EP2035618B1 - Ironing appliance comprising a safety device and method for making an iron appliance safe - Google Patents

Ironing appliance comprising a safety device and method for making an iron appliance safe Download PDF

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Publication number
EP2035618B1
EP2035618B1 EP07734885A EP07734885A EP2035618B1 EP 2035618 B1 EP2035618 B1 EP 2035618B1 EP 07734885 A EP07734885 A EP 07734885A EP 07734885 A EP07734885 A EP 07734885A EP 2035618 B1 EP2035618 B1 EP 2035618B1
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EP
European Patent Office
Prior art keywords
appliance
thermostat
ironing
threshold
safety relay
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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
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EP07734885A
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German (de)
French (fr)
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EP2035618A1 (en
Inventor
Ekkehard Buth
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Rowenta Werke GmbH
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Rowenta Werke GmbH
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Priority to PL07734885T priority Critical patent/PL2035618T3/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
    • D06F75/00—Hand irons
    • D06F75/08—Hand irons internally heated by electricity
    • D06F75/26—Temperature control or indicating arrangements

Definitions

  • the present invention relates to an ironing apparatus comprising a heating element regulated by means of a thermostat and more particularly to an apparatus provided with a safety device comprising motion detection means and a relay connected in series with the heating element so as to interrupt the supply of the heating element when the apparatus remains too immobile for a long time.
  • Such a safety device controls the opening of the relay only as a function of the time of immobilization of the iron so that the opening of the relay is made most often when the relay is crossed by the supply current of the element. heating.
  • the relay must therefore be sized to support a large number of openings while it is energized, which leads to choosing an expensive relay to manufacture.
  • the following invention aims to provide an ironing apparatus comprising a safety device that is more economical to implement.
  • the invention aims in particular to provide a method of securing an iron that allows to use a less expensive safety relay to manufacture.
  • an ironing apparatus comprising a heating element regulated by means of a thermostat, the apparatus being provided with a safety device comprising motion detection means and a safety relay mounted in series with the heating element to interrupt the power supply of the heating element when the appliance remains too a long time immobile, characterized in that the safety device comprises means for determining the opening state of the thermostat and in that the safety device controls the opening of the safety relay when, simultaneously, the determination means indicate that the thermostat is open and the motion detection means detect immobilization of the apparatus for a time t greater than a warning threshold t 1
  • Such a characteristic makes it possible to control the opening of the safety relay when the latter is not traversed by a current so that the wear of the safety relay is greatly reduced.
  • the safety device controls, at the latest, the opening of the safety relay when the apparatus is stationary for a time t greater than a critical threshold t 2 , the critical threshold t 2 being greater than the alert threshold t 1 .
  • Such a characteristic makes it possible to ensure maximum safety by ensuring that the power supply to the heating element is cut off when the time of immobilization of the apparatus exceeds the critical threshold t 2 .
  • the safety device monitors the state of the thermostat when the time of immobilization of the apparatus is between the alert threshold t 1 and the critical threshold t 2 and controls the opening of the safety relay as soon as the thermostat is detected in an open state by the means for determining the open state.
  • the apparatus comprises a heel on which it can rest during the inactive ironing phases and an ironing plate, in thermal relation with the heating element, on which it can rest for the phases.
  • active ironing apparatus the apparatus comprising position detecting means for determining whether or not the apparatus rests on its heel and the values of the warning threshold t 1 and the critical threshold t 2 are a function of the position of the detected iron by the position detecting means.
  • the values of the alert threshold t 1r and critical threshold t 2r when the iron rests on its heel are respectively more higher than the threshold values t 1s and critical threshold t 2s when the device rests on its sole.
  • the invention also relates to a method of securing an ironing appliance provided with a regulated heating element by means of a thermostat in which a safety relay, arranged in series with the heating element, is open when the appliance remains for a long time immobile, characterized in that the safety relay is open when the thermostat is in an open state and the device is immobile for a time t greater than a warning threshold t 1 .
  • the safety relay is open, at the latest, when the apparatus is stationary for a time t greater than a critical threshold t 2 , the critical threshold t 2 being greater than the alert threshold. t 1 .
  • the state of opening of the thermostat is monitored in a range of immobilization of the apparatus between the alert threshold t 1 and the critical threshold t 2 and the safety relay is open as soon as the thermostat is detected in an open state in the shutdown range.
  • the figure 1 schematically represents the feed circuit of a heating resistor 1 of an iron having a sole in thermal relation with the heating resistor 1 and a heel on which the iron can rest substantially vertically.
  • the heating resistor 1 is connected in series with a thermostat 2 whose set temperature is controlled by the user and the supply circuit comprises two terminals L, N which are subjected to a supply voltage when the iron is connected to the electrical network.
  • the iron is provided with a safety device comprising a safety relay 3 controlled by a control module 4, the safety relay 3 being connected in series with the heating resistor 1 so that the opening of the safety relay 3 interrupts the power supply of the heating resistor 1.
  • the control module 4 receives, in a manner known per se, information from a motion detector 5 and a position sensor 6 for determining whether or not the iron rests on its heel.
  • the position sensor 6 is preferably arranged to detect that the iron rests on its heel when the sole of the iron is inclined more than 20 ° relative to the horizontal.
  • the iron is considered to be placed on its heel when it is placed on an independent iron rest, such as an iron rest built into an ironing board, these iron rests generally having an inclination of about 45 ° .
  • the control module 4 consists of an ASIC or an electronic circuit carried by a printed circuit also supporting all the other elements 3, 5, 6 of the safety device.
  • control module 4 controlling the opening of the safety relay 3 integrates or is connected to means 2a for determining the state of opening or closing of the thermostat 2.
  • these means 2a determine the opening state of the thermostat 2 by measuring the voltage across a voltage divider disposed between the heating element 1 and the thermostat 2 or by measuring the current load through the safety relay 3 using a shunt.
  • the safety device can thus control the opening of the safety relay 3 by taking into account the opening state of the thermostat 2 so that the opening of the safety relay 3 can be performed preferably when the thermostat 2 is open. This avoids the accelerated wear of the safety relay 3 generated in particular by the appearance of arcing when the relay of security 3 is open while it is powered on.
  • control module 4 determines whether the iron is stationary with the aid of the information coming from the motion detector 5.
  • control module 4 executes step 102 of the method in which the control module 4 determines, with the aid of the position sensor 6, whether the iron is immobilized on its heel or on its sole .
  • the control module 4 checks whether the immobilization time of the iron exceeds a critical threshold t 2r , greater than the alert threshold t 1r .
  • control module 4 again carries out the various operations associated with the steps 101 and following of the method.
  • step 110 which consists in controlling the closing of the safety relay 3.
  • step 102 the position sensor 6 sends to the control module 4 the information that the iron rests on its sole
  • the control module 4 executes the steps 103B and following of the method.
  • steps 103B, 104B and 105B of the method are in all respects similar to the steps 103A, 104A and 105A previously described but with threshold values t 1s and t 2s instead of the thresholds t 1r and t 2r .
  • the alert threshold t 1s is of the order of 30 seconds and the critical threshold t 2s is of the order of 40 seconds, so that the closing of the safety relay 3 by the security method intervenes much more quickly when the iron rests on its sole than when it rests on its heel.
  • Such a method of securing an iron by controlling the opening of the safety relay when the thermostat is in an open state in a range of iron downtime between a warning threshold t 1r . t 1s and a critical threshold t 2r , t 2s , has the advantage of allowing in most cases the opening of the safety relay when the latter is not crossed by a current.
  • the thermostat starts to cycle quickly so that the probability that the thermostat is in an open state in the time range between t 1r and t 2r is very important.
  • Such a method of securing thus reduces the solicitation of the safety relay, which allows to significantly increase its life and therefore reduce the size of the relays. This results in a less expensive security device.
  • the security method can also control the activation of one or more LEDs to inform the user when the immobilization time of the iron exceeds respectively the alert threshold and the critical threshold.
  • the security device may have only one sensor which, by an analysis of the signals, will determine both the position of the iron and its setting in motion.
  • this sensor may be a sensor providing a signal relative to the position of the iron, the detection of movement of the iron then being performed by deriving the signal provided by this sensor.
  • the invention can also be applied to a vertical steamer.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Irons (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
  • Forging (AREA)
  • Devices For Medical Bathing And Washing (AREA)

