EP1881289B1 - Heat exchanger with improved collector - Google Patents

Heat exchanger with improved collector Download PDF

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Publication number
EP1881289B1
EP1881289B1 EP07112333A EP07112333A EP1881289B1 EP 1881289 B1 EP1881289 B1 EP 1881289B1 EP 07112333 A EP07112333 A EP 07112333A EP 07112333 A EP07112333 A EP 07112333A EP 1881289 B1 EP1881289 B1 EP 1881289B1
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EP
European Patent Office
Prior art keywords
heat exchanger
holes
edge
exchanger according
core
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Not-in-force
Application number
EP07112333A
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German (de)
French (fr)
Other versions
EP1881289A1 (en
Inventor
Philippe Faille
Paul Garret
Yoann Naudin
Emmanuelle Girard
Thierry Camus
Gilles Pain
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Valeo Systemes Thermiques SAS
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Valeo Systemes Thermiques SAS
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Publication of EP1881289A1 publication Critical patent/EP1881289A1/en
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Publication of EP1881289B1 publication Critical patent/EP1881289B1/en
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
    • F28D1/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
    • F28D1/04—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits
    • F28D1/053—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being straight
    • F28D1/0535—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being straight the conduits having a non-circular cross-section
    • F28D1/05366—Assemblies of conduits connected to common headers, e.g. core type radiators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • 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
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2225/00—Reinforcing means
    • F28F2225/08—Reinforcing means for header boxes

