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EP1867945A1 - Heat exchanger with bonded header tank - Google Patents

Heat exchanger with bonded header tank Download PDF

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Publication number
EP1867945A1
EP1867945A1 EP07010412A EP07010412A EP1867945A1 EP 1867945 A1 EP1867945 A1 EP 1867945A1 EP 07010412 A EP07010412 A EP 07010412A EP 07010412 A EP07010412 A EP 07010412A EP 1867945 A1 EP1867945 A1 EP 1867945A1
Authority
EP
European Patent Office
Prior art keywords
heat exchanger
box
bottom element
exchanger according
collar
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.)
Withdrawn
Application number
EP07010412A
Other languages
German (de)
French (fr)
Inventor
Dieter Gross
Volker Kurz
Marcus Schöll
Martin Wagner
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 GmbH and Co KG
Original Assignee
Behr GmbH and Co KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Behr GmbH and Co KG filed Critical Behr GmbH and Co KG
Publication of EP1867945A1 publication Critical patent/EP1867945A1/en
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • F28D1/053—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 the conduits being straight
    • F28D1/0535—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 the conduits being straight the conduits having a non-circular cross-section
    • F28D1/05366—Assemblies of conduits connected to common headers, e.g. core type radiators
    • 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
    • F28F9/0219—Arrangements for sealing end plates into casing or header box; Header box sub-elements
    • F28F9/0224—Header boxes formed by sealing end plates into covers
    • 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
    • F28D2021/0091—Radiators
    • F28D2021/0094—Radiators for recooling the engine coolant
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F21/00—Constructions of heat-exchange apparatus characterised by the selection of particular materials
    • F28F21/06—Constructions of heat-exchange apparatus characterised by the selection of particular materials of plastics material
    • F28F21/062—Constructions of heat-exchange apparatus characterised by the selection of particular materials of plastics material the heat-exchange apparatus employing tubular conduits
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F21/00—Constructions of heat-exchange apparatus characterised by the selection of particular materials
    • F28F21/08—Constructions of heat-exchange apparatus characterised by the selection of particular materials of metal
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2275/00—Fastening; Joining
    • F28F2275/02—Fastening; Joining by using bonding materials; by embedding elements in particular materials
    • F28F2275/025—Fastening; Joining by using bonding materials; by embedding elements in particular materials by using adhesives
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2275/00—Fastening; Joining
    • F28F2275/08—Fastening; Joining by clamping or clipping
    • F28F2275/085—Fastening; Joining by clamping or clipping with snap connection
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2275/00—Fastening; Joining
    • F28F2275/14—Fastening; Joining by using form fitting connection, e.g. with tongue and groove
    • F28F2275/143—Fastening; Joining by using form fitting connection, e.g. with tongue and groove with pin and hole connections

