EP0779488A1 - Heat exchanger, more in particularly for automotive vehicle - Google Patents

Heat exchanger, more in particularly for automotive vehicle Download PDF

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Publication number
EP0779488A1
EP0779488A1 EP96119459A EP96119459A EP0779488A1 EP 0779488 A1 EP0779488 A1 EP 0779488A1 EP 96119459 A EP96119459 A EP 96119459A EP 96119459 A EP96119459 A EP 96119459A EP 0779488 A1 EP0779488 A1 EP 0779488A1
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EP
European Patent Office
Prior art keywords
crimping
heat exchanger
peripheral
longitudinal extension
zones
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Granted
Application number
EP96119459A
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German (de)
French (fr)
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EP0779488B1 (en
Inventor
Carlos Martins
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Valeo Thermique Moteur SA
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Valeo Thermique Moteur SA
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Publication of EP0779488A1 publication Critical patent/EP0779488A1/en
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    • 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

Definitions

  • the invention relates to heat exchangers, in particular for a motor vehicle, and more particularly those made of brazed or welded aluminum, of the type comprising a fluid box provided with a peripheral heel, assembled by crimping, with interposition of a gasket. sealing, on a collecting plate provided with a peripheral edge.
  • the peripheral edge delimits a generally U-shaped peripheral groove intended to receive at least partially the peripheral heel and the seal, and this peripheral edge has in a terminal part a niche length modulation forming crimping lugs intended to rest on an upper face of the peripheral heel to immobilize it relative to the collector plate.
  • Such crimping lugs extend in particular on the longitudinal sides (length) of the exchanger.
  • An object of the invention is therefore to provide a heat exchanger which does not have all or part of the drawbacks of exchangers of the prior art.
  • the invention proposes a heat exchanger of the type described in the introduction, in which the peripheral heel has at its upper face a thickness modulation forming an alternation of thick zones and thin zones, each thick zone being arranged. to be inserted between two adjacent crimp tabs after folding of these. Thus, the crimping tabs are supported on the thin areas of the upper face opposite which they are located.
  • the distance between two neighboring thick zones being at least equal, by greater value, to the sum of the longitudinal extension of a crimping lug and of a multiple, positive or zero, of the longitudinal extension of a crimping lug and the space separating two neighboring crimping lugs.
  • the distance between two neighboring thick zones is equal, by greater value, to the longitudinal extension of a crimping tab, and the longitudinal extension of a thick zone is equal, by lower value, to the longitudinal extension of a crimping lug.
  • FIG. 1A a part of a fluid box 1, generally made of molded rigid plastic, and a corresponding part of a metal collecting plate 2, for example, of an upper part of a heat exchanger.
  • the fluid which circulates in the exchanger is water. Therefore, we will call the fluid box: water box.
  • the invention also applies to exchangers operating for example with oil or with a gas.
  • the water box 1 comprises a shaped wall 3 intended to receive the water and comprising on its periphery a peripheral heel 4 forming a bead, comprising an upper support face 5, an internal face 6, an external face 7 and a lower face 8.
  • the collector plate 2 comprises a central part 9 provided with openings 10 allowing the passage of tube ends 11 (see FIG. 2), and over the entire periphery of this central part, a peripheral edge 12 shaped, by folding, before assembly of the exchanger.
  • the tubes 3 form a bundle of tubes and are generally made of aluminum, or of a fairly ductile alloy comprising aluminum.
  • the collector plate is preferably made of an aluminum and manganese alloy belonging to the so-called "3000" series.
  • the peripheral edge 12 delimits an internal face 13, a bottom 14 and an external face 15 of a peripheral groove 16 of generally U-shaped arranged to accommodate the peripheral heel 4 with the interposition of a seal 17 made of a material deformable and waterproof, for example made of elastomer.
  • the external face 15 of the peripheral edge has in a terminal part a length modulation in a crenel forming crimping lugs 19.
  • the crimping lugs are regularly spaced from each other by a (longitudinal) distance D, each lug having by elsewhere a longitudinal extension L1.
  • crimping tabs which are precut, are intended to bear on the upper support face 5 of the peripheral heel 4 to immobilize it relative to the collector plate 2 with interposition of the gasket 17.
  • the latter is located thus disposed in the peripheral groove 16 between the external face 15 and the bottom 14 of the peripheral edge 12, and the lower face 8 of the peripheral heel 4.
  • this seal can take other forms and therefore it can be in contact with other faces.
  • the peripheral heel 4 of the water box which is preferably produced by molding a reinforced plastic material, has at its upper face 5 a thickness modulation forming an alternation of thick zone 19 and thin zone 20.
  • thick zone is understood to mean an area of the peripheral heel which has a thickness identical to or slightly less than that of the peripheral heels of water boxes of the prior art. Consequently, the so-called thin zones are those which have a thickness considerably less than that of the thick zones.
  • a heel having such a thickness modulation had mechanical characteristics substantially identical to those of the heels of the prior art, and in any case largely sufficient to withstand the various stresses in operation and during assembly.
  • peripheral groove 16 delimited by the peripheral edge 12 is notably less deep than in known exchangers, which reduces the length of the lever arm of the crimping lugs 18 accordingly. Consequently, the stresses exerted on the lugs of crimping of the proposed exchanger are much less important than that which they would undergo in a prior art exchanger.
  • the amount of material required to make it is significantly less than before, which reduces the manufacturing cost and contributes to reducing the heat exchanger.
  • the distance which separates two neighboring thick zones 19 is equal, by lower value, to the longitudinal extension L1 of a crimping lug 18, and the extension longitudinal L2 of a thick zone 19 (or the distance separating two thin zones 20) is equal, by greater value, to the distance D between two adjacent crimping lugs 18.
  • each crimping tab is inserted between two neighboring thick zones 19 and rests on the thin zone 20 opposite which it is located.
  • the legs are folded back after the metal parts have been joined (collector plate 2 and tubes 11) by brazing in an oven, for example, then positioning of the seals 17 and the peripheral heel 4 of the water box in the peripheral groove 16. It takes place inwards, along an axis XX substantially parallel to a longitudinal side of the exchanger, until the crimping lugs 18 press the upper face 5 of the peripheral heel 4 of each water box. 1 against the peripheral edge 12 of the collector plate 2, thus compressing the seals 17, while immobilizing said peripheral heel 4 inside the peripheral groove 16.
  • the intensity of the compression can be adjusted by moving the position of the X-X folding axis.
  • the distance between two neighboring thick zones is at least equal, by greater value, to the sum of the longitudinal extension L1 of a crimping lug and of a multiple of the longitudinal extension L1 of a crimping tab and the space separating two neighboring crimping tabs D.
  • crimping lugs having a different longitudinal extension (upper or lower) than that of the thin zones.

