WO1989008372A1 - Plate heating component with electrically resistant heating element and process for producing it - Google Patents

Plate heating component with electrically resistant heating element and process for producing it Download PDF

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Publication number
WO1989008372A1
WO1989008372A1 PCT/FR1989/000074 FR8900074W WO8908372A1 WO 1989008372 A1 WO1989008372 A1 WO 1989008372A1 FR 8900074 W FR8900074 W FR 8900074W WO 8908372 A1 WO8908372 A1 WO 8908372A1
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WO
WIPO (PCT)
Prior art keywords
heating
heating element
plate
component according
bosses
Prior art date
Application number
PCT/FR1989/000074
Other languages
French (fr)
Inventor
Bernard Louison
Original Assignee
Seb S.A.
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 Seb S.A. filed Critical Seb S.A.
Publication of WO1989008372A1 publication Critical patent/WO1989008372A1/en

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Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00—Ohmic-resistance heating
    • H05B3/68—Heating arrangements specially adapted for cooking plates or analogous hot-plates
    • 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
    • D06F75/24—Arrangements of the heating means within the iron; Arrangements for distributing, conducting or storing the heat
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00—Ohmic-resistance heating
    • H05B3/20—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater
    • H05B3/22—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater non-flexible
    • H05B3/28—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater non-flexible heating conductor embedded in insulating material
    • H05B3/30—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater non-flexible heating conductor embedded in insulating material on or between metallic plates
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00—Ohmic-resistance heating
    • H05B3/68—Heating arrangements specially adapted for cooking plates or analogous hot-plates
    • H05B3/688—Fabrication of the plates
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00—Ohmic-resistance heating
    • H05B3/68—Heating arrangements specially adapted for cooking plates or analogous hot-plates
    • H05B3/72—Plates of sheet metal

