WO2006056842A1 - Iron with an enhanced heat shield - Google Patents

Iron with an enhanced heat shield Download PDF

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Publication number
WO2006056842A1
WO2006056842A1 PCT/IB2005/003422 IB2005003422W WO2006056842A1 WO 2006056842 A1 WO2006056842 A1 WO 2006056842A1 IB 2005003422 W IB2005003422 W IB 2005003422W WO 2006056842 A1 WO2006056842 A1 WO 2006056842A1
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WO
WIPO (PCT)
Prior art keywords
heat shield
iron
housing
iron according
hollow volume
Prior art date
Application number
PCT/IB2005/003422
Other languages
French (fr)
Inventor
Martin Giersiepen
Original Assignee
Rowenta Werke Gmbh
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Rowenta Werke Gmbh filed Critical Rowenta Werke Gmbh
Publication of WO2006056842A1 publication Critical patent/WO2006056842A1/en

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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
    • D06F75/00—Hand irons
    • D06F75/08—Hand irons internally heated by electricity
    • D06F75/10—Hand irons internally heated by electricity with means for supplying steam to the article being ironed
    • D06F75/14—Hand irons internally heated by electricity with means for supplying steam to the article being ironed the steam being produced from water in a reservoir carried by the iron

Definitions

  • the present invention relates to irons comprising a housing, an ironing sole provided with a heating element and a heat shield interposed between the sole and the housing.
  • the plastic heat shield it is also known, from the patent application FR 2 852 028, to use the plastic heat shield to delimit at least a portion of the vaporization chamber, so as to reduce the number of parts and facilitate assembly of the iron.
  • the heat shield needs to provide excellent thermal insulation.
  • the thermal insulation capacity is directly related to the thermal conduction properties of the material used.
  • the plastic heat shield generally incorporates a skirt defining the visible portion of the body of the iron located just above the heating sole, the appearance of which can be altered, in particular by the yellowing of the plastic, when the temperature at the level of the skirt becomes too important.
  • the object of the present invention is to overcome these disadvantages by providing an iron with a heat shield having improved thermal insulation properties.
  • an iron comprising a housing, an ironing sole provided with a heating element and a heat shield interposed between the sole and the housing, characterized in that said heat shield has a body enclosing at least one hollow volume.
  • the heat shield is made of thermosetting plastic.
  • the plastic material is loaded with fibers.
  • the heat shield is obtained by molding.
  • the hollow volume is obtained by a method of injecting gas or water during molding.
  • the hollow volume is in the form of a tube.
  • the hollow volume forms a closed enclosure.
  • the closed chamber is filled with air.
  • the hollow volume or volumes represent at least 30% of the volume of the heat shield.
  • the heat shield constitutes the bottom of a tank.
  • FIG. 1 is a longitudinal sectional view of an iron with a heat shield according to a first embodiment of the invention
  • FIG. 2 is an enlarged perspective view of the heat shield of the iron of FIG. 1;
  • FIG. 3 is a view from above of the heat shield of the iron of FIG. 1;
  • - Figure 4 is an enlarged sectional view of the heat shield along the line IV-IV of Figure 3;
  • FIG. 5 is a longitudinal sectional view of an iron with a heat shield according to a second particular embodiment of the invention.
  • FIG. 6 is an enlarged perspective view of the heat shield of the iron of FIG. 5.
  • the iron diagrammatically shown in FIG. 1, comprises a housing 1 made of plastic material incorporating a handle, the housing 1 being disposed above a soleplate 2 in thermal connection with a heating body 3.
  • the heating body 3 conventionally comprises a main vaporization chamber 4 closed by a plate 5 and is provided with a heating element 6 regulated by a thermostat 7.
  • a heat shield 10 is interposed between the upper face of the heating body 3 and the housing 1, the heat shield 10 being fixed on the heating body 3 and the housing 1 being fixed on the heat shield 10.
  • the thermal shield 10 incorporates a skirt 11 lateral in the extension of the outer wall of the housing 1, the skirt 11 extending towards the sole 2 and having a lower edge conforming to the outer shape of the sole 2.
  • the housing 1 encloses a water tank 8 consisting of an upper part 8a and a lower part which are assembled one on the other, the heat shield 10 defining the lower part of the water tank 8
  • the heat shield 10 comprises for this purpose a first channel 12 and a second annular channel 13 receiving, with the interposition of a sealing bead, the walls of the upper part 8a.
