EP2936027B1 - Heat exchanger, in particular for a refrigerant circulating in a motor vehicle - Google Patents

Heat exchanger, in particular for a refrigerant circulating in a motor vehicle Download PDF

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Publication number
EP2936027B1
EP2936027B1 EP13803018.4A EP13803018A EP2936027B1 EP 2936027 B1 EP2936027 B1 EP 2936027B1 EP 13803018 A EP13803018 A EP 13803018A EP 2936027 B1 EP2936027 B1 EP 2936027B1
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EP
European Patent Office
Prior art keywords
plates
fluid
unit
blades
collectors
Prior art date
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Application number
EP13803018.4A
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German (de)
French (fr)
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EP2936027A1 (en
Inventor
Christophe Denoual
Alain Pourmarin
Frédéric TISON
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Valeo Systemes Thermiques SAS
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Valeo Systemes Thermiques SAS
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Publication of EP2936027A1 publication Critical patent/EP2936027A1/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
    • F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D7/0008—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one medium being in heat conductive contact with the conduits for the other medium
    • F28D7/0025—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one medium being in heat conductive contact with the conduits for the other medium the conduits for one medium or the conduits for both media being flat tubes or arrays of tubes
    • 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
    • F28D9/00—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • 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
    • F28D9/00—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D9/0031—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one heat-exchange medium being formed by paired plates touching each other
    • F28D9/0043—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one heat-exchange medium being formed by paired plates touching each other the plates having openings therein for circulation of at least one heat-exchange medium from one conduit to another
    • 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
    • F28D9/00—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D9/0031—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one heat-exchange medium being formed by paired plates touching each other
    • F28D9/0043—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one heat-exchange medium being formed by paired plates touching each other the plates having openings therein for circulation of at least one heat-exchange medium from one conduit to another
    • F28D9/005—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one heat-exchange medium being formed by paired plates touching each other the plates having openings therein for circulation of at least one heat-exchange medium from one conduit to another the plates having openings therein for both heat-exchange media
    • 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
    • F28D9/00—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D9/0031—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one heat-exchange medium being formed by paired plates touching each other
    • F28D9/0043—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one heat-exchange medium being formed by paired plates touching each other the plates having openings therein for circulation of at least one heat-exchange medium from one conduit to another
    • F28D9/0056—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one heat-exchange medium being formed by paired plates touching each other the plates having openings therein for circulation of at least one heat-exchange medium from one conduit to another with U-flow or serpentine-flow inside conduits; with centrally arranged openings on the plates
    • 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

