EP0176382B1 - Heat exchanger, particularly a radiator of a vehicle engine cooling circuit - Google Patents

Heat exchanger, particularly a radiator of a vehicle engine cooling circuit Download PDF

Info

Publication number
EP0176382B1
EP0176382B1 EP85401580A EP85401580A EP0176382B1 EP 0176382 B1 EP0176382 B1 EP 0176382B1 EP 85401580 A EP85401580 A EP 85401580A EP 85401580 A EP85401580 A EP 85401580A EP 0176382 B1 EP0176382 B1 EP 0176382B1
Authority
EP
European Patent Office
Prior art keywords
tubes
heat exchanger
sets
sub
exchanger according
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.)
Expired
Application number
EP85401580A
Other languages
German (de)
French (fr)
Other versions
EP0176382A2 (en
EP0176382A3 (en
Inventor
Marco Valier
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 SE
Original Assignee
Valeo SE
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 SE filed Critical Valeo SE
Publication of EP0176382A2 publication Critical patent/EP0176382A2/en
Publication of EP0176382A3 publication Critical patent/EP0176382A3/en
Application granted granted Critical
Publication of EP0176382B1 publication Critical patent/EP0176382B1/en
Expired legal-status Critical Current

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
    • F28D1/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
    • F28D1/04—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits
    • F28D1/053—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being straight
    • F28D1/05316—Assemblies of conduits connected to common headers, e.g. core type radiators
    • F28D1/05333—Assemblies of conduits connected to common headers, e.g. core type radiators with multiple rows of conduits or with multi-channel conduits

