EP1545157A2 - Tube and process for compression-fitting of fuctional elements in such a tube - Google Patents

Tube and process for compression-fitting of fuctional elements in such a tube Download PDF

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Publication number
EP1545157A2
EP1545157A2 EP04029778A EP04029778A EP1545157A2 EP 1545157 A2 EP1545157 A2 EP 1545157A2 EP 04029778 A EP04029778 A EP 04029778A EP 04029778 A EP04029778 A EP 04029778A EP 1545157 A2 EP1545157 A2 EP 1545157A2
Authority
EP
European Patent Office
Prior art keywords
top wall
side walls
elements
concave top
pipe according
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.)
Granted
Application number
EP04029778A
Other languages
German (de)
French (fr)
Other versions
EP1545157B1 (en
EP1545157A3 (en
Inventor
Andreas Hamburger
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.)
Eichenauer Heizelemente GmbH and Co KG
BorgWarner Ludwigsburg GmbH
Original Assignee
Eichenauer Heizelemente GmbH and Co KG
Beru AG
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Publication date
Application filed by Eichenauer Heizelemente GmbH and Co KG, Beru AG filed Critical Eichenauer Heizelemente GmbH and Co KG
Publication of EP1545157A2 publication Critical patent/EP1545157A2/en
Publication of EP1545157A3 publication Critical patent/EP1545157A3/en
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Publication of EP1545157B1 publication Critical patent/EP1545157B1/en
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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
    • H05B3/42—Heating elements having the shape of rods or tubes non-flexible
    • H05B3/48—Heating elements having the shape of rods or tubes non-flexible heating conductor embedded in insulating material
    • H05B3/50—Heating elements having the shape of rods or tubes non-flexible heating conductor embedded in insulating material heating conductor arranged in metal tubes, the radiating surface having heat-conducting fins
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H9/00—Details
    • F24H9/18—Arrangement or mounting of grates or heating means
    • F24H9/1854—Arrangement or mounting of grates or heating means for air heaters
    • F24H9/1863—Arrangement or mounting of electric heating means
    • F24H9/1872—PTC
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01C—RESISTORS
    • H01C1/00—Details
    • H01C1/01—Mounting; Supporting
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01C—RESISTORS
    • H01C7/00—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material
    • H01C7/02—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material having positive temperature coefficient
    • 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
    • H05B2203/00—Aspects relating to Ohmic resistive heating covered by group H05B3/00
    • H05B2203/017—Manufacturing methods or apparatus for heaters
    • 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
    • H05B2203/00—Aspects relating to Ohmic resistive heating covered by group H05B3/00
    • H05B2203/02—Heaters using heating elements having a positive temperature coefficient

Definitions

  • the invention relates to a method for bracing Functional elements, in particular PTC heating elements, in a hollow receiving means, in particular a tube.
  • a pipe in particular for Recording of functional elements, such as PTC heating elements, as well Uses of such a pipe.
  • Electric heaters in which for generating a Heating power Resistance heating elements in the form of PTC elements are used today, are on many different Areas of technology, for example in the automotive industry, known.
  • the said heating devices for example used for heating vehicle interiors, as long as alternative heating methods using the engine cooling water as heating medium due to insufficient engine heating not yet working efficiently.
  • the electric heater can be carried out both separately as well as in a flowed through by the cooling water ribs / tube block be integrated by, for example, a Part of the cooling water-carrying pipes replaced by PTC pipes is.
  • regular individual PTC elements in hollow receptacles such as Profile tubes arranged to clamp the PTC elements by applying pressure to their top walls plastically be deformed.
  • the said heaters additionally to the heating tubes described above (receiving means and PTC elements) regularly heat release ribs in the form of fins or the like, which conducts heat well connected to the heating pipes.
  • the lamellar assembly must be installed in a downstream, take additional process step, so that in disadvantageously long production times and corresponding Cost increases result.
  • the invention is based on the object, a method and specify a profile tube with which the above enumerated Overcome disadvantages.
  • the object is achieved by a method for clamping of functional elements, in particular PTC heating elements, in a hollow receiving means, like a pipe, with two each other and flat sides of the functional elements opposite, at least partially concave top wall areas, wherein the functional elements by pressurizing the substantially perpendicular to the concave top wall areas extending side walls are braced.
  • the Task is also solved by a pipe, in particular for receiving functional elements, such as PTC heating elements, with two each other and flat sides of the Functional elements opposite, at least partially concave top wall areas as well as in essence perpendicular to the concave top wall areas extending further side walls, which reduce the light Distance between the retracted top wall areas with a compression pressure can be acted upon.
  • the side walls substantially in Direction of their surface normal pressure is applied, wherein Accordingly, the tube is preferably formed such that the side walls are essentially in the direction of their Surface normal are pressurizable.
  • pressurization essentially in the direction of Surface normal of the side walls takes place, in particular, that the forces exerting the pressure a predominant or main component parallel to the surface normal the side walls have, albeit the forces are not directed exactly parallel to the surface normal.
  • the bracing takes place the functional elements preferably such that by the pressurization a clear distance between the opposite top walls is reduced, wherein areas of the concave top wall areas to pinch approximate the functional elements to each other.
  • a distance between sections each at least one concave top wall area reduced and between these at least one Attachment part, such as a metal lamella or -Wellrippe permanently is trapped. It is possible in this way, that Fixing attachment parts to integrate in the pressing process.
  • the profile tube according to the invention In development of the profile tube according to the invention is provided that through cover walls of the retracted top wall areas before pressurization, an outward expanding free space with essentially one Isosceles trapezoid defined corresponding cross section is.
  • the free space is preferably for recording at least one complementary end region at least a lug, such as a metal lamella or -Well rib, trained.
  • the profile tube according to the invention is the attachment part after pressurization by the cover walls the concave top wall area substantially positive fit surrounded and held in this way clamped.
  • the neck parts can continue to be provided be that the top walls of the retracted top wall areas after pressure undercuts for receiving complementary corner regions of the attachment part define. Due to the low required Press forces can be further differentiated from the state of the Technique also processed longitudinally ribbed profiles be so far regularly in a complex manner two separate half-profiles were built.
  • Corresponding has the profile tube according to the invention in a preferred Training in at least one of the cover or side wall areas Rib elements, preferably a Extension component in the longitudinal direction of the profile tube exhibit.
  • the rib elements In addition, an extension essentially in cross section perpendicular to a local course of the deck and / or Sidewall areas or the top and / or side walls exhibit.
  • the profile tubes described above are generally suitable to provide a composite device a number of profile tubes and these connecting attachment parts, the neck portions through the profile tubes are held, and preferably take in a radiator an arrangement of heat-emitting fins use.
  • Fig. 1 shows an extruded, inventive Profile tube 1 with a substantially rectangular cross-section.
  • a flat PTC heating element 2 consisting of a PTC resistor 2.1, a contact track 2.2, a ceramic insulation 2.3 and arranged a contact frame 2.4.
  • the PTC heating element 2 in particular has flat sides 2a, 2b.
  • the structure of such PTC elements 2 is familiar to the person skilled in the art and per se not the subject of this invention.
  • the profile tube 1 has top wall areas 1.2, 1.3 on, compared to a strictly rectangular Cross section of the profile tube 1 retracted inward are, i. show a concave training.
  • Top wall areas 1.2, 1.3 of the profile tube 1 are defines outward expanding free space areas 1.4, of which in Fig. 1 by way of example only one dashed is shown.
  • the cover walls 1.5, 1.6 of the profile tube 1 have in the retracted, concave top wall areas 1.2, 1.3 an inner distance a, the larger is a corresponding dimension a 'between the flat sides 2a, 2b of the PTC element 2.
  • Profile tube 1 more side walls or side wall areas 1.7, 1.8, which are substantially perpendicular to the concave top wall areas 1.2, 1.3 extend and their clear distance b is greater than a corresponding dimension b 'of PTC element 2, where: (b-b')> (a-a ').
  • the inventive Profile tube 1 also along its outer Contour rib members 3, which are perpendicular to the plane of the drawing, i.e. extend in the profile longitudinal direction and thereby in cross-section substantially perpendicular to a local Extension direction of the top and side walls 1.5-1.8 aligned are.
  • FIGS. 2a, b show a further possible embodiment of the profile tube 1 according to the invention, here first (Fig. 2a) as a seamless drawn or welded tube with circular Cross-section, which, as shown in Fig. 2b, for training concave top wall sections 1.2, 1.3 (see Fig. 1) is to profile accordingly, for example, using a suitable roller system (not shown here).
  • Figs. 3a, b show in detail the already mentioned Pressing process by pressurization (arrows P) the side walls 1.7, 1.8 of the profile tube according to the invention 1.
  • This is according to the Fig. 3a, b substantially as already explained in FIG. 1, but has no rib elements on.
  • concave top wall areas 1.2, 1.3 formed Free spaces 1.4 are in the subject of FIG. 3a, b respectively attachment parts 4 in the form of flat metal fins used.
  • a length L of the projection 4.2 is dimensioned larger than a depth of insertion T the top wall areas 1.2, 1.3, leaving the attachment part 4 with its projection 4.2 in the free space area 1.4 can be introduced, the tip 4.2c respectively the side wall 1.5, 1.6 touched without the main body 4.1 of the attachment part 4 in turn already with the side walls 1.5, 1.6 of the profile tube 1 comes into contact.
  • FIG. 3b the arrangement of Fig. 3a is again after completed pressurization P shown.
  • the pressing pressure P first causes the pressurized Sidewalls 1.7, 1.8 reducing their spacing b (Fig. 1) to move towards each other.
  • FIG. 4a shows a side view of the invention Profile tube 1 according to FIGS. 3a, b with a plurality of each parallel aligned attachment parts. 4 in the form of metal fins.
  • Figs. 4b, c show sections by a profile tube-fin arrangement according to FIG. 4a.
  • the embodiments according to FIGS. 4b and 4c differ in that the attachment parts shown in FIG. 4c 4 in the outer region 4.2b of the projection 4.2 a in Substantially right-angled turn 4.2e, by which is a thermally conductive contact between the neck parts 4 and the profile tube 1 can be improved.
  • Figs. 5a, 5b is shown how a number of inventive Profile tubes 1 with inserted PTC elements 2 via an arrangement of attachment parts 4 to a assembled device, in the embodiment shown especially a radiator 5 is connected.
  • process engineering can the overall structure shown in Figs. 5a, b of the radiator 5 assembled in advance and by means of a suitable holding tool (not shown) still to be kept relaxed. This is followed by the Bracing the entire radiator 5 by pressurization the side walls 1.7, 1.8 of the profile tubes 1 in a single operation, as described above with reference to FIG. 1, 2b, 3a.
  • Figs. 6a, b show a further embodiment of the profile tube 1 according to the invention before or after the pressing (Pressurization P, Fig. 6a).
  • the concave training the cover walls 1.5, 1.6 results from an im Cross-section two-legged construction with legs 1.5b, 1.5c or 1.6b, 1.6c, which before the pressing an obtuse angle Include ⁇ .
  • the side walls 1.7, 1.8 and the Legs 1.5b, 1.6b are in pairs in a light obtuse angles to each other. This is through the side walls 1.7, 1.8 and the legs 1.5c, 1.6c zakken shame Projections 3 'formed (Fig. 6a).
  • the legs lie 1.5c, 1.6c with reduction of the angle ⁇ (FIG. 6a) to to about 90 ° (angle ⁇ '; Fig. 6b) to the side walls 1.7, 1.8, again with the clearances between the Side walls 1.7, 1.8 and between the walls 1.5, 1.6 or their legs 1.5b, 1.6b decrease, so that according to the invention Functional elements (not shown here) inside 1.1 of the profile tube 1 can be braced.
  • the projections 3 "of Figure 6b, resulting from the projections 3 ' of Fig. 6a, can be used as rib elements (see. Reference numeral 3 in Fig. 1) grasp and use.