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

Abstract

The heat exchanger consists of a fluid chamber cover (1) with an edge (4) shaped to engage with the peripheral channel (16) of a collector plate (2) and a seal. The edges (12) of the plate are turned upwards and cut to form projections which act as retaining lugs for the cover. The edge (4) of the cover is made with alternating portions of different thicknesses, forming recesses to receive the turned-over tips of the retaining lugs. The cover can be made, for example, by moulding, and the thicker portions (19) round its edge are spaced at intervals equivalent to the width of the lugs.

Description

L'invention concerne les échangeurs de chaleur, notamment pour véhicule automobile, et plus particulièrement ceux en aluminium brasé ou soudé, du type comprenant une boîte à fluide munie d'un talon périphérique, assemblée par sertissage, avec interposition d'un joint d'étanchéité, sur une plaque collectrice munie d'un bord périphérique.The invention relates to heat exchangers, in particular for a motor vehicle, and more particularly those made of brazed or welded aluminum, of the type comprising a fluid box provided with a peripheral heel, assembled by crimping, with interposition of a gasket. sealing, on a collecting plate provided with a peripheral edge.

Dans certains échangeurs de chaleur connus, de forme générale rectangulaire, le bord périphérique délimite une gorge périphérique de forme générale en U destinée à recevoir au moins partiellement le talon périphérique et le joint d'étanchéité, et ce bord périphérique présente en une partie terminale une modulation de longueur en créneau formant pattes de sertissage destinées à s'appuyer sur une face supérieure du talon périphérique pour l'immobiliser relativement à la plaque collectrice.In certain known heat exchangers, of generally rectangular shape, the peripheral edge delimits a generally U-shaped peripheral groove intended to receive at least partially the peripheral heel and the seal, and this peripheral edge has in a terminal part a niche length modulation forming crimping lugs intended to rest on an upper face of the peripheral heel to immobilize it relative to the collector plate.

De telles pattes de sertissage s'étendent notamment sur les côtés longitudinaux (longueur) de l'échangeur.Such crimping lugs extend in particular on the longitudinal sides (length) of the exchanger.

Dans ce type d'échangeur, pour des raisons de résistance aux contraintes mécanique et de pression, le talon périphérique de la boîte à fluide est beaucoup plus épais que ne l'est la paroi qui délimite ladite boîte.In this type of exchanger, for reasons of resistance to mechanical stresses and pressure, the peripheral heel of the fluid box is much thicker than is the wall which delimits said box.

