WO1999067592A1 - Motor vehicle heat exchanger and method for making same - Google Patents

Motor vehicle heat exchanger and method for making same Download PDF

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Publication number
WO1999067592A1
WO1999067592A1 PCT/FR1999/001497 FR9901497W WO9967592A1 WO 1999067592 A1 WO1999067592 A1 WO 1999067592A1 FR 9901497 W FR9901497 W FR 9901497W WO 9967592 A1 WO9967592 A1 WO 9967592A1
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WO
WIPO (PCT)
Prior art keywords
cover
covers
fluid
heat exchanger
exchanger according
Prior art date
Application number
PCT/FR1999/001497
Other languages
French (fr)
Inventor
Christophe Chevallier
Laurent Palanchon
Original Assignee
Valeo Climatisation
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 filed Critical Valeo Climatisation
Priority to DE69910533T priority Critical patent/DE69910533T2/en
Priority to EP99957195A priority patent/EP1015838B1/en
Publication of WO1999067592A1 publication Critical patent/WO1999067592A1/en

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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
    • F28F9/0202—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
    • F28F9/0209—Header boxes having their inner space divided by partitions for elongated header box, e.g. with transversal and longitudinal partitions having only transversal partitions
    • 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
    • F28D1/05375—Assemblies of conduits connected to common headers, e.g. core type radiators with particular pattern of flow, e.g. change of flow direction