Definitions

  • the invention relates to a heat exchanger, in particular for motor vehicles.
  • Heat exchangers generally include a collector connected to a bundle of tubes.
  • this collector may be formed by a collector plate covered with a lid.
  • the invention relates more particularly to an exchanger in which the collector plate has a core and an edge raised at its periphery.
  • the core is pierced with holes adapted to receive tubes of a beam, the holes being each surrounded by a collar having two pairs of opposite sides.
  • the raised edge of the header plate can form a groove for receiving a plastic cover crimped therein.
  • a heat exchanger can also receive a metal cover, for example aluminum, brazed to the peripheral edge of the collector plate.
  • the collector plates of these heat exchangers have collars which are generally formed by punching and lifting or puncturing the plate.
  • the tubes are inserted into these collars and the brazed assembly to form the heat exchanger.
  • the document DE 4,300,865 discloses a heat exchanger comprising a header plate having a core and an edge raised at its periphery, the core being pierced with holes for receiving tubes from a bundle, flanges being provided at said holes to surround said tubes, the raised edge presenting between adjacent holes recesses in the direction of the soul.
  • the invention proposes to improve heat exchangers of the above type.
  • a heat exchanger comprising a header plate having a core and an edge raised at its periphery, the core being pierced with holes for receiving tubes from a bundle, collars being provided at said holes to surround said tubes, each said collar having two pairs of opposite sides at least a first side of a collar being formed directly by the raised edge and at least a second side of said collar being derived from the core of the header plate. Between at least two adjacent holes, the raised edge has a recess towards the core, allowing said holes to conform to the contour of said tube.
  • This type of heat exchanger is extremely advantageous in that the recess in the direction of the core makes it possible to fill the discontinuity of material and allows a brazing which brings about a uniform distribution of the stresses.
  • the recess has a first portion at a second side of the collar surrounding one of said holes between which the recess is formed, and a second portion at a second side of the collar surrounding the other of said holes.
  • a recess can be used to tuck two successive collars.
  • the second side is brazed to the recess.
  • This type of heat exchanger is extremely interesting in that it offers improved mechanical strength. Indeed, the brazing of one side of the collar on the raised edge allows, once the exchanger has been soldered, to distribute the forces exerted on the tube not only on the collar but also on the whole of the collector plate , and in a uniformly distributed way.
  • the collars each include a pair of second opposite sides to each other from the core of the header plate.
  • the beam may then comprise a row of tubes, and each collar may comprise a pair of opposite first sides to one another, while the raised edge may comprise a recess between each pair of adjacent holes of the core. .
  • the second sides of the collar, coming from the core, can extend towards the inside of the collector or towards the outside of the collector, that is to say toward the bundle of tubes.
  • the raised edge of the header plate can form a clean groove for receiving a seal and a crimpable plastic cover.
  • the raised edge can also be adapted to receive a lid to which it can be brazed.
  • the cover may in particular comprise ribs of a size homologous to those of the recesses, and which are housed in them when the cover is received in the throat. Such an exchanger can thus be made even more resistant.
  • a collector plate 2 of a heat exchanger comprises a core 4 of generally rectangular shape, pierced with holes 6 of generally rectangular shape bordered by flanges 8.
  • the core 4 is metallic and formed for example of a metal alloy. aluminum.
  • the holes 6 have dimensions allowing them to receive the tubes of the heat exchanger bundle (shown in phantom on the Figures 3 and 4 ) of which plate 2 is part.
  • these tubes are flat and share with the holes 6 a large axis X-X and a small axis Y-Y.
  • flat tube is meant a generally oblong section tube, with two large parallel sides and two small sides connecting the respective ends of the long sides.
  • the collars 8 here comprise two pairs of opposite sides respectively 10 and 12. These pairs of sides extend along the X-X and Y-Y axes and correspond respectively to "long sides” and “short sides” of the rectangle formed by each hole.
  • a pair of sides 10 extends along the axis XX. It comprises two sides 10a and 10b formed by punching and lifting or tearing of the core 4.
  • the other pair 12 extends along the minor axis Y-Y. It comprises two sides 12a and 12b formed by a portion 14 of a raised edge 16 of the core 4. The raised edge 16 extends all along the periphery of the core 4.
  • the raised edge 16 has in each case a recess 18.
  • the recess 18 is made by stamping the raised edge 16.
  • the recess 18 has a rounded at its ends, so that it has two parts 18a and 18b which come into contact with successive holes 6.
  • the portion 18a of a recess abuts against the end of the side 10a of a collar 8
  • the portion 18b abuts against the end of the side 10b of the collar 8 following.
  • the raised edge 16 forms a groove 22, which receives a cover 24.
  • a peripheral seal 26 is stored between the cover 24 and the groove 22.
  • the cover 24 is here made of plastic, hence the need for the seal 26 to seal.
  • One end 28 of the raised edge 16 can be folded to crimp the lid 24.
  • the lid 24 is provided with substantially vertical ribs 30, each of which is housed in a recess 18.
  • the ribs 30 are of a size homologous to that of the recesses 18 with respect to the depth.
  • a rib 30 almost completely fills the space released by a recess 18.
  • the cover 24 is crimped in the groove 22 by the end 28, the manifold formed by this assembly is reinforced by the ribs 30.
  • the sides 10 extend towards the bundle of tubes, from the header plate 2. They could extend in the opposite direction, that is to say towards the cover 24.
  • the profile along the major axis of the holes of the header plate 2 is represented at various levels, with a tube 32 (shown in phantom) which penetrates a hole 6.
  • FIG. 3 there is shown a section showing the bottom 34 of the cover 24, as well as the side 10a of the pair 10 of the collar 8. This section is taken between two holes 6, in order to better present the recess 18.
  • the tube 32 penetrates a hole 6 of the collecting plate 2, and comes into contact with the pair of sides 10 on the one hand, the pair of sides 12 on the other and a portion 18a of a recess 18. Behind, we see the part 18b of the recess 18.
  • the cover 24 is in its thickest part, that is to say at a rib 30.
  • a free space 36 remains between the bottom of the groove 22 which is not filled by the seal 26 and the bottom of the rib 30 which is supported on the seal 26.
  • the seal is not threatened as the seal 26 fills the groove 22 at the holes 6.
  • the sides 10 are brazed to the recesses 18.
  • the tube 32 is brazed to the collar 8 they form a unitary assembly with the raised edge 16, which improves the mechanical strength of the exchanger thus formed.
  • the side of the collar 8 along the small Y-Y axis being formed by the portion 14 of the raised edge 16 of the core 4, a significant gain of space is achieved.
  • the figure 4 shows a similar view to the figure 3 , but along the axis IV-IV, which is located in front of a hole 6. This view makes it possible to appreciate more concretely the brazing of the tube within the exchanger.
  • the invention finds a preferential application to heat exchangers for motor vehicles, for example to charge air coolers. It can however be applied to other heat exchangers, for example engine cooling radiators.

Abstract

The heat exchanger has a collecting plate (2) with a core (4) and a raised edge (16) at its periphery. The core is pierced with holes (6) to receive tubes of beams. Flanges are provided at a level of the holes to surround the tubes, where each flange presents a side (12a) formed directly by the edge and another side formed from the core. The edge presents a reinforcement (18) between two adjacent holes in the direction of the core to permit the holes to adopt the circumference of the tubes.

