WO2008107031A1 - Multi-circuit heat exchanger - Google Patents

Multi-circuit heat exchanger Download PDF

Info

Publication number
WO2008107031A1
WO2008107031A1 PCT/EP2007/063740 EP2007063740W WO2008107031A1 WO 2008107031 A1 WO2008107031 A1 WO 2008107031A1 EP 2007063740 W EP2007063740 W EP 2007063740W WO 2008107031 A1 WO2008107031 A1 WO 2008107031A1
Authority
WO
WIPO (PCT)
Prior art keywords
tubes
fluid
circuits
exchanger according
connecting element
Prior art date
Application number
PCT/EP2007/063740
Other languages
French (fr)
Other versions
WO2008107031A8 (en
Inventor
Christian Riondet
Jean-Michel Haincourt
Jean-Marc Lesueur
Original Assignee
Valeo Systemes Thermiques
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 Systemes Thermiques filed Critical Valeo Systemes Thermiques
Priority to US12/525,934 priority Critical patent/US20110030935A1/en
Priority to EP07848063A priority patent/EP2115374A1/en
Priority to JP2009547553A priority patent/JP2010518344A/en
Publication of WO2008107031A1 publication Critical patent/WO2008107031A1/en
Publication of WO2008107031A8 publication Critical patent/WO2008107031A8/en

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
    • F28D1/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
    • F28D1/04—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits
    • F28D1/0408—Multi-circuit heat exchangers, e.g. integrating different heat exchange sections in the same unit or heat exchangers for more than two fluids
    • F28D1/0426—Multi-circuit heat exchangers, e.g. integrating different heat exchange sections in the same unit or heat exchangers for more than two fluids with units having particular arrangement relative to the large body of fluid, e.g. with interleaved units or with adjacent heat exchange units in common air flow or with units extending at an angle to each other or with units arranged around a central element
    • F28D1/0443—Combination of units extending one beside or one above the other
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • 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
    • 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
    • F28F2009/0285—Other particular headers or end plates
    • F28F2009/0287—Other particular headers or end plates having passages for different heat exchange media
    • 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
    • F28F2225/08—Reinforcing means for header boxes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2270/00—Thermal insulation; Thermal decoupling
    • F28F2270/02—Thermal insulation; Thermal decoupling by using blind conduits

Definitions

  • the present invention relates to a multi-circuit exchanger.
  • an exchanger comprising at least two independent or partially independent circuits within which circulates at least two different fluids or not to be cooled by a flow of outside air.
  • the exchangers comprise a series of thin cylindrical tubes of light alloy, often of flattened shape opening into two collectors. The tightness between these tubes and the collector being ensured by interposition of elastic joints or brazing. Thin light alloy strips folded accordion-shaped are interposed between the tubes to increase the contact surface between the exchanger and the ambient air flowing between the tubes; these strips are conventionally called interleaves.
  • the multi-circuit exchangers comprise a partition wall in the two collectors so as to separate the two circuits.
  • structural elements close to this partition mainly thin tubes
  • the thinnest structures such as tubes are the most likely to break and leak. This state of affairs is accentuated in the case of brazed light alloy tubes insofar as the heat treatments necessary for brazing make the light alloy less stiff and more vulnerable to the creation of cracks resulting from thermal stresses, especially with regard to bending or tensile stresses.
  • a series of tubes for the circulation of fluid of one or other of the two circuits, at least two collectors, each connected to the opposite ends of the tubes, said tubes opening respectively into said collectors,
  • a partition provided in each of said collectors defining at least one separation in order to isolate the first circuit of the second fluid circuit; a mechanical connection means connecting the structure of the intake chamber to the collection chamber is intended to reduce significantly the structural mechanical stresses existing at the level of the separation between the two circuits.
  • this exchanger is characterized in that the mechanical means consists of a total or partial closure of at least one tube located adjacent to the partitions.
  • the multi-circuit exchanger may present the elements and / or the additional characteristics described hereafter, taken singly or in combination:
  • the mechanical connection element consists of a spacer.
  • the spacer, or mechanical means, is in the immediate vicinity of a fluid circulation tube closest to the separation.
  • the mechanical connecting element mechanically connecting the two collectors is placed between two adjacent tubes of the two circuits.
  • the mechanical connecting element or spacer mechanically connecting the two collectors is disposed in a region of the exchanger in which the temperature and therefore the expansion is at an intermediate level between those of the two circuits.
  • the mechanical connecting element mechanically connecting the two collectors is composed of at least two bars or solid or hollow spacers disposed on each side of the partition wall between the distribution chambers.
  • the mechanical connecting element or spacer consists of an extension of the partition walls of said chambers.
  • the mechanical connecting element or spacer is constituted by a tube identical to the other heat exchange tubes but where does not circulate fluid.
  • the mechanical connection element or spacer is constituted by at least one heat exchange tube identical to the other heat exchange tubes but having a restricted fluid inlet and / or outlet orifice in order to limit the flow of fluid .
  • the mechanical connecting element or spacer is constituted by at least one heat exchange tube identical to the other heat exchange tubes but having a greater wall thickness at least in an area near the inlet port and / or fluid outlet in order to limit the flow of fluid and mechanically reinforce at least locally the connecting element.
  • the mechanical connecting element or spacer is constituted by several tubes identical to the other heat exchange tubes but where no fluid circulates, these tubes being disposed on either side of the partition wall of the two circuits.
  • the exchanger is completely assembled mechanically by crimping without soldering.
  • the partition separating the two circuits has a small hole allowing the fluid to circulate from one circuit to another.
  • the multi-circuit heat exchanger is mainly composed of aluminum alloy and assembled by brazing.
  • the multi-circuit heat exchanger may comprise boxes made by injection of plastic materials, these boxes being assembled to the collectors by crimping.
  • Figure 1 is a schematic cross section of a multi-circuit exchanger with two independent circuits according to the prior art.
  • FIG. 2 schematically shows an exemplary embodiment of a heat exchanger with two independent circuits according to the invention.
  • FIGS 3 to 8 are alternative embodiments of an exchanger with two independent circuits according to the invention also in schematic cross section.
  • FIG. 1 shows an exchanger 1 with two independent circuits as conventionally produced according to the prior art. It comprises a first circuit A inside which circulates a first fluid and a circuit B within which a second fluid circulates.
  • This exchanger comprises two collectors C1 and C2 responsible for collecting the fluid. These collectors are each separated in two parts by a wall P1 and P2.
  • a set of tubes (here numbering 7) t1 to t7 connect the two collectors.
  • Each circuit includes an entrance and an exit.
  • the fluid of the circuit A enters the circuit via the inlet Ea and leaves the outlet Sa after having circulated in the tubes t1, t2, t3 and t4.
  • the fluid of the circuit B enters the circuit through the entry Eb and leaves the outlet Sb after having circulated in the tubes X5, t6, and t7.
  • the tubes t1 to t4 are hotter than the tubes t5 to t7.
  • the tubes t1 to t5 tend to expand more than the tubes t5 to t7. This results in compressive and flexural stresses in the tubes t1 to t4 and tensile and flexural stresses in the tubes t5 h X1. Given the very hyperstatic aspect of the tube / collector mechanical fastener, it is the t5 tube and the structure close to the end of this tube t5 that is most likely to develop a crack due to alternating stress fatigue in tension / flexion.
  • the heat exchanger mainly comprises
  • a second collector C2 which is also separated into two independent parts by a wall P2, three tubes t1, t2, and t3 which sealingly connect the collector C1 to the collector C2 and which allow the first fluid of the circuit A to flow from an input Ea to an output Sa,
  • the mechanical connection S consists of a light alloy tube t4.
  • this type of tube is similar to the tubes used for the circulation of fluid.
  • the tube t4 used as additional structure it does not circulate fluid.
  • one or two plugs 3 closes one or both ends of the tube t4.
  • the still t4 tube is not supplied by a fluid is at an intermediate temperature which reduces somewhat the constraints due to temperature differences between the two circuits.
  • the mechanical connection S consists of two tubes t3 and t4 made of light alloy. These two tubes are closed at one or two of their ends and therefore as in the previous example are not traversed by the fluids. Again the tubes t3 and t4 are not supplied by a fluid are at an intermediate temperature which reduces somewhat the constraints due to temperature differences between the two circuits.
  • the mechanical connection S consists of two tubes t4 and t5 made of light alloy. These two tubes are closed at one or two of their ends and therefore as in the previous example are not traversed by the fluids. Again the tubes t4 and t5 not being supplied by a fluid are at an intermediate temperature which reduces somewhat the constraints due to temperature differences between the two circuits.
  • the mechanical connection S consists of four tubes t3, t4, t5 and t6-light alloy. These four tubes are closed at one or two of their ends and therefore as in the previous example are not traversed by the fluids. Again the tubes t4, t5, t6, and t7 not being supplied by a fluid are at an intermediate temperature which reduces somewhat the constraints due to temperature differences between the two circuits.
  • the mechanical connection S consists of a light alloy tube t4. This tube is partially closed and is traversed by the fluid but with a lower flow. The influence of such a tube on the structural constraints is therefore lower than if it were a completely closed tube but still allows to reduce somewhat the constraints due to temperature differences between the two circuits .
  • the mechanical connection S consists of two tubes t3 and t4 made of light alloy. These tubes are partially blocked and are traversed by the fluid but with a lower flow rate. The influence of such tubes on the structural stresses is therefore lower than if they were tubes completely closed but still allows to reduce somewhat the constraints due to temperature differences between the two circuits.
  • the mechanical connection S consists of three tubes t3, t4 and t5 made of light alloy. These tubes are partially blocked and are traversed by the fluid but with a lower flow rate. The influence of such tubes on the structural stresses is therefore lower than if it were completely closed tubes but still allows to reduce somewhat the constraints due to temperature differences between the two circuits.
  • the mechanical connection S consists of a metal plate P, in this case a light alloy, which passes right through the exchanger 1.
  • This plate P is brazed around the perimeter of each manifold to ensure sealing between the two circuits, and therefore constitutes a rigid link between the two collectors.
  • This plate P is at an intermediate temperature which reduces the constraints due to temperature differences between the two circuits.
  • This plate may advantageously be replaced by a hollow plate (FIG. 10).