Definitions

  • the invention relates to the technology of heat exchangers for motor vehicles.
  • the invention applies to the different types of heat exchangers that can be encountered in a vehicle, whether it is the cabin heating radiator, the engine cooling radiator, the circuit condenser. air conditioning, or 1 evaporator of an air conditioning loop.
  • These exchangers consist of a bundle of finned tubes performing the heat exchange with the external environment.
  • the tubes of the bundle are connected on either side by end blocks defining the direction of circulation of the fluid in the various tubes and making it possible to introduce the fluid into the exchanger and to extract it therefrom.
  • Each of the end blocks comprises a metal collector plate or "hole plate” into which the tubes of the bundle open, secured to this plate, for example by brazing, at the place of their outlet.
  • This plate generally designated “manifold”, is capped by a cover or “fluid box” so that the manifold and box define a common volume into which the corresponding ends of the tubes open, and through which the inlet is operated if necessary. and the fluid outlet.
  • the fluid box is provided with connections to intake and fluid collection lines. Its internal volume is further subdivided into a plurality of separate sub-volumes making it possible to join together certain groups of tubes of the bundle so as to define a predetermined configuration of circulation of fluid in the exchanger, with several back and forth of fluid in the bundle of tubes.
  • An end block therefore comprises at least one manifold and a fluid box which must be assembled together.
  • brazed assembly where all of the elements of the heat exchanger are passed through a brazing furnace allowing a filler metal to achieve both the joining of the various elements (manifolds, fluid boxes, partition walls, bundle of tubes, etc.) and their sealing.
  • Another assembly technique used is mechanical assembly in which all of the elements of the heat exchanger are mechanically joined together with a sealing gasket ensuring the seal between the manifold and the tubes, d on the one hand, and between the manifold and the fluid box, on the other hand.
  • the invention relates to a particular technique for manufacturing a heat exchanger, applicable in the case of the two abovementioned assembly techniques, in particular that of brazed assembly. It aims to rationalize production by simplifying assembly, standardizing elements and reducing the number of different parts to be assembled to make a given exchanger.
  • the heat exchanger is of the known type comprising a bundle of parallel tubes joined at each of their respective ends by a plate-shaped collector, each collector being capped by a fluid box sealingly closing the collector and defining with it ci a plurality of interior volumes imposing predetermined directions of circulation of the fluid in the tubes of the bundle.
  • the fluid box is formed of a plurality of juxtaposed single-piece individual covers, assembled together with the manifold and defining together said interior volumes of the fluid box.
  • said covers each define one of said interior volumes of the fluid box.
  • At least one of said covers alone defines one of said interior volumes of the fluid box, while at least one cover is provided side which partially covers the central cover to define with it another interior volume.
  • the side cover it is advantageous for the side cover to have an open face side wall which covers the central cover over a chosen length.
  • said covers comprise: a fluid intake cover and a similar fluid collection cover; and / or at least one fluid direction reversal cover; and / or a plurality of similar covers for reversing the direction of the fluid.
  • the collectors are advantageously provided on the side of the covers with a peripheral rim forming an external contour complementary to that, inside, defined by the covers juxtaposed prior to the assembly of these on the collector.
  • At least a first cover called the outside cover, completely covers at least one second cover, called the inside cover, the first cover and the second cover defining at least two interior volumes of the box to fluid.
  • the outer cover defines two housings on either side of the inner cover.
  • the outer cover and the inner cover have rims of different height, the height of the rims of the inner cover being less than the height of the rims of the outer cover so as to create a passage between said housings.
  • the inner cover and the outer cover have longitudinal edges disposed one against the other on the manifold.
  • the inner cover and / or the outer cover have one or more fluid inlet or outlet openings.
  • the inner cover is supplied with fluid, which fluid makes two separate passes in the bundle before being expelled by one or more orifices for expelling the outer cover.
  • the invention also relates to a method for manufacturing a heat exchanger of the type described above, method comprising the following steps: a) manufacturing, preferably by stamping, of a plurality of individual one-piece covers jointly defining said interior volumes fluid boxes, b) manufacture and assembly of a bundle of parallel tubes, c) fitting of the collectors at the ends of the bundle tubes, d) fitting, on each of the manifolds, corresponding individual covers, e) mechanical connection of the assembly.
  • the covers are preferably produced by stamping a metal sheet.
  • step e) the assembly is preferably carried out by joint brazing of the covers to the collectors and of the collectors to the tubes.
  • FIG. 1 is a general sectional view of a motor vehicle heat exchanger according to a first embodiment of the invention
  • FIG. 2 is a partial sectional view of a motor vehicle heat exchanger according to a second embodiment of the invention.
  • Figure 3 is a partial sectional view similar to Figure 2 in an alternative embodiment
  • Figure 4 is a partial perspective view corresponding to Figure 3;
  • FIG. 5 is a longitudinal sectional view of a heat exchanger according to a third embodiment of the invention.
  • FIG. 6 is a partial sectional view along line VI-VI of Figure 5.
  • FIG. 1 represents a heat exchanger in which the teachings of the invention are implemented. It comprises a bundle of parallel tubes 10 (here flat tubes) separated by fins 11 of wavy shape. It is provided on either side of the tube bundle of the end blocks joining together certain groups of tubes and defining a predetermined fluid circuit configuration in the heat exchanger, shown diagrammatically by the various arrows in FIG. 1.
  • Each end block comprises, in itself known manner, a metal plate 12, 14 generally called a “collector” joining the ends of the tubes of the bundle, plate with which is associated a cover-shaped element generally designated “fluid box” or “manifold box” tightly connected to the manifold by its peripheral rim.
  • the assembly constituted by the collector and the corresponding box defines volumes into which the tubes of the bundle open.
  • the fluid box of each end block consists of a plurality of juxtaposed individual covers each defining one of the various internal volumes of the fluid box.
  • the fluid box associated with the manifold 12 comprises a first cover 16 connected to a fluid intake pipe 18, a second cover 20 connected to a fluid collection pipe 22 and, between the two, a cover 24 of reversing the direction of circulation of the fluid.
  • the fluid box associated with the manifold 14, for its part, consists of two covers 26, 28 for reversing the direction of circulation of the fluid.
  • the dimensions of the covers are chosen so that the covers 16 and 20 are similar, as are those of the covers 24, 26 and 28: the fluid boxes of the heat exchanger can thus be produced from only two types of hoods, namely a fluid intake / collection hood such as 16 or 20, and a fluid flow direction reversing hood such as 24, 26 or 28.
  • the material of the collectors and covers is made of metal allowing brazing, for example of an aluminum alloy treated on the surface with a coating of filler metal.
  • a respective peripheral rim 32, 34 is provided on each of the manifolds 12, 34 dimensioned so as to correspond to the outline (envelope) of the various juxtaposed hoods mounted on this manifold; the overlapping of the respective edges of the collectors and of the covers associated with the peripheral edges of the covers perpendicular to the manifold allows satisfactory brazing because of the larger surface vis-à-vis the brazed elements.
  • the covers are preferably one-piece parts, for example produced by stamping a sheet. They each have, on the side of their free edge, a face oriented perpendicular to the plane of the collector, as in 36 or 38, so as to increase the surface vis-à-vis between two adjoining cowls or between an end cowl and the peripheral rim 32 or 34 of the associated collector.
  • the rest of the cover can take any appropriate form, dictated by the technical constraints of installation (for example a roof shape for the covers 16 and 20 connected to the intake and fluid collection pipes 18 and 22) or by considerations size or mechanics of the fluids (for example a flat shape for the covers 24, 26 and 28).
  • the exchanger comprises a manifold 12 similar to that of FIG. 1.
  • the fluid box associated with the manifold 12 comprises a first cover 40 provided with a fluid intake opening 42, a second cover 44 provided with a fluid collection pipe 46 and, between the two, a cover 48 for reversing the direction of circulation of the fluid.
  • the covers 40 and 44 are similar.
  • the cover 48 or central cover alone defines an interior volume, while the covers 40 and 44, or side covers, each partially cover the central cover 48 to define with it two other volumes.
  • the side covers 40 and 44 have respective side walls 50 and 52, each of which defines an open face facing the central cover 48.
  • the walls 50 and 52 cover the central cover over respective lengths L1 and L2 which may be identical or different.
  • the same side cover can be used to define different interior volumes as a function of the length of the covering L1 or L2.
  • the wall of the cover 48 is smooth so that the side walls 50 and 52 of the covers 42 and 44 project outwards.
  • the side wall of the central cover 48 has two shoulders or recesses 54 and 56 which allow to accommodate the ends of the side walls 50 and 52 of the covers 40 and 44 which are thus at the same level than the wall of the central cover.
  • the fluid box is formed by a first cover 140, called the outside cover, which completely covers a second cover 150, called the inside cover.
  • the first cover 140 and the second cover 150 are assembled to the manifold 12.
  • the interior cover 150 defines a first interior volume of the fluid box, while the exterior cover 140 defines two housings 143 and 144 on either side of the interior cover (FIG. 5). These two housings define two interior volumes which here form a single interior volume since the two housings 143 and 144 communicate with each other by a passage 145 (FIGS. 5 and 6). In a variant not shown, the housings 143 and 144 could be completely separated, therefore without communication, provided that the inner cover forms a watertight partition between the two housings. As can be seen in Figures 5 and 6, the outer cover 140 has transverse edges 141 and longitudinal 142 which have a greater height than the transverse edges 151 and longitudinal 152 of the inner cover. This non-limiting example of embodiment allows passage 145 between the housings 143 and 144.
  • an orifice 148 formed in both the inner cover 150 and the outer cover 140 allows the introduction or expulsion of a fluid directly into the inner cover 150.
  • One or more other orifices 122 can be arranged at the through the outer cover 140 (FIG. 5).
  • the longitudinal edges 152 of the inner cover 150 are attached respectively to the longitudinal edges 142 of the outer cover 140.
  • the edges 32 of the manifold 12 correspond to the longitudinal edges 141 and 142 of the outer cover 140.
  • the fluid box assembled with the manifold 14 (FIG. 5) consists of two covers 250 and 350 for reversing the direction of circulation of the fluid. Associated with an inner cover 150 and an outer cover 140, these two fluid direction reversal covers make it possible to make two separate passes of the fluid inside the bundle.
  • the fluid enters the interior cover 150 and is divided into two parts.
  • a first part of the fluid reaches the cover 250 to then go towards the housing 143, while a second part gains the cover 350 to then go towards the housing 144.
  • each of the parts of the fluid carries out a journey in two separate passes, forming back and forth.
  • the covers 150, 250 and 350 are similar, In an alternative embodiment (not shown), it could be envisaged to use a single cover in place of the two covers 250 and 350.
  • the outer cover 140 covers the entire manifold 12, but it is also possible to have, on the manifold 12, two or more inner covers 150 covered by two or more outer covers 140.
  • the invention is not limited to the embodiments described above by way of examples and is susceptible of numerous variants.
  • the invention can also be applied to heat exchangers assembled mechanically, without soldering.

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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)

Abstract

The invention concerns a heat exchanger comprising an array of parallel tubes (10) assembled at each of their respective ends by a manifold (12; 14) in the form of a plate, each manifold being topped with a fluid box tightly closing the manifold and defining therewith a plurality of internal volumes forcing the fluid to circulate in predetermined directions in the tube array. The invention is characterised in that the fluid box is formed by a plurality of individual single-piece covers (16, 20, 24; 26, 28) jointly assembled to the manifold and defining said fluid box internal volumes. Said covers can in particular comprise similar fluid intake (16) and fluid collecting (20) covers, and covers reversing the fluid flow direction (24; 26, 28), likewise similar.