Definitions

  • the present invention relates to a flat heating component, comprising an electrically resistant heating element embedded in an electrically insulating material and comprised between two metal plates.
  • the invention also relates to the method for manufacturing the aforementioned heating component.
  • the heating component targeted by the invention may consist, for example, of the heating soleplate of an iron or by the heating base of a cooking utensil.
  • the iron soles are generally made of molded metal such as aluminum in which is coated an electric heating resistor of tubular shape.
  • this assembly must ensure a plating of the two plates one on the other in such a way that any hot spot is avoided which would risk causing the breakdown of the heating resistance.
  • this plating must be carried out in such a way that the resistant element is protected from external aggressive agents such as steam and humidity.
  • the object of the present invention is to create a flat heating component which is both inexpensive to manufacture and which fulfills the conditions set out above.
  • the invention thus relates to a flat heating component, comprising an electrically resistant heating element coated in an electrically insulating material and between two metal plates.
  • this component is characterized in that the two metal plates are fixed to each other by a series of welds made through gaps made in the heating element and in said insulating material.
  • the two plates are made of laminated metal, preferably of laminated aluminum.
  • the production of the heating component is economical.
  • the welding is carried out by brazing, this brazing being obtained by fusion of a sheet of brazed joint with one and / or the other of the two metal plates.
  • At least one of the plates has bosses engaged in the gaps of the electrically resistant heating element, the welding being carried out between these bosses and
  • At least one of the plates has a projection extending over substantially the entire periphery of the plate, the weld being produced between this projection and the periphery of the other plate. This welding thus makes it possible to seal the component with regard to external aggressive agents such as than steam and humidity.
  • the method for manufacturing a flat heating component according to the invention is characterized by the following steps: - the electric heating element is placed on the plate comprising the bosses, by engaging these bosses in the gaps of the heating element,
  • This operation is carried out without exerting pressure on the plates and preferably under vacuum to avoid any oxidation.
  • FIG. 1 is an exploded sectional view of the three elements of a heating component according to the invention
  • FIG. 2 is a partial plan view of the bottom plate of the heating component
  • FIG. 3 is a sectional view of the assembled heating component
  • FIG. 4 is a view on a larger scale of detail A of FIG. 3 before brazing
  • Figure 5 is a view similar to Figure 4, after soldering.
  • the flat heating component which can constitute the bottom of a heating culinary utensil or an iron soleplate, comprises an electrically resistant heating element 1 comprising a sheet 2 of cut-out resistive metal coated in an electrically insulating material 3 and between two metal plates 4, 5.
  • the two metal plates 4, 5 are fixed to each other (see Figures 3 and 5) by a series of welds 6 produced through gaps 7, 7a made in the resistant heating element 1.
  • the two plates 4, 5 are preferably made of laminated metal and in particular of laminated aluminum.
  • the welds 6 are produced by brazing. This brazing is obtained by melting a brazing sheet 8 co-laminated with one and / or the other of the two metal plates 4, 5.
  • the plate 5 In the case shown, it is the plate 5.
  • the lower plate 5 has bosses 9, 9a engaged in the gaps 7, 7a of the electrically resistant heating element 1.
  • the welds 6 are produced between these bosses 9, 9a and the surface 4a of the other plate 4 which is perfectly flat.
  • the plate 5 has a projection 10 extending over substantially the entire periphery of the plate, the weld being produced between this projection 10 and the periphery 4b of the another plate 4.
  • This projection 10 extends over the entire periphery of the plate 5, with the exception of a zone of small extent provided for the passage of the electrical connections 12, 13 of the heating element. The sealing of this zone is obtained by other means not shown.
  • the resistive metal sheet 2 of the heating element 1 is for example covered by two sheets of fibrous material such as paper impregnated with phenolic or silicone resin, the connection between these sheets of fibrous material and the metal sheet being produced by heating to polymerize the resin.
  • the bosses 9, 9a can be obtained by semi-cutting the plate 5 by means of punches applied to the face of the plate opposite to that where it is desired to make the bosses. This is what explains the presence of cavities 11, li on this opposite face, in line with the bosses 9, 9a.
  • the procedure is as follows: - the electric heating element 1 is placed on the plate 5 comprising the bosses 9, 9a, 10 by engaging these bosses in the gaps 7 , 7a of the heating element 1, - the second plate 4 is placed on the heating element 1, - the assembly is heated to obtain the fusion of the solder layer 8.
  • the heating of the assembly is carried out in a vacuum chamber (on the order of 10 -8 Torr to prevent oxidation.
  • a vacuum chamber on the order of 10 -8 Torr to prevent oxidation.
  • the brazed sheet 8 laminated to the plate 5 can be made of an aluminum-silicon alloy as sold under the reference 4104 by the company Pechiney.
  • This sheet of solder 8 has a melting point of the order of 577 ° C which is lower than that of the alloy constituting the plates 4, 5.
  • the surface tensions tend to bring the plates 4, 5 close together.
  • the atmospheric pressure exerted on the external surfaces of the plates 4, 5 tends to oppose any deformation of the latter. In any case, such deformations are avoided due to the homogeneity of the component obtained.
  • the invention is not limited to the embodiment which has just been described and many modifications can be made to it without departing from the scope of the invention.
  • solder between the plates 4, 5 can also be produced by means of solder pads deposited on the bosses 9, 9a and the projection 10.
  • the plates 4, 5 could also be made of mild steel, stainless steel, copper, brass, etc. provided that the solder is suitable for these metals or alloys.
  • other welding methods could be used. We can cite on this subject:

Abstract

A flat heating component comprises an electrically resistant heating element (1) coated with an electrically isolating material and included between two metallic plates (4, 5). The two metallic plates (4, 5) are attached to each other by a series of welds (6) made through holes (7) provided in the heating element (1). Utilisation in particular for making electrically heating bases of cooking utensils or heating soles of irons.

