EP1302740A2 - Wärmetauscher für Kraftfahrzeug, mit Fluidverbindungsanschluss - Google Patents

Wärmetauscher für Kraftfahrzeug, mit Fluidverbindungsanschluss Download PDF

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Publication number
EP1302740A2
EP1302740A2 EP02254753A EP02254753A EP1302740A2 EP 1302740 A2 EP1302740 A2 EP 1302740A2 EP 02254753 A EP02254753 A EP 02254753A EP 02254753 A EP02254753 A EP 02254753A EP 1302740 A2 EP1302740 A2 EP 1302740A2
Authority
EP
European Patent Office
Prior art keywords
connection piece
aperture
header tank
heat exchanger
exchanger according
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP02254753A
Other languages
English (en)
French (fr)
Other versions
EP1302740A3 (de
Inventor
Paul Carman
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.)
Galsonic Kansei UK Ltd
Original Assignee
Galsonic Kansei UK Ltd
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 Galsonic Kansei UK Ltd filed Critical Galsonic Kansei UK Ltd
Publication of EP1302740A2 publication Critical patent/EP1302740A2/de
Publication of EP1302740A3 publication Critical patent/EP1302740A3/de
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/02—Header boxes; End plates
    • F28F9/0246—Arrangements for connecting header boxes with flow lines
    • 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
    • F28F2275/146—Fastening; Joining by using form fitting connection, e.g. with tongue and groove with bayonet connections

Definitions

  • the present invention relates to an automotive heat exchanger having a fluid connection fitment.
  • connection fitments for connection of the heat exchanger to connection hoses are typically brazed to respective header tanks of the heat exchanger.
  • Brazing usually takes place by means of passing the assembled heat exchanger through a brazing furnace in which the temperature of the assembly is elevated to a degree sufficient to ensure that brazing alloy cladding present on the surface of the aluminium components of the heat exchanger melts and flows to ensure bonding at brazed connection joints.
  • brazing alloy cladding present on the surface of the aluminium components of the heat exchanger melts and flows to ensure bonding at brazed connection joints.
  • One of the disadvantages with brazing processes is that components frequently need to be clamped together. It is an object of the present invention to alleviate such problems.
  • a fusion bonded automotive heat exchanger including a header tank having a fitment for fluid connection to an upstream or downstream conduit; the fitment comprising a connection piece cooperating with an aperture in the header tank, the connection piece including a flange portion abutting an outer surface of the header tank about the aperture and a distal end projecting beyond the flange and through the aperture in the header tank, the connection piece carrying in the region of the distal end one or more lateral projection formations abutting the internal surface of the header tank about the aperture.
  • the receiving aperture in the header includes a laterally extending mouth portion corresponding to the lateral projection formation of the distal end of the connection piece.
  • the connection piece is rotated relative to the axis of the aperture to a configuration in which the projection and associated mouth portion are out of line.
  • the connection piece is advanced toward the aperture in the header tank such that the flange portion abuts the outer surface of the header tank about the aperture and the distal end projects through the aperture in the header tank permitted by one or more of the lateral projection formations carried by the connection piece co-aligning with a respective lateral mouth extension at the periphery of the aperture.
  • the connection piece is then rotated relative to the aperture about the axis of the connection piece to a configuration in which the lateral projection formation of the connection piece and the respective aperture lateral mouth formation are out of alignment.
  • connection piece The space between the lateral projection of the connection piece and the flange of the connection piece is shaped and dimensioned to be close on an interference fit with the wall thickness of the header tank around the periphery of the aperture. Rotating the connection piece to its out of alignment position therefore ensures a secure enough connection between the connection piece and the header tank to permit the brazing operation without the requirement for further clamping between the connection piece and the header tank.
  • the invention therefore provides a method of manufacturing a heat exchanger comprising:
  • the flange portion preferably extends outwardly from the remainder of the connection piece to provide an annular flange surface extending substantially perpendicular to the axis of the connection piece.
  • the flange portion is preferably defined at a folded or upset bend comprising a double wall thickness of material of the connection piece.
  • connection piece is less laterally extensive than the flange portion. It is preferred that the connection piece carries a plurality of projection formations spaced angularly about the axis of the connection piece, the aperture including correspondingly angularly spaced mouth portions. Beneficially the lateral projection formations of the connection piece are spaced at 180° about the axis of the connection piece.
  • the lateral projection at the distal end of the connection piece is spaced from the facing portion of the flange by distance of substantially the thickness of the header tank in the region of the aperture.
  • connection piece and header tank are formed of substantially the same material (preferably aluminium material beneficially clad in a suitable brazing alloy to permit brazing in a one shot brazing process). This is beneficial because it ensures that for recycling purposes the connection piece and header tank may be recycled in the same fashion rather than requiring disassembly for recycling.
  • connection piece permits rapid assembly without the requirement for mechanical attachment by a secondary process (for example clamping).
  • the connection piece is simply inserted into the aperture, with the formations matched and rotated (typically by approximately 30°) to an out of alignment situation. This is sufficient to hold the connection piece relative to the header tank until the brazing process renders the joint permanent.
  • Figures 1 and 2 show a header tank 1 for a heat exchanger such as a radiator or a condenser (or a combined, unified radiator/condenser).
  • a front face or tube plate 2 of the header tank includes a series of spaced plunging apertures 3 shaped and dimensioned to receive ends of heat exchanger tubes which extend between, typically, two spaced header tanks 1.
  • Third connection into or out of header tank 1 is provided via aperture 4 which is generally of uniform diameter but has a pair of spaced laterally radially projecting mouth portions 5, 6 spaced angularly at 180° from one another.
  • Connection piece 10 (shown in Figures 3 to 5) is generally tubular and includes a proximal end 11 provided with an inwardly tapering terminal portion 12 for ease of connection to a flexible hose.
  • connection piece 10 includes an upset wall portion 13 of double thickness wall abutting face against face to provide a flange face 14.
  • the distal end portion of connection piece 10 includes an extension portion projecting distally from flange 14, distally projecting portion 15 being provided at 180° angularly spaced locations with respective laterally outward projecting formations 16.
  • the distance between laterally outward projecting formations 16 and flange surface 14 is matched to the thickness of the material of the header tank about the periphery of aperture 4.
  • the header tank material 4 therefore may be sandwiched between projection 16 and flange 14 in a sandwich or interference fit.
  • connection piece 10 is advanced toward aperture 4 in axial alignment and with projections 16 matched up with mouth portions 5.
  • Projections 16 pass through mouth portions 5 such that distal extension 15 passes through aperture 4 and flange surface 14 abuts against the external housing wall of header tank 1.
  • connection piece 10 is rotated about its axis of approximately 30° such that lateral projection 16 out of alignment with lateral mouth portion projections 5, 6.
  • the flange surface 14 abuts the outer surface of the header tank approximate the aperture 4, and the projections 16 abut the inner surface of the header tank about the periphery of aperture 4.
  • the interference fit is sufficient to prevent projections 16 realigning with mouth portions 5, 6 and therefore the connection is secure enough for the purposes of entering the brazing furnace.
  • header tank 1 and the outer surface of the connection piece 10 are clad in aluminium brazing alloy. This is a commonly used technique in the art of brazing aluminium components used in the automotive heat exchanger field.
  • the flange 14 provides a good surface for forming a secure brazed bond with the external surface of the header tank.
  • the heat exchanger assembly including the secured connection piece and header tank are pressed through a brazing furnace in order to braze the assembly.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Details Of Heat-Exchange And Heat-Transfer (AREA)
EP02254753A 2001-10-16 2002-07-04 Wärmetauscher für Kraftfahrzeug, mit Fluidverbindungsanschluss Withdrawn EP1302740A3 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB0124774A GB2380965A (en) 2001-10-16 2001-10-16 Automotive heat exchanger having fluid connection piece
GB0124774 2001-10-16