Definitions

  • the invention relates to an exchanger. Although more particularly intended for applications as an internal exchanger of an air conditioning loop or exchanger between a refrigerant and a coolant, it will be more widely used for any type of heat exchange between two fluids.
  • Such a configuration multiplies the soldering zones, in particular at the junction between the connecting elements and the through holes of neighboring plates. It also multiplies the risks in terms of sealing between each of the fluid circuits. Specific sealing tests are thus necessary.
  • the zones of the plates provided with said connecting elements contribute little or no to the heat exchange. They therefore increase the cost of the exchanger by the mass of material engaged without improving the efficiency of the heat exchange.
  • a heat exchanger according to the preamble of claim 1 is known from the document FR 2 728 666 A .
  • the invention aims to overcome the aforementioned drawbacks and proposes in this sense a heat exchanger, in particular for refrigerant circulating in a motor vehicle, according to claim 1.
  • the heat exchanger includes a first circulation block a first fluid defining first circulation blades of said first fluid and a second circulation block of a second fluid defining second circulation blades of said second fluid, said blades being superimposed in a stacking direction of said blades so as to allow heat exchange between said first and second fluids.
  • said blocks allow a circulation of the first fluid avoiding the second block and a circulation of the second fluid avoiding the first block.
  • the exchanger is configured so that the blocks are nested one inside the other so as to ensure a heat exchange between the two fluids, without the first fluid passing through components of the second block or the second fluid. crosses components of the first block.
  • the invention relates to a heat exchanger, especially for a refrigerant circulating in a motor vehicle.
  • Said exchanger comprises a first block 1 for circulating a first fluid defining first blades 3 for circulating said first fluid and a second block 2 for circulating a second fluid defining second blades 4 for circulating said second fluid.
  • Said blades 3, 4 are superimposed in a stacking direction D of said blades so as to allow heat exchange between said first and second fluids.
  • Said blocks 1, 2 are formed, for example, of aluminum component and / or aluminum alloy. They may be assembled, for example, by brazing said components.
  • first block 1 extends from top to bottom while the second block 2 extends from bottom to top.
  • An example of circulation of the fluid in the blades of the first block 1 is illustrated by the arrows 1a, 1b 1c while an example of circulation of the fluid in the blades of the second block 2 is illustrated by the arrows 2a, 2b, 2c, on the right of the figure.
  • said heat exchanger may be an internal exchanger of an air conditioning circuit.
  • said first and second fluids may be a fluid known as R134a or R1234yf, among others, so that the first block 1 serves for the circulation of the fluid in a first state of temperature and pressure and the second block 2 serves for the circulation of the fluid in a second state of temperature and pressure.
  • said exchanger provides a heat exchange between said coolant and a coolant, such as a mixture of water and antifreeze, including glycol. Depending on the refrigerant state, it may then occur cooling or heating of the coolant.
  • a coolant such as a mixture of water and antifreeze, including glycol.
  • said blocks 1, 2 allow a circulation of the first fluid avoiding the second block 2 and a circulation of the second fluid avoiding the first block 1.
  • the exchanger is configured so that the blocks are nested one. in the other, here as two combs, without the first fluid passes through components of the second block 2 nor the second fluid passes through components of the first block 1. It can thus obtain a heat exchange between the two fluids while avoiding the more complex circulations of the state of the art.
  • Said blades 3, 4 extend in a longitudinal direction L, perpendicular to the stacking direction D.
  • Said first block 1 comprises collectors 5a, 5b for the first fluid, located at an edge d longitudinal end 7 of the blades 3 of said first block 1.
  • Said second block 2 comprises on its side collectors 6a, 6b for the second fluid, located at a longitudinal end edge 8 of the blades 4 of said second block 1.
  • said blades are configured here to make a U-shaped circuit to said fluid between a first 5a, 6a of said collectors and a second 5b, 6b said collectors the corresponding block.
  • the first 5a of the collectors of the first block 1 thus constitutes an inlet manifold for the first fluid while the second 5b collectors of said first block 1 constitutes an outlet manifold of said first fluid.
  • the first 6a of the collectors of the second block 2 constitutes an inlet manifold for the second fluid while the second 6b collectors of said second block 2 constitutes an outlet manifold of said second fluid.
  • the first fluid flows in the first block 1 being distributed by the inlet manifold 5a of said first block 1 in the blades 3 of said first block 1 where it follows the circuit 1a, 1b, 1c U referred above for then enter the corresponding outlet manifold 5b.
  • the second fluid circulates in the second block 2 being distributed by the inlet manifold 6a of said second block 2 in the blades 4 of said second block 2 where it follows the circuit 2a, 2b, 2c U referred above for then enter the corresponding output manifold 6b.
  • the circulation of the first fluid in the blades 3 of said first block 1 is carried out at the co-current of the circulation of the second fluid in the blades 4 of said second block 2.
  • the circulation of the first fluid in the blades 3 of said first block 1 advantageously takes place against the flow of the second fluid in the blades 4 of said second block 2.
  • the collectors 5a, 5b of the first block 1 are situated, for example, opposite a longitudinal end edge 10 of the blades of the second block 2, opposite the edge 8 longitudinal end of the blades 2 of the second block 2 at which are said collectors 6a, 6b of the second block 2.
  • the collectors 6a, 6b of the second block 2 are located vis-à-vis a longitudinal end edge 9 of the blades 3 of the first block 1, opposite the longitudinal end edge 7 of the blades 3 of the first block 1 at which are said collectors 5a, 5b of the first block 1.
  • said blocks 1, 2 are mounted head to tail.
  • the blades 3, 4 of each of said blocks 1, 2 are offset with respect to the blades 3, 4 of the other of said blocks 1, 2 in a direction orthogonal to said stacking direction D.
  • Said blocks 1, 2 comprise plates 11, 12, stacked in said stacking direction, said plates being associated in pairs to define said blades 3, 4 and said circulation circuits 1a, 1b, 1c, 2a, 2b, 2c for each of the fluids.
  • the pairs of plates 11 for the first fluid have a projecting portion 13 of the pairs of plates 12 for the second fluid, in planes orthogonal to said stacking direction so as to release a zone of said plates, said head plates, accommodating said collectors 5a, 5b of said first block 1.
  • the pairs of plates 12 for the second fluid have a projecting portion 14 of the pairs of plates 11 for the first fluid, in planes orthogonal to said stacking direction of to be able to release a zone of said plates, said head plates, accommodating said collectors 6a, 6b of said second block 2.
  • said pairs of plates 11 are made to communicate for the first fluid between them without passing through the pairs of plates 12 for the second fluid, and vice versa.
  • said pairs of plates 11 of the first block 1 are offset with respect to the pairs of plates 12 of the second block 2, in said longitudinal direction, and vice versa.
  • Said pairs of plates 11, 12 are advantageously identical to each other in the same block, except possibly for the pair or pairs of plates comprising an end plate of the stack, as will be detailed below.
  • Said heat exchanger comprises connections 15a, 15b, 16a, 16b of fluid between the plates 11, 12 of the pairs of plates of the same fluid, located at said plate heads 13, 14, so as to form said collectors 5a, 5b , 6a, 6b.
  • said links 15a, 15b, 16a, 16b for one of the fluids are located externally to the pairs of plates 11, 12 for the other fluid.
  • Said fluid connections 15a, 15b, 16a, 16b comprise, for example, stampings from said plates 11, 12.
  • the said stampings 15a, 15b of the plates 11 of the first block 1 come here in contact with the stampings 15a, 15b of the plate 11 against the neighboring pair of plates 11 of said first block 1.
  • said stampings 16a, 16b of the plates 12 of the second block 2 come here in contact with the stampings 16a, 16b of the plate 12 vis-à-vis -vis the adjacent pair of plates 12 of said second block 1.
  • the said stamps are provided with fluid passage opening.
  • the said stampings 15a, 15b, 16a, 16b thus effect the circulation of fluid from one pair of plates to the other, in the same block.
  • stampings 15a, 15b, 16a, 16b of the same manifold 5a, 5b, 6a, 6b are here located in the axial extension of each other so that said collectors be substantially rectilinear.
  • stampings of the pairs of plates for the circulation of the first fluid and the stampings of the pairs of plates for the circulation of the second fluid are located at two opposite longitudinal ends of the assembly formed by the two blocks 1, 2 .
  • Said plates 11, 12 comprise a longitudinal end edge 17, 18, said distal, opposite a longitudinal end edge 19, 20 opposite said plates at which are located said fluid connections 15a, 15b, 16a, 16b.
  • Said distal edge 17, 18 of the plates 11, 12 of one of the fluids is located between two plates 11, 12 opposite two adjacent pairs of plates for the circulation of the other fluid.
  • Said distal edge 17, 18 of the plates 11, 12 of one of the blocks 1, 2 is close to said fluid connections 15a, 15b, 16a, 16b of the other block.
  • said distal edge 17, 18 conforms to a portion of the contour of said fluid links 15a, 15b, 16a, 16b.
  • said plates 11, 12 of each of the blocks 1, 2 comprise a bottom 21, 22, a raised edge 23, 24 and a brazing lip 25, 26.
  • Said pair of plates are formed by two of said plates, provided identical, mounted head to tail so that their lips are in contact.
  • the brazing lip 25, 26 of the plates of one of the blocks 1, 2 is in contact with the stampings 15a, 15b, 16a, 16b of the plates of the other block 1, 2.
  • said plates of the first and / or second block may further comprise stops 32 ( figure 1 ) extending from said solder lips 26, in particular to facilitate the stacking of said plates before soldering.
  • Each of said pairs of plates 11, 12 comprises a duct for the U circulation of the corresponding fluid, between a first of said collectors 5a, 6a allowing an introduction of said fluid into said duct and a second of said collectors 5b, 6b allowing an output of said fluid out said conduit.
  • Said blades 11, 12 comprise an interferer 27, 28 of the flow of the first and / or second fluid.
  • said disruptors define longitudinal channels for circulation of the first and / or second fluid.
  • the desired U-shaped circulation is obtained by a stamped form of the bottom of the plates such as a central partial rib starting from longitudinal end edges provided with connecting pieces.
  • the inlet manifolds 5a, 6a open opposite the first channel portions of the disrupters 27, 28 while the outlet manifolds open vis-à-vis a second part of the channels separated from said first part of the channels 29, 30 by one or more central channels 29, 30.
  • said plates 11, 12 comprise locking stampings 31, 32, between the connecting pieces 15a , 15b, 16a, 16b, closing the one or more central channels 29, 30 at one of their longitudinal ends.
  • Said disruptors 27, 28 are advantageously shorter than the bottom 21, 22 of said plates 11, 12 to define a turning zone for the fluids in each of the pairs of plates.
  • the second block 2 comprises at least one pair of plates 12a, 12b end, in said stacking direction D.
  • Said pair of plates 12a, 12b terminal here comprises a plate 12a, having a longitudinal extension identical to the other plates said second block 2 and a terminal plate 12b having an upper longitudinal extension.
  • the plate 12b of upper termination comprises a projecting portion 34 provided with orifices, non-visible, for the passage of the first fluid.
  • Said holes come in correspondence of the collectors 5a, 5b of the first block 1.
  • Said upper termination plate 12b may also have orifices, also non-visible, for the passage of the second fluid to the corresponding collectors 6a, 6b.
  • Said exchanger then comprises one or more connection flanges 36, 38 for one and the other fluids, secured to said terminal plate 12b at said passage orifices.
  • said second block 2 here comprises not only the connection flange (s) 38 for the second fluid but also the connection flange 36 for the first fluid.
  • each of said blocks may comprise its own connection flange 100, 200, as already mentioned, coming respectively vis-à-vis the collectors 5a, 5b, 6a, 6b corresponding.
  • Said pair of upper terminal plates of each of the blocks 1, 2 is then identical to the pairs of non-terminal plates.
  • the lower termination plate 12b still in the orientation of the figure 2 , the second block 2 may comprise a projecting portion 40, provided with stampings 42 coming into contact with a bottom portion of the collectors 5a, 5b of the first block 1.
  • FIGS. 5, 6 illustrate an exchanger block 1, 2 as described above, possibly provided with a corresponding connection flange 100, 200.
  • the block or blocks are configured so as to fit into a block of the same configuration, with or without the same height of blades 3, 4, having a space 101, 102, open between said pairs of blades 3, 4 at longitudinal end edges 7, 8 of said blades.
  • Said blocks 1, 2 may be used according to the nested configuration already described or in other configurations, for example in the form, not illustrated, of an exchanger comprising a flow box of another fluid and such a block, placed in said housing, so as to benefit from a heat exchange between said other fluid and that flowing in said block.
  • the block or blocks may be provided with a spacer 110 between said pairs of plates 11. They can then be used, including exchangers on the air such as evaporators.

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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)

Description

L'invention concerne un échangeur. Bien que plus particulièrement destiné à des applications en tant qu'échangeur interne d'une boucle de climatisation ou échangeur entre un fluide réfrigérant et un fluide caloporteur, elle pourra plus largement être utilisée pour tout type d'échange de chaleur entre deux fluides.The invention relates to an exchanger. Although more particularly intended for applications as an internal exchanger of an air conditioning loop or exchanger between a refrigerant and a coolant, it will be more widely used for any type of heat exchange between two fluids.