Description

Composant chauffant plat à élément chauffant électriquement résistant et son procédé de fabrication. Flat heating component with electrically resistant heating element and method of manufacturing the same.
1 La présente invention concerne un composant chauffant plat, comprenant un élément chauffant électriquement résistant enrobé dans une matière électriquement isolante et compris entre deux plaques métalliques. L'invention vise également le procédé pour la fabrication du composant chauffant précité.1 The present invention relates to a flat heating component, comprising an electrically resistant heating element embedded in an electrically insulating material and comprised between two metal plates. The invention also relates to the method for manufacturing the aforementioned heating component.
Le composant chauffant visé par l'invention peut être constitué par exemple par la semelle chauffante d'un fer à repasser ou par le fond chauffant d'un ustensile de cuisson. Les semelles de fer à repasser sont généralement en métal moulé tel que de 1'aluminium dans lequel est enrobé une résistance chauffante électrique de forme tubulaire.The heating component targeted by the invention may consist, for example, of the heating soleplate of an iron or by the heating base of a cooking utensil. The iron soles are generally made of molded metal such as aluminum in which is coated an electric heating resistor of tubular shape.
De telles semelles de fer en métal moulé sont onéreuses. On a tenté de réaliser des composants chauffants plats constitués par deux plaques métalliques entre lesquelles est intercalé un élément électriquement résistant plat enrobé dans une matière isolante.Such molded metal iron soles are expensive. Attempts have been made to produce flat heating components consisting of two metal plates between which is inserted an electrically resistant flat element coated in an insulating material.
Ces plaques métalliques sont assemblées ensemble par rivetage ou vissage. Un tel mode d'assemblage est coûteux.These metal plates are assembled together by riveting or screwing. Such an assembly method is expensive.
Par ailleurs, l'assemblage de telles plaques métalliques pose des difficultés techniques qui n'ont pas été résolues d'une manière satisfaisante.Furthermore, the assembly of such metal plates poses technical difficulties which have not been satisfactorily resolved.
En effet, cet assemblage doit assurer un placage des deux plaques l'une sur l'autre d'une manière telle que l'on évite tout point chaud qui risquerait d'entraîner le claquage de la résistance chauffante.Indeed, this assembly must ensure a plating of the two plates one on the other in such a way that any hot spot is avoided which would risk causing the breakdown of the heating resistance.
Par ailleurs, ce placage doit être exécuté d'une manière telle que l'élément résistant soit à l'abri des agents agressifs extérieurs tels que la vapeur et l'humidité.Furthermore, this plating must be carried out in such a way that the resistant element is protected from external aggressive agents such as steam and humidity.
Le but de la présente invention est de créer un composant chauffant plat qui soit à la fois peu coûteux à fabriquer et qui remplisse les conditions exposées ci-dessus. L'invention vise ainsi un composant chauffant plat, comprenant un élément chauffant électriquement résistant enrobé dans une matière électriquement isolante et compris entre deux plaques métalliques.The object of the present invention is to create a flat heating component which is both inexpensive to manufacture and which fulfills the conditions set out above. The invention thus relates to a flat heating component, comprising an electrically resistant heating element coated in an electrically insulating material and between two metal plates.
Suivant l'invention, ce composant est caractérisé e ce que les deux plaques métalliques sont fixées l'une à l'autre par une série de soudures réalisées au travers de lacunes pratiquées dans l'élément chauffant et dans ladite matière isolante.According to the invention, this component is characterized in that the two metal plates are fixed to each other by a series of welds made through gaps made in the heating element and in said insulating material.
Ces soudures réalisées entre les deux plaques au travers de lacunes pratiquées dans l'élément chauffant, permettent d'obtenir une parfaite continuité thermique entre les deux plaques, de sorte que tout risque de claquage de l'élément résistant dû à des points chauds est évité.These welds made between the two plates through gaps made in the heating element, make it possible to obtain perfect thermal continuity between the two plates, so that any risk of breakdown of the resistant element due to hot spots is avoided. .
