EP3430339B1 - Heat exchanger, in particular for a vehicle, specifically a motor vehicle - Google Patents

Heat exchanger, in particular for a vehicle, specifically a motor vehicle Download PDF

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Publication number
EP3430339B1
EP3430339B1 EP17716945.5A EP17716945A EP3430339B1 EP 3430339 B1 EP3430339 B1 EP 3430339B1 EP 17716945 A EP17716945 A EP 17716945A EP 3430339 B1 EP3430339 B1 EP 3430339B1
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EP
European Patent Office
Prior art keywords
tubes
heat exchanger
tube
reinforcing part
fluid
Prior art date
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EP17716945.5A
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German (de)
French (fr)
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EP3430339A2 (en
Inventor
Nicolas Cormet
Jean-Jacques Garcia
Garry PILLER
Stéphane POTTEAU
Nicolas Vallee
Frédéric WASCAT
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Valeo Systemes Thermiques SAS
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Valeo Systemes Thermiques SAS
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Publication of EP3430339A2 publication Critical patent/EP3430339A2/en
Application granted granted Critical
Publication of EP3430339B1 publication Critical patent/EP3430339B1/en
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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
    • F28D1/053—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
    • F28D1/05316—Assemblies of conduits connected to common headers, e.g. core type radiators
    • F28D1/05325—Assemblies of conduits connected to common headers, e.g. core type radiators with particular pattern of flow, e.g. change of flow direction
    • 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
    • F28D1/05316—Assemblies of conduits connected to common headers, e.g. core type radiators
    • F28D1/05341—Assemblies of conduits connected to common headers, e.g. core type radiators with multiple rows of conduits or with multi-channel conduits combined with a particular flow pattern, e.g. multi-row multi-stage radiators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2225/00—Reinforcing means
    • F28F2225/04—Reinforcing means for 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
    • F28F2265/00—Safety or protection arrangements; Arrangements for preventing malfunction
    • F28F2265/26—Safety or protection arrangements; Arrangements for preventing malfunction for allowing differential expansion between elements