Description

Echanqeur de chaleur pour véhicule automobile, et son procédé de fabricationHeat exchanger for a motor vehicle, and its manufacturing process
L'invention concerne la technologie des échangeurs de chaleur pour les véhicules automobiles.The invention relates to the technology of heat exchangers for motor vehicles.
L'invention s'applique aux différents types d' échangeurs de chaleur que l'on peut rencontrer dans un véhicule, qu'il s'agisse du radiateur de chauffage de l'habitacle, du radiateur de refroidissement du moteur, du condenseur du circuit de climatisation, ou encore de 1 ' évaporateur d'une boucle de climatisation.The invention applies to the different types of heat exchangers that can be encountered in a vehicle, whether it is the cabin heating radiator, the engine cooling radiator, the circuit condenser. air conditioning, or 1 evaporator of an air conditioning loop.
Ces échangeurs sont constitués d'un faisceau de tubes à ailettes réalisant l'échange thermique avec le milieu extérieur. Les tubes du faisceau sont reliés de part et d'autre par des blocs d'extrémité définissant le sens de circulation du fluide dans les divers tubes et permettant d'introduire le fluide dans l'échangeur et de l'en extraire.These exchangers consist of a bundle of finned tubes performing the heat exchange with the external environment. The tubes of the bundle are connected on either side by end blocks defining the direction of circulation of the fluid in the various tubes and making it possible to introduce the fluid into the exchanger and to extract it therefrom.
Chacun des blocs d'extrémité comporte une plaque collectrice ou "plaque à trous" métallique dans laquelle débouchent les tubes du faisceau, solidarisés à cette plaque, par exemple par brasage, a l'endroit de leur débouché. Cette plaque, généralement désignée "collecteur", est coiffée par un couvercle ou "boîte à fluide" de manière que collecteur et boîte définissent un volume commun dans lequel débouchent les extrémités correspondantes des tubes, et par lequel sont opérées le cas échéant l'entrée et la sortie du fluide.Each of the end blocks comprises a metal collector plate or "hole plate" into which the tubes of the bundle open, secured to this plate, for example by brazing, at the place of their outlet. This plate, generally designated "manifold", is capped by a cover or "fluid box" so that the manifold and box define a common volume into which the corresponding ends of the tubes open, and through which the inlet is operated if necessary. and the fluid outlet.
La boîte à fluide est pourvue de raccordements à des conduites d'admission et de collecte de fluide. Son volume inté- rieur est en outre subdivisé en une pluralité de sous-volumes distincts permettant de réunir ensemble certains groupes de tubes du faisceau de manière à définir une configuration de circulation de fluide prédéterminée dans l'échangeur, avec plusieurs allers et retours de fluide dans le faisceau de tubes. Un bloc d'extrémité comprend donc au moins un collecteur et une boîte à fluide qu'il y a lieu d'assembler ensemble.The fluid box is provided with connections to intake and fluid collection lines. Its internal volume is further subdivided into a plurality of separate sub-volumes making it possible to join together certain groups of tubes of the bundle so as to define a predetermined configuration of circulation of fluid in the exchanger, with several back and forth of fluid in the bundle of tubes. An end block therefore comprises at least one manifold and a fluid box which must be assembled together.
L'une des techniques d'assemblage couramment utilisée à cet effet est l'assemblage brasé, où l'ensemble des éléments de l'échangeur thermique est passé dans un four de brasage permettant à un métal d'apport de réaliser à la fois la solidarisation des divers éléments (collecteurs, boîtes à fluide, cloisons de séparation, faisceau de tubes, etc.) et leur étanchéité.One of the assembly techniques commonly used for this purpose is brazed assembly, where all of the elements of the heat exchanger are passed through a brazing furnace allowing a filler metal to achieve both the joining of the various elements (manifolds, fluid boxes, partition walls, bundle of tubes, etc.) and their sealing.
Une autre technique d'assemblage utilisée est l'assemblage mécanique dans laquelle l'ensemble des éléments de l'échangeur thermique sont solidarisés mécaniquement avec interpo- sition d'un joint d'étanchéité assurant l'étanchéité entre le collecteur et les tubes, d'une part, et entre le collecteur et la boîte à fluide, d'autre part.Another assembly technique used is mechanical assembly in which all of the elements of the heat exchanger are mechanically joined together with a sealing gasket ensuring the seal between the manifold and the tubes, d on the one hand, and between the manifold and the fluid box, on the other hand.
L'invention vise une technique particulière de fabrication d'un échangeur de chaleur, applicable dans le cas des deux techniques d'assemblage précitées, en particulier celui de l'assemblage brasé. Elle vise à rationaliser la production par simplification de l'assemblage, standardisation des éléments et réduction du nombre de pièces différentes à assembler pour réaliser un échangeur donné.The invention relates to a particular technique for manufacturing a heat exchanger, applicable in the case of the two abovementioned assembly techniques, in particular that of brazed assembly. It aims to rationalize production by simplifying assembly, standardizing elements and reducing the number of different parts to be assembled to make a given exchanger.
L'échangeur de chaleur est du type connu comprenant un faisceau de tubes parallèles réunis à chacune de leurs extrémités respectives par un collecteur en forme de plaque, chaque collecteur étant coiffé par une boîte à fluide fermant de manière étanche le collecteur et définissant avec celui-ci une pluralité de volumes intérieurs imposant des sens prédéterminés de circulation du fluide dans les tubes du faisceau.The heat exchanger is of the known type comprising a bundle of parallel tubes joined at each of their respective ends by a plate-shaped collector, each collector being capped by a fluid box sealingly closing the collector and defining with it ci a plurality of interior volumes imposing predetermined directions of circulation of the fluid in the tubes of the bundle.
De façon caractéristique de l'invention, la boîte à fluide est formée d'une pluralité de capots individuels monoblocs juxtaposés, assemblés ensemble au collecteur et définissant conjointement lesdits volumes intérieurs de la boîte à fluide.Characteristically of the invention, the fluid box is formed of a plurality of juxtaposed single-piece individual covers, assembled together with the manifold and defining together said interior volumes of the fluid box.
Dans une première forme générale de réalisation de l'inven- tion, lesdits capots définissent chacun l'un desdits volumes intérieurs de la boîte à fluide.In a first general embodiment of the invention, said covers each define one of said interior volumes of the fluid box.
Dans une deuxième forme générale de réalisation de l'invention, l'un au moins desdits capots, dit capot central, définit à lui seul l'un desdits volumes intérieurs de la boîte à fluide, tandis qu'il est prévu au moins un capot latéral qui recouvre partiellement le capot central pour définir avec lui un autre volume intérieur.In a second general embodiment of the invention, at least one of said covers, called central cover, alone defines one of said interior volumes of the fluid box, while at least one cover is provided side which partially covers the central cover to define with it another interior volume.