Selon une version avantageuse de l'invention, les deux plaques sont en métal laminé, de préférence en aluminium laminé.According to an advantageous version of the invention, the two plates are made of laminated metal, preferably of laminated aluminum.
Grâce à l'utilisation d'un métal laminé, la réalisation du composant chauffant est économique.Thanks to the use of a laminated metal, the production of the heating component is economical.
Selon une version préférée de l'invention, la soudure est réalisée par brasage, ce brasage étant obtenu par fusion d'une feuille de brasure colaminée avec l'une et/ou l'autre des deux plaques métalliques.According to a preferred version of the invention, the welding is carried out by brazing, this brazing being obtained by fusion of a sheet of brazed joint with one and / or the other of the two metal plates.
Pour réaliser le brasage, il suffit ainsi de chauffer l'ensemble jusqu'à la température de fusion de la feuille de brasure colaminée. Selon un mode de réalisation avantageux de l'invention, l'une au moins des plaques présente des bossages engagés dans les lacunes de l'élément chauffant électriquemen résistant, la soudure étant réalisée entre ces bossages etTo achieve soldering, it is sufficient to heat the assembly to the melting temperature of the colaminated solder sheet. According to an advantageous embodiment of the invention, at least one of the plates has bosses engaged in the gaps of the electrically resistant heating element, the welding being carried out between these bosses and
1' utre plaque. Selon un autre mode de réalisation avantageux de l'invention, l'une au moins des plaques présente une saillie s'étendant sur sensiblement toute la périphérie de la plaque, la soudure étant réalisée entre cette saillie et la périphéri de l'autre plaque. Cette soudure permet ainsi de réaliser l'étanchéité du composant à l'égard des agents agressifs extérieurs tels que vapeur et humidité.1 other plate. According to another advantageous embodiment of the invention, at least one of the plates has a projection extending over substantially the entire periphery of the plate, the weld being produced between this projection and the periphery of the other plate. This welding thus makes it possible to seal the component with regard to external aggressive agents such as than steam and humidity.
Selon un autre aspect de l'invention, le procédé pour la fabrication d'un composant chauffant plat conforme à l'invention est caractérisé par les étapes suivantes : - on dispose l'élément chauffant électrique sur la plaque comportant les bossages, en engageant ces bossages dan les lacunes de l'élément chauffant,According to another aspect of the invention, the method for manufacturing a flat heating component according to the invention is characterized by the following steps: - the electric heating element is placed on the plate comprising the bosses, by engaging these bosses in the gaps of the heating element,
- on pose la seconde plaque sur l'élément chauffant- the second plate is placed on the heating element
- on chauffe l'ensemble pour obtenir la fusion de l brasure.- The whole is heated to obtain the fusion of the solder.
Cette opération est réalisée sans exercer de pression sur les plaques et de préférence sous vide pour éviter toute oxydation.This operation is carried out without exerting pressure on the plates and preferably under vacuum to avoid any oxidation.
D'autres particularités et avantages de l'invention apparaîtront encore dans la description ci-après.Other features and advantages of the invention will appear in the description below.
AUX dessins annexés donnés à titre d'exemples non limitatifs :TO the accompanying drawings given by way of nonlimiting examples:
- la figure 1 est une vue éclatée en coupe des troi éléments d'un composant chauffant conforme à l'invention, - la figure 2 est une vue en plan partielle de la plaque inférieure du composant chauffant,- Figure 1 is an exploded sectional view of the three elements of a heating component according to the invention, - Figure 2 is a partial plan view of the bottom plate of the heating component,
- la figure 3 est une vue en coupe du composant chauffant assemblé,FIG. 3 is a sectional view of the assembled heating component,
- la figure 4 est une vue à plus grande échelle du détail A de la figure 3 avant brasage,FIG. 4 is a view on a larger scale of detail A of FIG. 3 before brazing,
- la figure 5 est une vue analogue à la figure 4, après brasage.- Figure 5 is a view similar to Figure 4, after soldering.
