EP0078755A1 - Indicator for the residual heat of an electric cooking plate or cooking top - Google Patents

Indicator for the residual heat of an electric cooking plate or cooking top Download PDF

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Publication number
EP0078755A1
EP0078755A1 EP82440036A EP82440036A EP0078755A1 EP 0078755 A1 EP0078755 A1 EP 0078755A1 EP 82440036 A EP82440036 A EP 82440036A EP 82440036 A EP82440036 A EP 82440036A EP 0078755 A1 EP0078755 A1 EP 0078755A1
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EP
European Patent Office
Prior art keywords
improvement according
pot
support
sensor
indicator light
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.)
Withdrawn
Application number
EP82440036A
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German (de)
French (fr)
Inventor
Jacky Guerin
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.)
De Dietrich et Cie SA
Original Assignee
De Dietrich et Cie SA
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 De Dietrich et Cie SA filed Critical De Dietrich et Cie SA
Publication of EP0078755A1 publication Critical patent/EP0078755A1/en
Withdrawn legal-status Critical Current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
    • H05B3/746—Protection, e.g. overheat cutoff, hot plate indicator
    • 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
    • F24C15/105—Constructive details concerning the regulation of the temperature

Definitions

  • the invention relates to an improvement to the residual heat indicators with which electrically powered cooktops and, more particularly, cooktops made of vitroceramic are fitted.
  • This indicator includes an indicator light which remains on as long as the temperature of at least one of the heating plates or surfaces exceeds a value estimated to be dangerous for the user, for example 60 ° C.
  • This indicator warns the cooker or the user of the danger of serious burns if the skin comes into contact with one of the plates or with the surface of the ceramic hob.
  • the known embodiment currently existing comprises at the end of the cooking surface, a residual heat indicator common to all the heating zones, the state of which indicates the temperature level of at least one heating zone with respect to the temperature limit. .
  • the lighting of the indicator light is controlled as follows.
  • the resistance is fed by putting at least one zone or a heating plate into service.
  • the heat dissipated by the resistance causes the contacts to close of the bimetallic switch, thus allowing the display of the indicator light.
  • This device gives satisfaction in general security.
  • the complete solution would be to have a temperature sensor in each insulation and protection pot located under each heating zone. However, the temperature in these pots rises to 6 0 0 ° C, and there is, in current technology, no thermal sensor of an appropriate cost capable of retaining its characteristics up to such high maximum temperatures.
  • the object of the invention is to overcome the above drawbacks by proposing an arrangement which allows individual signaling controlled directly from the temperature variations of the plate or heating zone concerned.
  • the invention relates to an improvement in residual heat indicators for an electrically powered cooktop, with plates or with heating zones in a ceramic glass block, remarkable in that the temperature is sensed inside. of each pot placed under the heating zones by an appropriate support conductor of heat, fixing to the walls of the pot, support on (equel is mounted the thermosensitive element, of the thermoresistive type, inserted in the supply circuit of an indicator light with ignition threshold, for example a lamp gas.
  • the support transmits heat by conduction.
  • the attenuation provided is sufficient to allow mounting of the heat-sensitive sensor on an adjacent plate.
  • the general idea of this invention consists in forming a thermal bridge carrying out a thermal attenuation at the level of the insulation and protection pots arranged under the heating zones by a means comprising or associated with an annex support sensor holder where is fixed or reported in close thermal contact a thermosensitive element mounted in a detection circuit with light indicator.
  • the first embodiment uses a support 1 in the form of a jumper which hangs on the vertical wall 2 of the insulation pot 3 comprising the heating resistor 4, disposed in the vicinity of the cooking surface 5 to determine the heating zone. corresponding.
  • This metal support has a generally L-shaped section.
  • the horizontal branch 6 has a vertical return 7 disposed in contact with the inner face of the wall. This face exposed to the interior temperature serves as a close sensor.
  • the horizontal branch 6 continues vertically with a wing 8 of height equal to that of the pot, with horizontal return 9.
  • This shape and the spring effect provided by the metal allow excellent mechanical support to be obtained at the same time as perfect contact.
  • Said support covers part of the side wall above the ascent 10 of the holding base of the pot 3.
  • the support comprises at about mid-height a horizontal plate 11 on which is mounted a thermosensitive sensor 12, of the thermoresistive type, by pinching, clipping or any other, using a tab or additional support 13.
  • the support 1 acts as a thermal attenuating bridge. Its inertia is low and the temperature at the sensor does not exceed its normal operating zone.
  • the detection circuit 16 shown in FIG. 2 comprises, connected between the terminals of the mains supply source 17, the thermoresistive sensor 12, for example a resistor with a negative temperature coefficient, a resistive voltage divider bridge formed by the two resistors 18 and 19, and an indicator light 20 of the triggering type, for example a gas indicator, preferably neon, mounted at the terminals of the resistor 19.
  • the thermoresistive sensor 12 for example a resistor with a negative temperature coefficient
  • a resistive voltage divider bridge formed by the two resistors 18 and 19
  • an indicator light 20 of the triggering type for example a gas indicator, preferably neon, mounted at the terminals of the resistor 19.
  • the simplicity of the assembly allows the use of standard elements of low cost, able to withstand the high temperatures generally prevailing near the heating zones.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Electric Stoves And Ranges (AREA)
  • Resistance Heating (AREA)

