EP1866590B1 - Heat exchanger, in particular condenser for air conditioning systems - Google Patents

Heat exchanger, in particular condenser for air conditioning systems Download PDF

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Publication number
EP1866590B1
EP1866590B1 EP06706820A EP06706820A EP1866590B1 EP 1866590 B1 EP1866590 B1 EP 1866590B1 EP 06706820 A EP06706820 A EP 06706820A EP 06706820 A EP06706820 A EP 06706820A EP 1866590 B1 EP1866590 B1 EP 1866590B1
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EP
European Patent Office
Prior art keywords
collar
heat exchanger
collecting tube
flange
connecting flange
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.)
Not-in-force
Application number
EP06706820A
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German (de)
French (fr)
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EP1866590A1 (en
Inventor
Conejo Jimenez
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.)
Mahle Behr Spain SA
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Frape Behr SA
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Publication date
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Priority to EP06706820A priority Critical patent/EP1866590B1/en
Publication of EP1866590A1 publication Critical patent/EP1866590A1/en
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Publication of EP1866590B1 publication Critical patent/EP1866590B1/en
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/02—Header boxes; End plates
    • F28F9/0246—Arrangements for connecting header boxes with flow lines
    • F28F9/0251—Massive connectors, e.g. blocks; Plate-like connectors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B39/00—Evaporators; Condensers
    • F25B39/04—Condensers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/02—Header boxes; End plates
    • F28F9/0246—Arrangements for connecting header boxes with flow lines
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
    • F28D2021/0019—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for
    • F28D2021/008—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for for vehicles
    • F28D2021/0084—Condensers
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/4935—Heat exchanger or boiler making
    • Y10T29/49373—Tube joint and tube plate structure

Definitions

  • the invention relates to a heat exchanger, in particular for air conditioning systems, in particular of motor vehicles according to the preamble of claim 1 - known by the EP 1 439 367 A1 ,
  • the invention also relates to a method for producing a heat exchanger according to the preamble of claim 5.
  • a condenser consists essentially of a condenser block, which is constructed of flat tubes and corrugated fins, as well as arranged on both sides of the block manifolds, which are in communicating connection with the tubes of the condenser block.
  • the headers and the flat tubes of the condenser are flowed through by a refrigerant, which is supplied to the condenser from a refrigerant circuit via connecting flanges and withdrawn again.
  • the flanges are prefabricated separate parts, which are connected on the one hand with a header of the condenser and on the other hand with a refrigerant line.
  • the collar inserted into a bore of the connecting flange is plastically deformed by means of a polygonal punch such that a fixing takes place.
  • a polygonal punch Under Polygonstempel is a forming or expansion tool to understand, which has no circular cross-section, but a polygonal cross-section, which in Direction slightly tapered towards a point.
  • the polygonal punches may have three, four or six surfaces which are tapered in the shape of a pyramid or designed as a truncated pyramid. This tool deforms the collar in the connecting flange.
  • the prepared for the subsequent soldering, completed heat exchanger can be soldered due to the fixation of the invention without further Löt Anlagen in a brazing furnace, so that a Dichtlötung between the collar and the flange is achieved.
  • the inner cross section of the collar has a polygonal, preferably a hexagonal cross-section - like a hexagon socket.
  • the manifold is in two parts, d. H. formed with a lid and bottom part, wherein the collar is integrally formed on the lid.
  • the object of the invention is also achieved by a method having the features of claim 5.
  • the collar formed from the collecting tube is inserted into the bore of the connecting flange and then fixed by widening by means of the polygon punch. Connection flange and manifold cover are then sufficiently firmly connected together that then soldering can be done without further aids.
  • Fig. 1 shows a corner section of a condenser 1 for an unillustrated air conditioning system of a motor vehicle.
  • the condenser 1 has a condenser block 3 consisting of flat tubes 2 and ribs, not shown, which is connected to a collecting pipe 4.
  • Another manifold on the opposite side of the capacitor block is not shown.
  • the manifold 4 is formed in two parts, that is, it has a bottom 5 and a lid 6, which have an approximately semicircular cross section and are set in one another.
  • the end face of the collecting tube 4 is closed by an end wall 7 and forms a cavity which communicates with the flat tubes 2.
  • a collar 8 is integrally formed, ie by punching punching.
  • connection flange 9 is shown, which is to be connected to the manifold 4.
  • the connection flange 9 has a through-bore 10, which is connected on the one hand to a refrigerant connection line, not shown, and on the other hand to the collar 8 of the collecting tube 4.
  • the items shown in the drawing 2, 5, 6, 7, 8, 9 are made of aluminum or aluminum alloys and are soldered together. To prepare the soldering process, all parts are joined together, in particular, the connecting flange 9 is placed with its through hole 10 on the collar 8 of the manifold 4. This is already a preliminary positioning and centering of the connection flange 9 on the manifold 4th
  • Fig. 2 shows the flange 9, placed on the cover 6 of the manifold 4th
  • Fig. 3 shows a view in the direction X on the lid 6, wherein the flow cross section of the collar 8 appears as a blackened circular surface 8a.
  • the circular cross-section 8a is deformed by means of a polygon punch, not shown, ie widened in particular with respect to the through-bore 10 of the connecting flange 9.
  • the term "polygonal punch” is intended to mean a dome-shaped tool which has a non-circular, polygonal cross-section which tapers in the direction of impact, ie is wedge-shaped or has the shape of a truncated pyramid.
  • a deformation of the inner diameter of the collar 8 takes place substantially over the polygon edges, which dig into the material of the collar 8 and press it outward, whereby a pressure is created.
  • the cross section of the polygonal punch preferably has the shape of a regular hexagon, although more or fewer corners are possible.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Air-Conditioning For Vehicles (AREA)
  • Compression-Type Refrigeration Machines With Reversible Cycles (AREA)
  • Details Of Heat-Exchange And Heat-Transfer (AREA)
  • Superconductors And Manufacturing Methods Therefor (AREA)
  • Separation By Low-Temperature Treatments (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)

