EP0250880B1 - Corps de chauffage à rayonnement - Google Patents

Corps de chauffage à rayonnement Download PDF

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Publication number
EP0250880B1
EP0250880B1 EP87107772A EP87107772A EP0250880B1 EP 0250880 B1 EP0250880 B1 EP 0250880B1 EP 87107772 A EP87107772 A EP 87107772A EP 87107772 A EP87107772 A EP 87107772A EP 0250880 B1 EP0250880 B1 EP 0250880B1
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EP
European Patent Office
Prior art keywords
radiant heater
heating
radiant
unit according
marginal
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
EP87107772A
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German (de)
English (en)
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EP0250880B2 (fr
EP0250880A3 (en
EP0250880A2 (fr
Inventor
Gerhard Dipl.-Ing. Gössler
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EGO Elektro Geratebau GmbH
Original Assignee
EGO Elektro Gerate Blanc und Fischer GmbH
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Application filed by EGO Elektro Gerate Blanc und Fischer GmbH filed Critical EGO Elektro Gerate Blanc und Fischer GmbH
Priority to AT87107772T priority Critical patent/ATE69495T1/de
Publication of EP0250880A2 publication Critical patent/EP0250880A2/fr
Publication of EP0250880A3 publication Critical patent/EP0250880A3/de
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Publication of EP0250880B1 publication Critical patent/EP0250880B1/fr
Publication of EP0250880B2 publication Critical patent/EP0250880B2/fr
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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
    • 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
    • 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
    • H05B2213/00—Aspects relating both to resistive heating and to induction heating, covered by H05B3/00 and H05B6/00
    • H05B2213/04—Heating plates with overheat protection means
    • 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
    • H05B2213/00—Aspects relating both to resistive heating and to induction heating, covered by H05B3/00 and H05B6/00
    • H05B2213/07—Heating plates with temperature control means

