EP0256913A1 - Heat exchanger having a tube bundle and plastic header boxes - Google Patents

Heat exchanger having a tube bundle and plastic header boxes Download PDF

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Publication number
EP0256913A1
EP0256913A1 EP87401736A EP87401736A EP0256913A1 EP 0256913 A1 EP0256913 A1 EP 0256913A1 EP 87401736 A EP87401736 A EP 87401736A EP 87401736 A EP87401736 A EP 87401736A EP 0256913 A1 EP0256913 A1 EP 0256913A1
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EP
European Patent Office
Prior art keywords
fluid box
heat exchanger
tubes
fluid
ribs
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Granted
Application number
EP87401736A
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German (de)
French (fr)
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EP0256913B2 (en
EP0256913B1 (en
Inventor
Marco Valier
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Valeo Thermique Moteur SA
Original Assignee
Valeo SE
Valeo Thermique Moteur SA
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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
    • F28F21/00—Constructions of heat-exchange apparatus characterised by the selection of particular materials
    • F28F21/06—Constructions of heat-exchange apparatus characterised by the selection of particular materials of plastics material
    • F28F21/067—Details
    • 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
    • F28F9/001—Casings in the form of plate-like arrangements; Frames enclosing a heat exchange core
    • 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
    • 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
    • F28F9/0221—Header boxes or end plates formed by stacked elements
    • 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 with a tube bundle and plastic fluid boxes, in particular a radiator for the cooling of a truck engine.
  • heat exchangers of the type comprising a bundle of parallel tubes and, at at least one end thereof, a plastic fluid box, the ends of the tubes entering the fluid box in a liquid-tight manner by holes made in a wall of the fluid box forming a manifold, and further comprising at least one mounting cross member extending parallel to the tubes and fixed respectively to one end of the fluid box, in an offset region, in the direction longitudinal of the tubes and towards the median transverse plane thereof, relative to the manifold.
  • the fluid box has a flange on which are fixed, on the one hand, the manifold and on the other hand, intermediate parts used for mounting the cross member, the fixing of said intermediate parts made by claws or legs folded over the edge of the water box.
  • the assembly of the heat exchanger is complicated since it is necessary to fix the intermediate parts between each fluid box and each crosspiece.
  • the fluid boxes must be of a very specific type in which the collector is an independent piece which has just been attached and fixed on the peripheral edge of the fluid box.
  • the bottoms which form the ends of the fluid boxes extend perpendicular to the longitudinal direction of the fluid box, that is to say parallel to the longitudinal direction of the tubes. . It follows that the size of the heat exchanger in the plane defined by the longitudinal direction of the tubes and the longitudinal direction of the fluid boxes is substantially that of a rectangle. Consequently, the width of the heat exchanger, i.e. its dimension in the longitudinal direction of the fluid boxes, remains constant over its entire height, i.e. over its extent in the direction longitudinal of the tubes.
  • the object of the invention is to provide a heat exchanger allowing particularly simple mounting of the cross member (s) on each fluid box, regardless of the type of fluid box used.
  • Another object of the invention is to provide a heat exchanger structure allowing a reduction in local width.
  • the assembly of the heat exchanger is much simpler.
  • the rigidity of the heat exchanger is increased due to the fact that the bases and the ribs are integral with the fluid box.
  • the base extends parallel to the tubes and is connected to the fluid box by two parallel ribs.
  • these ribs have the shape of a right triangle.
  • the invention applies to any type of plastic fluid box, in particular to those comprising a tubular wall including a manifold-shaped portion.
  • a tubular wall including a manifold-shaped portion.
  • one end of the tubular wall, which forms the bottom is molded, while the other end is open to receive a bottom cover.
  • the invention also applies to fluid boxes in which the two end bottoms have come from molding and in which the collector consists of another piece of plastic material which is attached and fixed, for example by welding, to the rest of the fluid box.