Abstract

Heat exchanger comprises one collector pipe (4) and one connection flange (9) which has material connection with collector pipe and communicates there with. The collector pipe comprises collar (8) and the connection flange comprises boring (10) wherein the collar can be connected in front of material fit. The collar can be fixed by a reshaping by means of stamp having polygonal cross section. An independent claim is also included for the method for material fit connection.

Description

Die Erfindung betrifft einen Wärmeübertrager, insbesondere für Klimaanlagen, insbesondere von Kraftfahrzeugen nach dem Oberbegriff des Patentanspruches 1 - bekannt durch die EP 1 439 367 A1 . Die Erfindung betrifft auch ein Verfahren zur Herstellung eines Wärmeübertragers nach dem Oberbegriff des Patentanspruches 5.The invention relates to a heat exchanger, in particular for air conditioning systems, in particular of motor vehicles according to the preamble of claim 1 - known by the EP 1 439 367 A1 , The invention also relates to a method for producing a heat exchanger according to the preamble of claim 5.

Kondensatoren für Klimaanlagen von Kraftfahrzeugen werden heute vollständig aus Aluminiumteilen hergestellt und hartgelötet. Ein Kondensator besteht im Wesentlichen aus einem Kondensatorblock, der aus Flachrohren und Wellrippen aufgebaut ist, sowie beiderseits des Blockes angeordneten Sammelrohren, welcher in kommunizierender Verbindung mit den Rohren des Kondensatorblockes stehen. Die Sammelrohre und die Flachrohre des Kondensators werden von einem Kältemittel durchströmt, welches dem Kondensator aus einem Kältemittelkreislauf über Anschlussflansche zugeführt und wieder entzogen wird. Die Anschlussflansche sind vorgefertigte separate Teile, die einerseits mit einem Sammelrohr des Kondensators und andererseits mit einer Kältemittelleitung verbunden werden.Today, automotive air conditioner condensers are made entirely from aluminum parts and brazed. A condenser consists essentially of a condenser block, which is constructed of flat tubes and corrugated fins, as well as arranged on both sides of the block manifolds, which are in communicating connection with the tubes of the condenser block. The headers and the flat tubes of the condenser are flowed through by a refrigerant, which is supplied to the condenser from a refrigerant circuit via connecting flanges and withdrawn again. The flanges are prefabricated separate parts, which are connected on the one hand with a header of the condenser and on the other hand with a refrigerant line.