Abstract

Improvement characterised by the individual connection of each heating zone to a luminous detection by means of a heat bridge with adjacent sensor-holder support (11), the heat-sensitive sensor (12) of which is mounted in an individual detection circuit (16) with an indicator lamp. This invention is of interest to designers of cooking plates for modular kitchens. <IMAGE>

Description

L'invention concerne un perfectionnement au indicateurs de chaleur résiduelle dont sont équipées les tables de cuisson à énergie électrique et, plus particulièrement, les tables de cuisson réalisées en νitro-céramique.The invention relates to an improvement to the residual heat indicators with which electrically powered cooktops and, more particularly, cooktops made of vitroceramic are fitted.

Pour des raisons de sécurité, on équipe les tables de cuisson à énergie électrique et plus particulièrement les tables de cuisson réalisées en vitro-céramique, d'un indicateur de chaleur résiduelle.For safety reasons, electrically powered cooktops, and more specifically cooktops made of ceramic glass, are fitted with a residual heat indicator.

Cet indicateur comporte un témoin lumineux qui reste allumé tant que la température d'au moins une des plaques ou surfaces de chauffe dépasse une valeur estimée dangereuse pour l'utilisateur, par exemple 60°C.This indicator includes an indicator light which remains on as long as the temperature of at least one of the heating plates or surfaces exceeds a value estimated to be dangerous for the user, for example 60 ° C.

Ce témoin avertit la cuisinière ou l'utilisateur du danger de brûlure sérieuse en cas de contact de la peau avec une des plaques ou avec la surface du plan de vitro-céramique.This indicator warns the cooker or the user of the danger of serious burns if the skin comes into contact with one of the plates or with the surface of the ceramic hob.

En effet, en raison de l'inertie thermique bien connue des surfaces de chauffe à énergie électrique, l'abaissement de température s'effectue lentement. En raison de la durée non négligeable (en pratique entre cinq et dix minutes) pendant laquelle ces plaques restent à une température estimée dangereuse, les constructeurs ont ressenti le besoin d'afficher l'état de danger par un témoin lumineux.Indeed, due to the well-known thermal inertia of electric energy heating surfaces, the temperature reduction takes place slowly. Due to the significant length of time (in practice between five and ten minutes) during which these plates remain at an estimated dangerous temperature, the manufacturers felt the need to display the danger state by an indicator light.

La réalisation connue existant actuellement comporte en extrémité du plan de cuisson, un indicateur lumineux de chaleur résiduelle commun à toutes les zones de chauffe dont l'état indique le niveau de température d'au moins une zone de chauffe par rapport à la limite de température.The known embodiment currently existing comprises at the end of the cooking surface, a residual heat indicator common to all the heating zones, the state of which indicates the temperature level of at least one heating zone with respect to the temperature limit. .

L'allumage du témoin lumineux est commandé de la façon suivante.The lighting of the indicator light is controlled as follows.

Dans une boîte thermiquement isolée disposée sous la table de cuisson, on enferme un montage comprenant une résistance électrique et un contact bilame.In a thermally insulated box placed under the hob, an assembly comprising an electrical resistance and a bimetal contact is enclosed.

La résistance est alimentée par la mise en sevice d'au moins une zone ou une plaque de chauffe.The resistance is fed by putting at least one zone or a heating plate into service.