Abstract

Ironing appliance comprising a heating element (1) controlled by means of a thermostat (2), the appliance having a safety device comprising motion detection means (5) and a safety relay (3) connected in series with the heating element (1) to interrupt the supply to said heating element (1) when the appliance is left stationary for too long, said appliance being characterized in that said safety device comprises means (2a) for determining the state of opening of the thermostat (2) and in that the safety device opens said safety relay (3) when, simultaneously, the determining means (2a) indicate that the thermostat (2) is open and the motion detection means (5) detect that the appliance has not been moved for a time t greater than a warning threshold t1.

Description

La présente invention se rapporte à un appareil de repassage comportant un élément chauffant régulé au moyen d'un thermostat et plus particulièrement à un appareil muni d'un dispositif de sécurité comprenant des moyens de détection de mouvement et un relais monté en série avec l'élément chauffant de manière à interrompre l'alimentation de l'élément chauffant lorsque l'appareil reste trop longtemps immobile.The present invention relates to an ironing apparatus comprising a heating element regulated by means of a thermostat and more particularly to an apparatus provided with a safety device comprising motion detection means and a relay connected in series with the heating element so as to interrupt the supply of the heating element when the apparatus remains too immobile for a long time.

Il est connu, du brevet US 4 661 685 , un fer à repasser comportant un élément chauffant et un dispositif de sécurité commandant l'ouverture d'un relais monté en série avec l'élément chauffant pour interrompre l'alimentation de ce dernier lorsque le fer reste trop longtemps immobile sur sa semelle. Ce dispositif de sécurité contribue également à limiter la consommation électrique du fer en interrompant l'alimentation électrique lorsque le fer reste trop longtemps immobile sur son talon.It is known, from the patent US 4,661,685 , an iron comprising a heating element and a safety device controlling the opening of a relay connected in series with the heating element to interrupt the supply of the latter when the iron remains too immobile on its sole. This safety device also helps to limit the power consumption of the iron by interrupting the power supply when the iron remains too long motionless on its heel.

