EP0514249A1 - Verfahren zur Herstellung eines Rohrbündelwärmetauschers - Google Patents

Verfahren zur Herstellung eines Rohrbündelwärmetauschers Download PDF

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Publication number
EP0514249A1
EP0514249A1 EP92401284A EP92401284A EP0514249A1 EP 0514249 A1 EP0514249 A1 EP 0514249A1 EP 92401284 A EP92401284 A EP 92401284A EP 92401284 A EP92401284 A EP 92401284A EP 0514249 A1 EP0514249 A1 EP 0514249A1
Authority
EP
European Patent Office
Prior art keywords
tube
section
cross
heat exchanger
perimeter
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
EP92401284A
Other languages
English (en)
French (fr)
Other versions
EP0514249B1 (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 EP0514249A1 publication Critical patent/EP0514249A1/de
Application granted granted Critical
Publication of EP0514249B1 publication Critical patent/EP0514249B1/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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
    • F28D1/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
    • F28D1/04—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits
    • F28D1/053—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being straight
    • F28D1/0535—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being straight the conduits having a non-circular cross-section
    • F28D1/05366—Assemblies of conduits connected to common headers, e.g. core type radiators
    • F28D1/05383—Assemblies of conduits connected to common headers, e.g. core type radiators with multiple rows of conduits or with multi-channel conduits
    • 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
    • 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