Definitions

  • the invention relates to a heat exchanger, in particular for a motor vehicle, according to the preamble of claim 1.
  • the bonding of the bottom element with the box is coolant-tight, in particular, no further seal between the bottom element and the box is provided.
  • the bonding exercises at the same time holding as well as sealing functions, so that costs and space can be saved in a particularly effective manner.
  • the bottom element is made of an aluminum alloy.
  • the box consists of a plastic, in particular a polyamide.
  • a collar of the bottom element is arranged between two legs of the box.
  • a simple and secure bonding can be achieved even with automated production, wherein at the same time in a small space, a high compressive strength of the compound despite relatively low material thicknesses can be achieved.
  • an adhesive of the bond between an end face of the collar and a bottom surface of the box located between the legs is arranged.
  • the adhesive of the bond between a side surface of the collar and a side surface of at least one of the legs is arranged.
  • the assembly of the box is preferably made possible by appropriate insertion bevels on both legs of the box bottom.
  • a secure engagement of the knob is achieved in the bottom part with the corresponding shape in the outer leg of the box.
  • a projection is arranged on at least one of the two, bottom element or box, and at the respectively other of the two a recess associated with the projection, wherein the projection engages positively in the recess in an assembled state.
  • This is a mechanical connection of floor element and box provided in the manner of a latching, which ensures on the one hand additional mechanical stability and on the other in the course of manufacturing a secure fixation during curing of the adhesive, without further means for supporting the bottom element and box during the curing of the adhesive are required.
  • the projection is formed as a bulge in a collar of the bottom element, which can be produced in a simple manner, for example by an impression in a wall of the bottom element in the course of the formation of the bottom element.
  • the bottom element is preferably a sheet metal part produced by means of punching and bending. As a result, the bottom element is particularly inexpensive to produce.
  • the bond comprises an adhesive based on epoxy resin.
  • epoxy resin adhesive particularly well meet the thermal, corrosive, chemical and mechanical requirements at the site of the bond in question.
  • the heat exchanger is a main cooler for an internal combustion engine of a motor vehicle.
  • the solution according to the invention of a heat exchanger offers particular advantages over the prior art.
  • a bevel is also attached to the inner sides of the box legs.
  • the invention further relates to a motor vehicle having a heat exchanger according to one of claims 1 to 13.
  • the heat exchanger comprises a plurality of flat tubes designed as parallel exchanger tubes 1. Between the exchanger tubes 1 each cooling fins are arranged, which are flowed around by cooling air and improve the heat exchanger performance.
  • the flat tubes 1 are flowed through by a liquid coolant of a main engine of a motor vehicle, so that the heat of the coolant will be released to the cooling outside air.
  • the exchanger tubes 1 consist of an aluminum alloy. At the end they each open into a bottom element 3.
  • the bottom elements 3 are produced as shaped parts from sheets of aluminum alloy by means of punching and bending.
  • the exchanger tubes 1 pass through their respective associated punched holes in the bottom element 3 and are soldered in the region of the punched-outs with the bottom element 3 in a coolant-tight manner.
  • the bottom elements have a substantially U-shaped cross-section with a flat bottom part of the U, which is penetrated by the exchanger tubes 1.
  • the lateral legs 3a, 3b of the U-shaped cross-section belong to a peripheral collar of the bottom element 3 and are each in corresponding formations of a respective box 4th used the heat exchanger.
  • the boxes 4 are made of a glass fiber reinforced polyamide.
  • the formations of the boxes 4 for receiving the collar or the legs 3a, 3b of the bottom member 3 in cross-section respectively two legs 4a, 4b, between which the respective leg 3b of the bottom element 3 is inserted.
  • a recess 5 is provided, which corresponds in the assembled state with a knob or a circumferential protuberance 6 of the leg 3b of the bottom element 3.
  • leg 3b in the course of insertion into the recess between the legs 4a, 4b of the box 4 with its nub 6 initially abuts a bevelled edge 8 of the leg 4b, whereby the leg 4b of the box elastic is bent on the outside. The end portion of the leg 3b then abuts a chamfer 9 of the other box leg 4a, which is elastically bent in the opposite direction.
  • the nub 6 can engage in the recess 5 of the leg 4b, there is an elastic deformation of the leg 4b of the box, after which the nub 6 engages in the recess 5 in the sense of a latching and the legs 3b mechanically between the legs 4a, 4b supports.
  • the leg 3b of the bottom element 3 may have a resilient deformability in order to lock the box 4. Any suitable type of detent geometry can be used at this point.
  • the leg 3b of the bottom member 3 at its end a convex formation 12, which is preferably designed round or pointed.
  • the shape is geometrically adapted to the recess between the legs 4a, 4b of the box 4, that the gap between the box and the bottom element in this area a substantially uniform width having. This will allow for improved drainage of the adhesive and may reduce or eliminate trapped air.
  • an adhesive based on epoxy resin was preferably applied either to the collar 3b or into the intermediate space between the legs 4a, 4b or both prior to the insertion of the collar 3b.
  • the adhesive 10 is provided only on one end face of the collar 3b, whereby only a small amount of adhesive is required. But it can also be used an amount of adhesive, which also causes a surface sticking of the sides of the collar 3b on the opposite surfaces of the legs 4a, 4b, so that a particularly large-area and secure bonding is given.

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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)

Abstract

The heat exchanger has exchanger tubes (1) that are flowed through by a cooling medium and an air flow for cooling the cooling medium, and cooling fins arranged between the exchanger tubes. The exchanger tubes are fastened to a base unit (3), and a case (4) is glued to the base unit in a cooling medium-leak proof manner by an adhesive. A hollow space for guiding the cooling medium is formed by the base unit and the case, where the base unit is made from a non-ferrous metal or aluminum alloy and the case is made of plastic e.g. polyamide.

Description

Die Erfindung betrifft einen Wärmetauscher, insbesondere für ein Kraftfahrzeug, nach dem Oberbegriff des Anspruchs 1.The invention relates to a heat exchanger, in particular for a motor vehicle, according to the preamble of claim 1.

