EP0665414A1 - Wärmetauscherrohr, insbesondere für Kraftfahrzeug, Verfahren zu dessen Herstellung und Wärmetauscher mit solchen Röhren - Google Patents

Wärmetauscherrohr, insbesondere für Kraftfahrzeug, Verfahren zu dessen Herstellung und Wärmetauscher mit solchen Röhren Download PDF

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Publication number
EP0665414A1
EP0665414A1 EP95100615A EP95100615A EP0665414A1 EP 0665414 A1 EP0665414 A1 EP 0665414A1 EP 95100615 A EP95100615 A EP 95100615A EP 95100615 A EP95100615 A EP 95100615A EP 0665414 A1 EP0665414 A1 EP 0665414A1
Authority
EP
European Patent Office
Prior art keywords
faces
tube
jaw
heat exchanger
face
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Withdrawn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
EP95100615A
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English (en)
French (fr)
Inventor
Philippe Le Gauyer
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 EP0665414A1 publication Critical patent/EP0665414A1/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Withdrawn legal-status Critical Current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
    • F28F9/16—Arrangements for sealing elements into header boxes or end plates by permanent joints, e.g. by rolling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D53/00—Making other particular articles
    • B21D53/02—Making other particular articles heat exchangers or parts thereof, e.g. radiators, condensers fins, headers
    • B21D53/08—Making other particular articles heat exchangers or parts thereof, e.g. radiators, condensers fins, headers of both metal tubes and sheet metal
    • B21D53/085—Making other particular articles heat exchangers or parts thereof, e.g. radiators, condensers fins, headers of both metal tubes and sheet metal with fins places on zig-zag tubes or parallel tubes
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F1/00—Tubular elements; Assemblies of tubular elements
    • F28F1/02—Tubular elements of cross-section which is non-circular
    • F28F1/025—Tubular elements of cross-section which is non-circular with variable shape, e.g. with modified tube ends, with different geometrical features

