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 togetherInfo
- 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
Links
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—Heater elements characterised by the composition or nature of the materials or by the arrangement of the conductor
- H05B3/12—Heater 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—Heater 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
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)
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 |
Family
ID=25913319
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
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 |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE4223595C1 (en) |
Cited By (1)
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)
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 |
-
1992
- 1992-07-17 DE DE19924223595 patent/DE4223595C1/en not_active Expired - Fee Related
Patent Citations (1)
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)
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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