EP0739153B1 - Heating element brazed onto a support - Google Patents
Heating element brazed onto a support Download PDFInfo
- Publication number
- EP0739153B1 EP0739153B1 EP19960420137 EP96420137A EP0739153B1 EP 0739153 B1 EP0739153 B1 EP 0739153B1 EP 19960420137 EP19960420137 EP 19960420137 EP 96420137 A EP96420137 A EP 96420137A EP 0739153 B1 EP0739153 B1 EP 0739153B1
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- EP
- European Patent Office
- Prior art keywords
- metal
- assembly according
- metal support
- support
- tube
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Revoked
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Classifications
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- 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
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- 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
- H05B3/40—Heating elements having the shape of rods or tubes
- H05B3/42—Heating elements having the shape of rods or tubes non-flexible
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- 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
- H05B3/40—Heating elements having the shape of rods or tubes
- H05B3/42—Heating elements having the shape of rods or tubes non-flexible
- H05B3/48—Heating elements having the shape of rods or tubes non-flexible heating conductor embedded in insulating material
- H05B3/50—Heating elements having the shape of rods or tubes non-flexible heating conductor embedded in insulating material heating conductor arranged in metal tubes, the radiating surface having heat-conducting fins
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- 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
- H05B2203/00—Aspects relating to Ohmic resistive heating covered by group H05B3/00
- H05B2203/021—Heaters specially adapted for heating liquids
Definitions
- the present invention relates to the field of heating assemblies intended to be mounted in all types of electrical apparatus.
- the current The invention relates more particularly to heating assemblies used in all types of household appliances.
- the present invention relates to also the arrangement and fixing of armored heating elements in Appliances.
- heating assemblies consisting of an element armored heater fixed via a brazing operation on a metal support, such assemblies are made exclusively with metals identical with similar physico-chemical properties, so that not to generate differential expansion detrimental to their mechanical strength in time.
- Known heating assemblies are therefore tainted with a price of is important, especially when the use of noble metals of the stainless metal type is essential.
- the object of the present invention therefore consists in making assemblies on the one hand, and not having the drawbacks of the prior art, and having good mechanical strength over time on the other hand.
- Another object of the present invention is to provide heating assemblies with innumerable mechanical and thermal properties, as well as wide range of possibilities for adaptation or transformation of said set heating.
- a heating assembly comprising at least one shielded heating element comprising a metal tube fixed on at least one metal support using a fusible metal layer characterized in that the material of the metal tube is different from the constituent material of the metal support.
- the objects of the present invention are also achieved using a method assembly of a heating assembly, consisting in intimately bonding at least one shielded heating element comprising a metal tube with a metal support using a layer of soldering, characterized in that it consists in carrying out a soldering operation for different constituent materials of the metal tube of the element armored heater on the one hand and metal support on the other.
- Figure 1 shows a sectional view of the assembly of a heating element shielded 1, a metal support 3 and a fusible metal layer allowing to make a rigid connection.
- the shielded heating element 1 made so known, consists of a metal tube inside which are arranged a resistive filament and an electrical insulating powder of the magnesia type.
- the element heater 1 is advantageously deformed to present a flat part intended to come into contact with the metallic support 3.
- the constituent material of the metal tube of the shielded heating element 1 is, according to the invention, different of the material constituting the metal support 3. The latter is preferably brazed directly on the metal support 3 according to an alternative embodiment of the invention.
- the fusible metal layer is preferably a layer of solder 2 deposited on at least one of the elements constituting said heating assembly.
- the brazing layer 2, providing the interface between the metal support 3 and the shielded heating element 1 is advantageously made of a powder metallic, thermal conductive and a suitable stripper.
- Part 1a crushed or flat shielded heating element 1 increases the surface of contact between the metal support 3 and said shielded heating element 1.
- the heating assembly according to the invention comprises at least one layer of solder 2 deposited by any means on at least one of the constituent elements of said heating assembly.
- the metal tube of the element armored heater 1 and the metal support 3 are respectively made of aluminum and stainless steel.
