EP2734801A1 - Heat exchanger and corresponding flat tube and plate - Google Patents

Heat exchanger and corresponding flat tube and plate

Info

Publication number
EP2734801A1
EP2734801A1 EP12737293.6A EP12737293A EP2734801A1 EP 2734801 A1 EP2734801 A1 EP 2734801A1 EP 12737293 A EP12737293 A EP 12737293A EP 2734801 A1 EP2734801 A1 EP 2734801A1
Authority
EP
European Patent Office
Prior art keywords
rib
plate
channel
circulation
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Withdrawn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
EP12737293.6A
Other languages
German (de)
French (fr)
Inventor
Nicolas Vallee
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 EP2734801A1 publication Critical patent/EP2734801A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P3/00—Liquid cooling
    • 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
    • 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
    • F28D1/0333—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 the plates having integrated connecting members
    • F28D1/0341—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 the plates having integrated connecting members with U-flow or serpentine-flow inside the conduits
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D9/00—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D9/0031—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one heat-exchange medium being formed by paired plates touching each other
    • F28D9/0043—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one heat-exchange medium being formed by paired plates touching each other the plates having openings therein for circulation of at least one heat-exchange medium from one conduit to another
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D9/00—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D9/0031—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one heat-exchange medium being formed by paired plates touching each other
    • F28D9/0043—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one heat-exchange medium being formed by paired plates touching each other the plates having openings therein for circulation of at least one heat-exchange medium from one conduit to another
    • F28D9/0056—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one heat-exchange medium being formed by paired plates touching each other the plates having openings therein for circulation of at least one heat-exchange medium from one conduit to another with U-flow or serpentine-flow inside conduits; with centrally arranged openings on the plates
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • 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
    • F28F3/025—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being corrugated, plate-like elements
    • 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
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2225/00—Reinforcing means
    • F28F2225/04—Reinforcing means for conduits

