EP1368994B1 - Plan de cuisson en ceramique a plaque en vitroceramique - Google Patents

Plan de cuisson en ceramique a plaque en vitroceramique Download PDF

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Publication number
EP1368994B1
EP1368994B1 EP02748333A EP02748333A EP1368994B1 EP 1368994 B1 EP1368994 B1 EP 1368994B1 EP 02748333 A EP02748333 A EP 02748333A EP 02748333 A EP02748333 A EP 02748333A EP 1368994 B1 EP1368994 B1 EP 1368994B1
Authority
EP
European Patent Office
Prior art keywords
heating elements
subzone
ceramic
temperature sensors
conductor tracks
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
EP02748333A
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German (de)
English (en)
Other versions
EP1368994A1 (fr
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
Schott 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 Schott AG filed Critical Schott AG
Publication of EP1368994A1 publication Critical patent/EP1368994A1/fr
Application granted granted Critical
Publication of EP1368994B1 publication Critical patent/EP1368994B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • 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
    • 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
    • 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
    • H05B3/72—Plates of sheet metal
    • 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
    • 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 ceramic hob with a glass ceramic plate, the separated on its underside via an insulating layer heating elements for direct Heating carries, wherein the cooking zone at least in an inner and an outer Sub-zone is divided, which carry sub-zone-specific heating elements, which by means of a control in dependence on the sub-zones associated Temperature sensors detected temperature values switching and / or in their performance are controllable.
  • Such a ceramic cooktop is known from DE 41 30 337 A1.
  • the sub-zones each have a meandering applied Edelleiter on, in the vicinity of a same guided sensor track to Temperature detection runs.
  • the heating conductors and the sensor tracks on one, the entire cooking zone covering insulation layer applied.
  • a ceramic hob has the same Disadvantages arise when the heating elements radiate to the center of the Cooking zone are aligned and extend over sector-shaped subzones.
  • the construction and application of the heating elements is difficult even then if concentric, circular on the bottom of the glass ceramic plate Printed conductors are applied, extending almost 360 ° over the circumference of the subzones extend. Between two tracks, the glass ceramic plate forms a Parallel connection of many temperature-dependent differential resistors, such as DE 40 22 846 A1 shows.
  • the variety of resistors can also be due to many strip-shaped tracks realized, which are connected in parallel with their ends, like the EP 0 315 079 B1 (DE 38 84 569 T2). In this training of the hob However, no individually switchable and controllable subzones are formed.
  • the manufacturing technology easy to apply and free areas in which temperature sensors can be applied directly to the bottom of the glass ceramic plate.
  • the Heating elements extend over the largest surface portion of the associated Subzones and ensure optimal and uniform heating of these Partial areas, which leads to a high efficiency of the hob, there also the temperatures of the sections in a simple manner independently recorded and used for switching and controlling the heating power can.
  • the temperature sensors can also be used on thin insulation layers be applied, the glass ceramic plate outside the heating elements cover. Are the temperature sensors housed in insulating covers, then they can also be applied to the heating elements.
  • connection sector can be kept narrow according to one embodiment be that the connectors in the terminal sector over the outer sub-zone are led out. Outside the cooking zone remains for the connection contacts and the connecting cables more space.
  • the temperature of the inner subzone of the cooking zone is monitored by that the temperature sensor in the center of the cooking zone as a bar sensor or Point sensor is formed and with its connection via the connection sector is led beyond the cooking zone.
  • the conductor tracks consist of NiCr, NiAl or Cermets alloys and in the thermal Syringes are applied, while as sheet heaters heating foils, NiCr, NiAl or cermets layers are used on the insulating sublayers are applied.
  • the printed conductors and the surface heating elements can also be used as silver-containing Webs or layers are applied by screen printing. In addition, you can they are applied with carbon paste.
  • FIG. 1 In the embodiment of FIG. 1 is a glass ceramic plate 10 on the Bottom view 11 seen. A round cooking zone is in a known manner marked on the top. On the underside of the glass ceramic plate 10 are a plurality of circular arc-shaped interconnects 15 on the same running coextensive insulating sub-layers 12 applied. These interconnects 15 extend over nearly 360 ° of the circumference of the cooking zone and leave only a narrow connection sector 16 free, extending to the center of the cooking zone extends.
