EP0927504B1 - Heat conductor for a cooking plate - Google Patents

Heat conductor for a cooking plate Download PDF

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Publication number
EP0927504B1
EP0927504B1 EP97942933A EP97942933A EP0927504B1 EP 0927504 B1 EP0927504 B1 EP 0927504B1 EP 97942933 A EP97942933 A EP 97942933A EP 97942933 A EP97942933 A EP 97942933A EP 0927504 B1 EP0927504 B1 EP 0927504B1
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EP
European Patent Office
Prior art keywords
heating
portions
bars
geometric pattern
stabilizing
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EP97942933A
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German (de)
French (fr)
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EP0927504A1 (en
Inventor
Günter Dittmar
Roman-Hartmut Wauer
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Diehl AKO Stiftung and Co KG
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Diehl AKO Stiftung and Co KG
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    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00—Ohmic-resistance heating
    • H05B3/68—Heating arrangements specially adapted for cooking plates or analogous hot-plates
    • H05B3/74—Non-metallic plates, e.g. vitroceramic, ceramic or glassceramic hobs, also including power or control circuits
    • H05B3/748—Resistive heating elements, i.e. heating elements exposed to the air, e.g. coil wire heater

Definitions

  • the invention relates to a heat conductor in a geometric pattern in a radiant heater of a hob can be installed, according to the preamble of claim 1.
  • DE 42 29 375 A1 and EP 0 585 831 A2 are made of a flat strip existing heating conductor described.
  • the desired spiral geometric Pattern is formed by the flat ribbon in corresponding turns is laid on the insulating floor of the radiant heater.
  • the big ones are Surfaces of adjacent flat strip sections facing each other. The Only the narrow edges of the flat belt face the hob.
  • such a flat ribbon heating conductor is in a steroid geometric pattern.
  • Such flat ribbon heating conductors are complex to lay and to fix on the insulating floor. Cover your narrow edges facing the hob only a small part of the hob.
  • EP 0 175 662 B1 describes a heating conductor whose geometric pattern by punching from a foil laminate enclosing a metal foil is formed. This heating conductor is only suitable for temperatures up to a maximum 400 ° C and is therefore not suitable for a radiant heater. A bendability the heating conductor is desirable here because it can be installed in vehicle seats should. There is an auxiliary bridge between the power connections cut out electrical connections.
  • US-A-3,495,328 discloses an electric heating unit consisting of individual Heating webs is formed, which are at a parallel distance from each other in the unit are arranged. The parallel arrangement between the heating elements ensures the parallel arrangement Spacers. There are very thin webs in the outer edge area set up only for a certain stability of the electric heating unit during ensure the manufacturing process and transport. These very thin ones Heating bars are burned out by applying a suitable electrical voltage, so that only after cutting these very thin heating bars results in electrically functional heating unit.
  • a resistance heating device has been described in US Pat. No. 4,286,377, which is formed from heating webs arranged parallel to one another.
  • This electrical Heating unit consists entirely of a metal foil, in which an inner and in an outer area, the heating elements by meandering lines have been formed.
  • the object of the invention is to propose a heating conductor of the type mentioned in the introduction, which is easy to install in the radiant heater and has good radiation properties having.
  • the above object is characterized by the features of the Part of claim 1 solved.
  • Such a heat conductor is 0.05 in this case because of the thinness of the metal foil mm to 0.1 mm, and the size of the diameter of the geometric pattern, for example 10 cm to 30 cm, a sensitive, not dimensionally stable, that bends easily in itself and in which the heating elements bend slightly. This makes it difficult to handle during transport and assembly.
  • the metal foil stabilization bars exist, which lead to a certain stiffening lead the structure of the heating conductor, so that its transport and assembly little is prone to failure.
  • the stabilizing bars inevitably form in the heating conductor undesirable electrical short circuits in the heating elements. You must before operating be eliminated. This is done by applying an electrical voltage, which leads to a current in the stabilizing bars, which heats them up in such a way that blow them.
  • the heating webs are not damaged because of their width is significantly larger than that of the stabilizing bars.
  • the thickness of the stabilizing bars and the heating element is the same size because it is made of the same metal foil come.
  • two adjacent heating webs are included Retaining tabs or connecting bars connected and between adjacent retaining tabs or connecting webs there are the stabilization bars.
  • the stabilizing webs run on the outside of the geometric Template.