Definitions

  • the invention relates to a heat exchanger, in particular for a motor vehicle.
  • a heat exchanger for example used in the automotive industry and more specifically in an internal combustion engine of a motor vehicle, comprises heat exchange elements and fluid flow in which fluids exchanging heat exchange between them .
  • fluid associations can be envisaged, be they liquids and / or gases.
  • an "air-water” exchanger such as a charge air cooler, may be provided.
  • the heat exchange elements may for example comprise flat tubes, gas flow disrupting vanes and / or fluid flow disruptors or the like.
  • Exchangers comprising a bundle of plates arranged in pairs parallel to each other on one or more rows parallel to each other.
  • the pairs of plates are arranged to define on the one hand a flow passage of a first fluid and on the other hand an interval between two pairs of adjacent plates through which a second fluid can flow by exchanging heat. with the first fluid.
  • each plate can define two or more circulation passes. Each pass is defined by a traffic channel.
  • a flat plate heat exchanger plate is generally defined with four passes.
  • the object of the invention is to further improve the performance of heat exchangers known thermal, in terms of reduction of mechanical stresses and losses of load.
  • the invention relates to a heat exchanger for cooling charge air, said exchanger comprises at least one flat tube for the circulation of a fluid, formed by assembling a pair of plates delimiting a first channel and a second circulation channel, such that said channels communicate with each other at one end to define a substantially U-shaped circulation of said fluid, characterized in that at least one plate comprises at least a first rib and a second rib generally shaped substantially in "L"; and in that said at least one first rib, respectively second rib, is arranged in said first channel, respectively second channel, of circulation.
  • Said exchanger may further comprise one or more of the following characteristics, taken separately or in combination:
  • said at least one plate comprises a central rib, said central rib projecting into said at least one flat tube for delimiting the first and second circulation channels;
  • said at least first and second ribs are symmetrical with respect to said central rib;
  • said at least one first rib extends substantially at the center of the width of said first channel, and said at least one second rib extends substantially at the center of the width of said second channel;
  • said at least one plate comprises a fluid inlet orifice arranged in said first circulation channel and a fluid outlet orifice arranged in said second circulation channel, and said at least one first rib is substantially aligned with respect to the center.
  • said inlet port and said at least one second rib is substantially aligned with respect to the center of said outlet port;
  • said at least one plate has a plurality of projections forming projections in the flow passage of said fluid
  • the invention also relates to a flat tube for heat exchanger according to any one of the preceding claims, said tube being formed by the assembly of a pair of plates delimiting a first channel and a second channel of circulation, such as said channels. communicate with one another at one end to define a substantially U-shaped circulation of said fluid, characterized in that at least one plate comprises at least a first rib and a second rib of generally "L" -shaped general shape; said at least one first rib, respectively second rib, being arranged in said first channel, respectively second channel, circulation.
  • Said tube may further comprise one or more of the following characteristics, taken separately or in combination:
  • said plates respectively comprise a central rib, and the central rib of a first plate is in contact with the central rib vis-à-vis the second plate;
  • said first and second ribs of the first plate are respectively in contact with said first and second ribs vis-à-vis the second plate.
  • the invention also relates to a plate for a heat exchanger flat tube delimiting a first channel and a second circulation channel, said channels communicating with one another at one end so as to define a substantially U-shaped circulation of said fluid, characterized in that said plate comprises at least a first rib and a second rib of generally "L" shape; said at least one first rib, respectively second rib, being arranged in said first channel, respectively second channel, circulation.
  • FIG. 1 represents a side view of a plate heat exchanger
  • the invention relates to a heat exchanger, in particular for cooling the supercharging air for a heat engine, such as a motor vehicle engine.
  • Such an exchanger may be an exchanger called "air-water”, that is to say an exchanger in which the fluids that exchange heat are air and water.
  • the water is preferably water from the so-called “low temperature” cooling circuit of said engine; it is typically brine.
  • FIG. 1 represents, seen from the side, a heat exchanger 1.
  • the exchanger 1 has for example a generally parallelepipedal general shape.
  • the exchanger 1 comprises a stack of flat tubes 3.
  • the flat tubes 3 may be alternately arranged with interleaves 5.
  • a spacer 5 is for example formed from a corrugated thin film heat-conductive, the ridges of which are in alternating contact with the two flat tubes 3 on the other hand. else of tab 5.
  • An air flow can flow through the spacers 5 to exchange heat with the fluid flowing in the flat tubes 3.
  • the spacers 5 disrupt the flow of air so as to increase the exchange surface.
  • all the flat tubes 3 are identical.
  • Each tube is for example formed by assembling a pair of plates 7 in gard.
  • the exchanger 1 is therefore of the plate type.
  • the assembled plates 7 define between them a passage 9 for the flow a fluid, in particular a cooling fluid.
  • a passage 9 may have a substantially constant thickness.
  • a plate 7 (better visible in FIG. 2) has a generally rectangular shape with a length L and a width 1.
  • the plate 7 has a width 1 less than or equal to
  • the plate 7 has for example a length L between 120 mm and 280 mm.
  • Each plate 7 has orifices forming a fluid inlet 11 for introducing fluid into the fluid flow passage 9 and a fluid outlet 13 for discharging the fluid.
  • a plate 7 further comprises at the level of the fluid inlet 11 and the fluid outlet 13 of the plates 7 of the bulges 15 (see FIG. 1). These bulges 15 are oriented towards the outside of the fluid flow passage 9.
  • the bulges 15 of a plate 7 communicate with the bulges 15 of a plate 7 of a pair of neighboring plates 7. Due to the bulges 15, the stack of flat tubes 3 creates, between two pairs of adjacent plates 7, a gap. These intervals may be lined with an interlayer 5 as described above.
  • the exchanger 1 comprises respectively two inlet and outlet pipes 17, for the passage of a fluid. These pipes 17 communicate respectively with the bulges 15 and associated orifices 11, 13 of the plates 7, to allow the circulation of the fluid between the plates 7.
  • the plates 7 are made from stamped sheet metal.
  • Such stamped plates 7 have a substantially bowl shape. Each plate 7 has a peripheral edge 19 forming a contour of the plate 7.
  • the plates 7 of the same pair are joined together in a sealed manner over their entire contour at their respective peripheral edge 19 to define a passage 9 for the flow of the fluid.
  • the plates 7 are arranged so that their concavities are facing each other.
  • the plates 7 are sealingly connected, for example by brazing.
  • a stamped plate 7 as shown in FIG. 2, defines two circulation passes.
  • the plate 7 comprises a central rib 21.
  • This central rib 21 This central rib
  • This central rib 21 is arranged on the inner surface of the plate, that is to say facing the fluid flow passage 9, so that the central rib 21 forms a projection in the flow passage 9. fluid.
  • the central rib 21 is a longitudinal rib joining two plates 7 of a pair so as to define circulation passes for the fluid.
  • This separation delimits a first circulation channel 23 and a second circulation channel 25 thus forming two passes with a "U" circulation between the inlet 11 and the fluid outlet 13.
  • the first pass is defined by the first flow channel 23 and the second pass is defined by the second flow channel 25.
  • this central rib 21 may have a rounded end 27.
  • Such a plate 7 further comprises at least a first secondary rib 29 and at least a second secondary rib 31. These two secondary ribs 29 and 31 provide a mechanical reinforcing function of the plate 7.
  • the first rib 29 is arranged in the first circulation channel 23 so as to divide it into two sub-channels 23a and 23b.
  • the second secondary rib 31 is arranged in the second fluid circulation channel 25 so as to divide it into two sub-channels 25a and 25b.
  • the secondary ribs 29,31 have a generally "L” shape. This "L” shape makes it possible to combine mechanical strength and reduction of pressure drops. Indeed, using secondary ribs substantially “L”, the Applicant has found a better compromise between mechanical stress and loss of loads.
  • the secondary ribs 29, 31 substantially in "L" may have rounded edges, so as not to have a sharp angle, to better balance the flow of the fluid.
  • these two ribs are arranged on either side of the central rib 21.
  • first rib 29 and the second secondary rib 31 are symmetrical with respect to the central rib 21.
  • the secondary ribs 29 and 31 are respectively arranged substantially at the center, in the width direction, of the associated circulation channel 23, 25.
  • the first rib 29 extends substantially at the center of the width of the first channel 23, and the second rib 31 extends substantially at the center of the width of the second channel 25.
  • first rib is in the illustrated embodiment substantially aligned with respect to the center of the inlet orifice 11.
  • the second rib is substantially aligned with respect to the center of the outlet orifice 13.
  • the plate 7 may still have a multitude of bosses 33 on its inner surface. Thus, these bosses 33 project in the passage 9 of the fluid flow.
  • the bosses 33 are for example brazing points.
  • This arrangement is particularly suitable for the plates 7 of width less than 100mm.
  • the Applicant has found a reduction in mechanical stresses of up to 35% by using such plates 7 according to the invention, compared to stamped plates defining two passes but not having the secondary ribs "L" substantially in the middle two passes.
  • This new type of plates 7 in two passes subdivided by ribs in "L" thus allows to further increase the thermal performance of the exchanger 1.

Landscapes

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

Abstract

The invention concerns a heat exchanger for cooling charge air, said exchanger comprising at least one flat tube for circulation of a fluid, formed by assembling a pair of plates (7) in such a way as to define a first circulation channel (23) and a second circulation channel (25), such that said channels (23, 25) communicate with one another at one end to establish substantially "U"-shaped circulation of said fluid. According to the invention, at least one plate (7) comprises at least one first rib (29) and one second rib (31) which are generally substantially "L"-shaped, such that said at least one first rib (29) or second rib (31) respectively is arranged in said first circulation channel (23) or second circulation channel (25) respectively. The invention also concerns a flat tube for such an exchanger formed from a pair of plates, at least one plate (7) of which comprises at least one first rib (29) and one second rib (31) which are generally substantially "L"-shaped, such that said at least one first rib (29) or second rib (31) respectively is arranged in said first circulation channel (23) or second circulation channel (25) respectively. The invention further concerns such a plate (7) for a heat exchanger flat tube.