- the metal tube of the shielded heating element 1 is in stainless metal and the metal support 3 is aluminum, or any other thermal conductive material capable of being bonded to said heating element shielded 1 by brazing.
- the metal support 3 can also consist of at least at least two metal plates assembled by any means and in particular by brazing. Such an assembly can be carried out simultaneously with the operation of brazing of the shielded heating element 1 on the metal support 3. It is also possible to assemble by brazing, in accordance with the invention, the shielded heating element 1 and the metal support 3, which are produced respectively copper and stainless metal or copper and aluminum.
- FIG. 2 represents a heating assembly according to the invention comprising a metal plate 3a diffusing thermal energy, on the one hand disposed between the shielded heating element 1 and the metal support 3, and on the other hand secured with said shielded heating element 1 and said metal support 3 by brazing layers 2.
- the material of the plate diffusing metallic 3a makes it possible to obtain, depending on the material considered, a gradient temperature between the metal support 3 and the shielded heating element 1.
- the metal plate 3a is, for example, made of aluminum or copper or in another material for diffusing thermal energy.
- the plaque metallic 3a can also, according to another alternative embodiment of the sub-assembly heater according to the invention, be made of a material identical or similar to the material of the shielded heating element 1 or the metal support 3.
- the temperature gradient that can be obtained with a metal support 3 made with a suitable material is particularly interesting, when said metal support 3, fixed or maintained by a frame, made of plastic material that cannot withstand high temperatures.
- the metal support 3 can thus play the role of thermal brake.
- the plaque metallic 3a can also be used in various applications for the assembly heating. It is thus possible to increase the thickness, and consequently the mechanical rigidity of the heating assembly thus produced and constitute, for example a thermal diffusing base for a pressure cooker, a fryer or any other appliance.
- the metal support 3 is preferably made in a stainless metallic material or any other noble metal when it is brought into contact with food items intended to be cooked or heated. This is particularly the case with electric kettles or possibly electric coffee makers.
- a metal support 3 made of a stainless metal delays scaling and facilitates the operations of mechanical cleaning and allows chemical cleaning.
- a steel alloy stainless steel may also be suitable for making the metal support 3.
- Figure 3 shows another alternative embodiment of the heating assembly according to the invention, which comprises a metal circulation tube 5 capable of transporting a fluid, said circulation tube 5 being intimately linked said heating assembly.
- the circulation tube 5 advantageously has a circular section and a straight, U-shaped or horseshoe shape. Another configuration matching the shape or configuration of the element on which it is reported is also possible.
- Figure 3 shows a sectional view of such a heating assembly according to the invention.
- the circulation tube 5 is soldered directly to the shielded heating element 1. This is particularly the case for twin-tube boilers for coffee machines or machines vending machines for hot drinks or steam.
- Such heating assemblies for example consist of an armored heating element 1 made of aluminum and a circulation tube 5 made for example of steel or stainless metal.
- the shielded heating element 1 has, for this purpose, a deformation conforming to the at least partially the configuration or the external shape of the circulation tube 5, so as to achieve a large contact surface between the element armored heater 1 and circulation tube 5.
- Solder layer 2 is used as a connection interface between the shielded heating element 1 and the circulation 5.
- Such a heating assembly can also, according to another variant according to the invention, be made up of an armored heating element 1 in aluminum, brazed on the circulation tube 5 also made of aluminum, the metal support 3 being produced for example from a metal stainless. The latter is for example fixed on the assembly thus constituted by a brazing operation. The mechanical rigidity of the heating assembly according to the invention is thus ensured at least partially by soldering operations.
- circulation tube 5 can also be brazed either on the plate diffusing metallic 3a, either directly on the metallic support 3.
- the heating assembly produced in accordance with the invention is therefore obtained from of a manufacturing process consisting in intimately linking at least one element armored heater 1 with a metal support 3 using a layer of brazing 2.
- This assembly process also consists in carrying out a brazing operation for different constituent materials of the tube of the shielded heating element 1 on the one hand, and of the metal support 3 on the other hand.
