WO2014016196A1 - Fin intended to disturb the flow of a fluid, heat exchanger comprising such a fin and method of manufacturing such a fin - Google Patents

Fin intended to disturb the flow of a fluid, heat exchanger comprising such a fin and method of manufacturing such a fin Download PDF

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Publication number
WO2014016196A1
WO2014016196A1 PCT/EP2013/065171 EP2013065171W WO2014016196A1 WO 2014016196 A1 WO2014016196 A1 WO 2014016196A1 EP 2013065171 W EP2013065171 W EP 2013065171W WO 2014016196 A1 WO2014016196 A1 WO 2014016196A1
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WO
WIPO (PCT)
Prior art keywords
fin
fluid
flap
meshes
metal strip
Prior art date
Application number
PCT/EP2013/065171
Other languages
French (fr)
Inventor
Nicolas Vallee
Joaquim GUITART
Original Assignee
Valeo Systemes Thermiques
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Valeo Systemes Thermiques filed Critical Valeo Systemes Thermiques
Priority to ES13739678.4T priority Critical patent/ES2617207T3/en
Priority to EP13739678.4A priority patent/EP2877800B1/en
Publication of WO2014016196A1 publication Critical patent/WO2014016196A1/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D53/00—Making other particular articles
    • B21D53/02—Making other particular articles heat exchangers or parts thereof, e.g. radiators, condensers fins, headers
    • B21D53/022—Making the fins
    • B21D53/025—Louvered fins
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D31/00—Other methods for working sheet metal, metal tubes, metal profiles
    • B21D31/04—Expanding other than provided for in groups B21D1/00 - B21D28/00, e.g. for making expanded metal
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
    • F28D1/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
    • F28D1/04—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits
    • F28D1/053—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being straight
    • F28D1/0535—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being straight the conduits having a non-circular cross-section
    • F28D1/05366—Assemblies of conduits connected to common headers, e.g. core type radiators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F1/00—Tubular elements; Assemblies of tubular elements
    • F28F1/10—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
    • F28F1/12—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element
    • F28F1/122—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and being formed of wires
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F1/00—Tubular elements; Assemblies of tubular elements
    • F28F1/10—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
    • F28F1/12—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element
    • F28F1/126—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element consisting of zig-zag shaped fins
    • F28F1/128—Fins with openings, e.g. louvered fins
    • 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
    • F28D2021/0084—Condensers