Description

Échangeur thermique, tube plat et plaque correspondants  Heat exchanger, flat tube and corresponding plate
L'invention concerne un échangeur thermique notamment pour véhicule automobile. The invention relates to a heat exchanger, in particular for a motor vehicle.
Un échangeur thermique, par exemple utilisé dans l'industrie automobile et plus précisément dans un moteur thermique à combustion interne de véhicule automobile, comprend des éléments d'échange thermique et d'écoulement de fluide dans lesquels circulent des fluides échangeant de la chaleur entre eux.  A heat exchanger, for example used in the automotive industry and more specifically in an internal combustion engine of a motor vehicle, comprises heat exchange elements and fluid flow in which fluids exchanging heat exchange between them .
De nombreuses associations de fluides peuvent être envisagées, qu'il s'agisse de liquides et/ou de gaz. On peut prévoir notamment un échangeur dit « air-eau », tel qu'un refroidisseur d'air de suralimentation.  Many fluid associations can be envisaged, be they liquids and / or gases. In particular, an "air-water" exchanger, such as a charge air cooler, may be provided.
Les éléments d'échange thermique peuvent par exemple comprendre des tubes plats, des ailettes de perturbation de la circulation de gaz et/ou des perturbateurs d'écoulement de fluide ou autres.  The heat exchange elements may for example comprise flat tubes, gas flow disrupting vanes and / or fluid flow disruptors or the like.
De nombreuses configurations structurelles sont envisageables.  Many structural configurations are possible.
On connaît des échangeurs comprenant un faisceau de plaques disposées par paires parallèlement les unes aux autres sur une ou plusieurs rangées parallèles entre elles. Les paires de plaques sont agencées pour définir d'une part un passage d'écoulement d'un premier fluide et d'autre part un intervalle entre deux paires de plaques voisines à travers lequel un deuxième fluide peut s'écouler en échangeant de la chaleur avec le premier fluide.  Exchangers are known comprising a bundle of plates arranged in pairs parallel to each other on one or more rows parallel to each other. The pairs of plates are arranged to define on the one hand a flow passage of a first fluid and on the other hand an interval between two pairs of adjacent plates through which a second fluid can flow by exchanging heat. with the first fluid.
Selon une solution connue, chaque plaque peut définir deux ou plusieurs passes de circulation. Chaque passe est définie par un canal de circulation.  According to a known solution, each plate can define two or more circulation passes. Each pass is defined by a traffic channel.
À titre d'exemple, une plaque pour tube plat d'échangeur est généralement définie avec quatre passes.  For example, a flat plate heat exchanger plate is generally defined with four passes.
On connaît également des plaques définies avec deux passes.  Plaques defined with two passes are also known.
Cependant, afin de garantir une bonne tenue mécanique, il est nécessaire de densifïer la plaque. Pour cela, il est connu de réaliser une multitude de bossages, par exemple des points de brasage.  However, to ensure good mechanical strength, it is necessary to densify the plate. For this, it is known to make a multitude of bosses, for example brazing points.
L'invention a pour objectif d'améliorer encore les performances des échangeurs thermique connus, en terme de réduction de contraintes mécaniques et de pertes de charge. The object of the invention is to further improve the performance of heat exchangers known thermal, in terms of reduction of mechanical stresses and losses of load.
A cet effet, l'invention a pour objet un échangeur thermique pour refroidissement d'air de suralimentation, ledit échangeur comprend au moins un tube plat pour la circulation d'un fluide, formé par l'assemblage d'une paire de plaques en délimitant un premier canal et un second canal de circulation, tels que lesdits canaux communiquent entre eux à une extrémité pour définir une circulation sensiblement en « U » dudit fluide, caractérisé en ce que au moins une plaque comporte au moins une première nervure et une seconde nervure de forme générale sensiblement en « L »; et en ce que ladite au moins une première nervure, respectivement seconde nervure, est agencée dans ledit premier canal, respectivement second canal, de circulation.  For this purpose, the invention relates to a heat exchanger for cooling charge air, said exchanger comprises at least one flat tube for the circulation of a fluid, formed by assembling a pair of plates delimiting a first channel and a second circulation channel, such that said channels communicate with each other at one end to define a substantially U-shaped circulation of said fluid, characterized in that at least one plate comprises at least a first rib and a second rib generally shaped substantially in "L"; and in that said at least one first rib, respectively second rib, is arranged in said first channel, respectively second channel, of circulation.
Ledit échangeur peut en outre comporter une ou plusieurs caractéristiques suivantes, prises séparément ou en combinaison :  Said exchanger may further comprise one or more of the following characteristics, taken separately or in combination:
- ladite au moins une plaque comporte une nervure centrale, ladite nervure centrale formant saillie dans ledit au moins un tube plat pour délimiter les premier et second canaux de circulation;  said at least one plate comprises a central rib, said central rib projecting into said at least one flat tube for delimiting the first and second circulation channels;
- lesdites au moins une première et une second nervures sont symétriques par rapport à ladite nervure centrale;  said at least first and second ribs are symmetrical with respect to said central rib;
- ladite au moins une première nervure s'étend sensiblement au centre de la largeur dudit premier canal, et ladite au moins une seconde nervure s'étend sensiblement au centre de la largeur dudit second canal;  said at least one first rib extends substantially at the center of the width of said first channel, and said at least one second rib extends substantially at the center of the width of said second channel;
- ladite au moins une plaque comprend un orifice d'entrée de fluide agencé dans ledit premier canal de circulation et un orifice de sortie de fluide agencé dans ledit second canal de circulation, et ladite au moins une première nervure est sensiblement alignée par rapport au centre dudit orifice d'entrée et ladite au moins une seconde nervure est sensiblement alignée par rapport au centre dudit orifice de sortie;  said at least one plate comprises a fluid inlet orifice arranged in said first circulation channel and a fluid outlet orifice arranged in said second circulation channel, and said at least one first rib is substantially aligned with respect to the center. said inlet port and said at least one second rib is substantially aligned with respect to the center of said outlet port;