  • the heating conductor is in a desired geometric Pattern from a thin, consistently thick Metal foil, for example by a cutting process, Stamping process or etching process, separated.
  • the thickness of the Metal foil is, for example, about 0.05 mm to 0.1 mm.
  • the heating conductor forms heating webs (1), the width of which related to the specific electrical Resistance of the metal foil is chosen so that the Glow heating bars during operation. You take it Temperatures above 600 ° C to 1100 ° C. The width of the Heating bars are much larger than their thickness, i.e. the Thickness of the metal foil. The width is about 2mm to 4mm. The width of the heating webs lies in the level of geometric pattern.
  • the heating conductors according to FIGS. 1 to 3 have outer Holding tabs (2) on a hob usual circumference.
  • the outer retaining tabs (2) connect two parallel heating bars (1).
  • Inner retaining tabs (3) connect the parallel heating bars (1) on its side facing away from the retaining tabs (2), see above that in the end the heating bars (1) electrically in series lie.
  • power connections on the heating conductor (4) educated.
  • the outer retaining tabs (2), the inner Retaining tabs (3) and the power connections (4) are of this type wider than the heating webs (1) that they are not in operation come to annealing temperature.
  • the heating webs (1) run parallel in a right and left semicircle.
  • the inner retaining tabs (3) are in two rows a diagonal zone of circular shape.
  • Stabilizing bars (5) Between each two adjacent outer retaining tabs (2) and inner Holding tabs (3) and the power connections (4) exist Stabilizing bars (5).
  • the stabilizing bars (5) are in the The heating conductor is separated from the metal foil ditched. The current through which the Stabilizing bars (5) is much smaller than that the heating bars (1).
  • the stabilizing webs (5) provide stiffening of the heating conductor reached. It also ensures that the heating bars (1) during transport and assembly are not can buckle.
  • the heating conductor is from six essentially identical segments composed at the joints (6) electrically and are mechanically connected. Every segment has outer retaining tabs (2) and inner retaining tabs (3) on. Each exist between adjacent retaining tabs Stabilizing bars (5), which are not all here are designated.
  • the stabilizing bars (5) of the outer Retaining tabs (2) lie on the outer circumference of the circular shape. This results in a smooth outer contour, the one No getting caught.
  • FIG. 3 has a star-shaped pattern on. Form a pair of parallel heating elements (1) a ray of the star pattern. All outer Retaining tabs (2), each connecting a pair of heating elements, lie on the circumference. The rays are alternating radially different lengths, the inner Retaining tabs (3), each connecting a pair of heating elements, lie on circles of different diameters. Stabilizing bars (5) are here between the outer ones Retaining tabs (2) provided. Also are Stabilizing bars (5) between the inner Retaining tabs (3) and adjacent heating elements (1) intended.
  • connection webs (8) are radial heating webs (1) outside with connecting webs (7) and inside with Connection webs (8) connected.
  • the connecting bars (7,8) take over the functions of the retaining tabs (2,3).
  • the outer connecting webs (7) in particular can also do so be trained to glow in operation.
  • Each between the outer connecting webs (7) and the inner Connecting webs (8) are stabilizing webs (5).
  • Fig. 5 is a heating conductor with a spiral Pattern shown. To stabilize the spiral shape during transport and assembly are between adjacent turns of the heating web (1) Stabilizing bars (5) are provided. These run after Fig. 5 on four radial lines.
  • the Stabilizing bars (5) are depending on respective geometric pattern of the heating conductor always so arranged that the desired stiffening results.
  • the stabilizing bars (5) heat up so much that they burn and thus no more electrical short circuits between the Represent heating elements (1). After blowing or The stabilization bars (5) melt through Radiant heater ready for use and can be under start up a glass ceramic plate.
  • heating webs (1) in cross section U- or V-shaped This can result in additional stiffening of the heating conductor can be achieved that the heating webs (1) in cross section U- or V-shaped.
  • the profiling is after the heating conductor has been removed from the metal foil and before installing it in the radiant heater created.

Abstract

PCT No. PCT/EP97/05055 Sec. 371 Date Mar. 19, 1999 Sec. 102(e) Date Mar. 19, 1999 PCT Filed Sep. 16, 1997 PCT Pub. No. WO98/12898 PCT Pub. Date Mar. 26, 1999A heating conductor which can be fitted in a geometrical pattern into a radiant heating body is to be easy to fit and is to have good radiation properties. The heating conductor is separated in the form or partial form of the geometrical pattern out of a metal foil and forms heating limbs (1). In the geometrical pattern there are stabilisation limbs (5) whose width is less than the width of the heating limbs (1) in such a way that they can burn through upon the application of an electrical voltage which is harmless to the heating limbs (1).