Aus der Praxis des Baus von Wärmetauschern für Kraftfahrzeuge ist es bekannt, ein zumeist aus Metall bestehendes Bodenelement, in welchem Tauscherrohre münden, mit einem Wärmetauscherkasten aus Kunststoff zu verbinden, wobei zur Abdichtung zwischen Bodenelement und Kasten eine Gummidichtung eingelegt ist. Neben den Kosten für eine solche speziell geformte Dichtung besteht ein hoher Fertigungsaufwand, da lediglich eine manuelle Montage eine zuverlässige Platzierung der Dichtung ermöglicht.From the practice of the construction of heat exchangers for motor vehicles, it is known to connect a mostly metal existing floor element in which exchanger tubes open, with a heat exchanger box made of plastic, wherein a rubber seal is inserted for sealing between the bottom element and box. In addition to the cost of such a specially shaped seal there is a high production cost, since only a manual assembly allows reliable placement of the seal.

Es ist die Aufgabe der Erfindung, einen Wärmetauscher anzugeben, bei dem die Verbindung von Bodenelement und Kasten auf einfache, sichere und kostengünstige Weise gewährleistet ist.It is the object of the invention to provide a heat exchanger in which the connection of floor element and box is ensured in a simple, safe and cost-effective manner.

Diese Aufgabe wird für einen eingangs genannten Wärmetauscher erfindungsgemäß mit den kennzeichnenden Merkmalen des Anspruchs 1 gelöst. Durch die Verklebung von Bodenelement und Kasten werden verbesserte Haltekräfte erreicht und einer Automatisierung der Montage Vorschub geleistet. Zudem können die erforderlichen Bauräume im Bereich der Verbindung verkleinert werden, was gerade bei den steigenden Anforderungen an For men und Bauraumgröße von Kühlmittelkühlem in Kraftfahrzeugen vorteilhaft ist.This object is achieved according to the invention for a heat exchanger mentioned above with the characterizing features of claim 1. The bonding of floor element and box improved holding forces are achieved and made an automation of assembly feed. In addition, the required installation space in the area of the connection can be reduced, which is especially the increasing demands on For men and space size of Kühlmittelkühlem in motor vehicles is advantageous.

In besonders bevorzugter Ausführung ist die Verklebung des Bodenelementes mit dem Kasten kühlmitteldicht, wobei insbesondere keine weitere Dichtung zwischen Bodenelement und Kasten vorgesehen ist. Hierbei übemimmt die Verklebung zugleich haltende wie auch dichtende Funktionen, so dass Kosten und Bauraum auf besonders effektive Weise eingespart werden.In a particularly preferred embodiment, the bonding of the bottom element with the box is coolant-tight, in particular, no further seal between the bottom element and the box is provided. Here, the bonding exercises at the same time holding as well as sealing functions, so that costs and space can be saved in a particularly effective manner.

Allgemein bevorzugt besteht das Bodenelement aus einer Aluminiumlegierung. Weiterhin vorteilhaft besteht der Kasten aus einem Kunststoff, insbesondere einem Polyamid. Diese Materialpaarungen haben sich hinsichtlich Kosten, Gewicht und Bauraum bei Hauptkühlem für Kraftfahrzeuge auf besondere Weise bewährt.Generally, the bottom element is made of an aluminum alloy. Further advantageously, the box consists of a plastic, in particular a polyamide. These material combinations have proven themselves in terms of cost, weight and space in Hauptkühlem for motor vehicles in a special way.

In einer bevorzugten Ausführungsform ist ein Kragen des Bodenelementes zwischen zwei Schenkeln des Kastens angeordnet. Hierdurch lässt sich eine einfache und sichere Verklebung auch bei automatisierter Herstellung erreichen, wobei zugleich bei kleinem Bauraum eine hohe Druckfestigkeit der Verbindung trotz relativ geringer Materialstärken erzielbar ist. Bevorzugt ist ein Klebstoff der Verklebung zwischen einer Stirnfläche des Kragens und einer zwischen den Schenkeln befindlichen Bodenfläche des Kastens angeordnet. Alternativ oder ergänzend ist der Klebstoff der Verklebung zwischen einer Seitenfläche des Kragens und einer Seitenfläche zumindest eines der Schenkel angeordnet. Die Montage des Kastens wird vorzugsweise durch entsprechende Einführschrägen an beiden Schenkeln des Kastenbodens ermöglicht. Darüber hinaus wird dadurch unter Umständen ein sicheres Einrasten der Noppe ins Bodenteil mit der korrespondierenden Ausformung im äußeren Schenkel des Kastens erreicht.In a preferred embodiment, a collar of the bottom element is arranged between two legs of the box. In this way, a simple and secure bonding can be achieved even with automated production, wherein at the same time in a small space, a high compressive strength of the compound despite relatively low material thicknesses can be achieved. Preferably, an adhesive of the bond between an end face of the collar and a bottom surface of the box located between the legs is arranged. Alternatively or additionally, the adhesive of the bond between a side surface of the collar and a side surface of at least one of the legs is arranged. The assembly of the box is preferably made possible by appropriate insertion bevels on both legs of the box bottom. In addition, under certain circumstances, a secure engagement of the knob is achieved in the bottom part with the corresponding shape in the outer leg of the box.