- the process according to the invention consists in depositing the brazing layer 2 on at least one part of the heater assembly prior to the assembly operation of said parts. These are constituted for example by the metal support 3 and by the heating element shielded 1.
- the latter can advantageously be deformed using an operation forging for example, to present a large contact surface with the metal support 3 on which it will be added during the assembly of the heating assembly according to the invention.
- the brazing layer 2 allows make a mechanical connection after a cooking or steaming operation.
- the advantage of the heating assembly according to the invention lies in the use of a limited quantity of noble materials of the stainless metal type. So the metal support 3 has for example a thickness greater than or equal to 0.5 mm. The metal support 3 also has anti-corrosion properties and withstands vinegar cleanings.
- Another unexpected advantage of the heating assembly according to the invention is obtained by a heat dissipation of at least 30 watts per cm 2 between the shielded heating element 1 and the metal support 3, in no way altering the mechanical rigidity of the assembly thus produced.
- Another advantage of the heating assembly according to the invention lies in obtaining a temperature gradient with the use of a metal plate diffusing 3a and a metal support 3.
- An additional advantage of the heating assembly according to the invention lies in obtaining a heating bottom of dimension, weight and thermal performance adaptable to suit.
Description
La présente invention se rapporte au domaine des ensembles chauffants destinés à être montés dans tous types d'appareils électriques. La présente invention concerne plus particulièrement des ensembles chauffants utilisés dans tous types d'appareils électroménagers. La présente invention concerne également l'agencement et la fixation d'éléments chauffants blindés dans des appareils électroménagers.The present invention relates to the field of heating assemblies intended to be mounted in all types of electrical apparatus. The current The invention relates more particularly to heating assemblies used in all types of household appliances. The present invention relates to also the arrangement and fixing of armored heating elements in Appliances.
Il est déjà connu de réaliser des ensembles chauffants constitués d'un élément chauffant blindé fixé par l'intermédiaire d'une opération de brasage sur un support métallique, de tels assemblages se font exclusivement avec des métaux identiques présentant des propriétés physico-chimiques similaires, de manière à ne pas générer une dilatation différentielle nuisible à leur tenue mécanique dans le temps. Les ensembles chauffants connus sont donc entachés d'un prix de revient important, et ceci particulièrement lorsque l'utilisation de métaux nobles du type métaux inoxydables est indispensable.It is already known to produce heating assemblies consisting of an element armored heater fixed via a brazing operation on a metal support, such assemblies are made exclusively with metals identical with similar physico-chemical properties, so that not to generate differential expansion detrimental to their mechanical strength in time. Known heating assemblies are therefore tainted with a price of is important, especially when the use of noble metals of the stainless metal type is essential.
On connaít également des ensembles chauffants réalisés à l'aide d'opérations de collage, d'agrafage ou de frappe à chaud. Toutes ces opérations présentent l'inconvénient d'être d'une part coûteuses et d'autre part de n'assurer qu'un transfert thermique moins performant.There are also known heating assemblies made using operations gluing, stapling or hot stamping. All these operations present the disadvantage of being on the one hand expensive and on the other hand of ensuring only one less efficient heat transfer.
L'objet de la présente invention consiste donc à réaliser des ensembles chauffants ne présentant pas les inconvénients de l'art antérieur d'une part, et présentant une bonne tenue mécanique dans le temps d'autre part.The object of the present invention therefore consists in making assemblies on the one hand, and not having the drawbacks of the prior art, and having good mechanical strength over time on the other hand.
Un autre objet de la présente invention vise à fournir des ensembles chauffants présentant d'innombrables propriétés mécaniques et thermiques, ainsi qu'un large éventail de possibilités d'adaptation ou de transformation dudit ensemble chauffant.Another object of the present invention is to provide heating assemblies with innumerable mechanical and thermal properties, as well as wide range of possibilities for adaptation or transformation of said set heating.