Durch die US-A 5,477,919 wurde ein Kondensator für Klimaanlagen von Kraftfahrzeugen bekannt, bei welchem ein Kältemittelanschlussflansch mit einem Sammelrohr verbunden ist, wobei zur Herstellung eines dichten Kältemittelströmungskanals Buchsen zwischen Kältemittelflansch und Sammelrohr angeordnet und mit den zu verbindenden Teilen verlötet sind. Diese Flanschverbindung ist wegen der Vielzahl der Teile mit relativ hohen Herstellkosten verbunden.By the US-A 5,477,919 has been known a condenser for air conditioning systems of motor vehicles, in which a refrigerant connection flange is connected to a manifold, wherein for the production of a dense refrigerant flow channel bushes between the refrigerant flange and manifold arranged and soldered to the parts to be joined. These Flange connection is associated with relatively high production costs because of the large number of parts.

Durch die EP 1 150 088 A2 wurde eine Verbindung zwischen einem Kältemittelanschlussflansch und einem Sammelrohr eines Kondensators bekannt, wobei der Kältemittelflansch einen angeformten Stutzen aufweist, welcher in eine Bohrung des Sammelrohres gesteckt und mittels eines Stempels derart aufgeweitet wird, dass eine Fixierung und Verankerung des Flansches auf dem Sammelrohr erreicht wird. Anschließend erfolgt die Verlötung von Sammelrohr und Flansch. Auch diese Art der Verbindung ist kostenaufwändig, insbesondere wegen der Ausbildung des Flansches.By the EP 1 150 088 A2 has been known a connection between a refrigerant connection flange and a manifold of a capacitor, wherein the refrigerant flange has a molded neck, which is inserted into a bore of the manifold and expanded by means of a punch such that a fixation and anchoring of the flange is achieved on the manifold. Subsequently, the soldering of manifold and flange. This type of connection is costly, especially because of the formation of the flange.

Durch die oben genannte EP 1 439 367 A1 , von der die Erfindung ausgeht, wurde (gemäß Ausführungsbeispiel gemäß Fig. 6) eine Verbindung zwischen einem Sammelrohr und einem Kältemittelanschlussflansch bekannt, wobei das Sammelrohr zweiteilig ausgebildet ist und einen Deckel mit ausgeformtem Kragen aufweist, der in eine Bohrung des Anschlussflansches gesteckt wird. Dabei ist zur Fixierung des Anschlussflansches auf dem Sammelrohr ein leichter Klemmsitz vorgesehen. Nachteilig hierbei könnte sein, dass der Klemmsitz für eine sichere Fixierung nicht immer ausreichend ist und dass eine Verdrehung zwischen Anschlussflansch und Sammelrohr um die Achse des Kragens auftreten könnte.By the above EP 1 439 367 A1 , from which the invention proceeds, has been known (according to the embodiment of FIG. 6) a connection between a manifold and a refrigerant flange, wherein the manifold is formed in two parts and having a lid with a molded collar which is inserted into a bore of the connecting flange. In this case, a slight clamping fit is provided for fixing the connection flange on the manifold. The disadvantage here could be that the clamping seat for a secure fixation is not always sufficient and that a rotation between flange and manifold could occur around the axis of the collar.

Es ist Aufgabe der vorliegenden Erfindung, einen Wärmeübertrager der eingangs genannten Art bezüglich seiner Herstellung, insbesondere hinsichtlich der Verbindung zwischen Anschlussflansch und Sammelrohr einfacher und sicherer zu gestalten sowie ein verbessertes Verfahren zur Fixierung des Anschlussflansches am Sammelrohr bereitzustellen.It is an object of the present invention to make a heat exchanger of the type mentioned above with respect to its manufacture, in particular with regard to the connection between the connection flange and collector simpler and safer and to provide an improved method for fixing the flange to the manifold.

