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EP0772019A1 - Wärmetauscher mit Rohren mit oval oder länglichem Querschnitt und Verfahren zur dessen Herstellung - Google Patents

Wärmetauscher mit Rohren mit oval oder länglichem Querschnitt und Verfahren zur dessen Herstellung Download PDF

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Publication number
EP0772019A1
EP0772019A1 EP96117254A EP96117254A EP0772019A1 EP 0772019 A1 EP0772019 A1 EP 0772019A1 EP 96117254 A EP96117254 A EP 96117254A EP 96117254 A EP96117254 A EP 96117254A EP 0772019 A1 EP0772019 A1 EP 0772019A1
Authority
EP
European Patent Office
Prior art keywords
tube
tubes
seal
section
axis
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.)
Granted
Application number
EP96117254A
Other languages
English (en)
French (fr)
Other versions
EP0772019B1 (de
Inventor
Michel Potier
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 EP0772019A1 publication Critical patent/EP0772019A1/de
Application granted granted Critical
Publication of EP0772019B1 publication Critical patent/EP0772019B1/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
    • F28F9/04—Arrangements for sealing elements into header boxes or end plates
    • F28F9/16—Arrangements for sealing elements into header boxes or end plates by permanent joints, e.g. by rolling
    • F28F9/165—Arrangements for sealing elements into header boxes or end plates by permanent joints, e.g. by rolling by using additional preformed parts, e.g. sleeves, gaskets
    • 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
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/4935—Heat exchanger or boiler making
    • Y10T29/49373—Tube joint and tube plate structure
    • Y10T29/49375—Tube joint and tube plate structure including conduit expansion or inflation
    • 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
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/4935—Heat exchanger or boiler making
    • Y10T29/49377—Tube with heat transfer means
    • Y10T29/49378—Finned tube
    • 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
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/4935—Heat exchanger or boiler making
    • Y10T29/49391—Tube making or reforming
    • 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
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/53—Means to assemble or disassemble
    • Y10T29/53113—Heat exchanger
    • Y10T29/53122—Heat exchanger including deforming means