  • the insulating sub-layers 12 have a high electrical Insulation resistance, i. a high dielectric strength. They are as thin Insulation conductor formed with a small heat transfer resistance.
  • connection sector 16 In the area of the connection sector 16, the conductor tracks 15 are connected by means of connecting pieces 17 connected in series, so that a heating coil with alternating direction of rotation of the turns arises.
  • a terminal a0 to the beginning A is the innermost one Conductor 15 led.
  • a terminal a1 is in the terminal sector 16 with a Connecting piece 17 is connected, so that the heating coil in a heating element H1 and a heating element H2 is divided.
  • These heating elements H1 and H2 are then an inner sub-zone Wi and an outer sub-zone Wa assigned.
  • the terminal a2 is connected to the end E of the outermost conductor 15, so that the two heating elements H1 and H2 can be controlled independently of each other and in the heating power are adjustable.
  • N switched controller ST provided at the terminals a0, a1 and a2 are connected.
  • S1, S2, S3 and S4 that of the temperature sensors So, S1, S2, S3 and S4 detected temperatures of the regions of the glass ceramic plate 10 supplied.
  • the temperature sensor So is in the center of the inner Sub-zone Wi, i.
  • the temperature sensor is metallic, it is outside the heating elements a thin insulation layer to avoid short circuits.
  • the beginning A, the end E and the tap of the heating coil lead to connection contacts, which are outside the round cooking zone and there enough Find space.
  • the heating cables ho, hi and h2 from the control ST can therefore be easily connected to the terminals a0, a1 and a2.
  • the terminal sector 16 can be made narrow, so that the circular arc-shaped, concentrically arranged conductor tracks 15 can extend over a maximum proportion of the circumference and Cover the cooking zone over a large area. This brings a uniform heating the subzones Wi and Wa with good efficiency.
  • the insulation sublayers 12 can be arranged in the same arrangement with the same area be applied to the bottom 11 of the glass ceramic plate 10, so that outside the tracks 15, the bottom 11 of the glass ceramic plate 10 for the direct connection to the temperature sensors So, S1, S2, S3 and S4 accessible is and that the temperature sensors without being affected by a Insulation layer 12 can make the temperature measurement. As mentioned, These areas of the bottom of the glass ceramic plate 10 also with Thinner insulation layers may be occupied when metallic temperature sensors are used.
  • an annular heating foil 15i forms the heating element H1 associated with the inner sub-zone Wi and the annular part Bankfolie 15a the outer sub-zone Wa.
  • the terminal contacts a0, a1 and a2 in Terminal sector 16 switch the heating elements H1 and H2 in the opposite direction Turning in a row.
  • Between the two heating foils 15i and 15a creates an insulation-free space 21 for direct attachment of Temperature sensors S1, S2, S3 and S4 on the underside 11 of the glass ceramic plate 10.
  • the heating foil 15i has a central recess 20 in which a arranged as a rod sensor or point sensor temperature sensor So arranged is and with its connection over the connection sector 1 6 like the connection contacts a0, a1 and a2 are led out of the cooking zone and as in the Embodiment of FIG. 1 with a controller ST are in communication.
  • the two subzones Wi and Wa of the cooking zone can therefore be dependent switched by associated temperatures and / or regulated in the heating power become.
  • the heating foils 15i and 15a the vast majority of the cooking zone, so that the subzones Wi and Wa can be heated evenly and this depending on the associated temperature sensors So or S1, S2, S3 and S4 detected temperatures.
  • precisely the temperature sensors S1 to S4 ensure that for the outer partial zone Wa temperature differences over the circumference of the cooking zone edge recorded and taken into account.
  • the terminal contact a0 connects on one side of the terminal sector 16 the two heating foils 15i and 15a as a tap for the subdivision of Heating element in the partial heating elements H1 and H2.
  • the structure of the cooking zone with the two heating foils 15i and 1 5a is simple and easy to apply.
  • the solicitn2020elemetne also in a similar manner how the printed conductors 15 of FIG. 1 are applied, for which purpose NiCr, NiAl alloys, Cermets, silver coatings or carbon paste coatings be used.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Resistance Heating (AREA)
  • Control Of Resistance Heating (AREA)
  • Surface Heating Bodies (AREA)
  • Electric Stoves And Ranges (AREA)
  • Cookers (AREA)
  • Baking, Grill, Roasting (AREA)