Definitions

  • the invention relates to a heat exchanger tube, in particular for a motor vehicle, a method for its conformation and a heat exchanger comprising such tubes.
  • a heat exchanger tube comprising a body of oblong section delimited by two large faces and by two small faces, one end of oblong section delimited by two large faces and by two small faces, as well as a transition part connecting the body and the end, the section of the body having a length and a width respectively greater and less than the length and the width of the section from the end.
  • the large faces of the body and those of the end may be flat or slightly curved, while the small faces of the body and those of the end are generally semi-circular or else flat, in which case this small flat face is connected by two rounds of small radius of curvature with the two large faces.
  • These tubes are arranged in a conventional manner to form a bundle provided with fins and intended to be swept by an air flow.
  • the oblong shape of the body facilitates the passage of air and reduces pressure losses compared to conventional round tube heat exchangers.
  • the ends of the tubes have a less oblong cross-section than that of the body to facilitate mounting of the tube ends on a collecting plate, or "plate with holes” , crossed by these ends.
  • the tubes can be arranged in pairs and in two rows, the ends of the tubes of the same pair being received in the same hole of the collector plate.
  • One of the problems posed by the production of the tubes of the type defined above, is that of their conformation, in particular as regards the transition part.
  • transition part is as short as possible, in the axial direction of the tube, since the fins of the heat exchanger are located only at the body of the tubes.
  • the object of the invention is in particular to propose a heat exchanger tube of the aforementioned type which can be produced with a shaping device of simple structure and which makes it possible to minimize the length of the transition part, in the axial direction of the tube. .
  • the invention proposes a heat exchanger tube of the type defined in the introduction, in which the transition part comprises two inclined faces connecting the large faces of the body and the large faces of the end and at least one adjusted surface. which rests on a guideline of a small face of the body and on a guideline of a small face of the end, on the one hand, and which also connects the two inclined faces of the transition part, d 'somewhere else.
  • this transition part is particularly short and it can also be produced with relatively simple tools.
  • the two large faces of the body, the two large faces of the end and the two inclined faces of the transition part are all planar faces.
  • the two inclined faces of the transition part form an angle of 30 ° relative to the axis of the tube.
  • the tube has a single adjusted surface connecting a small face of the body and a small face of the end, while the other small face of the body and the other small face of the end have at least one common generator.
  • This structure facilitates an arrangement of the tubes in pairs, in which the two tubes of the same pair are joined by the aforementioned generators.
  • the guideline of the small face of the body is located at a straight section of the body to which the inclined faces are connected, and the guideline of the small face of the end is located at a cross section of the end to which the inclined faces are connected.
  • the guidelines on which the adjusted surface rests also have a shape substantially semi-circular.
  • the adjusted surface is connected to the two inclined faces along two straight segments which each extend between a point located at the junction of a large face of the body, a small face of the body and an inclined face, and another point located at the junction of a large face of the end, of a small face of the end and an inclined face.
  • At least one of the two jaws has a surface portion extending between a portion serving to shape the end and a portion serving to shape the transition portion, to produce the adjusted surface of the tube, this surface portion having a shape homologous to that of the adjusted surface.
  • the invention in another aspect, relates to a heat exchanger comprising a multiplicity of tubes of the aforementioned type, the ends of which are received in holes in a collector plate.
  • the tubes are arranged in pairs in two rows, the tubes of the same pair being joined and their respective ends being received in the same hole of the collector plate.
  • Figure 1 shows a tube 10 for a heat exchanger, in particular of a motor vehicle, comprising a body 12 (shown partially) of oblong section, one end 14 of oblong section and a part of transition 16 connecting the body 12 and the end 14.
  • the body 12 has an oblong section S1 (FIG. 2), and is delimited by two large flat faces 18 and by two small rounded faces 20, of substantially semi-circular shape.
  • the end 14 has an oblong section S2 and is delimited by two large flat faces 22 and by two small rounded faces 24 of substantially semi-circular shape.
  • the section S1 of the body 12 has a length (delimited between the two faces 20) and a width (delimited between the two faces 18) which are respectively greater and less than the length (delimited between the faces 24) and the width (delimited between the faces 22) of the section S2 of the end 14.
  • the end 14 has a less oblong shape than the body 12, the perimeter of the end 14 being equal to or slightly greater than that of the body 12.
  • the small face 20 and the small face 24 situated on the left side of FIG. 1 have a common generator G, while the small face 20 and the small face 24 situated on the right side of the figure are offset.
  • the transition portion 16 comprises two inclined plane faces 26 which each connect a large face 18 to a large face 22.
  • the two inclined faces 26 advantageously form an angle of 30 ° relative to the axis of the tube, that is to say say with respect to the plane of the faces 18 and 22.
  • transition portion 16 comprises a regulated surface 28 which connects the small face 20 of the body and the small face 24 of the end, (which are both located on the right side of FIG. 1), and which connects in in addition to the two inclined faces 26.
  • the adjusted surface 28 rests on two guidelines 30 and 32 forming respectively part of the small faces 20 and 24 situated on the right side of FIG. 1.
  • the guideline 30 of the small face 20 of the body 12 is located at a cross section of the body to which the inclined faces 26 are connected.
  • the guideline 32 of the small face 24 of the end 14 is located at a cross section of the end to which the inclined faces 26 connect.
  • the guidelines 30 and 32 thus each have a semi-circular shape which corresponds respectively to the profile of the face 20 or to that of the face 24.
  • the inclined faces 26 are each connected to the body 12 along an edge 34 and to the end 14 along an edge 36.
  • guideline 30 and the two edges 34 are part of the same cross section of the body, while the guideline 32 and the two edges 36 are part of the same cross section of the end.
  • the adjusted surface 28 is thus generated by an infinity of straight lines connecting the guidelines 30 and 32.
  • the adjusted surface 28 is connected to the two inclined faces 26 along two straight segments 38.
  • Each of the segments 38 extends between a point A situated at the junction of a large face 18 of the body, a small face 20 of the body and an inclined face 26, and a point B situated at the junction of a large face 22 of the end, a small face 24 of the end and an inclined face 26.
  • the tube 10 is advantageously made of a metal or metal alloy, for example aluminum, having good heat exchange properties and which can be worked easily.
  • the two tubes 10 of the same pair are joined by their respective generatrices G (FIG. 2).
  • G generatrices G
  • the center distance A of the bodies of the two tubes is greater than the center distance A ′ of the ends of the two tubes.
  • the ends of the tubes are received in a collecting plate 42 through which a multiplicity of holes 44 of oblong shape are formed, each receiving the ends 14 of the two tubes of the same pair.
  • the collector plate 42 has as many holes 44 as pairs of tubes.
  • the collector plate 42 has a generally rectangular shape bordered by a folded edge 46 forming a peripheral groove in which a seal 48 is placed.
  • the exchanger 40 further comprises a water box wall 50 comprising an open face of generally rectangular shape limited by a flange 52 capable of being introduced into the groove of the collecting plate 20 by compressing the bead 48, under the action of clamping lugs 54 of the collector plate.
  • the heat exchanger 40 further comprises intermediate fins 56 disposed between the pairs of tubes 10. These fins are inserted between the bodies 12 of the tubes up to their transition part 16, that is to say up to the base of the inclined faces 26.
  • the zone of the tubes which is devoid of fins is minimal, which makes it possible to optimize the thermal performance of the heat exchanger for a given length of the tubes.
  • the tubes 10 are brazed to the header plate 22, as shown by a solder joint 58.
  • the fins 56 are brazed to the tubes.
  • FIGS. 4 to 9 show a device 60 for shaping a tube as described above.
  • the device 60 comprises a first jaw 62 having an open internal cavity 64 having an internal shape homologous to that of half of the external shape of the body and of the end of the tube, in the region of one of the small faces of the body (in the example, the one located on the side of the common generator G).
  • the device 60 further comprises a second jaw 66 having an open internal cavity 68 having an internal shape homologous to that of another half of the external shape of the body and of the end of the tube, in the region of another small face of the body (in the example, where the curved part 28 must be formed).
  • the internal cavity 64 of the jaw 62 has three main parts 70, 72 and 74 respectively serving to shape the end, the transition part and the body.
  • the internal cavity 68 comprises three successive parts 76, 78 and 80 respectively serving to shape the end, the transition part and the body of the tube.
  • the cavity 68 includes a surface portion 82 ( Figures 4 and 5) which extends between the parts 76 and 80 and which is intended to conform the adjusted surface 28.
  • This surface portion 82 has a shape homologous to that of the surface portion 28 to be formed.
  • the jaws 62 and 66 can be moved towards or away from each other in a direction D which extends transversely to the axis of the tube.
  • Means are provided for bringing the two jaws towards one another along a first movement stroke in direction D to grip the tube, as shown in FIGS. 4 and 5, without starting the deformation of the end.
  • a punch 84 is used, as shown in FIG. 7, comprising an end 86 corresponding to the internal shape of the body (but with a shorter section length), a intermediate part 88 corresponding to the shape of the transition part and an opposite part 90 corresponding to the internal shape of the end of the tube.
  • the punch 84 is completely inserted into the end of the tube, which ensures the conformation of the end 16 and of the transition part 14.
  • the device 60 allows the tube to be shaped under precise and rapid conditions suitable for high speed production lines.
  • the tube is formed in principle on its two ends to then allow the mounting of such tubes between the two water boxes of a heat exchanger.
  • the tube of the invention is very particularly suitable for heat exchangers, in particular for motor vehicle cooling radiators.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Geometry (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
EP95100615A 1994-01-20 1995-01-18 Wärmetauscherrohr, insbesondere für Kraftfahrzeug, Verfahren zu dessen Herstellung und Wärmetauscher mit solchen Röhren Withdrawn EP0665414A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9400596 1994-01-20
FR9400596A FR2715217B1 (fr) 1994-01-20 1994-01-20 Tube d'échangeur de chaleur, en particulier pour véhicule automobile, procédé pour sa conformation et échangeur de chaleur comprenant de tels tubes.