  • the invention can also be applied to fluid boxes in a single section or in two sections.
  • each fluid box consist of funds extending obliquely so that the length of the fluid box is less in its longitudinal zone opposite to the collector than in the longitudinal zone of the collector, which makes it possible to locally reduce the overall dimensions in width of the heat exchanger.
  • the radiator shown in Figure 1 has, seen from the front according to Figure 1, the general shape of a rectangle whose sides extend vertically and horizontally. It essentially comprises a bundle of parallel tubes 1 directed vertically and regularly distributed in several rows over the width of the radiator. To simplify the drawing, only two tubes 1 are shown in Figure 1 in the vicinity of one of the vertical edges of the radiator. The ends of the tubes 1 open into fluid boxes, for example water boxes, of generally tubular shape 2-1, 2-2, extending respectively along the upper and lower horizontal sides of the radiator.
  • Each of the fluid boxes is, in the example, formed of two tubular sections 20 molded from plastic and assembled together by welding.
  • Each tubular section 20 which is molded in one piece has, as shown in Figures 2 and 3, a tubular wall 21, a bottom 22 closing one end of the wall 21, an assembly base 23 extending parallel to the tubes 1 and two ribs 24 connecting the base 23 to the tubular wall 21.
  • These two ribs are parallel and have the shape general of a right triangle (figure 2).
  • the end 25, opposite the bottom 22, of the tubular wall is open.
  • Two sections 20 are welded to each other by friction through their end faces 26 surrounding the opening 25, thus producing a tubular fluid box closed at its two ends by the oblique bottoms 22.
  • the tubular wall 21 of each fluid box comprises a flat wall portion 27 forming a manifold, crossed in a liquid-tight manner by the ends of the tubes 1 in a manner known per se.
  • the oblique bottoms 22 are oriented so that the length of the fluid box, that is to say the width of the radiator, decreases from the plane of the collector towards the part opposite the latter of the tubular wall. 21, that is to say towards the upper or lower end of the radiator. The angles of these are therefore chamfered, which facilitates its accommodation in the vehicle body.
  • the bases 23 of the tubular sections 20 serving to assemble them to profiled crosspieces 3 extending along the vertical sides of the radiator.
  • Each cross member 3 comprises a back 30 forming the corresponding lateral face of the radiator and two wings 31 extending along the main faces thereof.
  • the crosspieces 3 serve to reinforce the structure of the radiator and to mount it on the vehicle by means of lugs 41 and 42 which are fixed to it.
  • the internal face of the backs 30 rests on horizontal ribs 50 and vertical ribs 51 belonging to the base 23 and defining, by their vertices, a support plane 52 for the crosspieces (FIGS. 2 and 3).
  • the support plane 52 is perpendicular to the longitudinal direction fluid boxes, therefore parallel to the longitudinal direction of the tubes 1.
  • Each base 23 is crossed by four holes 53 surrounded by bosses 54 which terminate in the support plane 52.
  • These holes 53 and corresponding holes made in the back crosspieces allow the assembly of the latter to the fluid boxes by assembly elements 6 such as rivets or screws for example.
  • each base 23 is offset, relative to the tubular wall 21, in the direction of the median transverse plane M of the tubes 1 ( Figure 1). More specifically, the base is on the side of the plane M with respect to the plane of the manifold 27. Ribs 24 extending substantially along the two main faces of the radiator respectively ensure a rigid connection of the base to the tubular wall 21. Each rib 24 has the shape of a right triangle of which one side of the right angle coincides with a vertical side of the base and the other of which corresponds to a part of the longitudinal side of the manifold. The hypotenuse of the right triangle forms a free side of the rib.
  • the fluid boxes 2-1 and 2-2 are linked to each other in their central region by two tie rods 55 passing through holes made in bosses 56 provided on the tubular walls of the tubular sections 20.
  • These tie rods 55 support the longitudinal forces due to the tendency of the fluid boxes to bend when the radiator is full of pressurized fluid, and thus prevent tearing forces being exerted on the welds of the ends of the tubular sections.
  • One of the ends 57 of each tie rod is folded at a right angle and rests on a boss 56, while the opposite end 58 is threaded and cooperates with a nut 59 which is tightened on another boss 56.
  • heat exchangers comprising one or two crosspieces.

