EP0684441A1 - Reinforced end plate for heat exchanger - Google Patents

Reinforced end plate for heat exchanger Download PDF

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Publication number
EP0684441A1
EP0684441A1 EP95107767A EP95107767A EP0684441A1 EP 0684441 A1 EP0684441 A1 EP 0684441A1 EP 95107767 A EP95107767 A EP 95107767A EP 95107767 A EP95107767 A EP 95107767A EP 0684441 A1 EP0684441 A1 EP 0684441A1
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EP
European Patent Office
Prior art keywords
region
plate
plane
collector plate
cylindrical shape
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.)
Granted
Application number
EP95107767A
Other languages
German (de)
French (fr)
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EP0684441B1 (en
Inventor
Jean-Louis Laveran
Daniel Hervel
Dany Bouquel
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Valeo Thermique Moteur SA
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Valeo Thermique Moteur SA
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Publication of EP0684441A1 publication Critical patent/EP0684441A1/en
Application granted granted Critical
Publication of EP0684441B1 publication Critical patent/EP0684441B1/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
    • F28F9/0219—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
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S165/00—Heat exchange
    • Y10S165/906—Reinforcement
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/4935—Heat exchanger or boiler making
    • Y10T29/49389—Header or manifold making

Definitions

  • the invention relates to a collector plate intended to delimit the interior volume of a fluid box of a heat exchanger, in particular of a motor vehicle cooling radiator, and having openings for the passage of fluid circulation tubes. formed in a substantially planar region of the plate which is connected to at least one curved region of generally cylindrical shape deviating from the plane of the planar region on the side of said interior volume.
  • collector plates are used in particular in radiators serving for cooling the charge air of motor vehicles, in which the charge air, which circulates in the fluid box and in the tubes, is at a high pressure and at a temperature which may exceed 100 ° C. This results in mechanical and thermal stresses for the collector plate which can, especially when it is made of aluminum alloy, cause cracking along the generatrix of the curved region, this the latter having already undergone fatigue during the bending operation which made it possible to obtain it.
  • the object of the invention is to remedy these drawbacks, and to provide a collecting plate which can withstand strong mechanical and thermal stresses without failure.
  • the invention relates in particular to a collecting plate of the kind defined in the introduction, and provides that said cylindrical shape is interrupted, without discontinuity of material, by a multiplicity of recessed zones distributed along its generatrix and each extending over its entire length. arc, the internal and external faces of the plate being offset inwards and its thickness increased, at the recessed areas, relative to the faces and to the thickness corresponding to the cylindrical shape.
  • the increase in thickness observed in the recessed areas can be explained by the need to compensate, at constant volume, the decrease in the size thereof in the direction of the arc length, due to the offset of the material towards the center of curvature. It is assumed that this localized increase in thickness prevents the propagation, along the generator, of stresses or deformations which could lead to rupture.
  • the invention also relates to a method of manufacturing a collector plate as defined above, in which one starts from a substantially flat plate and of substantially uniform thickness, the material of the plate is pushed back, perpendicular to its plane, in mutually spaced zones aligned in this plane, at least one region of the plate is bent to give it a generally cylindrical shape by moving it away from the initial plane of the plate in the direction in which the material has been repelled, the generatrix of said cylindrical shape being parallel to the direction of alignment of said zones and the latter extending over the entire arc length of the cylindrical shape, said openings being made, before, during or after the previous operations, in the region of the plate that remains in the initial plane.
  • the invention also relates to a heat exchanger, in particular a motor vehicle cooling radiator, comprising a fluid box whose internal volume is delimited by a collecting plate as defined above and communicates with fluid circulation tubes passing through said openings.
  • FIG. 1 represents a known manifold plate 1 intended to form part of a charge air cooling radiator of a motor vehicle.
  • This collector plate has the same general shape as the collector plate according to the invention which will be described in detail below in connection with FIGS. 2 to 6. It is produced from an elongated rectangle made of aluminum alloy sheet , and comprises a flat region 2 of elongated rectangular shape, connected on its two longitudinal sides respectively to raised edges 3, 4 both extending in front of the plane of the figure, by means of curved regions in a quarter of a circle .
  • the central flat region 2 is pierced with openings 5 aligned in the longitudinal direction of the plate, intended for the passage of tubes for the circulation of the air to be cooled, each of these openings having the general shape of an elongated rectangle perpendicular to the longitudinal direction of the plate.
  • the material of the plate is pushed back, in zones 8 distributed in the longitudinal direction of the plate, on the same side as the movement of the material for making of the curved regions, that is to the right of FIGS. 5 and 6.
  • the result of this pushing back, before the realization of the curved regions, is shown in the upper half of FIG. 6.
  • the zone 8 forms a groove 9 and a rib 10 elongated perpendicular to the longitudinal direction of the plate and arranged opposite one another in the internal face and in the external face, turned to the left and to the right of FIG. 6.
  • This groove and this rib extend over the entire width of the middle region 2 and of the region 7 'intended to form, after bending, the curved region 7.
  • the groove 9 and the rib 10 s' also extend, symmetrical in relation to the median longitudinal plane of the plate, over the entire width of the region intended to form the curved region 6, the latter being shown already produced in FIG. 6. In the finished collector plate, they extend without interruption from the marginal region 3 to the marginal region 4, stopping at a certain distance from the free edges of the latter.
  • the extension of the recessed areas 8, from one curved region to the other, over the entire width of the flat region 2, allows the collector plate to absorb large amounts of thermal expansion without permanent deformation, as described in FR-A -2 538 526. In applications where this function is not necessary, the recessed areas can be limited to the curved regions.
  • the profile of the collector plate has been drawn in FIG. 7 as seen in the plane of FIG. 5, in and in the vicinity of the curved region 6, in solid line for the collector plate according to the invention and in line interrupted for the known collector plate according to FIG. 1.
  • the final wall thickness is substantially uniform and equal to the thickness of the starting flat plate, for example 2.90 mm.
  • the thickness eo at mid-width of the recessed area 8, in the flat central region 2, still remains substantially equal to the initial thickness.
  • the thickness is increased and passes through a maximum ei, substantially at mid-arc length, for which values of 3.20 to 3.50 mm have been noted.
  • each set back area 8 occupies, in the longitudinal direction of the collector plate, a small length relative to the length of the areas between two neighboring areas 8, these intermediate areas retaining a planar or cylindrical shape, except in the parts deformed by the punching of the openings 5.
  • An opening 5 is provided in each of these intermediate 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)