  • the tank 8 is provided with a filling orifice 8b opening on the front face of the iron.
  • the iron comprises a device 9 which drips a passage of water from the tank 8 to the vaporization chamber 4, this device typically having an orifice whose section can be reduced by a needle.
  • the heat shield 10 shown in more detail in FIGS.
  • the heat shield 10 is made of thermosetting plastic material filled with glass fibers and the hollow volume 14 contained in the heat shield 10 is obtained by the technique of injection of gas or water.
  • This technique consists of drawing the heat shield 10 and the mold for producing this screen so that the outer wall delimiting the hollow volume 14 solidifies more rapidly than the volume at the heart of the heat shield 10 and to inject gas, such as nitrogen, or water through one end of the heat shield, prior to solidification of the plastic material at the core of the heat shield 10, so as to evacuate the molten material through the other end of the heat shield, thus releasing a hollow volume in the center of the heat shield 10.
  • gas such as nitrogen, or water
  • the gas or water is injected through an orifice 15 disposed on the front of the heat shield 10, this orifice opening perpendicularly to the heat shield 10, and the molten material is extracted by two other orifices 16 disposed on the rear part of the heat shield 10, these gas injection and ejection orifices 16 of material being visible in FIGS. 2 and 3.
  • the various orifices 15, 16 are hermetically closed by plugs so that the hollow volume constitutes a closed chamber filled with air.
  • the injection orifices 15 and ejection 16 will lead preferentially to the face bottom of the heat shield 10, rather than on its upper face defining the bottom of the tank 8, so that it will not be necessary to plug the orifices 15,16 after the injection of gas or water, the air present under the heat shield can then flow freely in the hollow volume 14.
  • a heat shield containing a volume of air, has the advantage of ensuring better thermal insulation of the housing relative to the heating body, this which reduces the temperature of the housing but also the water contained in the tank.
  • the presence of the volume of air in the heat shield locally reduces the thickness of material forming the heat shield, which reduces the flow of heat towards the skirt of the heat shield so that the phenomenon of yellowing of the skirt is reduced.
  • the heat shield may be obtained by another manufacturing method.
  • the heat shield may for example be constituted by the bonding assembly of two parts on one another, the shape of the two parts being adapted so as to locally provide between them the hollow volume.
  • FIGS 5 and 6 illustrate a second embodiment of the invention in which the heat shield 10 of the first embodiment is replaced by a heat shield 20 having a hollow volume of different shape, the other elements constituting the iron being identical to those described in the first embodiment.
  • the heat shield comprises a tube 24 which winds on the upper face of the heat shield 20 so that, preferably, more than 30% of the surface of the heat shield 20 overhanging the vaporization chamber 4 is covered by the tube 24.
  • the heat shield is advantageously made of thermosetting plastic material loaded with iron fiber and the tube is obtained by the gas injection technique as previously described.
  • the tube 24 has an end provided with a gas or water injection orifice, the other end of the tube being provided with an orifice through which the molten plastic material is ejected under pressure. gas or water, these orifices opening on the upper face of the heat shield 20 defining the bottom of the tank, then being plugged to close the tube 24 sealingly.
  • the gas or water injection orifices and ejection of material preferentially lead to the lower face of the heat shield 20, rather than on its upper face defining the bottom of the tank 8 , and will not be plugged so that the air present under the heat shield can then flow freely in the hollow volume 24.
  • the presence of the tube on the heat shield has the advantage of limiting the heat exchange between the heat shield and the water tank which reduces the temperature of the tank and the housing.
  • the thermal screen thus produced therefore has an improved thermal insulation capacity.
  • the hollow volume may contain other types of gas than air.
  • the heat shield may comprise a honeycomb body.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Irons (AREA)

Abstract

An iron including a housing (1), an ironing sole (2) with a heating element (3) and a heat shield (10) provided between the sole (2) and the housing, characterised in that said heat shield (10) has a body enclosing at least one hollow space (14).