Definitions

  • the invention relates to a heat exchanger of the type comprising a bundle formed by a multiplicity of tubes arranged in at least one row and in which each tube has a body terminated by an end received in a hole in a collector plate.
  • It also relates to a process for the manufacture of such a heat exchanger.
  • the aforementioned collector plate also called “hole plate” is part of a water box which is mounted at one end of the bundle, the other end of which is most often fitted with a similar water box.
  • Such heat exchangers are used in particular in motor vehicles with an internal combustion engine to constitute either an engine cooling radiator or a cabin heating radiator.
  • the tubes of the bundle are then traversed by a cooling fluid, generally brine, which circulates in a closed circuit and which is cooled by heat exchange with air passing through the bundle of the exchanger.
  • a cooling fluid generally brine
  • the bundle tubes have a circular cross section, both at their body and at their end.
  • tubes are also used, the body of which has a non-circular cross section which, for simplicity, can be called "oval section”.
  • It is generally an elliptical or related section, or even a flattened section bounded by two edges rectilinear parallels interconnected by two semicircular edges.
  • the end of the tube has, most often, a cross section of a shape different from that of the body of the tube.
  • the latter is generally less oblong than that of the body of the tube, or even circular, and this to avoid possible deformation of this end.
  • the object of the invention is in particular to overcome the drawbacks mentioned above.
  • an object of the invention to provide a heat exchanger of the type defined above in which the spacing of the tubes can be optimized within the same row or, where appropriate, a row to the other, while maintaining a sufficient material bridge between the holes in the collector plate.
  • the invention provides for this purpose a heat exchanger of the type defined in the introduction, in which the cross section of the end of each tube has a perimeter less than the perimeter of the cross section of the body of the tube.
  • the collector plate may include holes whose perimeter - and therefore the cross section - are smaller than in the prior art. This makes it possible to reduce the spacing of the holes and therefore the tubes, within the same row and, if necessary, from one row to the other if the heat exchanger comprises several rows of tubes.
  • the invention thus applies to heat exchangers of the "monorang” type comprising a single row of tubes and to heat exchangers of the "multirang” type comprising several rows of tubes.
  • the body of the tube can have a cross section of circular shape and the end of the tube also a cross section of circular shape, but of smaller diameter.
  • the body of the tube has a cross section of oval shape, as defined above, and the end of the tube then has either a cross section of oval shape, or a cross section of circular shape.
  • the end of the tube is connected to the body of the tube by a deformed part constituting, at least partially, a bulge or bead for retaining the collector plate.
  • the end of the tube comprises, beyond the collector plate, a flare for retaining the collector plate.
  • the invention relates to a method of manufacturing a heat exchanger as defined above.
  • each tube is deformed by repelling material, so that the perimeter of its cross section is less than the perimeter of the cross section of the body of the tube.
  • this deformation is obtained by force-fitting the tube, in its longitudinal direction, through an embossing tool comprising a passage having a cross section of determined shape and provided with an enlarged inlet with conical edge.
  • the deformation of the end of the tube is done by successive introductions into several embossing tools, such that the passage of the first tool has a cross section of perimeter greater than the perimeter of the cross section of the second tool and so on , to ensure progressive deformation of the end of the tube.
  • the heat exchanger shown in Figures 1 and 2 comprises a bundle formed by a multiplicity of tubes 10, with respective axes XX parallel which, in the example, are arranged in two rows. Two adjacent tubes of the same row have a front center distance E F ( Figure 2) and a center distance of row E R ( Figure 1).
  • the tubes 10 of the bundle have respective bodies 12 which pass through a multiplicity of parallel fins 14 and respective ends 16 respectively received in holes 10 of a collector plate 20.
  • This collecting plate also called a "hole plate” consists of a metal plate of generally rectangular shape which is stamped and cut.
  • the collector plate 20 comprises a core 22, of generally rectangular shape, through which are arranged two rows of holes 10 which, in the example, have a circular shape.
  • the holes 10 have, within the same row, a center distance E F and, from one row to another, a center distance E R.
  • Each hole 10 of the collector plate 20 is surrounded by a collar 24 directed towards the side of the fins 14.
  • the core 22 is surrounded by a folded edge 26 defining a peripheral groove of generally rectangular outline, the edge 26 being crenellated to provide tabs foldable 20.
  • the heat exchanger further comprises a seal 30 of compressible material comprising a core 32 of generally rectangular shape suitable for pressing against the core 22 of the collector plate 20.
  • the core 32 has two rows of holes , each bordered by a collar 34 capable of being compressed between the end 16 of a tube 12 and a collar 24 of the collecting plate 20.
  • the core 32 of the seal 30 is bordered by a peripheral bead 36, of general outline rectangular, suitable for being housed in the peripheral groove delimited by the edge 26 of the collector plate.
  • the heat exchanger further comprises a wall 38 of a water box having an open face delimited by a peripheral rim 40, of generally rectangular outline. The latter is intended to ensure the compression of the bead 36 of the seal 30 when the tabs 28 of the collector plate are folded as shown in FIG. 1.
  • the body 12 of each tube 10 has a cross section SI, of elliptical shape, having a given perimeter P1.
  • each tube 10 has a cross section S2 of circular shape having a perimeter P2 which is less than the perimeter P1 of the cross section S1.
  • the perimeter P2 of the cross section S2 of the end of the tube was equal to or greater than the perimeter P1 of the cross section S1 of the body of the tube.
  • the invention makes it possible to reduce the value of the centers E F and E R , while retaining a bridge of sufficient material between two adjacent holes of the collector plate.
  • the end 16 is connected to the body 12 by a deformed part 42 representing a transition zone.
  • This deformed part has, along the cross section of FIG. 1, a shape which narrows from the body 12 to the end 16.
  • the deformed portion 42 forms a bulge 44 which contributes to the maintenance of the collector plate on the respective ends of the tubes. It will be understood that the bulge 44 extends partially over the periphery of the deformed part 42.
  • each tube comprises, beyond the collector plate, a flare 46 produced, in a manner known per se, after introduction of the ends of the tubes into the corresponding holes of the collector plate.
  • the collector plate is thus perfectly maintained on each tube of the bundle, on one side by the bulge 44 and, on the other side, by the flare 46.
  • the tubes can have similar ends fixed to a collecting plate of another water box. Alternatively, these latter ends can be connected two by two by U-bends.
  • a bundle is first produced from a set of tubes, the respective bodies of which are engaged through a plurality of fins, and this in a manner known per se.
  • the respective ends of the tubes initially have the same cross section as their respective body, that is to say an oval cross section.
  • a punch 44 having a cylindrical body 50 of circular section terminated by a tip 52 of generally frustoconical shape.
  • the end 16 having initially an elliptical cross section S1, of perimeter P1 is thus deformed by the punch 44, so as to have a cross section circular having an internal diameter D1 whose perimeter is equal to or greater than the perimeter P1 of the cross section SI.
  • the end 16 resulting from the previous operation is deformed by means of an embossing tool 54 (FIG. 4) comprising a cylindrical passage 56 having a circular internal section of diameter D2 such that D2 is less than D1 .
  • the passage 56 leads to an enlarged entry 58, with a conical edge.
  • a third operation (FIG. 5), the end 16 resulting from the previous operation is introduced into an embossing tool 60 analogous to the tool 54.
  • the tool 60 has an embossing passage 62 of cylindrical shape, having a circular cross section of diameter D3, such that D3 is less than D2.
  • the passage 62 leads to an enlarged entry 64 with a conical edge.
  • one or more other similar tools can be used to further reduce the cross-section of the end of the tube.
  • FIGS. 3 to 5 are each carried out preferably simultaneously on all of the tubes of the bundle.
  • Figure 3 preferably using a single tool having as many punches as tubes whose ends are to be deformed.
  • the embossing tools advantageously comprise as many embossing passages as there are tubes in the bundle to be treated.
  • the invention applies to heat exchangers comprising one or more rows of parallel tubes.
  • the ends of the tubes could be subjected to the holes of the collector plate by any other known technique, for example by crimping, gluing or expansion.