Definitions

  • the invention relates to a heat exchanger, in particular a radiator of a motor vehicle engine cooling circuit, which comprises a bundle of finned tubes and at least one water box mounted at one end of the bundle, the latter being formed of at least two sets, independent and juxtaposed, of finned tubes.
  • the radiator of a cooling circuit of a truck engine or the like has a larger size than that of a radiator of a passenger vehicle and, for this reason, it has already been proposed to form the bundle of tubes of such a radiator by at least two sets of finned tubes independent of one another which are juxtaposed and which are mounted in parallel between the water boxes of the exchanger.
  • each of these sets of finned tubes is simpler and easier to manufacture and handle than a single bundle corresponding to the juxtaposition of these tube assemblies.
  • the fins with which the tubes of these assemblies are provided have an area twice (or several times) smaller than that of the fins with which the tubes would be provided with a bundle made in one piece.
  • these fins are generally made of aluminum and have an extremely small thickness, of the order of 0.1 mm, the reduction in their dimensions greatly facilitates the manufacture and assembly of the radiator beam, and also improves its mechanical strength.
  • an exchanger whose bundle is formed from at least two independent sets of finned tubes, which are juxtaposed as close as possible, is subjected to significant vibrations in use, which can cause impacts of the fins of these sets. on each other by their facing edges, leading to crushing and deformation of these edges.
  • US Pat. No. 2,184,657 describes a heat exchanger comprising several sets of finned tubes, in which each set forms an independent radiator.
  • the two water boxes of each radiator are connected to each other by crosspieces and the crosspieces of the juxtaposed radiators are fixed to each other by bolts.
  • Such a heat exchanger also requires connecting conduits between the water boxes of the radiators and is therefore complex and expensive to produce.
  • the object of the invention is in particular to avoid the drawbacks of known exchangers, in a simple, inexpensive and particularly effective manner.
  • a heat exchanger in particular a radiator for a motor vehicle engine cooling circuit, comprising a bundle of finned tubes and at least one water box mounted at one end of the bundle, the latter being formed from at least two sets, independent and juxtaposed, of finned tubes, characterized by first means urging the sets of finned tubes towards each other, in a plane perpendicular to the tubes of said sets, these first means comprising two parallel sleepers extending along two small faces of the bundle parallel to the tubes and connecting members connecting the sleepers together; and second means provided in each set of tubes to be supported one on the other, in a plane perpendicular to the tubes by the first means, the second means of each set of tubes comprising a rigid plate having substantially the shape of a fin and slightly larger dimensions, which is interposed between two fins in said assembly, and which is crossed by the tubes of this assembly.
  • the connecting members comprise two tie rods which connect the crosspieces to each other in their middle zone, and these crosspieces are connected to each other at their ends, for example by the manifold-waterbox assemblies of the 'exchanger.
  • each set of finned tubes is facilitated by the fact that the plate provided in this set has substantially the same shape as the fins and of dimensions slightly greater than those of the fins.
  • the conventional means of assembling the bundles of tubes can therefore be used, without modification.
  • the aforementioned plates of said sets of tubes are juxtaposed in the same plane, perpendicular to the tubes, and are clamped one on the other and between the crosspieces by the aforementioned tie rods.
  • the plates advantageously having dimensions slightly larger than those of the fins in the areas where they must come into contact, the edges of the fins are thus kept at a small distance from each other.
  • the sets of finned tubes constituting the exchanger bundle can be maintained with respect to the vibrations to which the exchanger is subjected in use, without the edges of the fins of the juxtaposed sets of tubes being able to warp and crash against each other.
  • a rigid and relatively undeformable assembly is thus obtained by virtue of the prestressing exerted on the plates juxtaposed by the aforementioned crosspieces and tie rods.
  • the aforementioned plates are in a vibration-absorbing material, for example plastic and have a thickness several times greater than that of the fins, for example of the order of 10 mm when the fins are made of aluminum and have a thickness of about 0 , 1 mm.
  • these plates may include cavities or lightening grooves.
  • the heat exchanger shown in Figure 1 is in particular intended to be mounted in the cooling circuit of a motor vehicle engine such as a truck.
  • It comprises a bundle 10 of finned tubes, straight and parallel, at the ends of which are mounted two water boxes (12 and 14) respectively, one of which comprises the tube (16) for entering the liquid in the exchanger and the other of which comprises the outlet pipe (18), these two water boxes being conventionally mounted on the ends of the bundle (10), for example by means of collectors or tube plates which are passed through in a leaktight manner by the ends of the bundle tubes.
  • the bundle (10) of the exchanger is, due to its large size, formed by at least two sets (20 and 22) of finned tubes, which are juxtaposed vertically, the assembly (20) forming for example the upper half of the bundle (10) while the assembly (22) forms its lower half.
  • each set (20, 22) of fin tubes is itself made up of two sub-assemblies (24, 26 and 28, 30) of fin tubes, which are independent of each other and which are juxtaposed in each set (20 or 22) in a horizontal direction perpendicular to the direction of juxtaposition of the two sets (20 and 22) and corresponding to the thickness of the beam (10).
  • the two sub-assemblies (24 and 26) of finned tubes forming the assembly (20) are juxtaposed horizontally in the direction of the thickness of the beam, as well as the two sub-assemblies (28 and 30) forming the assembly (22) of finned tubes.
  • the two sub-assemblies (26 and 30) of finned tubes are juxtaposed vertically, and the sub-assemblies (24 and 28) are also juxtaposed vertically, in the direction of the juxtaposition of the assemblies (20 and 22 ).
  • Each sub-assembly (24, 26, 28, 30) of finned tubes is formed of rectilinear and parallel tubes arranged in rows and columns, which are provided with fins (34) which are plane and parallel to each other, perpendicular to the tubes (32 ).
  • Each sub-assembly (24, 26, 28, 30) of finned tubes comprises, substantially in its central region, a rigid plate (36) having substantially the same planar and rectangular shape as the fins (34) of each sub-assembly , but slightly larger in length and width, this plate (36) being interposed between two fins (34) and having a thickness several times greater than that of the fins.
  • the plate (30) is traversed by the tubes (32) of the corresponding sub-assembly and is fixed to at least some of these tubes, in the same way as the fins are fixed to the tubes, for example by crimping by means of swelling or radial expansion of the tubes after their introduction into the holes of the fins and of the plate (36).
  • the four plates (36) are also juxtaposed and come into abutment two by two the on top of each other.
  • the crosspieces (38) are also connected to each other, in their central region, by two parallel tie rods (40) each extending across a large face of the bundle (10), on either side of the latter. .
  • the threaded ends of the tie rods (40) pass through holes in this lugs (42) in 1 fixed externally on the edges of the crosspieces (38), and receive tightening nuts (44).
  • the sub-assemblies (24, 26, 28, 30) of finned tubes are identical to each other. This identity is not compulsory and the invention also applies to the case where the finned tube sub-assemblies or the sets of finned tubes forming the exchanger bundle are not identical. Similarly, the number of assemblies or sub-assemblies of this finned tube forming the bundle (10) is not limited to two.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Details Of Heat-Exchange And Heat-Transfer (AREA)
  • Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)

