EP0021107B2 - Elément chauffant par rayonnement pour une unité de cuisson, muni d'un détecteur de température - Google Patents

Elément chauffant par rayonnement pour une unité de cuisson, muni d'un détecteur de température Download PDF

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Publication number
EP0021107B2
EP0021107B2 EP80103010A EP80103010A EP0021107B2 EP 0021107 B2 EP0021107 B2 EP 0021107B2 EP 80103010 A EP80103010 A EP 80103010A EP 80103010 A EP80103010 A EP 80103010A EP 0021107 B2 EP0021107 B2 EP 0021107B2
Authority
EP
European Patent Office
Prior art keywords
heating element
heating
heat transfer
edge
cooking surface
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
Application number
EP80103010A
Other languages
German (de)
English (en)
Other versions
EP0021107B1 (fr
EP0021107A1 (fr
Inventor
Eugen Wilde
Günther Scharpf
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.)
EGO Elektro Geratebau GmbH
Original Assignee
EGO Elektro Gerate Blanc und Fischer GmbH
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6073117&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0021107(B2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by EGO Elektro Gerate Blanc und Fischer GmbH filed Critical EGO Elektro Gerate Blanc und Fischer GmbH
Priority to AT80103010T priority Critical patent/ATE2925T1/de
Publication of EP0021107A1 publication Critical patent/EP0021107A1/fr
Publication of EP0021107B1 publication Critical patent/EP0021107B1/fr
Application granted granted Critical
Publication of EP0021107B2 publication Critical patent/EP0021107B2/fr
Expired 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
    • H05B1/00—Details of electric heating devices
    • H05B1/02—Automatic switching arrangements specially adapted to apparatus ; Control of heating devices
    • H05B1/0227—Applications
    • H05B1/0252—Domestic applications
    • H05B1/0258—For cooking
    • H05B1/0261—For cooking of food
    • H05B1/0266—Cooktops
    • 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
    • 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
    • F24C7/00—Stoves or ranges heated by electric energy
    • F24C7/06—Arrangement or mounting of electric heating elements
    • F24C7/067—Arrangement or mounting of electric heating elements on ranges
    • 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
    • H05B2213/05—Heating plates with pan detection means

