EP3385655B1 - Heat exchanger with u-shaped flow - Google Patents

Heat exchanger with u-shaped flow Download PDF

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Publication number
EP3385655B1
EP3385655B1 EP18165325.4A EP18165325A EP3385655B1 EP 3385655 B1 EP3385655 B1 EP 3385655B1 EP 18165325 A EP18165325 A EP 18165325A EP 3385655 B1 EP3385655 B1 EP 3385655B1
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EP
European Patent Office
Prior art keywords
tubes
plate
sealing strap
heat exchanger
tube
Prior art date
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Application number
EP18165325.4A
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German (de)
French (fr)
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EP3385655A1 (en
Inventor
Nicolas Cormet
Stéphane POTTEAU
Jean-Jacques Garcia
Olivier MAQUIN
Hicham KHLIL
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Valeo Systemes Thermiques SAS
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Valeo Systemes Thermiques SAS
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Publication of EP3385655A1 publication Critical patent/EP3385655A1/en
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Publication of EP3385655B1 publication Critical patent/EP3385655B1/en
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/02—Header boxes; End plates
    • F28F9/0202—Header boxes having their inner space divided by partitions
    • F28F9/0204—Header boxes having their inner space divided by partitions for elongated header box, e.g. with transversal and longitudinal partitions
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/02—Header boxes; End plates
    • F28F9/0219—Arrangements for sealing end plates into casing or header box; Header box sub-elements
    • F28F9/0224—Header boxes formed by sealing end plates into covers
    • F28F9/0226—Header boxes formed by sealing end plates into covers with resilient gaskets
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
    • F28D2021/0019—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for
    • F28D2021/008—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for for vehicles
    • F28D2021/0082—Charged air coolers

