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EP0069298A1 - Plaque chauffante - Google Patents

Plaque chauffante Download PDF

Info

Publication number
EP0069298A1
EP0069298A1 EP82105607A EP82105607A EP0069298A1 EP 0069298 A1 EP0069298 A1 EP 0069298A1 EP 82105607 A EP82105607 A EP 82105607A EP 82105607 A EP82105607 A EP 82105607A EP 0069298 A1 EP0069298 A1 EP 0069298A1
Authority
EP
European Patent Office
Prior art keywords
hotplate
cooking plate
plate according
resistance layer
layer
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
EP82105607A
Other languages
German (de)
English (en)
Other versions
EP0069298B1 (fr
Inventor
Robert Kicherer
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.)
EGO Elektro Geratebau GmbH
Original Assignee
EGO Elektro Gerate Blanc und Fischer GmbH
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 EGO Elektro Gerate Blanc und Fischer GmbH filed Critical EGO Elektro Gerate Blanc und Fischer GmbH
Priority to AT82105607T priority Critical patent/ATE21755T1/de
Publication of EP0069298A1 publication Critical patent/EP0069298A1/fr
Application granted granted Critical
Publication of EP0069298B1 publication Critical patent/EP0069298B1/fr
Expired 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
    • H05B3/74—Non-metallic plates, e.g. vitroceramic, ceramic or glassceramic hobs, also including power or control circuits
    • H05B3/748—Resistive heating elements, i.e. heating elements exposed to the air, e.g. coil wire heater
    • 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 invention relates to a hotplate with a flat hotplate body which has an essentially flat upper and lower side in the heated area, an electric heating applied to the underside of the hotplate body, and optionally a base plate and / or an upper case edge.
  • the invention has for its object to provide a hotplate of the type mentioned, which is particularly simple in construction and just as easy to manufacture, which has the lowest possible heat capacity, and guarantees a very short heating time with relatively low electrical connection values.
  • the invention proposes that, in the case of a hotplate of the type mentioned at the outset, the hotplate body is formed from a flat substrate made of highly heat-conducting, electrically insulating material, on the underside of which a layer of resistance material is applied.
  • the hotplate body advantageously consists of ceramic, for example of magnesium oxide, aluminum oxide or another suitable technical ceramic, such as KER 520. It is also advantageous to use baked reaction-bonded or hot-pressed silicon nitride. This material has a low coefficient of expansion with good thermal conductivity and exceptional thermal shock resistance. Due to the high to sufficient mechanical strength, their high insulation values and good thermal conductivity at the same time, it is possible to make the hotplate body thin, so that the hotplate constructed in this way has a practically vanishingly small heat has capacity. Therefore, a parboil can take place very quickly without consuming too much electrical power.
  • the resistance layer is preferably evaporated in vacuo. However, it is particularly favorable if it is printed using the screen printing method.
  • the resistance consists of a so-called cermet layer, in which platinum, rhodium or another suitable metal in oxide form is mixed in powder form in a glass frit.
  • one or more temperature-dependent substances with a negative (NTC) or positive (PTC) resistance coefficient can be applied in the same screen printing process.
  • the resistance value of the layer is matched by reducing the cross section. This can be done in particular with the aid of a laser.
  • the ceramic substrate is advantageously colored. This makes it possible to give the hotplate an attractive appearance.
  • the resistance layer is divided into individual areas that are isolated or isolatable from one another. This makes it possible to use both individual areas of the hotplate surface and combinations to be heated separately from areas.
  • the innermost region can have a circular shape, while a plurality of circular ring regions can be connected, which thus enable the diameter of the hotplate in operation to be increased.
  • the resistance layer has areas of different electrical surface stress.
  • the heat given off by the individual areas can be adapted to the requirements of cooking. For example, it is possible to heat the outside area of a round cooking surface more strongly, which is particularly advantageous if commercially available cooking pots are used, which generally only rest on the outside of the outer ring of the cooking plate.
  • the areas are ring-shaped or circular.
  • the invention proposes that thermal insulation is arranged below the resistance layer, i.e. between the resistance layer and any floor panel that may be present.