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  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Physics & Mathematics (AREA)
  • Ceramic Engineering (AREA)
  • Electromagnetism (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Resistance Heating (AREA)
  • Load-Engaging Elements For Cranes (AREA)

Abstract

Method for clamping PTC heating elements etc. in hollow holder (1), such as tube, with two concave ceiling wall region (1.5,1.6) opposite to each other and to flat sides of PTC heating elements (2). PTC heating elements are clamped by pressure application to further side walls, orthogonally to ceiling wall regions. Preferably side walls are pressurised in direction of their surface normal. Pressure application typically reduces spacing of side walls in application direction, with regions of side walls providing clamping of PTC elements. Independent claims are included for tube holding PTC heating elements and its use and heater.

Description

Die Erfindung betrifft ein Verfahren zum Verspannen von Funktionselementen, insbesondere PTC-Heizelementen, in einem hohlen Aufnahmemittel, insbesondere einem Rohr. Weiterhin betrifft die Erfindung ein Rohr, insbesondere zur Aufnahme von Funktionselementen, wie PTC-Heizelementen, sowie Verwendungen eines derartigen Rohres.The invention relates to a method for bracing Functional elements, in particular PTC heating elements, in a hollow receiving means, in particular a tube. Farther The invention relates to a pipe, in particular for Recording of functional elements, such as PTC heating elements, as well Uses of such a pipe.

Elektrische Heizeinrichtungen, bei denen zum Erzeugen einer Heizleistung Widerstandsheizelemente in Form von PTC-Elementen zum Einsatz kommen, sind heutzutage auf vielfältigen Gebieten der Technik, beispielsweise im Automobilbau, bekannt. Dort werden die genannten Heizeinrichtungen beispielsweise zum Beheizen von Fahrzeuginnenräumen verwendet, solange alternative Heizverfahren unter Verwendung des Motorkühlwassers als Heizmedium aufgrund unzureichender Motorerwärmung noch nicht effizient arbeiten. Dabei kann die elektrische Heizeinrichtung sowohl separat ausgeführt sein als auch in einen vom Kühlwasser durchflossenen Rippen/Rohrblock integriert sein, indem beispielsweise ein Teil der kühlwasserdurchflossenen Rohre durch PTC-Rohre ersetzt ist. Bei derartigen Heizeinrichtungen werden regelmäßig einzelne PTC-Elemente in hohlen Aufnahmemitteln, wie Profilrohren, angeordnet, die zum Verspannen der PTC-Elemente durch Druckbeaufschlagung ihrer Deckwände plastisch verformt werden. Zu diesem Zweck wird nach dem Stand der Technik mittels eines geeigneten Werkzeugs von zwei einander gegenüberliegenden Deckwände ein Verpressdruck auf das hohle Aufnahmemittel ausgeübt, so dass entsprechend ein innerer Abstand der Deckwände abnimmt, bis diese mit den in dem Aufnahmemittel aufgenommenen PTC-Elementen in Anlage treten und diese festlegen. Es ist insbesondere als nachteilig anzusehen, dass nach einer Entlastung der eingesetzten Presse die verformten Deckwände des Aufnahmemittels aufgrund einer vorhandenen Teilelastizität zwangsläufig um ein gewisses Maß zurückfedern, so dass eine Haltekraft für die PTC-Elemente abnimmt. Weiterhin sind zum plastischen Verformen der Aufnahmemittel vergleichsweise hohe Press,kräfte in einer äquivalenten Größenordnung von 40 t erforderlich, was weiterhin einen komplexen Aufbau der einzusetzenden Presswerkzeuge bedingt.Electric heaters, in which for generating a Heating power Resistance heating elements in the form of PTC elements are used today, are on many different Areas of technology, for example in the automotive industry, known. There, the said heating devices, for example used for heating vehicle interiors, as long as alternative heating methods using the engine cooling water as heating medium due to insufficient engine heating not yet working efficiently. It can the electric heater be carried out both separately as well as in a flowed through by the cooling water ribs / tube block be integrated by, for example, a Part of the cooling water-carrying pipes replaced by PTC pipes is. With such heaters are regular individual PTC elements in hollow receptacles, such as Profile tubes arranged to clamp the PTC elements by applying pressure to their top walls plastically be deformed. To this end, according to the state of Technique by means of a suitable tool of two each other Opposite cover walls a pressing pressure on the hollow receiving means exercised, so that corresponding to an internal Distance of the cover walls decreases, until this with the in The recording means recorded PTC elements in Appendix kick and set this. It is especially as disadvantageous to see that after a discharge of the used Press the deformed top walls of the receiving means necessarily due to an existing partial elasticity to spring back to a certain extent, so that a holding force for the PTC elements decreases. Furthermore, the plastic Deforming the recording medium comparatively high pressure, forces required in an equivalent order of 40 t, which continues to be a complex structure of the used Pressing tools conditionally.

