DE4223595C1 - Prodn. of electrical self regulating heating unit - connecting PTC elements to heat dissipating elements on both sides by adhesive and making drillings in adhesion region before pressing elements together - Google Patents

Prodn. of electrical self regulating heating unit - connecting PTC elements to heat dissipating elements on both sides by adhesive and making drillings in adhesion region before pressing elements together

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Publication number
DE4223595C1
DE4223595C1 DE19924223595 DE4223595A DE4223595C1 DE 4223595 C1 DE4223595 C1 DE 4223595C1 DE 19924223595 DE19924223595 DE 19924223595 DE 4223595 A DE4223595 A DE 4223595A DE 4223595 C1 DE4223595 C1 DE 4223595C1
Authority
DE
Germany
Prior art keywords
elements
adhesive
drillings
sides
prodn
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 - Fee Related
Application number
DE19924223595
Other languages
German (de)
Inventor
Wolfgang 7200 Tuttlingen De Reinacher
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.)
Tuerk & Hillinger 78532 Tuttlingen De GmbH
Original Assignee
Tuerk & Hillinger 78532 Tuttlingen De 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
Priority claimed from DE19924210197 external-priority patent/DE4210197C1/en
Application filed by Tuerk & Hillinger 78532 Tuttlingen De GmbH filed Critical Tuerk & Hillinger 78532 Tuttlingen De GmbH
Priority to DE19924223595 priority Critical patent/DE4223595C1/en
Application granted granted Critical
Publication of DE4223595C1 publication Critical patent/DE4223595C1/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05BELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00Ohmic-resistance heating
    • H05B3/10Heater elements characterised by the composition or nature of the materials or by the arrangement of the conductor
    • H05B3/12Heater 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
    • H05B3/14Heater 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

Abstract

The drillings open out in the adhesion surfaces of the heat dissipation elements (6,7). The adhesion surfaces (15) are provided with longitudinal and transverse grooves (17,18), which connect with each other, in the drillings (12) opening out in the adhesion surfaces (15). The longitudinal and transverse grooves (17,18) end outside the outline of the PTC elements (5) located between the adhesion surfaces (15). ADVANTAGE - Excessive adhesive can be pressed away to give desired thin adhesive layer between parts being connected.

Description

Die Erfindung betrifft ein Verfahren zur Herstellung elektrischer, selbstregelnder Heizeinrichtungen gemäß dem Oberbegriff des Patentanspruchs 1, der einen Zusatz beschreibt zum Gegenstand des DE-P 42 10 197.The invention relates to a method for producing electrical, self-regulating heating devices according to the preamble of claim 1, which describes an addition on the subject of DE-P 42 10 197.

Die Praxis hat gezeigt, daß bei den, nach dem erfindungsgemäßen Verfahren hergestellten Heizeinrichtungen der elektrische Kontakt zwischen den, der Stromzuführung dienenden Wärmeableitelementen 6 und 7 und den PTC-Elementen 5 sichergestellt ist, daß aber bei sehr zähflüssigen Klebern 16 die Klebeschicht sich relativ dick ausbildet und so die Wärmeableitung von den PTC-Elementen 5 zu den Wärmeableitelementen 6 und 7 behindern kann. Dies ist darin begründet, daß sich ein solcher zähflüssiger Kleber über größere Strecken nur schlecht wegdrücken läßt und so der überschüssige Kleber nicht in gewünschter Vollständigkeit durch die Bohrungen 12 in den Wärmeableitelementen abfließt.Practice has shown that in the case of the heating devices produced by the method according to the invention, the electrical contact between the heat dissipation elements 6 and 7 serving for the current supply and the PTC elements 5 is ensured, but that with very viscous adhesives 16 the adhesive layer forms relatively thickly and thus can prevent heat dissipation from the PTC elements 5 to the heat dissipation elements 6 and 7 . This is due to the fact that such a viscous adhesive is difficult to push away over longer distances and the excess adhesive does not flow through the holes 12 in the heat dissipation elements to the desired degree of completeness.

Durch die DE-PS 31 51 109 ist es bekanntgeworden, die Kontaktflächen der Wärmeableitelemente und, oder der PTC-Elemente mit einem Riffelmuster zu versehen, mit dem Zweck, ein besseres Herausdrücken des überschüssigen Klebers aus dem Kontaktbereich zu ermöglichen. Doch auch bei dieser Ausführungsart ist, insbesondere bei sehr zähflüssigen Klebern, nicht immer gewährleistet, daß sich die Klebeschicht in der gewünschten geringen Dicke ausbildet.From DE-PS 31 51 109 it has become known, the contact surfaces the heat dissipation elements and, or the PTC elements with a corrugated pattern, with the purpose of a better pushing the excess glue out of the Allow contact area. But even with this version is, especially with very viscous adhesives, not always guaranteed that the adhesive layer in the the desired small thickness.

