EP0505244B1 - Echangeur de chaleur à faisceau de tubes, en particulier pour véhicule automobile - Google Patents

Echangeur de chaleur à faisceau de tubes, en particulier pour véhicule automobile Download PDF

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Publication number
EP0505244B1
EP0505244B1 EP92400667A EP92400667A EP0505244B1 EP 0505244 B1 EP0505244 B1 EP 0505244B1 EP 92400667 A EP92400667 A EP 92400667A EP 92400667 A EP92400667 A EP 92400667A EP 0505244 B1 EP0505244 B1 EP 0505244B1
Authority
EP
European Patent Office
Prior art keywords
tubes
heat exchanger
bundle
pitch distance
exchanger according
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.)
Expired - Lifetime
Application number
EP92400667A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0505244A1 (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 EP0505244A1 publication Critical patent/EP0505244A1/fr
Application granted granted Critical
Publication of EP0505244B1 publication Critical patent/EP0505244B1/fr
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
    • F28F9/18—Arrangements for sealing elements into header boxes or end plates by permanent joints, e.g. by rolling by welding
    • F28F9/182—Arrangements for sealing elements into header boxes or end plates by permanent joints, e.g. by rolling by welding the heat-exchange conduits having ends with a particular shape, e.g. deformed; the heat-exchange conduits or end plates having supplementary joining means, e.g. abutments
    • 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
    • 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
    • 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