Les objets de la présente invention sont atteints à l'aide d'un ensemble chauffant comprenant au moins un élément chauffant blindé comportant un tube métallique fixé sur au moins un support métallique à l'aide d'une couche métallique fusible caractérisé en ce que le matériau constitutif du tube métallique est différent du matériau constitutif du support métallique.The objects of the present invention are achieved using a heating assembly comprising at least one shielded heating element comprising a metal tube fixed on at least one metal support using a fusible metal layer characterized in that the material of the metal tube is different from the constituent material of the metal support.
Les objets de la présente invention sont également atteints à l'aide d'un procédé d'assemblage d'un ensemble chauffant, consistant à lier intimement au moins un élément chauffant blindé comportant un tube métallique avec un support métallique en utilisant une couche de brasure, caractérisé en ce qu'il consiste à procéder à une opération de brasage pour des matériaux constitutifs différents du tube métallique de l'élément chauffant blindé d'une part et du support métallique d'autre part.The objects of the present invention are also achieved using a method assembly of a heating assembly, consisting in intimately bonding at least one shielded heating element comprising a metal tube with a metal support using a layer of soldering, characterized in that it consists in carrying out a soldering operation for different constituent materials of the metal tube of the element armored heater on the one hand and metal support on the other.
D'autres caractéristiques et avantages ressortiront mieux à la lecture de la description donnée ci-après en référence aux dessins annexés, donnés à titre d'exemples, dans lesquels :
- la figure 1 représente une vue en coupe d'un ensemble chauffant conforme à l'invention.
- la figure 2 représente une vue en coupe d'une variante de réalisation d'un ensemble chauffant conforme à l'invention.
- la figure 3 représente une vue en coupe d'une variante supplémentaire de réalisation d'un ensemble chauffant conforme à l'invention.
- Figure 1 shows a sectional view of a heating assembly according to the invention.
- 2 shows a sectional view of an alternative embodiment of a heating assembly according to the invention.
- Figure 3 shows a sectional view of an additional alternative embodiment of a heating assembly according to the invention.
La figure 1 représente une vue en coupe de l'assemblage d'un élément chauffant blindé 1, d'un support métallique 3 et d'une couche métallique fusible permettant de réaliser une liaison rigide. L'élément chauffant blindé 1, réalisé de manière connue, est constitué d'un tube métallique à l'intérieur duquel sont agencés un filament résistif et une poudre isolante électrique du type magnésie. L'élément chauffant 1 est avantageusement déformé pour présenter une partie la plane destinée à venir en contact avec le support métallique 3. Le matériau constitutif du tube métallique de l'élément chauffant blindé 1 est, selon l'invention, différent du matériau constitutif du support métallique 3. Ce dernier est de préférence brasé directement sur le support métallique 3 selon une variante de réalisation de l'invention.Figure 1 shows a sectional view of the assembly of a heating element shielded 1, a metal support 3 and a fusible metal layer allowing to make a rigid connection. The shielded heating element 1, made so known, consists of a metal tube inside which are arranged a resistive filament and an electrical insulating powder of the magnesia type. The element heater 1 is advantageously deformed to present a flat part intended to come into contact with the metallic support 3. The constituent material of the metal tube of the shielded heating element 1 is, according to the invention, different of the material constituting the metal support 3. The latter is preferably brazed directly on the metal support 3 according to an alternative embodiment of the invention.
