WO2013050396A1 - Plate for a heat exchanger and heat exchanger equipped with such plates - Google Patents

Plate for a heat exchanger and heat exchanger equipped with such plates Download PDF

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Publication number
WO2013050396A1
WO2013050396A1 PCT/EP2012/069504 EP2012069504W WO2013050396A1 WO 2013050396 A1 WO2013050396 A1 WO 2013050396A1 EP 2012069504 W EP2012069504 W EP 2012069504W WO 2013050396 A1 WO2013050396 A1 WO 2013050396A1
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WO
WIPO (PCT)
Prior art keywords
pass
plate
plates
fluid
passage section
Prior art date
Application number
PCT/EP2012/069504
Other languages
French (fr)
Inventor
Nicolas Vallee
Yoann Naudin
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 CN201280059742.0A priority Critical patent/CN103988042A/en
Priority to EP12769647.4A priority patent/EP2764314A1/en
Priority to KR1020147011761A priority patent/KR20140089529A/en
Priority to US14/349,474 priority patent/US20140246179A1/en
Publication of WO2013050396A1 publication Critical patent/WO2013050396A1/en

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F3/00—Plate-like or laminated elements; Assemblies of plate-like or laminated elements
    • F28F3/12—Elements constructed in the shape of a hollow panel, e.g. with channels
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F13/00—Arrangements for modifying heat-transfer, e.g. increasing, decreasing
    • F28F13/06—Arrangements for modifying heat-transfer, e.g. increasing, decreasing by affecting the pattern of flow of the heat-exchange media
    • F28F13/08—Arrangements for modifying heat-transfer, e.g. increasing, decreasing by affecting the pattern of flow of the heat-exchange media by varying the cross-section of the flow channels
    • 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
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
    • F28D2021/0019—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for
    • F28D2021/008—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for for vehicles
    • F28D2021/0082—Charged air coolers

