EP1118830B1 - Device for joining two heat exchangers - Google Patents

Device for joining two heat exchangers Download PDF

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Publication number
EP1118830B1
EP1118830B1 EP01100353A EP01100353A EP1118830B1 EP 1118830 B1 EP1118830 B1 EP 1118830B1 EP 01100353 A EP01100353 A EP 01100353A EP 01100353 A EP01100353 A EP 01100353A EP 1118830 B1 EP1118830 B1 EP 1118830B1
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EP
European Patent Office
Prior art keywords
heat exchanger
struts
supports
header
boxes
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP01100353A
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German (de)
French (fr)
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EP1118830A3 (en
EP1118830A2 (en
Inventor
Rainer Mangold
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.)
Modine Manufacturing Co
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Modine Manufacturing Co
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Publication date
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Publication of EP1118830A2 publication Critical patent/EP1118830A2/en
Publication of EP1118830A3 publication Critical patent/EP1118830A3/en
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Publication of EP1118830B1 publication Critical patent/EP1118830B1/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
    • F28F9/001—Casings in the form of plate-like arrangements; Frames enclosing a heat exchange core
    • F28F9/002—Casings in the form of plate-like arrangements; Frames enclosing a heat exchange core with fastening means for other structures
    • 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
    • F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
    • F28D1/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
    • F28D1/04—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits
    • F28D1/0408—Multi-circuit heat exchangers, e.g. integrating different heat exchange sections in the same unit or heat exchangers for more than two fluids
    • F28D1/0426—Multi-circuit heat exchangers, e.g. integrating different heat exchange sections in the same unit or heat exchangers for more than two fluids with units having particular arrangement relative to the large body of fluid, e.g. with interleaved units or with adjacent heat exchange units in common air flow or with units extending at an angle to each other or with units arranged around a central element
    • F28D1/0435—Combination of units extending one behind the other
    • 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
    • F28D2021/0082—Charged air coolers
    • 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