  • the electrical connection lines are advantageously brazed onto the resistance layer or an additional silver plating. This is a particularly cheap, space-saving and inexpensive type of fastening, since no additional terminals are required at this point.
  • Silvering can also be produced in the manufacturing process of the resistance layer. It is also possible as Contacting a silver-palladium layer, also by screen printing, onto which, for example, a metal bracket made of nickel sheet is then soldered. Electrical assembly by conventional resistance welding can then be carried out at this angle. It is also possible to evaporate a nickel layer as a contact in a vacuum, onto which a metal angle is then welded, for example in a laser process.
  • strain relief of these connections is advantageously taken up by the downward leg of the rim.
  • the invention further proposes that the downward leg of the rim be provided with at least two bolts which are used to attach the hotplate in the dish with the aid of the attachment plate or of the bottom plate are provided.
  • the attachment of the substrate to the rim of the overflow can also be carried out extremely easily, since according to the invention the heated plate is preferably glued tightly with a ceramic adhesive into the rim of the overflow. It is particularly advantageous when the coefficient of expansion of the upper edge of the case is equal to that of the heated plate.
  • the areas of the resistance layer have the shape of circular or circular ring sectors.
  • a circular shape as it would have a normal hotplate, can be formed by eight circular sectors of equal size, one connecting line being connected in the middle of the circle and the other on the circumference of the circle.
  • the regions of the resistance layer are formed in the form of circular or circular ring sectors, they alternately have incisions on both sides. These incisions reduce the cross-section in the surface direction, the regions of the resistance layer thus formed taking the form of a meander. It is preferably provided that two sectors are symmetrical to each other with respect to their dividing line.
  • a hotplate with its upper rim 12 is inserted into an opening in a hob 11.
  • This overflow edge has a circumferential, approximately horizontal section 13, the outer edge of which is bent downwards.
  • a sealing ring 15 is inserted between section 13 and section 14 of the hob 11.
  • the overhang edge 12 has a shoulder 16 which is intended to receive the hotplate body 17.
  • the overhang edge 12 On its side of the shoulder 16 facing the center point, the overhang edge 12 has a circumferential flat-cylindrical leg 18, to which three screw bolts 19 are fastened, distributed over the circumference. Only one of these three bolts can be seen in FIG. 1.
  • a base plate 20 is arranged below the hotplate and has a number of openings corresponding to the number of screw bolts 19 through which the screw bolt 19 extends.
  • a nut 21 and a washer 22 are screwed onto the screw bolt 19, with this screw connection pressing the base plate with its peripheral edge 23 against the underside of the hob 11. In this way, the overhang edge 12 and the base plate 20 are attached to the hob 11.
  • the bottom plate 20 has on its top, i.e. on its side facing the hotplate, a relatively thick layer 26 of insulating material, which has a circumferential annular groove 29 for receiving the leg 18 of the rim 12.
  • a resistance layer 27 is applied to the underside of the hotplate body 17, for example printed on with the aid of a screen printing process.
  • This resistance layer 27 is applied directly to the hotplate body 17, since it consists of electrically insulating material.
  • a thin protective layer 28 is applied to the underside of the resistance layer 27, which protects the resistance layer 27 from mechanical damage.
  • Fig. 3 shows the view of the hotplate body 17 in Fig. 1 from below.
  • the upper rim 12 is not shown.
  • the resistance layer 27 consists of a total of eight circular ring sectors 30. Each of these sectors 30 extends over an angle of approximately 45 °. If one looks at the two upper sectors in FIG. 3, it can clearly be seen that they are constructed symmetrically to the dividing line 31. Incisions 32, 33 and 34 are made in each sector, each extending along a concentric circular arc and giving each sector 30 a meandering appearance.
  • a star-like silvering 35 with four beams is applied, the four beams 36 each engaging in a joint between two sectors 30.
  • This silvering 35 connects the one wire, which is not shown for the sake of simplicity, while the second wire engages the four silvering 37 from the outside, which are also arranged in joints between two sectors.
  • the specific surface loading of the sectors 30 decreases from the outside inwards.