Abstract

The collector plate (1) has apertures (5) for fluid circulation tubes in a flat section (2) of the plate, and adjoining curved sections (6, 7). The inner surfaces of the curves are reinforced by ribs (8) made e.g. from folds in the plate material, which is aluminium. In a variant of the design the ribs can extend across the plate from one curved section to the other, and the apertures can be elongated in shape and situated between adjacent ribs.

Description

L'invention concerne une plaque collectrice destinée à délimiter le volume intérieur d'une boite à fluide d'un échangeur de chaleur, notamment d'un radiateur de refroidissement de véhicule automobile, et présentant des ouvertures pour le passage de tubes de circulation de fluide ménagées dans une région sensiblement plane de la plaque qui se raccorde à au moins une région incurvée de forme générale cylindrique s'écartant du plan de la région plane du côté dudit volume intérieur.The invention relates to a collector plate intended to delimit the interior volume of a fluid box of a heat exchanger, in particular of a motor vehicle cooling radiator, and having openings for the passage of fluid circulation tubes. formed in a substantially planar region of the plate which is connected to at least one curved region of generally cylindrical shape deviating from the plane of the planar region on the side of said interior volume.

De telles plaques collectrices sont utilisées en particulier dans des radiateurs servant au refroidissement de l'air de suralimentation de véhicules automobiles, dans lesquels l'air de suralimentation, qui circule dans la boite à fluide et dans les tubes, est à une pression importante et à une température qui peut dépasser 100 °C. Il en résulte pour la plaque collectrice des contraintes mécaniques et thermiques qui peuvent, notamment lorsqu'elle est en alliage d'aluminium, entraîner une fissuration le long de la génératrice de la région incurvée, cette dernière ayant déjà subi une fatigue lors de l'opération de cintrage qui a permis de l'obtenir.Such collector plates are used in particular in radiators serving for cooling the charge air of motor vehicles, in which the charge air, which circulates in the fluid box and in the tubes, is at a high pressure and at a temperature which may exceed 100 ° C. This results in mechanical and thermal stresses for the collector plate which can, especially when it is made of aluminum alloy, cause cracking along the generatrix of the curved region, this the latter having already undergone fatigue during the bending operation which made it possible to obtain it.

Le but de l'invention est de remédier à ces inconvénients, et de fournir une plaque collectrice pouvant résister sans défaillance à de fortes contraintes mécaniques et thermiques.The object of the invention is to remedy these drawbacks, and to provide a collecting plate which can withstand strong mechanical and thermal stresses without failure.

L'invention vise notamment une plaque collectrice du genre défini en introduction, et prévoit que ladite forme cylindrique est interrompue, sans discontinuité de matière, par une multiplicité de zones en retrait réparties le long de sa génératrice et s'étendant chacune sur toute sa longueur d'arc, les faces interne et externe de la plaque étant décalées vers l'intérieur et son épaisseur augmentée, au niveau des zones en retrait, par rapport aux faces et à l'épaisseur correspondant à la forme cylindrique.The invention relates in particular to a collecting plate of the kind defined in the introduction, and provides that said cylindrical shape is interrupted, without discontinuity of material, by a multiplicity of recessed zones distributed along its generatrix and each extending over its entire length. arc, the internal and external faces of the plate being offset inwards and its thickness increased, at the recessed areas, relative to the faces and to the thickness corresponding to the cylindrical shape.

