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EP2764312A1 - Plate for heat exchanger and heat exchanger equipped with such plates - Google Patents

Plate for heat exchanger and heat exchanger equipped with such plates

Info

Publication number
EP2764312A1
EP2764312A1 EP12766984.4A EP12766984A EP2764312A1 EP 2764312 A1 EP2764312 A1 EP 2764312A1 EP 12766984 A EP12766984 A EP 12766984A EP 2764312 A1 EP2764312 A1 EP 2764312A1
Authority
EP
European Patent Office
Prior art keywords
plate
plates
exchanger
protuberances
fluid
Prior art date
Legal status (The legal status 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 status listed.)
Withdrawn
Application number
EP12766984.4A
Other languages
German (de)
French (fr)
Inventor
Nicolas Vallee
Demetrio ONETTI
Yoann Naudin
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Valeo Systemes Thermiques SAS
Original Assignee
Valeo Systemes Thermiques SAS
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 SAS filed Critical Valeo Systemes Thermiques SAS
Publication of EP2764312A1 publication Critical patent/EP2764312A1/en
Withdrawn legal-status Critical Current

Links

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
    • F28F3/08—Elements constructed for building-up into stacks, e.g. capable of being taken apart for cleaning
    • 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
    • F28F3/02—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations
    • F28F3/04—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being integral with the element
    • F28F3/042—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being integral with the element in the form of local deformations of the element
    • F28F3/044—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being integral with the element in the form of local deformations of the element the deformations being pontual, e.g. dimples
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
    • F28D1/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
    • F28D1/03—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with plate-like or laminated conduits
    • F28D1/0308—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with plate-like or laminated conduits the conduits being formed by paired plates touching each other
    • F28D1/0325—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with plate-like or laminated conduits the conduits being formed by paired plates touching each other the plates having lateral openings therein for circulation of the heat-exchange medium from one conduit to another
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/02—Header boxes; End plates
    • F28F9/04—Arrangements for sealing elements into header boxes or end plates
    • F28F9/16—Arrangements for sealing elements into header boxes or end plates by permanent joints, e.g. by rolling
    • F28F9/18—Arrangements for sealing elements into header boxes or end plates by permanent joints, e.g. by rolling by welding
    • F28F9/182—Arrangements for sealing elements into header boxes or end plates by permanent joints, e.g. by rolling by welding the heat-exchange conduits having ends with a particular shape, e.g. deformed; the heat-exchange conduits or end plates having supplementary joining means, e.g. abutments