Definitions

  • the invention will find its applications in the field of heat exchangers, for example the heat exchangers of a motor vehicle.
  • Such fins consist of a metal strip provided with louvers for disrupting the flow of the fluid to further increase the heat exchange.
  • a fin intended to disturb the flow of a fluid, said first fluid, said fin consisting of a metal strip, characterized in that said metal strip comprises at least one portion of expanded metal having a surface comprising meshes, said mesh surface, said fin comprising at least one louver having a slot and a flap made in the mesh surface and intended to form a deflector of the flow of the first fluid.
  • the meshes of the expanded metal make it possible to disturb the flow of the first fluid and are thus intended to increase the efficiency of a heat exchange with a second circulating fluid, for example, in tubes in contact with the fin.
  • the metal strip including the expanded metal portion is further lighter than the solid metal strip.
  • the fin of the invention also has the advantage of comprising at least one louver for deflecting the flow of the first fluid.
  • the louver or louvers thus forces part of the flow of the first fluid to flow transversely to the channels defined by the metal strip.
  • the invention is particularly advantageous in that it combines the use of the expanded metal and louvers, that is to say the fact of having at least one shutter whose shutter comprises meshes.
  • said metal strip comprises corrugations.
  • the corrugations comprise upper and lower folds and flat walls interconnecting the upper and lower folds.
  • the fin then comprises a lateral direction defined by the direction of extension of the upper and lower folds, a transverse direction parallel to a height defined by the height of the corrugations and a longitudinal direction perpendicular to the plane defined by the lateral direction and the transverse direction. of the fin.
  • the folds may be continuous from one longitudinal edge of the fin to the other. Alternatively, they may be discontinuous.
  • the strip then consists of corrugated strips, parallel, having an offset in said longitudinal direction.
  • the fin is of the type known as Anglo-Saxon offset. In such a case, the louvers are defined by the expected offset between the bands.
  • the height of the corrugations is between 1 mm and 10 mm.
  • the louver or louvers are transverse to the lateral direction of the fin.
  • the louver or louvers extend longitudinally in a direction orthogonal to the lateral direction of the fin. In other words, they are orthogonal to the upper and lower folds.
  • said mesh surface and said one or more louvers is at the flat walls.
  • the upper and lower folds are intended to be in contact with tubes and / or heat exchanger plates.
  • the fin can thus, for example, be interposed between two tubes or two heat exchanger plates. It can also be placed inside a tube, between two of its walls.
  • said upper and / or lower folds are full. In other words, said upper and / or lower folds are devoid of meshes. Brazing between the folds and the tubes can thus be facilitated.
  • the fin comprises a plurality of louvers arranged parallel to each other on at least one of the flat walls of the fin.
  • the louvers are arranged, in particular, on all the flat walls of the fin.
  • the meshes of the flap extend in a first mean plane, said first mid-plane forming an angle between 0 ° and 35 ° with a second middle plane of the plane wall on which the flap is located.
  • the meshes are quadrilaterals, in particular lozenges, and defined by four branches defining between them an opening.
  • the opening is, for example, quadrilateral, in particular diamond.
  • said branches have a width of between 0.05 mm and 5 mm.
  • Said branches have, in particular, a width substantially equal to 0.25 mm.
  • the opening comprises a large diagonal length of between 0.1 mm and 10 mm.
  • the opening comprises a small diagonal length between 0.1 mm and 5 mm.
  • the dimensions of the flap are greater than the mesh size.
  • the flap has a substantially rectangular shape, the dimension of its small sides being between 0.5 mm and 5 mm, in particular 0.15 mm.
  • the component has, for example, at least two meshes.
  • the metal strip has a thickness of between 0.05 mm and 0.5 mm.
  • the stitches have a width of between 0.05 mm and 5 mm.
  • the metal strip is aluminum or aluminum alloy.
  • the invention also relates to a heat exchanger comprising at least one such fin.
  • Said exchanger comprises, for example, a bundle of tubes, the said fins being disposed between two adjacent tubes of the bundle.
  • the invention also relates to a method for manufacturing a fin intended to disturb the flow of a fluid and constituted by a metal strip comprising a expanded metal having a surface comprising meshes, said mesh surface, in which process:
  • the expanded metal is split so as to create a louver comprising a slot and a flap and intended to form a deflector of the flow of the first fluid.
  • Figure 1 is a schematic plan view of an embodiment of a heat exchanger comprising a fin according to the invention.
  • Figure 2 is a perspective view of a fin according to the invention.
  • Figure 3 is a top view of a metal strip for obtaining a fin according to the invention.
  • FIG. 4 is a diagrammatic side view of the fin of FIG. 2.
  • FIG. 5 is a detailed view of a portion of the fin shown in FIG.
  • FIG. 6 is a perspective view of a mesh of the metal strip of the fin of FIG.
  • FIG. 7 is a schematic view along section VII - VII of FIG. 4.
  • the invention finds its application, for example, in a heat exchanger, in particular for a motor vehicle, as represented in FIG.
  • This heat exchanger is, in particular, a condenser of an air conditioning loop of the passenger compartment of a vehicle.
  • radiators for cooling or vehicle heating charge air coolers, in particular a charge air cooler. water, or others.
  • the heat exchanger 1 may comprise a bundle of parallel tubes 2 whose ends 2A are connected in a fixed and sealed manner to manifolds 3, 4 through which passes a fluid flowing in the tubes 2.
  • manifolds 3 , 4 here comprise inlet and outlet flanges 6, which are themselves connected to input and output connectors 9.
  • the bundle and all or part of the manifolds are, for example, made of aluminum or alloy aluminum.
  • the tubes 2 have a flattened cross section and between these are arranged fins 7 of the bundle, increasing the heat exchange surface between the fluid flowing in the tubes 2 and another fluid, for example, an outside air flow. passing through the heat exchanger passing between the tubes 2, in a direction substantially perpendicular to said tubes 2.