Definitions

  • the invention relates to a radiant heating element for a cooking unit with a cooking surface, in particular made of glass ceramic, in which the heating is carried out by radiant heating resistors which are arranged in an insulation accommodated by a carrier shell, with a temperature sensor arranged outside the heating element in the edge region thereof a control device and a heat transfer element which is in thermal contact with the temperature sensor, which extends under surface contact on the underside of the cooking surface between the cooking surface and the edge of the insulation adjacent to it and whose outer section is at a distance from the cooking surface.
  • a heating unit has become known in which there is a section in the edge area that is not heated, that is to say unheated, in which a temperature sensor is arranged, which is pressed against the glass ceramic plate from below. It is stated therein that the laying of the temperature sensor in the edge area of the heating unit has the advantage over the arrangement in the central area that a representative result can also be obtained when using pots with a recessed central area.
  • the known proposal has the disadvantage that no heating takes place in the section in which the sensor is arranged, so that the sensor result is determined almost exclusively by the temperature at the bottom of the saucepan because of the relatively poor cross-conduction in the glass ceramic material, and thus provides no information for this whether the glass ceramic plate may be heated.
  • there is a "cold spot" in the area of the heating unit which could be noticeable, for example, when a pancake is being prepared in the insufficient heating of a section.
  • the guidance of these heating elements through the section to be excluded is made more difficult.
  • a metal hotplate which has a spring clip fixed there on the underside of its unheated central zone, which presses a heat transfer element, which is inserted between it and the hotplate body and carries a temperature controller, onto the hotplate body.
  • the plug-on facilitates the attachment of the heat transfer element, but requires an additional part to be attached to the hotplate and also only allows a plug-on position.
  • the object of the invention is to provide a radiant heating element in which the temperature sensor is coupled to the heating of the radiant heating elements and to the temperature of the glass ceramic plate with good adaptability to changing conditions during installation without significantly affecting the uniform heating.
  • the heat transfer element can preferably have the shape of an essentially flat plate made of a highly heat-conducting sheet.
  • the invention therefore makes it possible to arrange the temperature sensor outside the preferably circular heating area of the heating element and still to sense the temperature in the edge area of the heating element itself, ie also in the area occupied by the cooking vessel.
  • the heat transfer element lies at least partially on the underside of the glass ceramic plate with thermal contact, so that heat is applied to it both from above and from below.
  • the heat transfer element that carries the sensor is inserted between the edge of the heating element and the glass ceramic plate and clamped there.
  • the sensor is simply plugged into the heating element, so that it can be attached to any heating element and above all at any point on its circumference. This enables particularly good adaptation to changing conditions during installation.
  • Fig. 1 shows a heating element 11, which consists of a flat, open sheet metal shell 17, in which a likewise cup-shaped insulation 12 is arranged, in the electrical in spiral grooves.
  • Heating resistors 13 are in the form of coils with a flat oval basic shape.
  • the heating elements are pressed in a manner not shown resiliently from below onto a glass ceramic plate 14 and thus form the heating of a cooking unit.
  • Each heating element heats a hotplate, specifically because of the distance between the heating resistors 13 and the glass ceramic plate (space 15 in the recess in the insulation) by radiation.
  • the insulation 12 has a raised edge 16, the upper side of which protrudes somewhat above the upper edge of the sheet metal shell 17 receiving it, and which is thus intended to rest on the underside of the glass ceramic.
  • a heat transfer element 18 is inserted, which is made from a substantially flat plate made of a highly heat-conducting sheet, for example brass or copper sheet. Its shape can be seen from Fig. 2. In plan view, the basic shape is essentially T-shaped.
  • the T-bar forms an elongated region 19 lying in the circumferential direction of the essentially circular heating element at its edge, which is approximately lenticular and also has a lenticular region 20 which protrudes inwards from the edge 16 into the heated space 15 and thereby in the edge region some heating resistors 13 partially covered.
  • the remaining part of the area 19 lies between the edge 16 and the glass ceramic plate 14.
  • resilient fastening tabs 22 are provided, which enable the heat transfer element 18 to be clamped on the edge of the sheet metal shell 17.
  • two downward angled portions 23 are provided on two relatively distant circumferential sections of the edge 21, which can be inserted into the gap between the edge 16 and the sheet metal shell 17.
  • An outer section 24 projects outward from the area 19 of the heat transfer element 18 beyond the edge of the heating element.
  • the sensor socket 28 is a sensor socket filled with an expansion liquid, which is connected via a capillary tube 29 to a temperature regulator, not shown, which regulates the heating of the heating element.
  • the sensor can 28 is pressed by a compression spring 30 against the heat transfer surface 27, which is supported on a holding mechanism 31 which guides the sensor can and is attached to the outer section of the heat transfer element.
  • the arrangement of the sensor socket and the holding mechanism can be arrangements according to German patents 15 65 512 or 24 22 687. However, other sensor types and attachments are also possible. For example, an electrical NTC or PTC sensor can also be used, which is pressed on resiliently or is fixedly attached to the outer section 24. The design of the outer section is completely free. As a result, the sensor arrangement can also be chosen arbitrarily. For example, it is also possible to bend the outer section 90 ° with respect to the heated section 19 and to position the sensor from the side. This could U. the size can be kept smaller.
  • the temperature sensing device 32 which is formed from the heat transfer element 18 and the temperature sensor 28, is easy to attach to the heating element 11 by fastening it through the two relatively widely spaced push-on fasteners 22, 23 and finally holding it by clamping it between the edge and the glass ceramic plate.
  • the attachment can be made at any point on the circumference, so that the situation Installation needs can be adapted.
  • the attachment is not limited to a specific type or size of heating elements.
  • the same temperature sensing device can be attached to heating elements of different diameters.
  • the heating resistors can be arranged in a simple manner and no longer need to be deflected around the sensor area.
  • the size and shape of the inner portion 20 depends on various factors. These are, on the one hand, the distance of the heating resistors from the glass ceramic plate, their performance, the desired access by the temperature controller, the thickness of the heat transfer element and the size and intensity of the contact between the heat transfer element and the glass ceramic plate. Good contact is advantageous here, but is not required over the entire area.
  • the heat transfer element 18 could consist of a brass sheet 0.5 mm thick, which has dimensions of 80 to 90 mm in the circumferential direction of the heating element and whose maximum penetration depth T (see FIG. 2) in the heated area 20 is up to 25 mm.
  • the invention provides the advantage that the heat supplied to the temperature sensor is conducted to the outside without the need to arrange the temperature sensor itself in the heated area, where the temperature sensor is in a colder environment and only receives the heat in a very defined manner.
  • a conventional protection element for example consisting of a rod-shaped temperature sensor arranged transversely over the heating surface, against overheating of the glass ceramic plate.
  • stiffening ribs or beads can be provided there, which run radially and axially, crossing one another.
  • Aluminum-plated steel sheet can also be used as the material for the heat transfer element.
  • the surface in the heated inner section 20 can be coated with a matt black, i.e. H. black-coated, heat-resistant lacquer in relation to radiant heat, in order to improve and equalize the absorption of radiant heat.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Ceramic Engineering (AREA)
  • Resistance Heating (AREA)
  • Electric Stoves And Ranges (AREA)
  • Cookers (AREA)
  • Control Of High-Frequency Heating Circuits (AREA)
  • Baking, Grill, Roasting (AREA)

