WO2002077559A1 - Heat exchanger with side flanges, in particular for motor vehicle - Google Patents

Heat exchanger with side flanges, in particular for motor vehicle Download PDF

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Publication number
WO2002077559A1
WO2002077559A1 PCT/FR2002/001001 FR0201001W WO02077559A1 WO 2002077559 A1 WO2002077559 A1 WO 2002077559A1 FR 0201001 W FR0201001 W FR 0201001W WO 02077559 A1 WO02077559 A1 WO 02077559A1
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WO
WIPO (PCT)
Prior art keywords
heat exchanger
crimping
plate
flange
exchanger according
Prior art date
Application number
PCT/FR2002/001001
Other languages
French (fr)
Inventor
Jean-Louis Laveran
Original Assignee
Valeo Thermique Moteur
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Valeo Thermique Moteur filed Critical Valeo Thermique Moteur
Priority to EP02722357A priority Critical patent/EP1373820A1/en
Publication of WO2002077559A1 publication Critical patent/WO2002077559A1/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
    • 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
    • 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
    • F28F2275/00—Fastening; Joining
    • F28F2275/12—Fastening; Joining by methods involving deformation of the elements
    • F28F2275/122—Fastening; Joining by methods involving deformation of the elements by crimping, caulking or clinching

Definitions

  • the invention relates to heat exchangers, in particular for a motor vehicle.
  • a heat exchanger of the type comprising a manifold and a manifold plate mechanically assembled by crimping teeth from the manifold plate and bent against a peripheral heel of the manifold, and extended side cheeks at each end by a flange which is assembled to the manifold and / or to the manifold plate.
  • heat exchangers which typically include a first manifold / manifold assembly at one end and a second manifold / manifold assembly at another end. These two sets are placed at the two ends of a heat exchanger body .
  • heat which consists of a set of tubes and fins, which can be flat fins or even corrugated fins.
  • each manifold is made by molding a plastic material and it has an open face, generally of rectangular shape, which is delimited by the peripheral heel.
  • Each manifold plate has holes into which the tubes of the bundle open and it delimits a peripheral groove which receives the peripheral heel of the manifold box with the interposition of a seal. The latter is compressed by the effect of the crimping teeth.
  • the side cheeks are interposed between the two assemblies to ensure the cohesion of the heat exchanger and allow, in addition, the attachment of the heat exchanger on the vehicle structure or even the attachment of accessories on the heat exchanger.
  • the flange of the lateral cheek is most often brazed against the collecting plate, in a region around the latter which carries the crimping teeth.
  • a heat exchanger of this type can be used in particular to constitute a radiator for cooling the engine of a motor vehicle.
  • the invention particularly aims to overcome the aforementioned drawbacks.
  • the invention provides a heat exchanger of the type defined above, in which the flange of the lateral cheek is provided with crimping lugs which cover the crimping teeth of the collector plate.
  • the crimping teeth of the collector plate are covered by the crimping tabs of the flange, which provides a double thickness of material, and strengthens the crimping teeth.
  • these teeth are " reinforced externally and no longer risk constituting rupture zones, even under limiting conditions of use of the heat exchanger.
  • the lateral cheek usually comprises a core bordered by two longitudinal wings, but only in the central part of the lateral cheek, as taught by the publication FR-A-2 558 246.
  • the lateral cheek comprises a core bordered by two longitudinal wings which extend up to the flange and in the immediate vicinity of the crimping lugs of said lateral cheek.
  • a lateral cheek reinforcement is thus provided, especially in the region of the flange, that is to say in the region which is extended by the crimp tabs.
  • each of the longitudinal wings is folded substantially at right angles to the core and is directed towards the outside of the heat exchanger.
  • each of the longitudinal wings is folded substantially at right angles over its entire length, including in the region of the flange.
  • each of the longitudinal wings is folded substantially at right angles over its entire length, except in the region of the flange where it has one end folded back against the core. The presence of this folded end reduces the size of the heat exchanger.
  • the collector plate comprises at least one locking tooth which extends between two adjacent crimping teeth, is folded outwards to pass between two crimping tabs adjacent to the lateral cheek and is folded against the soul of the side cheek.
  • This locking tooth further contributes to the strengthening of the assembly, in the region of the connection between the lateral cheek and the manifold box / manifold plate assembly.
  • the crimping lugs of the lateral cheek can only be crimped mechanically on the crimping teeth of the collector plate.
  • these crimping lugs can be mechanically crimped and brazed on the crimping teeth. This improves the connection between the cheek and the collector plate.
  • the invention is particularly applicable to a heat exchanger heat comprising two opposite lateral cheeks connected, on the one hand, to a first manifold plate / manifold assembly and, on the other hand, to a second manifold plate / manifold assembly. 5
  • FIG. 1 is an elevational view, partially broken away, of part of a heat exchanger according to
  • FIG. 2 is a partial perspective view of a part of the cheek, the crimping tabs cover the teeth