L'augmentation d'épaisseur constatée dans les zones en retrait peut s'expliquer par la nécessité de compenser, à volume constant, la diminution de la dimension de celle-ci dans la direction de la longueur d'arc, due au décalage de la matière vers le centre de courbure. On suppose que cette augmentation d'épaisseur localisée empêche la propagation, le long de la génératrice, de contraintes ou de déformations qui pourraient conduire à la rupture.The increase in thickness observed in the recessed areas can be explained by the need to compensate, at constant volume, the decrease in the size thereof in the direction of the arc length, due to the offset of the material towards the center of curvature. It is assumed that this localized increase in thickness prevents the propagation, along the generator, of stresses or deformations which could lead to rupture.

D'autres caractéristiques, complémentaires ou alternatives, de la plaque collectrice selon l'invention sont énoncées ci-après :

  • - Chaque zone en retrait présente, dans un plan parallèle à la génératrice et traversant l'épaisseur de la plaque, un profil en forme de créneau arrondi et/ou à flancs évasés.
  • - La région incurvée se raccorde, aux deux extrémités de sa longueur d'arc respectivement, à ladite région plane et à une région marginale s'étendant sensiblement selon un plan perpendiculaire à celui de la précédente.
  • - Les faces de la région incurvée sont sensiblement tangentes à celles de la région plane et le cas échéant à celles de la région marginale.
  • - La région plane est de forme allongée et se raccorde par ses deux côtés sensiblement parallèles à deux régions incurvées respectivement présentant lesdites zones en retrait.
  • - Lesdites zones en retrait s'étendent de façon continue de l'une à l'autre des deux régions incurvées en interrompant la forme plane de ladite région plane, chacune desdites ouvertures étant située entre deux zones en retrait voisines.
  • - Elle est réalisée en alliage d'aluminium.
Other characteristics, complementary or alternative, of the collector plate according to the invention are set out below:
  • - Each recessed area has, in a plane parallel to the generator and crossing the thickness of the plate, a profile in the form of a rounded notch and / or with flared sides.
  • - The curved region is connected, at the two ends of its arc length respectively, to said planar region and to a marginal region extending substantially along a plane perpendicular to that of the previous one.
  • - The faces of the curved region are substantially tangent to those of the planar region and if necessary to those of the marginal region.
  • - The flat region is elongated and is connected by its two sides substantially parallel to two curved regions respectively having said recessed areas.
  • - Said recessed areas extend continuously from one to the other of the two curved regions by interrupting the planar shape of said planar region, each of said openings being located between two neighboring recessed areas.
  • - It is made of aluminum alloy.

L'invention a également pour objet un procédé de fabrication d'une plaque collectrice telle que définie ci-dessus, dans lequel on part d'une plaque sensiblement plane et d'épaisseur sensiblement uniforme, on repousse la matière de la plaque, perpendiculairement à son plan, en des zones mutuellement espacées et alignées dans ce plan, on cintre au moins une région de la plaque pour lui donner une forme générale cylindrique en l'écartant du plan initial de la plaque dans le sens où la matière a été repoussée, la génératrice de ladite forme cylindrique étant parallèle à la direction d'alignement desdites zones et ces dernières s'étendant sur toute la longueur d'arc de la forme cylindrique, lesdites ouvertures étant réalisées, avant, pendant ou après les opérations précédentes, dans la région de la plaque qui subsiste dans le plan initial.The invention also relates to a method of manufacturing a collector plate as defined above, in which one starts from a substantially flat plate and of substantially uniform thickness, the material of the plate is pushed back, perpendicular to its plane, in mutually spaced zones aligned in this plane, at least one region of the plate is bent to give it a generally cylindrical shape by moving it away from the initial plane of the plate in the direction in which the material has been repelled, the generatrix of said cylindrical shape being parallel to the direction of alignment of said zones and the latter extending over the entire arc length of the cylindrical shape, said openings being made, before, during or after the previous operations, in the region of the plate that remains in the initial plane.

L'invention vise encore un échangeur de chaleur, notamment un radiateur de refroidissement de véhicule automobile, comprenant une boite à fluide dont le volume intérieur est délimité par une plaque collectrice telle que définie plus haut et communique avec des tubes de circulation de fluide traversant lesdites ouvertures.The invention also relates to a heat exchanger, in particular a motor vehicle cooling radiator, comprising a fluid box whose internal volume is delimited by a collecting plate as defined above and communicates with fluid circulation tubes passing through said openings.