Or, plus le talon est épais, plus la gorge périphérique doit être profonde, et donc, plus la distance qui sépare le fond de la gorge des pattes de sertissage est grande. Cela a pour conséquence de créer un fort effet de levier qui favorise le fléchissement du bord périphérique et des pattes de sertissage sous l'effet de pressions élevées, et ne permet pas une pression constante desdites pattes de sertissage sur la surface d'appui du talon périphérique de la boîte à fluide.However, the thicker the heel, the deeper the peripheral groove, and therefore, the greater the distance between the bottom of the groove and the crimp tabs. This has the consequence of creating a strong leverage effect which favors the bending of the peripheral edge and of the crimping lugs under the effect of high pressures, and does not allow a constant pressure of said crimping lugs on the bearing surface of the heel. fluid box device.

Cela peut provoquer des fuites locales au niveau du joint d'étanchéité, et parfois, une désolidarisation de la plaque collectrice, par fléchissement de ses bords, et donc une perte de compression du joint d'étanchéité qui entraîne une fuite plus importante encore.This can cause local leaks at the seal, and sometimes, disconnection of the plate collector, by bending of its edges, and therefore a loss of compression of the seal which leads to an even greater leak.

Ces effets sont d'autant plus marqués dans les échangeurs actuels qui comprennent une plaque collectrice et des tubes réalisés en aluminium ou dans un alliage d'aluminium et de manganèse (principalement pour des raisons de ductilité, de coût et de poids), car ce type d'alliage ne possède pas de bonnes caractéristiques mécaniques.These effects are all the more marked in current exchangers which include a collector plate and tubes made of aluminum or of an aluminum and manganese alloy (mainly for reasons of ductility, cost and weight), because this type of alloy does not have good mechanical characteristics.

Toutes les solutions proposées par l'homme de l'art pour tenter de résoudre ce problème nécessitent l'utilisation de pièces métalliques de renforcement souvent compliquées à réaliser. En conséquence, il n'existe pas actuellement de solution qui permette de résoudre le problème énoncé ci-avant simplement et à moindre coût de fabrication.All the solutions proposed by a person skilled in the art in an attempt to solve this problem require the use of metallic reinforcing parts which are often complicated to produce. Consequently, there is currently no solution which makes it possible to solve the problem stated above simply and at lower manufacturing cost.

Un but de l'invention est donc de procurer un échangeur de chaleur qui ne présente pas tout ou partie des inconvénients des échangeurs de la technique antérieure.An object of the invention is therefore to provide a heat exchanger which does not have all or part of the drawbacks of exchangers of the prior art.

L'invention propose à cet effet un échangeur de chaleur du type décrit en introduction, dans lequel le talon périphérique présente au niveau de sa face supérieure une modulation d'épaisseur formant une alternance de zones épaisses et de zones minces, chaque zone épaisse étant agencée pour s'insérer entre deux pattes de sertissage voisines après repliement de celles-ci. Ainsi, les pattes de sertissage s'appuient sur les zones minces de la face supérieure en regard desquelles elles se trouvent.To this end, the invention proposes a heat exchanger of the type described in the introduction, in which the peripheral heel has at its upper face a thickness modulation forming an alternation of thick zones and thin zones, each thick zone being arranged. to be inserted between two adjacent crimp tabs after folding of these. Thus, the crimping tabs are supported on the thin areas of the upper face opposite which they are located.

Selon une autre caractéristique de l'invention, la distance entre deux zones épaisses voisines étant au moins égale, par valeur supérieure, à la somme de l'extension longitudinale d'une patte de sertissage et d'un multiple, positif ou nul, de l'extension longitudinale d'une patte de sertissage et de l'espace séparant deux pattes de sertissage voisines.According to another characteristic of the invention, the distance between two neighboring thick zones being at least equal, by greater value, to the sum of the longitudinal extension of a crimping lug and of a multiple, positive or zero, of the longitudinal extension of a crimping lug and the space separating two neighboring crimping lugs.

Dans un mode de réalisation préféré de l'invention, la distance entre deux zones épaisses voisines est égale, par valeur supérieure, à l'extension longitudinale d'une patte de sertissage, et l'extension longitudinale d'une zone épaisse est égale, par valeur inférieure, à l'extension longitudinale d'une patte de sertissage.In a preferred embodiment of the invention, the distance between two neighboring thick zones is equal, by greater value, to the longitudinal extension of a crimping tab, and the longitudinal extension of a thick zone is equal, by lower value, to the longitudinal extension of a crimping lug.