Definitions

  • the invention relates to a device for connecting two heat exchangers for motor vehicles, consisting of from lower supports on the header of the first heat exchanger, into the lower one Struts of the second heat exchanger engage and upper spring clips, one leg of which upper struts of the second heat exchanger after pressing the second heat exchanger reaches around the first heat exchanger in order to hold both heat exchangers elastically to one another.
  • the device is known from DE 198 57 508 A1, from which the following invention is based.
  • the Advantage of the known device is the fact that the assembly and disassembly of the heat exchanger can be done easily and quickly, namely by inserting the lower struts of the second Heat exchanger in the lower supports of the first heat exchanger and pressing the upper struts the second heat exchanger until they snap into the upper spring clip.
  • the in the known The spring clip used in the document is a part that is specially made for the purpose a leg in a molded on the header of a heat exchanger sleeve is and with the other leg a vertical force on the upper and lower struts of the other heat exchanger, or on the cooling network of this heat exchanger itself.
  • the cooling network the heat exchanger consisting of relatively thin-walled flat tubes and corrugated fins, is therefore there under a certain tension, which is disadvantageous.
  • the object of the invention is to design the device so that vertical clamping forces on the cooling network can be avoided without the simple assembly and disassembly essential is affected.
  • the lower supports the lower struts in her Hold in the longitudinal direction under a torsional tension in the elastic area and the upper struts attached to the header of the second heat exchanger and to the header of the first heat exchanger attached holder of the legs of the spring clips includes such and are held together to maintain the torsional stress in the lower struts.
  • Vertical bracing forces on the cooling network of the heat exchangers are avoided because of the bracing forces be absorbed by the struts under torsional stress and by the Spring clips, the spring force of which maintains the torsional tension in the struts.
  • the second heat exchanger To both heat exchangers To connect, the second heat exchanger with its lower struts in the lower U - shaped support, the second heat exchanger being slightly inclined to the first heat exchanger. Then the second heat exchanger connects to the first heat exchanger pressed up, whereby both heat exchangers are approximately parallel to each other and the upper struts rest on the brackets in order to then be embraced by the spring clips.
  • both heat exchangers are approximately parallel to each other and the upper struts rest on the brackets in order to then be embraced by the spring clips.
  • the lower ones experience the pressing of the second heat exchanger onto the first heat exchanger Struts have a torsional tension created by connecting the top struts and brackets using the Spring clips is maintained.
  • the struts are practically clamped in the U-shaped supports, however, the mobility for material expansion caused by temperature change preserved.
  • Claim 2 describes an advantageous embodiment of the holder, the upper struts and the spring clips. Thereafter it is provided that the upper struts have a slot into which one on the holder arranged pin engages. Furthermore, the spring clips have a straight and an approximately wave-shaped deformed leg to grasp the holder and strut. Because both legs of the one to be used Spring clips lie in one plane and encompass the strut and the holder together, the spring clips can be made simpler. The use of commercially available, standard This has made spring clips possible.
  • the holder has an approximately semicircular contour on its side facing away from the pin, so that the spring clip can encompass the holder with its wavy leg. At the end of wavy leg of the spring clip has the same an expansion, whereby the spring clip can be pushed over the semicircular contour of the holder without any tools can.
  • the header boxes of both heat exchangers are preferably made of aluminum. Furthermore, the Collection boxes of the first heat exchanger made of cast aluminum, the holder and the Supports are formed on the collection boxes.
  • the header boxes of the second heat exchanger are preferably made from a semi-finished aluminum product, for example from a tube, the struts be attached to these collecting boxes by soldering. The complete manufacture of the Aluminum heat exchangers ensure complete recycling and therefore complies with Demands for waste reduction.
  • Heat exchanger 1 is a heat exchanger 1, which is a charge air cooler of a motor vehicle, with a Heat exchanger 2, which is a condenser of the air conditioning system of the motor vehicle, connected.
  • the cooling air flows through the cooling network 3, 4 of both heat exchangers 1 and 2.
  • the header boxes 5 of the heat exchanger 1 are made of cast aluminum, so that the lower support 6 and the upper holder 7 are formed directly on a longitudinal wall 8 of the collecting boxes 5.
  • the collection boxes 9 des Heat exchanger 2 consist in principle of an aluminum tube, which is closed at the top and bottom is and on one long side has slots in which the ends of the heat exchanger tubes open. This has not been shown because such designs are typical for capacitors.
  • the lower supports 6 are U-shaped, the two legs 6a, 6b of the U in Extend the longitudinal direction of the collecting boxes 5.
  • the inner leg 6a has a thickening 6c or a nose that allows the struts 10u of the heat exchanger 2 to be used, however first so that its cooling network 4 is still at an angle to the cooling network 3 of the heat exchanger 1 located.
  • struts 10u against the mentioned lugs 6c pressed and thereby subjected to a torsional stress or by clamping in the U - shaped Support 6 held.
  • the torsional stress in the strut 10u is relatively low, but it is sufficient to effect the clamping of the struts 10u between the legs 6a and 6b of the supports 6, so that both heat exchangers 1 and 2 are held together reliably in the lower area and still allow thermal expansion.
  • Fig. 2 shows clearly that one against the Arrow 15 protruding nose 6c to larger torsional stresses and thus clamping forces in the struts 10u would lead.
  • the spring clip 14 has a straight leg 14a and a wave-shaped Leg 14b.
  • the holder 7 has an L-shaped shape.
  • the holder 7 is on one leg Collection box 5 molded.
  • the pin 13 is arranged, on the rear
  • An approximately semicircular contour 7a is present at the end.
  • the semicircular contour 7a fits approximately with the Rounding in the wavy leg 14b together so that the holder 7 and strut 100th pushed spring clip 14 a secure connection between the under all operating conditions two heat exchangers 1.2, which can be quickly assembled and disassembled.
  • a bend 16 has been formed around the spring clip To be able to push 14 from above over holder 7 and strut 10o.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Air-Conditioning For Vehicles (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Details Of Heat-Exchange And Heat-Transfer (AREA)
  • Clamps And Clips (AREA)
  • Compression-Type Refrigeration Machines With Reversible Cycles (AREA)
  • Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)

