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EP0473475B1 - Vorrichtung mit einem Wasserkasten für einen ersten Wärmetauscher und einem zweiten Wärmetauscher - Google Patents

Vorrichtung mit einem Wasserkasten für einen ersten Wärmetauscher und einem zweiten Wärmetauscher Download PDF

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Publication number
EP0473475B1
EP0473475B1 EP91402077A EP91402077A EP0473475B1 EP 0473475 B1 EP0473475 B1 EP 0473475B1 EP 91402077 A EP91402077 A EP 91402077A EP 91402077 A EP91402077 A EP 91402077A EP 0473475 B1 EP0473475 B1 EP 0473475B1
Authority
EP
European Patent Office
Prior art keywords
heat exchanger
water header
terminal portion
wall
assembly 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.)
Expired - Lifetime
Application number
EP91402077A
Other languages
English (en)
French (fr)
Other versions
EP0473475A1 (de
Inventor
Gauyer Le
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.)
Valeo Thermique Moteur SA
Original Assignee
Valeo Thermique Moteur SA
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 Valeo Thermique Moteur SA filed Critical Valeo Thermique Moteur SA
Publication of EP0473475A1 publication Critical patent/EP0473475A1/de
Application granted granted Critical
Publication of EP0473475B1 publication Critical patent/EP0473475B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • F28F9/0256—Arrangements for coupling connectors 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
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/02—Header boxes; End plates
    • F28F9/0234—Header boxes; End plates having a second heat exchanger disposed there within, e.g. oil cooler
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S165/00—Heat exchange
    • Y10S165/916—Oil cooler

