EP0262243B1 - Résistance chauffante à coéfficient de température positif - Google Patents

Résistance chauffante à coéfficient de température positif Download PDF

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Publication number
EP0262243B1
EP0262243B1 EP86113472A EP86113472A EP0262243B1 EP 0262243 B1 EP0262243 B1 EP 0262243B1 EP 86113472 A EP86113472 A EP 86113472A EP 86113472 A EP86113472 A EP 86113472A EP 0262243 B1 EP0262243 B1 EP 0262243B1
Authority
EP
European Patent Office
Prior art keywords
ptc
heating element
support profile
profile body
section
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
EP86113472A
Other languages
German (de)
English (en)
Other versions
EP0262243A1 (fr
Inventor
Franz Bohlender
Norbert Buchlaub
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.)
DBK David and Baader GmbH
Original Assignee
DBK David and Baader GmbH
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 DBK David and Baader GmbH filed Critical DBK David and Baader GmbH
Priority to EP86113472A priority Critical patent/EP0262243B1/fr
Priority to DE8686113472T priority patent/DE3677603D1/de
Priority to US07/103,055 priority patent/US4814584A/en
Priority to JP62249046A priority patent/JPS63164193A/ja
Publication of EP0262243A1 publication Critical patent/EP0262243A1/fr
Application granted granted Critical
Publication of EP0262243B1 publication Critical patent/EP0262243B1/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
    • H05B3/10—Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor
    • H05B3/12—Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor characterised by the composition or nature of the conductive material
    • H05B3/14—Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor characterised by the composition or nature of the conductive material the material being non-metallic