Les caractéristiques et avantages de l'invention seront exposés plus en détail dans la description ci-après, en se référant aux dessins annexés, sur lesquels :

  • - la figure 1 est une vue de dessus d'une plaque collectrice connue;
  • - la figure 2 est une vue partielle de dessus, à plus grande échelle, d'une plaque collectrice selon l'invention;
  • - les figures 3 et 4 sont des vues partielles en coupe selon la ligne III-III de la figure 5 et selon la ligne IV-IV de la figure 2;
  • - les figures 5 et 6 sont des vues en coupe selon les lignes V-V et VI-VI de la figure 2 respectivement, la figure 6 montrant la plaque collectrice dans une étape intermédiaire de sa fabrication; et
  • - la figure 7 représente des profils de la plaque collectrice selon les figures 2 à 6.
The characteristics and advantages of the invention will be explained in more detail in the description below, with reference to the accompanying drawings, in which:
  • - Figure 1 is a top view of a known header plate;
  • - Figure 2 is a partial top view, on a larger scale, of a header plate according to the invention;
  • - Figures 3 and 4 are partial sectional views along line III-III of Figure 5 and along line IV-IV of Figure 2;
  • - Figures 5 and 6 are sectional views along lines VV and VI-VI of Figure 2 respectively, Figure 6 showing the header plate in an intermediate step of its manufacture; and
  • FIG. 7 represents profiles of the collector plate according to FIGS. 2 to 6.

La figure 1 représente une plaque collectrice connue 1 destinée à faire partie d'un radiateur de refroidissement d'air de suralimentation d'un véhicule automobile. Cette plaque collectrice a la même forme générale que la plaque collectrice selon l'invention qui sera décrite en détail plus loin en relation avec les figures 2 à 6. Elle est réalisée à partir d'un rectangle allongé en tôle d'alliage d'aluminium, et comprend une région plane 2 de forme rectangulaire allongée, reliée sur ses deux côtés longitudinaux respectivement à des bords relevés 3, 4 s'étendant tous deux en avant du plan de la figure, par l'intermédiaire de régions incurvées en quart de cercle. La région plane médiane 2 est percée d'ouvertures 5 alignées dans la direction longitudinale de la plaque, destinées au passage de tubes pour la circulation de l'air à refroidir, chacune de ces ouvertures ayant la forme générale d'un rectangle allongé perpendiculairement à la direction longitudinale de la plaque.FIG. 1 represents a known manifold plate 1 intended to form part of a charge air cooling radiator of a motor vehicle. This collector plate has the same general shape as the collector plate according to the invention which will be described in detail below in connection with FIGS. 2 to 6. It is produced from an elongated rectangle made of aluminum alloy sheet , and comprises a flat region 2 of elongated rectangular shape, connected on its two longitudinal sides respectively to raised edges 3, 4 both extending in front of the plane of the figure, by means of curved regions in a quarter of a circle . The central flat region 2 is pierced with openings 5 aligned in the longitudinal direction of the plate, intended for the passage of tubes for the circulation of the air to be cooled, each of these openings having the general shape of an elongated rectangle perpendicular to the longitudinal direction of the plate.

On retrouve dans la plaque collectrice 1 illustrée aux figures 2 à 6 la région plane médiane 2, les bords relevés 3 et 4 et les ouvertures 5. Les bords 3 et 4, qui s'étendent selon des plans perpendiculaires à celui de la région médiane 2, se raccordent à celle-ci par des régions respectives 6, 7 incurvées en quart de cercle. De façon connue, cette forme générale est obtenue en déformant une plaque initialement plane de façon que les régions situées de part et d'autre de la région médiane 2 s'éloignent de ce plan en formant les régions incurvées cylindriques 6, 7 et les régions marginales planes 3, 4.We find in the manifold 1 illustrated in Figures 2 to 6 the middle plane region 2, the raised edges 3 and 4 and the openings 5. The edges 3 and 4, which extend in planes perpendicular to that of the middle region 2, are connected to the latter by respective regions 6, 7 curved in a quarter circle. In known manner, this general shape is obtained by deforming an initially planar plate so that the regions situated on either side of the middle region 2 move away from this plane by forming the curved cylindrical regions 6, 7 and the regions marginal planes 3, 4.