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)
  • Details Of Heat-Exchange And Heat-Transfer (AREA)

Abstract

The present invention relates to a heat exchanger (1) comprising at least two circuits (A, B), this exchanger (1) comprising: a series of tubes (t1 to t7) for circulating a fluid of one or other of the two circuits (A, B), - at least two manifolds (Cl, C2) each connected to the opposite ends of the tubes, said tubes opening respectively into said manifolds, - a partition (P1) provided in each of said manifolds to define at least one boundary so as to isolate the first fluid circuit from the second fluid circuit, - a means of mechanical connection (5) connecting the structure of the inlet chamber to the collection chamber and intended significantly to reduce the structural mechanical stresses at the boundary between the two circuits, characterized in that the mechanical means (5) consists of a full (3) or partial closing off of at least one tube (t4) situated adjacent to the partitions.

Description

Titre : Echangeur multi circuits Title: Multi-circuit exchanger
La présente invention concerne un echangeur multi circuits.The present invention relates to a multi-circuit exchanger.
Elle a plus particulièrement comme objet, mais non exclusivement, un echangeur comprenant au moins deux circuits indépendants ou partiellement indépendants à l'intérieur desquels circulent au moins deux fluides différents ou non devant être refroidis par une circulation d'air extérieur.It has more particularly as object, but not exclusively, an exchanger comprising at least two independent or partially independent circuits within which circulates at least two different fluids or not to be cooled by a flow of outside air.
Elle s'applique notamment aux échangeurs multi circuits utilisés dans l'industrie automobile pour refroidir deux éléments qui ont des besoins en refroidissement différents comme le moteur thermique et la boite de vitesse par exemple.It applies in particular to multi-circuit heat exchangers used in the automotive industry to cool two elements that have different cooling needs such as the engine and the gearbox, for example.
Elle convient particulièrement bien aux échangeurs multi circuits utilisés dans le cas d'un moteur hybride pour refroidir le moteur électrique d'une part et d'autre part le moteur thermique.It is particularly suitable for multi-circuit exchangers used in the case of a hybrid engine to cool the electric motor on the one hand and the engine on the other hand.
Pour des raisons de coût de fabrication et pour faciliter l'intégration dans le véhicule, il est préférable de réaliser les fonctions de refroidissement des deux fluides dans un echangeur multi circuits plutôt que dans deux échangeurs séparés. Par contre il est impératif d'isoler thermiquement le plus possible les deux circuits en supprimant le plus possible les contraintes thermiques dues aux différences de température entre les deux circuits. En effet les fluides circulant dans les deux circuits séparés n'ont pas nécessairement les mêmes besoins en énergie de refroidissement et n'ont pas non plus nécessairement les mêmes températures d'entrée et de sortie. Afin d'optimiser le fonctionnement et la longévité de l'échangeur, il est donc important de minimiser les contraintes thermiques.For reasons of manufacturing cost and to facilitate integration into the vehicle, it is preferable to perform the cooling functions of the two fluids in a multi-circuit exchanger rather than in two separate exchangers. On the other hand, it is imperative to thermally isolate the two circuits as much as possible by eliminating as much as possible the thermal stresses due to the temperature differences between the two circuits. Indeed the fluids flowing in the two separate circuits do not necessarily have the same cooling energy needs and do not have not necessarily the same input and output temperatures. In order to optimize the operation and longevity of the exchanger, it is therefore important to minimize the thermal stresses.
Classiquement les échangeurs comprennent une série de tubes cylindriques minces en alliage légers, souvent de forme aplatie débouchant dans deux collecteurs. L'étanchéité entre ces tubes et le collecteur étant assurée par interposition de joints élastiques ou par brasage. Des feuillards d'alliage léger très minces plies en forme d'accordéon sont intercalés entre les tubes pour augmenter la surface de contact entre l'échangeur et l'air ambiant circulant entre les tubes ; ces feuillards étant classiquement dénommés des intercalaires.Classically the exchangers comprise a series of thin cylindrical tubes of light alloy, often of flattened shape opening into two collectors. The tightness between these tubes and the collector being ensured by interposition of elastic joints or brazing. Thin light alloy strips folded accordion-shaped are interposed between the tubes to increase the contact surface between the exchanger and the ambient air flowing between the tubes; these strips are conventionally called interleaves.
Classiquement les échangeurs multi circuits comprennent une cloison de séparation dans les deux collecteurs de façon à séparer les deux circuits. Malheureusement les éléments de structure proches de cette cloison (principalement les tubes minces) ne résistent aux contraintes mécaniques (notamment en fatigue) dues à la différence de température (notamment en raison des cycles de différence de température) existant entre les deux circuits. Les structures les plus minces comme les tubes sont les plus susceptibles de se rompre et de générer des fuites. Cet état de fait est accentué dans le cas de tubes en alliage léger brasés dans la mesure où les traitements thermiques nécessaires au brasage rendent l'alliage léger moins raide et plus vulnérable à la création de criques provenant de contraintes thermiques surtout pour ce qui concerne les contraintes de flexion ou de traction. Pour tenter de supprimer ces inconvénients on a proposé d'augmenter la section de la cloison ou même de la doubler mais le problème subsiste car les dilations différentielles entre les tubes chauds et ceux relativement plus froids existent toujours et créent des contraintes internes de fatigue trop importantes. D'autre part il est à remarquer que les contraintes thermiques au niveau de la frontière entre les deux circuits sont importantes lorsque le gradient thermique existant à cet endroit entre les deux circuits est grand.Conventionally, the multi-circuit exchangers comprise a partition wall in the two collectors so as to separate the two circuits. Unfortunately structural elements close to this partition (mainly thin tubes) do not withstand mechanical stresses (especially fatigue) due to the difference in temperature (especially because of temperature difference cycles) existing between the two circuits. The thinnest structures such as tubes are the most likely to break and leak. This state of affairs is accentuated in the case of brazed light alloy tubes insofar as the heat treatments necessary for brazing make the light alloy less stiff and more vulnerable to the creation of cracks resulting from thermal stresses, especially with regard to bending or tensile stresses. In an attempt to eliminate these disadvantages it has been proposed to increase the section of the partition or even to double it, but the problem remains because the differential dilations between the hot tubes and those relatively colder still exist and create excessive internal fatigue stresses. . On the other hand it should be noted that the thermal stresses at the boundary between the two circuits are important when the thermal gradient existing at this point between the two circuits is large.
Afin de remédier à ces inconvénients majeurs, l'invention s'écarte des architectures précédemment évoquées et propose un échangeur comportant au moins deux circuits, cet échangeur comprenant :In order to remedy these major drawbacks, the invention deviates from the previously mentioned architectures and proposes an exchanger comprising at least two circuits, this exchanger comprising:
- une série de tubes pour la circulation de fluide de l'un ou l'autre des deux circuits, - au moins deux collecteurs, chacun reliés aux extrémités opposées des tubes, lesdits tubes débouchant respectivement dans lesdits collecteurs,a series of tubes for the circulation of fluid of one or other of the two circuits, at least two collectors, each connected to the opposite ends of the tubes, said tubes opening respectively into said collectors,
- une cloison prévue dans chacun desdits collecteurs définissant au moins une séparation afin d'isoler le premier circuit du second circuit de fluide, - un moyen de liaison mécanique reliant la structure de la chambre d'admission à la chambre de collecte est destiné à réduire de façon significative les contraintes mécaniques structurales existant au niveau de la séparation entre les deux circuits.a partition provided in each of said collectors defining at least one separation in order to isolate the first circuit of the second fluid circuit; a mechanical connection means connecting the structure of the intake chamber to the collection chamber is intended to reduce significantly the structural mechanical stresses existing at the level of the separation between the two circuits.
Selon l'invention cet échangeur est caractérisé en ce que le moyen mécanique consiste en une obturation totale ou partielle d'au moins un tube situé contigu aux cloisons.According to the invention this exchanger is characterized in that the mechanical means consists of a total or partial closure of at least one tube located adjacent to the partitions.
Les susdites contraintes mécaniques proviennent des dilatations différentielles des tubes d'échange thermique engendrées par des écarts de températures entre les deux circuits. Le terme « séparation » s'entend d'une ligne fictive reliant les deux cloisons présentes respectivement dans chacun des collecteurs et marquant la frontière ou limite entre chacun des deux circuits. De façon classique, cette séparation consiste en une droite ou un plan s 'étendant dans le plan d'extension ou dans l'axe des tubes et/ou des cloisons. Dans des modes de réalisation non limitatifs, l' échangeur multi circuits selon l'invention pourra présenter les éléments et/ou les caractéristiques supplémentaires décrits ci-après pris isolément ou en combinaison :The above mechanical stresses result from the differential expansions of the heat exchange tubes generated by temperature differences between the two circuits. The term "separation" means a fictitious line connecting the two partitions present respectively in each of the collectors and marking the boundary or boundary between each of the two circuits. In a conventional manner, this separation consists of a straight line or a plane extending in the plane of extension or in the axis of the tubes and / or partitions. In non-limiting embodiments, the multi-circuit exchanger according to the invention may present the elements and / or the additional characteristics described hereafter, taken singly or in combination:
- l'élément de liaison mécanique consiste en une entretoise. - l'entretoise, ou moyen mécanique, se trouve à proximité immédiate d'un tube de circulation de fluide le plus proche de la séparation.the mechanical connection element consists of a spacer. - The spacer, or mechanical means, is in the immediate vicinity of a fluid circulation tube closest to the separation.
- l'élément de liaison mécanique reliant mécaniquement les deux collecteurs est placé entre deux tubes adjacents des deux circuits. l'élément de liaison mécanique ou entretoise reliant mécaniquement les deux collecteurs est disposé dans une région de l'échangeur dans laquelle la température et donc la dilatation est à un niveau intermédiaire entre celles des deux circuits.- The mechanical connecting element mechanically connecting the two collectors is placed between two adjacent tubes of the two circuits. the mechanical connecting element or spacer mechanically connecting the two collectors is disposed in a region of the exchanger in which the temperature and therefore the expansion is at an intermediate level between those of the two circuits.
- l'élément de liaison mécanique reliant mécaniquement les deux collecteurs est composé d'au moins deux barres ou entretoises pleines ou creuses disposées de chaque coté de la cloison de séparation existant entre les chambres de distributions.- The mechanical connecting element mechanically connecting the two collectors is composed of at least two bars or solid or hollow spacers disposed on each side of the partition wall between the distribution chambers.
- l'élément de liaison mécanique ou entretoise consiste en un prolongement des cloisons de séparation desdites chambres.- The mechanical connecting element or spacer consists of an extension of the partition walls of said chambers.
- l'élément de liaison mécanique ou entretoise est constitué par un tube identique aux autres tubes d'échange thermique mais où ne circule pas de fluide.- The mechanical connecting element or spacer is constituted by a tube identical to the other heat exchange tubes but where does not circulate fluid.
- l'élément de liaison mécanique ou entretoise est constitué par au moins un tube d'échange thermique identique aux autres tubes d'échange thermique mais ayant un orifice d'entrée et/ou de sortie de fluide restreint afin de limiter le débit de fluide.the mechanical connection element or spacer is constituted by at least one heat exchange tube identical to the other heat exchange tubes but having a restricted fluid inlet and / or outlet orifice in order to limit the flow of fluid .
- l'élément de liaison mécanique ou entretoise est constitué par au moins un tube d'échange thermique identique aux autres tubes d'échange thermique mais ayant une épaisseur de paroi plus importante au moins dans une zone située près de l'orifice d'entrée et/ou de sortie de fluide afin de limiter le débit de fluide et de renforcer mécaniquement au moins localement l'élément de liaison. - l'élément de liaison mécanique ou entretoise est constitué par plusieurs tubes identiques aux autres tubes d'échange thermique mais où ne circule pas de fluide, ces tubes étant disposés de part et d'autre de la paroi de séparation des deux circuits. - l'échangeur est complètement assemblé mécaniquement par sertissage sans brasage.- The mechanical connecting element or spacer is constituted by at least one heat exchange tube identical to the other heat exchange tubes but having a greater wall thickness at least in an area near the inlet port and / or fluid outlet in order to limit the flow of fluid and mechanically reinforce at least locally the connecting element. - The mechanical connecting element or spacer is constituted by several tubes identical to the other heat exchange tubes but where no fluid circulates, these tubes being disposed on either side of the partition wall of the two circuits. - The exchanger is completely assembled mechanically by crimping without soldering.
- la cloison de séparation séparant les deux circuits, comporte un petit orifice laissant circuler le fluide d'un circuit à l'autre.- The partition separating the two circuits, has a small hole allowing the fluid to circulate from one circuit to another.
- l'échangeur multi circuits est constitué principalement en alliage d'aluminium et assemblé par brasage.- The multi-circuit heat exchanger is mainly composed of aluminum alloy and assembled by brazing.
- l'échangeur multi circuits pourra comprendre des boîtes réalisées par injection de matériaux plastiques, ces boîtes étant assemblées aux collecteurs par sertissage.the multi-circuit heat exchanger may comprise boxes made by injection of plastic materials, these boxes being assembled to the collectors by crimping.