Dans ce domaine, il est connu de nombreuses configurations d'échangeur définissant des lames de circulation pour chacun des fluides entre lesquels l'échange de chaleur doit avoir lieu. Il est en particulier connu des échangeurs brasés dans lesquels les lames sont définies par des plaques empilées entre lesquels les lames de circulation sont définies alternativement. Les lames de circulation de fluide sont reliées par des éléments de liaison débouchant au niveau d'orifices de passage également prévus dans les plaques de sorte que chaque fluide passe d'une de ses lames de circulation à l'autre sans pénétrer dans les lames de circulation de l'autre fluide. Les lames de circulation de chacun des fluides sont ainsi traversés par les éléments de liaison de l'autre fluide.In this field, it is known to many exchanger configurations defining circulation blades for each of the fluids between which the heat exchange must take place. In particular brazed exchangers are known in which the blades are defined by stacked plates between which the circulation blades are defined alternately. The fluid circulation blades are connected by connecting elements opening at the passage orifices also provided in the plates so that each fluid passes from one of its circulation blades to the other without penetrating into the blades. circulation of the other fluid. The circulation blades of each of the fluids are thus traversed by the connecting elements of the other fluid.

Une telle configuration multiplie les zones de brasage, en particulier au niveau de la jonction entre les éléments de liaison et les orifices de passage des plaques voisines. Elle multiplie également les risques en termes d'étanchéité entre chacun des circuits de fluide. Des tests d'étanchéité spécifiques sont ainsi nécessaires.Such a configuration multiplies the soldering zones, in particular at the junction between the connecting elements and the through holes of neighboring plates. It also multiplies the risks in terms of sealing between each of the fluid circuits. Specific sealing tests are thus necessary.

Par ailleurs, les zones des plaques munies desdits éléments de liaison contribuent pas ou peu à l'échange de chaleur. Elles augmentent donc le coût de l'échangeur par la masse de matière engagée sans pour autant améliorer l'efficacité de l'échange thermique.Moreover, the zones of the plates provided with said connecting elements contribute little or no to the heat exchange. They therefore increase the cost of the exchanger by the mass of material engaged without improving the efficiency of the heat exchange.

Un échangeur de chaleur selon le préambule de la revendication 1 est connu du document FR 2 728 666 A .A heat exchanger according to the preamble of claim 1 is known from the document FR 2 728 666 A .

L'invention a pour but de pallier les inconvénients précités et propose en ce sens un échangeur de chaleur, notamment pour fluide réfrigérant circulant dans un véhicule automobile, selon la revendication 1.The invention aims to overcome the aforementioned drawbacks and proposes in this sense a heat exchanger, in particular for refrigerant circulating in a motor vehicle, according to claim 1.

L'échangeur de chaleur comprend un premier bloc de circulation d'un premier fluide définissant des premières lames de circulation dudit premier fluide et un second bloc de circulation d'un second fluide définissant des secondes lames de circulation dudit second fluide, lesdites lames étant superposées selon une direction d'empilement desdites lames de manière à permettre un échange de chaleur entre lesdits premier et second fluides. Selon l'invention, lesdits blocs permettent une circulation du premier fluide évitant le second bloc et une circulation du second fluide évitant le premier bloc.The heat exchanger includes a first circulation block a first fluid defining first circulation blades of said first fluid and a second circulation block of a second fluid defining second circulation blades of said second fluid, said blades being superimposed in a stacking direction of said blades so as to allow heat exchange between said first and second fluids. According to the invention, said blocks allow a circulation of the first fluid avoiding the second block and a circulation of the second fluid avoiding the first block.

Autrement dit, l'échangeur est configuré pour que les blocs soient imbriqués l'un dans l'autre de façon à assurer un échange de chaleur entre les deux fluides, sans que le premier fluide traverse de composants du second bloc ni que le second fluide traverse de composants du premier bloc.In other words, the exchanger is configured so that the blocks are nested one inside the other so as to ensure a heat exchange between the two fluids, without the first fluid passing through components of the second block or the second fluid. crosses components of the first block.

Par une telle constitution en blocs, on évite de faire passer des éléments de liaison entre les lames de circulation de l'un des fluides à travers les lames de circulation de l'autre fluide. On diminue de la sorte les zones à braser et on limite les risques de fuite d'un circuit de circulation d'un fluide à l'autre. Les procédures de test pourront donc être simplifiées. On diminue en outre les zones de lames de circulation ne servant pas ou peu à l'échange de chaleur.By such a constitution in blocks, it is avoided to pass connecting elements between the circulation blades of one of the fluids through the circulation blades of the other fluid. This reduces the areas to be brazed and limits the risk of leakage of a circulation circuit from one fluid to another. The test procedures can therefore be simplified. In addition, areas of circulation slats which do not or do not serve the purpose of heat exchange are further reduced.

Selon l'invention:

  • lesdites lames s'étendent selon une direction longitudinale, perpendiculaire à la direction d'empilement,
  • ledit premier bloc comprend des collecteurs pour le premier fluide, situés au niveau d'un bord d'extrémité longitudinale des lames dudit premier bloc et/ou ledit second bloc comprend des collecteurs pour le second fluide, situés au niveau d'un bord d'extrémité longitudinale des lames dudit second bloc,
  • l'un et/ou l'autre desdits blocs comprend des plaques, empilées selon ladite direction d'empilement, lesdites plaques étant associées par paire pour définir lesdites lames de circulation, pour l'un et/ou l'autre des fluides,
  • les paires de plaques pour chacun des fluides présentent une partie en saillie des paires de plaques pour l'autre fluide, dans des plans orthogonaux à ladite direction d'empilement, de façon à pouvoir libérer une zone desdites plaques, dites tête plaques, accueillant lesdits collecteurs,
  • ledit échangeur comprend des liaisons de fluide entre les plaques des paires de plaques d'un même fluide, situées au niveau desdites têtes de plaques, de manière à former lesdits collecteurs,
  • lesdites liaisons sont situées extérieurement aux paires de plaques pour ledit autre fluide,
  • lesdites plaques comprennent un bord d'extrémité longitudinal, dit distal, opposé à un bord d'extrémité longitudinal opposé desdites plaques au niveau duquel sont situés lesdites liaisons de fluide, ledit bord distal étant situé entre deux plaques en vis-à-vis de deux paires voisines de plaques pour la circulation de l'autre fluide,
  • ledit bord distal épouse une partie du contour desdites liaisons de fluide,
  • lesdites lames comprennent un moyen de perturbation de l'écoulement du premier et du second fluide, un tel moyen étant par exemple du type d'une plaque emboutie, nommée alors perturbateur, qui est apte à s'intégrer dans un circuit d'écoulement du premier et/ou du second fluide.
According to the invention:
  • said blades extend in a longitudinal direction, perpendicular to the stacking direction,
  • said first block comprises manifolds for the first fluid, located at a longitudinal end edge of the blades of said first block and / or said second block comprises manifolds for the second fluid, located at an edge of longitudinal end of the blades of said second block,
  • one and / or the other of said blocks comprises plates, stacked in said stacking direction, said plates being associated in pairs to define said circulation blades, for one and / or the other of the fluids,
  • the pairs of plates for each of the fluids have a projecting portion of the pairs of plates for the other fluid, in planes orthogonal to said stacking direction, so as to be able to release an area of said plates, said head plates, accommodating said collectors,
  • said exchanger comprises fluid connections between the plates of the pairs of plates of a same fluid, located at said plate heads, so as to form said collectors,
  • said links are located externally to the pairs of plates for said other fluid,
  • said plates comprise a longitudinal end edge, said distal, opposed to an opposite longitudinal end edge of said plates at which are located said fluid connections, said distal edge being located between two plates facing two adjacent pairs of plates for the circulation of the other fluid,
  • said distal edge conforms to a portion of the contour of said fluid bonds,
  • said blades comprise means for disturbing the flow of the first and second fluids, such means being for example of the type of a stamped plate, then called disruptive, which is able to integrate into a flow circuit of the first and / or second fluid.

