EP0695914A1 - Extraflaches Kochfelt für Einbau - Google Patents

Extraflaches Kochfelt für Einbau Download PDF

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Publication number
EP0695914A1
EP0695914A1 EP95401635A EP95401635A EP0695914A1 EP 0695914 A1 EP0695914 A1 EP 0695914A1 EP 95401635 A EP95401635 A EP 95401635A EP 95401635 A EP95401635 A EP 95401635A EP 0695914 A1 EP0695914 A1 EP 0695914A1
Authority
EP
European Patent Office
Prior art keywords
built
cooking element
element according
layer
insulating material
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.)
Granted
Application number
EP95401635A
Other languages
English (en)
French (fr)
Other versions
EP0695914B1 (de
Inventor
Sylvie Petetin
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sollac SA
Original Assignee
Sollac SA
Lorraine de Laminage Continu SA SOLLAC
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=9466088&utm_source=***_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0695914(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Sollac SA, Lorraine de Laminage Continu SA SOLLAC filed Critical Sollac SA
Publication of EP0695914A1 publication Critical patent/EP0695914A1/de
Application granted granted Critical
Publication of EP0695914B1 publication Critical patent/EP0695914B1/de
Anticipated expiration legal-status Critical
Revoked legal-status Critical Current

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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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
    • F24C15/00—Details
    • F24C15/10—Tops, e.g. hot plates; Rings
    • F24C15/102—Tops, e.g. hot plates; Rings electrically heated

Definitions

  • the present invention relates to a built-in cooking element with a heating body, in particular for domestic use.
  • Such cooking elements have a thickness of around 25 mm, which allows easy installation in any type of work surface, but does not have a flat work surface due to the presence of gas burners or plates. protruding electrics.
  • cooking elements with halogen heaters or radiant heaters. These cooking elements usually consist of a ceramic glass plate stuck in a frame, and one or more heating bodies, in particular halogen heating bodies or radiant heating bodies, placed under the glass ceramic plate at a distance determined from it, of the order of 10 to 20 millimeters.
  • the heaters when the heaters are put into service, they emit infrared in the case of halogen heaters and an amount of energy released by the Joule effect in the case of radiant heaters, which lets through the ceramic glass plate and which heat the bottom of the containers.
  • vitroceramic type cooking elements are numerous.
  • the glass ceramic plate hardly expands with temperature, it lets visible and invisible infrared emitted by the heating bodies placed under it pass, and it is a poor conductor of heat, which makes it possible to isolate the areas located above the heating elements of the rest of the ceramic hob.
  • these cooking elements are perfectly flat and very aesthetic.
  • vitroceramic type cooking elements nevertheless have a certain number of drawbacks.
  • the glass ceramic plate is easily scratched and in addition, it is relatively fragile. Indeed, if a heavy or blunt object falls on this plate, it can split and it is then necessary to replace it.
  • the poor heat conduction of the ceramic hobs has the disadvantage of requiring significant energy to heat the area in contact with the bottom of the containers.
  • vitroceramic type cooking elements are thicker than the so-called traditional cooking elements, owing to the distance existing between the vitroceramic glass plate and the heating elements, and also due to the very thickness of said element. glass plate.
  • vitroceramic cooking elements have a thickness of the order of 45 to 50 mm, which sometimes poses a problem for fitting them flush with the work surfaces.
  • the present invention relates to a built-in cooking element having the advantages of glass ceramic cooking elements, but the disadvantages of which are eliminated, and what is more, has a small thickness, of the order of 25 mm.
  • the present invention relates more particularly to a built-in cooking element having at least one heating body, characterized in that it comprises a steel support table coated on both sides with a layer of an electrically insulating material, provided with openings in which the heating bodies are embedded, integral with said openings by means of a seal and assembly.
  • the built-in cooking element according to the invention consists of a support table 1 and has at least one heating body 2.
  • the cooking element has four circular heating bodies 2 and has on its right side a set of control and display keys of known type.
  • the heaters are indeed circular, but there are heaters of different shape, for example oblong or ovoid.
  • the support table 1 is provided with openings 3 in which the heating bodies 2 are embedded, integral with said openings 3 by means of a seal and assembly 4.