Selon l'invention, avant l'opération de cintrage des régions 6 et 7, la matière de la plaque est repoussée, dans des zones 8 réparties dans la direction longitudinale de la plaque, du même côté que le déplacement de la matière pour la réalisation des régions incurvées, c'est-à-dire vers la droite des figures 5 et 6. Le résultat de ce repoussage, avant la réalisation des régions incurvées, est montré dans la moitié supérieure de la figure 6. On voit que la zone 8 forme une rainure 9 et une nervure 10 allongées perpendiculairement à la direction longitudinale de la plaque et disposées en vis-à-vis l'une de l'autre respectivement dans la face interne et dans la face externe, tournées vers la gauche et vers la droite de la figure 6. Cette rainure et cette nervure s'étendent sur toute la largeur de la région médiane 2 et de la région 7' destinée à former, après cintrage, la région incurvée 7. La rainure 9 et la nervure 10 s'étendent également, symétriquement par rapport au plan longitudinal médian de la plaque, sur toute la largeur de la région destinée à former la région incurvée 6, cette dernière étant montrée déjà réalisée sur la figure 6. Dans la plaque collectrice terminée, elles s'étendent sans interruption de la région marginale 3 à la région marginale 4, en s'arrêtant à une certaine distance des bords libres de ces dernières. Le prolongement des zones en retrait 8, d'une région incurvée à l'autre, sur toute la largeur de la région plane 2, permet a la plaque collectrice d'absorber sans déformations permanentes de fortes dilatations thermiques, comme décrit dans FR-A-2 538 526. Dans les applications où cette fonction n'est pas nécessaire, les zones en retrait peuvent être limitées aux régions incurvées.According to the invention, before the bending operation of regions 6 and 7, the material of the plate is pushed back, in zones 8 distributed in the longitudinal direction of the plate, on the same side as the movement of the material for making of the curved regions, that is to the right of FIGS. 5 and 6. The result of this pushing back, before the realization of the curved regions, is shown in the upper half of FIG. 6. It can be seen that the zone 8 forms a groove 9 and a rib 10 elongated perpendicular to the longitudinal direction of the plate and arranged opposite one another in the internal face and in the external face, turned to the left and to the right of FIG. 6. This groove and this rib extend over the entire width of the middle region 2 and of the region 7 'intended to form, after bending, the curved region 7. The groove 9 and the rib 10 s' also extend, symmetrical in relation to the median longitudinal plane of the plate, over the entire width of the region intended to form the curved region 6, the latter being shown already produced in FIG. 6. In the finished collector plate, they extend without interruption from the marginal region 3 to the marginal region 4, stopping at a certain distance from the free edges of the latter. The extension of the recessed areas 8, from one curved region to the other, over the entire width of the flat region 2, allows the collector plate to absorb large amounts of thermal expansion without permanent deformation, as described in FR-A -2 538 526. In applications where this function is not necessary, the recessed areas can be limited to the curved regions.

On a dessiné sur la figure 7 le profil de la plaque collectrice comme vu dans le plan de la figure 5, dans la région incurvée 6 et au voisinage de celle-ci, en trait plein pour la plaque collectrice selon l'invention et en trait interrompu pour la plaque collectrice connue selon la figure 1. Dans le cas de la plaque collectrice connue, l'épaisseur de paroi finale est sensiblement uniforme et égale à l'épaisseur de la plaque plane de départ, par exemple 2,90 mm. Pour la plaque collectrice selon l'invention, l'épaisseur eo, à mi-largeur de la zone en retrait 8, dans la région médiane plane 2, reste encore sensiblement égale à l'épaisseur initiale. En revanche, dans la région incurvée 6, l'épaisseur est augmentée et passe par un maximum ei, sensiblement à mi-longueur d'arc, pour lequel on a relevé des valeurs de 3,20 à 3,50 mm.The profile of the collector plate has been drawn in FIG. 7 as seen in the plane of FIG. 5, in and in the vicinity of the curved region 6, in solid line for the collector plate according to the invention and in line interrupted for the known collector plate according to FIG. 1. In the case of the known collector plate, the final wall thickness is substantially uniform and equal to the thickness of the starting flat plate, for example 2.90 mm. For the collector plate according to the invention, the thickness eo, at mid-width of the recessed area 8, in the flat central region 2, still remains substantially equal to the initial thickness. On the other hand, in the curved region 6, the thickness is increased and passes through a maximum ei, substantially at mid-arc length, for which values of 3.20 to 3.50 mm have been noted.

Le profil des rainures 9 et des nervures 8, comme vu dans un plan perpendiculaire à leur direction longitudinale, est déterminé par les outils servant à repousser la matière pour former les zones en retrait 8. Ce profil est avantageusement en créneau arrondi et à flan évasé, comme on le voit aux figures 3 et 4, de façon à minimiser les contraintes mécaniques. On voit également que chaque zone en retrait 8 occupe, dans la direction longitudinale de la plaque collectrice, une longueur petite par rapport à la longueur des zones comprises entre deux zones 8 voisines, ces zones intermédiaires conservant une forme plane ou cylindrique, sauf dans les parties déformées par le poinçonnage des ouvertures 5. Une ouverture 5 est ménagée dans chacune de ces zones intermédiaires.The profile of the grooves 9 and the ribs 8, as seen in a plane perpendicular to their longitudinal direction, is determined by the tools used to repel the material to form the recessed areas 8. This profile is advantageously in rounded notch and flared blank , as seen in Figures 3 and 4, so as to minimize the mechanical stresses. It can also be seen that each set back area 8 occupies, in the longitudinal direction of the collector plate, a small length relative to the length of the areas between two neighboring areas 8, these intermediate areas retaining a planar or cylindrical shape, except in the parts deformed by the punching of the openings 5. An opening 5 is provided in each of these intermediate zones.