Dans ce dernier cas, il est avantageux que le capot latéral présente une paroi latérale à face ouverte qui recouvre le capot central sur une longueur choisie.In the latter case, it is advantageous for the side cover to have an open face side wall which covers the central cover over a chosen length.
De préférence, lesdits capots comprennent : un capot d'admis- sion de fluide et un capot de collecte de fluide semblables; et/ou au moins un capot d'inversion de sens de fluide ; et/ou une pluralité de capots, semblables, d'inversion de sens de fluide.Preferably, said covers comprise: a fluid intake cover and a similar fluid collection cover; and / or at least one fluid direction reversal cover; and / or a plurality of similar covers for reversing the direction of the fluid.
Les collecteurs sont avantageusement pourvus du côté des capots d'un rebord périphérique formant un contour extérieur complémentaire de celui, intérieur, défini par les capots juxtaposés préalablement à l'assemblage de ceux-ci sur le collecteur.The collectors are advantageously provided on the side of the covers with a peripheral rim forming an external contour complementary to that, inside, defined by the covers juxtaposed prior to the assembly of these on the collector.
Dans une troisième forme générale de réalisation de l'invention, au moins un premier capot, dit capot extérieur, recouvre totalement au moins un deuxième capot, dit capot intérieur, le premier capot et le deuxième capot définissant au moins deux volumes intérieurs de la boîte à fluide.In a third general embodiment of the invention, at least a first cover, called the outside cover, completely covers at least one second cover, called the inside cover, the first cover and the second cover defining at least two interior volumes of the box to fluid.
Selon une particularité de ce mode de réalisation, le capot extérieur définit deux logements de part et d'autre du capot intérieur. Selon encore une autre particularité, le capot extérieur et le capot intérieur ont des rebords de hauteur différente, la hauteur des rebords du capot intérieur étant inférieure à la hauteur des rebords du capot extérieur de manière à créer un passage entre lesdits logements.According to a feature of this embodiment, the outer cover defines two housings on either side of the inner cover. According to yet another feature, the outer cover and the inner cover have rims of different height, the height of the rims of the inner cover being less than the height of the rims of the outer cover so as to create a passage between said housings.
Selon encore une autre particularité, le capot intérieur et le capot extérieur ont des rebords longitudinaux disposés l'un contre l'autre sur le collecteur.According to yet another feature, the inner cover and the outer cover have longitudinal edges disposed one against the other on the manifold.
Selon encore une autre particularité, le capot intérieur et/ou le capot extérieur comportent un ou plusieurs orifices d'admission ou d'expulsion de fluide.According to yet another feature, the inner cover and / or the outer cover have one or more fluid inlet or outlet openings.
Selon encore une autre particularité, le capot intérieur est alimenté en fluide, lequel fluide effectue deux passes séparées dans le faisceau avant d'être expulsé par un ou plusieurs orifices d'expulsion du capot extérieur.According to yet another feature, the inner cover is supplied with fluid, which fluid makes two separate passes in the bundle before being expelled by one or more orifices for expelling the outer cover.
L'invention vise également un procédé de fabrication d'un échangeur de chaleur du type décrit ci-dessus, procédé comportant les étapes suivantes : a) fabrication, de préférence par emboutissage, d'une pluralité de capots individuels monoblocs définissant conjointement lesdits volumes intérieurs des boîtes à fluide, b) fabrication et assemblage d'un faisceau de tubes parallèles, c) mise en place des collecteurs aux extrémités des tubes du faisceau, d) mise en place, sur chacun des collecteurs, des capots individuels correspondants, e) solidarisation mécanique de l'ensemble.The invention also relates to a method for manufacturing a heat exchanger of the type described above, method comprising the following steps: a) manufacturing, preferably by stamping, of a plurality of individual one-piece covers jointly defining said interior volumes fluid boxes, b) manufacture and assembly of a bundle of parallel tubes, c) fitting of the collectors at the ends of the bundle tubes, d) fitting, on each of the manifolds, corresponding individual covers, e) mechanical connection of the assembly.
A l'étape a), les capots sont de préférence fabriqués par emboutissage d'une tôle métallique.In step a), the covers are preferably produced by stamping a metal sheet.
Dans l'étape e), la solidarisation de l'ensemble s'effectue de préférence par brasage conjoint des capots aux collecteurs et des collecteurs aux tubes. D'autres caractéristiques et avantages de l'invention apparaîtront à la lecture de la description détaillée ci- dessous, faite seulement à titre d'exemple, et en référence aux dessins annexés, sur lesquels :In step e), the assembly is preferably carried out by joint brazing of the covers to the collectors and of the collectors to the tubes. Other characteristics and advantages of the invention will appear on reading the detailed description below, given only by way of example, and with reference to the appended drawings, in which:
- la figure 1 est une vue générale en coupe d'un échangeur de chaleur de véhicule automobile selon une première forme de réalisation de l'invention ;- Figure 1 is a general sectional view of a motor vehicle heat exchanger according to a first embodiment of the invention;
- la figure 2 est une vue partielle en coupe d'un échangeur de chaleur de véhicule automobile selon une deuxième forme de réalisation de l'invention ;- Figure 2 is a partial sectional view of a motor vehicle heat exchanger according to a second embodiment of the invention;
- la figure 3 est une vue partielle en coupe analogue à la figure 2 dans une variante de réalisation ;- Figure 3 is a partial sectional view similar to Figure 2 in an alternative embodiment;
- la figure 4 est une vue partielle en perspective correspondant à la figure 3 ;- Figure 4 is a partial perspective view corresponding to Figure 3;
- la figure 5 est une vue en coupe longitudinale d'un échangeur de chaleur selon une troisième forme de réalisation de l'invention ; et- Figure 5 is a longitudinal sectional view of a heat exchanger according to a third embodiment of the invention; and
- la figure 6 est une vue partielle en coupe selon la ligne VI-VI de la figure 5.- Figure 6 is a partial sectional view along line VI-VI of Figure 5.
La figure 1 représente un échangeur de chaleur dans lequel sont mis en oeuvre les enseignements de l'invention. Il comporte un faisceau de tubes parallèles 10 (ici des tubes plats) séparés par des ailettes 11 de forme ondulée. Il est prévu de part et d'autre du faisceau de tubes des blocs d'extrémité réunissant ensemble certains groupes de tubes et définissant une configuration de circuit de fluide prédéterminée dans l'échangeur thermique, schématisée par les différentes flèches sur la figure 1.FIG. 1 represents a heat exchanger in which the teachings of the invention are implemented. It comprises a bundle of parallel tubes 10 (here flat tubes) separated by fins 11 of wavy shape. It is provided on either side of the tube bundle of the end blocks joining together certain groups of tubes and defining a predetermined fluid circuit configuration in the heat exchanger, shown diagrammatically by the various arrows in FIG. 1.