  • Figure 3 is a perspective view, similar to Figure 2, in an alternative embodiment.
  • the heat exchanger 10 shown in Figure 1 comprises a body 12 formed of a multiplicity of tubes 14 between which are disposed spacers 16 of corrugated shape.
  • the tubes 14 serve for the circulation of a cooling fluid and the spacers 16, in thermal contact with the tubes 14, act as heat dissipation fins.
  • the tubes 14 open, by their respective ends 18, 0 into a collecting plate 20 of generally rectangular shape, made of a metallic material, for example aluminum alloy.
  • the collector plate 20 is delimited by a peripheral border 22 delimiting a peripheral groove in which is housed a peripheral heel 24 forming part of a box collector 26.
  • This collector box is produced by molding a plastic material and it comprises a bottom wall 28 which delimits an interior compartment 30 and which comprises an open face delimited by the heel 24 mentioned above.
  • the collector plate 20 and the collector box 26 are joined in a leaktight manner by means of a compressible seal 32 which is housed in the bottom of the groove delimited by the peripheral edge 22.
  • the heel 24 has a support rim 34 of generally rectangular shape against which press crimping teeth 36, also called slots, formed at the end of the edge 22. These teeth 36 are folded by crimping to exert pressure on the rim 34 of the heel to achieve compression of the joint 32 and, consequently, the seal - between the "collecting plate and the collecting box.
  • the exchanger 10 shown in Figure 1 may constitute, for example, a radiator for cooling the engine of a motor vehicle.
  • the circulation tubes 14 are then traversed by the engine coolant.
  • the body 12 is connected, at one end, to a manifold box 26 / manifold plate 20 assembly and, at the other end, to a similar assembly.
  • a manifold box 26 / manifold plate 20 assembly and, at the other end, to a similar assembly.
  • These two sets are further joined by two side cheeks 38, only one of which is shown (partially) in FIG. 1.
  • This cheek is made of a metallic material and it comprises a core 40 of generally rectangular shape, bordered by two longitudinal wings 42 which can best be seen in FIG. 2.
  • Each of the lateral cheeks 38 ends, at each end, with a flange 44 which is shaped to come into abutment against the peripheral edge 22 of the plate collecting.
  • the side cheek is made of a metallic material, advantageously an aluminum-based alloy.
  • the longitudinal wings 42 are folded back substantially at right angles to the core 40. They make it possible to stiffen and strengthen the lateral cheek 38.
  • the cheek 38 has, at each of its ends, one. flange 44 which comes into external contact against the peripheral edge 22 of the collector plate 20 ( Figures 1 and 2).
  • This flange 44 is extended by crimping lugs 46, here two in number, which are folded against two adjacent crimping teeth 36 of the collector plate.
  • the tabs 46 thus cover the two crimping teeth 36, which makes it possible to form a double thickness of material in the region where the crimping teeth 36 press on the heel 24 of the manifold.
  • the cheeks 38 are arranged in an opposite manner and come to press on the peripheral edge 22 in the regions of the "short sides" of the manifold / manifold plate assembly.
  • a reinforcing action is thus exerted which means that the crimping teeth 36 are protected and reinforced, thus preventing any risk of accidental rupture due to significant mechanical forces linked, for example, to an excess of fluid pressure and / or to excessive vibration.
  • the longitudinal wings 42 are folded substantially at right angles, and this over their entire length, including in the region of the flange 44.
  • the wings 42 have respective ends 48 which are, in fact, at the level of the flange 44 and are located in the immediate vicinity of the crimping lugs 46.
  • the wings 42 stopped at a distance from the flange and ruptures were likely to occur in this region, which is particularly exposed to significant mechanical forces.
  • Figure 3 shows an embodiment which is similar to that of Figure 2.
  • the common elements are designated by the same reference numerals.
  • each of the longitudinal wings 42 is folded substantially at right angles over its entire length, except in the region of the flange.
  • each of the wings comprises an end portion 50 which is folded down, as shown by the arrow F in FIG. 3, to bear against the core 40, in the region of the flange 44. This provides better reinforcement and , in addition, reduces the bulk due to the folding of the end regions 50.
  • the crimping lugs 46 of the lateral cheek can only be crimped mechanically on the crimping teeth 36 of the collector plate.
  • This provides increased reinforcement of the structure which allows the heat exchanger to withstand significant mechanical stress due, for example, to a significant rise in fluid pressure or high vibrations.
  • the heat exchanger is not limited to an application as a motor vehicle engine cooling radiator. It can be used for other purposes, for example in a motor vehicle air conditioning circuit.

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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 invention concerns a heat exchanger comprising a collector box (20) and a collector plate (20) mechanically assembled by crimping teeth (36) projecting from the collector plate and curved against a peripheral heel (24) of the collector box, and side flanges (38) prolonged at each end by a plate (44) which is assembled to the collector box and/or to the collector plate. Said plate is provided with crimping lugs (46) which overlap the crimping teeth (36) of the collector plate, to ensure a reinforced linkage. The inventive heat exchanger can be used in particular as a motor vehicle engine cooling radiator.