Dans la réalisation des figures annexées, le composant chauffant plat, pouvant constituer le fond d'un ustensile culinaire chauffant ou une semelle de fer à repasse comprend un élément chauffant électriquement résistant 1 comportant une feuille 2 en métal résistif découpé enrobée dans une matière électriquement isolante 3 et compris entre deux plaques métalliques 4, 5. Conformément à l'invention, les deux plaques métalliques 4, 5 sont fixées l'une à l'autre (voir figures 3 et 5) par une série de soudures 6 réalisées au travers de lacunes 7, 7a pratiquées dans l'élément chauffant résistant 1.In the embodiment of the appended figures, the flat heating component, which can constitute the bottom of a heating culinary utensil or an iron soleplate, comprises an electrically resistant heating element 1 comprising a sheet 2 of cut-out resistive metal coated in an electrically insulating material 3 and between two metal plates 4, 5. According to the invention, the two metal plates 4, 5 are fixed to each other (see Figures 3 and 5) by a series of welds 6 produced through gaps 7, 7a made in the resistant heating element 1.
Les deux plaques 4, 5 sont de préférence en métal laminé et en particulier en aluminium laminé. Dans la réalisation représentée, les soudures 6 son réalisées par brasage. Ce brasage est obtenu par fusion d'une feuille de brasure 8 colaminée avec l'une et/ou l'autre des deux plaques métalliques 4, 5.The two plates 4, 5 are preferably made of laminated metal and in particular of laminated aluminum. In the embodiment shown, the welds 6 are produced by brazing. This brazing is obtained by melting a brazing sheet 8 co-laminated with one and / or the other of the two metal plates 4, 5.
Dans le cas représenté, il s'agit de la plaque 5. La plaque inférieure 5 présente des bossages 9, 9a engagés dans les lacunes 7, 7a de l'élément chauffant électriquement résistant 1. Les soudures 6 sont réalisées entre ces bossages 9, 9a et la surface 4a de l'autre plaque 4 qui est parfaitement plane. Par ailleurs, comme on le voit sur les figures 1, 2 et 3, la plaque 5 présente une saillie 10 s'étendant sur sensiblement toute la périphérie de la plaque, la soudure étant réalisée entre cette saillie 10 et la périphérie 4b de l'autre plaque 4. Cette saillie 10 s'étend sur toute la périphérie de la plaque 5, à l'exception d'une zone de faible étendue prévu pour le passage des connexions électriques 12, 13 de l'élémen chauffant. L'étanchéité de cette zone est obtenue par d'autre moyens non représentés. La feuille 2 de métal résistif de l'élément chauffant 1 est par exemple recouverte par deux feuilles de matière fibreuse telle que du papier imprégné de résine phénolique ou silicone, la liaison entre ces feuilles de matière fibreuse et la feuille de métal étant réalisée par chauffage pour assurer la polymérisation de la résine.In the case shown, it is the plate 5. The lower plate 5 has bosses 9, 9a engaged in the gaps 7, 7a of the electrically resistant heating element 1. The welds 6 are produced between these bosses 9, 9a and the surface 4a of the other plate 4 which is perfectly flat. Furthermore, as can be seen in FIGS. 1, 2 and 3, the plate 5 has a projection 10 extending over substantially the entire periphery of the plate, the weld being produced between this projection 10 and the periphery 4b of the another plate 4. This projection 10 extends over the entire periphery of the plate 5, with the exception of a zone of small extent provided for the passage of the electrical connections 12, 13 of the heating element. The sealing of this zone is obtained by other means not shown. The resistive metal sheet 2 of the heating element 1 is for example covered by two sheets of fibrous material such as paper impregnated with phenolic or silicone resin, the connection between these sheets of fibrous material and the metal sheet being produced by heating to polymerize the resin.
Toutefois d'autres matières électriquement isolante peuvent convenir pourvu qu'elles résistent à la température d fusion de la brasure.However, other electrically insulating materials may be suitable provided that they resist the melting temperature of the solder.
Les bossages 9, 9a peuvent être obtenus par semi- découpage de la plaque 5 au moyen de poinçons appliqués sur l face de la plaque opposée à celle où l'on veut réaliser les bossages. C'est ce qui explique la présence de cavités 11, li sur cette face opposée, au droit des bossages 9, 9a.The bosses 9, 9a can be obtained by semi-cutting the plate 5 by means of punches applied to the face of the plate opposite to that where it is desired to make the bosses. This is what explains the presence of cavities 11, li on this opposite face, in line with the bosses 9, 9a.