Definitions

  • the invention relates to plates for heat exchangers and to plate heat exchangers, in particular for motor vehicles.
  • Each plate guides the coolant in a circuit comprising several passes.
  • These plates have the general shape of an elongated rectangle having two long sides and small sides, each plate having two bosses, one of the bosses having an inlet of the coolant circulation circuit and the other bosses having an outlet of the coolant circulation circuit.
  • the bosses are located along the same small side of the plate. They are intended to come into contact with the bosses of an adjacent plate to allow the coolant to pass from one traffic channel to another.
  • the cooling fluid is distributed between the plates by the input bosses. It then flows along the passes of the coolant circulation circuits to exit said plates at the output bosses.
  • the supercharging air enters the beam at one of the long sides of each plate to exit at the level of the other of the long sides.
  • Each plate thus comprises a heat exchange zone between the coolant and the supercharging air located at the passes and an inlet / outlet zone allowing the coolant to enter and exit each plate.
  • a disadvantage comes from the fact that the area in which the bosses are located concentrates mechanical stresses that can cause a rupture of the brazed elements together.
  • Another disadvantage comes from the fact that this zone is very detrimental to the thermal performance because the supercharging air passing through this zone, in particular between the bosses and the first longitudinal end of the plate, does not pass through the exchange zone between the two fluids and therefore does not exchange or almost no heat with the cooling liquid.
  • 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 for the first fluid.
  • said plate comprises one or more excrescences intended to penetrate into a collecting plate of the first fluid and defining an input and / or an output of the circuit.
  • the heat exchange zone between the two fluids of each plate is enlarged and the zone not participating in the heat exchange of each plate is reduced.
  • the only part of the plate not participating directly in the heat exchange is at the level of the growths.
  • the excrescences being oriented differently, they suffer less stress than the input / output areas of the first fluid, comprising bosses, known plates.
  • said plate comprises two excrescences.
  • the plate comprises, for example, an inlet protrusion through which the first fluid is able to enter and an outlet protrusion through which the first fluid is intended to exit.
  • said plate comprises two small sides and two long sides so that said plate has the shape of a rectangle, said growth or growths being located at the small sides of the rectangle.
  • said plate and said protuberances comprise a bottom and edges defining said circuit, said bottom of said growth or said growths and said bottom of said plate extending in the same plane.
  • the bottom of the growth or excrescences has, for example, a distal end devoid of borders so that the first fluid is able to enter and / or leave the circuit by the distal end of the excrescences.
  • the borders delimiting the circuit are parallel to each other at the level of the growth or excrescences and flare towards the rest of the circuit. They can then be parallel to each other up to a change of direction zone of the flow of the first fluid.
  • the borders therefore take the form of a funnel near the growths.
  • the term proximity means an area between 0 and 30 mm of the outgrowth.
  • the invention also relates to a heat exchange bundle comprising a stack of plates as described above, said plates being arranged in pairs so that two plates of the same pair determine between them a circulation channel for the first fluid. In the same way, two facing plates belonging to two pairs of adjacent plates determine between them a circulation channel for the second fluid.
  • the invention also relates to a heat exchanger comprising a heat exchange bundle as described above and said header plate, provided through said protrusions of said plates.
  • said exchanger comprises a housing provided with four walls and inside which said beam is located, one of the four walls being said collector plate.
  • the collecting plate is, for example, a side wall of the housing, that is to say a plate located vis-à-vis a peripheral lateral edge of the plates provided with the protrusions.
  • said exchanger comprises at least one inlet manifold inside which the protuberances of said plates defining the inlet of said circuits and an outlet manifold into which the protuberances of said plates open out. defining the output of said circuits.
  • the inlet and / or outlet manifolds are found outside the housing, that is to say outside the beam so that the whole beam participates in the heat exchange between the two fluids.
  • the collector plate comprises a flat part and collars surrounding said protuberances.
  • the collars participate in the mechanical maintenance of the plates relative to the housing and follow the contour of the protuberances so that the two fluids are sealed.
  • the borders of the excrescences terminate in a flat part, allowing brazing of the excrescences with each other and extending in a plane parallel to the plane in which the bottom of the excrescences extends.
  • Two plates forming a pair of plates are in contact at an inner face of the flats.
  • the collars follow an outer surface of the borders of the protuberances and an outer surface of the base of the protuberances, a lateral edge of the flats can then be in contact with the flat portion of the collector plate.
  • Each collar surrounding the excrescences of a pair of plates thus comprises an upper part and a lower part, the lower part of the collar being in contact with the protuberance of a lower plate of the pair of plates and the upper part of the collar being in contact with the protuberance of an upper plate of the pair.
  • the lower part and the upper part of each collar are not in contact with each other.
  • disrupters are arranged in the exchanger, said disrupters extending between two pairs of plates in the vicinity of said collector plate. In this way, the disturbers disturb the flow of the second fluid flowing between the pairs of plates from one side wall of the housing to the other.
  • the term proximity means a distance of between 0 and 1 mm.
  • the invention also relates to an air intake module comprising an exchanger as described above.
  • FIG. 1 is a perspective view partially illustrating a heat exchanger comprising plates according to the invention
  • FIG. 2 is a view from above of a plate of the exchanger of FIG. 1;
  • FIG. 3 is a partial perspective view of a collector plate traversed at the level of collars by the excrescences of the plates of the exchanger and
  • FIG. 4 is a partial view illustrating the side of the exchanger having the header plate.
  • the invention relates to a heat exchanger 1 allowing a heat exchange between a first fluid, for example a cooling liquid C and a second fluid, in particular a fluid to be cooled G.
  • a first fluid for example a cooling liquid C
  • a second fluid in particular a fluid to be cooled G.
  • This may be a charge air cooler in which the fluid to be cooled is a flow of compressed air for supplying a heat engine, for example a motor vehicle engine.
  • This flow of compressed air is cooled by the coolant, in particular a mixture of water and glycol.
  • Said exchanger 1 comprises a heat exchange beam 2 comprising a stack of plates 4 between them determining alternating circuits 6, 8 for the coolant C and for the fluid to be cooled G.
  • the beam 2 is here of generally parallelepipedic shape and has an inlet face 10 and an opposite non-visible outlet face of the second fluid G.
  • the plates 4 are here arranged in pairs so that two plates 4 of the same pair define between them a circulation channel for the coolant C.
  • the circuits 6 for the circulation of the fluid to be cooled G are provided between two plates 4 vis-à-vis two pairs of adjacent plates.
  • the exchanger may also include a housing 5 in which the beam 2 is located. It comprises here a left side wall 18 on the left in FIG. 1 and a right side wall 19 on the right in FIG.
  • the left side wall 18 comes into contact with left lateral edges (referenced 16 in FIG. 2) of the plates 4, while the right lateral wall 19 comes into contact with the right lateral edges (referenced 17 in FIG. 2) of the plates 4.
  • the housing 5 also comprises an upper wall (not shown) and a lower wall 22, connecting the side walls 18, 19 between them.
  • the housing 5 guides the fluid to be cooled G between the plates 4, from the input face 10 to the exit face of the beam 2.
  • the exchanger 1 may also include secondary exchange surfaces, arranged in the circulation circuits 6 of the second fluid.
  • the secondary exchange surfaces extend between two plates 4 vis-à-vis belonging to two pairs of adjacent plates.
  • the secondary exchange surfaces here comprise corrugated disruptors 52, reported between the plates in the circulation circuits 6 of the fluid to be cooled.
  • FIG. 2 represents a plate 4 according to the invention.
