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EP0864838B1 - Heat exchanger for automotive vehicle - Google Patents

Heat exchanger for automotive vehicle Download PDF

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Publication number
EP0864838B1
EP0864838B1 EP98104133A EP98104133A EP0864838B1 EP 0864838 B1 EP0864838 B1 EP 0864838B1 EP 98104133 A EP98104133 A EP 98104133A EP 98104133 A EP98104133 A EP 98104133A EP 0864838 B1 EP0864838 B1 EP 0864838B1
Authority
EP
European Patent Office
Prior art keywords
heat exchanger
terminating
tube
tube block
collection
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
EP98104133A
Other languages
German (de)
French (fr)
Other versions
EP0864838A3 (en
EP0864838A2 (en
Inventor
Franco Ghiani
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
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First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=26034706&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0864838(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Priority claimed from DE19722098A external-priority patent/DE19722098B4/en
Application filed by Behr GmbH and Co KG filed Critical Behr GmbH and Co KG
Publication of EP0864838A2 publication Critical patent/EP0864838A2/en
Publication of EP0864838A3 publication Critical patent/EP0864838A3/en
Application granted granted Critical
Publication of EP0864838B1 publication Critical patent/EP0864838B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28HEAT EXCHANGE IN GENERAL
    • F28FDETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/02Header boxes; End plates
    • F28F9/0202Header boxes having their inner space divided by partitions
    • F28F9/0204Header boxes having their inner space divided by partitions for elongated header box, e.g. with transversal and longitudinal partitions
    • F28F9/0209Header boxes having their inner space divided by partitions for elongated header box, e.g. with transversal and longitudinal partitions having only transversal partitions
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28HEAT EXCHANGE IN GENERAL
    • F28DHEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D1/00Heat-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
    • F28D1/02Heat-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
    • F28D1/04Heat-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
    • F28D1/053Heat-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
    • F28D1/0535Heat-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
    • F28D1/05366Assemblies of conduits connected to common headers, e.g. core type radiators
    • F28D1/05375Assemblies of conduits connected to common headers, e.g. core type radiators with particular pattern of flow, e.g. change of flow direction
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28HEAT EXCHANGE IN GENERAL
    • F28FDETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/001Casings in the form of plate-like arrangements; Frames enclosing a heat exchange core
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28HEAT EXCHANGE IN GENERAL
    • F28FDETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/02Header boxes; End plates
    • F28F9/0219Arrangements for sealing end plates into casing or header box; Header box sub-elements
    • F28F9/0221Header boxes or end plates formed by stacked elements
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28HEAT EXCHANGE IN GENERAL
    • F28FDETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/02Header boxes; End plates
    • F28F9/0246Arrangements for connecting header boxes with flow lines
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28HEAT EXCHANGE IN GENERAL
    • F28DHEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D21/00Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
    • F28D2021/0019Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for
    • F28D2021/008Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for for vehicles
    • F28D2021/0082Charged air coolers
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28HEAT EXCHANGE IN GENERAL
    • F28DHEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D21/00Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
    • F28D2021/0019Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for
    • F28D2021/008Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for for vehicles
    • F28D2021/0091Radiators
    • F28D2021/0094Radiators for recooling the engine coolant
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28HEAT EXCHANGE IN GENERAL
    • F28FDETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2220/00Closure means, e.g. end caps on header boxes or plugs on conduits