Definitions

  • the present invention relates to a heat exchanger, according to the preamble of claim 1, in particular for a vehicle, more particularly for motor vehicles.
  • the document US2564153 A describes such a heat exchanger.
  • heat exchangers comprising a bundle of tubes arranged between two manifolds.
  • One of the manifolds is divided into two compartments by a transverse partition.
  • Each of the compartments communicates with a first or a second part or pass of the bundle of tubes thus defining a so-called U-shaped circulation.
  • the tubes of the first pass and the tubes of the second pass experience a different expansion generating thermal and mechanical stresses at the level of the tubes, in particular of their ends at the level of the contact with the collector plate. .
  • These constraints are all the more important with regard to the tubes located in the interface zone between the two passes, which can lead to leaks or even a rupture between the ends of the tubes and the collector plate, which is to to avoid.
  • An inactive tube also called a dead tube, is a tube in which no fluid circulates. This solution has the drawback of transferring the thermal shock to the tubes adjacent to the inactive tube and significantly penalizes the thermal performance at the surface of the exchanger.
  • the present invention relates in this sense to a heat exchanger according to the title of claim 1.
  • the present invention thus calls for the use of a reinforcement piece which is located between two tubes near their first end.
  • the thermal stresses occurring in this region of the tube bundle can be reduced by virtue of the presence of this reinforcing part.
  • the presence of the reinforcement piece according to the invention contributes to strengthening, as the name suggests, the mechanical support, but also to absorbing the thermal shocks which may occur in the zone of thermal stress concerned, in this case near the first ends of the tubes.
  • the reinforcement piece according to the present invention can absorb by conduction part of the thermal energy coming from the first tube and then transfer it to the second colder tube.
  • the reinforcement piece proposed according to the invention also has the advantage of being able to be easily integrated into the structure of a heat exchanger, which is particularly advantageous in terms of production costs.
  • the invention relates to a heat exchanger 1, in particular a heat exchanger 1 for a vehicle, allowing a heat exchange between a first fluid and a second fluid.
  • the first fluid is, for example, charge air from an engine, to be cooled.
  • the second fluid is, for example, a flow of ambient air coming from the front face of the vehicle, through the grille.
  • Said exchanger 1 comprises a bundle of tubes 4 in which the first fluid circulates.
  • Each tube 4 comprises a first end opening into a first manifold 14 and a second end, opposite to said first end, opening into a second manifold 15.
  • Each manifold 14, 15 comprises a manifold plate 2 and a cover 20 assembled together with the insertion of a seal, or brazed.
  • Said collector plates are, for example, of substantially rectangular shape.
  • Said tubes 4 can also include spacers or turbulators, not shown, arranged inside said tubes 4, to improve the heat exchange and the resistance to internal pressure of said tubes.
  • Inserts 12 are, for example, arranged between these tubes 12, in particular corrugated inserts. Such spacers 12 make it possible to increase the heat exchange surface between the first fluid circulating in said tubes 4 and the second fluid passing through the exchanger 1 between the tubes 4.
  • Said exchanger 1 further comprises, for example, an inlet flange 16 and / or an outlet flange 17 for the first fluid.
  • Said flanges 16 and 17 can be located on each of the manifolds 14 and 15 or on the same manifold, depending on the circulation, in several passes, of the first fluid in the exchanger 1.
  • a heat exchanger 1 whose circulation, called U-shaped, is in two passes.
  • one of the manifolds 14 is divided into first and second compartments by a transverse partition 21 (see figure 3 ).
  • Each of the compartments communicates respectively with a first part and a second part of the tube bundle 4.
  • said exchanger 1 is configured to allow a circulation in series of a fluid in each of the parts of the tube bundle 4 communicating with the two compartments of said manifold 14.
  • the inlet flange 16 and the outlet flange 17 are located on the manifold 14 with two compartments, as shown in FIG. figure 1 .
  • Said first fluid thus enters via the inlet flange 16 into the first compartment and traverses the first part of the bundle of tubes 4, in the direction of the arrow marked F, this part of the path of the fluid representing the first pass.
  • the fluid is then directed by the second manifold 15, comprising a single compartment, to the second part of the bundle of tubes 4 which it traverses in the direction of the arrow marked F ', this part of the path representing the second pass. It then opens into the second compartment of the manifold 14 to finally leave the exchanger 1 via the outlet flange 17.
  • a U-shaped circulation is thus defined for the first fluid.
  • Said fluid circulating in the heat exchanger has a different temperature in each pass, in particular at the start of the first pass where it has not yet been cooled and at the end of the second pass where it has undergone complete cooling.
  • the tubes 4 of the exchanger 1 are, for example, flat and comprise two large opposite parallel flat planes 18, connected by lateral faces 19, here flat but which can also be rounded.
  • the tubes 4 are of substantially rectangular cross section.
  • the distance b between the lateral edges of the tube 4, that is to say the length of said cross section of the tube is called the long axis of the tube. It corresponds to the width of the tube or depth of the beam.
  • the distance a between the two large faces of the tube 4, that is to say the width of said cross section of the tube is called the small axis of the tube. It corresponds to a height of the tube.
  • the collector plate 2 comprises orifices 3 into which the first ends of the tubes 4 open. Said orifices 3 make it possible to secure the tubes 4 to the collector box 14, 15 and are here ordered in a single row in a direction corresponding to the direction d longitudinal extension of the plate, one parallel to the other. Said openings 3 of the collector plate 2 have a shape corresponding to the section of the first ends of said tubes 4.
  • Said manifold plate 2 further comprises means for fixing the cover 20. It may for example be crimping teeth. Said teeth extend along the perimeter of the collector plate 2. These teeth serve to block the cover on the collector plate during assembly.
  • the heat exchanger 1 as described above further comprises a reinforcement piece 6 located between a first tube 4a and a second tube 4b. Said reinforcement piece 6 is disposed near the first ends 5a, 5b of the two tubes 4a, 4b, outside the corresponding manifold 14.
  • the reinforcement piece 6 comprises two opposite faces 7a, 7b respectively in contact with each of said two tubes 4a, 4b, at one of their large face 18.
  • the reinforcement piece 6 also includes a face 8, preferably in contact with the collecting plate 2.
  • the face 8 of the reinforcing piece 6 which is in contact with the collecting plate 2 can be in the form of a protuberance 11 projecting in the direction of the collecting plate 2.
  • each orifice 3 of the collector plate 2 is provided with collars 9.
  • the protuberance 11 of the reinforcing piece is brazed at the level of the collars 9 formed around the orifices 3 of the collector plate 2 in order to strengthen the retention of the reinforcement piece 6 on the heat exchanger 1 of the present invention.
  • edges of said protuberance 11 match the upper and lower edges of the collars of the tubes 4a, 4b.
  • the reinforcement piece 6 thus supplied can be in contact with both the tubes 4a, 4b and the collars 9 of the corresponding orifices 3 of the collector plate 2.
  • the two opposite faces 7a, 7b of the reinforcement piece 6 according to the invention are brazed on the first and second tubes 4a, 4b and arranged between them.
  • the heat exchanger is configured so that the first tube 4a receives a fluid flowing in a predetermined direction and that the second tube 4b receives the fluid flowing in a direction opposite to that of the first tube 4a. Said tubes 4a, 4b are thus located on either side of the partition 21.
  • the heat exchanger is configured so that the end 5a of the first tube 4a situated at the level of the reinforcement piece 6 is an inlet end of the fluid in the tube 4a and so that the end 5b of the second tube 4b located at the level of the reinforcement piece 6, ie one end of the fluid outlet from the tube 4b.
  • a length of the insert 12 located between the tubes opposite the reinforcement piece 6 is shortened relative to the length of the other inserts located between the tubes.
  • the heat exchanger 1 comprises an identical housing located between each interlayer 12 and the collecting plate 2. Said housing is large enough for the reinforcing piece 6 to be located in this housing, without constraining the interlayer located between the tubes 4a, 4b which can then be the same length as the other spacers.
  • the reinforcing piece 6 has a front face 7a and a back face 7b (not visible), opposite and parallel to said front face 7a.
  • the front 7a and dorsal 7b faces are flat. They are connected to each other by lateral faces 10a, 10b, 10c, 10d (10b and 10d not visible).
  • a first 10c of said lateral faces is provided with said protuberance 11.
  • a second 10d of said lateral faces forms a lower face 10d, opposite to said upper face 10c.
  • the other lateral faces 10a, 10b connect said upper 10c and lower 10d faces.
  • Said faces 7a, 7b, 10a-10d here form a rectangular parallelogram.
  • the distance between said other lateral faces 10a, 10b, indicated d in the figure, preferably corresponds to the long axis of the tubes.
  • the reinforcement piece 6 when it is disposed between two tubes 4a, 4b, it can cover the tubes on their long axis, which is particularly advantageous for ensuring sufficient mechanical support and optimal thermal stress reduction.
  • the reinforcement piece 6 illustrated extends to a distance of between 1 and 5 cm, preferably equal to approximately 3 cm, from the collector plate 2.
  • the distance in question, illustrated h aux figures 2 and 4 is measured from a distal edge of the collars. In other words, it is the distance between the lower face 10d and a base of the protuberance 11 of the reinforcement piece 6 or also the height h of the parallelogram mentioned above.
  • the reinforcing piece 6 is here provided with a support means 13 which can rest on said two tubes 4a, 4b, before the reinforcing piece 6 is brazed on the heat exchanger 1.
  • the piece of reinforcement 6 can be maintained between two tubes 4a, 4b without the risk of slipping between them, which greatly facilitates the handling of the proposed reinforcement piece 6, before brazing the bundle of the exchanger 1.
  • the support means 13 is located on one of the other lateral faces 10a and it is intended to come into abutment against a part of the lateral faces 19 of the tubes 4a, 4b . It then facilitates in particular the flat handling of the exchanger, before brazing.
  • Said tubes 4 could be tubes 4 bent with closure of the tube at one of the side faces 19 of the tube 4. In such a case, it will be advantageous to provide the support means 13 along the opposite side face .
  • the reinforcement piece 6 is made of aluminum, like the rest of the bundle.
  • the heat exchanger according to the present invention is not limited to the aforementioned embodiments.
  • the heat exchanger 1 can comprise a plurality of reinforcing parts 6, in particular on either side of that illustrated.

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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)
  • Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)

Description

La présente invention a pour objet un échangeur de chaleur, selon le préambule de la revendication 1, en particulier pour véhicule, plus particulièrement pour des véhicules automobiles. Le document US2564153 A décrit un tel échangeur de chaleur.The present invention relates to a heat exchanger, according to the preamble of claim 1, in particular for a vehicle, more particularly for motor vehicles. The document US2564153 A describes such a heat exchanger.