  • a plate 4 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 edge 32 and, on the other hand, by one or central edges 60, by example from material of the bottom 31 of the plate.
  • the plates 4 have, for example, the general shape of an elongated rectangle having two long sides and two small sides corresponding to the side edges 1 6, 1 7.
  • each plate has two protrusions 38, 39 intended to penetrate in a coolant collecting plate (corresponding to the left side wall 18 in FIG. 1) and defining an inlet 40 and / or an outlet 42 of the circuit 8.
  • it is an inlet protrusion 38 of said protuberances which has the input 40 and an output protrusion 39 which has the output 42.
  • the protuberances 38, 39 are located on the small sides 16, 1 7 of the plate, here at the small side 1 6 located on the left of Figure 2. They comprise a bottom 43 and borders 44 respectively extending the bottom 31 and the borders 32 of the plate 4 towards the outside thereof, that is to say beyond its lateral edge 16. Thus, the protuberances 38, 39 protrude from the bottom 31 of the plate 4.
  • the bottom 43 of the protuberances 38, 39 extends, for example, according to the plane in which the bottom 31 of the plate extends.
  • the protuberances 38, 39 have a distal end 45 without borders and two lateral ends. 44.
  • the cooling liquid can thus penetrate or leave the plate 4 by the distal end 45 of the protuberances 38, 39 and be guided in the circuit 8 of the plate 4 by the bottom 31, 42 and the borders 32. , 60, 44 protrusions 38, 39 and the plate 4. Just like the borders periphery RIQUES 32 of plates 4, the protrusions
  • the borders 32, 44, 60 are parallel to each other at the level of the protuberances 38, 39. They are flared in the vicinity of the projections 38, 39, that is to say that they are flared in a zone included , in particular, between 0 and 30 mm of the growths. This flaring of the edges 32, 44, 60 makes it possible to widen the circuit 8 for circulation of the cooling liquid in the case where the flare is close to the inlet protrusion 38 and to thin the circulation circuit 8. coolant in the case where the flare is close to the outgrowth 39.
  • the edges 32, 60 of the plates 4 are then parallel to each other up to a direction change zone of the flow of the cooling liquid.
  • the circuit 8 defined by the plates 4 makes it possible to guide the coolant in a number n of successive passes, here 2, in which the coolant flows from the inlet 40 to the outlet 42.
  • Two adjacent passes are separated by For example, by the central edge or edges 60 of the plates 4.
  • the passes are arranged parallel to each other in a direction of extension, here the long side of the plates 4. They may be provided in series one after the other .
  • the circulation of the coolant, changing flow direction from one pass to the other, is thus effected in a direction generally perpendicular to that of the flow of the fluid to be cooled passing through the exchanger of the face of the beam entry to its exit face, that is to say, one of the two large sides of the plates 4 to the other of the two long sides.
  • the plate comprises a single central edge 60. It can also comprise half-edges 60 ', parallel to the central edge 60 and the peripheral edges 32 so as to divide the same pass in several sub-passes.
  • the central edge 60 is thus oriented along the long side of the plates 4 to define a coil circulation of the coolant in each of the passes of each of the circuits 8 for circulation of the coolant.
  • the central edge 60 extends, for example, from the left side edge 1 6 to the right side edge 1 7 of the plate while leaving a passage for the coolant can flow from the pass lying one side of the central edge 60 to the other pass lying on the other side of the central edge 60.
  • the plate here comprises disrupters 55 located in the circuits 8. These disruptors 55 are, for example, derived from the bottom material of the plates 4, in particular by stamping the plates. They can take a semi-spherical shape as shown in Figure 2 or, for example, more elongated.
  • the plates 4 are grouped in pairs and in contact at their flats 34, 46 and / or their edges 32, 60, 44.
  • the circuit 8 of the top plate and the plate bottom of the same pair of plates complement each other to form a coolant circulation channel.
  • the plates 4 are thus stacked in pairs so that the circuit 8 for circulating the coolant of one of the two plates is opposite the circulation circuit 8 of the cooling liquid of the other of the two plates. the same pair to form the coolant circulation channel.
  • protuberances 38, 39 of the lower plate 4 of a pair of plates are located in life screws protrusions 38, 39 of the upper plate 4 of the same pair of plates.
  • the latter comprises an inlet manifold 71 and an outlet manifold 72 of the coolant C.
  • the manifold 71 is located opposite the inlet protuberances 38 of the plates 4 and forms with a zone of the left wall 18 at which the inlet protrusions open, an inlet manifold 73 of the liquid
  • the outlet manifold 72 is situated opposite the outlet protuberances of the plates 4 and forms with a zone of the left wall 18 at the level of which the outlet excrescences 39 an outlet manifold 74 of the coolant.
  • the collector boxes 71, 72 have the shape of an open skirt at the left wall 18 of the housing 5 to allow the cooling liquid C to enter and / or exit the circulation circuits 8 of the cooling liquid by the intermediate excrescences.
  • the manifolds 71, 72 also have an orifice, not shown, to allow the coolant C to enter and / or exit the manifolds 73, 74, that is to say enter and / or exit the exchanger 1.
  • the skirts here comprise two lateral faces 75, 76 located on either side of the protuberances and a face, said left 77 connecting the two lateral faces 75, 76.
  • the lateral faces 75, 76 may be of flared shapes a lower or upper edge of the boxes to an opposite face provided provided with the inlet / outlet of the cooling fluid.
  • the boxes 71, 72 are fixed to the header plate 18 by a distal contour defined here by a folded edge 90 bearing against said header plate 18. Thanks to the flared shape given to the circuit 8 near the excrescences the boxes can be configured from to have a width, that is to say, a distance between the two lateral faces 75, 76 of said boxes 71, 72, allowing the collector plate to have a width, that is to say a distance between the inlet / outlet faces for the fluid to be cooled, substantially equal to or just greater than the length of the lateral edges of the plates 4.
  • the coolant C enters the exchanger 1 by entering the inlet manifold 73, for example via inlet / outlet pipes (not shown). It is then distributed between the plates 4 in the circuits 8 for circulation of the coolant through the input excrescences. It then flows by turning around the two passes of the coolant circulation circuits 8 from the inputs to the outlets at which it exits beam 2 to enter the system. outlet manifold 74. The coolant C can then exit the exchanger 1, for example through the inlet / outlet pipes.
  • FIG. 3 illustrates an aspect of the invention according to which the left wall 18 of the housing 5, that is to say the header plate, comprises a flat portion 80 and flanges 81 surrounding the protuberances 38, 39.
  • Each collar 81 here includes two protrusions 38, 39 in contact with each other and belonging to the same pair of plates. Their roles is to facilitate the insertion of the protuberances 38, 39 into the header plate, to ensure their mechanical maintenance and to guarantee the seal between the inlet and / or outlet manifolds and the heat exchange bundle 2 , for the coolant and the fluid to be cooled.
  • the collars 81 are made, for example, by splitting the collector plate and are soldered to the protrusions 38, 39, in particular simultaneously with the brazing of the remainder of the exchanger.
  • the collars 81 comprise an upper portion 82 in contact with the protuberance 38, 39 of an upper plate of a pair of plates and a lower portion 83 in contact with the protuberance 38, 39 of a lower plate of the same pair of plate.
  • the lower and upper parts 82, 83 of the collars 81 are symmetrical with each other with respect to a plane passing through the flats 46 of the protuberances 38, 39.
  • the contact between the collars 81 and the excrescences is particularly at the bottom 43 and edges 44 of the protuberances 38, 39.
  • the collars 81 in fact marry an outer face of the edges 44 of the protrusions 38, 39 and an outer face of the bottom 43 of the growths 38, 39.
  • FIG. 4 illustrates the disrupters 52 of the flow of the fluid to be cooled which extend between two pairs of adjacent plates. Thanks to the invention, these disturbers 52 extend from one side wall of the housing to the other.
  • the left side wall 18 here acting as the coolant collecting plate, the disrupter 52 are located near the header plate, that is to say within 1 mm of the header plate.
  • the heat exchange is optimized since it takes place on an area from the left side wall 18 of the housing to the right side wall of the housing.
  • the various components of the exchanger are, for example, aluminum or aluminum alloy. They are, in particular, soldered to each other.