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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

1. A heat exchanger of the kind comprising a bundle of parallel tubes (1) and, at one or both ends of the latter, a fluid manifold (2-1, 2-2), of plastics material, with the ends of the tubes (1) penetrating into the fluid manifold in a fluid-tight manner through holes formed in a wall of the fluid manifold which constitutes a collector (27), and further comprising at least one mounting beam (3) extending parallel to the tubes and fixed at one end of the fluid manifold, in a region which is offset with respect to the collector in the longitudinal direction of the tubes and towards the median transverse plane (M) of the latter, the connection between the mounting beam (3) and the fluid manifold being reinforced with ribs (24) having the shape of a right-angled triangle, characterised in that the mounting beam (3) is assembled on a base (23) moulded integrally with the fluid manifold, in that the base (23) extends parallel to the tubes (1), and in that the said base is connected to the fluid manifold by means of the ribs (24), which are themselves also formed by moulding integrally with the fluid manifold.

Description

L'invention concerne un échangeur de chaleur à faisceau de tubes et boîtes à fluide en matière plastique, notamment un radiateur pour le refroidisssement d'un moteur de poids lourd.The invention relates to a heat exchanger with a tube bundle and plastic fluid boxes, in particular a radiator for the cooling of a truck engine.

On connaît des échangeurs de chaleur du type comprenant un faisceau de tubes parallèles et, à au moins une extrémité de celui-ci, une boîte à fluide en matière plastique, les extrémités des tubes pénétrant dans la boîte à fluide de façon étanche aux liquides par des trous ménagés dans une paroi de la boîte à fluide formant collecteur, et comprenant en outre au moins une traverse de montage s'étendant paral­lèlement aux tubes et fixée respectivement à une extrémité de la boîte à fluide, en une région décalée, dans la direc­tion longitudinale des tubes et vers le plan transversal médian de ceux-ci, par rapport au collecteur.There are known heat exchangers of the type comprising a bundle of parallel tubes and, at at least one end thereof, a plastic fluid box, the ends of the tubes entering the fluid box in a liquid-tight manner by holes made in a wall of the fluid box forming a manifold, and further comprising at least one mounting cross member extending parallel to the tubes and fixed respectively to one end of the fluid box, in an offset region, in the direction longitudinal of the tubes and towards the median transverse plane thereof, relative to the manifold.

Dans les échangeurs de chaleur connus de ce type, la boîte à fluide comporte un rebord sur lequel sont fixés, d'une part, le collecteur et d'autre part, des pièces intermé­diaires servant au montage de la traverse, la fixation des­dites pièces intermédiaires s'effectuant par des griffes ou pattes repliées sur le rebord de la boîte à eau.In known heat exchangers of this type, the fluid box has a flange on which are fixed, on the one hand, the manifold and on the other hand, intermediate parts used for mounting the cross member, the fixing of said intermediate parts made by claws or legs folded over the edge of the water box.

Il en résulte que le montage de l'échangeur de chaleur est compliqué puisqu'il faut fixer les pièces intermédiaires entre chaque boîte à fluide et chaque traverse. En outre, les boîtes à fluide doivent être d'un type bien précis dans lequel le collecteur est une pièce indépendante que l'on vient rapporter et fixer sur le bord périphérique de la boî­te à fluide. En outre, dans les échangeurs de chaleur connus de ce type, les fonds qui forment les extrémités boîtes à fluide s'étendent perpendiculairement à la direction longitudinale de la boîte à fluide, c'est-à-dire parallèlement à la direction longitudinale des tubes. Il en résulte que l'encombrement de l'échangeur de chaleur dans le plan défini par la direction longitudinale des tubes et la direction longitudinale des boîtes à fluide est sensiblement celui d'un rectangle. Par conséquent, la largeur de l'échangeur de chaleur, c'est-à-dire sa dimension dans la direction longitudinale des boîtes à fluide, reste constante sur toute sa hauteur, c'est-à-dire sur son étendue dans la direction longitudinale des tubes.As a result, the assembly of the heat exchanger is complicated since it is necessary to fix the intermediate parts between each fluid box and each crosspiece. In addition, the fluid boxes must be of a very specific type in which the collector is an independent piece which has just been attached and fixed on the peripheral edge of the fluid box. In addition, in known heat exchangers of this type, the bottoms which form the ends of the fluid boxes extend perpendicular to the longitudinal direction of the fluid box, that is to say parallel to the longitudinal direction of the tubes. . It follows that the size of the heat exchanger in the plane defined by the longitudinal direction of the tubes and the longitudinal direction of the fluid boxes is substantially that of a rectangle. Consequently, the width of the heat exchanger, i.e. its dimension in the longitudinal direction of the fluid boxes, remains constant over its entire height, i.e. over its extent in the direction longitudinal of the tubes.

Il est avantageux dans certains cas, pour loger plus facile­ment le radiateur dans la carrosserie du véhicule, de ré­duire sa largeur à l'une au moins de ses extrémités, notam­ment son extrémité supérieure, sans modifier la largeur du faisceau de tubes et la longueur du collecteur qui ont une influence essentielle sur la capacité d'échange thermique.It is advantageous in certain cases, to accommodate the radiator more easily in the vehicle body, to reduce its width to at least one of its ends, in particular its upper end, without modifying the width of the bundle of tubes and the length of the collector which have an essential influence on the heat exchange capacity.

Le but de l'invention est de procurer un échangeur de cha­leur permettant un montage particulièrement simple de la ou des traverses sur chaque boîte à fluide, et cela quel que soit le type de boîte à fluide utilisé.The object of the invention is to provide a heat exchanger allowing particularly simple mounting of the cross member (s) on each fluid box, regardless of the type of fluid box used.

Un autre but de l'invention est de procurer une structure d'échangeur de chaleur permettant une réduction de largeur locale.Another object of the invention is to provide a heat exchanger structure allowing a reduction in local width.