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

  • lesdites lames sont configurées pour faire faire un circuit en U au fluide entre un premier desdits collecteurs et un second desdits collecteurs du bloc correspondant,
  • les collecteurs du premier bloc sont situés en vis-à-vis d'un bord d'extrémité longitudinal des lames du second bloc, opposé au bord d'extrémité longitudinale des lames du second bloc au niveau duquel se trouvent lesdits collecteurs du second bloc,
  • les collecteurs du second bloc sont situés en vis-à-vis d'un bord d'extrémité longitudinal des lames du premier bloc, opposé au bord d'extrémité longitudinale des lames du premier bloc au niveau duquel se trouvent lesdits collecteurs du premier bloc,
  • lesdites liaisons de fluide comprennent des emboutis issus desdites plaques, lesdits emboutis venant au contact des emboutis de la plaque en vis-à-vis de la paire voisine de plaques pour la circulation du même fluide,
  • ledit bord distal des plaques de l'un des blocs est à proximité desdites liaisons de fluide de l'autre bloc, et réciproquement,
  • le second bloc comprend au moins une paire de plaques terminale, selon ladite direction d'empilement, comprenant une plaque présentant une extension longitudinale identique aux autres plaques dudit bloc et une plaque de terminaison présentant une extension longitudinale supérieure,
  • ledit second bloc comprend au moins une bride de connexion pour l'un des fluides assujettie à ladite plaque de terminaison.
According to different embodiments, which can be taken together or separately:
  • said blades are configured to make a U-shaped circuit to the fluid between a first of said collectors and a second of said collectors of the corresponding block,
  • the collectors of the first block are located vis-à-vis a longitudinal end edge of the blades of the second block, opposite the longitudinal end edge of the blades of the second block at which are said collectors of the second block,
  • the collectors of the second block are located vis-à-vis a longitudinal end edge of the blades of the first block, opposite the longitudinal end edge of the blades of the first block at which are said collectors of the first block,
  • said fluid connections comprise stampings from said plates, said stampings coming into contact with stampings of the plate opposite the neighboring pair of plates for the circulation of the same fluid,
  • said distal edge of the plates of one of the blocks is close to said fluid connections of the other block, and vice versa,
  • the second block comprises at least one pair of end plates, in said stacking direction, comprising a plate having a longitudinal extension identical to the other plates of said block and a termination plate having an upper longitudinal extension,
  • said second block comprises at least one connecting flange for one of the fluids secured to said termination plate.

Ces caractéristiques et d'autres de la présente invention sont illustrées ci après en référence aux dessins annexés, sur lesquels :

  • La figure 1 est une vue en perspective d'un mode de réalisation d'un échangeur de chaleur conforme à l'invention ;
  • La figure 2 est une vue en perspective, partiellement éclatée, de l'échangeur de la figure 1 ;
  • La figure 3 est une vue en perspective d'une première plaque de l'échangeur de la figure 1 ;
  • La figure 4 est une vue en perspective d'une autre plaque de l'échangeur de la figure 1 ;
  • La figure 5 est une vue de côté de l'un des blocs de circulation de fluide de l'échangeur de la figure 1, équipé d'une bride de connexion de fluide ;
  • La figure 6 est une vue côté de l'autre des blocs de circulation de fluide de l'échangeur de la figure 1, équipé d'une seule bride de connexion de fluide ; et
  • La figure 7 est une vue de côté d'un échangeur utilisant le bloc de la figure 5, ici équipé d'un composant supplémentaire.
These and other features of the present invention are illustrated below with reference to the accompanying drawings, in which:
  • The figure 1 is a perspective view of an embodiment of a heat exchanger according to the invention;
  • The figure 2 is a partially exploded perspective view of the heat exchanger figure 1 ;
  • The figure 3 is a perspective view of a first plate of the heat exchanger of the figure 1 ;
  • The figure 4 is a perspective view of another plate the exchanger of the figure 1 ;
  • The figure 5 is a side view of one of the fluid circulation blocks of the exchanger of the figure 1 equipped with a fluid connection flange;
  • The figure 6 is a side-by-side view of the fluid circulation blocks of the heat exchanger figure 1 equipped with a single fluid connection flange; and
  • The figure 7 is a side view of an exchanger using the block of the figure 5 , here equipped with an additional component.

Dans la description qui suit, des références identiques sont utilisées pour désigner des éléments analogues ou identiques.In the following description, identical references are used to designate similar or identical elements.

Comme illustré aux figures 1 et 2, l'invention concerne un échangeur de chaleur, notamment pour fluide réfrigérant circulant dans un véhicule automobile.As illustrated in figures 1 and 2 the invention relates to a heat exchanger, especially for a refrigerant circulating in a motor vehicle.

Ledit échangeur comprend un premier bloc 1 de circulation d'un premier fluide définissant des premières lames 3 de circulation dudit premier fluide et un second bloc 2 de circulation d'un second fluide définissant des secondes lames 4 de circulation dudit second fluide. Lesdites lames 3, 4 sont superposées selon une direction d'empilement D desdites lames de manière à permettre un échange de chaleur entre lesdits premier et second fluides.Said exchanger comprises a first block 1 for circulating a first fluid defining first blades 3 for circulating said first fluid and a second block 2 for circulating a second fluid defining second blades 4 for circulating said second fluid. Said blades 3, 4 are superimposed in a stacking direction D of said blades so as to allow heat exchange between said first and second fluids.

Lesdits blocs 1, 2 sont formés, par exemple, de composant en aluminium et/ou alliage d'aluminium. Ils pourront être assemblés, par exemple, par brasage desdits composants.Said blocks 1, 2 are formed, for example, of aluminum component and / or aluminum alloy. They may be assembled, for example, by brazing said components.

A la figure 1, ledit premier bloc 1 s'étend du haut vers le bas tandis que le second bloc 2 s'étend du bas vers le haut. Un exemple de circulation du fluide dans les lames du premier bloc 1 est illustré par les flèches 1a, 1b 1c tandis qu'un exemple de circulation du fluide dans les lames du second bloc 2 est illustré par les flèches 2a, 2b, 2c, sur la droite de la figure.To the figure 1 said first block 1 extends from top to bottom while the second block 2 extends from bottom to top. An example of circulation of the fluid in the blades of the first block 1 is illustrated by the arrows 1a, 1b 1c while an example of circulation of the fluid in the blades of the second block 2 is illustrated by the arrows 2a, 2b, 2c, on the right of the figure.

Selon un premier exemple d'application, ledit échangeur de chaleur pourra être un échangeur interne d'un circuit de climatisation. Autrement dit, lesdits premier et second fluides pourront être un fluide connu sous le nom de R134a ou R1234yf, entre autres, de telle sorte que le premier bloc 1 sert à la circulation du fluide dans un premier état de température et de pression et le second bloc 2 sert à la circulation du fluide dans un second état de température et de pression.According to a first example of application, said heat exchanger may be an internal exchanger of an air conditioning circuit. In other words, said first and second fluids may be a fluid known as R134a or R1234yf, among others, so that the first block 1 serves for the circulation of the fluid in a first state of temperature and pressure and the second block 2 serves for the circulation of the fluid in a second state of temperature and pressure.

Dans un autre exemple d'application, ledit échangeur assure un échange de chaleur entre ledit fluide réfrigérant et un liquide caloporteur, tel qu'un mélange d'eau et d'antigel, notamment de glycol. Selon l'état de fluide frigorigène, il pourra alors se produire un refroidissement ou un réchauffage du liquide caloporteur.In another example of application, said exchanger provides a heat exchange between said coolant and a coolant, such as a mixture of water and antifreeze, including glycol. Depending on the refrigerant state, it may then occur cooling or heating of the coolant.

D'autres applications sont cependant encore possibles.However, other applications are still possible.