Claims (10)

1. Plaque collectrice (1) destinée à délimiter le volume intérieur d'une boite à fluide d'un échangeur de chaleur, notamment d'un radiateur de refroidissement de véhicule automobile, et présentant des ouvertures (5) pour le passage de tubes de circulation de fluide ménagées dans une région sensiblement planer (2) de la plaque qui se raccorde à au moins une région incurvée (6, 7) de forme générale cylindrique s'écartant du plan de la région plane du côté dudit volume intérieur, caractérisée en ce que ladite forme cylindrique est interrompue, sans discontinuité de matière, par une multiplicité de zones en retrait (8) réparties le long de sa génératrice et s'étendant chacune sur toute sa longueur d'arc, les faces interne et externe de la plaque étant décalées vers l'intérieur et son épaisseur augmentée, au niveau des zones en retrait, par rapport aux faces et à l'épaisseur correspondant à la forme cylindrique.1. Collector plate (1) intended to delimit the interior volume of a fluid box of a heat exchanger, in particular of a motor vehicle cooling radiator, and having openings (5) for the passage of tubes of circulation of fluid arranged in a substantially level region (2) of the plate which connects to at least a curved region (6, 7) of generally cylindrical shape deviating from the plane of the plane region on the side of said interior volume, characterized in that said cylindrical shape is interrupted, without discontinuity of material, by a multiplicity of recessed areas ( 8) distributed along its generatrix and each extending over its entire arc length, the internal and external faces of the plate being offset towards the inside and its thickness increased, at the recessed areas, relative to the faces and thickness corresponding to the cylindrical shape. 2. Plaque collectrice selon la revendication 1, caractérisée en ce que chaque zone en retrait présente, dans un plan parallèle à la génératrice et traversant l'épaisseur de la plaque, un profil en forme de créneau arrondi et/ou à flancs évasés.2. Collector plate according to claim 1, characterized in that each recessed area has, in a plane parallel to the generator and crossing the thickness of the plate, a profile in the form of a rounded notch and / or with flared sides. 3. Plaque collectrice selon l'une des revendications 1 et 2, caractérisée en ce que la région incurvée (6, 7) se raccorde, aux deux extrémités de sa longueur d'arc respectivement, à ladite région plane (2) et à une région marginale (3, 4) s'étendant sensiblement selon un plan perpendiculaire à celui de la précédente.3. Collector plate according to one of claims 1 and 2, characterized in that the curved region (6, 7) is connected, at the two ends of its arc length respectively, to said planar region (2) and to a marginal region (3, 4) extending substantially along a plane perpendicular to that of the previous one. 4. Plaque collectrice selon l'une des revendications précédentes, caractérisée en ce que les faces de la région incurvée sont sensiblement tangentes à celles de la région plane et le cas échéant à celles de la région marginale.4. Collector plate according to one of the preceding claims, characterized in that the faces of the curved region are substantially tangent to those of the planar region and if necessary to those of the marginal region. 5. Plaque collectrice selon l'une des revendications précédentes, caractérisée en ce que la région plane est de forme allongée et se raccorde par ses deux côtés sensiblement parallèles à deux régions incurvées respectivement (6, 7) présentant lesdites zones en retrait (8).5. Collector plate according to one of the preceding claims, characterized in that the planar region is of elongated shape and is connected by its two sides substantially parallel to two curved regions respectively (6, 7) having said recessed areas (8) . 6. Plaque collectrice selon la revendication 5, caractérisée en ce que lesdites zones en retrait s'étendent de façon continue de l'une à l'autre des deux régions incurvées en interrompant la forme plane de ladite région plane, chacune desdites ouvertures (5) étant située entre deux zones en retrait (8) voisines.6. Collector plate according to claim 5, characterized in that said recessed areas extend continuously from one to the other of the two curved regions by interrupting the planar shape of said planar region, each of said openings (5 ) being located between two neighboring recessed areas (8). 7. Plaque collectrice selon l'une des revendications précédentes, caractérisée en ce qu'elle est réalisée en alliage d'aluminium.7. Collector plate according to one of the preceding claims, characterized in that it is made of aluminum alloy. 8. Procédé de fabrication d'une plaque collectrice selon l'une des revendications précédentes, dans lequel on part d'une plaque sensiblement plane et d'épaisseur sensiblement uniforme, on repousse la matière de la plaque, perpendiculairement à son plan, en des zones (8) mutuellement espacées et alignées dans ce plan, on cintre au moins une région (7') de la plaque pour lui donner une forme générale cylindrique en l'écartant du plan initial de la plaque dans le sens où la matière a été repoussée, la génératrice de ladite forme cylindrique étant parallèle à la direction d'alignement desdites zones et ces dernières s'étendant sur toute la longueur d'arc de la forme cylindrique, lesdites ouvertures (5) étant réalisées, avant, pendant ou après les opérations précédentes, dans la région (2) de la plaque qui subsiste dans le plan initial.8. A method of manufacturing a collector plate according to one of the preceding claims, in which one starts from a substantially flat plate and of substantially uniform thickness, the material of the plate is pushed back, perpendicular to its plane, in mutually spaced zones (8) aligned in this plane, at least one region (7 ') of the plate is bent to give it a generally cylindrical shape by moving it away from the initial plane of the plate in the direction in which the material has been pushed back, the generatrix of said cylindrical shape being parallel to the direction of alignment of said areas and the latter extending over the entire arc length of the cylindrical shape, said openings (5) being made before, during or after the previous operations, in the region (2) of the plate which remains in the initial plane. 9. Échangeur de chaleur, notamment radiateur de refroidissement de véhicule automobile, comprenant une boite à fluide dont le volume intérieur est délimité par une plaque collectrice (1) et communique avec des tubes de circulation de fluide traversant des ouvertures (5) ménagées dans une région sensiblement plane (2) de la plaque qui se raccorde à au moins une région incurvée (6, 7) de forme générale cylindrique s'écartant du plan de la région plane du côté dudit volume intérieur, caractérisé en ce que la plaque collectrice est conforme à l'une des revendications 1 à 7.9. Heat exchanger, in particular motor vehicle cooling radiator, comprising a fluid box whose internal volume is delimited by a collecting plate (1) and communicates with fluid circulation tubes passing through openings (5) formed in a substantially flat region (2) of the plate which is connected to at least one curved region (6, 7) of generally cylindrical shape deviating from the plane of the flat region on the side of said interior volume, characterized in that the collector plate is according to one of claims 1 to 7. 10. Échangeur de chaleur selon la revendication 9 pour le refroidissement de l'air de suralimentation du moteur thermique d'un véhicule automobile.10. Heat exchanger according to claim 9 for cooling the charge air of the heat engine of a motor vehicle.
EP95107767A 1994-05-26 1995-05-22 Reinforced end plate for heat exchanger Expired - Lifetime EP0684441B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9406398A FR2720490B1 (en) 1994-05-26 1994-05-26 Reinforced collecting plate for heat exchanger.
FR9406398 1994-05-26