Ces buts sont atteints selon l'invention, dans un échangeur de chaleur du type défini dans l'introduction, en ce que la traverse est assemblée sur une embase venue de moulage avec la boîte à fluide et reliée par des nervures à la boîte à fluide.These objects are achieved according to the invention, in an exchanger heat of the type defined in the introduction, in that the cross member is assembled on a base molded with the fluid box and connected by ribs to the fluid box.

Du fait que les embases sont venues de moulage avec la boîte à fluide, il n'est pas nécessaire de prévoir de pièce inter­médiaire entre la boîte à fluide et les traverses.Because the bases came from molding with the fluid box, it is not necessary to provide an intermediate piece between the fluid box and the sleepers.

Il en résulte que le montage de l'échangeur de chaleur est beaucoup plus simple. En outre, la rigidité de l'échangeur de chaleur est accrue du fait que les embases et les nervu­res sont monobloc avec la boîte à fluide.As a result, the assembly of the heat exchanger is much simpler. In addition, the rigidity of the heat exchanger is increased due to the fact that the bases and the ribs are integral with the fluid box.

Dans une forme de réalisation préférée de l'invention, l'em­base s'étend parallèlement aux tubes et est reliée à boî­te à fluide par deux nervures parallèles. Avantageusement, ces nervures ont la forme d'un triangle rectangle.In a preferred embodiment of the invention, the base extends parallel to the tubes and is connected to the fluid box by two parallel ribs. Advantageously, these ribs have the shape of a right triangle.

L'invention s'applique à tout type de boîte à fluide en ma­tière plastique, notamment à celles comportant une paroi tubulaire dont une portion forme collecteur. Dans ce type de boîte à fluide, l'une des extrémités de la paroi tubulai­re, qui forme fond, est venue de moulage, tandis que l'autre extrémité est ouverte pour recevoir un couvercle formant fond.The invention applies to any type of plastic fluid box, in particular to those comprising a tubular wall including a manifold-shaped portion. In this type of fluid box, one end of the tubular wall, which forms the bottom, is molded, while the other end is open to receive a bottom cover.

L'invention s'applique également aux boîtes à fluide dans lesquelles les deux fonds d'extrémités sont venus de moulage et dans lesquelles le collecteur est constitué par une autre pièce en matière plastique qui est rapportée et fixée, par exemple par soudage, sur le reste de la boîte à fluide. L'invention peut également s'appliquer à des boîtes à fluide en une seule section ou en deux sections.The invention also applies to fluid boxes in which the two end bottoms have come from molding and in which the collector consists of another piece of plastic material which is attached and fixed, for example by welding, to the rest of the fluid box. The invention can also be applied to fluid boxes in a single section or in two sections.

Avantageusement, les deux extrémités de chaque boîte à flui­de sont constituées par des fonds s'étendant obliquement de façon que la longueur de la boîte à fluide soit moindre dans sa zone longitudinale opposée au collecteur que dans la zone longitudinale du collecteur, ce qui permet de dimi­nuer localement l'encombrement en largeur de l'échangeur de chaleur.Advantageously, the two ends of each fluid box consist of funds extending obliquely so that the length of the fluid box is less in its longitudinal zone opposite to the collector than in the longitudinal zone of the collector, which makes it possible to locally reduce the overall dimensions in width of the heat exchanger.

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

  • - la figure 1 est une vue de face d'un radiateur conforme à l'invention;
  • - la figure 2 est une vue en coupe, longitudinale de l'une des sections tubulaires formant la boîte à fluide supérieure du radiateur de la figure 1;
  • - la figure 3 est une vue en bout de la section tubulaire de la figure 2.
In the detailed description which follows, given by way of example, reference is made to the appended drawings, in which:
  • - Figure 1 is a front view of a radiator according to the invention;
  • - Figure 2 is a longitudinal sectional view of one of the tubular sections forming the upper fluid box of the radiator of Figure 1;
  • - Figure 3 is an end view of the tubular section of Figure 2.

Le radiateur représenté à la figure 1 présente, vu de face selon la figure 1, la forme générale d'un rectangle dont les côtés s'étendent verticalement et horizontalement. Il comprend essentiellement un faisceau de tubes parallèles 1 dirigés verticalement et répartis régulièrement en plu­sieurs rangées sur la largeur du radiateur. Pour simplifier le dessin, deux tubes 1 seulement sont représentés à la fi­gure 1 au voisinage de l'un des bords verticaux du radia­teur. Les extrémités des tubes 1 débouchent dans des boîtes à fluide, par exemple des boîtes à eau, de forme générale tubulaire 2-1, 2-2, s'étendant respectivement selon les côtés horizontaux supérieur et inférieur du radiateur.The radiator shown in Figure 1 has, seen from the front according to Figure 1, the general shape of a rectangle whose sides extend vertically and horizontally. It essentially comprises a bundle of parallel tubes 1 directed vertically and regularly distributed in several rows over the width of the radiator. To simplify the drawing, only two tubes 1 are shown in Figure 1 in the vicinity of one of the vertical edges of the radiator. The ends of the tubes 1 open into fluid boxes, for example water boxes, of generally tubular shape 2-1, 2-2, extending respectively along the upper and lower horizontal sides of the radiator.

