EP0952418B1 - Multifunktioneller Wärmetauscher, insbesondere für Kraftfahrzeug - Google Patents

Multifunktioneller Wärmetauscher, insbesondere für Kraftfahrzeug Download PDF

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Publication number
EP0952418B1
EP0952418B1 EP19990107729 EP99107729A EP0952418B1 EP 0952418 B1 EP0952418 B1 EP 0952418B1 EP 19990107729 EP19990107729 EP 19990107729 EP 99107729 A EP99107729 A EP 99107729A EP 0952418 B1 EP0952418 B1 EP 0952418B1
Authority
EP
European Patent Office
Prior art keywords
bundle
tubes
heat exchanger
manifold
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
EP19990107729
Other languages
English (en)
French (fr)
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EP0952418A1 (de
Inventor
Laurent Dabrowski
Alexandre Sharawi
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 EP0952418A1 publication Critical patent/EP0952418A1/de
Application granted granted Critical
Publication of EP0952418B1 publication Critical patent/EP0952418B1/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
    • 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
    • F28D1/0408—Multi-circuit heat exchangers, e.g. integrating different heat exchange sections in the same unit or heat exchangers for more than two fluids
    • F28D1/0426—Multi-circuit heat exchangers, e.g. integrating different heat exchange sections in the same unit or heat exchangers for more than two fluids with units having particular arrangement relative to the large body of fluid, e.g. with interleaved units or with adjacent heat exchange units in common air flow or with units extending at an angle to each other or with units arranged around a central element
    • F28D1/0443—Combination of units extending one beside or one above the other
    • 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
    • F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
    • F28D2021/0019—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for
    • F28D2021/008—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for for vehicles
    • F28D2021/0082—Charged air coolers
    • 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
    • F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
    • F28D2021/0019—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for
    • F28D2021/008—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for for vehicles
    • F28D2021/0087—Fuel coolers