Claims (6)

1. Elément chauffant par rayonnement pour une unité de cuisson comportant : une surface de cuisson (14), notamment en céramique vitreuse, dans lequel le chauffage est obtenu par le rayonnement de résistances chauffantes (13) qui sont disposées dans un isolant (12) repris par une coquille-support (17) ; un détecteur de température (28), disposé à l'extérieur de l'élément chauffant dans la région de son bord, pour un dispositif de régulation et un élément de transmission de la chaleur (18) qui se trouve en contact thermique avec le détecteur de température (28), lequel élément de transmission de la chaleur en appui de surface contre la face inférieure de la surface de cuisson (14) s'étend entre la surface de cuisson (14) et le bord de l'isolant (12) limitrophe de celle-ci et dont la section extérieure (24) présente un espacement par rapport à la surface de cuisson (14), caractérisé par le fait que l'élément de transmission de la chaleur (18) comporte une section intérieure (20) qui pénètre, depuis l'extérieur, dans la région chauffée de l'élément chauffant (11), présente un espacement par rapport aux résistances chauffantes (13), est aussi adjacente à la surface de cuisson (14) dans la région chauffée par rayonnement et recouvre les résistances chauffantes (13) situées vers l'extérieur, sur une partie de leur pourtour, et que l'élément de transmission de la chaleur (18) comporte un dispositif d'attache (22, 23) qui comporte deux pattes de fixation (22) de préférence à ressort, disposées de part et d'autre de l'élément chauffant (11), lesquelles sont enfichables par le dessus sur le bord de la coquille-support (17).
2. Elément chauffant selon la revendication 1, caractérisé par le fait que la section intérieure (20) est allongée suivant la direction périphérique.
3. Elément chauffant selon la revendication 2, caractérisé par le fait que la section intérieure (20) a la forme d'une lentille dont l'extension longitudinale s'étend suivant la direction périphérique.
4. Elément chauffant selon l'une quelconque des revendications précédentes, caractérisé par le fait qu'un mécanisme de maintien (31) pour le maintien sous pression élastique du détecteur de température (28) est prévu sur la face inférieure de la section extérieure (24).
5. Elément chauffant selon l'une quelconque des revendications précédentes, caractérisé par le fait que l'élément de transmission de la chaleur (18) a une configuration générale en forme de T dont la branche transversale pour une partie, constitue la section intérieure (20), et pour une autre partie est serrée entre le bord (16) de l'isolant (12) et la surface de cuisson (14). une fixation enfichable (22, 23) étant prévue sur le bord (21) tourné vers l'extérieur de cette branche, et dont la branche médiane forme la section extérieure (24).
6. Elément chauffant selon l'une quelconque des revendications précédentes, caractérisé par le fait que la section intérieure (20) de l'élément de transmission de la chaleur (18), éventuellement renforcée par des nervures, est munie d'un revêtement agissant comme un corps noir en ce qui concerne la chaleur.
EP80103010A 1979-06-13 1980-05-30 Elément chauffant par rayonnement pour une unité de cuisson, muni d'un détecteur de température Expired EP0021107B2 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT80103010T ATE2925T1 (de) 1979-06-13 1980-05-30 Heizelement fuer eine kocheinheit mit einem temperaturfuehler.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2923884 1979-06-13
DE2923884A DE2923884C2 (de) 1979-06-13 1979-06-13 Regeleinrichtung zur Ankopplung an Heizelemente für Glaskeramik-Kochflächen

