EP0609771B1 - Câble de chauffage électrique - Google Patents

Câble de chauffage électrique Download PDF

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Publication number
EP0609771B1
EP0609771B1 EP94101175A EP94101175A EP0609771B1 EP 0609771 B1 EP0609771 B1 EP 0609771B1 EP 94101175 A EP94101175 A EP 94101175A EP 94101175 A EP94101175 A EP 94101175A EP 0609771 B1 EP0609771 B1 EP 0609771B1
Authority
EP
European Patent Office
Prior art keywords
protective conductor
conductor
film
cable according
insulation
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.)
Revoked
Application number
EP94101175A
Other languages
German (de)
English (en)
Other versions
EP0609771A1 (fr
Inventor
Heinz Eilentropp
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.)
Eilentropp KG
Original Assignee
Eilentropp 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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6479328&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0609771(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Eilentropp KG filed Critical Eilentropp KG
Publication of EP0609771A1 publication Critical patent/EP0609771A1/fr
Application granted granted Critical
Publication of EP0609771B1 publication Critical patent/EP0609771B1/fr
Anticipated expiration legal-status Critical
Revoked 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
    • H05B3/40—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

Definitions

  • the present invention relates to an electrical heating cable with an electrical protective conductor covering the conductor insulation made of high-temperature-resistant materials in the form of stranded or braided individual wires.
  • Heating lines in a coaxial arrangement are known for the most varied fields of application, for example also for heating aggressive media (DE-A 28 50 722), in which the heating conductor is enclosed by a fluoropolymer as an insulating material.
  • This insulation is covered by a copper wire mesh, whereby the individual wires are additionally nickel-plated to avoid corrosion.
  • This braid made of copper wires is the electrical protective conductor of the line, which is provided within the line to avoid the risk of accidents, for example due to a short circuit in the electrically conductive part.
  • the protective conductor is covered by an outer plastic sheath, which is used to protect against aggressive media in the area.
  • B. is made of a fluoropolymer.
  • the object of the invention is to provide adequate protection of the conductor insulation, even with the greatest mechanical force from impact or crushing loads.
  • a band-shaped film made of mechanically high-strength plastics is wound underneath and / or above the protective conductor in one or more closed layers.
  • This film wrapping in one form or another leads to the fact that, in the event of an external impact or squeezing effect on the heating line, the film material is only stretched at the locally limited point, or even springs back when the stress has ended.
  • the present invention is of particular importance with regard to the test standard provided for such cables, according to which such heating cables are subjected to a local load with a 6 mm diameter mandrel under a load of 1500 N for 30 seconds. Due to the resilient properties of the film winding provided according to the invention, such a line satisfies the standard requirement without any problems; it is therefore also suitable for use in explosion-prone plants and systems with the specified safety factor.
  • the band-shaped film can be arranged below, above or on both sides of the protective conductor.
  • a particularly preferred embodiment of the invention is that of arranging the band-shaped film below the protective conductor; it thus offers reliable protection of the insulation after a break in the wires of the protective conductor against the winding on both sides it provides a particularly inexpensive solution to the problem on which the invention is based.
  • the band-shaped film is wound, that it consists of a high-strength plastic material and that the winding is a closed layer, so that forces acting in a point-like manner from the outside can be absorbed over the entire circumference of the heating line.
  • High-strength plastic materials are known, for the purposes of the invention, for. B. plastics based on polyimides or their derivatives have proven to be advantageous. However, such plastics based on polyether ketones and their derivatives are also suitable for achieving the object on which the invention is based.
  • the band-shaped film is coated on one or both sides.
  • This coating suitably also consists of a fluoropolymer.
  • the protective conductor itself can, as already stated, consist of stranded or braided individual wires; a so-called mixed braid of metallic wires and high-tensile plastic threads can be used advantageously as braiding.
  • the conductor 1 consists, for example, of a number of individual resistance heating wires.
  • the insulation is denoted by 2, it consists of a high-temperature-resistant material, for example based on a fluoropolymer, which is applied by extrusion, or, if the fluoropolymer is a polytetrafluoroethylene, consists of a film material which is applied in the unsintered state and is sintered in the wound state by an appropriate temperature treatment, so that the individual strip layers fuse to form a compact insulation.
  • a protective conductor 3 is provided, and finally an outer jacket 4, which is expedient, since such lines are also used in the area of influence of aggressive media, for example in the chemical industry, made from a suitable plastic material .
  • Flame-resistant properties are also often required, resistance to elevated temperatures and good mechanical properties.
  • Fluoropolymers which have been found in Extruded form are applied or in that the line is banded with tape-shaped films used from the same materials in one or more layers. These materials are of course only a selection of known materials suitable for the purposes of the invention.
  • a film winding 5 is provided above the insulation 2, which is applied in one or more closed layers and consists of a mechanically high-strength plastic, for example polyimide.
  • FIG. 2 shows a variant of the invention that differs from FIG. 1.
  • the heating conductor itself here designated 6, advantageously consists of individual resistance heating wires to increase the flexibility of the line.
  • the insulation 7 is made from high-temperature-resistant plastics, for example from fluorine-based ones, above which the winding 8 according to the invention is made from a closed position, that is to say overlapping tapes made from mechanically high-strength plastics, as are known, for example, under the trade name KAPTON®.
  • the protective conductor required for such heating cables is designated 9; Achievement of a wide, extensive coverage from a rope from a variety of individual copper wires, the z. B. are additionally coated with a metallic material to avoid corrosion.
  • high-tensile and temperature-resistant threads or strands 10 which, in the exemplary embodiment shown, run above and along the distance 12 below the wire layer of the protective conductor 9, which is concentric with the heating conductor 6, due to the braiding along the section 11.
  • this braiding of the high-tensile strands 10 for example of threads based on polyaramide, as are known under the trade name KEVLAR®, ensures that the individual wires of the protective conductor are securely fixed in the cable structure even under high bending stress, these strands are associated with The closed film layer underneath or also above further helps to keep external mechanical forces away from the insulation in the event of impact or crushing stresses on the line and thus also to ensure the operability of the heating line in such cases.

