EP0262243A1 - PTC-heating resistor - Google Patents

PTC-heating resistor Download PDF

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Publication number
EP0262243A1
EP0262243A1 EP86113472A EP86113472A EP0262243A1 EP 0262243 A1 EP0262243 A1 EP 0262243A1 EP 86113472 A EP86113472 A EP 86113472A EP 86113472 A EP86113472 A EP 86113472A EP 0262243 A1 EP0262243 A1 EP 0262243A1
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EP
European Patent Office
Prior art keywords
heating element
ptc
profile body
ptc heating
radiator according
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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
EP86113472A
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German (de)
French (fr)
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EP0262243B1 (en
Inventor
Franz Bohlender
Norbert Buchlaub
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DBK David and Baader GmbH
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DBK David and Baader GmbH
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Priority to DE8686113472T priority Critical patent/DE3677603D1/en
Priority to EP86113472A priority patent/EP0262243B1/en
Priority to US07/103,055 priority patent/US4814584A/en
Priority to JP62249046A priority patent/JPS63164193A/en
Publication of EP0262243A1 publication Critical patent/EP0262243A1/en
Application granted granted Critical
Publication of EP0262243B1 publication Critical patent/EP0262243B1/en
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    • 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 current to the heating elements.
  • 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 a single 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 assembled 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 support 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 to receive the PTC resistance elements 2 and are adapted accordingly 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 at 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-OS 30 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 conductivity. It is therefore made 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 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, 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 coordinated 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 allows 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.

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  • Resistance Heating (AREA)

Abstract

Es wird ein Kaltleiter-PTC-Heizkörper angegeben, der insbesondere für die Beheizung von rohrförmigen Wärmesenken bestimmt ist. Er besteht aus einem Trägerkörper (1) mit einem dem zu beheizenden Gegenstand in der Form angepaßten Kanal (11) zur Anlage an den zu beheizenden Gegenstand und einer Auflagefläche für ein PTC-Heizelement. Zur Ableitung der Wärme von der dem zu beheizenden Gegenstand abgewandten Seite des PTC-Heizelements auf den zu beheizenden Gegenstand ist ein Wärmeleitbügel (8) vorgesehen, der einerseits auf dem PTC-Heizelement aufliegt, andererseits die Wärme in Richtung auf die andere Seite des PTC-Heizelements in die Nähe des zu beheizenden Gegenstandes leitet. Das PTC-Heizelement besteht aus Einzelteilen, die auf einfache Weise zusammengesetzt werden können, ohne daß es eines Vergießens bedarf.

Figure imgaf001
A PTC thermistor is specified, which is intended in particular for heating tubular heat sinks. It consists of a carrier body (1) with a channel (11) adapted in shape to the object to be heated for contact with the object to be heated and a support surface for a PTC heating element. In order to dissipate the heat from the side of the PTC heating element facing away from the object to be heated onto the object to be heated, a heat conducting bracket (8) is provided which on the one hand rests on the PTC heating element and on the other hand the heat towards the other side of the PTC Directs heating element in the vicinity of the object to be heated. The PTC heating element consists of individual parts that can be assembled in a simple manner without the need for casting.
Figure imgaf001

Description

Die Erfindung bezieht sich auf einen Kaltleiter-PTC-Heizkörper nach dem Oberbegriff des Anspruchs 1. Ein solcher Heizkörper ist aus der DE-OS 30 42 420 bekannt.The invention relates to a PTC thermistor heater according to the preamble of claim 1. Such a heater is known from DE-OS 30 42 420.

PTC-Heizkörper der vorgenannten Art enthalten in aller Regel mehrere flache Heizelemente, die, ggf. von einer Isolierstoffplatte mit darin vorhandenen Durchbrüchen für die Aufnahme der Heizelemente, auf gegenseitigem Abstand gehalten und zwischen zwei Elektrodenplatten eingeklemmt sind, die den Heizelementen Strom zuführen. Die in den PTC-Heizelementen entwickelte Wärme wird von ihren Flachseiten nach außen abgegeben, wozu eine gute Wärmeleitung zwischen dem PTC-Heizkörper und d er Wärmesenke als Verbraucher erforderlich ist.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 current to the heating elements. 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.