Definitions

  • the invention relates in particular to a U-shaped circulation heat exchanger, in particular a charge air cooler.
  • the charge air intended for the engine is cooled by a heat exchanger commonly called a charge air cooler (RAS).
  • RAS charge air cooler
  • the charge air inlet and outlet of the exchanger can be placed on the same side of the exchanger.
  • the charge air flow therefore circulates in a U-shaped circuit.
  • the heat exchanger comprises a row of tubes, a first part of the tubes of the row of tubes delimiting a first fluid circulation channel, a second part of the tubes of the row of tubes delimiting a second channel fluid circulation.
  • the heat exchanger comprises a collector plate pierced with openings for receiving the tubes, a cover for closing the collector plate and thus forming a collector box, as well as a plane seal disposed on the collector plate to ensure sealing with the lid.
  • the collector box is then divided by a partition wall to delimit two chambers which communicate respectively with the first channel and the second channel, the circulation of the fluid in the channels taking place against the current.
  • Such an exchanger of the prior art is subjected to thermal cycling which creates failures such as cracks resulting in fluid leaks, particularly near the partition wall of the collector box. Indeed, on either side of the partition wall of the collector box, a tube of the first fluid circulation channel is crossed by a hot fluid and a tube of the second fluid circulation channel is crossed by a cold fluid, which generates differences in thermal expansion of materials and causes cracks.
  • the heat exchanger comprises two rows of tubes, a first row delimiting a first fluid circulation channel, a second row delimiting a second fluid circulation channel, a collector plate pierced with reception openings tubes, a cover for closing the collector plate and thus forming a collector box, as well as a plane seal placed on the collector plate to ensure sealing with the cover.
  • the collector box is then divided by a partition to delimit two chambers which communicate respectively with the first channel and the second channel of each tube, the circulation of the fluid in the tube channels taking place against the current.
  • the heat exchanger comprises a row of tubes, having two circulation channels delimited by a partition wall, each tube having a cutout at the level of the partition wall, a collector box divided into two chambers by a partition wall and a seal. The seal is inserted into the tube cutout and is in contact with the partition wall of the collector box to guarantee sealing between the two chambers.
  • Such an exchanger has the disadvantage of comprising non-standard tubes since they include a specific cut, which complicates its manufacture and increases its cost.
  • the invention proposes an exchanger with a so-called U-shaped methodical circulation architecture.
  • the tubes do not include a cutout at the separation wall.
  • the sealing strap extends over the bottom of the plate of the collector plate.
  • the sealing strap is in contact with the plate bottom of the collector plate.
  • the seal comprises a frame.
  • the frame is substantially rectangular
  • the sealing strap comprises a plate for receiving the partition wall.
  • the sealing strap comprises means for maintaining said partition wall on said receiving plate.
  • the means for maintaining said separation partition comprise two raised edges located on either side of the receiving tray.
  • the two raised edges are symmetrical in shape with respect to a plane passing along the sealing strap in the center of the receiving plate.
  • the two raised edges have a cross section in the shape of a right triangle.
  • the seal comprises at least one side tab extending from the sealing strap.
  • the side tongue extends between the sealing strap and the frame.
  • the side tab extends perpendicular to the sealing strap.
  • the seal comprises at least one pair of side tabs, each of the side tabs extending perpendicularly on either side of the sealing strap.
  • the side tabs of the at least one pair of side tabs are aligned with one another.
  • side tabs are arranged staggered along the sealing strap, alternately on one side and on the other of said sealing strap.
  • the collector plate comprises a peripheral groove.
  • the frame of the seal is located in the peripheral groove of the collector plate.
  • the side tab(s) are arranged on the plate bottom of the collector plate.
  • the openings in the bottom of the plate of the collector plate comprise collars projecting from the bottom of the plate on the opposite side of the collector box.
  • the openings in the bottom of the plate of the collector plate comprise collars projecting from the bottom of the plate on the opposite side of the collector box.
  • the end mouths of the tubes are substantially coplanar with the bottom of the plate.
  • the exchanger is designed so that the end openings of the tubes are coplanar with the bottom of the plate.
  • the manufacturing tolerances of the tubes and the collector plate as well as the assembly tolerances can, for example, cause the tubes to sink to a height of 0.7 millimeters relative to the bottom of the plate or exceed 0.8 millimeters. relative to the bottom of the plate.
  • the penetration and protrusion are distances which are measured locally between the plane containing the end mouth of a tube and the bottom of the plate which is adjacent to it.
  • the surface of the side tabs in contact with the bottom of the collector plate is flat.
  • the surface of the sealing strap in contact with the plate bottom of the collector plate and the tubes is flat.
  • the tubes project from the bottom of the plate into the collector box.
  • the surface of the sealing strap in contact with the plate bottom of the collector plate and the tubes is of a complementary shape to the surface formed by the plate bottom of the collector plate and the tubes on which said sealing strap is arranged.
  • the sealing strap is in compression against the separation wall and against the separation wall of each tube.
  • the sealing strap is in compression against the plate bottom of the collector plate.
  • the collector box comprises a peripheral box foot.
  • the frame of the seal is in compression against the peripheral groove of the collector plate and the box foot of the collector box.
  • the compression ratio of the sealing strap is between 1% and 75%.
  • the sealing strap is compressed by a compression distance of between 0 millimeters and 3 millimeters.
  • the compression ratio of the seal frame is between 17% and 53%.
  • the thickness of the sealing strap at level of the receiving tray is at least 3 millimeters, preferably at least 3.9 millimeters.
  • the height of the two raised edges relative to the receiving plate (15) is between 0.5 and 3 millimeters, in particular between 2 and 3 millimeters.
  • the main extension plane of the seal frame is located in a plane parallel to and distinct from the main extension plane of the sealing strap.
  • the main extension plane of the seal frame is located in a plane parallel to and distinct from the main extension plane of the side tab(s).
  • each tube comprises a corrugated insert, said dividing wall comprising at least one of the corrugations of the insert.
  • FIG. 1 represents a heat exchanger 1 comprising a bundle of a row of tubes 2 for circulating fluid, in particular charge air.
  • the tubes 2 are stacked in a stacking direction d.
  • the tubes 2 open into two collector boxes 26 and 27 and are held by two collector plates 3 and 9 respectively secured to the collector boxes 26 and 27.
  • FIG. 2 illustrates heat exchanger 1 without collector boxes 26 and 27.
  • the mechanical strength of the bundle is reinforced by cheeks 4 arranged on either side of the bundle of tubes 2, in the stacking direction d.
  • a seal 10 comprising a sealing strap 13 extending in the stacking direction d on one end of the bundle of tubes 2, in particular on end mouths 8 of the tubes 2.
  • Each tube 2 has at its end an opening whose contour 8a defines an end mouth 8.
  • Tube 2 has a preferably flat end.
  • the line drawing the contour of the end mouth 8 is closed and fits into a plane.
  • the tube 2 does not include a cutout at its end to insert a seal, in particular a sealing strap.
  • the end mouth 8 therefore does not include a cutout: the line drawing the outline of the end mouth 8 is closed.
  • Each tube 2 includes an end mouth 8.
  • Each end mouth 8 is included in a main end extension plane P.
  • the end mouths 8 are of substantially rectangular shape. They can be oval, ovoid, round, square...
  • the main end extension planes P of the end mouths 8 of the tubes 2 are coplanar with each other.
  • the main end extension planes P of the end mouths 8 are distinct parallel planes.
  • each tube 2 comprising an inlet channel 2a for fluid circulation and an outlet channel 2b for fluid circulation separated by a separation wall 2c.
  • the fluid is charge air.
  • Each tube 2 includes a corrugated insert 19.
  • the presence of undulations makes it possible to increase the surface of the insert 19 and therefore the exchange surface between the tube 2 and the charge air.
  • the separation wall 2c is a U-shaped hollow wall.
  • the sealing strap 13 is shown in transparency on the Figure 4 .
  • the sealing strap 13 extends in the stacking direction d of the tubes 2 on the mouths 8 of the tubes 2, above the separation wall 2c of each tube 2.
  • the dividing wall 2c of a tube may also be made of material with the tube 2.
  • the dividing wall 2c may result from a fold when the tube 2 is a folded tube.
  • the separation wall 2c can also be the central wall of a stamped tube.
  • the seal 10 comprises a substantially rectangular frame 11 capable of being inserted into the peripheral groove of a collector plate.
  • the seal 10 comprises a sealing strap 13 extending between two opposite edges of the frame 11.
  • the seal 10 comprises three pairs of two side tabs 12. Each side tab 12 of each pair of side tab 12 extending perpendicularly and on either side of said sealing strap 13.
  • the number of side tabs 12 may vary depending on the geometry and size of the frame 11.
  • each side tongue 12 of a pair of side tongues extending on either side other of the sealing strap 13.
  • the side tabs 12 have for example a thickness of 1.8mm.
  • a side tab 12 may be sufficient to hold the sealing strap 13 in a predefined position.
  • the seal may include a single pair of side tabs, each of the side tabs extending perpendicularly on either side of the sealing strap.
  • the side tabs 12 of the pair or pairs of side tabs 12 are arranged along the same line perpendicular to the sealing strap 13.
  • the side tabs 12 can be arranged staggered along the sealing strap, alternately on one side and the other of said sealing strap.
  • the side tabs 12 are regularly distributed along the sealing strap 13.
  • the sealing strap 13 comprises a receiving plate 15 of a partition wall 21 of the collector box 3 (illustrated Figure 7 ) and means for holding the partition wall 21 on said receiving tray 15.
  • the length of the receiving plate 15 is at least equal to the height overall of the tube bundle 2 measured in the stacking direction.
  • the means for holding said partition wall 21 on said receiving plate 15 comprise two raised edges 14 located on either side of the receiving plate 15.
  • FIG 6a represents a sectional view of the seal 10 of the figure 5a along the Via-Via line according to a plane passing along two lateral tongues 12 and perpendicular to the sealing strap 13.
  • the main extension plane of the frame 11 of the seal 10 is located in a plane parallel to and distinct from the main extension plane of the sealing strap 13.
  • the main extension plane of the frame 11 of the seal 10 is located in a plane parallel to and distinct from the main extension plane of the side tabs 12.
  • the raised edges 14 are symmetrical in shape with respect to a plane perpendicular to the side tongues 12 and passing through the center of the receiving plate 15.
  • the two raised edges 14 have a sufficient height to maintain a dividing wall 21 on the receiving plate 15.
  • the height of the two raised edges 14 measured from and perpendicular to the receiving plate 15 at their highest point is included between 0.5 and 3 millimeters, in particular between 2 and 3 mm.
  • the two raised edges 14 have a cross section in the shape of a right triangle.
  • the sealing strap 13 has a cross section in the form of a hollow receptacle whose interior side walls are flared from the receiving plate 15 which is the bottom of the receptacle and whose exterior side walls are at right angles to the plane of the plate reception 15.
  • the side tabs 12 comprise a surface 12a intended to be brought into contact with a collector plate.
  • each side tongue 12 is flat.
  • the surfaces 12a of the side tongues 12 are coplanar with each other.
  • the surfaces 12a are not flat. Indeed, the function of the side tabs 12a is to maintain the sealing strap 13 at a predefined distance from the frame 11 and not a sealing function with respect to the collector plate on which the seal 10 is posed.
  • figure 6b represents a sectional view of the seal 10 of the figure 5b along the line Vlb-Vlb according to a plane passing along the sealing strap 13 in the center of the receiving plate 15 and perpendicular to the side tabs 12.
  • the seal 10 is of constant thickness at the level of the receiving plate 15.
  • the sealing strap 13 comprises a surface 13a intended to be brought into contact with a collector plate.
  • the surface 13a of the sealing strap 13 is flat.
  • the surface 13a of the sealing strap 13 may be non-planar.
  • figure 6c represents a sectional view of the seal 10 of the figure 5c along the line Vlc-Vlc according to a plane passing along a raised edge 14 of the sealing strap 13 and perpendicular to the side tabs 12.
  • the length of the raised edges 14 is less than the length of the receiving plate 15.
  • the raised edge is continuous.
  • the length of the raised edges 14 may be equal to that of the receiving plate 15.
  • the raised edges may be discontinuous and include only sections regularly distributed along the receiving plate 15.
  • the raised edges 14 are identical but can be of different height or shape.
  • the raised edges 14 are made of material with the receiving tray. They can also be made of a material different or identical to that of the receiving plate 15 and for example glued to said receiving plate 15.
  • the collector box 26 is secured to the collector plate 3.
  • the foot 22 of the collector box 26 is crimped to the collector plate 3 by crimping tabs.
  • the collector box 26 comprises a partition wall 21 delimiting an inlet chamber 25 in the inlet channels 2a of the tubes 2 and an outlet chamber 20 for the outlet channels 2b of the tubes 2.
  • the separation wall 21 is placed on the sealing strap 13, in particular on the receiving plate 15.
  • the partition wall 21 is held by the raised edges 14 of the sealing strap 13.
  • the raised edges 14 of the sealing strap 13 are symmetrical with respect to the partition wall 21.
  • the frame 11 of the seal 10 is located in a peripheral groove 5 of the collector plate 3.
  • the frame 11 of the seal 10 is compressed between the box foot 22 of the collector box 26 and the bottom of the peripheral groove 5 of the collector plate 3.
  • the sealing strap 13 is in contact and preferably compressed against the partition wall 21 and against the collector plate 3 and the tubes 2, as illustrated figure 8 .
  • the collector plate 3 comprises a plate bottom 6 pierced with openings 7 for receiving the bundle of tubes 2.
  • the openings 7 have inverted collars 9, that is to say making projection of the bottom of the plate 6 on the opposite side of the collector box 26.
  • the collars 9 project from the bottom of the plate 6 on the side opposite the peripheral groove 5.
  • the collars 9 extend from the bottom of the plate 6 around the tubes 2, the ends of which they enclose.
  • the tubes 2 are brazed to the collars 9.
  • the collars can be oriented in the opposite direction.
  • the side tabs 12 extend over the bottom of the plate 6 of the collector plate 3.
  • the end mouths 8 of the tubes 2 are substantially coplanar with each other and with the bottom of the plate 6.
  • the surface 13a of the sealing strap 13 in contact with the collector plate 3 and in particular with the bottom of the plate 6 and in contact with the end mouths 8 of the tubes is flat.
  • the surface 13a of the sealing strap 13 is included in the main end extension planes P of the end mouths 8 of the tubes 2.
  • the main end extension planes P of the end mouths 8 of the tubes 2 are in the same plane as the bottom of the plate 6.
  • the elasticity of the sealing strap 13 associated with its compression against the end mouths 8 and the bottom of the plate 6 makes it possible to fill in the coplanarity defects between the end mouths 8 of the tubes 2 and the bottom of the plate 6 to guarantee a good seal with the separation wall 21 of the collector box 26.
  • the manufacturing tolerances of the tubes 2 and the collector plate 3 as well as the assembly tolerances can cause the tubes 2 to sink by a height dh relative to the bottom of the plate or to exceed dh relative to the bottom of the plate. plate.
  • the depression and overrun are distances which are measured locally between the plane containing the end mouth of a tube and the bottom of the plate which is adjacent to it.
  • the excess corresponds to a positive height dh
  • the depression corresponds to a negative height dh.
  • a sealing strap 13 with a flat surface 13a is no longer suitable.
  • the openings 7 of the bottom of the plate 6 of the collector plate comprise collars projecting from the bottom of the plate 6 on the side of the collector box to which the collector plate is secured.
  • the tubes 2 being held by the collars 9, they project from the bottom of the plate 6 by several millimeters, into the collector box.
  • the surface 13a of the sealing strap 13 in contact with the plate bottom 6 of the collector plate 3 and the end mouths 8 of the tubes 2 is of complementary shape to the surface formed by the plate base 6 of the collector plate 3 and the end mouths 8 of the tubes 2 on which said sealing strap 13 is arranged.
  • the surface 13a of the sealing strap 13 is corrugated, the depth of the undulations adapting to the profile of the hollows and waves generated by the surface of the plate bottom 6, the collars 9, and the end mouths 8 of the tubes 2.
  • the surface 13a of the sealing strap 13 is either flat or corrugated.
  • the seal 10 comprises a sealing strap 13 whose thickness measured at the receiving plate 15 is 4 millimeters.
  • the maximum compression distance of the sealing strap 13 at the level of the sealing plate 15 is 3.06 millimeters.
  • the minimum compression distance is 0.03 millimeters.
  • the maximum compression distance of the sealing strap 13 at the level of the sealing plate 15 being 3.06 millimeters, the compression margin is therefore 0.94 millimeters.
  • a sealing strap 13 with a flat surface 13a may be suitable.
  • the minimum compression distance of the sealing strap 13 at the level of the sealing plate 15 is 0.03 millimeter when the maximum depression dh is 0.66mm.
  • the surface 13a of the sealing strap 13 is preferably corrugated.