Definitions

  • the invention relates to plates for heat exchangers and to plate heat exchangers, in particular for motor vehicles.
  • Stacked plate charge air coolers are known, as mentioned above, in which each plate guides the cooling liquid in a circuit forming several passes of identical section and inside which the coolant circulates according to a orthogonal direction to the supercharging air flow. Between each pass, the coolant changes direction of flow. While traveling through the circuit, the temperature of the coolant increases, which causes a variation of its physical properties (in particular its density, its viscosity). However, when the physical properties of the coolant change, the pressure drop also changes. In existing solutions, the widths of the passes are identical within the same circuit and does not adapt to the evolution of the pressure losses mentioned above, which has the effect of degrading the performance of the exchanger.
  • the pressure losses can indeed contribute positively to the heat efficiency of the exchanger because it is known that the greater the pressure loss, the more the flow flow can be turbulent mode, which is favorable to heat exchange, at least to a certain extent.
  • the pumps used for the circulation of coolant have limited characteristics, in order to avoid too much penalize the energy consumption taken from the engine of the vehicle.
  • the invention thus relates to a plate intended to allow a heat exchange between a first and a second fluid flowing in contact with the plate, said plate being configured to define a circuit comprising several successive passes in which the first fluid flows in one direction. flow by changing flow direction from one pass to another, each of the passes having a passage section of the first fluid.
  • the passage section of a pass is larger than the passage section of another pass, called downstream, located downstream of the upstream pass in the direction of flow of the first fluid. in the circuit.
  • the first fluid circulates through passes whose passage section decreases which has the effect of accompanying the change in pressure losses due to the increase in temperature.
  • the coefficient of pressure loss can then be kept relatively constant along the circuit.
  • the first fluid corresponds to a coolant and the second fluid corresponds to the charge air.
  • said plate comprises an initial pass and a final pass and the pass passage sections decrease by one pass. the other since the initial pass to the final pass. They decrease, for example, linearly or proportionally.
  • the passage section of the initial pass is between 40 and 60% larger than the passage section of the final pass.
  • said plate comprises four passes, said first pass, second pass, third pass and fourth pass, the first pass being connected to an input of the circuit, the second pass being connected to the first pass, the third pass being connected to the second pass and the fourth pass being connected on the one hand to the third pass and on the other hand to an output of the circuit.
  • the passage section then decreases from the first pass until the fourth pass.
  • the passage section of the first pass is between 5 and 15% larger than the passage section of the second pass.
  • the passage section of the second pass is between 20 and 40% larger than the passage section of the third pass.
  • the passage section of the third pass is between 5 and 15% larger than the passage section of the fourth pass.
  • the distance between edges defining the first pass is between 30 and 35 mm
  • the distance between edges defining the second pass is between 27 and 32 mm
  • the distance between edges defining the third pass is between between 22 and 25 mm and / or the distance between edges defining the fourth pass is between 20 and 23 mm.
  • the borders defining a pass are, in particular, parallel to each other so that the passage section of a pass is constant.
  • the passage section is measured in a plane perpendicular to an extension plane of the plate.
  • the passes comprise disruptors of the fluid flow.
  • the invention also relates to a heat exchanger, in particular intended for a motor vehicle, comprising plates as defined above, at least two of said plates being stacked one on the other in a pair of plates so that the circuit one of the two plates mirrors the circuit of the other of the two plates. It is understood here that two plates forming a pair of plates are stacked one on the other so that their circuit together form a circulation channel of the first fluid.
  • FIG. 1 is a perspective view exploding exploded heat exchanger according to the invention comprising four-pass plates;
  • FIG. 2 is a top view of a plate comprising four passes, for identifying the differences of sections of passages of the different passes according to the invention.
  • the invention relates to a heat exchanger 1 allowing a heat exchange between a fluid to be cooled, in particular a gas G, and a coolant C. It could be a cooler of supercharging air in which a flow of compressed air for supplying a heat engine, for example a motor vehicle engine, is cooled by a coolant, especially a mixture of water and glycol.
  • the exchanger 1 comprises a heat exchange beam 2 consisting of a stack of plates 4 between them determining alternating circuits 6, 8 for the fluid to be cooled and for the cooling liquid.
  • the beam here is of generally parallelepipedal shape and has an exit face 10 and a face opposite inlet, not visible, the fluid to be cooled. It is completed on both sides of the stack of a plate, said upper, 12 and a plate, said lower, 14.
  • the exchanger 1 may also include a housing 5 in which the beam 2 is located. It guides the fluid to be cooled between the plates of the inlet face to the exit face 10 of the bundle 2. It consists here of two lateral walls 18, each coming against the edges 16, 16 'of the side plates 4, 12 14, of an upper wall 20, coming into contact with the upper plate 12 and a lower wall 22, coming into contact with the lower plate 14.
  • the upper wall 20 may be provided with orifices 24, 26 allowing the passage, at the outlet and at the inlet, of the coolant C in the bundle 2.
  • the exchanger 1 may further comprise nozzles 28, 30 for outlet and / or inlet of the cooling liquid communicating with said orifices 24, 26 provided in the housing.
  • the various components of the exchanger are, for example, aluminum or aluminum alloy. They are, in particular, soldered to each other.
  • Each plate 4, 12, 14 comprises, for example, a bottom 31, substantially plane, surrounded by a peripheral edge 32 terminated by a flat portion 34, for brazing the plates together.
  • the coolant circuit 8 is defined, on the one hand, by said peripheral rim 32 and, on the other hand, by one or more edges 60, 60 ', for example made from material of the bottom 31 of the plate.
  • the plates 4, 12, 14 are grouped in pairs and assembled by their flats 34 and / or the edges 60, 60 '.
