EP1890103B1 - Rohrverbindungsstruktur für einen Wärmetauscher - Google Patents

Rohrverbindungsstruktur für einen Wärmetauscher Download PDF

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Publication number
EP1890103B1
EP1890103B1 EP06254169A EP06254169A EP1890103B1 EP 1890103 B1 EP1890103 B1 EP 1890103B1 EP 06254169 A EP06254169 A EP 06254169A EP 06254169 A EP06254169 A EP 06254169A EP 1890103 B1 EP1890103 B1 EP 1890103B1
Authority
EP
European Patent Office
Prior art keywords
spigot
connection pipe
header tank
end region
connecting structure
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.)
Active
Application number
EP06254169A
Other languages
English (en)
French (fr)
Other versions
EP1890103A1 (de
Inventor
Jamil Ben Hamida
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.)
Delphi Technologies Inc
Original Assignee
Delphi Technologies Inc
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 Delphi Technologies Inc filed Critical Delphi Technologies Inc
Priority to DE602006012480T priority Critical patent/DE602006012480D1/de
Priority to EP06254169A priority patent/EP1890103B1/de
Priority to AT06254169T priority patent/ATE458979T1/de
Publication of EP1890103A1 publication Critical patent/EP1890103A1/de
Application granted granted Critical
Publication of EP1890103B1 publication Critical patent/EP1890103B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • F28F2275/02—Fastening; Joining by using bonding materials; by embedding elements in particular materials
    • F28F2275/025—Fastening; Joining by using bonding materials; by embedding elements in particular materials by using adhesives
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2275/00—Fastening; Joining
    • F28F2275/04—Fastening; Joining by brazing
    • 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
    • F28F2275/12—Fastening; Joining by methods involving deformation of the elements