Aufgabe der vorliegenden Erfindung ist es, das Herstellungsverfahren so zu verbessern, daß beim Klebevorgang anfallender, überschüssiger Kleber weitgehend weggepreßt wird und so die erwünschte dünne Klebeschicht zwischen den zu verbindenden Teilen erreicht werden kann.The object of the present invention is the manufacturing process to improve so that during the gluing process excess adhesive is largely pressed away and so the  desired thin layer of adhesive between those to be joined Sharing can be achieved.

Diese Aufgabe wird durch die kennzeichnenden Merkmale des Patentanspruchs 1 gelöst.This object is achieved by the characterizing features of the patent claim 1 solved.

Durch die erfindungsgemäße Kombination von Rillen und den, in diese Rillen mündenden Bohrungen wird erreicht, daß der überschüssige Kleber schon bei relativ geringen Preßdrücken in voll ausreichendem Maß aus der Klebestelle weggedrückt wird, ein Vorteil, der sich besonders günstig bei dünnen und damit druckempfindlichen PTC-Elementen auswirkt.Due to the combination of grooves and in these holes opening holes is achieved that the excess glue even at relatively low pressures pushed out of the glue joint to a sufficient extent is an advantage that is particularly favorable with thin and thus affects pressure-sensitive PTC elements.

Der Gegenstand der Erfindung ist in einem Ausführungsbeispiel in der Zeichnung dargestellt und nachfolgend erläutert. Es zeigtThe object of the invention is in one embodiment shown in the drawing and below explained. It shows

Fig. 1 eine nach dem erfindungsgemäßen Verfahren zusammengesetzte Heizeinrichtung vor dem Klebevorgang, Fig. 1 is a composite heater according to the inventive method before the bonding process,

Fig. 2 die Heizeinrichtung gemäß Fig. 1 nach dem Klebevorgang, Fig. 2 shows the heating device of FIG. 1 after the splicing operation,

Fig. 3 einen Querschnitt in der Ebene III-III der Fig. 1 und Fig. 3 shows a cross section in the plane III-III of Fig. 1 and

Fig. 4 einen Ausschnitt aus einem der Wärmeableitelemente gemäß Fig. 1 in größerem Maßstab. Fig. 4 shows a detail from one of the Wärmeableitelemente of FIG. 1 in a larger scale.

Die dargestellte Heizeinrichtung wird zusammengesetzt aus einem PTC-Heizelement 5 und zwei beiderseits desselben angeordneten Wärmeableitelementen 6 und 7, wobei letztere gleichzeitig auch als Stromzuführungen zu den PTC-Elementen dienen.The heating device shown is composed of a PTC heating element 5 and two heat dissipation elements 6 and 7 arranged on both sides of the same, the latter simultaneously serving as current leads to the PTC elements.

Die Wärmeableitelemente 6 und 7 weisen eine Mehrzahl von Querrippen 10 auf, die Kanäle 11 für das durchströmende Medium bilden. The heat dissipation elements 6 and 7 have a plurality of transverse ribs 10 , which form channels 11 for the medium flowing through.

Des weiteren werden diese Elemente 6 und 7 mit einer Anzahl von Bohrungen 12 versehen, die von den Durchflußkanälen 11 zu den Klebeflächen 15 der Wärmeableitelemente 6 bzw. 7 führen. Außerdem werden die genannten Klebeflächen 15 mit einer Mehrzahl von Längs- und Querrillen 17 bzw. 18 versehen, deren Tiefe vorzugsweise im Bereich von 0,05 mm liegt.Furthermore, these elements are provided with a number of bores 12 6 and 7, which lead from the flow channels 11 to the bonding surfaces 15 of the Wärmeableitelemente 6 and 7 respectively. In addition, said adhesive surfaces 15 are provided with a plurality of longitudinal and transverse grooves 17 and 18 , the depth of which is preferably in the range of 0.05 mm.

Wie insbesondere die Fig. 3 zeigt, werden die Querrillen 18 so angeordnet, daß sie die Bohrungen 12 untereinander verbinden und an den beiden Außenkanten der Klebeflächen 15 enden. Die Längsrillen 17 werden vorzugsweise im Winkel zu den Querrillen 18 angeordnet und in ihrer Länge so bemessen, daß sie beiderseits über den Umriß des zwischen den Klebeflächen befindlichen PTC- Elements 5 hinausragen. Damit ist der ungehinderte Abfluß des weggepreßten Klebers 16 nicht nur durch die Bohrungen 12, sondern auch noch außerhalb der Klebeflächen möglich.As shown particularly in Fig. 3, the transverse grooves 18 are arranged so that they connect with one another end 12 and the bores at the two outer edges of the adhesive surfaces 15. The longitudinal grooves 17 are preferably arranged at an angle to the transverse grooves 18 and dimensioned in length so that they protrude on both sides beyond the outline of the PTC element 5 located between the adhesive surfaces. The unimpeded outflow of the pressed-away adhesive 16 is thus possible not only through the bores 12 , but also outside the adhesive surfaces.