Un tel dispositif de sécurité commande l'ouverture du relais uniquement en fonction du temps d'immobilisation du fer de sorte que l'ouverture du relais s'effectue le plus souvent lorsque le relais est traversé par le courant d'alimentation de l'élément chauffant. Le relais doit donc être dimensionné pour supporter un grand nombre d'ouvertures alors qu'il est sous tension, ce qui conduit à choisir un relais coûteux à fabriquer.Such a safety device controls the opening of the relay only as a function of the time of immobilization of the iron so that the opening of the relay is made most often when the relay is crossed by the supply current of the element. heating. The relay must therefore be sized to support a large number of openings while it is energized, which leads to choosing an expensive relay to manufacture.

L'invention qui suit vise à proposer un appareil de repassage comportant un dispositif de sécurité qui soit plus économique à mettre en oeuvre. L'invention vise notamment à proposer un procédé de sécurisation d'un fer à repasser qui permette d'utiliser un relais de sécurité moins coûteux à fabriquer.The following invention aims to provide an ironing apparatus comprising a safety device that is more economical to implement. The invention aims in particular to provide a method of securing an iron that allows to use a less expensive safety relay to manufacture.

Le but de l'invention est atteint par un appareil de repassage comportant un élément chauffant régulé au moyen d'un thermostat, l'appareil étant muni d'un dispositif de sécurité comprenant des moyens de détection de mouvement et un relais de sécurité monté en série avec l'élément chauffant permettant d'interrompre l'alimentation de l'élément chauffant lorsque l'appareil reste trop longtemps immobile, caractérisé en ce que le dispositif de sécurité comporte des moyens de détermination de l'état d'ouverture du thermostat et en ce que le dispositif de sécurité commande l'ouverture du relais de sécurité lorsque, simultanément, les moyens de détermination indiquent que le thermostat est ouvert et les moyens de détection de mouvement détectent une immobilisation de l'appareil durant un temps t supérieur à un seuil d'alerte t1 The object of the invention is achieved by an ironing apparatus comprising a heating element regulated by means of a thermostat, the apparatus being provided with a safety device comprising motion detection means and a safety relay mounted in series with the heating element to interrupt the power supply of the heating element when the appliance remains too a long time immobile, characterized in that the safety device comprises means for determining the opening state of the thermostat and in that the safety device controls the opening of the safety relay when, simultaneously, the determination means indicate that the thermostat is open and the motion detection means detect immobilization of the apparatus for a time t greater than a warning threshold t 1

Une telle caractéristique permet de commander l'ouverture du relais de sécurité lorsque ce dernier n'est pas traversé par un courant de sorte que l'usure du relais de sécurité est fortement réduite.Such a characteristic makes it possible to control the opening of the safety relay when the latter is not traversed by a current so that the wear of the safety relay is greatly reduced.

Selon une autre caractéristique de l'invention, le dispositif de sécurité commande, au plus tard, l'ouverture du relais de sécurité lorsque l'appareil est immobile durant un temps t supérieur à un seuil critique t2, le seuil critique t2 étant supérieur au seuil d'alerte t1.According to another characteristic of the invention, the safety device controls, at the latest, the opening of the safety relay when the apparatus is stationary for a time t greater than a critical threshold t 2 , the critical threshold t 2 being greater than the alert threshold t 1 .

Une telle caractéristique permet d'assurer une sécurité maximum en assurant la coupure de l'alimentation de l'élément chauffant lorsque le temps d'immobilisation de l'appareil dépasse le seuil critique t2.Such a characteristic makes it possible to ensure maximum safety by ensuring that the power supply to the heating element is cut off when the time of immobilization of the apparatus exceeds the critical threshold t 2 .

Selon une autre caractéristique de l'invention, le dispositif de sécurité surveille l'état du thermostat lorsque le temps d'immobilisation de l'appareil est compris entre le seuil d'alerte t1 et le seuil critique t2 et commande l'ouverture du relais de sécurité aussitôt que le thermostat est détecté dans un état ouvert par les moyens de détermination de l'état d'ouverture.According to another characteristic of the invention, the safety device monitors the state of the thermostat when the time of immobilization of the apparatus is between the alert threshold t 1 and the critical threshold t 2 and controls the opening of the safety relay as soon as the thermostat is detected in an open state by the means for determining the open state.