  • the circuit of an upper plate 4 and a lower plate 4 of the same pair of plates complement each other to form a circulation channel for the coolant C.
  • the plates 4 are stacked in pairs so that the coolant circuit C 8 of one of the two plates is vis-à-vis the coolant circuit 8 C of the other of the two plates of the same pair to form the circulation channel coolant C.
  • Circuits 6 for circulation fluid to be cooled are provided between two plates 4 vis-à-vis two pairs of adjacent plates 4.
  • top 12 and bottom 14 plates of the stack are assembled with the top and bottom walls 22 of the housing to define a coolant flow channel.
  • the plates 4, 12, 14 have, for example, the general shape of an elongated rectangle having two long sides and two short sides, each plate having two bosses 38, a first of the bosses 38 having an inlet 42 of the circulation channel 8 coolant C and the other bosses 38 having an outlet 40 of the coolant circulation channel C.
  • the bosses 38 are located along the same small side of the plate 4, 12, 14. They are here pierced with a hole 50 for the passage of coolant C and are intended to come into contact with the bosses 38 of the an adjacent plate 4 for respectively forming an inlet manifold 44, and an outlet manifold, not visible, for the coolant C.
  • the inlet manifold 44 opens, for example, into the inlet manifold 30 through the inlet port 26 of the housing and / or the outlet manifold opens, for example, into the outlet pipe 28 through the outlet 24 of the housing.
  • the cooling fluid enters the beam through the inlet pipe 30 and is distributed between the plates 4 in the circuits 8 for circulating coolant through the inlet manifold 44. It flows into the circuits 8 flow of coolant C from their inputs 42 to their outputs 40 where it enters the outlet manifold. It then leaves the exchanger through the outlet pipe 30.
  • the bosses 38 of two pairs of plates 4 between them determine the height of the circulating circuits 6 for the fluid to be cooled.
  • An inlet manifold and an outlet manifold may be adapted to the periphery of the housing to bring and evacuate the fluid to be cooled.
  • the exchanger may also comprise secondary exchange surfaces, for example corrugated disturbers reported between the plates 4 in the circulation circuits 6 of the fluid to be cooled G. These disrupters can disrupt the flow of the fluid to be cooled G to improve the heat exchange between the two fluids.
  • Each plate 4, 12, 14 for example comprises corrugations 52 arranged in the circuits 8 for circulating coolant C. These corrugations 52 extend between the pockets 38 constituting the inlet manifold and the outlet manifold 44 of the liquid C and the second longitudinal end of the plates 4, 12, 14.
  • the corrugations 52 are, for example, derived from the bottom material 31 of the plates 4, 12, 14, in particular by stamping the plates 4, 12, 14.
  • the circuit 8 defined by the plates 4, 12, 14 makes it possible to guide the cooling liquid C in a number n of successive passes, here four, in which the liquid flows between the inlet 42 and the outlet 40 of the circuit 8. Two adjacent passes are separated, for example, by the borders 32, 60, 60 'of the plates 4, 12, 14.
  • the passes are arranged parallel to each other in an extension direction, here the long side of the plates. They may be provided in series one after the other.
  • the borders 60, 60 ' are thus oriented along the long side of the plates 4 to define a cooling coil circulation in each of the passes of each of the circulation circuits 8 of the cooling liquid C.
  • Some 60 of the borders extend from the edge 16 provided with the bosses 38 to the opposite edge 16 'while leaving a passage so that the fluid can flow from the pass located from one side of the edge 60 to the other passes. They alternate with borders 60 'extending from the edge 16' opposite that 16 provided with the bosses 38 to the edge 1 6 provided with the bosses 38 while leaving a passage for the fluid to flow from the pass located on one side of the edge 60 'to another.
  • first pass 71 or initial pass 71, extending from the inlet 40 to the edge 16 'opposite to that 1 6 provided with bosses 38; a second pass 72 connected to the first and extending from the edge 1 'opposed to the edge 16 provided with the bosses 38 to the edge 1 6 provided with the bosses 38; a third pass 73 connected to the second pass and extending from the edge 1 6 provided with the bosses 38 to the edge 1 6 'opposite that 1 6 provided with the bosses 38; and a fourth pass 74 connected on the one hand to the third pass 73 and on the other hand to the outlet 42 so that it extends from the edge 16 'opposite the edge 16 provided with the bosses 38 to the edge 1 6 provided with the bosses 38.
  • a plate according to the invention is shown in Figure 2.
  • Such a plate has a length L in the direction of extension of the passes and a width I in a direction D orthogonal to the direction of extension of the passes.
  • the direction D thus corresponds to the direction of flow of the fluid to be cooled.
  • each pass has a width In corresponding to the distance along the direction D between two edges 32, 60, 60 'defining this pass.
  • the first pass 71 has a width 11, the second passes 72 a width 12, the third passes a width 13 and the fourth passes 74 a width 14.
  • the passage section of a pass is larger than the passage section of another pass, called downstream, located downstream of the upstream pass in the direction of flow of the liquid of cooling in the circuit 8 for circulation of the coolant.
  • the section of passage of a pass is defined by its width multiplied by the height of the borders 32, 60, 60 'which define it.
  • the borders 32, 60, 60 ' being here substantially parallel to each other and of identical height, the comparison of the widths of passes is equivalent in the following description to a comparison of the passage sections of each pass.
  • the width of the first pass 71 is between 5 and 15% larger than the width 1 2 of the second pass 72.
  • the width l 2 of the second pass is here between 20 and 40% greater than the width l 3 of the third pass 73.
  • the width l 3 of the third pass 73 is for example between 5 and 15% greater than the width l 4 of the fourth pass 74.
  • the width of the initial pass, here the first pass 71, is between 40 and 60% greater than the width of the final pass, here the fourth pass 74.
  • the plate width I of the plate 4, 12, 14 is, in particular, equal to 120 mm and its length L is, for example, equal to 200 mm.
  • the width of the first pass 71 is in particular between 30 and 35 mm
  • the width 1 2 of the second pass 72 is, for example, between 27 and 32 mm
  • the width l 3 of the third pass 73 is in particular between 22 and 25 mm
  • the width l 4 of the fourth pass 74 is advantageously between 20 and 23 mm.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)