Darüber hinaus weisen die genannten Heizeinrichtungen zusätzlich zu den vorstehend beschriebenen Heizrohren (Aufnahmemittel und PTC-Elemente) regelmäßig Wärmeabgabe-Rippen in Form von Lamellen oder dergleichen auf, die gut wärmeleitend mit den Heizrohren verbunden sind. Bei den vorbekannten Heizeinrichtungen bzw. Verfahren zu deren Herstellung muss die Lamellenmontage in einem nachgeschalteten, zusätzlichen Prozessschritt erfolgen, so dass sich in nachteiliger Weise lange Fertigungszeiten und entsprechende Kostenerhöhungen ergeben.In addition, the said heaters additionally to the heating tubes described above (receiving means and PTC elements) regularly heat release ribs in the form of fins or the like, which conducts heat well connected to the heating pipes. In the previously known Heating devices or process for their preparation the lamellar assembly must be installed in a downstream, take additional process step, so that in disadvantageously long production times and corresponding Cost increases result.

Der Erfindung liegt die Aufgabe zugrunde, ein Verfahren und ein Profilrohr anzugeben, mit der sich die vorstehend aufgezählten Nachteile überwinden lassen.The invention is based on the object, a method and specify a profile tube with which the above enumerated Overcome disadvantages.

Die Aufgabe wird gelöst durch ein Verfahren zum Verspannen von Funktionselementen, insbesondere PTC-Heizelementen, in einem hohlen Aufnahmemittel, wie einem Rohr, mit zwei einander und Flachseiten der Funktionselemente gegenüberliegenden, zumindest teilweise konkaven Deckwand-Bereichen, wobei die Funktionselemente durch Druckbeaufschlagen der sich im Wesentlichen senkrecht zu den konkaven Deckwand-Bereichen erstreckenden Seitenwände verspannt werden. Die Aufgabe wird darüber hinaus gelöst durch ein Rohr, insbesondere zur Aufnahme von Funktionselementen, wie PTC-Heizelementen, mit zwei einander und Flachseiten der Funktionselemente gegenüberliegenden, zumindest teilweise konkaven Deckwand-Bereichen sowie mit sich im Wesentlichen senkrecht zu den konkaven Deckwand-Bereichen erstreckenden weiteren Seitenwänden, die zur Verringerung eines lichten Abstands zwischen den eingezogenen Deckwand-Bereichen mit einem Verpressdruck beaufschlagbar sind.The object is achieved by a method for clamping of functional elements, in particular PTC heating elements, in a hollow receiving means, like a pipe, with two each other and flat sides of the functional elements opposite, at least partially concave top wall areas, wherein the functional elements by pressurizing the substantially perpendicular to the concave top wall areas extending side walls are braced. The Task is also solved by a pipe, in particular for receiving functional elements, such as PTC heating elements, with two each other and flat sides of the Functional elements opposite, at least partially concave top wall areas as well as in essence perpendicular to the concave top wall areas extending further side walls, which reduce the light Distance between the retracted top wall areas with a compression pressure can be acted upon.

Die Druckbeaufschlagung bzw. das Einwirken einer Druckkraft erfolgt damit im wesentlichen senkrecht zu deren Flachseiten der Funktionselemente, genau senkrecht zu ihrer Flächennormale auf die weiteren Seitenwände - wenn diese eben sind - und genau senkrecht zu den Flachseiten der Funktionselemente stehen, was nicht sein muß, dann parallel zur Flächennormale der weiteren Seitenwände. Durch diese Druck- bzw. Krafteinwirkung werden die zunächst teilweise konkav vorgeformten Deckwände gegen das Funktionselement gedrückt, so daß dieses im Rohr verspannt wird. The pressurization or the action of a compressive force takes place thus substantially perpendicular to the flat sides the functional elements, exactly perpendicular to their surface normal on the other side walls - if they are even are - and exactly perpendicular to the flat sides of the functional elements stand, which does not have to be, then parallel to Surface normal of the other sidewalls. Through these pressure or force are the first partially concave preformed cover walls pressed against the functional element, so that this is braced in the tube.

Auf diese Weise ist erfindungsgemäß zum Verspannen der Aufnahmemittel (Rohre) nur eine geringe Presskraft erforderlich, da in Pressrichtung keine plastische Verformung erzielt werden muss. Entsprechend sind die zu verwendenden Werkzeuge einfach aufgebaut.In this way, according to the invention for clamping the receiving means (Tubes) only a small press force required, because no plastic deformation is achieved in the pressing direction must become. Accordingly, those to be used Tools simply built.

Gemäß einer bevorzugten Ausgestaltung des Verfahrens ist dabei vorgesehen, dass die Seitenwände im Wesentlichen in Richtung ihrer Flächennormale druckbeaufschlagt werden, wobei demgemäß das Rohr vorzugsweise derart ausgebildet ist, dass die Seitenwände im Wesentlichen in Richtung zu ihrer Flächennormale druckbeaufschlagbar sind. Die Aussage, dass die Druckbeaufschlagung im Wesentlichen in Richtung der Flächennormale der Seitenwände erfolgt, beinhaltet insbesondere, dass die die Druckbeaufschlagung ausübenden Kräfte eine überwiegende oder Haupt-Komponente parallel zur Flächennormale der Seitenwände haben, wenn auch die Kräfte nicht exakt parallel zur Flächennormale gerichtet sind.According to a preferred embodiment of the method provided that the side walls substantially in Direction of their surface normal pressure is applied, wherein Accordingly, the tube is preferably formed such that the side walls are essentially in the direction of their Surface normal are pressurizable. The statement that the pressurization essentially in the direction of Surface normal of the side walls takes place, in particular, that the forces exerting the pressure a predominant or main component parallel to the surface normal the side walls have, albeit the forces are not directed exactly parallel to the surface normal.

Im Zuge des erfindungsgemäßen Verfahrens erfolgt das Verspannen der Funktionselemente vorzugsweise dergestalt, dass durch die Druckbeaufschlagung ein lichter Abstand zwischen den gegenüberliegenden Deckwänden verringert wird, wobei sich Bereiche der konkaven Deckwand-Bereiche zum Einklemmen der Funktionselemente aneinander annähern. Im Zuge einer äußerst bevorzugten Weiterbildung ist vorgesehen, dass durch die Druckbeaufschlagung ein Abstand zwischen Teilabschnitten jeweils wenigstens eines konkaven Deckwand-Bereichs verringert und zwischen diesen wenigstens ein Ansatzteil, wie eine Metall-Lamelle oder -Wellrippe dauerhaft eingeklemmt wird. Es ist auf diese Weise möglich, das Befestigen von Ansatzteilen in den Verpressvorgang zu integrieren. In the course of the method according to the invention, the bracing takes place the functional elements preferably such that by the pressurization a clear distance between the opposite top walls is reduced, wherein areas of the concave top wall areas to pinch approximate the functional elements to each other. During a highly preferred development is provided that by the pressurization, a distance between sections each at least one concave top wall area reduced and between these at least one Attachment part, such as a metal lamella or -Wellrippe permanently is trapped. It is possible in this way, that Fixing attachment parts to integrate in the pressing process.