Publications (2)

Publication Number Publication Date
EP1302740A2 true EP1302740A2 (de) 2003-04-16
EP1302740A3 EP1302740A3 (de) 2004-05-26

Family

ID=9923902

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02254753A Withdrawn EP1302740A3 (de) 2001-10-16 2002-07-04 Wärmetauscher für Kraftfahrzeug, mit Fluidverbindungsanschluss

Country Status (2)

Country Link
EP (1) EP1302740A3 (de)
GB (1) GB2380965A (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1479996A1 (de) * 2003-05-20 2004-11-24 Behr France S.A.R.L. Rohranschlussverbindung für Wärmeübertrager, insbesondere Heinzkörper für Kraftfahrzeuge

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4026456A (en) * 1976-01-15 1977-05-31 Modine Manufacturing Company Method of attaching a tube to a wall
US4379574A (en) * 1980-12-22 1983-04-12 Ex-Cell-O Corporation Radiator assembly (bayonet lock)
US5538076A (en) * 1993-12-17 1996-07-23 Nippondenso Co., Ltd. Pipe fitting mechanism and heat exchanger using same
US5555929A (en) * 1994-05-23 1996-09-17 Nippondenso Co., Ltd Heat exchanger
FR2809485A1 (fr) * 2000-05-29 2001-11-30 Valeo Thermique Moteur Sa Boite collectrice pour un echangeur de chaleur brase et echangeur comportant une telle boite

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1508229A (fr) * 1966-11-21 1968-01-05 Chausson Usines Sa Procédé pour la liaison par brassage d'une tubulure sur un réservoir en aluminiumet produit en résultant
JP3393957B2 (ja) * 1995-05-30 2003-04-07 サンデン株式会社 熱交換器の流体給排管接合方法
JP4718752B2 (ja) * 2000-05-29 2011-07-06 ヴァレオ テルミーク モツール ろう付け熱交換器用のマニホルドブロック

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4026456A (en) * 1976-01-15 1977-05-31 Modine Manufacturing Company Method of attaching a tube to a wall
US4379574A (en) * 1980-12-22 1983-04-12 Ex-Cell-O Corporation Radiator assembly (bayonet lock)
US5538076A (en) * 1993-12-17 1996-07-23 Nippondenso Co., Ltd. Pipe fitting mechanism and heat exchanger using same
US5555929A (en) * 1994-05-23 1996-09-17 Nippondenso Co., Ltd Heat exchanger
FR2809485A1 (fr) * 2000-05-29 2001-11-30 Valeo Thermique Moteur Sa Boite collectrice pour un echangeur de chaleur brase et echangeur comportant une telle boite

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1479996A1 (de) * 2003-05-20 2004-11-24 Behr France S.A.R.L. Rohranschlussverbindung für Wärmeübertrager, insbesondere Heinzkörper für Kraftfahrzeuge

Also Published As

Publication number Publication date
GB2380965A (en) 2003-04-23
GB0124774D0 (en) 2001-12-05
EP1302740A3 (de) 2004-05-26

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