Des modes de réalisation de l'invention seront décrits ci-après à titre d'exemple non limitatif, en faisant référence aux dessins annexés dans lesquels:Embodiments of the invention will be described hereinafter by way of non-limiting example, with reference to the accompanying drawings in which:
La figure 1 est une coupe transversale schématique d'un échangeur multi circuits à deux circuits indépendants suivant l'art antérieur.Figure 1 is a schematic cross section of a multi-circuit exchanger with two independent circuits according to the prior art.
La figure 2 montre schématiquement un exemple de réalisation d'un échangeur à deux circuits indépendants selon l'invention.FIG. 2 schematically shows an exemplary embodiment of a heat exchanger with two independent circuits according to the invention.
Les figures 3 à 8 sont des variantes d'exécution d'un échangeur à deux circuits indépendants selon l'invention également en coupe transversale schématique.Figures 3 to 8 are alternative embodiments of an exchanger with two independent circuits according to the invention also in schematic cross section.
Dans la suite, on utilisera l'expression « moyen mécanique » pour définir de façon générale l'objet de l'invention. Néanmoins, il est clair que cette expression pourra se traduire également par le terme « entretoise », en particulier pour marquer le fait que ce moyen mécanique relie des deux boîtes collectrices. La figure 1 présente un échangeur 1 à deux circuits indépendants tel qu'il est classiquement réalisé selon l'art antérieur. Il comprend un premier circuit A à l'intérieur duquel circule un premier fluide et un circuit B à l'intérieur duquel circule un deuxième fluide. Cet échangeur comprend deux collecteurs Cl et C2 chargés de collecter le fluide. Ces collecteurs sont séparés chacun en deux parties par une paroi Pl et P2. Un ensemble de tubes (ici au nombre de 7) tl à t7 relient les deux collecteurs. Des feuillards fins en alliage d'aluminium plies en forme d'accordéon sont intercalés entre les tubes pour augmenter la surface de contact entre les tubes et l'air ambiant. Chaque circuit comprend une entrée et une sortie. Le fluide du circuit A pénètre dans le circuit par l'entrée Ea et ressort par la sortie Sa après avoir circulé dans les tubes tl, t2, t3 et t4. Le fluide du circuit B pénètre dans le circuit par l'entrée Eb et ressort par la sortie Sb après avoir circulé dans les tubes X5, t6, et t7. Dans le cas où la température moyenne du premier fluide dans le circuit A est supérieure à la température moyenne du deuxième fluide du circuit B alors les tubes tl à t4 sont plus chauds que les tubes t5 à t7. Dans ce cas les tubes tl à t5 ont tendance à se dilater plus que les tubes t5 à t7. Il s'en suit des contraintes de compression et de flexion dans les tubes tl à t4 et des contraintes de traction et de flexion dans les tubes t5 h Xl. Compte tenu de l'aspect très hyperstatique de l'attache mécanique tube/collecteurs, c'est le tube t5 et la structure proche de l'extrémité de ce tube t5 qui la plus soumise au risque de voir se développer une crique par effet de fatigue de contrainte alternée en traction/flexion.In the following, the term "mechanical means" will be used to define in a general manner the subject of the invention. Nevertheless, it is clear that this expression can be translated also by the term "spacer", in particular to mark the fact that this mechanical means connects two manifolds. FIG. 1 shows an exchanger 1 with two independent circuits as conventionally produced according to the prior art. It comprises a first circuit A inside which circulates a first fluid and a circuit B within which a second fluid circulates. This exchanger comprises two collectors C1 and C2 responsible for collecting the fluid. These collectors are each separated in two parts by a wall P1 and P2. A set of tubes (here numbering 7) t1 to t7 connect the two collectors. Thin aluminum accordion folded strips are interposed between the tubes to increase the contact area between the tubes and the ambient air. Each circuit includes an entrance and an exit. The fluid of the circuit A enters the circuit via the inlet Ea and leaves the outlet Sa after having circulated in the tubes t1, t2, t3 and t4. The fluid of the circuit B enters the circuit through the entry Eb and leaves the outlet Sb after having circulated in the tubes X5, t6, and t7. In the case where the average temperature of the first fluid in the circuit A is greater than the average temperature of the second fluid of the circuit B, the tubes t1 to t4 are hotter than the tubes t5 to t7. In this case the tubes t1 to t5 tend to expand more than the tubes t5 to t7. This results in compressive and flexural stresses in the tubes t1 to t4 and tensile and flexural stresses in the tubes t5 h X1. Given the very hyperstatic aspect of the tube / collector mechanical fastener, it is the t5 tube and the structure close to the end of this tube t5 that is most likely to develop a crack due to alternating stress fatigue in tension / flexion.
Dans les exemples de réalisation non limitatifs illustrés dans la figure 2 à 8, l' échangeur comprend principalementIn the nonlimiting exemplary embodiments illustrated in FIGS. 2 to 8, the heat exchanger mainly comprises
- deux circuits indépendants A et B, un collecteur Cl qui est séparés en deux parties indépendantes par une paroi Pl,two independent circuits A and B, a collector C1 which are separated in two independent parts by a wall P1,
- un deuxième collecteur C2 qui est séparé également en deux parties indépendantes par une paroi P2, - trois tubes tl, t2, et t3 qui relient de façon étanche le collecteur Cl au collecteur C2 et qui permettent au premier fluide du circuit A de circuler depuis une entrée Ea à Une sortie Sa,a second collector C2 which is also separated into two independent parts by a wall P2, three tubes t1, t2, and t3 which sealingly connect the collector C1 to the collector C2 and which allow the first fluid of the circuit A to flow from an input Ea to an output Sa,
- trois tubes t5, t6, et t7 qui relient de façon étanche le collecteur C 1 au collecteur C2 et qui permettent au deuxième fluide du circuit B de circuler depuis une entrée Eb à une sortie Sb,three tubes t5, t6, and t7 which sealingly connect the collector C 1 to the collector C2 and which allow the second fluid of the circuit B to flow from an input Eb to an output Sb,
- des lamelles fines en alliage léger pliées en forme d'accordéon qui sont intercalées entre les tubes pour augmenter la surface de contact entre les tubes et l'air ambiant. - une liaison mécanique S qui relie mécaniquement les deux collecteurs.thin slats of light alloy folded accordion-shaped which are interposed between the tubes to increase the contact surface between the tubes and the ambient air. a mechanical connection S which mechanically connects the two collectors.
Dans un troisième exemple de mode de réalisation suivant l'invention illustré dans la figure 2, la liaison mécanique S est constituée par un tube t4 en alliage léger. Par mesure d'homogénéité, et afin de réduire le coût de fabrication ce type de tube est similaire aux tubes utilisés pour la circulation de fluide. Par contre dans le tube t4 utilisé comme structure additionnelle il ne circule pas de fluide. Pour éviter toute circulation de fluide dans ce tube, un ou deux bouchon(s) 3 obture(nt) une ou les deux extrémité(s) du tube t4. La encore le tube t4 n'étant pas alimenté par un fluide se trouve à une température intermédiaire ce qui réduit quelque peu les contraintes dues aux écarts de température existant entre les deux circuits.In a third exemplary embodiment according to the invention illustrated in FIG. 2, the mechanical connection S consists of a light alloy tube t4. As a measure of homogeneity, and in order to reduce the manufacturing cost, this type of tube is similar to the tubes used for the circulation of fluid. By cons in the tube t4 used as additional structure it does not circulate fluid. To prevent any fluid flow in this tube, one or two plugs 3 closes one or both ends of the tube t4. The still t4 tube is not supplied by a fluid is at an intermediate temperature which reduces somewhat the constraints due to temperature differences between the two circuits.