  • the fin 7 is made of a strip 10.
  • the fin 7 is here corrugated and brazed to the tubes 2. In a variant, it could be flat and mechanically assembled
  • the strip 10 is, in particular, aluminum or aluminum alloy.
  • the corrugations 11 comprise upper 12 and lower 13 folds and flat walls 14 interconnecting the upper 12 and lower 13 folds.
  • the upper 12 and lower 13 folds are here in contact with the tubes 2 of the heat exchanger 1 , in particular between two adjacent tubes 2 of the tube bundle.
  • the metal strip 10 then defines circulation channels 50 guiding the flow of the first fluid through the bundle of tubes.
  • a lateral direction I defined by the direction of extension of the upper folds 12 and lower 13, that is to say here a direction perpendicular to the plane in which is shown in Figure 1;
  • the height H of the corrugations is here between 1 mm and 10 mm. This is the distance between the planes comprising the upper folds 12 and the lower folds 13 of a fin.
  • the metal strip 10 comprises at least one part of expanded metal having a surface comprising meshes, said mesh surface 15. This metal strip 10 has a thickness e between 0.05 mm and 0.5 mm, in particular from 0 , 15 mm.
  • the fin 7 comprises at least one louver 16 and in particular a plurality of louvers 16 each having a slot 17 and a flap 18.
  • the louvers 16 are formed in the mesh surface 15 and are intended forming a deflector of the flow of the first fluid when the latter through the beam. The louvers 16 thus allow the flow of first fluid to pass from one channel 50 to the other between two adjacent tubes of the beam.
  • this fin 7 it starts, for example, a flat metal strip comprising expanded metal parts as shown in Figure 3.
  • the method for obtaining a flat metal strip comprising expanded metal parts being well known, we do not detail it here.
  • This flat metal strip may comprise solid parts 19, that is to say parts without mesh. These solid portions 19 are obtained, for example, by stopping the process for manufacturing the expanded metal during a time interval. These solid parts 19 give, in particular, rigidity and resistance to the metal strip. In the example made, solid portions 19 alternate with mesh portions 20.
  • the flat metal strip is folded in order to create the corrugations 11. This folding step is carried out, for example, by passing the flat metal strip between two knobs located vis-à-vis and giving the shape of the desired undulations.
  • the flat metal strip is folded so that the solid parts 19 form the upper 12 and lower 13 folds of the fin and the mesh portions 20 form the flat walls 14 of the fin 7.
  • the upper folds 12 and lower 13 are thus full of material, that is to say without mesh surface. The brazing of the upper folds 12 and lower 13 to the tubes is thus facilitated.
  • the knobs comprise, for example, several folding disks arranged next to each other.
  • Each folding disc comprises teeth whose shape is complementary to that of the corrugations.
  • An angular offset of the disks also makes it possible to form the louvers as described above.
  • the expanded metal is split in such a way as to create the louver (s) 16 each comprising the slot 17 and the shutter 18 and intended to form a baffle for the flow of the first fluid, in particular starting from a flat-fed expanded metal strip which it comes waving at the same time as one forms said louvers.
  • FIGS 4 and 5 illustrate more detailed louvers 16 according to the invention.
  • the louvers 16 are here transverse to the lateral direction I of the fin 7. They extend longitudinally in a direction orthogonal to the lateral direction I of the fin 7.
  • the flat walls 14 are arranged transversely to the longitudinal direction L and here slightly inclined relative to a plane perpendicular to the longitudinal direction L.
  • the mesh surface 15 and the louvers 16 are located at the level of the flat walls 14.
  • the fin 7 comprises a plurality of louvers 16 arranged parallel to each other on at least one of the flat walls 14 of the fin 7 and, in particular, on all the plane walls 14 of the fin .
  • the flaps 18 extend in a plane slightly inclined with respect to the plane walls 14.
  • the plane in which the flaps 18 extend is the mean plane, said middle foreground and referenced M in FIG. the meshes 30 located on the flap 18.
  • the planes in which the flat walls extend 14 are the mean planes, said second planes means and referenced N in Figure 7, in which the meshes 30 extend. located on the flat walls 14.
  • the slots 17 cut in the mesh surfaces 15 then allow the fluid flow flowing between the tubes to pass from one channel 50 to the other in order to improve the heat exchange with the fluid circulating at the same time.
  • the shutters 18 present, for example, a substantially rectangular shape.
  • the flaps then comprise three sides linked to the flat surface and one side partially defining the slot 17.
  • the dimension of the small sides of the flap is, for example, between 0.5 mm and 5 mm.
  • each flap 18 comprises several meshes 30.
  • the flaps 18 comprise in particular two meshes 30 in the lateral direction I and eight mesh 30 in the transverse direction T.
  • the meshes 30 of the mesh surface 15 are here quadrilaterals, in particular diamonds, and defined by four branches 31, 32, 33, 34 defining between them an opening 35.
  • Such a mesh 30 is visible in more detail in FIG. branches 31, 32, 33, 34 of each mesh 30 have a width 11 of between 0.05 mm and 5 mm and in particular of 0.25 mm.
  • the opening 35 is of quadrilateral shape, in particular diamond, and comprises a large diagonal d1 of length between 0.1 mm and 10 mm and a small diagonal d2 of length between 0.1 mm and 5 mm.
  • the meshes 30 also comprise a large diagonal D1, corresponding to the large diagonal of the quadrilateral defined by the branches 31, 32, 33, 34, here of length substantially equal to 1 mm and a small diagonal D2, corresponding to the small diagonal of the quadrilateral defined by the branches 31, 32, 33, 34, here of length substantially equal to 0.9 mm.
  • the large and the small diagonal D1, D2 of the meshes 30 are measured in the middle of the intersections of the branches 31, 32, 33, 34.
  • FIG. 7 illustrates an aspect of the invention according to which the first mean plane M in which the flap 18 extends, makes an angle ⁇ between 0 ° and 35 ° with the second average plane N in which s' extends the flat wall 14 on which the flap 18 is located.