Definitions

  • the invention relates to a PTC thermistor heater according to the preamble of claim 1.
  • a heater is known from DE-OS 30 42 420.
  • PTC radiators of the aforementioned type generally contain several flat heating elements which, if necessary by an insulating plate with openings for receiving the heating elements, are kept at a mutual distance and are clamped between two electrode plates which supply the heating elements with current.
  • the heat developed in the PTC heating elements is emitted from their flat sides to the outside, which requires good heat conduction between the PTC heating element and the heat sink as a consumer.
  • the invention has for its object to provide a PTC thermistor of the type mentioned, which is particularly suitable for heating a tubular heat sink.
  • the invention provides a PTC heating element in which, with the aid of the angled edge strips attached to the covering element, the heat absorbed by the covering element is directed in approximately the same direction in which the side of the PTC heating element facing away from the covering element emits its heat.
  • the heat emitted on both sides by the PTC heating element is thus dissipated to essentially one side, where it can be emitted to a heat sink which is accommodated in the channel which is formed in the carrier profile body.
  • This channel can in particular have a semicircular cross section, so that a tube with a circular cross section can be accommodated in it.
  • the individual parts of the radiator can be joined together in a very simple manner, without the need for any bending processes or casting, the individual components only need to be superimposed in a suitable manner and are then clamped together by at least one clamping bracket and secured to each other.
  • the PTC heater consists of a carrier profile body 1, a PTC heater from four PTC resistance elements 2 in the present case (FIG. 2e), a position plate 3 which secures the PTC resistance elements 2 in their position , and upper and lower contact plates 4 and 5 with connecting conductors 6, an insulating film 7, a heat-conducting bracket 8 and a spring clip bracket 9.
  • the carrier profile body 1 consists of a highly thermally conductive material, for example aluminum or copper, and has no bearing surface 10 for receiving the PTC heating element.
  • a channel 11 is formed below the support surface 10, which in the present case has an approximately semicircular cross section.
  • walls 12 extend upwards, which have laterally projecting edges 13 and 14 at their upper and lower ends.
  • a groove 15 is formed between each of these walls 12 and the walls that delimit the channel 11.
  • the position plate 3 has four openings 16, which are intended for receiving the PTC resistance elements 2 and are correspondingly adapted to their sizes.
  • the position plate 3 consists of an insulating material and has notches 17 on both sides of the edges.
  • the Contact plates 4 and 5 have on their longitudinal edges downwardly angled lugs 18 and 19 and cutouts 20 and 21, the lugs and the cutouts on the contact plates being aligned with respect to one another such that after the sandwiching of the contact plates , the position plate and the PTC resistance elements existing PTC heating element and the bending of the flags 18 and 19 do not touch the two contact plates.
  • This structure of the PTC heating element is already known from DE-0S 3D 42 420.
  • the heating element is wrapped by the insulating film 7 (see FIG. 1) and in this state lies on the support surface 10.
  • the insulating film 7 electrically insulates the heating element from the carrier profile body 1, but ensures good heat transfer. It therefore consists of a highly thermally conductive material.
  • the heating element thus insulated is covered by the heat-conducting bracket 8, which consists of a highly heat-conductive material and has a cover plate 22, to which are connected laterally angled edge strips 23 which engage in the grooves 15 in the carrier profile body 1 and on the adjacent walls thereof fit tightly.
  • the heat-conducting bracket 8 is held by the spring clip 9, which is locked on the edges 13 projecting on both sides on the walls 12 of the carrier profile body 1, as FIG. 1 clearly shows.
  • the spring clip 9 is preferably provided in the middle with a bulge 24 which presses elastically on the heat-conducting bracket 8. Possibly.
  • Several such spring clamps can be used if a particularly high compressive force and an associated improvement in the heat transfer to the carrier profile body 1 is desired.
  • the heat given off by the heating element via the contact plates 4 and 5 and the insulating film 7 is absorbed, on the one hand, directly by the carrier profile body 1 and, on the other hand, is removed by the cover plate 22 of the heat-conducting bracket 8, from which it passes over the edge strips 23 in the lower region of the carrier profile body 1 is derived near the channel 11.
  • the carrier profile body 1 can be clamped to a pipe (not shown) with the aid of a comparable spring clip (not shown), which is clamped at the edges 14, in order to give off heat thereon.
  • a comparable spring clip (not shown)
  • the cross section of the channel 11 need not be semicircular, but can also have any other shape adapted to the outline of the body to be heated.
  • Fig. 3 shows a modified embodiment of a carrier profile body 1a, which has two contact surfaces 10 ⁇ and 10 ⁇ with associated walls, grooves, etc., which are arranged at an angle to one another and enclose the channel 11 between them. In this way it is possible to attach two PTC heating elements to the carrier profile body or to carry out a different mounting of the PTC heating element.
  • an insulating film can be dispensed with if the carrier profile body consists of an insulating material, for example a ceramic material.
  • the insulation can also be carried out by means of insulating plates, as is already known per se from the prior art.
  • edge strips 13 and the grooves 15 are matched in their dimensions so that a good fit is achieved, so that sufficiently large thermal bridges arise.
  • a certain elasticity of the material of the carrier profile body can also contribute to this, which permits a slight spreading of the grooves 15 due to a corresponding fit of edge strips and grooves.
  • grooves can also be formed on the wall 12, into each of which one or more suitably designed spring clamps can be locked.

Landscapes

  • Resistance Heating (AREA)

Claims (8)

