EP0540876A2 - Plaque de cuisson - Google Patents

Plaque de cuisson Download PDF

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Publication number
EP0540876A2
EP0540876A2 EP92116753A EP92116753A EP0540876A2 EP 0540876 A2 EP0540876 A2 EP 0540876A2 EP 92116753 A EP92116753 A EP 92116753A EP 92116753 A EP92116753 A EP 92116753A EP 0540876 A2 EP0540876 A2 EP 0540876A2
Authority
EP
European Patent Office
Prior art keywords
glass
heating element
ring
light guide
hob according
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
EP92116753A
Other languages
German (de)
English (en)
Other versions
EP0540876A3 (en
EP0540876B1 (fr
Inventor
Heinrich Detterbeck
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.)
BSH Hausgeraete GmbH
Original Assignee
Individual
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
Priority claimed from DE4139508A external-priority patent/DE4139508C2/de
Application filed by Individual filed Critical Individual
Publication of EP0540876A2 publication Critical patent/EP0540876A2/fr
Publication of EP0540876A3 publication Critical patent/EP0540876A3/de
Application granted granted Critical
Publication of EP0540876B1 publication Critical patent/EP0540876B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • F24C7/00—Stoves or ranges heated by electric energy
    • F24C7/08—Arrangement or mounting of control or safety devices
    • F24C7/082—Arrangement or mounting of control or safety devices on ranges, e.g. control panels, illumination
    • F24C7/083—Arrangement or mounting of control or safety devices on ranges, e.g. control panels, illumination on tops, hot 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
    • H05B3/74—Non-metallic plates, e.g. vitroceramic, ceramic or glassceramic hobs, also including power or control circuits
    • H05B3/746—Protection, e.g. overheat cutoff, hot plate indicator

Definitions

  • the invention relates to a hob according to the preamble of patent claim 1.
  • annular light guide is arranged laterally outside the heating element which is designed as a radiant heater and has a cup-shaped housing and is e.g. connected to the heating element housing by means of a pocket-shaped holder.
  • the invention has for its object to improve the positioning of the light guide with respect to the heating element.
  • the integration of the light guide in the heating element results in a comparatively low thermal stress on the glass material when the heating element is in operation and one obtains a very simple arrangement and assembly of the light guide inside the heating element without additional holding elements or the like Heating element, wherein the ring-shaped or cup-shaped insulation support also serves as a holder for the light guide.
  • a further design and assembly simplification results from the fact that the glass ring serving as a light guide forms the side wall of a cup-shaped glass body that receives the insulation insert or carries a reflection coating.
  • 1 denotes a support which covers the hob and is made of glass-ceramic, partially transparent material, below which, as a rule, a plurality of heating elements 2 are arranged at a distance from one another.
  • the heating element consists of a cup-shaped, upwardly open housing 3 made of sheet metal material, in which an essentially flat insulation insert 5 carrying electrical heating coils 4 and an edge-side one-piece or separate ring-shaped insulation insert 6 are arranged on the bottom of the bowl.
  • This heating element 2 is pressed in a manner not shown, against the underside of the glass-ceramic carrier 1, the inner surface of the annular insulation insert 6 determining a cooking or storage surface for pots or the like which can be heated by the electric heating coils 4.
  • the outer diameter of the insulation insert 6 serving as a wall element of the insulation insert 5/6 is slight, for example a few millimeters smaller than the inside diameter of the housing 3, so that an annular gap 7 is present between the insulation insert 6 and the housing 3, in which a light guide designed as a glass ring is present 8 arranged, for example inserted or pressed or embedded.
  • the light guide 8, which is preferably in the form of a closed glass ring, has a vertical extent which essentially corresponds to the housing height and is provided with at least one opening 9, into which a light source 10 of a lighting device (not shown) projects.
  • the light source can be designed as an incandescent or glow lamp and is connected via a connection element 11 and electrical lines to a control device (not shown), for example to a device for indicating residual heat, the lighting device has a temperature-dependent switch which switches on the light source 10 from a safety temperature of, for example, 50 ° C. and thus signals that the support surface 1 should not be touched.
  • the light rays emanating from the light source 10 are guided in the light guide 8, as a result of which the entire light guide has a lighting effect in the direction of the glass-ceramic carrier 1, by means of which the above-mentioned footprint is simultaneously optically identified.
  • a so-called residual heat indicator it can be provided that the lighting device is switched on simultaneously with the switching on of the heating element.
  • the housing 12 of the heating element 2 ' is designed as a one-piece glass body and has a cup-like shape, which is suitable for receiving the insulating insert or inserts 5, 6.
  • the cylindrical side wall 13 represents a light guide, the lighting technology is in turn connected via the opening 9 to the lighting device described above.
  • the exemplary embodiment according to FIG. 3 differs from FIG. 2 only in the arrangement of the light source 10.
  • the glass body 12 is provided in the upwardly open container 13 on the underside of the bottom surface, the open side of which rests on the bottom surface and has a lamp holder 18 for the light source 10.
  • the inside or part of the container can be provided with a light-reflecting surface.
  • This central arrangement of the light source 10, preferably central with respect to the glass body 12, results in a very intensive and uniform illumination of the light guide and a good optical effect.
  • the glass ring forming the light guide in the form of the separate ring part in FIG. 1 or the side wall 13 in FIG. 2 on the side ring surfaces 14, 15 and / or on the lower ring surface 16 (FIG. 1) has a reflective coating, e.g. is mirrored at this point, so that the light flowing through the light guide is reflected very strongly upwards and on the other hand the lateral thermal insulation of the heating element is reinforced.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Resistance Heating (AREA)
  • General Preparation And Processing Of Foods (AREA)
  • Cookers (AREA)
  • Electric Stoves And Ranges (AREA)
EP92116753A 1991-11-07 1992-09-30 Plaque de cuisson Expired - Lifetime EP0540876B1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE4136702 1991-11-07
DE4136702 1991-11-07
DE4139508 1991-11-29
DE4139508A DE4139508C2 (de) 1991-11-07 1991-11-29 Kochfeld