Publications (2)

Publication Number Publication Date
EP0684441A1 true EP0684441A1 (en) 1995-11-29
EP0684441B1 EP0684441B1 (en) 1998-08-12

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EP95107767A Expired - Lifetime EP0684441B1 (en) 1994-05-26 1995-05-22 Reinforced end plate for heat exchanger

Country Status (7)

Country Link
US (1) US5492172A (en)
EP (1) EP0684441B1 (en)
KR (1) KR950033405A (en)
BR (1) BR9502551A (en)
DE (1) DE69503972T2 (en)
ES (1) ES2122392T3 (en)
FR (1) FR2720490B1 (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2742528A1 (en) * 1995-12-13 1997-06-20 Valeo Thermique Moteur Sa Automobile heat exchanger with reinforced plate manifold
FR2742533A1 (en) * 1995-12-13 1997-06-20 Valeo Thermique Moteur Sa Heat exchanger with reinforced pressure resistance
FR2789169A1 (en) * 1999-01-29 2000-08-04 Valeo Climatisation Heat exchanger for heating/conditioning system for car has slots defined by flanges allowing setting of flat pipes and bell-shaped four-sided cap with rims attached to edges of collecting plate
FR2791764A1 (en) * 1999-03-30 2000-10-06 Denso Corp HEAT EXCHANGER WITH HEAD COLLECTOR
WO2004090454A1 (en) * 2003-04-10 2004-10-21 Behr Gmbh & Co. Kg Heat exchanger, especially a charge-air cooler for motor vehicles
FR2952711A1 (en) * 2009-11-19 2011-05-20 Valeo Systemes Thermiques COLLECTOR PLATE, COLLECTOR BOX COMPRISING SUCH A PLATE AND HEAT EXCHANGER EQUIPPED WITH SUCH A BOX

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08254399A (en) * 1995-01-19 1996-10-01 Zexel Corp Heat exchanger
JP3414171B2 (en) * 1996-11-29 2003-06-09 株式会社デンソー Heat exchanger
WO2004005827A1 (en) * 2002-07-05 2004-01-15 Behr Gmbh & Co. Kg Heat exchanger in particular an evaporator for a vehicle air-conditioning unit
JP2004219044A (en) * 2002-12-26 2004-08-05 Denso Corp Manufacturing method of heat exchanger and core plate
CN100483046C (en) * 2003-07-08 2009-04-29 昭和电工株式会社 Evaporator
JP2006189205A (en) * 2005-01-06 2006-07-20 Denso Corp Heat exchanger
JP2006189206A (en) * 2005-01-06 2006-07-20 Denso Corp Heat exchanger
JP5264181B2 (en) * 2005-02-03 2013-08-14 ベール ゲーエムベーハー ウント コー カーゲー Heat exchanger
JP2006284107A (en) * 2005-04-01 2006-10-19 Denso Corp Heat exchanger
US7614388B2 (en) * 2005-05-09 2009-11-10 Phillips & Temro Industries Inc. Flanged heating element with thermal expansion joint
FR2892807B1 (en) * 2005-11-02 2007-12-14 Valeo Systemes Thermiques REINFORCED COLLECTOR FOR A COLLECTOR BOX OF A HEAT EXCHANGER AND COLLECTOR BOX COMPRISING SUCH A COLLECTOR.
SE529769E (en) * 2006-04-04 2014-04-22 Alfa Laval Corp Ab Plate heat exchanger comprising at least one reinforcing plate disposed outside one of the outer heat exchanger plates
US7413006B2 (en) * 2006-04-06 2008-08-19 Modine Manufacturing Company Header plate for use in a heat exchanger
US20090183864A1 (en) * 2006-06-01 2009-07-23 Behr Gmbh & Co. Kg Heat exchanger, in particular an intercooler, comprising a reinforced pipe base
DE102007028792A1 (en) * 2006-06-29 2008-01-31 Denso Corp., Kariya heat exchangers
FR2929392B1 (en) * 2008-03-31 2012-12-21 Barriquand Echangeurs DEVICE FOR HOMOGENIZING AN INPUT FLOW IN A PLATE EXCHANGER
US8978746B2 (en) 2011-02-04 2015-03-17 Modine Manufacturing Company Heat exchanger header plate
DE102014213758A1 (en) * 2014-07-15 2016-01-21 Mahle International Gmbh Tube bottom and heat exchanger
JP6790948B2 (en) * 2017-03-21 2020-11-25 株式会社デンソー Heat exchanger
DE102020212713A1 (en) * 2020-10-08 2022-04-14 Mahle International Gmbh Tube sheet, heat exchanger and method for producing a heat exchanger