In Weiterbildung des erfindungsgemäßen Profilrohrs ist vorgesehen, dass durch Deckwände der eingezogenen Deckwand-Bereiche vor einer Druckbeaufschlagung ein sich nach außen erweiternder freier Raumbereich mit im Wesentlichen einem gleichschenkligen Trapez entsprechenden Querschnitt definiert ist. Der freie Raumbereich ist vorzugsweise zum Aufnehmen zumindest eines komplementären Endbereichs wenigstens eines Ansatzteils, wie einer Metall-Lamelle oder -Wellrippe, ausgebildet. In einer äußerst bevorzugten Weiterbildung des erfindungsgemäßen Profilrohrs ist das Ansatzteil nach erfolgter Druckbeaufschlagung durch die Deckwände des konkaven Deckwand-Bereichs im Wesentlichen formschlüssig umgeben und auf diese Weise klemmend gehalten. Somit ist eine unter Verwendung der erfindungsgemäßen Profilrohre herzustellende zusammengesetzte Vorrichtung, wie eine Heizeinrichtung, mit den bereits angesprochenen Wärmeübertragungs-Rippen im Zuge des Verspannens der PTC-Elemente in nur einem Verfahrensschritt herstellbar.In development of the profile tube according to the invention is provided that through cover walls of the retracted top wall areas before pressurization, an outward expanding free space with essentially one Isosceles trapezoid defined corresponding cross section is. The free space is preferably for recording at least one complementary end region at least a lug, such as a metal lamella or -Well rib, trained. In a highly preferred embodiment the profile tube according to the invention is the attachment part after pressurization by the cover walls the concave top wall area substantially positive fit surrounded and held in this way clamped. Thus, one is using the profile tubes according to the invention composite device to be manufactured, such as a heater, with the already mentioned heat transfer ribs in the course of tightening the PTC elements can be produced in only one process step.

Zum sicheren Halten der Ansatzteile kann weiterhin vorgesehen sein, dass die Deckwände der eingezogenen Deckwand-Bereiche nach erfolgter Druckbeaufschlagung Hinterschneidungen zum Aufnehmen komplementärer Eckbereiche des Ansatzteils definieren. Aufgrund der geringen erforderlichen Presskräfte können in weiterer Abgrenzung zum Stande der Technik auch in Längsrichtung verrippte Profile verarbeitet werden, die bislang regelmäßig in aufwändiger Weise aus zwei getrennten Halbprofilen aufgebaut wurden. Entsprechend weist das erfindungsgemäße Profilrohr in einer bevorzugten Weiterbildung in wenigstens einem der Deck- oder Seitenwand-Bereiche Rippenelemente auf, die vorzugsweise eine Erstreckungskomponente in Längsrichtung des Profilrohrs aufweisen. Zwecks optimaler Wärmeabgabe können die Rippenelemente zudem im Querschnitt eine Erstreckung im Wesentlichen senkrecht zu einem lokalen Verlauf der Deck- und/oder Seitenwand-Bereiche bzw. der Deck- und/oder Seitenwände aufweisen.For securely holding the neck parts can continue to be provided be that the top walls of the retracted top wall areas after pressure undercuts for receiving complementary corner regions of the attachment part define. Due to the low required Press forces can be further differentiated from the state of the Technique also processed longitudinally ribbed profiles be so far regularly in a complex manner two separate half-profiles were built. Corresponding has the profile tube according to the invention in a preferred Training in at least one of the cover or side wall areas Rib elements, preferably a Extension component in the longitudinal direction of the profile tube exhibit. For optimal heat dissipation, the rib elements In addition, an extension essentially in cross section perpendicular to a local course of the deck and / or Sidewall areas or the top and / or side walls exhibit.

Die vorstehend beschriebenen Profilrohre eignen sich allgemein zum Schaffen einer zusammengesetzten Vorrichtung aus einer Anzahl von Profilrohren und diese verbindenden Ansatzteilen, wobei die Ansatzteile durch die Profilrohre gehalten sind, und finden bevorzugt in einem Heizkörper mit einer Anordnung von Wärmeabgabe-Rippen Verwendung.The profile tubes described above are generally suitable to provide a composite device a number of profile tubes and these connecting attachment parts, the neck portions through the profile tubes are held, and preferably take in a radiator an arrangement of heat-emitting fins use.

Weitere Eigenschaften und Vorteile der Erfindung ergeben sich aus der nachfolgenden Beschreibung von Ausführungsbeispielen anhand der Zeichnungen. Es zeigen:

Fig. 1
einen Querschnitt durch ein erfindungsgemäßes Profilrohr mit eingebrachtem PTC-Heizelement vor dem Verpressen;
Fig. 2a
einen weiteren möglichen Querschnitt eines erfindungsgemäßen Profilrohrs;
Fig. 2b
eine weitere Querschnittsansicht des Profilrohrs gemäß Fig. 2a mit eingezogenen Deckwand-Bereichen und eingebrachtem PTC-Element;
Fig. 3a
ein erfindungsgemäßes Profilrohr mit eingebrachtem PTC-Element und Ansatzteilen vor dem Verpressen;
Fig. 3b
das Profilrohr der Fig. 3a nach erfolgtem Verpressen;
Fig. 4a
eine Seitenansicht des erfindungsgemäßen Profilrohrs gemäß der Fig. 3b;
Fig. 4b, c
Längsschnitte durch alternative Ausgestaltungen eines erfindungsgemäßen Profilrohrs gemäß der Fig. 3b;
Fig. 5a
einen Querschnitt durch einen unter Verwendung erfindungsgemäßer Profilrohre aufgebauten Heizkörper;
Fig. 5b
eine Seitenansicht des Heizkörpers der Fig. 5a; und
Fig. 6a,b
einen weiteren möglichen Querschnitt eines erfindungsgemäßen Profilrohrs vor bzw. nach dem Verpressen.
Further features and advantages of the invention will become apparent from the following description of exemplary embodiments with reference to the drawings. Show it:
Fig. 1
a cross section through an inventive profile tube with inserted PTC heating element before pressing;
Fig. 2a
a further possible cross section of a profile tube according to the invention;
Fig. 2b
a further cross-sectional view of the profile tube of Figure 2a with retracted top wall areas and incorporated PTC element.
Fig. 3a
an inventive profile tube with incorporated PTC element and attachment parts before compression;
Fig. 3b
the profile tube of Figure 3a after completion of pressing.
Fig. 4a
a side view of the profile tube according to the invention according to FIG. 3b;
Fig. 4b, c
Longitudinal sections through alternative embodiments of a profile tube according to the invention according to FIG. 3b;
Fig. 5a
a cross section through a constructed using profile tubes according to the invention radiator;
Fig. 5b
a side view of the radiator of Fig. 5a; and
Fig. 6a, b
a further possible cross section of a profile tube according to the invention before or after the pressing.

Die Erfindung wird nachfolgend anhand einer Anzahl von Ausführungsbeispielen beschrieben, die sich speziell in Form von auf Profilrohren für eine Verwendung in elektrischen Heizeinrichtungen beziehen. Es sei jedoch betont, dass das erfindungsgemäße Verfahren bzw. das erfindungsgemäße Profilrohr nicht auf derartige Anwendungen beschränkt sind, sondern sich generell überall dort einsetzen lassen, wo Funktionselemente im Innern eines hohlen Aufnahmemittels verspannt werden sollen.The invention will be described below with reference to a number of exemplary embodiments described specifically in shape from on profile tubes for use in electrical Refer to heaters. It should be stressed, however, that the inventive method and the profile tube according to the invention are not limited to such applications, but in general can be used wherever, where Functional elements inside a hollow receiving means should be tightened.