Description

Echangeur de chaleur à joues latérales, en particulier pour véhicule automobileHeat exchanger with side cheeks, in particular for a motor vehicle
L'invention se rapporte aux echangeurs de chaleur, en particulier pour véhicule automobile.The invention relates to heat exchangers, in particular for a motor vehicle.
Elle concerne plus particulièrement un echangeur de chaleur, du type comprenant une boîte collectrice et une plaque collectrice assemblées mécaniquement par des dents de sertissage issues de la plaque collectrice et recourbées contre un talon périphérique de la boîte collectrice, et des joues latérales prolongées à chaque extrémité par un flasque qui est assemblé à la boîte collectrice et/ou à la plaque collectrice.It relates more particularly to a heat exchanger, of the type comprising a manifold and a manifold plate mechanically assembled by crimping teeth from the manifold plate and bent against a peripheral heel of the manifold, and extended side cheeks at each end by a flange which is assembled to the manifold and / or to the manifold plate.
On connaît . déjà .des ._échangeurs de chaleur de . ce type qui comprennent habituellement un premier ensemble boîte collectrice/plaque collectrice à une extrémité et un deuxième ensemble boîte collectrice/plaque collectrice à une autre extrémité. Ces deux ensembles sont placés aux deux extrémités d'un corps d'echangeur de . chaleur qui est constitué d'un ensemble de tubes et d'ailettes, qui peuvent être des ailettes planes ou encore des ailettes ondulées.We know . already. heat exchangers. which typically include a first manifold / manifold assembly at one end and a second manifold / manifold assembly at another end. These two sets are placed at the two ends of a heat exchanger body . heat which consists of a set of tubes and fins, which can be flat fins or even corrugated fins.
Le plus souvent, chaque boîte collectrice est réalisée par moulage d'une matière plastique et elle comporte une face ouverte, généralement de forme rectangulaire, qui est délimitée par le talon périphérique. Chaque plaque collectrice comporte des trous dans lesquels débouchent les tubes du faisceau et elle délimite une gorge périphérique qui reçoit le talon périphérique de la boîte collectrice avec interposition d'un joint d'étanchéité. Ce dernier est comprimé par l'effet des dents de sertissage.Most often, each manifold is made by molding a plastic material and it has an open face, generally of rectangular shape, which is delimited by the peripheral heel. Each manifold plate has holes into which the tubes of the bundle open and it delimits a peripheral groove which receives the peripheral heel of the manifold box with the interposition of a seal. The latter is compressed by the effect of the crimping teeth.
Les joues latérales sont interposées entre les deux ensembles pour assurer la cohésion de l'échangeur de chaleur et permettre, en outre, la fixation de l'échangeur de chaleur sur la structure du véhicule ou bien encore la fixation d'accessoires sur l'échangeur de chaleur.The side cheeks are interposed between the two assemblies to ensure the cohesion of the heat exchanger and allow, in addition, the attachment of the heat exchanger on the vehicle structure or even the attachment of accessories on the heat exchanger.
Dans un echangeur de chaleur du type précité, le flasque de la joue latérale est le plus souvent brasé contre la plaque collectrice, dans une région du pourtour de cette dernière qui porte les dents de sertissage.In a heat exchanger of the aforementioned type, the flange of the lateral cheek is most often brazed against the collecting plate, in a region around the latter which carries the crimping teeth.
II est connu aussi, d'après FR-A-2 558 246, de former, à l'extrémité de chaque flasque, des créneaux qui sont rabattus contre le talon de la boîte collectrice. Toutefois, dans ce cas, la boîte collectrice et la plaque collectrice sont assemblées mécaniquement entre elles par des agrafes.It is also known, from FR-A-2 558 246, to form, at the end of each flange, slots which are folded against the heel of the manifold. However, in this case, the manifold and the manifold plate are mechanically assembled together by staples.
Un echangeur de chaleur de ce type peut être utilisé notamment pour constituer un radiateur de refroidissement du moteur d'un véhicule automobile.A heat exchanger of this type can be used in particular to constitute a radiator for cooling the engine of a motor vehicle.
Or, un tel echangeur de chaleur subit, en service, un certain nombre de contraintes mécaniques dues à la pression du fluide qui le traverse, mais aussi aux vibrations engendrées par le moteur du véhicule.However, such a heat exchanger undergoes, in service, a certain number of mechanical stresses due to the pressure of the fluid passing through it, but also to the vibrations generated by the vehicle engine.
II est apparu que, dans ces conditions, les dents de sertissage qui assurent l'assemblage mécanique entre la boîte collectrice et la plaque collectrice peuvent, dans des conditions limites, se déformer et conduire, à plus ou moins long terme, à une perte d'étanchéité entre la boîte collectrice et la plaque collectrice. .It appeared that, under these conditions, the crimping teeth which ensure the mechanical assembly between the manifold and the manifold plate can, under limiting conditions, deform and lead, in the more or less long term, to a loss of tightness between the manifold and the manifold plate. .
En outre, il est apparu que dans de telles conditions extrêmes, une zone de rupture pouvait se produire au niveau de la joue, latérale, dans la région du flasque, qui est située proche de la zone de brasage. L'invention a notamment pour but de surmonter les inconvénients précités.Furthermore, it appeared that under such extreme conditions, a rupture zone could occur at the level of the cheek, lateral, in the region of the flange, which is located close to the brazing zone. The invention particularly aims to overcome the aforementioned drawbacks.
Elle vise ainsi à perfectionner un echangeur de chaleur du type précité pour éviter tout risque de rupture des joues latérales et renforcer également les dents de sertissage.It thus aims to improve a heat exchanger of the aforementioned type to avoid any risk of rupture of the side cheeks and also strengthen the crimping teeth.