Description

Die Erfindung betrifft einen Heizleiter, der in einem geometrischen Muster in einen Strahlungsheizkörper eines Kochfeldes einbaubar ist, nach dem Oberbegriff des Patentanspruches 1.The invention relates to a heat conductor in a geometric pattern in a radiant heater of a hob can be installed, according to the preamble of claim 1.

In der DE 42 29 375 A1 und der EP 0 585 831 A2 ist ein aus einem Flachband bestehender Heizleiter beschrieben. Das gewünschte spiralförmige geometrische Muster wird dadurch gebildet, daß das Flachband in entsprechenden Windungen auf dem Isolierboden des Strahlungsheizkörpers verlegt wird. Dabei sind die großen Oberflächen benachbarter Flachbandabschnitte einander zugewandt. Dem Kochfeld sind nur die schmalen Kanten des Flachbandes zugewandt.DE 42 29 375 A1 and EP 0 585 831 A2 are made of a flat strip existing heating conductor described. The desired spiral geometric Pattern is formed by the flat ribbon in corresponding turns is laid on the insulating floor of the radiant heater. The big ones are Surfaces of adjacent flat strip sections facing each other. The Only the narrow edges of the flat belt face the hob.

Nach der DE 38 00 676 A1 ist ein solcher Flachband-Heizleiter in einem sterförmigen geometrischen Muster verlegt.According to DE 38 00 676 A1, such a flat ribbon heating conductor is in a steroid geometric pattern.

Solche Flachband-Heizleiter sind aufwendig in der Verlegung und in ihrer Fixierung am Isolierboden. Ihre dem Kochfeld zugewandten schmalen Kanten bedekken nur einen kleinen Teil des Kochfeldes.Such flat ribbon heating conductors are complex to lay and to fix on the insulating floor. Cover your narrow edges facing the hob only a small part of the hob.

In der EP 0 175 662 B1 ist ein Heizleiter beschrieben, dessen geometrisches Muster durch Stanzen aus einem eine Metallfolie einschließenden Folienlaminats gebildet ist. Dieser Heizleiter eignet sich nur für Temperaturen bis maximal 400°C und ist somit für einen Strahlungsheizkörper nicht verwendbar. Eine Biegbarkeit des Heizleiters ist hier erwünscht, weil er in Fahrzeugsitze eingebaut werden soll. Zwischen den Stromanschlüssen besteht ein Hilfssteg, der nach dem elektrischen Anschließen herauszuschneiden ist. EP 0 175 662 B1 describes a heating conductor whose geometric pattern by punching from a foil laminate enclosing a metal foil is formed. This heating conductor is only suitable for temperatures up to a maximum 400 ° C and is therefore not suitable for a radiant heater. A bendability the heating conductor is desirable here because it can be installed in vehicle seats should. There is an auxiliary bridge between the power connections cut out electrical connections.

Die US-A-3,495,328 offenbart eine elektrische Heizeinheit, die aus einzelnen Heizstegen gebildet ist, die in einem parallelen Abstand zueinander in der Einheit angeordnet sind. Für die parallele Anordnung sorgen zwischen die Heizstege eingesetzte Distanzelemente. Im äußeren Randbereich sind jeweils sehr dünne Stege eingerichtet, die nur für eine gewisse Stabilität der elektrischen Heizeinheit während des Fertigungsvorganges und des Transportes sorgen. Diese sehr dünnen Heizstege werden durch Anlegen einer geeigneten elektrischen Spannung ausgebrannt, so daß sich erst nach dem Durchtrennen dieser sehr dünnen Heizstege eine elektrisch funktionsfähige Heizeinheit ergibt.US-A-3,495,328 discloses an electric heating unit consisting of individual Heating webs is formed, which are at a parallel distance from each other in the unit are arranged. The parallel arrangement between the heating elements ensures the parallel arrangement Spacers. There are very thin webs in the outer edge area set up only for a certain stability of the electric heating unit during ensure the manufacturing process and transport. These very thin ones Heating bars are burned out by applying a suitable electrical voltage, so that only after cutting these very thin heating bars results in electrically functional heating unit.