Definitions

  • the invention relates to a heat exchanger of the type comprising a bundle of tubes arranged in at least one row and in which each tube has a body terminated by an end received in a collecting plate.
  • This collector plate also called a "hole plate” is part of a water box which is mounted at one end of the bundle, the other end of this bundle most often being 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 exchanger.
  • a cooling fluid generally brine
  • the bundle tubes have a circular cross section, both at their body and at their ends.
  • tubes are also used, the body of which has a non-circular cross section, which is generally oblong, for example, flattened, oval, elliptical, etc.
  • the end of the tube has a cross section of a shape different from that of the body of the tube. It is generally less oblong than that of the body of the tube, even circular, and this to avoid a possible deformation of this end.
  • the tubes have a body terminated by an end capable of being received in the collector plate, the ends being offset relative to the body.
  • the distance between the two ends of the two adjacent tubes is identical to that of the body of the tubes so as to be able to allow sufficient diametral widening of the end.
  • the object of the invention is in particular to overcome the drawbacks mentioned above.
  • the invention proposes for this purpose a heat exchanger of the type defined in the introduction, in which at least two adjacent tubes of the bundle have a terminal center distance separating their respective ends which is different from a central center distance separating their respective bodies.
  • the terminal center distance of the two adjacent tubes is greater than their central center distance.
  • the two adjacent tubes in this case belong to two different rows of the bundle.
  • the center distance of the tube bodies can be reduced, which makes it possible to reduce the width of the beam.
  • the respective ends of the tubes of the bundle are advantageously each received individually in a hole in the collector plate, the latter having several rows of holes arranged so that the distance between two adjacent holes of two different rows corresponds at the terminal center distance of the tubes.
  • the terminal center distance of the two adjacent tubes is less than their central center distance.
  • the two adjacent tubes belong to two different rows of the bundle, which makes it possible to reduce the width of the collector plate.
  • the tubes of the bundle are grouped by pairs of adjacent tubes, so that the respective ends of the two adjacent tubes of the same pair are received in the same hole of the collector plate, the latter comprising as many holes as pairs of tubes.
  • the two adjacent tubes belong to the same row of the bundle.
  • the tubes of the bundle are grouped by pairs of adjacent tubes, so that the respective ends of two tubes of the same pair are received in the same hole of the collector plate, the latter comprising as many holes as pairs of tubes.
  • This variant is particularly interesting because it makes it possible to reduce the length dimension of the collector plate.
  • the bodies of the tubes of the bundle preferably have a cross section of generally oblong shape, while their ends have a cross section of less oblong shape, or even circular.
  • the invention could also be applied to heat exchangers in which the tubes have a circular section both at their body and at their ends.
  • the tubes can be assembled to the collector plate or plates by means of assembly techniques known per se, for example by means of a seal, by brazing, gluing, expansion, etc.
  • Figure 1 shows a heat exchanger comprising a bundle consisting of a multiplicity of tubes 10 arranged in two rows and which shows two adjacent tubes belonging respectively to these two rows.
  • Each tube 10 has a body 12 having a non-circular cross section S1 which, in the example, is substantially elliptical.
  • the body 12 is terminated by an end 14 which has been deformed to have a cross section S2 of non-circular shape and which, in the example, is substantially elliptical.
  • Section S2 is less elongated than section S1, the long axis of the ellipse of section S2 being shorter than the long axis of the ellipse of section S1, while the small axis of section S2 is longer than the minor axis of section S1.
  • each tube 10 has a common generator 16 oriented towards the outside of the bundle.
  • the bundle of the heat exchanger further comprises a multiplicity of fins 18 which extend parallel to each other and which each provide two rows of holes to allow passage to the bodies 12 of the tubes 10.
  • a collector plate 20 which, in the example, is a metal plate comprising a core 22 of generally rectangular shape in which are arranged two rows of holes 24 each having a cross section of shape adapted to that of the end 14 of a tube 10.
  • Each of the holes 24 is surrounded by a collar 26 turned towards the side of the fins 18.
  • the core 22 is surrounded, over its entire perimeter, by a folded edge 28 forming a groove and terminated by foldable legs 30.
  • the seal between the ends 14 of the tubes and the holes 24 of the collector plate 20 is ensured by a seal 32 which comprises a core 34 of generally rectangular shape adapted to the shape of the core 22 of the collector plate 20.
  • the core 34 has two rows of holes each surrounded by a compressible collar 36 suitable for being compressed between a hole 24 in the collector plate and the end 14 of the tube 10 received in the corresponding hole.
  • the core 34 of the joint 32 is bordered, over its entire perimeter, by a bead 38 capable of being placed in the peripheral groove delimited by the folded edge 28 of the collector plate 20.
  • the heat exchanger further comprises a wall 40 of a water box comprising an open face of generally rectangular shape limited by a flange 42 capable of being introduced into the groove of the collecting plate 20 by compressing the bead 38 of the gasket. tightness under the action of the clamping lugs 30.
  • the collector plate 20 comprises, between two adjacent holes 24 of two different rows, a bridge of material 44 which, for reasons of mechanical resistance of the collector plate, and for producing collars 26 , cannot go below a minimum value. It follows that the center distance of the holes 24 of the collector plate, which corresponds to the terminal center distance A ′ mentioned above, cannot fall below a minimum value. Thus, thanks to the invention, for a center distance A ′ of minimum value, it is possible to produce a beam whose central center distance A is less than the terminal center distance A ′. This makes it possible to optimize the dimensions of the heat exchanger bundle for given dimensions of the collector plate or of the bundle.