Definitions

  • the invention relates to a radiant heater according to the preamble of claim 1.
  • the food to be cooked must be gently heated to a predetermined temperature level for as short a time as possible, after which, when the power is reduced and controlled via a temperature switch or controlled by a power control device, cooking is continued without the need for a separate actuation of the electrical actuation process for the hotplate.
  • This automatic influencing of the heat output of the hotplate is so desirable that it does not automatically return to the state of the boiling phase after the one-time transition from the state of the boiling phase to the continued boiling phase, unless it has been switched off completely and by appropriate cooling again provided for the implementation of a next heating phase.
  • radiant heat in the visible wave range is emitted as quickly as possible, so that the cook can quickly recognize the operational readiness or the operating state of the hotplate from the visible glow of the associated radiant heater, and thus as far as possible high radiation density or heat output is quickly available.
  • a radiant heater in which a separately switchable radiant heater determines the edge heating and thus the fixed heating field size.
  • the inner area of the radiant heater lies within the edge heating, of which the radially outermost part of the circle does not belong to the edge heating formed exclusively by the outermost heating resistor. All sections of the radiant heating resistors are approximately evenly distributed over the entire heating field, without a particular distribution of the radiation density being recognizable.
  • the invention has for its object to provide a radiant heater of the type described, in which the time from switching on until reaching visible glow and thus also the heating time compared to previously known radiant heaters, which in particular have at least one exposed heating resistor, can be significantly reduced.
  • the parboiler heating is not switched off at the end of the parboiling phase, but is possibly reduced to a smaller difference in its radiation density compared to the area of the radiant heater within it.
  • a variable parboil circuit is created which, during the parboil phase, at least temporarily results in faster heat development in the edge area of the radiant heater or where the best contact between this vessel bottom and the heating plate is generally given due to the usual shape of the bottom of the cooking vessel.
  • the increased power difference during the heating phase, with which the edge heating is operated compared to the rest of the partial power can also be used to ensure that the edge heating described glows visibly in an extremely short time after switching on the hotplate and thus visually indicates the full operational readiness of this hotplate .
  • the described heat emission behavior of the parboiler heating which is continued to be used during the boiling phase, can e.g. can be achieved in a simple manner in that the parboiling edge heating is provided or switched over the entire parboiling phase with relatively increased power.
  • a particularly simple switchover from the parboiling phase to the continued boiling phase can be achieved, for example, by switching a partial output of the jet heater essentially as a function of time, preferably via a temperature switch with a high switching temperature difference or hysteresis.
  • This temperature switch only switches off at a relatively high temperature influencing its temperature sensor and only at a relatively low temperature which the radiant heater does not usually do during cooking, but only when it is full constant shutdown and after appropriate cooling, can achieve.
  • this behavioral characteristic of the temperature switch can also be achieved in that the heat coupling of the temperature sensor of the temperature switch to the radiant heater or the radiant heater is chosen to be very low such that the temperature sensor is only heated when the end of the heating phase is reached the switch-off temperature is heated and then can no longer cool down to its switch-on temperature due to low heat dissipation through appropriate insulation during continued cooking. This results in a time-dependent influencing of the parboiling phase using switching elements that respond exclusively to temperature influences.
  • a particularly simple embodiment of the subject matter of the invention is that at least a predetermined part of the jet heater, that is to say at least one heating resistor, is practically switched off by short-circuiting during the boiling phase.
  • a significant increase in the output in the outer region of the heating field can be achieved without any particular effort, this solution being suitable even for the simplest radiant heaters which have only a single radiant heating resistor, that is to say only a single electrical heating circuit.
  • At least one such inner part can be formed by a radiant heating resistor with a high positive temperature coefficient (PTC), the device influencing the transition from the boiling phase to the continued cooking phase then exclusively can be formed by the associated radiant heating resistor itself, since the PTC resistor brings about the desired reversal due to its characteristic behavior.
  • PTC positive temperature coefficient