Selon encore une autre caractéristique de l'invention, l'appareil comporte un talon sur lequel il peut reposer lors des phases inactives de repassage et une semelle de repassage, en relation thermique avec l'élément chauffant, sur laquelle il peut reposer pour les phases actives de repassage, l'appareil comprenant des moyens détecteurs de position permettant de déterminer si l'appareil repose ou non sur son talon et les valeurs du seuil d'alerte t1 et du seuil critique t2 sont fonction de la position du fer détectée par les moyens détecteurs de position.According to yet another characteristic of the invention, the apparatus comprises a heel on which it can rest during the inactive ironing phases and an ironing plate, in thermal relation with the heating element, on which it can rest for the phases. active ironing apparatus, the apparatus comprising position detecting means for determining whether or not the apparatus rests on its heel and the values of the warning threshold t 1 and the critical threshold t 2 are a function of the position of the detected iron by the position detecting means.

Selon une autre caractéristique de l'invention, les valeurs des seuil d'alerte t1r et seuil critique t2r lorsque le fer repose sur son talon sont respectivement plus élevées que les valeurs des seuil d'alerte t1s et seuil critique t2s lorsque l'appareil repose sur sa semelle.According to another characteristic of the invention, the values of the alert threshold t 1r and critical threshold t 2r when the iron rests on its heel are respectively more higher than the threshold values t 1s and critical threshold t 2s when the device rests on its sole.

L'invention concerne également un procédé de sécurisation d'un appareil de repassage muni d'un élément chauffant régulé au moyen d'un thermostat dans lequel un relais de sécurité, disposé en série avec l'élément chauffant, est ouvert lorsque l'appareil reste trop longtemps immobile, caractérisé en ce que le relais de sécurité est ouvert lorsque le thermostat est dans un état ouvert et que l'appareil est immobile depuis un temps t supérieur à un seuil d'alerte t1.The invention also relates to a method of securing an ironing appliance provided with a regulated heating element by means of a thermostat in which a safety relay, arranged in series with the heating element, is open when the appliance remains for a long time immobile, characterized in that the safety relay is open when the thermostat is in an open state and the device is immobile for a time t greater than a warning threshold t 1 .

Selon une autre caractéristique de l'invention, le relais de sécurité est ouvert, au plus tard, lorsque l'appareil est immobile depuis un temps t supérieur à un seuil critique t2, le seuil critique t2 étant supérieur au seuil d'alerte t1.According to another characteristic of the invention, the safety relay is open, at the latest, when the apparatus is stationary for a time t greater than a critical threshold t 2 , the critical threshold t 2 being greater than the alert threshold. t 1 .

Selon une autre caractéristique de l'invention, l'état d'ouverture du thermostat est surveillé dans une plage d'immobilisation de l'appareil comprise entre le seuil d'alerte t1 et le seuil critique t2 et le relais de sécurité est ouvert aussitôt que le thermostat est détecté dans un état ouvert dans la plage d'immobilisation.According to another characteristic of the invention, the state of opening of the thermostat is monitored in a range of immobilization of the apparatus between the alert threshold t 1 and the critical threshold t 2 and the safety relay is open as soon as the thermostat is detected in an open state in the shutdown range.

On comprendra mieux les buts, aspects et avantages de la présente invention, d'après la description donnée ci-après d'un mode particulier de réalisation de l'invention, présenté à titre d'exemple non limitatif, en se référant aux dessins annexés dans lesquels :

  • La figure 1 est une représentation schématique du circuit d'alimentation de l'élément chauffant d'un fer à repasser selon un mode de réalisation particulier de l'invention ;
  • La figure 2 représente un exemple d'algorithme de fonctionnement du procédé de sécurisation selon l'invention.
The aims, aspects and advantages of the present invention will be better understood from the description given below of a particular embodiment of the invention, given by way of non-limiting example, with reference to the appended drawings. wherein :
  • The figure 1 is a schematic representation of the supply circuit of the heating element of an iron according to a particular embodiment of the invention;
  • The figure 2 represents an exemplary operating algorithm of the security method according to the invention.

Seuls les éléments nécessaires à la compréhension de l'invention ont été représentés.Only the elements necessary for the understanding of the invention have been represented.

La figure 1 représente schématiquement, le circuit d'alimentation d'une résistance chauffante 1 d'un fer à repasser comportant une semelle en relation thermique avec la résistance chauffante 1 et un talon sur lequel le fer peut reposer sensiblement verticalement.The figure 1 schematically represents the feed circuit of a heating resistor 1 of an iron having a sole in thermal relation with the heating resistor 1 and a heel on which the iron can rest substantially vertically.

La résistance chauffante 1 est reliée en série avec un thermostat 2 dont la température de consigne est contrôlée par l'utilisateur et le circuit d'alimentation comporte deux bornes L,N qui sont soumises à une tension d'alimentation lorsque le fer est relié au réseau électrique.The heating resistor 1 is connected in series with a thermostat 2 whose set temperature is controlled by the user and the supply circuit comprises two terminals L, N which are subjected to a supply voltage when the iron is connected to the electrical network.

Afin de limiter les risques d'incendie, le fer est muni d'un dispositif de sécurité comportant un relais de sécurité 3 contrôlé par un module de commande 4, le relais de sécurité 3 étant monté en série avec la résistance chauffante 1 de sorte que l'ouverture du relais de sécurité 3 interrompt l'alimentation électrique de la résistance chauffante 1.In order to limit the risk of fire, the iron is provided with a safety device comprising a safety relay 3 controlled by a control module 4, the safety relay 3 being connected in series with the heating resistor 1 so that the opening of the safety relay 3 interrupts the power supply of the heating resistor 1.