La couche métallique fusible, dont la température de fusion est inférieure à la
température de fusion des éléments constitutifs de l'ensemble chauffant, est de
préférence une couche de brasure 2 déposée sur l'un au moins des éléments
constitutifs dudit ensemble chauffant.The fusible metal layer, the melting temperature of which is lower than the
melting point of the components of the heating assembly, is
preferably a layer of
La couche de brasure 2, réalisant l'interface entre le support métallique 3 et
l'élément chauffant blindé 1, est avantageusement constituée d'une poudre
métallique, conductrice thermique et d'un décapant adaptés. La partie 1a
écrasée ou plane de l'élément chauffant blindé 1 permet d'augmenter la surface
de contact entre le support métallique 3 et ledit élément chauffant blindé 1.The brazing
L'ensemble chauffant conforme à l'invention comporte au moins une couche de
brasure 2 déposée par tous moyens sur l'un au moins des éléments constitutifs
dudit ensemble chauffant. Avantageusement le tube métallique de l'élément
chauffant blindé 1 et le support métallique 3 sont respectivement en aluminium et
en métal inoxydable. Selon une variante de réalisation de l'ensemble chauffant
conforme à l'invention, le tube métallique de l'élément chauffant blindé 1 est en
métal inoxydable et le support métallique 3 est en aluminium, ou tout autre
matériau conducteur thermique susceptible d'être lié audit élément chauffant
blindé 1 par brasure. Le support métallique 3 peut également être constitué d'au
moins deux plaques métalliques assemblées par tous moyens et notamment par
brasage. Un tel assemblage peut être effectué simultanément à l'opération de
brasage de l'élément chauffant blindé 1 sur le support métallique 3. Il est
également possible d'assembler par brasage, conformément à l'invention ,
l'élément chauffant blindé 1 et le support métallique 3, lesquels sont réalisés
respectivement en cuivre et en métal inoxydable ou en cuivre et en aluminium.The heating assembly according to the invention comprises at least one layer of
La figure 2 représente un ensemble chauffant conforme à l'invention comprenant
une plaque métallique 3a diffusant l'énergie thermique, d'une part disposée entre
l'élément chauffant blindé 1 et le support métallique 3, et d'autre part solidarisée
avec ledit élément chauffant blindé 1 et ledit support métallique 3 par
l'intermédiaire de couches de brasure 2. Le matériau constitutif de la plaque
métallique 3a diffusante permet d'obtenir selon le matériau considéré un gradient
de température entre le support métallique 3 et l'élément chauffant blindé 1. Ainsi
la plaque métallique 3a est, par exemple, réalisée en aluminium ou en cuivre ou
dans un autre matériau permettant de diffuser l'énergie thermique. La plaque
métallique 3a peut également, selon une autre variante de réalisation du sous-ensemble
chauffant conforme à l'invention, être réalisée dans un matériau
identique ou similaire au matériau constitutif de l'élément chauffant blindé 1 ou du
support métallique 3. Le gradient de température que l'on peut obtenir avec un
support métallique 3 réalisé avec un matériau adéquat est particulièrement
intéressant, lorsque ledit support métallique 3, fixé ou maintenu par un bâti,
réalisé en matériau plastique ne supportant pas des températures élevées. Le
support métallique 3 peut ainsi jouer le rôle de frein thermique. La plaque
métallique 3a peut également servir dans diverses applications pour l'ensemble
chauffant. Il est ainsi possible d'augmenter l'épaisseur, et par conséquent la
rigidité mécanique de l'ensemble chauffant ainsi réalisé et constituer par exemple
un fond diffusant thermique pour autocuiseur, pour friteuse ou pour tout autre
appareil électroménager. Le support métallique 3 est de préférence réalisé dans
un matériau métallique inoxydable ou dans tout autre métal noble lorsqu'il est
amené à venir en contact avec des articles alimentaires destinés à être cuits ou
chauffés. Ceci est particulièrement le cas des bouilloires électriques ou
éventuellement des cafetières électriques. En outre, un support métallique 3
réalisé dans un métal inoxydable retarde l'entartrage et facilite les opérations de
nettoyage mécaniques et permet le nettoyage chimique. Un alliage d'acier
inoxydable peut également convenir pour réaliser le support métallique 3.FIG. 2 represents a heating assembly according to the invention comprising
a metal plate 3a diffusing thermal energy, on the one hand disposed between
the shielded heating element 1 and the metal support 3, and on the other hand secured
with said shielded heating element 1 and said metal support 3 by
brazing
La figure 3 représente une autre variante de réalisation de l'ensemble chauffant
conforme à l'invention, lequel comprend un tube de circulation 5 métallique
susceptible de transporter un fluide, ledit tube de circulation 5 étant lié intimement
audit ensemble chauffant. Le tube de circulation 5 présente avantageusement
une section circulaire et une forme droite, en U ou en fer à cheval. Une autre
configuration épousant la forme ou la configuration de l'élément sur lequel il est
rapporté est également envisageable. La figure 3 représente une vue en coupe
d'un tel ensemble chauffant conforme à l'invention. Le tube de circulation 5 est
brasé directement sur l'élément chauffant blindé 1. Ceci est particulièrement le
cas pour des chaudières bi-tubes pour machines à café ou machines
distributrices de boissons chaudes ou de vapeur. De tels ensembles chauffants
sont par exemple constitués d'un élément chauffant blindé 1 en aluminium et
d'un tube de circulation 5 réalisé par exemple en acier ou métal inoxydable.