Publications (3)

Publication Number Publication Date
EP0540876A2 true EP0540876A2 (fr) 1993-05-12
EP0540876A3 EP0540876A3 (en) 1993-06-02
EP0540876B1 EP0540876B1 (fr) 1997-12-03

Family

ID=25908896

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92116753A Expired - Lifetime EP0540876B1 (fr) 1991-11-07 1992-09-30 Plaque de cuisson

Country Status (4)

Country Link
EP (1) EP0540876B1 (fr)
AT (1) ATE160916T1 (fr)
ES (1) ES2112285T3 (fr)
GR (1) GR3025957T3 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2301760A (en) * 1995-06-01 1996-12-11 Ceramaspeed Ltd Light indicator arrangement in an electric cooking plate
EP0757210A1 (fr) * 1995-07-29 1997-02-05 E.G.O. ELEKTRO-GERÄTEBAU GmbH Unité d'une table de suisson à rayonnement
US6369365B1 (en) 1999-02-18 2002-04-09 Schott Glas Glass-ceramic panel providing a cooking surface with a cooking zone indicating device and method of making same
WO2008042805A2 (fr) * 2006-09-29 2008-04-10 Bose Corporation Affichage d'informations concernant la cuisson

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1346574A (fr) * 1970-03-24 1974-02-13
GB2170002A (en) * 1985-01-17 1986-07-23 Licentia Gmbh Ceramic hob
EP0265635A1 (fr) * 1986-10-17 1988-05-04 E.G.O. Elektro-Geräte Blanc u. Fischer Elément chauffant à radiation
EP0359028A1 (fr) * 1988-09-14 1990-03-21 E.G.O. Elektro-Geräte Blanc u. Fischer Installation de chauffage
EP0438656A2 (fr) * 1990-01-26 1991-07-31 Bosch-Siemens HausgerÀ¤te GmbH Plaque de cuisson
DE4004309A1 (de) * 1990-02-13 1991-08-14 Ego Elektro Blanc & Fischer Anzeigeeinrichtung fuer kochgeraete
EP0499972A1 (fr) * 1991-02-22 1992-08-26 MMG GLASTECHNIK GmbH Anneau lumineux pour l'indication les aires de cuisson d'une plaque de cuisson en vitro-céramique

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1346574A (fr) * 1970-03-24 1974-02-13
GB2170002A (en) * 1985-01-17 1986-07-23 Licentia Gmbh Ceramic hob
EP0265635A1 (fr) * 1986-10-17 1988-05-04 E.G.O. Elektro-Geräte Blanc u. Fischer Elément chauffant à radiation
EP0359028A1 (fr) * 1988-09-14 1990-03-21 E.G.O. Elektro-Geräte Blanc u. Fischer Installation de chauffage
EP0438656A2 (fr) * 1990-01-26 1991-07-31 Bosch-Siemens HausgerÀ¤te GmbH Plaque de cuisson
DE4004309A1 (de) * 1990-02-13 1991-08-14 Ego Elektro Blanc & Fischer Anzeigeeinrichtung fuer kochgeraete
EP0499972A1 (fr) * 1991-02-22 1992-08-26 MMG GLASTECHNIK GmbH Anneau lumineux pour l'indication les aires de cuisson d'une plaque de cuisson en vitro-céramique

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2301760A (en) * 1995-06-01 1996-12-11 Ceramaspeed Ltd Light indicator arrangement in an electric cooking plate
US5750959A (en) * 1995-06-01 1998-05-12 Ceramaspeed Limited Electric heater
GB2301760B (en) * 1995-06-01 1999-09-22 Ceramaspeed Ltd Electric heater
EP0757210A1 (fr) * 1995-07-29 1997-02-05 E.G.O. ELEKTRO-GERÄTEBAU GmbH Unité d'une table de suisson à rayonnement
US5900175A (en) * 1995-07-29 1999-05-04 E.G.O. Elektro-Geratebau Gmbh Radiant cooking unit
US6369365B1 (en) 1999-02-18 2002-04-09 Schott Glas Glass-ceramic panel providing a cooking surface with a cooking zone indicating device and method of making same
WO2008042805A2 (fr) * 2006-09-29 2008-04-10 Bose Corporation Affichage d'informations concernant la cuisson
WO2008042805A3 (fr) * 2006-09-29 2008-08-21 Bose Corp Affichage d'informations concernant la cuisson
US7554060B2 (en) 2006-09-29 2009-06-30 England Raymond O Displaying cooking-related information

Also Published As

Publication number Publication date
GR3025957T3 (en) 1998-04-30
EP0540876A3 (en) 1993-06-02
ATE160916T1 (de) 1997-12-15
EP0540876B1 (fr) 1997-12-03
ES2112285T3 (es) 1998-04-01

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