EP1368992A1 - Keramisches kochsystem mit glaskeramikplatte, isolationsschicht und heizelementen - Google Patents
Keramisches kochsystem mit glaskeramikplatte, isolationsschicht und heizelementenInfo
- Publication number
- EP1368992A1 EP1368992A1 EP02702371A EP02702371A EP1368992A1 EP 1368992 A1 EP1368992 A1 EP 1368992A1 EP 02702371 A EP02702371 A EP 02702371A EP 02702371 A EP02702371 A EP 02702371A EP 1368992 A1 EP1368992 A1 EP 1368992A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- insulation
- cooking system
- segment
- insulation layer
- heating elements
- 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
Links
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, which carries on its underside an electrical insulation layer with one or more heating elements for direct heating of the glass ceramic plate.
- These ceramic cooking systems with direct heating of the glass ceramic plate are characterized by high parboiling performance and have advantages over heating by means of radiant heaters in terms of efficiency and design options.
- Ceramic cooking systems consist of a flat glass ceramic plate, on the top of which the cooking vessel to be heated is placed.
- the glass ceramic plates comprise oxidic and non-oxidic ceramics, as can be found in WO 00/15005, FR 2 744 1 16, EP 0 861 014 A1 and US 6,037,572.
- an insulation layer for electrical insulation is applied between the glass ceramic plate and the heating elements. Materials with high electrical properties are suitable as the material for this insulation layer
- 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 method, S n O 2 being used in particular, as WO 00/18 189 shows.
- Another possibility is to apply thick-film conductor tracks made of silver-palladium alloys using the screen printing method, as can be seen from EP 0 861 014 A1 and EP 0 069 218 A1.
- 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 much 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. If materials such as mullite or cordierite, which adhere better to the glass ceramic plate and have a lower coefficient of expansion, are used for the insulation layer, then a thicker layer must be applied for insulation reasons, which then also leads to a higher loss of heat transfer.
- the insulation layer is subdivided into a plurality of insulation segments which extend over the cooking zone and carry segment-specific heating elements.
- insulation layer By dividing the insulation layer into several insulation segments, i.e. the subdivision of the cooking zone into several sub-zones creates small-scale isolation areas.
- the assigned insulation segments are in their
- 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 . If, according to one embodiment, it is provided that the insulation segments are at least partially connected to one another via insulation bridges for connecting conductor tracks, then the segment-specific heating elements applied to the insulation segments can be connected in the desired manner.
- a further embodiment provides that sensor tracks for temperature measurement are applied to the insulation layer-free locations on the underside of the glass ceramic plate.
- the insulation layer is subdivided into circular segment-shaped insulation segments arranged concentrically to one another.
- a particularly favorable subdivision can be carried out in such a way that the insulation layer is subdivided into a central, approximately disk-shaped insulation segment with a sector-shaped recess for connecting lines and a plurality of circular segment-shaped insulation segments surrounding the disk-shaped insulation segment.
- a temperature measurement carried out centrally in the cooking zone can be advantageous.
- the configuration is carried out in such a way that the disk-shaped insulation segment has a recess in the center for applying a sensor track.
- the segment-individually applied heating elements it can be provided according to one embodiment that the segment-specific heating elements are applied as electrically conductive thick-film conductor tracks and are electrically conductively connected to one another in the desired manner via connecting conductor tracks designed as thick-film conductor tracks.
- the heating elements can be designed not only as thick-film heating conductors but also as full-surface heating foils which are adapted to the size and shape of the insulation segments.
- Fig. 1 is a view of the underside of a glass ceramic plate cutout provided with a divided insulation layer and
- FIG. 2 shows the glass ceramic plate section according to FIG. 1, the insulation segments carrying segment-specific heating elements consisting of thick-film conductor tracks.
- each cooking zone provided on the glass ceramic plate 10 and marked on the upper side thereof is assigned a subdivided insulation layer on the underside 11.