Zur Erzielung einer guten Wärmeabführung von einem PTC-Heizkörper ist es aus der DE-AS 20 02 254 bekannt, das die Wärme erzeugende PTC-Heizelement in einem Gehäuse mit Paraffin zu vergießen, so daß die Wärme allseitig von dem Heizelement abgeleitet wird. Auch aus der DE-OS 22 63 020 ist es bekannt, das PTC-Heizelement in einem es umgebenden Gehäuse mittels einer thermisch leitenden, elektrisch isolierenden Masse einzugießen.To achieve good heat dissipation from a PTC heating element, it is known from DE-AS 20 02 254 to cast the heat-generating PTC heating element in a housing with paraffin, so that the heat is dissipated from the heating element on all sides. From DE-OS 22 63 020 it is known to cast the PTC heating element in a surrounding housing by means of a thermally conductive, electrically insulating compound.

Aus der DE-PS 26 14 433 ist es bekannt, die Wärme von flachen PTC-Heizelementen, die innerhalb einer sie umgebenden Hülse angeordnet sind, mit Hilfe von federnden Blechen auf die Hülse zu übertragen, die jeweils einen auf den Heizelementen flach aufliegenden Schenkel und einen gebogenen, an der Hülsenwandung anliegenden Schenkel aufweisen. Auf diese Weise wird eine Wärmeableitung von beiden Seiten der Heizelemente in gleichem Umfang auf die Hülse erreicht.From DE-PS 26 14 433 it is known to transfer the heat from flat PTC heating elements, which are arranged within a sleeve surrounding them, with the aid of resilient sheets to the sleeve, each having a leg lying flat on the heating elements and have a curved leg abutting the sleeve wall. In this way, heat dissipation from both sides of the heating elements is achieved to the same extent on the sleeve.

Es gibt häufig Einsatzfälle, in denen Wärme einseitig auf einen Wärmeverbraucher zu übertragen ist. Ein solches Beispiel ist in der US-PS 40 91 267 dargestellt, in der ein elektrischer Wasserheizer beschrieben ist, bestehend aus einem Gefäß, das von außen mittels eines PTC-Heizkörpers beheizt wird. Dieser Heizkörper ist an einer Steinenwand des Behälters angebracht und enthält ein PTC-Heizelement, das innerhalb eines Gehäuses an der Gehäusewand anliegend angeordnet und in einer keramischen Filmmasse eingebettet ist. Aufgrund unterschiedlicher Wärmeableiteigenschaften zu beiden Seiten des Heizelements kann es bei dieser Anordnung dazu kommen, daß das Heizelement auf der einen Seite wärmer als auf der anderen Seite ist, daher seinen Widerstand entsprechend erhöht und keine optimale Wärmeentwicklung gewährleistet.There are often applications in which heat is to be transferred to a heat consumer on one side. Such an example is shown in US-PS 40 91 267, in which an electric water heater is described, consisting of a vessel that is heated from the outside by means of a PTC heater. This radiator is attached to a stone wall of the container and contains a PTC heating element which is arranged adjacent to the housing wall within a housing and is embedded in a ceramic film. Due to different heat dissipation properties on both sides of the heating element, this arrangement can result in the heating element being warmer on one side than on the other side, therefore increasing its resistance accordingly and not ensuring optimum heat development.

Es gibt weiterhin Einsatzfälle, bei denen Rohrleitungen zu erwärmen sind, beispielsweise die Rektifiziersäule in einer Absorptionskälteanlage, bei denen somit von einem in aller Regel flachen Heizelement Wärme auf eine Wärmesenke mit gewölbter Oberfläche zu übertragen ist. Ein solcher Anwendungsfall ist in bezug auf die Wärmeübertragung extrem ungünstig, weil Wärme von einem zweiseitig abstrahlenden Heizelement auf eine einseitig aufnehmende Wärmesenke übertragen werden muß. Die Gefahr, daß der Selbstbegrenzungseffekt des Heizelements vorzeitig eintritt und daher das Heizvermögen des PTC-Elements nicht optimal ausgenützt wird, ist daher in einem solchen Fall besonders groß.There are also applications in which pipes have to be heated, for example the rectification column in an absorption refrigeration system, in which heat is therefore to be transferred from a generally flat heating element to a heat sink with a curved surface. Such an application is extremely unfavorable with regard to heat transfer, because heat has to be transferred from a heating element radiating on both sides to a heat sink receiving on one side. The danger that the self-limiting effect of the heating element occurs prematurely and therefore the heating capacity of the PTC element is not optimally used is therefore particularly great in such a case.