Landscapes

  • Insulated Conductors (AREA)
  • Resistance Heating (AREA)
  • Medicines Containing Plant Substances (AREA)
  • Massaging Devices (AREA)
  • Flanged Joints, Insulating Joints, And Other Joints (AREA)
  • Communication Cables (AREA)

Claims (7)

  1. Câble de chauffage électrique comportant un conducteur électrique de protection (3, 9) recouvrant une isolation de conducteur (2, 7) constituée de matériau résistant à de hautes températures, sous forme de fils individuels câblés ou tressés,
    caractérisé en ce que
    en dessous et ou au-dessus du conducteur de protection (3, 9) se trouve une pellicule (5, 8) constituée de rubans enroulés en une ou plusieurs couches fermées et constituées de matières plastiques à haute résistance mécanique.
  2. Câble de chauffage électrique selon la revendication 1,
    caractérisé en ce que
    la pellicule (5,8) de rubans, est faite de matières plastiques à haute résistance, à base de polyamide ou de dérivés de cette matière.
  3. Câble de chauffage électrique selon la revendication 1,
    caractérisé en ce que
    la pellicule (5, 8) de rubans est faite de matières plastiques à haute résistance à base de polyéthercétone ou de dérivés de cette matière.
  4. Câble de chauffage électrique selon l'une quelconque des revendications précédentes,
    caractérisé en ce que
    la pellicule (5, 8) de rubans porte un revêtement sur une face ou sur ses deux faces.
  5. Câble de chauffage électrique selon la revendication 4,
    caractérisé en ce que
    le revêtement est fait d'un fluopolymère pouvant être extrudé.
  6. Câble de chauffage électrique selon l'une quelconque des revendications 1 à 5, équipé d'un conducteur de protection (3, 9) sous forme de câblage périphérique
    caractérisé en ce que
    sur ce câblage est placé un enroulement hélicoïdal de maintien constitué d'une matière plastique à haute résistance.
  7. Câble de chauffage électrique selon l'une quelconque des revendications 1 à 6, équipé d'un conducteur de protection (3, 9),sous forme de câblage périphérique,
    caractérisé en ce que
    ce câble est fixé par des brins faits d'une matière plastique à haute résistance à la traction et tissés dans le conducteur de protection (3,9) selon des directions opposées.
EP94101175A 1993-02-01 1994-01-27 Câble de chauffage électrique Revoked EP0609771B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4302695A DE4302695A1 (de) 1993-02-01 1993-02-01 Elektrische Heizung
DE4302695 1993-02-01

Publications (2)

Publication Number Publication Date
EP0609771A1 EP0609771A1 (fr) 1994-08-10
EP0609771B1 true EP0609771B1 (fr) 1997-07-16

Family

ID=6479328

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94101175A Revoked EP0609771B1 (fr) 1993-02-01 1994-01-27 Câble de chauffage électrique

Country Status (6)

Country Link
US (1) US5521358A (fr)
EP (1) EP0609771B1 (fr)
AT (1) ATE155635T1 (fr)
DE (2) DE4302695A1 (fr)
FI (1) FI108329B (fr)
NO (1) NO940323L (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10325517A1 (de) * 2003-06-05 2004-12-23 Hew-Kabel/Cdt Gmbh & Co. Kg Elektrische Heizleitung oder Heizband
CN103415097A (zh) * 2013-08-12 2013-11-27 芜湖市恒鑫电缆有限责任公司 地下车库坡道化雪防滑专用发热电缆

