EP1705957B1 - Conducteur chauffant électrique - Google Patents

Conducteur chauffant électrique Download PDF

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Publication number
EP1705957B1
EP1705957B1 EP20050006168 EP05006168A EP1705957B1 EP 1705957 B1 EP1705957 B1 EP 1705957B1 EP 20050006168 EP20050006168 EP 20050006168 EP 05006168 A EP05006168 A EP 05006168A EP 1705957 B1 EP1705957 B1 EP 1705957B1
Authority
EP
European Patent Office
Prior art keywords
strand
heating conductor
electrical heating
inner strand
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.)
Not-in-force
Application number
EP20050006168
Other languages
German (de)
English (en)
Other versions
EP1705957A1 (fr
Inventor
Reiner Berger
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.)
WET Automotive Systems AG
Original Assignee
WET Automotive Systems AG
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 WET Automotive Systems AG filed Critical WET Automotive Systems AG
Priority to EP20050006168 priority Critical patent/EP1705957B1/fr
Publication of EP1705957A1 publication Critical patent/EP1705957A1/fr
Application granted granted Critical
Publication of EP1705957B1 publication Critical patent/EP1705957B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • H05B3/20—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater
    • H05B3/34—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater flexible, e.g. heating nets or webs
    • H05B3/342—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater flexible, e.g. heating nets or webs heaters used in textiles
    • 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
    • H05B3/40—Heating elements having the shape of rods or tubes
    • H05B3/54—Heating elements having the shape of rods or tubes flexible
    • H05B3/56—Heating cables
    • 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
    • H05B2203/00—Aspects relating to Ohmic resistive heating covered by group H05B3/00
    • H05B2203/017—Manufacturing methods or apparatus for heaters
    • 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
    • H05B2203/00—Aspects relating to Ohmic resistive heating covered by group H05B3/00
    • H05B2203/029—Heaters specially adapted for seat warmers
    • 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
    • H05B2203/00—Aspects relating to Ohmic resistive heating covered by group H05B3/00
    • H05B2203/033—Heater including particular mechanical reinforcing means

Definitions

  • the invention relates to an electrical heating conductor, in particular for a seat heating, according to the preamble of patent claim 1,
  • a known electrical heating conductor comprises an inner strand of glass fiber, around which a resistance wire is wound with a specific resistance temperature coefficient. This arrangement is covered by an insulating layer of silicone. By means of this construction, an improvement of the temperature increase and a lower energy consumption should be achieved.
  • an electrical heating conductor which comprises an inner strand of three twisted filament yarns of stainless steel fibers.
  • an outer strand which is formed by a core and an outer layer, which consists of copper.
  • the outer layer is in electrical contact with the inner strand and has a lower resistivity than the stainless steel fibers.
  • the US 2005/0040158 A1 describes a heating conductor with a polyamide inner strand around which a metallic conductor with a plurality of conductor strands is wound.
  • the invention has for its object to provide a structurally simple means an electrical heating conductor with high reliability.
  • the inner strand of the heating element By the inner strand of the heating element according to the invention a high mechanical stability is ensured.
  • the outer strand ensures good electrical conductivity.
  • the only slightly conductive inner strand can maintain at least a limited functionality of the heating element in case of failure of the outer strand.
  • the occurrence of sparks at a possibly occurring breakage is excluded. Due to the insulation in sections, both the temperature distribution can be controlled and wear on particularly stressed areas can be prevented.
  • the inner strand is preferably made of stainless steel and the outer strand of copper.
  • the inner strand and / or the outer strand may be formed from one or more filaments. If they are formed from a plurality of filaments, it is preferable to isolate them at least in sections against each other.
  • the individual insulation of the filaments against each other increases the safety against sparking, since the electric currents do not have to force punctually by a narrowing at a breaking point, but the remaining conductor filaments are uniformly applied over their entire length and with a lower current.
  • the insulation can be formed by a lacquer, in particular a polyurethane lacquer, or by a lacquer layer.
  • a sufficient electrical connection between the inner strand and the outer strand is made possible if they are in contact with each other at least at their ends.
  • FIG. 1 schematically shows an electrical heating conductor according to the invention.
  • the heating conductor 10 comprises an inner strand 12, which consists of a plurality of individual fibers 13 made of stainless steel.
  • the outer strands 14, 16 are spirally wound in opposite directions.
  • the outer strands 14, 16 each consist of copper filaments which are coated with a lacquer layer (ICU wire filaments).
  • the outer strands 14, 16 are loosely wound around the inner strand 12, so that the individual filaments of the outer strands 14, 16 can move slightly around the inner strand 12.
  • the ends of the inner strand 12 and the outer strands 14, 16 are contacted with each other (not shown). Since the outer strands 14, 16 are formed of copper, they have a much higher electrical conductivity, as the stainless steel formed inner strand 12.
  • the inner strand 12 however, has a much higher tensile strength and bending fatigue strength than the outer strands 14, 16.
  • the inner strand 12 can thus absorb higher forces, while the outer strands 14, 16 are responsible for the heating effect.
  • the heating conductor 10 therefore has overall high fatigue strength and is functional even if one or more outer strands 14, 16 break, since the flow of current through the poorly conductive inner strands 12 can be maintained.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Resistance Heating (AREA)