Dans un quatrième exemple de mode de réalisation suivant l'invention illustré dans la figure 3, la liaison mécanique S, ou entretoise, est constituée par deux tubes t3 et t4 en alliage léger. Ces deux tubes sont obturés à une ou deux de leurs extrémités et donc comme dans l'exemple précédent ne sont pas traversés par les fluides. La encore les tubes t3 et t4 n'étant pas alimentés par un fluide se trouvent à une température intermédiaire ce qui réduit quelque peu les contraintes dues aux écarts de température existant entre les deux circuits. Dans un cinquième exemple de mode de réalisation suivant l'invention illustré dans la figure 4, la liaison mécanique S est constituée par deux tubes t4 et t5 en alliage léger. Ces deux tubes sont obturés à une ou deux de leurs extrémités et donc comme dans l'exemple précédent ne sont pas traversés par les fluides. La encore les tubes t4 et t5 n'étant pas alimentés par un fluide se trouvent à une température intermédiaire ce qui réduit quelque peu les contraintes dues aux écarts de température existant entre les deux circuits.In a fourth exemplary embodiment according to the invention illustrated in FIG. 3, the mechanical connection S, or spacer, consists of two tubes t3 and t4 made of light alloy. These two tubes are closed at one or two of their ends and therefore as in the previous example are not traversed by the fluids. Again the tubes t3 and t4 are not supplied by a fluid are at an intermediate temperature which reduces somewhat the constraints due to temperature differences between the two circuits. In a fifth exemplary embodiment according to the invention illustrated in FIG. 4, the mechanical connection S consists of two tubes t4 and t5 made of light alloy. These two tubes are closed at one or two of their ends and therefore as in the previous example are not traversed by the fluids. Again the tubes t4 and t5 not being supplied by a fluid are at an intermediate temperature which reduces somewhat the constraints due to temperature differences between the two circuits.
Dans un sixième exemple de mode de réalisation suivant l'invention illustré dans la figure 5, la liaison mécanique S est constituée par quatre tubes t3, t4, t5 et t6-en alliage léger. Ces quatre tubes sont obturés à une ou deux de leurs extrémités et donc comme dans l'exemple précédent ne sont pas traversés par les fluides. La encore les tubes t4, t5, t6, et t7 n'étant pas alimentés par un fluide se trouvent à une température intermédiaire ce qui réduit quelque peu les contraintes dues aux écarts de température existant entre les deux circuits.In a sixth exemplary embodiment according to the invention illustrated in FIG. 5, the mechanical connection S consists of four tubes t3, t4, t5 and t6-light alloy. These four tubes are closed at one or two of their ends and therefore as in the previous example are not traversed by the fluids. Again the tubes t4, t5, t6, and t7 not being supplied by a fluid are at an intermediate temperature which reduces somewhat the constraints due to temperature differences between the two circuits.
Dans un septième exemple de mode de réalisation suivant l'invention illustré dans la figure 6, la liaison mécanique S est constituée par un tube t4 en alliage léger. Ce tube est partiellement obturé et est traversé par le fluide mais avec un débit plus faible. L'influence d'un tel tube sur les contraintes structurales est donc plus faible que s'il s'agissait d'un tube complètement obturé mais permet tout de même de réduire quelque peu les contraintes dues aux écarts de température existant entre les deux circuits.In a seventh exemplary embodiment according to the invention illustrated in FIG. 6, the mechanical connection S consists of a light alloy tube t4. This tube is partially closed and is traversed by the fluid but with a lower flow. The influence of such a tube on the structural constraints is therefore lower than if it were a completely closed tube but still allows to reduce somewhat the constraints due to temperature differences between the two circuits .
Dans un sixième exemple de mode de réalisation suivant l'invention illustré dans la figure 6, la liaison mécanique S est constituée par deux tubes t3 et t4 en alliage léger. Ces tubes sont partiellement obturés et sont traversés par le fluide mais avec un débit plus faible. L'influence de tels tubes sur les contraintes structurales est donc plus faible que s'il s'agissait de tubes complètement obturés mais permet tout de même de réduire quelque peu les contraintes dues aux écarts de température existant entre les deux circuits.In a sixth exemplary embodiment according to the invention illustrated in FIG. 6, the mechanical connection S consists of two tubes t3 and t4 made of light alloy. These tubes are partially blocked and are traversed by the fluid but with a lower flow rate. The influence of such tubes on the structural stresses is therefore lower than if they were tubes completely closed but still allows to reduce somewhat the constraints due to temperature differences between the two circuits.
Dans un neuvième exemple de mode de réalisation suivant l'invention illustré dans la figure 8, la liaison mécanique S est constituée par trois tubes t3, t4 et t5 en alliage léger. Ces tubes sont partiellement obturés et sont traversés par le fluide mais avec un débit plus faible. L'influence de tels tubes sur les contraintes structurales est donc plus faible que s'il s'agissait de tubes complètement obturés mais permet tout de même de réduire quelque peu les contraintes dues aux écarts de température existant entre les deux circuits.In a ninth exemplary embodiment according to the invention illustrated in FIG. 8, the mechanical connection S consists of three tubes t3, t4 and t5 made of light alloy. These tubes are partially blocked and are traversed by the fluid but with a lower flow rate. The influence of such tubes on the structural stresses is therefore lower than if it were completely closed tubes but still allows to reduce somewhat the constraints due to temperature differences between the two circuits.
Dans un huitième exemple de mode de réalisation suivant l'invention illustré dans la figure 9, la liaison mécanique S est constituée par une plaque métallique P, ici en alliage léger, qui traverse de part en part l'échangeur 1. Cette plaque P est brasée sur le pourtour de chaque collecteur afin d'assurer Pétanchéité entre les deux circuits, et constitue donc un lien rigide entre les deux collecteurs. Ainsi cette plaque P se trouve à une température intermédiaire ce qui réduit les contraintes dues aux écarts de température existant entre les deux circuits. Cette plaque peut avantageusement être remplacée par une plaque creuse (figure 10).In an eighth exemplary embodiment according to the invention illustrated in FIG. 9, the mechanical connection S consists of a metal plate P, in this case a light alloy, which passes right through the exchanger 1. This plate P is brazed around the perimeter of each manifold to ensure sealing between the two circuits, and therefore constitutes a rigid link between the two collectors. Thus this plate P is at an intermediate temperature which reduces the constraints due to temperature differences between the two circuits. This plate may advantageously be replaced by a hollow plate (FIG. 10).
L'homme de l'art pourra appliquer ce concept à de nombreux autres systèmes similaires sans sortir du cadre de l'invention défini dans les revendications jointes. Those skilled in the art can apply this concept to many other similar systems without departing from the scope of the invention defined in the appended claims.