Selon l'invention, lesdits blocs 1, 2 permettent une circulation du premier fluide évitant le second bloc 2 et une circulation du second fluide évitant le premier bloc 1. Autrement dit, l'échangeur est configuré pour que les blocs soient imbriqués l'un dans l'autre, ici tels deux peignes, sans que le premier fluide traverse de composants du second bloc 2 ni que le second fluide traverse de composants du premier bloc 1. On peut de la sorte obtenir un échange de chaleur entre les deux fluides tout en évitant les circulations plus complexes de l'état de l'art.According to the invention, said blocks 1, 2 allow a circulation of the first fluid avoiding the second block 2 and a circulation of the second fluid avoiding the first block 1. In other words, the exchanger is configured so that the blocks are nested one. in the other, here as two combs, without the first fluid passes through components of the second block 2 nor the second fluid passes through components of the first block 1. It can thus obtain a heat exchange between the two fluids while avoiding the more complex circulations of the state of the art.

Une telle imbrication se comprend mieux en observant les figures 5 et 6, en faisant abstraction des brides de fixation 100, 200 présentes sur ces figures. A la figure 5, on voit le premier bloc 1, servant ici à la circulation d'un fluide frigorigène.Such nesting is best understood by observing the Figures 5 and 6 , ignoring the fixing flanges 100, 200 present in these figures. To the figure 5 , we see the first block 1, used here for the circulation of a refrigerant.

A la figure 6, on voit le second bloc 2, servant ici à la circulation d'un fluide caloporteur. On comprend de la sorte que l'échangeur des figures 1 et 2 résulte de l'imbrication des blocs 1, 2 de chacune de ces figures.To the figure 6 , we see the second block 2, used here for the circulation of a heat transfer fluid. We understand in this way that the exchanger of figures 1 and 2 results from the nesting of the blocks 1, 2 of each of these figures.

En se reportant de nouveau aux figures 1 et 2, on constate que lesdites lames 3, 4 s'étendent selon une direction longitudinale L, perpendiculaire à la direction d'empilement D. Ledit premier bloc 1 comprend des collecteurs 5a, 5b pour le premier fluide, situés au niveau d'un bord d'extrémité longitudinale 7 des lames 3 dudit premier bloc 1. Ledit second bloc 2 comprend de son côté des collecteurs 6a, 6b pour le second fluide, situés au niveau d'un bord d'extrémité longitudinale 8 des lames 4 dudit second bloc 1.Referring back to figures 1 and 2 it is found that said blades 3, 4 extend in a longitudinal direction L, perpendicular to the stacking direction D. Said first block 1 comprises collectors 5a, 5b for the first fluid, located at an edge d longitudinal end 7 of the blades 3 of said first block 1. Said second block 2 comprises on its side collectors 6a, 6b for the second fluid, located at a longitudinal end edge 8 of the blades 4 of said second block 1.

Comme illustré par les flèches 1a, 1b, 1c et 2a, 2b, 2c évoquées plus haut, lesdites lames sont configurées ici pour faire faire un circuit en U audit fluide entre un premier 5a, 6a desdits collecteurs et un second 5b, 6b desdits collecteurs du bloc correspondant. Le premier 5a des collecteurs du premier bloc 1 constitue ainsi un collecteur d'entrée pour le premier fluide tandis que le second 5b des collecteurs dudit premier bloc 1 constitue un collecteur de sortie dudit premier fluide. De même, le premier 6a des collecteurs du second bloc 2 constitue un collecteur d'entrée pour le second fluide tandis que le second 6b des collecteurs dudit second bloc 2 constitue un collecteur de sortie dudit second fluide. Autrement dit, le premier fluide circule dans le premier bloc 1 en étant distribué par le collecteur d'entrée 5a dudit premier bloc 1 dans les lames 3 dudit premier bloc 1 où il suit le circuit 1a, 1b, 1c en U évoqué plus haut pour pénétrer ensuite dans le collecteur de sortie 5b correspondant. De même, le second fluide circule dans le second bloc 2 en étant distribué par le collecteur d'entrée 6a dudit second bloc 2 dans les lames 4 dudit second bloc 2 où il suit le circuit 2a, 2b, 2c en U évoqué plus haut pour pénétrer ensuite dans le collecteur de sortie 6b correspondant. La circulation du premier fluide dans les lames 3 dudit premier bloc 1 s'effectue à co-courant de la circulation du second fluide dans les lames 4 dudit second bloc 2.As illustrated by the arrows 1a, 1b, 1c and 2a, 2b, 2c mentioned above, said blades are configured here to make a U-shaped circuit to said fluid between a first 5a, 6a of said collectors and a second 5b, 6b said collectors the corresponding block. The first 5a of the collectors of the first block 1 thus constitutes an inlet manifold for the first fluid while the second 5b collectors of said first block 1 constitutes an outlet manifold of said first fluid. Similarly, the first 6a of the collectors of the second block 2 constitutes an inlet manifold for the second fluid while the second 6b collectors of said second block 2 constitutes an outlet manifold of said second fluid. In other words, the first fluid flows in the first block 1 being distributed by the inlet manifold 5a of said first block 1 in the blades 3 of said first block 1 where it follows the circuit 1a, 1b, 1c U referred above for then enter the corresponding outlet manifold 5b. Similarly, the second fluid circulates in the second block 2 being distributed by the inlet manifold 6a of said second block 2 in the blades 4 of said second block 2 where it follows the circuit 2a, 2b, 2c U referred above for then enter the corresponding output manifold 6b. The circulation of the first fluid in the blades 3 of said first block 1 is carried out at the co-current of the circulation of the second fluid in the blades 4 of said second block 2.

Dans une variante de réalisation (non représentée), la circulation du premier fluide dans les lames 3 dudit premier bloc 1 s'effectue avantageusement à contre-courant de la circulation du second fluide dans les lames 4 dudit second bloc 2.In an alternative embodiment (not shown), the circulation of the first fluid in the blades 3 of said first block 1 advantageously takes place against the flow of the second fluid in the blades 4 of said second block 2.

Pour la compacité de l'échangeur, les collecteurs 5a, 5b du premier bloc 1 sont situés, par exemple, en vis-à-vis d'un bord 10 d'extrémité longitudinal des lames du second bloc 2, opposé au bord 8 d'extrémité longitudinale des lames 2 du second blocs 2 au niveau duquel se trouvent lesdits collecteurs 6a, 6b du second bloc 2. De façon combinée ou non, les collecteurs 6a, 6b du second bloc 2 sont situés en vis-à-vis d'un bord 9 d'extrémité longitudinal des lames 3 du premier bloc 1, opposé au bord d'extrémité longitudinale 7 des lames 3 du premier bloc 1 au niveau duquel se trouvent lesdits collecteurs 5a, 5b du premier bloc 1.For the compactness of the exchanger, the collectors 5a, 5b of the first block 1 are situated, for example, opposite a longitudinal end edge 10 of the blades of the second block 2, opposite the edge 8 longitudinal end of the blades 2 of the second block 2 at which are said collectors 6a, 6b of the second block 2. Combined or not, the collectors 6a, 6b of the second block 2 are located vis-à-vis a longitudinal end edge 9 of the blades 3 of the first block 1, opposite the longitudinal end edge 7 of the blades 3 of the first block 1 at which are said collectors 5a, 5b of the first block 1.

Autrement dit, lesdits blocs 1, 2 sont montés tête-bêche. Encore autrement dit, les lames 3, 4 de chacun desdits blocs 1, 2 sont décalées par rapport aux lames 3, 4 de l'autre desdits blocs 1, 2 dans une direction orthogonale à ladite direction d'empilement D.In other words, said blocks 1, 2 are mounted head to tail. In other words, the blades 3, 4 of each of said blocks 1, 2 are offset with respect to the blades 3, 4 of the other of said blocks 1, 2 in a direction orthogonal to said stacking direction D.