Definitions

  • the invention relates to a heat exchanger for a motor vehicle with a flat tube and corrugated fins composite fins / tube block, with all tube ends of the Flat tubes are expanded for flat and flush abutment with two Collection boxes, each on the opposite end faces of the fins / tube block are placed on the pipe ends, the collecting boxes flush the pipe ends reach over, as well as with two side parts that are at least along the length of the fins / tube block and on opposite sides of the fins / tube block connect with each collection box to its - on its longitudinal axis related - side areas is designed open, and with the side parts on their opposite End faces to the manifold end sections have the Close open side areas of the collection boxes, the collection boxes with the Pipe ends of the fins / pipe block and the end sections of the side parts tight are solderable.
  • Such a heat exchanger for a motor vehicle is known from JP 63-169 497 A.
  • the heat exchanger has two side parts that extend over the length of the fins / tube block extend and each with their opposite ends End sections are provided, which in open side areas of the collection boxes of the Extend the heat exchanger and close it.
  • Each section points to its outer Front edge on a guide lug, the axially in an open to the front edge the collecting box is insertable. This will lift the collection box from avoided the respective side part transverse to its longitudinal axis.
  • the heat exchanger has a fin / tube block that consists of a variety is composed of flat tubes and corrugated fins arranged between them
  • the tube ends of the flat tubes are on one end of the fins / tube block rectangular free cross section expanded such that the long sides formed in each case the pipe ends of adjacent flat pipes lie flat and aligned with each other, see above that there is a tube end package on both ends of the fins / tube block
  • This tube end package is on both ends of a collecting box overlapped, which is dimensioned such that it is flush with the narrow sides the pipe ends can be put on.
  • Side parts are arranged on the sides of the fins / tube block, either on the outside or inside on the closed side areas of the collection boxes are attachable.
  • the object of the invention is to provide a heat exchanger of the type mentioned create that enables simplified manufacturing.
  • each collecting box fuse elements for at least axial support - on the longitudinal axis of each collecting tank related - the inserted end section are assigned to each side part.
  • This Securing elements are particularly advantageous for holding the individual together Components of the heat exchanger assembly before a fixed connection by a corresponding one Soldering process.
  • the securing elements thus serve to ensure cohesion Assembly from the collection boxes, the fins / tube block and the side parts in one To achieve pre-assembly stage and thus in particular before the actual soldering process.
  • the manufacture of the heat exchanger is considerably simplified as there are no additional ones Fasteners are required in the unsoldered state of the unit to hold the assembly together.
  • the solution according to the invention it is also possible to make the collection boxes considerably simplified, since they are not closed Side areas must have more. Close the side areas rather the end sections of the side parts.
  • the solution according to the invention creates the requirements for a mechanical assembly of the heat exchanger, whereby a significantly cheaper production is achieved. Even through the simple Building the collection boxes with open forehead areas is the manufacturing effort for reduced the heat exchanger.
  • By attaching the side parts to the ribs / tube block is also the functional locking of the side areas in a simple manner the collection boxes achieved. This makes it easy to position and align the individual components of the heat exchanger possible. You can either put it on first the collection boxes on the fins / pipe block and then attaching the Side parts or first attaching the side parts and then putting them on the collection boxes are made on the pre-assembled unit consisting of side parts and fins / tube block
  • each open side area of the collecting boxes has one at least over a certain axial length - on a longitudinal axis of each collecting box related - identical inner contour, and each end section of the side parts is with provided a terminating contour, which in such a way to the inner contour of the associated side area has been adjusted so that the end sections can be inserted flush into the side areas are.
  • This configuration is particularly advantageous if the collecting tanks such as the fins / tube block and the side parts are also made of metal and in a common Soldering process with the ribs / tube block and the side parts are soldered.
  • the collection boxes, the side parts and the fins / tube block are at least solder-plated in their areas to be joined together.
  • the collection boxes, the side panels and the fins / tube block are put together before the actual soldering process, the side parts with the help of straps or other tensioning devices are held on the sides of the fins / tube block.
  • this merged, but not yet soldered assembly close the end sections of the side parts already the side areas of the collection boxes. Because the inner contour of the collection boxes is designed identically over a certain axial length, the Side parts and thus also the end sections of the side parts during the soldering process move axially towards the center of the fins / tube block by a certain amount, without losing the flush closure in the area of the collection boxes.
  • the securing elements are in one piece with the Side areas of each collection box molded support tabs provided by a Deformation force from a release position aligned with the inner contour of the side area in a securing position axially engaging behind the respective end section are transferable.
  • the end sections of the side parts are on Provide height of the securing elements with corresponding guide parts, the Interlock the locking elements and the guide parts in the locking position.
  • the securing elements and the guide parts are matched to one another in such a way that in addition to axially securing the side parts to the collecting boxes, the collecting boxes even against loosening in the longitudinal direction of the fins / tube block and thus in the longitudinal direction the flat tubes are secured, which ensures a correct positioning of all Components of the heat exchanger to each other.
  • the side parts made of side profiles are rigid composed with these associated end profiles, the end profiles form the end sections and extend the front ends of the side profiles these are scheduled. This makes it possible to insert the side profiles as simple longitudinal profiles to produce an extrusion or a bending process, which reduces the manufacturing costs is reducible for the side parts.
  • a heat exchanger according to FIGS. 1 to 7, which is shown in the Embodiment as a water cooler for a motor vehicle 1 has a collection box serving upper water tank 1 as well as one serving as a collecting box lower water box 2. Between The two water boxes 1, 2 extend a fins / tube block 3, made up of a variety of parallel to each other extending flat tubes 5 and arranged between them Corrugated ribs 4 is composed. Both the water boxes 1, 2 and the fins / tube block are made of solder-plated Made of aluminum sheet.
  • the two water boxes 1, 2 are each as simple, U-like Profiles designed (Fig. 7), being both to the Tube ends 6 of the fins / tube block 3 towards them axial end faces - on a longitudinal axis L of each water tank 1, 2 related - are open.
  • the open ones End faces of each water box 1, 2 form side areas 10, the end profiles serving as end sections 9 are closed by side parts 7.
  • the side parts 7 as well their insertion into the side areas 10 of the water boxes 1 and 2 are described in more detail below.
  • the upper water tank 1 has an inlet connection 11 and one - in relation to the longitudinal axis L - axially offset Outlet port 12 provided laterally to corresponding Openings of the water box 1 are tightly attached.
  • a separation area 19 Partition unspecified inside the water tank 1 provided.
  • the Separation area 19 by arch-like, rib-shaped impressions formed on which there is a partition inside the water tank 1 can support.
  • the lower water tank 2 is also provided with a separation area 20, the analog rib-shaped Has impressions, but in the illustrated embodiment for the water box 2 no further function exhibit.
  • the side regions have 10 of each water box 1, 2 starting from its front edge to the middle of each water box 1 - in axial Seen in the direction of the longitudinal axis L - a constant inner contour on, with one leg of the U-like profile each side area 10 with a greater curvature to one Head side of the profile connects as the other leg.
  • the two end sections 9 of each side part 7 have a serving as the final contour on the outer contour that exactly to the Inner contour of the associated side area 10 of each water box 1, 2 is adapted.
  • Each end section 9 is as tongue-like sheet metal part made of aluminum, the symmetrical is angled to widen the pipe ends (Fig. 1).
  • each end section 9 At the outer edge of each end section 9 is a circumferential Provided flange 17 which is perpendicular to the End section 9 protrudes and the to the inner contour of the Side area 10 of each water box 1, 2 adapted final contour 12 of each end section 9 defined.
  • the Contact flange 17 also serves to stiffen the end section 9.
  • the end sections 9 positioned on the two water boxes 1, 2 in such a way that they have the outer corrugated fin 4 on each side limit the fins / tube block 3 and at the respective Tube end 6 of the corresponding outer flat tube 5 abut.
  • the plate-like runs from the respective pipe end 6 Bottom of each end section 9 in parallel Extension of the flat tubes 5 perpendicular to the longitudinal axis L each water box 1 to the top of the side area 10 of each water tank 1.
  • the contact flange 17 projects in each case outwards to the front edge of the respective side area 10 and closes with its front edge with the front edge of the respective side area 10.
  • the outside of the contact flange 17 lies all around on the inner contour of the Side area 10 of each water box 1.
  • Each side part 7 is made of a U-shaped side profile 8 as well as the attached to the extension of the side profile 8 Final sections 9 composed.
  • the final sections 9 are a perfect fit in the opposite End faces of the U-shaped side profile 8 used and by means of a rivet connection 13 and with the help of two soldering points 14 connected to the side profile 8.
  • In the side profiles 8 are connected to the end sections 9 each two mutually opposite punch-outs 15 are provided, those for fixing fasteners to the bracket serve the heat exchanger in the motor vehicle.
  • each receiving section 9 has two in their Dimensions of grooves 16 matched to the support tabs 18 on the same level on two opposite sides are punched out in the contact flange 17 (in particular Fig. 4).
  • the support tabs 18 around the bottom edges of the associated receiving grooves 16 pressed around inward, causing it to contact the flange 17 reach behind each end section 9 and claw around.
  • the support tabs 16 securing claws represents, on the one hand, the end sections 9 of the side parts 7 - based on the longitudinal axis L - axially to Load the middle of each water tank 1, 2 and the other a positive locking of the water tanks 1, 2 in Longitudinal direction of the fins / tube block 3 and thus in the longitudinal direction the flat tubes 5 offer, so that the individual components even without the subsequent soldering process compact unit are assembled.
  • Heat exchangers can also be used for other transfer media except water and air, as in the present embodiment the case is used. Therefor air / air heat exchangers may be mentioned in particular.
  • water water
  • the water can either be mixed with certain additives or other cooling liquids can be provided instead of water can.