In der US-A-4,286,377 ist eine Widerstandsheizeinrichtung beschrieben worden, die aus parallel zueinander angeordneten Heizstegen gebildet ist. Diese elektrische Heizeinheit besteht insgesamt aus einer Metallfolie, bei der in einem inneren und in einem äußeren Bereich die Heizstege durch meanderförmige Linienführung geformt worden sind.A resistance heating device has been described in US Pat. No. 4,286,377, which is formed from heating webs arranged parallel to one another. This electrical Heating unit consists entirely of a metal foil, in which an inner and in an outer area, the heating elements by meandering lines have been formed.

Aufgabe der Erfindung ist es, einen Heizleiter der eingangs genannten Art vorzuschlagen, der einfach im Strahlungsheizkörper montierbar ist und gute Abstrahlungseigenschaften aufweist.The object of the invention is to propose a heating conductor of the type mentioned in the introduction, which is easy to install in the radiant heater and has good radiation properties having.

Erfindungsgemäß ist obige Aufgabe durch die Merkmale des kennzeichnenden Teils des Anspruches 1 gelöst.According to the invention, the above object is characterized by the features of the Part of claim 1 solved.

Ein derartiger Heizleiter ist wegen der Dünne der Metallfolie, in diesem Fall 0,05 mm bis 0,1 mm, und der Größe des Durchmessers des geometrischen Musters, beispielsweise 10 cm bis 30 cm, ein empfindliches, wenig formstabiles Gebildet, das sich in sich selbst leicht biegt und in dem sich die Heizstege leicht biegen. Dadurch ist die Hantierbarkeit beim Transport und bei der Montage erschwert.Such a heat conductor is 0.05 in this case because of the thinness of the metal foil mm to 0.1 mm, and the size of the diameter of the geometric pattern, for example 10 cm to 30 cm, a sensitive, not dimensionally stable, that bends easily in itself and in which the heating elements bend slightly. This makes it difficult to handle during transport and assembly.

Um den Heizleiter zu stabilisieren, läßt man beim Austrennen des Heizleiters aus der Metallfolie Stabilisierungsstege bestehen, die zu einer gewissen Versteifung der Struktur des Heizleiters führen, so daß dessen Transport und Montage wenig störanfällig ist. Die Stabilisierungsstege bilden jedoch zwangsläufig im Heizleiter unerwünschte elektrische Kurzschlüsse der Heizstege. Sie müssen vor dem Betrieb beseitigt werden. Dies geschieht durch Anlegen einer elektrischen Spannung, die in den Stabilisierungsstegen zu einem Strom führt, der diese so aufheizt, daß sie durchbrennen. Die Heizstege werden dabei nicht geschädigt, da ihre Breite wesentlich größer als die der Stabilisierungsstege ist. Die Dicke der Stabilisierungsstege und der Heizstege ist gleich groß, weil sie aus der gleichen Metallfolie stammen.In order to stabilize the heating conductor, one omits when the heating conductor is disconnected the metal foil stabilization bars exist, which lead to a certain stiffening lead the structure of the heating conductor, so that its transport and assembly little is prone to failure. However, the stabilizing bars inevitably form in the heating conductor undesirable electrical short circuits in the heating elements. You must before operating be eliminated. This is done by applying an electrical voltage, which leads to a current in the stabilizing bars, which heats them up in such a way that blow them. The heating webs are not damaged because of their width is significantly larger than that of the stabilizing bars. The thickness of the stabilizing bars and the heating element is the same size because it is made of the same metal foil come.

Vorzugsweise sind jeweils zwei benachbarte Heizstege mit Haltelaschen oder Verbindungsstegen verbunden und zwischen benachbarten Haltelaschen bzw. Verbindungsstegen bestehen die Stabilisierungsstege. Um eine glatte Außenkontur des geometrischen Musters zu erreichen, verlaufen die Stabilisierungsstege außen am geometrischen Muster.Preferably, two adjacent heating webs are included Retaining tabs or connecting bars connected and between adjacent retaining tabs or connecting webs there are the stabilization bars. To be a smooth To achieve the outer contour of the geometric pattern, the stabilizing webs run on the outside of the geometric Template.