Dans la description qui suit, faite à titre d'exemple, on se réfère aux dessins annexés, sur lesquels :

  • les figures 1A et 1B illustrent, en vue de trois-quart, une partie supérieure ou inférieure d'un échangeur de chaleur selon l'invention, dans un mode de réalisation préféré, respectivement avant et après assemblage; et
  • la figure 2 est une coupe transversale selon l'axe II-II de l'échangeur illustré sur la figure 1B.
In the description which follows, given by way of example, reference is made to the appended drawings, in which:
  • Figures 1A and 1B illustrate, in three-quarter view, an upper or lower part of a heat exchanger according to the invention, in a preferred embodiment, respectively before and after assembly; and
  • Figure 2 is a cross section along the axis II-II of the exchanger illustrated in Figure 1B.

Sur la figure 1A sont illustrées une partie d'une boîte à fluide 1, généralement en matière plastique rigide moulée, et une partie correspondante d'une plaque collectrice métallique 2, par exemple, d'une partie supérieure d'un échangeur de chaleur.In FIG. 1A are shown a part of a fluid box 1, generally made of molded rigid plastic, and a corresponding part of a metal collecting plate 2, for example, of an upper part of a heat exchanger.

On considère dans la suite de la description que le fluide qui circule dans l'échangeur est de l'eau. Par conséquent, on appellera la boîte à fluide : boîte à eau. Mais, il est clair que l'invention s'applique également aux échangeurs fonctionnant par exemple avec de l'huile ou avec un gaz.It is considered in the following description that the fluid which circulates in the exchanger is water. Therefore, we will call the fluid box: water box. However, it is clear that the invention also applies to exchangers operating for example with oil or with a gas.

La boîte à eau 1 comprend une paroi 3 conformée destinée à recevoir l'eau et comprenant sur sa périphérie un talon périphérique 4 formant bourrelet, comportant une face supérieure d'appui 5, une face interne 6, une face externe 7 et une face inférieure 8.The water box 1 comprises a shaped wall 3 intended to receive the water and comprising on its periphery a peripheral heel 4 forming a bead, comprising an upper support face 5, an internal face 6, an external face 7 and a lower face 8.

Dans toute la description, les références à l'orientation des éléments sont données relativement à la figure 1. Il est clair que le retournement de la boîte à eau des figures 1 et 2 placerait un élément qualifié d'inférieur dans une position qualifiée de supérieure.Throughout the description, the references to the orientation of the elements are given relative to FIG. 1. It is clear that the reversal of the water box of FIGS. 1 and 2 would place an element qualified as inferior in a position qualified as superior.

La plaque collectrice 2 comprend une partie centrale 9 munie d'ouvertures 10 autorisant le passage d'extrémités de tubes 11 (voir figure 2), et sur toute la périphérie de cette partie centrale, un bord périphérique 12 conformé, par pliage, avant assemblage de l'échangeur.The collector plate 2 comprises a central part 9 provided with openings 10 allowing the passage of tube ends 11 (see FIG. 2), and over the entire periphery of this central part, a peripheral edge 12 shaped, by folding, before assembly of the exchanger.

Les tubes 3 forment un faisceau de tubes et sont généralement réalisés en aluminium, ou dans un alliage assez ductile comprenant de l'aluminium. La plaque collectrice est réalisée de préférence dans un alliage d'aluminium et de manganèse appartenant a la série dite "3000".The tubes 3 form a bundle of tubes and are generally made of aluminum, or of a fairly ductile alloy comprising aluminum. The collector plate is preferably made of an aluminum and manganese alloy belonging to the so-called "3000" series.

Le bord périphérique 12 délimite une face interne 13, un fond 14 et une face externe 15 d'une gorge périphérique 16 de forme générale en U agencée pour loger le talon périphérique 4 avec interposition d'un joint d'étanchéité 17 réalisé dans un matériau déformable et étanche à l'eau, par exemple en élastomère.The peripheral edge 12 delimits an internal face 13, a bottom 14 and an external face 15 of a peripheral groove 16 of generally U-shaped arranged to accommodate the peripheral heel 4 with the interposition of a seal 17 made of a material deformable and waterproof, for example made of elastomer.

La face externe 15 du bord périphérique présente en une partie terminale une modulation de longueur en créneau formant pattes de sertissage 19. Préférentiellement, les pattes de sertissage sont espacées régulièrement les unes des autres d'une distance (longitudinale) D, chaque patte présentant par ailleurs une extension longitudinale L1.The external face 15 of the peripheral edge has in a terminal part a length modulation in a crenel forming crimping lugs 19. Preferably, the crimping lugs are regularly spaced from each other by a (longitudinal) distance D, each lug having by elsewhere a longitudinal extension L1.