Abstract

The connector comprises lower stays (10u) of the second heat exchanger (2) engaging in lower support members (6) on the collecting box (5) of the first heat exchanger (1). These lower support members secure the stays under torsional stress in the elastic region. Upper stays (10o) fixed on the collecting box (9) of the second heat exchanger and holders (7) fixed on the box of the first exchanger are each surrounded and secured by the two arms (14a, 14b) of a spring clip (14) so that the torsion stresses remain in the stays to prevent vertical tensions from acting on the coolant network of the heat exchanger.

Description

Die Erfindung betrifft eine Vorrichtung zur Verbindung zweier Wärmetauscher für Kraftfahrzeuge, bestehend aus unteren Auflagern am Sammelkasten des ersten Wärmetauschers, in die untere Streben des zweiten Wärmetauschers eingreifen und aus oberen Federspangen, deren einer Schenkel obere Streben des zweiten Wärmetauschers nach dem Andrücken des zweiten Wärmetauschers an den ersten Wärmetauscher umgreift, um beide Wärmetauscher elastisch aneinander festzuhalten. Die Vorrichtung ist aus DE 198 57 508 A1 bekannt, von der die nachfolgende Erfindung ausgeht. Der Vorteil der bekannten Vorrichtung ist darin zu sehen, daß die Montage und Demontage der Wärmetauscher einfach und schnell erfolgen kann, nämlich durch Einsetzen der unteren Streben des zweiten Wärmetauschers in die unteren Auflager des ersten Wärmetauschers und Andrücken der oberen Streben des zweiten Wärmetauschers, bis sie in der oberen Federspange einrasten. Die in dem bekannten Dokument verwendete Federspange ist ein speziell für den Zweck anzufertigendes Teil, das mit seinem einen Schenkel in einer am Sammelkasten des einen Wärmetauschers angeformten Hülse gelagert ist und mit dem anderen Schenkel eine vertikale Kraft auf die oberen und unteren Streben des anderen Wärmetauschers, bzw. auf das Kühlnetz dieses Wärmetauschers selbst ausübt. Das Kühlnetz der Wärmetauscher, bestehend aus relativ dünnwandigen Flachrohren und Wellrippen, steht deshalb unter einen gewissen Verspannung, was nachteilig ist.The invention relates to a device for connecting two heat exchangers for motor vehicles, consisting of from lower supports on the header of the first heat exchanger, into the lower one Struts of the second heat exchanger engage and upper spring clips, one leg of which upper struts of the second heat exchanger after pressing the second heat exchanger reaches around the first heat exchanger in order to hold both heat exchangers elastically to one another. The device is known from DE 198 57 508 A1, from which the following invention is based. The Advantage of the known device is the fact that the assembly and disassembly of the heat exchanger can be done easily and quickly, namely by inserting the lower struts of the second Heat exchanger in the lower supports of the first heat exchanger and pressing the upper struts the second heat exchanger until they snap into the upper spring clip. The in the known The spring clip used in the document is a part that is specially made for the purpose a leg in a molded on the header of a heat exchanger sleeve is and with the other leg a vertical force on the upper and lower struts of the other heat exchanger, or on the cooling network of this heat exchanger itself. The cooling network the heat exchanger, consisting of relatively thin-walled flat tubes and corrugated fins, is therefore there under a certain tension, which is disadvantageous.

Weitere Dokumente, in denen Federspangen als Befestigungselemente für Wärmetauscher verwendet werden sind DE -OS- 2018459, EP 0 046 566 B1, DE - AS 25 57 967, DE 3814007 C1, DE 198 57 512 A1 und DE 198 57 494 A1. Die Vielzahl von Veröffentlichungen macht deutlich, daß Federspangen als Befestigungselemente für Wärmetauscher recht weit verbreitet sind.Other documents in which spring clips are used as fasteners for heat exchangers are DE -OS- 2018459, EP 0 046 566 B1, DE - AS 25 57 967, DE 3814007 C1, DE 198 57 512 A1 and DE 198 57 494 A1. The large number of publications makes it clear that spring clips as Fasteners for heat exchangers are quite common.