Weitere vorteilhafte Ausgestaltungen der Erfindung ergeben sich aus den Unteransprüchen und der folgenden Beschreibung von Ausführungsbeispielen. In der Zeichnung zeigen:

  • Figur 1 einen Heizleiter mit parallelen Heizstegen in seinen zwei Hälften,
  • Figur 2 einen aus sechs Segmenten zusammengesetzten Heizleiter,
  • Figur 3 einen Heizleiter mit sternförmigem Muster,
  • Figur 4 einen Heizleiter mit gegenüber Fig. 3 vereinfachten sternförmigem Muster und
  • Figur 5 einen Heizleiter mit spiralförmigem Muster.
    • Further advantageous refinements of the invention result from the subclaims and the following description of exemplary embodiments. The drawing shows:
  • FIG. 1 shows a heating conductor with parallel heating elements in its two halves,
  • FIG. 2 shows a heating conductor composed of six segments,
  • FIG. 3 shows a heating conductor with a star-shaped pattern,
  • Figure 4 shows a heating conductor with a simplified star-shaped pattern compared to Fig. 3 and
  • Figure 5 shows a heating conductor with a spiral pattern.

    • Der Heizleiter ist in einem gewünschten geometrischen Muster aus einer dünnen, durchgehend gleich dicken Metallfolie, beispielsweise durch einen Schneidvorgang, Stanzvorgang oder Ätzvorgang, ausgetrennt. Die Dicke der Metallfolie beträgt beispielsweise etwa 0,05 mm bis 0,1 mm. Der Heizleiter bildet Heizstege(1), deren Breite im Zusammenhang mit dem spezifischen elektrischen Widerstand der Metallfolie so gewählt ist, daß die Heizstege im Betrieb aufglühen. Sie nehmen dabei Temperaturen über 600°C bis 1100°C an. Die Breite der Heizstege ist wesentlich größer als ihre Dicke, d.h. die Dicke der Metallfolie. Die Breite beträgt etwa 2mm bis 4mm. Die Breite der Heizstege liegt in der Ebene des geometrischen Musters.The heating conductor is in a desired geometric Pattern from a thin, consistently thick Metal foil, for example by a cutting process, Stamping process or etching process, separated. The thickness of the Metal foil is, for example, about 0.05 mm to 0.1 mm. The heating conductor forms heating webs (1), the width of which related to the specific electrical Resistance of the metal foil is chosen so that the Glow heating bars during operation. You take it Temperatures above 600 ° C to 1100 ° C. The width of the Heating bars are much larger than their thickness, i.e. the Thickness of the metal foil. The width is about 2mm to 4mm. The width of the heating webs lies in the level of geometric pattern.

    Die Heizleiter nach den Fig. 1 bis 3 weisen äußere Haltelaschen(2) auf, die auf einem bei Kochfeldern üblichen Kreisumfang liegen. Die äußeren Haltelaschen(2) verbinden jeweils zwei zueinander parallele Heizstege(1). Innere Haltelaschen(3) verbinden die parallelen Heizstege (1) an ihrer den Haltelaschen(2) abgewandten Seite, so daß im Endergebnis die Heizstege(1) elektrisch in Reihe liegen. Außerdem sind am Heizleiter Stromanschlüsse(4) ausgebildet. Die äußeren Haltelaschen(2), die inneren Haltelaschen(3) und die Stromanschlüsse(4) sind derart breiter als die Heizstege(1), daß sie im Betrieb nicht auf Glühtemperatur kommen.The heating conductors according to FIGS. 1 to 3 have outer Holding tabs (2) on a hob usual circumference. The outer retaining tabs (2) connect two parallel heating bars (1). Inner retaining tabs (3) connect the parallel heating bars (1) on its side facing away from the retaining tabs (2), see above that in the end the heating bars (1) electrically in series lie. In addition, there are power connections on the heating conductor (4) educated. The outer retaining tabs (2), the inner Retaining tabs (3) and the power connections (4) are of this type wider than the heating webs (1) that they are not in operation come to annealing temperature.