Description

L'invention a notamment pour objet un échangeur de chaleur à circulation en U, en particulier un refroidisseur d'air de suralimentation.The invention relates in particular to a U-shaped circulation heat exchanger, in particular a charge air cooler.

Dans le domaine des véhicules automobiles, l'air de suralimentation à destination du moteur est refroidi par un échangeur de chaleur communément nommé refroidisseur d'air de suralimentation (RAS). Certains de ces refroidisseurs, ci-après nommés RAS à air, sont refroidis par de l'air.In the field of motor vehicles, the charge air intended for the engine is cooled by a heat exchanger commonly called a charge air cooler (RAS). Some of these coolers, hereinafter called air RAS, are cooled by air.

Selon l'architecture du véhicule et la place disponible sous le capot pour intégrer le RAS à air, l'entrée et la sortie d'air de suralimentation de l'échangeur peuvent être disposées du même côté de l'échangeur. Le flux d'air de suralimentation circule donc selon un circuit en forme de U.Depending on the architecture of the vehicle and the space available under the hood to integrate the air RAS, the charge air inlet and outlet of the exchanger can be placed on the same side of the exchanger. The charge air flow therefore circulates in a U-shaped circuit.

Trois architectures d'échangeurs à circulation de fluide en U sont connues de l'art antérieur.Three architectures of U-shaped fluid circulation exchangers are known from the prior art.

Selon une première architecture connue, l'échangeur de chaleur comprend une rangée de tubes, une première partie des tubes de la rangée de tubes délimitant un premier canal de circulation de fluide, une deuxième partie des tubes de la rangée de tubes délimitant un deuxième canal de circulation de fluide. L'échangeur de chaleur comprend une plaque collectrice percée d'ouvertures de réception des tubes, un couvercle pour fermer la plaque collectrice et former ainsi une boîte collectrice, ainsi qu'un joint d'étanchéité plan disposé sur la plaque collectrice pour assurer une étanchéité avec le couvercle. La boîte collectrice est alors divisée par une cloison de séparation pour délimiter deux chambres qui communiquent respectivement avec le premier canal et le deuxième canal, la circulation du fluide dans les canaux se faisant à contre-courant. Un tel échangeur de l'art antérieur est soumis à des cyclages thermiques qui créent des défaillances telles que des fissures ayant pour conséquence des fuites de fluide notamment à proximité de la cloison de séparation de la boîte collectrice. En effet, de part et d'autre de la cloison de séparation de la boîte collectrice, un tube du premier canal de circulation de fluide est traversé par un fluide chaud et un tube du deuxième canal de circulation de fluide est traversé par un fluide froid, ce qui génère des différences de dilatation thermique des matériaux et engendre des fissures.According to a first known architecture, the heat exchanger comprises a row of tubes, a first part of the tubes of the row of tubes delimiting a first fluid circulation channel, a second part of the tubes of the row of tubes delimiting a second channel fluid circulation. The heat exchanger comprises a collector plate pierced with openings for receiving the tubes, a cover for closing the collector plate and thus forming a collector box, as well as a plane seal disposed on the collector plate to ensure sealing with the lid. The collector box is then divided by a partition wall to delimit two chambers which communicate respectively with the first channel and the second channel, the circulation of the fluid in the channels taking place against the current. Such an exchanger of the prior art is subjected to thermal cycling which creates failures such as cracks resulting in fluid leaks, particularly near the partition wall of the collector box. Indeed, on either side of the partition wall of the collector box, a tube of the first fluid circulation channel is crossed by a hot fluid and a tube of the second fluid circulation channel is crossed by a cold fluid, which generates differences in thermal expansion of materials and causes cracks.

Selon une deuxième architecture connue, l'échangeur de chaleur comprend deux rangées de tubes, une première rangée délimitant un premier canal de circulation de fluide, une deuxième rangée délimitant un deuxième canal de circulation de fluide, une plaque collectrice percée d'ouvertures de réception des tubes, un couvercle pour fermer la plaque collectrice et former ainsi une boîte collectrice, ainsi qu'un joint d'étanchéité plan disposé sur la plaque collectrice pour assurer une étanchéité avec le couvercle. La boîte collectrice est alors divisée par une cloison pour délimiter deux chambres qui communiquent respectivement avec le premier canal et le deuxième canal de chaque tube, la circulation du fluide dans les canaux de tube se faisant à contre-courant. Un tel échangeur présente l'inconvénient de présenter deux rangées de tubes, ce qui complexifie sa fabrication, augmente son coût et à encombrement équivalent, diminue la surface d'échange de l'échangeur et donc sa performance.According to a second known architecture, the heat exchanger comprises two rows of tubes, a first row delimiting a first fluid circulation channel, a second row delimiting a second fluid circulation channel, a collector plate pierced with reception openings tubes, a cover for closing the collector plate and thus forming a collector box, as well as a plane seal placed on the collector plate to ensure sealing with the cover. The collector box is then divided by a partition to delimit two chambers which communicate respectively with the first channel and the second channel of each tube, the circulation of the fluid in the tube channels taking place against the current. Such an exchanger has the disadvantage of having two rows of tubes, which complicates its manufacture, increases its cost and, for equivalent dimensions, reduces the exchange surface of the exchanger and therefore its performance.

Selon une troisième architecture connue et décrite dans le document FR2864610 B1 , l'échangeur de chaleur comprend une rangée de tubes, présentant deux canaux de circulation délimités par une cloison de séparation, chaque tube présentant une découpe au niveau de la cloison de séparation, une boîte collectrice divisée en deux chambres par une paroi de séparation et un joint d'étanchéité. Le joint d'étanchéité est inséré dans la découpe des tubes et est en contact la cloison de séparation de la boîte collectrice pour garantir l'étanchéité entre les deux chambres. Un tel échangeur présente l'inconvénient de comprendre des tubes non standards puisque comportant une découpe spécifique, ce qui complexifie sa fabrication et augmente son coût.Afin de résoudre ces inconvénients, l'invention propose un échangeur à architecture dite à circulation méthodique en U au sein d'une même rangée de tubes présentant l'avantage de comprendre un faisceau de tubes standard à une rangée, et qui rempli les cahiers des charges des clients les plus exigeants en matière de tenue aux cyclages thermiques. Le document EP 2 317 271 A1 présente un échangeur de chaleur selon le préambule de la revendication 1.According to a third architecture known and described in the document FR2864610 B1 , the heat exchanger comprises a row of tubes, having two circulation channels delimited by a partition wall, each tube having a cutout at the level of the partition wall, a collector box divided into two chambers by a partition wall and a seal. The seal is inserted into the tube cutout and is in contact with the partition wall of the collector box to guarantee sealing between the two chambers. Such an exchanger has the disadvantage of comprising non-standard tubes since they include a specific cut, which complicates its manufacture and increases its cost. In order to resolve these disadvantages, the invention proposes an exchanger with a so-called U-shaped methodical circulation architecture. within the same row of tubes with the advantage of comprising a bundle of standard single-row tubes, and which meets the specifications of the most demanding customers in terms of resistance to thermal cycling. The document EP 2 317 271 A1 presents a heat exchanger according to the preamble of claim 1.

Les exemples suivant concernent un échangeur de chaleur de type refroidisseur de suralimentation. Cependant, cette invention s'applique à tout type d'échangeur comprenant un faisceau de tubes, par exemple, un radiateur, un évaporateur, un refroidisseur d'air de recirculation.The following examples concern a supercharger type heat exchanger. However, this invention applies to any type of exchanger comprising a bundle of tubes, for example, a radiator, an evaporator, a recirculation air cooler.

L'invention se rapporte notamment à un échangeur de chaleur pour véhicule automobile comprenant :

  • un faisceau de tubes empilés selon une direction d'empilement, chaque tube comprenant au moins un canal d'entrée de circulation de fluide et un canal de sortie de circulation de fluide séparés par une paroi de séparation et chaque tube comprenant une bouche d'extrémité,
  • une plaque collectrice comprenant un fond de plaque percé d'ouvertures de réception du faisceau de tubes,
  • une boîte collectrice assujettie à la plaque collectrice et comportant une cloison de séparation délimitant une chambre d'entrée dans les canaux d'entrée des tubes et une chambre de sortie pour les canaux de sortie des tubes,
  • un joint d'étanchéité disposé sur la plaque collectrice et comportant une bretelle d'étanchéité pour assurer l'étanchéité avec la cloison de séparation, ladite bretelle d'étanchéité s'étendant dans la direction d'empilement des tubes sur les bouches d'extrémité des tubes, au dessus de la paroi de séparation de chaque tube, les bouches d'extrémité ne comprenant pas de découpe dans la zone de contact avec la bretelle d'étanchéité.
The invention relates in particular to a heat exchanger for a motor vehicle comprising:
  • a bundle of tubes stacked in a stacking direction, each tube comprising at least one fluid circulation inlet channel and one fluid circulation outlet channel separated by a separation wall and each tube comprising an end mouth ,
  • a collector plate comprising a plate bottom pierced with openings for receiving the bundle of tubes,
  • a collector box secured to the collector plate and comprising a partition wall delimiting an inlet chamber in the inlet channels of the tubes and an outlet chamber for the outlet channels of the tubes,
  • a seal disposed on the collector plate and comprising a sealing strap to ensure sealing with the partition wall, said sealing strap extending in the direction of stacking of the tubes on the end openings tubes, above the separation wall of each tube, the end mouths not including a cutout in the contact zone with the sealing strap.