Chacune des boîtes à fluide est, dans l'exemple, formée de deux sections tubulaires 20 moulées en matière plastique et assemblées entre elles par soudage. Chaque section tubu­laire 20 qui est moulée en une seule pièce présente, comme le montrent les figures 2 et 3, une paroi tubulaire 21, un fond 22 fermant l'une des extrémités de la paroi 21, une embase d'assemblage 23 s'étendant parallèlement aux tubes 1 et deux nervures 24 reliant l'embase 23 à la paroi tubu­laire 21. Ces deux nervures sont parallèles et ont la forme générale d'un triangle rectangle (figure 2).Each of the fluid boxes is, in the example, formed of two tubular sections 20 molded from plastic and assembled together by welding. Each tubular section 20 which is molded in one piece has, as shown in Figures 2 and 3, a tubular wall 21, a bottom 22 closing one end of the wall 21, an assembly base 23 extending parallel to the tubes 1 and two ribs 24 connecting the base 23 to the tubular wall 21. These two ribs are parallel and have the shape general of a right triangle (figure 2).

L'extrémité 25, opposée au fond 22, de la paroi tubulaire est ouverte. Deux sections 20 sont soudées l'une à l'autre par friction par leurs faces extrêmes 26 entourant l'ouver­ture 25, réalisant ainsi une boîte à fluide tubulaire fermée à ses deux extrémités par les fonds obliques 22.The end 25, opposite the bottom 22, of the tubular wall is open. Two sections 20 are welded to each other by friction through their end faces 26 surrounding the opening 25, thus producing a tubular fluid box closed at its two ends by the oblique bottoms 22.

La paroi tubulaire 21 de chaque boîte à fluide comprend une portion de paroi plane 27 formant collecteur, traversée de façon étanche aux liquides par les extrémités des tubes 1 de manière connue en soi. Les fonds obliques 22 sont orien­tés de telle sorte que la longueur de la boîte à fluide, c'est-à-dire la largeur du radiateur, va en diminuant depuis le plan du collecteur vers la partie opposée à celui-ci de la paroi tubulaire 21, c'est-à-dire vers l'extrémité supé­rieure ou inférieure du radiateur. Les angles de ceux-ci sont donc chanfreinés, ce qui facilite son logement dans la carrosserie du véhicule. Les embases 23 des sections tu­bulaires 20 servant à l'assemblage de celles-ci à des tra­verses profilées 3 s'étendant selon les côtés verticaux du radiateur. Chaque traverse 3 comprend un dos 30 formant la face latérale correspondante du radiateur et deux ailes 31 s'étendant selon les faces principales de celui-ci. Les tra­verses 3 servent à renforcer la structure du radiateur et à monter celui-ci sur le véhicule par l'intermédiaire de pattes 41 et 42 qui y sont fixées.The tubular wall 21 of each fluid box comprises a flat wall portion 27 forming a manifold, crossed in a liquid-tight manner by the ends of the tubes 1 in a manner known per se. The oblique bottoms 22 are oriented so that the length of the fluid box, that is to say the width of the radiator, decreases from the plane of the collector towards the part opposite the latter of the tubular wall. 21, that is to say towards the upper or lower end of the radiator. The angles of these are therefore chamfered, which facilitates its accommodation in the vehicle body. The bases 23 of the tubular sections 20 serving to assemble them to profiled crosspieces 3 extending along the vertical sides of the radiator. Each cross member 3 comprises a back 30 forming the corresponding lateral face of the radiator and two wings 31 extending along the main faces thereof. The crosspieces 3 serve to reinforce the structure of the radiator and to mount it on the vehicle by means of lugs 41 and 42 which are fixed to it.