    Bei dem Heizleiter nach Fig. 1 verlaufen die Heizstege(1) in einem rechten und linken Halbkreis jeweils parallel. Die inneren Haltelaschen(3) liegen dabei in zwei Reihen einer diagonalen Zone der Kreisform. Jeweils zwischen zwei benachbarten äußeren Haltelaschen(2) und inneren Haltelaschen(3) sowie den Stromanschlüssen(4) bestehen Stabilisierungsstege(5). In den Figuren sind zur Vereinfachung nicht alle Stabilisierungsstege mit 5 bezeichnet. Die Stabilisierungsstege(5) sind bei dem Austrennvorgang des Heizleiters aus der Metallfolie stehengelassen. Die stromdurchflossene Breite der Stabilisierungsstege(5) ist wesentlich kleiner als die der Heizstege(1).1, the heating webs (1) run parallel in a right and left semicircle. The inner retaining tabs (3) are in two rows a diagonal zone of circular shape. Between each two adjacent outer retaining tabs (2) and inner Holding tabs (3) and the power connections (4) exist Stabilizing bars (5). In the figures are for Simplification not all stabilization bars with 5 designated. The stabilizing bars (5) are in the The heating conductor is separated from the metal foil ditched. The current through which the Stabilizing bars (5) is much smaller than that the heating bars (1).

    Durch die Stabilisierungsstege(5) ist eine Versteifung des Heizleiters erreicht. Außerdem ist gewährleistet, daß die Heizstege(1) beim Transport und bei der Montage nicht ausknicken können. The stabilizing webs (5) provide stiffening of the heating conductor reached. It also ensures that the heating bars (1) during transport and assembly are not can buckle.

    Beim Ausführungsbeispiel nach Fig. 2 ist der Heizleiter aus sechs im wesentlichen gleichen Segmenten zusammengesetzt, die an Verbindungsstellen(6) elektrisch und mechanisch miteinander verbunden sind. Jedes Segment weist äußere Haltelaschen(2) und innere Haltelaschen(3) auf. Zwischen benachbarten Haltelaschen bestehen jeweils Stabilisierungsstege(5), die auch hier nicht alle bezeichnet sind. Die Stabilisierungsstege(5) der äußeren Haltelaschen(2) liegen auf dem Außenumfang der Kreisform. Es ergibt sich dadurch eine glatte Außenkontur, die ein Verhaken verhindert.In the exemplary embodiment according to FIG. 2, the heating conductor is from six essentially identical segments composed at the joints (6) electrically and are mechanically connected. Every segment has outer retaining tabs (2) and inner retaining tabs (3) on. Each exist between adjacent retaining tabs Stabilizing bars (5), which are not all here are designated. The stabilizing bars (5) of the outer Retaining tabs (2) lie on the outer circumference of the circular shape. This results in a smooth outer contour, the one No getting caught.

    Der Heizleiter nach Fig. 3 weist ein sternförmiges Muster auf. Jeweils ein Paar paralleler Heizstege(1) bilden einen Strahl des sternförmigen Musters. Alle äußeren Haltelaschen(2), die jeweils ein Heizstegpaar verbinden, liegen auf dem Kreisumfang. Die Strahlen sind abwechselnd radial unterschiedlich lang, wobei die inneren Haltelaschen(3), die jeweils ein Heizstegpaar verbinden, auf Kreisen unterschiedlicher Durchmesser liegen. Stabilisierungsstege(5) sind hier zwischen den äußeren Haltelaschen(2) vorgesehen. Außerdem sind Stabilisierungsstege(5) zwischen den inneren Haltelaschen(3) und benachbarten Heizstegen(1) vorgesehen.3 has a star-shaped pattern on. Form a pair of parallel heating elements (1) a ray of the star pattern. All outer Retaining tabs (2), each connecting a pair of heating elements, lie on the circumference. The rays are alternating radially different lengths, the inner Retaining tabs (3), each connecting a pair of heating elements, lie on circles of different diameters. Stabilizing bars (5) are here between the outer ones Retaining tabs (2) provided. Also are Stabilizing bars (5) between the inner Retaining tabs (3) and adjacent heating elements (1) intended.

    Bei dem Heizleiter nach Fig. 4 sind radiale Heizstege(1) außen mit Verbindungsstegen(7) und innen mit Verbindungsstegen (8) verbunden. Die Verbindungsstege(7,8) übernehmen die Funktionen der Haltelaschen(2,3). Speziell die äußeren Verbindungsstege(7) können auch so ausgebildet sein, daß sie im Betrieb glühen. Jeweils zwischen den äußeren Verbindungsstegen(7) und den inneren Verbindungsstegen(8) bestehen Stabilisierungsstege(5).4 are radial heating webs (1) outside with connecting webs (7) and inside with Connection webs (8) connected. The connecting bars (7,8) take over the functions of the retaining tabs (2,3). The outer connecting webs (7) in particular can also do so be trained to glow in operation. Each between the outer connecting webs (7) and the inner Connecting webs (8) are stabilizing webs (5).