Die Aufgabe der Erfindung besteht darin, die Vorrichtung so auszubilden, daß vertikale Verspannkräfte auf das Kühlnetz vermieden werden können, ohne daß die einfache Montage und Demontage wesentlich beeinträchtigt wird.The object of the invention is to design the device so that vertical clamping forces on the cooling network can be avoided without the simple assembly and disassembly essential is affected.

Erfindungsgemäß ist vorgesehen, daß die unteren Auflager die unteren Streben in ihrer Längsrichtung unter einer Torsionsspannung im elastischen Bereich festhalten und die oberen am Sammelkasten des zweiten Wärmetauschers befestigten Streben und am Sammelkasten des ersten Wärmetauschers befestigte Halter von den Schenkeln der Federspangen derart umfaßt und zusammengehalten sind, daß sie die Torsionsspannung in den unteren Streben aufrechterhalten. Vertikale Verspannkräfte auf das Kühlnetz der Wärmetauscher werden vermieden, weil die Verspannkräfte durch die unter Torsionsspannung stehenden Streben aufgenommen werden und durch die Federspangen, deren Federkraft die Torsionsspannung in den Streben aufrechterhält. Um beide Wärmetauscher zu verbinden, wird zunächst der zweite Wärmetauscher mit seinen unteren Streben in die unteren U - förmigen Auflager eingesetzt, wobei der zweite Wärmetauscher eine leichte Schräglage zum ersten Wärmetauscher aufweist. Dann wird der zweite Wärmetauscher an den ersten Wärmetauscher oben herangedrückt, wodurch beide Wärmetauscher etwa parallel zueinander liegen und die oberen Streben an den Haltern anliegen, um dann mittels der Federspangen umfaßt zu werden. Durch das Andrücken des zweiten Wärmetauschers an den ersten Wärmetauscher erfahren die unteren Streben eine Torsionsspannung, die durch die Verbindung der oberen Streben und Halter mittels der Federspangen aufrechterhalten wird. Die Streben sind praktisch in den U - förmigen Auflagern eingeklemmt, wobei jedoch die Beweglichkeit für durch Temperaturänderung bewirkte Materialdehnungen erhalten bleibt. Auch zwischen Schlitz und Stift (Anspruch 2) ist ausreichend Spielraum vorhanden, damit die Wärmeausdehnung der Wärmeaustauscher ermöglicht wird. Diese Art der Befestigung erfüllt auch hinsichtlich des Aufwandes für Montage und Demontage die gestellte Aufgabe, denn sie ist äußerst einfach auszuführen, wie aus der vorstehenden Beschreibung zu entnehmen ist.According to the invention it is provided that the lower supports the lower struts in her Hold in the longitudinal direction under a torsional tension in the elastic area and the upper struts attached to the header of the second heat exchanger and to the header of the first heat exchanger attached holder of the legs of the spring clips includes such and are held together to maintain the torsional stress in the lower struts. Vertical bracing forces on the cooling network of the heat exchangers are avoided because of the bracing forces be absorbed by the struts under torsional stress and by the Spring clips, the spring force of which maintains the torsional tension in the struts. To both heat exchangers To connect, the second heat exchanger with its lower struts in the lower U - shaped support, the second heat exchanger being slightly inclined to the first heat exchanger. Then the second heat exchanger connects to the first heat exchanger pressed up, whereby both heat exchangers are approximately parallel to each other and the upper struts rest on the brackets in order to then be embraced by the spring clips. By the lower ones experience the pressing of the second heat exchanger onto the first heat exchanger Struts have a torsional tension created by connecting the top struts and brackets using the Spring clips is maintained. The struts are practically clamped in the U-shaped supports, however, the mobility for material expansion caused by temperature change preserved. There is also sufficient scope between the slot and the pin (claim 2), so that the thermal expansion of the heat exchanger is made possible. This type of attachment met the task also with regard to the effort for assembly and disassembly, because it is extreme easy to perform, as can be seen from the above description.