Description

L'invention concerne un échangeur de chaleur, en particulier un radiateur d'un circuit de refroidissement de moteur de véhicule automobile, qui comprend un faisceau de tubes à ailettes et au moins une boîte à eau montée à une extrémité du faisceau, celui-ci étant formé d'au moins deux ensembles, indépendants et juxtaposés, de tubes à ailettes.The invention relates to a heat exchanger, in particular a radiator of a motor vehicle engine cooling circuit, which comprises a bundle of finned tubes and at least one water box mounted at one end of the bundle, the latter being formed of at least two sets, independent and juxtaposed, of finned tubes.

On sait que le radiateur d'un circuit de refroidissement d'un moteur de camion ou analogue a une taille plus importante que celle d'un radiateur d'un véhicule de tourisme et, pour cette raison, il a déjà été proposé de former le faisceau de tubes d'un tel radiateur par au moins deux ensembles de tubes à ailettes indépendants l'un de l'autre qui sont juxtaposés et qui sont montés en parallèle entre les boîtes à eau de l'échangeur.It is known that the radiator of a cooling circuit of a truck engine or the like has a larger size than that of a radiator of a passenger vehicle and, for this reason, it has already been proposed to form the bundle of tubes of such a radiator by at least two sets of finned tubes independent of one another which are juxtaposed and which are mounted in parallel between the water boxes of the exchanger.

Chacun de ces ensembles de tubes à ailettes, correspondant à une fraction du faisceau de tubes du radiateur, est de fabrication et de manipulation plus simples et plus faciles qu'un faisceau unique correspondant à la juxtaposition de ces ensembles de tubes. En particulier, les ailettes dont sont munis les tubes de ces ensembles ont une surface deux fois (ou plusieurs fois) plus faible que celle des ailettes dont seraient munis les tubes d'un faisceau réalisé en une seule pièce. Comme ces ailettes sont en général en aluminium et ont une épaisseur extrêmement faible, de l'ordre de 0,1 mm, la réduction de leurs dimensions facilite beaucoup la fabrication et l'assemblage du faisceau du radiateur, et améliore également sa tenue mécanique.Each of these sets of finned tubes, corresponding to a fraction of the radiator tube bundle, is simpler and easier to manufacture and handle than a single bundle corresponding to the juxtaposition of these tube assemblies. In particular, the fins with which the tubes of these assemblies are provided have an area twice (or several times) smaller than that of the fins with which the tubes would be provided with a bundle made in one piece. As these fins are generally made of aluminum and have an extremely small thickness, of the order of 0.1 mm, the reduction in their dimensions greatly facilitates the manufacture and assembly of the radiator beam, and also improves its mechanical strength.

Toutefois, un échangeur dont le faisceau est formé d'au moins deux ensembles indépendants de tubes à ailettes, qui sont juxtaposés aussi près que possible, est soumis à des vibrations importantes en utilisation, ce qui peut provoquer des chocs des ailettes de ces ensembles les unes sur les autres par leurs bords en regard, conduisant à un écrasement et à une déformation de ces bords.However, an exchanger whose bundle is formed from at least two independent sets of finned tubes, which are juxtaposed as close as possible, is subjected to significant vibrations in use, which can cause impacts of the fins of these sets. on each other by their facing edges, leading to crushing and deformation of these edges.

Par ailleurs, le Brevet US-A-2 184 657 décrit un échangeur de chaleur comprenant plusieurs ensembles de tubes à ailettes, dans lequel chaque ensemble forme un radiateur indépendant. Les deux boîtes à eau de chaque radiateur sont reliées entre elles par des traverses et les traverses des radiateurs juxtaposés sont fixées entre elles par des boulons.Furthermore, US Pat. No. 2,184,657 describes a heat exchanger comprising several sets of finned tubes, in which each set forms an independent radiator. The two water boxes of each radiator are connected to each other by crosspieces and the crosspieces of the juxtaposed radiators are fixed to each other by bolts.