Le module de commande 4 reçoit, de manière connue en soi, des informations d'un détecteur de mouvement 5 et d'un capteur de position 6 permettant de déterminer si le fer repose ou non sur son talon. Le capteur de position 6 est préférentiellement disposé pour détecter que le fer repose sur son talon dès lors que la semelle du fer est inclinée de plus de 20° par rapport à l'horizontale. Ainsi, le fer est considéré comme étant posé sur son talon lorsqu'il est placé sur un repose fer indépendant, tel qu'un repose fer intégré à une table à repasser, ces reposes fer possédant généralement une inclinaison de l'ordre de 45°. De manière avantageuse, le module de commande 4 est constitué par un ASIC ou par un circuit électronique porté par un circuit imprimé supportant également l'ensemble des autres éléments 3, 5, 6 du dispositif de sécurité.The control module 4 receives, in a manner known per se, information from a motion detector 5 and a position sensor 6 for determining whether or not the iron rests on its heel. The position sensor 6 is preferably arranged to detect that the iron rests on its heel when the sole of the iron is inclined more than 20 ° relative to the horizontal. Thus, the iron is considered to be placed on its heel when it is placed on an independent iron rest, such as an iron rest built into an ironing board, these iron rests generally having an inclination of about 45 ° . Advantageously, the control module 4 consists of an ASIC or an electronic circuit carried by a printed circuit also supporting all the other elements 3, 5, 6 of the safety device.

Plus particulièrement selon l'invention, le module de commande 4 contrôlant l'ouverture du relais de sécurité 3 intègre ou est relié à des moyens 2a de détermination de l'état d'ouverture ou de fermeture du thermostat 2. A titre d'exemple, ces moyens 2a déterminent l'état d'ouverture du thermostat 2 en mesurant la tension aux bornes d'un diviseur de tension disposé entre l'élément chauffant 1 et le thermostat 2 ou en mesurant la charge de courant traversant le relais de sécurité 3 à l'aide d'un shunt.More particularly according to the invention, the control module 4 controlling the opening of the safety relay 3 integrates or is connected to means 2a for determining the state of opening or closing of the thermostat 2. As an example these means 2a determine the opening state of the thermostat 2 by measuring the voltage across a voltage divider disposed between the heating element 1 and the thermostat 2 or by measuring the current load through the safety relay 3 using a shunt.

Le dispositif de sécurité peut ainsi piloter l'ouverture du relais de sécurité 3 en tenant compte de l'état d'ouverture du thermostat 2 de sorte que l'ouverture du relais de sécurité 3 puisse être effectuée préférentiellement lorsque le thermostat 2 est ouvert. On évite ainsi l'usure accélérée du relais de sécurité 3 générée notamment par l'apparition d'arcs électriques lorsque le relais de sécurité 3 est ouvert alors qu'il est sous tension.The safety device can thus control the opening of the safety relay 3 by taking into account the opening state of the thermostat 2 so that the opening of the safety relay 3 can be performed preferably when the thermostat 2 is open. This avoids the accelerated wear of the safety relay 3 generated in particular by the appearance of arcing when the relay of security 3 is open while it is powered on.

Un mode particulier de réalisation du procédé de sécurisation du fer à repasser selon l'invention va maintenant être décrit en relation avec la figure 2.A particular embodiment of the method of securing the iron according to the invention will now be described in connection with the figure 2 .

Conformément à cette figure, dans une première étape 101 du procédé, le module de commande 4 détermine si le fer est immobile à l'aide de l'information provenant du détecteur de mouvement 5.According to this figure, in a first step 101 of the method, the control module 4 determines whether the iron is stationary with the aid of the information coming from the motion detector 5.

Lorsque fer est considéré comme immobile, le module de commande 4 exécute l'étape 102 du procédé dans laquelle le module de commande 4 détermine, à l'aide du capteur de position 6, si le fer est immobilisé sur son talon ou sur sa semelle.When iron is considered as stationary, the control module 4 executes step 102 of the method in which the control module 4 determines, with the aid of the position sensor 6, whether the iron is immobilized on its heel or on its sole .

Si le fer repose sur son talon, le module de commande 4 passe alors à l'étape 103A du procédé dans laquelle il mesure le temps t écoulé depuis le dernier instant t0 où le fer était identifié comme immobile. Ce temps t d'immobilisation du fer est comparé à un seuil d'alerte t1r prédéterminé, par exemple de l'ordre de 8 minutes, puis en fonction du résultat, les opérations suivantes sont effectuées :

  • si le temps t écoulé est inférieur au seuil d'alerte t1r, le procédé est renvoyé à l'étape 101. Le module de commande 4 continue donc de surveiller le temps t d'immobilisation du fer et de le comparer au seuil t1r.
  • si le temps t d'immobilisation du fer dépasse le seuil d'alerte t1r, alors le procédé passe à l'étape 104A.
If the iron rests on its heel, the control module 4 then goes to step 103A of the method in which it measures the time t elapsed since the last time t 0 where the iron was identified as immobile. This iron immobilization time t is compared with a predetermined warning threshold t 1r , for example of the order of 8 minutes, and then depending on the result, the following operations are performed:
  • if the time t elapsed is below the alert threshold t 1r , the method is returned to step 101. The control module 4 therefore continues to monitor the immobilization time t of the iron and to compare it with the threshold t 1r .
  • if the immobilization time of iron exceeds the alert threshold t 1r, then the process proceeds to step 104A.