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)
  • Baking, Grill, Roasting (AREA)
  • Control And Other Processes For Unpacking Of Materials (AREA)
  • Surface Heating Bodies (AREA)
  • Polishing Bodies And Polishing Tools (AREA)
  • Cookers (AREA)
  • Electric Stoves And Ranges (AREA)
  • Macromolecular Compounds Obtained By Forming Nitrogen-Containing Linkages In General (AREA)
  • Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
  • Formation And Processing Of Food Products (AREA)
  • Vending Machines For Individual Products (AREA)
EP82105607A 1981-07-08 1982-06-25 Plaque chauffante Expired EP0069298B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT82105607T ATE21755T1 (de) 1981-07-08 1982-06-25 Kochplatte.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19813126989 DE3126989A1 (de) 1981-07-08 1981-07-08 Kochplatte
DE3126989 1981-07-08

Publications (2)

Publication Number Publication Date
EP0069298A1 true EP0069298A1 (fr) 1983-01-12
EP0069298B1 EP0069298B1 (fr) 1986-08-27

Family

ID=6136429

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82105607A Expired EP0069298B1 (fr) 1981-07-08 1982-06-25 Plaque chauffante

Country Status (11)

Country Link
US (1) US4527050A (fr)
EP (1) EP0069298B1 (fr)
JP (1) JPS5819213A (fr)
AT (1) ATE21755T1 (fr)
AU (1) AU547824B2 (fr)
DE (2) DE3126989A1 (fr)
ES (1) ES274583Y (fr)
FI (1) FI81235C (fr)
GR (1) GR76841B (fr)
YU (1) YU44352B (fr)
ZA (1) ZA824570B (fr)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3539425A1 (de) * 1985-11-07 1987-05-14 Limitor Ag Thermobimetallschalter
DE3728466A1 (de) * 1987-08-26 1989-03-09 Ego Elektro Blanc & Fischer Kochgeraet
WO1996009738A1 (fr) * 1994-09-20 1996-03-28 Negawatt Gmbh Corps de chauffe electrique
DE19503723A1 (de) * 1995-02-04 1996-08-08 Ego Elektro Blanc & Fischer Kochplatte mit einem Gußköprer und Verfahren zu ihrer Herstellung
EP0911586A2 (fr) 1997-10-23 1999-04-28 Schott Glas Montage d'un élément chauffant de cuisson en céramique dans un orifice d'une table de cuisson
EP0916899A3 (fr) * 1997-10-23 1999-07-21 Schott Glas Disposition d'un élément céramique de chauffage en tant que zone de cuisson dans un évidement de surface
DE19814949C2 (de) * 1997-05-07 2002-04-18 Aeg Hausgeraete Gmbh Gareinrichtung mit Induktionsbeheizung und Widerstandsbeheizung
DE10110789C1 (de) * 2001-03-06 2002-07-04 Schott Glas Kochgerät mit einer nicht planaren, mehrdimensional geformten Kochfläche aus Glas- oder Glaskeramik
DE10207515B4 (de) * 2002-02-22 2004-12-02 Schott Ag Kochsystem mit einer Kochfläche und einer Halterung
DE10344860A1 (de) * 2003-09-26 2005-04-28 Electrolux Home Prod Corp Heizvorrichtung für ein Gargerät oder dergleichen
FR3005388A1 (fr) * 2013-05-03 2014-11-07 Topinox Sarl Element de chauffage a sections ayant differentes puissances de chauffage, et appareil de cuisson.