Description

L'invention concerne un échangeur de chaleur, en particulier pour des véhicules automobiles.The invention relates to a heat exchanger, in particular for motor vehicles.

Les échangeurs de chaleur comportent généralement un collecteur relié à un faisceau de tubes. Classiquement, ce collecteur peut-être formé par une plaque collectrice recouverte d'un couvercle.Heat exchangers generally include a collector connected to a bundle of tubes. Conventionally, this collector may be formed by a collector plate covered with a lid.

L'invention concerne plus particulièrement un échangeur dans lequel la plaque collectrice a une âme et un bord relevé à sa périphérie. L'âme est percée de trous propres à recevoir des tubes d'un faisceau, les trous étant entourés chacun d'un collet présentant deux paires de côtés opposés.The invention relates more particularly to an exchanger in which the collector plate has a core and an edge raised at its periphery. The core is pierced with holes adapted to receive tubes of a beam, the holes being each surrounded by a collar having two pairs of opposite sides.

De tels échangeurs de chaleur sont réalisés de manières diverses. Ainsi, le bord relevé de la plaque collectrice peut former une gorge pour recevoir un couvercle en matière plastique serti dans celle-ci. Un tel échangeur de chaleur peut également recevoir un couvercle en métal, par exemple en aluminium, brasé sur le bord périphérique de la plaque collectrice.Such heat exchangers are made in various ways. Thus, the raised edge of the header plate can form a groove for receiving a plastic cover crimped therein. Such a heat exchanger can also receive a metal cover, for example aluminum, brazed to the peripheral edge of the collector plate.

D'une manière classique, les plaques collectrices de ces échangeurs de chaleur présentent des collets qui sont en général formés par poinçonnage et relevage ou crevage de la plaque. Les tubes sont insérés dans ces collets et l'ensemble brasé pour former l'échangeur de chaleur.In a conventional manner, the collector plates of these heat exchangers have collars which are generally formed by punching and lifting or puncturing the plate. The tubes are inserted into these collars and the brazed assembly to form the heat exchanger.

Dans ces échangeurs de chaleur, if subsiste une discontinuité de matière entre le tube, le bord de collet réalisé par la plaque collectrice et le bord de collet réalisé directement par le bord relevé. Cette discontinuité peut amener un déséquilibre lors du brasage, et entraîner une répartition inéquitable des contraintes lorsque l'échangeur est sollicité, notamment au niveau de la section transversale des tubes (dans le cas de tubes non circulaires).In these heat exchangers, there is a discontinuity of material between the tube, the collar edge made by the collector plate and the collar edge made directly by the raised edge. This discontinuity can lead to an imbalance during brazing, and lead to an inequitable distribution of stresses when the exchanger is stressed, particularly at the cross section of the tubes (in the case of non-circular tubes).

Le document DE 4 300 865 décrit un échangeur de chaleur comprenant une plaque collectrice ayant une âme et un bord relevé à sa périphérie, l'âme étant percée de trous pour recevoir des tubes d'un faisceau, des collets étant prévus au niveau desdits trous pour entourer lesdits tubes, le bord relevé présentant entre des trous adjacents des renfoncements en direction de l'âme.The document DE 4,300,865 discloses a heat exchanger comprising a header plate having a core and an edge raised at its periphery, the core being pierced with holes for receiving tubes from a bundle, flanges being provided at said holes to surround said tubes, the raised edge presenting between adjacent holes recesses in the direction of the soul.

L'invention se propose d'améliorer des échangeurs de chaleur du type ci-dessus.The invention proposes to improve heat exchangers of the above type.

A cet effet, il est proposé un échangeur de chaleur comportant une plaque collectrice ayant une âme et un bord relevé à sa périphérie, l'âme étant percée de trous pour recevoir des tubes d'un faisceau, des collets étant prévus au niveau desdits trous pour entourer lesdits tubes, chaque dit collet présentant deux paires de côtés opposés au moins un premier côté d'un collet étant formé directement par le bord relevé et au moins un second côté dudit collet étant issu de l'âme de la plaque collectrice. Entre au moins deux trous adjacents, le bord relevé présente un renfoncement en direction de l'âme, permettant audits trous d'épouser le contour dudit tube.For this purpose, there is provided a heat exchanger comprising a header plate having a core and an edge raised at its periphery, the core being pierced with holes for receiving tubes from a bundle, collars being provided at said holes to surround said tubes, each said collar having two pairs of opposite sides at least a first side of a collar being formed directly by the raised edge and at least a second side of said collar being derived from the core of the header plate. Between at least two adjacent holes, the raised edge has a recess towards the core, allowing said holes to conform to the contour of said tube.