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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) intended to enable an exchange of heat between a first (C) and a second fluid (G) circulating in contact with the plate (4), said plate (4) being configured to define a circuit (8) for the first fluid (C). According to the invention, said plate (4) comprises one or more protuberances (38, 39) intended to penetrate a plate that collects the first fluid (C) and defining an inlet (40) to and/or an outlet (42) from the circuit (8). The invention also relates to an array (2) of such plates (4) and to a heat exchanger (1) comprising such an array (2).

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 comportant 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 comprising a stack of plates defining between them alternating circulation channels for the charge air and for the coolant.
Chaque plaque guide le liquide de refroidissement dans un circuit comprenant plusieurs passes. Ces plaques ont la forme générale d'un rectangle allongé ayant deux grands cotés et petits cotés, chaque plaque comportant deux bossages, un premier des bossages présentant une entrée du circuit de circulation de liquide de refroidissement et l'autre des bossages présentant une sortie du circuit de circulation du liquide de refroidissement. Les bossages sont situés le long d'un même petit côté de la plaque. Ils sont destinés à venir en contact avec les bossages d'une plaque adjacente pour permettre au liquide de refroidissement de passer d'un canal de circulation à un autre. Ainsi, le fluide de refroidissement est réparti entre les plaques par les bossages d'entrée. Il s'écoule ensuite le long des passes des circuits de circulation de liquide de refroidissement jusqu'à sortir desdites plaques au niveau des bossages de sorties. Each plate guides the coolant in a circuit comprising several passes. These plates have the general shape of an elongated rectangle having two long sides and small sides, each plate having two bosses, one of the bosses having an inlet of the coolant circulation circuit and the other bosses having an outlet of the coolant circulation circuit. The bosses are located along the same small side of the plate. They are intended to come into contact with the bosses of an adjacent plate to allow the coolant to pass from one traffic channel to another. Thus, the cooling fluid is distributed between the plates by the input bosses. It then flows along the passes of the coolant circulation circuits to exit said plates at the output bosses.
L'air de suralimentation entre dans le faisceau au niveau d'un des grands cotés de chaque plaque pour en sortir au niveau de l'autre des grands cotés. Chaque plaque comprend ainsi une zone d'échange de chaleur entre le liquide de refroidissement et l'air de suralimentation située au niveau des passes et une zone d'entrée/sortie permettant au liquide de refroidissement d'entrer et de sortir de chaque plaque. Un inconvénient vient du fait que la zone dans laquelle se situent les bossages concentre des contraintes mécanique pouvant engendrer une rupture des éléments brasés entre eux. Un autre inconvénient vient du fait que cette zone est très préjudiciable pour la performance thermique car l'air de suralimentation traversant cette zone, notamment entre les bossages et la première extrémité longitudinale de la plaque, ne passe pas par la zone d'échange entre les deux fluides et n'échange donc pas ou presque pas de chaleur avec le liquide refroidissement. The supercharging air enters the beam at one of the long sides of each plate to exit at the level of the other of the long sides. Each plate thus comprises a heat exchange zone between the coolant and the supercharging air located at the passes and an inlet / outlet zone allowing the coolant to enter and exit each plate. A disadvantage comes from the fact that the area in which the bosses are located concentrates mechanical stresses that can cause a rupture of the brazed elements together. Another disadvantage comes from the fact that this zone is very detrimental to the thermal performance because the supercharging air passing through this zone, in particular between the bosses and the first longitudinal end of the plate, does not pass through the exchange zone between the two fluids and therefore does not exchange or almost no heat with the cooling liquid.
Il est connu pour contourner cette problématique de modifier les composants de l'échangeur ou d'ajouter une pièce supplémentaire faisant écran et permettant de limiter le passage du fluide à refroidir par cette zone. Or cela complexifie les composants et/ou le processus de fabrication de l'échangeur, ce qui peut engendrer un surcoût et éventuellement une augmentation du poids de l'échangeur. L'invention vise à améliorer la situation. It is known to circumvent this problem to modify the components of the heat exchanger or to add an additional piece of screen and to limit the passage of the fluid to be cooled by this zone. However, this complicates the components and / or the manufacturing process of the exchanger, which can lead to additional costs and possibly an increase in the weight of the exchanger. The invention aims to improve the situation.
Elle propose à cet effet 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 pour le premier fluide. It proposes for this purpose 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 for the first fluid.
Selon l'invention, ladite plaque comprend une ou des excroissances destinées à pénétrer dans une plaque collectrice du premier fluide et définissant une entrée et/ou une sortie du circuit. Ainsi, la zone d'échange de chaleur entre les deux fluides de chaque plaque est agrandie et la zone ne participant pas à l'échange de chaleur de chaque plaque est diminuée. En effet, la seule partie de plaque ne participant pas directement à l'échange de chaleur se situe au niveau des excroissances. On peut aussi noter que les excroissances étant orientées de façon différente, elles subissent moins les contraintes que les zones d'entrée/sortie du premier fluide, comprenant des bossages, des plaques connues. Selon un aspect de l'invention, ladite plaque comprend deux excroissances. La plaque comprend par exemple une excroissance d'entrée par laquelle le premier fluide est apte à entrer et une excroissance de sortie par laquelle le premier fluide est destiné à sortir. According to the invention, said plate comprises one or more excrescences intended to penetrate into a collecting plate of the first fluid and defining an input and / or an output of the circuit. Thus, the heat exchange zone between the two fluids of each plate is enlarged and the zone not participating in the heat exchange of each plate is reduced. Indeed, the only part of the plate not participating directly in the heat exchange is at the level of the growths. It may also be noted that the excrescences being oriented differently, they suffer less stress than the input / output areas of the first fluid, comprising bosses, known plates. According to one aspect of the invention, said plate comprises two excrescences. The plate comprises, for example, an inlet protrusion through which the first fluid is able to enter and an outlet protrusion through which the first fluid is intended to exit.
Selon un autre aspect de l'invention, ladite plaque comprend deux petits cotés et deux grands cotés de sorte que ladite plaque possède la forme d'un rectangle, la ou lesdites excroissances étant situées au niveau des petits cotés du rectangle. Selon un exemple de réalisation, ladite plaque et lesdites excroissances comprennent un fond et des bordures définissant ledit circuit, ledit fond de la ou desdites excroissances et ledit fond de ladite plaque s'étendant selon un même plan. Le fond de la ou des excroissances possède, par exemple, une extrémité distale dépourvue de bordures de sorte que le premier fluide est apte à entrer et/ou sortir du circuit par l'extrémité distale des excroissances. According to another aspect of the invention, said plate comprises two small sides and two long sides so that said plate has the shape of a rectangle, said growth or growths being located at the small sides of the rectangle. According to an exemplary embodiment, said plate and said protuberances comprise a bottom and edges defining said circuit, said bottom of said growth or said growths and said bottom of said plate extending in the same plane. The bottom of the growth or excrescences has, for example, a distal end devoid of borders so that the first fluid is able to enter and / or leave the circuit by the distal end of the excrescences.
Selon un autre exemple de réalisation, les bordures délimitant le circuit sont parallèles entre elles au niveau de la ou des excroissances et s'évasent en direction du reste du circuit. Elles pourront ensuite être parallèles entre elles jusqu'à une zone de changement de direction de l'écoulement du premier fluide. Les bordures prennent donc la forme d'entonnoir à proximité des excroissances. On entend par le terme proximité une zone située entre 0 et 30 mm de l'excroissance. According to another exemplary embodiment, the borders delimiting the circuit are parallel to each other at the level of the growth or excrescences and flare towards the rest of the circuit. They can then be parallel to each other up to a change of direction zone of the flow of the first fluid. The borders therefore take the form of a funnel near the growths. The term proximity means an area between 0 and 30 mm of the outgrowth.
L'invention concerne aussi un faisceau d'échange de chaleur comprenant un empilement de plaques telles que décrites précédemment, lesdites plaques étant agencées par paires de sorte que deux plaques d'une même paire déterminent entre elles un canal de circulation pour le premier fluide. De la même manière, deux plaques en vis-à-vis appartenant à deux paires de plaques adjacentes déterminent entres elles un canal de circulation pour le deuxième fluide. The invention also relates to a heat exchange bundle comprising a stack of plates as described above, said plates being arranged in pairs so that two plates of the same pair determine between them a circulation channel for the first fluid. In the same way, two facing plates belonging to two pairs of adjacent plates determine between them a circulation channel for the second fluid.
L'invention concerne également un échangeur de chaleur comprenant un faisceau d'échange de chaleur tel que décrit précédemment et ladite plaque collectrice, prévue traversée par lesdites excroissances desdites plaques. Selon un aspect de l'invention, ledit échangeur comprend un boîtier muni de quatre parois et à l'intérieur duquel se trouve ledit faisceau, une des quatre parois étant ladite plaque collectrice. La plaque collectrice est, par exemple, une paroi latérale du boîtier, c'est-à-dire une plaque située en vis-à-vis d'un bord latéral périphérique des plaques munies des excroissances. The invention also relates to a heat exchanger comprising a heat exchange bundle as described above and said header plate, provided through said protrusions of said plates. According to one aspect of the invention, said exchanger comprises a housing provided with four walls and inside which said beam is located, one of the four walls being said collector plate. The collecting plate is, for example, a side wall of the housing, that is to say a plate located vis-à-vis a peripheral lateral edge of the plates provided with the protrusions.