Lors de l'étape 104A, le module de commande 4 surveille l'état d'ouverture ou de fermeture du thermostat 2 et effectue les opérations suivantes :

  • si le thermostat 2 est dans un état ouvert, le module de commande 4 exécute alors immédiatement l'étape 106 du procédé dans laquelle le module de commande 4 ordonne l'ouverture du relais de sécurité 3. Une telle ouverture du relais de sécurité 3 s'effectue alors que ce dernier n'est pas traversé par un courant de sorte que l'usure du relais de sécurité est extrêmement faible.
  • à l'inverse, lorsque le thermostat 2 est dans un état fermé, le module de commande 4 exécute l'étape intermédiaire 105A du procédé.
In step 104A, the control module 4 monitors the opening or closing state of the thermostat 2 and performs the following operations:
  • if the thermostat 2 is in an open state, the control module 4 then immediately performs step 106 of the method in which the control module 4 orders the opening of the safety relay 3. Such an opening of the safety relay 3 s when the latter is not traversed by a current so that the wear of the safety relay is extremely low.
  • conversely, when the thermostat 2 is in a closed state, the module of control 4 executes the intermediate step 105A of the method.

Lors de l'étape 105A, le module de commande 4 vérifie si le temps t d'immobilisation du fer excède un seuil critique t2r, supérieur au seuil d'alerte t1r. A titre d'exemple, la valeur du seuil critique t2, pourra être choisie de telle sorte que t2r=t1r + 20 secondes.During step 105A, the control module 4 checks whether the immobilization time of the iron exceeds a critical threshold t 2r , greater than the alert threshold t 1r . By way of example, the value of the critical threshold t 2 can be chosen such that t 2r = t 1r + 20 seconds.

Le module de commande 4 effectue ensuite les opérations suivantes:

  • si le temps t d'immobilisation du fer n'excède pas la valeur du seuil critique t2r, le procédé de sécurité est renvoyé à l'étape 101 et le module de commande 4 effectue de nouveau les opérations associées aux étapes 101 et suivantes.
  • lorsque le temps t d'immobilisation du fer dépasse le seuil critique t2r, le module de commande 4 exécute immédiatement l'étape 106 du procédé dans laquelle le module de commande 4 ordonne l'ouverture du relais de sécurité 3. Cette ouverture du relais de sécurité 3 au delà du seuil critique t2r d'immobilisation s'effectue alors que le relais de sécurité est sous tension.
The control module 4 then performs the following operations:
  • if the iron immobilization time t does not exceed the value of the critical threshold t 2r , the security method is returned to step 101 and the control module 4 performs the operations associated with steps 101 and following again.
  • when the immobilization time of the iron exceeds the critical threshold t 2r , the control module 4 immediately executes step 106 of the method in which the control module 4 orders the opening of the safety relay 3. This opening of the relay 3 safety beyond the critical threshold t 2r immobilization occurs while the safety relay is energized.

Une fois l'ouverture du relais de sécurité 3 effectué, le module de commande 4 effectue de nouveau les différentes opérations associées aux étapes 101 et suivantes du procédé.Once the safety relay 3 has been opened, the control module 4 again carries out the various operations associated with the steps 101 and following of the method.

En particulier, si le détecteur 5 détecte un mouvement du fer lors de l'étape 101 du procédé, le module de commande 4 exécute alors l'étape 110 qui consiste à commander la fermeture du relais de sécurité 3.In particular, if the detector 5 detects a movement of the iron during the step 101 of the method, the control module 4 then executes step 110 which consists in controlling the closing of the safety relay 3.

Enfin, si au cours de l'étape 102, le capteur de position 6 envoie au module de commande 4 l'information selon laquelle le fer repose sur sa semelle, le module de commande 4 exécute alors les étapes 103B et suivantes du procédé. Ces étapes 103B, 104B et 105B du procédé sont en tous points similaires aux étapes 103A, 104A et 105A précédemment décrites mais avec des valeurs de seuils t1s et t2s à la place des seuils t1r et t2r.Finally, if during step 102, the position sensor 6 sends to the control module 4 the information that the iron rests on its sole, the control module 4 then executes the steps 103B and following of the method. These steps 103B, 104B and 105B of the method are in all respects similar to the steps 103A, 104A and 105A previously described but with threshold values t 1s and t 2s instead of the thresholds t 1r and t 2r .