Pour fabriquer le composant chauffant plat que 1'on vient de décrire, on procède de la façon suivante : - on dispose l'élément chauffant électrique 1 sur l plaque 5 comportant les bossages 9, 9a, 10 en engageant ces bossages dans les lacunes 7, 7a de l'élément chauffant 1, - on pose la seconde plaque 4 sur l'élément chauffant 1, - on chauffe l'ensemble pour obtenir la fusion de l couche de brasure 8.To manufacture the flat heating component that has just been described, the procedure is as follows: - the electric heating element 1 is placed on the plate 5 comprising the bosses 9, 9a, 10 by engaging these bosses in the gaps 7 , 7a of the heating element 1, - the second plate 4 is placed on the heating element 1, - the assembly is heated to obtain the fusion of the solder layer 8.
De préférence, le chauffage de l'ensemble est réalisé dans une enceinte sous vide (de l'ordre de 10-8 torrs afin d'éviter toute oxydation. A titre d'exemple non limitatif, les deux plaques 4Preferably, the heating of the assembly is carried out in a vacuum chamber (on the order of 10 -8 Torr to prevent oxidation. By way of nonlimiting example, the two plates 4
5 sont en alliage d'aluminium laminé commercialisé sous la référence 3003 par la société PECHINEY.5 are made of laminated aluminum alloy sold under the reference 3003 by the company Pechiney.
La feuille de brasure 8 colaminée sur la plaque 5 peut être en alliage aluminium-silicium tel que commercialisé sous la référence 4104 par la société PECHINEY. Cette feuille de brasure 8 a un point de fusion de l'ordre de 577°C qui est inférieur à celui de l'alliage constituant les plaques 4, 5. Lors de la f sion de la couche de brasure 8 , les tensions superficielles tendent à rapprocher énergiquement le plaques 4, 5. Après refroidissement, la pression atmosphériqu s'exerçant sur les surfaces extérieures des plaques 4, 5 tend à s'opposer à toute déformation de celles-ci. De toute façon, de telles déformations sont évitées du fait de l'homogénéité du composant obtenu. Bien entendu, l'invention n'est pas limitée à l'exemple de réalisation que l'on vient de décrire et on peut apporter à celui-ci de nombreuses modifications sans sortir d cadre de l'invention.The brazed sheet 8 laminated to the plate 5 can be made of an aluminum-silicon alloy as sold under the reference 4104 by the company Pechiney. This sheet of solder 8 has a melting point of the order of 577 ° C which is lower than that of the alloy constituting the plates 4, 5. During the f sion of the solder layer 8, the surface tensions tend to bring the plates 4, 5 close together. After cooling, the atmospheric pressure exerted on the external surfaces of the plates 4, 5 tends to oppose any deformation of the latter. In any case, such deformations are avoided due to the homogeneity of the component obtained. Of course, the invention is not limited to the embodiment which has just been described and many modifications can be made to it without departing from the scope of the invention.
Ainsi, la brasure entre les plaques 4, 5 peut également être réalisée au moyen de pastilles de brasure déposées sur les bossages 9, 9a et la saillie 10. Les plaques 4, 5 pourraient également être réalisée en acier doux, acier inoxydable, cuivre, laiton, etc. pourvu que la brasure soit adaptée à ces métaux ou alliages. Par ailleurs, d'autres procédés de soudage pourraient être utilisés. On peut citer à ce sujet :Thus, the solder between the plates 4, 5 can also be produced by means of solder pads deposited on the bosses 9, 9a and the projection 10. The plates 4, 5 could also be made of mild steel, stainless steel, copper, brass, etc. provided that the solder is suitable for these metals or alloys. Furthermore, other welding methods could be used. We can cite on this subject:
- la soudure par friction qui présente l'avantage d permettre une liaison simultanée en tout point des matières e contact, sans élévation notable de la température. Cependant, elle a l'inconvénient de soumettre l'élément chauffant à un sévère régime de vibration ;- friction welding, which has the advantage of allowing simultaneous connection at all points of the contact materials, without appreciable rise in temperature. However, it has the disadvantage of subjecting the heating element to a severe vibration regime;
- la soudure au laser ou la soudure par bombardemen électronique : ces deux types de soudure donnent de bons résultats : elles ont l'avantage de pouvoir être limitées à des zones précises, soit ponctuelles, soit linéaires ; - la soudure par ultra-sons qui est plutôt réservée à des blindages réalisés en matière thermoplastique, et aux éléments chauffants à basse température. - laser welding or electron bombardment welding: these two types of welding give good results: they have the advantage of being able to be limited to precise zones, either punctual or linear; - ultrasonic welding which is rather reserved for shields made of thermoplastic material, and heating elements at low temperature.