  • the tubes 10 may have deformed ends similar to those of the ends 14 to receive a similar collecting plate provided with a water box wall.
  • the tubes 10 can be joined two by two by elbows, which avoids the presence of a second water box.
  • FIG. 2 shows another heat exchanger comprising, as in the case of FIG. 1, two rows of tubes 10 each of which has a body 12 of cross section S1 and one end 14 of cross section S2.
  • each of the tubes 10 comprises a generator 16 common to the body 12 and to the end 14.
  • the generators 16 of two adjacent tubes are arranged on the interior side of the beam, that is to say close to each other.
  • the heat exchanger of FIG. 2 comprises a collecting plate 46 comprising a core 48 of generally rectangular shape which provides a single row of holes 50 each of which has an oblong cross section suitable for simultaneously receiving the respective ends 14 of two adjacent tubes 10 belonging to two rows of the bundle.
  • Each of the holes 50 is surrounded by a collar 52 turned towards the side of the fins 18.
  • the core 48 of the collector plate comprises, over its entire periphery, a folded edge 54 terminated by folding legs 56.
  • a seal 58 of generally rectangular shape bordered by a peripheral bead 60 suitable for being received in the groove of the collector plate 46.
  • the seal 58 comprises two rows of holes suitable for receive the ends 14 of the tubes 10. These holes are grouped in pairs, each pair of holes being surrounded by a collar 62 having substantially the shape of an 8 and suitable for being introduced into a collar 52 to seal between this collar and the two ends 14 received in this collar.
  • the collar 62 has, in its middle, a material bridge 64 in the intermediate region between two adjacent tubes.
  • the material bridge 64 which forms part of the seal 58 has a narrower width than that of the material bridge 44 forming part of the collecting plate 20 of the heat exchanger of FIG. 1.
  • FIG. 3 represents a tool 66 intended to conform the ends of the tubes of the bundle.
  • This tool comprises a fixed central jaw 68 comprising, on two opposite sides, a series of half-impressions 70 whose shape corresponds to that of a half-ellipse of section S2.
  • the tool further comprises two movable jaws 72 each of which is provided with half-impressions 70 similar to those of the central jaw 68.
  • the half-impressions 70 of the central jaw 68 and of the lateral jaws 72 are separated two by two from a center distance E which corresponds to the center distance of the tubes within a row of the beam.
  • the ends 14 of the tubes 10 of the bundle have, before deformation, a cross section S1 identical to that of the body of the tube.
  • Figure 4 is a variant of the embodiment of Figure 2.
  • the elements common to those of Figure 2 are designated by the same reference numerals.
  • each of the tubes 10 does not have a generator common to both its body 12 and its end 14. This means that we can have the relationship L ′ / 2 + e> L / 2 .
  • the heat exchanger comprises two rows of tubes 10 each of which comprises a body 12 having a non-circular cross section S1 which, in the example, is limited by two parallel edges 74 and two semi-circular edges 76 to form a so-called "flat" tube.
  • Body 12 extends by a deformed end 14 having a non-circular cross section S2 which, in the example, is limited by two parallel edges 78, a flat inside edge 80 and a semicircular outside edge 82.
  • the section S2 has a shorter length than section S1, but a larger width ( Figures 5 and 6).
  • the tubes 10 are grouped in pairs, so that the respective ends 14 of a pair of tubes are received in the same hole 50 of a collecting plate 46 similar to those of FIGS. 2 and 4. However, in this embodiment , the hole 50 is bordered by a collar 52 which extends from the side of the water box. Between two adjacent pairs of tubes 10 are disposed spacers 84 serving as cooling fins.
  • the collecting plate 46 is surrounded by a folded edge 54 provided with foldable tabs 56 to receive the bead 42 of a wall of a water box 40.
  • a simple seal 86 is provided which comes to rest in the bottom of the groove of the collector plate.
  • the tubes 10 are plated by means of an easily fusible alloy, which makes it possible to braze each pair of ends 14 inside a hole 50 with the formation of a solder joint 88.
  • the spacers 84 are also brazed between the pairs of adjacent tubes.
  • the terminal center distance A ' is also less than the central center distance A.
  • this embodiment allows the width of the box to be further reduced. water because the two tubes of the same pair are in contact over their entire length.
  • FIGS 7 and 8 show another heat exchanger comprising two rows of tubes 10.
  • the tubes are grouped in pairs within the same row.
  • the body 12 of each tube has a non-circular cross section of substantially elliptical shape.
  • the end 14 of each tube has a circular cross section.
  • Each hole 90 has a characteristic shape obtained by the intersection of two circles, as shown in FIG. 7.
  • a seal 98 having a core 100 of generally rectangular shape suitable for being applied to the core 92 of the collector plate.
  • the core 100 is surrounded by a bead 102 capable of bearing in the peripheral groove of the collector plate and forming a seal with the peripheral bead 42 of a wall 40 of the water box.
  • the core 100 of the seal provides circular holes corresponding to the ends 14 of the bundle tubes.
  • the holes made through the joint are grouped in pairs and surrounded by a collar 104 having the general shape of an 8. Each collar 104 is thus introduced into a hole 90 of the collector plate by enclosing the two ends 14 of the tubes d 'the same pair.
  • the terminal center distance B ′ of the ends 14 is less than the central center distance B of the bodies of the tubes. This makes it possible to have the ends of circular tubes while reducing the overall length of the water box since the collector plate has bridges of material 106 between the pairs of tubes in a row, and not between the tubes of a row as in the previous embodiments.
  • each tube 10 has, as in the case of the Figure 2, a center distance A ′ less than the center distance A.
  • each tube 10 has a generator 16, common to the body 12 and to the end 14, which is on the inside of the beam.
  • the heat exchanger comprises a collector plate 108 of plastic material in which holes 110 are formed, each surrounded by a collar 112 directed towards the side of the fins 18 of the bundle.
  • Each of the collars 112 is provided with an annular groove 114 of a shape adapted to that of the end 14 of a tube in order to be able to accommodate said end.
  • the latter is glued into the groove 114 by means of an appropriate adhesive 116, for example of the two-component type.
  • the peripheral bead 42 of a wall 40 of the water box is also glued.