Definitions

  • the invention relates to a heat exchanger, in particular for a motor vehicle, and its assembly method.
  • a heat exchanger of the type comprising a multiplicity of tubes passing through fins and having ends inserted into holes in a collector plate with the interposition of a compressible seal forming collars surrounding the ends of the tubes, and in which the ends of the tubes have an oval or oblong section defined by a major axis and a minor axis.
  • Such heat exchangers are also called “heat exchangers with mechanical assembly” because the ends of the tubes are then flared to ensure compression of the collars of the joint, which ensures the tightness of the connection of the tubes and of the collector plate.
  • Heat exchangers of this type are already known, in which the ends of the tubes are deformed, before assembly with the collector plate, so that they have a section different from that of the tubes.
  • each tube at its end, has the disadvantage of hardening the metal constituting the tube and possibly leading to bursting of the wall of the tube during the subsequent flaring operation damaging the mechanical assembly.
  • the object of the invention is in particular to overcome the aforementioned drawbacks.
  • the end of the tube is not shaped before assembly, that is to say before mounting the collector plate.
  • the ends of the tubes have the same section as the latter.
  • the length of the tube devoid of fins, can be made very short, which increases the useful area of the bundle of tubes.
  • the mechanical assembly is obtained only by a flaring of the tube in the direction of the minor axis, this flaring taking place on the walls of large radius of the end of the tube, which avoids the problems of work hardening likely to be generated. by the methods of the prior art.
  • the end section of the tube, before assembly is equal to the section of the tube.
  • the end section of the tube is not shaped before assembly.
  • the compression of the seal collar in the direction of the major axis is carried out before introduction of the end of the tube, while the compression of the seal collar in the direction of the minor axis results from the flaring of the tube during assembly of the heat exchanger.
  • the major axis of the tube is greater than the major interior axis of the collar of the joint before compression, while the minor axis of the tube is less than the minor interior axis of the collar of the joint before compression.
  • the invention relates to a method of assembling a heat exchanger of the type defined above.
  • the end section of each tube before assembly is identical to the section of the tube.
  • operation c) of compression of the joint collar in the direction of a major axis is carried out by means of a punch which has a free end suitable for being inserted into the end of the corresponding tube, without distort it.
  • operation d) of introducing the ends of the tubes is carried out by displacement of the collecting plate by means of a presser.
  • the invention also provides that the operation e) flaring is carried out by means of a punch which widens the end of the tube in the direction of the minor axis.
  • the heat exchanger shown in Figures 1 and 3 comprises a bundle 10 formed of a multiplicity of tubes 12 of oval section which are arranged parallel to each other and in a single row.
  • the tubes 12 pass through a multiplicity of fins 14 formed by substantially rectangular metal plates perpendicular to each other.
  • Each tube 12 has a free end 16 mechanically assembled to a collector plate 18, also called a "collector”. Before assembling the tubes and the collector plate, the ends 16 of the tubes have the exact same section as the tubes, in the current part receiving the fins 14.
  • the collector plate 18 comprises a core 20 of generally rectangular shape delimiting a multiplicity of holes 22, of oval section, suitable for receiving the ends 16 of the tubes. Each hole 22 is surrounded by a collar 24 directed towards the side of the fins 14.
  • the core 20 is extended by a peripheral gutter 26 defining a groove and terminated by a peripheral rim 28 forming foldable tabs.
  • the collector plate 18 receives a compressible seal 30 comprising a core 32 which is applied to the core 20 of the collector plate.
  • This core 32 is connected to a multiplicity of collars 34 which are each introduced into a hole 22 to seal between the end 16 of a tube and the corresponding collar 24.
  • the core 32 forms at its periphery a bead 36 disposed in the gutter 26 and suitable for sealing with a manifold (not shown) when the peripheral flange 28 is folded down.
  • the section of the end 16 of the tube has a substantially oval shape characterized by a large axis T'1 (after assembly) and a small axis T'2 (after assembly).
  • the major axis T'1 is equal to the major axis T1 ( Figure 7) of section 16 of the end of the tube before assembly, this section being identical to that of the tubes in its current part.
  • the minor axis T'2 is greater than the minor axis T2 before assembly (FIG. 7), because it has undergone a first radial flare.
  • a second localized radial flare which results in the presence of two bulges 38, as can be seen in FIGS. 1, 2 and 3 and which make it possible to limit the displacement of the tube relative to the manifold.
  • each collar 34 of the seal 30 Before assembly, each collar 34 of the seal 30 is in the uncompressed state. It has a major internal axis J1 ( Figure 5) which is less than the major axis T1 of the end 16 of the tube ( Figure 7). It also has a small axis J2 ( Figure 5) which is greater than the small axis T2 of the end of the tube ( Figure 7).
  • the header plate 18 fitted with its seal 30 is placed near the bundle 10, so that the holes 22 are opposite the ends 16 of the tubes. Then introduced in the direction of arrow F1, a multiplicity of punches 40 which each have a body 42 of oval section provided with an end 44 adapted to be introduced into one end 16 of a tube 12, without deforming it .
  • the punch 42 is designed to exert a compression on the inside of the collar 34 only in the direction of its major axis so that this major axis passes from the value J1 (FIG. 5) to a value J'1 (FIG. 6) which corresponds to the value T1 of the long axis of the tube to facilitate the introduction of the tube according to a process of prestressing of the joint.
  • this prestressing of the joint takes place only in the direction of its major axis. Indeed, it is not necessary to exert a prestress in the direction of the minor axis since the minor axis J2 of the compressible collar (FIG. 5) is greater than or equal to the minor axis T2 of the end 16 of the tube.
  • the collar 34 has undergone compression in the direction of its major axis, but not in the direction of its minor axis, which then facilitates the introduction of the end 16 of the tube.
  • a presser 46 which is moved in the direction of the arrow F2 and which bears on the core 32 of the compressible seal 30.
  • the movement of the presser 46 causes the displacement of the 'collector plate 18-compressible seal assembly 30, so that each end 16 is inserted into a collar 30 previously compressed in the direction of its major axis.
  • each of the collars 34 is compressed in the direction of its major axis, but not in the direction of its minor axis.
  • each of the ends 16 is flared by means of a punch 48 moved in the direction of the arrow F3 (FIG. 11), which comprises a body 50 terminated by one end 52, which is introduced into the end 16 of the tube to deform it essentially in the direction of the minor axis, and form the two bulges 38 ( Figures 1 to 3).
  • This flare allows to exert compression on the collar 34 in the direction of its minor axis.
  • each tube is shaped only after assembly and that this conformation is obtained only by flaring in the direction of the minor axis.
  • this flare relates to the large radius faces of the section of the tube, which eliminates the problems of work hardening.
  • the invention is very particularly applicable to the production of heat exchangers for motor vehicles, in particular for cooling or heating radiators.