Après une durée déterminée, la chaleur dissipée par la résistance provoque la fermeture des contacts de l'interrupteur à bilame, permettant ainsi l'a;imentation du témoin lumineux.After a determined period, the heat dissipated by the resistance causes the contacts to close of the bimetallic switch, thus allowing the display of the indicator light.

Tout se passe comme si la chaleur dissipée par la résistance dans la boîte provenait d'une des plaques ou zones de chauffe.Everything happens as if the heat dissipated by the resistance in the box came from one of the heating plates or zones.

Il suffit alors de régler le seuil de fermeture des contacts à la valeur la plus faible pour garder allumé le signal du danger jusqu'à ce que la température descende en-dessous du seuil, quelle que soit la puissance de la ou des plaques ou zones de chauffe en service.Then just set the contact closure threshold to the lowest value to keep the danger signal on until the temperature drops below the threshold, regardless of the power of the plate or zones heating in service.

Ce dispositif donne satisfaction sur le plan général de la sécurité.This device gives satisfaction in general security.

Il présente toutefois les inconvénients de consommer de l'énergie supplémentaire, de ne pas donner d'indications individuelles et de ne pas pouvoir représenter l'évolution exacte de la température d'une plaque ou zone de chauffe.However, it has the drawbacks of consuming additional energy, of not giving individual indications and of not being able to represent the exact evolution of the temperature of a heating plate or zone.

La solution complète consisterait à disposer un capteur de température dans chaque pot d'isolation et de protection situé sous chaque zone de chauffe. Or, la température dans ces pots monte jusqu'à 600° C, et il n'existe, dans la technologie actuelle, aucun capteur thermique d'un coût approprié susceptible de garder ses caractéristiques jusqu'à des températures maximales aussi élevées.The complete solution would be to have a temperature sensor in each insulation and protection pot located under each heating zone. However, the temperature in these pots rises to 6 0 0 ° C, and there is, in current technology, no thermal sensor of an appropriate cost capable of retaining its characteristics up to such high maximum temperatures.

L'invention a pour but de pallier les inconvénients ci-dessus en proposant un montage qui permette une signalisation individuelle commandée directement à partir des variations de température de la plaque ou zone de chauffe concernée.The object of the invention is to overcome the above drawbacks by proposing an arrangement which allows individual signaling controlled directly from the temperature variations of the plate or heating zone concerned.

L'énergie nécessaire au fonctionnement s'avère suffisamment faible pour ne pas devoir en tenir compte.The energy required for operation turns out to be low enough not to have to take it into account.

A cet effet, l'invention concerne un perfectionnement aux indicateurs de chaleur résiduelle pour table de cuisson à énergie électrique, à plaques ou à zones de chauffe dans un bloc de vitrocéramique, remarquable en ce que l'on capte la température à l'intérieur de chaque pot placé sous les zones de chauffe par un support approprié conducteur de la chaleur, se fixant aux parois du pot, support sur (equel se trouve monté l'élément thermosensible, du type thermorésistif, inséré dans le circuit d'alimentation d'un voyant lumineux à seuil d'allumage, par exemple une lampe à gaz.To this end, the invention relates to an improvement in residual heat indicators for an electrically powered cooktop, with plates or with heating zones in a ceramic glass block, remarkable in that the temperature is sensed inside. of each pot placed under the heating zones by an appropriate support conductor of heat, fixing to the walls of the pot, support on (equel is mounted the thermosensitive element, of the thermoresistive type, inserted in the supply circuit of an indicator light with ignition threshold, for example a lamp gas.

Le support transmet la chaleur par conduction. L'atténuation apportée s'avère suffisante pour permettre le montage du capteur thermosensible sur une platine adjacente.The support transmits heat by conduction. The attenuation provided is sufficient to allow mounting of the heat-sensitive sensor on an adjacent plate.

La simplicité du montage et des éléments employés offre la possibilité, pour un coût réduit, de réaliser une voie séparée pour chaque plaque ou zone de chauffe et de les regrouper, par exemple, sur un tableau à présentation codée.The simplicity of the assembly and of the elements employed offers the possibility, for a reduced cost, of making a separate channel for each plate or heating zone and of grouping them, for example, on a table with coded presentation.