Ce type d'échangeur de chaleur est extrêmement avantageux en ce que le renfoncement en direction de l'âme permet de combler la discontinuité de matière et permet un brasage qui amène une répartition uniforme des contraintes.This type of heat exchanger is extremely advantageous in that the recess in the direction of the core makes it possible to fill the discontinuity of material and allows a brazing which brings about a uniform distribution of the stresses.

Avantageusement, le renfoncement présente une première partie au niveau d'un second côté du collet entourant l'un desdits trous entre lesquels le renfoncement est formé, et une deuxième partie au niveau d'un second côté du collet entourant l'autre desdits trous. Ainsi, un renfoncement peut être utilisé pour border deux collets successifs.Advantageously, the recess has a first portion at a second side of the collar surrounding one of said holes between which the recess is formed, and a second portion at a second side of the collar surrounding the other of said holes. Thus, a recess can be used to tuck two successive collars.

Avantageusement, une fois l'échangeur assemblé, le second côté est brasé au renfoncement. Ce type d'échangeur de chaleur est extrêmement intéressant en ce qu'il offre une tenue mécanique améliorée. En effet, le brasage d'un côté du collet sur le bord relevé permet, une fois que l'échangeur a été brasé, de répartir les efforts exercés sur le tube non seulement sur le collet mais aussi sur l'ensemble de la plaque collectrice, et de manière uniformément répartie.Advantageously, once the exchanger assembled, the second side is brazed to the recess. This type of heat exchanger is extremely interesting in that it offers improved mechanical strength. Indeed, the brazing of one side of the collar on the raised edge allows, once the exchanger has been soldered, to distribute the forces exerted on the tube not only on the collar but also on the whole of the collector plate , and in a uniformly distributed way.

Dans un mode de réalisation, les collets comportent chacun une paire de seconds côtés opposés l'un à l'autre, issus de l'âme de la plaque collectrice. Avantageusement, le faisceau peut alors comporter une rangée de tubes, et chaque collet peut comporter une paire de premiers côtés opposés l'un à l'autre, alors que le bord relevé peut comporter un renfoncement entre chaque paire de trous adjacents de l'âme.In one embodiment, the collars each include a pair of second opposite sides to each other from the core of the header plate. Advantageously, the beam may then comprise a row of tubes, and each collar may comprise a pair of opposite first sides to one another, while the raised edge may comprise a recess between each pair of adjacent holes of the core. .

Les seconds côtés du collet, issus de l'âme, peuvent s'étendre vers l'intérieur du collecteur ou vers l'extérieur du collecteur, c'est-à-dire vers le faisceau de tubes.The second sides of the collar, coming from the core, can extend towards the inside of the collector or towards the outside of the collector, that is to say toward the bundle of tubes.

Le bord relevé de la plaque collectrice peut former une gorge propre à recevoir un joint d'étanchéité ainsi qu'un couvercle en plastique sertissable. Le bord relevé peut également être propre à recevoir un couvercle auquel il peut être brasé. Dans ce mode de réalisation, le couvercle peut notamment comporter des nervures de taille homologue de celles des renfoncements, et qui sont logées dans ceux-ci lorsque le couvercle est reçu dans la gorge. Un tel échangeur peut être ainsi rendu encore plus résistant.The raised edge of the header plate can form a clean groove for receiving a seal and a crimpable plastic cover. The raised edge can also be adapted to receive a lid to which it can be brazed. In this embodiment, the cover may in particular comprise ribs of a size homologous to those of the recesses, and which are housed in them when the cover is received in the throat. Such an exchanger can thus be made even more resistant.