Der Erfindung liegt die Aufgabe zugrunde, einen Kaltleiter-PTC-Heizkörper der eingangs genannten Art anzugeben, der zur Erwärmung einer rohrförmigen Wärmesenke in besonderer Weise geeignet ist.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.

Diese Aufgabe wird durch die kennzeichnenden Merkmale des Anspruchs 1 gelöst. Vorteilhafte Ausgestaltungen der Erfindung sind Gegenstand der Unteransprüche.This object is achieved by the characterizing features of claim 1. Advantageous embodiments of the invention are the subject of the dependent claims.

Durch die Erfindung wird ein PTC-Heizkörper geschaffen, bei welchem mit Hilfe der an dem Deckkörper angebrachten abgewinkelten Randstreifen die von dem Deckkörper aufgenommene Wärme in etwa dieselbe Richtung gelenkt wird, in die die dem Deckkörper abgewandte Seite des PTC-Heizkörper ihre Wärme abgibt. Es wird somit die beidseitig von dem PTC-Heizkörper abgegebene Wärme auf im wesentlichen eine einzige Seite abgeleitet, wo sie an eine Wärmesenke abgegeben werden kann, die in dem Kanal Aufnahme findet, der in dem Trägerprofilkörper ausgebildet ist. Dieser Kanal kann insbesondere halbkreisförmigen Querschnitt haben, so daß in ihm ein Rohr mit kreisförmigen Querschnitt Aufnahme finden kann.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 a single 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.

Es ist wesentlich für die Erfindung, daß die Einzelteile des Heizkörpers in sehr einfacher Weise zusammengefügt werden können, ohne daß es irgendwelcher Biegevorgänge oder eines Vergießens bedarf, die einzelnen Bauteile brauchen nur in geeigneter Weise übereinandergelegt zu werden und werden dann durch wenigstens einen Klemmbügel zusammengespannt und aneinander gesichert.It is essential for the invention that the individual parts of the radiator can be assembled 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.

Die Erfindung wird nachfolgend unter Bezugnahme auf in den Zeichnungen dargest ellte Ausführungsbeispiele näher erläutert. Es zeigt:

  • Fig. 1 einen Kaltleiter-PTC-Heizkörper gemäß einer ersten Ausführungsform der Erfindung;
  • Fig. 2 eine Explosionsdarstellung des Heizkörpers nach Fig. 1, und
  • Fig. 3 einen Trägerprofilkörper gemäß einer zweiten Ausführungsform der Erfindung.
The invention is explained in more detail below with reference to exemplary embodiments illustrated in the drawings. It shows:
  • 1 shows a PTC thermistor in accordance with a first embodiment of the invention;
  • Fig. 2 is an exploded view of the radiator according to Fig. 1, and
  • Fig. 3 shows a carrier profile body according to a second embodiment of the invention.

Gemäß den Fig. 1 und 2 besteht der PTC-Heizkörper aus einem Trägerprofilkörper 1, einem PTC-Heizkörper aus im vorliegenden Falle vier PTC-Widerstandselementen 2 (Fig. 2e), einer Positionsplatte 3, die die PTC-Widerstandselemente 2 in ihre Position sichert, und oberen und unteren Kontaktblechen 4 und 5 mit Anschlußleitern 6, einer Isolierfolie 7, einem Wärmeleitbügel 8 und einem Federklemmbügel 9.1 and 2, the PTC heater consists of a support 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.

Der Trägerprofilkörper 1 besteht aus einem gut wärmeleitfähigen Material, beispielsweise aus Aluminium oder Kupfer, und weist keine Auflagefläche 10 zur Aufnahme des PTC-Heizelements auf. Unterhalb der Auflagefläche 10 ist ein Kanal 11 ausgebildet, der im vorliegenden Falle etwa halbkreisförmigen Querschnitt hat. Am unteren Ende der Wände, die den Kanal 11 begrenzen, erstrecken sich nach oben Wände 12, die an ihren oberen und unteren Enden seitlich vorstehende Ränder 13 und 14 aufweisen. Zwischen diesen Wänden 12 und den Wänden, die den Kanal 11 begrenzen, ist jeweils eine Rille 15 ausgebildet.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. At the lower end of the walls which delimit the channel 11, 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.