  • a still further simplified and technically very economical solution to the problem on which the invention is based can also be achieved in that the parboiling edge heating is provided by a separate, in particular single-stranded, bifilar, i.e. Double back and forth heating circuit is formed, which is preferably always connected in parallel to the inner part of the jet heater. Because of its arrangement on the periphery of the heating field, this heating conductor can be subjected to a much higher load than the heating coil located within it, for example taking up the remaining part of the heating field, as a result of which a much faster visible glow of this area of the heating field and a shorter heating time can be achieved.
  • an advantageous solution to the object on which the invention is based is achieved in that the parboiler heating is connected to the carrier with less heat-conducting coupling than the inner part of the jet heater, so that the specific heat dissipation from the edge heating in the carrier is significantly less than that of the inner part of the jet heater and therefore the edge heating comes to a visible glow much faster after switching on.
  • This lower specific heat dissipation can be achieved by various, relatively simple measures, for example by a lower specific surface contact between the associated heating resistor and the support, by using a support material with a lower specific thermal conductivity in the area of the edge heating and by similar measures.
  • the parboiler control device can also be formed exclusively by the heat-conducting connection between the jet heater and the carrier, without using a separate control or regulating device, since only the characteristics of this heat-conducting connection are used to end the parboiling phase.
  • a particularly low specific thermal connection between the edge heating and the support can e.g. can be achieved in that longitudinal sections of the associated heating resistor are arranged essentially freely floating in a contact-free manner with respect to the carrier, that is to say they run in a contact-free or tensioned manner between suspension sections in the manner of suspension bridge sections.
  • the longitudinal sections of the heating resistor with a low thermal coupling to the support can also be created in that they lie in areas of the support which have different thermal conductivity due to the material of the support and are formed, for example, by a thermal insulation or insulation material which is suitable for the immediate mounting of the heating resistor is unsuitable, but has very good insulation properties.
  • Such an insulation material is used in radiant heaters, for example, as underbedding of a cup-shaped or disk-shaped insulation support body, which has lower thermal insulation values, but is suitable for the reliable determination of the heating resistance by direct embedding.
  • the relatively dimensionally stable insulation support body can be provided with openings in the area of the said longitudinal sections of the heating resistor, into which upward projections of the underbedding expediently protrude such that these projections pass through Completely completely fill breaks at least in plan view, wherein these projections can be set back at least partially in the vertical direction relative to the front side associated with the heating resistors and / or can be set at least partially in relation thereto.
  • the insulation support body can be, for example, a relatively solid molded body made of mineral fibers, made of a material such as is known, for example, under the trade name "Fiberfrax", while the underbedding is based on pyrogenic silica.
  • the parboil control device expediently has a temperature sensor that actuates the associated switch, which is preferably insulated with respect to the jet heater by means of an insulation layer, which in a simple manner without special additional insulation measures can be achieved that the temperature sensor is embedded in the already existing insulation material of the carrier, that is on the side facing away from the heating plate of the radiant heating resistor. If the temperature sensor is designed as an expansion rod sensor, it can simply be embedded in the insulation carrier by simply plugging it into the insulation carrier, and its switching head can lie outside the carrier.
  • This switch which operates in the manner of a temperature protection switch, can also be formed by a so-called Klixon thermostat, which interacts with a heat conducting rod, which transfers the heat from the sensing point to the temperature sensor in the switching head of the thermostat, for example formed by a bimetal sensor.
  • a radiant heater 1 according to the invention, which is intended to be arranged on the underside of a translucent heating plate 2 made of glass ceramic or the like, has a shell-shaped or cup-shaped support 4.
  • the carrier 4 consists essentially of a one-part or multi-part inner shell 5 made of at least one insulation material and a relatively thin-walled outer shell 6, which serves to protect and mount the inner shell 5, which preferably consists of sheet steel.
  • the inner shell 5 carries on its substantially flat or parallel to the heating plate 2 floor a radiant heater 7 to be operated by electric current in the form of at least one encapsulated heating resistor 8, but it is conceivable that at least part of the power of the radiant heater 1 also with a encapsulated radiant heater, i.e. a bulb lamp, such as a halogen lamp, can be operated.
  • the radiant heater has only unencapsulated heating resistors.
  • the heating resistor 8 is laid in a double spiral approximately in such a way about the central axis of the radiant heater 1 that its two connection ends 14 lie on the periphery of the heating field 10 which is essentially delimited by the outermost, approximately annularly closed spiral winding.
