EP0578565A1 - Wärmetauscher mit mehreren Rohrreihen, insbesondere für Kraftfahrzeuge - Google Patents

Wärmetauscher mit mehreren Rohrreihen, insbesondere für Kraftfahrzeuge Download PDF

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Publication number
EP0578565A1
EP0578565A1 EP93401756A EP93401756A EP0578565A1 EP 0578565 A1 EP0578565 A1 EP 0578565A1 EP 93401756 A EP93401756 A EP 93401756A EP 93401756 A EP93401756 A EP 93401756A EP 0578565 A1 EP0578565 A1 EP 0578565A1
Authority
EP
European Patent Office
Prior art keywords
tubes
heat exchanger
substantially constant
thickness
hole
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Withdrawn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
EP93401756A
Other languages
English (en)
French (fr)
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 EP0578565A1 publication Critical patent/EP0578565A1/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Withdrawn legal-status Critical Current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
    • F28F9/0219—Arrangements for sealing end plates into casing or header box; Header box sub-elements
    • F28F9/0224—Header boxes formed by sealing end plates into covers
    • F28F9/0226—Header boxes formed by sealing end plates into covers with resilient gaskets
    • 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 heat exchanger of the type comprising a bundle of parallel tubes arranged in rows and having respective ends received in a collecting plate provided with holes.
  • 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 traversed by a fluid, generally water added with an antifreeze, used for cooling the engine, while a flow of air scans the beam tubes.
  • a heat exchanger of the type comprising a bundle of parallel tubes arranged in rows as well as a collecting plate provided with holes and in which each hole receives the respective ends of several adjacent tubes belonging to different rows of the bundle, a compressible seal being interposed between the edge of the hole and the tube ends.
  • the spacing or not of the tubes, from one row to another can be brought to a minimum value.
  • the shape of the holes does not make it possible to obtain, after assembly, a uniform compression ratio of the seal over the entire periphery of the tubes introduced into the same hole.
  • This compression is weaker in the region of the joint between two ends of adjacent tubes because this region of the joint is thicker than the others.
  • the invention provides a heat exchanger of the aforementioned type, in which the ends of the tubes and the hole which receives them have sections of conjugate shapes which delimit annular intervals having a substantially constant thickness, and in which these annular intervals meet in pairs in a region of intersection between two ends of adjacent tubes and having a substantially constant thickness.
  • the compressible seal can have a substantially constant thickness and consequently have a uniform compression ratio.
  • the two ends of adjacent tubes have flat edges which extend parallel to each other and which thus define the abovementioned region of intersection, having a substantially constant thickness.
  • the invention applies in particular to a heat exchanger in which the bundle tubes have a non-circular section, in particular a flattened section of oval or elliptical type, so as to reduce the pressure drop undergone by the air flow scanning the beam and optimizing the thermal performance of the latter.
  • the ends of the tubes, received in the collector plate have a shape identical or not to that of the bodies of the tube. Generally, it is also a generally oval or elliptical section with a major axis and a minor axis.
  • the aforementioned flat edge is generally provided at one of the ends of the major axis of the end section of the tube.
  • the two aforementioned flat edges are parallel to each other, they define a thick intersection region substantially constant, which may or may not be equal to the thickness of the annular intervals.
  • the thickness of the intersection region and the thickness of the annular intervals are substantially equal to each other.
  • the compressible seal comprises annular parts suitable for being housed in the abovementioned annular intervals and having, before compression, a substantially constant thickness, as well as intersection parts suitable for being housed each in a aforementioned intersection region and having, before compression, a substantially constant thickness.
  • the initial thickness of the joint which is substantially constant is therefore, after compression, still substantially constant but of smaller value.
  • FIGS. 1 and 2 represent a collecting plate 10, also called a "hole plate", having a core 12 of generally rectangular shape.
  • the core 12 is preferably formed from a metallic material and is limited by two parallel edges 14 corresponding to the two long sides of the rectangle and two other parallel edges (not shown in the drawings) corresponding to the short sides of the rectangle.
  • each of the edges 14 firstly comprises a part 16 connected at right angles to the core 12, a part 18 connected at right angles to the part 16 and finally a part 20 connected at right angles to the part 18.