Die Positionsplatte 3 weist vier Durchbrüche 16 auf, die zur Aufnahme der PTC-Widerstandselemente 2 bestimmt sind und entsprechend an deren Größen angepaßt sind. Die Positionsplatte 3 besteht aus einem isolierenden Material und weist seitlich an beiden Rändern Kerben 17 auf. Die Kontaktbleche 4 bzw. 5 weisen an ihren Längsrändern nach unten abgewinkelte Nasen 18 bzw. 19 und Ausschnitte 20 bzw. 21 auf, wobei die Nasen und die Ausschnitte an den Kontaktblechen in bezug aufeinander so ausgerichtet sind, daß nach dem sandwichartigen Zusammenfügen des aus den Kontaktblechen, der Positionsplatte und den PTC-Widerstandselementen bestehenden PTC-Heizelements und dem Umbiegen der Fahnen 18 und 19 beiden Kontaktbleche einander nicht berühren. Dieser Aufbau des PTC-Heizelements ist aus der DE-OS 30 42 420 bereits bekannt.The position plate 3 has four openings 16, which are intended to receive the PTC resistance elements 2 and are adapted accordingly 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 at 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-OS 30 42 420.

Das Heizelement ist von der Isolierfolie 7 umwickelt (siehe Fig. 1) und liegt in diesem Zustand auf der Auflagefäche 10 auf. Die Isolierfolie 7 isoliert das Heizelement elektrisch gegenüber dem Trägerprofilkörper 1, stellt aber einen guten Wärmeleitfähigen sicher. Sie besteht daher aus einem gut wärmeleitfähigen Material. Von oben ist das so isolierte Heizelement von dem Wärmeleitbügel 8 abgedeckt, der aus einem gut wärmeleitfähigen Material besteht und eine Deckplatte 22 aufweist, an die sich seitlich abgewinkelte Randstreifen 23 anschließen, die in die Rillen 15 im Trägerprofilkörper 1 eingreifen und an den benachbarten Wänden desselben dicht anliegen. Der Wärmeleitbügel 8 wird von dem Federklemmbügel 9 festgehalten, der an den beiderseits abstehenden Rändern 13 an den Wänden 12 des Trägerprofilkörpers 1 verrastet ist, wie Fig. 1 anschaulich zeigt. Der Federklemmbügel 9 ist in der Mitte vorzugsweise mit einer Ausbauchung 24 versehen, die elastisch auf den Wärmeleitbügel 8 drückt. Ggf. können mehrere solcher Federklemmbügel verwendet werden, wenn eine besonders hohe Druckkraft und eine damit verbundene Verbesserung des Wärmeübergangs auf den Trägerprofilkörper 1 erwünscht ist.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 conductivity. It is therefore made of a highly thermally conductive material. From above, 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 heat transfer to the carrier profile body 1 is desired.

Im Gebrauch wird die von dem Heizelement über die Kontaktbleche 4 und 5 und die Isolierfolie 7 abgegebene Wärme zum einen direkt von dem Trägerprofilkörper 1 aufgenommen und zum anderen von der Deckplatte 22 des Wärmeleitbügels 8 abgenommen, von der sie über die Randstreifen 23 in dem unteren Bereich des Trägerprofilkörpers 1 nahe dem Kanal 11 abgeleitet wird.In use, 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, 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.

Der Trägerprofilkörper 1 kann mit Hilfe eines vergleichbaren Federklemmbügels (nicht dargestellt), der an den Rändern 14 verspannt ist, an einem Rohr (nicht dargestellt) festgespannt werden, um an dieses Wärme abzugeben. Es sei betont, da ß der Querschnitt des Kanals 11 nicht halbkreisförmig zu sein braucht, sondern auch jede andere, an den Umriß des zu beheizenden Körpers angepaßte Gestalt haben kann.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. It should be emphasized that 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 zeigt eine modifizierte Ausführungsform eines Trägerprofilkörpers 1a, der zwei Auflageflächen 10ʹ und 10ʺ mit zugehörigen Wänden, Rillen usw. aufweist, die im Winkel zueinander angeordnet sind und den Kanal 11 zwischen sich einschließen. Auf diese Weise ist es möglich, an dem Trägerprofilkörper zwei PTC-Heizelemente anzubringen oder eine unterschiedliche Montage der PTC-Heizelements auszuführen.Fig. 3 shows a modified embodiment of a carrier profile body 1a, which has two contact surfaces 10ʹ and 10ʺ 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.

