EP0739153B1 - Elément chauffant brasé sur support - Google Patents
Elément chauffant brasé sur 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
- Authority
- 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
Links
Images
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
- 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
- H05B3/40—Heating elements having the shape of rods or tubes
- H05B3/42—Heating elements having the shape of rods or tubes non-flexible
-
- 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
-
- 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 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.
Claims (12)
- Ensemble chauffant comprenant au moins un élément chauffant blindé (1) comportant un tube métallique fixé sur au moins un support métallique (3) à l'aide d'une couche métallique fusible caractérisé en ce que le matériau constitutif du tube métallique de l'élément chauffant blindé (1) est différent du matériau constitutif du support métallique (3).
- Ensemble chauffant selon la revendication 1 caractérisé en ce que la couche métallique fusible est une couche de brasure (2) déposée sur l'un au moins des éléments constitutifs dudit ensemble chauffant.
- Ensemble chauffant selon la revendication 1 ou 2 caractérisé en ce que le support métallique (3) est constitué d'au moins deux plaques métalliques assemblées par brasage.
- Ensemble chauffant selon l'une des revendications 1 ou 3 caractérisé en ce qu'il comprend 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).
- Ensemble chauffant selon l'une des revendications 1 à 4 caractérisé en ce qu'il comprend un tube de circulation métallique (5), susceptible de transporter un fluide, ledit tube de circulation (5) étant lié intimement audit ensemble chauffant.
- Ensemble chauffant selon la revendication 5 caractérisé en ce que le tube de circulation (5) est brasé sur la plaque métallique (3a) diffusante.
- Ensemble chauffant selon la revendication 5 caractérisé en ce que le tube de circulation (5) est brasé sur le support métallique (3).
- Ensemble chauffant selon la revendication 5 caractérisé en ce que le tube de circulation (5) est brasé sur l'élément chauffant blindé (1).
- Ensemble chauffant selon l'une des revendications 1 à 8 caractérisé en ce que le tube métallique de l'élément chauffant blindé (1) et le support métallique (3) sont respectivement en cuivre et en métal inoxydable.
- Ensemble chauffant selon l'une des revendications 1 à 8 caractérisé en ce que le tube métallique de l'élément chauffant blindé (1) et le support métallique (3) sont respectivement en aluminium et en métal inoxydable.
- Appareil électroménager comprenant un ensemble chauffant conforme à l'une des revendications 1 à 10.
- Procédé d'assemblage d'un ensemble chauffant, consistant à lier intimement au moins un élément chauffant blindé (1) comportant un tube métallique avec un support métallique (3) en utilisant une couche de brasure (2), 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 (1) d'une part et du support métallique (3) d'autre part.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9504941 | 1995-04-19 | ||
FR9504941A FR2733383B1 (fr) | 1995-04-19 | 1995-04-19 | Element chauffant brase sur support |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0739153A1 EP0739153A1 (fr) | 1996-10-23 |
EP0739153B1 true EP0739153B1 (fr) | 2003-01-15 |
Family
ID=9478430
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19960420137 Revoked EP0739153B1 (fr) | 1995-04-19 | 1996-04-19 | Elément chauffant brasé sur support |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0739153B1 (fr) |
DE (1) | DE69625738T2 (fr) |
ES (1) | ES2189859T3 (fr) |
FR (1) | FR2733383B1 (fr) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2918836B1 (fr) * | 2007-07-12 | 2011-01-14 | Atlantic Industrie Sas | Corps de chauffe pour appareil de chauffage,et appareil de chauffage de locaux incorporant un tel corps de chauffe |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1465590A (fr) * | 1965-11-30 | 1967-01-13 | Vulcain | Plaques chauffantes |
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 (fr) * | 1979-04-05 | 1980-10-31 | Metanic Sa | Plaque chauffante |
DE3312312A1 (de) * | 1983-04-06 | 1984-10-11 | Türk & Hillinger GmbH, 7200 Tuttlingen | Elektrisches rohrheizelement |
DE3347160A1 (de) * | 1983-12-27 | 1985-08-29 | Türk & Hillinger GmbH, 7200 Tuttlingen | Elektrische heizeinrichtung fuer kunststoffspritzduesen |
DE3407965A1 (de) * | 1984-03-03 | 1985-09-05 | E.G.O. Elektro-Geräte Blanc u. Fischer, 7519 Oberderdingen | Grillplatte |
DE3718836A1 (de) * | 1987-06-05 | 1989-01-12 | Ego Elektro Blanc & Fischer | Heizvorrichtung mit einem elektrischen heizkoerper |
DE3830327A1 (de) * | 1988-09-07 | 1990-03-15 | Dieter Schanuel | Elektrisch beheizbarer behaelter, wie friteuse, und verfahren zu seiner herstellung |
DE9115960U1 (fr) * | 1991-12-21 | 1992-05-21 | Conti Elektra Heizelemente Gmbh, 6483 Bad Soden-Salmuenster, De |
-
1995
- 1995-04-19 FR FR9504941A patent/FR2733383B1/fr not_active Expired - Fee Related
-
1996
- 1996-04-19 ES ES96420137T patent/ES2189859T3/es not_active Expired - Lifetime
- 1996-04-19 EP EP19960420137 patent/EP0739153B1/fr not_active Revoked
- 1996-04-19 DE DE1996625738 patent/DE69625738T2/de not_active Revoked
Also Published As
Publication number | Publication date |
---|---|
FR2733383A1 (fr) | 1996-10-25 |
ES2189859T3 (es) | 2003-07-16 |
FR2733383B1 (fr) | 1997-06-06 |
DE69625738T2 (de) | 2003-10-16 |
DE69625738D1 (de) | 2003-02-20 |
EP0739153A1 (fr) | 1996-10-23 |
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