D'autres avantages et caractéristiques de l'invention apparaîtront mieux à la lecture de la description qui suit d'exemples donnés à titre illustratif et non limitatif issus des dessins sur lesquels :

  • la figure 1 représente une vue en perspective de dessus d'une plaque collectrice d'un échangeur de chaleur selon l'invention, recevant un couvercle partiellement arraché ;
  • la figure 2 représente une vue partielle en perspective de dessous de la figure 1,
  • la figure 3 représente une vue en coupe selon l'axe III-III de la figure 2 ; et
  • la figure 4 représente une vue en coupe selon l'axe IV-IV de la figure 2.
Other advantages and features of the invention will appear better on reading the following description of examples given for illustrative and non-limiting purposes from the drawings in which:
  • the figure 1 is a perspective view from above of a header plate of a heat exchanger according to the invention, receiving a partially torn cover;
  • the figure 2 represents a partial perspective view from below of the figure 1 ,
  • the figure 3 represents a sectional view along the axis III-III of the figure 2 ; and
  • the figure 4 represents a sectional view along the axis IV-IV of the figure 2 .

Comme représenté sur la figure 1, une plaque collectrice 2 d'un échangeur de chaleur comporte une âme 4 de forme générale rectangulaire, percée de trous 6 de forme générale rectangulaire bordés par des collets 8. L'âme 4 est métallique et formée par exemple d'un alliage d'aluminium.As shown on the figure 1 , a collector plate 2 of a heat exchanger comprises a core 4 of generally rectangular shape, pierced with holes 6 of generally rectangular shape bordered by flanges 8. The core 4 is metallic and formed for example of a metal alloy. aluminum.

Les trous 6 ont des dimensions leur permettant de recevoir les tubes du faisceau de l'échangeur de chaleur (représentés en traits mixtes sur les figures 3 et 4) dont fait partie la plaque 2.The holes 6 have dimensions allowing them to receive the tubes of the heat exchanger bundle (shown in phantom on the Figures 3 and 4 ) of which plate 2 is part.

Dans l'exemple ici décrit, ces tubes sont plats et partagent avec les trous 6 un grand axe X-X et un petit axe Y-Y. Par tube plat, on entend un tube de section de forme générale oblongue, avec deux grands côtés parallèles et deux petits côtés reliant les extrémités respectives des grands côtés. Ces tubes pourraient néanmoins être de nature différente selon l'application recherchée.In the example described here, these tubes are flat and share with the holes 6 a large axis X-X and a small axis Y-Y. By flat tube is meant a generally oblong section tube, with two large parallel sides and two small sides connecting the respective ends of the long sides. These tubes could nevertheless be different in nature depending on the application sought.

Les collets 8 comportent ici deux paires de côtés opposés respectivement 10 et 12. Ces paires de côtés s'étendent selon les axes X-X et Y-Y et correspondent respectivement à des "grands côtés" et des "petits côtés" du rectangle que forme chaque trou.The collars 8 here comprise two pairs of opposite sides respectively 10 and 12. These pairs of sides extend along the X-X and Y-Y axes and correspond respectively to "long sides" and "short sides" of the rectangle formed by each hole.

Plus précisément, une paire de côtés 10 s'étend selon l'axe X-X. Elle comporte deux côtés 10a et 10b formés par poinçonnage et relevage ou crevage de l'âme 4.More specifically, a pair of sides 10 extends along the axis XX. It comprises two sides 10a and 10b formed by punching and lifting or tearing of the core 4.

L'autre paire 12 s'étend selon le petit axe Y-Y. Elle comporte deux côtés 12a et 12b formés par une portion 14 d'un bord relevé 16 de l'âme 4. Le bord relevé 16 s'étend tout le long de la périphérie de l'âme 4.The other pair 12 extends along the minor axis Y-Y. It comprises two sides 12a and 12b formed by a portion 14 of a raised edge 16 of the core 4. The raised edge 16 extends all along the periphery of the core 4.

Entre deux trous 6 adjacents, le bord relevé 16 présente à chaque fois un renfoncement 18. Dans l'exemple décrit ici, le renfoncement 18 est réalisé par emboutissage du bord relevé 16.Between two adjacent holes 6, the raised edge 16 has in each case a recess 18. In the example described here, the recess 18 is made by stamping the raised edge 16.

Le renfoncement 18 présente un arrondi à ses extrémités, de sorte qu'il présente deux parties 18a et 18b qui viennent au contact de trous 6 successifs.The recess 18 has a rounded at its ends, so that it has two parts 18a and 18b which come into contact with successive holes 6.

En effet, comme on le voit mieux sur la figure 2, la partie 18a d'un renfoncement vient en appui contre l'extrémité du côté 10a d'un collet 8, et la partie 18b vient en appui contre l'extrémité du côté 10b du collet 8 suivant.Indeed, as we see better on the figure 2 , the portion 18a of a recess abuts against the end of the side 10a of a collar 8, and the portion 18b abuts against the end of the side 10b of the collar 8 following.