- lesdites nervures sensiblement en « L » présentent des bordures arrondies;  - Said ribs substantially "L" have rounded edges;
- ladite au moins une plaque présente une pluralité de bossages formant saillies dans le passage d'écoulement dudit fluide;  said at least one plate has a plurality of projections forming projections in the flow passage of said fluid;
- ladite au moins une plaque présente une largeur inférieure ou égale à 100mm. L'invention concerne aussi un tube plat pour échangeur thermique selon l'une quelconque des revendications précédentes, ledit tube étant formé par l'assemblage d'une paire de plaques en délimitant un premier canal et un second canal de circulation, tels que lesdits canaux communiquent entre eux à une extrémité pour définir une circulation sensiblement en « U » dudit fluide, caractérisé en ce qu'au moins une plaque comporte au moins une première nervure et une seconde nervure de forme générale sensiblement en « L »; ladite au moins une première nervure, respectivement seconde nervure, étant agencée dans ledit premier canal, respectivement second canal, de circulation. said at least one plate has a width less than or equal to 100 mm. The invention also relates to a flat tube for heat exchanger according to any one of the preceding claims, said tube being formed by the assembly of a pair of plates delimiting a first channel and a second channel of circulation, such as said channels. communicate with one another at one end to define a substantially U-shaped circulation of said fluid, characterized in that at least one plate comprises at least a first rib and a second rib of generally "L" -shaped general shape; said at least one first rib, respectively second rib, being arranged in said first channel, respectively second channel, circulation.
Ledit tube peut en outre comporter une ou plusieurs caractéristiques suivantes, prises séparément ou en combinaison :  Said tube may further comprise one or more of the following characteristics, taken separately or in combination:
- les deux plaques de ladite paire de plaques sont sensiblement identiques;  the two plates of said pair of plates are substantially identical;
- lesdites plaques comportent respectivement une nervure centrale, et la nervure centrale d'une première plaque est en contact avec la nervure centrale en vis-à-vis de la deuxième plaque;  - said plates respectively comprise a central rib, and the central rib of a first plate is in contact with the central rib vis-à-vis the second plate;
- lesdites première et seconde nervures de la première plaque sont respectivement en contact avec lesdites première et seconde nervures en vis-à-vis de la deuxième plaque.  said first and second ribs of the first plate are respectively in contact with said first and second ribs vis-à-vis the second plate.
L'invention concerne encore une plaque pour tube plat d'échangeur thermique délimitant un premier canal et un second canal de circulation, lesdits canaux communiquant entre eux à une extrémité de façon à définir une circulation sensiblement en « U » dudit fluide, caractérisée en ce que ladite plaque comporte au moins une première nervure et une seconde nervure de forme générale sensiblement en « L »; ladite au moins une première nervure, respectivement seconde nervure, étant agencée dans ledit premier canal, respectivement second canal, de circulation. The invention also relates to a plate for a heat exchanger flat tube delimiting a first channel and a second circulation channel, said channels communicating with one another at one end so as to define a substantially U-shaped circulation of said fluid, characterized in that said plate comprises at least a first rib and a second rib of generally "L" shape; said at least one first rib, respectively second rib, being arranged in said first channel, respectively second channel, circulation.
D'autres caractéristiques et avantages de l'invention apparaîtront plus clairement à la lecture de la description suivante, donnée à titre d'exemple illustratif et non limitatif, et des dessins annexés parmi lesquels : Other features and advantages of the invention will appear more clearly on reading the following description, given by way of illustrative example and not limiting, and appended drawings among which:
- la figure 1 représente une vue de côté d'un échangeur thermique à plaques,  FIG. 1 represents a side view of a plate heat exchanger;
- la figure 2 représente une plaque de l'échangeur de la figure 1. Dans ces figures, les éléments sensiblement identiques portent les mêmes références.  - Figure 2 shows a plate of the exchanger of Figure 1. In these figures, the substantially identical elements have the same references.
L'invention concerne un échangeur thermique, en particulier pour refroidir l'air de suralimentation pour moteur thermique, tel qu'un moteur de véhicule automobile.  The invention relates to a heat exchanger, in particular for cooling the supercharging air for a heat engine, such as a motor vehicle engine.
Un tel échangeur peut être un échangeur dit « air-eau », c'est-à-dire un échangeur dans lequel les fluides qui échangent de la chaleur sont l'air et l'eau. Dans le cas d'un refroidisseur d'air de suralimentation; l'eau est de préférence de l'eau du circuit de refroidissement dit "basse température" dudit moteur; il s'agit typiquement d'eau glycolée. La figure 1 représente, vu de côté, un échangeur thermique 1.  Such an exchanger may be an exchanger called "air-water", that is to say an exchanger in which the fluids that exchange heat are air and water. In the case of a charge air cooler; the water is preferably water from the so-called "low temperature" cooling circuit of said engine; it is typically brine. FIG. 1 represents, seen from the side, a heat exchanger 1.
L'échangeur 1 présente par exemple une forme générale sensiblement parallélépipédique.  The exchanger 1 has for example a generally parallelepipedal general shape.
L'échangeur 1 comprend un empilement de tubes plats 3.  The exchanger 1 comprises a stack of flat tubes 3.
Les tubes plats 3 peuvent être disposés en alternance avec des intercalaires 5. Un intercalaire 5 est par exemple formé à partir d'une feuille mince ondulée conductrice de la chaleur, dont les crêtes sont en contact alternativement avec les deux tubes plats 3 de part et d'autre de l'intercalaire 5.  The flat tubes 3 may be alternately arranged with interleaves 5. A spacer 5 is for example formed from a corrugated thin film heat-conductive, the ridges of which are in alternating contact with the two flat tubes 3 on the other hand. else of tab 5.
Un flux d'air peut circuler à travers les intercalaires 5, pour échanger de la chaleur, avec le fluide circulant dans les tubes plats 3. Les intercalaires 5 perturbent l'écoulement de l'air de façon à augmenter la surface d'échange.  An air flow can flow through the spacers 5 to exchange heat with the fluid flowing in the flat tubes 3. The spacers 5 disrupt the flow of air so as to increase the exchange surface.
Selon le mode de réalisation décrit, tous les tubes plats 3 sont identiques. According to the embodiment described, all the flat tubes 3 are identical.