Definitions

  • the invention relates to an assembly, in particular for motor vehicles, comprising a water box of a main heat exchanger and a secondary heat exchanger with two connection pipes.
  • the main heat exchanger is traversed by a first fluid, while the secondary heat exchanger is traversed by a second fluid which is cooled by the first fluid.
  • the first fluid is the coolant of a heat engine
  • the second fluid can be an engine lubricating oil, a gearbox oil or an oil from a converter. of couple.
  • the coolant not only performs its usual function of cooling the engine, but also an additional function of cooling a fluid linked to the operation of the vehicle.
  • the secondary heat exchanger is introduced through an open face of the water box and the latter is then connected to the body or to the bundle of the main heat exchanger.
  • the secondary heat exchanger comprises two connecting pipes, respectively serving for the inlet and the outlet of the second fluid, this pipe passing through sealing two orifices of a wall of the water box and serving for fixing and holding of the secondary heat exchanger inside the water box.
  • each connecting pipe comprises a threaded part which is screwed into a thread on the base.
  • the latter bears against the internal face of the wall of the water box with the interposition of two seals which are compressed under the action of the tightening force exerted by a nut which is screwed onto another threaded part of the tubing, pressing against the external face of the wall of the water box.
  • the object of the invention is in particular to remedy the above drawbacks.
  • connection tubing can be attached very simply to the secondary heat exchanger since it suffices to introduce, from the outside of the water box, the terminal part of the tubing successively into the orifice of the wall of the water box and in the drilling of the base, then to cause the radial expansion of this end part in the drilling by an appropriate tool.
  • connection tube comprises an intermediate part having a collar suitable for bearing against the wall of the water box, around the orifice and on the outside of the water box, this intermediate part extending, d 'one side, by the deformable end part and, on the opposite side, by a connecting piece.
  • the deformable end part is limited by an initially cylindrical external face and by an initially frustoconical internal face whose diameter decreases in the direction of the free end of the end part.
  • the initially cylindrical external face of the terminal part is connected, on the side opposite its free end, to a frustoconical external face whose diameter increases in the direction of the flange, while the initially frustoconical internal face of the part
  • the terminal is connected, on the side opposite its free end, to an internal cylindrical face of an intermediate passage which extends partly inside the tubing.
  • connection zone of smaller thickness is thus produced between the intermediate part and the terminal part of the connection tube, which facilitates its radial expansion during the crimping operation.
  • the end part is suitable for being radially expanded so that, after crimping, the initially frustoconical internal face of the end part becomes substantially cylindrical and thus extends the internal cylindrical face of the intermediate passages.
  • FIG. 1 shows a water box 10 of a main heat exchanger, for example the water box of a cooling radiator of an internal combustion engine.
  • the water box comprises a bottom wall 12 on which depend in particular two side walls 14 and 16 which define an open face limited by an edge 18 of generally rectangular outline.
  • the water box 10 is intended to be assembled by its edge 18 on a collecting plate 20 into which flow tubes 22 which form the bundle of the main heat exchanger and which, in the example, are traversed by the vehicle engine coolant.
  • the water box 10 internally contains a secondary heat exchanger 24 intended to allow the cooling of a fluid different from that circulating through the tubes 22.
  • the fluid circulating in the secondary heat exchanger 24 may be an oil gearbox lubrication.
  • the secondary heat exchanger 24 is constituted by a stack of half-blades 26, 28 which are brazed together and which define at their ends elementary collecting chambers 30 whose walls are perforated so that they communicate, on the one hand, with each other, and on the other hand, with two distributor tubes 32 forming a tie rod, only one of which is visible in the attached drawing.
  • the tube 32 comprises a cutout 34 extending over substantially its entire length and serving to communicate the fluid from one chamber to the other.
  • Each tube 32 is closed at one end by a cover 36 to which it is brazed and which is also brazed to the last half-blade 28a.
  • the tube is closed, at its other end, by a ring-shaped base 38, to which it is brazed, this base also being brazed on the first half-blade 26a.
  • the base 38 comprises a cylindrical bore 40 coaxial with the tube 32, the diameter of the bore 40 being less than the internal diameter of the distributor tube 32.
  • the base 38 has an annular face 42 capable of bearing against an internal face 44 of the wall 14.
  • the wall 14 comprises two passage orifices 46, only one of which is visible in the drawing, which have exactly the same center distance as that of the two holes 40 of the secondary heat exchanger 24.
  • the passage orifices 46 have an internal diameter greater than the internal diameter of the holes 40.
  • the wall 14 has an external face 48 which is provided with a projecting crown 50 which extends coaxially with the passage orifice 46.
  • the crown 50 comprises an external face 52 generally annular which opens onto an internal face 54 generally cylindrical and which is provided with two bosses 56 parallel to each other (FIG. 2).
  • the cylindrical face 54 and its two bosses 56 are connected to the bore 46 by a shoulder 58 of generally annular shape.
  • the device shown in Figure 1 further comprises two connecting pipes 60, only one of which is visible in the drawing, which seal the wall 14 and by which the secondary heat exchanger 24 is fixed inside the water box 10.
  • Each of the pipes 60 is attached to the heat exchanger 24 by being successively introduced through the orifices 46 of the wall 14 and into a bore 40 of a base 38 to which it is then fixed by crimping, as this will be described later.
  • connection tube 60 (FIG. 3) comprises an intermediate part 62 provided with a flange 64, this intermediate part being extended on one side by a deformable end part 66 and on the other side by a connecting end piece 68.
  • the end part 66 is limited by an external face 70 initially cylindrical and by an internal face 72 initially frustoconical, the diameter of which decreases in the direction of an annular face 74 which constitutes the free end of the terminal part 66.
  • the initially cylindrical external face 70 is connected, on the side opposite its free end, to an external frustoconical face 76 whose diameter increases in the direction of the flange 64.
  • the initially frustoconical internal face 72 of the terminal part 66 is connected, on the side opposite its free end 74, to a cylindrical internal face 78 forming an intermediate passage inside the tube 60.
  • the intermediate part 62 and the end part 66 are connected together by an annular zone 80 thinner.
  • the flange 64 has an annular face 82 which is connected with a peripheral face 84 of generally cylindrical shape provided with two flats 86.
  • the peripheral face 84 is connected, by an annular face 87, to a cylindrical face 88 which constitutes the external face of the end piece 68.
  • the latter has an internal thread 90 which is connected with the internal face 78 by means of a frustoconical part 92.
  • connection tube 60 is made of a deformable metal, for example aluminum, so that the end part 66 can be expanded radially by means of an appropriate tool, this expansion being favored by the presence of the zone 80 more thin.
  • a tool 94 having a rod 96 extended by a head 98.
  • the latter comprises a frustoconical part 98a whose end of smaller diameter (d) is connected to the rod 96 and the other end of larger diameter (D) is connected to a part 98b having substantially the shape of a spherical cap.
  • the diameter d of the tool corresponds approximately to the internal diameter of the terminal part 66 at its free end 74 while the diameter D of the tool corresponds approximately to the internal diameter of the intermediate passage defined by the cylindrical part 78.
  • the secondary heat exchanger 24 is introduced through the open face of the water box 10 and the heat exchanger 24 is positioned so that the holes 40 of the bases 38 are in the axial alignment of the orifices 46 of the wall 14.
  • the two tubes 60 are then introduced, either simultaneously or successively, by providing the tube with the tool 94 as shown in FIG. 3.
  • the end part 66 successively passes through the orifice of passage 46 of the wall 14 and the bore 40 of the base 38 until the annular face 82 of the flange 64 bears against the annular face 58 of the wall 14.
  • an O-ring seal 100 is placed in the annular space formed between the frustoconical external face 76 of the intermediate part 62, the orifice 46 of the wall 14 and the bearing face 42 of the base 38.
  • the flange 64 thus comes into abutment in its housing and flats 86 of the collere head cooperate with the bosses 56 of the crown 52 to prevent rotation of the tubing about its axis.
  • the O-ring 100 is compressed and provides sealing at the connection between the wall 14, the base 38 and the tube 60.
  • the base 38 being applied by its face 42 against the internal face 44 of the wall 14, there is exerted on the rod 96 of the tool 94 a traction in the direction of the arrow F.
  • the frustoconical part 98a of the head 98 causes thus the radial expansion of the terminal part 66 so that the internal face 72, which was initially frustoconical, becomes substantially cylindrical and in the extension of the face internal cylindrical 78 as shown in Figure 4.
  • the internal face 70, initially cylindrical, of the end part 66 is folded outwards and ensures the crimping of the end part 66 on the base 38.
  • the crimping operation must be carried out with a different tool.
  • the head of the tool should have a shape substantially different from that of the head 98, for example an olive shape.
  • the crimping would be carried out during the tool insertion movement, the latter then being pulled out by being moved in the direction of the arrow F.
  • the water box 10 can be connected by its open face to the collecting plate 20, in a manner known per se.