Claims (7)

  1. Conducteur chauffant électrique comprenant au moins un faisceau intérieur (12) et au moins un faisceau extérieur (14, 16) électroconducteur, qui est enroulé autour du faisceau intérieur (12),
    - le faisceau intérieur (12) étant électroconducteur et ayant une conductivité spécifique plus faible que le faisceau extérieur (14, 16), et
    - le faisceau intérieur (12) étant formé d'un matériau ayant une résistance à la traction plus élevée et/ou une résistance à la flexion alternée plus élevée que le matériau formant le faisceau extérieur (14, 16),
    caractérisé en ce que le faisceau intérieur (12) est isolé par rapport au faisceau extérieur (14, 16) au moins par tronçons.
  2. Conducteur chauffant selon la revendication 1, caractérisé en ce que le faisceau intérieur (12) est formé d'acier, de préférence d'acier inoxydable, et le faisceau extérieur (14, 16) est formé de cuivre.
  3. Conducteur chauffant selon l'une des revendications 1 ou 2, caractérisé en ce que le faisceau intérieur (12) et/ou le faisceau extérieur (14, 16) est formé d'un filament.
  4. Conducteur chauffant selon l'une des revendications 1 ou 2, caractérisé en ce que le faisceau intérieur (12) et/ou le faisceau extérieur (14, 16) est formé de plusieurs filaments.
  5. Conducteur chauffant selon la revendication 4, caractérisé en ce que les différents filaments du faisceau intérieur (12) et/ou du faisceau extérieur (14, 16) sont isolés les uns par rapport aux autres au moins par tronçons.
  6. Conducteur chauffant selon la revendication 5, caractérisé en ce que l'isolation est formée d'un vernis, en particulier d'un vernis polyuréthane, ou d'une couche d'oxyde.
  7. Conducteur chauffant selon l'une des revendications précédentes, caractérisé en ce que le faisceau intérieur (12) et le faisceau extérieur (14, 16) sont en contact l'un avec l'autre au moins au niveau de leurs extrémités.
EP20050006168 2005-03-21 2005-03-21 Conducteur chauffant électrique Not-in-force EP1705957B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP20050006168 EP1705957B1 (fr) 2005-03-21 2005-03-21 Conducteur chauffant électrique

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP20050006168 EP1705957B1 (fr) 2005-03-21 2005-03-21 Conducteur chauffant électrique

Publications (2)

Publication Number Publication Date
EP1705957A1 EP1705957A1 (fr) 2006-09-27
EP1705957B1 true EP1705957B1 (fr) 2011-08-10

Family

ID=34934410

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20050006168 Not-in-force EP1705957B1 (fr) 2005-03-21 2005-03-21 Conducteur chauffant électrique

Country Status (1)

Country Link
EP (1) EP1705957B1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020069687A1 (fr) 2018-10-02 2020-04-09 I.G. Bauerhin Gmbh Élément chauffant plat réduisant les champs magnétiques pour un véhicule à moteur

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2797383A1 (fr) 2013-04-25 2014-10-29 NV Bekaert SA Câble chauffant
DE102018117942B4 (de) * 2018-07-25 2020-02-06 Leoni Kabel Gmbh Hochleistungs-Heizkabel

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000077172A (ja) 1998-08-28 2000-03-14 Nissei Denki Kk 高温度係数ヒータ
DE10206336B4 (de) 2002-02-14 2004-10-07 Bauerhin, I.G. Elektrisches Heizelement für Sitzheizungen und Lenkradheizungen
EP1362940A1 (fr) 2002-05-13 2003-11-19 N.V. Bekaert S.A. Fil conducteur d'électricité comprenant des fibres metalliques
WO2004017680A1 (fr) 2002-08-08 2004-02-26 W.E.T. Automotive Systems Ag Conducteur chauffant pourvu d'une gaine

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020069687A1 (fr) 2018-10-02 2020-04-09 I.G. Bauerhin Gmbh Élément chauffant plat réduisant les champs magnétiques pour un véhicule à moteur

Also Published As

Publication number Publication date
EP1705957A1 (fr) 2006-09-27

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