Chaque tube est par exemple formé par l'assemblage d'une paire de plaques 7 en gard. L'échangeur 1 est donc du type à plaques.  Each tube is for example formed by assembling a pair of plates 7 in gard. The exchanger 1 is therefore of the plate type.
Les plaques 7 assemblées définissent entre elles un passage 9 pour l'écoulement d'un fluide, en particulier un fluide de refroidissement. Un tel passage 9 peut présenter une épaisseur sensiblement constante. The assembled plates 7 define between them a passage 9 for the flow a fluid, in particular a cooling fluid. Such a passage 9 may have a substantially constant thickness.
Une plaque 7 (mieux visible sur la figure 2) présente une forme générale rectangulaire avec une longueur L et une largeur 1.  A plate 7 (better visible in FIG. 2) has a generally rectangular shape with a length L and a width 1.
À titre d'exemple, la plaque 7 présente une largeur 1 inférieure ou égale à For example, the plate 7 has a width 1 less than or equal to
100mm. 100mm.
Et, la plaque 7 présente par exemple une longueur L comprise entre 120 mm et 280 mm.  And, the plate 7 has for example a length L between 120 mm and 280 mm.
Chaque plaque 7 comporte des orifices formant une entrée de fluide 11 pour introduire du fluide dans le passage 9 d'écoulement du fluide et une sortie de fluide 13 pour évacuer le fluide.  Each plate 7 has orifices forming a fluid inlet 11 for introducing fluid into the fluid flow passage 9 and a fluid outlet 13 for discharging the fluid.
Une plaque 7 comporte de plus au niveau de l'entrée de fluide 11 et de la sortie de fluide 13 des plaques 7 des renflements 15 (cf figure 1). Ces renflements 15 sont orientés vers l'extérieur du passage 9 d'écoulement de fluide.  A plate 7 further comprises at the level of the fluid inlet 11 and the fluid outlet 13 of the plates 7 of the bulges 15 (see FIG. 1). These bulges 15 are oriented towards the outside of the fluid flow passage 9.
Les renflements 15 d'une plaque 7 communiquent avec les renflements 15 d'une plaque 7 d'une paire de plaques 7 voisine. Du fait des renflements 15, l'empilement de tubes plats 3 crée, entre deux paires de plaques 7 voisines, un intervalle. Ces intervalles peuvent être garnis d'un intercalaire 5 tel que décrit précédemment.  The bulges 15 of a plate 7 communicate with the bulges 15 of a plate 7 of a pair of neighboring plates 7. Due to the bulges 15, the stack of flat tubes 3 creates, between two pairs of adjacent plates 7, a gap. These intervals may be lined with an interlayer 5 as described above.
En outre, comme on le constate sur la figure 1, l'échangeur 1 comporte respectivement deux tubulures d'entrée et de sortie 17, pour le passage d'un fluide. Ces tubulures 17 communiquent respectivement avec les renflements 15 et orifices associés 11,13 des plaques 7, pour permettre la circulation du fluide entre les plaques 7.  In addition, as can be seen in FIG. 1, the exchanger 1 comprises respectively two inlet and outlet pipes 17, for the passage of a fluid. These pipes 17 communicate respectively with the bulges 15 and associated orifices 11, 13 of the plates 7, to allow the circulation of the fluid between the plates 7.
Par ailleurs, selon le mode de réalisation illustré sur les figures 1 et 2, les plaques 7 sont réalisées à partir de tôle embouties. Furthermore, according to the embodiment illustrated in Figures 1 and 2, the plates 7 are made from stamped sheet metal.
De telles plaques 7 embouties présentent une forme sensiblement de cuvette. Chaque plaque 7 comporte un bord périphérique 19 formant un contour de la plaque 7.  Such stamped plates 7 have a substantially bowl shape. Each plate 7 has a peripheral edge 19 forming a contour of the plate 7.
Les plaques 7 d'une même paire sont réunies entre elles de façon étanche sur tout leur contour au niveau de leur bord périphérique 19 respectif pour définir un passage 9 pour l'écoulement du fluide. Les plaques 7 sont agencées de sorte que leurs concavités soient tournées l'une vers l'autre. The plates 7 of the same pair are joined together in a sealed manner over their entire contour at their respective peripheral edge 19 to define a passage 9 for the flow of the fluid. The plates 7 are arranged so that their concavities are facing each other.
On pourrait prévoir en variante une telle plaque emboutie 7 assemblée avec une plaque plane qui repose sur le contour périphérique 19 de la plaque 7 emboutie pour définir le passage 9 d'écoulement du fluide.  One could alternatively provide such a stamped plate 7 assembled with a flat plate which rests on the peripheral contour 19 of the plate 7 stamped to define the passage 9 of flow of the fluid.
Les plaques 7 sont reliées de façon étanche par exemple par brasage.  The plates 7 are sealingly connected, for example by brazing.
De plus, une plaque 7 emboutie, telle que l'illustre la figure 2, définit deux passes de circulation. In addition, a stamped plate 7, as shown in FIG. 2, defines two circulation passes.
A cet effet, la plaque 7 comporte une nervure centrale 21. Cette nervure centrale For this purpose, the plate 7 comprises a central rib 21. This central rib
21 est disposée sensiblement au centre de la largeur 1 d'une plaque 7. 21 is disposed substantially at the center of the width 1 of a plate 7.
Cette nervure centrale 21 est agencée sur la surface intérieure de la plaque, c'est- à-dire en regard du passage 9 d'écoulement de fluide, de sorte que la nervure centrale 21 forme une saillie dans le passage 9 d'écoulement du fluide.  This central rib 21 is arranged on the inner surface of the plate, that is to say facing the fluid flow passage 9, so that the central rib 21 forms a projection in the flow passage 9. fluid.
La nervure centrale 21 est une nervure longitudinale joignant deux plaques 7 d'une paire de manière à définir des passes de circulation pour le fluide.  The central rib 21 is a longitudinal rib joining two plates 7 of a pair so as to define circulation passes for the fluid.
Dans le cas d'un tube plat 3 formé par l'assemblage de deux plaques 7 embouties, la nervure centrale 21 de la première plaque 7 est maintenue en contact avec la nervure centrale 21 en regard de la deuxième plaque 7.  In the case of a flat tube 3 formed by the assembly of two stamped plates 7, the central rib 21 of the first plate 7 is kept in contact with the central rib 21 opposite the second plate 7.
Selon la variante avec une plaque 7 emboutie assemblée avec une plaque plane, cette dernière repose contre la nervure centrale 21 de la plaque 7 emboutie.  According to the variant with a plate 7 stamped assembled with a flat plate, the latter rests against the central rib 21 of the plate 7 stamped.
On crée ainsi une séparation dans le passage 9 d'écoulement du fluide.  This creates a separation in the flow passage 9 of the fluid.
Cette séparation délimite un premier canal de circulation 23 et un second canal de circulation 25 formant ainsi deux passes avec une circulation en « U » entre l'entrée 11 et la sortie 13 de fluide. La première passe est définie par le premier canal de circulation 23 et la deuxième passe est définie par le second canal de circulation 25.  This separation delimits a first circulation channel 23 and a second circulation channel 25 thus forming two passes with a "U" circulation between the inlet 11 and the fluid outlet 13. The first pass is defined by the first flow channel 23 and the second pass is defined by the second flow channel 25.