Es sei betont, daß auf die Verwendung einer Isolierfolie verzichtet werden kann, wenn der Trägerprofilkörper aus einem isolierenden Material, beispielsweise einem Keramikmaterial besteht. Alternative kann die Isolierung auch mittels Isolierplatten erfolgen, wie es an sich bereits aus dem Stand der Technik bekannt ist.It should be emphasized that the use of an insulating film can be dispensed with if the carrier profile body consists of an insulating material, for example a ceramic material. Alternatively, the insulation can also be carried out by means of insulating plates, as is already known per se from the prior art.

Für einem intensiven Wärmeübergang von der Oberseite des PTC-Heizelements in Richtung auf den Kanal 11 ist es wichtig, daß die Randstreifen 13 und die Rillen 15 in ihren Abmessungen so aufeinander abgestimmt sind, daß eine gute Passung erzielt wird, damit ausreichend große Wärmebrücken entstehen. Hierzu kann auch eine gewisse Elastizität des Materials des Trägerprofilkörpers beitragen, die ein geringfügiges Aufspreizen der Rillen 15 aufgrund entsprechender Passung von Randstreifen und Rillen gestattet.It is for an intense heat transfer from the top of the PTC heating element towards the channel 11 important that the edge strips 13 and the grooves 15 are coordinated 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 allows a slight spreading of the grooves 15 due to a corresponding fit of edge strips and grooves.

Es sei schließlich erwähnt, daß anstelle der seitlich vorstehenden Ränder 13 bzw. 14 an der Wand 12 auch Rillen ausgebildet sein können, in die jeweils ein oder mehrere passend gestaltete Federklemmbügel verrastbar sind. Finally, it should be mentioned that instead of the laterally projecting edges 13 and 14, grooves can also be formed on the wall 12, into each of which one or more suitably designed spring clamps can be locked.

Claims (8)