Abstract

The invention relates to a plate (4, 12, 14) intended to allow an exchange of heat between a first fluid and a second fluid flowing in contact with the plate (4, 12, 14). The plate (4, 12, 14) is configured to define a circuit (8) comprising a plurality of successive passes (71, 72, 73, 74), in which the first fluid flows in one flow direction, changing flow direction from one pass to the next, each of said passes (71, 72, 73, 74) having a flow section for the first fluid. According to the invention, the flow section of one pass (71, 72, 73, 74), known as the upstream pass, is larger than the flow section of another pass (71, 72, 73, 74), known as the downstream pass, which is located downstream of the upstream pass in the direction of flow of the first fluid in the circuit (8). The invention also relates to a heat exchanger equipped with such plates.

Description

Plaque pour échanqeur de chaleur et échanqeur de chaleur muni de telles plaques  Plate for heat exchanger and heat exchanger equipped with such plates
L'invention se rapporte aux plaques pour échangeurs de chaleur et aux échangeurs de chaleur à plaques, notamment pour véhicules automobiles. The invention relates to plates for heat exchangers and to plate heat exchangers, in particular for motor vehicles.
Dans ce domaine, il est connu des échangeurs, dits refroidisseurs d'air de suralimentation, permettant un échange de chaleur entre de l'air de suralimentation, destiné à alimenter le moteur du véhicule, et un liquide de refroidissement. Ils comprennent un faisceau d'échange de chaleur constitué d'un empilement de plaques déterminant entre elles des canaux de circulation alternés pour l'air de suralimentation et pour le liquide de refroidissement. In this field, it is known exchangers, said charge air coolers, allowing a heat exchange between the charge air, for supplying the engine of the vehicle, and a coolant. They comprise a heat exchange bundle consisting of a stack of plates defining between them alternating circulation channels for the charge air and for the coolant.
Il est connu des refroidisseurs d'air de suralimentation à plaques empilés tels qu'évoqués plus haut dans lesquels chaque plaque guide le liquide de refroidissement dans un circuit formant plusieurs passes de section identique et à l'intérieur desquelles le liquide de refroidissement circule selon une direction orthogonale au flux d'air de suralimentation. Entre chaque passe, le liquide de refroidissement change de sens de circulation. En parcourant le circuit, la température du liquide de refroidissement augmente, ce qui entraîne une variation de ses propriétés physiques (notamment sa masse volumique, sa viscosité). Or, lorsque les propriétés physiques du liquide de refroidissement changent, la perte de charge évolue également. Dans les solutions existantes, les largeurs des passes sont identique au sein d'un même circuit et ne s'adapte pas à l'évolution des pertes de charges évoquée précédemment, ce qui a pour conséquence de dégrader les performances de l'échangeur. Les pertes de charges peuvent contribuer en effet de façon positive à l'efficacité thermique de l'échangeur car l'on sait que plus la perte de charge est importante, plus le mode d'écoulement du flux peut être turbulent, ce qui est favorable à l'échange thermique, au moins dans une certaine limite. Cependant, les pompes mises en œuvre pour la circulation du liquide de refroidissement possèdent des caractéristiques limitées, ceci afin d'éviter de trop pénaliser la consommation d'énergie prélevée sur le moteur du véhicule. Stacked plate charge air coolers are known, as mentioned above, in which each plate guides the cooling liquid in a circuit forming several passes of identical section and inside which the coolant circulates according to a orthogonal direction to the supercharging air flow. Between each pass, the coolant changes direction of flow. While traveling through the circuit, the temperature of the coolant increases, which causes a variation of its physical properties (in particular its density, its viscosity). However, when the physical properties of the coolant change, the pressure drop also changes. In existing solutions, the widths of the passes are identical within the same circuit and does not adapt to the evolution of the pressure losses mentioned above, which has the effect of degrading the performance of the exchanger. The pressure losses can indeed contribute positively to the heat efficiency of the exchanger because it is known that the greater the pressure loss, the more the flow flow can be turbulent mode, which is favorable to heat exchange, at least to a certain extent. However, the pumps used for the circulation of coolant have limited characteristics, in order to avoid too much penalize the energy consumption taken from the engine of the vehicle.
Il a ainsi été découvert dans le cadre de l'invention qu'une relation favorable existait entre l'évolution de la dimension des sections de passages des passes et révolution des changements des propriétés physiques du fluide de refroidissement afin de diminuer la perte de charge total du circuit sans trop pénaliser la performance thermique de l'échangeur. It has thus been discovered in the context of the invention that a favorable relationship existed between the evolution of the size of the pass passage sections and the revolution of the changes in the physical properties of the cooling fluid in order to reduce the total pressure drop. of the circuit without unduly penalizing the thermal performance of the exchanger.
L'invention porte ainsi sur une plaque destinée à permettre un échange de chaleur entre un premier et un deuxième fluide circulant au contact de la plaque, ladite plaque étant configurée pour définir un circuit comprenant plusieurs passes successives dans lequel le premier fluide circule selon une direction d'écoulement en changeant de sens d'écoulement d'une passe à l'autre, chacune des passes possédant une section de passage du premier fluide. The invention thus relates to a plate intended to allow a heat exchange between a first and a second fluid flowing in contact with the plate, said plate being configured to define a circuit comprising several successive passes in which the first fluid flows in one direction. flow by changing flow direction from one pass to another, each of the passes having a passage section of the first fluid.
Selon l'invention, la section de passage d'une passe, dite amont, est plus grande que la section de passage d'une autre passe, dite avale, située en avale de la passe amont selon la direction d'écoulement du premier fluide dans le circuit. According to the invention, the passage section of a pass, called upstream, is larger than the passage section of another pass, called downstream, located downstream of the upstream pass in the direction of flow of the first fluid. in the circuit.
Ainsi, en parcourant le circuit, le premier fluide circule par des passes dont la section de passage va en diminuant ce qui a pour effet d'accompagner l'évolution des pertes de charge dues à l'augmentation de sa température. Le coefficient de perte de charge peut alors être conservé relativement constant le long du circuit. Thus, by traversing the circuit, the first fluid circulates through passes whose passage section decreases which has the effect of accompanying the change in pressure losses due to the increase in temperature. The coefficient of pressure loss can then be kept relatively constant along the circuit.
Dans le cas des refroidisseurs d'air de suralimentation, le premier fluide correspond à un liquide de refroidissement et le deuxième fluide correspond à l'air de suralimentation. In the case of charge air coolers, the first fluid corresponds to a coolant and the second fluid corresponds to the charge air.
Selon un aspect de l'invention ladite plaque comprend une passe initiale et une passe finale et les sections de passage des passes décroissent d'une passe à l'autre depuis la passe initiale vers la passe finale. Elles décroissent, par exemple, de manière linéaire ou proportionnelle. According to one aspect of the invention, said plate comprises an initial pass and a final pass and the pass passage sections decrease by one pass. the other since the initial pass to the final pass. They decrease, for example, linearly or proportionally.
Selon un autre aspect de l'invention, la section de passage de la passe initiale est entre 40 et 60% plus grande que la section de passage de la passe finale. According to another aspect of the invention, the passage section of the initial pass is between 40 and 60% larger than the passage section of the final pass.