Dans ce domaine, il est connu des échangeurs de chaleur comprenant un faisceau de tubes disposé entre deux boîtes collectrices. L'une des boîtes collectrices est divisée en deux compartiments par une cloison transversale. Chacun des compartiments communique avec une première ou une deuxième parties ou passes du faisceau de tubes définissant ainsi une circulation dite en U.In this field, heat exchangers are known comprising a bundle of tubes arranged between two manifolds. One of the manifolds is divided into two compartments by a transverse partition. Each of the compartments communicates with a first or a second part or pass of the bundle of tubes thus defining a so-called U-shaped circulation.

Ces échangeurs connus sont parcourus par un même fluide mais de température différente dans chaque passe.These known exchangers are traversed by the same fluid but of different temperature in each pass.

Dans le cas où les températures sont très différentes, les tubes de la première passe et les tubes de la deuxième passe connaissent une dilatation différente engendrant des contraintes thermiques et mécaniques au niveau des tubes, notamment de leurs extrémités au niveau du contact avec la plaque collectrice. Ces contraintes sont d'autant plus importantes en ce qui concerne les tubes situés dans la zone d'interface entre les deux passes, ce qui peut conduire à des fuites voire une rupture entre les extrémités des tubes et la plaque collectrice, ce qui est à éviter.In the case where the temperatures are very different, the tubes of the first pass and the tubes of the second pass experience a different expansion generating thermal and mechanical stresses at the level of the tubes, in particular of their ends at the level of the contact with the collector plate. . These constraints are all the more important with regard to the tubes located in the interface zone between the two passes, which can lead to leaks or even a rupture between the ends of the tubes and the collector plate, which is to to avoid.

Plusieurs solutions existent pour résoudre ce problème. Il est ainsi connu de renforcer l'extrémité des tubes, notamment en insérant un élément à l'intérieur du tube. Ces méthodes nécessitent par conséquent de nombreux éléments supplémentaires rendant plus complexe la fabrication de tels échangeurs.Several solutions exist to solve this problem. It is thus known to reinforce the end of the tubes, in particular by inserting an element inside the tube. These methods therefore require many additional elements making the manufacture of such exchangers more complex.

Il a également été proposé de séparer les deux parties par un tube inactif formant une barrière thermique. Un tube inactif, appelé aussi tube mort, est un tube dans lequel aucun fluide ne circule. Cette solution a l'inconvénient de reporter le choc thermique sur les tubes adjacents au tube inactif et pénalise significativement la performance thermique à la surface de l'échangeur.It has also been proposed to separate the two parts by an inactive tube forming a thermal barrier. An inactive tube, also called a dead tube, is a tube in which no fluid circulates. This solution has the drawback of transferring the thermal shock to the tubes adjacent to the inactive tube and significantly penalizes the thermal performance at the surface of the exchanger.

Il existe donc un réel besoin de fournir un échangeur de chaleur remédiant aux inconvénients précités, préférentiellement un échangeur dans lequel le choc thermique entre les deux parties du faisceau est réduit.There is therefore a real need to provide a heat exchanger overcoming the aforementioned drawbacks, preferably an exchanger in which the thermal shock between the two parts of the bundle is reduced.

La présente invention se rapporte en ce sens à un échangeur de chaleur suivant l'intitulé de la revendication 1.The present invention relates in this sense to a heat exchanger according to the title of claim 1.

La présente invention fait ainsi appel à l'utilisation d'une pièce de renfort qui est localisée entre deux tubes à proximité de leur première extrémité. De cette façon, les contraintes thermiques survenant dans cette zone du faisceau de tubes peuvent être réduites grâce à la présence de cette pièce de renfort. En effet, la présence de la pièce de renfort selon l'invention contribue à renforcer comme son nom l'indique le maintien mécanique mais également à absorber les chocs thermiques pouvant survenir dans la zone concernée de stress thermique, en l'occurrence à proximité des premières extrémités des tubes.The present invention thus calls for the use of a reinforcement piece which is located between two tubes near their first end. In this way, the thermal stresses occurring in this region of the tube bundle can be reduced by virtue of the presence of this reinforcing part. In fact, the presence of the reinforcement piece according to the invention contributes to strengthening, as the name suggests, the mechanical support, but also to absorbing the thermal shocks which may occur in the zone of thermal stress concerned, in this case near the first ends of the tubes.

Cet avantage est d'autant plus recherché lorsque le fluide s'écoulant dans le premier tube présente une température supérieure à celle du fluide s'écoulant dans le deuxième tube étant donné que les contraintes thermiques sont d'autant plus importantes dans ce cas de figure. En particulier, il s'est avéré que la pièce de renfort selon la présente invention peut absorber par conduction une partie de l'énergie thermique provenant du premier tube pour ensuite la transférer vers le deuxième tube plus froid.This advantage is all the more sought after when the fluid flowing in the first tube has a temperature higher than that of the fluid flowing in the second tube, given that the thermal stresses are all the greater in this case. . In particular, it has been found that the reinforcement piece according to the present invention can absorb by conduction part of the thermal energy coming from the first tube and then transfer it to the second colder tube.

La pièce de renfort proposée selon l'invention présente également l'avantage de pouvoir s'intégrer aisément à la structure d'un échangeur de chaleur, ce qui est particulièrement avantageux e en termes de coûts de revient.The reinforcement piece proposed according to the invention also has the advantage of being able to be easily integrated into the structure of a heat exchanger, which is particularly advantageous in terms of production costs.

Selon différents modes de réalisation de l'invention, qui pourront être pris ensemble ou séparément :