1. Kaltleiter-PTC-Heizkörper, bestehend aus einem länglichen Trägerprofilkörper aus wärmeleitfähigem Material mit wenigstens einer Auflagerfläche und wenigstens einem auf dieser in wärmeleitender Verbindung einseitig flach aufliegenden PTC-Heizelement aus einer oberen und einer unteren Elektrodenplatte und wenigstens einem dazwischen angeordneten PTC-Widerstandselement, einem Deckkörper mit einem auf der anderen Seite des PTC-Heizelements flach aufliegenden Flächenabschnitt und einer Spannein richtung zum gegenseitigen Verspannen von Trägerprofilkörper und Deckkörper, dadurch gekennzeichnet, daß der Trägerprofilkörper (1) auf seiner dem PTC-Heizelement (2, 3, 4, 5) abgewandten Seite einen Kanal (11) aufweist, der einen Querschnitt hat, der auf der dem PTC-Heizelement abgewandten Seite offen ist, daß der Trägerprofilkörper (1) beiderseits der Auflagefläche (10) jeweils senkrecht zu dieser eine längslaufende Rille (15) aufweist, der Deckkörper (8) beiderseits seines auf dem PTC-Heizelement aufliegenden Flächenabschnitts (22) mit von diesem abgewinkelten Randstreifen (23) versehen ist, die jeweils von den Rillen (15) in dem Trägerprofilkörper (1) engsitzend aufgenommen sind, und daß die Spanneinrichtung aus wenigstens einem Überwurf-Federklemmbügel (9) etwa U-förmigen Querschnitts besteht, dessen Mittelschenkel auf den Deckkörper (8) drückt und dessen Außenschenkel an dem Trägerprofilkörper (1) verspannt sind.1. PTC thermistor, consisting of an elongated support profile body made of thermally conductive material with at least one bearing surface and at least one PTC heating element lying flat on it on one side in a thermally conductive connection, consisting of an upper and a lower electrode plate and at least one PTC resistance element arranged between them. a cover body with a surface section lying flat on the other side of the PTC heating element and a clamp Direction for mutual bracing of the carrier profile body and cover body, characterized in that the carrier profile body (1) on its side facing away from the PTC heating element (2, 3, 4, 5) has a channel (11) which has a cross section on the it is open to the side facing away from the PTC heating element that the support profile body (1) has a longitudinal groove (15) on both sides of the support surface (10) perpendicular to it, the cover body (8) on both sides of its surface section (22) resting on the PTC heating element is provided with this angled edge strip (23), each of which is received by the grooves (15) in the carrier profile body (1), and that the tensioning device consists of at least one union spring clip (9) of approximately U-shaped cross section, the Middle leg presses on the cover body (8) and the outer legs are braced on the support profile body (1). 2. Heizkörper nach Anspruch 1, dadurch gekennzeichnet, daß der Mittelschenkel des Federklemmbügels (9) gegen den Deckkörper (8) ausgebaucht (24) ist.2. Radiator according to claim 1, characterized in that the middle leg of the spring clip (9) against the cover body (8) is bulged (24). 3. Heizkörper nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß der Trägerprofilkörper (1) beiderseits einen seitlich vorstehenden, längslaufenden Rand (13) aufweist, an dem der Federklemmbügel (9) verrastet ist.3. Radiator according to claim 1 or 2, characterized in that the support profile body (1) has on both sides a laterally projecting, longitudinal edge (13) on which the spring clip (9) is locked. 4. Heizkörper nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß der Trägerprofilkörper (1) im Bereich seitlich neben der Öffnung seines Kanals (11) beiderseits mit einer längslaufenden Rille oder einem seitlich vorstehenden Rand (14) zur Verankerung eines Befestigungsbügels versehen ist.4. Radiator according to one of the preceding claims, characterized in that the carrier profile body (1) in the area laterally next to the opening of its channel (11) is provided on both sides with a longitudinal groove or a laterally projecting edge (14) for anchoring a mounting bracket. 5. Heizkörper nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß der Trägerprofilkörper (1a) zwei Auflageflächen (10ʹ, 10ʺ) aufweist, die im Winkel zueinander etwa dachförmig, den Kanal (11) zwischen sich aufnehmend, angeordnet sind.5. Radiator according to one of the preceding claims, characterized in that the support profile body (1a) has two contact surfaces (10ʹ, 10ʺ) which are arranged at an angle to each other approximately roof-shaped, the channel (11) between them, arranged. 6. Heizkörper nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß der Trägerprofilkörper (1) und der Deckkörper (8) aus einem Metall bestehen und das PTC-Heizelement von diesen durch eine Isolierung (7) aus gut wärmeleitfähigem, elektrisch isolierendem Material elektrisch isoliert ist.6. Radiator according to one of the preceding claims, characterized in that the carrier profile body (1) and the cover body (8) consist of a metal and the PTC heating element is electrically insulated therefrom by insulation (7) made of highly thermally conductive, electrically insulating material is. 7. Heizkörper nach Anspruch 6, dadurch gekennzeichnet, daß die Isolierung von einer um das PTC-Heizelement (2, 3, 4, 5) gewickelten Folie (7) gebildet ist.7. Radiator according to claim 6, characterized in that the insulation is formed by a around the PTC heating element (2, 3, 4, 5) wound film (7). 8. Heizkörper nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß der Kanal (11) einen etwa halbkreisförmigen Querschnitt aufweist.8. Radiator according to one of the preceding claims, characterized in that the channel (11) has an approximately semicircular cross section.
EP86113472A 1986-10-01 1986-10-01 Ptc-heating resistor Expired - Lifetime EP0262243B1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
DE8686113472T DE3677603D1 (en) 1986-10-01 1986-10-01 PTC PTC RADIATOR.
EP86113472A EP0262243B1 (en) 1986-10-01 1986-10-01 Ptc-heating resistor
US07/103,055 US4814584A (en) 1986-10-01 1987-09-30 Profiled PCT heater for heating a tubular member
JP62249046A JPS63164193A (en) 1986-10-01 1987-10-01 Ptc heater