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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)

Claims (9)

  1. Vorrichtung mit einem Wasserkasten für einen ersten Wärmetauscher und einem zweiten Wärmetauscher (24) mit zwei Anschlußstutzen (60), die abgedichtet durch eine Wand (14) des Wasserkastens (10) hindurchgehen und mit denen der zweite Wärmetauscher (24) im Wasserkasten (10) befestigt ist, wobei jeder der Stutzen (60) am zweiten Wärmetauscher durch Einführung in eine Durchgangsöffnung (46) in der Wand (14) des Wasserkastens und Befestigung in einer Fußplatte (38) des zweiten Wärmetauschers (24) mittels radialer Spreizung eines verformbaren Endteils (66) jedes Anschlußstutzens (60) in einer Bohrung (40) der besagten Fußplatte (38) angesetzt ist.
  2. Vorrichtung nach Anspruch 1 , dadurch gekennzeichnet, daß jeder Anschlußstutzen (60) einen Zwischenteil (62) mit einem Kragen (64) umfaßt, der an der Wand (14) des Wasserkastens (10) um die Durchgangsöffnung (46) herum an der Außenseite des Wasserkastens zur Anlage kommen kann, wobei dieser Zwischenteil (62) auf einer Seite in einen verformbaren Endteil (66) und auf der entgegengesetzten Seite in einen Verbindungsansatz (68) übergeht.
  3. Vorrichtung nach Anspruch 2 , dadurch gekennzeichnet, daß der Endteil (66) durch eine anfänglich zylindrische Außenfläche (70) und durch eine anfänglich kegelstumpfförmige Innenfläche (72) begrenzt wird, deren Durchmesser sich in Richtung des freien Endes (74) des Endteils (66) verringert.
  4. Vorrichtung nach Anspruch 3 , dadurch gekennzeichnet, daß sich die anfänglich zylindrische Außenfläche (70) des Endteils (66) auf der zu seinem freien Ende (74) entgegengesetzten Seite an eine kegelstumpfförmige Außenfläche (76) anschließt, deren Durchmesser sich in Richtung des Kragens (64) fortschreitend vergrößert, und daß sich die anfänglich kegelstumpfförmige Innenfläche (72) des Endteils (66) auf der zu seinem freien Ende (74) entgegengesetzten Seite an eine zylindrische Innenfläche (78) eines Zwischendurchgangs anschließt, der sich teilweise im Innern des Stutzens (60) erstreckt, wodurch ein ringförmiger Anschlußbereich (80) mit geringerer Dicke zwischen dem Zwischenteil (62) und dem Endteil (66) gebildet werden kann.
  5. Vorrichtung nach Anspruch 4 , dadurch gekennzeichnet, daß der Endteil (66) radial so gespreizt werden kann, daß nach der Falzung die anfänglich kegelstumpfförmige Innenfläche (72) des Endteils (66) in etwa zylindrisch wird, wobei sie die zylindrische Innenfläche (78) des Zwischendurchgangs verlängert.
  6. Vorrichtung nach Anspruch 4 oder 5 , dadurch gekennzeichnet, daß sie einen Runddichtring (100) umfaßt, der in einem ringförmigen Zwischenraum zwischen der kegelstumpfförmigen Außenfläche (76) des Zwischenteils (62), der Durchgangsöffnung (46) in der Wand (14) des Wasserkastens und der Fußplatte (38) eingesetzt ist.
  7. Vorrichtung nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß jeder Anschlußstutzen (60) aus einem verformbaren Metall, insbesondere aus Aluminium, geformt ist.
  8. Vorrichtung nach Anspruch 2 , dadurch gekennzeichnet, daß der Kragen (64) in eine Aufnahme (54, 56, 58) mit geeigneter Form eingesetzt werden kann, die an der Wand (14) des Wasserkastens (10) um die Durchgangsöffnung (46) herum auf der Außenseite des Wasserkastens vorgesehen ist.
  9. Vorrichtung nach Anspruch 8 , dadurch gekennzeichnet, daß der Kragen (64) mindestens eine Abflachung (86) umfaßt, die mit einem entsprechend der Aufnahme geformten Vorsprung (56) zusammenwirken kann, um die Drehsicherung des Stutzens (60) in der Wand (14) des Wasserkastens herbeizuführen.
EP91402077A 1990-07-31 1991-07-25 Vorrichtung mit einem Wasserkasten für einen ersten Wärmetauscher und einem zweiten Wärmetauscher Expired - Lifetime EP0473475B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9009767A FR2665524B1 (fr) 1990-07-31 1990-07-31 Boite a eau d'un echangeur de chaleur principal, notamment pour vehicules automobiles, contenant un echangeur de chaleur secondaire.
FR9009767 1990-07-31