Description

FER A REPASSER COMPORTANT UN ECRAN THERMIQUE AMELIORE IRON WITH AN IMPROVED THERMAL SCREEN
La présente invention concerne les fers à repasser comprenant un boîtier, une semelle de repassage munie d'un élément chauffant et un écran thermique interposé entre la semelle et le boîtier.The present invention relates to irons comprising a housing, an ironing sole provided with a heating element and a heat shield interposed between the sole and the housing.
Il est connu du document FR 2 770 856 déposé par la demanderesse, un fer à repasser à vapeur comprenant un boîtier, une semelle de repassage comportant une résistance chauffante, et un écran thermique en matière plastique interposé entre le boîtier et la semelle pour limiter le transfert de chaleur de la semelle vers le boîtier.It is known from the document FR 2,770,856 filed by the applicant, a steam iron comprising a housing, an ironing sole comprising a heating resistor, and a plastic heat shield interposed between the housing and the sole to limit the heat transfer from the sole to the housing.
Il est également connu, de la demande de brevet FR 2 852 028, d'utiliser l'écran thermique en matière plastique pour délimiter au moins une partie de la chambre de vaporisation, de manière à réduire le nombre de pièces et faciliter le montage du fer. Cependant, pour satisfaire à toutes ces applications, l'écran thermique a besoin d'assurer une excellente isolation thermique. Or, la capacité d'isolation thermique est directement liée aux propriétés de conduction thermique du matériau utilisé. De plus, l'écran thermique en matière plastique intègre généralement une jupe définissant la partie visible du corps du fer située juste au-dessus de la semelle chauffante, dont l'aspect peut être altéré, notamment par le jaunissement du plastique, lorsque la température au niveau de la jupe devient trop importante.It is also known, from the patent application FR 2 852 028, to use the plastic heat shield to delimit at least a portion of the vaporization chamber, so as to reduce the number of parts and facilitate assembly of the iron. However, to meet all these applications, the heat shield needs to provide excellent thermal insulation. However, the thermal insulation capacity is directly related to the thermal conduction properties of the material used. In addition, the plastic heat shield generally incorporates a skirt defining the visible portion of the body of the iron located just above the heating sole, the appearance of which can be altered, in particular by the yellowing of the plastic, when the temperature at the level of the skirt becomes too important.
Ainsi, le but de la présente invention est de remédier à ces inconvénients en proposant un fer à repasser comportant un écran thermique possédant des propriétés d'isolation thermique améliorées.Thus, the object of the present invention is to overcome these disadvantages by providing an iron with a heat shield having improved thermal insulation properties.
Le but de l'invention est atteint par un fer à repasser comprenant un boîtier, une semelle de repassage munie d'un élément chauffant et un écran thermique interposé entre la semelle et le boîtier, caractérisé en ce que ledit écran thermique présente un corps renfermant au moins un volume creux. Selon une autre caractéristique de l'invention, l'écran thermique est en matière plastique thermodurcissable.The object of the invention is achieved by an iron comprising a housing, an ironing sole provided with a heating element and a heat shield interposed between the sole and the housing, characterized in that said heat shield has a body enclosing at least one hollow volume. According to another characteristic of the invention, the heat shield is made of thermosetting plastic.
Selon une autre caractéristique de l'invention, le matériau plastique est chargé de fibres.According to another characteristic of the invention, the plastic material is loaded with fibers.
Selon une autre caractéristique de l'invention, l'écran thermique est obtenu par moulage.According to another characteristic of the invention, the heat shield is obtained by molding.
Selon une autre caractéristique de l'invention, le volume creux est obtenu par un procédé d'injection de gaz ou d'eau lors du moulage.According to another characteristic of the invention, the hollow volume is obtained by a method of injecting gas or water during molding.