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

Description

Die Erfindung betrifft einen Wärmeübertrager für ein Kraftfahrzeug mit einem aus Flachrohren und Wellrippen zusammengesetzten Rippen/Rohrblock, wobei alle Rohrenden der Flachrohre für ein flächiges und bündiges Aneinanderliegen aufgeweitet sind, mit zwei Sammelkästen, die jeweils an die gegenüberliegenden Stirnseiten des Rippen/Rohrblockes auf die Rohrenden aufgesetzt sind, wobei die Sammelkästen die Rohrenden bündig abschließend übergreifen, sowie mit zwei Seitenteilen, die sich wenigstens über die Länge des Rippen/Rohrblockes erstrecken und an gegenüberliegenden Seiten an den Rippen/Rohrblock anschließen, wobei jeder Sammelkasten zu seinen - auf seine Längsachse bezogen - Seitenbereichen hin offen gestaltet ist, und wobei die Seitenteile an ihren gegenüberliegenden Stirnenden zu den Sammelkästen Abschlussabschnitte aufweisen, die die offenen Seitenbereiche der Sammelkästen verschließen, wobei die Sammelkästen mit den Rohrenden des Rippen/Rohrblockes und den Abschlussabschnitten der Seitenteile dicht verlötbar sind.The invention relates to a heat exchanger for a motor vehicle with a flat tube and corrugated fins composite fins / tube block, with all tube ends of the Flat tubes are expanded for flat and flush abutment with two Collection boxes, each on the opposite end faces of the fins / tube block are placed on the pipe ends, the collecting boxes flush the pipe ends reach over, as well as with two side parts that are at least along the length of the fins / tube block and on opposite sides of the fins / tube block connect with each collection box to its - on its longitudinal axis related - side areas is designed open, and with the side parts on their opposite End faces to the manifold end sections have the Close open side areas of the collection boxes, the collection boxes with the Pipe ends of the fins / pipe block and the end sections of the side parts tight are solderable.

Aus der JP 63-169 497 A ist ein solcher Wärmeübertrager für ein Kraftfahrzeug bekannt. Der Wärmeübertrager weist zwei Seitenteile auf, die sich über die Länge des Rippen/Rohrblockes erstrecken und die an ihren gegenüberliegenden Stirnenden jeweils mit Abschlussabschnitten versehen sind, die in offene Seitenbereiche der Sammelkästen des Wärmeübertragers hineinragen und diese verschließen. Jeder Abschnitt weist an seiner äußeren Stirnkante eine Führungsnase auf, die axial in einen zur Stirnseite hin offenen Rand des Sammelkastens einschiebbar ist. Hierdurch wird ein Abheben des Sammelkastens von dem jeweiligen Seitenteil quer zu seiner Längsachse vermieden.Such a heat exchanger for a motor vehicle is known from JP 63-169 497 A. The heat exchanger has two side parts that extend over the length of the fins / tube block extend and each with their opposite ends End sections are provided, which in open side areas of the collection boxes of the Extend the heat exchanger and close it. Each section points to its outer Front edge on a guide lug, the axially in an open to the front edge the collecting box is insertable. This will lift the collection box from avoided the respective side part transverse to its longitudinal axis.

Ein weiterer Wärmeübertrager ist in der nicht vorveröffentlichten DE 195 43 986.4 beschrieben. Der Wärmeübertrager weist einen Rippen/Rohrblock auf, der aus einer Vielzahl von Flachrohren sowie zwischen diesen angeordneten Wellrippen zusammengesetzt ist Die Rohrenden der Flachrohre sind auf beiden Stirnseiten des Rippen/Rohrblockes auf einen rechteckigen freien Querschnitt derart aufgeweitet, dass die jeweils gebildeten Langseiten der Rohrenden benachbarter Flachrohre flächig und fluchtend aneinander liegen, so dass sich auf beiden Stirnseiten des Rippen/Rohrblockes jeweils ein Rohrendenpaket ergibt Dieses Rohrendenpaket wird auf beiden Stirnseiten von jeweils einem Sammelkasten übergriffen, der derart dimensioniert ist, dass er bündig abschließend mit den Schmalseiten der Rohrenden aufsetzbar ist. An den Seiten des Rippen/Rohrblockes sind Seitenteile angeordnet, die entweder außen oder innen an die geschlossenen Seitenbereiche der Sammelkästen anfügbar sind.Another heat exchanger is described in the unpublished DE 195 43 986.4. The heat exchanger has a fin / tube block that consists of a variety is composed of flat tubes and corrugated fins arranged between them The tube ends of the flat tubes are on one end of the fins / tube block rectangular free cross section expanded such that the long sides formed in each case the pipe ends of adjacent flat pipes lie flat and aligned with each other, see above that there is a tube end package on both ends of the fins / tube block This tube end package is on both ends of a collecting box overlapped, which is dimensioned such that it is flush with the narrow sides the pipe ends can be put on. Side parts are arranged on the sides of the fins / tube block, either on the outside or inside on the closed side areas of the collection boxes are attachable.

Aufgabe der Erfindung ist es, einen Wärmeübertrager der eingangs genannten Art zu schaffen, der einen vereinfachte Herstellung ermöglicht.The object of the invention is to provide a heat exchanger of the type mentioned create that enables simplified manufacturing.