Publications (2)

Publication Number Publication Date
EP0473475A1 EP0473475A1 (de) 1992-03-04
EP0473475B1 true EP0473475B1 (de) 1994-12-14

Family

ID=9399277

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91402077A Expired - Lifetime EP0473475B1 (de) 1990-07-31 1991-07-25 Vorrichtung mit einem Wasserkasten für einen ersten Wärmetauscher und einem zweiten Wärmetauscher

Country Status (5)

Country Link
US (1) US5151157A (de)
EP (1) EP0473475B1 (de)
DE (1) DE69105874T2 (de)
ES (1) ES2068534T3 (de)
FR (1) FR2665524B1 (de)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5513700A (en) * 1994-07-29 1996-05-07 Ford Motor Company Automotive evaporator manifold
US6109344A (en) * 1998-05-18 2000-08-29 Lattimore & Tessmer, Inc. Heat exchanger with an integrated tank and head sheet
US6347663B1 (en) * 2000-03-13 2002-02-19 Modine Manufacturing Company Fitting/manifold assembly and method for a heat exchanger
US6776225B2 (en) * 2002-06-13 2004-08-17 Delphi Technologies, Inc. Heat exchanger assembly
JP2005172270A (ja) * 2003-12-08 2005-06-30 Calsonic Kansei Corp オイルクーラ内蔵ラジエータ
US7213640B2 (en) * 2005-04-07 2007-05-08 Delphi Technologies, Inc. Heat exchanger assembly having fitting secured thereto and method of securing the same
US7188664B2 (en) * 2005-04-21 2007-03-13 Delphi Technologies, Inc. Aluminum radiator tank with oil cooler clinch fitting
JP4722577B2 (ja) * 2005-06-21 2011-07-13 カルソニックカンセイ株式会社 オイルクーラ
EP1739380B1 (de) * 2005-06-21 2012-03-21 Calsonic Kansei Corporation Ölkühler
KR20220104441A (ko) * 2021-01-18 2022-07-26 현대자동차주식회사 라디에이터-인터쿨러 통합모듈 및 이를 포함하는 차량
DE102022212148A1 (de) * 2022-11-15 2024-05-16 Mahle International Gmbh Crimp-Werkzeug und damit hergestellter Wärmeübertrager

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2269895A (en) * 1939-07-05 1942-01-13 Foster Arthur Sydney Pipe joint
US2566502A (en) * 1945-04-13 1951-09-04 Mueller Co Corporation stop and method of installing
US3216492A (en) * 1961-07-03 1965-11-09 John M Weaver Exchange unit
US4227570A (en) * 1979-10-01 1980-10-14 Caterpillar Tractor Co. Heat exchange structure
GB2122706B (en) * 1982-06-19 1986-08-13 Unipart Group Ltd Heat exchanger coupling
FR2549593B1 (fr) * 1983-07-22 1987-04-10 Chausson Usines Sa Boite a eau d'echangeur de chaleur contenant un echangeur de chaleur secondaire
US4538679A (en) * 1984-11-19 1985-09-03 John T. Hoskins Fluid coupling assembly
FR2579309B1 (fr) * 1985-03-21 1989-04-07 Valeo Boite a eau d'un echangeur de chaleur pour vehicule automobile, contenant un radiateur d'huile

Also Published As

Publication number Publication date
EP0473475A1 (de) 1992-03-04
DE69105874D1 (de) 1995-01-26
DE69105874T2 (de) 1995-04-27
US5151157A (en) 1992-09-29
ES2068534T3 (es) 1995-04-16
FR2665524B1 (fr) 1992-10-16
FR2665524A1 (fr) 1992-02-07

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