Une telle caractéristique permet de réaliser un ou plusieurs volumes creux de forme complexe à moindre coût. Selon encore une autre caractéristique de l'invention, le volume creux est en forme de tube.Such a characteristic makes it possible to produce one or more hollow volumes of complex shape at a lower cost. According to yet another characteristic of the invention, the hollow volume is in the form of a tube.
Selon une autre caractéristique de l'invention, le volume creux forme une enceinte fermée.According to another characteristic of the invention, the hollow volume forms a closed enclosure.
Selon une autre caractéristique de l'invention, l'enceinte fermée est remplie d'air. Selon encore une autre caractéristique de l'invention, le ou lesdits volumes creux représentent au moins 30% du volume de l'écran thermique.According to another characteristic of the invention, the closed chamber is filled with air. According to yet another characteristic of the invention, the hollow volume or volumes represent at least 30% of the volume of the heat shield.
Selon encore une autre caractéristique de l'invention, l'écran thermique constitue le fond d'un réservoir.According to yet another characteristic of the invention, the heat shield constitutes the bottom of a tank.
On comprendra mieux les buts, aspects et avantages de la présente invention, d'après la description donnée ci-après de modes particuliers de réalisation de l'invention présentés à titre d'exemple non limitatif, en se référant aux dessins annexés dans lesquels :The aims, aspects and advantages of the present invention will be better understood from the description given below of particular embodiments of the invention presented by way of non-limiting example, with reference to the appended drawings in which:
- la figure 1 est une vue en coupe longitudinale d'un fer à repasser muni d'un écran thermique selon un premier mode particulier de réalisation de l'invention ;- Figure 1 is a longitudinal sectional view of an iron with a heat shield according to a first embodiment of the invention;
- la figure 2 est une vue en perspective agrandie de l'écran thermique du fer de la figure 1 ;FIG. 2 is an enlarged perspective view of the heat shield of the iron of FIG. 1;
- la figure 3 est une vue de dessus de l'écran thermique du fer de la figure 1 ; - la figure 4 est une vue en coupe, agrandie, de l'écran thermique selon la ligne IV-IV de la figure 3 ;FIG. 3 is a view from above of the heat shield of the iron of FIG. 1; - Figure 4 is an enlarged sectional view of the heat shield along the line IV-IV of Figure 3;
- la figure 5 est une vue en coupe longitudinale d'un fer à repasser muni d'un écran thermique selon un second mode particulier de réalisation de l'invention ;- Figure 5 is a longitudinal sectional view of an iron with a heat shield according to a second particular embodiment of the invention;
- la figure 6 est une vue en perspective agrandie de l'écran thermique du fer de la figure 5.FIG. 6 is an enlarged perspective view of the heat shield of the iron of FIG. 5.
Seuls les éléments nécessaires à la compréhension de l'invention ont été représentés. Pour faciliter la lecture des dessins les mêmes éléments portent les mêmes références d'une figure à l'autre.Only the elements necessary for the understanding of the invention have been represented. To facilitate the reading of the drawings, the same elements bear the same references from one figure to another.
Le fer, représenté schématiquement à la figure 1 , comprend un boîtier 1 en matière plastique intégrant une poignée, le boîtier 1 étant disposé au dessus d'une semelle 2 en liaison thermique avec un corps chauffant 3.The iron, diagrammatically shown in FIG. 1, comprises a housing 1 made of plastic material incorporating a handle, the housing 1 being disposed above a soleplate 2 in thermal connection with a heating body 3.
Le corps chauffant 3 comporte classiquement une chambre de vaporisation principale 4 fermée par une plaque 5 et est muni d'un élément chauffant 6 régulé par un thermostat 7.The heating body 3 conventionally comprises a main vaporization chamber 4 closed by a plate 5 and is provided with a heating element 6 regulated by a thermostat 7.