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)
EP96117254A 1995-11-02 1996-10-28 Wärmetauscher mit Rohren mit ovalem oder länglichem Querschnitt und Verfahren zur dessen Herstellung Expired - Lifetime EP0772019B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9512949A FR2740869B1 (fr) 1995-11-02 1995-11-02 Echangeur de chaleur a tubes de section ovale ou oblongue et son procede d'assemblage
FR9512949 1995-11-02

Publications (2)

Publication Number Publication Date
EP0772019A1 true EP0772019A1 (de) 1997-05-07
EP0772019B1 EP0772019B1 (de) 2000-08-30

Family

ID=9484165

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96117254A Expired - Lifetime EP0772019B1 (de) 1995-11-02 1996-10-28 Wärmetauscher mit Rohren mit ovalem oder länglichem Querschnitt und Verfahren zur dessen Herstellung

Country Status (6)

Country Link
US (2) US5901784A (de)
EP (1) EP0772019B1 (de)
BR (1) BR9605375A (de)
DE (1) DE69610059T2 (de)
FR (1) FR2740869B1 (de)
MX (1) MX9605319A (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2782157A1 (fr) * 1998-08-10 2000-02-11 Behr Gmbh & Co Echangeur de chaleur et procede pour sa fabrication
FR2825458A1 (fr) * 2001-05-16 2002-12-06 Behr Gmbh & Co Echangeur de chaleur et procede pour sa fabrication

Families Citing this family (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19719259B4 (de) * 1997-05-07 2005-08-18 Valeo Klimatechnik Gmbh & Co. Kg Flachrohrwärmetauscher für Kraftfahrzeuge mit an Krägen eines Rohrbodens gehaltenen Flachrohren
FR2772341B1 (fr) * 1997-12-12 2000-03-24 Aerospatiale Diffuseur d'air chaud pour capot d'entree d'air de moteur a reaction a circuit de degivrage
FR2783907B1 (fr) * 1998-09-25 2000-12-22 Valeo Thermique Moteur Sa Echangeur de chaleur d'encombrement reduit, en particulier pour vehicule automobile
JP4188475B2 (ja) * 1998-12-22 2008-11-26 日高精機株式会社 熱交換器の製造方法
US20020098056A1 (en) * 2001-01-22 2002-07-25 Progressive Stamping Company, Inc. Method of attaching a plate to a rod and assembly
DE10147192A1 (de) 2001-09-25 2003-04-17 Modine Mfg Co Wärmeaustauscher mit einem Rippen-Flachrohr-Block und Herstellungsverfahren
US6971860B2 (en) * 2003-05-02 2005-12-06 Bristol Compressors, Inc. Compressor unit housing
CA2443496C (en) * 2003-09-30 2011-10-11 Dana Canada Corporation Tube bundle heat exchanger comprising tubes with expanded sections
JP4239840B2 (ja) * 2004-02-03 2009-03-18 株式会社デンソー 熱交換器用チューブの口拡治具
US7549465B2 (en) * 2006-04-25 2009-06-23 Lennox International Inc. Heat exchangers based on non-circular tubes with tube-endplate interface for joining tubes of disparate cross-sections
US20080053646A1 (en) * 2006-09-05 2008-03-06 Simon Martin Thermal expansion feature for an exhaust gas cooler
US8464635B1 (en) * 2008-01-17 2013-06-18 Alkar-Rapidpak-Mp Equipment, Inc. Frying system
US20100052318A1 (en) * 2008-08-27 2010-03-04 Woodward Governor Company System and Method of Joining Fluid Transporting Tube and Header Using Internal Ferrule
FR2951259B1 (fr) 2009-10-08 2014-02-28 Valeo Systemes Thermiques Plaque collectrice pour un echangeur de chaleur et echangeur de chaleur correspondant
US9623471B2 (en) * 2010-10-08 2017-04-18 Carrier Corporation Furnace heat exchanger attachment
CZ2012317A3 (cs) * 2012-05-14 2013-11-27 Halla Visteon Climate Control Corporation Sberná hlavová nádrz
US9952002B2 (en) * 2013-04-09 2018-04-24 Panasonic Intellectual Property Management Co., Ltd. Heat transfer fin, heat exchanger, and refrigeration cycle device
US9127403B2 (en) * 2013-05-28 2015-09-08 Andritz Inc. Flash tank with flared inlet insert and method for introducing flow into a flash tank
EP3137836B1 (de) * 2014-04-29 2019-06-12 Carrier Corporation Verbesserter wärmetauscher
US10317142B2 (en) * 2014-08-25 2019-06-11 Hanon Systems Heat exchanger having a mechanically assembled header
US10082348B2 (en) * 2014-09-23 2018-09-25 Enterex America LLC Heat exchanger tube-to-header sealing system
DE102014219401A1 (de) * 2014-09-25 2016-03-31 Mahle International Gmbh Anordnung für eine Temperiereinrichtung sowie Temperiereinrichtung
US20160146551A1 (en) 2014-11-26 2016-05-26 Enterex America LLC Heat exchanger assembly
FR3037388B1 (fr) * 2015-06-12 2019-07-26 Valeo Systemes Thermiques Ailette d'un echangeur thermique notamment pour vehicule automobile, et echangeur thermique correspondant
FR3037643B1 (fr) * 2015-06-22 2019-07-12 Valeo Systemes Thermiques Echangeur de chaleur et procede de fabrication associe
FR3056733A1 (fr) * 2016-09-28 2018-03-30 Valeo Systemes Thermiques Echangeur de chaleur et procede de fabrication associe
DE102017202667B4 (de) * 2017-02-20 2020-03-05 Hanon Systems Wärmetauscher