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

Abstract

The invention relates to a fin (7) intended to disturb the flow of a fluid, referred to as first fluid, said fin (7) being made of a metal tape (10), characterized in that said metal tape (10) comprises at least a part made of expanded metal having a surface comprising meshes, referred to as meshed surface (15), said fin (7) comprising at least one louver (16) comprising a slot (17) and a vane (18), which louver is made in the meshed surface (15) and intended to form a deflector of the stream of first fluid. The invention also relates to a heat exchanger comprising such a fin (7) and to a method of manufacturing such a fin (7).

Description

Ailette destinée à perturber l'écoulement d'un fluide, échanqeur de chaleur comprenant une telle ailette et procédé de fabrication d'une telle ailette.  Flap intended to disturb the flow of a fluid, a heat exchanger comprising such a fin and a method of manufacturing such a fin.
L'invention trouvera ses applications dans le domaine des échangeurs de chaleur, par exemple les échangeurs de chaleur de véhicule automobile. The invention will find its applications in the field of heat exchangers, for example the heat exchangers of a motor vehicle.
Dans ce domaine, il est connu d'utiliser des ailettes augmentant la surface d'échange thermique et donc l'efficacité des échangeurs. De telles ailettes sont constituées d'un feuillard métallique muni de persiennes permettant de perturber l'écoulement du fluide pour augmenter encore l'échange de chaleur. In this field, it is known to use fins increasing the heat exchange surface and therefore the efficiency of the heat exchangers. Such fins consist of a metal strip provided with louvers for disrupting the flow of the fluid to further increase the heat exchange.
Il existe cependant un besoin d'améliorer la situation et l'invention propose à cet effet une ailette destinée à perturber l'écoulement d'un fluide, dit premier fluide, ladite ailette étant constituée d'un feuillard métallique, caractérisé par le fait que ledit feuillard métallique comprend au moins une partie de métal déployé présentant une surface comprenant des mailles, dite surface maillée, ladite ailette comprenant au moins une persienne comportant une fente et un volet, réalisée dans la surface maillée et destinée à former un déflecteur du flux du premier fluide. Les mailles du métal déployé permettent de perturber l'écoulement du premier fluide et sont ainsi destinées à augmenter l'efficacité d'un échange thermique avec un deuxième fluide circulant, par exemple, dans des tubes au contact de l'ailette. Le feuillard métallique comprenant la partie de métal déployé est en outre plus léger que le feuillard métallique plein. However, there is a need to improve the situation and the invention proposes for this purpose a fin intended to disturb the flow of a fluid, said first fluid, said fin consisting of a metal strip, characterized in that said metal strip comprises at least one portion of expanded metal having a surface comprising meshes, said mesh surface, said fin comprising at least one louver having a slot and a flap made in the mesh surface and intended to form a deflector of the flow of the first fluid. The meshes of the expanded metal make it possible to disturb the flow of the first fluid and are thus intended to increase the efficiency of a heat exchange with a second circulating fluid, for example, in tubes in contact with the fin. The metal strip including the expanded metal portion is further lighter than the solid metal strip.
L'ailette de l'invention présente également l'avantage de comprendre au moins une persienne destinée à dévier l'écoulement du premier fluide. La ou les persiennes force ainsi une partie du flux du premier fluide à circuler transversalement aux canaux définis par le feuillard métallique. The fin of the invention also has the advantage of comprising at least one louver for deflecting the flow of the first fluid. The louver or louvers thus forces part of the flow of the first fluid to flow transversely to the channels defined by the metal strip.
L'invention est particulièrement avantageuse dans le sens qu'elle combine l'utilisation du métal déployé et des persiennes, c'est-à-dire le fait d'avoir au moins une persienne dont le volet comprend des mailles. Selon un aspect de l'invention, ledit feuillard métallique comprend des ondulations. The invention is particularly advantageous in that it combines the use of the expanded metal and louvers, that is to say the fact of having at least one shutter whose shutter comprises meshes. According to one aspect of the invention, said metal strip comprises corrugations.
Selon un exemple de réalisation de l'invention, les ondulations comprennent des plis supérieurs et inférieurs et des parois planes reliant entre eux les plis supérieurs et inférieurs. L'ailette comprend alors une direction latérale définie par le sens d'extension des plis supérieurs et inférieurs, une direction transversale parallèle à une hauteur définie par la hauteur des ondulations et une direction longitudinale perpendiculaire au plan défini par la direction latérale et la direction transversale de l'ailette. According to an exemplary embodiment of the invention, the corrugations comprise upper and lower folds and flat walls interconnecting the upper and lower folds. The fin then comprises a lateral direction defined by the direction of extension of the upper and lower folds, a transverse direction parallel to a height defined by the height of the corrugations and a longitudinal direction perpendicular to the plane defined by the lateral direction and the transverse direction. of the fin.
Les plis pourront être continus d'un bord longitudinal de l'ailette à l'autre. En variante, ils pourront être discontinus. Autrement dit, le feuillard est alors constitué de bandes ondulées, parallèles, présentant un décalage selon ladite direction longitudinale. Encore autrement dit, l'ailette est du type qualifié du terme anglo-saxon d'offset. Dans un tel cas, les persiennes sont définies par le décalage prévu entre les bandes. The folds may be continuous from one longitudinal edge of the fin to the other. Alternatively, they may be discontinuous. In other words, the strip then consists of corrugated strips, parallel, having an offset in said longitudinal direction. In other words, the fin is of the type known as Anglo-Saxon offset. In such a case, the louvers are defined by the expected offset between the bands.
Avantageusement, la hauteur des ondulations est comprise entre 1 mm et 10 mm. Advantageously, the height of the corrugations is between 1 mm and 10 mm.
Dans une forme particulière de l'invention, la ou les persiennes sont transversales à la direction latérale de l'ailette. De manière avantageuse, la ou les persiennes s'étendent longitudinalement selon une direction orthogonale à la direction latérale de l'ailette. Autrement dit, elles sont orthogonales aux plis supérieurs et inférieurs. In a particular embodiment of the invention, the louver or louvers are transverse to the lateral direction of the fin. Advantageously, the louver or louvers extend longitudinally in a direction orthogonal to the lateral direction of the fin. In other words, they are orthogonal to the upper and lower folds.
Selon un aspect de l'invention, ladite surface maillée et la ou lesdites persiennes se situe au niveau des parois planes. According to one aspect of the invention, said mesh surface and said one or more louvers is at the flat walls.
Selon un exemple de réalisation, les plis supérieurs et inférieurs sont destinés à être en contact avec des tubes et/ou plaques d'échangeur de chaleur. L'ailette peut ainsi, par exemple, être intercalée entre deux tubes ou deux plaques d'échangeur de chaleur. Elle pourra aussi être placée à l'intérieur d'un tube, entre deux de ses parois. Avantageusement, lesdits plis supérieurs et/ou inférieurs sont pleins. Autrement dit, lesdits plis supérieurs et/ou inférieurs sont dépourvus de mailles. Le brasage entre les plis et les tubes peut ainsi être facilité. According to an exemplary embodiment, the upper and lower folds are intended to be in contact with tubes and / or heat exchanger plates. The fin can thus, for example, be interposed between two tubes or two heat exchanger plates. It can also be placed inside a tube, between two of its walls. Advantageously, said upper and / or lower folds are full. In other words, said upper and / or lower folds are devoid of meshes. Brazing between the folds and the tubes can thus be facilitated.