Un écran thermique 10 est interposé entre la face supérieure du corps chauffant 3 et le boîtier 1 , l'écran thermique 10 étant fixé sur le corps chauffant 3 et le boîtier 1 étant fixé sur l'écran thermique 10. De manière avantageuse, l'écran thermique 10 intègre une jupe 11 latérale venant dans le prolongement de la paroi externe du boîtier 1 , la jupe 11 s'étendant en direction de la semelle 2 et présentant un bord inférieur épousant la forme extérieure de la semelle 2.A heat shield 10 is interposed between the upper face of the heating body 3 and the housing 1, the heat shield 10 being fixed on the heating body 3 and the housing 1 being fixed on the heat shield 10. Advantageously, the thermal shield 10 incorporates a skirt 11 lateral in the extension of the outer wall of the housing 1, the skirt 11 extending towards the sole 2 and having a lower edge conforming to the outer shape of the sole 2.
Le boîtier 1 renferme un réservoir d'eau 8 se composant d'une partie supérieure 8a et d'une partie inférieure qui sont assemblées l'une sur l'autre, l'écran thermique 10 définissant la partie inférieure du réservoir d'eau 8. L'écran thermique 10 comporte à cet effet un premier canal 12 et un deuxième canal 13 annulaire recevant, avec interposition d'un cordon d'étanchéité, les parois de la partie supérieure 8a. Le réservoir 8 est muni d'un orifice 8b de remplissage débouchant sur la face avant du fer. De manière habituelle, le fer comporte un dispositif goutte à goutte 9 qui ménage un passage de l'eau du réservoir 8 vers la chambre de vaporisation 4, ce dispositif possédant classiquement un orifice dont la section peut être réduite par un pointeau. Plus particulièrement selon l'invention, l'écran thermique 10, représenté plus en détail sur les figures 2 à 4, intègre un volume creux 14 s'étendant au cœur de l'épaisseur de l'écran thermique, sur une hauteur de quelques millimètres et sur la majeure partie de la surface de l'écran thermique surplombant la chambre de vaporisation principale 4. Préférentiellement, l'écran thermique 10 est réalisé en matière plastique thermodurcissable chargée en fibres de verres et le volume creux 14 contenu dans l'écran thermique 10 est obtenu par la technique d'injection de gaz ou d'eau. Cette technique, connue en soi, et décrite par exemple dans la demande de brevet WO 03/011557, consiste à dessiner l'écran thermique 10 et le moule pour la réalisation de cet écran de telle sorte que la paroi extérieure délimitant le volume creux 14 se solidifie plus rapidement que le volume au cœur de l'écran thermique 10 et à injecter du gaz, tel que de l'azote, ou de l'eau par une extrémité de l'écran thermique, avant la solidification de la matière plastique au cœur de l'écran thermique 10, de manière à évacuer la matière en fusion par l'autre extrémité de l'écran thermique, libérant ainsi un volume creux au centre de l'écran thermique 10.The housing 1 encloses a water tank 8 consisting of an upper part 8a and a lower part which are assembled one on the other, the heat shield 10 defining the lower part of the water tank 8 The heat shield 10 comprises for this purpose a first channel 12 and a second annular channel 13 receiving, with the interposition of a sealing bead, the walls of the upper part 8a. The tank 8 is provided with a filling orifice 8b opening on the front face of the iron. In the usual manner, the iron comprises a device 9 which drips a passage of water from the tank 8 to the vaporization chamber 4, this device typically having an orifice whose section can be reduced by a needle. More particularly according to the invention, the heat shield 10, shown in more detail in FIGS. 2 to 4, incorporates a hollow volume 14 extending at the heart of the thickness of the heat shield, over a height of a few millimeters and over most of the surface of the heat shield overhanging the main vaporization chamber 4. Preferably, the heat shield 10 is made of thermosetting plastic material filled with glass fibers and the hollow volume 14 contained in the heat shield 10 is obtained by the technique of injection of gas or water. This technique, known per se, and described for example in the patent application WO 03/011557, consists of drawing the heat shield 10 and the mold for producing this screen so that the outer wall delimiting the hollow volume 14 solidifies more rapidly than the volume at the heart of the heat shield 10 and to inject gas, such as nitrogen, or water through one end of the heat shield, prior to solidification of the plastic material at the core of the heat shield 10, so as to evacuate the molten material through the other end of the heat shield, thus releasing a hollow volume in the center of the heat shield 10.