Selon un autre aspect de l'invention, ledit échangeur comprend au moins un collecteur d'entrée à l'intérieur duquel débouchent les excroissances desdites plaques définissant l'entrée desdits circuits et un collecteur de sortie à l'intérieur duquel débouchent les excroissances desdites plaques définissant la sortie desdits circuits. De cette manière, le ou les collecteurs d'entrée et/ou de sortie se retrouve à l'extérieur du boîtier, c'est-à-dire à l'extérieur du faisceau de sorte que l'ensemble du faisceau participe à l'échange de chaleur entre les deux fluides. According to another aspect of the invention, said exchanger comprises at least one inlet manifold inside which the protuberances of said plates defining the inlet of said circuits and an outlet manifold into which the protuberances of said plates open out. defining the output of said circuits. In this way, the inlet and / or outlet manifolds are found outside the housing, that is to say outside the beam so that the whole beam participates in the heat exchange between the two fluids.
Selon un exemple de réalisation, la plaque collectrice comprend une partie plane et des collets entourant lesdites excroissances. Les collets participent au maintient mécanique des plaques par rapport au boîtier et épousent le contour des excroissances de sorte que les deux fluides sont isolés de manière étanche. According to an exemplary embodiment, the collector plate comprises a flat part and collars surrounding said protuberances. The collars participate in the mechanical maintenance of the plates relative to the housing and follow the contour of the protuberances so that the two fluids are sealed.
Selon un aspect de l'invention, les bordures des excroissances se terminent par un méplat, permettant le brasage des excroissances entre elles et s'étendant dans un plan parallèle au plan dans lequel s'étend le fond des excroissances. Deux plaques formant une paire de plaques sont en contact au niveau d'une face interne des méplats. Les collets épousent une face externe des bordures des excroissances et une face externe du fond des excroissances, une tranche latérale des méplats pouvant alors être en contact avec la partie plane de la plaque collectrice. Chaque collet entourant les excroissances d'une paire de plaque comprend ainsi une partie supérieure et une partie inférieure, la partie inférieure du collet étant en contact avec l'excroissance d'une plaque inférieure de la paire de plaque et la partie supérieure du collet étant en contact avec l'excroissance d'une plaque supérieure de la paire. La partie inférieure et la partie supérieure de chaque collet ne sont pas en contact entre elles. Selon un aspect de l'invention, des perturbateurs sont disposés dans l'échangeur, lesdits perturbateurs s'étendant entre deux paires de plaques jusqu'à proximité de ladite plaque collectrice. De cette manière, les perturbateurs perturbent le flux du deuxième fluide circulant entre les paires de plaques d'une paroi latérale du boîtier à l'autre. On entend ici par le terme proximité une distance comprise entre 0 et 1 mm. According to one aspect of the invention, the borders of the excrescences terminate in a flat part, allowing brazing of the excrescences with each other and extending in a plane parallel to the plane in which the bottom of the excrescences extends. Two plates forming a pair of plates are in contact at an inner face of the flats. The collars follow an outer surface of the borders of the protuberances and an outer surface of the base of the protuberances, a lateral edge of the flats can then be in contact with the flat portion of the collector plate. Each collar surrounding the excrescences of a pair of plates thus comprises an upper part and a lower part, the lower part of the collar being in contact with the protuberance of a lower plate of the pair of plates and the upper part of the collar being in contact with the protuberance of an upper plate of the pair. The lower part and the upper part of each collar are not in contact with each other. According to one aspect of the invention, disrupters are arranged in the exchanger, said disrupters extending between two pairs of plates in the vicinity of said collector plate. In this way, the disturbers disturb the flow of the second fluid flowing between the pairs of plates from one side wall of the housing to the other. Here, the term proximity means a distance of between 0 and 1 mm.
L'invention concerne aussi un module d'admission d'air comprenant un échangeur tel que décrit précédemment. The invention also relates to an air intake module comprising an exchanger as described above.
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 partielle un échangeur de chaleur comprenant des plaques conformes à l'invention ; - Figure 1 is a perspective view partially illustrating a heat exchanger comprising plates according to the invention;
- la figure 2 est une vue de dessus d'une plaque de l'échangeur de la figure 1 ; FIG. 2 is a view from above of a plate of the exchanger of FIG. 1;
- la figure 3 est une vue partielle en perspective d'une plaque collectrice traversée au niveau de collets par les excroissances des plaques de l'échangeur et FIG. 3 is a partial perspective view of a collector plate traversed at the level of collars by the excrescences of the plates of the exchanger and
- la figure 4 est une vue partielle illustrant le coté de l'échangeur présentant la plaque collectrice. - Figure 4 is a partial view illustrating the side of the exchanger having the header plate.
Comme illustré à la figure 1 , l'invention concerne un échangeur de chaleur 1 permettant un échange de chaleur entre un premier fluide, par exemple un liquide de refroidissement C et un deuxième fluide, notamment un fluide à refroidir G. Il pourra s'agir d'un refroidisseur d'air de suralimentation dans lequel le fluide à refroidir est un flux d'air comprimé, destiné à alimenter un moteur thermique, par exemple un moteur de véhicule automobile. Ce flux d'air comprimé est refroidi par le liquide de refroidissement, notamment, un mélange d'eau et de glycol. Ledit échangeur 1 comprend un faisceau 2 d'échange de chaleur comprenant un empilement de plaques 4 déterminant entre elles des circuits 6, 8 alternés pour le liquide de refroidissement C et pour le fluide à refroidir G. Le faisceau 2 est ici de forme globalement parallélépipédique et présente une face d'entrée 10 et une face de sortie opposée, non visible, du deuxième fluide G. Les plaques 4 sont ici agencées par paires de sorte que deux plaques 4 d'une même paire déterminent entre elles un canal de circulation pour le liquide de refroidissement C. Les circuits 6 pour la circulation du fluide à refroidir G sont prévus entre deux plaques 4 en vis-à- vis de deux paires de plaques adjacentes. As illustrated in FIG. 1, the invention relates to a heat exchanger 1 allowing a heat exchange between a first fluid, for example a cooling liquid C and a second fluid, in particular a fluid to be cooled G. This may be a charge air cooler in which the fluid to be cooled is a flow of compressed air for supplying a heat engine, for example a motor vehicle engine. This flow of compressed air is cooled by the coolant, in particular a mixture of water and glycol. Said exchanger 1 comprises a heat exchange beam 2 comprising a stack of plates 4 between them determining alternating circuits 6, 8 for the coolant C and for the fluid to be cooled G. The beam 2 is here of generally parallelepipedic shape and has an inlet face 10 and an opposite non-visible outlet face of the second fluid G. The plates 4 are here arranged in pairs so that two plates 4 of the same pair define between them a circulation channel for the coolant C. The circuits 6 for the circulation of the fluid to be cooled G are provided between two plates 4 vis-à-vis two pairs of adjacent plates.
L'échangeur pourra également comprendre un boîtier 5 dans lequel le faisceau 2 est situé. Il comprend ici une paroi latérale gauche 18 située à gauche sur la figure 1 et une paroi latérale droite 19 située à droite sur la figure 1 . La paroi latérale gauche 18 vient au contact de bords latéraux gauche (référencé 16 sur la figure 2) des plaques 4, alors que la paroi latérale droite 19 vient au contact de bords latéraux droit (référencé 17 sur la figure 2) des plaques 4. Le boîtier 5 comprend également une paroi supérieure (non présentée) et une paroi inférieure 22, reliant les parois latérales 18, 19 entre elles. Le boîtier 5 guide le fluide à refroidir G entre les plaques 4, depuis la face d'entrée 10 jusqu'à la face de sortie du faisceau 2. The exchanger may also include a housing 5 in which the beam 2 is located. It comprises here a left side wall 18 on the left in FIG. 1 and a right side wall 19 on the right in FIG. The left side wall 18 comes into contact with left lateral edges (referenced 16 in FIG. 2) of the plates 4, while the right lateral wall 19 comes into contact with the right lateral edges (referenced 17 in FIG. 2) of the plates 4. The housing 5 also comprises an upper wall (not shown) and a lower wall 22, connecting the side walls 18, 19 between them. The housing 5 guides the fluid to be cooled G between the plates 4, from the input face 10 to the exit face of the beam 2.
L'échangeur 1 peut aussi comprendre des surfaces d'échanges secondaires, disposés dans les circuits 6 de circulation du deuxième fluide. Les surfaces d'échange secondaire s'étendent entre deux plaques 4 en vis-à-vis appartenant à deux paires de plaques adjacentes. Les surfaces d'échange secondaires comprennent ici des perturbateurs ondulés 52, rapportés entre les plaques dans les circuits 6 de circulation du fluide à refroidir. The exchanger 1 may also include secondary exchange surfaces, arranged in the circulation circuits 6 of the second fluid. The secondary exchange surfaces extend between two plates 4 vis-à-vis belonging to two pairs of adjacent plates. The secondary exchange surfaces here comprise corrugated disruptors 52, reported between the plates in the circulation circuits 6 of the fluid to be cooled.
