EP1368992B1 - Keramisches kochsystem mit glaskeramikplatte, isolationsschicht und heizelementen - Google Patents

Keramisches kochsystem mit glaskeramikplatte, isolationsschicht und heizelementen Download PDF

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Publication number
EP1368992B1
EP1368992B1 EP02702371A EP02702371A EP1368992B1 EP 1368992 B1 EP1368992 B1 EP 1368992B1 EP 02702371 A EP02702371 A EP 02702371A EP 02702371 A EP02702371 A EP 02702371A EP 1368992 B1 EP1368992 B1 EP 1368992B1
Authority
EP
European Patent Office
Prior art keywords
insulation
cooking system
insulation layer
heating elements
segments
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.)
Expired - Lifetime
Application number
EP02702371A
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German (de)
English (en)
French (fr)
Other versions
EP1368992A1 (de
Inventor
Karsten Wermbter
Holger Köbrich
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.)
Schott AG
Original Assignee
Carl-Zeiss-Stiftung trading as SCHOTT GLASS
Carl Zeiss AG
Schott Glaswerke AG
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 Carl-Zeiss-Stiftung trading as SCHOTT GLASS, Carl Zeiss AG, Schott Glaswerke AG filed Critical Carl-Zeiss-Stiftung trading as SCHOTT GLASS
Publication of EP1368992A1 publication Critical patent/EP1368992A1/de
Application granted granted Critical
Publication of EP1368992B1 publication Critical patent/EP1368992B1/de
Anticipated expiration legal-status Critical
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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