In bevorzugter Ausführung ist an zumindest einem der beiden, Bodenelement oder Kasten, ein Vorsprung angeordnet und an dem jeweils anderen der beiden eine dem Vorsprung zugeordnete Ausnehmung, wobei der Vorsprung in einem zusammengebauten Zustand formschlüssig in die Ausnehmung eingreift. Hierdurch ist eine mechanische Verbindung von Bodenelement und Kasten nach Art einer Einrastung bereitgestellt, die zum einen eine zusätzliche mechanische Stabilität gewährleistet und zum anderen im Zuge der Herstellung eine sichere Fixierung während einer Aushärtung des Klebers, ohne dass weitere Mittel zur Halterung von Bodenelement und Kasten während der Aushärtung des Klebers erforderlich sind. Besonders vorteilhaft ist dabei der Vorsprung als Ausbuchtung in einem Kragen des Bodenelements ausgebildet, was auf einfache Weise zum Beispiel durch eine Einprägung in eine Wandung des Bodenelements im Zuge der Ausformung des Bodenelements herstellbar ist.In a preferred embodiment, a projection is arranged on at least one of the two, bottom element or box, and at the respectively other of the two a recess associated with the projection, wherein the projection engages positively in the recess in an assembled state. This is a mechanical connection of floor element and box provided in the manner of a latching, which ensures on the one hand additional mechanical stability and on the other in the course of manufacturing a secure fixation during curing of the adhesive, without further means for supporting the bottom element and box during the curing of the adhesive are required. Particularly advantageously, the projection is formed as a bulge in a collar of the bottom element, which can be produced in a simple manner, for example by an impression in a wall of the bottom element in the course of the formation of the bottom element.

Allgemein bevorzugt ist das Bodenelement ein insbesondere mittels Stanzung und Biegung hergestelltes Blechformteil. Hierdurch ist das Bodenelement besonders kostengünstig herstellbar.Generally, the bottom element is preferably a sheet metal part produced by means of punching and bending. As a result, the bottom element is particularly inexpensive to produce.

In vorteilhafter Ausführung umfasst die Verklebung einen Klebstoff auf Epoxidharzbasis. Versuche haben gezeigt, dass Epoxidharzkleber den thermischen, korrosiven, chemischen und mechanischen Anforderungen an der Stelle der fraglichen Verklebung besonders gut genügen.In an advantageous embodiment, the bond comprises an adhesive based on epoxy resin. Experiments have shown that epoxy resin adhesive particularly well meet the thermal, corrosive, chemical and mechanical requirements at the site of the bond in question.

Allgemein bevorzugt ist der Wärmetauscher ein Hauptkühler für einen Verbrennungsmotor eines Kraftfahrzeugs. Bei dieser Art von Bauteilen ist wie in vielen Fällen der Großserienfertigung von Kraftfahrzeugteilen ein erheblicher Kostendruck gegeben, so dass die erfindungsgemäße Lösung eines Wärmetauschers hier besondere Vorteile gegenüber dem Stand der Technik bietet.Generally, the heat exchanger is a main cooler for an internal combustion engine of a motor vehicle. In this type of components, as in many cases, large-scale production of motor vehicle parts is subject to considerable cost pressure, so that the solution according to the invention of a heat exchanger offers particular advantages over the prior art.

Um die Kühtmitteiströmung auf der Innenseite des Kastens nicht negativ zu beeinflussen, ist gemäß einer bevorzugten Ausführungsform an den Innenseiten der Kastenschenkel ebenfalls eine Abschrägung angebracht.In order not to negatively influence the Kühtmitteiströmung on the inside of the box, according to a preferred embodiment, a bevel is also attached to the inner sides of the box legs.

Die Erfindung betrifft weiterhin ein Kraftfahrzeug mit einem Wärmetauscher nach einem der Ansprüche 1 bis 13.The invention further relates to a motor vehicle having a heat exchanger according to one of claims 1 to 13.