Chaque bloc d'extrémité comporte, de manière en elle-même connue, une plaque métallique 12, 14 généralement appelée "collecteur" réunissant les extrémités des tubes du faisceau, plaque à laquelle est associé un élément en forme de couvercle généralement désigné "boîte à fluide" ou "boîte collectrice" relié de manière étanche au collecteur par son rebord périphérique. L'ensemble constitué par le collecteur et la boîte correspondante définit des volumes dans lesquels débouchent les tubes du faisceau. Ces divers éléments (collecteurs, boîtes et tubes) sont solidarisés ensemble de manière étanche par brasage, c'est-à-dire par la fusion contrôlée d'un métal d'apport pendant une étape de passage dans un four de brasage.Each end block comprises, in itself known manner, a metal plate 12, 14 generally called a "collector" joining the ends of the tubes of the bundle, plate with which is associated a cover-shaped element generally designated "fluid box" or "manifold box" tightly connected to the manifold by its peripheral rim. The assembly constituted by the collector and the corresponding box defines volumes into which the tubes of the bundle open. These various elements (collectors, boxes and tubes) are joined together in a sealed manner by brazing, that is to say by the controlled melting of a filler metal during a step of passage through a brazing furnace.
Selon une première forme de réalisation de l'invention, la boîte à fluide de chaque bloc d'extrémité est constituée d'une pluralité de capots individuels juxtaposés définissant chacun l'un des divers volumes internes de la boîte à fluide.According to a first embodiment of the invention, the fluid box of each end block consists of a plurality of juxtaposed individual covers each defining one of the various internal volumes of the fluid box.
Ainsi, la boîte à fluide associée au collecteur 12 comporte un premier capot 16 relié à une conduite d'admission de fluide 18, un deuxième capot 20 relié à une conduite de collecte de fluide 22 et, entre les deux, un capot 24 d'inversion du sens de circulation du fluide.Thus, the fluid box associated with the manifold 12 comprises a first cover 16 connected to a fluid intake pipe 18, a second cover 20 connected to a fluid collection pipe 22 and, between the two, a cover 24 of reversing the direction of circulation of the fluid.
La boîte à fluide associée au collecteur 14 est, quant à elle, constituée de deux capots 26, 28 d'inversion du sens de circulation du fluide.The fluid box associated with the manifold 14, for its part, consists of two covers 26, 28 for reversing the direction of circulation of the fluid.
Très avantageusement, pour permettre une rationalisation du processus de fabrication, les dimensions des capots sont choisies pour que les capots 16 et 20 soient semblables, de même que celles des capots 24, 26 et 28 : les boîte à fluide de l'échangeur thermique peuvent ainsi être réalisées à partir de deux types de capots seulement, à savoir un capot d' admission/collecte de fluide tel que 16 ou 20, et un capot d'inversion du sens de circulation de fluide tel que 24, 26 ou 28.Very advantageously, to allow a rationalization of the manufacturing process, the dimensions of the covers are chosen so that the covers 16 and 20 are similar, as are those of the covers 24, 26 and 28: the fluid boxes of the heat exchanger can thus be produced from only two types of hoods, namely a fluid intake / collection hood such as 16 or 20, and a fluid flow direction reversing hood such as 24, 26 or 28.
Le matériau des collecteurs et des capots est en métal permettant le brasage, par exemple en un alliage d'aluminium traité en surface par un revêtement de métal d'apport. Pour faciliter l'assemblage des différents capots aux collecteurs avant brasage, on prévoit sur chacun des collecteurs 12, 14 un rebord périphérique respectif 32, 34 dimen- sionné de manière à correspondre au contour (enveloppe) des différents capots juxtaposés montés sur ce collecteur ; le recouvrement des bords respectifs des collecteurs et des capots associés avec les rebords périphériques des capots perpendiculaires au collecteur permet un brasage satisfaisant du fait de la plus grande surface en vis-à-vis des éléments brasés.The material of the collectors and covers is made of metal allowing brazing, for example of an aluminum alloy treated on the surface with a coating of filler metal. To facilitate the assembly of the various hoods to the manifolds before brazing, a respective peripheral rim 32, 34 is provided on each of the manifolds 12, 34 dimensioned so as to correspond to the outline (envelope) of the various juxtaposed hoods mounted on this manifold; the overlapping of the respective edges of the collectors and of the covers associated with the peripheral edges of the covers perpendicular to the manifold allows satisfactory brazing because of the larger surface vis-à-vis the brazed elements.
Les capots sont de préférence des pièces monobloc, par exemple réalisés par emboutissage d'une tôle. Ils présentent chacun, du côté de leur bord libre, une face orientée perpendiculairement au plan du collecteur, comme en 36 ou 38, de manière à augmenter la surface en vis-à-vis entre deux capots attenants ou entre un capot d'extrémité et le rebord périphérique 32 ou 34 du collecteur associé. Le reste du capot peut prendre toute forme appropriée, dictée par les contraintes techniques d'implantation (par exemple une forme en toit pour les capots 16 et 20 reliés aux conduites d'admission et de collecte de fluide 18 et 22) ou par des considérations d'encombrement ou de mécanique des fluides (par exemple une forme plate pour les capots 24, 26 et 28).The covers are preferably one-piece parts, for example produced by stamping a sheet. They each have, on the side of their free edge, a face oriented perpendicular to the plane of the collector, as in 36 or 38, so as to increase the surface vis-à-vis between two adjoining cowls or between an end cowl and the peripheral rim 32 or 34 of the associated collector. The rest of the cover can take any appropriate form, dictated by the technical constraints of installation (for example a roof shape for the covers 16 and 20 connected to the intake and fluid collection pipes 18 and 22) or by considerations size or mechanics of the fluids (for example a flat shape for the covers 24, 26 and 28).
Dans une seconde forme de réalisation représentée à la figure 2, l'échangeur comporte un collecteur 12 analogue à celui de la figure 1. La boîte à fluide associée au collecteur 12 comporte un premier capot 40 muni d'une ouverture d'admission de fluide 42, un deuxième capot 44 muni d'une conduite de collecte de fluide 46 et, entre les deux, un capot 48 d'inversion du sens de circulation du fluide. Les capots 40 et 44 sont semblables.In a second embodiment shown in FIG. 2, the exchanger comprises a manifold 12 similar to that of FIG. 1. The fluid box associated with the manifold 12 comprises a first cover 40 provided with a fluid intake opening 42, a second cover 44 provided with a fluid collection pipe 46 and, between the two, a cover 48 for reversing the direction of circulation of the fluid. The covers 40 and 44 are similar.
Le capot 48, ou capot central définit à lui seul un volume intérieur, alors que les capots 40 et 44, ou capots latéraux, recouvrent chacun en partie le capot central 48 pour définir avec lui deux autres volumes . Les capots latéraux 40 et 44 ont des parois latérales respectives 50 et 52, dont chacune délimite une face ouverte tournée vers le capot central 48. Les parois 50 et 52 viennent recouvrir le capot central sur des longueurs respectives Ll et L2 qui peuvent être identiques ou différentes .The cover 48, or central cover alone defines an interior volume, while the covers 40 and 44, or side covers, each partially cover the central cover 48 to define with it two other volumes. The side covers 40 and 44 have respective side walls 50 and 52, each of which defines an open face facing the central cover 48. The walls 50 and 52 cover the central cover over respective lengths L1 and L2 which may be identical or different.