  • the openings 3 are preferably frustoconical, the small base of which is situated on the side of the underside of the support table 1 and the periphery of the openings is slightly greater than that of the heating bodies 2.
  • this seal is a special adhesive resistant to high temperature and having thermal insulation properties, which makes it possible to avoid the propagation of heat from the heating body 2 to the support table 1.
  • This seal is also designed to collect any thermal expansions that the heating body 2 may undergo, and to prevent them from resulting in a deformation of the support table 1.
  • the heating bodies 2 are secured to the cooking plate 1 by fixing elements (not shown) of known type, such as by example of the holding tabs integral with the support table 1 and screwed, electrically insulated, to the heating body, or vice versa.
  • the support table 1 consists of a steel plate 5 coated on its two faces with a layer 6 of an electrically insulating material.
  • the electrically insulating material of each layer 6 is an enamel.
  • the support table 1 as shown in the figures is completely planar, but it is conceivable to give it a shape which is not entirely planar, with for example a protruding rim. This operation of conforming the support table 1 is easy due to the drawability of the steel.
  • the heating bodies 2 consist of a support layer 7 made of electrically insulating material and an electrically conductive layer 8 comprising electrical supply tracks 9 for its connection to an external energy source.
  • the electrically conductive layer 8 is continuous and film-like, that is to say that it covers almost all of the support layer 7 of the heating body 2.
  • the electrically conductive layer 8 is located on the side of the underside of the heating body 2, which is not in contact with the containers to be heated.
  • the support layer 7 consists of a steel plate 10 coated on both sides with an electrically insulating material 11, preferably an enamel or a ceramic.
  • the steel constituting the support layer 7 of the heating bodies 2 is an iron-nickel alloy with a low coefficient of expansion.
  • the steel constituting the support layer 7 is a steel known under the brand INVAR, that is to say an iron-nickel alloy with 36% nickel and whose coefficient of expansion is equal to approximately 1.10 ⁇ 6 / ° C.
  • the electrically conductive layer 8 is deposited on the support layer 7 of the heating body 2 by vacuum metallization.
  • the electrically conductive layer 8 is composed essentially of pure chromium and chromium oxide.
  • the proportion of chromium oxide is chosen so as to give said layer 8 the appropriate resistivity to allow its connection to the terminals of an external energy source, generally 220 volts, and dissipate the desired power.
  • the quantity of residual oxygen present in the metallization enclosure is controlled during vacuum metallization, and this quantity of oxygen is adjusted. so as to obtain a layer of chromium and chromium oxide having an appropriate resistivity.
  • connection to the external energy source can be established by connections 12, 13 made by soldering the ends of appropriate conductors on the rear face of the supply tracks 9.
  • This amount of heat will propagate through the support layer 7, electrically insulating but conductive of heat because of its very small thickness, and thus diffuse towards the face of the heating body in contact with the container to be heated.
  • the continuous and film-like nature of the conductive layer 8 allows an exemplary heating speed, much faster than with the heating bodies of the prior art.
  • the advantage of the heating body according to the invention compared to a heating body of the glass-ceramic type lies in the direct contact between the conductive layer 8 and the support layer 7, which makes it possible to be free from any phenomenon of loss of heat.
  • the support layer 7 of the heating body is made of a material which is a good thermal conductor, much better than glass, which allows shorter response times and energy savings.
  • the cooking element according to the invention is extra-flat. This is because, on the one hand, of the direct contact between the conductive layer 8 and the support layer 7 of the heating body 2 and, on the other hand, of the small thickness of the support layer 7 of the heating body and of the support table, since these are made from a steel plate, has a maximum total thickness of 25 mm.
  • Such a thickness allows embedding in any type of work plan, while keeping the flatness of the assembly.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Resistance Heating (AREA)
  • Electric Stoves And Ranges (AREA)
  • Magnetic Heads (AREA)
  • Baking, Grill, Roasting (AREA)
  • Glass Compositions (AREA)
  • Cookers (AREA)
EP95401635A 1994-08-04 1995-07-07 Extraflaches Kochfeld für Einbau Revoked EP0695914B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9409700 1994-08-04
FR9409700A FR2723430B1 (fr) 1994-08-04 1994-08-04 Element de cuisson encastrable extra-plat