Definitions

  • the invention relates to a multi-function type heat exchanger, or even multifluid, particularly suitable motor vehicles.
  • It relates more particularly to a heat exchanger comprising a single bundle of tubes and fins, divided in at least two parts suitable for being traversed by different fluids, which are intended to be cooled by a common cooling medium sweeping the beam, and in which the ends of the tubes are received in manifold plates connected to manifold boxes.
  • This known heat exchanger comprises a single bundle of tubes which is divided into two parts traversed respectively by two different fluids. To each part of the beam corresponds to an inlet manifold and a outlet manifold for fluid circulation at cool.
  • the two fluids are constituted respectively by a supply air flow and by a fuel flow which must be cooled by the same air flow which sweeps the beam.
  • This known heat exchanger cannot operate in a safe way that in case the two fluids to cool have near temperatures.
  • the tubes of the first part of the beam and tubes of the second part of the beam present different dilations of a nature to generate stresses at the ends of the tubes.
  • This known heat exchanger cannot therefore be used when the two fluids to be cooled have temperatures very different, as is the case when one of the parts of the beam constitutes a cooling radiator of a heat engine and another part of the beam constitutes a cooling radiator, also called "cooler", engine charge air.
  • the supercharging of a heat engine consists to supply it with compressed air and not directly atmospheric air, so as to increase the mass of oxygen available in combustion chambers.
  • the compression of the air is accompanied by a sharp rise in temperature, which can reach values of 150 ° C, or more.
  • FR 2 712 674 shows an exchanger traversed by two distinct fluids.
  • the object of the invention is in particular to overcome the drawbacks supra.
  • It aims in particular to provide a heat exchanger of this type which can be used to ensure both the motor vehicle engine cooling and the cooling of the charge air of said engine.
  • the invention provides a heat exchanger of the type defined in the introduction in which, at each end of the bundle, the ends of the tubes are connected to at least two separate collector plates, one separated from the other by a beam tube, called “inactive tube”, and in which the two collector plates are assembled respectively to separate manifolds suitable for being crossed respectively by the fluids.
  • the heat exchanger of the invention comprises a single bundle of tubes and fins, but this bundle is divided into two parts so that the ends of the tubes belonging respectively to the two parties are received in two separate header plates, not in one single collecting plate as in the prior art.
  • the bundle is formed by an alternating stack of flat tubes and fins produced in the form of dividers wavy.
  • the aforementioned flat tubes are advantageously of the multi-channel type.
  • Collector plates and manifolds can be assembled together, either mechanically with interposition a seal, or again by brazing.
  • the invention applies very particularly to the case where the beam includes two parts suitable for being swept by a same flow of cooling air.
  • this beam could include more than two parts, still swept by the same cooling air flow.
  • a part of the beam constitutes a cooling radiator of a heat engine, and another part of the beam constitutes a radiator for cooling the air of supercharging of said engine.
  • the heat exchanger shown in the accompanying drawing includes a single beam 1 formed by an alternating stack flat tubes 2 and fins 3 formed by spacers wavy.
  • the tubes 2 are so-called "two-channel" tubes obtained by bending and brazing of a metal sheet, in particular at aluminum base.
  • Each of the tubes internally defines two parallel channels 4 for the circulation of a fluid.
  • the fins 3 are usually formed from the same material metallic and these are connected by brazing to tubes 2.
  • the bundle tubes are identical to each other and are divided into a first series of tubes 2a intended to be traversed by a first fluid F1 and in a second series tubes 2b intended to be traversed by a second fluid F2.
  • the first fluid F1 consists of the coolant (usually water added antifreeze) of a heat engine, in particular of motor vehicle.
  • the second fluid F2 consists of charge air from said heat engine.
  • the fins define free spaces between the tubes for the circulation of a cooling air flow F3 which is common to all tubes in the bundle.
  • the bundle 10 comprises a particular tube 2i, called “tube inactive ", which separates tubes 2a from tubes 2b.
  • This tube inactive 2i constitutes a thermal barrier which separates a first part P1 of the bundle consisting of tubes 2a and associated fins and a second part P2 of the beam consisting of tubes 2b and associated fins.
  • the fluid F1 and the fluid F2 can have very different temperatures, likely to cause constraints in the beam.
  • the temperature F1 fluid can vary from the ambient value up to about 100 ° C
  • the fluid F2 charge air
  • the fluid F1 fluid can reach temperatures of the order of 150 ° C or more, which leads to differential expansion phenomena between tubes 2a and the tubes 2b.
  • the tubes 2a have ends 5a, also called “feet of tubes ", received in openings of a collector plate 6, also called “collector”, which is assembled in a box collector 7.
  • the assembly constituted by the collector plate 6 and the manifold 7 defines a volume serving as inlet (or outlet) compartment for fluid F1.
  • the collector plate 6 has a peripheral edge 8 delimiting a gutter in which is received a ledge device 9 of the manifold 7, with interposition a seal 10.
  • the edge 8 of the collector plate 6 is crenellated and folded against the rim 9 of the box manifold 16 to form folded legs 11.
  • the tubes 2b have respective ends 5b received in openings of another manifold plate 12 which is separate from the collector plate 6 and separated from this last through the inactive tube 2i.
  • the collector plate 12 is assembled to another manifold 13.
  • the manifold 12 includes a peripheral edge 14 delimiting a peripheral gutter in which is received a peripheral edge 15 of the box manifold 13 with interposition of a seal 16.
  • the collecting plate 12 and the collecting box 13 define together a volume serving as an entry compartment (or outlet) for fluid F2.
  • the assembly formed by the collector plate 6 and the manifold 7, on the one hand, and the assembly formed by the collecting plate 12 and the collecting box 13, on the other hand, are completely separate, although they are connect to the same bundle of tubes.
  • the invention makes it possible to overcome these phenomena differential expansion while retaining the advantage to use a single bundle made up of all identical tubes. Since the exchanger includes boxes different collectors, it is possible to train these last from different materials.
  • the manifold 7 can be made of plastic and the manifold 13 in metallic material.
  • the figure in the drawing shows only one end of the beam.
  • the latter has an opposite end which is equipped with two other similar collector plates and also two other similar manifolds.
  • the assembly between a plate manifold and a manifold can be made no only mechanically, i.e. with interposition a seal as described above, but also by soldering.
  • the heat exchanger of the invention may include more than two parts so as to be crossed by more of two different fluids.
  • the invention is not limited to the particular case a heat exchanger comprising a part forming engine cooling radiator and a other part forming charge air cooler of this engine.

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  • 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)

Claims (7)