Diese Aufgabe wird zunächst durch die Merkmale des Patentanspruches 1 gelöst. Erfindungsgemäß ist vorgesehen, dass der in eine Bohrung des Anschlussflansches eingesetzte Kragen mittels eines Polygonstempels derart plastisch verformt wird, dass eine Fixierung erfolgt. Unter Polygonstempel ist ein Umform- oder Aufweitwerkzeug zu verstehen, welches keinen kreisrunden Querschnitt, sondern einen Polygonquerschnitt aufweist, der sich in Richtung auf eine Spitze hin leicht verjüngt. Beispielsweise kann der Polygonstempel drei, vier oder sechs Flächen aufweisen, die sich pyramidenartig verjüngen oder als Pyramidenstumpf ausgebildet sind. Mit diesem Werkzeug wird der im Anschlussflansch steckende Kragen verformt. Damit wird der Vorteil einer verbesserten Fixierung des Anschlussflansches auf dem Sammelrohr erreicht. Der für die nachfolgende Lötung vorbereitete, komplettierte Wärmeübertrager kann infolge der erfindungsgemäßen Fixierung ohne weitere Löthilfen in einem Lötofen gelötet werden, so dass eine Dichtlötung zwischen dem Kragen und dem Anschlussflansch erzielt wird.This object is initially achieved by the features of claim 1. According to the invention, it is provided that the collar inserted into a bore of the connecting flange is plastically deformed by means of a polygonal punch such that a fixing takes place. Under Polygonstempel is a forming or expansion tool to understand, which has no circular cross-section, but a polygonal cross-section, which in Direction slightly tapered towards a point. For example, the polygonal punches may have three, four or six surfaces which are tapered in the shape of a pyramid or designed as a truncated pyramid. This tool deforms the collar in the connecting flange. Thus, the advantage of improved fixation of the connection flange is achieved on the manifold. The prepared for the subsequent soldering, completed heat exchanger can be soldered due to the fixation of the invention without further Löthilfe in a brazing furnace, so that a Dichtlötung between the collar and the flange is achieved.

In vorteilhafter Ausgestaltung der Erfindung erfolgt durch das Hineindrücken des Polygonstempels in den Kragen des Sammelrohres eine Aufweitung des Kragens gegenüber der Bohrung des Anschlussflansches, wobei ein inniger Kontakt zwischen Kragen und Anschlussflansch im Bereich der Polygonecken bzw. -kanten hergestellt wird. Es erfolgt also nur eine partielle Aufweitung - bei einem Sechseckquerschnitt also nur an sechs Ecken bzw. Kanten, jeweils um 60 Grad auf dem Umfang versetzt. Dies begünstigt infolge Lotspaltbildung eine sichere Dichtlötung. Nach der Aufweitung mittels Polygonstempel weist der Innenquerschnitt des Kragens einen Polygon-, vorzugsweise einen Sechseckquerschnitt - wie ein Innensechskant - auf.In an advantageous embodiment of the invention is carried out by pushing the polygon punch in the collar of the manifold expansion of the collar relative to the bore of the connecting flange, wherein an intimate contact between the collar and flange in the region of the polygon edges or edges is made. So there is only a partial expansion - in a hexagonal cross-section so only at six corners or edges, each offset by 60 degrees on the circumference. This favors due to Lotspaltbildung a secure Dichtlötung. After the expansion by means of polygonal punches, the inner cross section of the collar has a polygonal, preferably a hexagonal cross-section - like a hexagon socket.

In vorteilhafter Ausgestaltung der Erfindung ist das Sammelrohr zweiteilig, d. h. mit einem Deckel und Bodenteil ausgebildet, wobei der Kragen am Deckel angeformt ist. Dadurch ergeben sich Vorteile bei der Herstellung des Kragens und beim Fixieren mittels des Polygonstempels.In an advantageous embodiment of the invention, the manifold is in two parts, d. H. formed with a lid and bottom part, wherein the collar is integrally formed on the lid. This results in advantages in the production of the collar and fixing by means of the polygon punch.

Die Aufgabe der Erfindung wird auch durch ein Verfahren mit den Merkmalen des Patentanspruches 5 gelöst. Erfindungsgemäß ist vorgesehen, dass zunächst der aus dem Sammelrohr ausgeformte Kragen in die Bohrung des Anschlussflansches eingesetzt und anschließend mittels des Polygonstempels durch Aufweitung fixiert wird. Anschlussflansch und Sammelrohrdeckel sind danach hinreichend fest miteinander verbunden, dass danach eine Lötung ohne weitere Hilfsmittel erfolgen kann.The object of the invention is also achieved by a method having the features of claim 5. According to the invention, it is provided that first the collar formed from the collecting tube is inserted into the bore of the connecting flange and then fixed by widening by means of the polygon punch. Connection flange and manifold cover are then sufficiently firmly connected together that then soldering can be done without further aids.

Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung dargestellt und wird im Folgenden näher beschrieben. Es zeigen

Fig. 1
einen Ausschnitt eines Kondensators mit einem Anschlussflansch vor dessen Montage,
Fig. 2
den auf dem Sammelrohr des Kondensators montierten Anschlussflansch und
Fig. 3
eine Ansicht von innen auf das Sammelrohr im Bereich des Anschlussflansches.
An embodiment of the invention is illustrated in the drawing and will be described in more detail below. Show it
Fig. 1
a section of a capacitor with a connection flange before its assembly,
Fig. 2
the mounted on the manifold of the condenser flange and
Fig. 3
a view from the inside of the manifold in the region of the connecting flange.

Fig. 1 zeigt einen Eckausschnitt eines Kondensators 1 für eine nicht dargestellte Klimaanlage eines Kraftfahrzeuges. Der Kondensator 1 weist einen aus Flachrohren 2 und nicht dargestellten Rippen bestehenden Kondensatorblock 3 auf, welcher mit einem Sammelrohr 4 verbunden ist. Ein weiteres Sammelrohr auf der entgegengesetzten Seite des Kondensatorblockes ist nicht dargestellt. Das Sammelrohr 4 ist zweiteilig ausgebildet, d. h. es weist einen Boden 5 und einen Deckel 6 auf, welche einen etwa halbkreisförmigen Querschnitt aufweisen und ineinander gesetzt sind. Stirnseitig ist das Sammelrohr 4 durch eine Endwand 7 abgeschlossen und bildet einen Hohlraum, welcher mit den Flachrohren 2 kommuniziert. Aus dem Deckel 6 ist ein Kragen 8 einstückig ausgeformt, d. h. durch Lochstanz-Prägen. Fig. 1 shows a corner section of a condenser 1 for an unillustrated air conditioning system of a motor vehicle. The condenser 1 has a condenser block 3 consisting of flat tubes 2 and ribs, not shown, which is connected to a collecting pipe 4. Another manifold on the opposite side of the capacitor block is not shown. The manifold 4 is formed in two parts, that is, it has a bottom 5 and a lid 6, which have an approximately semicircular cross section and are set in one another. The end face of the collecting tube 4 is closed by an end wall 7 and forms a cavity which communicates with the flat tubes 2. From the cover 6, a collar 8 is integrally formed, ie by punching punching.

In der Zeichnung oberhalb des Sammelrohres 4 ist ein Anschlussflansch 9 dargestellt, der mit dem Sammelrohr 4 zu verbinden ist. Der Anschlussflansch 9 weist eine Durchgangsbohrung 10 auf, welche einerseits mit einer nicht dargestellten Kältemittelanschlussleitung und andererseits mit dem Kragen 8 des Sammelrohres 4 verbunden wird. Die in der Zeichnung dargestellten Einzelteile 2, 5, 6, 7, 8, 9 bestehen aus Aluminium bzw. Aluminiumlegierungen und werden miteinander verlötet. Zur Vorbereitung des Lötprozesses werden alle Teile zusammengefügt, insbesondere wird der Anschlussflansch 9 mit seiner Durchgangsbohrung 10 auf den Kragen 8 des Sammelrohres 4 gesetzt. Damit erfolgt bereits eine vorläufige Positionierung und Zentrierung des Anschlussflansches 9 auf dem Sammelrohr 4.In the drawing above the manifold 4, a connection flange 9 is shown, which is to be connected to the manifold 4. The connection flange 9 has a through-bore 10, which is connected on the one hand to a refrigerant connection line, not shown, and on the other hand to the collar 8 of the collecting tube 4. The items shown in the drawing 2, 5, 6, 7, 8, 9 are made of aluminum or aluminum alloys and are soldered together. To prepare the soldering process, all parts are joined together, in particular, the connecting flange 9 is placed with its through hole 10 on the collar 8 of the manifold 4. This is already a preliminary positioning and centering of the connection flange 9 on the manifold 4th

Fig. 2 zeigt den Flansch 9, aufgesetzt auf den Deckel 6 des Sammelrohres 4. Fig. 2 shows the flange 9, placed on the cover 6 of the manifold 4th