  • a predetermined number of outer turns of the heating resistor 8, namely about half of all turns or about three spiral turns in the exemplary embodiment shown, are provided as the heating-up edge heating 9 for operation with a relatively increased radiation density during the heating-up phase, while the rest lie within this heating edge 9 Windings of the same heating resistor form a remaining partial power 11, which can be operated in a variable power gradient with respect to the edge heating 9.
  • the entire jet heater 7, that is to say the only heating resistor 8 forming this, is operated during the entire heating operation by means of an adjustable control device or, for example, a clocking power control device, with the jet heater 7 being connected to the mains current with the interposition thereof.
  • an adjustable control device or, for example, a clocking power control device there is a temperature sensor 16 crossing the heating field 10 in the space between the radiant heater 7 and the heating plate 2, which in the case of using a control device 12 for the operation of the Jet heater 7 can influence this or can be assigned to a temperature limiter 15, the switching head of which is arranged directly on the outside of the carrier 4 penetrated by the temperature sensor 16.
  • the temperature sensor 17, which can be an expansion rod sensor with an outer tube and an inner rod arranged therein with different expansion coefficients, or a heat conducting rod which supplies the heat from the sensing point to the switching head of the control device 13 below the switching head of the temperature limiter 15 on the outside of the carrier 4 also parallel to the heating plate 2, but below the bottom surface of the inner shell 5 receiving the radiant heater 7 and above its underside, i.e.
  • this temperature sensor 17 can be shorter than half the width of the heating field 10 such that it essentially only on one side of its central axis in the area of the associated turns of the edge heating 9 l weighs.
  • a cut-off switch 18 Arranged in the switching head of the control device 13 designed as a cut-off switch 18 in the form of, for example, a snap switch, which is not directly connected to the power supply for the radiant heater 7, is arranged in a short-circuit circuit of a short-circuit for the partial power 11, that is to say exclusively via its two connecting poles two points at a distance from each other of the heating resistor 8 so electrically connected that when the parboiler 11 is closed, the longitudinal section of the heating resistor 8 belonging to the partial power 11 and occupying the inner zone of the heating field 10 is essentially taken out of operation by short-circuiting.
  • the remaining section of the heating resistor 8 associated with the parboiler heating and operating essentially up to the periphery of the heating field 10 is operated during the closed short-circuit circuit 19 with a relatively substantially increased radiation density and, after being switched on, is heated up very quickly so that the heating plate 2 a visible glow can be perceived.
  • the heating switch 18 opens, so that now also the longitudinal section of the heating resistor 8 belonging to the partial power 11 goes into full power operation and thus the difference in radiation density between the area of the heating edge heating 9 and that of the partial power 11 is at least reduced.
  • increased power should be available for as long as possible during the boiling process, without switching back to the increased power again during continued cooking and after the temperature monitor forming the control device 13 has responded.
  • the shortening of the boil-up time to be achieved by the design according to the invention also results from the fact that the cooking vessel base 3 of cooking vessels is usually curved in such a way that the cooking vessel base 3 has the most direct contact with the heating plate 2 in the region of its outer edge and therefore there is a particular one faster heat transfer is possible.
  • arrows, the length of which represent the radiation density indicate that an operating arrangement is provided in the subject matter of the invention in such a way that the power density is greatest in this edge region in the boiling phase. In the continued cooking phase, either this external power density in the edge area 9 can be reduced, the power density in the area of the partial power 11 can be increased, or both processes can be carried out simultaneously.
  • the switching hysteresis of the control device 13 is chosen so large that it no longer switches back to the short-circuit position, that is to say in the closed position of the parboiler switch 18, before the radiant heater 1 has almost completely cooled.
  • this longitudinal section can also be formed by a heating conductor with a high positive temperature coefficient, which consists, for example, of molybdenum disilicide.
  • a heating conductor with a high positive temperature coefficient which consists, for example, of molybdenum disilicide.
  • the carrier 4 is stretched with the end face of the edge of the shell of the inner shell 5 under pressure over the entire surface against the inside or underside of the heating plate, so that the inner circumference of this contact edge essentially coincides with the periphery or outer boundary of the heating field 10.
  • the heating resistor 8 can be immovably fixed to the inner shell 5 by at least partially embedding its coils in the insulating material.
