EP0757218A1 - Rohr mit U-förmiger Strömung für Wärmetauscher und Verfahren zu dessen Herstellung - Google Patents

Rohr mit U-förmiger Strömung für Wärmetauscher und Verfahren zu dessen Herstellung Download PDF

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Publication number
EP0757218A1
EP0757218A1 EP96111920A EP96111920A EP0757218A1 EP 0757218 A1 EP0757218 A1 EP 0757218A1 EP 96111920 A EP96111920 A EP 96111920A EP 96111920 A EP96111920 A EP 96111920A EP 0757218 A1 EP0757218 A1 EP 0757218A1
Authority
EP
European Patent Office
Prior art keywords
blank
sheet
sheet blank
folded
tube
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Withdrawn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
EP96111920A
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English (en)
French (fr)
Inventor
Carlos Martins
Martin Wurmser
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 Climatisation SA
Original Assignee
Valeo Climatisation 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 Climatisation SA filed Critical Valeo Climatisation SA
Publication of EP0757218A1 publication Critical patent/EP0757218A1/de
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • F28D1/03—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 plate-like or laminated conduits
    • F28D1/0391—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 plate-like or laminated conduits a single plate being bent to form one or more conduits
    • 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
    • F28D1/03—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 plate-like or laminated conduits
    • F28D1/0308—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 plate-like or laminated conduits the conduits being formed by paired plates touching each other
    • F28D1/035—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 plate-like or laminated conduits the conduits being formed by paired plates touching each other with U-flow or serpentine-flow inside the 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
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/02—Header boxes; End plates
    • F28F9/0202—Header boxes having their inner space divided by partitions
    • F28F9/0204—Header boxes having their inner space divided by partitions for elongated header box, e.g. with transversal and longitudinal partitions
    • F28F9/0214—Header boxes having their inner space divided by partitions for elongated header box, e.g. with transversal and longitudinal partitions having only longitudinal partitions
    • F28F9/0217—Header boxes having their inner space divided by partitions for elongated header box, e.g. with transversal and longitudinal partitions having only longitudinal partitions the partitions being separate elements attached to header boxes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2220/00—Closure means, e.g. end caps on header boxes or plugs on conduits