Anspruch 2 beschreibt eine vorteilhafte Ausbildung der Halter, der oberen Streben und der Federspangen. Danach ist vorgesehen, daß die oberen Streben einen Schlitz aufweisen, in den ein am Halter angeordneter Stift eingreift. Ferner besitzen die Federspangen einen geraden und einen etwa wellenförmig verformten Schenkel, um Halter und Strebe zu umgreifen. Weil beide Schenkel der zu verwendenden Federspangen in einer Ebene liegen und die Strebe und den Halter gemeinsam umgreifen, können die Federspangen einfacher ausgebildet sein. Der Einsatz von handelsüblichen, standardmäßigen Federspangen ist damit möglich geworden.Claim 2 describes an advantageous embodiment of the holder, the upper struts and the spring clips. Thereafter it is provided that the upper struts have a slot into which one on the holder arranged pin engages. Furthermore, the spring clips have a straight and an approximately wave-shaped deformed leg to grasp the holder and strut. Because both legs of the one to be used Spring clips lie in one plane and encompass the strut and the holder together, the spring clips can be made simpler. The use of commercially available, standard This has made spring clips possible.

Der Halter besitzt an seiner vom Stift abgekehrten Seite eine etwa halbrunde Kontur, so daß die Federspange mit ihrem wellenförmigen Schenkel den Halter schlüssig umgreifen kann. Am Ende des wellenförmigen Schenkels der Federklammer besitzt dieselbe eine Aufweitung, wodurch die Federklammer ohne Hilfe irgendwelcher Werkzeuge über die halbrunde Kontur des Halters geschoben werden kann.The holder has an approximately semicircular contour on its side facing away from the pin, so that the spring clip can encompass the holder with its wavy leg. At the end of wavy leg of the spring clip has the same an expansion, whereby the spring clip can be pushed over the semicircular contour of the holder without any tools can.

Vorzugsweise bestehen die Sammelkästen beider Wärmetauscher aus Aluminium. Weiterhin sind die Sammelkästen des ersten Wärmetauschers aus Aluminiumguß hergestellt, wobei die Halter und die Auflager an die Sammelkästen angeformt sind. Die Sammelkästen des zweiten Wärmetauschers sind bevorzugt aus einem Aluminiumhalbzeug, beispielsweise aus einem Rohr hergestellt, wobei die Streben mittels Löten an diesen Sammelkästen befestigt werden. Die somit komplette Herstellung der Wärmetauscher aus Aluminium gewährleistet das vollständige Recycling und entspricht deshalb den Forderungen nach Reduzierung des Abfalls.The header boxes of both heat exchangers are preferably made of aluminum. Furthermore, the Collection boxes of the first heat exchanger made of cast aluminum, the holder and the Supports are formed on the collection boxes. The header boxes of the second heat exchanger are preferably made from a semi-finished aluminum product, for example from a tube, the struts be attached to these collecting boxes by soldering. The complete manufacture of the Aluminum heat exchangers ensure complete recycling and therefore complies with Demands for waste reduction.

Weitere Merkmale ergeben sich aus den Ansprüchen. Ferner gehen Merkmale und Vorteile aus der folgenden Beschreibung eines Ausführungsbeispieles hervor.Further features result from the claims. Furthermore, features and advantages go out of the following description of an embodiment.