  • the radiant heater can also be round, rectangular or square, deviating from the circular shape, instead of being circular, the heating resistor then expediently following this outer contour in its spiral shape.
  • the radiant heater 1 a has as the parboiling edge heater 9 a one in only one operation, that is, only in a single-strand loop or bifilar external heating resistor made of particularly thin, heavy-duty resistance wire, i.e. of a resistance wire that is thinner and is more resilient or loaded than the heating resistor belonging to the partial power 11.
  • the radiant heater of this radiant heater 1 is basically of two-circuit design, but the two heating circuits are connected in parallel or in series, which is why they are always switched on and off simultaneously.
  • the inner shell 5a consists of two superimposed supporting bodies 20, 21 of different insulating materials and thicknesses, the lower, panel-shaped supporting body 20 consisting of a powdery pressed mass, being relatively pressure-elastic, a greater thickness than the molded body 21 lying thereon over the entire surface has and above all has a thermal insulation value which is significantly higher than that of the support body 21.
  • the disk-shaped support body 21 for example, is a relatively dimensionally stable molded body made of pressed mineral fibers, on which the heating resistors are held by embedding in places. This support body 21 has on the upper side upwards about its remaining thickness, approximately radial to the central axis of the radiant heater 1 a and integrally formed with the rest of the support body 21 webs.
  • the webs lying only in the radially outer region of the heating field are each formed between depressions 23, which extend from the periphery of the heating field only over part of the turns of the heating resistors.
  • the windings lying radially inside the depressions 23, that is to say in the central region, are therefore in direct contact with the inner shell 5a.
  • these turns are held by embedding exclusively on the webs 22, while according to FIG. 5 they float freely in the area of the depressions, that is to say opposite span or bridge the inner shell 5a without contact or only lie weakly.
  • the distance of the longitudinal sections of the heating resistors bridging the depressions parallel to their bottom surfaces from these bottom surfaces can be smaller than the outside diameter of these heating resistors, in particular about half as large, while the heating resistors are embedded in the webs 22 by about half their outside diameter.
  • the distance between adjacent webs can be approximately twice their width.
  • openings or openings 23b which are continuous over the thickness of the support body 21b can also be provided, which are at least partially filled by projections 24 of the lower support body 20b.
  • the projections 24 extend slightly above the upper sides of the webs 22b, but are provided with channel-shaped receiving grooves 25 in the region of each longitudinal section crossing them, the bottom surfaces of which can be slightly lower than the upper side of the webs 21b.
  • the depth of the receiving grooves 25, relative to which the associated longitudinal sections of the heating resistors can be provided in a contact-free manner or only loosely but without embedded, is expediently so great that the adjacent receiving grooves 25 separating webs of the support body 21b only extend approximately to the middle of the outer diameter of these longitudinal sections.
  • the heat dissipation from the above-mentioned longitudinal sections of the radiant heaters lying between the webs 21 into the inner shell 5b is particularly low, so that these longitudinal sections very quickly come to a visible glow after being switched on from the cold state.
  • control device 13 can be similar to that according to DE-OS 32 47 028 or that according to EP-A- 01 14 307, to which reference is made for further details.
  • the parboiler heating is in the same space as that of the rest of the jet heater 7, which is enclosed by the carrier 4 and the heating plate 2, and is not separated from it in a ring shape by an intermediate web of the carrier.
  • the invention results in a higher specific power in the outdoor area, which may be as high as it could not be expected from the heating resistor and / or the glass ceramic plate in continuous operation. Due to its mostly temporary effect and the higher power consumption in this area, especially during the parboiling phase, it does not trigger any harmful effects.
  • a higher specific power could also be provided outdoors. It mainly has an effect during the heating-up time, in that the outer heating conductor glows faster, so that the desired optical effects are triggered and heat transfer to the cooking vessel begins earlier. During the continued cooking phase, this power distribution, which is advantageously maintained without switching, hardly plays out, at least not negatively, because the total power then e.g. is reduced by cyclical switching on and off of the total power. It has been shown that a higher specific load on the edge area and in particular on the outer heating conductor winding does not play an important role in their service life, since these do not burn out even with some overload.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Electric Stoves And Ranges (AREA)
  • Resistance Heating (AREA)
  • Power Steering Mechanism (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
  • Control Of Resistance Heating (AREA)