A titre d'exemple, le seuil d'alerte t1s est de l'ordre de 30 secondes et le seuil critique t2s est de l'ordre de 40 secondes de sorte que la fermeture du relais de sécurité 3 par le procédé de sécurisation intervient beaucoup plus rapidement lorsque le fer repose sur sa semelle que lorsqu'il repose sur son talon.By way of example, the alert threshold t 1s is of the order of 30 seconds and the critical threshold t 2s is of the order of 40 seconds, so that the closing of the safety relay 3 by the security method intervenes much more quickly when the iron rests on its sole than when it rests on its heel.

Un tel procédé de sécurisation d'un fer à repasser, en commandant l'ouverture du relais de sécurité dès lors que le thermostat se trouve dans un état ouvert dans une plage de temps d'immobilisation du fer comprise entre un seuil d'alerte t1r. t1s et un seuil critique t2r, t2s, présente l'avantage de permettre dans la plupart des cas l'ouverture du relais de sécurité lorsque ce dernier n'est pas traversé par un courant. En particulier, lorsque le fer repose longtemps sur son talon, le thermostat se met à cycler rapidement de sorte que la probabilité pour que le thermostat se trouve dans un état d'ouverture dans la plage de temps comprise entre t1r et t2r est très importante.Such a method of securing an iron, by controlling the opening of the safety relay when the thermostat is in an open state in a range of iron downtime between a warning threshold t 1r . t 1s and a critical threshold t 2r , t 2s , has the advantage of allowing in most cases the opening of the safety relay when the latter is not crossed by a current. In particular, when the iron rests long on its heel, the thermostat starts to cycle quickly so that the probability that the thermostat is in an open state in the time range between t 1r and t 2r is very important.

Un tel procédé de sécurisation permet donc de réduire la sollicitation du relais de sécurité, ce qui permet d'augmenter considérablement sa durée de vie et donc de réduire le dimensionnement des relais. Il en résulte un dispositif de sécurité moins coûteux.Such a method of securing thus reduces the solicitation of the safety relay, which allows to significantly increase its life and therefore reduce the size of the relays. This results in a less expensive security device.

De manière avantageuse, le procédé de sécurisation peut également commander l'activation d'un ou plusieurs voyants pour informer l'utilisateur lorsque le temps d'immobilisation du fer dépasse respectivement le seuil d'alerte et le seuil critique.Advantageously, the security method can also control the activation of one or more LEDs to inform the user when the immobilization time of the iron exceeds respectively the alert threshold and the critical threshold.

Bien entendu, l'invention n'est nullement limitée au mode de réalisation décrit et illustré qui n'a été donné qu'à titre d'exemple. Des modifications restent possibles, notamment du point de vue de la constitution des divers éléments ou par substitution d'équivalents techniques, sans sortir pour autant du domaine de protection de l'invention.Of course, the invention is not limited to the embodiment described and illustrated which has been given by way of example. Modifications are possible, particularly from the point of view of the constitution of the various elements or by substitution of technical equivalents, without departing from the scope of protection of the invention.

Ainsi, dans une variante de réalisation, le dispositif de sécurité pourra ne comporter qu'un seul capteur qui, par une analyse des signaux, permettra de déterminer à la fois la position du fer et sa mise en mouvement. A titre d'exemple, ce capteur pourra être un capteur fournissant un signal relatif à la position du fer, la détection de mouvement du fer étant alors effectuée en dérivant le signal fourni par ce capteur.Thus, in an alternative embodiment, the security device may have only one sensor which, by an analysis of the signals, will determine both the position of the iron and its setting in motion. For example, this sensor may be a sensor providing a signal relative to the position of the iron, the detection of movement of the iron then being performed by deriving the signal provided by this sensor.

Ainsi, dans une variante de réalisation non représentée, l'invention pourra également être appliquée à un appareil de défroissage vertical.Thus, in an alternative embodiment not shown, the invention can also be applied to a vertical steamer.

Claims (8)