L'invention sera mieux comprise par la lecture de la description qui suit, effectuée à titre d'exemple non limitatif sur un mode de réalisation de l'invention en référence au dessin accompagnant danslequel:

  • . La figure 1 est une vue schématique en coupe du support monté sur un pot isolant, disposé sous une zone de chauffe d'un plan de cuisson en vitrocéramique;
  • . La figure 2 est le schéma électrique du circuit;
  • . La figure 3 représente une variante à orifice calibré.
The invention will be better understood by reading the description which follows, given by way of nonlimiting example on an embodiment of the invention with reference to the accompanying drawing in which:
  • . Figure 1 is a schematic sectional view of the support mounted on an insulating pot, arranged under a heating zone of a ceramic hob;
  • . Figure 2 is the circuit diagram;
  • . FIG. 3 represents a variant with a calibrated orifice.

On décrira ci-après deux modes d'exécution de la présente invention. Bien d'autres s'avèrent possibles en variante directe dérivée.Two embodiments of the present invention will be described below. Many others are possible as a direct derivative variant.

L'idée générale de cette invention consiste à former un pont thermique réalisant une atténuation thermique au niveau des pots d'isolation et de protection disposés sous les zones de chauffe par un moyen comprenant ou associé à un support annexe porte capteur où se trouve fixé ou rapporté en contact thermique étroit un élément thermosensible monté dans un circuit de détection à indicateur lumineux.The general idea of this invention consists in forming a thermal bridge carrying out a thermal attenuation at the level of the insulation and protection pots arranged under the heating zones by a means comprising or associated with an annex support sensor holder where is fixed or reported in close thermal contact a thermosensitive element mounted in a detection circuit with light indicator.

Le premier mode d'exécution utilise un support 1 en forme de cavalier qui vient s'accrocher sur la paroi verticale 2 du pot d'isolation 3 comprenant la résistance chauffante 4, disposé au voisinage du plan de cuisson 5 pour déterminer la zone de chauffe correspondante.The first embodiment uses a support 1 in the form of a jumper which hangs on the vertical wall 2 of the insulation pot 3 comprising the heating resistor 4, disposed in the vicinity of the cooking surface 5 to determine the heating zone. corresponding.

Ce support en métal présente une section de forme générale en L. La branche horizontale 6 comporte un retour vertical 7 disposé en contact avec la face intérieure de la paroi. Cette face exposée à la température intérieure sert de capteur rapproché. La branche horizontale 6 se poursuit verticalement par une aile 8 de hauteur égale à celle du pot, à retour horizontal 9.This metal support has a generally L-shaped section. The horizontal branch 6 has a vertical return 7 disposed in contact with the inner face of the wall. This face exposed to the interior temperature serves as a close sensor. The horizontal branch 6 continues vertically with a wing 8 of height equal to that of the pot, with horizontal return 9.

Cette forme et l'effet de ressort procuré par le métal permettent d'obtenir un excellent maintien mécanique en même temps qu'un contact parfait. Ledit support vient habiller une partie de la paroi latérale au-dessus de la remontée 10 du fond de maintien du pot 3.This shape and the spring effect provided by the metal allow excellent mechanical support to be obtained at the same time as perfect contact. Said support covers part of the side wall above the ascent 10 of the holding base of the pot 3.

Le support comporte à environ mi-hauteur une platine horizontale 11 sur laquelle se trouve monté un capteur thermosensible 12, du type thermorésistif, par pincement, clipsage ou tout autre, à l'aide d'une patte ou support annexe 13.The support comprises at about mid-height a horizontal plate 11 on which is mounted a thermosensitive sensor 12, of the thermoresistive type, by pinching, clipping or any other, using a tab or additional support 13.

Le support 1 joue le rôle de pont thermique atténuateur. Son inertie est faible et la température au niveau du capteur ne dépasse pas sa zone de fonctionnement normal.The support 1 acts as a thermal attenuating bridge. Its inertia is low and the temperature at the sensor does not exceed its normal operating zone.

Le même effet peut être obtenu par un passage transversal calibré 14 débouchant par un orifice 15 au niveau de la platine ou plaquette porte-capteur 11. Le capteur disposé dans le flux d'air chaud sortant transmet l'image des variations exactes de la température intérieure. La section de ce passage sera suffisamment faible pour que la perte de chaleur à l'intérieur du pot d'isolation ne dépasse pas une valeur considérée comme négligeable.The same effect can be obtained by a calibrated transverse passage 14 opening through an orifice 15 at the level of the plate or sensor holder plate 11. The sensor placed in the outgoing hot air flow transmits the image of the exact temperature variations interior. The section of this passage will be small enough that the heat loss inside the insulating pot does not exceed a value considered negligible.