Selon un aspect de l'invention, les tubes ne comprennent pas de découpe au niveau de la paroi de séparation.According to one aspect of the invention, the tubes do not include a cutout at the separation wall.

Selon un aspect de l'invention, la bretelle d'étanchéité s'étend sur le fond de plaque de la plaque collectrice.According to one aspect of the invention, the sealing strap extends over the bottom of the plate of the collector plate.

Selon un aspect de l'invention, la bretelle d'étanchéité est en contact avec le fond de plaque de la plaque collectrice.According to one aspect of the invention, the sealing strap is in contact with the plate bottom of the collector plate.

Selon l'invention, le joint d'étanchéité comprend un cadre.According to the invention, the seal comprises a frame.

Selon un aspect de l'invention, le cadre est sensiblement rectangulaireAccording to one aspect of the invention, the frame is substantially rectangular

Selon l'invention, la bretelle d'étanchéité comprend un plateau de réception de la cloison de séparation.According to the invention, the sealing strap comprises a plate for receiving the partition wall.

Selon l'invention, la bretelle d'étanchéité comprend des moyens de maintien de ladite cloison de séparation sur ledit plateau de réception.According to the invention, the sealing strap comprises means for maintaining said partition wall on said receiving plate.

Selon un aspect de l'invention, les moyens de maintien de ladite cloison de séparation comprennent deux bords relevés situés de part et d'autre du plateau de réception.According to one aspect of the invention, the means for maintaining said separation partition comprise two raised edges located on either side of the receiving tray.

Selon un aspect de l'invention, les deux bords relevés sont de forme symétrique par rapport à un plan passant le long de la bretelle d'étanchéité au centre du plateau de réception.According to one aspect of the invention, the two raised edges are symmetrical in shape with respect to a plane passing along the sealing strap in the center of the receiving plate.

Selon un aspect de l'invention, les deux bords relevés ont une section transversale de la forme d'un triangle rectangle.According to one aspect of the invention, the two raised edges have a cross section in the shape of a right triangle.

Selon l'invention, le joint d'étanchéité comprend au moins une languette latérale s'étendant depuis la bretelle d'étanchéité.According to the invention, the seal comprises at least one side tab extending from the sealing strap.

Selon un aspect de l'invention, la languette latérale s'étend entre bretelle d'étanchéité et le cadre.According to one aspect of the invention, the side tongue extends between the sealing strap and the frame.

Selon l'invention, la languette latérale s'étend perpendiculairement par rapport à la bretelle d'étanchéité.According to the invention, the side tab extends perpendicular to the sealing strap.

Selon un aspect de l'invention, le joint d'étanchéité comprend au moins une paire de languettes latérales, chacune des languettes latérales s'étendant perpendiculairement de part et d'autre de la bretelle d'étanchéité.According to one aspect of the invention, the seal comprises at least one pair of side tabs, each of the side tabs extending perpendicularly on either side of the sealing strap.

Selon un aspect de l'invention, les languettes latérales de la au moins une paire de languettes latérales sont alignées l'une avec l'autre.According to one aspect of the invention, the side tabs of the at least one pair of side tabs are aligned with one another.

Selon un aspect de l'invention, des languettes latérales sont disposées en quinconce le long de la bretelle d'étanchéité, alternativement d'un côté et de l'autre de ladite bretelle d'étanchéité.According to one aspect of the invention, side tabs are arranged staggered along the sealing strap, alternately on one side and on the other of said sealing strap.

Selon l'invention, la plaque collectrice comprend une gorge périphérique.According to the invention, the collector plate comprises a peripheral groove.

Selon l'invention, le cadre du joint d'étanchéité est localisé dans la gorge périphérique de la plaque collectrice.According to the invention, the frame of the seal is located in the peripheral groove of the collector plate.

Selon un aspect de l'invention, la ou les languettes latérales sont disposées sur le fond de plaque de la plaque collectrice.According to one aspect of the invention, the side tab(s) are arranged on the plate bottom of the collector plate.

Selon un aspect de l'invention, les ouvertures du fond de plaque de la plaque collectrice comprennent des collets faisant saillie du fond de plaque du côté opposé de la boîte collectrice.According to one aspect of the invention, the openings in the bottom of the plate of the collector plate comprise collars projecting from the bottom of the plate on the opposite side of the collector box.

Selon un aspect de l'invention, les ouvertures du fond de plaque de la plaque collectrice comprennent des collets faisant saillie du fond de plaque du côté opposé de la boîte collectrice.According to one aspect of the invention, the openings in the bottom of the plate of the collector plate comprise collars projecting from the bottom of the plate on the opposite side of the collector box.

Selon un aspect de l'invention, les bouches d'extrémité des tubes sont sensiblement coplanaires avec le fond de plaque.According to one aspect of the invention, the end mouths of the tubes are substantially coplanar with the bottom of the plate.

Autrement dit, l'échangeur est conçu de manière à ce que les bouches d'extrémité des tubes soient coplanaires avec le fond de plaque. Cependant les tolérances de fabrication des tubes et de la plaque collectrice ainsi que les tolérances d'assemblage peuvent par exemple engendrer un enfoncement des tubes d'une hauteur de 0,7 millimètres par rapport au fond de plaque ou un dépassement de 0,8 millimètres par rapport au fond de plaque. L'enfoncement et le dépassement sont des distances qui sont mesurées localement entre le plan contenant la bouche d'extrémité d'un tube et le fond de plaque qui lui est adjacent.In other words, the exchanger is designed so that the end openings of the tubes are coplanar with the bottom of the plate. However, the manufacturing tolerances of the tubes and the collector plate as well as the assembly tolerances can, for example, cause the tubes to sink to a height of 0.7 millimeters relative to the bottom of the plate or exceed 0.8 millimeters. relative to the bottom of the plate. The penetration and protrusion are distances which are measured locally between the plane containing the end mouth of a tube and the bottom of the plate which is adjacent to it.

Selon un aspect de l'invention, la surface des languettes latérales en contact avec le fond de plaque collectrice est plane.According to one aspect of the invention, the surface of the side tabs in contact with the bottom of the collector plate is flat.

Selon un aspect de l'invention, la surface de la bretelle d'étanchéité en contact avec le fond de plaque de la plaque collectrice et les tubes est plane.According to one aspect of the invention, the surface of the sealing strap in contact with the plate bottom of the collector plate and the tubes is flat.

Selon un aspect de l'invention, les tubes font saillie du fond de plaque dans la boîte collectrice.According to one aspect of the invention, the tubes project from the bottom of the plate into the collector box.

Selon un aspect de l'invention, la surface de la bretelle d'étanchéité en contact avec le fond de plaque de la plaque collectrice et les tubes est de forme complémentaire de la surface formée par le fond de plaque de la plaque collectrice et des tubes sur laquelle ladite bretelle d'étanchéité est disposée.According to one aspect of the invention, the surface of the sealing strap in contact with the plate bottom of the collector plate and the tubes is of a complementary shape to the surface formed by the plate bottom of the collector plate and the tubes on which said sealing strap is arranged.

Cela permet de garantir une parfaite étanchéité entre la bretelle d'étanchéité et la surface sur laquelle elle est disposée, en particulier si la surface formée par le fond de plaque de la plaque collectrice et des tubes sur laquelle ladite bretelle d'étanchéité présente un dénivelé de 0 à 3 millimètres.This makes it possible to guarantee a perfect seal between the sealing strap and the surface on which it is placed, in particular if the surface formed by the bottom of the plate of the collector plate and the tubes on which said sealing strap has a difference in level from 0 to 3 millimeters.

Selon un aspect de l'invention, la bretelle d'étanchéité est en compression contre la cloison de séparation et contre la paroi de séparation de chaque tube.According to one aspect of the invention, the sealing strap is in compression against the separation wall and against the separation wall of each tube.

Selon un aspect de l'invention, la bretelle d'étanchéité est en compression contre le fond de plaque de la plaque collectrice.According to one aspect of the invention, the sealing strap is in compression against the plate bottom of the collector plate.

Selon un aspect de l'invention, la boîte collectrice comprend un pied de boîte périphérique.According to one aspect of the invention, the collector box comprises a peripheral box foot.

Selon un aspect de l'invention, le cadre du joint d'étanchéité est en compression contre la gorge périphérique de la plaque collectrice et le pied de boîte de la boîte collectrice.According to one aspect of the invention, the frame of the seal is in compression against the peripheral groove of the collector plate and the box foot of the collector box.

Selon un aspect de l'invention, le taux de compression de la bretelle d'étanchéité est compris entre 1 % et 75%.According to one aspect of the invention, the compression ratio of the sealing strap is between 1% and 75%.

Selon un aspect de l'invention, la bretelle d'étanchéité est comprimée d'une distance de compression comprise entre 0 millimètre et 3 millimètres.According to one aspect of the invention, the sealing strap is compressed by a compression distance of between 0 millimeters and 3 millimeters.

Selon un aspect de l'invention, le taux de compression du cadre du joint d'étanchéité est compris entre 17% et 53%.According to one aspect of the invention, the compression ratio of the seal frame is between 17% and 53%.

Selon un aspect de l'invention, l'épaisseur de la bretelle d'étanchéité au niveau du plateau de réception est d'au moins 3 millimètres, de préférence d'au moins 3,9 millimètres.According to one aspect of the invention, the thickness of the sealing strap at level of the receiving tray is at least 3 millimeters, preferably at least 3.9 millimeters.