    In Fig. 5 ist ein Heizleiter mit einem spiralförmigen Muster dargestellt. Zur Stabilisierung der Spiralform während des Transports und der Montage sind zwischen benachbarten Windungen des Heizstegs(1) die Stabilisierungsstege(5) vorgesehen. Diese verlaufen nach Fig. 5 auf vier radialen Linien.In Fig. 5 is a heating conductor with a spiral Pattern shown. To stabilize the spiral shape during transport and assembly are between adjacent turns of the heating web (1) Stabilizing bars (5) are provided. These run after Fig. 5 on four radial lines.

    Im Rahmen der Erfindung liegen zahlreiche weitere Anordnungen der Stabilisierungsstege(5). Die Stabilisierungsstege(5) werden in Abhängigkeit vom jeweiligen geometrischen Muster des Heizleiters immer so angeordnet, daß sich die gewünschte Versteifung ergibt.Numerous others are within the scope of the invention Arrangements of the stabilizing bars (5). The Stabilizing bars (5) are depending on respective geometric pattern of the heating conductor always so arranged that the desired stiffening results.

    Der aus der Metallfolie ausgetrennte, die Stabilisierungsstege(5) aufweisende Heizleiter wird auf einen üblichen, in einem Blechtopf angeordneten Isolierboden aufgelegt. Anschließend werden die Haltelaschen(2,3) mittels Halteteilen fixiert. Danach wird dann an die Stromanschlüsse(4) oder an andere geeignete Stellen des Heizleiters eine gleichförmige oder impulsförmige elektrische Spannung angelegt. Diese Spannung führt zu einem Stromfluß in den Stabilisierungsstegen(5). Die Stabilisierungsstege(5) erhitzen sich dabei so stark, daß sie durchbrennen und damit nicht mehr elektrische Kurzschlüsse zwischen den Heizstegen(1) darstellen. Nach dem Durchbrennen bzw. Durchschmelzen der Stabilisierungsstege(5) ist der Strahlungsheizkörper betriebsbereit und läßt sich unter einer Glaskeramikplatte in Betrieb nehmen.The one separated from the metal foil, the Stabilizing webs (5) having heating conductors a usual, arranged in a tin pot Insulated floor. Then the Holding straps (2,3) fixed by means of holding parts. After that is then to the power connections (4) or to others suitable places of the heating conductor a uniform or pulsed electrical voltage applied. This Voltage leads to a current flow in the Stabilizing bars (5). The stabilizing bars (5) heat up so much that they burn and thus no more electrical short circuits between the Represent heating elements (1). After blowing or The stabilization bars (5) melt through Radiant heater ready for use and can be under start up a glass ceramic plate.

    Eine zusätzliche Versteifung des Heizleiters kann dadurch erreicht werden, daß die Heizstege(1) im Querschnitt U- oder V-förmig profiliert werden. Die Profilierung wird nach dem Austrennen des Heizleiters aus der Metallfolie und vor dessen Montage im Strahlungsheizkörper geschaffen.This can result in additional stiffening of the heating conductor can be achieved that the heating webs (1) in cross section U- or V-shaped. The profiling is after the heating conductor has been removed from the metal foil and before installing it in the radiant heater created.

    Claims (5)