Lesdits blocs 1, 2 comprennent des plaques 11, 12, empilées selon ladite direction d'empilement, lesdites plaques étant associées par paire pour définir lesdites lames 3, 4 et lesdits circuits 1a, 1b, 1c, 2a, 2b, 2c de circulation pour chacun des fluides.Said blocks 1, 2 comprise plates 11, 12, stacked in said stacking direction, said plates being associated in pairs to define said blades 3, 4 and said circulation circuits 1a, 1b, 1c, 2a, 2b, 2c for each of the fluids.

Les paires de plaques 11 pour le premier fluide présentent une partie en saillie 13 des paires de plaques 12 pour le second fluide, dans des plans orthogonaux à ladite direction d'empilement de façon à pouvoir libérer une zone desdites plaques, dites tête plaques, accueillant lesdits collecteurs 5a, 5b dudit premier bloc 1. De même, les paires de plaques 12 pour le second fluide présentent une partie en saillie 14 des paires de plaques 11 pour le premier fluide, dans des plans orthogonaux à ladite direction d'empilement de façon à pouvoir libérer une zone desdites plaques, dites tête plaques, accueillant lesdits collecteurs 6a, 6b dudit second bloc 2.The pairs of plates 11 for the first fluid have a projecting portion 13 of the pairs of plates 12 for the second fluid, in planes orthogonal to said stacking direction so as to release a zone of said plates, said head plates, accommodating said collectors 5a, 5b of said first block 1. Similarly, the pairs of plates 12 for the second fluid have a projecting portion 14 of the pairs of plates 11 for the first fluid, in planes orthogonal to said stacking direction of to be able to release a zone of said plates, said head plates, accommodating said collectors 6a, 6b of said second block 2.

Autrement dit, on fait communiquer lesdites paires de plaques 11 pour le premier fluide entre elles sans passer à travers les paires de plaques 12 pour le second fluide, et inversement. Encore autrement dit, lesdites paires de plaques 11 du premier bloc 1 sont décalées par rapport aux paires de plaques 12 du second bloc 2, selon ladite direction longitudinale, et inversement.In other words, said pairs of plates 11 are made to communicate for the first fluid between them without passing through the pairs of plates 12 for the second fluid, and vice versa. In other words, said pairs of plates 11 of the first block 1 are offset with respect to the pairs of plates 12 of the second block 2, in said longitudinal direction, and vice versa.

Lesdites paires de plaques 11, 12 sont avantageusement identiques entre elles dans le même bloc, sauf éventuellement pour la ou les paires de plaques comportant une plaque terminale de l'empilement, comme cela sera détaillé plus loin.Said pairs of plates 11, 12 are advantageously identical to each other in the same block, except possibly for the pair or pairs of plates comprising an end plate of the stack, as will be detailed below.

Ledit échangeur comprend des liaisons 15a, 15b, 16a, 16b de fluide entre les plaques 11, 12 des paires de plaques d'un même fluide, situées au niveau desdites têtes de plaques 13, 14, de manière à former lesdits collecteurs 5a, 5b, 6a, 6b. Conformément à l'invention, lesdites liaisons 15a, 15b, 16a, 16b pour l'un des fluides sont situées extérieurement aux paires de plaques 11, 12 pour l'autre fluide.Said heat exchanger comprises connections 15a, 15b, 16a, 16b of fluid between the plates 11, 12 of the pairs of plates of the same fluid, located at said plate heads 13, 14, so as to form said collectors 5a, 5b , 6a, 6b. According to the invention, said links 15a, 15b, 16a, 16b for one of the fluids are located externally to the pairs of plates 11, 12 for the other fluid.

Lesdites liaisons de fluide 15a, 15b, 16a, 16b comprennent, par exemple, des emboutis issus desdites plaques 11, 12. Lesdits emboutis 15a, 15b des plaques 11 du premier bloc 1 viennent ici au contact des emboutis 15a, 15b de la plaque 11 en vis-à-vis de la paire voisine de plaques 11 dudit premier bloc 1. De même, lesdits emboutis 16a, 16b des plaques 12 du second bloc 2 viennent ici au contact des emboutis 16a, 16b de la plaque 12 en vis-à-vis de la paire voisine de plaques 12 dudit second bloc 1. Lesdits emboutis sont munis d'orifice de passage de fluide. Lesdits emboutis 15a, 15b, 16a, 16b réalisent de la sorte la circulation de fluide d'une paire de plaques à l'autre, dans le même bloc. Lesdits emboutis 15a, 15b, 16a, 16b d'un même collecteur 5a, 5b, 6a, 6b sont ici situés dans le prolongement axiale les uns des autres de façon à ce que lesdits collecteurs soient sensiblement rectilignes. Conformément à l'invention, les emboutis des paires de plaques pour la circulation du premier fluide et les emboutis des paires de plaques pour la circulation du second fluide sont situés à deux extrémités longitudinales opposées de l'assemblage formé par les deux blocs 1, 2.Said fluid connections 15a, 15b, 16a, 16b comprise, for example, stampings from said plates 11, 12. The said stampings 15a, 15b of the plates 11 of the first block 1 come here in contact with the stampings 15a, 15b of the plate 11 against the neighboring pair of plates 11 of said first block 1. Likewise, said stampings 16a, 16b of the plates 12 of the second block 2 come here in contact with the stampings 16a, 16b of the plate 12 vis-à-vis -vis the adjacent pair of plates 12 of said second block 1. The said stamps are provided with fluid passage opening. The said stampings 15a, 15b, 16a, 16b thus effect the circulation of fluid from one pair of plates to the other, in the same block. The said stampings 15a, 15b, 16a, 16b of the same manifold 5a, 5b, 6a, 6b are here located in the axial extension of each other so that said collectors be substantially rectilinear. According to the invention, the stampings of the pairs of plates for the circulation of the first fluid and the stampings of the pairs of plates for the circulation of the second fluid are located at two opposite longitudinal ends of the assembly formed by the two blocks 1, 2 .

Lesdites plaques 11, 12 comprennent un bord d'extrémité longitudinal 17, 18, dit distal, opposé à un bord d'extrémité longitudinal 19, 20 opposé desdites plaques au niveau duquel sont situés lesdites liaisons de fluide 15a, 15b, 16a, 16b. Ledit bord distal 17, 18 des plaques 11, 12 de l'un des fluides est situé entre deux plaques 11, 12 en vis-à-vis de deux paires voisines de plaques pour la circulation de l'autre fluide.Said plates 11, 12 comprise a longitudinal end edge 17, 18, said distal, opposite a longitudinal end edge 19, 20 opposite said plates at which are located said fluid connections 15a, 15b, 16a, 16b. Said distal edge 17, 18 of the plates 11, 12 of one of the fluids is located between two plates 11, 12 opposite two adjacent pairs of plates for the circulation of the other fluid.

Ledit bord distal 17, 18 des plaques 11, 12 de l'un des blocs 1, 2 est à proximité desdites liaisons de fluide 15a, 15b, 16a, 16b de l'autre bloc. Pour assurer une bonne stabilité mécanique, ledit bord distal 17, 18 épouse une partie du contour desdites liaisons de fluide 15a, 15b, 16a, 16b.Said distal edge 17, 18 of the plates 11, 12 of one of the blocks 1, 2 is close to said fluid connections 15a, 15b, 16a, 16b of the other block. To ensure good mechanical stability, said distal edge 17, 18 conforms to a portion of the contour of said fluid links 15a, 15b, 16a, 16b.