Dans l'exemple de réalisation illustré aux figures 1 à 4, le gaz ou l'eau est injecté par un orifice 15 disposé sur l'avant de l'écran thermique 10, cet orifice débouchant perpendiculairement à l'écran thermique 10, et la matière en fusion est extraite par deux autres orifices 16 disposés sur la partie arrière de l'écran thermique 10, ces orifices d'injection 15 de gaz et d'éjection 16 de matière étant visibles sur les figures 2 et 3.In the exemplary embodiment illustrated in FIGS. 1 to 4, the gas or water is injected through an orifice 15 disposed on the front of the heat shield 10, this orifice opening perpendicularly to the heat shield 10, and the molten material is extracted by two other orifices 16 disposed on the rear part of the heat shield 10, these gas injection and ejection orifices 16 of material being visible in FIGS. 2 and 3.
Après éjection de la matière en fusion, les différents orifices 15, 16 sont fermés hermétiquement par des bouchons de manière à ce que le volume creux constitue une enceinte fermée remplie d'air.After ejection of the melt, the various orifices 15, 16 are hermetically closed by plugs so that the hollow volume constitutes a closed chamber filled with air.
Dans une variante de réalisation de l'invention non représentée, les orifices d'injection 15 et d'éjection 16 déboucheront préférentiellement sur la face inférieure de l'écran thermique 10, plutôt que sur sa face supérieure définissant le fond du réservoir 8, de sorte qu'il ne sera pas nécessaire de boucher les orifices 15,16 après l'injection de gaz ou d'eau, l'air présent sous l'écran thermique pouvant alors circuler librement dans le volume creux 14. Un tel écran thermique, renfermant un volume d'air, présente l'avantage, d'assurer une meilleure isolation thermique du boîtier par rapport au corps chauffant, ce qui permet de réduire la température du boîtier mais également de l'eau contenue dans le réservoir. De plus, la présence du volume d'air dans l'écran thermique réduit localement l'épaisseur de matière formant l'écran thermique, ce qui permet de réduire le flux de chaleur se dirigeant vers la jupe de l'écran thermique de sorte que le phénomène de jaunissement de la jupe est réduit.In an alternative embodiment of the invention not shown, the injection orifices 15 and ejection 16 will lead preferentially to the face bottom of the heat shield 10, rather than on its upper face defining the bottom of the tank 8, so that it will not be necessary to plug the orifices 15,16 after the injection of gas or water, the air present under the heat shield can then flow freely in the hollow volume 14. Such a heat shield, containing a volume of air, has the advantage of ensuring better thermal insulation of the housing relative to the heating body, this which reduces the temperature of the housing but also the water contained in the tank. In addition, the presence of the volume of air in the heat shield locally reduces the thickness of material forming the heat shield, which reduces the flow of heat towards the skirt of the heat shield so that the phenomenon of yellowing of the skirt is reduced.
Bien entendu, dans une variante de réalisation de l'invention, l'écran thermique pourra être obtenu par un autre procédé de fabrication. Ainsi l'écran thermique pourra par exemple être constitué par l'assemblage par collage de deux pièces l'une sur l'autre, la forme des deux pièces étant adaptée de manière à ménager localement entre elles le volume creux.Of course, in an alternative embodiment of the invention, the heat shield may be obtained by another manufacturing method. Thus the heat shield may for example be constituted by the bonding assembly of two parts on one another, the shape of the two parts being adapted so as to locally provide between them the hollow volume.