Ainsi un même capot latéral peut être utilisé pour définir des volumes intérieurs différents en fonction de la longueur du recouvrement Ll ou L2.Thus the same side cover can be used to define different interior volumes as a function of the length of the covering L1 or L2.
Dans le cas de la figure 2, la paroi du capot 48 est lisse si bien que les parois latérales 50 et 52 des capots 42 et 44 sont en saillie vers l'extérieur.In the case of FIG. 2, the wall of the cover 48 is smooth so that the side walls 50 and 52 of the covers 42 and 44 project outwards.
Par contre, dans la variante des figures 3 et 4 , la paroi latérale du capot central 48 comporte deux épaulements ou décrochements 54 et 56 qui permettent de loger les extrémités des parois latérales 50 et 52 des capots 40 et 44 qui se trouvent ainsi au même niveau que la paroi du capot central.By cons, in the variant of Figures 3 and 4, the side wall of the central cover 48 has two shoulders or recesses 54 and 56 which allow to accommodate the ends of the side walls 50 and 52 of the covers 40 and 44 which are thus at the same level than the wall of the central cover.
Selon une troisième forme de réalisation de l'invention, représentée aux figures 5 et 6 , la boîte à fluide est formée d'un premier capot 140, dit capot extérieur, qui recouvre totalement un deuxième capot 150, dit capot intérieur. Le premier capot 140 et le deuxième capot 150 sont assemblés au collecteur 12.According to a third embodiment of the invention, shown in FIGS. 5 and 6, the fluid box is formed by a first cover 140, called the outside cover, which completely covers a second cover 150, called the inside cover. The first cover 140 and the second cover 150 are assembled to the manifold 12.
Le capot intérieur 150 définit un premier volume intérieur de la boîte à fluide, tandis que le capot extérieur 140 définit deux logements 143 et 144 de part et d'autre du capot intérieur (figure 5). Ces deux logements définissent deux volumes intérieurs qui forment ici un volume intérieur unique étant donné que les deux logements 143 et 144 communiquent entre eux par un passage 145 (figures 5 et 6). Dans une variante non représentée, les logements 143 et 144 pourraient être complètement séparés, donc sans communication, à condition que le capot intérieur forme une cloison étanche entre les deux logements. Comme on peut le voir sur les figures 5 et 6, le capot extérieur 140 comporte des rebords transversaux 141 et longitudinaux 142 qui ont une plus grande hauteur que les rebords transversaux 151 et longitudinaux 152 du capot intérieur. Cet exemple de réalisation, non limitatif, permet de réaliser le passage 145 entre les logements 143 et 144.The interior cover 150 defines a first interior volume of the fluid box, while the exterior cover 140 defines two housings 143 and 144 on either side of the interior cover (FIG. 5). These two housings define two interior volumes which here form a single interior volume since the two housings 143 and 144 communicate with each other by a passage 145 (FIGS. 5 and 6). In a variant not shown, the housings 143 and 144 could be completely separated, therefore without communication, provided that the inner cover forms a watertight partition between the two housings. As can be seen in Figures 5 and 6, the outer cover 140 has transverse edges 141 and longitudinal 142 which have a greater height than the transverse edges 151 and longitudinal 152 of the inner cover. This non-limiting example of embodiment allows passage 145 between the housings 143 and 144.
Avantageusement, un orifice 148 pratiqué à la fois dans le capot intérieur 150 et le capot extérieur 140 permet l'intro- duction ou l'expulsion d'un fluide directement dans le capot intérieur 150. Un ou plusieurs autres orifices 122 peuvent être aménagés au travers du capot extérieur 140 (figure 5).Advantageously, an orifice 148 formed in both the inner cover 150 and the outer cover 140 allows the introduction or expulsion of a fluid directly into the inner cover 150. One or more other orifices 122 can be arranged at the through the outer cover 140 (FIG. 5).
Pour améliorer l'étanchéité au niveau de l'orifice 148, les rebords longitudinaux 152 du capot intérieur 150 sont accolés respectivement aux rebords longitudinaux 142 du capot extérieur 140. De même, les rebords 32 du collecteur 12 (figure 6) correspondent aux rebords longitudinaux 141 et 142 du capot extérieur 140.To improve the seal at the orifice 148, the longitudinal edges 152 of the inner cover 150 are attached respectively to the longitudinal edges 142 of the outer cover 140. Likewise, the edges 32 of the manifold 12 (FIG. 6) correspond to the longitudinal edges 141 and 142 of the outer cover 140.
La boîte à fluide assemblée au collecteur 14 (figure 5) est constituée de deux capots 250 et 350 d'inversion du sens de circulation du fluide. Associés à un capot intérieur 150 et un capot extérieur 140, ces deux capots d'inversion du sens du fluide permettent de réaliser deux passes séparées du fluide à l'intérieur du faisceau.The fluid box assembled with the manifold 14 (FIG. 5) consists of two covers 250 and 350 for reversing the direction of circulation of the fluid. Associated with an inner cover 150 and an outer cover 140, these two fluid direction reversal covers make it possible to make two separate passes of the fluid inside the bundle.
Il en résulte que le fluide pénètre à l'intérieur du capot intérieur 150 et est divisé en deux parties. Une première partie du fluide gagne le capot 250 pour aller ensuite vers le logement 143, tandis qu'une deuxième partie gagne le capot 350 pour aller ensuite vers le logement 144. Ainsi, chacune des parties du fluide réalise un parcours en deux passes séparées, formant aller et retour.As a result, the fluid enters the interior cover 150 and is divided into two parts. A first part of the fluid reaches the cover 250 to then go towards the housing 143, while a second part gains the cover 350 to then go towards the housing 144. Thus, each of the parts of the fluid carries out a journey in two separate passes, forming back and forth.
Avantageusement, les capots 150, 250 et 350 sont semblables, Dans une variante de réalisation (non représentée), il pourrait être envisagé d'utiliser un seul capot à la place des deux capots 250 et 350.Advantageously, the covers 150, 250 and 350 are similar, In an alternative embodiment (not shown), it could be envisaged to use a single cover in place of the two covers 250 and 350.
De manière avantageuse, le capot extérieur 140 recouvre la totalité du collecteur 12, mais il est aussi possible de disposer, sur le collecteur 12, deux ou plusieurs capots intérieurs 150 recouverts par deux ou plusieurs capots extérieurs 140.Advantageously, the outer cover 140 covers the entire manifold 12, but it is also possible to have, on the manifold 12, two or more inner covers 150 covered by two or more outer covers 140.
On comprendra que, de manière générale, l'invention permet d'utiliser des capots qui sont juxtaposés et/ou se recouvrent mutuellement .It will be understood that, in general, the invention makes it possible to use covers which are juxtaposed and / or overlap each other.
L'invention n'est pas limitée aux formes de réalisation décrites précédemment à titres d'exemples et est susceptibles de nombreuses variantes. Ainsi l'invention peut s'appliquer aussi à des échangeurs de chaleur assemblés mécaniquement, sans brasage. The invention is not limited to the embodiments described above by way of examples and is susceptible of numerous variants. Thus the invention can also be applied to heat exchangers assembled mechanically, without soldering.