Die Fig. 1 zeigt ein stranggepresstes, erfindungsgemäßes Profilrohr 1 mit im Wesentlichen rechteckförmigem Querschnitt. Im Innern 1.1 des Profilrohrs 1 ist ein flaches PTC-Heizelement 2 bestehend aus einem PTC-Widerstand 2.1, einer Kontaktbahn 2.2, einer keramischen Isolierung 2.3 und einem Kontaktrahmen 2.4 angeordnet. Das PTC-Heizelement 2 besitzt insbesondere Flachseiten 2a, 2b. Der Aufbau derartiger PTC-Elemente 2 ist dem Fachmann geläufig und an sich nicht Gegenstand dieser Erfindung.Fig. 1 shows an extruded, inventive Profile tube 1 with a substantially rectangular cross-section. Inside 1.1 of the profile tube 1 is a flat PTC heating element 2 consisting of a PTC resistor 2.1, a contact track 2.2, a ceramic insulation 2.3 and arranged a contact frame 2.4. The PTC heating element 2 in particular has flat sides 2a, 2b. The structure of such PTC elements 2 is familiar to the person skilled in the art and per se not the subject of this invention.

Das erfindungsgemäße Profilrohr 1 weist Deckwand-Bereiche 1.2, 1.3 auf, die gegenüber einem streng rechteckförmigen Querschnitt des Profilrohrs 1 nach innen eingezogen sind, d.h. eine konkave Ausbildung zeigen. Durch die eingezogenen Deckwand-Bereiche 1.2, 1.3 des Profilrohrs 1 sind sich nach außen erweiternde freie Raumbereiche 1.4 definiert, von denen in der Fig. 1 exemplarisch nur einer gestrichelt dargestellt ist. Die Deckwände 1.5, 1.6 des Profilrohrs 1 weisen in den eingezogenen, konkaven Deckwand-Bereichen 1.2, 1.3 einen inneren Abstand a auf, der größer ist als eine entsprechende Abmessung a' zwischen den Flachseiten 2a, 2b des PTC-Elements 2. Weiterhin besitzt das Profilrohr 1 weitere Seitenwände bzw. Seitenwand-Bereiche 1.7, 1.8, die sich im Wesentlichen senkrecht zu den konkaven Deckwand-Bereichen 1.2, 1.3 erstrecken und deren lichter Abstand b größer ist als eine entsprechende Abmessung b' des PTC-Elements 2, wobei gilt: (b-b')>(a-a').The profile tube 1 according to the invention has top wall areas 1.2, 1.3 on, compared to a strictly rectangular Cross section of the profile tube 1 retracted inward are, i. show a concave training. By the retracted Top wall areas 1.2, 1.3 of the profile tube 1 are defines outward expanding free space areas 1.4, of which in Fig. 1 by way of example only one dashed is shown. The cover walls 1.5, 1.6 of the profile tube 1 have in the retracted, concave top wall areas 1.2, 1.3 an inner distance a, the larger is a corresponding dimension a 'between the flat sides 2a, 2b of the PTC element 2. Furthermore, has the Profile tube 1 more side walls or side wall areas 1.7, 1.8, which are substantially perpendicular to the concave top wall areas 1.2, 1.3 extend and their clear distance b is greater than a corresponding dimension b 'of PTC element 2, where: (b-b')> (a-a ').

Beim gezeigten Ausführungsbeispiel der Fig. 1 weist das erfindungsgemäße Profilrohr 1 außerdem entlang seiner äußeren Kontur Rippenelemente 3 auf, die sich senkrecht zur Zeichenebene, d.h. in Profillängsrichtung erstrecken und dabei im Querschnitt im Wesentlichen senkrecht zu einer lokalen Erstreckungsrichtung der Deck- und Seitenwände 1.5-1.8 ausgerichtet sind.In the illustrated embodiment of FIG. 1, the inventive Profile tube 1 also along its outer Contour rib members 3, which are perpendicular to the plane of the drawing, i.e. extend in the profile longitudinal direction and thereby in cross-section substantially perpendicular to a local Extension direction of the top and side walls 1.5-1.8 aligned are.

Das Verspannen des PTC-Elements 2 im Innern 1.1 des erfindungsgemäßen Profilrohrs 1 erfolgt durch seitlichen Druck (Pfeile P) auf die Seitenwände 1.7, 1.8. Dies wird nachfolgend anhand der Fig. 3a, b noch näher erläutert. The distortion of the PTC element 2 inside 1.1 of the invention Profile tube 1 is made by lateral pressure (Arrows P) on the side walls 1.7, 1.8. This will be below with reference to FIGS. 3a, b explained in more detail.

Die Fig. 2a, b zeigen eine weitere mögliche Ausgestaltung des erfindungsgemäßen Profilrohrs 1, hier zunächst (Fig. 2a) als nahtlos gezogenes oder geschweißtes Rohr mit kreisförmigem Querschnitt, das, wie in Fig. 2b gezeigt, zur Ausbildung konkaver Deckwand-Bereiche 1.2, 1.3 (vgl. Fig. 1) entsprechend zu profilieren ist, beispielsweise unter Verwendung eines geeigneten Walzensystems (hier nicht dargestellt).FIGS. 2a, b show a further possible embodiment of the profile tube 1 according to the invention, here first (Fig. 2a) as a seamless drawn or welded tube with circular Cross-section, which, as shown in Fig. 2b, for training concave top wall sections 1.2, 1.3 (see Fig. 1) is to profile accordingly, for example, using a suitable roller system (not shown here).

Die Fig. 3a, b zeigen detailliert den bereits angesprochenen Verpressvorgang durch Druckbeaufschlagung (Pfeile P) der Seitenwände 1.7, 1.8 des erfindungsgemäßen Profilrohrs 1. Dieses ist gemäß der Fig. 3a, b im Wesentlichen wie bereits in der Fig. 1 erläutert ausgebildet, weist jedoch keine Rippenelemente auf. In die im Bereich der eingezogenen, konkaven Deckwand-Bereiche 1.2, 1.3 gebildeten Freiräume 1.4 (vgl. Fig. 1) sind beim Gegenstand der Fig. 3a, b jeweils Ansatzteile 4 in Form flacher Metall-Lamellen eingesetzt. Diese weisen ausgehend von einem Hauptkörper 4.1 einen Endbereich in Form eines Vorsprungs 4.2 auf, der sich zunächst in einem sich an den Hauptkörper 4.1 anschließenden ersten Bereich 4.2a konisch verjüngt und sich anschließend in einem zweiten Bereich 4.2b wiederum leicht konisch verbreitert, so dass im Bereich einer Spitze 4.2c des Vorsprungs 4.2 Ecken 4.2d gebildet sind. Eine Länge L des Vorsprungs 4.2 ist dabei größer bemessen als eine Einzugstiefe T der Deckwand-Bereiche 1.2, 1.3, so dass das Ansatzteil 4 mit seinem Vorsprung 4.2 in den freien Raumbereich 1.4 einbringbar ist, wobei die Spitze 4.2c jeweils die Seitenwand 1.5, 1.6 berührt, ohne dass der Hauptkörper 4.1 des Ansatzteils 4 seinerseits bereits mit den Seitenwänden 1.5, 1.6 des Profilrohrs 1 in Anlage tritt.Figs. 3a, b show in detail the already mentioned Pressing process by pressurization (arrows P) the side walls 1.7, 1.8 of the profile tube according to the invention 1. This is according to the Fig. 3a, b substantially as already explained in FIG. 1, but has no rib elements on. In the area of the drafted, concave top wall areas 1.2, 1.3 formed Free spaces 1.4 (see Fig. 1) are in the subject of FIG. 3a, b respectively attachment parts 4 in the form of flat metal fins used. These show starting from a main body 4.1 an end region in the form of a projection 4.2, the first in a subsequent to the main body 4.1 first area is conically tapered and 4.2a then again slightly in a second area 4.2b conically widened, so that in the area of a tip 4.2c of the projection 4.2 corners 4.2d are formed. A length L of the projection 4.2 is dimensioned larger than a depth of insertion T the top wall areas 1.2, 1.3, leaving the attachment part 4 with its projection 4.2 in the free space area 1.4 can be introduced, the tip 4.2c respectively the side wall 1.5, 1.6 touched without the main body 4.1 of the attachment part 4 in turn already with the side walls 1.5, 1.6 of the profile tube 1 comes into contact.