  1. Résistance chauffante à coefficient de température positif comprenant un support profilé allongé en matériau thermoconducteur présentant au moins une surface d'appui, et au moins un élément chauffant à coefficient de température positif qui repose à plat unilatéralement sur ladite surface avec laquelle il est en liaison thermoconductrice et est composé d'une plaque d'électrode supérieure et d'une plaque d'électrode inférieure et d'au moins un élément de résistance à coefficient de température positif disposé entre les deux plaques, un corps de recouvrement dont une surface repose à plat sur l'autre côté de l'élément chauffant à coefficient de température positif, et un dispositif de serrage destiné à serrer le support profilé et le corps de recouvrement l'un contre l'autre, caractérisée en ce que le support profilé (1) présente, sur son côté éloigné de l'élément chauffant à coefficient de température élevée (2, 3, 4, 5), un canal (11) qui possède une section transversale ouverte sur le côté éloigné de l'élément chauffant à coefficient de température positif, en ce que le support profilé (1) présente une rainure longitudinale (15) de part et d'autre de la surface d'appui (10) et perpendiculaire à ladite surface, le corps de recouvrement (8) est muni de part et d'autre de sa surface (22) reposant sur l'élément chauffant à coefficient de température positif de bandes marginales (23) qui sont coudées par rapport à ladite surface et sont logées étroitement dans les rainures (15) du support profilé (1) et en ce que le dispositif de serrage est composé d'au moins un étrier de serrage élastique (9) de section transversale à peu près en U dont la branche centrale exerce une pression sur le corps de recouvrement (8) et dont les branches extérieures sont tendues sur le support profilé (1).
  2. Résistance chauffante selon la revendication 1, caractérisée en ce que la branche centrale de l'étrier de serrage élastique (9) est bombée (24) en direction du corps de recouvrement (8).
  3. Résistance chauffante selon la revendication 1 ou 2, caractérisée en ce que le support profilé (1) présente de part et d'autre un bord longitudinal (13) faisant saillie latéralement sur lequel l'étrier de serrage élastique (9) est enclenché.
  4. Résistance chauffante selon l'une des revendications précédentes, caractérisée en ce que le support profilé (1) est muni, dans la zone située latéralement à côté de l'ouverture de son canal (11), de part et d'autre d'une rainure longitudinale ou d'un bord (14) faisant saillie latéralement pour fixer un étrier de fixation.
  5. Résistance chauffante selon l'une des revendications précédentes, caractérisée en ce que le support profilé (la) présente deux surfaces d'appui (10', 10") qui sont disposées selon un angle à peu près en forme de toît et renferment le canal (11).
  6. Résistance chauffante selon l'une des revendications précédentes, caractérisée en ce que le support profilé (1) et le corps de recouvrement (8) sont en métal et l'élément chauffant à coefficient de température positif est isolé électriquement de ces derniers par une isolation (7) constituée par un matériau isolant électrique conduisant bien la chaleur.
  7. Résistance chauffante selon la revendication 6, caractérisée en ce que l'isolation est formée par une feuille (7) enroulée autour de l'élément chauffant à coefficient de température positif (2, 3, 4, 5).
  8. Résistance chauffante selon l'une des revendications précédentes, caractérisée en ce que le canal (11) présente une section transversale à peu près semi-circulaire.
EP86113472A 1986-10-01 1986-10-01 Résistance chauffante à coéfficient de température positif Expired - Lifetime EP0262243B1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP86113472A EP0262243B1 (fr) 1986-10-01 1986-10-01 Résistance chauffante à coéfficient de température positif
DE8686113472T DE3677603D1 (de) 1986-10-01 1986-10-01 Kaltleiter-ptc-heizkoerper.
US07/103,055 US4814584A (en) 1986-10-01 1987-09-30 Profiled PCT heater for heating a tubular member
JP62249046A JPS63164193A (ja) 1986-10-01 1987-10-01 Ｐｔｃヒータ

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP86113472A EP0262243B1 (fr) 1986-10-01 1986-10-01 Résistance chauffante à coéfficient de température positif

Publications (2)

Publication Number Publication Date
EP0262243A1 EP0262243A1 (fr) 1988-04-06
EP0262243B1 true EP0262243B1 (fr) 1991-02-20

Family

ID=8195462

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86113472A Expired - Lifetime EP0262243B1 (fr) 1986-10-01 1986-10-01 Résistance chauffante à coéfficient de température positif

Country Status (4)

Country Link
US (1) US4814584A (fr)
EP (1) EP0262243B1 (fr)
JP (1) JPS63164193A (fr)
DE (1) DE3677603D1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102018212012A1 (de) * 2018-07-18 2020-01-23 Eberspächer Catem Gmbh & Co. Kg Wärmeerzeugendes Element und Verfahren zu dessen Herstellung
DE102018122436B4 (de) 2018-09-13 2024-08-22 Eichenauer Heizelemente Gmbh & Co. Kg Heizerbaugruppe und Heizergehäuse mit einer solchen Heizerbaugruppe