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP86113472A EP0262243B1 (en) 1986-10-01 1986-10-01 Ptc-heating resistor

Publications (2)

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

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ID=8195462

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86113472A Expired - Lifetime EP0262243B1 (en) 1986-10-01 1986-10-01 Ptc-heating resistor

Country Status (4)

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

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FR2634090A1 (en) * 1988-07-07 1990-01-12 Diry Andre Device for heating up a flow of liquid, especially water or diesel fuel
GB2256352A (en) * 1991-05-28 1992-12-02 Yang Chiung Hsiang Fully clad ptc semiconductor heating means
EP1557601A1 (en) * 2004-01-23 2005-07-27 DBK David + Baader GmbH Heating clip for a fluid conduit
DE4404345B4 (en) * 1993-02-18 2006-05-24 Valeo Climatisation S.A. Electric Heizradiator, in particular for the passenger compartment of a motor vehicle
US8229289B2 (en) 2006-03-21 2012-07-24 Rittal Gmbh & Co. Kg Condensate discharge by means of condensate evaporation in a cooling device
WO2014009013A3 (en) * 2012-07-11 2014-03-06 Eberspächer Catem Gmbh & Co. Kg Heat generating element
WO2018145811A1 (en) * 2017-02-08 2018-08-16 Krallmann Kunststoffverarbeitung Gmbh Heating and/or cooling apparatus for a solid body or a fluid flow
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Cited By (18)

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Publication number Priority date Publication date Assignee Title
EP0333906A1 (en) * 1988-03-25 1989-09-27 David & Baader DBK Spezialfabrik elektrischer Apparate und Heizwiderstände GmbH PTC heating resistor
FR2634090A1 (en) * 1988-07-07 1990-01-12 Diry Andre Device for heating up a flow of liquid, especially water or diesel fuel
GB2256352A (en) * 1991-05-28 1992-12-02 Yang Chiung Hsiang Fully clad ptc semiconductor heating means
GB2256352B (en) * 1991-05-28 1994-11-09 Yang Chiung Hsiang Fully clad PTC semiconductor heating means
DE4404345B4 (en) * 1993-02-18 2006-05-24 Valeo Climatisation S.A. Electric Heizradiator, in particular for the passenger compartment of a motor vehicle
EP1557601A1 (en) * 2004-01-23 2005-07-27 DBK David + Baader GmbH Heating clip for a fluid conduit
US8229289B2 (en) 2006-03-21 2012-07-24 Rittal Gmbh & Co. Kg Condensate discharge by means of condensate evaporation in a cooling device
CN104509205A (en) * 2012-07-11 2015-04-08 埃贝赫卡腾有限两合公司 Heat generating element
WO2014009013A3 (en) * 2012-07-11 2014-03-06 Eberspächer Catem Gmbh & Co. Kg Heat generating element
EP2873296B1 (en) 2012-07-11 2016-05-11 Eberspächer catem GmbH & Co. KG Heat generating element
WO2018145811A1 (en) * 2017-02-08 2018-08-16 Krallmann Kunststoffverarbeitung Gmbh Heating and/or cooling apparatus for a solid body or a fluid flow
IT201800004614A1 (en) * 2018-04-17 2019-10-17 ELECTRIC HEATER FOR ABSORPTION REFRIGERATOR
DE102018220333A1 (en) * 2018-11-27 2020-05-28 Eberspächer Catem Gmbh & Co. Kg Electric heater
CN111225459A (en) * 2018-11-27 2020-06-02 埃贝赫卡腾有限两合公司 Electric heating device
CN111225459B (en) * 2018-11-27 2022-05-24 埃贝赫卡腾有限两合公司 Electric heating device
DE102018220333B4 (en) 2018-11-27 2022-11-24 Eberspächer Catem Gmbh & Co. Kg Electric heater
EP3723448A1 (en) * 2019-04-10 2020-10-14 Eichenauer Heizelemente GmbH & Co. KG Heating device
DE102021112603A1 (en) 2021-05-14 2022-11-17 Stego-Holding Gmbh Heater and method of manufacturing a heater

Also Published As

Publication number Publication date
JPS63164193A (en) 1988-07-07
EP0262243B1 (en) 1991-02-20
DE3677603D1 (en) 1991-03-28
US4814584A (en) 1989-03-21

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