Die beiliegenden Figuren zeigen:

  • Fig. 1 Teil einer Perspektivansicht zweier Wärmetauscher, die mittels der Vorrichtung verbunden sind;
  • Fig. 2 ein unteres Auflager mit eingesetzter Strebe;
  • Fig. 3 Halter mit Strebe und Federspange;
    • The attached figures show:
  • 1 part of a perspective view of two heat exchangers which are connected by means of the device;
  • 2 shows a lower support with an inserted strut;
  • Fig. 3 holder with strut and spring clip;

    • Gemäß Fig. 1 ist ein Wärmetauscher 1, der ein Ladeluftkühler eines Kraftfahrzeuges ist, mit einem Wärmetauscher 2, der einen Kondensator der Klimaanlage des Kraftfahrzeuges darstellt, verbunden. Durch das Kühlnetz 3, 4 beider Wärmetauscher 1 und 2 strömt die Kühlluft hindurch. Es wurde nur eine Seite der Vorrichtung dargestellt. Die andere Seite ist identisch. Die Sammelkästen 5 des Wärmetauschers 1 sind aus Aluminiumguß hergestellt, so daß die unteren Auflager 6 und die oberen Halter 7 direkt an einer Längswand 8 der Sammelkästen 5 angeformt sind. Die Sammelkästen 9 des Wärmetauschers 2 bestehen im Prinzip aus einem Aluminiumrohr, das oben und unten verschlossen ist und an der einen Längsseite Schlitze aufweist, in denen die Enden der Wärmetauscherrohre münden. Dies ist nicht dargestellt worden, weil solche Ausbildungen für Kondensatoren typisch sind. An diesen Sammelkästen 9 sind je zwei Streben 10o, 10u befestigt worden, die einen etwa halbrunden Fuß 11 aufweisen, der passend an den runden Sammelkästen 9 anliegt und mittels Löten verbunden ist. Die unteren Auflager 6 sind U - förmig ausgebildet, wobei sich die beiden Schenkel 6a, 6b des U in Längsrichtung der Sammelkästen 5 erstrecken. Der innen liegende Schenkel 6a besitzt eine Verdikkung 6c bzw. eine Nase, die es zuläßt, die Streben 10u des Wärmetauschers 2 einzusetzen, jedoch zunächst so, daß sein Kühlnetz 4 sich noch in einer Schräge zum Kühlnetz 3 des Wärmetauschers 1 befindet. Durch Andrücken des zweiten Wärmetauschers 2 an den ersten Wärmetauscher 1, in Richtung des in Fig. 2 eingezeichneten Pfeiles 15, werden die Streben 10u gegen die erwähnten Nasen 6c gedrückt und dadurch einer Torsionsspannung unterworfen bzw. durch Einklemmen in den U - förmigen Auflagern 6 gehalten. Die Torsionsspannung in der Strebe 10u ist relativ gering, sie reicht jedoch aus, um das Einklemmen der Streben 10u zwischen Schenkeln 6a und 6b der Auflager 6 zu bewerkstelligen, so daß beide Wärmetauscher 1 und 2 im unteren Bereich betriebssicher zusammengehalten werden und trotzdem Wärmedehnungen zulassen. Fig. 2 zeigt anschaulich, daß eine weiter gegen den Pfeil 15 vorstehende Nase 6c zu größeren Torsionsspannungen und damit Klemmkräften in den Streben 10u führen würde. In dieser Stellung, in der beide Kühlnetze 3, 4 der Wärmetauscher 1 und 2 etwa parallel zueinander sind, befinden sich die oberen Streben 10o, die einen Schlitz 12 aufweisen, mit demselben in Berührung mit den oberen Haltern 7. (Fig. 1) An den oberen Haltern 7 ist jeweils ein Stift 13 angeordnet, der durch den Schlitz 12 hindurchgeht. Der Stift 13 hat im Schlitz 12 in Längs - und Querrichtung ausreichendes Spiel, um die Wärmedehnung zuzulassen und um sicherzustellen, daß die Verbindung unter Betriebsbedingungen im Fahrzeug die notwendige Sicherheit aufweist.1 is a heat exchanger 1, which is a charge air cooler of a motor vehicle, with a Heat exchanger 2, which is a condenser of the air conditioning system of the motor vehicle, connected. The cooling air flows through the cooling network 3, 4 of both heat exchangers 1 and 2. It just became one side of the device is shown. The other side is identical. The header boxes 5 of the heat exchanger 1 are made of cast aluminum, so that the lower support 6 and the upper holder 7 are formed directly on a longitudinal wall 8 of the collecting boxes 5. The collection boxes 9 des Heat exchanger 2 consist in principle of an aluminum tube, which is closed at the top and bottom is and on one long side has slots in which the ends of the heat exchanger tubes open. This has not been shown because such designs are typical for capacitors. On These collecting boxes 9 each have two struts 10o, 10u fastened, one approximately semicircular Have foot 11, which fits snugly against the round header boxes 9 and connected by soldering is. The lower supports 6 are U-shaped, the two legs 6a, 6b of the U in Extend the longitudinal direction of the collecting boxes 5. The inner leg 6a has a thickening 6c or a nose that allows the struts 10u of the heat exchanger 2 to be used, however first so that its cooling network 4 is still at an angle to the cooling network 3 of the heat exchanger 1 located. By pressing the second heat exchanger 2 against the first heat exchanger 1 in the direction of the arrow 15 shown in FIG. 2, the struts 10u against the mentioned lugs 6c pressed and thereby subjected to a torsional stress or by clamping in the U - shaped Support 6 held. The torsional stress in the strut 10u is relatively low, but it is sufficient to effect the clamping of the struts 10u between the legs 6a and 6b of the supports 6, so that both heat exchangers 1 and 2 are held together reliably in the lower area and still allow thermal expansion. Fig. 2 shows clearly that one against the Arrow 15 protruding nose 6c to larger torsional stresses and thus clamping forces in the struts 10u would lead. In this position, in which both cooling networks 3, 4 of the heat exchangers 1 and 2 approximately are parallel to each other, the upper struts 10o, which have a slot 12, with the same in contact with the upper holders 7. (Fig. 1) On the upper holders 7 is a pin 13 arranged, which passes through the slot 12. The pin 13 has in the slot 12 in longitudinal and Transverse direction sufficient play to allow thermal expansion and to ensure that the connection has the necessary safety under operating conditions in the vehicle.