Weitere Vorteile und Merkmale der Erfindung ergeben sich aus dem nachfolgend beschriebenen Ausführungsbeispiel sowie aus den abhängigen Ansprüchen.Further advantages and features of the invention will become apparent from the embodiment described below and from the dependent claims.

Nachfolgend wird ein bevorzugtes Ausführungsbeispiel eines erfindungsgemäßen Wärmetauschers beschrieben und anhand der anliegenden Zeichnungen näher erläutert.

  • Fig. 1 zeigt eine räumliche schematische Gesamtansicht eines Wärmetauschers gemäß einem bevorzugten Ausführungsbeispiel.
  • Fig. 2 zeigt eine Schnittansicht des Details A aus Fig. 1.
  • Fig. 3 zeigt eine Detailvergrößerung der Ansicht aus Fig. 2.
  • Fig. 4 zeigt ein weiteres bevorzugtes Ausführungsbeispiel.
Hereinafter, a preferred embodiment of a heat exchanger according to the invention will be described and explained in more detail with reference to the accompanying drawings.
  • Fig. 1 shows a schematic overall view of a heat exchanger according to a preferred embodiment.
  • FIG. 2 shows a sectional view of the detail A from FIG. 1.
  • 3 shows an enlarged detail of the view from FIG. 2.
  • Fig. 4 shows another preferred embodiment.

Der Wärmetauscher gemäß dem bevorzugten Ausführungsbeispiel umfasst eine Mehrzahl von als Flachrohre ausgebildeten, parallel angeordneten Tauscherrohren 1. Zwischen den Tauscherrohren 1 sind jeweils Kühlrippen angeordnet, die von Kühlluft umströmt werden und die Tauscherleistung verbessern. Die Flachrohre 1 werden von einem flüssigen Kühlmittel eines Hauptmotors eines Kraftfahrzeugs durchströmt, so dass die Wärme des Kühlmittels an die kühlende Außenluft abgeben wird.The heat exchanger according to the preferred embodiment comprises a plurality of flat tubes designed as parallel exchanger tubes 1. Between the exchanger tubes 1 each cooling fins are arranged, which are flowed around by cooling air and improve the heat exchanger performance. The flat tubes 1 are flowed through by a liquid coolant of a main engine of a motor vehicle, so that the heat of the coolant will be released to the cooling outside air.

Die Tauscherrohre 1 bestehen aus einer Aluminiumlegierung. Endseitig münden sie jeweils in ein Bodenelement 3. Die Bodenelemente 3 sind als Formteile aus Blechen einer Aluminiumlegierung mittels Stanzung und Biegung hergestellt. Die Tauscherrohre 1 durchgreifen ihnen jeweils zugeordnete Ausstanzungen in dem Bodenelement 3 und sind im Bereich der Ausstanzungen mit dem Bodenelement 3 kühlmitteldicht verlötet.The exchanger tubes 1 consist of an aluminum alloy. At the end they each open into a bottom element 3. The bottom elements 3 are produced as shaped parts from sheets of aluminum alloy by means of punching and bending. The exchanger tubes 1 pass through their respective associated punched holes in the bottom element 3 and are soldered in the region of the punched-outs with the bottom element 3 in a coolant-tight manner.

Gemäß Fig. 2 haben die Bodenelemente einen im wesentlichen U-förmigen Querschnitt mit einem flachen Bodenteil des U, der von den Tauscherrohen 1 durchgriffen wird. Die seitlichen Schenkel 3a, 3b des U-förmigen Querschnitts gehören zu einem umlaufenden Kragen des Bodenelements 3 und sind jeweils in korrespondierende Ausformungen eines jeweiligen Kastens 4 des Wärmetauschers eingesetzt. Die Kästen 4 bestehen aus einem glasfaserverstärkten Polyamid.2, the bottom elements have a substantially U-shaped cross-section with a flat bottom part of the U, which is penetrated by the exchanger tubes 1. The lateral legs 3a, 3b of the U-shaped cross-section belong to a peripheral collar of the bottom element 3 and are each in corresponding formations of a respective box 4th used the heat exchanger. The boxes 4 are made of a glass fiber reinforced polyamide.