Selon un mode de réalisation particulier, ladite plaque comprend quatre passes, dites première passe, deuxième passe, troisième passe et quatrième passe, la première passe étant reliée à une entrée du circuit, la deuxième passe étant reliée à la première passe, la troisième passe étant relié à la deuxième passe et la quatrième passe étant reliée d'une part à la troisième passe et d'autre part à une sortie du circuit. La section de passage va alors en diminuant de la première passe jusqu'à la quatrième passe. According to a particular embodiment, said plate comprises four passes, said first pass, second pass, third pass and fourth pass, the first pass being connected to an input of the circuit, the second pass being connected to the first pass, the third pass being connected to the second pass and the fourth pass being connected on the one hand to the third pass and on the other hand to an output of the circuit. The passage section then decreases from the first pass until the fourth pass.
Avantageusement, la section de passage de la première passe est entre 5 et 15% plus grande que la section de passage de la deuxième passe. Toujours avantageusement, la section de passage de la deuxième passe est entre 20 et 40% plus grande que la section de passage de la troisième passe. En particulier, la section de passage de la troisième passe est entre 5 et 15% plus grande que la section de passage de la quatrième passe. Advantageously, the passage section of the first pass is between 5 and 15% larger than the passage section of the second pass. Advantageously, the passage section of the second pass is between 20 and 40% larger than the passage section of the third pass. In particular, the passage section of the third pass is between 5 and 15% larger than the passage section of the fourth pass.
Selon un exemple de réalisation la distance entre des bordures définissant la première passe est comprise entre 30 et 35 mm, la distance entre des bordures définissant la deuxième passe est comprise entre 27 et 32 mm, la distance entre des bordures définissant la troisième passe est comprise entre 22 et 25 mm et/ou la distance entre des bordures définissant la quatrième passe est comprise entre 20 et 23 mm. Les bordures définissant une passe sont, en particulier, parallèles entre elles de sorte que la section de passage d'une passe est constante. La section de passage est mesurée dans un plan perpendiculaire à un plan d'extension de la plaque. Selon un autre aspect de l'invention, les passes comprennent des perturbateurs de l'écoulement du fluide. According to an exemplary embodiment, the distance between edges defining the first pass is between 30 and 35 mm, the distance between edges defining the second pass is between 27 and 32 mm, the distance between edges defining the third pass is between between 22 and 25 mm and / or the distance between edges defining the fourth pass is between 20 and 23 mm. The borders defining a pass are, in particular, parallel to each other so that the passage section of a pass is constant. The passage section is measured in a plane perpendicular to an extension plane of the plate. According to another aspect of the invention, the passes comprise disruptors of the fluid flow.
L'invention concerne aussi un échangeur de chaleur, notamment destiné à un véhicule automobile, comprenant des plaques telles que définies précédemment, au moins deux desdites plaques étant empilées l'une sur l'autre en une paire de plaques de sorte que le circuit d'une des deux plaques est en miroir du circuit de l'autre des deux plaques. On comprend ici que deux plaques formant une paire de plaques sont empilées l'une sur l'autre de sorte que leur circuit forment ensemble un canal de circulation du premier fluide. The invention also relates to a heat exchanger, in particular intended for a motor vehicle, comprising plates as defined above, at least two of said plates being stacked one on the other in a pair of plates so that the circuit one of the two plates mirrors the circuit of the other of the two plates. It is understood here that two plates forming a pair of plates are stacked one on the other so that their circuit together form a circulation channel of the first fluid.
D'autres caractéristiques et avantages de l'invention apparaîtront encore à la lecture de la description qui suit d'exemples de réalisation donnés à titre illustratif en référence aux figures annexées. Sur ces figures : Other features and advantages of the invention will become apparent on reading the following description of exemplary embodiments given by way of illustration with reference to the appended figures. In these figures:
- la figure 1 est une vue en perspective illustrant de façon éclatée un échangeur de chaleur conforme à l'invention comprenant des plaques à quatre passes; - Figure 1 is a perspective view exploding exploded heat exchanger according to the invention comprising four-pass plates;
- la figure 2 est une vue de dessus d'une plaque comprenant quatre passes, destinée à repérer les différences de sections de passages des différentes passes selon l'invention. - Figure 2 is a top view of a plate comprising four passes, for identifying the differences of sections of passages of the different passes according to the invention.
Comme illustré à la figure 1 , l'invention concerne un échangeur de chaleur 1 permettant un échange de chaleur entre un fluide à refroidir, notamment un gaz G, et un liquide de refroidissement C. Il pourra s'agir d'un refroidisseur d'air de suralimentation dans lequel un flux d'air comprimé, destiné à alimenter un moteur thermique, par exemple un moteur de véhicule automobile, est refroidi par un liquide de refroidissement, notamment un mélange d'eau et de glycol. L'échangeur 1 comprend un faisceau 2 d'échange de chaleur constitué d'un empilement de plaques 4 déterminant entre elles des circuits 6, 8 alternés pour le fluide à refroidir et pour le liquide de refroidissement. Le faisceau est ici de forme globalement parallélépipédique et présente une face de sortie 10 et une face d'entrée opposée, non visible, du fluide à refroidir. Il est terminé de part et d'autre de l'empilement d'une plaque, dite supérieure, 12 et d'une plaque, dite inférieure, 14. As illustrated in FIG. 1, the invention relates to a heat exchanger 1 allowing a heat exchange between a fluid to be cooled, in particular a gas G, and a coolant C. It could be a cooler of supercharging air in which a flow of compressed air for supplying a heat engine, for example a motor vehicle engine, is cooled by a coolant, especially a mixture of water and glycol. The exchanger 1 comprises a heat exchange beam 2 consisting of a stack of plates 4 between them determining alternating circuits 6, 8 for the fluid to be cooled and for the cooling liquid. The beam here is of generally parallelepipedal shape and has an exit face 10 and a face opposite inlet, not visible, the fluid to be cooled. It is completed on both sides of the stack of a plate, said upper, 12 and a plate, said lower, 14.
L'échangeur 1 pourra également comprendre un boîtier 5 dans lequel le faisceau 2 est situé. Il guide le fluide à refroidir entre les plaques de la face d'entrée à la face de sortie 10 du faisceau 2. Il est ici constitué de deux parois latérales 18, venant chacune contre des bords 16, 16' latéraux des plaques 4, 12, 14, d'une paroi supérieure 20, venant au contact de la plaque supérieure 12 et d'une paroi inférieure 22, venant au contact de la plaque inférieure 14. La paroi supérieure 20 pourra être munie d'orifices 24, 26 permettant le passage, en sortie et en entrée, du liquide de refroidissement C dans le faisceau 2. The exchanger 1 may also include a housing 5 in which the beam 2 is located. It guides the fluid to be cooled between the plates of the inlet face to the exit face 10 of the bundle 2. It consists here of two lateral walls 18, each coming against the edges 16, 16 'of the side plates 4, 12 14, of an upper wall 20, coming into contact with the upper plate 12 and a lower wall 22, coming into contact with the lower plate 14. The upper wall 20 may be provided with orifices 24, 26 allowing the passage, at the outlet and at the inlet, of the coolant C in the bundle 2.
L'échangeur 1 pourra encore comprendre de tubulures 28, 30 de sortie et/ou d'entrée du liquide de refroidissement communiquant avec lesdits orifices 24, 26 prévus dans le boîtier. The exchanger 1 may further comprise nozzles 28, 30 for outlet and / or inlet of the cooling liquid communicating with said orifices 24, 26 provided in the housing.