Selon un aspect de l'invention, la hauteur des deux bords relevés par rapport au plateau de réception (15) est comprise entre 0,5 et 3 millimètres, en particulier entre 2 et 3 millimètres.According to one aspect of the invention, the height of the two raised edges relative to the receiving plate (15) is between 0.5 and 3 millimeters, in particular between 2 and 3 millimeters.

Selon un aspect de l'invention, le plan d'extension principale du cadre du joint d'étanchéité est situé dans un plan parallèle et distinct du plan d'extension principale de la bretelle d'étanchéité.According to one aspect of the invention, the main extension plane of the seal frame is located in a plane parallel to and distinct from the main extension plane of the sealing strap.

Selon un aspect de l'invention, le plan d'extension principale du cadre du joint d'étanchéité est situé dans un plan parallèle et distinct du plan d'extension principale de la ou des languettes latérales.According to one aspect of the invention, the main extension plane of the seal frame is located in a plane parallel to and distinct from the main extension plane of the side tab(s).

Selon un aspect de l'invention, chaque tube comprend un insert ondulé, ladite paroi de séparation comprenant au moins une des ondulations de l'insert.According to one aspect of the invention, each tube comprises a corrugated insert, said dividing wall comprising at least one of the corrugations of the insert.

D'autres caractéristiques et avantages de l'invention apparaîtront à la lecture de la description qui va suivre. Celle-ci est purement illustrative et doit être lue en regard des dessins annexés sur lesquels :

  • la figure 1 représente une vue d'ensemble d'un échangeur de chaleur,
  • la figure 2 représente une vue en perspective d'un faisceau de tubes de l'échangeur de chaleur,
  • la figure 3 représente une vue en perspective des bouches d'extrémité des tubes du faisceau de tubes,
  • la figure 4 représente une vue de face des bouches d'extrémité des tubes du faisceau de tubes,
  • la figure 5 représente une vue en perspective d'un joint d'étanchéité comportant une bretelle d'étanchéité et des languettes latérales selon l'invention,
  • les figure 5a, 5b et 5c représentent une vue de dessus du joint d'étanchéité,
  • la figure 6a représente une vue en coupe du joint d'étanchéité selon un plan passant le long de deux languettes latérales,
  • la figure 6b représente une vue en coupe du joint d'étanchéité selon un plan centré passant le long de la bretelle d'étanchéité,
  • la figure 6c représente une vue en coupe du joint d'étanchéité selon un plan décalé passant le long de la bretelle d'étanchéité,
  • la figure 7 représente une vue en coupe et en perspective d'une boîte collectrice dans laquelle débouche le faisceau de tubes,
  • la figure 8 représente une vue en coupe et en perspective d'une partie du joint d'étanchéité sur le faisceau de tubes,
  • la figure 9 représente une vue en coupe d'une plaque collectrice munies d'ouvertures de réception du faisceau de tubes.
Other characteristics and advantages of the invention will appear on reading the description which follows. This is purely illustrative and must be read in conjunction with the appended drawings in which:
  • there figure 1 represents an overview of a heat exchanger,
  • there figure 2 represents a perspective view of a bundle of heat exchanger tubes,
  • there Figure 3 represents a perspective view of the end mouths of the tubes of the tube bundle,
  • there Figure 4 represents a front view of the end mouths of the tubes of the tube bundle,
  • there figure 5 represents a perspective view of a seal comprising a sealing strap and side tabs according to the invention,
  • THE figure 5a, 5b And 5c represent a top view of the seal,
  • there figure 6a represents a sectional view of the seal along a plane passing along two side tabs,
  • there figure 6b represents a sectional view of the seal along a centered plane passing along the sealing strap,
  • there figure 6c represents a sectional view of the seal along an offset plane passing along the sealing strap,
  • there Figure 7 represents a sectional and perspective view of a collector box into which the bundle of tubes opens,
  • there figure 8 represents a sectional and perspective view of a part of the seal on the tube bundle,
  • there Figure 9 represents a sectional view of a collector plate provided with openings for receiving the bundle of tubes.

Les réalisations suivantes sont des exemples. Bien que la description se réfère à un ou plusieurs modes de réalisation, ceci ne signifie pas nécessairement que chaque élément mentionné dans le cadre d'un mode de réalisation ne concerne que ce même mode de réalisation, ou que des caractéristiques de ce mode de réalisation s'appliquent seulement à ce mode de réalisation.The following achievements are examples. Although the description refers to one or more embodiments, this does not necessarily mean that each element mentioned in the context of an embodiment relates only to this same embodiment, or only to characteristics of this embodiment. apply only to this embodiment.

La figure 1 représente un échangeur de chaleur 1 comprenant un faisceau d'une rangée de tubes 2 de circulation de fluide, en particulier d'air de suralimentation. Les tubes 2 sont empilés selon une direction d'empilement d. Les tubes 2 débouchent dans deux boîtes collectrices 26 et 27 et sont maintenus par deux plaques collectrices 3 et 9 respectivement assujetties aux boîtes collectrices 26 et 27.There figure 1 represents a heat exchanger 1 comprising a bundle of a row of tubes 2 for circulating fluid, in particular charge air. The tubes 2 are stacked in a stacking direction d. The tubes 2 open into two collector boxes 26 and 27 and are held by two collector plates 3 and 9 respectively secured to the collector boxes 26 and 27.

La figure 2 illustre l'échangeur de chaleur 1 sans les boîtes collectrices 26 et 27.There figure 2 illustrates heat exchanger 1 without collector boxes 26 and 27.

La tenue mécanique du faisceau est renforcée par des joues 4 disposées de part et d'autre du faisceau de tubes 2, dans la direction d'empilement d.The mechanical strength of the bundle is reinforced by cheeks 4 arranged on either side of the bundle of tubes 2, in the stacking direction d.

Un joint d'étanchéité 10 comprenant une bretelle d'étanchéité 13 s'étendant dans la direction d'empilement d sur une extrémité du faisceau de tubes 2, en particulier sur des bouches d'extrémité 8 des tubes 2.A seal 10 comprising a sealing strap 13 extending in the stacking direction d on one end of the bundle of tubes 2, in particular on end mouths 8 of the tubes 2.

Chaque tube 2 a en son extrémité une ouverture dont le contour 8a définit une bouche d'extrémité 8.Each tube 2 has at its end an opening whose contour 8a defines an end mouth 8.

Le tube 2 a une extrémité de préférence plate. La ligne dessinant le contour de la bouche d'extrémité 8 est fermée et s'inscrit dans un plan.Tube 2 has a preferably flat end. The line drawing the contour of the end mouth 8 is closed and fits into a plane.

Contrairement à une des architectures de l'art antérieur, le tube 2 ne comprend pas de découpe en son extrémité pour y insérer un joint d'étanchéité, en particulier une bretelle d'étanchéité. La bouche d'extrémité 8 ne comprend pas donc de découpe : la ligne dessinant le contour de la bouche d'extrémité 8 est fermée.Unlike one of the architectures of the prior art, the tube 2 does not include a cutout at its end to insert a seal, in particular a sealing strap. The end mouth 8 therefore does not include a cutout: the line drawing the outline of the end mouth 8 is closed.

Les bouches d'extrémités 8 des tubes 2 sont illustrées sur la figure 3. Chaque tube 2 comprend une bouche d'extrémité 8. Chaque bouche d'extrémité 8 est comprise dans un plan d'extension principale d'extrémité P.The end mouths 8 of the tubes 2 are illustrated on the Figure 3 . Each tube 2 includes an end mouth 8. Each end mouth 8 is included in a main end extension plane P.

De préférence, les bouches d'extrémité 8 sont de forme sensiblement rectangulaire. Elles peuvent être ovale, ovoïde, ronde, carrée...Preferably, the end mouths 8 are of substantially rectangular shape. They can be oval, ovoid, round, square...

De préférence, les plans d'extension principale d'extrémité P des bouches d'extrémité 8 des tubes 2 sont coplanaires entre eux.Preferably, the main end extension planes P of the end mouths 8 of the tubes 2 are coplanar with each other.

Selon un mode de réalisation particulier, les plans d'extension principale d'extrémité P des bouches d'extrémité 8 sont des plans parallèles distincts.According to a particular embodiment, the main end extension planes P of the end mouths 8 are distinct parallel planes.

Comme illustré sur la figure 4, chaque tube 2 comprenant un canal d'entrée 2a de circulation de fluide et un canal de sortie 2b de circulation de fluide séparés par une paroi de séparation 2c. Dans le cas du refroidisseur d'air de suralimentation, le fluide est de l'air de suralimentation.As illustrated on the Figure 4 , each tube 2 comprising an inlet channel 2a for fluid circulation and an outlet channel 2b for fluid circulation separated by a separation wall 2c. In the case of the cooler charge air, the fluid is charge air.

Chaque tube 2 comprend un insert 19 ondulé. La présence d'ondulations permet d'augmenter la surface de l'insert 19 et par conséquent la surface d'échange entre le tube 2 et l'air de suralimentation.Each tube 2 includes a corrugated insert 19. The presence of undulations makes it possible to increase the surface of the insert 19 and therefore the exchange surface between the tube 2 and the charge air.