Definitions

  • the present invention relates to a pipe connecting structure for a heat exchanger, such as a charge air cooler for a turbo-charged internal combustion engine in a vehicle and to a method of joining a connection pipe to a header tank of a heat exchanger.
  • FR-2654816 discloses a pipe connecting structure as defined in the preamble of claim 1.
  • Turbochargers are frequently used in order to compress more air within engine cylinders of an internal combustion engine to allow more efficient combustion with fuel, reducing wasteful emissions and increasing the power gained from each piston stroke.
  • a consequence of compressing air is that its temperature increases which reduces the density of the charge air, increases nitrous oxide emissions and can lead to premature aging of the engine.
  • charge air coolers comprise a plurality of tubes of a generally rectangular cross-section and having fins therebetween for dissipating heat.
  • the ends of the tubes extend beyond the fins and are received through apertures provided in the sides of elongate hollow header tanks.
  • Each header tank is provided with a connection pipe fitting to allow a hose to be connected to each header tank for delivering charge air to and from the charge air cooler.
  • the tubes and header tanks are typically formed from one or more aluminium or steel sections, pressed, extruded or cast into the desired shapes.
  • the header tank connection pipes are typically fitted into corresponding apertures formed in the respective header tank and secured and sealed to the header tank by brazing.
  • Such process involves inserting the connection pipe into the aperture in the header tank to a desired depth, often defined by a circumferential lip provided on the outer surface of the connection pipe, and then carefully brazing the connection pipe to the header tank.
  • Such operation is time consuming and prone to leakage if the brazing operation is not carried out correctly.
  • the abrupt change in diameter of the flow passage as the charge air passes from the connection pipe into the header tank can lead to a sudden pressure drop and turbulence within the header tank.
  • a pipe connecting structure for a header tank of a heat exchanger having a connection opening
  • the connecting structure comprising a spigot or stub formed integrally with the header tank and projecting from the connection opening of the header tank, and a connection pipe securable to the spigot, said spigot having an internal diameter substantially equal to the internal diameter of the connection pipe, an end region of the connection pipe being enlarged to a greater diameter than the remainder of the connection pipe to enable said end region to fit over the spigot.
  • the axial length of the enlarged end region of the connection pipe is substantially equal to or less than the axial length of the spigot.
  • connection pipe is joined to the spigot by brazing or by means of a suitable adhesive.
  • the transition between the spigot and the body of the header tank defines a radius of curvature to minimise turbulence and reduce the pressure drop through the connection pipe.
  • a method of joining a connection pipe to a header tank of a heat exchanger comprising the steps of forming an outwardly projecting spigot on a body of the header tank, said spigot defining an opening in the header tank, said spigot having an internal diameter substantially equal to the internal diameter of a connection pipe, enlarging an end region of the connection pipe so that the end region has an internal diameter substantially equal to the external diameter of the spigot, locating the enlarged end region of the connection pipe over the spigot and securing the end region of the connection pipe to the spigot.
  • the axial length of the enlarged end region of the connection pipe is substantially equal to or less than the axial length of the spigot.
  • connection pipe is secured to the spigot by brazing.
  • connection pipe may be secured to the spigot by means of a suitable adhesive.
  • the pipe connection structure and method according to the present invention provide easier manufacture of the heat exchanger and provide a clear visual indication of correct assembly of the connection pipe to the header tank prior to brazing while enhancing fluid flow within the connection pipe and at the junction of the connection pipe and the header tank.
  • a header tank 1 of a charge air cooler comprises a hollow body 2 formed from pressed metal sheet material, such as aluminium, having a plurality of slots 3 formed in one elongate side for insertion of a plurality of hollow elongate rectangular heat exchange tubes (not shown).
  • a similar header tank is connected to the other end of the heat exchange tubes to form the charge air cooler.
  • aluminum as used herein and in the claims includes pure aluminum and aluminum alloys.
  • An opening of the header tank is defined by a tubular outwardly extending spigot 4 formed integrally with the body 2 of the header tank 1, for example by pressing.
  • the transition between the spigot 4 and the body 2 of the header tank 1 is defined by a smooth radius providing a smooth flow path for air passing into and out of the header tank.
  • the internal diameter of the spigot 4 is substantially equal to the internal diameter of a connection pipe 10 to be fitted to the header tank 1 to provide a pipe connection fitting to enable a charge air delivery conduit to be attached to the header tank 1.
  • An end region 11 of the connection pipe 10 is enlarged to fit over the spigot 4, the inner diameter of the enlarged end region 11 of the connection pipe 10 being substantially equal to the outer diameter of the spigot 4.
  • connection pipe 10 The axial length of the enlarged end region 11 of the connection pipe 10 is slightly less than the axial length of the spigot 4 so that the connection pipe 10 can be pushed over the spigot 4 until the end of the spigot 4 abuts the transition 12 between the enlarged end region 11 of the connection pipe 10 and the remainder of the connection pipe 10 to provide a smooth flow passage through the connection structure.
  • connection pipe 10 Once the connection pipe 10 has been pushed over the spigot 4 it can be secured thereto by brazing, the large overlap between the spigot and the connection pipe providing a large contact area to ensure the production of a reliable seal between the connection pipe 10 and header tank 1.
  • a suitable adhesive may be applied between the enlarged end portion 11 of the connection pipe 10 and the spigot 4.
  • pipe connection structure of the present invention is equally applicable to other types of heat exchanger for cooling or heating other fluids and for other applications, such as engine coolant systems and air conditioning systems.

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  • 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)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)

Claims (9)

