EP0927504A1 - Heizleiter für ein kochfeld - Google Patents
Heizleiter für ein kochfeldInfo
- Publication number
- EP0927504A1 EP0927504A1 EP97942933A EP97942933A EP0927504A1 EP 0927504 A1 EP0927504 A1 EP 0927504A1 EP 97942933 A EP97942933 A EP 97942933A EP 97942933 A EP97942933 A EP 97942933A EP 0927504 A1 EP0927504 A1 EP 0927504A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- heating
- webs
- heating conductor
- stabilizing
- conductor according
- 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.)
- Granted
Links
- 239000004020 conductor Substances 0.000 title claims abstract description 47
- 238000010411 cooking Methods 0.000 title 1
- 238000010438 heat treatment Methods 0.000 claims abstract description 79
- 239000011888 foil Substances 0.000 claims abstract description 14
- 239000002184 metal Substances 0.000 claims abstract description 13
- 230000000087 stabilizing effect Effects 0.000 claims description 22
- 230000006641 stabilisation Effects 0.000 abstract description 7
- 230000005855 radiation Effects 0.000 abstract description 2
- 238000011105 stabilization Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 3
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- 238000000137 annealing Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 239000002241 glass-ceramic Substances 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 230000003637 steroidlike Effects 0.000 description 1
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 heating conductor that can be installed in a geometric pattern in a radiant heater of a hob.
- EP 0 175 662 B1 describes a heating conductor, the geometric pattern of which is formed by stamping from a foil laminate enclosing a metal foil.
- This heating conductor is only suitable for temperatures up to a maximum of 400 C and is therefore for one Radiant heaters cannot be used. Flexibility of the heating conductor is desirable here because it is to be installed in vehicle seats. There is an auxiliary bridge between the power connections, which has to be cut out after the electrical connection.
- the object of the invention is to propose a heating conductor of the type mentioned at the outset, which can be easily installed in the radiant heater and has good radiation properties.
- Metal foil for example 0.05 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 structure that bends easily in itself and in which the heating webs easily to bend.
- the heating conductor is removed from the metal foil
- Stabilizing webs exist which lead to a certain stiffening of the structure of the heating conductor, so that its transport and assembly is less prone to failure.
- the stabilizing webs inevitably form undesired electrical short-circuits in the heating conductor
- Heating bars They must be removed before operation. This is done by applying an electrical voltage that leads to a current in the stabilizing bars, which heats them up so that they burn out.
- the heating webs are not damaged because their width is much larger than that of the stabilizing webs.
- the thickness of the stabilization webs and the heating webs is the same because they are made of the same metal foil come .
- two adjacent heating webs are connected to holding tabs or connecting webs, and the stabilizing webs exist between adjacent holding tabs or connecting webs.
- the stabilizing webs run on the outside of the geometric pattern.
- 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.
- the heating conductor is cut out in a desired geometric pattern from a thin metal foil of the same thickness throughout, for example by a cutting process, punching process or etching process.
- the thickness of the metal foil is, for example, approximately 0.05 mm to 0.1 mm.
- the heating conductor forms heating webs (1), the width of which is selected in connection with the specific electrical resistance of the metal foil so that the heating webs glow during operation. You take it Temperatures above 600 ° C to 1100 ° C.
- the width of the heating webs is much larger than their thickness, ie the thickness of the metal foil.
- the width is about 2mm to 4mm.
- the width of the heating elements lies in the plane of the geometric pattern.
- the heating conductors according to FIGS. 1 to 3 have outer retaining tabs (2) which lie on a circular circumference which is customary in hobs.
- the outer retaining tabs (2) each connect two mutually parallel heating bars (1).
- Inner holding tabs (3) connect the parallel heating bars (1) on their side facing away from the holding tabs (2), so that in the end the heating bars (l) are electrically in series.
- power connections (4) are formed on the heating conductor.
- the outer retaining tabs (2), the inner retaining tabs (3) and the power connections (4) are so wider than the heating bars (1) that they do not reach the annealing temperature during operation.
- the heating webs (1) run parallel in a right and left semicircle.
- the inner retaining tabs (3) lie in two rows of a diagonal zone of the circular shape.
- Stabilizing webs (5) each exist between two adjacent outer holding straps (2) and inner holding straps (3) and the power connections (4). For the sake of simplicity, not all stabilizing webs are designated by 5 in the figures.
- the stabilizing webs (5) are left in the process of removing the heating conductor from the metal foil. The current through which the
- Stabilizing bars (5) is much smaller than that of the heating bars (l).
- the stabilizing bars (5) stiffen the heating conductor. It also ensures that the heating bars (l) cannot buckle during transport and assembly.
- the heating conductor is composed of six essentially identical segments which are electrically and mechanically connected to one another at connection point 6). Each segment has outer retaining tabs (2) and inner retaining tabs (3). There are stabilizing webs (5) between adjacent retaining tabs, which are also not all designated here. The stabilizing webs (5) of the outer retaining tabs (2) lie on the outer circumference of the circular shape. This results in a smooth outer contour that prevents snagging.
- a pair of parallel heating elements (1) form a beam of the star-shaped pattern. All outer
- Retaining tabs (2) each connecting a pair of heating elements, lie on the circumference.
- the jets are alternately radially of different lengths, the inner retaining tabs (3), each of which connects a pair of heating elements, lie on circles of different diameters.
- Stabilizing webs (5) are provided here between the outer retaining tabs (2).
- stabilizing webs (5) are provided between the inner retaining tabs (3) and adjacent heating webs (1).
- radial heating bars (1) are connected on the outside with connecting bars (7) and on the inside with connecting bars (8).
- the connecting webs (7, 8) can take over the functions of the retaining tabs (2, 3).