- the subdivision provides a central, approximately disk-shaped insulation segment 12 which has a free radial sector 15 starting from a central recess 18 (FIG. 2).
- This centric isolation segment 12 four insulation segments 13.1, 13.2, 13.3 and 13.4, which are in the form of circular sections, are distributed, with a sector 16 remaining free between the insulation segments 13.2 and 13.3.
- This sector 16 extends sector 15 and provides access for the electrical connection of the heating elements.
- the insulation segments 13.1 and 13.2 are connected to one another 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 connects the insulation segments 13.4 and 13.1 to one another.
- the insulation layer-free areas between the insulation segments 1 2, 13.1, 13.2, 13.3 and 13.4 can carry Seonsor tracks 40, 41 and 42 for temperature measurement, with which zone-specific temperatures can be recorded in order to be able to switch and regulate the heating elements for each zone.
- Segment-specific heating elements 20, 30.1, 30.2, 30.3 and 30.4 are applied to the insulation segments 12, 13.1, 13.2, 13.3 and 13.4, as shown in FIG. 2.
- these heating elements are formed by thick-film layers arranged concentrically to one another, in the form of an arc of a circle and meandering in series.
- Conductor tracks 25 and 35 are formed.
- the connecting lines 21 and 22 are activated when the heating element 20 applied to the central insulation segment 20 is energized.
- 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 series connection.
- the heating elements 30.1, 30.2, 30.3 and 30.4 connected in series are controlled and energized via connecting lines 31 and 32.
- the insulation segments 12, 13.1, 13.2, 13.3 and 13.4 can be kept small in this way, as a result of which much smaller mechanical stresses occur during heating, as in the case of a closed insulation layer covering the entire cooking zone. It is therefore possible to use materials for the insulation segments that have a higher one
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)
Description
Claims
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 true EP1368992A1 (de) | 2003-12-10 |
| EP1368992B1 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 (de) |
| EP (1) | EP1368992B1 (de) |
| CN (1) | CN1494818A (de) |
| AT (1) | ATE280484T1 (de) |
| CA (1) | CA2439569A1 (de) |
| DE (2) | DE10110792B4 (de) |
| DK (1) | DK1368992T3 (de) |
| ES (1) | ES2230466T3 (de) |
| WO (1) | WO2002071803A1 (de) |
Families Citing this family (9)
| 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)
| 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 (de) * | 2000-04-29 | 2002-05-08 | Ibiden Co., Ltd. | Keramisches heizelement und verfahren zur regelung der temperatur des heizelement. |
| 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 |
-
2001
- 2001-03-06 DE DE10110792A patent/DE10110792B4/de not_active Expired - Fee Related
-
2002
- 2002-02-27 DE DE50201364T patent/DE50201364D1/de not_active Expired - Fee Related
- 2002-02-27 WO PCT/EP2002/002060 patent/WO2002071803A1/de not_active Ceased
- 2002-02-27 ES ES02702371T patent/ES2230466T3/es not_active Expired - Lifetime
- 2002-02-27 DK DK02702371T patent/DK1368992T3/da active
- 2002-02-27 CN CNA028060547A patent/CN1494818A/zh active Pending
- 2002-02-27 AT AT02702371T patent/ATE280484T1/de not_active IP Right Cessation
- 2002-02-27 EP EP02702371A patent/EP1368992B1/de not_active Expired - Lifetime
- 2002-02-27 US US10/469,897 patent/US20040238525A1/en not_active Abandoned
- 2002-02-27 CA CA002439569A patent/CA2439569A1/en not_active Abandoned
Non-Patent Citations (1)
| Title |
|---|
| See references of WO02071803A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| DK1368992T3 (da) | 2005-01-31 |
| US20040238525A1 (en) | 2004-12-02 |
| EP1368992B1 (de) | 2004-10-20 |
| 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 |
| CN1494818A (zh) | 2004-05-05 |
| DE50201364D1 (de) | 2004-11-25 |
| DE10110792B4 (de) | 2004-09-23 |
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