In der Fig. 3b ist die Anordnung der Fig. 3a nochmals nach erfolgter Druckbeaufschlagung P gezeigt. Der Verpressdruck P bewirkt zunächst, dass sich die druckbeaufschlagten Seitenwände 1.7, 1.8 unter Verminderung ihres Abstands b (Fig. 1) aufeinander zu bewegen. Zugleich vertieft sich aufgrund von in den Deckwänden 1.5, 1.6 wirksamen, jeweils nach innen gerichteten Kräften der Einzug in den Deckwand-Bereichen 1.2, 1.3, bis a=a' (Fig. 1), so dass das PTC-Element 2 im Innern 1.1 des Profilrohrs 1 über seine Flachseiten 2a, 2b zwischen den Deckwänden 1.5, 1.6 eingeklemmt und verspannt wird. Letztere sind hierbei zum Ausbilden einer möglichst großen Kontaktfläche für einen Wärmeübergang mit dem PTC-Element 2 über dessen Flachseiten 2a, 2b auf ihren Innenseiten 1.5a, 1.6a leicht konvex gewölbt ausgeformt (vgl. Fig. 1, 3a). Zugleich bilden sich in den eingezogenen, konkaven Deckwand-Bereichen 1.2, 1.3 Auswölbungen 1.9 der Deckwände 1.5, 1.6, so dass der ehemals trapezförmige freie Raumbereich 1.4 (vgl. Fig. 1, 3a) nunmehr Hinterschneidungen 1.10 aufweist. Daraus ergibt sich ein in der Fig. 3b dargestelltes formschlüssiges Ineinandergreifen des Ansatzteils 4 im Bereich des Vorsprungs 4.2 (Ecken 4.2d) und der Auswölbungen 1.9 bzw. Hinterschneidungen 1.10 in den Deckwand-Bereichen 1.2, 1.3, so dass das Ansatzteil 4 klemmend am Profilrohr 1 gehalten ist. Der in der Fig. 3b weiterhin erkennbare leicht S-förmige Verlauf der Deckwände 1.5, 1.6 im Bereich der Auswölbung 1.9 bzw. Hinterschneidung 1.10 ermöglicht aufgrund einer gewissen Federwirkung zudem ein Ausgleichen von Höhenunterschieden und/oder Toleranzen sowohl des PTC-Elements 2 als auch des Profilrohrs 1.In Fig. 3b, the arrangement of Fig. 3a is again after completed pressurization P shown. The pressing pressure P first causes the pressurized Sidewalls 1.7, 1.8 reducing their spacing b (Fig. 1) to move towards each other. At the same time it deepens due to effective in the shrouds 1.5, 1.6, respectively inward forces of entry into the top wall areas 1.2, 1.3, to a = a '(FIG. 1), so that the PTC element 2 inside 1.1 of the profile tube 1 via his Flat sides 2a, 2b sandwiched between the top walls 1.5, 1.6 and becomes tense. The latter are here for training the largest possible contact surface for a heat transfer with the PTC element 2 over its flat sides 2a, 2b slightly convex on their inner sides 1.5a, 1.6a formed (see Fig. 1, 3a). At the same time form in the retracted, concave top wall areas 1.2, 1.3 bulges 1.9 of the cover walls 1.5, 1.6, so that the former trapezoidal free space area 1.4 (see Fig. 1, 3a) now Undercuts has 1.10. This results in a shown in Fig. 3b form-locking interlocking of the attachment part 4 in the region of the projection 4.2 (Corners 4.2d) and the bulges 1.9 or undercuts 1.10 in the top wall areas 1.2, 1.3, so that the Approach part 4 is clamped on the profile tube 1 is held. The in Fig. 3b also recognizable slightly S-shaped course the cover walls 1.5, 1.6 in the region of the bulge 1.9 or Undercut 1.10 allows due to a certain Spring effect also a compensation of height differences and / or tolerances of both the PTC element 2 and the Profile tube 1.

Aufgrund der in den Fig. 1, 2b, 3a gezeigten vorgeformten Einziehung der Deckwände 1.5, 1.6 des Profilrohrs 1 ist im Rahmen der Erfindung ein gegenüber vorbekannten Verfahren deutlich verringerter Druck P ausreichend, um die in Fig. 3b gezeigte Verbindung zwischen den Ansatzteilen 4 und dem Profilrohr 1 herzustellen, wobei zudem das Verspannen der PTC-Elemente 2 und die Montage der Ansatzteile 4 in ein und demselben Arbeitsschritt erfolgen. Der bereits erwähnte S-förmige Verlauf der Deckwände 1.5, 1.6 nach erfolgter Druckbeaufschlagung P bewirkt weiterhin, dass sich das erfindungsgemäße Profilrohr 1 nach Wegfall der Druckbeaufschlagung P, d.h. nach Entfernen eines entsprechenden Presswerkzeugs (nicht gezeigt) aufgrund einer im Material gespeicherten Spannkraft nicht mehr selbsttätig öffnen kann (Selbsthemmung). Auf diese Weise wird ein wesentlicher der eingangs aufgelisteten Nachteile entsprechender vorbekannter Verfahren bzw. Vorrichtungen sicher vermieden.Due to the preformed shown in Figs. 1, 2b, 3a Retraction of the cover walls 1.5, 1.6 of the profile tube 1 is in Frame of the invention over a previously known method significantly reduced pressure P sufficient to those shown in FIG. 3b connection shown between the neck parts 4 and the Produce profile tube 1, wherein also the distortion of the PTC elements 2 and the mounting of the attachment parts 4 in and take the same step. The already mentioned S-shaped course of the cover walls 1.5, 1.6 after completed Pressurization P also causes the inventive Profile tube 1 after elimination of the pressurization P, i. after removing a corresponding Press tool (not shown) due to a material in the stored clamping force can not open automatically (Self-locking). That way, being an essential one at the beginning listed disadvantages corresponding prior art Process or devices safely avoided.

Die Fig. 4a zeigt eine Seitenansicht des erfindungsgemäßen Profilrohrs 1 gemäß den Fig. 3a, b mit einer Mehrzahl von jeweils parallel zueinander ausgerichteten Ansatzteilen 4 in Form von Metall-Lamellen. Die Fig. 4b, c zeigen Schnitte durch eine Profilrohr-Lamellen-Anordnung gemäß der Fig. 4a. Die Ausgestaltungen gemäß der Fig. 4b und 4c unterscheiden sich dahingehend, dass die in der Fig. 4c gezeigten Ansatzteile 4 im äußeren Bereich 4.2b des Vorsprungs 4.2 eine im Wesentlichen rechtwinklige Abbiegung 4.2e aufweisen, durch die sich ein wärmeleitender Kontakt zwischen den Ansatzteilen 4 und dem Profilrohr 1 verbessern lässt.FIG. 4a shows a side view of the invention Profile tube 1 according to FIGS. 3a, b with a plurality of each parallel aligned attachment parts. 4 in the form of metal fins. Figs. 4b, c show sections by a profile tube-fin arrangement according to FIG. 4a. The embodiments according to FIGS. 4b and 4c differ in that the attachment parts shown in FIG. 4c 4 in the outer region 4.2b of the projection 4.2 a in Substantially right-angled turn 4.2e, by which is a thermally conductive contact between the neck parts 4 and the profile tube 1 can be improved.