Claims (13)

1. Corps (1) de chauffage à rayonnement pour le chauffage d'un plan de cuisson (2), notamment pour un plan de cuisson en vitrocéramique, comprenant au moins un foyer et un support (4) pour un élément chauffant électrique (7) à rayonnement présentant au moins une résistance chauffante (8) à rayonnement, telle qu'un filament chauffant, cet élément chauffant s'étendant depuis une zone périphérique annulaire d'un champ (10) de chauffage, délimitant une surface fixe du champ de chauffage, à travers une zone médiane, jusqu'à une zone intérieure du champ (10) de chauffage, où un secteur de l'élément chauffant (7) à rayonnement, qui correspond à une puissance partielle et qui est disposé à la périphérie du champ (10) de chauffage, forme un système de chauffage périphérique (9) autour d'un secteur intérieur, qui correspond à une autre puissance partielle, et où des moyens de commande sont prévus, qui permettent le fonctionnement selon le régime de mise en température du système de chauffage périphérique (9) avec une intensité prédéterminée de rayonnement, caractérisé en ce que les moyens de commande permettant le fonctionnement selon le régime de mise en température du système de chauffage périphérique (9) sont réalisés de manière à correspondre à une intensité de rayonnement plus importante que l'intensité de rayonnement développée par le secteur intérieur.
2. Corps de chauffage à rayonnement selon la revendication 1, caractérisé en ce que le système de chauffage périphérique (9) est commandé, durant toute la phase de mise en température essentiellement, avec une puissance d'une intensité supérieure à celle du secteur intérieur, et en ce que les moyens de commande sont de préférence réalisés de manière à effectuer la commutation vers un régime de cuisson continue, lors de laquelle un corps de chauffage du système de chauffage périphérique (9) fonctionne à une puissance qui est inférieure à celle du régime de mise en température.
3. Corps de chauffage à rayonnement selon l'une des revendications 1 ou 2, caractérisé en ce qu'une puissance partielle (11) de l'élément chauffant (7) à rayonnement, terminant la phase de mise en température, est commandée essentiellement en fonction du temps, de préférence par l'intermédiaire d'un thermocontact ayant un très grand différentiel de température de commutation, voire une très grande hystérésis, et-ou une liaison à faible conductivité de chaleur avec l'élément chauffant (7) à rayonnement.
4. Corps de chauffage à rayonnement selon l'une des revendications précédentes, caractérisé en ce que la commande de la phase de mise en température est réalisée par un branchement (19) en court-circuit du secteur intérieur de l'élément chauffant (7) à rayonnement, le système de chauffage périphérique (9) et le secteur intérieur de l'élément chauffant (7) étant constitués notamment d'une seule résistance chauffante à rayonnement.
5. Corps de chauffage à rayonnement selon l'une des revendications précédentes, caractérisé en ce que le Secteur intérieur de l'élément chauffant (7) à rayonnement est constitué par une résistance chauffante rayonnante ayant un coefficient de température positif (CTP) très élevé.
6. Corps de chauffage à rayonnement selon l'une des revendications précédentes, caractérisé en ce que le système de chauffage périphérique (9a) est constitué par un circuit séparé de chauffage, qui s'étend notamment en un seul brin, bifilaire s'il y a lieu, sur un angle d'environ 360` .
7. Corps de chauffage à rayonnement selon l'une des revendications précédentes, caractérisé en ce qu'au moins le système de chauffage périphérique (9a) est relié au support (4a) de façon à engendrer une conductibilité thermique inférieure à celle du secteur intérieur de l'élément chauffant (7a) à rayonnement, et présente de préférence un contact superficiel spécifique avec le support (4a), qui est moins important que celui du secteur intérieur.
8. Corps de chauffage à rayonnement selon l'une des revendications précédentes, caractérisé en ce que les moyens de commande sont constitués notamment de façon exclusive par la liaison conductrice de chaleur entre l'élément chauffant (7a) à rayonnement et le support (4a).
9. Corps de chauffage à rayonnement selon l'une des revendications précédentes, caractérisé en ce que des sections longitudinales au moins de la résistance chauffante du système de chauffage périphérique (9a) sont essentiellement suspendues librement par rapport au support (4a) et n'entrent pas en contact avec celui-ci.
10. Corps de chauffage à rayonnement selon l'une des revendications précédentes, caractérisé en ce que des sections longitudinales au moins de la résistance chauffante du système de chauffage périphérique (9b) sont disposées notamment en alternance dans des secteurs du support (4b) qui possèdent une conductibilité thermique différente.
11. Corps de chauffage à rayonnement selon l'une des revendications précédentes, caractérisé en ce que la face du support (4b), qui reçoit l'élément chauffant à rayonnement, est composée de deux corps (20b, 21 b) de support superposés, dont le corps inférieur présente une conductivité thermique réduite et s'imbrique, au moins au niveau du système de chauffage périphérique (9b), dans des ouvertures (23b) du corps supérieur (21 b) de support.
12. Corps de chauffage à rayonnement selon la revendication 11, caractérisé en ce que le support (4a) comporte une coquille intérieure épaisse (5a) en matière isolante, destinée à recevoir l'élément chauffant (7a) à rayonnement, et une coquille extérieure mince (6a) servant de renfort, et en ce que de préférence le corps supérieur (21) de support est réalisé en une matière isolante fibreuse et'ou que le corps inférieur (20) de support est réalisé en une matière isolante essentiellement poudreuse.
13. Corps de chauffage à rayonnement selon l'une des revendications précédentes, caractérisé en ce qu'un dispositif régulateur (13) de mise en température comporte une sonde (17) de température réalisée notamment sous forme d'une tige de dilatation, cette sonde étant noyée notamment dans la coquille intérieure (5) en étant isolée thermiquement par rapport à l'élément chauffant (7) à rayonnement, de préférence par l'intermédiaire d'une couche isolante.
EP87107772A 1986-07-03 1987-05-28 Corps de chauffage à rayonnement Expired - Lifetime EP0250880B2 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT87107772T ATE69495T1 (de) 1986-07-03 1987-05-28 Strahlheizkoerper.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3622415 1986-07-03
DE19863622415 DE3622415A1 (de) 1986-07-03 1986-07-03 Strahlheizkoerper