Fig. 3 zeigt eine Ansicht in Richtung X auf den Deckel 6, wobei der Strömungsquerschnitt des Kragens 8 als geschwärzte Kreisfläche 8a erscheint. Erfindungsgemäß ist vorgesehen, dass der Kreisquerschnitt 8a mittels eines nicht dargestellten Polygonstempels verformt, d. h. insbesondere gegenüber der Durchgangsbohrung 10 des Anschlussflansches 9 aufgeweitet wird. Unter Polygonstempel soll ein domförmiges Werkzeug verstanden werden, welches einen nicht kreisförmigen, polygonförmigen Querschnitt aufweist, welcher sich in Stossrichtung verjüngt, d. h. keilförmig oder pyramidenstumpfförmig ausgebildet ist. Insofern erfolgt eine Verformung des Innendurchmessers des Kragens 8 im Wesentlichen über die Polygonkanten, welche sich in das Material des Kragens 8 eingraben und dieses nach außen drücken, wodurch eine Pressung entsteht. Der Querschnitt des Polygonstempels hat vorzugsweise die Form eines regelmäßigen Sechsecks, wobei allerdings auch mehr oder weniger Ecken möglich sind. Durch diese Umformung des Kragens wird eine hinreichende Fixierung zwischen Sammelrohr 4, respektive Deckel 6 und Anschlussflansch 9 erreicht. In diesem fixierten Zustand können Anschlussflansch 9 und Deckel 6 sowie der gesamte Kondensator 1 in einem Arbeitsgang in einem nicht dargestellten Lötofen gelötet werden. Fig. 3 shows a view in the direction X on the lid 6, wherein the flow cross section of the collar 8 appears as a blackened circular surface 8a. According to the invention, it is provided that the circular cross-section 8a is deformed by means of a polygon punch, not shown, ie widened in particular with respect to the through-bore 10 of the connecting flange 9. The term "polygonal punch" is intended to mean a dome-shaped tool which has a non-circular, polygonal cross-section which tapers in the direction of impact, ie is wedge-shaped or has the shape of a truncated pyramid. In this respect, a deformation of the inner diameter of the collar 8 takes place substantially over the polygon edges, which dig into the material of the collar 8 and press it outward, whereby a pressure is created. The cross section of the polygonal punch preferably has the shape of a regular hexagon, although more or fewer corners are possible. By this deformation of the collar, a sufficient fixation between manifold 4, respectively cover 6 and flange 9 is achieved. In this fixed state can flange 9 and cover 6 and the entire capacitor 1 are soldered in one operation in a soldering furnace, not shown.

Claims (5)

  1. A heat exchanger, in particular condenser (1) for air conditioning systems, in particular of motor vehicles, having at least one collecting tube (4) and having at least one connecting flange (9) which is cohesively joined and connected in a communicating manner to the collecting tube (4), with the collecting tube (4) having a collar (8) and the connecting flange (9) having a bore (10) in which the collar (8) can be fixed before the cohesive joining, characterized in that the collar (8) is fixed by a deforming operation by means of a punch which has a polygonal cross section.
  2. The heat exchanger as claimed in claim 1, characterized in that the collar (8) has an internal cross section (8a) which can be expanded against the bore (10) by means of the polygonal punch.
  3. The heat exchanger as claimed in claim 1 or 2, characterized in that the collecting tube (4) is of two-part design and has a base (5) and a cover (6) on which the collar (8) is integrally formed.
  4. The heat exchanger as claimed in claim 1, 2 or 3, characterized in that the collar (8), after the deformation or expansion, has an internal cross section (8a) with the shape of a polygon, preferably of a regular hexagon.
  5. A method for cohesive joining, in particular for soldering a heat exchanger (1) having at least one collecting tube (4) and a connecting flange (8) which is to be fastened to said collecting tube (4), characterized in that a collar (8) is formed out of the collecting tube (4, 6), in that the connecting flange (9) is positioned on the collecting tube (4, 6), and the collar (8) is inserted into a bore (10) of the connecting flange (9), is subsequently deformed by means of a polygonal punch, is thereby fixed and is subsequently soldered in a soldering furnace.
EP06706820A 2005-03-31 2006-02-10 Heat exchanger, in particular condenser for air conditioning systems Not-in-force EP1866590B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP06706820A EP1866590B1 (en) 2005-03-31 2006-02-10 Heat exchanger, in particular condenser for air conditioning systems

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP05007069A EP1710529B1 (en) 2005-03-31 2005-03-31 Heat exchanger, in particular condenser for air conditioning
EP06706820A EP1866590B1 (en) 2005-03-31 2006-02-10 Heat exchanger, in particular condenser for air conditioning systems
PCT/EP2006/001190 WO2006102951A1 (en) 2005-03-31 2006-02-10 Heat exchanger, in particular capacitor for air conditioning systems