  • ladite pièce de renfort est disposée entre un premier tube et un deuxième tube,
  • ledit échangeur est configuré pour que le premier tube reçoive un fluide circulant dans un sens prédéterminé,
  • ledit échangeur est configuré pour que le deuxième tube reçoive un fluide circulant dans un sens prédéterminé,
  • ledit échangeur est configuré pour que le premier tube reçoive un fluide circulant dans un sens prédéterminé et que le deuxième tube reçoive ledit fluide circulant dans un sens opposé à celui du premier tube,
  • ledit échangeur est configuré pour qu'une extrémité du premier tube située au niveau de ladite pièce de renfort soit une extrémité d'entrée du fluide dans le tube,
  • ledit échangeur est configuré pour qu'une extrémité du deuxième tube située au niveau de ladite pièce de renfort soit une extrémité de sortie du fluide hors du tube,
  • ledit échangeur est agencé pour permettre une circulation en U de fluide,
  • selon l'invention, ladite pièce de renfort comprend deux faces opposées respectivement en contact avec chacun desdits deux tubes,
  • ladite pièce de renfort comprend une face en contact avec ladite plaque collectrice,
  • chaque orifice de ladite plaque collectrice est pourvu de collets,
  • ladite pièce de renfort est en contact avec les collets desdits deux tubes,
  • ladite pièce de renfort est munie d'une face frontale et d'une face dorsale,
  • lesdites faces frontale et dorsale sont reliées l'une à l'autre par des faces latérales,
  • une desdites faces latérales présente une protubérance agencée pour faire face à ladite plaque collectrice,
  • ladite protubérance de ladite pièce de renfort est agencée pour être brasée au niveau des collets disposés autour des orifices de passage des tubes entre lesquels la pièces de renfort est située,
  • les tubes présentent une largeur, correspondant à une profondeur du faisceau, et la pièce de renfort s'étend sensiblement sur la largeur des tubes,
  • ledit faisceau de tubes comprend des intercalaires,
  • lesdits intercalaires sont situés entre les tubes,
  • ledit échangeur comprend un logement situé entre chaque intercalaire et la plaque collectrice,
  • ladite pièce de renfort est située dans ledit logement,
  • une longueur de l'intercalaire situé entre les tubes entre lesquels la pièce de renfort est fixée est écourtée par rapport à la longueur des autres intercalaires situés entre les tubes,
  • les intercalaires situés entre les tubes sont de même longueur,
  • ladite pièce de renfort présente un moyen d'appui apte à reposer sur lesdits deux tubes pour maintenir la pièce de renfort entre lesdits deux tubes, avant brasage du faisceau,
  • ladite pièce de renfort est en aluminium,
  • ledit échangeur comprend une pluralité de pièces de renfort telle qu'indiquée plus haut.
According to different embodiments of the invention, which can be taken together or separately:
  • said reinforcement piece is disposed between a first tube and a second tube,
  • said exchanger is configured so that the first tube receives a fluid flowing in a predetermined direction,
  • said exchanger is configured so that the second tube receives a fluid flowing in a predetermined direction,
  • said exchanger is configured so that the first tube receives a fluid flowing in a predetermined direction and that the second tube receives said fluid flowing in a direction opposite to that of the first tube,
  • said exchanger is configured so that one end of the first tube situated at the level of said reinforcement piece is an inlet end of the fluid in the tube,
  • said exchanger is configured so that one end of the second tube situated at the level of said reinforcement piece is an end for the outlet of the fluid from the tube,
  • said exchanger is arranged to allow a U-shaped circulation of fluid,
  • according to the invention, said reinforcing piece comprises two opposite faces respectively in contact with each of said two tubes,
  • said reinforcing piece comprises a face in contact with said collecting plate,
  • each orifice of said collecting plate is provided with collars,
  • said reinforcement piece is in contact with the collars of said two tubes,
  • said reinforcement piece is provided with a front face and a dorsal face,
  • said front and back faces are connected to each other by side faces,
  • one of said lateral faces has a protuberance arranged to face said collector plate,
  • said protuberance of said reinforcing piece is designed to be brazed at the level of the collars arranged around the orifices for passage of the tubes between which the reinforcing piece is located,
  • the tubes have a width, corresponding to a depth of the beam, and the reinforcement piece extends substantially over the width of the tubes,
  • said bundle of tubes comprises spacers,
  • said spacers are located between the tubes,
  • said exchanger comprises a housing located between each interlayer and the collector plate,
  • said reinforcement piece is located in said housing,
  • a length of the interlayer situated between the tubes between which the reinforcing piece is fixed is shortened relative to the length of the other interleaves situated between the tubes,
  • the spacers located between the tubes are of the same length,
  • said reinforcement piece has a support means capable of resting on said two tubes to hold the reinforcement piece between said two tubes, before brazing the bundle,
  • said reinforcement piece is made of aluminum,
  • said exchanger comprises a plurality of reinforcing parts as indicated above.

La présente invention sera mieux comprise, et d'autres buts, détails, caractéristiques et avantages de celle-ci apparaîtront plus clairement au cours de la description explicative détaillée qui va suivre, d'au moins un mode de réalisation de l'invention donné à titre d'exemple purement illustratif et non limitatif, en référence aux dessins schématiques annexés.The present invention will be better understood, and other objects, details, characteristics and advantages thereof will appear more clearly during the explanatory description. detailed which will follow, of at least one embodiment of the invention given by way of purely illustrative and nonlimiting example, with reference to the appended schematic drawings.

Sur ces dessins :

  • la figure 1 est une vue de face d'un échangeur de chaleur selon l'invention,
  • la figure 2 est vue en section transversale illustrant de façon schématique un tube d'un échangeur de chaleur selon l'invention,
  • la figure 3 est une vue schématique en coupe d'une partie d'un échangeur de chaleur selon l'invention,
  • la figure 4 est une vue en perspective d'une pièce de renfort selon la présente invention.
In these drawings:
  • the figure 1 is a front view of a heat exchanger according to the invention,
  • the figure 2 is seen in cross section schematically illustrating a tube of a heat exchanger according to the invention,
  • the figure 3 is a schematic sectional view of part of a heat exchanger according to the invention,
  • the figure 4 is a perspective view of a reinforcement piece according to the present invention.

Comme illustré à la figure 1, l'invention se rapporte à un échangeur de chaleur 1, en particulier un échangeur de chaleur 1 pour véhicule, permettant un échange de chaleur entre un premier fluide et un second fluide.As illustrated in figure 1 , the invention relates to a heat exchanger 1, in particular a heat exchanger 1 for a vehicle, allowing a heat exchange between a first fluid and a second fluid.

Le premier fluide est, par exemple, de l'air de suralimentation d'un moteur, à refroidir. Le second fluide est, par exemple, un flux d'air ambiant provenant de la face avant du véhicule, à travers la calandre.The first fluid is, for example, charge air from an engine, to be cooled. The second fluid is, for example, a flow of ambient air coming from the front face of the vehicle, through the grille.