De manière préférentielle, au moins une des ondulations de l'insert 19 constitue la paroi de séparation 2c. Sur la figure 4, la paroi de séparation 2c est une paroi creuse en forme de U.Preferably, at least one of the undulations of the insert 19 constitutes the separation wall 2c. On the Figure 4 , the separation wall 2c is a U-shaped hollow wall.

La bretelle d'étanchéité 13 est représentée en transparence sur la figure 4.The sealing strap 13 is shown in transparency on the Figure 4 .

La bretelle d'étanchéité 13 s'étend dans la direction d'empilement d des tubes 2 sur les bouches 8 des tubes 2, au dessus de la paroi de séparation 2c de chaque tube 2.The sealing strap 13 extends in the stacking direction d of the tubes 2 on the mouths 8 of the tubes 2, above the separation wall 2c of each tube 2.

Lorsque la bretelle d'étanchéité 13 est en compression contre la bouche d'extrémité 8 d'un tube 2, la paroi creuse en forme de U et en particulier l'espace intérieur de cette paroi creuse est obturé par ladite bretelle d'étanchéité 13.When the sealing strap 13 is in compression against the end mouth 8 of a tube 2, the U-shaped hollow wall and in particular the interior space of this hollow wall is closed by said sealing strap 13 .

La paroi de séparation 2c d'un tube peut également être faite de matière avec le tube 2. Par exemple, la paroi de séparation 2c peut résulter d'un pli lorsque le tube 2 est un tube plié. La paroi de séparation 2c peut également être la paroi centrale d'un tube embouti.The dividing wall 2c of a tube may also be made of material with the tube 2. For example, the dividing wall 2c may result from a fold when the tube 2 is a folded tube. The separation wall 2c can also be the central wall of a stamped tube.

La figure 5 est une illustration du joint d'étanchéité 10.There figure 5 is an illustration of seal 10.

Le joint d'étanchéité 10 comprend un cadre 11 sensiblement rectangulaire apte à être insérer dans la gorge périphérique d'une plaque collectrice.The seal 10 comprises a substantially rectangular frame 11 capable of being inserted into the peripheral groove of a collector plate.

Le joint d'étanchéité 10 comprend une bretelle d'étanchéité 13 s'étendant entre deux bords opposés du cadre 11.The seal 10 comprises a sealing strap 13 extending between two opposite edges of the frame 11.

Le joint d'étanchéité 10 comprend trois paires de deux languettes latérales 12. Chaque languette latérale 12 de chaque paire de languette latérale 12 s'étendant perpendiculairement et de part et d'autre de ladite bretelle d'étanchéité 13.The seal 10 comprises three pairs of two side tabs 12. Each side tab 12 of each pair of side tab 12 extending perpendicularly and on either side of said sealing strap 13.

Le nombre de languettes latérales 12 peut varier selon la géométrie et la taille du cadre 11.The number of side tabs 12 may vary depending on the geometry and size of the frame 11.

Par exemple, pour un cadre de longueur 152mm et de largeur 90mm, il est avantageux de prévoir six languettes latérales, réparties par paires de trois languettes latérales, chaque languette latérale 12 d'une paire de languettes latérales s'étendant de part et d'autre de la bretelle d'étanchéité 13.For example, for a frame of length 152mm and width 90mm, it is advantageous to provide six side tongues, distributed in pairs of three side tongues, each side tongue 12 of a pair of side tongues extending on either side other of the sealing strap 13.

Les languettes latérales 12 ont par exemple une épaisseur de 1,8mm.The side tabs 12 have for example a thickness of 1.8mm.

Une languette latérale 12 peut suffire à maintenir la bretelle d'étanchéité 13 selon une position prédéfinie.A side tab 12 may be sufficient to hold the sealing strap 13 in a predefined position.

Le joint d'étanchéité peut comprendre une seule paire de languettes latérales, chacune des languettes latérales s'étendant perpendiculairement de part et d'autre de la bretelle d'étanchéité.The seal may include a single pair of side tabs, each of the side tabs extending perpendicularly on either side of the sealing strap.

Sur la figure 5, les languettes latérales 12 de la ou des paires de languettes latérales 12 sont alignées l'une avec l'autre.On the figure 5 , the side tabs 12 of the pair or pairs of side tabs 12 are aligned with each other.

Les languettes latérales 12 de la ou des paires de languettes latérales 12 sont disposées le long d'une même ligne perpendiculairement à la bretelle d'étanchéité 13.The side tabs 12 of the pair or pairs of side tabs 12 are arranged along the same line perpendicular to the sealing strap 13.

Les languettes latérales 12 peuvent être disposées en quinconce le long de la bretelle d'étanchéité, alternativement d'un côté et de l'autre de ladite bretelle d'étanchéité.The side tabs 12 can be arranged staggered along the sealing strap, alternately on one side and the other of said sealing strap.

De manière préférentielle, les languettes latérales 12 sont régulièrement réparties le long de la bretelle d'étanchéité 13.Preferably, the side tabs 12 are regularly distributed along the sealing strap 13.

La bretelle d'étanchéité 13 comprend un plateau de réception 15 d'une cloison de séparation 21 de la boîte collectrice 3 (illustrée figure 7) et des moyens de maintien de la cloison de séparation 21 sur ledit plateau de réception 15.The sealing strap 13 comprises a receiving plate 15 of a partition wall 21 of the collector box 3 (illustrated Figure 7 ) and means for holding the partition wall 21 on said receiving tray 15.

La longueur du plateau de réception 15 est au moins égale à la hauteur hors-tout du faisceau de tubes 2 mesurée selon la direction d'empilement.The length of the receiving plate 15 is at least equal to the height overall of the tube bundle 2 measured in the stacking direction.

Les moyens de maintien de ladite cloison de séparation 21 sur ledit plateau de réception 15 comprennent deux bords relevés 14 situés de part et d'autre du plateau de réception 15.The means for holding said partition wall 21 on said receiving plate 15 comprise two raised edges 14 located on either side of the receiving plate 15.

La figure 6a représente une vue en coupe du joint d'étanchéité 10 de la figure 5a le long de la ligne Via-Via selon un plan passant le long de deux languettes latérales 12 et perpendiculaire à la bretelle d'étanchéité 13.There figure 6a represents a sectional view of the seal 10 of the figure 5a along the Via-Via line according to a plane passing along two lateral tongues 12 and perpendicular to the sealing strap 13.

Le plan d'extension principale du cadre 11 du joint d'étanchéité 10 est situé dans un plan parallèle et distinct du plan d'extension principale de la bretelle d'étanchéité 13.The main extension plane of the frame 11 of the seal 10 is located in a plane parallel to and distinct from the main extension plane of the sealing strap 13.

Le plan d'extension principale du cadre 11 du joint d'étanchéité 10 est situé dans un plan parallèle et distinct du plan d'extension principale des languettes latérales 12.The main extension plane of the frame 11 of the seal 10 is located in a plane parallel to and distinct from the main extension plane of the side tabs 12.

Les bords relevés 14 sont de forme symétrique par rapport à un plan perpendiculaire aux languettes latérales 12 et passant par le centre du plateau de réception 15.The raised edges 14 are symmetrical in shape with respect to a plane perpendicular to the side tongues 12 and passing through the center of the receiving plate 15.

Les deux bords relevés 14 ont une hauteur suffisante pour maintenir une cloison de séparation 21 sur le plateau de réception 15. Par exemple, la hauteur des deux bords relevés 14 mesurée depuis et perpendiculairement au plateau de réception 15 en leur point le plus haut est comprise entre 0,5 et 3 millimètres, en particulier entre 2 et 3 mm.The two raised edges 14 have a sufficient height to maintain a dividing wall 21 on the receiving plate 15. For example, the height of the two raised edges 14 measured from and perpendicular to the receiving plate 15 at their highest point is included between 0.5 and 3 millimeters, in particular between 2 and 3 mm.

Les deux bords relevés 14 ont une section transversale de la forme d'un triangle rectangle.The two raised edges 14 have a cross section in the shape of a right triangle.

La bretelle d'étanchéité 13 a une section transversale en forme de réceptacle creux dont les parois intérieures latérales sont évasées depuis le plateau de réception 15 qui est le fond du réceptacle et dont les parois extérieures latérales sont à angle droit par rapport au plan du plateau de réception 15.The sealing strap 13 has a cross section in the form of a hollow receptacle whose interior side walls are flared from the receiving plate 15 which is the bottom of the receptacle and whose exterior side walls are at right angles to the plane of the plate reception 15.

Les languettes latérales 12 comprennent une surface 12a destinée à être mise au contact d'une plaque collectrice.The side tabs 12 comprise a surface 12a intended to be brought into contact with a collector plate.

La surface 12a de chaque languette latérale 12 est plane.The surface 12a of each side tongue 12 is flat.

Les surfaces 12a des languettes latérales 12 sont coplanaires ente elles.The surfaces 12a of the side tongues 12 are coplanar with each other.

Il est cependant envisageable que les surfaces 12a ne soient pas planes. En effet, la fonction des languettes latérales 12a est le maintien de la bretelle d'étanchéité 13 à une distance prédéfinie du cadre 11 et non une fonction d'étanchéité vis-à-vis de la plaque collectrice sur laquelle le joint d'étanchéité 10 est posé.It is however possible that the surfaces 12a are not flat. Indeed, the function of the side tabs 12a is to maintain the sealing strap 13 at a predefined distance from the frame 11 and not a sealing function with respect to the collector plate on which the seal 10 is posed.