Publications (1)

Publication Number Publication Date
EP0665414A1 true EP0665414A1 (de) 1995-08-02

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ID=9459219

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95100615A Withdrawn EP0665414A1 (de) 1994-01-20 1995-01-18 Wärmetauscherrohr, insbesondere für Kraftfahrzeug, Verfahren zu dessen Herstellung und Wärmetauscher mit solchen Röhren

Country Status (2)

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EP (1) EP0665414A1 (de)
FR (1) FR2715217B1 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19649129A1 (de) * 1996-11-27 1998-05-28 Behr Gmbh & Co Flachrohr-Wärmeübertrager mit umgeformtem Flachrohrendabschnitt
EP1596149A2 (de) * 2004-05-13 2005-11-16 Sanden Corporation Wärmetauscher

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2742535B1 (fr) 1995-12-19 1998-01-30 Valeo Climatisation Echangeur de chaleur a boite a fluide brasee, en particulier pour vehicule automobile
CN109945721B (zh) * 2019-03-28 2020-06-30 揭阳市美度实业有限公司 一种汽车散热器用圆角六棱台末端结构扁管设计方法

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR914783A (fr) * 1943-10-06 1946-10-17 Ici Ltd échangeur thermique
FR2474674A1 (fr) * 1980-01-24 1981-07-31 Ferodo Sa Tube pour echangeur de chaleur a corps de section oblongue et extremite cylindrique
US4546824A (en) * 1984-03-19 1985-10-15 Mccord Heat Transfer Corporation Heat exchanger
EP0253167A1 (de) * 1986-07-09 1988-01-20 Süddeutsche Kühlerfabrik Julius Fr. Behr GmbH & Co. KG Wärmetauscher, insbesondere Kältemittel-Verdampfer
FR2674322A1 (fr) * 1991-03-20 1992-09-25 Valeo Thermique Moteur Sa Echangeur de chaleur a faisceau de tubes, en particulier pour vehicule automobile.

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR914783A (fr) * 1943-10-06 1946-10-17 Ici Ltd échangeur thermique
FR2474674A1 (fr) * 1980-01-24 1981-07-31 Ferodo Sa Tube pour echangeur de chaleur a corps de section oblongue et extremite cylindrique
US4546824A (en) * 1984-03-19 1985-10-15 Mccord Heat Transfer Corporation Heat exchanger
EP0253167A1 (de) * 1986-07-09 1988-01-20 Süddeutsche Kühlerfabrik Julius Fr. Behr GmbH & Co. KG Wärmetauscher, insbesondere Kältemittel-Verdampfer
FR2674322A1 (fr) * 1991-03-20 1992-09-25 Valeo Thermique Moteur Sa Echangeur de chaleur a faisceau de tubes, en particulier pour vehicule automobile.

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19649129A1 (de) * 1996-11-27 1998-05-28 Behr Gmbh & Co Flachrohr-Wärmeübertrager mit umgeformtem Flachrohrendabschnitt
EP1596149A2 (de) * 2004-05-13 2005-11-16 Sanden Corporation Wärmetauscher
EP1596149A3 (de) * 2004-05-13 2006-10-25 Sanden Corporation Wärmetauscher

Also Published As

Publication number Publication date
FR2715217A1 (fr) 1995-07-21
FR2715217B1 (fr) 1996-03-01

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