Publications (4)

Publication Number Publication Date
EP0250880A2 EP0250880A2 (fr) 1988-01-07
EP0250880A3 EP0250880A3 (en) 1989-02-08
EP0250880B1 true EP0250880B1 (fr) 1991-11-13
EP0250880B2 EP0250880B2 (fr) 1997-04-23

Family

ID=6304342

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87107772A Expired - Lifetime EP0250880B2 (fr) 1986-07-03 1987-05-28 Corps de chauffage à rayonnement

Country Status (8)

Country Link
US (1) US4810857A (fr)
EP (1) EP0250880B2 (fr)
JP (1) JPS6366891A (fr)
AT (1) ATE69495T1 (fr)
AU (1) AU596673B2 (fr)
DE (2) DE3622415A1 (fr)
ES (1) ES2027255T3 (fr)
YU (1) YU107487A (fr)

Families Citing this family (30)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3623130A1 (de) * 1986-07-09 1988-01-21 Ako Werke Gmbh & Co Strahlungsbeheizung
DE3812490A1 (de) * 1988-04-15 1989-11-02 Ego Elektro Blanc & Fischer Strahlheizkoerper
US5177339A (en) * 1988-05-27 1993-01-05 Ceramaspeed Limited Radiant electric heaters
DE3908599A1 (de) * 1989-03-16 1990-09-20 Ako Werke Gmbh & Co Strahlungsheizeinrichtung
DE4022292A1 (de) * 1990-07-15 1992-01-16 Ego Elektro Blanc & Fischer Elektrisches strahlungsheizelement
DE4039501A1 (de) * 1990-12-11 1992-06-17 Ego Elektro Blanc & Fischer Elektrischer heizkoerper, insbesondere strahlheizkoerper
DE9113992U1 (de) * 1991-11-12 1992-01-02 E.G.O. Elektro-Geräte Blanc u. Fischer, 7519 Oberderdingen Strahlungs-Heizeinheit
US5796075A (en) * 1992-03-09 1998-08-18 E.G.O. Elektro-Gerate Blanc Und Fisher Gmbh & Co. Kg Heater, particularly for kitchen appliances
DE4229375C2 (de) * 1992-09-03 2000-05-04 Ego Elektro Blanc & Fischer Strahlungs-Heizkörper
JP2574296Y2 (ja) * 1992-06-22 1998-06-11 象印マホービン株式会社 調理器の加熱装置
KR940010455B1 (ko) * 1992-09-24 1994-10-22 김영길 고강도, 우수한 전기전도도 및 열적안정성을 갖는 동(Cu)합금 및 그 제조방법
DE9214270U1 (de) * 1992-10-22 1994-04-07 Fritz Eichenauer Gmbh & Co Kg, 76870 Kandel Elektrischer Strahlungsheizeinsatz für Glaskeramik-Kochfeld
GB2275163B (en) * 1993-02-11 1996-04-03 Ceramaspeed Ltd Radiant electric heater and method
SE9403517D0 (sv) * 1994-10-14 1994-10-14 Electrolux Ab Byggelement för hushållsspis
GB2307836B (en) * 1995-11-30 2000-05-24 Ceramaspeed Ltd Radiant electric heater arrangement
DE19604306C2 (de) * 1996-02-07 2000-05-11 Ako Werke Gmbh & Co Strahlungsheizkörper
DE19604658A1 (de) * 1996-02-09 1997-08-14 Ako Werke Gmbh & Co Temperaturmeßeinrichtung für eine Regelschaltung eines elektrischen Strahlungsheizgeräts
DE19638517A1 (de) * 1996-09-20 1998-03-26 Ako Werke Gmbh & Co Strahlungsheizkörper für eine Kochstelle
FR2760957B1 (fr) * 1997-03-21 1999-10-01 Moulinex Sa Appareil de cuisson electrique
US6940223B2 (en) 2000-07-10 2005-09-06 Semiconductor Energy Laboratory Co., Ltd. Film forming apparatus and method of manufacturing light emitting device
DE10310255A1 (de) * 2003-03-05 2004-09-16 E.G.O. Elektro-Gerätebau GmbH Elektrische Heizung mit einer Kontaktkochplatte
DE102004059159A1 (de) * 2004-12-08 2006-06-14 BSH Bosch und Siemens Hausgeräte GmbH Kochfeld
DE102005005520A1 (de) * 2005-02-01 2006-08-10 E.G.O. Elektro-Gerätebau GmbH Heizeinrichtung mit Temperatursensor und Kochfeld mit Heizeinrichtungen
DE102006022571A1 (de) * 2006-05-15 2007-11-22 BSH Bosch und Siemens Hausgeräte GmbH Vorrichtung zur Steuerung von Strahlungsheizkörpern
US9399219B2 (en) * 2009-02-13 2016-07-26 Frank Leo Spangler Thermal Array
US9662653B2 (en) * 2010-01-29 2017-05-30 Frank Leo Spangler Thermal array and method of use
DE102010063454B4 (de) 2010-12-17 2022-02-03 BSH Hausgeräte GmbH Strahlungsheizkörper für ein Kochfeld sowie Kochfeld
US10006638B2 (en) * 2016-01-04 2018-06-26 Haier Us Appliance Solutions, Inc. Cooktop assemblies and methods for operating same
KR102111109B1 (ko) * 2017-02-21 2020-05-14 엘지전자 주식회사 면상 발열장치, 이를 포함하는 전기 레인지 및 그 제조방법
US20210041108A1 (en) * 2019-08-09 2021-02-11 Eidon, Llc Apparatuses for radiant heating