Ces pattes de sertissage, qui sont prédécoupées, sont destinées à s'appuyer sur la face supérieure d'appui 5 du talon périphérique 4 pour l'immobiliser relativement à la plaque collectrice 2 avec interposition du joint d'étanchéité 17. Ce dernier se trouve ainsi disposé dans la gorge périphérique 16 entre la face externe 15 et le fond 14 du bord périphérique 12, et la face inférieure 8 du talon périphérique 4.These crimping tabs, which are precut, are intended to bear on the upper support face 5 of the peripheral heel 4 to immobilize it relative to the collector plate 2 with interposition of the gasket 17. The latter is located thus disposed in the peripheral groove 16 between the external face 15 and the bottom 14 of the peripheral edge 12, and the lower face 8 of the peripheral heel 4.

Bien entendu, ce joint peut prendre d'autres formes et par conséquent, il peut être en contact avec d'autres faces.Of course, this seal can take other forms and therefore it can be in contact with other faces.

Le talon périphérique 4 de la boîte à eau, qui est préférentiellement réalisée par moulage d'une matière plastique renforcée, présente au niveau de sa face supérieure 5 une modulation d'épaisseur formant une alternance de zone épaisse 19 et de zone mince 20.The peripheral heel 4 of the water box, which is preferably produced by molding a reinforced plastic material, has at its upper face 5 a thickness modulation forming an alternation of thick zone 19 and thin zone 20.

On entend par zone épaisse, une zone du talon périphérique qui présente une épaisseur identique ou légèrement inférieure à celle que présentent les talons périphériques des boîtes à eau de la technique antérieure. Par conséquent, les zones dites minces sont celles qui présentent une épaisseur notablement inférieure à celle des zones épaisses.The term “thick zone” is understood to mean an area of the peripheral heel which has a thickness identical to or slightly less than that of the peripheral heels of water boxes of the prior art. Consequently, the so-called thin zones are those which have a thickness considerably less than that of the thick zones.

La Demanderesse s'est aperçue que de façon surprenante un talon présentant une telle modulation d'épaisseur possédait des caractéristiques mécaniques sensiblement identiques à celles des talons de la technique antérieure, et en tout cas largement suffisantes pour supporter les différentes contraintes en fonctionnement et lors de l'assemblage.The Applicant has noticed that, surprisingly, a heel having such a thickness modulation had mechanical characteristics substantially identical to those of the heels of the prior art, and in any case largely sufficient to withstand the various stresses in operation and during assembly.

Ainsi, la gorge périphérique 16 délimitée par le bord périphérique 12 est notablement moins profonde que dans les échangeurs connus, ce qui réduit d'autant la longueur du bras de levier des pattes de sertissage 18. En conséquence, les contraintes exercées sur les pattes de sertissage de l'échangeur proposé sont beaucoup moins importantes que celles qu'elles subiraient dans un échangeur de la technique antérieure.Thus, the peripheral groove 16 delimited by the peripheral edge 12 is notably less deep than in known exchangers, which reduces the length of the lever arm of the crimping lugs 18 accordingly. Consequently, the stresses exerted on the lugs of crimping of the proposed exchanger are much less important than that which they would undergo in a prior art exchanger.

Par ailleurs, lorsque la boite à eau est réalisée par moulage, la quantité de matière nécessaire pour la réaliser est sensiblement moins importante qu'auparavant, ce qui réduit le coût de fabrication et contribue à l'allégement de l'échangeur.Furthermore, when the water box is made by molding, the amount of material required to make it is significantly less than before, which reduces the manufacturing cost and contributes to reducing the heat exchanger.

Enfin, la présence de zones épaisses 19 sur la face supérieure d'appui 5 du talon périphérique permet de favoriser l'écoulement de matière lors du moulage.Finally, the presence of thick zones 19 on the upper support face 5 of the peripheral heel makes it possible to promote the flow of material during molding.

De préférence, la distance qui sépare deux zones épaisses 19 voisines (ou l'extension longitudinale d'une zone mince 20) est égale, par valeur inférieure, à l'extension longitudinale L1 d'une patte de sertissage 18, et l'extension longitudinale L2 d'une zone épaisse 19 (ou la distance séparant deux zones minces 20) est égale, par valeur supérieure, à la distance D entre deux pattes de sertissage 18 voisines.Preferably, the distance which separates two neighboring thick zones 19 (or the longitudinal extension of a thin zone 20) is equal, by lower value, to the longitudinal extension L1 of a crimping lug 18, and the extension longitudinal L2 of a thick zone 19 (or the distance separating two thin zones 20) is equal, by greater value, to the distance D between two adjacent crimping lugs 18.