L'élément chauffant blindé 1 présente, à cet effet, une déformation épousant au
moins partiellement la configuration ou la forme extérieure du tube de circulation
5, de manière à réaliser une grande surface de contact entre le élément
chauffant blindé 1 et le tube de circulation 5. La couche de brasure 2 est utilisée
comme interface de liaison entre l'élément chauffant blindé 1 et le tube de
circulation 5. Un tel ensemble chauffant peut également, selon une autre variante
de réalisation conforme à l'invention, être constitué d'un élément chauffant blindé
1 en aluminium ,brasé sur le tube de circulation 5 réalisé également en
aluminium, le support métallique 3 étant réalisé par exemple à partir d'un métal
inoxydable. Ce dernier est par exemple fixé sur l'ensemble ainsi constitué par
une opération de brasage. La rigidité mécanique de l'ensemble chauffant
conforme à l'invention est ainsi assurée au moins partiellement par des
opérations de brasage. Figure 3 shows another alternative embodiment of the heating assembly
according to the invention, which comprises a metal circulation tube 5
capable of transporting a fluid, said circulation tube 5 being intimately linked
said heating assembly. The circulation tube 5 advantageously has
a circular section and a straight, U-shaped or horseshoe shape. Another
configuration matching the shape or configuration of the element on which it is
reported is also possible. Figure 3 shows a sectional view
of such a heating assembly according to the invention. The circulation tube 5 is
soldered directly to the shielded heating element 1. This is particularly the
case for twin-tube boilers for coffee machines or machines
vending machines for hot drinks or steam. Such heating assemblies
for example consist of an armored heating element 1 made of aluminum and
a circulation tube 5 made for example of steel or stainless metal.
The shielded heating element 1 has, for this purpose, a deformation conforming to the
at least partially the configuration or the external shape of the circulation tube
5, so as to achieve a large contact surface between the element
armored heater 1 and circulation tube 5.
Par ailleurs Le tube de circulation 5 peut également être brasé soit sur la plaque métallique diffusante 3a , soit directement sur le support métallique 3.Furthermore, the circulation tube 5 can also be brazed either on the plate diffusing metallic 3a, either directly on the metallic support 3.
D'autres variantes d'associations de métaux différents par des opérations de brasage sont également envisageables sans sortir du cadre de la présente invention. Les ensembles chauffants conformes à la présente invention trouvent donc leur utilisation ou leur application dans tous types d'appareils électroménagers.Other variants of associations of different metals by operations of brazing are also possible without departing from the scope of this invention. The heating assemblies according to the present invention find therefore their use or application in all types of devices appliances.