Publications (3)

Publication Number Publication Date
EP0021107A1 EP0021107A1 (fr) 1981-01-07
EP0021107B1 EP0021107B1 (fr) 1983-03-30
EP0021107B2 true EP0021107B2 (fr) 1987-01-21

Family

ID=6073117

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80103010A Expired EP0021107B2 (fr) 1979-06-13 1980-05-30 Elément chauffant par rayonnement pour une unité de cuisson, muni d'un détecteur de température

Country Status (6)

Country Link
EP (1) EP0021107B2 (fr)
JP (1) JPS563023A (fr)
AT (1) ATE2925T1 (fr)
DE (2) DE2923884C2 (fr)
ES (1) ES492355A0 (fr)
ZA (1) ZA803491B (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4038017A1 (de) * 1990-11-29 1992-06-04 Ego Elektro Blanc & Fischer Elektrokochplatte

Families Citing this family (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3204119A1 (de) * 1981-02-10 1982-11-18 Micropore International Ltd., Droitwich, Worcestershire Elektroherd mit temperaturwarneinrichtung
NZ199685A (en) * 1981-02-18 1985-04-30 Micropore International Ltd Cooker element with temperature warning indication
DE8109131U1 (de) * 1981-03-27 1981-08-20 E.G.O. Elektro-Geräte Blanc u. Fischer, 7519 Oberderdingen Temperaturfuehlanordnung fuer elektrische strahlheizkoerper
FR2515790B1 (fr) * 1981-10-29 1986-12-12 Dietrich De Perfectionnement aux indicateurs de chaleur residuelle pour tables ou plans de cuisson a energie electrique
JPS58157421U (ja) * 1982-04-16 1983-10-20 フジマル工業株式会社 電気調理器
DE3315333A1 (de) * 1983-04-28 1984-10-31 E.G.O. Elektro-Geräte Blanc u. Fischer, 7519 Oberderdingen Kochgeraet mit mehreren elektrischen kochplatten
DE3503648C2 (de) * 1984-09-22 1994-08-11 Ego Elektro Blanc & Fischer Strahlheizkörper für Kochgeräte
EP0176027B1 (fr) * 1984-09-22 1989-02-01 E.G.O. Elektro-Geräte Blanc u. Fischer Elément chauffant à rayons pour appareils de cuisson
US4755655A (en) * 1986-12-04 1988-07-05 General Electric Company Thermal protection arrangement for solid disk glass cooktop
DE3703768A1 (de) * 1987-02-07 1988-08-18 Fissler Gmbh Vorrichtung zum erfassen der temperatur einer mittels heizwicklungen oder halogenlampen aufgeheizten glaskeramikplatte
DE9312369U1 (de) * 1993-08-18 1994-12-15 Bosch Siemens Hausgeraete Kochfeld
DE19638517A1 (de) * 1996-09-20 1998-03-26 Ako Werke Gmbh & Co Strahlungsheizkörper für eine Kochstelle
IT240975Y1 (it) * 1996-10-25 2001-04-20 Whirpool Europ S R L Dispositivo di controllo della temperatura e di sicurezza associatoa un elemento riscaldante di un piano di cottura in vetroceramica
DE19852166B4 (de) * 1998-11-12 2006-05-11 Eika, S. Coop. Strahlungsheizeinrichtung
DE10006956A1 (de) 2000-02-16 2001-08-23 Bsh Bosch Siemens Hausgeraete Kochfeld mit Temperaturfühler
DE10006954A1 (de) 2000-02-16 2001-10-11 Bsh Bosch Siemens Hausgeraete Kochfeld mit Temperaturfühler
DE10006974A1 (de) 2000-02-16 2001-08-23 Bsh Bosch Siemens Hausgeraete Kochfeld mit Temperaturfühler
EP2131625B1 (fr) * 2008-03-19 2012-11-21 Rational AG Appareil de cuisson avec une plaque de cuisson avec un élément thermocouple
ES2341827B1 (es) * 2008-05-23 2011-05-16 Bsh Electrodomesticos España, S.A. Campo de coccion con una placa de campo de coccion.
US10006638B2 (en) 2016-01-04 2018-06-26 Haier Us Appliance Solutions, Inc. Cooktop assemblies and methods for operating same
ES2713382A1 (es) * 2017-11-20 2019-05-21 Bsh Electrodomesticos Espana Sa Campo de coccion con proteccion frente al sobrecalentamiento