La figure 2 représente une plaque 4 selon l'invention. Une telle plaque 4, comporte, par exemple, un fond 31 , sensiblement plan, entouré par une bordure périphérique 32 terminée par un méplat 34, permettant le brasage des plaques entre elles. Le circuit 8 du liquide de refroidissement est défini, d'une part, par ladite bordure périphérique 32 et, d'autre part, par une ou des bordures centrales 60, par exemple issues de matière du fond 31 de la plaque. Les plaques 4 ont, par exemple, la forme générale d'un rectangle allongé ayant deux grands côtés et deux petits côtés correspondant aux bords latéraux 1 6, 1 7. Selon l'invention, chaque plaque comporte deux excroissances 38, 39 destinées à pénétrer dans une plaque collectrice du liquide de refroidissement (correspondant à la paroi latérale gauche 1 8 sur la figure 1 ) et définissant une entrée 40 et/ou une sortie 42 du circuit 8. Ici, c'est une excroissance d'entrée 38 desdites excroissances qui présente l'entrée 40 et une excroissance de sortie 39 qui présente la sortie 42. FIG. 2 represents a plate 4 according to the invention. Such a plate 4 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 edge 32 and, on the other hand, by one or central edges 60, by example from material of the bottom 31 of the plate. The plates 4 have, for example, the general shape of an elongated rectangle having two long sides and two small sides corresponding to the side edges 1 6, 1 7. According to the invention, each plate has two protrusions 38, 39 intended to penetrate in a coolant collecting plate (corresponding to the left side wall 18 in FIG. 1) and defining an inlet 40 and / or an outlet 42 of the circuit 8. Here, it is an inlet protrusion 38 of said protuberances which has the input 40 and an output protrusion 39 which has the output 42.
Les excroissances 38, 39 sont situés sur les petits cotés 16, 1 7 de la plaque, ici au niveau du petit coté 1 6 situé sur la gauche de la figure 2. Elles comprennent un fond 43 et des bordures 44 prolongeant respectivement le fond 31 et les bordures 32 de la plaque 4 vers l'extérieur de celle-ci, c'est-à-dire au-delà de son bord latéral 16. Ainsi, les excroissances 38, 39 font saillie par rapport au fond 31 de la plaque 4. Le fond 43 des excroissances 38, 39 s'étend, par exemple, selon le plan dans lequel s'étend le fond 31 de la plaque 4. Les excroissances 38, 39 possèdent une extrémité distale 45 dépourvue de bordures et deux extrémités latérales munies de bordures 44. Le liquide de refroidissement peut ainsi pénétrer ou sortir de la plaque 4 par l'extrémité distale 45 des excroissances 38, 39 et être guidé dans le circuit 8 de la plaque 4 par le fond 31 , 42 et les bordures 32, 60, 44 des excroissances 38, 39 et de la plaque 4. Tout comme les bordures périphériques 32 des plaques 4, les excroissancesThe protuberances 38, 39 are located on the small sides 16, 1 7 of the plate, here at the small side 1 6 located on the left of Figure 2. They comprise a bottom 43 and borders 44 respectively extending the bottom 31 and the borders 32 of the plate 4 towards the outside thereof, that is to say beyond its lateral edge 16. Thus, the protuberances 38, 39 protrude from the bottom 31 of the plate 4. The bottom 43 of the protuberances 38, 39 extends, for example, according to the plane in which the bottom 31 of the plate extends. The protuberances 38, 39 have a distal end 45 without borders and two lateral ends. 44. The cooling liquid can thus penetrate or leave the plate 4 by the distal end 45 of the protuberances 38, 39 and be guided in the circuit 8 of the plate 4 by the bottom 31, 42 and the borders 32. , 60, 44 protrusions 38, 39 and the plate 4. Just like the borders periphery RIQUES 32 of plates 4, the protrusions
38, 39 se terminent par un méplat 46 qui s'étend selon un plan parallèle au fond 43 des excroissances 38, 39. C'est au niveau d'une face interne de ces méplats 46 que les excroissances d'entrée 38 et/ou de sortie 39 d'une même paire de plaque sont en contact et brasée l'une à l'autre. 38, 39 end with a flat portion 46 which extends in a plane parallel to the bottom 43 of the protuberances 38, 39. It is at an inner face of these flats 46 that the input protrusions 38 and / or output 39 of the same pair of plates are in contact and brazed to one another.
Les bordures 32, 44, 60 sont parallèles entre elles au niveau des excroissances 38, 39. Elles sont de forme évasées à proximité des excroissances 38, 39, c'est-à-dire qu'elles sont de forme évasées dans une zone comprise, notamment, entre 0 et 30 mm des excroissances. Cet évasement des bordures 32, 44, 60 permet d'élargir le circuit 8 de circulation du liquide de refroidissement dans le cas où l'évasement se trouve à proximité de l'excroissance d'entrée 38 et d'amincir le circuit 8 de circulation du liquide de refroidissement dans le cas où l'évasement se trouve à proximité de l'excroissance de sortie 39. Les bordures 32, 60 des plaques 4 sont ensuite parallèles entre elles jusqu'à une zone de changement de direction de l'écoulement du liquide de refroidissement. The borders 32, 44, 60 are parallel to each other at the level of the protuberances 38, 39. They are flared in the vicinity of the projections 38, 39, that is to say that they are flared in a zone included , in particular, between 0 and 30 mm of the growths. This flaring of the edges 32, 44, 60 makes it possible to widen the circuit 8 for circulation of the cooling liquid in the case where the flare is close to the inlet protrusion 38 and to thin the circulation circuit 8. coolant in the case where the flare is close to the outgrowth 39. The edges 32, 60 of the plates 4 are then parallel to each other up to a direction change zone of the flow of the cooling liquid.
Le circuit 8 défini par les plaques 4 permet de guider le liquide de refroidissement en un nombre n de passes successives, ici 2, dans lequel le liquide de refroidissement circule depuis l'entrée 40 vers la sortie 42. Deux passes adjacentes sont séparées, par exemple, par la ou les bordures centrales 60 des plaques 4. Les passes sont disposées parallèlement les unes aux autres selon une direction d'extension, ici le grand côté des plaques 4. Elles pourront être prévues en série les unes à la suite des autres. The circuit 8 defined by the plates 4 makes it possible to guide the coolant in a number n of successive passes, here 2, in which the coolant flows from the inlet 40 to the outlet 42. Two adjacent passes are separated by For example, by the central edge or edges 60 of the plates 4. The passes are arranged parallel to each other in a direction of extension, here the long side of the plates 4. They may be provided in series one after the other .
La circulation du liquide de refroidissement, changeant de direction d'écoulement d'une passe à l'autre, s'effectue ainsi dans une direction globalement perpendiculaire à celle de l'écoulement du fluide à refroidir traversant l'échangeur de la face d'entrée du faisceau à sa face de sortie, c'est-à-dire d'un des deux grands cotés des plaques 4 à l'autre des deux grands cotés. The circulation of the coolant, changing flow direction from one pass to the other, is thus effected in a direction generally perpendicular to that of the flow of the fluid to be cooled passing through the exchanger of the face of the beam entry to its exit face, that is to say, one of the two large sides of the plates 4 to the other of the two long sides.
Dans l'exemple illustré où la plaque 4 définit deux passes, la plaque comprend une seule bordure centrale 60. Elle peut également comprendre des demis bordures 60', parallèle à la bordure centrale 60 et aux bordures périphériques 32 de manière à diviser une même passe en plusieurs sous passes. La bordure centrale 60 est ainsi orientée 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. La bordure centrale 60 s'étend, par exemple, depuis le bord latéral gauche 1 6 vers le bord latéral droit 1 7 de la plaque tout en laissant un passage pour que le liquide de refroidissement puisse s'écouler de la passe se trouvant d'un côté de la bordure centrale 60 à l'autre passe se trouvant de l'autre coté de la bordure centrale 60. La plaque comprend ici des perturbateurs 55 situés dans les circuits 8. Ces perturbateurs 55 sont, par exemple, issues de matière du fond des plaques 4, notamment par emboutissage des plaques. Ils peuvent prendre une forme semi sphérique comme illustré sur la figure 2 ou, par exemple, plus allongées. In the illustrated example where the plate 4 defines two passes, the plate comprises a single central edge 60. It can also comprise half-edges 60 ', parallel to the central edge 60 and the peripheral edges 32 so as to divide the same pass in several sub-passes. The central edge 60 is thus oriented along the long side of the plates 4 to define a coil circulation of the coolant in each of the passes of each of the circuits 8 for circulation of the coolant. The central edge 60 extends, for example, from the left side edge 1 6 to the right side edge 1 7 of the plate while leaving a passage for the coolant can flow from the pass lying one side of the central edge 60 to the other pass lying on the other side of the central edge 60. The plate here comprises disrupters 55 located in the circuits 8. These disruptors 55 are, for example, derived from the bottom material of the plates 4, in particular by stamping the plates. They can take a semi-spherical shape as shown in Figure 2 or, for example, more elongated.
Une fois assemblées, les plaques 4, sont groupées par paires et en contact au niveau de leurs méplats 34, 46 et/ou de leurs bordures 32, 60, 44. De cette manière, le circuit 8 de la plaque supérieure et de la plaque inférieure d'une même paire de plaques se complètent pour constituer un canal de circulation du liquide de refroidissement. Les plaques 4 sont ainsi empilées par paire de sorte que le circuit 8 de circulation du liquide de refroidissement d'une des deux plaques est en vis-à-vis du circuit 8 de circulation du liquide de refroidissement de l'autre des deux plaques d'une même paire afin de former le canal de circulation de liquide de refroidissement. Once assembled, the plates 4 are grouped in pairs and in contact at their flats 34, 46 and / or their edges 32, 60, 44. In this way, the circuit 8 of the top plate and the plate bottom of the same pair of plates complement each other to form a coolant circulation channel. The plates 4 are thus stacked in pairs so that the circuit 8 for circulating the coolant of one of the two plates is opposite the circulation circuit 8 of the cooling liquid of the other of the two plates. the same pair to form the coolant circulation channel.
De cette manière, les excroissances 38, 39 de la plaque 4 inférieure d'une paire de plaque sont situé en vis à vie des excroissances 38, 39 de la plaque 4 supérieure de la même paire de plaque. En revenant maintenant à l'échangeur de chaleur représenté sur la figure 1 , on observe que les excroissances pénètrent dans la plaque collectrice de l'échangeur, ici la paroi gauche 18 du boîtier 5. In this way, the protuberances 38, 39 of the lower plate 4 of a pair of plates are located in life screws protrusions 38, 39 of the upper plate 4 of the same pair of plates. Returning now to the heat exchanger shown in FIG. 1, it is observed that the protrusions penetrate into the collector plate of the exchanger, here the left wall 18 of the housing 5.