  1. Wärmetauscher mit einem einzigen Bündel (1) von Rohren (2a, 2b; 2i) und Rippen (3), der in zumindest zwei Teile (P1, P2) geteilt ist, die durch ein Rohr (21) des Bündels getrennt sind, das sogenannte "inaktive Rohr", und die geeignet sind, von verschiedenen Kühlfluiden (F1, F2) durchlaufen zu werden, die dazu bestimmt sind, durch ein das Bündel überstreichendes gemeinsames Kühlmedium (F3) gekühlt zu werden, und bei dem die Enden der Rohre in Sammelplatten aufgenommen sind, die mit Sammelkästen verbunden sind,
    dadurch gekennzeichnet, dass an jedem Ende des Bündels (1), die Enden (5a, 5b) der Rohre (2a, 2b) mit zumindest zwei unterschiedlichen Sammelplatten (6, 12) verbunden sind, die voneinander durch das inaktive Rohr (2i) des Bündels getrennt sind, dass das inaktive Rohr (2i) des Bündels zu den anderen Rohren (2a, 2b) des Bündels identisch ist und dass die zwei Sammelplatten (6, 12) jeweils, mit den unterschiedlichen Sammelkästen (7, 13) zusammengefügt sind, die geeignet sind, jeweils von den Fluiden (F1, F2) durchquert zu werden.
  2. Wärmetauscher nach Anspruch 1, dadurch gekennzeichnet, dass das Bündel (1) durch eine wechselnde Stapelung flacher Rohre (2a, 2b, 2i) und Rippen (3) gebildet wird, die in Form welliger Einschübe ausgeführt sind.
  3. Wärmetauscher nach Anspruch 2, dadurch gekennzeichnet, dass die flachen Rohre (2a, 2b, 2i) mehrkanalig sind.
  4. Wärmetauscher nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass die Sammelplatten (6, 12) und die Sammelkästen (7, 13) mechanisch unter Einsetzung einer Dichtung (10, 16) zusammengefügt werden.
  5. Wärmetauscher nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass die Sammelplatten (6, 12) und die Sammelkästen (7, 13) durch Hartlöten zusammengefügt werden.
  6. Wärmetauscher nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass das Bündel (1) zwei. Teile (P1, P2) umfasst, die geeignet sind, von ein und demselben Kühlluftstrom (F3) überstrichen zu werden.
  7. Wärmetauscher nach einem der Ansprüche 1. bis 6, dadurch gekennzeichnet, dass ein Teil (P1) des Bündels (1) einen Kühler eines Wärmemotors bildet und dass der andere Teil (P2) des Bündels (1) einen Kühler der Aufladeluft des Motors bildet.
EP19990107729 1998-04-20 1999-04-19 Multifunktioneller Wärmetauscher, insbesondere für Kraftfahrzeug Expired - Lifetime EP0952418B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9804921 1998-04-20
FR9804921A FR2777643B1 (fr) 1998-04-20 1998-04-20 Echangeur de chaleur multifonction, en particulier pour vehicule automobile

Publications (2)

Publication Number Publication Date
EP0952418A1 EP0952418A1 (de) 1999-10-27
EP0952418B1 true EP0952418B1 (de) 2003-06-04

Family

ID=9525444

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19990107729 Expired - Lifetime EP0952418B1 (de) 1998-04-20 1999-04-19 Multifunktioneller Wärmetauscher, insbesondere für Kraftfahrzeug

Country Status (3)

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EP (1) EP0952418B1 (de)
DE (1) DE69908483T2 (de)
FR (1) FR2777643B1 (de)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004036020A1 (de) * 2004-07-23 2006-02-16 Behr Gmbh & Co. Kg Wärmeübertrager, insbesondere Kondensator
DE102005040613A1 (de) * 2005-08-27 2007-03-08 Behr Gmbh & Co. Kg Wärmeüberträger, insbesondere Kühlmittelkühler für Kraftfahrzeuge

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2562651B1 (fr) * 1984-04-06 1989-11-03 Sueddeutsche Kuehler Behr Echangeur de chaleur pour vehicule automobile
US4651816A (en) * 1986-03-19 1987-03-24 Modine Manufacturing Company Heat exchanger module for a vehicle or the like
EP0450425B1 (de) * 1990-03-27 1994-09-28 Klöckner-Humboldt-Deutz Aktiengesellschaft Wärmetauscheranordnung
US5303770A (en) * 1993-06-04 1994-04-19 Dierbeck Robert F Modular heat exchanger
FR2712674B1 (fr) * 1993-11-19 1996-01-19 Valeo Thermique Moteur Sa Echangeur de chaleur et procédé de refroidissement utilisant un fluide caloporteur à différentes températures.
DE9401035U1 (de) * 1994-01-22 1995-05-24 Behr Gmbh & Co, 70469 Stuttgart Kühleinrichtung für ein Kraftfahrzeug
DE19509654A1 (de) 1995-03-17 1996-09-19 Kloeckner Humboldt Deutz Ag Wärmetauschereinheit

Also Published As

Publication number Publication date
DE69908483D1 (de) 2003-07-10
FR2777643B1 (fr) 2000-06-30
FR2777643A1 (fr) 1999-10-22
DE69908483T2 (de) 2004-05-13
EP0952418A1 (de) 1999-10-27

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