Les figures 5 et 6 illustrent un second mode de réalisation de l'invention dans lequel l'écran thermique 10 du premier mode de réalisation est remplacé par un écran thermique 20 présentant un volume creux de forme différente, les autres éléments constituant le fer à repasser étant identiques à ceux décrits dans le premier mode de réalisation.Figures 5 and 6 illustrate a second embodiment of the invention in which the heat shield 10 of the first embodiment is replaced by a heat shield 20 having a hollow volume of different shape, the other elements constituting the iron being identical to those described in the first embodiment.
Conformément à ces figures, l'écran thermique comporte un tube 24 qui serpente sur la face supérieure de l'écran thermique 20 de sorte que, préférentiellement, plus de 30% de la surface de l'écran thermique 20 surplombant la chambre de vaporisation 4 est recouverte par le tube 24.According to these figures, the heat shield comprises a tube 24 which winds on the upper face of the heat shield 20 so that, preferably, more than 30% of the surface of the heat shield 20 overhanging the vaporization chamber 4 is covered by the tube 24.
L'écran thermique est avantageusement réalisé en matière plastique thermodurcissable chargé en fibre de fer et le tube est obtenu par la technique d'injection de gaz telle que précédemment décrite. A cet effet, le tube 24 comporte une extrémité munie d'un orifice d'injection de gaz ou d'eau, l'autre extrémité du tube étant munie d'un orifice au travers duquel la matière plastique en fusion est éjectée sous la pression du gaz ou de l'eau, ces orifices débouchant sur la face supérieure de l'écran thermique 20 définissant le fond du réservoir, étant ensuite bouchés pour fermer le tube 24 de manière étanche.The heat shield is advantageously made of thermosetting plastic material loaded with iron fiber and the tube is obtained by the gas injection technique as previously described. For this purpose, the tube 24 has an end provided with a gas or water injection orifice, the other end of the tube being provided with an orifice through which the molten plastic material is ejected under pressure. gas or water, these orifices opening on the upper face of the heat shield 20 defining the bottom of the tank, then being plugged to close the tube 24 sealingly.
Dans une variante de réalisation non représentée, les orifices d'injection de gaz ou d'eau et d'éjection de matière déboucheront préférentiellement sur la face inférieure de l'écran thermique 20, plutôt que sur sa face supérieure définissant le fond du réservoir 8, et ne seront pas bouchés de sorte que l'air présent sous l'écran thermique pourra alors circuler librement dans le volume creux 24.In an alternative embodiment not shown, the gas or water injection orifices and ejection of material preferentially lead to the lower face of the heat shield 20, rather than on its upper face defining the bottom of the tank 8 , and will not be plugged so that the air present under the heat shield can then flow freely in the hollow volume 24.
La présence du tube sur l'écran thermique présente l'avantage de limiter l'échange thermique entre l'écran thermique et l'eau du réservoir ce qui permet de réduire la température du réservoir et du boîtier. L'écran thermique ainsi réalisé possède donc une capacité d'isolation thermique améliorée.The presence of the tube on the heat shield has the advantage of limiting the heat exchange between the heat shield and the water tank which reduces the temperature of the tank and the housing. The thermal screen thus produced therefore has an improved thermal insulation capacity.
Bien entendu, l'invention n'est nullement limitée aux modes de réalisations décrits et illustrés qui n'ont été donnés 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 embodiments described and illustrated which have 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 des variantes de réalisation de l'invention, le volume creux pourra contenir d'autres types de gaz que de l'air.Thus, in alternative embodiments of the invention, the hollow volume may contain other types of gas than air.
Ainsi dans une variante de réalisation non représentée, l'écran thermique pourra comporter un corps alvéolé. Thus in a variant embodiment not shown, the heat shield may comprise a honeycomb body.

