EP1705957A1 - Conducteur chauffant électrique - Google Patents

Conducteur chauffant électrique Download PDF

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Publication number
EP1705957A1
EP1705957A1 EP05006168A EP05006168A EP1705957A1 EP 1705957 A1 EP1705957 A1 EP 1705957A1 EP 05006168 A EP05006168 A EP 05006168A EP 05006168 A EP05006168 A EP 05006168A EP 1705957 A1 EP1705957 A1 EP 1705957A1
Authority
EP
European Patent Office
Prior art keywords
strand
heating conductor
inner strand
conductor according
outer strand
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
Application number
EP05006168A
Other languages
German (de)
English (en)
Other versions
EP1705957B1 (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
Expired - Fee Related 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 heater, with at least one inner strand and at least one electrically conductive outer strand, which is wound around the inner strand.
  • 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.
  • the structure of the heating element according to the invention is complicated because of the required external insulation.
  • the invention has for its object to provide a structurally simple means an electrical heating conductor with high reliability.
  • the inner strand is also electrically conductive, wherein it has a lower specific conductivity as the outer strand.
  • the inner strand is formed of a material which has a higher tensile strength and / or higher bending fatigue strength than the material from which the outer strand is formed.
  • 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.
  • the inner strand is preferably made of stainless steel and the outer strand of copper.
  • the inner strand is insulated in a preferred embodiment with respect to the outer strand at least in sections.
  • 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 an 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)
EP20050006168 2005-03-21 2005-03-21 Conducteur chauffant électrique Expired - Fee Related 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 true EP1705957A1 (fr) 2006-09-27
EP1705957B1 EP1705957B1 (fr) 2011-08-10

Family

ID=34934410

Family Applications (1)

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

Country Status (1)

Country Link
EP (1) EP1705957B1 (fr)

Cited By (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
WO2020020421A1 (fr) * 2018-07-25 2020-01-30 Leoni Kabel Gmbh Câble chauffant haute performance

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3861831A1 (fr) 2018-10-02 2021-08-11 I.G. Bauerhin GmbH Élément chauffant plat réduisant les champs magnétiques pour un véhicule à moteur

Citations (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
US20030150850A1 (en) 2002-02-14 2003-08-14 Jochen Michelmann Electrical heating element for heating units of seats and steering wheels
US20050040158A1 (en) 2002-08-08 2005-02-24 Jean-Pierre Bamy Bamy Heating conductor comprising a sheath
EP1507905B1 (fr) 2002-05-13 2006-08-02 N.V. Bekaert S.A. Fil conducteur d'electricite comprenant des fibres de metal

Patent Citations (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
US20030150850A1 (en) 2002-02-14 2003-08-14 Jochen Michelmann Electrical heating element for heating units of seats and steering wheels
EP1507905B1 (fr) 2002-05-13 2006-08-02 N.V. Bekaert S.A. Fil conducteur d'electricite comprenant des fibres de metal
US20050040158A1 (en) 2002-08-08 2005-02-24 Jean-Pierre Bamy Bamy Heating conductor comprising a sheath

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 2000, no. 06 22 September 2000 (2000-09-22) *

Cited By (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
WO2020020421A1 (fr) * 2018-07-25 2020-01-30 Leoni Kabel Gmbh Câble chauffant haute performance

Also Published As

Publication number Publication date
EP1705957B1 (fr) 2011-08-10

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