    1. A heating conductor, which can be installed in a geometric pattern in a radiant heating element of a cooking zone and is separated in the shape of or partial shape of the geometric pattern from a metal foil and forms heating bars (1), in which case stabilizing portions (5) are formed on the plane of the geometric pattern, the width of these portions (5) being less than the width of the heating bars (1), so that the stabilizing portions (5) can be severed when an electric voltage, which is harmless in respect of the heating bars (1), is applied,
      characterized in that
      the metal foil has a thickness of between 0.5 and 0.1 mm in the case of a diameter of the geometric pattern of 100 to 300 mm, two adjacent heating bars (1) respectively being connected by means of retaining portions (2, 3) or inner and outer connecting portions (7, 8) which serve as retaining portions (2, 3);
      in that the stabilizing portions (5) are located between adjacent retaining portions (2, 3) or between the connecting portions (7, 8) on the outer contour of the geometric pattern;
      and in that the heating conductor has terminals (4), which are wider than the heating bars (1), and at least one stabilizing portion (5) is located between the terminals (4).
    2. A heating conductor according to Claim 1,
      characterized in that
      the stabilizing portions (5) are located between the inner and outer retaining portions (2, 3) or between the connecting portions (7, 8).
    3. A heating conductor according to Claim 1 or 2,
      characterized in that
      it has a spiral-shaped geometric pattern and there are stabilizing portions (5) between adjacent spiral windings.
    4. A heating conductor according to Claims 1 to 3,
      characterized in that
      the heating bars (1) are profiled in cross-section.
    5. A heating conductor according to one of the preceding claims,
      characterized in that
      it has a substantially circular geometric pattern and the stabilizing portions (5) run on the outside of this geometric pattern in such a way as to form the outer contour of the heating conductor so that essentially it has the shape of a complete circle.
    EP97942933A 1996-09-21 1997-09-16 Heat conductor for a cooking plate Expired - Lifetime EP0927504B1 (en)

    Applications Claiming Priority (3)

    Application Number Priority Date Filing Date Title
    DE19638832 1996-09-21
    DE19638832A DE19638832A1 (en) 1996-09-21 1996-09-21 Heating conductor for a hob
    PCT/EP1997/005055 WO1998012898A1 (en) 1996-09-21 1997-09-16 Heat conductor for a cooking plate

    Publications (2)

    Publication Number Publication Date
    EP0927504A1 EP0927504A1 (en) 1999-07-07
    EP0927504B1 true EP0927504B1 (en) 2001-06-13

    Family

    ID=7806506

    Family Applications (1)

    Application Number Title Priority Date Filing Date
    EP97942933A Expired - Lifetime EP0927504B1 (en) 1996-09-21 1997-09-16 Heat conductor for a cooking plate

    Country Status (11)

    Country Link
    US (1) US6137090A (en)
    EP (1) EP0927504B1 (en)
    JP (1) JP2001507499A (en)
    AT (1) ATE202259T1 (en)
    AU (1) AU720391B2 (en)
    CA (1) CA2264293A1 (en)
    CZ (1) CZ290518B6 (en)
    DE (2) DE19638832A1 (en)
    ES (1) ES2159878T3 (en)
    PL (1) PL332722A1 (en)
    WO (1) WO1998012898A1 (en)

    Families Citing this family (4)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    US7507688B2 (en) * 2002-12-20 2009-03-24 Basell Polyolefine Gmbh Monocyclopentadienyl complexes
    DE102006034077A1 (en) * 2005-08-16 2007-02-22 Robert Bosch Gmbh Filter device with a heater
    DE102014014069A1 (en) 2014-09-29 2016-03-31 Forschungszentrum Jülich GmbH High performance heater
    KR102110410B1 (en) * 2018-08-21 2020-05-14 엘지전자 주식회사 Electric Heater

    Family Cites Families (6)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    US2399753A (en) * 1944-03-13 1946-05-07 Int Standard Electric Corp Multiple connections for electrical apparatus
    US3495328A (en) * 1967-07-07 1970-02-17 Corning Glass Works Electric heating unit
    US4286377A (en) * 1978-07-03 1981-09-01 General Electric Company Method of manufacture for a resistance heater and temperature sensor
    JPS58147627A (en) * 1982-02-26 1983-09-02 Hitachi Ltd Detecting element for fluid leakage
    JPH0355277Y2 (en) * 1985-03-29 1991-12-09
    GB8704467D0 (en) * 1987-02-25 1987-04-01 Thorn Emi Appliances Electrically resistive tracks

    Also Published As

    Publication number Publication date
    JP2001507499A (en) 2001-06-05
    WO1998012898A1 (en) 1998-03-26
    CZ290518B6 (en) 2002-08-14
    PL332722A1 (en) 1999-10-11
    DE19638832A1 (en) 1998-03-26
    AU720391B2 (en) 2000-06-01
    US6137090A (en) 2000-10-24
    CA2264293A1 (en) 1998-03-26
    CZ97999A3 (en) 1999-08-11
    EP0927504A1 (en) 1999-07-07
    AU4458997A (en) 1998-04-14
    ES2159878T3 (en) 2001-10-16
    DE59703817D1 (en) 2001-07-19
    ATE202259T1 (en) 2001-06-15

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