Family Cites Families (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1979471A (en) * 1929-05-27 1934-11-06 Otto A Knopp Electric heater
DE905800C (de) * 1949-02-18 1954-03-08 Carl Reher Einrichtung zur Temperaturueberwachung
DE807698C (de) * 1949-07-24 1951-07-02 Otto Kiefer Dipl Kfm Aus zwei Metallstaeben von verschiedenen Ausdehnungskoeffizienten bestehender Thermostat
CH266979A (de) * 1949-08-18 1950-02-28 Amsler Alfred J & Co Temperaturregler mit elektrischer Kontaktvorrichtung.
US3912905A (en) * 1974-02-25 1975-10-14 Kanthal Corp Electric resistance heating device
US4008454A (en) * 1975-11-04 1977-02-15 General Electric Company Differential expansion rod and tube thermostat
DE2729929C3 (de) * 1977-07-02 1981-10-08 Karl 7519 Oberderdingen Fischer Strahlungs-Heizeinheit für Glaskeramik-Elektrokochgeräte
DE2820114C2 (de) * 1978-05-09 1987-02-05 E.G.O. Austria Elektro-Geräte GmbH, Heinsfels, Osttirol Strahlungs-Heizeinheit insbesondere für Glaskeramik-Elektrokochgeräte
DE3007037A1 (de) * 1980-02-26 1981-09-03 Ego Elektro Blanc & Fischer Glaskeramik-kochgeraet
ZA813746B (en) * 1980-07-22 1982-07-28 Micropore International Ltd Electric radiant heater unit for a glass ceramic top cooker
US4574187A (en) * 1980-08-29 1986-03-04 Sprague Electric Company Self regulating PTCR heater
GB2087698B (en) * 1980-11-17 1984-03-28 Micropore International Ltd Electric radiant heater unit
DE8133341U1 (de) * 1980-11-17 1982-03-25 Micropore International Ltd., Droitwich, Worcestershire Elektrischer strahlungsheizer fuer herde mit glaskeramikdeckplatten
DE3206024A1 (de) * 1982-02-19 1983-09-08 Bosch-Siemens Hausgeräte GmbH, 7000 Stuttgart Elektrokochplatte, vorzugsweise glaskeramik-kochmulde
DE3314501A1 (de) * 1983-04-21 1984-10-25 Ego Elektro Blanc & Fischer Heizelement, insbesondere strahlungs-heizelement fuer die beheizung von glaskeramikplatten
DE3378516D1 (en) * 1982-09-16 1988-12-22 Ego Elektro Blanc & Fischer Heating element, especially radiant heating element for the heating of ceramic plates
DE3247028A1 (de) 1982-12-18 1984-06-20 Ego Elektro Blanc & Fischer Temperaturregeleinrichtung fuer ein waermegeraet
IT8320567V0 (it) * 1983-01-21 1983-01-21 I R C A Ind Resistenze Corazza Elemento riscaldante elettrico, in particolare per piani lisci di cottura.
DE3410442A1 (de) * 1983-09-17 1985-09-26 Ego Elektro Blanc & Fischer Temperaturfuehler, insbesondere fuer einen temperaturbegrenzer fuer eine glaskeramik-kocheinheit
GB8412339D0 (en) * 1984-05-15 1984-06-20 Thorn Emi Domestic Appliances Heating apparatus
JPS62271386A (ja) * 1986-01-04 1987-11-25 カ−ル・ツワイス・ステイフツング ガラス−セラミツク系調理用レンジ

Also Published As

Publication number Publication date
DE3774497D1 (de) 1991-12-19
EP0250880B2 (fr) 1997-04-23
US4810857A (en) 1989-03-07
YU107487A (en) 1989-12-31
EP0250880A3 (en) 1989-02-08
ES2027255T3 (es) 1992-06-01
DE3622415A1 (de) 1988-01-07
AU7520687A (en) 1988-01-07
AU596673B2 (en) 1990-05-10
ATE69495T1 (de) 1991-11-15
EP0250880A2 (fr) 1988-01-07
JPS6366891A (ja) 1988-03-25

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