La face interne des dos 30 s'appuie sur des nervures hori­zontales 50 et des nervures verticales 51 appartenant à l'embase 23 et définissant, par leurs sommets, un plan d'appui 52 pour les traverses (figures 2 et 3). Le plan d'appui 52 est perpendiculaire à la direction longitudinale des boîtes à fluide, donc parallèle à la direction longitudinale des tubes 1. Chaque embase 23 est traversée par quatre trous 53 entourés de bossages 54 qui se terminent dans le plan d'appui 52. Ces trous 53 et des trous correspondants ménagés dans le dos des traverses permettent l'assemblage de ces dernières aux boîtes à fluide par des éléments d'assemblage 6 tels que des rivets ou vis par exemple.The internal face of the backs 30 rests on horizontal ribs 50 and vertical ribs 51 belonging to the base 23 and defining, by their vertices, a support plane 52 for the crosspieces (FIGS. 2 and 3). The support plane 52 is perpendicular to the longitudinal direction fluid boxes, therefore parallel to the longitudinal direction of the tubes 1. Each base 23 is crossed by four holes 53 surrounded by bosses 54 which terminate in the support plane 52. These holes 53 and corresponding holes made in the back crosspieces allow the assembly of the latter to the fluid boxes by assembly elements 6 such as rivets or screws for example.

Pour permettre au radiateur d'être chanfreiné par les fonds obliques 22, chaque embase 23 est décalée, par rapport à la paroi tubulaire 21, en direction du plan transversal mé­dian M des tubes 1 (figure 1). Plus précisément, l'embase se trouve du côté du plan M par rapport au plan du collec­teur 27. Des nervures 24 s'étendant sensiblement selon les deux faces principales du radiateur respectivement assurent une liaison rigide de l'embase à la paroi tubulaire 21. Cha­que nervure 24 a la forme d'un triangle rectangle dont un côté de l'angle droit est confondu avec un côté vertical de l'embase et dont l'autre correspond à une partie du côté longitudinal du collecteur. L'hypoténuse du triangle rectan­gle forme un côté libre de la nervure.To allow the radiator to be chamfered by the oblique bottoms 22, each base 23 is offset, relative to the tubular wall 21, in the direction of the median transverse plane M of the tubes 1 (Figure 1). More specifically, the base is on the side of the plane M with respect to the plane of the manifold 27. Ribs 24 extending substantially along the two main faces of the radiator respectively ensure a rigid connection of the base to the tubular wall 21. Each rib 24 has the shape of a right triangle of which one side of the right angle coincides with a vertical side of the base and the other of which corresponds to a part of the longitudinal side of the manifold. The hypotenuse of the right triangle forms a free side of the rib.

Les boîtes à fluide 2-1 et 2-2 sont liées l'une à l'autre dans leur région médiane par deux tirants 55 traversant des trous ménagés dans des bossages 56 prévus sur les parois tubulaires des sections tubulaires 20. Ces tirants 55 sup­portent les efforts longitudinaux dus à la tendance à la flexion des boîtes à fluide lorsque le radiateur est plein de fluide sous pression, et évitent ainsi que des forces d'arrachement s'exercent sur les soudures des extrémités 25 des sections tubulaires. L'une des extrémités 57 de cha­que tirant est repliée à angle droit et s'appui sur un bos­sage 56, tandis que l'extrémité opposée 58 est filetée et coopère avec un écrou 59 qui est serré sur un autre bossage 56.The fluid boxes 2-1 and 2-2 are linked to each other in their central region by two tie rods 55 passing through holes made in bosses 56 provided on the tubular walls of the tubular sections 20. These tie rods 55 support the longitudinal forces due to the tendency of the fluid boxes to bend when the radiator is full of pressurized fluid, and thus prevent tearing forces being exerted on the welds of the ends of the tubular sections. One of the ends 57 of each tie rod is folded at a right angle and rests on a boss 56, while the opposite end 58 is threaded and cooperates with a nut 59 which is tightened on another boss 56.

Bien que l'invention ait été décrite en référence particu­ lière à un échangeur de chaleur comportant deux boîtes à fluide formées chacune de deux sections tubulaires reliées bout à bout, elle s'applique également à des échangeurs de chaleur dont chaque boîte à fluide est formée d'une seule section, tubulaire ou non.Although the invention has been described with particular reference linked to a heat exchanger comprising two fluid boxes each formed from two tubular sections connected end to end, it also applies to heat exchangers in which each fluid box is formed from a single section, tubular or not.

Elle s'applique également à des échangeurs de chaleur com­portant une ou deux traverses.It also applies to heat exchangers comprising one or two crosspieces.