Ledit échangeur 1 comprend un faisceau de tubes 4 dans lequel circule le premier fluide. Chaque tube 4 comprend une première extrémité débouchant dans une première boîte collectrice 14 et une deuxième extrémité, opposée à ladite première extrémité, débouchant dans une deuxième boîte collectrice 15.
Chaque boîte collectrice 14, 15 comprend une plaque collectrice 2 et un couvercle 20 assemblés entre eux avec insertion d'un joint d'étanchéité, ou brasés. Lesdites plaques collectrices sont, par exemple, de forme sensiblement rectangulaire.Said exchanger 1 comprises a bundle of tubes 4 in which the first fluid circulates. Each tube 4 comprises a first end opening into a first manifold 14 and a second end, opposite to said first end, opening into a second manifold 15.
Each manifold 14, 15 comprises a manifold plate 2 and a cover 20 assembled together with the insertion of a seal, or brazed. Said collector plates are, for example, of substantially rectangular shape.

Lesdits tubes 4 peuvent également comprendre des intercalaires ou turbulateurs, non représentés, disposés à l'intérieur desdits tubes 4, pour améliorer l'échange thermique et la résistance à la pression interne desdits tubes.Said tubes 4 can also include spacers or turbulators, not shown, arranged inside said tubes 4, to improve the heat exchange and the resistance to internal pressure of said tubes.

Le second fluide circule entre les tubes 4. Des intercalaires 12, sont, par exemple, agencés entre ces tubes 12, notamment des intercalaires ondulés. De tels intercalaires 12 permettent d'augmenter la surface d'échange thermique entre le premier fluide circulant dans lesdits tubes 4 et le second fluide traversant l'échangeur 1 entre les tubes 4.The second fluid circulates between the tubes 4. Inserts 12 are, for example, arranged between these tubes 12, in particular corrugated inserts. Such spacers 12 make it possible to increase the heat exchange surface between the first fluid circulating in said tubes 4 and the second fluid passing through the exchanger 1 between the tubes 4.

Ledit échangeur 1 comprend en outre, par exemple, une bride d'entrée 16 et/ou une bride de sortie 17 pour le premier fluide. Lesdites brides 16 et 17 peuvent être situées sur chacune des boîtes collectrices 14 et 15 ou sur une même boîte collectrice, en fonction de la circulation, en plusieurs passes, du premier fluide dans l'échangeur 1.Said exchanger 1 further comprises, for example, an inlet flange 16 and / or an outlet flange 17 for the first fluid. Said flanges 16 and 17 can be located on each of the manifolds 14 and 15 or on the same manifold, depending on the circulation, in several passes, of the first fluid in the exchanger 1.

Dans la présente invention, il s'agit de préférence d'un échangeur de chaleur 1 dont la circulation, dite en U, est en deux passes. Dans ce type d'échangeur l'une des boîtes collectrices 14 est divisée en un premier et un deuxième compartiments par une cloison transversale 21 (voir figure 3). Chacun des compartiments communique respectivement avec une première partie et une deuxième partie du faisceau de tubes 4. Autrement dit, ledit échangeur 1 est configuré pour permettre une circulation en série d'un fluide dans chacune des parties du faisceau de tubes 4 communiquant avec les deux compartiments de ladite boîte collectrice 14.In the present invention, it is preferably a heat exchanger 1 whose circulation, called U-shaped, is in two passes. In this type of exchanger, one of the manifolds 14 is divided into first and second compartments by a transverse partition 21 (see figure 3 ). Each of the compartments communicates respectively with a first part and a second part of the tube bundle 4. In other words, said exchanger 1 is configured to allow a circulation in series of a fluid in each of the parts of the tube bundle 4 communicating with the two compartments of said manifold 14.

Dans ce type d'échangeur, la bride d'entrée 16 et la bride de sortie 17 sont situées sur la boîte collectrice 14 à double compartiments, comme représenté à la figure 1. Ledit premier fluide entre ainsi par la bride d'entrée 16 dans le premier compartiment et parcoure la première partie du faisceau de tubes 4, selon le sens de la flèche repérée F, cette partie du trajet du fluide représentant la première passe. Le fluide est ensuite dirigé par la seconde boîte collectrice 15, comprenant un seul compartiment, vers la seconde partie du faisceau de tubes 4 qu'il parcoure selon le sens de la flèche repéré F', cette partie du trajet représentant la seconde passe. Il débouche alors dans le deuxième compartiment de la boîte collectrice 14 pour sortir enfin de l'échangeur 1 par la bride de sortie 17. Une circulation en U est ainsi définie pour le premier fluide. Ledit fluide circulant dans l'échangeur de chaleur est de température différente dans chaque passe, en particulier en début de première passe où il n'a pas encore été refroidi et en fin de seconde passe où il a subi un refroidissement complet. Comme illustré à la figure 2, les tubes 4 de l'échangeur 1 sont, par exemple, plats et comprennent deux grandes faces planes parallèles opposées 18, reliées par des faces latérales 19, ici planes mais qui peuvent aussi être arrondies. Autrement dit, les tubes 4 sont de section transversale sensiblement rectangulaire. La distance b entre les bords latéraux du tube 4, c'est-à-dire la longueur de ladite section transversale du tube, est appelée grand axe du tube. Elle correspond à la largueur du tube ou profondeur du faisceau. La distance a entre les deux grandes faces du tube 4, c'est-à-dire la largeur de ladite section transversale du tube, est appelée petit axe du tube. Elle correspond à une hauteur du tube.In this type of exchanger, the inlet flange 16 and the outlet flange 17 are located on the manifold 14 with two compartments, as shown in FIG. figure 1 . Said first fluid thus enters via the inlet flange 16 into the first compartment and traverses the first part of the bundle of tubes 4, in the direction of the arrow marked F, this part of the path of the fluid representing the first pass. The fluid is then directed by the second manifold 15, comprising a single compartment, to the second part of the bundle of tubes 4 which it traverses in the direction of the arrow marked F ', this part of the path representing the second pass. It then opens into the second compartment of the manifold 14 to finally leave the exchanger 1 via the outlet flange 17. A U-shaped circulation is thus defined for the first fluid. Said fluid circulating in the heat exchanger has a different temperature in each pass, in particular at the start of the first pass where it has not yet been cooled and at the end of the second pass where it has undergone complete cooling. As illustrated in figure 2 , the tubes 4 of the exchanger 1 are, for example, flat and comprise two large opposite parallel flat planes 18, connected by lateral faces 19, here flat but which can also be rounded. In other words, the tubes 4 are of substantially rectangular cross section. The distance b between the lateral edges of the tube 4, that is to say the length of said cross section of the tube, is called the long axis of the tube. It corresponds to the width of the tube or depth of the beam. The distance a between the two large faces of the tube 4, that is to say the width of said cross section of the tube, is called the small axis of the tube. It corresponds to a height of the tube.