Claims

Revendications claims
1. Échangeur de chaleur pour véhicule automobile, comprenant un faisceau de tubes parallèles (10) réunis à chacune de leurs extrémités respectives par un collecteur (12 ; 14) en forme de plaque, chaque collecteur étant coiffé par une boîte à fluide fermant de manière étanche le collecteur et définissant avec celui-ci une pluralité de volumes intérieurs imposant des sens prédéterminés de circulation du fluide dans les tubes du faisceau, caractérisé en ce que la boîte à fluide est formée d'une pluralité de capots individuels monoblocs (16, 20, 24 ; 26, 28 ; 42, 44 , 48 ; 140, 150, 250, 350) assemblés au collecteur et définissant conjointement lesdits volumes intérieurs de la boîte à fluide.1. Heat exchanger for a motor vehicle, comprising a bundle of parallel tubes (10) joined at each of their respective ends by a collector (12; 14) in the form of a plate, each collector being capped by a fluid box which closes so seals the manifold and defines therewith a plurality of interior volumes imposing predetermined directions of circulation of the fluid in the tubes of the bundle, characterized in that the fluid box is formed of a plurality of individual one-piece covers (16, 20 , 24; 26, 28; 42, 44, 48; 140, 150, 250, 350) assembled to the manifold and jointly defining said interior volumes of the fluid box.
2. Échangeur de chaleur selon la revendication 1, caractérisé en ce que lesdits capots (16, 20 ,24 ; 26, 28 ; 140, 150, 250, 350) définissent chacun l'un desdits volumes intérieurs de la boîte à fluide.2. Heat exchanger according to claim 1, characterized in that said covers (16, 20, 24; 26, 28; 140, 150, 250, 350) each define one of said interior volumes of the fluid box.
3. Échangeur de chaleur selon la revendication 1, caractérisé en ce que l'un au moins (48) desdits capots, dit capot central, définit à lui seul l'un desdits volumes intérieurs de la boîte à fluide, tandis qu'il est prévu au moins un capot latéral (40, 44) qui recouvre partiellement le capot central pour définir avec lui un autre volume intérieur.3. Heat exchanger according to claim 1, characterized in that at least one (48) of said covers, called central cover, alone defines one of said interior volumes of the fluid box, while it is provided at least one side cover (40, 44) which partially covers the central cover to define with it another interior volume.
4. Échangeur de chaleur selon la revendication 3, caractérisé en ce que le capot latéral (40, 44) présente une paroi latérale (50, 52) à face ouverte qui recouvre le capot central sur une longueur choisie (Ll, L2 ) .4. Heat exchanger according to claim 3, characterized in that the side cover (40, 44) has a side wall (50, 52) with open face which covers the central cover over a chosen length (L1, L2).
5. Échangeur de chaleur selon l'une des revendications 1 à 4, caractérisé en ce que lesdits capots comprennent un capot d'admission de fluide (16 ; 40) et un capot de collecte de fluide (20 ; 44) semblables.5. Heat exchanger according to one of claims 1 to 4, characterized in that said covers comprise a fluid intake cover (16; 40) and a similar fluid collection cover (20; 44).
6. Échangeur de chaleur selon l'une des revendications 1 et 2, caractérisé en ce qu'au moins un premier capot (140), dit capot extérieur, recouvre totalement au moins un deuxième capot (150), dit capot intérieur, le premier capot (140) et le deuxième capot (150) définissant au moins deux volumes intérieurs de la boîte à fluide.6. Heat exchanger according to one of claims 1 and 2, characterized in that at least one first cover (140), said outer cover, completely covers at least a second cover (150), said inner cover, the first cover (140) and the second cover (150) defining at least two interior volumes of the fluid box.
7. Échangeur de chaleur selon la revendication 6, caractérisé en ce que le capot extérieur (140) définit deux logements (143, 144) de part et d'autre du capot intérieur (150).7. Heat exchanger according to claim 6, characterized in that the outer cover (140) defines two housings (143, 144) on either side of the inner cover (150).
8. Échangeur de chaleur selon la revendication 7, caractérisé en ce que le capot extérieur (140) et le capot intérieur (150) ont des rebords respectifs (141, 142 ; 151, 152) et en ce que la hauteur des rebords (151, 152) dudit capot intérieur (150) est inférieure à la hauteur des rebords (141, 142) dudit capot extérieur (140) de manière à créer un passage (145) entre lesdits logements (143, 144).8. Heat exchanger according to claim 7, characterized in that the outer cover (140) and the inner cover (150) have respective flanges (141, 142; 151, 152) and in that the height of the flanges (151 , 152) of said inner cover (150) is less than the height of the flanges (141, 142) of said outer cover (140) so as to create a passage (145) between said housings (143, 144).
9. Échangeur de chaleur selon l'une des revendications 6 à 8, caractérisé en ce que le capot intérieur (150) et le capot extérieur (140) ont des rebords longitudinaux respectifs (152, 142) qui sont disposés l'un contre l'autre sur le collecteur (12).9. Heat exchanger according to one of claims 6 to 8, characterized in that the inner cover (150) and the outer cover (140) have respective longitudinal edges (152, 142) which are arranged one against the other. other on the collector (12).
10. Échangeur de chaleur selon l'une des revendications 6 à 9, caractérisé en ce que le capot intérieur (150) et/ou le capot extérieur (140) comportent un ou plusieurs orifices d'admission ou d'expulsion de fluide (148).10. Heat exchanger according to one of claims 6 to 9, characterized in that the inner cover (150) and / or the outer cover (140) have one or more fluid inlet or outlet openings (148 ).
11. Échangeur de chaleur selon la revendication 7, caracté- risé en ce que le capot intérieur (150) est alimenté en fluide, ce fluide effectuant deux passes séparées dans le faisceau avant d'être expulsé par un ou plusieurs orifices d'expulsion (122) du capot extérieur.11. Heat exchanger according to claim 7, characterized in that the inner cover (150) is supplied with fluid, this fluid making two separate passes in the bundle before being expelled by one or more expulsion orifices ( 122) of the outer cover.
12. Échangeur de chaleur selon l'une des revendications 1 à 11, caractérisé en ce que lesdits capots comprennent au moins un capot d'inversion de sens de fluide (24 ; 26, 28 ; 48 ; 150, 250, 350). 12. Heat exchanger according to one of claims 1 to 11, characterized in that said covers comprise at least one fluid direction reversing cover (24; 26, 28; 48; 150, 250, 350).
13. Échangeur de chaleur selon la revendication 12, caractérisé en ce que lesdits capots comprennent une pluralité de capots d'inversion de sens de fluide (24 ; 26, 28 ; 48 ; 150, 250, 350) et en ce que ces capots sont semblables.13. Heat exchanger according to claim 12, characterized in that said covers comprise a plurality of fluid direction reversing covers (24; 26, 28; 48; 150, 250, 350) and in that these covers are alike.
14. Échangeur ..de chaleur selon l'une des revendications 1 à 13, caractérisé en ce que les collecteurs (12, 14) sont pourvus du côté des capots d'un rebord périphérique (32, 34) formant un contour extérieur complémentaire de celui, intérieur, défini par les capots juxtaposés préalablement à l'assemblage de ceux-ci sur le collecteur.14. heat exchanger according to one of claims 1 to 13, characterized in that the collectors (12, 14) are provided on the side of the covers with a peripheral flange (32, 34) forming an external contour complementary to that, interior, defined by the juxtaposed covers prior to the assembly of these on the collector.
15. Procédé de fabrication d'un échangeur de chaleur du type comprenant un faisceau de tubes parallèles (10) réunis à chacune de leurs extrémités respectives par un collecteur (12 ; 14) en forme de plaque, chaque collecteur étant coiffé par une boîte à fluide fermant de manière étanche le collecteur et définissant avec celui-ci une pluralité de volumes intérieurs imposant des sens prédéterminés de circulation du fluide dans les tubes du faisceau, procédé caractérisé par les étapes suivantes :15. A method of manufacturing a heat exchanger of the type comprising a bundle of parallel tubes (10) joined at each of their respective ends by a collector (12; 14) in the form of a plate, each collector being capped by a box fluid sealingly closing the manifold and defining with it a plurality of interior volumes imposing predetermined directions of circulation of the fluid in the tubes of the bundle, process characterized by the following steps:
a) fabrication d'une pluralité de capots individuels monobloc (16, 20, 24 ; 26, 28 ; 140, 150, 250, 350) définissant conjointement lesdits volumes intérieurs des boîtes à fluide,a) manufacture of a plurality of individual one-piece covers (16, 20, 24; 26, 28; 140, 150, 250, 350) jointly defining said interior volumes of the fluid boxes,
b) fabrication et assemblage d'un faisceau de tubes parallèles (10),b) manufacturing and assembling a bundle of parallel tubes (10),
c) mise en place des collecteurs aux extrémités des tubes du faisceau,c) placing the collectors at the ends of the bundle tubes,
d) mise en place, sur chacun des collecteurs, des capots individuels correspondants,d) fitting, on each of the collectors, corresponding individual covers,
e) solidarisation mécanique de l'ensemble, e) mechanical connection of the assembly,
16. Procédé selon la revendication 15, caractérisé en ce que, à l'étape a), les capots sont fabriqués par emboutissage d'une tôle métallique.16. The method of claim 15, characterized in that, in step a), the covers are produced by stamping a metal sheet.
17. Procédé selon l'une des revendication 15 et 16, caractérisé en ce que., à l'étape e), la solidarisation est effectuée par brasage conjoint des capots aux collecteurs et des collecteurs aux tubes. 17. Method according to one of claims 15 and 16, characterized in that., In step e), the joining is carried out by joint brazing of the covers to the collectors and collectors to the tubes.
PCT/FR1999/001497 1998-06-23 1999-06-22 Motor vehicle heat exchanger and method for making same WO1999067592A1 (en)