Par ailleurs, le positionnement respectif des zones et des pattes de sertissage est prévu de sorte qu'après repliement chaque patte de sertissage s'insère entre deux zones épaisses 19 voisines et s'appuie sur la zone mince 20 en regard de laquelle elle se trouve.Furthermore, the respective positioning of the crimping zones and tabs is provided so that after folding each crimping tab is inserted between two neighboring thick zones 19 and rests on the thin zone 20 opposite which it is located. .

Le repliement des pattes est effectué après solidarisation des pièces métalliques (plaque collectrice 2 et tubes 11) par brasage dans un four, par exemple, puis positionnement des joints d'étanchéité 17 et du talon périphérique 4 de la boîte à eau dans la gorge périphérique 16. Il s'effectue vers l'intérieur, suivant un axe X-X sensiblement parallèle à un côté longitudinal de l'échangeur, jusqu'à ce que les pattes de sertissage 18 pressent la face supérieure 5 du talon périphérique 4 de chaque boîte à eau 1 contre le bord périphérique 12 de la plaque collectrice 2, comprimant ainsi les joints d'étanchéité 17, tout en immobilisant ledit talon périphérique 4 à l'intérieur de la gorge périphérique 16.The legs are folded back after the metal parts have been joined (collector plate 2 and tubes 11) by brazing in an oven, for example, then positioning of the seals 17 and the peripheral heel 4 of the water box in the peripheral groove 16. It takes place inwards, along an axis XX substantially parallel to a longitudinal side of the exchanger, until the crimping lugs 18 press the upper face 5 of the peripheral heel 4 of each water box. 1 against the peripheral edge 12 of the collector plate 2, thus compressing the seals 17, while immobilizing said peripheral heel 4 inside the peripheral groove 16.

L'intensité de la compression peut être ajustée en déplaçant la position de l'axe de repliement X-X.The intensity of the compression can be adjusted by moving the position of the X-X folding axis.

Afin d'obtenir une bonne répartition de la pression sur l'ensemble des joints, il est préférable de prévoir une répartition des pattes de sertissage sur toute la longueur des côtés longitudinaux de l'échangeur. Bien entendu, lorsque l'on prévoit de fortes pressions dans l'échangeur, il peut être également utile de réaliser des pattes de sertissage sur les côtés transversaux.In order to obtain a good distribution of the pressure over all of the seals, it is preferable to provide for a distribution of the crimping lugs over the entire length of the longitudinal sides of the exchanger. Of course, when high pressures are expected in the exchanger, it may also be useful to make crimping lugs on the transverse sides.

L'invention ne se limite pas aux deux modes de réalisation décrits ci-avant, mais en embrasse toutes les variantes que pourra développer l'homme de l'art dans le cadre des revendications ci-après.The invention is not limited to the two embodiments described above, but embraces all the variants which a person skilled in the art may develop within the scope of the claims below.

Ainsi, on peut envisager de prévoir moins de zones épaisses qu'il n'y a d'espaces vides entre pattes de sertissage. Pour cela il suffit que la distance entre deux zones épaisses voisines soit au moins égale, par valeur supérieure, à la somme de l'extension longitudinale L1 d'une patte de sertissage et d'un multiple de l'extension longitudinale L1 d'une patte de sertissage et de l'espace séparant deux pattes de sertissage voisines D.Thus, it can be envisaged to provide fewer thick zones than there are empty spaces between crimping lugs. For this it suffices that the distance between two neighboring thick zones is at least equal, by greater value, to the sum of the longitudinal extension L1 of a crimping lug and of a multiple of the longitudinal extension L1 of a crimping tab and the space separating two neighboring crimping tabs D.

Ou bien on peut prévoir des pattes de sertissage présentant une extension longitudinale différente (supérieure ou inférieure) de celle des zones minces.Or it can be provided with crimping lugs having a different longitudinal extension (upper or lower) than that of the thin zones.

Par ailleurs, on a décrit une modulation d'épaisseur obtenue directement lors de l'étape de moulage de la boîte à eau, mais il est clair qu'elle peut être également obtenue par découpe.Furthermore, a thickness modulation has been described obtained directly during the step of molding the water box, but it is clear that it can also be obtained by cutting.