Comme illustré à la figure 3 la plaque collectrice 2 comprend des orifices 3 dans lesquels débouchent les premières extrémités des tubes 4. Lesdits orifices 3 permettent de solidariser les tubes 4 à la boîte collectrice 14, 15 et sont ici ordonnés en une seule rangée selon une direction correspondant à la direction d'extension longitudinale de la plaque, les uns parallèlement aux autres. Lesdits orifices 3 de la plaque collectrice 2 ont une forme correspondante à la section des premières extrémités desdits tubes 4.As illustrated in figure 3 the collector plate 2 comprises orifices 3 into which the first ends of the tubes 4 open. Said orifices 3 make it possible to secure the tubes 4 to the collector box 14, 15 and are here ordered in a single row in a direction corresponding to the direction d longitudinal extension of the plate, one parallel to the other. Said openings 3 of the collector plate 2 have a shape corresponding to the section of the first ends of said tubes 4.

Ladite plaque collectrice 2 comprend en outre des moyens de fixation du couvercle 20. Il peut s'agir par exemple de dents de sertissage. Lesdites dents s'étendent le long du périmètre de la plaque collectrice 2. Ces dents servent à bloquer le couvercle sur la plaque collectrice lors de l'assemblage.Said manifold plate 2 further comprises means for fixing the cover 20. It may for example be crimping teeth. Said teeth extend along the perimeter of the collector plate 2. These teeth serve to block the cover on the collector plate during assembly.

Selon l'invention, l'échangeur de chaleur 1 tel que décrit ci-avant comprend en outre une pièce de renfort 6 localisée entre un premier tube 4a et un deuxième tube 4b. Ladite pièce de renfort 6 est disposée à proximité des premières extrémités 5a, 5b des deux tubes 4a, 4b, à l'extérieur de la boîte collectrice 14 correspondante.According to the invention, the heat exchanger 1 as described above further comprises a reinforcement piece 6 located between a first tube 4a and a second tube 4b. Said reinforcement piece 6 is disposed near the first ends 5a, 5b of the two tubes 4a, 4b, outside the corresponding manifold 14.

La pièce de renfort 6 comprend deux faces opposées 7a, 7b respectivement en contact avec chacun desdits deux tubes 4a, 4b, au niveau de l'une de leur grande face 18. La pièce de renfort 6 comprend également une face 8, préférentiellement en contact avec la plaque collectrice 2. La face 8 de la pièce de renfort 6 qui est en contact avec la plaque collectrice 2 peut se présenter sous la forme d'une protubérance 11 faisant saillie en direction de la plaque collectrice 2.The reinforcement piece 6 comprises two opposite faces 7a, 7b respectively in contact with each of said two tubes 4a, 4b, at one of their large face 18. The reinforcement piece 6 also includes a face 8, preferably in contact with the collecting plate 2. The face 8 of the reinforcing piece 6 which is in contact with the collecting plate 2 can be in the form of a protuberance 11 projecting in the direction of the collecting plate 2.

Il est ainsi possible d'intégrer la pièce de renfort 6 selon l'invention en brasant les 2 faces opposées 7a, 7b au niveau des premier et deuxième tubes 4a,4b.It is thus possible to integrate the reinforcement piece 6 according to the invention by brazing the 2 opposite faces 7a, 7b at the level of the first and second tubes 4a, 4b.

Pour renforcer encore le maintien de la pièce de renfort 6 entre les tubes 4a, 4b, il est possible de braser la protubérance 11 au niveau de la plaque collectrice 2.To further strengthen the retention of the reinforcement piece 6 between the tubes 4a, 4b, it is possible to braze the protuberance 11 at the level of the collector plate 2.

Selon un mode de réalisation avantageux, chaque orifice 3 de la plaque collectrice 2 est pourvu de collets 9. Préférentiellement, la protubérance 11 de la pièce de renfort est brasée au niveau des collets 9 formés autour des orifices 3 de la plaque collectrice 2 afin de renforcer le maintien de la pièce de renfort 6 sur l'échangeur de chaleur 1 de la présente invention. Ici, des bords de ladite protubérance 11 épousent des bords supérieurs et inférieurs des collets des tubes 4a, 4b.According to an advantageous embodiment, each orifice 3 of the collector plate 2 is provided with collars 9. Preferably, the protuberance 11 of the reinforcing piece is brazed at the level of the collars 9 formed around the orifices 3 of the collector plate 2 in order to strengthen the retention of the reinforcement piece 6 on the heat exchanger 1 of the present invention. Here, edges of said protuberance 11 match the upper and lower edges of the collars of the tubes 4a, 4b.

La pièce de renfort 6 ainsi fournie peut être en contact à la fois avec les tubes 4a, 4b et les collets 9 des orifices 3 correspondant de la plaque collectrice 2.The reinforcement piece 6 thus supplied can be in contact with both the tubes 4a, 4b and the collars 9 of the corresponding orifices 3 of the collector plate 2.

Autrement dit, les deux faces opposées 7a, 7b de la pièce de renfort 6 selon l'invention sont brasées sur le premier et le deuxième tubes 4a, 4b et disposées entre ceux-ci. Cela étant, il n'est pas forcément nécessaire de braser la face 8 à la plaque collectrice 2 de l'échangeur 1.In other words, the two opposite faces 7a, 7b of the reinforcement piece 6 according to the invention are brazed on the first and second tubes 4a, 4b and arranged between them. However, it is not necessarily necessary to braze the face 8 to the collector plate 2 of the exchanger 1.

L'échangeur de chaleur est configuré pour que le premier tube 4a reçoive un fluide circulant dans un sens prédéterminé et que le deuxième tube 4b reçoive le fluide circulant dans un sens opposé à celui du premier tube 4a. Lesdits tubes 4a, 4b sont ainsi situés de part et d'autre de la cloison 21.The heat exchanger is configured so that the first tube 4a receives a fluid flowing in a predetermined direction and that the second tube 4b receives the fluid flowing in a direction opposite to that of the first tube 4a. Said tubes 4a, 4b are thus located on either side of the partition 21.

Plus précisément, l'échangeur de chaleur est configuré pour que l'extrémité 5a du premier tube 4a située au niveau de la pièce de renfort 6 soit une extrémité d'entrée du fluide dans le tube 4a et pour que l'extrémité 5b du deuxième tube 4b située au niveau de la pièce de renfort 6 soit une extrémité de sortie du fluide hors du tube 4b.More specifically, the heat exchanger is configured so that the end 5a of the first tube 4a situated at the level of the reinforcement piece 6 is an inlet end of the fluid in the tube 4a and so that the end 5b of the second tube 4b located at the level of the reinforcement piece 6, ie one end of the fluid outlet from the tube 4b.