Gemäß der Detaildarstellung Fig. 3 haben die Ausformungen der Kästen 4 zur Aufnahme des Kragens bzw. der Schenkel 3a, 3b des Bodenelements 3 im Querschnitt jeweils zwei Schenkel 4a, 4b, zwischen denen der jeweilige Schenkel 3b des Bodenelements 3 eingeführt ist.According to the detailed illustration Fig. 3, the formations of the boxes 4 for receiving the collar or the legs 3a, 3b of the bottom member 3 in cross-section respectively two legs 4a, 4b, between which the respective leg 3b of the bottom element 3 is inserted.

In dem einen Schenkel 4b des Kastens 4 ist eine Ausnehmung 5 vorgesehen, die im zusammengebauten Zustand mit einer Noppe oder einer umlaufenden Ausstülpung 6 des Schenkels 3b des Bodenelements 3 korrespondiert.In the one leg 4b of the box 4, a recess 5 is provided, which corresponds in the assembled state with a knob or a circumferential protuberance 6 of the leg 3b of the bottom element 3.

Aus Fig. 3 ist ersichtlich, dass der Schenkel 3b im Zuge des Einsteckens in die Ausnehmung zwischen den Schenkeln 4a, 4b des Kastens 4 mit seiner Noppe 6 zunächst an eine abgeschrägte Flanke 8 des Schenkels 4b anstößt, wodurch der Schenkel 4b des Kastens elastisch nach außen gebogen wird. Der Endbereich des Schenkels 3b stößt sodann an eine Abschrägung 9 des anderen Kastenschenkels 4a an, der elastisch in Gegenrichtung gebogen wird. Sobald die Noppe 6 in die Ausnehmung 5 des Schenkels 4b eingreifen kann, kommt es zu einer elastischen Rückverformung des Schenkels 4b des Kastens, wonach im Sinne einer Einrastung die Noppe 6 in die Ausnehmung 5 eingreift und den Schenkel 3b mechanisch zwischen den Schenkeln 4a, 4b haltert. Alternativ oder ergänzend kann der Schenkel 3b des Bodenelements 3 eine federnde Verformbarkeit aufweisen, um den Kasten 4 einzurasten. Jede geeignete Art einer Rastgeometrie kann an dieser Stelle eingesetzt werden.From Fig. 3 it can be seen that the leg 3b in the course of insertion into the recess between the legs 4a, 4b of the box 4 with its nub 6 initially abuts a bevelled edge 8 of the leg 4b, whereby the leg 4b of the box elastic is bent on the outside. The end portion of the leg 3b then abuts a chamfer 9 of the other box leg 4a, which is elastically bent in the opposite direction. Once the nub 6 can engage in the recess 5 of the leg 4b, there is an elastic deformation of the leg 4b of the box, after which the nub 6 engages in the recess 5 in the sense of a latching and the legs 3b mechanically between the legs 4a, 4b supports. Alternatively or additionally, the leg 3b of the bottom element 3 may have a resilient deformability in order to lock the box 4. Any suitable type of detent geometry can be used at this point.

Gemäß einer in Fig. 4 gezeigten Variante weist der Schenkel 3b des Bodenelements 3 an seinem Ende eine konvexe Ausformung 12 auf, welche bevorzugt rund oder auch spitz ausgestaltet ist. Insbesondere ist die Ausformung geometrisch derart an die Ausnehmung zwischen den Schenkeln 4a, 4b des Kastens 4 angepasst, dass der Spalt zwischen dem Kasten und dem Bodenelement in diesem Bereich eine im Wesentlichen gleichmäßige Breite aufweist. Dadurch wird ein verbessertes Abfließen des Klebstoffs ermöglicht und Lufteinschlüsse werden unter Umständen vermindert oder vermieden.According to a variant shown in Fig. 4, the leg 3b of the bottom member 3 at its end a convex formation 12, which is preferably designed round or pointed. In particular, the shape is geometrically adapted to the recess between the legs 4a, 4b of the box 4, that the gap between the box and the bottom element in this area a substantially uniform width having. This will allow for improved drainage of the adhesive and may reduce or eliminate trapped air.