Die genannten Rillen 17 und 18 können zweckmäßigerweise zusammen mit dem Stanzen der Bohrungen 12 in einem Arbeitsgang in die Klebeflächen geprägt werden oder es werden die Rillen beim Strangpressen der Wärmeableitelemente mit eingeformt und die Bohrungen nachträglich ausgestanzt.The above-mentioned grooves 17 and 18 can expediently be embossed into the adhesive surfaces together with the punching of the bores 12 , or the grooves are formed in the extrusion of the heat dissipation elements and the bores are subsequently punched out.

Ergänzend wird noch hinzugefügt, daß die Wärmeableitelemente in ihren Durchflußkanälen 11 bzw. die diese Kanäle 11 begrenzenden Rippen 10 zusätzlich mit Längsrippen 19 versehen werden können, um die wärmeabgebenden Oberflächen zu vergrößern.In addition, it is added that the heat dissipation elements in their flow channels 11 or the ribs 10 delimiting these channels 11 can additionally be provided with longitudinal ribs 19 in order to enlarge the heat-emitting surfaces.

Claims (2)

1. Verfahren zur Herstellung elektrischer, selbstregelnder Heizeinrichtungen bei denen die Verbindung zwischen den PTC-Elementen und den beiderseits derselben angeordneten Wärmeableitelementen durch Klebung erfolgt und bei dem gemäß DE-P 42 10 197 vor dem mit einer Pressung verbundenen Klebevorgang Bohrungen im Klebebereich angebracht werden, die in den Klebeflächen der Wärmeableitelemente münden und deren in die Klebefläche ragenden Ränder über diese Klebefläche überstehen, dadurch gekennzeichnet, daß die Klebeflächen (15) mit Längs- und Querrillen (17) bzw. (18) versehen werden, die die in die Klebeflächen (15) mündenden Bohrungen (12) miteinander verbinden. 1. A method for producing electrical, self-regulating heating devices in which the connection between the PTC elements and the heat dissipation elements arranged on both sides thereof is made by gluing and in which, according to DE-P 42 10 197, holes are made in the gluing area before the gluing process associated with pressing, which open into the adhesive surfaces of the heat dissipation elements and whose edges projecting into the adhesive surface protrude beyond this adhesive surface, characterized in that the adhesive surfaces ( 15 ) are provided with longitudinal and transverse grooves ( 17 ) or ( 18 ) which 15 ) connect opening bores ( 12 ). 2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß die Längs- und Querrillen (17, 18) außerhalb des Umrisses des zwischen den Klebeflächen 15 befindlichen PTC-Elementen (5) enden.2. The method according to claim 1, characterized in that the longitudinal and transverse grooves ( 17, 18 ) end outside the outline of the PTC elements ( 5 ) located between the adhesive surfaces 15 .
DE19924223595 1992-03-28 1992-07-17 Prodn. of electrical self regulating heating unit - connecting PTC elements to heat dissipating elements on both sides by adhesive and making drillings in adhesion region before pressing elements together Expired - Fee Related DE4223595C1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19924223595 DE4223595C1 (en) 1992-03-28 1992-07-17 Prodn. of electrical self regulating heating unit - connecting PTC elements to heat dissipating elements on both sides by adhesive and making drillings in adhesion region before pressing elements together

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19924210197 DE4210197C1 (en) 1992-03-28 1992-03-28 Self-regulating electric heating device using positive temp coefficient elements - has holes drilled in surface of each heat dissipation element before bonding to surface of positive temp coefficient element.
DE19924223595 DE4223595C1 (en) 1992-03-28 1992-07-17 Prodn. of electrical self regulating heating unit - connecting PTC elements to heat dissipating elements on both sides by adhesive and making drillings in adhesion region before pressing elements together

Publications (1)

Publication Number Publication Date
DE4223595C1 true DE4223595C1 (en) 1993-09-09

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DE19924223595 Expired - Fee Related DE4223595C1 (en) 1992-03-28 1992-07-17 Prodn. of electrical self regulating heating unit - connecting PTC elements to heat dissipating elements on both sides by adhesive and making drillings in adhesion region before pressing elements together

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DE (1) DE4223595C1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7560663B2 (en) 2005-08-06 2009-07-14 MicroHellix GmbH Electric heating module for heating air flow, in particular in automobiles

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3151109C2 (en) * 1980-12-26 1984-07-19 Matsushita Electric Industrial Co., Ltd., Kadoma, Osaka Process for making thermistor heaters with positive temperature coefficients

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3151109C2 (en) * 1980-12-26 1984-07-19 Matsushita Electric Industrial Co., Ltd., Kadoma, Osaka Process for making thermistor heaters with positive temperature coefficients

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7560663B2 (en) 2005-08-06 2009-07-14 MicroHellix GmbH Electric heating module for heating air flow, in particular in automobiles

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