L'invention propose à cet effet un echangeur de chaleur du type défini précédemment, dans lequel le flasque de la joue latérale est muni de pattes de sertissage qui recouvrent les dents de sertissage de la plaque collectrice.To this end, the invention provides a heat exchanger of the type defined above, in which the flange of the lateral cheek is provided with crimping lugs which cover the crimping teeth of the collector plate.
Ainsi, les dents de sertissage de la plaque collectrice sont recouvertes par les pattes de sertissage du flasque, ce qui procure une double épaisseur de matière, et renforce les dents de sertissage. De ce fait, ces dents sont " renforcées extérieurement et ne risquent plus de constituer des zones de rupture, même dans des conditions limites d'utilisation de l'échangeur de chaleur.Thus, the crimping teeth of the collector plate are covered by the crimping tabs of the flange, which provides a double thickness of material, and strengthens the crimping teeth. As a result, these teeth are " reinforced externally and no longer risk constituting rupture zones, even under limiting conditions of use of the heat exchanger.
De surcroît, ceci permet de renforcer la liaison entre la joue latérale et l'ensemble boîte collectrice/plaque collectrice.In addition, this makes it possible to strengthen the connection between the lateral cheek and the manifold box / manifold plate assembly.
Dans un echangeur de chaleur du type précité, la joue latérale comprend habituellement une âme bordée par deux ailes longitudinales, mais seulement dans la partie centrale de la joue latérale, comme enseigné par la publication FR-A-2 558 246.In a heat exchanger of the aforementioned type, the lateral cheek usually comprises a core bordered by two longitudinal wings, but only in the central part of the lateral cheek, as taught by the publication FR-A-2 558 246.
L'invention prévoit que la joue latérale comprend une âme bordée par deux ailes longitudinales qui s'étendent jusqu'au flasque et jusqu'à proximité immédiate des pattes de sertissage de ladite joue latérale.The invention provides that the lateral cheek comprises a core bordered by two longitudinal wings which extend up to the flange and in the immediate vicinity of the crimping lugs of said lateral cheek.
On procure ainsi un renforcement de la joue latérale, spécialement dans la région du flasque, c'est-à-dire dans la région qui est prolongée par les pattes de sertissage. De préférence, chacune des ailes longitudinales est repliée sensiblement à angle droit par rapport à l'âme et est dirigée vers l'extérieur de l'échangeur de chaleur.A lateral cheek reinforcement is thus provided, especially in the region of the flange, that is to say in the region which is extended by the crimp tabs. Preferably, each of the longitudinal wings is folded substantially at right angles to the core and is directed towards the outside of the heat exchanger.
Dans une première forme de réalisation de l'invention, chacune des ailes longitudinales est repliée sensiblement à angle droit sur toute sa longueur, y compris dans la région du flasque.In a first embodiment of the invention, each of the longitudinal wings is folded substantially at right angles over its entire length, including in the region of the flange.
Dans une autre forme de réalisation de l'invention, chacune des ailes longitudinales est repliée sensiblement à angle droit sur toute sa longueur, sauf dans la région du flasque où elle présente une extrémité rabattue contre l'âme. La présence de cette extrémité rabattue permet de diminuer l'encombrement de 1 ' echangeur.In another embodiment of the invention, each of the longitudinal wings is folded substantially at right angles over its entire length, except in the region of the flange where it has one end folded back against the core. The presence of this folded end reduces the size of the heat exchanger.
Selon une autre caractéristique de l'invention, la plaque collectrice comprend au moins une dent de verrouillage qui s'étend entre deux dents de sertissage voisines, est repliée vers l'extérieur pour passer entre deux pattes de sertissage voisines de la joue latérale et est rabattue contre l'âme de la joue latérale.According to another characteristic of the invention, the collector plate comprises at least one locking tooth which extends between two adjacent crimping teeth, is folded outwards to pass between two crimping tabs adjacent to the lateral cheek and is folded against the soul of the side cheek.
La présence de cette dent de verrouillage contribue encore au renforcement de l'ensemble, dans la région de la liaison entre la joue latérale et l'ensemble boîte collectrice/plaque collectrice.The presence of this locking tooth further contributes to the strengthening of the assembly, in the region of the connection between the lateral cheek and the manifold box / manifold plate assembly.
Conformément à l'invention, les pattes de sertissage de la joue latérale peuvent être seulement serties mécaniquement sur les dents de sertissage de la plaque collectrice.According to the invention, the crimping lugs of the lateral cheek can only be crimped mechanically on the crimping teeth of the collector plate.
En variante, ces pattes de sertissage peuvent être serties mécaniquement et brasées sur les dents de sertissage. Cela améliore la liaison entre la joue et la plaque collectrice.As a variant, these crimping lugs can be mechanically crimped and brazed on the crimping teeth. This improves the connection between the cheek and the collector plate.
L'invention s'applique tout particulièrement à un echangeur de chaleur comprenant deux joues latérales opposées reliées, d'une part, à un premier ensemble plaque collectrice/boîte collectrice et, d'autre part, à un deuxième ensemble plaque collectrice/boîte collectrice. 5The invention is particularly applicable to a heat exchanger heat comprising two opposite lateral cheeks connected, on the one hand, to a first manifold plate / manifold assembly and, on the other hand, to a second manifold plate / manifold assembly. 5
Dans la description qui suit, faite seulement à titre d'exemple, on se réfère aux dessins annexés, sur lesquels :In the description which follows, given solely by way of example, reference is made to the appended drawings, in which:
- la Figure 1 est une vue en élévation, avec arrachement 10 partiel, d'une partie d'un echangeur de chaleur selon- Figure 1 is an elevational view, partially broken away, of part of a heat exchanger according to
1 ' invention ;The invention;
- la Figure 2 est une vue partielle en perspective d'une partie de la joue dont les pattes de sertissage recouvrent les dents- Figure 2 is a partial perspective view of a part of the cheek, the crimping tabs cover the teeth
