EP0589782A2 - Mechanische Montage eines Wärmetauscherrohres sowie derart hergestellter Wärmetauscher - Google Patents

Mechanische Montage eines Wärmetauscherrohres sowie derart hergestellter Wärmetauscher

Info

Publication number
EP0589782A2
EP0589782A2 EP19930402308 EP93402308A EP0589782A2 EP 0589782 A2 EP0589782 A2 EP 0589782A2 EP 19930402308 EP19930402308 EP 19930402308 EP 93402308 A EP93402308 A EP 93402308A EP 0589782 A2 EP0589782 A2 EP 0589782A2
Authority
EP
European Patent Office
Prior art keywords
tube
wall
heat exchanger
thickness
tubes
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Withdrawn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
EP19930402308
Other languages
English (en)
French (fr)
Other versions
EP0589782A3 (de
Inventor
Gilbert Lelievre
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 EP0589782A2 publication Critical patent/EP0589782A2/de
Publication of EP0589782A3 publication Critical patent/EP0589782A3/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Withdrawn legal-status Critical Current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
    • F28F9/04—Arrangements for sealing elements into header boxes or end plates
    • F28F9/06—Arrangements for sealing elements into header boxes or end plates by dismountable joints
    • F28F9/14—Arrangements for sealing elements into header boxes or end plates by dismountable joints by force-joining

Definitions

  • the invention relates to a tube suitable for being part of a heat exchanger, in particular for a motor vehicle. It also relates to a heat exchanger comprising such tubes.
  • heat exchanger tube comprising a body delimited by a tubular wall and extended by at least one end adapted to be introduced into a hole of a collector plate, also called a hole plate, with interposition of a seal. compressible seal.
  • a beam is formed which is generally assembled with two manifold plates, each of which is connected to a wall of a water box.
  • a heat exchanger of this type is used in particular in the automotive industry to form either a radiator for cooling a motor vehicle engine, or a radiator for heating the passenger compartment.
  • the bundle tubes are usually traversed by a fluid used for cooling the engine, for example water with an antifreeze, while a flow of air scans the bundle tubes.
  • a fluid used for cooling the engine for example water with an antifreeze
  • each end of the tube has sufficient mechanical strength to ensure compression of the joint, without that this end is deformed, which would cause a loss of tightness in the connection area of the tube end and the collector plate.
  • the invention provides for this purpose a heat exchanger tube of the type mentioned above, in which the end of the tube is transformed to have a wall thickness greater than the wall thickness of the body of the tube.
  • the end of the tube thus has a thickness greater than that of the tube before transformation, which increases its resistance.
  • the end of the tube has a double wall obtained by turning the wall of the tube over a limited length.
  • This reversal can be obtained by using several punches of appropriate shape gradually causing the wall to turn outwards from the tube.
  • the thickness of the double wall thus obtained is greater than or equal to twice the thickness of the wall of the body of the tube.
  • the end of the tube results from a reduction in the section of the tube relative to the section of the body of the tube, leading to an increase in the thickness of the wall of the tube to its transformed end.
  • This reduction in section can be obtained by inserting the end of the tube into one or more rings with a conical entry, which has the effect of tightening the end section of the tube and gradually increasing the thickness of its wall.
  • the thickness of the wall of the transformed end is generally less than twice the thickness of the wall of the body of the tube.
  • the latter is formed in a deformable metallic material, for example aluminum or aluminum alloy.
  • the invention in another aspect, relates to a heat exchanger comprising a multiplicity of tubes as defined above, the respective ends of which are assembled mechanically to at least one header plate.
  • the invention relates in particular to a heat exchanger comprising a collector plate provided with holes surrounded by a collar, said collector plate receiving a seal with a multiplicity of compressible collars capable of sealing between the ends of the tubes and the collars, and in which the thickened ends of the tubes are in contact with the compressible collars.
  • FIG. 1 represents a tube 10 intended to form part of a heat exchanger and comprising a body 12 delimited by a tubular wall and extended by at least one end 14. The latter is transformed by inverting the wall of the tube towards the outside of the latter over a limited length l. Over the entire length l, the end 14 has a double wall having a thickness e 'greater than or equal to 2e, e representing the thickness of the wall of the body of the tube, which is also the thickness of the end of the tube before transformation.
  • the transformation of the end 14 can be obtained by successively using several punches of suitable shape causing the wall to turn gradually.
  • FIG. 2 shows, by way of example, a punch 16 used in an intermediate phase of transformation.
  • This punch 16 has, in the example, a head 18 of generally frustoconical shape making it possible to flare the end edge 20 of the tube before then folding it down as shown by the arrows F by other punches (not shown).
  • the heat exchanger shown in FIG. 3, to which we now refer, comprises a collecting plate 24 through which a multiplicity of holes 26 are formed, each of which is surrounded by a collar 28.
  • each of the holes 26 is introduced the end 14 of a tube 10 as defined above, the tubes 10 forming a bundle of parallel tubes which pass through a multiplicity of fins 30.
  • the collector plate 24 receives a seal 32 comprising, in correspondence of the collars 28 of the collector plate 24, a multiplicity of compressible collars 34. Each collar 34 of the seal is thus compressed in the annular space between the end 14 , of thickness e ', of a tube 10 and a collar 28 of the collecting plate 24.
  • the body 12 of the tube can have a circular or non-circular section and, similarly, the section of the end 14 can be circular or non-circular.
  • the collector plate 24 preferably has a rectangular shape and it has, on its periphery, a folded edge 36 forming a groove for receiving a peripheral bead 38 of the joint 32.
  • the groove thus formed receives a peripheral rim 40 forming part of a wall 42 of water box. This rim 40 is held by the folded edge 36 which compresses the bead 38 of the joint.
  • the body 12 of the tube 10 is extended by at least one end 44 which is transformed to have a wall thickness greater than the wall thickness of the body of the tube.
  • the end 44 results from a reduction in the cross-section of the tube relative to the cross-section of the body of the tube, which leads to an increase in the thickness of the wall of the tube at its transformed end.
  • the end 44 thus has a wall thickness e 'which is greater than the wall thickness e of the body 12, while generally being less than twice the thickness e of the body of the tube.
  • This reduction in cross-section can be applied to sections of circular or non-circular shape. It is obtained by forcibly introducing the end of the tube into one or more rings 46 as shown in FIG. 5.
  • the ring 46 has a frustoconical inlet 48 and is extended by a cylindrical passage 50 suitable for transforming the end of the tube. When the latter is forcefully introduced into the ring 46, the end wall tightens and its thickness gradually increases.
  • the end 44 of the tube 10 in FIG. 4 can be introduced into a hole in a collector plate in the same way as the end 14 as shown in FIG. 3.
  • Reducing the end section of the tube has the further advantage of reducing the size of the collector plate.
  • the tube is made of a deformable metallic material, for example aluminum or aluminum alloy.
  • the end of the tube may have a circular or non-circular shape, for example oval or elliptical, which is not necessarily the same as that of the body of the tube.
  • the transformation of the tubes can be carried out either individually on each tube, or preferably simultaneously on all the ends of the tubes already grouped in bundle.
  • the assembly of the bundle is then carried out in a manner known per se to form a heat exchanger which can be used in particular on motor vehicles.