Claims (6)

Echangeur de chaleur, notamment pour véhicule automobile, du type comprenant une boîte à fluide (1) munie d'un talon périphérique (4), ainsi qu'une plaque collectrice (2) présentant un bord périphérique (12) délimitant une gorge périphérique (16) de forme générale en U, destinée à recevoir au moins partiellement le talon périphérique (5) avec interposition d'un joint d'étanchéité (17), et présentant en une partie terminale une modulation de longueur en créneau formant pattes de sertissage (18) destinées à s'appuyer sur une face supérieure (5) du talon périphérique (4) pour l'immobiliser relativement à la plaque collectrice (2), caractérisé en ce que ledit talon périphérique (4) présente au niveau de sa face supérieure (5) une modulation d'épaisseur formant une alternance de zones épaisses (19) et de zones minces (20), chaque zone épaisse (19) étant agencée pour s'insérer entre deux pattes de sertissage (18) voisines après repliement de celles-ci, de sorte que les pattes de sertissage (18) s'appuient sur les zones minces (20) de la face supérieure (5) en regard desquelles elles se trouvent.Heat exchanger, in particular for a motor vehicle, of the type comprising a fluid box (1) provided with a peripheral heel (4), as well as a collecting plate (2) having a peripheral edge (12) delimiting a peripheral groove ( 16) generally U-shaped, intended to receive at least partially the peripheral heel (5) with the interposition of a seal (17), and having in a terminal part a length modulation in a crenel forming crimp tabs ( 18) intended to bear on an upper face (5) of the peripheral heel (4) to immobilize it relative to the collecting plate (2), characterized in that said peripheral heel (4) has at its upper face (5) a thickness modulation forming an alternation of thick zones (19) and thin zones (20), each thick zone (19) being arranged to be inserted between two adjacent crimping tabs (18) after folding of those -this , so that the crimping lugs (18) are supported on the thin zones (20) of the upper face (5) opposite which they are located. Echangeur de chaleur selon la revendication 1, caractérisé en ce que la distance entre deux zones épaisses voisines étant au moins égale, par valeur supérieure, à la somme de l'extension longitudinale (L1) d'une patte de sertissage et d'un multiple, positif ou nul, de l'extension longitudinale (L1) d'une patte de sertissage et de l'espace séparant deux pattes de sertissage voisines (D).Heat exchanger according to claim 1, characterized in that the distance between two neighboring thick zones being at least equal, by greater value, to the sum of the longitudinal extension (L1) of a crimping lug and a multiple , positive or zero, of the longitudinal extension (L1) of a crimping lug and the space separating two neighboring crimping lugs (D). Echangeur de chaleur selon la revendication 2, caractérisé en ce que la distance entre deux zones épaisses (19) voisines est égale, par valeur supérieure, à l'extension longitudinale (L1) d'une patte de sertissage (18).Heat exchanger according to claim 2, characterized in that the distance between two neighboring thick zones (19) is equal, by greater value, to the longitudinal extension (L1) of a crimping lug (18). Echangeur de chaleur selon la revendication 3, caractérisé en ce que l'extension longitudinale (L2) d'une zone épaisse (19) est égale, par valeur inférieure, à l'extension longitudinale (L1) d'une patte de sertissage (18).Heat exchanger according to claim 3, characterized in that the longitudinal extension (L2) of a thick zone (19) is equal, by lower value, to the longitudinal extension (L1) of a crimping lug (18 ). Echangeur de chaleur selon l'une des revendications 1 à 4, caractérisé en ce que les pattes de sertissage (18) s'étendent sur les côtés longitudinaux dudit échangeur.Heat exchanger according to one of claims 1 to 4, characterized in that the crimping lugs (18) extend on the longitudinal sides of said exchanger. Echangeur de chaleur selon l'une des revendications 1 à 5, caractérisé en ce que la boite à eau (1) est réalisée par moulage.Heat exchanger according to one of claims 1 to 5, characterized in that the water box (1) is produced by molding.
EP19960119459 1995-12-13 1996-12-04 Heat exchanger, more in particularly for automotive vehicle Expired - Lifetime EP0779488B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9514782 1995-12-13
FR9514782A FR2742529B1 (en) 1995-12-13 1995-12-13 HEAT EXCHANGER WITH A SET COLLECTOR PLATE, PARTICULARLY FOR A MOTOR VEHICLE

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EP0779488A1 true EP0779488A1 (en) 1997-06-18
EP0779488B1 EP0779488B1 (en) 2003-09-17

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EP (1) EP0779488B1 (en)
CN (1) CN1157227A (en)
AR (1) AR005012A1 (en)
BR (1) BR9605753A (en)
DE (1) DE69630003T2 (en)
FR (1) FR2742529B1 (en)