Citations (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
FR2538526A1 (en) 1982-12-22 1984-06-29 Chausson Usines Sa COLLECTOR PLATE FOR TUBE AND WATER BOX HEAT EXCHANGER
US4881594A (en) * 1989-03-27 1989-11-21 General Motors Corporation Header plate for pressure vessels, heat exchangers and the like
US5107926A (en) * 1990-04-03 1992-04-28 Thermal Components, Inc. Manifold assembly for a parallel flow heat exchanger
EP0521489A1 (en) * 1991-07-02 1993-01-07 THERMAL-WERKE Wärme-, Kälte-, Klimatechnik GmbH Collector for a flat tube condenser
FR2681421A1 (en) * 1991-09-13 1993-03-19 Behr Gmbh & Co Connection manifold for a heat exchanger, in particular for a coolant condenser

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5228512A (en) * 1991-04-02 1993-07-20 Modine Manufacturing Company Aluminum charge air cooler and method of making the same
US5193613A (en) * 1992-06-30 1993-03-16 Wallis Bernard J Heat exchanger header tube and method of making

Patent Citations (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
FR2538526A1 (en) 1982-12-22 1984-06-29 Chausson Usines Sa COLLECTOR PLATE FOR TUBE AND WATER BOX HEAT EXCHANGER
US4881594A (en) * 1989-03-27 1989-11-21 General Motors Corporation Header plate for pressure vessels, heat exchangers and the like
US5107926A (en) * 1990-04-03 1992-04-28 Thermal Components, Inc. Manifold assembly for a parallel flow heat exchanger
EP0521489A1 (en) * 1991-07-02 1993-01-07 THERMAL-WERKE Wärme-, Kälte-, Klimatechnik GmbH Collector for a flat tube condenser
FR2681421A1 (en) * 1991-09-13 1993-03-19 Behr Gmbh & Co Connection manifold for a heat exchanger, in particular for a coolant condenser

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2742528A1 (en) * 1995-12-13 1997-06-20 Valeo Thermique Moteur Sa Automobile heat exchanger with reinforced plate manifold
FR2742533A1 (en) * 1995-12-13 1997-06-20 Valeo Thermique Moteur Sa Heat exchanger with reinforced pressure resistance
FR2789169A1 (en) * 1999-01-29 2000-08-04 Valeo Climatisation Heat exchanger for heating/conditioning system for car has slots defined by flanges allowing setting of flat pipes and bell-shaped four-sided cap with rims attached to edges of collecting plate
FR2791764A1 (en) * 1999-03-30 2000-10-06 Denso Corp HEAT EXCHANGER WITH HEAD COLLECTOR
WO2004090454A1 (en) * 2003-04-10 2004-10-21 Behr Gmbh & Co. Kg Heat exchanger, especially a charge-air cooler for motor vehicles
FR2952711A1 (en) * 2009-11-19 2011-05-20 Valeo Systemes Thermiques COLLECTOR PLATE, COLLECTOR BOX COMPRISING SUCH A PLATE AND HEAT EXCHANGER EQUIPPED WITH SUCH A BOX
WO2011061085A1 (en) * 2009-11-19 2011-05-26 Valeo Systemes Thermiques Collector plate, collector box including such a plate, and heat exchanger fitted with such a box

Also Published As

Publication number Publication date
ES2122392T3 (en) 1998-12-16
BR9502551A (en) 1995-12-26
FR2720490A1 (en) 1995-12-01
FR2720490B1 (en) 1996-07-12
KR950033405A (en) 1995-12-26
US5492172A (en) 1996-02-20
DE69503972D1 (en) 1998-09-17
EP0684441B1 (en) 1998-08-12
DE69503972T2 (en) 1998-12-10

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