Comme il apparaît sur la figure 1, le bord relevé 16 forme une gorge 22, qui reçoit un couvercle 24. Un joint périphérique 26 est entreposé entre le couvercle 24 et la gorge 22.As it appears on the figure 1 the raised edge 16 forms a groove 22, which receives a cover 24. A peripheral seal 26 is stored between the cover 24 and the groove 22.

Le couvercle 24 est ici réalisé en matière plastique, d'où la nécessité du joint 26 afin d'assurer l'étanchéité. Une extrémité 28 du bord relevé 16 peut être rabattue afin de sertir le couvercle 24.The cover 24 is here made of plastic, hence the need for the seal 26 to seal. One end 28 of the raised edge 16 can be folded to crimp the lid 24.

Le couvercle 24 est muni de nervures 30 sensiblement verticales, qui viennent chacune se loger dans un renfoncement 18. Les nervures 30 sont de taille homologue de celle des renfoncements 18 en ce qui concerne la profondeur.The lid 24 is provided with substantially vertical ribs 30, each of which is housed in a recess 18. The ribs 30 are of a size homologous to that of the recesses 18 with respect to the depth.

Comme il apparaît sur les figures, une nervure 30 remplit presque totalement l'espace libéré par un renfoncement 18. Ainsi, lorsque le couvercle 24 est serti dans la gorge 22 par l'extrémité 28, la boîte collectrice formée par cet ensemble est renforcée par les nervures 30.As it appears in the figures, a rib 30 almost completely fills the space released by a recess 18. Thus, when the cover 24 is crimped in the groove 22 by the end 28, the manifold formed by this assembly is reinforced by the ribs 30.

Comme on peut le voir sur les figures 1 et 2, les côtés 10 s'étendent vers le faisceau de tubes, depuis la plaque collectrice 2. Ils pourraient s'étendre dans le sens inverse, c'est-à-dire vers le couvercle 24.As can be seen on the Figures 1 and 2 , the sides 10 extend towards the bundle of tubes, from the header plate 2. They could extend in the opposite direction, that is to say towards the cover 24.

Le collet 8 apparaîtra plus clairement à la vue des figures 3 et 4 qui représentent des coupes partielles selon des axes III-III et IV-IV de la figure 2.The collar 8 will appear more clearly in view of Figures 3 and 4 which represent partial sections along axes III-III and IV-IV of the figure 2 .

Sur les figures 3 et 4, le profil selon le grand axe des trous de la plaque collectrice 2 est représenté à divers niveaux, avec un tube 32 (représenté en traits mixtes) qui pénètre un trou 6.On the Figures 3 and 4 , the profile along the major axis of the holes of the header plate 2 is represented at various levels, with a tube 32 (shown in phantom) which penetrates a hole 6.

Sur la figure 3, on a représenté une coupe montrant le fond 34 du couvercle 24, ainsi que le côté 10a de la paire 10 du collet 8. Cette coupe est prise entre deux trous 6, afin de mieux présenter le renfoncement 18.On the figure 3 , there is shown a section showing the bottom 34 of the cover 24, as well as the side 10a of the pair 10 of the collar 8. This section is taken between two holes 6, in order to better present the recess 18.

Le tube 32 pénètre un trou 6 de la plaque collectrice 2, et vient au contact de la paire de côtés 10 d'une part, de la paire de côtés 12 d'autre part et d'une partie 18a d'un renfoncement 18. Derrière, on aperçoit la partie 18b du renfoncement 18.The tube 32 penetrates a hole 6 of the collecting plate 2, and comes into contact with the pair of sides 10 on the one hand, the pair of sides 12 on the other and a portion 18a of a recess 18. Behind, we see the part 18b of the recess 18.

Sur cette figure, le couvercle 24 est dans sa partie la plus épaisse, c'est-à-dire au niveau d'une nervure 30. Un espace 36 libre subsiste entre le fond de la gorge 22 qui n'est pas rempli par le joint 26 et le bas de la nervure 30 qui est en appui sur le joint 26. Cependant, l'étanchéité n'est pas menacée comme le joint 26 remplit de manière étanche la gorge 22 au niveau des trous 6.In this figure, the cover 24 is in its thickest part, that is to say at a rib 30. A free space 36 remains between the bottom of the groove 22 which is not filled by the seal 26 and the bottom of the rib 30 which is supported on the seal 26. However, the seal is not threatened as the seal 26 fills the groove 22 at the holes 6.