Claims (8)

1. Echangeur de chaleur du type comprenant un faisceau de tubes parallèles (1) et, à au moins une extrémité de celui-­ci, une boîte à fluide (2-1, 2-2), en matière plastique, les extrémités des tubes (1) pénétrant dans la boîte à flui­de de façon étanche aux liquides par des trous ménagés dans une paroi de la boîte à fluide formant collecteur (27), et comprenant en outre au moins une traverse de montage (3) s'étendant parallèlement aux tubes et fixée à une extrémité de la boîte à fluide en une région décalée,dans la direction longitudinale des tubes et vers le plan transversal médian (M) de ceux-ci, par rapport au collecteur, caractérisé en ce que la traverse est assemblée sur une embase (23) venue de moulage avec la boîte à fluide et reliée par des nervures (24) à la boîte à fluide.1. Heat exchanger of the type comprising a bundle of parallel tubes (1) and, at at least one end thereof, a fluid box (2-1, 2-2), made of plastic, the ends of the tubes (1) penetrating into the fluid box in a liquid-tight manner through holes made in a wall of the fluid box forming a manifold (27), and further comprising at least one mounting crosspiece (3) extending parallel to the tubes and fixed to one end of the fluid box in an offset region, in the longitudinal direction of the tubes and towards the median transverse plane (M) of the latter, relative to the manifold, characterized in that the cross member is assembled on a base (23) molded with the fluid box and connected by ribs (24) to the fluid box. 2. Echangeur de chaleur selon la revendication 1, caractéri­sé en ce que l'embase (23) s'étend parallèlement aux tu­bes (1).2. Heat exchanger according to claim 1, characterized in that the base (23) extends parallel to the tubes (1). 3. Echangeur de chaleur selon l'une des revendications 1 et 2, caractérisé en ce que l'embase (23) est reliée à la boîte à fluide (2-1, 2-2) par deux nervures parallèles (24).3. Heat exchanger according to one of claims 1 and 2, characterized in that the base (23) is connected to the fluid box (2-1, 2-2) by two parallel ribs (24). 4. Echangeur de chaleur selon l'une des revendications 1 à 3, caractérisé en ce que les nervures (24) ont la forme d'un triangle rectangle.4. Heat exchanger according to one of claims 1 to 3, characterized in that the ribs (24) have the shape of a right triangle. 5. Echangeur de chaleur selon l'une des revendications 1 à 4, dans lequel la boîte à fluide (2-1, 2-2) comporte une paroi tubulaire (21) dont une portion forme collecteur (27), caractérisé en ce que les nervures (24) sont reliées à ladi­te paroi tubulaire.5. Heat exchanger according to one of claims 1 to 4, in which the fluid box (2-1, 2-2) comprises a tubular wall (21) including a manifold portion (27), characterized in that the ribs (24) are connected to said tubular wall. 6. Echangeur de chaleur selon l'une des revendications précédentes, caractérisé en ce que la boîte à fluide comporte deux sections tubulaires (20), dont au moins une extrémité (25) est ouverte, assemblées par soudage entre elles.6. Heat exchanger according to one of the preceding claims, characterized in that the fluid box comprises two tubular sections (20), at least one end (25) of which is open, assembled by welding together. 7. Echangeur de chaleur selon l'une des revendications 1 à 4, caractérisé en ce que les deux extrémités de la boîte à fluide sont fermées par des fonds (22) s'étendant oblique­ment de façon que la longueur de la boîte à fluide soit moindre dans sa zone longitudinale opposée au collecteur (27) que dans la zone longitudinale dudit collecteur.7. Heat exchanger according to one of claims 1 to 4, characterized in that the two ends of the fluid box are closed by bottoms (22) extending obliquely so that the length of the fluid box is less in its longitudinal zone opposite the collector (27) than in the longitudinal zone of said collector. 8. Echangeur de chaleur comportant deux boîtes à fluide, caractérisé en ce que chaque boîte à fluide comporte des embases selon l'une des revendications 1 à 5.8. Heat exchanger comprising two fluid boxes, characterized in that each fluid box comprises bases according to one of claims 1 to 5.
EP19870401736 1986-08-07 1987-07-24 Heat exchanger having a tube bundle and plastic header boxes Expired - Lifetime EP0256913B2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8611471 1986-08-07
FR8611471A FR2602581B1 (en) 1986-08-07 1986-08-07 HEAT EXCHANGER WITH PLASTIC TUBE AND FLUID BOXES

Publications (3)

Publication Number Publication Date
EP0256913A1 true EP0256913A1 (en) 1988-02-24
EP0256913B1 EP0256913B1 (en) 1990-04-04
EP0256913B2 EP0256913B2 (en) 1994-06-15

Family

ID=9338131

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EP19870401736 Expired - Lifetime EP0256913B2 (en) 1986-08-07 1987-07-24 Heat exchanger having a tube bundle and plastic header boxes

Country Status (4)