Les différents composants de l'échangeur sont, par exemple, en aluminium ou alliage d'aluminium. Ils sont, notamment, brasés entre eux. Chaque plaque 4, 12, 14 comporte, par exemple, un fond 31 , sensiblement plan, entouré par une bordure périphérique 32 terminé par un méplat 34, permettant le brasage des plaques entre elles. Le circuit 8 de liquide de refroidissement est défini, d'une part, par ladite bordure périphérique 32 et, d'autre part, par une ou des bordures 60, 60', par exemple issues de matière du fond 31 de la plaque. The various components of the exchanger are, for example, aluminum or aluminum alloy. They are, in particular, soldered to each other. Each plate 4, 12, 14 comprises, for example, a bottom 31, substantially plane, surrounded by a peripheral edge 32 terminated by a flat portion 34, for brazing the plates together. The coolant circuit 8 is defined, on the one hand, by said peripheral rim 32 and, on the other hand, by one or more edges 60, 60 ', for example made from material of the bottom 31 of the plate.
Les plaques 4, 12, 14 sont groupées par paires et assemblées par leurs méplats 34 et/ou les bordures 60, 60'. De la sorte, le circuit d'une plaque supérieure 4 et d'une plaque inférieure 4 d'une même paire de plaques se complètent pour constituer un canal de circulation du liquide de refroidissement C. Autrement dit, les plaques 4 sont empilées par paire de sorte que le circuit 8 de liquide de refroidissement C d'une des deux plaques est en vis-à-vis du circuit 8 de liquide de refroidissement C de l'autre des deux plaques de la même paire afin de former le canal de circulation du liquide de refroidissement C. Les circuits 6 pour la circulation du fluide à refroidir sont prévus entre deux plaques 4 en vis-à-vis de deux paires de plaques 4 adjacentes. The plates 4, 12, 14 are grouped in pairs and assembled by their flats 34 and / or the edges 60, 60 '. In this way, the circuit of an upper plate 4 and a lower plate 4 of the same pair of plates complement each other to form a circulation channel for the coolant C. In other words, the plates 4 are stacked in pairs so that the coolant circuit C 8 of one of the two plates is vis-à-vis the coolant circuit 8 C of the other of the two plates of the same pair to form the circulation channel coolant C. Circuits 6 for circulation fluid to be cooled are provided between two plates 4 vis-à-vis two pairs of adjacent plates 4.
Dans l'exemple illustré, les plaques supérieure 12 et inférieure 14 de l'empilement sont assemblées avec les parois supérieure 20 et inférieure 22 du boîtier pour définir un canal de circulation de liquide de refroidissement. In the illustrated example, the top 12 and bottom 14 plates of the stack are assembled with the top and bottom walls 22 of the housing to define a coolant flow channel.
Les plaques 4, 12, 14 ont, par exemple, la forme générale d'un rectangle allongé ayant deux grands côtés et deux petits côtés, chaque plaque comportant deux bossages 38, un premier des bossages 38 présentant une entrée 42 du canal 8 de circulation de liquide de refroidissement C et l'autre des bossages 38 présentant une sortie 40 du canal de circulation du liquide de refroidissement C. The plates 4, 12, 14 have, for example, the general shape of an elongated rectangle having two long sides and two short sides, each plate having two bosses 38, a first of the bosses 38 having an inlet 42 of the circulation channel 8 coolant C and the other bosses 38 having an outlet 40 of the coolant circulation channel C.
Les bossages 38 sont situés le long d'un même petit côté de la plaque 4, 12, 14. Ils sont ici percés d'un orifice 50 de passage du liquide de refroidissement C et sont destinés à venir en contact avec les bossages 38 d'une plaque 4 adjacente pour former respectivement un collecteur d'entrée 44, et un collecteur de sortie, non visible, pour le fluide de refroidissement C. Le collecteur d'entrée 44 débouche, par exemple, dans la tubulure d'entrée 30 par l'orifice d'entrée 26 du boîtier et/ou le collecteur de sortie débouche, par exemple, dans la tubulure de sortie 28 par l'orifice de sortie 24 du boîtier. The bosses 38 are located along the same small side of the plate 4, 12, 14. They are here pierced with a hole 50 for the passage of coolant C and are intended to come into contact with the bosses 38 of the an adjacent plate 4 for respectively forming an inlet manifold 44, and an outlet manifold, not visible, for the coolant C. The inlet manifold 44 opens, for example, into the inlet manifold 30 through the inlet port 26 of the housing and / or the outlet manifold opens, for example, into the outlet pipe 28 through the outlet 24 of the housing.
Autrement dit, le fluide de refroidissement pénètre dans le faisceau par la tubulure d'entrée 30 puis est réparti entre les plaques 4 dans les circuits 8 de circulation de liquide de refroidissement par le collecteur d'entrée 44. Il s'écoule dans les circuits 8 de circulation du liquide de refroidissement C depuis leurs entrées 42 jusqu'au à leurs sorties 40 où il pénètre dans le collecteur de sortie. Il sort alors de l'échangeur par la tubulure de sortie 30. Les bossages 38 de deux paires de plaques 4 déterminent entre eux la hauteur des circuits 6 de circulation pour le fluide à refroidir. Une boîte collectrice d'entrée et une boîte collectrice de sortie (non représentées) pourront être adaptées à la périphérie du boîtier pour amener et évacuer le fluide à refroidir. L'échangeur pourra aussi comprendre des surfaces d'échanges secondaires, par exemple, des perturbateurs ondulés rapportés entre les plaques 4 dans les circuits 6 de circulation du fluide à refroidir G. Ces perturbateurs permettent de perturber le flux du fluide à refroidir G de manière à améliorer l'échange thermique entre les deux fluides. In other words, the cooling fluid enters the beam through the inlet pipe 30 and is distributed between the plates 4 in the circuits 8 for circulating coolant through the inlet manifold 44. It flows into the circuits 8 flow of coolant C from their inputs 42 to their outputs 40 where it enters the outlet manifold. It then leaves the exchanger through the outlet pipe 30. The bosses 38 of two pairs of plates 4 between them determine the height of the circulating circuits 6 for the fluid to be cooled. An inlet manifold and an outlet manifold (not shown) may be adapted to the periphery of the housing to bring and evacuate the fluid to be cooled. The exchanger may also comprise secondary exchange surfaces, for example corrugated disturbers reported between the plates 4 in the circulation circuits 6 of the fluid to be cooled G. These disrupters can disrupt the flow of the fluid to be cooled G to improve the heat exchange between the two fluids.
Chaque plaque 4, 12, 14 comprend par exemple des corrugations 52 disposés dans les circuits 8 de circulation du liquide de refroidissement C. Ces corrugations 52 s'étendent entre les poches 38 constituant le collecteur d'entrée et le collecteur de sortie 44 du liquide de refroidissement C et la deuxième extrémité longitudinale des plaques 4, 12, 14. Les corrugations 52 sont, par exemple, issues de matière du fond 31 des plaques 4, 12, 14, notamment par emboutissage des plaques 4, 12, 14. Each plate 4, 12, 14 for example comprises corrugations 52 arranged in the circuits 8 for circulating coolant C. These corrugations 52 extend between the pockets 38 constituting the inlet manifold and the outlet manifold 44 of the liquid C and the second longitudinal end of the plates 4, 12, 14. The corrugations 52 are, for example, derived from the bottom material 31 of the plates 4, 12, 14, in particular by stamping the plates 4, 12, 14.
Le circuit 8 défini par les plaques 4, 12, 14 permet de guider le liquide de refroidissement C en un nombre n de passes successives, ici quatre, dans lequel le liquide circule entre l'entrée 42 et la sortie 40 du circuit 8. Deux passes adjacentes sont séparées, par exemple, par les bordures 32, 60, 60' des plaques 4, 12, 14. The circuit 8 defined by the plates 4, 12, 14 makes it possible to guide the cooling liquid C in a number n of successive passes, here four, in which the liquid flows between the inlet 42 and the outlet 40 of the circuit 8. Two adjacent passes are separated, for example, by the borders 32, 60, 60 'of the plates 4, 12, 14.
Les passes sont disposées parallèlement les unes aux autres selon une direction d'extension, ici le grand côté des plaques. Elles pourront être prévues en série les unes à la suite des autres. The passes are arranged parallel to each other in an extension direction, here the long side of the plates. They may be provided in series one after the other.