Claims

REVENDICATIONS 1. Composant chauffant plat, comprenant un élément chauffant électriquement résistant (1) enrobé dans une matièr électriquement isolante et compris entre deux plaques métalliques (4, 5), caractérisé en ce que les deux plaques métalliques (4, 5) sont fixées l'une à l'autre par une série de soudures (6) réalisées au travers de lacunes (7) pratiquée dans l'élément chauffant (1) et dans ladite matière électriquement isolante. CLAIMS 1. Flat heating component, comprising an electrically resistant heating element (1) embedded in an electrically insulating material and comprised between two metal plates (4, 5), characterized in that the two metal plates (4, 5) are fixed l 'to one another by a series of welds (6) made through gaps (7) formed in the heating element (1) and in said electrically insulating material.
2. Composant conforme à la revendication 1, caractérisé en ce que les deux plaques (4, 5) sont en métal laminé.2. Component according to claim 1, characterized in that the two plates (4, 5) are made of laminated metal.
3. Composant conforme à l'une des revendications 1 ou 2, caractérisé en ce que la soudure (6) est réalisée par brasage, ce brasage étant obtenu par fusion d'une feuille de brasure (8) colaminée avec l'une et/ou l'autre des deux plaques métalliques (4, 5).3. Component according to one of claims 1 or 2, characterized in that the weld (6) is produced by brazing, this brazing being obtained by melting a brazing sheet (8) co-laminated with one and / or the other of the two metal plates (4, 5).
4. Composant conforme à l'une des revendications 1 3, caractérisé en ce que l'une (5) au moins des plaques présente des bossages (9, 9a) engagés dans les lacunes (7, 7a de l'élément chauffant électriquement résistant (1), la soudure (6) étant réalisée entre ces bossages (9, 9a) et l'autre plaque (4).4. Component according to one of claims 1 3, characterized in that at least one (5) of the plates has bosses (9, 9a) engaged in the gaps (7, 7a of the electrically resistant heating element (1), the weld (6) being produced between these bosses (9, 9a) and the other plate (4).
5. Composant conforme à l'une des revendications 1 4, caractérisé en ce que l'une (5) au moins des plaques présente une saillie (10) s'étendant sur sensiblement toute l périphérie de la plaque, la soudure étant réalisée entre cett saillie (10) et la périphérie de l'autre plaque (4).5. Component according to one of claims 1 4, characterized in that at least one (5) of the plates has a projection (10) extending over substantially the entire periphery of the plate, the welding being carried out between this projection (10) and the periphery of the other plate (4).
6. Composant conforme à l'une des revendications 1 5, caractérisé en ce que l'élément chauffant électriquement résistant (1) est constitué par une feuille (2) de métal résistif découpé, recouvert sur ses deux faces par une feuill de matière isolante (3) résistant à la température de fusion de la brasure. 6. Component according to one of claims 1 5, characterized in that the electrically resistant heating element (1) consists of a sheet (2) of cut resistive metal, covered on both sides by a sheet of insulating material (3) resistant to the melting temperature of the solder.
7. Composant conforme à la revendication 6, caractérisé en ce que la feuille (2) de métal résistif est recouverte par deux feuilles de matière fibreuse imprégnée de résine, la liaison entre ces feuilles de matière fibreuse et la feuille de métal étant réalisée par chauffage pour assurer la polymérisation de la résine. 7. Component according to claim 6, characterized in that the sheet (2) of resistive metal is covered by two sheets of fibrous material impregnated with resin, the connection between these sheets of fibrous material and the metal sheet being produced by heating to ensure the polymerization of the resin.
8. Composant conforme à l'une des revendications 4 à8. Component according to one of claims 4 to
7, caractérisé en ce que les bossages (9, 9a) sont obtenus par semi-découpage de la plaque (5) au moyen de poinçons appliqués sur la face de la plaque opposée à celle où l'on veut réaliser les bossages. 7, characterized in that the bosses (9, 9a) are obtained by semi-cutting of the plate (5) by means of punches applied to the face of the plate opposite to that where one wants to make the bosses.
9. Composant chauffant, conforme à l'une des revendications 1 à 8, caractérisé en ce qu'il constitue la semelle chauffante d'un fer à repasser.9. Heating component according to one of claims 1 to 8, characterized in that it constitutes the heating soleplate of an iron.
10. Composant chauffant conforme à l'une des revendications 1 à 8, caractérisé en ce qu'il constitue le fond chauffant d'un ustensile de cuisson.10. Heating component according to one of claims 1 to 8, characterized in that it constitutes the heating base of a cooking utensil.
11. Procédé pour la fabrication d'un composant chauffant plat conforme à l'une des revendications 4 à 8, caractérisé par les étape suivantes :11. Method for manufacturing a flat heating component according to one of claims 4 to 8, characterized by the following steps:
- on dispose l'élément chauffant électrique (1) sur la plaque (5) comportant les bossages (9, 9a), en engageant ces bossages dans les lacunes (7) de l'élément chauffant (1),- the electric heating element (1) is placed on the plate (5) comprising the bosses (9, 9a), by engaging these bosses in the gaps (7) of the heating element (1),
- on pose la seconde plaque (4) sur l'élément chauffant (1) ,- the second plate (4) is placed on the heating element (1),
- on chauffe l'ensemble pour obtenir la fusion de la brasure (8) . -*- The assembly is heated to obtain the fusion of the solder (8). - *
12. Procédé conforme à la revendication 11, caractérisé en ce que le chauffage de l'ensemble est réalisé dans une enceinte sous vide. 12. Method according to claim 11, characterized in that the heating of the assembly is carried out in a vacuum enclosure.
PCT/FR1989/000074 1988-03-02 1989-02-24 Plate heating component with electrically resistant heating element and process for producing it WO1989008372A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR88/02625 1988-03-02
FR8802625A FR2628283B1 (en) 1988-03-02 1988-03-02 FLAT HEATING COMPONENT WITH ELECTRICALLY RESISTANT HEATING ELEMENT AND MANUFACTURING METHOD THEREOF

Publications (1)

Publication Number Publication Date
WO1989008372A1 true WO1989008372A1 (en) 1989-09-08

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PCT/FR1989/000074 WO1989008372A1 (en) 1988-03-02 1989-02-24 Plate heating component with electrically resistant heating element and process for producing it

Country Status (7)

Country Link
EP (1) EP0331565A1 (en)
JP (1) JPH02503493A (en)
DE (1) DE331565T1 (en)
ES (1) ES2011606A4 (en)
FR (1) FR2628283B1 (en)
GR (1) GR890300178T1 (en)
WO (1) WO1989008372A1 (en)