De plus, cette nervure centrale 21 peut présenter une extrémité arrondie 27.  In addition, this central rib 21 may have a rounded end 27.
Une telle plaque 7 comporte en outre au moins une première nervure 29 secondaire et au moins une seconde nervure 31 secondaire. Ces deux nervures secondaires 29 et 31 assurent une fonction de renfort mécanique de la plaque 7. Such a plate 7 further comprises at least a first secondary rib 29 and at least a second secondary rib 31. These two secondary ribs 29 and 31 provide a mechanical reinforcing function of the plate 7.
La première nervure 29 est agencée dans le premier canal de circulation 23 de façon à le diviser en deux sous-canaux 23 a et 23b.  The first rib 29 is arranged in the first circulation channel 23 so as to divide it into two sub-channels 23a and 23b.
De façon similaire, la seconde nervure 31 secondaire est agencée dans le second canal de circulation 25 de fluide, de façon à le diviser en deux sous-canaux 25 a et 25b.  Similarly, the second secondary rib 31 is arranged in the second fluid circulation channel 25 so as to divide it into two sub-channels 25a and 25b.
Un tel agencement des nervures secondaires 29 et 31 dans les canaux de circulation en « U » permet de canaliser l'écoulement du fluide dans le passage 9 d'écoulement de fluide.  Such an arrangement of the secondary ribs 29 and 31 in the "U" circulation channels makes it possible to channel the flow of the fluid in the fluid flow passage 9.
En outre, les nervures secondaires 29,31 présentent une forme générale sensiblement en « L ». Cette forme en « L » permet d'allier tenue mécanique et diminution de pertes de charge. En effet, en utilisant des nervures secondaires sensiblement en « L », la Demanderesse a constaté un meilleur compromis entre contrainte mécanique et perte de charges.  In addition, the secondary ribs 29,31 have a generally "L" shape. This "L" shape makes it possible to combine mechanical strength and reduction of pressure drops. Indeed, using secondary ribs substantially "L", the Applicant has found a better compromise between mechanical stress and loss of loads.
Par ailleurs, les nervures secondaires 29,31 sensiblement en « L » peuvent présenter des bordures arrondies, de façon à ne pas avoir d'angle vif, pour mieux équilibrer l'écoulement du fluide.  Furthermore, the secondary ribs 29, 31 substantially in "L" may have rounded edges, so as not to have a sharp angle, to better balance the flow of the fluid.
De plus, ces deux nervures sont donc agencées de part et d'autre de la nervure centrale 21.  In addition, these two ribs are arranged on either side of the central rib 21.
Plus précisément, la première nervure 29 et la seconde nervure 31 secondaires sont symétriques par rapport à la nervure centrale 21.  More precisely, the first rib 29 and the second secondary rib 31 are symmetrical with respect to the central rib 21.
En outre, pour un meilleur équilibrage du débit, les nervures secondaires 29 et 31 sont respectivement agencées sensiblement au centre, dans le sens de la largeur, du canal de circulation 23,25 associé. En effet, la première nervure 29 s'étend sensiblement au centre de la largeur du premier canal 23, et la seconde nervure 31 s'étend sensiblement au centre de la largeur du second canal 25.  In addition, for a better balancing of the flow, the secondary ribs 29 and 31 are respectively arranged substantially at the center, in the width direction, of the associated circulation channel 23, 25. Indeed, the first rib 29 extends substantially at the center of the width of the first channel 23, and the second rib 31 extends substantially at the center of the width of the second channel 25.
Par ailleurs, la première nervure est selon le mode de réalisation illustré sensiblement alignée par rapport au centre de l'orifice d'entrée 11.  Moreover, the first rib is in the illustrated embodiment substantially aligned with respect to the center of the inlet orifice 11.
De même la seconde nervure est sensiblement alignée par rapport au centre de l'orifice de sortie 13. Enfin, la plaque 7 peut encore présenter une multitude de bossages 33 sur sa surface intérieure. Ainsi, ces bossages 33 forment saillie dans le passage 9 d'écoulement du fluide. Similarly, the second rib is substantially aligned with respect to the center of the outlet orifice 13. Finally, the plate 7 may still have a multitude of bosses 33 on its inner surface. Thus, these bosses 33 project in the passage 9 of the fluid flow.
Les bossages 33 sont par exemple des points de brasage.  The bosses 33 are for example brazing points.
Ainsi, de telles plaques 7 avec les nervures secondaires 29,31 sensiblement en « L » sensiblement au milieu de chaque canal de circulation 23,25 de fluide permettent de renforcer la tenue mécanique de la plaque 7 tout en équilibrant l'écoulement du fluide. Thus, such plates 7 with the secondary ribs 29, 31 substantially in "L" substantially in the middle of each fluid circulation channel 23, 25 make it possible to reinforce the mechanical strength of the plate 7 while balancing the flow of the fluid.
Cet agencement est en particulier adapté pour les plaques 7 de largeur inférieure à 100mm.  This arrangement is particularly suitable for the plates 7 of width less than 100mm.
En effet, pour de telles plaques, la Demanderesse a constaté que l'utilisation de plaques en deux passes présente un meilleur compromis que l'utilisation de plaques en plusieurs passes; chaque passe étant formée par un canal de circulation. Et, la séparation des deux canaux de la plaque en deux passes à l'aide des nervures secondaires en « L » permet d'augmenter encore les performances en termes de tenue mécanique et pertes de charges.  Indeed, for such plates, the Applicant has found that the use of two-pass plates has a better compromise than the use of plates in several passes; each pass being formed by a circulation channel. And, the separation of the two channels of the plate in two passes using the secondary ribs in "L" can further increase the performance in terms of mechanical strength and losses.
En outre, la Demanderesse a constaté une réduction des contraintes mécaniques pouvant atteindre 35% en utilisant de telles plaques 7 selon l'invention, par rapport à des plaques embouties définissant deux passes mais ne présentant pas les nervures secondaires en « L » sensiblement au milieu des deux passes.  In addition, the Applicant has found a reduction in mechanical stresses of up to 35% by using such plates 7 according to the invention, compared to stamped plates defining two passes but not having the secondary ribs "L" substantially in the middle two passes.
Ce nouveau type de plaques 7 en deux passes subdivisées par des nervures en « L » permet donc d'augmenter encore les performances thermiques de l'échangeur 1.  This new type of plates 7 in two passes subdivided by ribs in "L" thus allows to further increase the thermal performance of the exchanger 1.

