EP0927504B1 - Conducteur chauffant pour une plaque de cuisson - Google Patents

Conducteur chauffant pour une plaque de cuisson 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
Authority
EP
European Patent Office
Prior art keywords
heating
portions
bars
geometric pattern
stabilizing
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
EP97942933A
Other languages
German (de)
English (en)
Other versions
EP0927504A1 (fr
Inventor
Günter Dittmar
Roman-Hartmut Wauer
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.)
Diehl AKO Stiftung and Co KG
Original Assignee
Diehl AKO Stiftung and Co KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Diehl AKO Stiftung and Co KG filed Critical Diehl AKO Stiftung and Co KG
Publication of EP0927504A1 publication Critical patent/EP0927504A1/fr
Application granted granted Critical
Publication of EP0927504B1 publication Critical patent/EP0927504B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00—Ohmic-resistance heating
    • H05B3/68—Heating arrangements specially adapted for cooking plates or analogous hot-plates
    • H05B3/74—Non-metallic plates, e.g. vitroceramic, ceramic or glassceramic hobs, also including power or control circuits
    • H05B3/748—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.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Resistance Heating (AREA)
  • Surface Heating Bodies (AREA)
  • Cookers (AREA)
  • Baking, Grill, Roasting (AREA)
  • Table Equipment (AREA)
  • Conductive Materials (AREA)

Claims (5)

  1. Conducteur chauffant qui peut être intégré, en un motif géométrique, à un corps chauffant radiant d'une zone de cuisson, et qui est séparé d'une feuille métallique, sous la forme ou la forme partielle du motif géométrique, et qui constitue des ponts chauffants (1), des ponts de stabilisation (5), dont la largeur est inférieure à la largeur des ponts chauffants (1), étant formés dans le plan du motif géométrique, de manière que les ponts de stabilisation (5) puissent être séparés lorsqu'est appliquée une tension électrique non dommageable pour les ponts chauffants (1),
    caractérisé en ce que la feuille métallique présente une épaisseur comprise entre 0,5 et 0,1 millimètre, pour un diamètre du motif géométrique de 100 à 300 millimètres, deux ponts chauffants (1) voisins étant reliés à des pattes de maintien (2, 3) ou à des ponts de liaison (7,8) intérieurs et extérieurs qui servent de pattes de maintien, en ce que les ponts de stabilisation (5) se trouvent entre des pattes de maintien (2, 3) voisines ou les ponts de liaison (7, 8) sur le contour extérieur du motif géométrique, et en ce que le conducteur chauffant présente des connexions électriques (4) qui sont plus larges que les ponts chauffants (1), et entre les connexions électriques (4) se trouve au moins un pont de stabilisation (5).
  2. Conducteur chauffant selon la revendication 1, caractérisé en ce que les ponts de stabilisation 5 sont prévus entre les pattes de maintien intérieures et extérieures (2, 3) ou ponts de liaison (7, 8).
  3. Conducteur chauffant selon la revendication 1 ou 2, caractérisé en ce qu'il présente un motif géométrique en spirale et en ce que les ponts de stabilisation (5) se trouvent entre des spires voisines.
  4. Conducteur chauffant selon l'une des revendications 1 à 3, caractérisé en ce que les ponts chauffants (1) ont une section profilée.
  5. Conducteur chauffant selon l'une des revendications précédentes, caractérisé en ce qu'il présente un motif géométrique sensiblement circulaire et en ce que les ponts de stabilisation (5) s'étendent à l'extérieur sur ce motif géométrique de manière à former un contour extérieur du conducteur chauffant sensiblement lisse et de forme circulaire.
EP97942933A 1996-09-21 1997-09-16 Conducteur chauffant pour une plaque de cuisson Expired - Lifetime EP0927504B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19638832A DE19638832A1 (de) 1996-09-21 1996-09-21 Heizleiter für ein Kochfeld
DE19638832 1996-09-21
PCT/EP1997/005055 WO1998012898A1 (fr) 1996-09-21 1997-09-16 Conducteur chauffant pour une plaque de cuisson

Publications (2)

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

Family

ID=7806506

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97942933A Expired - Lifetime EP0927504B1 (fr) 1996-09-21 1997-09-16 Conducteur chauffant pour une plaque de cuisson

Country Status (11)

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

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006511607A (ja) * 2002-12-20 2006-04-06 バーゼル、ポリオレフィン、ゲゼルシャフト、ミット、ベシュレンクテル、ハフツング モノシクロペンタジエニル錯体
DE102006034077A1 (de) * 2005-08-16 2007-02-22 Robert Bosch Gmbh Filtereinrichtung mit einer Heizung
DE102014014069A1 (de) 2014-09-29 2016-03-31 Forschungszentrum Jülich GmbH Hochleistungsheizer
KR102110410B1 (ko) * 2018-08-21 2020-05-14 엘지전자 주식회사 전기 히터

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 (ja) * 1982-02-26 1983-09-02 Hitachi Ltd 流体漏れ検出素子
JPH0355277Y2 (fr) * 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
DE59703817D1 (de) 2001-07-19
ES2159878T3 (es) 2001-10-16
AU720391B2 (en) 2000-06-01
AU4458997A (en) 1998-04-14
CZ97999A3 (cs) 1999-08-11
DE19638832A1 (de) 1998-03-26
ATE202259T1 (de) 2001-06-15
EP0927504A1 (fr) 1999-07-07
CZ290518B6 (cs) 2002-08-14
WO1998012898A1 (fr) 1998-03-26
JP2001507499A (ja) 2001-06-05
PL332722A1 (en) 1999-10-11
CA2264293A1 (fr) 1998-03-26
US6137090A (en) 2000-10-24

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