'est pas suffisamment sec.Thus, in the case of a very wet cloth, the heating power is increased as the laundry is not sufficiently dry.

Sur la figure 2, un élément chauffant 2 surfacique est représenté.On the figure 2 a surface heating element 2 is shown.

L'élément chauffant 2 surfacique peut servir d'électrode de surface 3a et une autre électrode en peigne 3c Incluse dans l'élément chauffant peut constituer la deuxième électrode.The surface heating element 2 may serve as a surface electrode 3a and another comb electrode 3c included in the heating element may constitute the second electrode.

Cette deuxième électrode 3c est isolée par rapport à l'électrode de surface.This second electrode 3c is insulated with respect to the surface electrode.

Lorsqu'un linge recouvre en partie ou en totalité une aire interceptant les deux électrodes 3a et 3c, l'effet d'influence est notablement augmenté lorsque ce linge est humide.When a cloth covers part or all of an area intercepting the two electrodes 3a and 3c, the influence effect is significantly increased when the cloth is wet.

Selon une variante perfectionnée de l'invention, on détecte non seulement, la présence d'un linge humide ou sec, mais également, une estimation du taux de recouvrement de l'électrode 2 de surface par ce linge et une estimation du taux d'humidité.According to an improved variant of the invention, not only is the presence of a wet or dry cloth detected, but also an estimation of the coverage rate of the surface electrode 2 by this cloth and an estimation of the rate of humidity.

L'invention va à l'encontre des préjugés d'un homme du métier qui tente d'éviter l'influence de l'humidité sur les performances des détecteurs capacitifs.The invention goes against the prejudices of a person skilled in the art who tries to avoid the influence of moisture on the performance of capacitive sensors.

En effet, alors que la sensibilité à l'humidité est généralement considérée par l'homme du métier comme un inconvénient qu'il faut éviter, l'invention tire avantage de cette sensibilité à l'humidité pour quantifier l'état d'humidité de l'objet à détecter, généralement un linge ou une serviette humide.Indeed, while sensitivity to moisture is generally considered by those skilled in the art as a disadvantage that must be avoided, the invention takes advantage of this sensitivity to moisture to quantify the moisture state of the object to be detected, usually a cloth or a wet towel.

Le fait d'utiliser l'élément chauffant directement comme électrode 2 de surface présente l'avantage d'éviter toute isolation électrique supplémentaire, du fait que l'élément chauffant intégré dans le corps de chauffe en verre est déjà isolé.The fact of using the heating element directly as a surface electrode 2 has the advantage of avoiding any additional electrical insulation, because the heating element integrated in the glass heater is already insulated.

On peut utiliser avantageusement pour la mise en oeuvre de l'invention les dispositifs électroniques fabriqués par la Société de droit américain CYPRESS SEMICONDUCTOR CORPORATION et commercialisés sous la dénomination CAPSENSEAdvantageously, the electronic devices manufactured by the American company CYPRESS SEMICONDUCTOR CORPORATION and marketed under the name CAPSENSE can advantageously be used for the implementation of the invention.

Ces dispositifs électroniques comprennent des cellules numériques et analogiques gérées par un microcontrôleur.These electronic devices include digital and analog cells managed by a microcontroller.

Pour la mise en oeuvre de l'invention, il est avantageux d'utiliser ce microcontrôleur pour réaliser également la régulation de l'appareil de chauffage domestique selon l'invention.For the implementation of the invention, it is advantageous to use this microcontroller to also perform the regulation of the domestic heating device according to the invention.

Sur la figure 3, un autre appareil de chauffage domestique 10 selon l'invention comporte une enveloppe externe 11 qui présente en face avant une électrode de surface 12 pouvant être influencée par la présence d'un objet à détecter.On the figure 3 another domestic heater 10 according to the invention comprises an outer casing 11 which has on the front face a surface electrode 12 which can be influenced by the presence of an object to be detected.

L'enveloppe externe 11 contient également un autre moyen de chauffage domestique, par exemple un corps de chauffe étanche ou à double isolation.The outer casing 11 also contains another means of domestic heating, for example a sealed or double insulated heating body.

Selon une variante avantageuse de l'invention, l'électrode de surface 12 présente une zone 13 limitée en traits pointillés pouvant constituer un moyen d'affichage.According to an advantageous variant of the invention, the surface electrode 12 has a zone 13 limited in dashed lines that can constitute a display means.