Families Citing this family (31)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3302794A1 (de) * 1983-01-28 1984-08-02 Miele & Cie GmbH & Co, 4830 Gütersloh Backmuffel fuer einen elektroherd
DE3302795A1 (de) * 1983-01-28 1984-08-02 Miele & Cie GmbH & Co, 4830 Gütersloh Kochplattenausbildung
GB2138935B (en) * 1983-04-22 1987-11-18 Redring Electric Ltd Electric hobs
DE3321783A1 (de) * 1983-06-16 1984-12-20 Boehringer Mannheim Gmbh, 6800 Mannheim Anordnung zum auswerten eines teststreifens
DE3341194C2 (de) * 1983-11-14 1986-08-14 Bosch-Siemens Hausgeräte GmbH, 7000 Stuttgart Verfahren zum Herstellen einer Kochmulde, Vorrichtung zur Durchführung des Verfahrens und mittels der Vorrichtung hergestellte Kochmulde
DE3409925A1 (de) * 1984-03-17 1985-09-26 Robert Krups Stiftung & Co KG, 5650 Solingen Heizkoerper fuer haushaltgeraete
ES278931Y (es) * 1984-04-18 1985-06-01 Teka Industrial, S.A. Dispositivo de fijacion superior rapida de placa electrica
DE3545453A1 (de) * 1985-12-20 1987-07-02 Bosch Siemens Hausgeraete Heizelement fuer thermische hausgeraete, vorzugsweise fuer kochstellen
DE3545454A1 (de) * 1985-12-20 1987-07-02 Bosch Siemens Hausgeraete Heizelement fuer thermische hausgeraete, insb. fuer kochstellen
DE3545442A1 (de) * 1985-12-20 1987-06-25 Bosch Siemens Hausgeraete Heizelement fuer thermische hausgeraete, insbesondere fuer kochstellen
DE3545445A1 (de) * 1985-12-20 1987-06-25 Bosch Siemens Hausgeraete Heizelement insb. fuer kochstellen
DE3545443A1 (de) * 1985-12-20 1987-06-25 Bosch Siemens Hausgeraete Kochstellenheizelement
DE3800676A1 (de) * 1988-01-13 1989-07-27 Eichenauer Gmbh & Co Kg F Heizvorrichtung, insbesondere als kochplatte
US5225663A (en) * 1988-06-15 1993-07-06 Tel Kyushu Limited Heat process device
DE3918621A1 (de) * 1989-06-07 1990-12-13 Bosch Siemens Hausgeraete Kochmulde fuer elektroherde, kochplatten oder dgl.
DE4303217A1 (de) * 1993-02-04 1994-08-11 Sios Mestechnik Gmbh Vorrichtung zur Frequenzstabilisierung von He-Ne-Innenspiegellasern
US5539856A (en) * 1994-01-13 1996-07-23 Black & Decker Inc. Electric coffeemaker with keep warm control responsive to the amount of coffee brewed
TW444922U (en) * 1994-09-29 2001-07-01 Tokyo Electron Ltd Heating device and the processing device using the same
EP0853444B1 (fr) * 1997-01-10 2005-11-23 E.G.O. ELEKTRO-GERÄTEBAU GmbH Système à cuire avec une plaque de cuisson électrique, transférant la chaleur par conduction
DE29702418U1 (de) * 1997-02-13 1997-03-27 Schott Glaswerke, 55122 Mainz Kochgerät mit Glaskeramikkochfläche mit Schnellkochzone
DE29714770U1 (de) * 1997-08-18 1997-11-27 Rieker Elektronik, 72285 Pfalzgrafenweiler Heizeinrichtung für ein Elektrogerät und Elektrogerät zum Erwärmen einer Flüssigkeit
FR2771616B1 (fr) * 1997-11-28 2000-12-22 Moulinex Sa Appareil electrique de cuisson, en particulier friteuse, comportant un element chauffant plat a resistance serigraphiee
DE19820108C2 (de) * 1998-05-06 2001-03-15 Schott Glas Anordnung eines wärmeleitenden keramischen Trägers mit einem Heizkörper als Kochzone in einer Aussparung einer Kochfläche
JP2001297857A (ja) * 1999-11-24 2001-10-26 Ibiden Co Ltd 半導体製造・検査装置用セラミックヒータ
DE10111734A1 (de) * 2001-03-06 2002-09-26 Schott Glas Keramisches Kochsystem mit Glaskeramikplatte, Isolationsschicht und Heizelementen
DE20117517U1 (de) 2001-10-25 2002-02-21 Rauschert Gmbh & Co. Kg, 96332 Pressig Mobiles Universalkochgerät
FR2833256B1 (fr) * 2001-12-11 2004-09-17 Snc Eurokera Plaques vitroceramiques, plaques de cuisson les comprenant et leurs procedes de fabrication
DE10250317B4 (de) * 2002-10-29 2004-10-28 Schott Glas Glas- oder Glaskeramikplatte mit einer elektrischen Heizeinheit
IL164989A0 (en) * 2004-11-02 2005-12-18 Moshe Neger A food warming tray
JP2015000262A (ja) * 2013-06-17 2015-01-05 住友電気工業株式会社 加熱用調理器
KR102091251B1 (ko) * 2018-08-21 2020-03-19 엘지전자 주식회사 전기 히터