Cited By (2)

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Publication number Priority date Publication date Assignee Title
EP3246459A1 (en) * 2016-05-17 2017-11-22 Rowenta Werke GmbH Steam iron comprising a heating body provided with a vaporisation chamber and an ironing surface in thermal connection with the heating body
US11122781B2 (en) * 2016-06-01 2021-09-21 Bee Hive Thermal Industries, Llc Heater-equipped man-made beehive, and method for controlling invasive pests in a man-made beehive

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Publication number Priority date Publication date Assignee Title
FR2641291B1 (en) * 1989-01-04 1991-03-22 Seb Sa
FR2686761B1 (en) * 1992-01-24 1994-05-27 Seb Sa HEATING ELEMENT WITH SANDWICH STRUCTURE AND HOUSEHOLD IRON TYPE IRONING APPLIANCE COMPRISING SUCH AN ELEMENT.
US5444228A (en) * 1992-05-27 1995-08-22 Seb S.A. Flat, flexible heating element with integrated connector
CN1965123A (en) * 2004-06-02 2007-05-16 皇家飞利浦电子股份有限公司 Steam generator having at least one spiral-shaped steam channel and at least one flat resistive heating element

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US2101098A (en) * 1934-10-12 1937-12-07 Westinghouse Electric & Mfg Co Method of making electric heating units and resultant product
US2636106A (en) * 1948-12-31 1953-04-21 Birtman Electric Co Heating element
US3213522A (en) * 1959-09-17 1965-10-26 Gen Motors Corp Domestic appliance
DE2151860A1 (en) * 1970-10-28 1972-05-10 Soernewitz Elektrowaerme Veb Attachment of the tubular heater to the base plate of the iron
FR2252725A1 (en) * 1973-11-28 1975-06-20 Gen Electric
DE2616287A1 (en) * 1976-04-13 1977-10-27 Baumgartner IRON WITH A SOLE BODY MADE AT LEAST PARTLY OF GLASS MATERIAL
EP0111445A1 (en) * 1982-12-08 1984-06-20 Jura Elektroapparate-Fabriken L. Henzirohs AG Heating device and method of manufacturing the same
EP0202969A1 (en) * 1985-04-19 1986-11-26 Seb S.A. Flat heating element with electrical resistance, and article equipped with such an element

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Publication number Priority date Publication date Assignee Title
US2101098A (en) * 1934-10-12 1937-12-07 Westinghouse Electric & Mfg Co Method of making electric heating units and resultant product
US2636106A (en) * 1948-12-31 1953-04-21 Birtman Electric Co Heating element
US3213522A (en) * 1959-09-17 1965-10-26 Gen Motors Corp Domestic appliance
DE2151860A1 (en) * 1970-10-28 1972-05-10 Soernewitz Elektrowaerme Veb Attachment of the tubular heater to the base plate of the iron
FR2252725A1 (en) * 1973-11-28 1975-06-20 Gen Electric
DE2616287A1 (en) * 1976-04-13 1977-10-27 Baumgartner IRON WITH A SOLE BODY MADE AT LEAST PARTLY OF GLASS MATERIAL
EP0111445A1 (en) * 1982-12-08 1984-06-20 Jura Elektroapparate-Fabriken L. Henzirohs AG Heating device and method of manufacturing the same
EP0202969A1 (en) * 1985-04-19 1986-11-26 Seb S.A. Flat heating element with electrical resistance, and article equipped with such an element

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3246459A1 (en) * 2016-05-17 2017-11-22 Rowenta Werke GmbH Steam iron comprising a heating body provided with a vaporisation chamber and an ironing surface in thermal connection with the heating body
US10358764B2 (en) 2016-05-17 2019-07-23 Rowenta Werke Gmbh Steam iron comprising a heating body provided with a steam chamber and an ironing surface thermally connected to the heating body
US11122781B2 (en) * 2016-06-01 2021-09-21 Bee Hive Thermal Industries, Llc Heater-equipped man-made beehive, and method for controlling invasive pests in a man-made beehive

Also Published As

Publication number Publication date
JPH02503493A (en) 1990-10-18
ES2011606A4 (en) 1990-02-01
EP0331565A1 (en) 1989-09-06
GR890300178T1 (en) 1990-10-31
FR2628283B1 (en) 1996-04-19
DE331565T1 (en) 1990-02-08
FR2628283A1 (en) 1989-09-08

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