Lorsque l'échangeur fonctionne en continu, un choc thermique peut avoir lieu, particulièrement entre les deux tubes 4a, 4b qui présentent un écart de température le plus important au niveau des premières extrémités 5a, 5b des premier et deuxième tubes 4a, 4b.When the exchanger operates continuously, a thermal shock can take place, particularly between the two tubes 4a, 4b which have the greatest temperature difference at the first ends 5a, 5b of the first and second tubes 4a, 4b.

La présence de la pièce de renfort 6 entre les deux tubes 4a, 4b permet ainsi de réduire à la fois les contraintes mécaniques et les contraintes thermiques pouvant survenir.The presence of the reinforcing piece 6 between the two tubes 4a, 4b thus makes it possible to reduce both the mechanical stresses and the thermal stresses that may arise.

Ici, une longueur de l'intercalaire 12 situé entre les tubes en regard de la pièce de renfort 6 est écourtée par rapport à la longueur des autres intercalaires situés entre les tubes.Here, a length of the insert 12 located between the tubes opposite the reinforcement piece 6 is shortened relative to the length of the other inserts located between the tubes.

En variante, l'échangeur de chaleur 1 comprend un logement identique situé entre chaque intercalaire 12 et la plaque collectrice 2. Ledit logement est suffisamment grand pour que la pièce de renfort 6 puisse être située dans ce logement, sans venir contraindre l'intercalaire situé entre les tubes 4a, 4b qui pourra alors être de même longueur que les autres intercalaires.As a variant, the heat exchanger 1 comprises an identical housing located between each interlayer 12 and the collecting plate 2. Said housing is large enough for the reinforcing piece 6 to be located in this housing, without constraining the interlayer located between the tubes 4a, 4b which can then be the same length as the other spacers.

Comme illustré à la figure 4, la pièce de renfort 6 présente une face frontale 7a et une face dorsale 7b (non visible), opposée et parallèle à ladite face frontale 7a. Les faces frontale 7a et dorsale 7b sont planes. Elles sont reliées l'une à l'autre par des faces latérales 10a, 10b, 10c, 10d (10b et 10d non visibles).As illustrated in figure 4 , the reinforcing piece 6 has a front face 7a and a back face 7b (not visible), opposite and parallel to said front face 7a. The front 7a and dorsal 7b faces are flat. They are connected to each other by lateral faces 10a, 10b, 10c, 10d (10b and 10d not visible).

Plus préférentiellement, dans la pièce de renfort 6 illustrée à la figure 4, une première 10c desdites faces latérales, définissant une face supérieure, est munie de ladite protubérance 11. Une seconde 10d desdites faces latérales forme une face inférieure 10d, opposée à ladite face supérieure 10c. Les autres faces latérales 10a,10b relient lesdites faces supérieure 10c et inférieure 10d. Lesdites faces 7a, 7b, 10a-10d forment ici un parallélogramme rectangle.More preferably, in the reinforcement piece 6 illustrated in the figure 4 , a first 10c of said lateral faces, defining an upper face, is provided with said protuberance 11. A second 10d of said lateral faces forms a lower face 10d, opposite to said upper face 10c. The other lateral faces 10a, 10b connect said upper 10c and lower 10d faces. Said faces 7a, 7b, 10a-10d here form a rectangular parallelogram.

La distance entre lesdites autres faces latérales 10a, 10b, indiquée d sur la figure, correspond préférentiellement au grand axe a des tubes. De cette façon, lorsque la pièce de renfort 6 est disposée entre deux tubes 4a, 4b, celle-ci peut recouvrir les tubes sur leur grand axe, ce qui est particulièrement avantageux pour assurer un maintien mécanique suffisant et une réduction de stress thermique optimale.The distance between said other lateral faces 10a, 10b, indicated d in the figure, preferably corresponds to the long axis of the tubes. In this way, when the reinforcement piece 6 is disposed between two tubes 4a, 4b, it can cover the tubes on their long axis, which is particularly advantageous for ensuring sufficient mechanical support and optimal thermal stress reduction.

Avantageusement, la pièce de renfort 6 illustrée s'étend jusqu'à une distance comprise entre 1 et 5 cm, de préférence égale à environ 3 cm, à compter de la plaque collectrice 2. Dans le cas d'une pièce de renfort munie d'une protubérance 11 coopérant avec des collets 9, la distance en cause, illustrée h aux figures 2 et 4, est mesurée depuis un bord distale des collets. Autrement dit, il s'agit de la distance entre la face inférieure 10d et une base de la protubérance 11 de la pièce de renfort 6 ou encore de la hauteur h du parallélogramme mentionné plus haut.Advantageously, the reinforcement piece 6 illustrated extends to a distance of between 1 and 5 cm, preferably equal to approximately 3 cm, from the collector plate 2. In the case of a reinforcement piece provided with 'a protrusion 11 cooperating with collars 9, the distance in question, illustrated h aux figures 2 and 4 , is measured from a distal edge of the collars. In other words, it is the distance between the lower face 10d and a base of the protuberance 11 of the reinforcement piece 6 or also the height h of the parallelogram mentioned above.

La pièce de renfort 6 est ici munie d'un moyen d'appui 13 qui peut reposer sur lesdits deux tubes 4a,4b, avant que la pièce de renfort 6 ne soit brasée sur l'échangeur de chaleur 1. Ainsi, la pièce de renfort 6 peut être maintenue entre deux tubes 4a, 4b sans risquer de glisser entre ceux-ci, ce qui facilite grandement la manipulation de la pièce de renfort 6 proposée, avant brasage du faisceau de l'échangeur 1.The reinforcing piece 6 is here provided with a support means 13 which can rest on said two tubes 4a, 4b, before the reinforcing piece 6 is brazed on the heat exchanger 1. Thus, the piece of reinforcement 6 can be maintained between two tubes 4a, 4b without the risk of slipping between them, which greatly facilitates the handling of the proposed reinforcement piece 6, before brazing the bundle of the exchanger 1.