Beim Zusammenbau des Wärmetauschers wurde vor dem Einstecken des Kragens 3b ein Klebstoff bevorzugt auf Basis von Epoxidharz entweder auf den Kragen 3b oder in den Zwischenraum zwischen den Schenkeln 4a, 4b oder auf beide aufgebracht. In der Darstellung gemäß Fig. 3 ist der Klebstoff 10 lediglich auf einer Stirnseite des Kragens 3b vorgesehen, wodurch eine nur geringe Klebstoffmenge benötigt wird. Es kann aber auch eine Klebstoffmenge verwendet werden, die zudem ein flächiges Ankleben der Seiten des Kragens 3b an den gegenüberliegenden Flächen der Schenkel 4a, 4b bewirkt, so dass eine besonders großflächige und sichere Verklebung gegeben ist.When assembling the heat exchanger, an adhesive based on epoxy resin was preferably applied either to the collar 3b or into the intermediate space between the legs 4a, 4b or both prior to the insertion of the collar 3b. In the illustration according to FIG. 3, the adhesive 10 is provided only on one end face of the collar 3b, whereby only a small amount of adhesive is required. But it can also be used an amount of adhesive, which also causes a surface sticking of the sides of the collar 3b on the opposite surfaces of the legs 4a, 4b, so that a particularly large-area and secure bonding is given.

Nach Aushärten des Klebstoffs 10, der auch im ausgehärteten Zustand eine Restelastizität aufweisen kann, ist eine dichte und feste Verbindung zwischen dem Bodenelement 3 und dem Kasten 4 gegeben. Bodenelement 3 und Kasten 4 bilden zusammen einen Hohlraum zur Führung von Kühlmittel, wobei das Kühlmittel je nach Fließrichtung von dem Hohlraum 11 auf die Tauscherrohre 1 verteilt oder aus ihnen gesammelt wird.After curing of the adhesive 10, which may also have a residual elasticity in the cured state, a tight and firm connection between the bottom element 3 and the box 4 is given. Floor element 3 and box 4 together form a cavity for guiding coolant, wherein the coolant is distributed depending on the direction of flow of the cavity 11 to the exchanger tubes 1 or collected from them.

Claims (14)