Les bordures 60, 60' sont ainsi orientées selon le grand côté des plaques 4 pour définir une circulation en serpentin du liquide de refroidissement dans chacune des passes de chacun des circuits 8 de circulation du liquide de refroidissement C. Certaines 60 des bordures s'étendent depuis le bord 16 muni des bossages 38 vers le bord opposé 16' tout en laissant un passage pour que le fluide puisse s'écouler de la passe se trouvant d'un côté de la bordure 60 à l'autre passe. Elles alternent avec des bordures 60' s'étendant depuis le bord 16' opposé à celui 16 muni des bossages 38 vers le bord 1 6 muni des bossages 38 tout en laissant un passage pour que le fluide puisse s'écouler de la passe se trouvant d'un côté de la bordure 60' à l'autre. The borders 60, 60 'are thus oriented along the long side of the plates 4 to define a cooling coil circulation in each of the passes of each of the circulation circuits 8 of the cooling liquid C. Some 60 of the borders extend from the edge 16 provided with the bosses 38 to the opposite edge 16 'while leaving a passage so that the fluid can flow from the pass located from one side of the edge 60 to the other passes. They alternate with borders 60 'extending from the edge 16' opposite that 16 provided with the bosses 38 to the edge 1 6 provided with the bosses 38 while leaving a passage for the fluid to flow from the pass located on one side of the edge 60 'to another.
Dans l'exemple illustré sur les figures 1 et 2 où la plaque est munie de quatre passes, on observe une première passe 71 , ou passe initiale 71 , s'étendant depuis l'entrée 40 jusqu'au bord 16' opposé à celui 1 6 muni des bossages 38 ; une deuxième passe 72 liée à la première et s'étendant depuis le bord 1 6' opposé au bord 16 muni des bossages 38 jusqu'au bord 1 6 muni des bossages 38 ; une troisième passe 73 liée à la deuxième passe et s'étendant depuis le bord 1 6 muni des bossages 38 jusqu'au bord 1 6' opposé à celui 1 6 muni des bossages 38 ; et une quatrième passe 74 liée d'une part à la troisième passe 73 et d'autre part à la sortie 42 de sorte qu'elle s'étend depuis le bord 16' opposé au bord 16 muni des bossages 38 jusqu'au bord 1 6 muni des bossages 38. La circulation du fluide à refroidir D dans les circuits 6 de circulation du fluide à refroidir s'effectue ainsi dans une direction globalement perpendiculaire à celle de l'écoulement du liquide de refroidissement, le liquide de refroidissement changeant de sens d'écoulement d'une passe à l'autre. Une plaque conforme à l'invention est représentée sur la figure 2. Une telle plaque présente une longueur L selon la direction d'extension des passes et une largeur I dans une direction D orthogonale à la direction d'extension des passes. Dans l'échangeur, la direction D correspond ainsi à la direction d'écoulement du fluide à refroidir. De la même manière, dans une plaque comprenant n passes, chaque passe présente une largeur In correspondant à la distance suivant la direction D entre deux bordures 32, 60, 60' définissant cette passe. Ainsi, dans l'exemple illustré, la première passe 71 présente une largeur 11 , la deuxième passe 72 une largeur 12, la troisième passe une largeur 13 et la quatrième passe 74 une largeur 14. In the example illustrated in Figures 1 and 2 where the plate is provided with four passes, there is a first pass 71, or initial pass 71, extending from the inlet 40 to the edge 16 'opposite to that 1 6 provided with bosses 38; a second pass 72 connected to the first and extending from the edge 1 'opposed to the edge 16 provided with the bosses 38 to the edge 1 6 provided with the bosses 38; a third pass 73 connected to the second pass and extending from the edge 1 6 provided with the bosses 38 to the edge 1 6 'opposite that 1 6 provided with the bosses 38; and a fourth pass 74 connected on the one hand to the third pass 73 and on the other hand to the outlet 42 so that it extends from the edge 16 'opposite the edge 16 provided with the bosses 38 to the edge 1 6 provided with the bosses 38. The circulation of the fluid to be cooled D in the circulation circuits 6 of the fluid to be cooled is thus effected in a direction generally perpendicular to that of the coolant flow, the coolant changing direction flow from one pass to another. A plate according to the invention is shown in Figure 2. Such a plate has a length L in the direction of extension of the passes and a width I in a direction D orthogonal to the direction of extension of the passes. In the exchanger, the direction D thus corresponds to the direction of flow of the fluid to be cooled. Similarly, in a plate comprising n passes, each pass has a width In corresponding to the distance along the direction D between two edges 32, 60, 60 'defining this pass. Thus, in the illustrated example, the first pass 71 has a width 11, the second passes 72 a width 12, the third passes a width 13 and the fourth passes 74 a width 14.
Selon l'invention, la section de passage d'une passe, dite amont, est plus grande que la section de passage d'une autre passe, dite avale, située en avale de la passe amont selon la direction d'écoulement du liquide de refroidissement dans le circuit 8 de circulation du liquide de refroidissement. Le liquide de refroidissement s'écoulant de la passe initiale vers la passe finale, c'est-à-dire ici de la première passe 71 vers la quatrième passe 74, la section de passage décroît de la première passe 71 vers la quatrième passe 74. On observe ainsi une optimisation du ratio perte de charge/performance thermique. According to the invention, the passage section of a pass, called upstream, is larger than the passage section of another pass, called downstream, located downstream of the upstream pass in the direction of flow of the liquid of cooling in the circuit 8 for circulation of the coolant. The coolant flowing from the initial pass to the final pass, i.e., from the first pass 71 to the fourth pass 74, the passage section decreases from the first pass 71 to the fourth pass 74 There is thus an optimization of the loss of charge / thermal performance ratio.
On définit la section de passage d'une passe par sa largeur multiplié par la hauteur des bordures 32, 60, 60' qui la définissent. Les bordures 32, 60, 60' étant ici sensiblement parallèle entre elles et de hauteur identique, la comparaison des largeurs de passes équivaut dans la suite de la description à une comparaison des sections de passages de chaque passe. The section of passage of a pass is defined by its width multiplied by the height of the borders 32, 60, 60 'which define it. The borders 32, 60, 60 'being here substantially parallel to each other and of identical height, the comparison of the widths of passes is equivalent in the following description to a comparison of the passage sections of each pass.
Selon un aspect de l'invention, la largeur de la première passe 71 est entre 5 et 15% plus grande que la largeur l2 de la deuxième passe 72. According to one aspect of the invention, the width of the first pass 71 is between 5 and 15% larger than the width 1 2 of the second pass 72.
La largeur l2 de la deuxième passe est ici entre 20 et 40% plus grande que la largeur l3 de la troisième passe 73. The width l 2 of the second pass is here between 20 and 40% greater than the width l 3 of the third pass 73.
La largeur l3 de la troisième passe 73 est par exemple entre 5 et 15% plus grande que la largeur l4 de la quatrième passe 74. The width l 3 of the third pass 73 is for example between 5 and 15% greater than the width l 4 of the fourth pass 74.
Dans un exemple de réalisation, la largeur de la passe initiale, ici la première passe 71 , est entre 40 et 60% plus grande que la largeur de la passe finale, ici la quatrième passe 74 . In an exemplary embodiment, the width of the initial pass, here the first pass 71, is between 40 and 60% greater than the width of the final pass, here the fourth pass 74.
Dans l'exemple illustré sur la figure 2 la plaque la largeur I de la plaque 4, 12, 14 est, notamment, égale à 120 mm et sa longueur L est, par exemple, égale à 200 mm. Dans ce cas, la largeur de la première passe 71 est, notamment, comprise entre 30 et 35 mm, la largeur l2 de la deuxième passe 72 est, par exemple, comprise entre 27 et 32 mm, la largeur l3 de la troisième passe 73 est, en particulier, comprise entre 22 et 25 mm et la largeur l4 de la quatrième passe 74 est avantageusement comprise entre 20 et 23 mm. In the example illustrated in Figure 2 the plate width I of the plate 4, 12, 14 is, in particular, equal to 120 mm and its length L is, for example, equal to 200 mm. In this case, the width of the first pass 71 is in particular between 30 and 35 mm, the width 1 2 of the second pass 72 is, for example, between 27 and 32 mm, the width l 3 of the third pass 73 is in particular between 22 and 25 mm and the width l 4 of the fourth pass 74 is advantageously between 20 and 23 mm.