Claims

REVENDICATIONS
1. Échangeur thermique pour refroidissement d'air de suralimentation, ledit échangeur comprend au moins un tube plat (3) pour la circulation d'un fluide, formé par l'assemblage d'une paire de plaques (7) en délimitant un premier canal (23) et un second canal (25) de circulation, tels que lesdits canaux (23,25) communiquent entre eux à une extrémité pour définir une circulation sensiblement en « U » dudit fluide, caractérisé en ce que: - au moins une plaque (7) comporte au moins une première nervure (29) et une seconde nervure (31) de forme générale sensiblement en « L »; et en ce que 1. Heat exchanger for charge air cooling, said exchanger comprises at least one flat tube (3) for the circulation of a fluid, formed by the assembly of a pair of plates (7) delimiting a first channel (23) and a second channel (25) of circulation, such that said channels (23,25) communicate with one another at one end to define a substantially "U" -shaped circulation of said fluid, characterized in that: - at least one plate (7) comprises at least a first rib (29) and a second rib (31) of generally "L" shape; and in that
- ladite au moins une première nervure (29), respectivement seconde nervure (31), est agencée dans ledit premier canal (23), respectivement second canal (25), de circulation. - Said at least one first rib (29), respectively second rib (31), is arranged in said first channel (23), respectively second channel (25), circulation.
2. Échangeur selon la revendication 1, caractérisé en ce que ladite au moins une plaque (7) comporte une nervure centrale (21), ladite nervure centrale (21) formant saillie dans ledit au moins un tube plat (3) pour délimiter les premier (23) et second (25) canaux de circulation. 2. Exchanger according to claim 1, characterized in that said at least one plate (7) comprises a central rib (21), said central rib (21) projecting into said at least one flat tube (3) to delimit the first (23) and second (25) circulation channels.
3. Échangeur selon la revendication 2, caractérisé en ce que lesdites au moins une première (29) et seconde (31) nervures sont symétriques par rapport à ladite nervure centrale (21). 3. Exchanger according to claim 2, characterized in that said at least one first (29) and second (31) ribs are symmetrical with respect to said central rib (21).
4. Échangeur selon l'une quelconque des revendication précédentes, caractérisé en ce que ladite au moins une première nervure (29) s'étend sensiblement au centre de la largeur dudit premier canal (23), et en ce que ladite au moins une seconde nervure (31) s'étend sensiblement au centre de la largeur dudit second canal (25). 4. Exchanger according to any one of the preceding claims, characterized in that said at least one first rib (29) extends substantially at the center of the width of said first channel (23), and in that said at least one second rib (31) extends substantially at the center of the width of said second channel (25).
5. Échangeur selon l'une quelconque des revendications précédentes, caractérisé en ce que ladite au moins une plaque (7) : - comprend un orifice d'entrée (11) de fluide agencé dans ledit premier canal (23) de circulation, et un orifice de sortie (13) de fluide agencé dans ledit second canal (25) de circulation, et en ce que 5. Exchanger according to any one of the preceding claims, characterized in that said at least one plate (7): comprises a fluid inlet orifice (11) arranged in said first circulation channel (23), and a fluid outlet orifice (13) arranged in said second circulation channel (25), and in that
- ladite au moins une première nervure (29) est sensiblement alignée par rapport au centre dudit orifice d'entrée (11), et ladite au moins une seconde nervure (31) est sensiblement alignée par rapport au centre dudit orifice de sortie (13). said at least one first rib (29) is substantially aligned with respect to the center of said inlet orifice (11), and said at least one second rib (31) is substantially aligned with respect to the center of said outlet orifice (13) .
6. Échangeur selon l'une quelconque des revendications précédentes, caractérisé en ce que lesdites nervures (29,31) sensiblement en « L » présentent des bordures arrondies. 6. Exchanger according to any one of the preceding claims, characterized in that said ribs (29,31) substantially in "L" have rounded edges.
7. Échangeur selon l'une quelconque des revendications précédentes, caractérisé en ce que ladite au moins une plaque (7) présente une pluralité de bossages (33) formant saillies dans le passage d'écoulement dudit fluide. 7. Exchanger according to any one of the preceding claims, characterized in that said at least one plate (7) has a plurality of bosses (33) forming projections in the flow passage of said fluid.
8. Échangeur selon l'une quelconque des revendications précédentes, caractérisé en ce que ladite au moins une plaque (7) présente une largeur (1) inférieure ou égale à 100mm. 8. Exchanger according to any one of the preceding claims, characterized in that said at least one plate (7) has a width (1) less than or equal to 100mm.
9. Tube plat pour échangeur thermique selon l'une quelconque des revendications précédentes, ledit tube (3) étant formé par l'assemblage d'une paire de plaques (7) en délimitant un premier canal (23) et un second canal (25) de circulation, tels que lesdits canaux (23,25) communiquent entre eux à une extrémité pour définir une circulation sensiblement en « U » dudit fluide, caractérisé en ce qu'au moins une plaque (7) comporte au moins une première nervure (29) et une seconde nervure (31) de forme générale sensiblement en « L »; ladite au moins une première nervure (29), respectivement seconde nervure (31), étant agencée dans ledit premier canal (23), respectivement second canal (25), de circulation. 9. Flat tube for heat exchanger according to any one of the preceding claims, said tube (3) being formed by the assembly of a pair of plates (7) delimiting a first channel (23) and a second channel (25). ), such that said channels (23,25) communicate with each other at one end to define a substantially U-shaped circulation of said fluid, characterized in that at least one plate (7) comprises at least one first rib ( 29) and a second rib (31) of general shape substantially in "L"; said at least one first rib (29), respectively second rib (31) being arranged in said first channel (23), respectively second channel (25), circulation.
10. Tube plat selon la revendication 9, caractérisé en ce que les deux plaques (7) de ladite paire de plaques sont sensiblement identiques. 10. Flat tube according to claim 9, characterized in that the two plates (7) of said pair of plates are substantially identical.
11. Tube plat selon la revendication 10, caractérisé en ce que lesdites plaques (7) comportent respectivement une nervure centrale (21), et en ce que la nervure centrale (21) d'une première plaque (7) est en contact avec la nervure centrale (21) en vis-à-vis de la deuxième plaque (7). 11. Flat tube according to claim 10, characterized in that said plates (7) respectively comprise a central rib (21), and in that the central rib (21) of a first plate (7) is in contact with the central rib (21) vis-à-vis the second plate (7).
12. Tube plat selon l'une des revendications 10 ou 11, caractérisé en ce que lesdites première (29) et seconde (31) nervures de la première plaque (7) sont respectivement en contact avec lesdites première (29) et seconde (31) nervures en vis-à-vis de la deuxième plaque (7). 12. Flat tube according to one of claims 10 or 11, characterized in that said first (29) and second (31) ribs of the first plate (7) are respectively in contact with said first (29) and second (31) ) ribs vis-à-vis the second plate (7).
13. Plaque pour tube plat d'échangeur thermique selon l'une quelconque des revendications 9 à 12, délimitant un premier canal (23) et un second canal (25) de circulation, lesdits canaux (23,25) communiquant entre eux à une extrémité de façon à définir une circulation sensiblement en « U » dudit fluide, caractérisée en ce que ladite plaque (7) comporte au moins une première nervure (29) et une seconde nervure (31) de forme générale sensiblement en « L »; ladite au moins une première nervure (29), respectivement seconde nervure (31), étant agencée dans ledit premier canal (23), respectivement second canal (25), de circulation. Plate for a heat exchanger flat tube according to any one of claims 9 to 12, delimiting a first channel (23) and a second channel (25) for circulation, said channels (23, 25) communicating with each other at a distance from one another. end so as to define a substantially "U" flow of said fluid, characterized in that said plate (7) comprises at least a first rib (29) and a second rib (31) of generally "L" shape; said at least one first rib (29), respectively second rib (31) being arranged in said first channel (23), respectively second channel (25), circulation.
EP12737293.6A 2011-07-21 2012-07-20 Heat exchanger and corresponding flat tube and plate Withdrawn EP2734801A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1156645A FR2978236B1 (en) 2011-07-21 2011-07-21 THERMAL EXCHANGER, FLAT TUBE AND PLATE CORRESPONDING
PCT/EP2012/064334 WO2013011136A1 (en) 2011-07-21 2012-07-20 Heat exchanger and corresponding flat tube and plate