Claims

REVENDICATIONS
1. Echangeur (1) comportant au moins deux circuits (A) et (B), cet échangeur comprenant : - une série de tubes pour la circulation de fluide de l'un ou l'autre des deux circuits (A) ou (B),1. Exchanger (1) comprising at least two circuits (A) and (B), this exchanger comprising: - a series of tubes for the circulation of fluid of one or other of the two circuits (A) or (B) )
- au moins deux collecteurs, chacun reliés aux extrémités opposées des tubes, lesdits tubes débouchant respectivement dans lesdits collecteurs,at least two collectors, each connected to the opposite ends of the tubes, said tubes opening respectively into said collectors,
- une cloison (Pl et P2) prévue dans chacun desdits collecteurs définissant au moins une séparation afin d'isoler le premier circuit (A) du second circuit de fluide (B),a partition (P1 and P2) provided in each of said collectors defining at least one separation in order to isolate the first circuit (A) from the second fluid circuit (B),
- un moyen de liaison mécanique (S) reliant la structure de la chambre d'admission à la chambre de collecte est destiné à réduire de façon significative les contraintes mécaniques structurales existant au niveau de la séparation entre les deux circuits, caractérisé en ce que le moyen mécanique (S) consiste en une obturation totale ou partielle d'au moins un tube situé contigu aux cloisons (Pl) et (P2).a mechanical connection means (S) connecting the structure of the intake chamber to the collection chamber is designed to significantly reduce the structural mechanical stresses existing at the separation between the two circuits, characterized in that the mechanical means (S) consists of a total or partial closure of at least one tube located adjacent to the partitions (P1) and (P2).
2. Echangeur selon la revendication 1, caractérisé en ce que l'élément de liaison mécanique (S) consiste en une entretoise.2. Exchanger according to claim 1, characterized in that the mechanical connecting element (S) consists of a spacer.
3. Echangeur selon la revendication 1 ou 2, caractérisé en ce que l' entretoise, ou moyen mécanique (S), se trouve à proximité immédiate d'un tube de circulation de fluide le plus proche de la séparation.3. Exchanger according to claim 1 or 2, characterized in that the spacer, or mechanical means (S), is in the immediate vicinity of a fluid circulation tube closest to the separation.
4. Echangeur selon la revendication 1 caractérisé en ce que l'élément de liaison mécanique (S) reliant mécaniquement les deux collecteurs est placé entre deux tubes adjacents des deux circuits. 4. Exchanger according to claim 1 characterized in that the mechanical connecting element (S) mechanically connecting the two collectors is placed between two adjacent tubes of the two circuits.
5. Echangeur selon l'une quelconque des revendications précédentes caractérisé en ce que l'élément de liaison mécanique (S) ou entretoise reliant mécaniquement les deux collecteurs est disposé dans une région de l'échangeur dans laquelle la température et donc la dilatation est à un niveau intermédiaire entre celles des deux circuits,5. Exchanger according to any one of the preceding claims characterized in that the mechanical connecting element (S) or spacer mechanically connecting the two collectors is disposed in a region of the exchanger in which the temperature and therefore the expansion is at an intermediate level between those of the two circuits,
6. Echangeur selon la revendication 1 caractérisé en ce que l'élément de liaison mécanique (S) reliant mécaniquement les deux collecteurs est composé d'au moins deux barres ou entretoises pleines ou creuses disposées de chaque coté de la cloison de séparation existant entre les chambres de distributions.6. Exchanger according to claim 1 characterized in that the mechanical connecting element (S) mechanically connecting the two collectors is composed of at least two bars or solid or hollow spacers arranged on each side of the partition between the partitions. distribution rooms.
7. Echangeur selon l'une des revendications précédentes caractérisé en ce que l'élément de liaison mécanique (S) ou entretoise consiste en un prolongement des cloisons de séparation desdites chambres.7. Exchanger according to one of the preceding claims characterized in that the mechanical connecting element (S) or spacer consists of an extension of the partition walls of said chambers.
8. Echangeur selon l'une des revendications précédentes caractérisé en ce que l'élément de liaison mécanique (S) ou entretoise est constitué par un tube identique aux autres tubes d'échange thermique mais où ne circule pas de fluide.8. Exchanger according to one of the preceding claims characterized in that the mechanical connecting element (S) or spacer is constituted by a tube identical to the other heat exchange tubes but where does not circulate fluid.
9. Echangeur selon l'une des revendications précédentes caractérisé en ce que l'élément de liaison mécanique (S) ou entretoise est constitué par au moins un tube d'échange thermique identique aux autres tubes d'échange thermique mais ayant un orifice d'entrée et/ou de sortie de fluide restreint afin de limiter le débit de fluide.9. Exchanger according to one of the preceding claims characterized in that the mechanical connecting element (S) or spacer is constituted by at least one heat exchange tube identical to the other heat exchange tubes but having an orifice of inlet and / or outlet of restricted fluid to limit the flow of fluid.
10. Echangeur selon l'une des revendications précédentes caractérisé en ce que l'élément de liaison mécanique (S) ou entretoise est constitué par au moins un tube d'échange thermique identique aux autres tubes d'échange thermique mais ayant une épaisseur de paroi plus importante au moins dans une zone située près de l'orifice d'entrée et/ou de sortie de fluide afin de limiter le débit de fluide et de renforcer mécaniquement au moins localement l'élément de liaison.10. Exchanger according to one of the preceding claims characterized in that the mechanical connecting element (S) or spacer is constituted by at least one heat exchange tube identical to the other heat exchange tubes but having a wall thickness more important less in an area near the inlet and / or fluid outlet to limit the flow of fluid and mechanically strengthen at least locally the connecting element.
11. Echangeur selon l'une des revendications précédentes caractérisé en ce que l'élément de liaison mécanique (S) ou entretoise est constitué par plusieurs tubes identiques aux autres tubes d'échange thermique mais où ne circule pas de fluide, ces tubes étant disposés de part et d'autre de la paroi de séparation des deux circuits.11. Exchanger according to one of the preceding claims characterized in that the mechanical connecting element (S) or spacer is constituted by several tubes identical to the other heat exchange tubes but where no fluid circulates, these tubes being arranged on both sides of the separation wall of the two circuits.
12. Echangeur selon l'une des revendications précédentes caractérisé en ce que l' echangeur est complètement assemblé mécaniquement par sertissage sans brasage.12. Exchanger according to one of the preceding claims characterized in that the exchanger is completely assembled mechanically by crimping without brazing.
13. Echangeur selon l'une des revendications précédentes caractérisé en ce que la cloison de séparation séparant les deux circuits, comporte un petit orifice laissant circuler le fluide d'un circuit à l'autre. 13. Exchanger according to one of the preceding claims characterized in that the partition wall separating the two circuits, has a small hole allowing the fluid to circulate from one circuit to another.
PCT/EP2007/063740 2007-02-06 2007-12-11 Multi-circuit heat exchanger WO2008107031A1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
US12/525,934 US20110030935A1 (en) 2007-02-06 2007-12-11 Multi-Circuit Heat Exchanger
EP07848063A EP2115374A1 (en) 2007-02-06 2007-12-11 Multi-circuit heat exchanger
JP2009547553A JP2010518344A (en) 2007-02-06 2007-12-11 Multi-circuit heat exchanger