Comme cela apparaît mieux aux figures 3 et 4, lesdites plaques 11, 12 de chacune des blocs 1, 2 comprennent un fond 21, 22, un bord relevé 23, 24 et une lèvre de brasage 25, 26. Lesdites paire de plaques sont formés par deux desdites plaques, prévues identiques, montées tête-bêche de façon à ce que leur lèvre soient en contact. Le long du bord distal 17, 18 desdites plaques 11, 12, la lèvre de brasage 25, 26 des plaques de l'un des blocs 1, 2 est en contact avec les emboutis 15a, 15b, 16a, 16b des plaques de l'autre bloc 1, 2. Lesdites plaques du premier et/ou du second bloc pourront encore comprendre des butées 32 (figure 1) s'étendant à partir desdites lèvres de brasage 26, notamment pour faciliter l'empilement desdites plaques avant brasage.As it appears better to figures 3 and 4 said plates 11, 12 of each of the blocks 1, 2 comprise a bottom 21, 22, a raised edge 23, 24 and a brazing lip 25, 26. Said pair of plates are formed by two of said plates, provided identical, mounted head to tail so that their lips are in contact. Along the distal edge 17, 18 of said plates 11, 12, the brazing lip 25, 26 of the plates of one of the blocks 1, 2 is in contact with the stampings 15a, 15b, 16a, 16b of the plates of the other block 1, 2. said plates of the first and / or second block may further comprise stops 32 ( figure 1 ) extending from said solder lips 26, in particular to facilitate the stacking of said plates before soldering.

Chacune desdites paires de plaques 11, 12 comprend un conduit pour la circulation en U du fluide correspondant, entre un premier desdits collecteurs 5a, 6a permettant une introduction dudit fluide dans ledit conduit et un second desdits collecteurs 5b, 6b permettant une sortie dudit fluide hors dudit conduit.Each of said pairs of plates 11, 12 comprises a duct for the U circulation of the corresponding fluid, between a first of said collectors 5a, 6a allowing an introduction of said fluid into said duct and a second of said collectors 5b, 6b allowing an output of said fluid out said conduit.

Lesdites lames 11, 12 comprennent un perturbateur 27, 28 de l'écoulement du premier et/ou du second fluide. Ici, lesdits perturbateurs définissent des canaux longitudinaux de circulation du premier et/ou du second fluide.Said blades 11, 12 comprise an interferer 27, 28 of the flow of the first and / or second fluid. Here, said disruptors define longitudinal channels for circulation of the first and / or second fluid.

Selon une variante non-illustrée, la circulation en U recherchée est obtenue par une forme emboutie du fond des plaques telle une nervure partielle centrale partant de bords d'extrémité longitudinale muni des embouties de liaison.According to a non-illustrated variant, the desired U-shaped circulation is obtained by a stamped form of the bottom of the plates such as a central partial rib starting from longitudinal end edges provided with connecting pieces.

Selon une autre variante, correspondant à l'échangeur illustré, les collecteurs d'entrée 5a, 6a débouchent en vis-à-vis de première parties de canaux des perturbateurs 27, 28 tandis que les collecteurs de sortie débouchent en vis-à-vis d'une seconde partie des canaux séparée de ladite première partie des canaux 29, 30 par un ou plusieurs canaux centraux 29, 30. En outre, lesdites plaques 11, 12 comprennent des emboutis de blocage 31, 32, entre les emboutis de liaison 15a, 15b, 16a, 16b, fermant le ou lesdits canaux centraux 29, 30 à l'une de leur extrémités longitudinales.According to another variant, corresponding to the exchanger illustrated, the inlet manifolds 5a, 6a open opposite the first channel portions of the disrupters 27, 28 while the outlet manifolds open vis-à-vis a second part of the channels separated from said first part of the channels 29, 30 by one or more central channels 29, 30. In addition, said plates 11, 12 comprise locking stampings 31, 32, between the connecting pieces 15a , 15b, 16a, 16b, closing the one or more central channels 29, 30 at one of their longitudinal ends.

Lesdites perturbateurs 27, 28 sont avantageusement plus court que le fond 21, 22 desdites plaques 11, 12 pour définir une zone de demi-tour pour les fluides dans chacune des paires de plaques.Said disruptors 27, 28 are advantageously shorter than the bottom 21, 22 of said plates 11, 12 to define a turning zone for the fluids in each of the pairs of plates.

Si l'on se reporte de nouveau à la figure 2, on constate que le second bloc 2 comprend au moins une paire de plaques 12a, 12b terminales, selon ladite direction d'empilement D. Ladite paire de plaques 12a, 12b terminale comprend ici une plaque 12a, présentant une extension longitudinale identique aux autres plaques dudit second bloc 2 et une plaque 12b de terminaison présentant une extension longitudinale supérieure.If we go back to the figure 2 , it is found that the second block 2 comprises at least one pair of plates 12a, 12b end, in said stacking direction D. Said pair of plates 12a, 12b terminal here comprises a plate 12a, having a longitudinal extension identical to the other plates said second block 2 and a terminal plate 12b having an upper longitudinal extension.

La plaque 12b de terminaison supérieure, selon l'orientation donnée à l'échangeur à cette figure, comprend une partie en saillie 34 muni d'orifices, non-visibles, pour le passage du premier fluide. Lesdits orifices viennent en correspondance des collecteurs 5a, 5b du premier bloc 1. Ladite plaque 12b de terminaison supérieure pourra par ailleurs présenter des orifices, également non-visibles, pour le passage du second fluide vers les collecteurs 6a, 6b correspondant. Ledit échangeur comprend alors une ou des brides de connexion 36, 38 pour l'un et l'autre des fluides, assujettie à ladite plaque de terminaison 12b au niveau desdits orifices de passage. Autrement dit, ledit second bloc 2 comprend ici non seulement la ou les brides 38 de connexion pour le second fluide mais encore la bride 36 de connexion pour le premier fluide.The plate 12b of upper termination, according to the orientation given to the exchanger in this figure, comprises a projecting portion 34 provided with orifices, non-visible, for the passage of the first fluid. Said holes come in correspondence of the collectors 5a, 5b of the first block 1. Said upper termination plate 12b may also have orifices, also non-visible, for the passage of the second fluid to the corresponding collectors 6a, 6b. Said exchanger then comprises one or more connection flanges 36, 38 for one and the other fluids, secured to said terminal plate 12b at said passage orifices. In other words, said second block 2 here comprises not only the connection flange (s) 38 for the second fluid but also the connection flange 36 for the first fluid.

Selon une variante correspondant aux blocs illustrés aux figures 5 et 6, chacun desdits blocs pourra comprendre sa propre bride de connexion 100, 200, comme déjà évoquée, venant respectivement en vis-à-vis des collecteurs 5a, 5b, 6a, 6b correspondant. Ladite paire de plaques terminale supérieure de chacun des blocs 1, 2 est alors identique aux paires de plaques non-terminales.According to a variant corresponding to the blocks illustrated in Figures 5 and 6 , each of said blocks may comprise its own connection flange 100, 200, as already mentioned, coming respectively vis-à-vis the collectors 5a, 5b, 6a, 6b corresponding. Said pair of upper terminal plates of each of the blocks 1, 2 is then identical to the pairs of non-terminal plates.

Dans l'un et/ou l'autre de ces modes de réalisation, la plaque 12b de terminaison inférieure, toujours selon l'orientation de la figure 2, du second bloc 2 pourra comprendre une partie en saillie 40, munie d'emboutis 42 venant en contact d'une partie de fond des collecteurs 5a, 5b du premier bloc 1.In one and / or both of these embodiments, the lower termination plate 12b, still in the orientation of the figure 2 , the second block 2 may comprise a projecting portion 40, provided with stampings 42 coming into contact with a bottom portion of the collectors 5a, 5b of the first block 1.

Les figures 5, 6 illustrent un bloc d'échangeur 1, 2 tel que décrit plus haut, éventuellement muni d'une bride de connexion 100, 200 correspondante.The Figures 5, 6 illustrate an exchanger block 1, 2 as described above, possibly provided with a corresponding connection flange 100, 200.

Comme il ressort de ce qui a été dit précédemment, le ou lesdits blocs sont configurés de façon à pouvoir s'insérer dans un bloc de même configuration, avec ou sans même hauteur de lames 3, 4, en présentant un espace 101, 102, ouvert entre lesdites paires de lames 3, 4, au niveau de bords d'extrémité longitudinale 7, 8 desdites lames.As is apparent from what has been said above, the block or blocks are configured so as to fit into a block of the same configuration, with or without the same height of blades 3, 4, having a space 101, 102, open between said pairs of blades 3, 4 at longitudinal end edges 7, 8 of said blades.