In den Fig. 5a, 5b ist gezeigt, wie eine Anzahl von erfindungsgemäßen Profilrohren 1 mit eingesetzten PTC-Elementen 2 über eine Anordnung von Ansatzteilen 4 zu einer zusammengesetzten Vorrichtung, beim gezeigten Ausführungsbeispiel speziell einem Heizkörper 5 verbindbar ist. Verfahrenstechnisch kann der in den Fig. 5a, b gezeigte Gesamtaufbau des Heizkörpers 5 vorab zusammengestellt und mittels eines geeigneten Haltewerkzeugs (nicht gezeigt) noch unverspannt gehalten werden. Anschließend erfolgt das Verspannen des gesamten Heizkörpers 5 durch Druckbeaufschlagung der Seitenwände 1.7, 1.8 der Profilrohre 1 in einem einzigen Arbeitsgang, wie vorstehend anhand der Fig. 1, 2b, 3a gezeigt.In Figs. 5a, 5b is shown how a number of inventive Profile tubes 1 with inserted PTC elements 2 via an arrangement of attachment parts 4 to a assembled device, in the embodiment shown especially a radiator 5 is connected. process engineering can the overall structure shown in Figs. 5a, b of the radiator 5 assembled in advance and by means of a suitable holding tool (not shown) still to be kept relaxed. This is followed by the Bracing the entire radiator 5 by pressurization the side walls 1.7, 1.8 of the profile tubes 1 in a single operation, as described above with reference to FIG. 1, 2b, 3a.

Schließlich zeigen die Fig. 6a,b eine weitere Ausgestaltung des erfindungsgemäßen Profilrohrs 1 vor bzw. nach dem Verpressen (Druckbeaufschlagung P; Fig. 6a). Die konkave Ausbildung der Deckwände 1.5, 1.6 resultiert aus einem im Querschnitt zweischenkligen Aufbau mit Schenkeln 1.5b, 1.5c bzw. 1.6b, 1.6c, die vor dem Verpressen einen stumpfen Winkel α einschließen. Die Seitenwände 1.7, 1.8 und die Schenkel 1.5b, 1.6b sind dabei paarweise in einem leicht stumpfen Winkel zueinander angeordnet. Dadurch sind durch die Seitenwände 1.7, 1.8 und die Schenkel 1.5c, 1.6c zakkenartige Vorsprünge 3' gebildet (Fig. 6a).Finally, Figs. 6a, b show a further embodiment of the profile tube 1 according to the invention before or after the pressing (Pressurization P, Fig. 6a). The concave training the cover walls 1.5, 1.6 results from an im Cross-section two-legged construction with legs 1.5b, 1.5c or 1.6b, 1.6c, which before the pressing an obtuse angle Include α. The side walls 1.7, 1.8 and the Legs 1.5b, 1.6b are in pairs in a light obtuse angles to each other. This is through the side walls 1.7, 1.8 and the legs 1.5c, 1.6c zakkenartige Projections 3 'formed (Fig. 6a).

Bei seitlicher Druckbeaufschlagung legen sich die Schenkel 1.5c, 1.6c unter Verkleinerung des Winkels α (Fig. 6a) bis auf ca. 90° (Winkel α'; Fig. 6b) an die Seitenwände 1.7, 1.8 an, wobei wiederum die lichten Abstände zwischen den Seitenwänden 1.7, 1.8 und zwischen den Deckwänden 1.5, 1.6 bzw. deren Schenkeln 1.5b, 1.6b abnehmen, so dass sich erfindungsgemäß Funktionselemente (hier nicht gezeigt) im Inneren 1.1 des Profilrohrs 1 verspannen lassen. Die Vorsprünge 3" der Figur 6b, die sich aus den Vorsprüngen 3' der Fig. 6a ergeben, lassen sich als Rippenelemente (vgl. Bezugszeichen 3 in Fig. 1) auffassen und einsetzen. When lateral pressure is applied, the legs lie 1.5c, 1.6c with reduction of the angle α (FIG. 6a) to to about 90 ° (angle α '; Fig. 6b) to the side walls 1.7, 1.8, again with the clearances between the Side walls 1.7, 1.8 and between the walls 1.5, 1.6 or their legs 1.5b, 1.6b decrease, so that according to the invention Functional elements (not shown here) inside 1.1 of the profile tube 1 can be braced. The projections 3 "of Figure 6b, resulting from the projections 3 ' of Fig. 6a, can be used as rib elements (see. Reference numeral 3 in Fig. 1) grasp and use.

BezugszeichenlisteLIST OF REFERENCE NUMBERS

11
Profilrohrsection tube
1.11.1
Innenrauminner space
1.2, 1.31.2, 1.3
eingezogener Deckwand-BereichRetracted top wall area
1.41.4
freier Raumbereichfree space area
1.5, 1.61.5, 1.6
Deckwandtop wall
1.5a, 1.6a1.5a, 1.6a
Innenseiteinside
1.5b, c1.5b, c
Schenkelleg
1.6b, c1.6b, c
Schenkelleg
1.7, 1.81.7, 1.8
SeitenwandSide wall
1.91.9
Auswölbungbulge
1.101.10
Hinterschneidungundercut
22
PTC-HeizelementPTC heating element
2.12.1
PTC-WiderstandPTC resistor
2.22.2
Kontaktbahncontact track
2.32.3
Isolierunginsulation
2.42.4
Kontaktrahmencontact frame
33
Rippenelementrib element
3', 3"3 ', 3 "
Vorsprunghead Start
44
Ansatzteil, Metall-LamelleAttachment part, metal lamella
4.14.1
Hauptkörpermain body
4.24.2
Vorsprunghead Start
4.2a, b4.2a, b
BereichArea
4.2c4.2c
Spitzetop
4.2d4.2d
Eckecorner
4.2e4.2e
Abbiegungturn
55
Heizkörperradiator
aa
Abstanddistance
a'a '
Abmessungdimension
bb
Abstanddistance
b'b '
Abmessungdimension
LL
Längelength
PP
Verpressdruckinjection pressure
TT
Tiefedepth
α, α'α, α '
Winkelangle

Claims (16)