Lorsque l'échangeur est brasé, les côtés 10 sont brasés aux renfoncements 18. Ainsi, lorsque le tube 32 est brasé au collet 8, ceux-ci forment un ensemble solidaire avec le bord relevé 16, ce qui améliore la tenue mécanique de l'échangeur ainsi formé. En outre, le côté du collet 8 selon le petit axe Y-Y étant formé par la portion 14 du bord relevé 16 de l'âme 4, un gain important de place est réalisé.When the exchanger is brazed, the sides 10 are brazed to the recesses 18. Thus, when the tube 32 is brazed to the collar 8, they form a unitary assembly with the raised edge 16, which improves the mechanical strength of the exchanger thus formed. In addition, the side of the collar 8 along the small Y-Y axis being formed by the portion 14 of the raised edge 16 of the core 4, a significant gain of space is achieved.

La figure 4 montre une vue analogue à la figure 3, mais selon l'axe IV-IV, qui se situe devant un trou 6. Cette vue permet d'apprécier plus concrètement le brasage du tube au sein de l'échangeur.The figure 4 shows a similar view to the figure 3 , but along the axis IV-IV, which is located in front of a hole 6. This view makes it possible to appreciate more concretely the brazing of the tube within the exchanger.

Ainsi, non seulement le tube 32 est brasé aux côtés 10, mais il est également brasé à la portion 14 et aux renfoncements 18 qui bordent le trou 6, en plus des côtés 10 qui sont également brasés aux renfoncements 18.Thus, not only is the tube 32 brazed at the sides 10, but it is also soldered to the portion 14 and the recesses 18 which line the hole 6, in addition to the sides 10 which are also brazed to the recesses 18.

En effet, la continuité de matière au niveau de la liaison âme-tube-bord relevé qui apparaît sur cette figure assure un brasage équilibré et une répartition favorables des contraintes mécaniques ultérieures subies par la boîte collectrice, notamment lors du refroidissement.In fact, the continuity of material at the level of the soul-tube-edge connection raised which appears in this figure ensures a balanced brazing and a favorable distribution of the subsequent mechanical stresses experienced by the manifold, especially during cooling.

Dans les exemples ici décrits, ce sont les petits côtés des collets qui sont généralement formés par le bord relevé de la plaque collectrice. On pourrait néanmoins imaginer des cas où les grands côtés seraient formés par le bord relevés, par exemple dans l'application de l'invention à des refroidisseurs de gaz, dans lesquels les tubes sont "torsadés". Il serait également envisageable de produire un couvercle muni d'une extension dans sa partie inférieure qui vienne prendre la place du joint 26 pour assurer l'étanchéité,In the examples described here, it is the short sides of the collars which are generally formed by the raised edge of the collector plate. One could nevertheless imagine cases where the long sides would be formed by the raised edge, for example in the application of the invention to gas coolers, in which the tubes are "twisted". It would also be conceivable to produce a cover provided with an extension in its lower part which takes the place of the seal 26 to seal,

L'invention trouve une application préférentielle aux échangeurs de chaleur pour véhicules automobiles, par exemple aux refroidisseurs d'air de suralimentation. Elle peut cependant être appliquée à d'autres échangeurs de chaleur, par exemple des radiateurs de refroidissement de moteur.The invention finds a preferential application to heat exchangers for motor vehicles, for example to charge air coolers. It can however be applied to other heat exchangers, for example engine cooling radiators.

L'étendue de l'invention n'est pas limitée par ses exemples et est à apprécier à l'aide des revendications qui suivent.The scope of the invention is not limited by its examples and is to be appreciated by means of the following claims.