L'ensemble chauffant réalisé conformément à l'invention est donc obtenu à partir
d'un procédé de fabrication consistant à lier intiment au moins un élément
chauffant blindé 1 avec un support métallique 3 en utilisant une couche de
brasure 2. Ce procédé d'assemblage consiste également à procéder à une
opération de brasage pour des matériaux constitutifs différents du tube
métallique de l'élément chauffant blindé 1 d'une part, et du support métallique 3
d'autre part. En outre, le procédé conforme à l'invention consiste à déposer la
couche de brasure 2 sur l'une des parties au moins de l'ensemble chauffant au
préalable de l'opération d'assemblage desdites parties. Ces dernières sont
constituées par exemple par le support métallique 3 et par l'élément chauffant
blindé 1. Ce dernier peut avantageusement être déformé à l'aide d'une opération
de matriçage par exemple, pour présenter une grande surface de contact avec le
support métallique 3 sur lequel il sera rapporté au cours de l'assemblage de
l'ensemble chauffant conforme à l'invention. La couche de brasure 2 permet de
réaliser une liaison mécanique après une opération de cuisson ou d'étuvage.The heating assembly produced in accordance with the invention is therefore obtained from
of a manufacturing process consisting in intimately linking at least one element
armored heater 1 with a metal support 3 using a layer of
brazing 2. This assembly process also consists in carrying out a
brazing operation for different constituent materials of the tube
of the shielded heating element 1 on the one hand, and of the metal support 3
on the other hand. In addition, the process according to the invention consists in depositing the
brazing
L'avantage de l'ensemble chauffant conforme à l'invention réside dans l'utilisation d'une quantité limitée de matériaux nobles du type métaux inoxydables. Ainsi le support métallique 3 présente par exemple une épaisseur supérieure ou égale à 0.5 mm. Le support métallique 3 présente de surcroít des propriétés anti-corrosives et résiste à des nettoyages au vinaigre. The advantage of the heating assembly according to the invention lies in the use of a limited quantity of noble materials of the stainless metal type. So the metal support 3 has for example a thickness greater than or equal to 0.5 mm. The metal support 3 also has anti-corrosion properties and withstands vinegar cleanings.
Un autre avantage inattendu de l'ensemble chauffant conforme à l'invention est obtenu par une dissipation thermique d'au moins 30 watts par cm2 entre l'élément chauffant blindé 1 et le support métallique 3, n'altérant aucunement la rigidité mécanique de l'assemblage ainsi réalisé.Another unexpected advantage of the heating assembly according to the invention is obtained by a heat dissipation of at least 30 watts per cm 2 between the shielded heating element 1 and the metal support 3, in no way altering the mechanical rigidity of the assembly thus produced.
Un autre avantage de l'ensemble chauffant conforme à l'invention réside dans l'obtention d'un gradient de température avec l'utilisation d'une plaque métallique diffusante 3a et d'un support métallique 3.Another advantage of the heating assembly according to the invention lies in obtaining a temperature gradient with the use of a metal plate diffusing 3a and a metal support 3.
Un avantage complémentaire de l'ensemble chauffant conforme à l'invention réside dans l'obtention d'un fond chauffant de dimension, de poids et de performances thermiques adaptables à convenance.An additional advantage of the heating assembly according to the invention lies in obtaining a heating bottom of dimension, weight and thermal performance adaptable to suit.
Claims (12)
- A heater assembly comprising at least one metal-clad heater element (1) comprising a metal tube fixed on at least one metal support (3) by means of a layer of fusible metal, the assembly being characterized in that the material constituting the metal tube of the metal-clad heater element (1) is different from the material constituting the metal support (3).
- A heater assembly according to claim 1, characterized in that the layer of fusible metal is a layer of brazing (2) deposited on at least one of the elements constituting said heating assembly.
- A heating assembly according to claim 1 or claim 2, characterized in that the metal support (3) is constituted by at least two metal plates assembled together by brazing.
- A heating assembly according to claim 1 or claim 3, characterized in that it includes a metal plate (3a) for diffusing heat energy, said plate being disposed between the metal-clad heater element (1) and the metal support (3), and being secured both to said metal-clad heater element (1) and to said metal support (3) by means of layers of brazing (2).
- A heater assembly according to any one of claims 1 to 4, characterized in that it comprises a metal flow tube (5) suitable for conveying a fluid, said flow tube (5) being intimately bonded to said heater assembly.
- A heater assembly according to claim 5, characterized in that the flow tube (5) is brazed to the diffusing metal plate (3a).
- A heater assembly according to claim 5, characterized in that the flow tube (5) is brazed to the metal support (3).
- A heater assembly according to claim 5, characterized in that the flow tube (5) is brazed to the metal-clad heater element (1).
- A heater assembly according to any one of claims 1 to 8, characterized in that the metal tube of the metal-clad heater element (1) and the metal support (3) are made respectively out of copper and out of a stainless metal.