Dans une forme de réalisation de l'invention, l'ailette comprend une pluralité de persiennes disposées parallèlement entre elles sur au moins une des parois planes de l'ailette. Les persiennes sont disposées, notamment, sur toutes les parois planes de l'ailette. In one embodiment of the invention, the fin comprises a plurality of louvers arranged parallel to each other on at least one of the flat walls of the fin. The louvers are arranged, in particular, on all the flat walls of the fin.
Selon un aspect de l'invention, les mailles du volet s'étendent selon un premier plan moyen, ledit premier plan moyen faisant un angle compris entre 0° et 35° avec un second plan moyen de la paroi plane sur laquelle le volet est situé. Selon un exemple de réalisation, les mailles sont des quadrilatères, notamment des losanges, et définies par quatre branches définissant entre elles une ouverture. L'ouverture est, par exemple, quadrilatère, notamment losange. According to one aspect of the invention, the meshes of the flap extend in a first mean plane, said first mid-plane forming an angle between 0 ° and 35 ° with a second middle plane of the plane wall on which the flap is located. . According to an exemplary embodiment, the meshes are quadrilaterals, in particular lozenges, and defined by four branches defining between them an opening. The opening is, for example, quadrilateral, in particular diamond.
Avantageusement, lesdites branches présentent une largeur comprise entre 0,05 mm et 5 mm. Lesdites branches présentent, notamment, une largeur sensiblement égale à 0,25 mm. Advantageously, said branches have a width of between 0.05 mm and 5 mm. Said branches have, in particular, a width substantially equal to 0.25 mm.
Selon une forme de réalisation de l'invention, l'ouverture comprend une grande diagonale de longueur comprise entre 0,1 mm et 10 mm. Avantageusement, l'ouverture comprend une petite diagonale de longueur comprise entre 0,1 mm et 5 mm. According to one embodiment of the invention, the opening comprises a large diagonal length of between 0.1 mm and 10 mm. Advantageously, the opening comprises a small diagonal length between 0.1 mm and 5 mm.
Selon un aspect de l'invention, les dimensions du volet sont supérieures aux dimensions des mailles. According to one aspect of the invention, the dimensions of the flap are greater than the mesh size.
Selon un exemple de réalisation de l'invention, le volet présente une forme sensiblement rectangulaire, la dimension de ses petits cotés étant comprise entre 0,5 mm et 5 mm, en particulier 0,15 mm. Le volet présente, par exemple, au moins deux mailles. Selon un aspect de l'invention, le feuillard métallique présente une épaisseur comprise entre 0.05 mm et 0.5 mm. Selon un aspect de l'invention, les mailles ont une largeur comprise entre 0.05 mm et 5 mm. According to an exemplary embodiment of the invention, the flap has a substantially rectangular shape, the dimension of its small sides being between 0.5 mm and 5 mm, in particular 0.15 mm. The component has, for example, at least two meshes. According to one aspect of the invention, the metal strip has a thickness of between 0.05 mm and 0.5 mm. According to one aspect of the invention, the stitches have a width of between 0.05 mm and 5 mm.
Avantageusement, le feuillard métallique est en aluminium ou en alliage d'aluminium. Advantageously, the metal strip is aluminum or aluminum alloy.
L'invention concerne aussi un échangeur de chaleur comprenant au moins une telle ailette. Ledit échangeur comprend, par exemple, un faisceau de tubes, la ou lesdites ailettes étant disposées entre deux tubes adjacents du faisceau. L'invention concerne également un procédé de fabrication d'une ailette destinée à perturber l'écoulement d'un fluide et constituée d'un feuillard métallique comprenant un métal déployé présentant une surface comprenant des mailles, dite surface maillée, procédé dans lequel : The invention also relates to a heat exchanger comprising at least one such fin. Said exchanger comprises, for example, a bundle of tubes, the said fins being disposed between two adjacent tubes of the bundle. The invention also relates to a method for manufacturing a fin intended to disturb the flow of a fluid and constituted by a metal strip comprising a expanded metal having a surface comprising meshes, said mesh surface, in which process:
- on fend le métal déployé de manière à créer une persienne comprenant une fente et un volet et destinée à former un déflecteur du flux du premier fluide.  the expanded metal is split so as to create a louver comprising a slot and a flap and intended to form a deflector of the flow of the first fluid.
Les figures annexées feront bien comprendre comment l'invention peut être réalisée. Sur ces figures, des références identiques désignent des éléments semblables. The appended figures will make it clear how the invention can be realized. In these figures, identical references designate similar elements.
La figure 1 est une vue schématique en plan d'un exemple de réalisation d'un échangeur de chaleur comprenant une ailette conforme à l'invention. Figure 1 is a schematic plan view of an embodiment of a heat exchanger comprising a fin according to the invention.
La figure 2 est une vue en perspective d'une ailette selon l'invention. Figure 2 is a perspective view of a fin according to the invention.
La figure 3 est une vue de dessus d'un feuillard métallique servant à l'obtention d'une ailette selon l'invention. Figure 3 is a top view of a metal strip for obtaining a fin according to the invention.
La figure 4 est une vue schématique de coté de l'ailette de la figure 2. La figure 5 est une vue détaillée d'une partie de l'ailette représentée à la figureFIG. 4 is a diagrammatic side view of the fin of FIG. 2. FIG. 5 is a detailed view of a portion of the fin shown in FIG.
4. La figure 6 est une vue en perspective d'une maille du feuillard métallique de l'ailette de la figure 2. 4. FIG. 6 is a perspective view of a mesh of the metal strip of the fin of FIG.
La figure 7 est une vue schématique selon la coupe VII - VII de la figure 4. L'invention trouve son application, par exemple, dans un échangeur de chaleur, notamment pour véhicule automobile, tel que représenté sur la figure 1 . Cet échangeur de chaleur est, notamment, un condenseur d'une boucle de climatisation de l'habitacle d'un véhicule. Cependant, d'autres applications de ces échangeurs chaleur sont également envisageables sans sortir du cadre de l'invention tels que des radiateurs de refroidissement ou de chauffage de véhicule, des refroidisseurs d'air de suralimentation, en particulier un refroidisseur d'air de suralimentation à eau, ou autres. FIG. 7 is a schematic view along section VII - VII of FIG. 4. The invention finds its application, for example, in a heat exchanger, in particular for a motor vehicle, as represented in FIG. This heat exchanger is, in particular, a condenser of an air conditioning loop of the passenger compartment of a vehicle. However, other applications of these heat exchangers are also conceivable without departing from the scope of the invention such as radiators for cooling or vehicle heating, charge air coolers, in particular a charge air cooler. water, or others.
L'échangeur de chaleur 1 pourra comprendre un faisceau de tubes parallèles 2 dont les extrémités 2A sont reliées, de manière fixe et étanche, à des boites collectrices 3, 4 à travers lesquelles passe un fluide circulant dans les tubes 2. Ces boites collectrices 3, 4 comprennent ici des brides d'entrée 5 et de sortie 6, elles mêmes connectées à des raccords d'entrée 8 et de sortie 9. Le faisceau et tout ou partie des boîtes collectrices sont, par exemple, en aluminium ou alliage d'aluminium. The heat exchanger 1 may comprise a bundle of parallel tubes 2 whose ends 2A are connected in a fixed and sealed manner to manifolds 3, 4 through which passes a fluid flowing in the tubes 2. These manifolds 3 , 4 here comprise inlet and outlet flanges 6, which are themselves connected to input and output connectors 9. The bundle and all or part of the manifolds are, for example, made of aluminum or alloy aluminum.