Definitions

  • the invention relates to a ceramic cooking system with a glass ceramic plate, the on its underside an electrical insulation layer with one or more Heating elements for direct heating of the glass ceramic plate carries, the Isolation layer is divided into several isolation segments, which over the Extend the cooking zone and wear individual heating elements.
  • a ceramic cooking system of this type is known from GB-A-2 288 110.
  • heating elements are arranged radially and connected in parallel, so that they can only be switched on and off together.
  • Ceramic cooking systems usually consist of a flat glass ceramic plate, on the top of which the cooking vessel to be heated is placed.
  • the Glass ceramic plates include oxidic and non-oxidic ceramics such as the WO 00/15005, FR 2 744 116, EP 0 861 014 A1 and US 6,037,572 can be seen.
  • an insulation layer for electrical insulation is applied between the glass ceramic plate and the heating elements.
  • Suitable materials for this insulation layer are materials with a high electrical insulation value, especially AL 2 O 3 -SiO 2 -M g O material systems with materials such as corundum, mullite, periclase, spinel and cordierite.
  • the heating elements are applied to the insulation layer.
  • Thin layers can be provided over the entire surface as heating elements by sputtering or in the CVD process, S n O 2 being used in particular, as WO 00/18 189 shows.
  • Another possibility is to apply thick-film conductor tracks from silver-palladium alloys in the screen printing process, as from EP 0 861 014 A1 and EP 0 069 218 A1.
  • the application of the insulation layer prepares difficulties on the underside of the glass ceramic plate because this not only has to adhere very firmly to the glass ceramic plate, it also has to be high have electrical insulation with good thermal conductivity. This requires usually a compromise that is not fully satisfactory.
  • Insulation layers applied for a ceramic cooking system made of AL 2 O 3 , spinel, ZrO 2 or M g O are known as thick layers and have a high insulation effect. Since they have a significantly larger expansion coefficient than the glass ceramic plate, great stresses arise in the insulation layer during heating, which can lead to a partial loosening of the adhesion to the glass ceramic plate.
  • This object of the invention is achieved in that the insulation layer-free Place the underside of the glass ceramic plate sensor tracks for temperature measurement are upset.
  • This structure of the cooking system with glass ceramic plate, insulation layer and heating elements allows individual control and switching of the heating elements without adversely affecting the mechanical properties.
  • the subdivision of the insulation layer into several insulation segments ie the subdivision of the cooking zone into several sub-zones, creates small-area insulation areas.
  • the dimensions of the assigned insulation segments are such that no high mechanical stresses can form in them, which can lead to a partial detachment from the underside of the glass plate during heating. This means that materials with a high insulation effect but good heat transfer can be used as thick layers without the risk of errors occurring.
  • the insulation segments are applied as a layer with a thickness of 100 to 400 ⁇ m made of AL 2 O 3 , mullite or cordierite, ZrO 2 .
  • insulation elements at least partially via insulation bridges for the Connection interconnects are connected to each other on the insulation segments applied, segmentation-specific heating elements in the desired Way. You can use the insulation layer-free Place the glass ceramic plate on the individual sensor segments Temperature measurements are made.
  • Various patterns can be implemented for the subdivision of the insulation layer. It can be provided that the subdivision of the insulation layer into Circular-cut insulation segments arranged concentrically to one another is made.
  • a particularly favorable subdivision can be made so that the subdivision the insulation layer into a central, approximately disc-shaped Isolation segment with sector-shaped recess for connecting cables and several circular segment-shaped enclosing the disc-shaped insulation segment Isolation segments is made.
  • a temperature measurement can be carried out centrally in the cooking zone be an advantage.
  • the design is carried out in such a way that the disc-shaped insulation segment in the center has a recess for Has application of a sensor track.
  • One embodiment provides that the segment-specific heating elements applied as electrically conductive thick-film conductor tracks and over as thick-film conductor tracks trained connecting conductor tracks in the desired Are connected to each other in an electrically conductive manner.
  • the heating elements are not only used as thick-film heating conductors but can also be designed as full-surface heating foils that are sized and shape of the insulation segments are adapted.
  • each is provided on and on the glass ceramic plate 10 whose top marked cooking zone on the bottom 11 a divided Insulation layer assigned congruently.
  • the subdivision sees a central, approximately disc-shaped insulation segment 12 in front, the one starting from a central recess 18 (FIG. 2) has free radial sector 15.
  • Around this centric isolation segment 12 are four circular segment-shaped insulation segments 13.1, 13.2, 13.3 and 13.4 distributed, with between the insulation segments 13.2 and 13.3 another sector 16 remains free.
  • This sector 16 extends sector 15 and provides access for the electrical connection of the heating elements.
  • the isolation segments 13.1 and 13.2 are connected to each other via an insulation bridge 14.1.
  • the insulation bridge 14.2 connects the insulation segments 13.3 and 13.4, while the insulation bridge 14.3, the insulation segments 13.4 and 13.1 with each other combines.
  • the areas without insulation layers between the insulation segments 12, 13.1, 13.2, 13.3 and 13.4 can be used for temperature measurement Seonsorbahnen 40, 41 and 42 wear, with which sub-zone-specific temperatures can be recorded, to be able to switch and regulate the heating elements individually for each zone.
  • the connecting lines 21 and 22 are in the energization of the on centric insulation segment 20 applied heating element 20 driven.
  • the heating elements 30.1, 30.2, 30.3 and 30.4 on the insulation segments 13.1, 13.2, 13.3 and 13.4 are connected in series (one behind the other), the connecting thick-film conductor tracks 33.1, 33.2 and 33.3 on the insulation bridges 14.1, 14.2 and 14.3 complete the series connection.
  • the series-connected heating elements 30.1, 30.2, 30.3 and 30.4 are over Connection lines 31 and 32 controlled and energized.
  • the isolation segments 12, 13.1, 13.2, 13.3 and 13.4 can be kept small in this way, resulting in heating Much smaller mechanical stresses occur, such as with a closed, insulation layer covering the entire cooking zone. It can therefore Materials used for the insulation segments, the higher one Expansion coefficients, but higher insulation and than thinner Layer have more favorable heat transfer properties.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Resistance Heating (AREA)
  • Surface Heating Bodies (AREA)
  • Cookers (AREA)
  • Electric Stoves And Ranges (AREA)
EP02702371A 2001-03-06 2002-02-27 Keramisches kochsystem mit glaskeramikplatte, isolationsschicht und heizelementen Expired - Lifetime EP1368992B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10110792A DE10110792B4 (de) 2001-03-06 2001-03-06 Keramisches Kochsystem mit Glaskeramikplatte,Isolationsschicht und Heizelementen
DE10110792 2001-03-06
PCT/EP2002/002060 WO2002071803A1 (de) 2001-03-06 2002-02-27 Keramisches kochsystem mit glaskeramikplatte, isolationsschicht und heizelementen

Publications (2)

Publication Number Publication Date
EP1368992A1 EP1368992A1 (de) 2003-12-10
EP1368992B1 true EP1368992B1 (de) 2004-10-20

Family

ID=7676507

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02702371A Expired - Lifetime EP1368992B1 (de) 2001-03-06 2002-02-27 Keramisches kochsystem mit glaskeramikplatte, isolationsschicht und heizelementen

Country Status (9)