Verfahren zum Verspannen von Funktionselementen, insbesondere PTC-Heizelementen, in einem hohlen Aufnahmemittel (1), wie einem Rohr mit zwei einander und Flachseiten der Funktionselemente (2-2.4) gegenüberliegenden, zumindest teilweise konkaven Deckwand-Bereichen (1.5, 1.6), wobei die Funktionselemente (2-2.4) durch Druckbeaufschlagen der sich im Wesentlichen senkrecht zu den konkaven Deckwand-Bereichen (1.5, 1.6) erstreckenden weiteren Seitenwände (1.7, 1.8) verspannt werden.Method for clamping functional elements, in particular PTC heating elements, in a hollow receiving means (1), like a pipe with two each other and flat sides the functional elements (2-2.4) opposite, at least partially concave top wall areas (1.5, 1.6), wherein the functional elements (2-2.4) by pressurizing which is substantially perpendicular to the concave top wall areas (1.5, 1.6) extending further side walls (1.7, 1.8) are braced. Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass die Seitenwände (1.7, 1.8) im Wesentlichen in Richtung ihrer Flächennormale druckbeaufschlagt werden. A method according to claim 1, characterized in that the side walls (1.7, 1.8) are pressurized substantially in the direction of their surface normal. Verfahren nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass durch die Druckbeaufschlagung ein lichter Abstand der Seitenwände (1.7, 1.8) verringert wird, auf die die Druckbeaufschlagung erfolgt, wobei sich Bereiche der konkaven Deckwände (1.5, 1.6) zum Einklemmen der Funktionselemente (2-2.4) einander annähern.A method according to claim 1 or 2, characterized in that by the pressurization, a clear distance of the side walls (1.7, 1.8) is reduced, to which the pressurization takes place, wherein areas of the concave cover walls (1.5, 1.6) for clamping the functional elements (2 -2.4) approach each other. Verfahren nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass durch die Druckbeaufschlagung ein Abstand zwischen Teilabschnitten (1.5a, 1.6a, 1.5b, 1.6b) wenigstens eines der konkaven Deckwand-Bereiche (1.5, 1.6) verringert und zwischen diesen wenigstens ein Ansatzteil (4), wie eine Metall-Lamelle oder -Wellrippe, dauerhaft eingeklemmt wird.Method according to one of claims 1 to 3, characterized in that by the pressurization, a distance between subsections (1.5a, 1.6a, 1.5b, 1.6b) of at least one of the concave top wall portions (1.5, 1.6) reduced and between these at least an attachment part (4), such as a metal lamella or rib, is permanently clamped. Rohr (1), insbesondere zur Aufnahme von Funktionselementen, wie PTC-Heizelementen (2), mit zwei einander und Flachseiten (2a, 2b) der Funktionselemente gegenüberliegenden, zumindest teilweise konkaven Deckwand-Bereichen (1.2, 1.3) sowie mit sich im Wesentlichen senkrecht zu den konkaven Deckwand-Bereichen (1.2, 1.3) erstreckenden Seitenwänden (1.7, 1.8), die zu einer Verringerung eines lichten Abstands (a) zwischen den konkaven Deckwand-Bereichen (1.2, 1.3) mit einem Verpressdruck (P) beaufschlagbar sind.Pipe (1), in particular for receiving functional elements, like PTC heating elements (2), with two each other and flat sides (2a, 2b) of the functional elements opposite, at least partially concave top wall areas (1.2, 1.3) as well as in essence perpendicular to the concave top wall areas (1.2, 1.3) extending side walls (1.7, 1.8), to a Reduction of a clear distance (a) between the concave top wall areas (1.2, 1.3) with a Verpressdruck (P) can be acted upon. Rohr nach Anspruch 5, dadurch gekennzeichnet, dass die Seitenwände im Wesentlichen in Richtung zu ihrer Flächennormale druckbeaufschlagbar sind.Pipe according to claim 5, characterized in that the side walls are pressurizable substantially in the direction of their surface normal. Rohr nach Anspruch 5 oder 6, dadurch gekennzeichnet, dass durch Deckwände (1.5, 1.6) der konkaven Deckwand-Bereiche (1.2, 1.3) vor einer Druckbeaufschlagung (P) ein sich nach außen erweiternder freier Raumbereich (1.4) mit im Wesentlichen einem gleichschenkligen Trapez entsprechenden Querschnitt definiert ist.Pipe according to claim 5 or 6, characterized in that by cover walls (1.5, 1.6) of the concave top wall portions (1.2, 1.3) before pressurization (P) an outwardly expanding free space area (1.4) with substantially an isosceles trapezoid corresponding cross-section is defined. Rohr nach einem der Ansprüche 5 bis 7, dadurch gekennzeichnet, dass der freie Raumbereich (1.4) zum Aufnehmen zumindest eines komplementären Endbereichs (4.2) eines Ansatzteils (4), wie einer Metall-Lamelle oder -Wellrippe, ausgebildet ist.Tube according to one of claims 5 to 7, characterized in that the free space area (1.4) for receiving at least one complementary end portion (4.2) of a lug portion (4), such as a metal lamella or -Wellrippe is formed. Rohr nach Anspruch 8, dadurch gekennzeichnet, dass die Deckwände (1.5, 1.6) des konkaven Deckwand-Bereichs (1.2, 1.3) den Endbereich (4.2) des Ansatzteils (4) nach erfolgter Druckbeaufschlagung (P) im Wesentlichen formschlüssig umgeben, so dass dieses klemmend gehalten ist.Pipe according to claim 8, characterized in that the cover walls (1.5, 1.6) of the concave top wall area (1.2, 1.3) surround the end area (4.2) of the attachment part (4) substantially after the application of pressure (P) in a form-fitting manner, so that this is held clamped. Rohr nach einem der Ansprüche 5 bis 8, dadurch gekennzeichnet, dass die Deckwände (1.5, 1.6) der konkaven Deckwand-Bereiche (1.2, 1.3) nach erfolgter Druckbeaufschlagung (P) Hinterschneidungen (1.10) zum Aufnehmen komplementärer Eckbereiche (4.2d) des Ansatzteils (4) definieren.Pipe according to one of claims 5 to 8, characterized in that the cover walls (1.5, 1.6) of the concave top wall portions (1.2, 1.3) after pressurization (P) undercuts (1.10) for receiving complementary corner regions (4.2d) of the attachment part (4) define. Rohr nach Anspruch einem der Ansprüche 5 bis 6, dadurch gekennzeichnet, dass die Deck- und/oder Seitenwände (1.5-1.8) Rippenelemente (3) aufweisen.Pipe according to claim any one of claims 5 to 6, characterized in that the cover and / or side walls (1.5-1.8) have rib elements (3). Rohr nach Anspruch 11, dadurch gekennzeichnet, dass die Rippenelemente (3) eine Erstreckungskomponente in Längsrichtung des Rohrs (1) aufweisen.Pipe according to claim 11, characterized in that the rib elements (3) have an extension component in the longitudinal direction of the pipe (1). Rohr nach Anspruch 11 oder 12, dadurch gekennzeichnet, dass die Rippenelemente (3) im Querschnitt eine Erstreckung im Wesentlichen senkrecht zu einem lokalen Verlauf der Deck- und/oder Seitenwände (1.5-1.8) aufweisen. Pipe according to claim 11 or 12, characterized in that the rib elements (3) have an extension in cross-section substantially perpendicular to a local course of the cover and / or side walls (1.5-1.8). Verwendung eines Rohrs nach einem der Ansprüche 5 bis 13 zum Schaffen einer zusammengesetzten Vorrichtung (5) aus einer Anzahl von Rohren (1) und diese verbindenden Ansatzteilen (4), wobei die Ansatzteile (4) durch die Rohre (1) gehalten sind.Use of a pipe according to one of claims 5 to 13 for providing a composite device (5) from a number of tubes (1) and these connecting Attachment parts (4), wherein the attachment parts (4) through the Tubes (1) are held. Verwendung eines Rohrs nach einem der Ansprüche 5 bis 14 in einem Heizkörper (5) mit einer Anordnung von Wärmeabgabe-Rippen (4).Use of a pipe according to one of claims 5 to 14 in a radiator (5) with an array of heat-dissipating fins (4). Heizkörper mit einer Anordnung von Wärmeabgabe-Rippen, gekennzeichnet durch eine Anzahl von Rohren (1) nach einem der Ansprüche 5 bis 15.Radiator with an arrangement of heat-emitting fins, characterized by a number of tubes (1) according to one of claims 5 to 15.
EP04029778A 2003-12-20 2004-12-16 Tube and process for compression-fitting of functional elements in such a tube Active EP1545157B1 (en)

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DE10360159A1 (en) 2005-07-21
EP1545157B1 (en) 2006-11-22
DE502004002082D1 (en) 2007-01-04
EP1545157A3 (en) 2005-10-12
US7332693B2 (en) 2008-02-19
ATE346475T1 (en) 2006-12-15
US20050144896A1 (en) 2005-07-07

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