Les tubes 2 ont une section transversale aplatie et entre ceux-ci sont agencées des ailettes 7 du faisceau, augmentant la surface d'échange thermique entre le fluide circulant dans les tubes 2 et un autre fluide, par exemple, un flux d'air extérieur traversant l'échangeur de chaleur en passant entre les tubes 2, selon une direction sensiblement perpendiculaire auxdits tubes 2. The tubes 2 have a flattened cross section and between these are arranged fins 7 of the bundle, increasing the heat exchange surface between the fluid flowing in the tubes 2 and another fluid, for example, an outside air flow. passing through the heat exchanger passing between the tubes 2, in a direction substantially perpendicular to said tubes 2.
L'ailette 7 est constituée d'un feuillard 10. L'ailette 7 est ici ondulée et brasée aux tubes 2. En variante, elle pourrait être plane et assemblée mécaniquement audit tube 2. Comme le reste du faisceau, le feuillard 10 est, notamment, en aluminium ou en alliage d'aluminium. The fin 7 is made of a strip 10. The fin 7 is here corrugated and brazed to the tubes 2. In a variant, it could be flat and mechanically assembled Like the rest of the bundle, the strip 10 is, in particular, aluminum or aluminum alloy.
Les ondulations 1 1 comprennent des plis supérieurs 12 et inférieurs 13 et des parois planes 14 reliant entre eux les plis supérieurs 12 et inférieurs 13. Les plis supérieurs 12 et inférieurs 13 sont ici en contact avec les tubes 2 de l'échangeur de chaleur 1 , en particulier entre deux tubes 2 adjacents du faisceau de tube. Le feuillard métallique 10 définit alors des canaux 50 de circulation guidant l'écoulement du premier fluide à travers le faisceau de tubes. The corrugations 11 comprise upper 12 and lower 13 folds and flat walls 14 interconnecting the upper 12 and lower 13 folds. The upper 12 and lower 13 folds are here in contact with the tubes 2 of the heat exchanger 1 , in particular between two adjacent tubes 2 of the tube bundle. The metal strip 10 then defines circulation channels 50 guiding the flow of the first fluid through the bundle of tubes.
On définit trois directions de l'ailette 7 par rapport aux ondulations 1 1 de l'ailette 7 : Three directions of the fin 7 are defined with respect to the corrugations 11 of the fin 7:
- une direction latérale I définie par le sens d'extension des plis supérieurs 12 et inférieurs 13, c'est-à-dire ici une direction perpendiculaire au plan dans lequel est représentée la figure 1 ;  - A lateral direction I defined by the direction of extension of the upper folds 12 and lower 13, that is to say here a direction perpendicular to the plane in which is shown in Figure 1;
- une direction transversale T parallèle à une hauteur de l'ailette 7 définie par la hauteur H des ondulations ;  a transverse direction T parallel to a height of the fin 7 defined by the height H of the corrugations;
- une direction longitudinale L perpendiculaire au plan défini par la direction latérale I et la direction transversale T de l'ailette 7.  a longitudinal direction L perpendicular to the plane defined by the lateral direction I and the transverse direction T of the fin 7.
La hauteur H des ondulations est ici comprise entre 1 mm et 10 mm. Il s'agit de la distance entre les plans comprenant les plis supérieurs 12 et les plis inférieurs 13 d'une ailette. Comme illustré à la figure 2, le feuillard métallique 10 comprend au moins une partie de métal déployé présentant une surface comprenant des mailles, dite surface maillée 15. Ce feuillard métallique 10 présente une épaisseur e comprise entre 0.05 mm et 0.5 mm, notamment de 0,15 mm. Cette figure permet également d'illustrer le fait que l'ailette 7 comprend au moins une persienne 16 et notamment une pluralité de persiennes 16 comportant chacune une fente 17 et un volet 18. Les persiennes 16 sont réalisées dans la surface maillée 15 et sont destinées à former un déflecteur du flux du premier fluide lorsque ce dernier traverse le faisceau. Les persiennes 16 permettent ainsi au flux du premier fluide de passer d'un canal 50 à l'autre entre deux tubes adjacents du faisceau. The height H of the corrugations is here between 1 mm and 10 mm. This is the distance between the planes comprising the upper folds 12 and the lower folds 13 of a fin. As illustrated in FIG. 2, the metal strip 10 comprises at least one part of expanded metal having a surface comprising meshes, said mesh surface 15. This metal strip 10 has a thickness e between 0.05 mm and 0.5 mm, in particular from 0 , 15 mm. This figure also serves to illustrate that the fin 7 comprises at least one louver 16 and in particular a plurality of louvers 16 each having a slot 17 and a flap 18. The louvers 16 are formed in the mesh surface 15 and are intended forming a deflector of the flow of the first fluid when the latter through the beam. The louvers 16 thus allow the flow of first fluid to pass from one channel 50 to the other between two adjacent tubes of the beam.
Afin d'obtenir cette ailette 7, on part, par exemple, d'un feuillard métallique plan comprenant des parties de métal déployé comme illustré à la figure 3. Le procédé d'obtention d'un feuillard métallique plan comprenant des parties de métal déployé étant bien connu, nous ne le détaillons pas ici. In order to obtain this fin 7, it starts, for example, a flat metal strip comprising expanded metal parts as shown in Figure 3. The method for obtaining a flat metal strip comprising expanded metal parts being well known, we do not detail it here.
Ce feuillard métallique plan peut comprendre des parties pleines 19, c'est-à- dire des parties dépourvues de maillage. On obtient ces parties pleines 19, par exemple, en stoppant le procédé de fabrication du métal déployé pendant un intervalle de temps. Ces parties pleines 19 donnent, notamment, de la rigidité et de la résistance au feuillard métallique. Dans l'exemple réalisé, des parties pleines 19 alternent avec des parties maillées 20. This flat metal strip may comprise solid parts 19, that is to say parts without mesh. These solid portions 19 are obtained, for example, by stopping the process for manufacturing the expanded metal during a time interval. These solid parts 19 give, in particular, rigidity and resistance to the metal strip. In the example made, solid portions 19 alternate with mesh portions 20.
Lors de la fabrication de l'ailette 7, on plie le feuillard métallique plan afin de créer les ondulations 1 1 . Cette étape de pliage se réalise, par exemple, en faisant passer le feuillard métallique plan entre deux molettes situées en vis-à-vis et donnant la forme des ondulations souhaitée. Selon une forme avantageuse de l'invention, on plie le feuillard métallique plan de sorte que les parties pleines 19 forment les plis supérieurs 12 et inférieurs 13 de l'ailette et les parties maillées 20 forment les parois planes 14 de l'ailette 7. Les plis supérieurs 12 et inférieurs 13 sont ainsi pleins de matière, c'est-à-dire dépourvus de surface maillée. Le brasage des plis supérieurs 12 et inférieurs 13 aux tubes est ainsi facilité. During the manufacture of the fin 7, the flat metal strip is folded in order to create the corrugations 11. This folding step is carried out, for example, by passing the flat metal strip between two knobs located vis-à-vis and giving the shape of the desired undulations. According to an advantageous form of the invention, the flat metal strip is folded so that the solid parts 19 form the upper 12 and lower 13 folds of the fin and the mesh portions 20 form the flat walls 14 of the fin 7. The upper folds 12 and lower 13 are thus full of material, that is to say without mesh surface. The brazing of the upper folds 12 and lower 13 to the tubes is thus facilitated.