Publications (2)

Publication Number Publication Date
EP0695914A1 true EP0695914A1 (de) 1996-02-07
EP0695914B1 EP0695914B1 (de) 1998-10-21

Family

ID=9466088

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95401635A Revoked EP0695914B1 (de) 1994-08-04 1995-07-07 Extraflaches Kochfeld für Einbau

Country Status (6)

Country Link
US (1) US5679273A (de)
EP (1) EP0695914B1 (de)
AT (1) ATE172528T1 (de)
DE (1) DE69505471T2 (de)
ES (1) ES2122475T3 (de)
FR (1) FR2723430B1 (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19612621A1 (de) * 1996-03-29 1997-10-02 Schott Glaswerke Kochfeld mit einer Kochfläche aus Glas-/Glaskeramik
EP2192349A2 (de) * 2008-12-01 2010-06-02 Wamsler Haus- und Küchentechnik GmbH Kochfeld zum Anordnen über einem Wärmeerzeuger
EP2615378A1 (de) * 2012-01-13 2013-07-17 Electrolux Home Products Corporation N.V. Kochfeld mit mindestens einer Grillplatte

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE59813206D1 (de) * 1997-01-10 2005-12-29 Ego Elektro Geraetebau Gmbh Kochsystem mit einer Kontaktwärme übertragenden Elektro-Kochplatte
DE29702418U1 (de) * 1997-02-13 1997-03-27 Schott Glaswerke, 55122 Mainz Kochgerät mit Glaskeramikkochfläche mit Schnellkochzone
US5973298A (en) * 1998-04-27 1999-10-26 White Consolidated Industries, Inc. Circular film heater and porcelain enamel cooktop
US6501053B2 (en) 2000-07-26 2002-12-31 Maytag Corporation Control system for an appliance cooktop
US6297482B1 (en) 2000-07-26 2001-10-02 Maytag Corporation Ceramic-based downdraft cooktop having angled front face portion
US6410892B1 (en) 2001-06-19 2002-06-25 Bsh Home Appliances Corporation Cooktop having a flat glass ceramic cooking surface
US7041942B2 (en) * 2002-11-15 2006-05-09 Engineering Glass Products, Llc Heating plate assembly for a cooking appliance
US20060225627A1 (en) * 2005-04-08 2006-10-12 Steelcase Development Corporation Work surface, edge treatment and method for configuring work surface
US8814861B2 (en) 2005-05-12 2014-08-26 Innovatech, Llc Electrosurgical electrode and method of manufacturing same
US7147634B2 (en) 2005-05-12 2006-12-12 Orion Industries, Ltd. Electrosurgical electrode and method of manufacturing same
NL1036934C2 (nl) * 2009-05-08 2010-11-09 Abk Innovent B V Keukeninrichting en werkwijze voor het verschaffen van een werkblad voor een keuken.
CN113937606A (zh) * 2021-10-14 2022-01-14 浙江水晶光电科技股份有限公司 一种电路保护元件及其制备方法

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2127555A1 (de) * 1971-06-03 1972-12-14 Siemens-Electrogeräte GmbH, 1000 Berlin u. 8000 München Kochmulde mit einem Träger aus Glas, Glaskeramik oder Asbestzement
EP0229928A2 (de) * 1985-12-20 1987-07-29 Bosch-Siemens HausgerÀ¤te GmbH Heizelement für thermische Hausgeräte, insbesondere für Kochstellen

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US335261A (en) * 1886-02-02 weeks
US3406278A (en) * 1965-10-12 1968-10-15 Gen Motors Corp Wattage controller for electrical surface heating unit
US3733462A (en) * 1972-01-11 1973-05-15 Raytheon Co Heating element for flush top ranges
US3805023A (en) * 1972-03-31 1974-04-16 Horizons Inc Electrical heating device having metal depositions: in a porous anodized metal layer
US3866018A (en) * 1974-04-01 1975-02-11 Gen Electric Molded plastic cooktop with heated glass-ceramic plate insert
US4009795A (en) * 1975-12-08 1977-03-01 General Electric Company Combined reflector pan and trim ring
US4237368A (en) * 1978-06-02 1980-12-02 General Electric Company Temperature sensor for glass-ceramic cooktop
DE3009961C2 (de) * 1980-03-14 1982-10-28 Schott Glaswerke, 6500 Mainz Glaskeramik-Kochfeldeinheit zum Einbau in eine Arbeitsplatte
CA1241050A (en) * 1985-03-22 1988-08-23 W.S. Dominic Ng Glass countertop range mounting
DE3728466A1 (de) * 1987-08-26 1989-03-09 Ego Elektro Blanc & Fischer Kochgeraet
US5185047A (en) * 1989-12-01 1993-02-09 Whirlpool Corporation Frameless glass-ceramic cooktop mounting assembly
US5221829A (en) * 1990-10-15 1993-06-22 Shimon Yahav Domestic cooking apparatus

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2127555A1 (de) * 1971-06-03 1972-12-14 Siemens-Electrogeräte GmbH, 1000 Berlin u. 8000 München Kochmulde mit einem Träger aus Glas, Glaskeramik oder Asbestzement
EP0229928A2 (de) * 1985-12-20 1987-07-29 Bosch-Siemens HausgerÀ¤te GmbH Heizelement für thermische Hausgeräte, insbesondere für Kochstellen

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19612621A1 (de) * 1996-03-29 1997-10-02 Schott Glaswerke Kochfeld mit einer Kochfläche aus Glas-/Glaskeramik
DE19612621C2 (de) * 1996-03-29 1999-03-11 Schott Glas Kochfeld mit einer Kochfläche aus Glas oder Glaskeramik
EP2192349A2 (de) * 2008-12-01 2010-06-02 Wamsler Haus- und Küchentechnik GmbH Kochfeld zum Anordnen über einem Wärmeerzeuger
EP2192349A3 (de) * 2008-12-01 2012-05-30 Wamsler Haus- und Küchentechnik GmbH Kochfeld zum Anordnen über einem Wärmeerzeuger
EP2615378A1 (de) * 2012-01-13 2013-07-17 Electrolux Home Products Corporation N.V. Kochfeld mit mindestens einer Grillplatte

Also Published As

Publication number Publication date
US5679273A (en) 1997-10-21
ATE172528T1 (de) 1998-11-15
EP0695914B1 (de) 1998-10-21
FR2723430B1 (fr) 1997-01-03
FR2723430A1 (fr) 1996-02-09
DE69505471D1 (de) 1998-11-26
ES2122475T3 (es) 1998-12-16
DE69505471T2 (de) 1999-06-02

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