Country Link
US (1) US20040238525A1 (da)
EP (1) EP1368992B1 (da)
CN (1) CN1494818A (da)
AT (1) ATE280484T1 (da)
CA (1) CA2439569A1 (da)
DE (2) DE10110792B4 (da)
DK (1) DK1368992T3 (da)
ES (1) ES2230466T3 (da)
WO (1) WO2002071803A1 (da)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10344860B4 (de) * 2003-09-26 2008-06-26 Electrolux Home Products Corp. N.V. Heizvorrichtung für ein Gargerät
ES2350212B1 (es) * 2008-12-19 2011-11-11 Bsh Electrodomesticos España, S.A. Radiador para un aparato domestico.
ES2352137B1 (es) * 2008-12-19 2012-01-26 Bsh Electrodomésticos España, S.A. Placa de cocción iluminada.
US10531521B2 (en) 2014-08-27 2020-01-07 Aselsan Elektronik Sanayi Ve Ticaret Anonim Sirketi Specific heater circuit track pattern coated on a thin heater plate for high temperature uniformity
CN106686773B (zh) * 2016-01-06 2019-09-10 黄伟聪 一种双面高导热能力的厚膜发热元件
CN110215173B (zh) * 2019-05-27 2025-04-18 安徽苏立科技股份有限公司 一种洗碗机发热盘及其加工工艺
CN110351905B (zh) * 2019-07-23 2024-08-02 安徽苏立科技股份有限公司 一种厚膜发热盘
CN110337154B (zh) * 2019-07-23 2024-08-02 安徽苏立科技股份有限公司 一种三相厚膜发热盘
CN111315048B (zh) * 2020-04-16 2025-04-15 文安县地银木业有限公司 一种加热圈专用陶瓷纤维板

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1432491A (en) * 1919-03-24 1922-10-17 Sebring I Phelps Electric heater
US4286377A (en) * 1978-07-03 1981-09-01 General Electric Company Method of manufacture for a resistance heater and temperature sensor
FR2623684A1 (fr) * 1987-11-24 1989-05-26 Labo Electronique Physique Element chauffant en vitroceramique
AT408299B (de) * 1994-03-30 2001-10-25 Electrovac Heizvorrichtung für elektrische heizplatten, zündeinrichtungen, temperatursensoren od. dgl.
TW444922U (en) * 1994-09-29 2001-07-01 Tokyo Electron Ltd Heating device and the processing device using the same
FR2744116B3 (fr) * 1996-01-31 1998-03-13 Eurokera Substrat destine a equiper un dispositif de cuisson et/ou de maintien en temperature
DE19701640A1 (de) * 1997-01-10 1998-07-16 Ego Elektro Geraetebau Gmbh Kontaktwärmeübertragendes Kochsystem mit einer Elektro-Kochplatte
BE1010927A4 (fr) * 1997-02-14 1999-03-02 Lizen Christian Plaque de chauffe, en particulier plaque de cuisson en materiau vitroceramique et procede de fabrication de celle-ci.
US6037572A (en) * 1997-02-26 2000-03-14 White Consolidated Industries, Inc. Thin film heating assemblies
CN1135906C (zh) * 1997-05-29 2004-01-21 皇家菲利浦电子有限公司 加热元件
AU5408599A (en) * 1998-09-03 2000-03-27 Aktiebolaget Electrolux An insulated thin film heater
AUPP599598A0 (en) * 1998-09-18 1998-10-08 Email Limited Self-regulating nanoscale heating element
US6452137B1 (en) * 1999-09-07 2002-09-17 Ibiden Co., Ltd. Ceramic heater
EP1204299A1 (en) * 2000-04-29 2002-05-08 Ibiden Co., Ltd. Ceramic heater and method of controlling temperature of the ceramic heater
WO2001084886A1 (en) * 2000-05-02 2001-11-08 Ibiden Co., Ltd. Ceramic heater
DE10111734A1 (de) * 2001-03-06 2002-09-26 Schott Glas Keramisches Kochsystem mit Glaskeramikplatte, Isolationsschicht und Heizelementen

Also Published As

Publication number Publication date
DK1368992T3 (da) 2005-01-31
US20040238525A1 (en) 2004-12-02
ATE280484T1 (de) 2004-11-15
DE10110792A1 (de) 2002-10-02
CA2439569A1 (en) 2002-09-12
ES2230466T3 (es) 2005-05-01
WO2002071803A1 (de) 2002-09-12
EP1368992A1 (de) 2003-12-10
CN1494818A (zh) 2004-05-05
DE50201364D1 (de) 2004-11-25
DE10110792B4 (de) 2004-09-23

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