Claims (10)

  1. Plan de cuisson en céramique avec une plaque en vitrocéramique, qui porte séparément sur sa face inférieure, au-dessus d'une couche isolante, des éléments chauffants pour le chauffage direct, dans lequel la zone de cuisson est divisée au moins en une zone partielle intérieure et une zone partielle extérieure, qui portent des éléments chauffants individuels pour les zones partielles, qui sont commutables et/ou dont la puissance est réglable au moyen d'une commande en fonction des valeurs de température détectées par des capteurs de température associés aux zones partielles, caractérisé en ce que la zone partielle intérieure (Wi) et la zone partielle extérieure (Wa) sont formées de voies conductrices (15) disposées en forme d'arcs de cercle concentriquement les unes aux autres, qui ne laissent libre qu'un secteur de raccordement (16) s'étendant jusqu'au centre de la zone de cuisson, en ce que les voies conductrices (15) sont raccordées l'une à la suite de l'autre dans le secteur de raccordement (16) au moyen de pièces de liaison (17), en ce que le début (A) de la voie conductrice (15) la plus intérieure et la fin (E) de la voie conductrice (15) la plus extérieure ainsi qu'une pièce de liaison (17) opérant la subdivision en éléments chauffants (H1, H2) individuels pour les zones partielles peuvent être commandés dans le secteur de raccordement (16) au moyen de raccords (a1, a2 et a0), en ce que la couche isolante (12) est disposée au moins en dessous des voies conductrices (15), et en ce qu'un capteur de température (S0) est associé à la zone partielle intérieure (Wi) et plusieurs capteurs de température (S1, S2, S3, S4) répartis sur la périphérie sont associés à la zone partielle extérieure (Wa).
  2. Plan de cuisson en céramique avec une plaque en vitrocéramique, qui porte séparément sur sa face inférieure, au-dessus d'une couche isolante, des éléments chauffants pour le chauffage direct, dans lequel la zone de cuisson est divisée au moins en une zone partielle intérieure et une zone partielle extérieure, qui portent des éléments chauffants individuels pour les zones partielles, qui sont commutables et/ou dont la puissance est réglable au moyen d'une commande en fonction des valeurs de température détectées par des capteurs de température associés aux zones partielles, caractérisé en ce que la zone partielle intérieure (Wi) et la zone partielle extérieure (Wa) sont formées de deux éléments chauffants plats (15.1, 15.2) disposés en forme d'arcs de cercle concentriquement l'un à l'autre, qui ne laissent libre qu'un secteur de raccordement (16) s'étendant jusqu'au centre de la zone de cuisson, en ce que les deux extrémités des éléments chauffants plats (15.1, 15.2) sont raccordées ensemble et les débuts des deux éléments chauffants plats (15.1, 15.2) sont raccordés individuellement dans le secteur de raccordement (16) au moyen de raccords (a0, a1, a2), en ce que la couche isolante (12) est disposée au moins en dessous des éléments chauffants plats (15.1, 15.2), et en ce qu'un capteur de température (S0) est associé à la zone partielle intérieure (Wi) et plusieurs capteurs de température (S1, S2, S3, S4) répartis sur la périphérie sont associés à la zone partielle extérieure (Wa).
  3. Plan de cuisson en céramique selon la revendication 1 ou 2, caractérisé en ce que les raccords (a0, a1, a2) dans le secteur de raccordement (16) sont menés au-delà de la zone partielle extérieure (Wa).
  4. Plan de cuisson en céramique selon l'une quelconque des revendications 1 à 3, caractérisé en ce que le capteur de température (S0) au centre de la zone partielle intérieure (Wi) est constitué par un capteur en bâton ou un capteur ponctuel, et est mené avec son raccord sur le secteur de raccordement (16) au-delà de la zone de cuisson.
  5. Plan de cuisson en céramique selon la revendication 1, caractérisé en ce que les voies conductrices (15) sont composées d'alliages de NiCr, NiAl ou de cermets et sont appliquées par pulvérisation à chaud.
  6. Plan de cuisson en céramique selon la revendication 2, caractérisé en ce que les éléments chauffants plats (15.1, 15.2) utilisés sont des films chauffants, des couches contenant du NiCr, NiAl ou des cermets, qui sont déposés sur des couches isolantes partielles de même surface.
  7. Plan de cuisson en céramique selon l'une quelconque des revendications 1 à 6, caractérisé en ce que les voies conductrices (15) ou les éléments chauffants plats (15.1, 15.2) sont composés de voies ou de couches contenant de l'argent, qui sont déposées par sérigraphie sur la face inférieure de la plaque en vitrocéramique (10) ou qui se composent de pâtes de carbone.
  8. Plan de cuisson en céramique selon l'une quelconque des revendications 1 à 7, caractérisé en ce que les capteurs de température (S0, S1, S2, S3, S4) sont installés directement sur la face inférieure de la plaque en vitrocéramique (10), à l'extérieur des voies conductrices (15) ou des éléments chauffants plats (15.1, 15.2).
  9. Plan de cuisson en céramique selon l'une quelconque des revendications 1 à 7, caractérisé en ce que les capteurs de température (S0, S1, S2, S3, S4) sont disposés à l'extérieur des voies conductrices (15) ou des éléments chauffants plats (15.1, 15.2), ces régions de la plaque en vitrocéramique (10) étant garnies de couches isolantes minces.
  10. Plan de cuisson en céramique selon l'une quelconque des revendications 1 à 7, caractérisé en ce que les capteurs de température (S0, S1, S2, S3, S4) sont placés dans des films de protection et sont posés directement sur les voies conductrices (15) ou sur les éléments chauffants plats (15.1, 15.2).
EP02748333A 2001-03-06 2002-03-05 Plan de cuisson en ceramique a plaque en vitroceramique Expired - Lifetime EP1368994B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10111734A DE10111734A1 (de) 2001-03-06 2001-03-06 Keramisches Kochsystem mit Glaskeramikplatte, Isolationsschicht und Heizelementen
DE10111734 2001-03-06
PCT/EP2002/002401 WO2002071806A1 (fr) 2001-03-06 2002-03-05 Plan de cuisson en ceramique a plaque en vitroceramique