Claims

REVENDICATIONS
1 . Plaque (4, 12, 14) destinée à permettre un échange de chaleur entre un premier et un deuxième fluide (C, G) circulant au contact de la plaque (4, 12, 14), ladite plaque (4, 12, 14) étant configurée pour définir un circuit (8) comprenant plusieurs passes successives (71 , 72, 73, 74) dans lequel le premier fluide (C) circule selon une direction d'écoulement en changeant de sens d'écoulement d'une passe à l'autre, chacune des passes (71 , 72, 73, 74) possédant une section de passage du premier fluide (C), caractérisé par le fait que la section de passage d'une passe (71 , 72, 73, 74), dite amont, est plus grande que la section de passage d'une autre passe (71 , 72, 73, 74), dite avale, située en avale de la passe amont selon la direction d'écoulement du premier fluide dans le circuit (8). 1. Plate (4, 12, 14) for enabling a heat exchange between a first and a second fluid (C, G) flowing in contact with the plate (4, 12, 14), said plate (4, 12, 14) being configured to define a circuit (8) comprising a plurality of successive passes (71, 72, 73, 74) in which the first fluid (C) flows in a direction of flow by changing direction of flow from a pass to the another, each of the passes (71, 72, 73, 74) having a passage section of the first fluid (C), characterized in that the passage section of a pass (71, 72, 73, 74), said upstream, is larger than the passage section of another pass (71, 72, 73, 74), called downstream, located downstream of the upstream pass in the direction of flow of the first fluid in the circuit (8 ).
2. Plaque (4, 12, 14) selon la revendication 1 , ladite plaque (4, 12, 14) comprenant une passe initiale (71 ) et une passe finale (74), les sections de passage des passes (71 , 72, 73, 74) décroissent d'une passe à l'autre depuis la passe initialeThe plate (4, 12, 14) according to claim 1, said plate (4, 12, 14) comprising an initial pass (71) and a final pass (74), the pass passage sections (71, 72, 73, 74) decrease from one pass to another since the initial pass
(71 ) vers la passe finale (74). (71) to the final pass (74).
3. Plaque (4, 12, 14) selon la revendication 2, dans laquelle la section de passage de la passe initiale (71 ) est entre 40 et 60% plus grande que la section de passage de la passe finale (74). 3. Plate (4, 12, 14) according to claim 2, wherein the passage section of the initial pass (71) is between 40 and 60% greater than the passage section of the final pass (74).
4. Plaque (4, 12, 14) selon l'une quelconque des revendications précédentes, ladite plaque (4, 12, 14) comprenant quatre passes (71 , 72, 73, 74), dites première passe (71 ), deuxième passe (72), troisième passe (73) et quatrième passe (74), la première passe (71 ) étant reliée à une entrée (42) du circuit (8), la deuxième passe4. Plate (4, 12, 14) according to any one of the preceding claims, said plate (4, 12, 14) comprising four passes (71, 72, 73, 74), said first pass (71), second pass (72), third pass (73) and fourth pass (74), the first pass (71) being connected to an input (42) of the circuit (8), the second pass (71)
(72) étant reliée à la première passe (71 ), la troisième passe (73) étant relié à la deuxième passe (72) et la quatrième passe (74) étant reliée d'une part à la troisième passe (73) et d'autre part à une sortie du circuit (40). (72) being connected to the first pass (71), the third pass (73) being connected to the second pass (72) and the fourth pass (74) being connected on the one hand to the third pass (73) and on the other hand at an output of the circuit (40).
5. Plaque (4, 12, 14) selon la revendication 4, dans laquelle la section de passage de la première passe (71 ) est entre 5 et 15% plus grande que la section de passage de la deuxième passe (72). The plate (4, 12, 14) according to claim 4, wherein the passage section of the first pass (71) is between 5 and 15% larger than the passage section of the second pass (72).
6. Plaque (4, 12, 14) selon l'une quelconque des revendications 4 ou 5, dans laquelle la section de passage de la deuxième passe (72) est entre 20 et 40% plus grande que la section de passage de la troisième passe (73). 6. Plate (4, 12, 14) according to any one of claims 4 or 5, wherein the passage section of the second pass (72) is between 20 and 40% greater than the passage section of the third pass (73).
7. Plaque (4, 12, 14) selon l'une quelconque des revendications 4 à 6, dans laquelle la section de passage de la troisième passe (73) est entre 5 et 15% plus grande que la section de passage de la quatrième passe (74). 7. Plate (4, 12, 14) according to any one of claims 4 to 6, wherein the passage section of the third pass (73) is between 5 and 15% greater than the passage section of the fourth pass (74).
8. Plaque (4, 12, 14) selon l'une des revendications 4 à 7, dans laquelle la distance entre des bordures (38, 60) définissant la première passe (71 ) est comprise entre 30 et 35 mm, la distance entre des bordures (60, 60') définissant la deuxième passe (72) est comprise entre 27 et 32 mm, la distance entre des bordures (60', 60) définissant la troisième passe (73) est comprise entre 22 et 25 mm et/ou la distance entre des bordures (60, 38) définissant la quatrième passe (74) est comprise entre 20 et 23 mm. 8. Plate (4, 12, 14) according to one of claims 4 to 7, wherein the distance between edges (38, 60) defining the first pass (71) is between 30 and 35 mm, the distance between edges (60, 60 ') defining the second pass (72) is between 27 and 32 mm, the distance between edges (60', 60) defining the third pass (73) is between 22 and 25 mm and / or the distance between edges (60, 38) defining the fourth pass (74) is between 20 and 23 mm.
9. Plaque (4, 12, 14) selon l'une quelconque des revendications précédentes, dans laquelle les passes (71 , 72, 73, 74) comprennent des perturbateurs (52) de l'écoulement du fluide. The plate (4, 12, 14) according to any one of the preceding claims, wherein the passes (71, 72, 73, 74) comprise disrupters (52) of the fluid flow.
10. Echangeur de chaleur (1 ), notamment destiné à un véhicule automobile, comprenant des plaques (4) selon l'une quelconque des revendications précédentes, au moins deux desdites plaques (4) étant empilées l'une sur l'autre en une paire de plaques de sorte que le circuit (8) d'une des deux plaques (4) est en miroir du circuit (8) de l'autre des deux plaques (4). 10. Heat exchanger (1), especially for a motor vehicle, comprising plates (4) according to any one of the preceding claims, at least two of said plates (4) being stacked one on the other in one pair of plates so that the circuit (8) of one of the two plates (4) is in mirror of the circuit (8) of the other of the two plates (4).
PCT/EP2012/069504 2011-10-04 2012-10-02 Plate for a heat exchanger and heat exchanger equipped with such plates WO2013050396A1 (en)

Priority Applications (4)

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CN201280059742.0A CN103988042A (en) 2011-10-04 2012-10-02 Plate for heat exchanger and heat exchanger equipped with the plate
EP12769647.4A EP2764314A1 (en) 2011-10-04 2012-10-02 Plate for a heat exchanger and heat exchanger equipped with such plates
KR1020147011761A KR20140089529A (en) 2011-10-04 2012-10-02 Plate for a heat exchanger and heat exchanger equipped with such plates
US14/349,474 US20140246179A1 (en) 2011-10-04 2012-10-02 Plate For A Heat Exchanger And Heat Exchanger Equipped With Such Plates

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FR1158951 2011-10-04
FR1158951A FR2980840A1 (en) 2011-10-04 2011-10-04 PLATE FOR HEAT EXCHANGER AND HEAT EXCHANGER WITH SUCH PLATES

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EP (1) EP2764314A1 (en)
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FR2980840A1 (en) 2013-04-05
KR20140089529A (en) 2014-07-15
EP2764314A1 (en) 2014-08-13
CN103988042A (en) 2014-08-13
US20140246179A1 (en) 2014-09-04

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