Diese Aufgabe wird dadurch gelöst, dass den Seitenbereichen jedes Sammelkastens Sicherungselemente zur wenigstens axialen Stützung - auf die Längsachse jedes Sammelkastens bezogen - des eingefügten Abschlussabschnittes jedes Seitenteiles zugeordnet sind. Diese Sicherungselemente sind insbesondere vorteilhaft zum Zusammenhalten der einzelnen Bauteile der Wärmeübertragerbaueinheit vor einer festen Verbindung durch einen entsprechenden Lötprozess. Die Sicherungselemente dienen somit dazu, einen Zusammenhalt der Baueinheit aus den Sammelkästen, dem Rippen/Rohrblock und den Seitenteilen in einem Vormontagestadium und damit insbesondere vor dem eigentlichen Lötvorgang zu erzielen. Die Herstellung des Wärmeübertragers wird dadurch erheblich vereinfacht, da keine zusätzlichen Befestigungsmittel im unverlöteten Zustand der Baueinheit benötigt werden, um die Baueinheit zusammenzuhalten. Durch die erfindungsgemäße Lösung ist es zudem möglich, die Sammelkästen erheblich vereinfacht zu gestalten, da sie keine geschlossenen Seitenbereiche mehr aufweisen müssen. Das Verschließen der Seitenbereiche übernehmen vielmehr die Abschlussabschnitte der Seitenteile. Die erfindungsgemäße Lösung schafft die Voraussetzungen für einen maschinellen Zusammenbau des Wärmeübertragers, wodurch eine erheblich kostengünstigere Herstellung erzielt wird. Auch durch den einfachen Aufbau der Sammelkästen mit offenen Stirnbereichen wird der Herstellungsaufwand für den Wärmeübertrager reduziert. Durch das Anfügen der Seitenteile an den Rippen/ Rohrblock wird in einfacher Weise auch das funktionsgerechte Verschließen der Seitenbereiche der Sammelkästen erzielt. Dadurch ist eine einfache Positionierung und Ausrichtung der einzelnen Bauteile des Wärmeübertragers möglich. Dabei kann entweder zuerst das Aufsetzen der Sammelkästen auf den Rippen/Rohrblock und anschließend das Ansetzen der Seitenteile oder aber zuerst das Anfügen der Seitenteile und anschließend das Aufsetzen der Sammelkästen auf die vorgefügte Einheit aus Seitenteilen und Rippen/Rohrblock erfolgen.This object is achieved in that the side areas of each collecting box fuse elements for at least axial support - on the longitudinal axis of each collecting tank related - the inserted end section are assigned to each side part. This Securing elements are particularly advantageous for holding the individual together Components of the heat exchanger assembly before a fixed connection by a corresponding one Soldering process. The securing elements thus serve to ensure cohesion Assembly from the collection boxes, the fins / tube block and the side parts in one To achieve pre-assembly stage and thus in particular before the actual soldering process. The manufacture of the heat exchanger is considerably simplified as there are no additional ones Fasteners are required in the unsoldered state of the unit to hold the assembly together. With the solution according to the invention, it is also possible to make the collection boxes considerably simplified, since they are not closed Side areas must have more. Close the side areas rather the end sections of the side parts. The solution according to the invention creates the requirements for a mechanical assembly of the heat exchanger, whereby a significantly cheaper production is achieved. Even through the simple Building the collection boxes with open forehead areas is the manufacturing effort for reduced the heat exchanger. By attaching the side parts to the ribs / tube block is also the functional locking of the side areas in a simple manner the collection boxes achieved. This makes it easy to position and align the individual components of the heat exchanger possible. You can either put it on first the collection boxes on the fins / pipe block and then attaching the Side parts or first attaching the side parts and then putting them on the collection boxes are made on the pre-assembled unit consisting of side parts and fins / tube block

In Ausgestaltung der Erfindung weist jeder offene Seitenbereich der Sammelkästen eine wenigstens über eine bestimmte axiale Länge - auf eine Längsachse jedes Sammelkastens bezogen - identische Innenkontur auf, und jeder Abschlussabschnitt der Seitenteile ist mit einer Abschlusskontur versehen, die derart an die Innenkontur des zugeordneten Seitenbereiches angepasst ist, dass die Abschlussabschnitte in die Seitenbereiche bündig einfügbar sind. Diese Ausgestaltung ist besonders vorteilhaft, wenn die Sammelkästen wie der Rippen/Rohrblock und die Seitenteile ebenfalls aus Metall hergestellt sind und in einem gemeinsamen Lötvorgang mit dem Rippen/Rohrblock und den Seitenteilen verlötet werden. Vorzugsweise sind die Sammelkästen, die Seitenteile und der Rippen/Rohrblock wenigstens in ihren aneinanderzufügenden Bereichen lotplattiert. Die Sammelkästen, die Seitenteile und der Rippen/Rohrblock werden bereits vor dem eigentlichen Lötvorgang zusammengefügt, wobei die Seitenteile mit Hilfe von Spannbändern oder anderen Spanneinrichtungen an den Seiten des Rippen/Rohrblockes gehalten sind. In dieser zusammengefügten, jedoch noch nicht verlöteten Baueinheit verschließen die Abschlussabschnitte der Seitenteile bereits die Seitenbereiche der Sammelkästen. Dadurch, dass die Innenkontur der Sammelkästen über eine bestimmte axiale Länge identisch gestaltet ist, können sich die Seitenteile und damit auch die Abschlussabschnitte der Seitenteile während des Lötprozesses noch um einen bestimmten Betrag axial zur Mitte des Rippen/Rohrblockes hin bewegen, ohne dass der bündige Abschluß im Bereich der Sammelkästen verloren geht Dies ist besonders vorteilhaft, da während des Lötprozesses durch den Fluss der Lotschichten eine Setzbewegung des Rippen/Rohrblockes und der Seitenteile achsparallel zu den Längsachsen der Sammelkästen zur Mitte des Rippen/Rohrblockes hin erfolgt, wobei durch eine geeignete Spanneinrichtung, insbesondere durch die Spannbänder, eine axiale Nachführung der Seitenteile erfolgt. Somit ist eine äußerst maßgenaue und funktionssichere Herstellung des Wärmeübertragers erzielt. Zusätzlich wird trotz einfacher Herstellung eine gute Dichtheit der Lötverbindungen gewährleistet. In an embodiment of the invention, each open side area of the collecting boxes has one at least over a certain axial length - on a longitudinal axis of each collecting box related - identical inner contour, and each end section of the side parts is with provided a terminating contour, which in such a way to the inner contour of the associated side area has been adjusted so that the end sections can be inserted flush into the side areas are. This configuration is particularly advantageous if the collecting tanks such as the fins / tube block and the side parts are also made of metal and in a common Soldering process with the ribs / tube block and the side parts are soldered. Preferably, the collection boxes, the side parts and the fins / tube block are at least solder-plated in their areas to be joined together. The collection boxes, the side panels and the fins / tube block are put together before the actual soldering process, the side parts with the help of straps or other tensioning devices are held on the sides of the fins / tube block. In this merged, but not yet soldered assembly close the end sections of the side parts already the side areas of the collection boxes. Because the inner contour of the collection boxes is designed identically over a certain axial length, the Side parts and thus also the end sections of the side parts during the soldering process move axially towards the center of the fins / tube block by a certain amount, without losing the flush closure in the area of the collection boxes. This is Particularly advantageous, because during the soldering process, the flow of the solder layers Setting movement of the fins / tube block and the side parts parallel to the longitudinal axes the collection boxes to the center of the fins / tube block is carried out by a suitable Tensioning device, in particular through the tensioning straps, an axial tracking of the side parts. This is an extremely dimensionally accurate and reliable production of the heat exchanger achieved. In addition, despite the simple manufacture, there is good tightness the soldered connections guaranteed.

In weiterer Ausgestaltung der Erfindung sind als Sicherungselemente einstückig an den Seitenbereichen jedes Sammelkastens angeformte Stützlaschen vorgesehen, die durch eine Deformationskraft aus einer mit der Innenkontur des Seitenbereiches fluchtenden Freigabeposition in eine den jeweiligen Abschlussabschnitt axial hintergreifende Sicherungsposition überführbar sind. Dies ist eine besonders einfache und funktionssichere Ausgestaltung, die durch die Anformung der Stützlaschen am Sammelkasten ohne zusätzliche Bauteile auskommt.In a further embodiment of the invention, the securing elements are in one piece with the Side areas of each collection box molded support tabs provided by a Deformation force from a release position aligned with the inner contour of the side area in a securing position axially engaging behind the respective end section are transferable. This is a particularly simple and reliable design, due to the molding of the support straps on the collecting tank without additional components gets along.