La figure 6b représente une vue en coupe du joint d'étanchéité 10 de la figure 5b le long de la ligne Vlb-Vlb selon un plan passant le long de bretelle d'étanchéité 13 au centre du plateau de réception 15 et perpendiculaire aux languettes latérales 12.There figure 6b represents a sectional view of the seal 10 of the figure 5b along the line Vlb-Vlb according to a plane passing along the sealing strap 13 in the center of the receiving plate 15 and perpendicular to the side tabs 12.

Le joint d'étanchéité 10 est d'épaisseur constante au niveau du plateau de réception 15.The seal 10 is of constant thickness at the level of the receiving plate 15.

La bretelle d'étanchéité 13 comprend une surface 13a destinée à être mise au contact d'une plaque collectrice.The sealing strap 13 comprises a surface 13a intended to be brought into contact with a collector plate.

La surface 13a de la bretelle d'étanchéité 13 est plane.The surface 13a of the sealing strap 13 is flat.

Selon un autre mode de réalisation illustré en figure 10, la surface 13a de la bretelle d'étanchéité 13 peut être non plane.According to another embodiment illustrated in Figure 10 , the surface 13a of the sealing strap 13 may be non-planar.

La figure 6c représente une vue en coupe du joint d'étanchéité 10 de la figure 5c le long de la ligne Vlc-Vlc selon un plan passant le long d'un bord relevé 14 de la bretelle d'étanchéité 13 et perpendiculaire aux languettes latérales 12.There figure 6c represents a sectional view of the seal 10 of the figure 5c along the line Vlc-Vlc according to a plane passing along a raised edge 14 of the sealing strap 13 and perpendicular to the side tabs 12.

La longueur des bords relevés 14 est inférieure à la longueur du plateau de réception 15. Le bord relevé est continu.The length of the raised edges 14 is less than the length of the receiving plate 15. The raised edge is continuous.

D'autres modes de réalisation sont possibles. La longueur des bords relevés 14 peut être égale à celle du plateau de réception 15. Les bords relevés peuvent être discontinus et ne comprendre que des tronçons régulièrement répartis le long du plateau de réception 15.Other embodiments are possible. The length of the raised edges 14 may be equal to that of the receiving plate 15. The raised edges may be discontinuous and include only sections regularly distributed along the receiving plate 15.

Les bords relevés 14 sont identiques mais peuvent être de hauteur ou forme différente.The raised edges 14 are identical but can be of different height or shape.

Les bords relevés 14 sont fait de matière avec le plateau de réception. Il peuvent être également faits d'un matériau différent ou identique de celui du plateau de réception 15 et par exemple collé sur ledit plateau de réception 15.The raised edges 14 are made of material with the receiving tray. They can also be made of a material different or identical to that of the receiving plate 15 and for example glued to said receiving plate 15.

Sur la figure 7, la boîte collectrice 26 est assujettie à la plaque collectrice 3. Le pied 22 de la boîte collectrice 26 est serti à la plaque collectrice 3 par des pattes de sertissage.On the Figure 7 , the collector box 26 is secured to the collector plate 3. The foot 22 of the collector box 26 is crimped to the collector plate 3 by crimping tabs.

La boîte collectrice 26 comporte une cloison de séparation 21 délimitant une chambre d'entrée 25 dans les canaux d'entrée 2a des tubes 2 et une chambre de sortie 20 pour les canaux de sortie 2b des tubes 2.The collector box 26 comprises a partition wall 21 delimiting an inlet chamber 25 in the inlet channels 2a of the tubes 2 and an outlet chamber 20 for the outlet channels 2b of the tubes 2.

La cloison de séparation 21 est disposée sur la bretelle d'étanchéité 13, en particulier sur le plateau de réception 15.The separation wall 21 is placed on the sealing strap 13, in particular on the receiving plate 15.

La cloison de séparation 21 est maintenue par les bords relevés 14 de la bretelle d'étanchéité 13.The partition wall 21 is held by the raised edges 14 of the sealing strap 13.

Les bords relevés 14 de la bretelle d'étanchéité 13 sont symétriques par rapport à la cloison de séparation 21.The raised edges 14 of the sealing strap 13 are symmetrical with respect to the partition wall 21.

Le cadre 11 du joint d'étanchéité 10 est localisé dans une gorge périphérique 5 de la plaque collectrice 3.The frame 11 of the seal 10 is located in a peripheral groove 5 of the collector plate 3.

Le cadre 11 du joint d'étanchéité 10 est comprimé entre le pied de boîte 22 de la boîte collectrice 26 et le fond de la gorge périphérique 5 de la plaque collectrice 3.The frame 11 of the seal 10 is compressed between the box foot 22 of the collector box 26 and the bottom of the peripheral groove 5 of the collector plate 3.

La bretelle d'étanchéité 13 est en contact et de préférence comprimée contre la cloison de séparation 21 et contre la plaque collectrice 3 et les tubes 2, comme illustré figure 8.The sealing strap 13 is in contact and preferably compressed against the partition wall 21 and against the collector plate 3 and the tubes 2, as illustrated figure 8 .

La plaque collectrice 3 comprend un fond de plaque 6 percé d'ouvertures 7 de réception du faisceau de tubes 2.The collector plate 3 comprises a plate bottom 6 pierced with openings 7 for receiving the bundle of tubes 2.

Les ouvertures 7 présentent des collets 9 inversés, c'est-à-dire faisant saillie du fond de plaque 6 du côté opposé de la boîte collectrice 26. Autrement dit, les collets 9 font saillie du fond de plaque 6 du côté opposé à la gorge périphérique 5.The openings 7 have inverted collars 9, that is to say making projection of the bottom of the plate 6 on the opposite side of the collector box 26. In other words, the collars 9 project from the bottom of the plate 6 on the side opposite the peripheral groove 5.

Les collets 9 s'étendent à partir du fond de plaque 6 autour des tubes 2 dont ils enserrent les extrémités. Avantageusement les tubes 2 sont brasés aux collets 9.The collars 9 extend from the bottom of the plate 6 around the tubes 2, the ends of which they enclose. Advantageously, the tubes 2 are brazed to the collars 9.

Selon un autre mode de réalisation, par exemple illustré en figure 10, les collets peuvent être orientés dans le sens opposé.According to another embodiment, for example illustrated in Figure 10 , the collars can be oriented in the opposite direction.

Les languettes latérales 12 s'étendent sur le fond de plaque 6 de la plaque collectrice 3.The side tabs 12 extend over the bottom of the plate 6 of the collector plate 3.

Dans le mode de réalisation de la figure 8, les bouches d'extrémité 8 des tubes 2 sont sensiblement coplanaires entre elles et avec le fond de plaque 6.In the embodiment of the figure 8 , the end mouths 8 of the tubes 2 are substantially coplanar with each other and with the bottom of the plate 6.

La surface 13a de la bretelle d'étanchéité 13 au contact de la plaque collectrice 3 et en particulier du fond de plaque 6 et au contact des bouches d'extrémité 8 des tubes est plane.The surface 13a of the sealing strap 13 in contact with the collector plate 3 and in particular with the bottom of the plate 6 and in contact with the end mouths 8 of the tubes is flat.

La surface 13a de la bretelle d'étanchéité 13 est comprise dans les plans d'extension principale d'extrémité P des bouches d'extrémité 8 des tubes 2.The surface 13a of the sealing strap 13 is included in the main end extension planes P of the end mouths 8 of the tubes 2.

Les plans d'extension principale d'extrémité P des bouches d'extrémité 8 des tubes 2 sont dans le même plan que le fond de plaque 6.The main end extension planes P of the end mouths 8 of the tubes 2 are in the same plane as the bottom of the plate 6.

L'élasticité de la bretelle d'étanchéité 13 associée à sa compression contre les bouches d'extrémité 8 et le fond de plaque 6 permet de combler les défauts de coplanarité entre les bouches d'extrémité 8 des tubes 2 et du fond de plaque 6 pour garantir une bonne étanchéité avec la cloison de séparation 21 de la boîte collectrice 26.The elasticity of the sealing strap 13 associated with its compression against the end mouths 8 and the bottom of the plate 6 makes it possible to fill in the coplanarity defects between the end mouths 8 of the tubes 2 and the bottom of the plate 6 to guarantee a good seal with the separation wall 21 of the collector box 26.

En effet, les tolérances de fabrication des tubes 2 et de la plaque collectrice 3 ainsi que les tolérances d'assemblage peuvent engendrer un enfoncement des tubes 2 d'une hauteur dh par rapport au fond de plaque ou un dépassement dh par rapport au fond de plaque. L'enfoncement et le dépassement sont des distances qui sont mesurées localement entre le plan contenant la bouche d'extrémité d'un tube et le fond de plaque qui lui est adjacent.Indeed, the manufacturing tolerances of the tubes 2 and the collector plate 3 as well as the assembly tolerances can cause the tubes 2 to sink by a height dh relative to the bottom of the plate or to exceed dh relative to the bottom of the plate. plate. The depression and overrun are distances which are measured locally between the plane containing the end mouth of a tube and the bottom of the plate which is adjacent to it.

Sur la figure 9, le dépassement correspond à une hauteur dh positive, l'enfoncement correspond à une hauteur dh négative.On the Figure 9 , the excess corresponds to a positive height dh, the depression corresponds to a negative height dh.