L'invention décrite en référence à plusieurs modes de réalisation n'y est nullement limitée, mais couvre au contraire toute modification de forme et toute variante de réalisation dans le cadre et l'esprit de l'invention.The invention described with reference to several embodiments is not limited thereto, but on the contrary covers any modification of form and any variant embodiment within the scope and spirit of the invention.

Ainsi, les moyens d'affichage 6 ou 13 peuvent être remplacés par des indicateurs sonores ou équivalents sans sortir du cadre de la présente invention.Thus, the display means 6 or 13 may be replaced by sound or equivalent indicators without departing from the scope of the present invention.

Avantageusement, un indicateur sonore peut ainsi être activé pour signaler qu'une serviette ou qu'un linge mouillé doit être remplacé, ou alternativement qu'une serviette ou un linge séché doit être ôté de l'appareil de chauffage domestique.Advantageously, a sound indicator can thus be activated to indicate that a towel or a wet cloth must be replaced, or alternatively a towel or dried cloth should be removed from the domestic heater.

Claims (9)

  1. A detection and/or control device for a domestic heating appliance (1,10), with view to detecting an object laid on the appliance (1,10), including capacitive detectors connected to an electronic management means (5), and including a heating surface element (2, 12), characterized by the fact that the heating surface element (2, 12) forms a surface electrode (2, 12) influenced by the presence of an object to be detected.
  2. The device according to claim 1, characterized by the fact that the electronic management means (5) is connected to a means for controlling the domestic heating appliance, in order to subordinate the heating power of the appliance (1, 10) to the characteristics of a detected object.
  3. The device according to claim 1 or claim 2, characterized by the fact that the electronic management means (5) is connected to a means (6, 13) for displaying the characteristics of a detected object or the absence of a detected object.
  4. The device according to claim 3, characterized by the fact that the electronic management means (5) includes an electronic oscillator and a microcontroller.
  5. The device according to claim 3 or claim 4, characterized by the fact that the microcontroller controls the display device (6, 13) for indicating the absence of a detected object, or the presence of a detected object and its characteristics.
  6. The device according to any of the preceding claims, characterized by the fact that the capacitive detectors are means indicating a humid state of a object to be detected, for example a towel or a humid cloth.
  7. The device according to claim 6, characterized by the fact that the capacitive detectors are means indicating the absence of an object to be detected, or the presence of a dry object, or the presence of a humid object.
  8. A domestic heating appliance comprising a detection device according to claim 1, characterized by the fact that the surface electrode (2, 12) and a second electrode (3c) are connected through a wired connection (4) to a casing containing a microcontroller managing the measurement of the capacitance between electrodes (3a, 3c) and bearing a display means (6, 13).
  9. The domestic heating appliance comprising a detection device according to claim 1 or claim 7, characterized by the fact that the electronic management means (5) and the capacitive detectors are integrated into the domestic heating appliance (10).
EP08290091A 2007-02-02 2008-02-01 Detection and control device for a household heating device Not-in-force EP1953292B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0700758A FR2912224B1 (en) 2007-02-02 2007-02-02 DETECTION AND CONTROL DEVICE FOR HEATING APPARATUS

Publications (2)

Publication Number Publication Date
EP1953292A1 EP1953292A1 (en) 2008-08-06
EP1953292B1 true EP1953292B1 (en) 2011-04-06

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP08290091A Not-in-force EP1953292B1 (en) 2007-02-02 2008-02-01 Detection and control device for a household heating device

Country Status (5)

Country Link
EP (1) EP1953292B1 (en)
AT (1) ATE504687T1 (en)
DE (1) DE602008005941D1 (en)
ES (1) ES2361590T3 (en)
FR (1) FR2912224B1 (en)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1243760B (en) * 1989-11-17 1994-06-23 Eurodomestici Ind Riunite DEVICE SUITABLE TO DETECT THE PRESENCE IN A COOKING CONTAINER FOR FOOD PLACED ON A COOKING HOB, FOR EXAMPLE IN CERAMIC GLASS.
ES2285639T3 (en) * 2005-04-04 2007-11-16 Electrolux Home Products Corporation N.V. APPLIANCES FOR WASHING AND / OR DRYING CLOTHES.
EP1835066B1 (en) * 2006-03-17 2008-08-06 Electrolux Home Products Corporation N.V. Household appliance for washing and/or drying clothes

Also Published As

Publication number Publication date
FR2912224A1 (en) 2008-08-08
ES2361590T3 (en) 2011-06-20
ATE504687T1 (en) 2011-04-15
EP1953292A1 (en) 2008-08-06
DE602008005941D1 (en) 2011-05-19
FR2912224B1 (en) 2009-07-24

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