- A heater assembly according to any one of claims 1 to 8, characterized in that the metal tube of the metal-clad heater element (1) and the metal support (3) are made respectively out of aluminum and out of a stainless metal.
- An electrical household appliance including a heater assembly according to any one of claims 1 to 10.
- A method of assembling a heater assembly, the method consisting in intimately bonding at least one metal-clad heater element (1) including a metal tube with a metal support (3) by using a layer of brazing (2), the method being characterized in that it consists in proceeding with a brazing operation for different materials constituting the metal tube of the metal-clad heater element (1) and the metal support (3).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR9504941 | 1995-04-19 | ||
| FR9504941A FR2733383B1 (en) | 1995-04-19 | 1995-04-19 | HEATING ELEMENT ARM ON SUPPORT |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0739153A1 EP0739153A1 (en) | 1996-10-23 |
| EP0739153B1 true EP0739153B1 (en) | 2003-01-15 |
Family
ID=9478430
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP19960420137 Revoked EP0739153B1 (en) | 1995-04-19 | 1996-04-19 | Heating element brazed onto a support |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP0739153B1 (en) |
| DE (1) | DE69625738T2 (en) |
| ES (1) | ES2189859T3 (en) |
| FR (1) | FR2733383B1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2918836B1 (en) * | 2007-07-12 | 2011-01-14 | Atlantic Industrie Sas | HEATING BODY FOR HEATING APPARATUS, AND APPARATUS FOR HEATING PREMISES INCORPORATING SUCH HEATING BODY |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1465590A (en) * | 1965-11-30 | 1967-01-13 | Vulcain | Hot plates |
| US3816704A (en) * | 1972-03-20 | 1974-06-11 | Gen Electric | Surface heating apparatus |
| JPS5296434A (en) * | 1976-02-09 | 1977-08-13 | Furukawa Aluminium | Aluminum electric heating plate |
| FR2453577A2 (en) * | 1979-04-05 | 1980-10-31 | Metanic Sa | Modification to plate heating element - with reduced diameter of copper sheathed magnesium-oxide packed heating element to facilitate re-mounting |
| DE3312312A1 (en) * | 1983-04-06 | 1984-10-11 | Türk & Hillinger GmbH, 7200 Tuttlingen | Electric tubular heating element |
| DE3347160A1 (en) * | 1983-12-27 | 1985-08-29 | Türk & Hillinger GmbH, 7200 Tuttlingen | ELECTRIC HEATING DEVICE FOR PLASTIC INJECTION NOZZLES |
| DE3407965A1 (en) * | 1984-03-03 | 1985-09-05 | E.G.O. Elektro-Geräte Blanc u. Fischer, 7519 Oberderdingen | GRILL PLATE |
| DE3718836A1 (en) * | 1987-06-05 | 1989-01-12 | Ego Elektro Blanc & Fischer | HEATING DEVICE WITH AN ELECTRIC RADIATOR |
| DE3830327A1 (en) * | 1988-09-07 | 1990-03-15 | Dieter Schanuel | Electrically heatable container, such as deep-fat frier, and method for its manufacture |
| DE9115960U1 (en) * | 1991-12-21 | 1992-05-21 | Conti Elektra Heizelemente Gmbh, 6483 Bad Soden-Salmuenster, De |
-
1995
- 1995-04-19 FR FR9504941A patent/FR2733383B1/en not_active Expired - Fee Related
-
1996
- 1996-04-19 EP EP19960420137 patent/EP0739153B1/en not_active Revoked
- 1996-04-19 ES ES96420137T patent/ES2189859T3/en not_active Expired - Lifetime
- 1996-04-19 DE DE1996625738 patent/DE69625738T2/en not_active Revoked
Also Published As
| Publication number | Publication date |
|---|---|
| ES2189859T3 (en) | 2003-07-16 |
| EP0739153A1 (en) | 1996-10-23 |
| FR2733383A1 (en) | 1996-10-25 |
| FR2733383B1 (en) | 1997-06-06 |
| DE69625738D1 (en) | 2003-02-20 |
| DE69625738T2 (en) | 2003-10-16 |
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