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DE69910533T DE69910533T2 (en) 1998-06-23 1999-06-22 HEAT EXCHANGER FOR MOTOR VEHICLES AND METHOD FOR THE PRODUCTION THEREOF
EP99957195A EP1015838B1 (en) 1998-06-23 1999-06-22 Motor vehicle heat exchanger and method for making same

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FR9807923A FR2780152B1 (en) 1998-06-23 1998-06-23 HEAT EXCHANGER FOR MOTOR VEHICLE, AND MANUFACTURING METHOD THEREOF
FR98/07923 1998-06-23

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GB556767A (en) * 1942-04-18 1943-10-20 Morris Motors Ltd Improvements relating to heat interchange apparatus
US3173482A (en) * 1962-11-21 1965-03-16 American Air Filter Co Quadrant baffle for heat exchange header
DE2300881A1 (en) * 1972-02-24 1973-09-06 Modine Mfg Co HEAT EXCHANGER
FR2478807A1 (en) * 1980-03-21 1981-09-25 Deville Ste Indle Heat exchanger end connection box - has coaxial connections to exterior and also to internal parallel tube groups
FR2676273A1 (en) * 1991-05-10 1992-11-13 Valeo Thermique Moteur Sa Fluid (header) box of tubular general shape for heat exchanger
DE4446817A1 (en) * 1994-01-17 1995-07-20 Thermal Waerme Kaelte Klima Evaporator for vehicle air conditioning unit
FR2753783A1 (en) * 1996-09-23 1998-03-27 Valeo Thermique Moteur Sa Heat exchanger collection box, especially for automobile air-conditioner
DE19746371A1 (en) * 1996-10-30 1998-05-07 Valeo Thermique Moteur Sa Heat exchanger with twin=chamber collection box

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB556767A (en) * 1942-04-18 1943-10-20 Morris Motors Ltd Improvements relating to heat interchange apparatus
US3173482A (en) * 1962-11-21 1965-03-16 American Air Filter Co Quadrant baffle for heat exchange header
DE2300881A1 (en) * 1972-02-24 1973-09-06 Modine Mfg Co HEAT EXCHANGER
FR2478807A1 (en) * 1980-03-21 1981-09-25 Deville Ste Indle Heat exchanger end connection box - has coaxial connections to exterior and also to internal parallel tube groups
FR2676273A1 (en) * 1991-05-10 1992-11-13 Valeo Thermique Moteur Sa Fluid (header) box of tubular general shape for heat exchanger
DE4446817A1 (en) * 1994-01-17 1995-07-20 Thermal Waerme Kaelte Klima Evaporator for vehicle air conditioning unit
FR2753783A1 (en) * 1996-09-23 1998-03-27 Valeo Thermique Moteur Sa Heat exchanger collection box, especially for automobile air-conditioner
DE19746371A1 (en) * 1996-10-30 1998-05-07 Valeo Thermique Moteur Sa Heat exchanger with twin=chamber collection box

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7748437B2 (en) * 2004-08-02 2010-07-06 Renault S.A.S. Heat exchanger with tube core, in particular for a supercharged internal combustion engine
JP2014513265A (en) * 2011-05-04 2014-05-29 ハラ、ビステオン、クライメイト、コントロール コーポレーション Cold storage heat exchanger
US9555687B2 (en) 2011-05-04 2017-01-31 Hanon Systems Cold-storage heat exchanger
US10220673B2 (en) 2011-05-04 2019-03-05 Hanon Systems Cold-storage heat exchanger

Also Published As

Publication number Publication date
FR2780152B1 (en) 2001-03-30
FR2780152A1 (en) 1999-12-24
EP1015838A1 (en) 2000-07-05
EP1015838B1 (en) 2003-08-20
DE69910533D1 (en) 2003-09-25
DE69910533T2 (en) 2004-06-24

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