Publications (2)

Publication Number Publication Date
EP1368994A1 EP1368994A1 (fr) 2003-12-10
EP1368994B1 true EP1368994B1 (fr) 2005-05-25

Family

ID=7677100

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02748333A Expired - Lifetime EP1368994B1 (fr) 2001-03-06 2002-03-05 Plan de cuisson en ceramique a plaque en vitroceramique

Country Status (8)

Country Link
US (1) US20040074893A1 (fr)
EP (1) EP1368994B1 (fr)
CN (1) CN1489882A (fr)
AT (1) ATE296527T1 (fr)
CA (1) CA2439606A1 (fr)
DE (2) DE10111734A1 (fr)
ES (1) ES2243742T3 (fr)
WO (1) WO2002071806A1 (fr)

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DE10110792B4 (de) * 2001-03-06 2004-09-23 Schott Glas Keramisches Kochsystem mit Glaskeramikplatte,Isolationsschicht und Heizelementen
DE10356790A1 (de) * 2003-12-04 2005-07-07 BSH Bosch und Siemens Hausgeräte GmbH Heizvorrichtung für Fluide, Durchlauferhitzer und Verfahren zu deren Herstellung
WO2007024691A2 (fr) * 2005-08-19 2007-03-01 Mrl Industries, Inc. Element insensible aux defaillances et combinaison avec un circuit insensible aux defaillances
KR101306725B1 (ko) * 2007-03-08 2013-09-10 엘지전자 주식회사 히팅장치
CA2959248C (fr) * 2014-08-27 2019-04-16 Aselsan Elektronik Sanayi Ve Ticaret Anonim Sirketi Motif de piste de circuit de dispositif de chauffage specifique applique en revetement sur une mince plaque de dispositif de chauffage pour uniformite de temperature elevee
CN107889300A (zh) * 2016-09-29 2018-04-06 浙江久康电器有限公司 插接式红外线电热炉盘及装用该电热炉盘的电加热灶
KR102123677B1 (ko) 2018-08-21 2020-06-17 엘지전자 주식회사 전기 히터
KR102159802B1 (ko) * 2018-08-21 2020-09-25 엘지전자 주식회사 전기 히터
KR102159800B1 (ko) * 2018-08-21 2020-09-25 엘지전자 주식회사 전기 히터
KR102091251B1 (ko) * 2018-08-21 2020-03-19 엘지전자 주식회사 전기 히터
KR102110410B1 (ko) * 2018-08-21 2020-05-14 엘지전자 주식회사 전기 히터
KR102056084B1 (ko) * 2018-08-21 2019-12-16 엘지전자 주식회사 전기 히터
KR102111332B1 (ko) * 2018-10-11 2020-05-15 엘지전자 주식회사 전기 히터
KR20200142319A (ko) * 2019-06-12 2020-12-22 엘지전자 주식회사 면상 발열체 및 그 제조방법
US11371748B2 (en) 2019-08-05 2022-06-28 The Merchant Of Tennis, Inc. Portable heater with ceramic substrate
IT202100031361A1 (it) * 2021-12-14 2023-06-14 Marine Cookers Srls “migliorato piano cottura”

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Also Published As

Publication number Publication date
CN1489882A (zh) 2004-04-14
WO2002071806A9 (fr) 2004-12-29
WO2002071806A1 (fr) 2002-09-12
ATE296527T1 (de) 2005-06-15
US20040074893A1 (en) 2004-04-22
ES2243742T3 (es) 2005-12-01
DE10111734A1 (de) 2002-09-26
EP1368994A1 (fr) 2003-12-10
DE50203197D1 (de) 2005-06-30
CA2439606A1 (fr) 2002-09-12

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