  1. Rohrverbindungsstruktur für eine Endkammer (1) eines Wärmetauschers, wobei die Verbindungsstruktur einen Zapfen oder Stutzen (4) aufweist, der aus der Verbindungsöffnung der Endkammer herausragt, und ein Anschlussrohr (10), das an dem Zapfen (4) befestigt werden kann, wobei der Zapfen (4) einen inneren Durchmesser hat, der im Wesentlichen gleich zu dem internen Durchmesser des Anschlussrohres (10) ist, wobei ein Endbereich (11) des Anschlussrohres (10) auf einen größeren Durchmesser als der Rest des Anschlussrohres vergrößert ist, damit der Endbereich (11) über den Zapfen (4) passt, dadurch gekennzeichnet, dass der Zapfen oder Stutzen (4) integral mit der Endkammer ausgebildet ist.
  2. Rohrverbindungsstruktur gemäß Anspruch 1, wobei die axiale Länge des vergrößerten Endbereichs (11) des Anschlussrohres (10) im Wesentlichen gleich oder geringer ist als die axiale Länge des Zapfens (4).
  3. Rohrverbindungsstruktur gemäß einem vorhergehenden Anspruch, wobei zumindest ein Teil der Endkammer (1), der Zapfen (4) und das Anschlussrohr (10) aus einem Metall ausgebildet sind.
  4. Rohrverbindungsstruktur gemäß Anspruch 3, wobei das Metall Aluminium ist.
  5. Rohrverbindungsstruktur gemäß einem vorhergehenden Anspruch, wobei der vergrößerte Endbereich (11) des Anschlussrohres (10) mit dem Zapfen durch Löten oder mittels eines geeigneten Klebemittels verbunden ist.
  6. Rohrverbindungsstruktur gemäß einem vorhergehenden Anspruch, wobei der Übergang zwischen dem Zapfen (4) und dem Gehäuse der Endkammer (1) einen Krümmungsradius definiert, um eine Turbulenz zu minimieren und den Druckabfall durch das Anschlussrohr zu reduzieren.
  7. Verfahren zum Verbinden eines Anschlussrohres mit einer Endkammer eines Wärmetauschers, das die Schritte aufweist eines Bildens eines nach außen vorstehenden Zapfens (4) an einem Gehäuse (2) der Endkammer (1) und integral mit der Endkammer ausgebildet, wobei der Zapfen eine Öffnung in der Endkammer definiert, wobei der Zapfen (4) einen inneren Durchmesser hat, der im Wesentlichen gleich zu dem internen Durchmesser eines Anschlussrohres (10) ist, Vergrößern eines Endbereichs (11) des Anschlussrohres (10), so dass der Endbereich einen inneren Durchmesser hat, der im Wesentlichen gleich zu dem externen Durchmesser des Zapfens (4) ist, Platzieren des vergrößerten Endbereichs (11) des Anschlussrohres (10) über den Zapfen (4) und Befestigen des Endbereichs des Anschlussrohres an dem Zapfen.
  8. Verfahren gemäß Anspruch 7, wobei die axiale Länge des vergrößerten Endbereichs (11) des Anschlussrohres im Wesentlichen gleich oder geringer ist als die axiale Länge des Zapfens (4).
  9. Verfahren gemäß Anspruch 7 oder Anspruch 8, wobei das Anschlussrohr (10) mit dem Zapfen (4) durch Löten oder mittels eines geeigneten Klebemittels verbunden ist.
EP06254169A 2006-08-08 2006-08-08 Rohrverbindungsstruktur für einen Wärmetauscher Active EP1890103B1 (de)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DE602006012480T DE602006012480D1 (de) 2006-08-08 2006-08-08 Rohrverbindungsstruktur für einen Wärmetauscher
EP06254169A EP1890103B1 (de) 2006-08-08 2006-08-08 Rohrverbindungsstruktur für einen Wärmetauscher
AT06254169T ATE458979T1 (de) 2006-08-08 2006-08-08 Rohrverbindungsstruktur für einen wärmetauscher

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP06254169A EP1890103B1 (de) 2006-08-08 2006-08-08 Rohrverbindungsstruktur für einen Wärmetauscher

Publications (2)

Publication Number Publication Date
EP1890103A1 EP1890103A1 (de) 2008-02-20
EP1890103B1 true EP1890103B1 (de) 2010-02-24

Family

ID=37891488

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06254169A Active EP1890103B1 (de) 2006-08-08 2006-08-08 Rohrverbindungsstruktur für einen Wärmetauscher

Country Status (3)

Country Link
EP (1) EP1890103B1 (de)
AT (1) ATE458979T1 (de)
DE (1) DE602006012480D1 (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111397406A (zh) * 2018-12-28 2020-07-10 丹佛斯有限公司 板式换热器

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3897821A (en) * 1973-08-03 1975-08-05 Barry Wehmiller Co Heat transfer coil
FR2654816B1 (fr) * 1989-11-22 1992-02-14 Valeo Procede d'assemblage des extremites des tubes d'un faisceau d'echangeur de chaleur avec un jeu de tubulures de raccordement, et echangeur de chaleur ainsi obtenu.
JP4689065B2 (ja) * 2001-03-26 2011-05-25 カルソニックカンセイ株式会社 管体の仮固定構造
CA2366227C (en) * 2001-12-27 2007-12-04 John W. Izard Mounting bracket for heat exchanger cores

Also Published As

Publication number Publication date
DE602006012480D1 (de) 2010-04-08
ATE458979T1 (de) 2010-03-15
EP1890103A1 (de) 2008-02-20

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