15. de sertissage de la plaque collectrice ; et15. crimping the collector plate; and
- la Figure 3 est une vue en perspective, analogue à la Figure 2, dans une variante de réalisation.- Figure 3 is a perspective view, similar to Figure 2, in an alternative embodiment.
0 L'échangeur de chaleur 10 représenté à la Figure 1 comprend un corps 12 formé d'une multiplicité de tubes 14 entre lesquels sont disposés des intercalaires 16 de forme ondulée.0 The heat exchanger 10 shown in Figure 1 comprises a body 12 formed of a multiplicity of tubes 14 between which are disposed spacers 16 of corrugated shape.
Les tubes 14 servent à la circulation d'un fluide de 5 refroidissement et les intercalaires 16, en contact thermique avec les tubes 14, font office d'ailettes de dissipation de chaleur.The tubes 14 serve for the circulation of a cooling fluid and the spacers 16, in thermal contact with the tubes 14, act as heat dissipation fins.
Les tubes 14 débouchent, par leurs extrémités respectives 18, 0 dans une plaque collectrice 20 de forme générale rectangulaire, réalisée en une matière métallique, par exemple en alliage d'aluminium.The tubes 14 open, by their respective ends 18, 0 into a collecting plate 20 of generally rectangular shape, made of a metallic material, for example aluminum alloy.
La plaque collectrice 20 est délimitée par une bordure 5 périphérique 22 délimitant une gorge périphérique dans laquelle est logé un talon périphérique 24 faisant partie d'une boîte collectrice 26. Cette boîte collectrice est réalisée par moulage d'une matière plastique et elle comprend une paroi de fond 28 qui délimite un compartiment intérieur 30 et qui comporte une face ouverte délimitée par le talon 24 précité. La plaque collectrice 20 et la boîte collectrice 26 sont réunies de manière étanche par l'intermédiaire d'un joint compressible 32 qui est logé dans le fond de la gorge délimitée par la bordure périphérique 22.The collector plate 20 is delimited by a peripheral border 22 delimiting a peripheral groove in which is housed a peripheral heel 24 forming part of a box collector 26. This collector box is produced by molding a plastic material and it comprises a bottom wall 28 which delimits an interior compartment 30 and which comprises an open face delimited by the heel 24 mentioned above. The collector plate 20 and the collector box 26 are joined in a leaktight manner by means of a compressible seal 32 which is housed in the bottom of the groove delimited by the peripheral edge 22.
Le talon 24 comporte un rebord d'appui 34 de forme générale rectangulaire contre lequel viennent appuyer des dents de sertissage 36, encore appelées créneaux, formées à l'extrémité de la bordure 22. Ces dents 36 sont repliées par sertissage pour exercer une pression sur le rebord 34 du talon pour réaliser la compression du joint 32 et, par conséquent, l'étanchéité - entre la "plaque collectrice et la boîte collectrice.The heel 24 has a support rim 34 of generally rectangular shape against which press crimping teeth 36, also called slots, formed at the end of the edge 22. These teeth 36 are folded by crimping to exert pressure on the rim 34 of the heel to achieve compression of the joint 32 and, consequently, the seal - between the "collecting plate and the collecting box.
L'échangeur 10 représenté sur la Figure 1 peut constituer, par exemple, un radiateur de refroidissement du moteur d'un véhicule automobile. Les tubes de circulation 14 sont alors parcourus par le fluide de refroidissement du moteur.The exchanger 10 shown in Figure 1 may constitute, for example, a radiator for cooling the engine of a motor vehicle. The circulation tubes 14 are then traversed by the engine coolant.
Habituellement, dans un tel echangeur de chaleur, le corps 12 est relié, à une extrémité, à un ensemble boîte collectrice 26/plaque collectrice 20 et, à l'autre extrémité, à un ensemble analogue. Ces deux ensembles sont réunis en outre par deux joues latérales 38 dont une seule est représentée (partiellement) sur la Figure 1.Usually, in such a heat exchanger, the body 12 is connected, at one end, to a manifold box 26 / manifold plate 20 assembly and, at the other end, to a similar assembly. These two sets are further joined by two side cheeks 38, only one of which is shown (partially) in FIG. 1.
Cette joue est réalisée en une matière métallique et elle comprend une âme 40 de forme générale rectangulaire, bordée par deux ailes longitudinales 42 que l'on voit mieux sur la Figure 2. Chacune des joues latérales 38 se termine, à chaque extrémité, par un flasque 44 qui est conformé pour venir en appui contre la bordure périphérique 22 de la plaque collectrice. La joue latérale est réalisée en une matière métallique, avantageusement un alliage à base d'aluminium. Les ailes longitudinales 42 sont repliées sensiblement à angle droit par rapport à l'âme 40. Elles permettent de rigidifier et renforcer la joue latérale 38.This cheek is made of a metallic material and it comprises a core 40 of generally rectangular shape, bordered by two longitudinal wings 42 which can best be seen in FIG. 2. Each of the lateral cheeks 38 ends, at each end, with a flange 44 which is shaped to come into abutment against the peripheral edge 22 of the plate collecting. The side cheek is made of a metallic material, advantageously an aluminum-based alloy. The longitudinal wings 42 are folded back substantially at right angles to the core 40. They make it possible to stiffen and strengthen the lateral cheek 38.
La joue 38 comporte, à chacune de ses extrémités, un. flasque 44 qui vient en appui extérieur contre la bordure périphérique 22 de la plaque collectrice 20 (Figures 1 et 2 ) . Ce flasque 44 se prolonge par des pattes de sertissage 46, ici au nombre de deux, qui sont repliées contre deux dents de sertissage voisines 36 de la plaque collectrice. Les pattes 46 viennent ainsi recouvrir les deux dents de sertissage 36, ce qui permet de former une double épaisseur de matière dans la région où les dents de sertissage 36 viennent appuyer sur le talon 24 de la boîte collectrice.The cheek 38 has, at each of its ends, one. flange 44 which comes into external contact against the peripheral edge 22 of the collector plate 20 (Figures 1 and 2). This flange 44 is extended by crimping lugs 46, here two in number, which are folded against two adjacent crimping teeth 36 of the collector plate. The tabs 46 thus cover the two crimping teeth 36, which makes it possible to form a double thickness of material in the region where the crimping teeth 36 press on the heel 24 of the manifold.