In weiterer Ausgestaltung der Erfindung sind die Abschlussabschnitte der Seitenteile auf Höhe der Sicherungselemente mit korrespondierenden Führungsteilen versehen, wobei die Sicherungselemente und die Führungsteile in der Sicherungsposition ineinander greifen. Die Sicherungselemente und die Führungsteile sind derart aufeinander abgestimmt, dass zusätzlich zu einer axialen Sicherung der Seitenteile an den Sammelkästen die Sammelkästen selbst gegen ein Lösen in Längsrichtung des Rippen/Rohrblockes und damit in Längsrichtung der Flachrohre gesichert sind, wodurch sich eine maßgerechte Positionierung aller Bauteile des Wärmeübertragers zueinander ergibt.In a further embodiment of the invention, the end sections of the side parts are on Provide height of the securing elements with corresponding guide parts, the Interlock the locking elements and the guide parts in the locking position. The securing elements and the guide parts are matched to one another in such a way that in addition to axially securing the side parts to the collecting boxes, the collecting boxes even against loosening in the longitudinal direction of the fins / tube block and thus in the longitudinal direction the flat tubes are secured, which ensures a correct positioning of all Components of the heat exchanger to each other.

In weiterer Ausgestaltung der Erfindung sind die Seitenteile aus Seitenprofilen sowie starr mit diesen verbundenen Abschlussprofilen zusammengesetzt, wobei die Abschlussprofile die Abschlussabschnitte bilden und in Verlängerung der Stirnenden der Seitenprofile an diese angesetzt sind. Dadurch ist es möglich, die Seitenprofile als einfache Längsprofile in einem Strangpress- oder einem Biegeverfahren herzustellen, wodurch der Herstellungsaufwand für die Seitenteile reduzierbar ist.In a further embodiment of the invention, the side parts made of side profiles are rigid composed with these associated end profiles, the end profiles form the end sections and extend the front ends of the side profiles these are scheduled. This makes it possible to insert the side profiles as simple longitudinal profiles to produce an extrusion or a bending process, which reduces the manufacturing costs is reducible for the side parts.

Weitere Vorteile und Weiterbildungen der Erfindung ergeben sich aus den Unteransprüchen. Nachfolgend ist ein bevorzugtes Ausführungsbeispiel der Erfindung beschrieben, das anhand der Zeichnungen dargestellt ist.

Fig. 1
zeigt eine Ausführungsform eines erfindungsgemäßen Wärmeübertragers im Bereich seiner gegenüberliegenden Sammelkästen,
Fig. 2
eine Draufsicht auf den Wärmeübertrager nach Fig. 1 in Richtung des Pfeiles II in Fig. 1,
Fig. 3
eine Ansicht eines Seitenteiles des Wärmeübertragers nach den Fig. 1 und 2 in Pfeilrichtung III nach Fig. 1,
Fig. 4
eine weitere Ansicht des Seitenteiles nach Fig. 3 in Richtung des Pfeiles IV in Fig. 3,
Fig. 5
eine Draufsicht auf einen Seitenbereich eines Sammelkastens des Wärmeübertragers nach Fig. 1,
Fig. 6
eine Ansicht des Seitenbereiches in Richtung des Pfeiles VI in Fig. 5, und
Fig. 7
eine Ansicht des Seitenbereiches nach Fig. 6 in Richtung des Pfeiles VII in Fig. 6, wobei Stützlaschen in ihre Sicherungsposition umgebogen sind.
Further advantages and developments of the invention result from the subclaims. A preferred embodiment of the invention is described below, which is illustrated with reference to the drawings.
Fig. 1
shows an embodiment of a heat exchanger according to the invention in the region of its opposite header boxes,
Fig. 2
2 shows a plan view of the heat exchanger according to FIG. 1 in the direction of arrow II in FIG. 1,
Fig. 3
2 shows a view of a side part of the heat exchanger according to FIGS. 1 and 2 in the direction of arrow III according to FIG. 1,
Fig. 4
3 shows a further view of the side part according to FIG. 3 in the direction of arrow IV in FIG. 3,
Fig. 5
2 shows a plan view of a side region of a header tank of the heat exchanger according to FIG. 1,
Fig. 6
a view of the side region in the direction of arrow VI in Fig. 5, and
Fig. 7
a view of the side region of FIG. 6 in the direction of arrow VII in Fig. 6, wherein the support tabs are bent into their securing position.

Ein Wärmeübertrager nach den Fig. 1 bis 7, der beim dargestellten Ausführungsbeispiel als Wasserkühler für ein Kraftfahrzeug ausgeführt ist, weist gemäß Fig. 1 einen als Sammelkasten dienenden oberen Wasserkasten 1 sowie einen ebenfalls als Sammelkasten dienenden unteren Wasserkasten 2 auf. Zwischen den beiden Wasserkästen 1, 2 erstreckt sich ein Rippen/Rohrblock 3, der aus einer Vielzahl von parallel zueinander verlaufenden Flachrohren 5 sowie zwischen diesen angeordneten Wellrippen 4 zusammengesetzt ist. Sowohl die Wasserkästen 1, 2 als auch der Rippen/Rohrblock sind aus lotplattiertem Aluminiumblech hergestellt.A heat exchanger according to FIGS. 1 to 7, which is shown in the Embodiment as a water cooler for a motor vehicle 1 has a collection box serving upper water tank 1 as well as one serving as a collecting box lower water box 2. Between The two water boxes 1, 2 extend a fins / tube block 3, made up of a variety of parallel to each other extending flat tubes 5 and arranged between them Corrugated ribs 4 is composed. Both the water boxes 1, 2 and the fins / tube block are made of solder-plated Made of aluminum sheet.

Im Bereich der Wasserkästen 1, 2 sind alle Rohrenden der Flachrohre 5 derart aufgeweitet, daß sich identische, rechteckige freie Querschnitte ergeben, wobei jeweils die Langseiten benachbarter Rohrenden flächig aneinanderliegen und die Schmalseiten aller Rohrenden 6 auf jeweils einer Stirnseite des Rippen/Rohrblockes 3 auf gegenüberliegenden Seiten miteinander fluchten. Der Rippen/Rohrblock 3 einschließlich der Rohrenden 6 ist entsprechend der nicht vorveröffentlichten DE 195 43 986.4 gestaltet.In the area of water boxes 1, 2, all pipe ends are Flat tubes 5 expanded so that there are identical, rectangular free cross sections result, the long sides in each case adjacent pipe ends lie flat against each other and the Narrow sides of all pipe ends 6 on one end face of the fins / tube block 3 on opposite sides with each other aligned. The fins / tube block 3 including the Pipe ends 6 is in accordance with the unpublished DE 195 43 986.4 designed.