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JPH0734390B2 (ja) * 1987-09-11 1995-04-12 株式会社村田製作所 正特性サーミスタ装置
DE3885087D1 (de) * 1988-03-25 1993-11-25 David & Baader Dbk Spezfab Kaltleiter-PTC-Heizkörper.
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JP2532502Y2 (ja) * 1991-02-20 1997-04-16 株式会社村田製作所 発熱ユニット
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JP2698318B2 (ja) * 1993-08-20 1998-01-19 ティーディーケイ株式会社 ヒータ
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JPH09213458A (ja) * 1996-02-06 1997-08-15 Denso Corp ヒーターユニット
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DE10360159A1 (de) * 2003-12-20 2005-07-21 Eichenauer Heizelemente Gmbh & Co. Kg Profilrohr und Verfahren zum Verspannen von Funktionselementen in einem solchen
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DE102006013271B4 (de) 2006-03-21 2011-05-19 Rittal Gmbh & Co. Kg Kondensatverdunster
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US8057946B2 (en) * 2008-03-24 2011-11-15 GM Global Technology Operations LLC Integrated charge air heat exchanger
US7880581B2 (en) * 2008-09-15 2011-02-01 Chung-Tai Chang PTC thermistor
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TWM375766U (en) * 2009-10-07 2010-03-11 Top 1 Green Dev Co Ltd Fuel combustion device for vehicle
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DE102011054750B4 (de) * 2011-10-24 2014-08-21 Stego-Holding Gmbh Kühl- und Haltekörper für Heizelemente, Heizgerät und Verfahren zur Herstellung eines Kühl- und Haltekörpers
DE102011054752B4 (de) 2011-10-24 2014-09-04 Stego-Holding Gmbh Kühl- und Haltekörper für Heizelemente, Heizgerät und Verfahren zur Herstellung eines Kühl- und Haltekörpers
DE102012013770A1 (de) 2012-07-11 2014-01-16 Eberspächer Catem Gmbh & Co. Kg Wärme erzeugendes Element
DE102012109801B4 (de) * 2012-10-15 2015-02-05 Borgwarner Ludwigsburg Gmbh Elektrische Heizvorrichtung
KR102409471B1 (ko) * 2014-12-22 2022-06-16 가부시키가이샤 호리바 에스텍 유체 가열기
DE102016107043B4 (de) * 2016-04-15 2023-10-12 Borgwarner Ludwigsburg Gmbh Heizstab mit Nickel plattiertem Kontaktblech
DE102017001461A1 (de) * 2017-02-08 2018-08-09 Gebr. Krallmann Gmbh Heiz- und/oder Kühlvorrichtung für einen Festkörper oder einen Fluidstrom
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EP3503328B1 (fr) * 2017-12-21 2022-09-14 TE Connectivity Ireland Limited Ensemble de couverture de la ligne de distribution terrestre et procédé d'installation d'un recouvrement de ligne de distribution terrestre sur une ligne de distribution terrestre
IT201800004614A1 (it) * 2018-04-17 2019-10-17 Riscaldatore elettrico per frigorifero ad assorbimento
KR102055678B1 (ko) * 2018-10-11 2019-12-13 엘지전자 주식회사 정수기
DE102018220333B4 (de) * 2018-11-27 2022-11-24 Eberspächer Catem Gmbh & Co. Kg Elektrische Heizvorrichtung
DE102019109482A1 (de) * 2019-04-10 2020-10-15 Eichenauer Heizelemente Gmbh & Co. Kg Heizvorrichtung
DE102021112603A1 (de) 2021-05-14 2022-11-17 Stego-Holding Gmbh Heizeinrichtung und Verfahren zur Herstellung einer Heizeinrichtung
USD1040977S1 (en) 2021-11-04 2024-09-03 Stego-Holding Gmbh Convector

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Publication number Priority date Publication date Assignee Title
DE102018212012A1 (de) * 2018-07-18 2020-01-23 Eberspächer Catem Gmbh & Co. Kg Wärmeerzeugendes Element und Verfahren zu dessen Herstellung
DE102018122436B4 (de) 2018-09-13 2024-08-22 Eichenauer Heizelemente Gmbh & Co. Kg Heizerbaugruppe und Heizergehäuse mit einer solchen Heizerbaugruppe

Also Published As

Publication number Publication date
EP0262243A1 (fr) 1988-04-06
US4814584A (en) 1989-03-21
DE3677603D1 (de) 1991-03-28
JPS63164193A (ja) 1988-07-07

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