Lesdits blocs 1, 2 pourront être utilisés selon la configuration imbriquée déjà décrite ou dans d'autres configurations, par exemple sous la forme, non-illustrée, d'un échangeur comprenant un boîtier de circulation d'un autre fluide et un tel bloc, placé dans ledit boîtier, de façon à bénéficier d'un échange de chaleur entre ledit autre fluide et celui circulant dans ledit bloc.Said blocks 1, 2 may be used according to the nested configuration already described or in other configurations, for example in the form, not illustrated, of an exchanger comprising a flow box of another fluid and such a block, placed in said housing, so as to benefit from a heat exchange between said other fluid and that flowing in said block.

Comme illustré à la figure 7 pour le premier bloc 1, le ou lesdits blocs pourront être munis d'un intercalaire 110 entre lesdites paires de plaques 11. Ils pourront alors servir, notamment d'échangeurs sur l'air tels que des évaporateurs.As illustrated in figure 7 for the first block 1, the block or blocks may be provided with a spacer 110 between said pairs of plates 11. They can then be used, including exchangers on the air such as evaporators.

Claims (6)

  1. Heat exchanger, in particular for a refrigerant circulating in a motor vehicle, said exchanger comprising a first unit (1) for circulating a first fluid defining first blades (3) for circulating said first fluid and a second unit (2) for circulating a second fluid defining second blades (4) for circulating said second fluid, said blades (3, 4) being layered in a stacking direction of said blades such that an exchange of heat can take place between said first and second fluids, said units (1, 2) permitting the first fluid to circulate while avoiding the second unit (2), and permitting the second fluid to circulate while avoiding the first unit (1), said blades (3, 4) extending in a longitudinal direction, perpendicular to the stacking direction, and said first unit (1) comprising collectors (5a, 5b) for the first fluid, situated in the area of a longitudinal end edge (7) of the blades (3) of said first unit (1), and/or said second unit (2) comprising collectors (6a, 6b) for the second fluid, situated in the area of a longitudinal end edge (8) of the blades (4) of said second unit (2), said units (1, 2) comprising plates (11, 12), stacked in said stacking direction, said plates (11, 12) being paired in order to define said circulation blades (3,4), for each of the fluids, said plates (11, 12) of each of the units (1, 2) comprising a base (21,22), a raised edge (23,24) and a brazing lip (25, 26), the pairs of plates (11, 12) for each of the fluids exhibiting a part (13, 14) protruding from the pairs of plates for the other fluid, in planes that are orthogonal to said stacking direction, in such a way as to be able to free up a zone of said plates, referred to as header plates, for receiving said collectors (5a, 5b, 6a, 6b), the heat exchanger comprising fluid connections (15a, 15b, 16a, 16b) between the plates of the pairs of plates (11, 12) for a same fluid, situated in the area of said header plates, in such a way as to form said collectors (5a, 5b, 6a, 6b), said connections (15a, 15b, 16a, 16b) being situated externally to the pairs of plates (11, 12) for said other fluid, said plates (11, 12) comprising a longitudinal end edge (17, 18), referred to as the distal edge, opposite an opposing longitudinal end edge (19, 20) of said plates, in the area of which said fluid connections (15a, 15b, 16a, 16b) are situated, said distal edge (17, 18) being situated between two plates facing two neighboring pairs of plates for the circulation of the other fluid, characterised in that said blades (3, 4) comprise a baffle (27, 28) for the flow of the first and of the second fluid, and in that said distal edge (17, 18) includes a part of the contour of said fluid connections (15a, 15b, 16a, 16b).
  2. Heat exchanger according to Claim 1, in which the collectors (5a, 5b) of the first unit (1) are situated facing a longitudinal end edge (10) of the blades (4) of the second unit (2), opposite the longitudinal end edge (8) of the blades (4) of the second unit (2), in the area of which said collectors (6a, 6b) of the second unit (2) are present, and/or the collectors (6a, 6b) of the second unit (2) are situated facing a longitudinal end edge (9) of the blades of the first unit (1), opposite the longitudinal end edge (7) of the blades (3) of the first unit (1), in the area of which said collectors (5a, 5b) of the first unit (1) are present.
  3. Exchanger according to either of preceding claims, in which said fluid connections (15a, 15b, 16a, 16b) comprise stamped end fittings emerging from said plates (11, 12), said stamped end fittings coming into contact with the stamped end fittings of the plate facing the neighboring pair of plates for the circulation of the same fluid.
  4. Exchanger according to any one of the preceding claims, in which said distal edge (17, 18) of the plates (11, 12) of one of the units (1, 2) is in proximity to said fluid connections (15a, 15b, 16a, 16b) of the other unit (1, 2).
  5. Exchanger according to any one of the preceding claims, in which the second unit (2) comprises at least one pair of terminating plates (12a, 12b), in said stacking direction, comprising a plate (12a) exhibiting a longitudinal extension that is identical with the other plates of said unit and a terminating plate (12b) exhibiting an upper longitudinal extension.
  6. Exchanger according to Claim 5, in which said second unit (2) comprises at least one connecting flange (36, 38) for one of the fluids that is subject to said terminating plate (12b).
EP13803018.4A 2012-12-21 2013-12-12 Heat exchanger, in particular for a refrigerant circulating in a motor vehicle Active EP2936027B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1262627A FR3000187B1 (en) 2012-12-21 2012-12-21 HEAT EXCHANGER, PARTICULARLY FOR REFRIGERANT FLUID CIRCULATING IN A MOTOR VEHICLE
PCT/EP2013/076396 WO2014095572A1 (en) 2012-12-21 2013-12-12 Heat exchanger, in particular for a refrigerant circulating in a motor vehicle

Publications (2)

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EP2936027A1 EP2936027A1 (en) 2015-10-28
EP2936027B1 true EP2936027B1 (en) 2019-10-30

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US (1) US20150354899A1 (en)
EP (1) EP2936027B1 (en)
CN (1) CN104995472B (en)
FR (1) FR3000187B1 (en)
WO (1) WO2014095572A1 (en)

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Publication number Priority date Publication date Assignee Title
KR101886075B1 (en) * 2012-10-26 2018-08-07 현대자동차 주식회사 Heat exchanger for vehicle
CN104833245A (en) * 2015-05-21 2015-08-12 上海利策科技股份有限公司 Multi-path micro-hole heat exchanger
JP6671170B2 (en) * 2015-12-28 2020-03-25 株式会社マーレ フィルターシステムズ Heat exchanger
IT201700113260A1 (en) * 2017-10-09 2019-04-09 Zilmet S P A COMPACT EXCHANGER GROUP WITH MULTIPLE CIRCUITS
IT201700122805A1 (en) * 2017-10-27 2019-04-27 Zilmet S P A "HIU" TYPE COMPACT THERMAL CONTROL UNIT
KR102601565B1 (en) * 2018-12-14 2023-11-14 삼성전자주식회사 Heat exchanger and air conditioner having the same

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FR2728666A1 (en) * 1994-12-26 1996-06-28 Valeo Thermique Habitacle HEAT EXCHANGER WITH THREE REDUCED BULK FLUIDS

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FR2728666A1 (en) * 1994-12-26 1996-06-28 Valeo Thermique Habitacle HEAT EXCHANGER WITH THREE REDUCED BULK FLUIDS

Also Published As

Publication number Publication date
FR3000187B1 (en) 2019-08-16
EP2936027A1 (en) 2015-10-28
CN104995472A (en) 2015-10-21
FR3000187A1 (en) 2014-06-27
CN104995472B (en) 2017-08-04
WO2014095572A1 (en) 2014-06-26
US20150354899A1 (en) 2015-12-10

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