Les joues 38 sont disposées de manière opposée et viennent appuyer sur la bordure périphérique 22 dans les régions des "petits côtés" de l'ensemble boîte collectrice/plaque collectrice.The cheeks 38 are arranged in an opposite manner and come to press on the peripheral edge 22 in the regions of the "short sides" of the manifold / manifold plate assembly.
On exerce ainsi une action de renforcement qui fait que les dents de sertissage 36 sont protégées et renforcées, empêchant ainsi tout risque de rupture accidentelle due à des efforts mécaniques importants liés, par exemple, à un excès de pression de fluide et/ou à des vibrations excessives.A reinforcing action is thus exerted which means that the crimping teeth 36 are protected and reinforced, thus preventing any risk of accidental rupture due to significant mechanical forces linked, for example, to an excess of fluid pressure and / or to excessive vibration.
Par ailleurs, comme on peut le voir sur les Figures 1 et 2, les ailes longitudinales 42 sont repliées sensiblement à angle droit, et cela sur toute leur longueur, y compris dans la région du flasque 44. Les ailes 42 ont des extrémités respectives 48 qui se situent, en effet, au niveau du flasque 44 et sont situées à proximité immédiate des pattes de sertissage 46. Dans la technique antérieure, les ailes 42 s'arrêtaient à distance du flasque et des ruptures risquaient de se produire dans cette région, qui est particulièrement exposée à des efforts mécaniques importants .Furthermore, as can be seen in Figures 1 and 2, the longitudinal wings 42 are folded substantially at right angles, and this over their entire length, including in the region of the flange 44. The wings 42 have respective ends 48 which are, in fact, at the level of the flange 44 and are located in the immediate vicinity of the crimping lugs 46. In the prior art, the wings 42 stopped at a distance from the flange and ruptures were likely to occur in this region, which is particularly exposed to significant mechanical forces.
On se réfère maintenant à la Figure 3 qui montre une forme de réalisation qui s'apparente à celle de la Figure 2. Les éléments communs sont désignés par les mêmes références numériques .We now refer to Figure 3 which shows an embodiment which is similar to that of Figure 2. The common elements are designated by the same reference numerals.
La principale différence réside ici dans le fait que chacune des ailes longitudinales 42 est repliée sensiblement à angle droit sur toute sa longueur, sauf dans la région du flasque. Dans cette région, chacune des ailes comprend une partie terminale 50 qui est rabattue, comme montré par la flèche F de la Figure 3, pour venir en appui contre l'âme 40, dans la région du flasque 44. Cela procure un meilleur renforcement et, en outre, diminue l'encombrement du fait du rabattement des régions d'extrémité 50.The main difference here lies in the fact that each of the longitudinal wings 42 is folded substantially at right angles over its entire length, except in the region of the flange. In this region, each of the wings comprises an end portion 50 which is folded down, as shown by the arrow F in FIG. 3, to bear against the core 40, in the region of the flange 44. This provides better reinforcement and , in addition, reduces the bulk due to the folding of the end regions 50.
Une autre différence, par rapport à la forme de réalisation de la Figure 2, réside dans la présence d'une dent de verrouillage 52 qui est issue de la plaque collectrice 20 et qui es disposée entre deux dents de sertissage voisines 36. Toutefois, cette dent de verrouillage 52 est repliée vers l'extérieur pour passer entre les deux pattes de sertissage voisines 46 et est ensuite rabattue contre l'âme 50. Ceci garantit un renforcement supplémentaire de la liaison entre la plaque collectrice 20 et le flasque 44 de la joue latérale.Another difference, compared to the embodiment of FIG. 2, resides in the presence of a locking tooth 52 which comes from the collecting plate 20 and which is arranged between two adjacent crimping teeth 36. However, this locking tooth 52 is folded outwards to pass between the two adjacent crimping lugs 46 and is then folded back against the core 50. This guarantees an additional reinforcement of the connection between the collecting plate 20 and the flange 44 of the cheek lateral.
Conformément à l'invention, les pattes de sertissage 46 de la joue latérale peuvent être seulement serties mécaniquement sur les dents de sertissage 36 de la plaque collectrice.According to the invention, the crimping lugs 46 of the lateral cheek can only be crimped mechanically on the crimping teeth 36 of the collector plate.
II est possible aussi, pour renforcer davantage la liaison, de braser les pattes de sertissage 46 sur les dents de sertissage 36. Ce brasage permet d'assurer une liaison accrue dans toute la région où le flasque 44, y compris les pattes de sertissage 46, est en appui contre la bordure périphérique 22 de la plaque collectrice 20, y compris les dents de sertissage 36.It is also possible, to further strengthen the connection, to braze the crimping lugs 46 on the crimping teeth 36. This brazing makes it possible to ensure increased bonding throughout the region where the flange 44, including the crimping tabs 46, is in abutment against the peripheral edge 22 of the collector plate 20, including the crimping teeth 36.
On procure ainsi un renforcement accru de la structure qui permet à l'échangeur de chaleur de résister à des efforts mécaniques importants en raison, par exemple, d'une élévation importante de la pression du fluide ou de vibrations élevées.This provides increased reinforcement of the structure which allows the heat exchanger to withstand significant mechanical stress due, for example, to a significant rise in fluid pressure or high vibrations.
Bien entendu, l'invention n'est pas limitée aux formes de réalisation décrites précédemment à titre d'exemple et s'étend à d'autres variantes.Of course, the invention is not limited to the embodiments described above by way of example and extends to other variants.
L'échangeur de chaleur n'est pas limité à une application en tant que radiateur de refroidissement d'un moteur de véhicule automobile. Il peut être utilisé à d'autres fins, par exemple dans un circuit de climatisation de véhicule automobile. The heat exchanger is not limited to an application as a motor vehicle engine cooling radiator. It can be used for other purposes, for example in a motor vehicle air conditioning circuit.