    Wie die Fig. 3 zeigt, hat die Federspange 14 einen geraden Schenkel 14a und einen wellenförmigen Schenkel 14b. Der Halter 7 hat eine L-förmige Gestalt. Mit dem einen Schenkel ist der Halter 7 am Sammelkasten 5 angeformt. Am anderen Schenkel ist der Stift 13 angeordnet, an dessen rückwärtigem Ende eine etwa halbrunde Kontur 7a vorhanden ist. Die halbrunde Kontur 7a paßt in etwa mit der Rundung im wellenförmigen Schenkel 14b zusammen, so daß die über den Halter 7 und Strebe 100 geschobene Federspange 14 unter allen Betriebsbedingungen eine sichere Verbindung zwischen den zwei Wärmetauschem 1,2 darstellt, die schnell montiert und demontiert werden kann. Am unteren Ende des wellenförmigen Schenkels 14b ist eine Aufbiegung 16 angeformt worden, um die Federspange 14 von oben über Halter 7 und Strebe 10o schieben zu können.3 shows, the spring clip 14 has a straight leg 14a and a wave-shaped Leg 14b. The holder 7 has an L-shaped shape. The holder 7 is on one leg Collection box 5 molded. On the other leg, the pin 13 is arranged, on the rear An approximately semicircular contour 7a is present at the end. The semicircular contour 7a fits approximately with the Rounding in the wavy leg 14b together so that the holder 7 and strut 100th pushed spring clip 14 a secure connection between the under all operating conditions two heat exchangers 1.2, which can be quickly assembled and disassembled. At the bottom At the end of the wave-shaped leg 14b, a bend 16 has been formed around the spring clip To be able to push 14 from above over holder 7 and strut 10o.