  1. Ironing appliance composed of a heating element (1) controlled by means of a thermostat (2), the appliance being provided with a safety device comprising means for detection of movement (5) and a safety relay (3) assembled in series with the heating element (1) allowing to interrupt the supply of power to said heating element (1) when the appliance remains motionless too long, characterized in that said safety device comprises means (2a) for determining the state of opening of the thermostat (2) and the safety device controls the opening of said safety relay (3) when, simultaneously, the means (2a) for determining indicate that the thermostat (2) is open and the means for detection of movement (5) detect an immobilization of the appliance during a time t longer than an alarm threshold t1.
  2. Ironing appliance according to claim 1, characterized in that the safety device controls, at the latest, the opening of the safety relay (3) when the appliance is motionless during a time t longer than a critical threshold t2, the critical threshold t2 being longer than the alarm threshold t1.
  3. Ironing appliance according to claim 2, characterized in that the safety device monitors the state of the thermostat (2) when the time during which the appliance is motionless is comprised between the alarm threshold t1 and the critical threshold t2 and controls the opening of the safety relay (3) as soon as the thermostat is detected to be in an open state by the means (2a) for determining the state of opening.
  4. Ironing appliance according to any one of claims 1 to 3, characterized in that it is composed of a heel on which it can rest during inactive phases of ironing and an ironing soleplate in thermal communication with the heating element, on which it can rest during active phases of ironing, the appliance comprising position detecting means (6) making it possible to determine if the appliance rests or not on its heel and in that values of the alarm threshold t1 and the critical threshold t2 are a function of the position of the iron detected by the position detecting means (6).
  5. Ironing appliance according to claim 4, characterized in that the values of the alarm threshold t1r and critical threshold t2r when the iron rests on its heel are respectively longer than the values of the alarm threshold t1s and critical threshold t2s when the appliance rests on its soleplate.
  6. Safe operating method for an ironing appliance provided with a heating element (1) controlled by means of a thermostat (2) in which a safety relay (3), disposed in series with the heating element (1), is open when the appliance remains motionless too long, characterized in that the safety relay (3) is open when the thermostat (2) is in an open state and the appliance is motionless for a time t longer than an alarm threshold t1.
  7. Safe operating method according to claim 6, characterized in that the safety relay (3) is opened, at the latest, when the appliance is motionless for a time t longer than a critical threshold t2, the critical threshold t2 being longer than the alarm threshold t1.
  8. Safe operating method for an ironing appliance according to claim 7, characterized in that the state of opening of the thermostat (2) is monitored over a range of immobilization time of the appliance comprised between the alarm threshold t1 and the critical threshold t2 and the safety relay (3) is at opened as soon as the thermostat is detected in an open state in said range of immobilization time.
EP07734885A 2006-07-04 2007-06-15 Ironing appliance comprising a safety device and method for making an iron appliance safe Not-in-force EP2035618B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL07734885T PL2035618T3 (en) 2006-07-04 2007-06-15 Ironing appliance comprising a safety device and method for making an iron appliance safe

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0606059A FR2903428B1 (en) 2006-07-04 2006-07-04 IRONING APPARATUS COMPRISING A SAFETY DEVICE AND METHOD OF SECURING A IRONING APPARATUS.
PCT/IB2007/001701 WO2008004051A1 (en) 2006-07-04 2007-06-15 Ironing appliance comprising a safety device and method for making an iron appliance safe

Publications (2)

Publication Number Publication Date
EP2035618A1 EP2035618A1 (en) 2009-03-18
EP2035618B1 true EP2035618B1 (en) 2010-05-05

Family

ID=37815400

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07734885A Not-in-force EP2035618B1 (en) 2006-07-04 2007-06-15 Ironing appliance comprising a safety device and method for making an iron appliance safe

Country Status (11)

Country Link
US (1) US20090250448A1 (en)
EP (1) EP2035618B1 (en)
CN (1) CN101484627A (en)
AT (1) ATE466990T1 (en)
DE (1) DE602007006312D1 (en)
ES (1) ES2343090T3 (en)
FR (1) FR2903428B1 (en)
PL (1) PL2035618T3 (en)
PT (1) PT2035618E (en)
RU (1) RU2415218C2 (en)
WO (1) WO2008004051A1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090166348A1 (en) * 2007-12-28 2009-07-02 Tsann Kuen (China) Enterprise Co., Ltd Method and device for controlling an iron
CN102021807B (en) * 2009-09-10 2012-06-27 佛山市顺德区盛熙电器制造有限公司 Garment steamer and intelligent control method thereof
ES2398173B1 (en) * 2010-07-21 2014-01-21 Bsh Electrodomesticos España S.A. ELECTRIC HEAT APPLIANCE, AND PROCEDURE FOR CONTROLLING SUCH APPARATUS
CN104074040B (en) * 2014-06-27 2016-08-24 微动科技（杭州）有限公司 It is applied to intelligence system and the processing method of electric iron

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2364433A (en) * 1941-07-29 1944-12-05 Gen Electric Safety switching arrangement for electrically heated devices
US4580038A (en) * 1984-12-31 1986-04-01 Black & Decker, Inc. Indicating and control apparatus for a portable heating appliance
US4661685A (en) * 1985-09-06 1987-04-28 John Zink Company Electronic pressing iron
US5852279A (en) * 1996-10-02 1998-12-22 Windmere Corporation Clothes iron with automatic shut off system controlled by multiple switches
DE10209436A1 (en) * 2001-03-07 2002-09-19 Helmut Prager Device for detecting, monitoring, influencing electric iron operating state has power switch controlled by control unit to perform emergency or safety cut-off depending on iron operating state

Also Published As

Publication number Publication date
RU2009103620A (en) 2010-08-10
WO2008004051A1 (en) 2008-01-10
PT2035618E (en) 2010-07-27
DE602007006312D1 (en) 2010-06-17
ES2343090T3 (en) 2010-07-22
ATE466990T1 (en) 2010-05-15
FR2903428B1 (en) 2008-08-29
RU2415218C2 (en) 2011-03-27
US20090250448A1 (en) 2009-10-08
FR2903428A1 (en) 2008-01-11
EP2035618A1 (en) 2009-03-18
CN101484627A (en) 2009-07-15
PL2035618T3 (en) 2010-10-29

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