Die beiden Wasserkästen 1, 2 sind jeweils als einfache, U-artige Profile gestaltet (Fig. 7), wobei sie sowohl zu den Rohrenden 6 des Rippen/Rohrblockes 3 hin als auch zu ihren axialen Stirnseiten hin - auf eine Längsachse L jedes Wasserkastens 1, 2 bezogen - offen gestaltet sind. Die offenen Stirnseiten jedes Wasserkastens 1, 2 bilden Seitenbereiche 10, die durch als Abschlußabschnitte dienende Abschlußprofile 9 von Seitenteilen 7 verschlossen sind. Die Seitenteile 7 sowie ihre Einfügung in die Seitenbereiche 10 der Wasserkästen 1 und 2 werden nachfolgend näher beschrieben.The two water boxes 1, 2 are each as simple, U-like Profiles designed (Fig. 7), being both to the Tube ends 6 of the fins / tube block 3 towards them axial end faces - on a longitudinal axis L of each water tank 1, 2 related - are open. The open ones End faces of each water box 1, 2 form side areas 10, the end profiles serving as end sections 9 are closed by side parts 7. The side parts 7 as well their insertion into the side areas 10 of the water boxes 1 and 2 are described in more detail below.

Der obere Wasserkasten 1 ist mit einem Eintrittsstutzen 11 sowie einem - auf die Längsachse L bezogen - axial versetzten Austrittsstutzen 12 versehen, die seitlich an entsprechende Öffnungen des Wasserkastens 1 dicht angefügt sind. Um eine Trennung zwischen Eintritts- und Austrittsbereich des Wasserkastens 1 zu erhalten, ist in einem Trennbereich 19 eine nicht näher bezeichnete Trennwand im Inneren des Wasserkastens 1 vorgesehen. Wie aus Fig. 7 erkennbar ist, ist der Trennbereich 19 durch bogenartige, rippenförmige Einprägungen gebildet, an denen sich eine Trennwand im Inneren des Wasserkastens 1 abstützen kann. Auch der untere Wasserkasten 2 ist mit einem Trennbereich 20 versehen, der analoge rippenförmige Einprägungen aufweist, die jedoch beim dargestellten Ausführungsbeispiel für den Wasserkasten 2 keine nähere Funktion aufweisen.The upper water tank 1 has an inlet connection 11 and one - in relation to the longitudinal axis L - axially offset Outlet port 12 provided laterally to corresponding Openings of the water box 1 are tightly attached. To one Separation between the inlet and outlet area of the water tank 1 is to be obtained in a separation area 19 Partition unspecified inside the water tank 1 provided. As can be seen from Fig. 7, the Separation area 19 by arch-like, rib-shaped impressions formed on which there is a partition inside the water tank 1 can support. The lower water tank 2 is also provided with a separation area 20, the analog rib-shaped Has impressions, but in the illustrated embodiment for the water box 2 no further function exhibit.

Wie insbesondere aus Fig. 7 erkennbar ist, weisen die Seitenbereiche 10 jedes Wasserkastens 1, 2 von ihrem Stirnrand ausgehend bis zur Mitte jedes Wasserkastens 1 hin - in axialer Richtung der Längsachse L gesehen - eine gleichbleibende Innenkontur auf, wobei der eine Schenkel des U-artigen Profiles jedes Seitenbereiches 10 mit einer größeren Krümmung an eine Kopfseite des Profils anschließt als der andere Schenkel. Die beiden Abschlußabschnitte 9 jedes Seitenteiles 7 weisen eine als Abschlußkontur dienende Außenkontur auf, die exakt an die Innenkontur des zugehörigen Seitenbereiches 10 jedes Wasserkastens 1, 2 angepaßt ist. Jeder Abschlußabschnitt 9 ist als zungenartiges Blechteil aus Aluminium gestaltet, das symmetrisch zu der Aufweitung der Rohrenden abgewinkelt ist (Fig. 1). Am Außenrand jedes Abschlußabschnittes 9 ist ein umlaufender Anlageflansch 17 vorgesehen, der rechtwinklig von dem Abschlußabschnitt 9 abragt und die an die Innenkontur des Seitenbereiches 10 jedes Wasserkastens 1, 2 angepaßte Abschlußkontur 12 jedes Abschlußabschnittes 9 definiert. Der Anlageflansch 17 dient außerdem zur Versteifung des Abschlußabschnittes 9. Wie aus Fig. 1 erkennbar ist, sind die Abschlußabschnitte 9 an den beiden Wasserkästen 1, 2 derart positioniert, daß sie die äußere Wellrippe 4 auf jeder Seite des Rippen/Rohrblockes 3 begrenzen und an dem jeweiligen Rohrende 6 des korrespondierenden äußeren Flachrohres 5 anliegen. Von dem jeweiligen Rohrende 6 aus verläuft der plattenartige Boden jedes Abschlußabschnittes 9 in paralleler Verlängerung der Flachrohre 5 rechtwinklig zur Längsachse L jedes Wasserkastens 1 bis zur Kopfseite des Seitenbereiches 10 jedes Wasserkastens 1. Der Anlageflansch 17 ragt jeweils nach außen bis zum Stirnrand des jeweiligen Seitenbereiches 10 ab und schließt mit seinem Stirnrand mit dem Stirnrand des jeweiligen Seitenbereiches 10 ab. Die Außenseite des Anlageflansches 17 liegt umlaufend flächig an der Innenkontur des Seitenbereiches 10 jedes Wasserkastens 1 an.As can be seen in particular from FIG. 7, the side regions have 10 of each water box 1, 2 starting from its front edge to the middle of each water box 1 - in axial Seen in the direction of the longitudinal axis L - a constant inner contour on, with one leg of the U-like profile each side area 10 with a greater curvature to one Head side of the profile connects as the other leg. The two end sections 9 of each side part 7 have a serving as the final contour on the outer contour that exactly to the Inner contour of the associated side area 10 of each water box 1, 2 is adapted. Each end section 9 is as tongue-like sheet metal part made of aluminum, the symmetrical is angled to widen the pipe ends (Fig. 1). At the outer edge of each end section 9 is a circumferential Provided flange 17 which is perpendicular to the End section 9 protrudes and the to the inner contour of the Side area 10 of each water box 1, 2 adapted final contour 12 of each end section 9 defined. The Contact flange 17 also serves to stiffen the end section 9. As can be seen from Fig. 1, the end sections 9 positioned on the two water boxes 1, 2 in such a way that they have the outer corrugated fin 4 on each side limit the fins / tube block 3 and at the respective Tube end 6 of the corresponding outer flat tube 5 abut. The plate-like runs from the respective pipe end 6 Bottom of each end section 9 in parallel Extension of the flat tubes 5 perpendicular to the longitudinal axis L each water box 1 to the top of the side area 10 of each water tank 1. The contact flange 17 projects in each case outwards to the front edge of the respective side area 10 and closes with its front edge with the front edge of the respective side area 10. The outside of the contact flange 17 lies all around on the inner contour of the Side area 10 of each water box 1.