Selon un mode préféré de l'échangeur selon la présente invention, le moyen d'appui 13 est localisé sur l'une des autres faces latérale 10a et elle est destinée à venir en appui contre une partie des faces latérales 19 des tubes 4a, 4b. Elle facilite alors en particulier la manipulation à plat de l'échangeur, avant brasage.According to a preferred embodiment of the exchanger according to the present invention, the support means 13 is located on one of the other lateral faces 10a and it is intended to come into abutment against a part of the lateral faces 19 of the tubes 4a, 4b . It then facilitates in particular the flat handling of the exchanger, before brazing.

Lesdits tubes 4 pourront être des tubes 4 pliés avec fermeture du tube au niveau de l'une des faces latérales 19 du tube 4. Dans un tel cas, il sera avantageux de prévoir le moyen d'appui 13 le long de la face latérale opposée.Said tubes 4 could be tubes 4 bent with closure of the tube at one of the side faces 19 of the tube 4. In such a case, it will be advantageous to provide the support means 13 along the opposite side face .

Selon un mode avantageux, la pièce de renfort 6 est en aluminium, comme le reste du faisceau.According to an advantageous embodiment, the reinforcement piece 6 is made of aluminum, like the rest of the bundle.

L'échangeur de chaleur selon la présente invention ne se limite pas aux modes de réalisation précités.The heat exchanger according to the present invention is not limited to the aforementioned embodiments.

A titre d'exemple, l'échangeur de chaleur 1 peut comprendre une pluralité de pièces de renfort 6, notamment de part et d'autre de celle illustrée.By way of example, the heat exchanger 1 can comprise a plurality of reinforcing parts 6, in particular on either side of that illustrated.

Claims (14)

  1. Heat exchanger (1) comprising:
    - a collector plate (2) having a wall provided with orifices (3)
    - a bundle of tubes (4) in which each tube (4) has a first end (5) designed to be housed in the corresponding orifice (3) of said collector plate (2),
    - a reinforcing part (6) disposed between two tubes (4a, 4b) close to the first end (5a, 5b) thereof,
    characterized in that said reinforcing part (6) comprises two opposite faces (7a, 7b) respectively in contact with each of said two tubes (4a, 4b).
  2. Heat exchanger (1) according to Claim 1, wherein said reinforcing part (6) is disposed between a first tube (4a) and a second tube (4b), said heat exchanger (1) being configured such that the first tube (4a) receives a fluid flowing in a predetermined direction and such that the second tube (4b) receives said fluid flowing in an opposite direction to that of the first tube (4a).
  3. Heat exchanger (1) according to Claim 2, said heat exchanger (1) being configured such that an end (5a) of the first tube (4a) that is situated by said reinforcing part (6) is an inlet end for the fluid to enter the tube (4a) and such that an end (5b) of the second tube (4b) that is situated by said reinforcing part (6) is an outlet end for the fluid to exit the tube (4b).
  4. Heat exchanger (1) according to any one of the preceding claims, wherein the heat exchanger (1) is designed to allow fluid to flow in a U shape.
  5. Heat exchanger (1) according to any one of the preceding claims, wherein said reinforcing part (6) comprises a face (8) in contact with said collector plate (2).
  6. Heat exchanger (1) according to any one of the preceding claims, wherein each orifice (3) in said collector plate (2) is provided with flanges (9).
  7. Heat exchanger (1) according to Claim 6, wherein said reinforcing part (6) is in contact with the flanges (9) of said two tubes (4a, 4b).
  8. Heat exchanger (1) according to Claim 6 or Claim 7, wherein said reinforcing part (6) is provided with a frontal face (7a) and a dorsal face (7b), said frontal face (7a) and dorsal face (7b) being connected together by lateral faces (10a-10d), one (10c) of said lateral faces having a protuberance (11) designed to face said collector plate (2).
  9. Heat exchanger (1) according to Claim 8, wherein said protuberance (11) of said reinforcing part (6) is designed to be brazed at said flanges (9).
  10. Heat exchanger (1) according to any one of the preceding claims, wherein the tubes have a width corresponding to a depth of the bundle and the reinforcing part (6) extends across the width of the tubes.
  11. Heat exchanger according to any one of the claims, wherein said bundle of tubes (4) comprises inserts (12) situated between the tubes (4), a length of the insert (12) situated between the tubes (4a, 4b) between which the reinforcing part (6) is secured being shortened compared with the length of the other inserts (12) situated between the tubes.
  12. Heat exchanger (1) according to one of Claims 1 to 10, wherein said bundle of tubes (4) comprises inserts (12) situated between the tubes (4), said inserts (12) being the same length.
  13. Heat exchanger (1) according to one of the preceding claims, wherein said reinforcing part (6) has a contact means (13) that is able to rest on said two tubes (4a, 4b) in order to keep the reinforcing part (6) between said two tubes (4a, 4b) before the bundle is brazed.
  14. Heat exchanger (1) according to any one of the preceding claims, comprising a plurality of reinforcing parts (6).
EP17716945.5A 2016-03-18 2017-03-16 Heat exchanger, in particular for a vehicle, specifically a motor vehicle Active EP3430339B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1652307A FR3049049B1 (en) 2016-03-18 2016-03-18 HEAT EXCHANGER, ESPECIALLY FOR A VEHICLE, PARTICULARLY FOR MOTOR VEHICLES
PCT/FR2017/050604 WO2017158299A2 (en) 2016-03-18 2017-03-16 Heat exchanger, in particular for a vehicle, specifically a motor vehicle

Publications (2)

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EP3430339A2 EP3430339A2 (en) 2019-01-23
EP3430339B1 true EP3430339B1 (en) 2020-01-29

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EP17716945.5A Active EP3430339B1 (en) 2016-03-18 2017-03-16 Heat exchanger, in particular for a vehicle, specifically a motor vehicle

Country Status (3)

Country Link
EP (1) EP3430339B1 (en)
FR (1) FR3049049B1 (en)
WO (1) WO2017158299A2 (en)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2564153A (en) * 1946-08-13 1951-08-14 Garrett Corp Shielded heat exchanger
JPS6122192A (en) * 1984-07-06 1986-01-30 Ngk Insulators Ltd Heat exchanger
US8656988B1 (en) * 2010-03-03 2014-02-25 Adams Thermal Systems, Inc. External reinforcement of connections between header tanks and tubes in heat exchangers

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
WO2017158299A2 (en) 2017-09-21
EP3430339A2 (en) 2019-01-23
WO2017158299A3 (en) 2017-11-16
FR3049049A1 (en) 2017-09-22
FR3049049B1 (en) 2019-04-19

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