Pour faire entrer et sortir le liquide de refroidissement C dans les circuits 8 des différentes plaques 4 de l'échangeur 1 , ce dernier comprend une boite collectrice d'entrée 71 et une boite collectrice de sortie 72 du liquide de refroidissement C. La boite collectrice d'entrée 71 est située en vis-à-vis des excroissances d'entrée 38 des plaques 4 et forme avec une zone de la paroi gauche 18 au niveau de laquelle débouchent les excroissances d'entrée, un collecteur d'entrée 73 du liquide de refroidissement C. De la même manière, la boite collectrice de sortie 72 est située en vis-à-vis des excroissances de sortie des plaques 4 et forme avec une zone de la paroi gauche 18 au niveau de laquelle débouchent les excroissances de sortie 39 un collecteur de sortie 74 du liquide de refroidissement. Les boites collectrices 71 , 72 ont la forme d'une jupe ouverte au niveau de la paroi gauche 18 du boîtier 5 pour permettre au liquide de refroidissement C d'entrer et/ou de sortir des circuits 8 de circulation du liquide de refroidissement par l'intermédiaire des excroissances. Les boites collectrices 71 , 72 présentent également un orifice, non représenté, pour permettre au liquide de refroidissement C d'entrer et/ou de sortir des collecteurs 73, 74, c'est-à-dire entrer et/ou sortir de l'échangeur 1 . Les jupes comprennent ici deux faces latérales 75, 76 situées de part et d'autre des excroissances et une face, dite gauche 77 reliant les deux face latérales 75, 76. Il faut noter que les faces latérales 75, 76 pourront être de formes évasées d'un bord inférieur ou supérieur des boites vers une face opposée, prévue munie de l'orifice d'entrée/sortie du fluide de refroidissement. Autrement dit la section des jupes selon un plan parallèle au plan dans lesquels s'étend le fond des plaques 4, décroît de la face supérieure jusqu'à la face inférieure. To enter and exit the coolant C in the circuits 8 of the different plates 4 of the exchanger 1, the latter comprises an inlet manifold 71 and an outlet manifold 72 of the coolant C. The manifold 71 is located opposite the inlet protuberances 38 of the plates 4 and forms with a zone of the left wall 18 at which the inlet protrusions open, an inlet manifold 73 of the liquid In the same way, the outlet manifold 72 is situated opposite the outlet protuberances of the plates 4 and forms with a zone of the left wall 18 at the level of which the outlet excrescences 39 an outlet manifold 74 of the coolant. The collector boxes 71, 72 have the shape of an open skirt at the left wall 18 of the housing 5 to allow the cooling liquid C to enter and / or exit the circulation circuits 8 of the cooling liquid by the intermediate excrescences. The manifolds 71, 72 also have an orifice, not shown, to allow the coolant C to enter and / or exit the manifolds 73, 74, that is to say enter and / or exit the exchanger 1. The skirts here comprise two lateral faces 75, 76 located on either side of the protuberances and a face, said left 77 connecting the two lateral faces 75, 76. It should be noted that the lateral faces 75, 76 may be of flared shapes a lower or upper edge of the boxes to an opposite face provided provided with the inlet / outlet of the cooling fluid. In other words the section of the skirts in a plane parallel to the plane in which the bottom of the plates 4 extends, decreases from the upper face to the lower face.
Les boîtes 71 , 72 sont fixées à la plaque collectrice 18 par un contour distal défini ici par un bord plié 90 prenant appui contre ladite plaque collectrice 18. Grâce à la forme évasée donnée au circuit 8 à proximité des excroissances les boîtes pourront être configurées de façon à présenter une largeur, c'est-à-dire, une distance entre les deux faces latérales 75, 76 desdites boîtes 71 , 72, permettant à la plaque collectrice de présenter une largeur, c'est-à-dire une distance entre les faces d'entrée/sortie pour le fluide à refroidir, sensiblement égale ou juste supérieure à la longueur des bords latéraux des plaques 4. The boxes 71, 72 are fixed to the header plate 18 by a distal contour defined here by a folded edge 90 bearing against said header plate 18. Thanks to the flared shape given to the circuit 8 near the excrescences the boxes can be configured from to have a width, that is to say, a distance between the two lateral faces 75, 76 of said boxes 71, 72, allowing the collector plate to have a width, that is to say a distance between the inlet / outlet faces for the fluid to be cooled, substantially equal to or just greater than the length of the lateral edges of the plates 4.
Ainsi, le liquide de refroidissement C pénètre dans l'échangeur 1 en entrant dans le collecteur d'entrée 73, par exemple par l'intermédiaire de tubulures d'entrée/sortie (non représentées). Il se répartit alors entre les plaques 4 dans les circuits 8 de circulation du liquide de refroidissement par l'intermédiaire des excroissances d'entrée. Il s'écoule ensuite en faisant demi-tour dans les deux passes des circuits 8 de circulation du liquide de refroidissement depuis les entrées jusqu'aux sorties au niveau desquelles il sort du faisceau 2 pour entrer dans le collecteur de sortie 74. Le liquide de refroidissement C peut alors sortir de l'échangeur 1 , par exemple par les tubulures d'entrée/sortie. Thus, the coolant C enters the exchanger 1 by entering the inlet manifold 73, for example via inlet / outlet pipes (not shown). It is then distributed between the plates 4 in the circuits 8 for circulation of the coolant through the input excrescences. It then flows by turning around the two passes of the coolant circulation circuits 8 from the inputs to the outlets at which it exits beam 2 to enter the system. outlet manifold 74. The coolant C can then exit the exchanger 1, for example through the inlet / outlet pipes.
La figure 3 permet d'illustrer un aspect de l'invention selon lequel la paroi gauche 18 du boîtier 5, c'est-à-dire la plaque collectrice, comprend une partie plane 80 et des collets 81 entourant les excroissances 38, 39. Chaque collet 81 englobe ici deux excroissances 38, 39 en contact l'une avec l'autre et appartenant à une même paire de plaque. Leurs rôles est de faciliter l'insertion des excroissances 38, 39 dans la plaque collectrice, d'assurer leurs maintient mécanique et de garantir l'étanchéité entre les collecteurs d'entrée et/ou de sortie et le faisceau 2 d'échange de chaleur, pour le liquide de refroidissement et le fluide à refroidir. Les collets 81 sont réalisés, par exemple, par fendage de la plaque collectrice et sont brasés aux excroissances 38, 39, notamment de façon simultanée au brasage du reste de l'échangeur. Les collets 81 comprennent une partie supérieure 82 en contact avec l'excroissance 38, 39 d'une plaque supérieure d'une paire de plaque et une partie inférieure 83 en contact avec l'excroissance 38, 39 d'une plaque inférieure de la même paire de plaque. Les parties inférieures et supérieures 82, 83 des collets 81 sont symétrique entre elle par rapport à un plan passant par les méplats 46 des excroissances 38, 39. FIG. 3 illustrates an aspect of the invention according to which the left wall 18 of the housing 5, that is to say the header plate, comprises a flat portion 80 and flanges 81 surrounding the protuberances 38, 39. Each collar 81 here includes two protrusions 38, 39 in contact with each other and belonging to the same pair of plates. Their roles is to facilitate the insertion of the protuberances 38, 39 into the header plate, to ensure their mechanical maintenance and to guarantee the seal between the inlet and / or outlet manifolds and the heat exchange bundle 2 , for the coolant and the fluid to be cooled. The collars 81 are made, for example, by splitting the collector plate and are soldered to the protrusions 38, 39, in particular simultaneously with the brazing of the remainder of the exchanger. The collars 81 comprise an upper portion 82 in contact with the protuberance 38, 39 of an upper plate of a pair of plates and a lower portion 83 in contact with the protuberance 38, 39 of a lower plate of the same pair of plate. The lower and upper parts 82, 83 of the collars 81 are symmetrical with each other with respect to a plane passing through the flats 46 of the protuberances 38, 39.
Le contact entre les collets 81 et les excroissances se fait en particulier au niveau du fond 43 et des bordures 44 des excroissances 38, 39. Les collets 81 épousent en effet une face externe des bordures 44 des excroissances 38, 39 et une face externe du fond 43 des excroissances 38, 39. The contact between the collars 81 and the excrescences is particularly at the bottom 43 and edges 44 of the protuberances 38, 39. The collars 81 in fact marry an outer face of the edges 44 of the protrusions 38, 39 and an outer face of the bottom 43 of the growths 38, 39.
Les méplats 46 des excroissances 38, 39 se terminent au niveau d'une tranche latérale 84. Ces tranches latérales 84 ne sont pas au contact des collets 81 . En effet, la partie supérieure 82 et la partie inférieure 83 des collets 81 se terminent au niveau des faces extérieures des méplats 46 des excroissances 38, 39 et n'entourent pas les tranches latérales des méplats 46. Ainsi ces tranches latérales sont directement au contact de la partie plane 80 la plaque collectrice. La figure 4 permet d'illustrer les perturbateurs 52 de l'écoulement du fluide à refroidir qui s'étendent entre deux paires de plaques adjacentes. Grâce à l'invention, ces perturbateurs 52 s'étendent d'une paroi latérale du boîtier à l'autre. La paroi latérale gauche 18 jouant ici le rôle de plaque collectrice du liquide de refroidissement, les perturbateurs 52 sont situés à proximité de la plaque collectrice, c'est-à-dire à moins de 1 mm de la plaque collectrice. L'échange de chaleur est donc optimisé puisqu'il a lieu sur une zone allant de la paroi latérale gauche 18 du boîtier à la paroi latérale droite du boîtier. Les différents composants de l'échangeur sont, par exemple, en aluminium ou alliage d'aluminium. Ils sont, notamment, brasés entre eux. The flats 46 of the protuberances 38, 39 terminate at a lateral edge 84. These lateral edges 84 are not in contact with the collars 81. Indeed, the upper part 82 and the lower part 83 of the collars 81 terminate at the outer faces of the flats 46 of the protuberances 38, 39 and do not surround the side edges of the flats 46. Thus, these side edges are directly in contact the flat portion 80 the collector plate. FIG. 4 illustrates the disrupters 52 of the flow of the fluid to be cooled which extend between two pairs of adjacent plates. Thanks to the invention, these disturbers 52 extend from one side wall of the housing to the other. The left side wall 18 here acting as the coolant collecting plate, the disrupter 52 are located near the header plate, that is to say within 1 mm of the header plate. The heat exchange is optimized since it takes place on an area from the left side wall 18 of the housing to the right side wall of the housing. The various components of the exchanger are, for example, aluminum or aluminum alloy. They are, in particular, soldered to each other.