Publications (2)

Publication Number Publication Date
EP1866590A1 EP1866590A1 (en) 2007-12-19
EP1866590B1 true EP1866590B1 (en) 2008-06-04

Family

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Family Applications (2)

Application Number Title Priority Date Filing Date
EP05007069A Not-in-force EP1710529B1 (en) 2005-03-31 2005-03-31 Heat exchanger, in particular condenser for air conditioning
EP06706820A Not-in-force EP1866590B1 (en) 2005-03-31 2006-02-10 Heat exchanger, in particular condenser for air conditioning systems

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP05007069A Not-in-force EP1710529B1 (en) 2005-03-31 2005-03-31 Heat exchanger, in particular condenser for air conditioning

Country Status (7)

Country Link
US (1) US20090120628A1 (en)
EP (2) EP1710529B1 (en)
CN (1) CN101156042B (en)
AT (1) ATE397740T1 (en)
DE (2) DE502005003089D1 (en)
ES (1) ES2302089T3 (en)
WO (1) WO2006102951A1 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1930683B1 (en) * 2006-12-06 2009-03-11 Delphi Technologies, Inc. A pipe connecting structure for a heat exchanger
FR2962206B1 (en) * 2010-06-30 2014-12-19 Valeo Systemes Thermiques COLLECTOR FOR HEAT EXCHANGER AND HEAT EXCHANGER EQUIPPED WITH SUCH A MANIFOLD
CN103913093B (en) * 2014-01-29 2017-02-15 李军 Buckle cap and buckle of heating heat radiator
DE102017219182A1 (en) 2017-10-26 2019-05-02 Mahle International Gmbh Heat exchanger
CN110195946A (en) * 2019-05-27 2019-09-03 合肥铭尊精密科技有限公司 A kind of connection type of automotive air-conditioning condenser collector tube, pressing plate and pipeline
EP3816568A1 (en) * 2019-10-30 2021-05-05 Valeo Autosystemy SP. Z.O.O. Heat exchanger

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US1865444A (en) * 1931-07-17 1932-07-05 Chase Companies Inc Method of producing radiator units
US3349465A (en) * 1965-05-14 1967-10-31 United Aircraft Corp Tube-to-sheet joint making
US4025208A (en) * 1975-09-08 1977-05-24 Donahue Carroll F Clevis
DE4008063A1 (en) * 1990-03-14 1991-09-19 Behr Gmbh & Co HEAT EXCHANGER
DE4201791A1 (en) * 1991-06-20 1993-07-29 Thermal Waerme Kaelte Klima FLAT TUBES FOR INSTALLATION IN A FLAT TUBE HEAT EXCHANGER AND METHOD FOR SEPARATING THE FLAT TUBES
US5163716A (en) * 1991-10-25 1992-11-17 General Motors Corporation Condenser connector assembly for connecting refrigerant line
JP2541409B2 (en) * 1991-11-15 1996-10-09 日本電装株式会社 Heat exchanger
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JP3159805B2 (en) * 1992-10-12 2001-04-23 昭和アルミニウム株式会社 Heat exchanger
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US6030234A (en) * 1998-01-23 2000-02-29 Molex Incorporated Terminal pins mounted in flexible substrates
JP3959834B2 (en) * 1998-03-30 2007-08-15 株式会社デンソー Stacked heat exchanger
US6347663B1 (en) * 2000-03-13 2002-02-19 Modine Manufacturing Company Fitting/manifold assembly and method for a heat exchanger
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ATE334372T1 (en) * 2003-01-20 2006-08-15 Behr France Hambach Sarl HEAT EXCHANGER WITH CONNECTION FLANGE CONNECTED TO THE COLLECTION PIPE

Also Published As

Publication number Publication date
DE502006000885D1 (en) 2008-07-17
ATE397740T1 (en) 2008-06-15
EP1710529A1 (en) 2006-10-11
WO2006102951A1 (en) 2006-10-05
EP1866590A1 (en) 2007-12-19
CN101156042A (en) 2008-04-02
US20090120628A1 (en) 2009-05-14
EP1710529B1 (en) 2008-03-05
CN101156042B (en) 2010-10-13
ES2302089T3 (en) 2008-07-01
DE502005003089D1 (en) 2008-04-17

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