  • the parts 16 and 18 of each edge 14 thus define a groove 22 extending over the entire periphery of the plate 10 and the function of which will be explained below.
  • Each of the parts 20 is crenellated on its free edge to define a series of lugs 24 capable of being folded down to ensure the assembly of the collector plate with a wall of water box (not shown).
  • each of the holes 26 has, in the direction of its length, an axis of symmetry XX 'which extends perpendicular to the edges 14 of the collector plate 10.
  • Each of the holes 26 is formed by the union of two identical oval sections 28 which intersect at a constriction 30.
  • the two sections 28 are generally elliptical, their respective major axes being aligned in the direction of the axis XX '.
  • the respective centers of the two elliptical sections 28 define a distance between them or not P.
  • the distance between two adjacent holes 26 defines a center distance E whose direction is perpendicular to that of step P.
  • Each of the holes 26 is surrounded by a collar 32 whose contour corresponds to that of the two sections 28, including their throttle 30.
  • Each of the collars 30 is projecting relative to the core 12 on the side opposite the legs 24.
  • each hole 26 is intended to receive the respective ends of two tubes belonging to two adjacent rows of a bundle formed by two rows of tubes. Within the same row, the tubes are separated two by two by a center distance E ( Figure 1).
  • the seal 34 made of a compressible elastomeric material, comprises a core 36 of generally rectangular shape corresponding to that of the 'core 12 of the header plate 10.
  • the core 36 is limited by two longitudinal beads 38 corresponding to the two long sides of the rectangle and two side beads (not shown) corresponding to the two short sides of the rectangle.
  • the beads 38 are attached to the core 36 by a veil of material 40. This gives a bead extending over the entire periphery of the seal and suitable for being introduced into the groove of the collector plate.
  • the core 36 is provided with compressible collars 42 each of which has a shape adapted to that of a hole 26 so that it can be introduced into the latter when the core 36 of the seal 34 is applied against the core 12 of the collector plate.
  • Each collar 42 thus affects the general shape of an 8 formed by two oval annular parts 44 joined together by a bridge of material 46.
  • a compressible collar 42 is introduced into a collar 32 of a collector plate 10
  • the two annular parts 44 of the collar 42 engage respectively in the two sections 28 of the hole 26, the material bridge 46 coming to be placed in the throttle 30.
  • the core 36 forms, at the interior of each compressible collar 42, two orifices suitable for each receiving one end of a tube of the bundle.
  • the heat exchanger also comprises a bundle 52 formed of two rows of tubes 54 of non-circular section which pass through a multiplicity of parallel fins 56.
  • the tubes 54 are separated in pairs by a center distance E within the same row and by a step P from one row to another.
  • the tubes 54 have respective ends 58 of non-circular shape spaced from one another with the same center distance and the same pitch as the tubes.
  • the ends 58 of the tubes 54 and the hole 26 which receives them have sections of conjugate shapes which delimit between them annular intervals 60 having a thickness E1 substantially constant over the entire periphery of the ends 58 which they surround (figure 5).
  • the annular intervals 60 meet in pairs in a region of intersection 62 between the two ends 58 received in the hole 26.
  • the intersection region 62 has a thickness E jolt which is substantially constant and which is preferably substantially equal to twice the thickness E1.
  • the two adjacent ends 58 have substantially flat edges 64 which extend parallel to one another and parallel to the small axes YY ′ of the elliptical sections of the ends 58.
  • the intersection zone 62 is thus delimited by the two edges 64 opposite and by the two edges of the constriction 30.
  • Each of the substantially flat edges 64 is obtained by localized deformation of the corresponding end 58 of the tube.
  • the flat edge 64 is provided at one of the ends of the major axis.
  • the annular parts 44 of the compressible seal 34 have, before compression, a substantially constant thickness which is greater than E1. After compression, the thickness of the annular parts 44 is still constant, but equal to E1.
  • the annular parts 44 are interconnected by the material bridge 46 forming an intersection part which, before compression, has a substantially constant thickness greater than E2. After compression, the thickness of the material bridge 46 is then equal to E2.
  • the entire seal 34 has undergone constant compression both in its annular parts 44 and in its intersection part 46.
  • the invention can be applied to heat exchangers whose end sections of the tubes have different shapes. It can also be applied to heat exchangers comprising more than two rows of tubes.