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WO2000033009A1 (en) * 1998-11-30 2000-06-08 Valeo Thermique Moteur Method for assembling a heat exchanger
DE102011008220A1 (en) 2010-01-13 2012-01-19 Denso Corporation heat exchangers
EP2455697A1 (en) * 2010-11-19 2012-05-23 Valeo Systemes Thermiques Manifold block and corresponding heat exchanger
JP2012145237A (en) * 2011-01-06 2012-08-02 Denso Corp Heat exchanger and method of manufacturing the same
FR3081544A1 (en) * 2018-05-28 2019-11-29 Valeo Systemes Thermiques COLLECTOR BOX FOR A HEAT EXCHANGER

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FR2871738B1 (en) * 2004-06-21 2008-08-29 Valeo Climatisation Sa LOCAL HOUSING TYPE "LABYRINTH", FOR A HEATING, VENTILATION AND / OR AIR CONDITIONING FACILITY
DE102005008409A1 (en) * 2005-02-24 2006-08-31 Modine Manufacturing Co., Racine Heat exchanger with pipes and ribs and manufacturing process
CN100460783C (en) * 2005-11-20 2009-02-11 陈苏红 Combined type collecting pipe for automobile air conditioner
DE102007040793A1 (en) * 2007-08-28 2009-03-05 Behr Gmbh & Co. Kg heat exchangers
DE102008056819B3 (en) * 2008-11-11 2010-04-29 F.W. Brökelmann Aluminiumwerk GmbH & Co. KG Aluminum alloy used as a material for heat transfer equipment contains alloying additions of silicon, iron, manganese, zinc, titanium and bismuth
DE102012209126A1 (en) 2012-05-30 2013-12-05 Behr Gmbh & Co. Kg Arrangement comprising a sealing element and a heat exchanger, in an air duct
CN102748469A (en) * 2012-07-05 2012-10-24 无锡金洋铝业有限公司 Inner-bore convexo-convex seal gasket
CN104180702A (en) * 2013-05-21 2014-12-03 重庆长安汽车股份有限公司 Edge baffle plate for eliminating thermal stress of automobile radiator and automobile radiator
US10215508B2 (en) * 2014-07-11 2019-02-26 Hanon Systems Header tank rib design for a heat exchanger
CN105806139A (en) * 2014-12-30 2016-07-27 泰安鼎鑫冷却器有限公司 Assembling mode of water chamber and mainboard
CN105135928A (en) * 2015-09-28 2015-12-09 湖北雷迪特冷却系统股份有限公司 Main sheet for radiator

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GB2138335A (en) * 1983-04-19 1984-10-24 Ford Motor Co An assembly of two parts
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Cited By (9)

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WO2000033009A1 (en) * 1998-11-30 2000-06-08 Valeo Thermique Moteur Method for assembling a heat exchanger
FR2789758A1 (en) * 1998-11-30 2000-08-18 Valeo Thermique Moteur Sa METHOD FOR ASSEMBLING A HEAT EXCHANGER, PARTICULARLY A MOTOR VEHICLE, AND EXCHANGER THUS OBTAINED
DE102011008220A1 (en) 2010-01-13 2012-01-19 Denso Corporation heat exchangers
EP2455697A1 (en) * 2010-11-19 2012-05-23 Valeo Systemes Thermiques Manifold block and corresponding heat exchanger
FR2967764A1 (en) * 2010-11-19 2012-05-25 Valeo Systemes Thermiques COLLECTOR BOX AND CORRESPONDING HEAT EXCHANGER
JP2012145237A (en) * 2011-01-06 2012-08-02 Denso Corp Heat exchanger and method of manufacturing the same
US9696099B2 (en) 2011-01-06 2017-07-04 Denso Corporation Heat exchanger with sealing member and protrusion between core plate and header
FR3081544A1 (en) * 2018-05-28 2019-11-29 Valeo Systemes Thermiques COLLECTOR BOX FOR A HEAT EXCHANGER
WO2019229356A1 (en) * 2018-05-28 2019-12-05 Valeo Systemes Thermiques Header tank for a heat exchanger

Also Published As

Publication number Publication date
CN1157227A (en) 1997-08-20
DE69630003D1 (en) 2003-10-23
MX9606343A (en) 1997-10-31
AR005012A1 (en) 1999-04-07
EP0779488B1 (en) 2003-09-17
FR2742529B1 (en) 1998-01-30
BR9605753A (en) 1998-08-25
DE69630003T2 (en) 2004-06-09
FR2742529A1 (en) 1997-06-20

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