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)
EP92401284A 1991-05-14 1992-05-12 Verfahren zur Herstellung eines Rohrbündelwärmetauschers Expired - Lifetime EP0514249B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9105826 1991-05-14
FR9105826A FR2676534B1 (fr) 1991-05-14 1991-05-14 Echangeur de chaleur a faisceau de tubes, en particulier pour vehicule automobile, et procede pour sa fabrication.

Publications (2)

Publication Number Publication Date
EP0514249A1 true EP0514249A1 (de) 1992-11-19
EP0514249B1 EP0514249B1 (de) 1995-07-12

Family

ID=9412766

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92401284A Expired - Lifetime EP0514249B1 (de) 1991-05-14 1992-05-12 Verfahren zur Herstellung eines Rohrbündelwärmetauschers

Country Status (7)

Country Link
US (1) US5214848A (de)
EP (1) EP0514249B1 (de)
JP (1) JPH06235594A (de)
DE (1) DE69203388T2 (de)
ES (1) ES2075643T3 (de)
FR (1) FR2676534B1 (de)
MX (1) MX9202223A (de)

Cited By (1)

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

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2696534B1 (fr) * 1992-10-02 1994-12-02 Valeo Thermique Moteur Sa Echangeur de chaleur à tubes munis d'un évasement.
US5644842A (en) * 1995-01-05 1997-07-08 Coleman; Rick L. Method of making profiled tube and shell heat exchangers
AU4611696A (en) * 1995-01-05 1996-07-24 Rick L. Coleman Tube and shell heat exchanger and method
US6082446A (en) * 1998-04-20 2000-07-04 Ahaus Tool And Engineering, Inc. Sealing method and apparatus for a heat exchanger
US6374911B1 (en) * 1999-06-17 2002-04-23 Modine Manufacturing Company Charge air cooler and method of making the same
JP4109444B2 (ja) * 2001-11-09 2008-07-02 Ｇａｃ株式会社 熱交換器およびその製造方法
KR100590656B1 (ko) * 2004-08-27 2006-06-19 모딘코리아 유한회사 열교환기
US7156401B2 (en) * 2004-09-17 2007-01-02 Modine Manufacturing Company Elastomeric gasket in gasket well of heat exchanger
US20070131390A1 (en) * 2005-12-09 2007-06-14 Kuo-Hsin Chen Heat dissipating module and method of fabricating the same
US9328966B2 (en) * 2007-11-01 2016-05-03 Modine Manufacturing Company Heat exchanger with a baffle reinforcement member
US9470461B2 (en) * 2007-11-01 2016-10-18 Modine Manufacturing Company Heat exchanger with a tank reinforcement member
US8322407B2 (en) * 2008-04-29 2012-12-04 Honda Motor Co., Ltd. Heat exchanger with pressure reduction
DE102009049483A1 (de) * 2009-10-15 2011-04-21 Modine Manufacturing Co., Racine Wärmetauscher und Dichtungsanordnung dafür
US9267737B2 (en) 2010-06-29 2016-02-23 Johnson Controls Technology Company Multichannel heat exchangers employing flow distribution manifolds
US9151540B2 (en) 2010-06-29 2015-10-06 Johnson Controls Technology Company Multichannel heat exchanger tubes with flow path inlet sections
WO2013184135A1 (en) * 2012-06-08 2013-12-12 International Engine Intellectual Property Company, Llc Egr cooler header casting
FR3066264B1 (fr) * 2017-05-10 2019-11-01 Valeo Systemes Thermiques Echangeur thermique, notamment pour la regulation thermique de batteries, et procede de fabrication correspondant