Claims

Revendications claims
1. Echangeur de chaleur, du type comprenant une boîte collectrice (26) et une plaque collectrice (20) assemblées mécaniquement par des dents de sertissage (36) issues de la plaque collectrice et recourbées contre un talon périphérique (24) de la boîte collectrice, et des, joues latérales (38) prolongées à chaque extrémité par un flasque (44) qui est assemblé à la plaque collectrice et/ou à la boîte collectrice,1. Heat exchanger, of the type comprising a collecting box (26) and a collecting plate (20) assembled mechanically by crimping teeth (36) coming from the collecting plate and bent against a peripheral heel (24) of the collecting box , and side cheeks (38) extended at each end by a flange (44) which is assembled to the collecting plate and / or to the collecting box,
caractérisé en ce que le flasque (44) est muni de pattes de sertissage (46) qui recouvrent les dents de sertissage (36) de la plaque collectrice (20).characterized in that the flange (44) is provided with crimping lugs (46) which cover the crimping teeth (36) of the collector plate (20).
2. Echangeur de chaleur selon la revendication 1, caractérisé en ce que la joue latérale (38) comprend une âme (40) bordée par deux ailes longitudinales (42) qui s'étendent jusqu'au flasque (44) et jusqu'à proximité immédiate des pattes de sertissage (46) de ladite joue latérale.2. Heat exchanger according to claim 1, characterized in that the lateral cheek (38) comprises a core (40) bordered by two longitudinal wings (42) which extend to the flange (44) and as far as close immediate of the crimping lugs (46) of said lateral cheek.
3. Echangeur de chaleur selon la revendication 2, caractérisé en ce que chacune des ailes longitudinales (42) est repliée sensiblement à angle droit par rapport à l'âme (40) et est dirigée vers l'extérieur de l'échangeur de chaleur.3. Heat exchanger according to claim 2, characterized in that each of the longitudinal wings (42) is folded substantially at right angles to the core (40) and is directed towards the outside of the heat exchanger.
4. Echangeur de chaleur selon la revendication 3, caractérisé en ce que chacune des ailes longitudinales (42) est repliée sensiblement à angle droit sur toute sa longueur, y compris dans la région du flasque (44).4. Heat exchanger according to claim 3, characterized in that each of the longitudinal wings (42) is folded substantially at right angles over its entire length, including in the region of the flange (44).
5. Echangeur de chaleur selon la revendication 3, caractérisé en ce que chacune des ailes longitudinales (42) est repliée sensiblement à angle droit sur toute sa longueur, sauf dans la région du flasque (44) où elle présente une extrémité (50) rabattue contre l'âme. 5. Heat exchanger according to claim 3, characterized in that each of the longitudinal wings (42) is folded substantially at right angles over its entire length, except in the region of the flange (44) where it has a folded end (50) against the soul.
6. Echangeur de chaleur selon l'une des revendications 1 à 5, caractérisé en ce que la plaque collectrice (20) comprend au moins une dent de verrouillage (52) qui s'étend entre deux dents de sertissage (36) voisines, est repliée vers l'extérieur pour passer entre deux pattes de sertissage voisines (46) de la joue latérale (38) et est rabattue contre l'âme (40) de la joue latérale (38).6. Heat exchanger according to one of claims 1 to 5, characterized in that the collector plate (20) comprises at least one locking tooth (52) which extends between two adjacent crimping teeth (36), is folded outwards to pass between two adjacent crimping tabs (46) of the lateral cheek (38) and is folded against the core (40) of the lateral cheek (38).
7. Echangeur de chaleur selon l'une des revendications 1 à 6, caractérisé en ce que les pattes de sertissage (46) de la joue latérale (38) sont seulement serties mécaniquement sur les dents de sertissage (36) de la plaque collectrice (20).7. Heat exchanger according to one of claims 1 to 6, characterized in that the crimping lugs (46) of the side cheek (38) are only crimped mechanically on the crimping teeth (36) of the header plate ( 20).
8. Echangeur de chaleur selon l'une des revendications 1 à 6, caractérisé en ce que les pattes de sertissage (46) de la joue8. Heat exchanger according to one of claims 1 to 6, characterized in that the crimping lugs (46) of the cheek
-latérale (38) sont serties mécaniquement et brasées sur les dents de sertissage (36) de la plaque collectrice (20).-side (38) are crimped mechanically and brazed on the crimping teeth (36) of the collector plate (20).
9. Echangeur de chaleur selon l'une des revendications 1 a 8, caractérisé en ce qu'il comprend deux joues latérales (38) opposées reliées, d'une part, à un premier ensemble plaque collectrice (20)/boîte collectrice (26) et, d'autre part, à un deuxième ensemble plaque collectrice (20) /boîte collectrice (26). 9. Heat exchanger according to one of claims 1 to 8, characterized in that it comprises two opposite side flanges (38) connected, on the one hand, to a first assembly of the collecting plate (20) / collecting box (26 ) and, on the other hand, to a second collector plate (20) / collector box (26) assembly.
PCT/FR2002/001001 2001-03-26 2002-03-22 Heat exchanger with side flanges, in particular for motor vehicle WO2002077559A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP02722357A EP1373820A1 (en) 2001-03-26 2002-03-22 Heat exchanger with side flanges, in particular for motor vehicle