Landscapes

  • 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)
EP19930402308 1992-09-22 1993-09-21 Mechanische Montage eines Wärmetauscherrohres sowie derart hergestellter Wärmetauscher. Withdrawn EP0589782A3 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9211273 1992-09-22
FR9211273A FR2695990B1 (fr) 1992-09-22 1992-09-22 Tube pour échangeur de chaleur à assemblage mécanique et échangeur de chaleur ainsi obtenu.

Publications (2)

Publication Number Publication Date
EP0589782A2 true EP0589782A2 (de) 1994-03-30
EP0589782A3 EP0589782A3 (de) 1995-04-26

Family

ID=9433751

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19930402308 Withdrawn EP0589782A3 (de) 1992-09-22 1993-09-21 Mechanische Montage eines Wärmetauscherrohres sowie derart hergestellter Wärmetauscher.

Country Status (4)

Country Link
EP (1) EP0589782A3 (de)
BR (1) BR9303856A (de)
FR (1) FR2695990B1 (de)
MX (1) MX9305796A (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5901784A (en) * 1995-11-02 1999-05-11 Valeo Thermique Moteur Heat exchanger with oval or oblong tubes, and a method of assembly of such a heat exchanger
FR2854431A1 (fr) * 2003-04-29 2004-11-05 Faurecia Sys Echappement Organe de ligne d'echappement d'un vehicule automobile.

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR581093A (fr) * 1924-02-22 1924-11-21 Système de tube démontable pour radiateurs automobiles
GB741625A (en) * 1953-06-30 1955-12-07 Norman Isherwood & Company Ltd Improvements relating to the mounting of tubes detachably in plates
DE3545554A1 (de) * 1985-12-21 1987-07-02 Sueddeutsche Kuehler Behr Rohr-boden-verbindung, insbesondere fuer waermetauscher
EP0302353A1 (de) * 1987-08-06 1989-02-08 Siemens Aktiengesellschaft Wärmetauscherrohr

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR581093A (fr) * 1924-02-22 1924-11-21 Système de tube démontable pour radiateurs automobiles
GB741625A (en) * 1953-06-30 1955-12-07 Norman Isherwood & Company Ltd Improvements relating to the mounting of tubes detachably in plates
DE3545554A1 (de) * 1985-12-21 1987-07-02 Sueddeutsche Kuehler Behr Rohr-boden-verbindung, insbesondere fuer waermetauscher
EP0302353A1 (de) * 1987-08-06 1989-02-08 Siemens Aktiengesellschaft Wärmetauscherrohr

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5901784A (en) * 1995-11-02 1999-05-11 Valeo Thermique Moteur Heat exchanger with oval or oblong tubes, and a method of assembly of such a heat exchanger
US6044554A (en) * 1995-11-02 2000-04-04 Valeo Thermique Moteur Method of assembly of a heat exchanger with oval or oblong tubes
FR2854431A1 (fr) * 2003-04-29 2004-11-05 Faurecia Sys Echappement Organe de ligne d'echappement d'un vehicule automobile.
WO2004097191A2 (fr) * 2003-04-29 2004-11-11 Faurecia Systemes D'echappement Organe de la ligne d’echappement d’un vehicule automobile
WO2004097191A3 (fr) * 2003-04-29 2005-02-10 Faurecia Sys Echappement Organe de la ligne d’echappement d’un vehicule automobile

Also Published As

Publication number Publication date
FR2695990B1 (fr) 1994-12-02
EP0589782A3 (de) 1995-04-26
BR9303856A (pt) 1994-05-10
MX9305796A (es) 1994-05-31
FR2695990A1 (fr) 1994-03-25

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