De manière également connu, les molettes comprennent, par exemple, plusieurs disques de pliage disposés les uns à coté des autres. Chaque disque de pliage comprend des dents dont la forme est complémentaire de celle des ondulations. Ainsi, lorsque le feuillard métallique plan passe entre les deux molettes, il ressort avec la forme des ondulations souhaitées. Un décalage angulaire des disques permet en outre de former les persiennes telles que décrites plus haut. Ainsi, selon une même étape de fabrication on peut créer les ondulations et les persiennes, c'est-à-dire passer du feuillard métallique plan représenté sur la figure 3 à l'ailette 7 conforme à l'invention de la figure 2. Ainsi, selon le procédé de fabrication de l'ailette 7 selon l'invention : Also known, the knobs comprise, for example, several folding disks arranged next to each other. Each folding disc comprises teeth whose shape is complementary to that of the corrugations. Thus, when the metal foil plane passes between the two wheels, it emerges with the shape of the desired undulations. An angular offset of the disks also makes it possible to form the louvers as described above. Thus, according to the same manufacturing step, the undulations and the shutters can be created, that is to say from the flat metal strip shown in FIG. 3 to the fin 7 according to the invention of FIG. according to the method of manufacturing the fin 7 according to the invention:
- on fend le métal déployé de manière à créer la ou les persiennes 16 comprenant chacune la fente 17 et le volet 18 et destinées à former un déflecteur du flux du premier fluide, notamment en partant d'un feuillard de métal déployé alimenté à plat que l'on vient onduler en même temps que l'on forme lesdites persiennes.  the expanded metal is split in such a way as to create the louver (s) 16 each comprising the slot 17 and the shutter 18 and intended to form a baffle for the flow of the first fluid, in particular starting from a flat-fed expanded metal strip which it comes waving at the same time as one forms said louvers.
Les figures 4 et 5 permettent d'illustrer de manière plus détaillées les persiennes 16 selon l'invention. Figures 4 and 5 illustrate more detailed louvers 16 according to the invention.
Les persiennes 16 sont ici transversales à la direction latérale I de l'ailette 7. Elles s'étendent longitudinalement selon une direction orthogonale à la direction latérale I de l'ailette 7. The louvers 16 are here transverse to the lateral direction I of the fin 7. They extend longitudinally in a direction orthogonal to the lateral direction I of the fin 7.
Les parois planes 14 sont disposées transversalement à la direction longitudinale L et ici de manière légèrement inclinée par rapport à un plan perpendiculaire à la direction longitudinale L. La surface maillée 15 et les persiennes 16 se situent au niveau des parois planes 14. The flat walls 14 are arranged transversely to the longitudinal direction L and here slightly inclined relative to a plane perpendicular to the longitudinal direction L. The mesh surface 15 and the louvers 16 are located at the level of the flat walls 14.
Comme représenté sur les figures 4 et 5, l'ailette 7 comprend une pluralité de persiennes 16 disposées parallèlement entre elles sur au moins une des parois planes 14 de l'ailette 7 et, notamment, sur toutes les parois planes 14 de l'ailette. Les volets 18 s'étendent dans un plan légèrement incliné par rapport aux parois planes 14. Le plan dans lequel s'étendent les volets 18 est le plan moyen, dit premier plan moyen et référencé M sur la figure 7, dans lequel s'étendent les mailles 30 située sur le volet 18. De la même manière, les plans dans lesquels s'étendent les parois planes 14 sont les plans moyens, dit deuxièmes plans moyens et référencés N sur la figure 7, dans lesquels s'étendent les mailles 30 situées sur les parois planes 14. Les fentes 17 taillées dans les surfaces maillées 15 permettent alors au flux fluide circulant entre le tubes de passer d'un canal 50 à l'autre afin d'améliorer l'échange thermique avec le fluide circulant à l'intérieur des tubes. Les volets 18 présentent, par exemple, une forme sensiblement rectangulaire. Les volets comprennent alors trois cotés liés à la surface plane et un coté définissant en partie la fente 17. La dimension des petits cotés du volet est, par exemple, comprise entre 0,5 mm et 5 mm. As represented in FIGS. 4 and 5, the fin 7 comprises a plurality of louvers 16 arranged parallel to each other on at least one of the flat walls 14 of the fin 7 and, in particular, on all the plane walls 14 of the fin . The flaps 18 extend in a plane slightly inclined with respect to the plane walls 14. The plane in which the flaps 18 extend is the mean plane, said middle foreground and referenced M in FIG. the meshes 30 located on the flap 18. In the same way, the planes in which the flat walls extend 14 are the mean planes, said second planes means and referenced N in Figure 7, in which the meshes 30 extend. located on the flat walls 14. The slots 17 cut in the mesh surfaces 15 then allow the fluid flow flowing between the tubes to pass from one channel 50 to the other in order to improve the heat exchange with the fluid circulating at the same time. inside the tubes. The shutters 18 present, for example, a substantially rectangular shape. The flaps then comprise three sides linked to the flat surface and one side partially defining the slot 17. The dimension of the small sides of the flap is, for example, between 0.5 mm and 5 mm.
Les dimensions du volet 18 sont ici supérieures aux dimensions des mailles 30. En effet, chaque volet 18 comprend plusieurs mailles 30. Dans l'exemple illustré à la figure 4, les volets 18 comprennent notamment deux mailles 30 selon la direction latérale I et huit mailles 30 selon la direction transversale T. The dimensions of the flap 18 are here greater than the mesh size 30. In fact, each flap 18 comprises several meshes 30. In the example illustrated in FIG. 4, the flaps 18 comprise in particular two meshes 30 in the lateral direction I and eight mesh 30 in the transverse direction T.
Les mailles 30 de la surface maillée 15 sont ici quadrilatères, notamment losange, et définies par quatre branches 31 , 32, 33, 34 définissant entre elles une ouverture 35. Une telle maille 30 est visible de façon plus détaillée sur la figure 6. Les branches 31 , 32, 33, 34 de chaque maille 30 présentent une largeur 11 comprise entre 0,05 mm et 5 mm et notamment de 0,25 mm. L'ouverture 35 est de forme quadrilatère, notamment losange, et comprend une grande diagonale d1 de longueur comprise entre 0,1 mm et 10 mm et une petite diagonale d2 de longueur comprise entre 0,1 mm et 5 mm. The meshes 30 of the mesh surface 15 are here quadrilaterals, in particular diamonds, and defined by four branches 31, 32, 33, 34 defining between them an opening 35. Such a mesh 30 is visible in more detail in FIG. branches 31, 32, 33, 34 of each mesh 30 have a width 11 of between 0.05 mm and 5 mm and in particular of 0.25 mm. The opening 35 is of quadrilateral shape, in particular diamond, and comprises a large diagonal d1 of length between 0.1 mm and 10 mm and a small diagonal d2 of length between 0.1 mm and 5 mm.
Les mailles 30 comprennent également une grande diagonale D1 , correspondant à la grande diagonale du quadrilatère défini par les branches 31 , 32, 33, 34, ici de longueur sensiblement égale à 1 mm et une petite diagonale D2, correspondant à la petite diagonale du quadrilatère défini par les branches 31 , 32, 33, 34, ici de longueur sensiblement égale à 0,9 mm. La grande et la petite diagonale D1 , D2 des mailles 30 sont mesurées au milieu des intersections des branches 31 , 32, 33, 34. The meshes 30 also comprise a large diagonal D1, corresponding to the large diagonal of the quadrilateral defined by the branches 31, 32, 33, 34, here of length substantially equal to 1 mm and a small diagonal D2, corresponding to the small diagonal of the quadrilateral defined by the branches 31, 32, 33, 34, here of length substantially equal to 0.9 mm. The large and the small diagonal D1, D2 of the meshes 30 are measured in the middle of the intersections of the branches 31, 32, 33, 34.
La figure 7 permet d'illustrer un aspect de l'invention selon lequel le premier plan moyen M dans lequel s'étend le volet 18, fait un angle a compris entre 0° et 35° avec le deuxième plan moyen N dans lequel s'étend la paroi plane 14 sur laquelle le volet 18 est situé. FIG. 7 illustrates an aspect of the invention according to which the first mean plane M in which the flap 18 extends, makes an angle α between 0 ° and 35 ° with the second average plane N in which s' extends the flat wall 14 on which the flap 18 is located.