Jedes Seitenteil 7 ist aus einem U-förmigen Seitenprofil 8 sowie den in Verlängerung des Seitenprofiles 8 an dieses angesetzten Abschlußabschnitten 9 zusammengesetzt. Die Abschlußabschnitte 9 sind paßgenau in die gegenüberliegenden Stirnseiten des U-förmigen Seitenprofiles 8 eingesetzt und mittels einer Nietverbindung 13 sowie mit Hilfe von zwei Lötpunkten 14 mit dem Seitenprofil 8 verbunden. In den Seitenprofilen 8 sind im Anschluß an die Abschlußabschnitte 9 jeweils zwei einander gegenüberliegende Ausstanzungen 15 vorgesehen, die zur Festlegung von Befestigungselementen zur Halterung des Wärmeübertragers im Kraftfahrzeug dienen.Each side part 7 is made of a U-shaped side profile 8 as well as the attached to the extension of the side profile 8 Final sections 9 composed. The final sections 9 are a perfect fit in the opposite End faces of the U-shaped side profile 8 used and by means of a rivet connection 13 and with the help of two soldering points 14 connected to the side profile 8. In the side profiles 8 are connected to the end sections 9 each two mutually opposite punch-outs 15 are provided, those for fixing fasteners to the bracket serve the heat exchanger in the motor vehicle.

Um die Wasserkästen 1, 2 und die Seitenteile 7 in ihrer Position relativ zueinander sowie in ihrer gemeinsamen Position relativ zu dem Rippen/Rohrblock 3 vor einer Verlötung der gesamten Einheit zu sichern, sind an den Stirnrändern jedes Seitenbereiches 10 auf gegenüberliegenden Seiten und auf gleicher Höhe zwei Stützlaschen 18 ausgestanzt, die mit den Seitenwandungen jedes Wasserkastens 1 und damit auch mit der Innenkontur des zugeordneten Seitenbereiches 10 fluchten. Auf gleicher Höhe weist jeder Aufnahmeabschnitt 9 zwei in ihren Dimensionen an die Stützlaschen 18 angepaßte Aufnahmenuten 16 auf, die auf gleicher Höhe auf zwei gegenüberliegenden Seiten in dem Anlageflansch 17 ausgestanzt sind (insbesondere Fig. 4). Around the water boxes 1, 2 and the side parts 7 in their position relative to each other and in their common position relative to the fins / tube block 3 before soldering the whole Securing unity are on the front edges of each Side area 10 on opposite sides and on punched out the same height two support tabs 18 with the Side walls of each water box 1 and thus also with the Align inner contour of the assigned side area 10. On the same height, each receiving section 9 has two in their Dimensions of grooves 16 matched to the support tabs 18 on the same level on two opposite sides are punched out in the contact flange 17 (in particular Fig. 4).

Zur Montage des Wärmeübertragers werden die Wasserkästen 1, 2 auf die jeweiligen Rohrenden 6 in Längsrichtung des Rippen/Rohrblockes 3 und damit in Längsrichtung der Flachrohre 5 aufgeschoben und die Seitenteile 7 von gegenüberliegenden Seiten her an den Rippen/Rohrblock 3 angesetzt. Dabei werden die Abschlußabschnitte 9 der Seitenteile 7 axial - auf die Längsachse L jedes Wasserkastens 1, 2 bezogen - in die offenen Seitenbereiche 10 der Wasserkästen 1, 2 eingeschoben, bis die Stirnränder der Anlageflansche 17 und der Seitenbereiche 10 bündig miteinander abschließen. Nun werden die Stützlaschen 18 um die bodenseitigen Ränder der zugeordneten Aufnahmenuten 16 herum nach innen gedrückt, wodurch sie den Anlageflansch 17 des jeweiligen Abschlußabschnittes 9 hintergreifen und umkrallen. Da die Stützlaschen 18 paßgenau in die Aufnahmenuten 16 eingreifen, stellen die Stützlaschen 16 Sicherungskrallen dar, die zum einen die Abschlußabschnitte 9 der Seitenteile 7 - auf die Längsachse L bezogen - axial zur Mitte jedes Wasserkastens 1, 2 hin belasten und die zum anderen eine formschlüssige Sicherung der Wasserkästen 1, 2 in Längsrichtung des Rippen/Rohrblockes 3 und damit in Längsrichtung der Flachrohre 5 bieten, so daß die einzelnen Bauteile auch ohne den nachfolgenden Lötvorgang bereits zu einer kompakten Einheit zusammengefügt sind. Mit Hilfe einer Spanneinrichtung werden die Seitenteile 7 nun insbesondere durch den Einsatz von Spannbändern quer zur Längsrichtung des Rippen/Rohrblockes 3 belastet, wodurch der gesamte Rippen/Rohrblock 3 auf Druck in Querrichtung belastet wird. Im anschließenden Lötprozeß beginnen die Lotschichten der verschiedenen Lotplattierungen zu fließen, wodurch eine Setzbewegung der gesamten Einheit erfolgt, die ein Zusammenschieben, d.h. ein Nachführen der Seitenteile und des Rippen/Rohrblockes 3 in Querrichtung des Rippen/Rohrblockes 3 zu seiner Mitte hin bewirkt. Da die Innenkonturen der Seitenbereiche 10 und die Anlagekonturen 12 der Abschlußabschnitte 9 der Seitenteile 7 aufeinander abgestimmt sind, bleibt der dichte Abschluß der Seitenbereiche 10 der Wasserkästen 1, 2 mittels der Abschlußabschnitte 9 auch während des Lötprozesses erhalten. Somit wird eine einfache und maschinell durchführbare Herstellung und Verlötung des Wärmeübertragers erzielt.To mount the heat exchanger, the water boxes 1, 2 on the respective tube ends 6 in the longitudinal direction of the fins / tube block 3 and thus in the longitudinal direction of the flat tubes 5 pushed on and the side parts 7 from opposite Sides attached to the ribs / tube block 3. In doing so the end sections 9 of the side parts 7 axially - on the Longitudinal axis L of each water tank 1, 2 referred - in the open Side areas 10 of the water boxes 1, 2 inserted until the end edges of the contact flanges 17 and the side areas 10 flush with each other. Now the support tabs 18 around the bottom edges of the associated receiving grooves 16 pressed around inward, causing it to contact the flange 17 reach behind each end section 9 and claw around. Since the support tabs 18 fit snugly into the Engagement grooves 16 engage, the support tabs 16 securing claws represents, on the one hand, the end sections 9 of the side parts 7 - based on the longitudinal axis L - axially to Load the middle of each water tank 1, 2 and the other a positive locking of the water tanks 1, 2 in Longitudinal direction of the fins / tube block 3 and thus in the longitudinal direction the flat tubes 5 offer, so that the individual components even without the subsequent soldering process compact unit are assembled. With the help of a tensioning device are the side parts 7 now in particular the use of tensioning straps transversely to the longitudinal direction of the fins / tube block 3 loaded, causing the entire fins / tube block 3 is loaded on pressure in the transverse direction. In the following Soldering process begin the solder layers of the different Solder plating to flow, causing a setting movement of the entire unit, which is a pushing together, i.e. on Tracking the side parts and the ribs / tube block 3 in Transverse direction of the fins / tube block 3 to its center. Since the inner contours of the side areas 10 and the contact contours 12 of the end sections 9 of the side parts 7 are coordinated, the tight conclusion of the Side areas 10 of the water boxes 1, 2 by means of the end sections 9 also obtained during the soldering process. Consequently becomes a simple and mechanically feasible production and soldering the heat exchanger achieved.