    Claims (7)

    1. Device for the connection of two heat exchangers (1, 2) for motor vehicles, consisting of lower supports (6) on the header box (5) of the first heat exchanger (1), into which supports lower struts (10u) of the second heat exchanger (2) engage, and of upper two-limbed spring clips (14), one limb of which engages round upper struts (10o) of the second heat exchanger (2) after the second heat exchanger (2) has been pressed onto the first heat exchanger (1), in order to retain the two heat exchangers (1, 2) elastically against one another, characterized in that the lower supports (6) retain the lower struts (10u) under torsional stress in the elastic range, and in that the upper struts (10o) fastened to the header box (9) of the second heat exchanger (2) and holders (7) fastened to the header box (9) of the first heat exchanger (1) are surrounded and held together by the limbs (14a, 14b) of the spring clips (14), in such a way that the torsional stress in the lower struts (10u) is maintained.
    2. Device according to Claim 1, characterized in that the upper struts (10o) on the first heat exchanger (1) have a slot (12), into which a pin (13) of the holder (7) engages, and the spring clip (14) possesses an essentially straight limb (14a), which engages over one side of the strut (10o), and a limb (14b) of essentially wavy shape, which engages round the other side of the strut (10o) and that side of the holder (7) which faces away from the pin (13), the two limbs (14a, 14b) lying in one plane.
    3. Device according to the preceding claims, characterized in that the side facing away from the pin (13) of the holder (7) has an approximately semicircular contour (7a) which is surrounded approximately by the limb (14b) of wavy shape of the spring clip (14).
    4. Device according to Claim 1, characterized in that the supports (6) have an approximately U-shaped cross section and are fastened to the longitudinal walls (8) of the header boxes (5) in such a way that the two limbs (6a, 6b) of the U extend in the longitudinal direction of the respective header box (5), one of the limbs (6a) having a thickening (6c), against which in each case a strut (10u) comes to bear when the second heat exchanger (2) is pressed onto the first heat exchanger (1), in order to absorb a torsional stress in the longitudinal direction of said strut and to be clamped in the supports (6).
    5. Device according to one of the preceding claims, characterized in that the header boxes (5, 9) of the first and second heat exchanger (1, 2) consist of aluminium, and the holders (7), the struts (10) and the supports (6) are likewise made of aluminium.
    6. Device according to Claim 5, characterized in that the header boxes (9) of the second heat exchanger (2) are manufactured from a semi-finished product, and the struts (10) are soldered to these header boxes (9), and also the header boxes (5) of the first heat exchanger are produced as a cast aluminium product and the supports (6) and holders (7) are manufactured in one piece with these header boxes (5).
    7. Device according to Claim 5, characterized in that the two header boxes (5, 9) are manufactured from an aluminium semi-finished product, and the struts (10), holders (7) and supports (6) are soldered as individual parts to the header boxes.
    EP01100353A 2000-01-22 2001-01-05 Device for joining two heat exchangers Expired - Lifetime EP1118830B1 (en)

    Applications Claiming Priority (2)

    Application Number Priority Date Filing Date Title
    DE10002745A DE10002745A1 (en) 2000-01-22 2000-01-22 Device for connecting two heat exchangers
    DE10002745 2000-01-22

    Publications (3)

    Publication Number Publication Date
    EP1118830A2 EP1118830A2 (en) 2001-07-25
    EP1118830A3 EP1118830A3 (en) 2002-01-30
    EP1118830B1 true EP1118830B1 (en) 2002-11-27

    Family

    ID=7628434

    Family Applications (1)

    Application Number Title Priority Date Filing Date
    EP01100353A Expired - Lifetime EP1118830B1 (en) 2000-01-22 2001-01-05 Device for joining two heat exchangers

    Country Status (5)

    Country Link
    US (1) US6527044B2 (en)
    EP (1) EP1118830B1 (en)
    AT (1) ATE228638T1 (en)
    DE (2) DE10002745A1 (en)
    ES (1) ES2187486T3 (en)

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    Also Published As

    Publication number Publication date
    US6527044B2 (en) 2003-03-04
    DE50100060D1 (en) 2003-01-09
    US20010013405A1 (en) 2001-08-16
    ES2187486T3 (en) 2003-06-16
    EP1118830A3 (en) 2002-01-30
    EP1118830A2 (en) 2001-07-25
    DE10002745A1 (en) 2001-07-26
    ATE228638T1 (en) 2002-12-15

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