Claims (11)

  1. Heat exchanger comprising a collector plate (2) that has a web (4) and a turned-up edge (16) at its periphery, the web being pierced with holes (6) to accept tubes (32) of a core, flanges (8) being provided at the said holes (6) to surround the said tubes (32), each said flange (8) having two pairs of opposite sides (10, 12), in which exchanger, between at least two adjacent holes (6), the turned-up edge (16) exhibits a depression (18) in the direction of the web (4), allowing the said holes to closely follow the contour of the said tube, characterized in that at least one first side (12a) of a flange (8) is formed directly by the turned-up edge (16) and at least one second side (10) of the said flange (8) stems from the web (4) of the collector plate (2).
  2. Exchanger according to Claim 1, characterized in that the depression (18) exhibits a first part (18a) in the region of a second side (10a) of the flange (8) surrounding one of the said holes (6) between which the depression (18) is formed, and a second part (18b) in the region of a second side (10b) of the flange (8) surrounding another of the said holes (6).
  3. Heat exchanger according to one of the preceding claims, characterized in that the flanges (8) each comprise a pair of second sides (10a, 10b), opposite one another, stemming from the web (4) of the collector plate (2).
  4. Heat exchanger according to one of the preceding claims, characterized in that the core comprises a row of tubes, and in that each flange (8) comprises a pair of mutually opposed first sides (12a, 12b).
  5. Heat exchanger according to one of the preceding claims, characterized in that the turned-up edge (16) comprises a depression (18) between each pair of adjacent holes (6) of the web (4).
  6. Heat exchanger according to one of the preceding claims, characterized in that the turned-up edge (16) is able to collaborate with a cover (24) of the collector plate (2) in order to form a collector box of the heat exchanger.
  7. Heat exchanger according to one of the preceding claims, characterized in that the turned-up edge (16) forms a groove (22) able to accept a cover (24) of the collector plate.
  8. Heat exchanger according to Claim 7, characterized in that the cover comprises ribs (30) of a size consistent with that of the depressions (18) and which are housed therein when the cover (24) is housed in the groove (22).
  9. Heat exchanger according to Claim 7 or 8, characterized in that the cover (24) is made of plastic and can be crimped into the groove (22) via one end (28) thereof.
  10. Heat exchanger according to one of Claims 7 to 9, characterized in that it comprises a seal (26) positioned between the bottom of the groove (22) and the cover (24).
  11. Heat exchanger according to one of the preceding claims, characterized in that the second sides of the flanges (10a, 10b) run along one side of the collector plate, between it and the core.
EP07112333A 2006-07-21 2007-07-12 Heat exchanger with improved collector Not-in-force EP1881289B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0606730A FR2904101B1 (en) 2006-07-21 2006-07-21 HEAT EXCHANGER WITH IMPROVED COLLECTOR

Publications (2)

Publication Number Publication Date
EP1881289A1 EP1881289A1 (en) 2008-01-23
EP1881289B1 true EP1881289B1 (en) 2009-11-18

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ID=37845124

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Application Number Title Priority Date Filing Date
EP07112333A Not-in-force EP1881289B1 (en) 2006-07-21 2007-07-12 Heat exchanger with improved collector

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EP (1) EP1881289B1 (en)
AT (1) ATE449302T1 (en)
DE (1) DE602007003267D1 (en)
FR (1) FR2904101B1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015064093A1 (en) 2013-10-30 2015-05-07 Denso Corporation Heat exchanger

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6394202B2 (en) 2013-11-27 2018-09-26 株式会社デンソー Heat exchanger

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2270471A1 (en) * 1974-05-10 1975-12-05 Chausson Usines Sa Seal between water reservoir and heat exchanger - has rubber ring deformed between reservoir and heat exchanger flanges
JP3196376B2 (en) * 1992-11-27 2001-08-06 株式会社デンソー Press working method
DE4330865A1 (en) * 1993-09-11 1995-03-16 Behr Gmbh & Co Heat exchanger, in particular radiator, for motor vehicles
FR2745079B1 (en) * 1996-02-20 1998-04-10 Valeo Thermique Moteur Sa BRAZED FLUID BOX HEAT EXCHANGER, ESPECIALLY FOR MOTOR VEHICLES
US6786275B2 (en) * 2002-05-23 2004-09-07 Valeo Engine Cooling Heat exchanger header assembly
FR2882428B1 (en) * 2005-02-21 2007-05-18 Valeo Systemes Thermiques HEAT EXCHANGER WITH IMPROVED COLLECTOR

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015064093A1 (en) 2013-10-30 2015-05-07 Denso Corporation Heat exchanger
US10598444B2 (en) 2013-10-30 2020-03-24 Denso Corporation Heat exchanger

Also Published As

Publication number Publication date
FR2904101A1 (en) 2008-01-25
EP1881289A1 (en) 2008-01-23
FR2904101B1 (en) 2008-09-05
ATE449302T1 (en) 2009-12-15
DE602007003267D1 (en) 2009-12-31

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