Le circuit de détection 16 représenté en figure 2 comprend, branchés entre les bornes de la source d'alimentation secteur 17, le capteur thermorésistif 12, par exemple une résistance à coefficient de température négatif, un pont résistif diviseur de tension formé des deux résistances 18 et 19, et un témoin lumineux 20 du type à déclenchement, par exemple un voyant à gaz, de préférence à néon, monté aux bornes de la résistance 19.The detection circuit 16 shown in FIG. 2 comprises, connected between the terminals of the mains supply source 17, the thermoresistive sensor 12, for example a resistor with a negative temperature coefficient, a resistive voltage divider bridge formed by the two resistors 18 and 19, and an indicator light 20 of the triggering type, for example a gas indicator, preferably neon, mounted at the terminals of the resistor 19.

En raison de la simplicité du montage et du circuit, on pourra prévoir une détection et signalisation individuel les pour chaque zone de chauffe dont les voyants seront regroupés sur une plaquette ou un tableau à disposition codée.Due to the simplicity of the assembly and the circuit, it will be possible to provide detection and signaling individual for each heating zone, the indicators of which will be grouped together on a plate or table with coded layout.

La simplicité du montage permet l'utilisation d'éléments standards de faible coût, pouvant résister aux températures élevées régnant généralement à proximité des zones de chauffe.The simplicity of the assembly allows the use of standard elements of low cost, able to withstand the high temperatures generally prevailing near the heating zones.

L'invention a été décrite ci-dessus à propos de deux réalisations particulières; il est bien entendu qu'elle ne saurait s'y limiter et que diverses modifications d'ordre secondaire, variantes directes, substitutions par des moyens équivalents et autres changements sans apport inventif entrent pleinement dans son cadre.The invention has been described above with reference to two particular embodiments; it is understood that it cannot be limited thereto and that various modifications of a secondary nature, direct variants, substitutions by equivalent means and other changes without inventive contribution fully fall within its scope.

Claims (8)

1. Perfectionnement aux indicateurs de chaleur résiduelle utilisés dans les tables ou plans de cuisson à énergie électrique, caractérisé en ce que chaque zone de chauffe est reliée par un pont thermique comprenant un support porte-capteur thermosensible monté dans un circuit de détection (16) à témoin lumineux.1. Improvement in residual heat indicators used in electrically powered hobs or tables, characterized in that each heating zone is connected by a thermal bridge comprising a thermosensitive sensor holder support mounted in a detection circuit (16) with indicator light. 2. Perfectionnement selon la revendication 1 caractérisé en ce que le pont thermique est accroché sur le pot d'isolation (3) existant sous les zones de chauffe.2. Improvement according to claim 1 characterized in that the thermal bridge is hung on the insulation pot (3) existing under the heating zones. 3. Perfectionnement selon la revendication 1 caractérisé en ce que le pont thermique est un support (2) en cavalier venant s'accrocher sur la paroi latérale du pot d'isolation et présentant une aile de maintien (6) dans le volume intérieur du pot.3. Improvement according to claim 1 characterized in that the thermal bridge is a support (2) in jumper coming to hang on the side wall of the insulation pot and having a retaining wing (6) in the interior volume of the pot . 4. Perfectionnement selon la revendication 1 caractérisé en ce que le support porte-capteur est une platine adjacente (11), par exemple horizontale, sur laquelle se trouve monté le capteur, directement ou sur un support annexe.4. Improvement according to claim 1 characterized in that the sensor holder support is an adjacent plate (11), for example horizontal, on which the sensor is mounted, directly or on an annex support. 5. Perfectionnement selon la revendication 1 caractérisé en ce que le pont thermique est formé par la succession d'un passage calibré (14) transversal à la paroi latérale du pot, débouchant au niveau du support porte-capteur.5. Improvement according to claim 1 characterized in that the thermal bridge is formed by the succession of a calibrated passage (14) transverse to the side wall of the pot, opening at the sensor holder support. 6. Perfectionnement selon la revendication 1 caractérisé en ce que le capteur thermosensible est du type thermorésistif.6. Improvement according to claim 1 characterized in that the thermosensitive sensor is of the thermoresistive type. 7. Perfectionnement selon les revendications 1 et 6 caractérisé en ce que le circuit de détection (16) se compose, branchés aux bornes d'alimentation du secteur, d'un pont résistif (18) et (19) et d'un témoin lumineux.7. Improvement according to claims 1 and 6 characterized in that the detection circuit (16) consists, connected to the mains supply terminals, of a resistive bridge (18) and (19) and of an indicator light . 8. Perfectionnement selon la revendication 7 caractérisé en ce que le témoin lumineux est une lampe à décharge (20) à gaz, de préférence à néon.8. Improvement according to claim 7 characterized in that the indicator light is a gas discharge lamp (20), preferably neon.
EP82440036A 1981-10-29 1982-10-26 Indicator for the residual heat of an electric cooking plate or cooking top Withdrawn EP0078755A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8120497 1981-10-29
FR8120497A FR2515790B1 (en) 1981-10-29 1981-10-29 IMPROVEMENT IN RESIDUAL HEAT INDICATORS FOR ELECTRICALLY POWERED TABLES OR COOKING PLATES