Country Link
EP (1) EP0256913B2 (en)
DE (1) DE3762163D1 (en)
ES (1) ES2013769T5 (en)
FR (1) FR2602581B1 (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0504034A1 (en) * 1991-03-12 1992-09-16 Valeo Thermique Moteur Heat exchanger with connected water boxes for cars
EP0567411A1 (en) * 1992-04-24 1993-10-27 Valeo Thermique Moteur Traverse for mounting a vehicle radiator
US5257662A (en) * 1992-03-27 1993-11-02 The Allen Group Inc. Heat exchanger assembly
JP2000283689A (en) * 1999-03-30 2000-10-13 Denso Corp Heat exchanger
ES2153721A1 (en) * 1997-08-07 2001-03-01 Frape Behr Sa Structure for adapting a radiator to a housing cavity
US7198097B2 (en) * 2003-12-18 2007-04-03 Valeo, Inc. Angled ribs for heat exchanger tanks
CN108759543A (en) * 2018-06-14 2018-11-06 黄山科能汽车散热器有限公司 A kind of vehicle radiator

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000022366A1 (en) 1998-10-09 2000-04-20 S.C. Romradiatoare S.A. High efficiency heat exchanger with oval tubes
CN104567513A (en) * 2014-12-26 2015-04-29 无锡博利达换热器有限公司 Water cooler

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2472734A1 (en) * 1979-12-29 1981-07-03 Sueddeutsche Kuehler Behr Motor vehicle heat exchanger - has reinforcing section for tube base, connected via lugs to water tank
GB2078361A (en) * 1980-06-24 1982-01-06 Delanair Ltd Heat exchangers and heat exchanger headers
GB2090958A (en) * 1980-11-24 1982-07-21 Chausson Usines Sa Heat exchangers
EP0115795A1 (en) * 1983-02-05 1984-08-15 Behr GmbH & Co. Water/air cooler for water cooled internal combustion engines, especially for commercial vehicles
EP0170952A1 (en) * 1984-08-04 1986-02-12 Behr GmbH & Co. Water/air radiator for a water-cooled combustion engine
DE8629407U1 (en) * 1985-11-04 1987-01-22 Süddeutsche Kühlerfabrik Julius Fr. Behr GmbH & Co KG, 7000 Stuttgart Radiators for motor vehicles

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2472734A1 (en) * 1979-12-29 1981-07-03 Sueddeutsche Kuehler Behr Motor vehicle heat exchanger - has reinforcing section for tube base, connected via lugs to water tank
GB2078361A (en) * 1980-06-24 1982-01-06 Delanair Ltd Heat exchangers and heat exchanger headers
GB2090958A (en) * 1980-11-24 1982-07-21 Chausson Usines Sa Heat exchangers
EP0115795A1 (en) * 1983-02-05 1984-08-15 Behr GmbH & Co. Water/air cooler for water cooled internal combustion engines, especially for commercial vehicles
EP0170952A1 (en) * 1984-08-04 1986-02-12 Behr GmbH & Co. Water/air radiator for a water-cooled combustion engine
DE8629407U1 (en) * 1985-11-04 1987-01-22 Süddeutsche Kühlerfabrik Julius Fr. Behr GmbH & Co KG, 7000 Stuttgart Radiators for motor vehicles

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0504034A1 (en) * 1991-03-12 1992-09-16 Valeo Thermique Moteur Heat exchanger with connected water boxes for cars
FR2674014A1 (en) * 1991-03-12 1992-09-18 Valeo Thermique Moteur Sa HEAT EXCHANGER WITH CONNECTED WATER BOXES FOR MOTOR VEHICLES.
US5257662A (en) * 1992-03-27 1993-11-02 The Allen Group Inc. Heat exchanger assembly
US5373896A (en) * 1992-03-27 1994-12-20 The Allen Group Heat exchanger assembly
EP0567411A1 (en) * 1992-04-24 1993-10-27 Valeo Thermique Moteur Traverse for mounting a vehicle radiator
FR2690514A1 (en) * 1992-04-24 1993-10-29 Valeo Thermique Moteur Sa Cross member for mounting a vehicle radiator.
ES2153721A1 (en) * 1997-08-07 2001-03-01 Frape Behr Sa Structure for adapting a radiator to a housing cavity
JP2000283689A (en) * 1999-03-30 2000-10-13 Denso Corp Heat exchanger
US7198097B2 (en) * 2003-12-18 2007-04-03 Valeo, Inc. Angled ribs for heat exchanger tanks
CN108759543A (en) * 2018-06-14 2018-11-06 黄山科能汽车散热器有限公司 A kind of vehicle radiator

Also Published As

Publication number Publication date
EP0256913B2 (en) 1994-06-15
FR2602581B1 (en) 1989-07-21
ES2013769T5 (en) 1995-08-16
DE3762163D1 (en) 1990-05-10
ES2013769B3 (en) 1990-06-01
EP0256913B1 (en) 1990-04-04
FR2602581A1 (en) 1988-02-12

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