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DE913335C (de) * 1954-04-29 Siemens-Schuckertwerke Aktiengesellschaft, Berlin Und Erlangen Elektrisch beheizte Kochplatte mit einem Temperaturregler
DE7735867U1 (fr) * 1900-01-01 Bosch-Siemens Hausgeraete Gmbh, 7000 Stuttgart
US2148407A (en) * 1937-07-06 1939-02-21 Standard Electric Mfg Corp Surface burner control
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AT189267B (de) * 1955-07-29 1957-03-11 Elin Ag Elek Ind Wien Temperaturschutz für elektrische Maschinen
DE1133584B (de) * 1961-03-18 1962-07-19 Busch Jaeger Duerener Metall Temperaturregler oder -melder
US3612829A (en) * 1970-07-17 1971-10-12 Gen Motors Corp Ceramic top infrared cooking assembly
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DE2154566A1 (de) * 1971-11-03 1973-05-10 Theodor Sebiger Automatikkochplatte zur anordnung in herdmulden und aehnlich gearteten aufnahmen
AT312759B (de) * 1972-01-19 1974-01-25 Elektra Bregenz Gmbh Einrichtung zum thermischen Behandeln von Koch- und/oder Bratgut
DE7641069U1 (de) * 1976-12-30 1978-06-22 Bosch-Siemens Hausgeraete Gmbh, 7000 Stuttgart Kochplatte, vorzugsweise glaskeramik- kochplatte
DE2747652C2 (de) * 1977-10-24 1984-04-05 Bosch-Siemens Hausgeräte GmbH, 7000 Stuttgart Elektrokochgerät

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4038017A1 (de) * 1990-11-29 1992-06-04 Ego Elektro Blanc & Fischer Elektrokochplatte

Also Published As

Publication number Publication date
JPS563023A (en) 1981-01-13
ZA803491B (en) 1981-06-24
DE2923884A1 (de) 1980-12-18
DE3062515D1 (en) 1983-05-05
ES8102450A1 (es) 1980-12-16
EP0021107B1 (fr) 1983-03-30
EP0021107A1 (fr) 1981-01-07
DE2923884C2 (de) 1982-12-02
ATE2925T1 (de) 1983-04-15
ES492355A0 (es) 1980-12-16

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