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)
  • Air-Conditioning For Vehicles (AREA)
EP92400667A 1991-03-20 1992-03-13 Echangeur de chaleur à faisceau de tubes, en particulier pour véhicule automobile Expired - Lifetime EP0505244B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9103412 1991-03-20
FR9103412A FR2674322B1 (fr) 1991-03-20 1991-03-20 Echangeur de chaleur a faisceau de tubes, en particulier pour vehicule automobile.

Publications (2)

Publication Number Publication Date
EP0505244A1 EP0505244A1 (fr) 1992-09-23
EP0505244B1 true EP0505244B1 (fr) 1996-05-08

Family

ID=9410958

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92400667A Expired - Lifetime EP0505244B1 (fr) 1991-03-20 1992-03-13 Echangeur de chaleur à faisceau de tubes, en particulier pour véhicule automobile

Country Status (8)

Country Link
US (1) US5219024A (pt)
EP (1) EP0505244B1 (pt)
JP (1) JP3316692B2 (pt)
BR (1) BR9200966A (pt)
DE (1) DE69210452T2 (pt)
ES (1) ES2089435T3 (pt)
FR (1) FR2674322B1 (pt)
MX (1) MX9201230A (pt)

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Publication number Priority date Publication date Assignee Title
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DE4212717A1 (de) * 1992-04-16 1993-10-21 Laengerer & Reich Gmbh & Co Wärmeaustauscher
FR2693545B1 (fr) * 1992-07-08 1994-09-30 Valeo Thermique Moteur Sa Echangeur de chaleur à plusieurs rangées de tubes, notamment pour véhicules automobiles.
FR2693544B1 (fr) * 1992-07-08 1994-09-30 Valeo Thermique Moteur Sa Echangeur de chaleur comportant plusieurs rangées de tubes, en particulier pour véhicules automobiles.
FR2693546B1 (fr) * 1992-07-09 1994-09-30 Valeo Thermique Moteur Sa Echangeur de chaleur à faisceau de tubes parallèles, en particulier pour véhicule automobile.
US5327959A (en) * 1992-09-18 1994-07-12 Modine Manufacturing Company Header for an evaporator
SE469912C (sv) * 1992-09-30 1996-03-28 Valeo Engine Cooling Ab Fordonskylare med platta rör i rader där rören har vidgade ändpartier och däremellan närliggande rad vidrörande partier
FR2700610B1 (fr) * 1993-01-18 1995-03-24 Valeo Thermique Moteur Sa Echangeur de chaleur à faisceau de tubes à ailettes, en particulier pour véhicules automobiles, et procédé pour sa fabrication.
FR2703767B1 (fr) * 1993-04-09 1995-07-07 Equip Technic Dispositif d'echange de chaleur a faisceau de tubes faiblement espaces et chaudiere ainsi equipee.
FR2711236B1 (fr) * 1993-10-12 1995-11-24 Valeo Thermique Habitacle Echangeur de chaleur à deux rangées de tubes, en particulier pour véhicule 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.
FR2715217B1 (fr) * 1994-01-20 1996-03-01 Valeo Thermique Moteur Sa Tube d'échangeur de chaleur, en particulier pour véhicule automobile, procédé pour sa conformation et échangeur de chaleur comprenant de tels tubes.
JP3774489B2 (ja) * 1995-06-06 2006-05-17 キヤノン株式会社 図形処理方法とその装置
SE513642C2 (sv) * 1996-03-29 2000-10-16 Valeo Engine Cooling Ab Värmeväxlare samt sätt vid framställning av en dylik
DE19837807A1 (de) * 1998-08-20 2000-02-24 Mann & Hummel Filter Wärmetauscher mit mindestens einem Anschlußelement
FR2783907B1 (fr) * 1998-09-25 2000-12-22 Valeo Thermique Moteur Sa Echangeur de chaleur d'encombrement reduit, en particulier pour vehicule automobile
FR2786558B1 (fr) * 1998-11-30 2001-02-02 Valeo Thermique Moteur Sa Tube plat pour echangeur de chaleur de largeur reduite
FR2808322B1 (fr) * 2000-04-27 2002-09-06 Valeo Thermique Moteur Sa Echangeur de chaleur avec collecteur d'encombrement reduit, notamment pour vehicule automobile
DE102005008409A1 (de) * 2005-02-24 2006-08-31 Modine Manufacturing Co., Racine Wärmetauscher mit Rohren und Rippen sowie Herstellungsverfahren
DE102006028143A1 (de) * 2006-06-16 2007-12-20 Behr Gmbh & Co. Kg Wärmetauscher
US20110005715A1 (en) * 2009-07-10 2011-01-13 Keihin Corporation Vehicular air conditioning apparatus
US20110005707A1 (en) * 2009-07-10 2011-01-13 Keihin Corporation Heat exchanger equipped with a partitioning member for use in a vehicular air conditioning apparatus
US8397795B2 (en) * 2009-10-15 2013-03-19 Keihin Corporation Heat exchanger for vehicular air conditioning apparatus
US10317142B2 (en) * 2014-08-25 2019-06-11 Hanon Systems Heat exchanger having a mechanically assembled header
DE102014218677A1 (de) * 2014-09-17 2016-03-17 Mahle International Gmbh Wärmeübertrager und Verfahren zur Herstellung eines Wärmeübertragers

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JPH0271097A (ja) * 1988-09-06 1990-03-09 Diesel Kiki Co Ltd 熱交換器

Also Published As

Publication number Publication date
JPH0650695A (ja) 1994-02-25
MX9201230A (es) 1992-10-01
ES2089435T3 (es) 1996-10-01
US5219024A (en) 1993-06-15
FR2674322B1 (fr) 1998-02-13
EP0505244A1 (fr) 1992-09-23
BR9200966A (pt) 1992-11-17
FR2674322A1 (fr) 1992-09-25
DE69210452T2 (de) 1996-09-05
JP3316692B2 (ja) 2002-08-19
DE69210452D1 (de) 1996-06-13

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