Der anhand des zuvor beschriebenen Ausführungsbeispieles dargestellte Wärmeübertrager kann auch für andere Übertragermedien außer Wasser und Luft, wie dies beim vorliegenden Ausführungsbeispiel der Fall ist, eingesetzt werden. Hierfür seien insbesondere Luft/Luft-Wärmeübertrager genannt. Selbstverständlich muß beim dargestellten Ausführungsbeispiel der für die Kühlflüssigkeit verwendete Begriff "Wasser" mit dem Wissen eines Fachmannes verstanden werden, so daß das Wasser entweder mit bestimmten Zusätzen versetzt sein kann oder aber anstelle von Wasser andere Kühlflüssigkeiten vorgesehen sein können.The illustrated using the previously described embodiment Heat exchangers can also be used for other transfer media except water and air, as in the present embodiment the case is used. Therefor air / air heat exchangers may be mentioned in particular. Of course must in the illustrated embodiment used for the coolant term "water" with the Knowledge of a professional can be understood so that the water can either be mixed with certain additives or other cooling liquids can be provided instead of water can.

Claims (7)

  1. Heat exchanger for a motor vehicle with a fin/tube block made up of flat tubes and corrugated fins, all tube ends of the flat tubes being widened so as to sit in a flat and tight abutting arrangement, having two collection tanks mounted respectively on the tube ends at opposing side ends of the fin/tube block, the collection tanks engaging around the tube ends in a tight terminating arrangement, and having two side parts extending across at least the length of the fin/tube block and adjoining the fin/tube block at opposing ends, each collection tank (1, 2) being open at its end regions - relative to its longitudinal axis (L) - and the side parts (7) having terminating portions (9) at their terminal ends facing the collection tanks (10) which close off the open side regions (10) of the collection tanks (1, 2), the collection tanks (10) being sealingly welded to the tube ends (6) of the fin/tube block (3) and the terminating portions (9) of the side parts (7), characterised in that the side regions (10) of every collection tank (1, 2) are provided with fixing elements (18) to provide at least axial support - relative to the longitudinal axis L of every water tank (1, 2) - for the inserted terminating portion (9) of every side part (7).
  2. Heat exchanger as claimed in claim 1, characterised in that every open side region (10) of the collection tanks (1, 2) has an identical internal contour at least across a specific axial length - relative to a longitudinal axis (L) of every collection tank (1, 2) - and every terminating portion (9) of the side parts (7) is provided with a terminating contour (12) which is adapted to the internal contour of the co-operating side region (10) so that the terminating portions (9) can be inserted in the side regions (10) in a tight fit.
  3. Heat exchanger as claimed in claim 1, characterised in that fixing elements are provided in the form of supporting tabs (18) integrally formed on the side regions (10) of every collection tank (1, 2), which can be moved by a deformation force from a released position, flush with the internal contour of the side region (10), into a fixing position axially engaging behind the respective terminating portion (9).
  4. Heat exchanger as claimed in claim 1, characterised in that the terminating contour (12) of every terminating portion (9) is formed by an axially extending mounting flange (17) - relative to the longitudinal axis (L) of every collection tank (1, 2) - which terminates in a flat arrangement with the internal contour of the respective side region (10).
  5. Heat exchanger as claimed in claim 3 or 4, characterised in that the terminating portions (9) of the side parts (7) are provided with matching guide parts (16) on a level with the fixing elements (18), the fixing elements (18) and the guide parts (116) locating one inside the other in the fixing position.
  6. Heat exchanger as claimed in claim 5, characterised in that the mounting flange (17) of the terminating portions (9) is provided with receiving grooves (16) acting as guide parts, which are adapted to the dimensions of the supporting tabs (18) in order to engage the supporting tabs (18).
  7. Heat exchanger as claimed in at least one of the preceding claims, characterised in that the side parts (7) are made up of end sections (8) and terminating portions (9) rigidly joined to them, the end sections forming the terminating portions and being mounted on the side ends of the end sections (8) as an extension thereof.
EP98104133A 1997-03-11 1998-03-09 Heat exchanger for automotive vehicle Expired - Lifetime EP0864838B1 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE19709909 1997-03-11
DE19709909 1997-03-11
DE19722098 1997-05-27
DE19722098A DE19722098B4 (en) 1997-03-11 1997-05-27 Heat exchanger for a motor vehicle

Publications (3)

Publication Number Publication Date
EP0864838A2 EP0864838A2 (en) 1998-09-16
EP0864838A3 EP0864838A3 (en) 1999-11-24
EP0864838B1 true EP0864838B1 (en) 2002-12-04

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EP98104133A Expired - Lifetime EP0864838B1 (en) 1997-03-11 1998-03-09 Heat exchanger for automotive vehicle

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US (1) US6293334B1 (en)
EP (1) EP0864838B1 (en)
JP (1) JP4011718B2 (en)
ES (1) ES2186030T3 (en)

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Also Published As

Publication number Publication date
JPH10274491A (en) 1998-10-13
EP0864838A3 (en) 1999-11-24
ES2186030T3 (en) 2003-05-01
US6293334B1 (en) 2001-09-25
EP0864838A2 (en) 1998-09-16
JP4011718B2 (en) 2007-11-21

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