- the outer connecting webs (7) can also be designed so that they glow during operation.
- FIG. 5 shows a heating conductor with a spiral pattern. To stabilize the spiral shape during transport and assembly are between The adjacent stabilizing webs (5) are provided adjacent turns of the heating web (1). 5 run on four radial lines.
- the stabilization bars (5) are always arranged in dependence on the respective geometric pattern of the heating conductor in such a way that the desired stiffening results.
- the heating conductor which is separated from the metal foil and has the stabilization webs (5), is placed on a conventional insulating base arranged in a tin pot. Then the retaining tabs (2, 3) are fixed by means of retaining elements. Then a uniform or pulsed electrical voltage is then applied to the current connection () or to other suitable points on the heating conductor. This voltage leads to a current flow in the stabilization bars (5).
- the stabilization bars (5) heat up so strongly that they burn out and thus no longer represent electrical short circuits between the heating bars (1). After the stabilizing (5) has burned through or melted, the radiant heater is ready for operation and can be put into operation under a glass ceramic plate.
- An additional stiffening of the heating conductor can be achieved in that the heating webs (1) are U-shaped or V-shaped in cross-section. The profiling is created after the heating conductor has been removed from the metal foil and before it is installed in the radiant heater.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Resistance Heating (AREA)
- Surface Heating Bodies (AREA)
- Baking, Grill, Roasting (AREA)
- Cookers (AREA)
- Table Equipment (AREA)
- Conductive Materials (AREA)
Description
Claims
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 (de) | 1996-09-21 | 1997-09-16 | Heizleiter für ein kochfeld |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0927504A1 true EP0927504A1 (de) | 1999-07-07 |
EP0927504B1 EP0927504B1 (de) | 2001-06-13 |
Family
ID=7806506
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP97942933A Expired - Lifetime EP0927504B1 (de) | 1996-09-21 | 1997-09-16 | Heizleiter für ein kochfeld |
Country Status (11)
Country | Link |
---|---|
US (1) | US6137090A (de) |
EP (1) | EP0927504B1 (de) |
JP (1) | JP2001507499A (de) |
AT (1) | ATE202259T1 (de) |
AU (1) | AU720391B2 (de) |
CA (1) | CA2264293A1 (de) |
CZ (1) | CZ290518B6 (de) |
DE (2) | DE19638832A1 (de) |
ES (1) | ES2159878T3 (de) |
PL (1) | PL332722A1 (de) |
WO (1) | WO1998012898A1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102014014069A1 (de) | 2014-09-29 | 2016-03-31 | Forschungszentrum Jülich GmbH | Hochleistungsheizer |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7507688B2 (en) * | 2002-12-20 | 2009-03-24 | Basell Polyolefine Gmbh | Monocyclopentadienyl complexes |
DE102006034077A1 (de) * | 2005-08-16 | 2007-02-22 | Robert Bosch Gmbh | Filtereinrichtung mit einer Heizung |
KR102110410B1 (ko) * | 2018-08-21 | 2020-05-14 | 엘지전자 주식회사 | 전기 히터 |
Family Cites Families (6)
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 (de) * | 1985-03-29 | 1991-12-09 | ||
GB8704467D0 (en) * | 1987-02-25 | 1987-04-01 | Thorn Emi Appliances | Electrically resistive tracks |
-
1996
- 1996-09-21 DE DE19638832A patent/DE19638832A1/de not_active Withdrawn
-
1997
- 1997-09-16 CZ CZ1999979A patent/CZ290518B6/cs not_active IP Right Cessation
- 1997-09-16 WO PCT/EP1997/005055 patent/WO1998012898A1/de active IP Right Grant
- 1997-09-16 US US09/269,111 patent/US6137090A/en not_active Expired - Fee Related
- 1997-09-16 CA CA002264293A patent/CA2264293A1/en not_active Abandoned
- 1997-09-16 ES ES97942933T patent/ES2159878T3/es not_active Expired - Lifetime
- 1997-09-16 AU AU44589/97A patent/AU720391B2/en not_active Ceased
- 1997-09-16 AT AT97942933T patent/ATE202259T1/de not_active IP Right Cessation
- 1997-09-16 DE DE59703817T patent/DE59703817D1/de not_active Expired - Fee Related
- 1997-09-16 JP JP51427798A patent/JP2001507499A/ja active Pending
- 1997-09-16 EP EP97942933A patent/EP0927504B1/de not_active Expired - Lifetime
- 1997-09-16 PL PL97332722A patent/PL332722A1/xx unknown
Non-Patent Citations (1)
Title |
---|
See references of WO9812898A1 * |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102014014069A1 (de) | 2014-09-29 | 2016-03-31 | Forschungszentrum Jülich GmbH | Hochleistungsheizer |
WO2016050229A1 (de) | 2014-09-29 | 2016-04-07 | Forschungszentrum Jülich GmbH | Hochleistungsheizer |
Also Published As
Publication number | Publication date |
---|---|
AU720391B2 (en) | 2000-06-01 |
CZ97999A3 (cs) | 1999-08-11 |
CA2264293A1 (en) | 1998-03-26 |
CZ290518B6 (cs) | 2002-08-14 |
ES2159878T3 (es) | 2001-10-16 |
JP2001507499A (ja) | 2001-06-05 |
US6137090A (en) | 2000-10-24 |
WO1998012898A1 (de) | 1998-03-26 |
DE19638832A1 (de) | 1998-03-26 |
DE59703817D1 (de) | 2001-07-19 |
AU4458997A (en) | 1998-04-14 |
EP0927504B1 (de) | 2001-06-13 |
PL332722A1 (en) | 1999-10-11 |
ATE202259T1 (de) | 2001-06-15 |
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