Definitions

  • the invention relates to a U-shaped circulation tube for a heat exchanger and to a process for its production.
  • It also relates to a heat exchanger provided with a multiplicity of such U-shaped circulation tubes.
  • Heat exchangers are already known, in particular for motor vehicles, which comprise a bundle of U-shaped circulation tubes, also called “U-shaped tubes", and into which the ends of each tube open, in a sealed manner, in a box. fluid.
  • U-shaped circulation tubes also called “U-shaped tubes”
  • these tubes also pass through fins to increase the heat exchange surface between a heat transfer fluid which traverses the tubes of the bundle and an air flow which scans the bundle.
  • the object of the invention is in particular to overcome the aforementioned drawbacks.
  • the invention provides a U-shaped circulation tube for a heat exchanger, which is obtained from a sheet metal blank folded back on itself from a fold line so as to constitute two parts. joined together by brazing on the side of an internal face of the blank, these two parts of the blank being stamped from the internal face to form two hollow imprints in a general U-shape which jointly delimit a U-shaped channel having two mouths s opening on an edge of the folded blank.
  • a U-shaped circulation tube is thus obtained in a simple manner by stamping and folding of a sheet metal blank which then suffices to braze.
  • This brazing operation can be carried out on the tube itself, or preferably at the same time as the connection of all of the tubes with the other components of a heat exchanger, i.e. the box fluid and the fins.
  • each of the U-shaped imprints is formed by two substantially parallel branches joined by an elbow.
  • the respective elbows of the two U-shaped indentations are located symmetrically on either side of the fold line, the sheet blank being considered flat.
  • a blank of aluminum sheet coated with a brazing alloy on its internal face is particularly preferred.
  • the sheet metal blank has a cutout between the two mouths of the U-shaped channel so as to separate these two mouths and provide two feet of tube, which then facilitates connection to a heat exchanger fluid box.
  • the folded sheet blank further comprises an end portion folded substantially at right angles to form a spacer member.
  • This spacer member is advantageously located opposite the mouths of the channel, which allows the tubes of the same heat exchanger to be joined together, in a region opposite to the fluid box.
  • Each of the U-shaped imprints is advantageously formed of two substantially parallel branches joined by an elbow.
  • the respective elbows of the two U-shaped imprints are located symmetrically on either side of the line of symmetry.
  • the sheet blank is advantageously made of aluminum and is coated with a brazing alloy on its internal face.
  • the method of the invention may also comprise an operation consisting in cutting the sheet blank, in the thickness of each of the two parts of the sheet blank, in order to separate the two mouths of the U-shaped duct.
  • the method of the invention may comprise an additional operation consisting in bending, at substantially right angles, an end portion of the sheet blank already folded to form a spacer member.
  • FIG. 1 shows a sheet metal sheet 10 of generally rectangular shape limited by two long sides 12 and two short sides 14.
  • the sheet metal blank 10 has been stamped to form, from an internal face F of the latter, two indentations 16 in the general shape of U arranged symmetrically with respect to a line of symmetry L which divides the blank into two parts 18. This line L extends parallel to the two short sides 14 and halfway between them.
  • Each of the indentations 16 has the general shape of a U and is formed by two branches 20 substantially parallel to one another and to the long sides 12, these two branches being further joined together by an elbow 22. These two elbows are located symmetrically on either side of the line of symmetry L.
  • the two branches 20 of an imprint 16 end in mouths 24 which end at a short side 14 forming a free edge of the sheet metal blank 10.
  • These mouths 24 are intended to form feet of tubes, as will be seen below.
  • the blank 10 comprises, between each pair of mouthpieces 24, a cutout 26 formed from the free edge 14.
  • each of the imprints 16 is surrounded by a peripheral border 28 and by an internal border 30, which borders are in the initial plane of the sheet, before it is stamped.
  • the blank of FIG. 1 is then folded back on itself, on either side of the line of symmetry L (as shown by the arrows F) so as to bring the two parts 18 of the sheet blank together to bring them together in contact on the side of the internal face.
  • the respective edges 18 come into mutual contact, as do the edges 30.
  • the two indentations 16 jointly delimit a U-shaped channel having two mouths opening onto an edge of the folded blank, as seen in FIG. 2.
  • the folded sheet blank comprises an end portion 32 folded substantially at a right angle.
  • This part 32 is obtained by folding around a fold line P which is parallel to the line of symmetry L.
  • This end part is intended to form a spacer, as can be seen in FIG. 3.
  • the sheet blank is advantageously made of aluminum, coated with a brazing alloy on the side of the internal face F.
  • a brazing alloy on the side of the internal face F.
  • This brazing operation can be carried out on the tube itself or, preferably, on a set of tubes forming a heat exchanger.
  • cutouts 26 can be either made on the blank before folding, or on the blank already folded.
  • the U-shaped tube has two feet of tube 34 spaced from one another ( Figure 2).
  • FIGS. 3 and 4 show a heat exchanger 36 comprising a plurality of tubes, each obtained from a blank 10 as described above.
  • the tubes are arranged parallel to each other and the two feet 34 of each tube are introduced into the holes 38 of a collecting plate 40, which has a folded edge 42 (FIG. 4).
  • the collector plate 40 comes to cap a fluid box 44 with U-shaped section comprising a core 46 and two wings 48 which are fitted in the edges 42.
  • a longitudinal partition 50 is disposed between the manifold plate 40 and the fluid box 36 to delimit in the latter two adjacent compartments which communicate, each time, with two separate mouths 24 of the same tube.
  • a heat transfer fluid can enter one of the compartments of the fluid box, circulate in the different tubes and reach the other compartment, as shown by the arrows in FIG. 4.
  • corrugated spacers 52 Between two adjacent tubes are disposed each time corrugated spacers 52 forming cooling fins.
  • two plates 54 are provided respectively at the two ends of the bundle.
  • the sheet metal blank 10 is advantageously formed from a metallic material, generally aluminum, coated solder plating.
  • the folded parts 32 of the tubes form spacer members (FIG. 3) which also contribute to the mechanical strength of the assembly.
  • the folding of the sheet blank could be carried out with respect to a line of symmetry extending parallel to the general direction of the branches of the U-shaped imprints.
  • the invention is particularly intended for heat exchangers for 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)
EP96111920A 1995-07-31 1996-07-24 Rohr mit U-förmiger Strömung für Wärmetauscher und Verfahren zu dessen Herstellung Withdrawn EP0757218A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9509312 1995-07-31
FR9509312A FR2737557B1 (fr) 1995-07-31 1995-07-31 Tube a circulation en u pour echangeur de chaleur et son procede de fabrication

Publications (1)

Publication Number Publication Date
EP0757218A1 true EP0757218A1 (de) 1997-02-05

Family

ID=9481565

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96111920A Withdrawn EP0757218A1 (de) 1995-07-31 1996-07-24 Rohr mit U-förmiger Strömung für Wärmetauscher und Verfahren zu dessen Herstellung

Country Status (3)