Claims

REVENDICATIONS
1 . Plaque (4) destinée à permettre un échange de chaleur entre un premier (C) et un deuxième fluide (G) circulant au contact de la plaque (4), ladite plaque (4) étant configurée pour définir un circuit (8) pour le premier fluide (C), caractérisé par le fait que ladite plaque (4) comprend une ou des excroissances (38, 39) destinées à pénétrer dans une plaque collectrice (18) du premier fluide (C) et définissant une entrée (40) et/ou une sortie (42) du circuit (8). 1. Plate (4) intended to allow a heat exchange between a first (C) and a second fluid (G) flowing in contact with the plate (4), said plate (4) being configured to define a circuit (8) for the first fluid (C), characterized in that said plate (4) comprises one or more excrescences (38, 39) intended to penetrate into a collecting plate (18) of the first fluid (C) and defining an inlet (40) and or an output (42) of the circuit (8).
2. Plaque (4) selon la revendication 1 , dans laquelle ladite plaque (4) comprend deux excroissances (38, 39) définissant respectivement l'entrée (40) et la sortie (42) du circuit (8). 2. Plate (4) according to claim 1, wherein said plate (4) comprises two protuberances (38, 39) respectively defining the inlet (40) and the outlet (42) of the circuit (8).
3. Plaque (4) selon l'une quelconque des revendications précédentes, dans laquelle ladite plaque (4) comprend deux petits cotés (16, 17) et deux grands cotés de sorte que ladite plaque (4) possède la forme d'un rectangle, la ou lesdites excroissances (38, 39) étant situées au niveau des petits cotés (16, 17) du rectangle. 3. Plate (4) according to any one of the preceding claims, wherein said plate (4) comprises two small sides (16, 17) and two long sides so that said plate (4) has the shape of a rectangle , said growth or growths (38, 39) being situated at the level of the small sides (16, 17) of the rectangle.
4. Plaque (4) selon l'une quelconque des revendications précédentes, ladite plaque (4) et lesdites excroissances (38, 39) comprennent un fond (31 , 43) et des bordures (32, 60, 46) définissant ledit circuit (8), ledit fond (43) de la ou desdites excroissances (38, 39) et ledit fond (31 ) de ladite plaque (4) s'étendant selon un même plan. 4. Plate (4) according to any one of the preceding claims, said plate (4) and said protuberances (38, 39) comprise a bottom (31, 43) and edges (32, 60, 46) defining said circuit ( 8), said bottom (43) of said one or more protuberances (38, 39) and said bottom (31) of said plate (4) extending in the same plane.
5. Plaque (4) selon la revendication 4, dans laquelle les bordures (32, 60, 46) délimitant le circuit (8) sont parallèles entre elles au niveau de la ou des excroissances (38, 39) et s'évasent en direction du reste du circuit (8). 5. Plate (4) according to claim 4, wherein the edges (32, 60, 46) delimiting the circuit (8) are parallel to each other at the or growths (38, 39) and flare in the direction from the rest of the circuit (8).
6. Faisceau (2) d'échange de chaleur comprenant un empilement de plaques (4) selon l'une quelconque des revendications précédentes, lesdites plaques (4) étant agencées par paires de sorte que deux plaques (4) d'une même paire déterminent entre elles un canal de circulation pour le premier fluide (C). 6. beam (2) heat exchange comprising a stack of plates (4) according to any one of the preceding claims, said plates (4) being arranged in pairs so that two plates (4) of the same pair between them determine a circulation channel for the first fluid (C).
7. Echangeur (1 ) de chaleur comprenant un faisceau (2) d'échange de chaleur selon la revendication 6 et ladite plaque collectrice (18), prévue traversée par lesdites excroissances (38, 39) desdites plaques (4). 7. heat exchanger (1) comprising a heat exchange beam (2) according to claim 6 and said header plate (18), provided through which said protrusions (38, 39) of said plates (4).
8. Echangeur (1 ) selon la revendication 7, ledit échangeur comprenant un boîtier (5) muni de quatre parois (18, 19, 22) et à l'intérieur duquel se trouve ledit faisceau (2), une des quatre parois (18, 19, 22) étant ladite plaque collectrice (18). 8. Exchanger (1) according to claim 7, said exchanger comprising a housing (5) provided with four walls (18, 19, 22) and inside which said beam (2), one of the four walls (18). , 19, 22) being said header plate (18).
9. Echangeur (1 ) selon la revendication 7 ou 8, ledit échangeur (1 ) comprenant au moins un collecteur d'entrée (73) à l'intérieur duquel débouchent les excroissances (38) desdites plaques (4) définissant l'entrée (40) desdits circuits (8) et un collecteur de sortie (74) à l'intérieur duquel débouchent les excroissances (39) desdites plaques (4) définissant la sortie (42) desdits circuits (8). 9. Exchanger (1) according to claim 7 or 8, said exchanger (1) comprising at least one inlet manifold (73) inside which open the protrusions (38) of said plates (4) defining the inlet ( 40) of said circuits (8) and an outlet manifold (74) inside which the protrusions (39) of said plates (4) defining the output (42) of said circuits (8) open.
10. Echangeur (1 ) de chaleur selon l'une quelconque des revendications 7 àHeat exchanger (1) according to one of claims 7 to
9, dans lequel la plaque collectrice (18) comprend une partie plane (80) et des collets (81 ) entourant lesdites excroissances (38, 39). 9, wherein the header plate (18) comprises a planar portion (80) and collars (81) surrounding said protuberances (38, 39).
1 1 . Echangeur (1 ) selon la revendication 10, dans lequel les bordures (44) des excroissances (38, 39) se terminent par un méplat (46), permettant le brasage des excroissances (38, 39) entre elles et s'étendant dans un plan parallèle au plan dans lequel s'étend le fond (31 ) des excroissances (38, 39). 1 1. Heat exchanger (1) according to claim 10, wherein the edges (44) of the protuberances (38, 39) terminate in a flat (46), allowing the soldering of the protuberances (38, 39) between them and extending in a plane parallel to the plane in which the bottom (31) of the protuberances (38, 39) extends.
12. Echangeur (1 ) selon la revendication 1 1 , dans lequel deux plaques (4) formant une paire de plaques sont en contact au niveau d'une face interne des méplats (46). 12. Exchanger (1) according to claim 1 1, wherein two plates (4) forming a pair of plates are in contact at an inner face of the flats (46).
13. Echangeur (1 ) selon la revendication 1 1 ou 12, dans lequel les collets (81 ) épousent une face externe des bordures (44) des excroissances (38, 39) et une face externe du fond (43) des excroissances (38, 39) et/ou une tranche latérale (84) des méplats (46) est en contact avec la partie plane (80) de la plaque collectrice (18). 13. Exchanger (1) according to claim 1 1 or 12, wherein the collars (81) conform to an outer surface of the borders (44) of the projections (38, 39) and an outer face of the bottom (43) of the excrescences (38). 39) and / or a side edge (84) of the flats (46) is in contact with the flat portion (80) of the header plate (18).
14. Echangeur (1 ) selon l'une quelconques des revendications 7 à 1 3, dans lequel des perturbateurs (52) sont disposés, lesdits perturbateurs (52) s'étendant entre deux paires de plaques jusqu'à proximité de ladite plaque collectrice (1 8). 14. Exchanger (1) according to any one of claims 7 to 1 3, wherein disrupters (52) are arranged, said disrupters (52) extending between two pairs of plates to near said collector plate ( 1 8).
1 5. Module d'admission d'air comprenant un échangeur selon l'une quelconque des revendications 7 à 14. An air intake module comprising an exchanger according to any one of claims 7 to 14.
EP12766984.4A 2011-10-04 2012-10-02 Plate for heat exchanger and heat exchanger equipped with such plates Withdrawn EP2764312A1 (en)

Applications Claiming Priority (2)

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FR1158952A FR2980839A1 (en) 2011-10-04 2011-10-04 PLATE FOR HEAT EXCHANGER AND HEAT EXCHANGER WITH SUCH PLATES
PCT/EP2012/069501 WO2013050393A1 (en) 2011-10-04 2012-10-02 Plate for heat exchanger and heat exchanger equipped with such plates

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US20140318754A1 (en) 2014-10-30
WO2013050393A1 (en) 2013-04-11

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