Claims

REVENDICATIONS
1) Fer à repasser comprenant un boîtier (1) , une semelle de repassage (2) munie d'un élément chauffant (3) et un écran thermique (10, 20) interposé entre la semelle (2) et le boîtier (1), caractérisé en ce que ledit écran thermique (10, 20) présente un corps renfermant au moins un volume creux (14, 24).1) Iron comprising a housing (1), an ironing sole (2) provided with a heating element (3) and a heat shield (10, 20) interposed between the sole (2) and the housing (1) , characterized in that said heat shield (10, 20) has a body enclosing at least one hollow volume (14, 24).
2) Fer à repasser selon la revendication 1 , caractérisé en ce que ledit écran thermique (10, 20) est en matière plastique thermodurcissable. 3) Fer à repasser selon la revendication 2, caractérisé en ce que ledit matériau plastique est chargé de fibres.2) Iron according to claim 1, characterized in that said heat shield (10, 20) is made of thermosetting plastic material. 3) Iron according to claim 2, characterized in that said plastic material is loaded with fibers.
4) Fer à repasser selon l'une quelconque des revendications 1 à 3, caractérisé en ce que l'écran thermique (10, 20) est obtenu par moulage.4) Iron according to any one of claims 1 to 3, characterized in that the heat shield (10, 20) is obtained by molding.
5) Fer à repasser selon l'une quelconque des revendications 1 à 4, caractérisé en ce que ledit volume creux (14, 24) est obtenu par un procédé d'injection de gaz ou d'eau lors du moulage.5) Iron according to any one of claims 1 to 4, characterized in that said hollow volume (14, 24) is obtained by a method of injecting gas or water during molding.
6) Fer à repasser selon l'une quelconque des revendications 1 à 5, caractérisé en que ledit volume creux (14, 24) est en forme de tube.6) iron according to any one of claims 1 to 5, characterized in that said hollow volume (14, 24) is tube-shaped.
7) Fer à repasser selon l'une quelconque des revendications 1 à 6, caractérisé en ce que ledit volume creux (14, 24) forme une enceinte fermée.7) Iron according to any one of claims 1 to 6, characterized in that said hollow volume (14, 24) forms a closed chamber.
8) Fer à repasser selon la revendication 7, caractérisé en ce que ladite enceinte fermée est remplie d'air.8) Iron according to claim 7, characterized in that said closed chamber is filled with air.
9) Fer à repasser selon l'une quelconque des revendications 1 à 8, caractérisé en ce que le ou lesdits volumes creux représentent au moins 30% du volume de l'écran thermique(10, 20).9) Iron according to any one of claims 1 to 8, characterized in that the said hollow volume or volumes represent at least 30% of the volume of the heat shield (10, 20).
10) Fer à repasser selon l'une quelconque des revendications 1 à 9, caractérisé en ce que l'écran thermique constitue le fond d'un réservoir (8). 10) Iron according to any one of claims 1 to 9, characterized in that the heat shield is the bottom of a tank (8).
PCT/IB2005/003422 2004-11-23 2005-11-10 Iron with an enhanced heat shield WO2006056842A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0412398A FR2878264B1 (en) 2004-11-23 2004-11-23 IRON WITH AN IMPROVED THERMAL SCREEN
FR0412398 2004-11-23

Publications (1)

Publication Number Publication Date
WO2006056842A1 true WO2006056842A1 (en) 2006-06-01

Family

ID=34951274

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2005/003422 WO2006056842A1 (en) 2004-11-23 2005-11-10 Iron with an enhanced heat shield

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FR (1) FR2878264B1 (en)
WO (1) WO2006056842A1 (en)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2333521A (en) * 1941-03-24 1943-11-02 Westinghouse Electric & Mfg Co Sadiron
US2797507A (en) * 1954-08-06 1957-07-02 Maykemper Henry Hand pressing steam iron
US2928194A (en) * 1955-02-24 1960-03-15 Maykemper Henry Plastic shell, handle and tank unit for hand iron
FR2606043A1 (en) * 1986-10-31 1988-05-06 Seb Sa STEAM IRON
FR2770856A1 (en) * 1997-11-10 1999-05-14 Rowenta Werke Gmbh Steam smoothing iron with sectional water reservoir
WO2003011557A1 (en) * 2001-07-30 2003-02-13 Gas Injection, Ltd. Plastic expulsion process by gas injection moulding for forming hollow tubular products
FR2852028A1 (en) * 2003-03-03 2004-09-10 Seb Sa Steam iron contains multi-function component of heat resistant plastic forming thermal screen, part of evaporation chamber and base of water reservoir

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2333521A (en) * 1941-03-24 1943-11-02 Westinghouse Electric & Mfg Co Sadiron
US2797507A (en) * 1954-08-06 1957-07-02 Maykemper Henry Hand pressing steam iron
US2928194A (en) * 1955-02-24 1960-03-15 Maykemper Henry Plastic shell, handle and tank unit for hand iron
FR2606043A1 (en) * 1986-10-31 1988-05-06 Seb Sa STEAM IRON
FR2770856A1 (en) * 1997-11-10 1999-05-14 Rowenta Werke Gmbh Steam smoothing iron with sectional water reservoir
WO2003011557A1 (en) * 2001-07-30 2003-02-13 Gas Injection, Ltd. Plastic expulsion process by gas injection moulding for forming hollow tubular products
FR2852028A1 (en) * 2003-03-03 2004-09-10 Seb Sa Steam iron contains multi-function component of heat resistant plastic forming thermal screen, part of evaporation chamber and base of water reservoir

Also Published As

Publication number Publication date
FR2878264A1 (en) 2006-05-26
FR2878264B1 (en) 2007-02-09

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