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0104034A FR2822532B1 (en) 2001-03-26 2001-03-26 HEAT EXCHANGER WITH LATERAL JOYS, ESPECIALLY FOR MOTOR VEHICLE
FR01/04034 2001-03-26

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DE102005008409A1 (en) * 2005-02-24 2006-08-31 Modine Manufacturing Co., Racine Heat exchanger with pipes and ribs and manufacturing process
EP2085735A1 (en) * 2008-01-30 2009-08-05 Huixin Xu A Clamped Structure between the Header and the Side Plate of an Automotive Heater Core
WO2011073038A1 (en) * 2009-12-18 2011-06-23 Valeo Systemes Thermiques Heat exchanger
EP2378235A1 (en) * 2008-06-26 2011-10-19 Valeo Systemes Thermiques Heat exchanger and casing for the exchanger
DE102018221487A1 (en) * 2018-12-12 2020-06-18 Mahle International Gmbh Heat exchanger for a motor vehicle and associated manufacturing process
CN114270130A (en) * 2019-09-09 2022-04-01 法雷奥自动系统公司 Header box assembly

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DE102013227113A1 (en) 2013-12-23 2015-07-09 MAHLE Behr GmbH & Co. KG Heat exchanger with circumferential seal
FR3055821B1 (en) 2016-09-14 2019-11-08 Valeo Systemes Thermiques SERTIALLY COATED ARTICLE

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Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005008409A1 (en) * 2005-02-24 2006-08-31 Modine Manufacturing Co., Racine Heat exchanger with pipes and ribs and manufacturing process
EP2085735A1 (en) * 2008-01-30 2009-08-05 Huixin Xu A Clamped Structure between the Header and the Side Plate of an Automotive Heater Core
EP2378235A1 (en) * 2008-06-26 2011-10-19 Valeo Systemes Thermiques Heat exchanger and casing for the exchanger
WO2011073038A1 (en) * 2009-12-18 2011-06-23 Valeo Systemes Thermiques Heat exchanger
FR2954481A1 (en) * 2009-12-18 2011-06-24 Valeo Systemes Thermiques HEAT EXCHANGER
CN102782435A (en) * 2009-12-18 2012-11-14 法雷奥热系统公司 Heat exchanger
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DE102018221487A1 (en) * 2018-12-12 2020-06-18 Mahle International Gmbh Heat exchanger for a motor vehicle and associated manufacturing process
US11187472B2 (en) 2018-12-12 2021-11-30 Mahle International Gmbh Heat exchanger for a motor vehicle and corresponding production method
CN114270130A (en) * 2019-09-09 2022-04-01 法雷奥自动系统公司 Header box assembly

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FR2822532A1 (en) 2002-09-27
EP1373820A1 (en) 2004-01-02

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