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3589440A (en) * 1969-12-01 1971-06-29 Modine Mfg Co Tube and header construction
FR2474674A1 (fr) 1980-01-24 1981-07-31 Ferodo Sa Tube pour echangeur de chaleur a corps de section oblongue et extremite cylindrique
EP0387678A1 (de) 1989-03-14 1990-09-19 Autokühler Gmbh & Co. Kg. Wärmeaustauscher und Verfahren zur flüssigkeitsdichten Befestigung einer Bodenplatte an einem Wärmeaustauschernetz
DE4311892A1 (de) * 1993-04-10 1994-10-13 Behr Gmbh & Co Wärmetauscher, insbesondere für Kraftfahrzeuge

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FR2467374A1 (fr) * 1979-10-12 1981-04-17 Ferodo Sa Dispositif d'assemblage etanche entre un collecteur et une boite a eau d'echangeur de chaleur
FR2484071B1 (fr) * 1980-06-05 1985-12-13 Valeo Plaque a trous pour un echangeur de chaleur a tubes de circulation de fluide
FR2570814B1 (fr) * 1984-09-25 1986-12-19 Valeo Echangeur de chaleur a faisceau de tubes, en particulier pour vehicule automobile
FR2674321B1 (fr) * 1991-03-20 1993-06-04 Valeo Thermique Moteur Sa Echangeur de chaleur a plusieurs rangees de tubes, en particulier pour vehicule automobile.
US5123482A (en) * 1991-11-14 1992-06-23 Wynn's Climate Systems, Inc. Oval tube heat exchanger
DE4212717A1 (de) * 1992-04-16 1993-10-21 Laengerer & Reich Gmbh & Co Wärmeaustauscher
FR2690230B1 (fr) * 1992-04-21 1994-06-03 Valeo Thermique Moteur Sa Echangeur de chaleur comportant un faisceau de tubes a ailettes immobilise par rapport a un ensemble collecteur-boite a eau.
FR2695990B1 (fr) * 1992-09-22 1994-12-02 Valeo Thermique Moteur Sa Tube pour échangeur de chaleur à assemblage mécanique et échangeur de chaleur ainsi obtenu.
DE4305945A1 (de) * 1993-02-26 1994-09-01 Behr Gmbh & Co Wärmetauscher, insbesondere für Kraftfahrzeuge
FR2705143B1 (fr) * 1993-05-11 1995-06-23 Valeo Thermique Moteur Sa Echangeur de chaleur notamment pour vehicule automobile.
FR2715216B1 (fr) * 1994-01-20 1996-02-16 Valeo Thermique Moteur Sa Tube d'échangeur de chaleur, procédé pour sa conformation et échangeur de chaleur comprenant de tels tubes.

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3589440A (en) * 1969-12-01 1971-06-29 Modine Mfg Co Tube and header construction
FR2474674A1 (fr) 1980-01-24 1981-07-31 Ferodo Sa Tube pour echangeur de chaleur a corps de section oblongue et extremite cylindrique
EP0387678A1 (de) 1989-03-14 1990-09-19 Autokühler Gmbh & Co. Kg. Wärmeaustauscher und Verfahren zur flüssigkeitsdichten Befestigung einer Bodenplatte an einem Wärmeaustauschernetz
DE4311892A1 (de) * 1993-04-10 1994-10-13 Behr Gmbh & Co Wärmetauscher, insbesondere für Kraftfahrzeuge

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2782157A1 (fr) * 1998-08-10 2000-02-11 Behr Gmbh & Co Echangeur de chaleur et procede pour sa fabrication
FR2825458A1 (fr) * 2001-05-16 2002-12-06 Behr Gmbh & Co Echangeur de chaleur et procede pour sa fabrication
DE10123675B4 (de) 2001-05-16 2019-05-29 Mahle International Gmbh Wärmeübertrager

Also Published As

Publication number Publication date
DE69610059D1 (de) 2000-10-05
BR9605375A (pt) 1998-07-28
FR2740869B1 (fr) 1997-12-19
EP0772019B1 (de) 2000-08-30
MX9605319A (es) 1997-08-30
FR2740869A1 (fr) 1997-05-09
DE69610059T2 (de) 2001-04-12
US5901784A (en) 1999-05-11
US6044554A (en) 2000-04-04

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