Au-delà d'une certaine hauteur dh une bretelle d'étanchéité 13 de surface 13a plane ne convient plus.Beyond a certain height dh a sealing strap 13 with a flat surface 13a is no longer suitable.

Ce peut être le cas dans une architecture de plaque collectrice à collets inversés lorsque les tubes 2 sont conçus pour dépasser du fond de plaque 6 de la plaque collectrice 3 et c'est particulièrement le cas lorsque les collets sont standards, comme illustré en figure 10.This may be the case in a collector plate architecture with inverted collars when the tubes 2 are designed to protrude from the bottom of the plate 6 of the collector plate 3 and this is particularly the case when the collars are standard, as illustrated in Figure 10 .

Sur la figure 10, les ouvertures 7 du fond de plaque 6 de la plaque collectrice comprennent des collets faisant saillie du fond de plaque 6 du côté la boîte collectrice à laquelle la plaque collectrice est assujettie.On the Figure 10 , the openings 7 of the bottom of the plate 6 of the collector plate comprise collars projecting from the bottom of the plate 6 on the side of the collector box to which the collector plate is secured.

Les tubes 2 étant maintenus par les collets 9, ils font saillie du fond de plaque 6 de plusieurs millimètres, dans la boîte collectrice.The tubes 2 being held by the collars 9, they project from the bottom of the plate 6 by several millimeters, into the collector box.

Dans cette configuration, la surface 13a de la bretelle d'étanchéité 13 en contact avec le fond de plaque 6 de la plaque collectrice 3 et les bouches d'extrémité 8 des tubes 2 est de forme complémentaire de la surface formée par le fond de plaque 6 de la plaque collectrice 3 et des bouches d'extrémité 8 des tubes 2 sur laquelle ladite bretelle d'étanchéité 13 est disposée.In this configuration, the surface 13a of the sealing strap 13 in contact with the plate bottom 6 of the collector plate 3 and the end mouths 8 of the tubes 2 is of complementary shape to the surface formed by the plate base 6 of the collector plate 3 and the end mouths 8 of the tubes 2 on which said sealing strap 13 is arranged.

Ainsi, la surface 13a de la bretelle d'étanchéité 13 est ondulée, la profondeur des ondulations s'adaptant au profil des creux et vagues engendrée par la surface du fond de plaque 6, des collets 9, et des bouches d'extrémités 8 des tubes 2.Thus, the surface 13a of the sealing strap 13 is corrugated, the depth of the undulations adapting to the profile of the hollows and waves generated by the surface of the plate bottom 6, the collars 9, and the end mouths 8 of the tubes 2.

Ainsi, selon l'enfoncement ou le dépassement des bouches d'extrémité 8 des tubes 2 par rapport au fond de plaque 6 de la plaque collectrice 3, la surface 13a de la bretelle d'étanchéité 13 est soit plane soit ondulée.Thus, depending on the depth or protrusion of the end mouths 8 of the tubes 2 relative to the bottom of the plate 6 of the collector plate 3, the surface 13a of the sealing strap 13 is either flat or corrugated.

Par exemple, le joint d'étanchéité 10 comprend une bretelle d'étanchéité 13 dont l'épaisseur mesurée au niveau du plateau de réception 15 est de 4 millimètres. La distance de compression maximale de la bretelle d'étanchéité 13 au niveau du plateau d'étanchéité 15 est de 3,06 millimètres. La distance de compression minimale est de 0,03 millimètre.For example, the seal 10 comprises a sealing strap 13 whose thickness measured at the receiving plate 15 is 4 millimeters. The maximum compression distance of the sealing strap 13 at the level of the sealing plate 15 is 3.06 millimeters. The minimum compression distance is 0.03 millimeters.

La distance de compression maximale de la bretelle d'étanchéité 13 au niveau du plateau d'étanchéité 15 étant de 3,06 millimètres, la marge de compression est donc de 0,94 millimètre. Pour un dépassement dh des bouches d'extrémité 8 inférieur à 0,94 millimètre, une bretelle d'étanchéité 13 avec une surface 13a plane peut convenir. Pour un dépassement dh supérieur à 0,94 millimètre, il y a interférence entre la cloison de séparation 21 et les bouches d'extrémité 8 des tubes 2, ainsi qu'une découpe de la bretelle d'étanchéité 13. Il est donc préférable que la surface 13a de la bretelle d'étanchéité 13 soit ondulée et localement augmentée pour combler les creux causés par le dépassement dh des bouches d'extrémité 8 par rapport au fond de plaque 6.The maximum compression distance of the sealing strap 13 at the level of the sealing plate 15 being 3.06 millimeters, the compression margin is therefore 0.94 millimeters. For an overhang dh of the end mouths 8 of less than 0.94 millimeters, a sealing strap 13 with a flat surface 13a may be suitable. For an excess dh greater than 0.94 millimeter, there is interference between the partition wall 21 and the end mouths 8 of the tubes 2, as well as a cutout of the sealing strap 13. It is therefore preferable that the surface 13a of the sealing strap 13 is corrugated and locally increased to fill the hollows caused by the protrusion dh of the end mouths 8 relative to the bottom of the plate 6.

La distance de compression minimale de la bretelle d'étanchéité 13 au niveau du plateau d'étanchéité 15 est de 0,03 millimètre lorsque l'enfoncement maximal dh est de 0,66mm. Pour un enfoncement dh supérieur à 0,66 millimètres, la surface 13a de la bretelle d'étanchéité 13 est de préférence ondulée.The minimum compression distance of the sealing strap 13 at the level of the sealing plate 15 is 0.03 millimeter when the maximum depression dh is 0.66mm. For a depression dh greater than 0.66 millimeters, the surface 13a of the sealing strap 13 is preferably corrugated.

Claims (8)

  1. Heat exchanger (1) for a motor vehicle, comprising:
    - a bundle of tubes (2) stacked in a stacking direction (d), each tube (2) comprising at least one fluid circulation inlet channel (2a) and one fluid circulation outlet channel (2b) that are separated by a separating wall (2c) and each tube (2) comprising an end mouth (8),
    - a header plate (3) comprising a plate bottom (6) pierced with openings (7) for receiving the bundle of tubes (2), said header plate (3) comprising a peripheral groove (5),
    - a header tank (26) secured to the header plate (3) and having a separating partition (21) delimiting an inlet chamber (25) into the inlet channels (2a) of the tubes (2) and an outlet chamber (20) for the outlet channels (2b) of the tubes (2),
    - a seal (10) disposed on the header plate (3) and having a sealing strap (13) for ensuring sealing with the separating partition (21), said sealing strap (13) extending in the stacking direction (d) of the tubes (2) over the end mouths (8) of the tubes (2), above the separating wall (2c) of each tube (2), the end mouths (8) not comprising a cutout in the zone of contact with the sealing strap (13), said sealing strap (13) comprising a receiving plateau (15) for the separating partition (21) and means for holding said separating partition (21) on said receiving plateau (15),
    - the seal (10) comprising a frame (11) located in the peripheral groove (5) of the header plate (3),
    - the sealing strap (13) extending between two opposite edges of the frame (11), characterized in that the seal (10) comprises at least one lateral tongue (12) extending perpendicularly from the sealing strap (13).
  2. Heat exchanger (1) according to Claim 1, characterized in that the thickness of the sealing strap (13) at the receiving plateau (15) is greater than 3 millimetres.
  3. Heat exchanger (1) according to either one of Claims 1 and 2, characterized in that the means for holding said separating partition (21) comprise two raised edges (14) situated on either side of the receiving plateau (15).
  4. Heat exchanger (1) according to Claim 3, characterized in that the two raised edges (14) have a height with respect to the receiving plateau (15) of between 0.5 and 3 millimetres, in particular between 2 and 3 millimetres.
  5. Heat exchanger (1) according to any one of the preceding claims, characterized in that the lateral tongue (12) extends over the plate bottom (6) of the header plate (3).
  6. Heat exchanger (1) according to any one of the preceding claims, characterized in that the openings (7) comprise necks (9) protruding from the plate bottom (6) on the opposite side from the header tank (26).
  7. Heat exchanger (1) according to any one of the preceding claims, characterized in that the end mouths (8) of the tubes (2) are substantially coplanar with the plate bottom (6).
  8. Heat exchanger (1) according to any one of the preceding claims, characterized in that each tube (2) comprises a corrugated insert (19), said separating wall (2c) comprising at least one of the corrugations of the insert (19).
EP18165325.4A 2017-04-04 2018-03-30 Heat exchanger with u-shaped flow Active EP3385655B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1752884A FR3064734B1 (en) 2017-04-04 2017-04-04 U-SHAPED FLUID CIRCULATION HEAT EXCHANGER

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EP3385655A1 EP3385655A1 (en) 2018-10-10
EP3385655B1 true EP3385655B1 (en) 2024-04-24

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102019208327A1 (en) * 2019-06-07 2020-12-10 Mahle Lnternational Gmbh Heat exchanger

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Publication number Priority date Publication date Assignee Title
FR2917819B1 (en) * 2007-06-22 2018-04-27 Valeo Systemes Thermiques Branche Thermique Moteur HEAT EXCHANGE MODULE FOR TWO HEAT EXCHANGE CIRCUITS
EP2317271A1 (en) * 2009-10-30 2011-05-04 Delphi Technologies, Inc. U-flow radiator having an end tank with a Z-shape separator
DE102010063264A1 (en) * 2010-12-16 2012-06-21 Mahle International Gmbh Clippings

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