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0700815 2007-02-06
FR0700815A FR2912209B1 (en) 2007-02-06 2007-02-06 MULTI-CIRCUIT EXCHANGER

Publications (2)

Publication Number Publication Date
WO2008107031A1 true WO2008107031A1 (en) 2008-09-12
WO2008107031A8 WO2008107031A8 (en) 2008-11-20

Family

ID=38520613

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2007/063740 WO2008107031A1 (en) 2007-02-06 2007-12-11 Multi-circuit heat exchanger

Country Status (6)

Country Link
US (1) US20110030935A1 (en)
EP (1) EP2115374A1 (en)
JP (1) JP2010518344A (en)
CN (1) CN101600930A (en)
FR (1) FR2912209B1 (en)
WO (1) WO2008107031A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011241728A (en) * 2010-05-17 2011-12-01 Toyota Motor Corp Cooling device of vehicle
WO2018096812A1 (en) * 2016-11-22 2018-05-31 株式会社デンソー Cooling device

Families Citing this family (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008038498A1 (en) * 2008-08-20 2010-02-25 Behr Gmbh & Co. Kg Heat exchanger for a motor vehicle
FR2947330B1 (en) * 2009-06-25 2014-01-03 Valeo Systemes Thermiques HEAT EXCHANGER COMPRISING A BEAM OF TUBES WITH AN INACTIVE TUBE
FR2947331B1 (en) * 2009-06-29 2011-07-29 Valeo Systemes Thermiques HEAT EXCHANGER COMPRISING A BEAM OF TUBES WITH AT LEAST ONE INACTIVE TUBE
NL1037959C2 (en) * 2010-05-14 2011-11-15 Weleveld Beheer B V Van CONNECTION ELEMENT FOR CONNECTING CHANNELS OF CHANNEL PLATES.
WO2011142673A2 (en) * 2010-05-14 2011-11-17 Van Weleveld Beheer B.V. Connection element for connecting cores of hollow-core plates
NL1038239C2 (en) * 2010-09-14 2012-03-15 Weleveld Beheer B V Van CONNECTION ELEMENT FOR CONNECTING CHANNELS OF CHANNEL PLATES.
KR20140006681A (en) * 2012-07-06 2014-01-16 삼성전자주식회사 Heat exchanger and method for the same
FR2995670A3 (en) * 2012-09-20 2014-03-21 Renault Sa Heat exchanger for exchanging heat between functional fluid of e.g. electrically driven car and air, has distribution elements directing cooling liquid and refrigerant fluid towards collecting elements and crossed by air flows, respectively
CA2839884C (en) * 2013-02-19 2020-10-27 Scambia Holdings Cyprus Limited Plate heat exchanger including separating elements
BR102013014855B1 (en) * 2013-06-13 2020-12-01 Valeo Sistemas Automotivos Ltda vehicle heat exchanger
EP2952832A1 (en) * 2014-06-06 2015-12-09 Vaillant GmbH Heat pump system with integrated economizer
JP6414504B2 (en) * 2015-04-14 2018-10-31 株式会社デンソー Heat exchanger
ITUB20150576A1 (en) * 2015-04-24 2016-10-24 Hexsol Italy Srl HEAT EXCHANGER WITH BUNDLE TUBE AND IMPROVED STRUCTURE
US10126065B2 (en) * 2015-06-17 2018-11-13 Mahle International Gmbh Heat exchanger assembly having a refrigerant distribution control using selective tube port closures
FR3044396B1 (en) * 2015-11-30 2019-12-20 Valeo Systemes Thermiques HEAT EXCHANGER FOR A MOTOR VEHICLE COMPRISING A COLLECTOR BOX
FR3049051B1 (en) * 2016-03-18 2019-04-19 Valeo Systemes Thermiques HEAT EXCHANGER AND METHOD FOR MANUFACTURING THE SAME
US20170328637A1 (en) * 2016-05-13 2017-11-16 Denso Thermal Systems S.P.A. Heat exchanger with dummy tubes
FR3054654B1 (en) * 2016-07-29 2019-07-12 Valeo Systemes Thermiques COLLECTOR PLATE FOR HEAT EXCHANGER
KR102622735B1 (en) * 2016-09-13 2024-01-09 삼성전자주식회사 Heat exchanger
IL248304B (en) * 2016-10-10 2021-07-29 Magen Eco Energy A C S Ltd Heat exchanger and module thereof
JP2018146216A (en) * 2017-03-09 2018-09-20 株式会社ティラド Multi-passage heat exchanger
JP6890509B2 (en) * 2017-09-13 2021-06-18 三菱電機株式会社 Air conditioner