Families Citing this family (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6300597B1 (en) 1997-01-21 2001-10-09 Myoung Jun Lee Electromagnetic field shielding electric heating pad
US6226450B1 (en) 1997-01-21 2001-05-01 Myoung Jun Lee Electric field shielding apparatus
US6153856A (en) * 1997-01-21 2000-11-28 Lee; Myoung Jun Low magnetic field emitting electric blanket
US5910266A (en) * 1997-05-28 1999-06-08 The B.F. Goodrich Company Helical electrical heater
US6002117A (en) * 1998-03-10 1999-12-14 Pak; Il Young Electric heating cord with non-heating core-conducting element and reduced EMF emissions
US6137084A (en) * 1998-10-07 2000-10-24 Thomas; Paul Douglas Heating element for heated windshield wiper
KR20000028327A (ko) * 1998-10-31 2000-05-25 양건호 전자파를 제거한 면상 발열체 및 그 제조방법
DE19851920A1 (de) * 1998-11-11 2000-05-18 Eilentropp Kg Elektrisches Heizkabel
DE19858137B4 (de) * 1998-12-16 2016-12-15 BSH Hausgeräte GmbH Heizung zum Erwärmen der Spülflüssigkeit in einer Geschirrspülmaschine
US6288372B1 (en) 1999-11-03 2001-09-11 Tyco Electronics Corporation Electric cable having braidless polymeric ground plane providing fault detection
DE10101378C2 (de) * 2000-06-07 2003-04-03 Dan Klein Einrichtung zur Ableitung von Strömen
DE10110185B9 (de) * 2001-03-02 2013-05-02 Eichenauer Heizelemente Gmbh & Co. Kg Beheizbares Dehnstoffelement
US7223948B2 (en) * 2002-11-15 2007-05-29 W.E.T. Automotive Systems Ag Covered conductor and heater formed therewith
JP4055125B2 (ja) * 2002-12-24 2008-03-05 日本光電工業株式会社 同軸ケーブルおよびそれを用いた伝送トランス
US20060218778A1 (en) * 2005-04-04 2006-10-05 Govindaraj Jawahar Flexible conducting thread
US7220947B2 (en) * 2005-09-30 2007-05-22 Global Heating Solutions, Inc. Pipe heater
DE102006025269A1 (de) * 2006-05-31 2007-12-06 Nexans Flexible elektrische Leitung
JP5874384B2 (ja) * 2011-01-07 2016-03-02 日立金属株式会社 ケーブル
US9706605B2 (en) * 2012-03-30 2017-07-11 Applied Materials, Inc. Substrate support with feedthrough structure
CN103411252A (zh) * 2013-08-07 2013-11-27 芜湖市恒鑫电缆有限责任公司 耐温发热网席
CN104185322A (zh) * 2014-09-09 2014-12-03 芜湖市恒鑫电缆有限责任公司 一种安全地热发热电缆

Citations (1)

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Publication number Priority date Publication date Assignee Title
US4617449A (en) * 1981-10-22 1986-10-14 Ricwil, Incorporated Heating device for utilizing the skin effect of alternating current

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FR1175784A (fr) * 1956-05-25 1959-04-01 Thomson Houston Comp Francaise Câble électrique chauffant à gaine extérieure non métallique
AT258340B (de) * 1963-05-31 1967-11-27 Benno Palatini Einrichtung zum elektrischen Beheizen flächenhafter Beläge
DE1540897A1 (de) * 1965-10-25 1970-01-02 Eugen Kloepper Waermetechnik G Heizkabel mit Schutzleiter
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DE2647056C3 (de) * 1976-10-19 1980-09-04 Felten & Guilleaume Carlswerk Ag, 5000 Koeln Biegsame, elektrische Heizleitung zur Bildung von Heizelementen, insbesondere Heizmatten
DE2850722A1 (de) * 1978-11-23 1980-05-29 Pampus Kg Elektrisches heizelement mit schutzleiter fuer aggressive baeder
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US4436569A (en) * 1981-09-21 1984-03-13 The United States Of America As Represented By The Secretary Of The Navy Method for forming a protective cover for aircraft having conical radomes
US4521485A (en) * 1982-09-15 1985-06-04 Raychem Corporation Electrical insulation
DE8435742U1 (de) * 1984-12-06 1985-04-04 Schmidt, Hans, 5165 Hürtgenwald Elektrische heizleitung
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US5374782A (en) * 1993-07-01 1994-12-20 Taylor; John A. Stranded annular conductors

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Publication number Priority date Publication date Assignee Title
US4617449A (en) * 1981-10-22 1986-10-14 Ricwil, Incorporated Heating device for utilizing the skin effect of alternating current

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FRANK A., BIEDERBICK K.: "Kunststoff-Kompendium", VOGEL, WUERZBURG *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10325517A1 (de) * 2003-06-05 2004-12-23 Hew-Kabel/Cdt Gmbh & Co. Kg Elektrische Heizleitung oder Heizband
US7220916B2 (en) 2003-06-05 2007-05-22 Hew-Kabel/Cdt Gmbh & Co: Kg Electric heating cable or tape having insulating sheaths that are arranged in a layered structure
CN103415097A (zh) * 2013-08-12 2013-11-27 芜湖市恒鑫电缆有限责任公司 地下车库坡道化雪防滑专用发热电缆

Also Published As

Publication number Publication date
DE4302695A1 (de) 1994-08-04
ATE155635T1 (de) 1997-08-15
DE59403333D1 (de) 1997-08-21
FI940470A (fi) 1994-08-02
FI940470A0 (fi) 1994-02-01
NO940323L (no) 1994-08-02
FI108329B (fi) 2001-12-31
US5521358A (en) 1996-05-28
EP0609771A1 (fr) 1994-08-10
NO940323D0 (no) 1994-01-31

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