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2235345A1 (de) * 1973-06-26 1975-01-24 Takayasu Kiyotelu
FR2512941A1 (fr) * 1981-09-14 1983-03-18 Valeo Echangeur de chaleur a faisceau de tubes paralleles et procede d'assemblage de ses elements constitutifs
EP0108958A2 (de) * 1982-11-13 1984-05-23 Süddeutsche Kühlerfabrik Julius Fr. Behr GmbH & Co. KG Verbindungsanordnung für metallische Rohre eines Wärmetauschers mit einem Boden eines Wasserkastens
US4546824A (en) * 1984-03-19 1985-10-15 Mccord Heat Transfer Corporation Heat exchanger
EP0387678A1 (de) * 1989-03-14 1990-09-19 Autokühler Gmbh & Co. Kg. Wärmeaustauscher und Verfahren zur flüssigkeitsdichten Befestigung einer Bodenplatte an einem Wärmeaustauschernetz

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CH251602A (de) * 1946-09-30 1947-11-15 Von Roll Ag Heizkörper.
US3977227A (en) * 1974-02-25 1976-08-31 Noble Charles H Method of cold extruding ductile cast iron tube
US4028037A (en) * 1975-03-17 1977-06-07 The Dow Chemical Company Tube treating and apparatus therefor
DE3048959C2 (de) * 1980-12-24 1985-08-29 Wieland-Werke Ag, 7900 Ulm Verfahren und Vorrichtung zur Herstellung eines Rippenrohres für Wärmeübertrager o.dgl.
US4580324A (en) * 1984-06-22 1986-04-08 Wynn-Kiki, Inc. Method for rounding flat-oval tubing
US5046348A (en) * 1989-10-05 1991-09-10 Textron, Inc. Blind fastener for composite materials

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2235345A1 (de) * 1973-06-26 1975-01-24 Takayasu Kiyotelu
FR2512941A1 (fr) * 1981-09-14 1983-03-18 Valeo Echangeur de chaleur a faisceau de tubes paralleles et procede d'assemblage de ses elements constitutifs
EP0108958A2 (de) * 1982-11-13 1984-05-23 Süddeutsche Kühlerfabrik Julius Fr. Behr GmbH & Co. KG Verbindungsanordnung für metallische Rohre eines Wärmetauschers mit einem Boden eines Wasserkastens
US4546824A (en) * 1984-03-19 1985-10-15 Mccord Heat Transfer Corporation Heat exchanger
EP0387678A1 (de) * 1989-03-14 1990-09-19 Autokühler Gmbh & Co. Kg. Wärmeaustauscher und Verfahren zur flüssigkeitsdichten Befestigung einer Bodenplatte an einem Wärmeaustauschernetz

Cited By (1)

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

Also Published As

Publication number Publication date
ES2075643T3 (es) 1995-10-01
US5214848A (en) 1993-06-01
JPH06235594A (ja) 1994-08-23
EP0514249B1 (de) 1995-07-12
FR2676534A1 (fr) 1992-11-20
DE69203388T2 (de) 1995-12-21
DE69203388D1 (de) 1995-08-17
FR2676534B1 (fr) 1999-02-12
MX9202223A (es) 1992-11-01

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