Claims

Revendications claims
1 . Ailette (7) destinée à perturber l'écoulement d'un fluide, dit premier fluide, ladite ailette (7) étant constituée d'un feuillard métallique (10), caractérisé par le fait que ledit feuillard métallique (10) comprend au moins une partie de métal déployé présentant une surface comprenant des mailles (30), dite surface maillée (15), ladite ailette (7) comprenant au moins une persienne (16) comportant une fente (17) et un volet (18), réalisée dans la surface maillée (15) et destinée à former un déflecteur du flux du premier fluide. 1. A fin (7) for disrupting the flow of a fluid, said first fluid, said fin (7) consisting of a metal strip (10), characterized in that said metal strip (10) comprises at least one expanded metal part having a surface comprising meshes (30), said mesh surface (15), said fin (7) comprising at least one louver (16) having a slot (17) and a flap (18), made in the mesh surface (15) and intended to form a deflector of the flow of the first fluid.
2. Ailette (7) selon la revendication 1 , dans laquelle ledit feuillard métallique (10) comprend des ondulations (1 1 ). The fin (7) according to claim 1, wherein said metal strip (10) comprises corrugations (11).
3. Ailette (7) selon la revendication 2, dans laquelle les ondulations (1 1 ) comprennent des plis supérieurs (12) et inférieurs (13) et des parois planes (14) reliant entre eux les plis supérieurs (12) et inférieurs (13), l'ailette comprenant une direction latérale (I) définie par le sens d'extension des plis supérieurs (12) et inférieurs (13), une direction transversale (T) parallèle à une hauteur définie par la hauteur (H) des ondulations (1 1 ) et une direction longitudinale (L) perpendiculaire au plan défini par la direction latérale (I) et la direction transversale (T) de l'ailette (7). 3. A fin (7) according to claim 2, wherein the corrugations (1 1) comprise upper (12) and lower (13) folds and flat walls (14) interconnecting the upper (12) and lower (12) folds ( 13), the fin comprising a lateral direction (I) defined by the direction of extension of the upper (12) and lower (13) folds, a transverse direction (T) parallel to a height defined by the height (H) of the undulations (1 1) and a longitudinal direction (L) perpendicular to the plane defined by the lateral direction (I) and the transverse direction (T) of the fin (7).
4. Ailette (7) selon la revendication 3, dans laquelle la ou les persiennes (16) s'étendent longitudinalement selon une direction orthogonale à la direction latérale (I) de l'ailette (7). 4. A fin (7) according to claim 3, wherein the or louvers (16) extend longitudinally in a direction orthogonal to the lateral direction (I) of the fin (7).
5. Ailette (7) selon l'une quelconque des revendications 3 ou 4, dans laquelle ladite surface maillée (15) et la ou lesdites persiennes (16) se situent au niveau des parois planes (14). 5. A fin (7) according to any one of claims 3 or 4, wherein said mesh surface (15) and said louver (s) (16) are at the level of the flat walls (14).
6. Ailette (7) selon la revendication 5, dans laquelle les plis supérieurs (12) et inférieurs (13) sont destinés à être en contact avec des tubes (2) et/ou plaques d'échangeur de chaleur (1 ). The fin (7) according to claim 5, wherein the upper (12) and lower (13) folds are intended to be in contact with tubes (2) and / or heat exchanger plates (1).
7. Ailette (7) selon l'une quelconque des revendications 5 ou 6, dans laquelle lesdits plis supérieurs (12) et/ou inférieurs (13) sont pleins. The fin (7) according to any one of claims 5 or 6, wherein said upper (12) and / or lower (13) folds are full.
8. Ailette (7) selon l'une des revendications 3 à 7, dans laquelle l'ailette (7) comprend une pluralité de persiennes (16) disposées parallèlement entre elles sur au moins une des parois planes (14) de l'ailette (7). 8. A fin (7) according to one of claims 3 to 7, wherein the fin (7) comprises a plurality of louvers (16) arranged parallel to each other on at least one of the flat walls (14) of the fin (7).
9. Ailette (7) selon l'une quelconque des revendications 3 à 8, dans laquelle les mailles (30) du volet (18) s'étendent selon un premier plan moyen (M), ledit premier plan moyen faisant un angle a compris entre 0° et 35° avec un second plan moyen de la paroi plane (14) sur laquelle le volet (18) est situé. 9. A fin (7) according to any one of claims 3 to 8, wherein the meshes (30) of the flap (18) extend in a first middle plane (M), said first middle plane forming an angle included between 0 ° and 35 ° with a second middle plane of the plane wall (14) on which the flap (18) is located.
10. Ailette (7) selon l'une quelconque des revendications précédentes, dans laquelle les mailles (30) sont des quadrilatères et définies par quatre branches (31 , 32, 33, 34) définissant entre elles une ouverture (35). 10. A fin (7) according to any one of the preceding claims, wherein the meshes (30) are quadrilaterals and defined by four branches (31, 32, 33, 34) defining between them an opening (35).
1 1 . Ailette (7) selon la revendication 10, dans laquelle l'ouverture (35) comprend une petite diagonale (d2) de longueur comprise entre 0,1 mm et 5 mm. 1 1. A fin (7) according to claim 10, wherein the opening (35) comprises a small diagonal (d2) of length between 0.1 mm and 5 mm.
12. Ailette (7) selon la revendication 10, dans laquelle l'ouverture (35) comprend une grande diagonale (d1 ) comprise entre 0,1 mm et 10 mm. 12. Wing (7) according to claim 10, wherein the opening (35) comprises a large diagonal (d1) between 0.1 mm and 10 mm.
13. Ailette (7) selon l'une quelconque des revendications précédentes, dans laquelle les dimensions du volet (18) sont supérieures aux dimensions des mailles (30). 13. A fin (7) according to any one of the preceding claims, wherein the dimensions of the flap (18) are greater than the mesh size (30).
14. Ailette (7) selon l'une quelconque des revendications précédentes, dans laquelle le volet (18) présente une forme sensiblement rectangulaire, la dimension de ses petits cotés étant comprise entre 0,5 mm et 5 mm.  14. A fin (7) according to any one of the preceding claims, wherein the flap (18) has a substantially rectangular shape, the dimension of its small sides being between 0.5 mm and 5 mm.
15. Ailette (7) selon l'une quelconque des revendications précédentes, dans laquelle ledit feuillard métallique (10) a une épaisseur (e) comprise entre 0,05 mm et 0,5 mm. 15. A fin (7) according to any one of the preceding claims, wherein said metal strip (10) has a thickness (e) of between 0.05 mm and 0.5 mm.
16. Ailette (7) selon quelconque des revendications précédentes, dans laquelle les mailles (30) ont une largeur (11 ) comprise entre 0,05 et 5 mm. 16. A fin (7) according to any one of the preceding claims, wherein the meshes (30) have a width (11) of between 0.05 and 5 mm.
17. Echangeur de chaleur (1 ) comprenant au moins une ailette (7) selon l'une quelconque des revendications précédentes. 17. Heat exchanger (1) comprising at least one fin (7) according to any one of the preceding claims.
18. Procédé de fabrication d'une ailette (7) destinée à perturber l'écoulement d'un fluide et constituée d'un feuillard métallique (10) comprenant un métal déployé présentant une surface comprenant des mailles (30), dite surface maillée (15) procédé dans lequel : 18. A method of manufacturing a fin (7) for disrupting the flow of a fluid and consisting of a metal strip (10) comprising a expanded metal having a surface comprising meshes (30), said mesh surface ( 15) wherein:
- on fend la surface maillée (15) de manière à créer une persienne (16) comprenant une fente (17) et un volet (18) et destinée à former un déflecteur du flux du premier fluide.  - The mesh surface (15) is split so as to create a louver (16) comprising a slot (17) and a flap (18) and intended to form a deflector of the flow of the first fluid.
PCT/EP2013/065171 2012-07-24 2013-07-18 Fin intended to disturb the flow of a fluid, heat exchanger comprising such a fin and method of manufacturing such a fin WO2014016196A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
ES13739678.4T ES2617207T3 (en) 2012-07-24 2013-07-18 Flap intended to alter the flow of a fluid, heat exchanger comprising said flap and method of manufacturing said flap
EP13739678.4A EP2877800B1 (en) 2012-07-24 2013-07-18 Fin intended to disturb the flow of a fluid, heat exchanger comprising such a fin and method of manufacturing such a fin

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1257155 2012-07-24
FR1257155A FR2993967B1 (en) 2012-07-24 2012-07-24 FIN FOR DISCRIDGING THE FLOW OF A FLUID, HEAT EXCHANGER COMPRISING SUCH FIN AND METHOD OF MANUFACTURING SUCH AILT

Publications (1)

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WO2014016196A1 true WO2014016196A1 (en) 2014-01-30

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EP (1) EP2877800B1 (en)
ES (1) ES2617207T3 (en)
FR (1) FR2993967B1 (en)
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WO (1) WO2014016196A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3038975A1 (en) * 2015-07-17 2017-01-20 Valeo Systemes Thermiques HEAT EXCHANGER WITH IMPROVED FINS

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102016224338A1 (en) * 2016-12-07 2018-06-07 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Heat exchanger and method for its use

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4596129A (en) * 1982-11-01 1986-06-24 Mitsubishi Jukogyo Kabushiki Kaisha Apparatus for forming fins for heat exchangers
JPS62186193A (en) * 1986-02-13 1987-08-14 Nippon Radiator Co Ltd Fin for heat exchanger and manufacture thereof

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4596129A (en) * 1982-11-01 1986-06-24 Mitsubishi Jukogyo Kabushiki Kaisha Apparatus for forming fins for heat exchangers
JPS62186193A (en) * 1986-02-13 1987-08-14 Nippon Radiator Co Ltd Fin for heat exchanger and manufacture thereof

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3038975A1 (en) * 2015-07-17 2017-01-20 Valeo Systemes Thermiques HEAT EXCHANGER WITH IMPROVED FINS
WO2017012870A1 (en) * 2015-07-17 2017-01-26 Valeo Systemes Thermiques Heat exchanger with improved fins
CN108369080A (en) * 2015-07-17 2018-08-03 法雷奥热系统公司 Heat exchanger with improved fin

Also Published As

Publication number Publication date
ES2617207T3 (en) 2017-06-15
EP2877800B1 (en) 2016-11-30
EP2877800A1 (en) 2015-06-03
PL2877800T3 (en) 2017-07-31
FR2993967B1 (en) 2014-08-29
FR2993967A1 (en) 2014-01-31

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