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2712674A1 (en) * 1993-11-19 1995-05-24 Valeo Thermique Moteur Sa Heat exchanger for vehicle cooling system
DE19536116A1 (en) * 1995-09-28 1997-04-03 Behr Gmbh & Co Heat transmitter for road vehicle
US5875834A (en) * 1997-09-11 1999-03-02 Long Manufacturing Ltd. Baffle insert for heat exchangers
FR2785376A1 (en) * 1998-10-29 2000-05-05 Valeo Thermique Moteur Sa Heat exchanger for motor vehicle internal combustion engine has inactive tube in bundle separating manifold into two sections
US20050217831A1 (en) * 2002-06-18 2005-10-06 Showa Denko K.K. Unit-type heat exchanger

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54149056A (en) * 1976-11-29 1979-11-21 Sa France Ferodo Production method of heat exchanger
FR2715216B1 (en) * 1994-01-20 1996-02-16 Valeo Thermique Moteur Sa Heat exchanger tube, process for its conformation and heat exchanger comprising such tubes.
JPH11351785A (en) * 1998-06-04 1999-12-24 Denso Corp Heat exchanger and its manufacture
JP2003302190A (en) * 2002-04-09 2003-10-24 Toyo Radiator Co Ltd Corrugated fin type heat exchanger
JP2004278867A (en) * 2003-03-13 2004-10-07 Calsonic Kansei Corp Core part structure of heat exchanger
JP4179104B2 (en) * 2003-08-26 2008-11-12 株式会社デンソー Double heat exchanger
JP2005083725A (en) * 2003-09-11 2005-03-31 Calsonic Kansei Corp Integral heat exchanger
CN1910420B (en) * 2003-12-11 2010-05-12 贝尔两合公司 Heat-exchanging devices system

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2712674A1 (en) * 1993-11-19 1995-05-24 Valeo Thermique Moteur Sa Heat exchanger for vehicle cooling system
DE19536116A1 (en) * 1995-09-28 1997-04-03 Behr Gmbh & Co Heat transmitter for road vehicle
US5875834A (en) * 1997-09-11 1999-03-02 Long Manufacturing Ltd. Baffle insert for heat exchangers
FR2785376A1 (en) * 1998-10-29 2000-05-05 Valeo Thermique Moteur Sa Heat exchanger for motor vehicle internal combustion engine has inactive tube in bundle separating manifold into two sections
US20050217831A1 (en) * 2002-06-18 2005-10-06 Showa Denko K.K. Unit-type heat exchanger

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011241728A (en) * 2010-05-17 2011-12-01 Toyota Motor Corp Cooling device of vehicle
WO2018096812A1 (en) * 2016-11-22 2018-05-31 株式会社デンソー Cooling device

Also Published As

Publication number Publication date
JP2010518344A (en) 2010-05-27
WO2008107031A8 (en) 2008-11-20
CN101600930A (en) 2009-12-09
EP2115374A1 (en) 2009-11-11
FR2912209A1 (en) 2008-08-08
US20110030935A1 (en) 2011-02-10
FR2912209B1 (en) 2013-08-23

Similar Documents

Publication Publication Date Title
WO2008107031A1 (en) Multi-circuit heat exchanger
EP2137477B1 (en) Heat exchanger for gas
FR2681419A1 (en) Heat exchanger with tube bundle including several fluid circuits
FR2912811A1 (en) High pressure heat exchanger for motor vehicle, has collecting boxes collecting fluid circulating in plane tubes, and separation wall with recess to authorize passage of another fluid on both sides of wall between rows of two of tubes
WO2009000581A1 (en) Heat exchange module for two heat exchange circuits
EP2208955A1 (en) heat exchange fin for a heat exchange system
FR2711236A1 (en) Heat exchanger with two rows of tubes, in particular for a motor vehicle.
FR2929390A1 (en) HEAT EXCHANGER PLATE
EP0964219A1 (en) Flat tube heat exchanger
FR2906357A1 (en) LIQUID / GAS TYPE HEAT EXCHANGER, IN PARTICULAR FOR A MOTOR VEHICLE AIR CONDITIONING EQUIPMENT USING A SUPERCRITICAL OPERATING REFRIGERANT FLUID SUCH AS CO2
FR2898405A1 (en) HEAT EXCHANGER, ESPECIALLY A GAS COOLER, HAVING TWO CONNECTED TUBES TAPES
WO2008053090A1 (en) Heat exchanger with an extruded body
FR2936043A1 (en) Heat exchanger i.e. charge air cooler, for turbocharged engine of vehicle, has charge air circulation tubes for circulating charge air, and case for receiving tubes, where tubes are formed by case and two plates that are brazed on case
FR2832788A1 (en) Profile for tubes in heat exchangers used in motor vehicles, uses folded metal sheet to form tube and bends one edge over so that it rests on other wall of tube, providing strength to the tube during manufacture
EP2084388B1 (en) Egr/by pass valve unit and heat exchanger device provided with such a valve unit
EP1015838B1 (en) Motor vehicle heat exchanger and method for making same
EP3384224B1 (en) Motor vehicle heat exchanger comprising a header tank
WO2008135321A1 (en) Extruded heat exchanger
EP1980811A1 (en) Multipass heat exchanger
WO2008053092A1 (en) Heat exchanger with central channel for a heat exchange fluid
FR2856137A1 (en) Heat exchanger for condenser of air conditioning device, has reinforcement part connected to one lateral plate to form rectangular transversal section with plate, where plate and part have U shaped transversal section
EP0908691B1 (en) Cross-flow heat exchanger
FR2989768A1 (en) Beam for plates of heat exchanger e.g. supercharging air cooler, in air intake module for thermal engine of car, has bar located at exchange zone between two ends of stack of plates, so as to connect peripheral edge of plates
FR2811015A1 (en) EXHAUST VOLUME AND EXHAUST DEVICE COMPRISING SAME
FR3075343A1 (en) HEAT RECOVERY DEVICE AND METHOD OF MANUFACTURING THE SAME

Legal Events

Date Code Title Description
WWE Wipo information: entry into national phase

Ref document number: 200780050987.6

Country of ref document: CN

121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 07848063

Country of ref document: EP

Kind code of ref document: A1

WWE Wipo information: entry into national phase

Ref document number: 2007848063

Country of ref document: EP

ENP Entry into the national phase

Ref document number: 2009547553

Country of ref document: JP

Kind code of ref document: A

NENP Non-entry into the national phase

Ref country code: DE

WWE Wipo information: entry into national phase

Ref document number: 12525934

Country of ref document: US