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)
EP93401756A 1992-07-08 1993-07-06 Wärmetauscher mit mehreren Rohrreihen, insbesondere für Kraftfahrzeuge Withdrawn EP0578565A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR929208480A FR2693544B1 (fr) 1992-07-08 1992-07-08 Echangeur de chaleur comportant plusieurs rangées de tubes, en particulier pour véhicules automobiles.
FR9208480 1992-07-08

Publications (1)

Publication Number Publication Date
EP0578565A1 true EP0578565A1 (de) 1994-01-12

Family

ID=9431707

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93401756A Withdrawn EP0578565A1 (de) 1992-07-08 1993-07-06 Wärmetauscher mit mehreren Rohrreihen, insbesondere für Kraftfahrzeuge

Country Status (6)

Country Link
US (1) US5301748A (de)
EP (1) EP0578565A1 (de)
JP (1) JPH06174391A (de)
BR (1) BR9302776A (de)
FR (1) FR2693544B1 (de)
MX (1) MX9304100A (de)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE60100617T2 (de) 2000-10-06 2004-06-09 Visteon Global Technologies, Inc., Dearborn Herstellung eines Rohres für einen Wärmetauscher
DE10322211A1 (de) * 2003-05-16 2004-12-02 Modine Manufacturing Co., Racine Wärmetauscherblock
US7036570B2 (en) * 2003-10-21 2006-05-02 Westinghouse Air Brake Technologies Corporation Multiple row heat exchanger using “end-to-end” or “tube touching” positioning of the tubes for row spacing
US7461689B2 (en) * 2004-06-01 2008-12-09 Modine Manufacturing Company Thermal cycling resistant tube to header joint for heat exchangers
WO2009058395A2 (en) * 2007-11-01 2009-05-07 Modine Manufacturing Company Heat exchanger
US9328966B2 (en) * 2007-11-01 2016-05-03 Modine Manufacturing Company Heat exchanger with a baffle reinforcement member
DE102009049483A1 (de) * 2009-10-15 2011-04-21 Modine Manufacturing Co., Racine Wärmetauscher und Dichtungsanordnung dafür
AU2011201083B2 (en) * 2010-03-18 2013-12-05 Modine Manufacturing Company Heat exchanger and method of manufacturing the same
US9309839B2 (en) 2010-03-18 2016-04-12 Modine Manufacturing Company Heat exchanger and method of manufacturing the same
US8851157B2 (en) 2010-05-13 2014-10-07 Adams Thermal Systems, Inc. Partial reverse ferrule header for a heat exchanger
DE102014206612A1 (de) * 2014-04-04 2015-10-29 Mahle International Gmbh Wärmetauscher
DE102016207319A1 (de) * 2016-04-28 2017-11-02 Volkswagen Aktiengesellschaft Wärmetauscher und Verfahren zur Herstellung eines solchen Wärmetauschers

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4546824A (en) * 1984-03-19 1985-10-15 Mccord Heat Transfer Corporation Heat exchanger
DE8708104U1 (de) * 1987-06-06 1987-07-23 Erhardt Bischoff Gmbh & Co Kg Fabrik Fuer Kraftfahrzeugteile, 7067 Pluederhausen, De
EP0429401A2 (de) * 1989-10-20 1991-05-29 BORLETTI CLIMATIZZAZIONE S.r.l. Wärmetauscher für eine Automobilklimaanlage

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2475709B1 (fr) * 1980-02-08 1985-12-06 Chausson Usines Sa Tube pour echangeur de chaleur et echangeur a plaque collectrice et a assemblage mecanique comportant ce tube
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.
FR2674322B1 (fr) * 1991-03-20 1998-02-13 Valeo Thermique Moteur Sa Echangeur de chaleur a faisceau de tubes, en particulier pour vehicule automobile.

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4546824A (en) * 1984-03-19 1985-10-15 Mccord Heat Transfer Corporation Heat exchanger
DE8708104U1 (de) * 1987-06-06 1987-07-23 Erhardt Bischoff Gmbh & Co Kg Fabrik Fuer Kraftfahrzeugteile, 7067 Pluederhausen, De
EP0429401A2 (de) * 1989-10-20 1991-05-29 BORLETTI CLIMATIZZAZIONE S.r.l. Wärmetauscher für eine Automobilklimaanlage

Also Published As

Publication number Publication date
FR2693544B1 (fr) 1994-09-30
US5301748A (en) 1994-04-12
FR2693544A1 (fr) 1994-01-14
MX9304100A (es) 1994-01-31
JPH06174391A (ja) 1994-06-24
BR9302776A (pt) 1994-02-16

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