Publications (1)

Publication Number Publication Date
EP0078755A1 true EP0078755A1 (en) 1983-05-11

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EP82440036A Withdrawn EP0078755A1 (en) 1981-10-29 1982-10-26 Indicator for the residual heat of an electric cooking plate or cooking top

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FR (1) FR2515790B1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0183163A1 (en) * 1984-11-27 1986-06-04 Mitsubishi Denki Kabushiki Kaisha Induction heating apparatus
GB2170002A (en) * 1985-01-17 1986-07-23 Licentia Gmbh Ceramic hob

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4022844C1 (en) * 1990-07-18 1992-02-27 Schott Glaswerke, 6500 Mainz, De
DE4022846C2 (en) * 1990-07-18 1994-08-11 Schott Glaswerke Device for power control and limitation in a heating surface made of glass ceramic or a comparable material

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3624352A (en) * 1970-09-22 1971-11-30 Gen Motors Corp Ceramic top range surface temperature cut-off thermostatic device
DE2627373A1 (en) * 1976-06-18 1977-12-22 Ego Elektro Blanc & Fischer Temp. control and indicator for ceramic hotplate - consists of expansion bar operated switch pair mounted under each heating ring and corresponding indicators
GB2065883A (en) * 1979-12-20 1981-07-01 Bosch Siemens Hausgeraete Temperature indicating means
GB2067880A (en) * 1980-01-14 1981-07-30 Johnson Matthey Co Ltd Glass Ceramic Hob Including Temperature Sensor
EP0021107B1 (en) * 1979-06-13 1983-03-30 E.G.O. Elektro-Geräte Blanc u. Fischer Radiant heating element for a cooking unit equipped with temperature sensor

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3624352A (en) * 1970-09-22 1971-11-30 Gen Motors Corp Ceramic top range surface temperature cut-off thermostatic device
DE2627373A1 (en) * 1976-06-18 1977-12-22 Ego Elektro Blanc & Fischer Temp. control and indicator for ceramic hotplate - consists of expansion bar operated switch pair mounted under each heating ring and corresponding indicators
EP0021107B1 (en) * 1979-06-13 1983-03-30 E.G.O. Elektro-Geräte Blanc u. Fischer Radiant heating element for a cooking unit equipped with temperature sensor
GB2065883A (en) * 1979-12-20 1981-07-01 Bosch Siemens Hausgeraete Temperature indicating means
GB2067880A (en) * 1980-01-14 1981-07-30 Johnson Matthey Co Ltd Glass Ceramic Hob Including Temperature Sensor

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0183163A1 (en) * 1984-11-27 1986-06-04 Mitsubishi Denki Kabushiki Kaisha Induction heating apparatus
US4667074A (en) * 1984-11-27 1987-05-19 Mitsubishi Denki Kabushiki Kaisha Temperature display for an induction heating apparatus
GB2170002A (en) * 1985-01-17 1986-07-23 Licentia Gmbh Ceramic hob

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Publication number Publication date
FR2515790A1 (en) 1983-05-06
FR2515790B1 (en) 1986-12-12

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