Country Link
EP (1) EP0757218A1 (de)
CN (1) CN1147623A (de)
FR (1) FR2737557B1 (de)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2770635A1 (fr) * 1997-11-06 1999-05-07 Valeo Thermique Moteur Sa Echangeur de chaleur du type brase, notamment de vehicule automobile, et procede de fabrication
FR2771483A1 (fr) * 1997-11-25 1999-05-28 Behr Gmbh & Co Echangeur de chaleur pour vehicules automobiles
FR2789755A1 (fr) * 1999-02-11 2000-08-18 Valeo Climatisation Echangeur de chaleur a plaques, du type brase, en particulier pour vehicule automobile
FR2802628A1 (fr) * 1999-12-17 2001-06-22 Behr Gmbh & Co Echangeur de chaleur, en particulier pour vehicules automobiles
JP2007232330A (ja) * 2006-03-03 2007-09-13 T Rad Co Ltd 積層型熱交換器
FR2986313A1 (fr) * 2012-01-31 2013-08-02 Valeo Systemes Thermiques Tube d'echangeur thermique, echangeur thermique et procede d'obtention correspondant
EP2757336A3 (de) * 2013-01-18 2015-10-21 Robert Bosch Gmbh Wärmetauscher mit optimierter Wärmeübertragung und Heizeinrichtung mit einem solchen Wärmetauscher
US20210381776A1 (en) * 2020-06-05 2021-12-09 Mahle International Gmbh Flat tube and heat exchanger with a flat tube

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4591213B2 (ja) 2005-06-02 2010-12-01 トヨタ自動車株式会社 冷媒注入口付き配管
CN103068143A (zh) * 2012-12-19 2013-04-24 江苏安德信超导加速器科技有限公司 连续波射频四级加速器水冷系统及其制造方法
CN106595130A (zh) * 2015-10-16 2017-04-26 浙江盾安人工环境股份有限公司 板型集流管及换热器

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62203632A (ja) * 1986-02-28 1987-09-08 Showa Alum Corp 積層型熱交換器の製造方法
EP0319520A1 (de) * 1985-06-18 1989-06-07 Blackstone Sweden Ab Herstellungsverfahren eines Wärmetauschers
US5180004A (en) * 1992-06-19 1993-01-19 General Motors Corporation Integral heater-evaporator core
US5318114A (en) * 1991-09-05 1994-06-07 Sanden Corporation Multi-layered type heat exchanger
EP0646759A1 (de) * 1993-09-30 1995-04-05 Sanden Corporation Wärmetauscher

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0319520A1 (de) * 1985-06-18 1989-06-07 Blackstone Sweden Ab Herstellungsverfahren eines Wärmetauschers
JPS62203632A (ja) * 1986-02-28 1987-09-08 Showa Alum Corp 積層型熱交換器の製造方法
US5318114A (en) * 1991-09-05 1994-06-07 Sanden Corporation Multi-layered type heat exchanger
US5180004A (en) * 1992-06-19 1993-01-19 General Motors Corporation Integral heater-evaporator core
EP0646759A1 (de) * 1993-09-30 1995-04-05 Sanden Corporation Wärmetauscher

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 12, no. 55 (M - )<669> 19 February 1988 (1988-02-19) *

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2770635A1 (fr) * 1997-11-06 1999-05-07 Valeo Thermique Moteur Sa Echangeur de chaleur du type brase, notamment de vehicule automobile, et procede de fabrication
FR2771483A1 (fr) * 1997-11-25 1999-05-28 Behr Gmbh & Co Echangeur de chaleur pour vehicules automobiles
US6202741B1 (en) 1997-11-25 2001-03-20 Behr Gmbh & Co. Heat transfer device for a motor vehicle and method of making same
FR2789755A1 (fr) * 1999-02-11 2000-08-18 Valeo Climatisation Echangeur de chaleur a plaques, du type brase, en particulier pour vehicule automobile
FR2802628A1 (fr) * 1999-12-17 2001-06-22 Behr Gmbh & Co Echangeur de chaleur, en particulier pour vehicules automobiles
JP2007232330A (ja) * 2006-03-03 2007-09-13 T Rad Co Ltd 積層型熱交換器
FR2986313A1 (fr) * 2012-01-31 2013-08-02 Valeo Systemes Thermiques Tube d'echangeur thermique, echangeur thermique et procede d'obtention correspondant
WO2013113700A1 (fr) * 2012-01-31 2013-08-08 Valeo Systemes Thermiques Tube d'échangeur thermique, échangeur thermique et procédé d'obtention correspondant
US9975168B2 (en) 2012-01-31 2018-05-22 Valeo Systemes Thermiques Heat exchanger tube, heat exchanger and corresponding production method
EP2757336A3 (de) * 2013-01-18 2015-10-21 Robert Bosch Gmbh Wärmetauscher mit optimierter Wärmeübertragung und Heizeinrichtung mit einem solchen Wärmetauscher
US20210381776A1 (en) * 2020-06-05 2021-12-09 Mahle International Gmbh Flat tube and heat exchanger with a flat tube

Also Published As

Publication number Publication date
CN1147623A (zh) 1997-04-16
FR2737557B1 (fr) 1997-09-12
FR2737557A1 (fr) 1997-02-07

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