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Publication number Priority date Publication date Assignee Title
DE1690557A1 (de) * 1968-02-01 1971-06-03 Duras Herbert Heizkoerper,insbesondere Elektro-Massekochplatte und Verfahren zu deren Herstellung
DE2215798B2 (de) * 1972-03-30 1975-12-18 Internationale Laboratoriums-Apparate Gmbh, 7801 Ballrechten-Dottingen Magnetrührgerät
DE2411663A1 (de) * 1973-03-28 1974-10-10 Corning Glass Works Elektrische heizplatte
DE2355412B2 (de) * 1973-11-06 1975-11-20 Bosch-Siemens Hausgeraete Gmbh, 7000 Stuttgart Elektrisch beheizte Herdmulde
DE2524840A1 (de) * 1975-01-31 1976-08-05 Representaciones Unidas S A Er Elektrische heizplatte

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3539425A1 (de) * 1985-11-07 1987-05-14 Limitor Ag Thermobimetallschalter
DE3728466A1 (de) * 1987-08-26 1989-03-09 Ego Elektro Blanc & Fischer Kochgeraet
WO1996009738A1 (fr) * 1994-09-20 1996-03-28 Negawatt Gmbh Corps de chauffe electrique
DE19503723A1 (de) * 1995-02-04 1996-08-08 Ego Elektro Blanc & Fischer Kochplatte mit einem Gußköprer und Verfahren zu ihrer Herstellung
DE19814949C2 (de) * 1997-05-07 2002-04-18 Aeg Hausgeraete Gmbh Gareinrichtung mit Induktionsbeheizung und Widerstandsbeheizung
EP0911586A2 (fr) 1997-10-23 1999-04-28 Schott Glas Montage d'un élément chauffant de cuisson en céramique dans un orifice d'une table de cuisson
EP0916899A3 (fr) * 1997-10-23 1999-07-21 Schott Glas Disposition d'un élément céramique de chauffage en tant que zone de cuisson dans un évidement de surface
DE10110789C1 (de) * 2001-03-06 2002-07-04 Schott Glas Kochgerät mit einer nicht planaren, mehrdimensional geformten Kochfläche aus Glas- oder Glaskeramik
DE10207515B4 (de) * 2002-02-22 2004-12-02 Schott Ag Kochsystem mit einer Kochfläche und einer Halterung
DE10344860A1 (de) * 2003-09-26 2005-04-28 Electrolux Home Prod Corp Heizvorrichtung für ein Gargerät oder dergleichen
DE10344860B4 (de) * 2003-09-26 2008-06-26 Electrolux Home Products Corp. N.V. Heizvorrichtung für ein Gargerät
FR3005388A1 (fr) * 2013-05-03 2014-11-07 Topinox Sarl Element de chauffage a sections ayant differentes puissances de chauffage, et appareil de cuisson.

Also Published As

Publication number Publication date
ZA824570B (en) 1983-04-27
JPS5819213A (ja) 1983-02-04
FI81235C (fi) 1990-09-10
ES274583Y (es) 1984-10-01
DE3126989A1 (de) 1983-01-27
ES274583U (es) 1984-02-16
FI822371L (fi) 1983-01-09
GR76841B (fr) 1984-09-04
YU44352B (en) 1990-06-30
EP0069298B1 (fr) 1986-08-27
ATE21755T1 (de) 1986-09-15
AU8535382A (en) 1983-01-13
AU547824B2 (en) 1985-11-07
FI81235B (fi) 1990-05-31
JPH0522353B2 (fr) 1993-03-29
US4527050A (en) 1985-07-02
DE3272881D1 (en) 1986-10-02
FI822371A0 (fi) 1982-07-02
YU148682A (en) 1984-12-31

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