Publications (1)

Publication Number Publication Date
EP2734801A1 true EP2734801A1 (en) 2014-05-28

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EP12737293.6A Withdrawn EP2734801A1 (en) 2011-07-21 2012-07-20 Heat exchanger and corresponding flat tube and plate

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US (1) US20140345838A1 (en)
EP (1) EP2734801A1 (en)
JP (1) JP2014522959A (en)
CN (1) CN103930742A (en)
FR (1) FR2978236B1 (en)
MX (1) MX2014000859A (en)
WO (1) WO2013011136A1 (en)

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JP5884530B2 (en) * 2012-02-03 2016-03-15 富士通株式会社 RADIATOR AND ELECTRONIC DEVICE HAVING THE SAME
FR2999696B1 (en) * 2012-12-18 2018-09-14 Valeo Systemes Thermiques FLAT TUBE FOR EXHAUST AIR HEAT EXCHANGER AND HEAT EXCHANGER OF CORRESPONDING SUPERVISION AIR HEAT.
US9920686B2 (en) * 2015-09-28 2018-03-20 Hanon Systems Water-cooled charge air cooler with integrated multi-stage cooling
FR3050519B1 (en) 2016-04-25 2019-09-06 Novares France HEAT EXCHANGER OF PLASTIC MATERIAL AND VEHICLE COMPRISING THIS HEAT EXCHANGER
WO2019144212A1 (en) * 2018-01-29 2019-08-01 Dana Canada Corporation Structurally supported heat exchanger
FR3086376B1 (en) 2018-09-25 2020-09-04 Valeo Systemes Thermiques PLATE CONSTITUTING OF A HEAT EXCHANGER AND HEAT EXCHANGER INCLUDING AT LEAST ONE SUCH PLATE

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Also Published As

Publication number Publication date
CN103930742A (en) 2014-07-16
MX2014000859A (en) 2014-04-30
JP2014522959A (en) 2014-09-08
FR2978236A1 (en) 2013-01-25
WO2013011136A1 (en) 2013-01-24
FR2978236B1 (en) 2015-08-21
US20140345838A1 (en) 2014-11-27

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