Wärmetauscher, insbesondere für ein Kraftfahrzeug, umfassend eine Mehrzahl von Tauscherrohren (1), wobei die Tauscherrohre (1) von einem Kühlmittel durchströmbar und von einem Luftstrom zur Kühlung des Kühlmittels umströmbar sind,
ein Bodenelement (3), wobei die Tauscherrohre (1) jeweils an dem Bodenelement (3) festgelegt sind, und
ein kühlmitteldicht an dem Bodenelement (3) festgelegter Kasten (4), wobei durch das Bodenelement (3) und den Kasten (4) ein Hohlraum zur gesammelten Führung des Kühlmittels ausgebildet ist,
dadurch gekennzeichnet,
dass das Bodenelement (3) mit dem Kasten (4) verklebt ist.Heat exchanger, in particular for a motor vehicle, comprising a plurality of exchanger tubes (1), wherein the exchanger tubes (1) can be traversed by a coolant and can be flowed around by an air flow for cooling the coolant,
a bottom element (3), wherein the exchanger tubes (1) are respectively fixed to the bottom element (3), and
a box (4) fixed to the bottom element (3) by means of a coolant, wherein a cavity for collecting the coolant is collected by the bottom element (3) and the box (4),
characterized,
that the bottom element (3) is glued to the box (4). Wärmetauscher nach Anspruch 1, dadurch gekennzeichnet, das die Verklebung des Bodenelements (3) mit dem Kasten (4) kühlmitteldicht ist, wobei insbesondere keine weitere Dichtung zwischen Bodenelement (3) und Kasten (4) vorgesehen ist.Heat exchanger according to claim 1, characterized in that the bonding of the bottom element (3) with the box (4) is coolant-tight, in particular, no further seal between the bottom element (3) and box (4) is provided. Wärmetauscher nach Anspruch 1, dadurch gekennzeichnet, dass das Bodenelement (3) aus einer Metalllegierung, vorzugsweise einer Remanit-, Eisen-, Buntmetall- oder Aluminiumlegierung besteht.Heat exchanger according to claim 1, characterized in that the bottom element (3) consists of a metal alloy, preferably a remanite, iron, non-ferrous metal or aluminum alloy. Wärmetauscher nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Kasten (4) aus einem Kunststoff, insbesondere einem Polyamid, besteht.Heat exchanger according to one of the preceding claims, characterized in that the box (4) consists of a plastic, in particular a polyamide. Wärmetauscher nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass ein Kragen (3a, 3b) des Bodenelements (3) zwischen zwei Schenkeln (4a, 4b) des Kastens (4) angeordnet ist.Heat exchanger according to one of the preceding claims, characterized in that a collar (3a, 3b) of the bottom element (3) between two legs (4a, 4b) of the box (4) is arranged. Wärmetauscher nach Anspruch 5, dadurch gekennzeichnet, dass ein Klebstoff der Verklebung zwischen einer Stirnfläche des Kragens (3a, 3b) und einer zwischen den Schenkeln (4a, 4b) des Kastens (4) befindlichen Bodenfläche angeordnet ist.Heat exchanger according to claim 5, characterized in that an adhesive of the bonding between an end face of the collar (3a, 3b) and between the legs (4a, 4b) of the box (4) located bottom surface is arranged. Wärmetauscher nach Anspruch 5 oder 6, dadurch gekennzeichnet, dass ein Klebstoff der Verklebung zwischen einer Seitenfläche des Kragens (3a, 3b) und einer Seitenfläche zumindest eines der Schenkel (4a, 4b) des Kastens (4) angeordnet ist. Heat exchanger according to claim 5 or 6, characterized in that an adhesive of the bonding between a side surface of the collar (3a, 3b) and a side surface of at least one of the legs (4a, 4b) of the box (4) is arranged. Wärmetauscher nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass ein Kragen (3a, 3b) des Bodenelements (3) eine zumindest abschnittsweise Verjüngung (7) aufweistHeat exchanger according to one of the preceding claims, characterized in that a collar (3a, 3b) of the bottom element (3) has an at least partially tapered section (7) Wärmetauscher nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass an zumindest einem der beiden, Bodenelement (3) oder Kasten (4), ein Vorsprung (6) angeordnet ist und dass an dem jeweils anderen der beiden eine dem Vorsprung (6) zugeordnete Ausnehmung (5) angeordnet ist, wobei der Vorsprung (6) formschlüssig in die Ausnehmung (5) eingreift.Heat exchanger according to one of the preceding claims, characterized in that on at least one of the two bottom element (3) or box (4), a projection (6) is arranged and that at the respective other of the two a projection (6) associated with the recess (5) is arranged, wherein the projection (6) engages positively in the recess (5). Wärmetauscher nach Anspruch 9, dadurch gekennzeichnet, dass der Vorsprung (6) als Ausbuchtung in einem Kragen (3a, 3b) des Bodenelements (3) ausgebildet ist.Heat exchanger according to claim 9, characterized in that the projection (6) is formed as a bulge in a collar (3a, 3b) of the bottom element (3). Wärmetauscher nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass das Bodenelement (3) ein insbesondere mittels Stanzung und Biegung hergestelltes Blechformteil ist.Heat exchanger according to one of the preceding claims, characterized in that the bottom element (3) is a sheet metal part produced in particular by means of punching and bending. Wärmetauscher nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Verklebung einen Klebstoff auf Epoxidharz-, Acrylat-, Polyurethan-, MS-Polymer und/oder Silikonbasis umfasst.Heat exchanger according to one of the preceding claims, characterized in that the adhesive comprises an adhesive based on epoxy resin, acrylate, polyurethane, MS polymer and / or silicone. Wärmetauscher nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Wärmetauscher ein Hauptkühler für einen Verbrennungsmotor eines Kraftfahrzeugs ist.Heat exchanger according to one of the preceding claims, characterized in that the heat exchanger is a main radiator for an internal combustion engine of a motor vehicle. Kraftfahrzeug, umfassend einen Wärmetauscher nach einem der Ansprüche 1 bis 13.Motor vehicle comprising a heat exchanger according to one of claims 1 to 13.
EP07010412A 2006-06-16 2007-05-25 Heat exchanger with bonded header tank Withdrawn EP1867945A1 (en)

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FR2989772A1 (en) * 2012-04-19 2013-10-25 Valeo Systemes Thermiques Heat exchanger e.g. cooler, for cooling charge air of diesel engine of car, has complementary holding units formed on exceeding end of envelope and side wall of fluid inlet and outlet collecting box delimiting groove associated with end
CN104405492A (en) * 2014-10-24 2015-03-11 无锡市汇源机械科技有限公司 Portable automobile plastic water tank
CN110068237A (en) * 2019-04-30 2019-07-30 张国华 A kind of anti-supply radiator storing energy
WO2021045370A1 (en) * 2019-09-02 2021-03-11 Hanon Systems Coolant/air heat exchanger

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CN104405492A (en) * 2014-10-24 2015-03-11 无锡市汇源机械科技有限公司 Portable automobile plastic water tank
CN110068237A (en) * 2019-04-30 2019-07-30 张国华 A kind of anti-supply radiator storing energy
CN110068237B (en) * 2019-04-30 2023-03-07 张国华 Anti-supply heat abstractor of storable energy
WO2021045370A1 (en) * 2019-09-02 2021-03-11 Hanon Systems Coolant/air heat exchanger

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