Un tel échangeur de chaleur exige en outre des conduits de liaison entre les boîtes à eau des radiateurs et est donc complexe et couteux à réaliser.Such a heat exchanger also requires connecting conduits between the water boxes of the radiators and is therefore complex and expensive to produce.

L'invention a notamment pour but d'éviter les inconvénients des échangeurs connus, d'une façon simple, peu coûteuse et particulièrement efficace.The object of the invention is in particular to avoid the drawbacks of known exchangers, in a simple, inexpensive and particularly effective manner.

Elle propose à cet effet un échangeur de chaleur, en particulier un radiateur d'un circuit de refroidissement de moteur de véhicule automobile, comprenant un faisceau de tubes à ailettes et au moins une boîte à eau montée à une extrémité du faisceau, ce dernier étant formé d'au moins deux ensembles, indépendants et juxtaposés, de tubes à ailettes, caractérisé par des premiers moyens sollicitant les ensembles de tubes à ailettes l'un vers l'autre, dans un plan perpendiculaire aux tubes desdits ensembles, ces premiers moyens comprenant deux traverses parallèles s'étendant le long de deux petites faces du faisceau parallèlement aux tubes et des organes de liaison reliant les traverses entre elles; et des seconds moyens prévus dans chaque ensemble de tubes pour être mis en appui les uns sur les autres, dans un plan perpendiculaire aux tubes par les premiers moyens, les seconds moyens de chaque ensemble de tube comprenant une plaque rigide ayant sensiblement la forme d'une ailette et des dimensions légèrement supérieures, qui est intercalée entre deux ailettes dans ledit ensemble, et qui est traversée par les tubes de cet ensemble.To this end, it provides a heat exchanger, in particular a radiator for a motor vehicle engine cooling circuit, comprising a bundle of finned tubes and at least one water box mounted at one end of the bundle, the latter being formed from at least two sets, independent and juxtaposed, of finned tubes, characterized by first means urging the sets of finned tubes towards each other, in a plane perpendicular to the tubes of said sets, these first means comprising two parallel sleepers extending along two small faces of the bundle parallel to the tubes and connecting members connecting the sleepers together; and second means provided in each set of tubes to be supported one on the other, in a plane perpendicular to the tubes by the first means, the second means of each set of tubes comprising a rigid plate having substantially the shape of a fin and slightly larger dimensions, which is interposed between two fins in said assembly, and which is crossed by the tubes of this assembly.

Selon une autre caractéristique de l'invention, les organes de liaison comprennent deux tirants qui relient les traverses entre elles dans leur zone médiane, et ces traverses sont reliées entre elles à leurs extrémités, par exemple par les ensembles collecteurs-boîtes à eau de l'échangeur.According to another characteristic of the invention, the connecting members comprise two tie rods which connect the crosspieces to each other in their middle zone, and these crosspieces are connected to each other at their ends, for example by the manifold-waterbox assemblies of the 'exchanger.

L'assemblage de chaque ensemble de tubes à ailettes est facilité par le fait que la plaque prévue dans cet ensemble a sensiblement la même forme que les ailettes et des dimensions légèrement supérieures à celles des ailettes. Les moyens classiques d'assemblage des faisceaux de tubes peuvent donc être utilisés, sans modification.The assembly of each set of finned tubes is facilitated by the fact that the plate provided in this set has substantially the same shape as the fins and of dimensions slightly greater than those of the fins. The conventional means of assembling the bundles of tubes can therefore be used, without modification.

Lorsque l'échangeur de chaleur selon l'invention est assemblé, les plaques précitées desdits ensembles de tubes sont juxtaposées dans un même plan, perpendiculaire aux tubes, et sont serrées l'une sur l'autre et entre les traverses par les tirants précités.When the heat exchanger according to the invention is assembled, the aforementioned plates of said sets of tubes are juxtaposed in the same plane, perpendicular to the tubes, and are clamped one on the other and between the crosspieces by the aforementioned tie rods.

Les plaques ayant avantageusement des dimensions légèrement supérieures à celles des ailettes dans les zones où elles doivent venir en contact, les bords des ailettes sont ainsi maintenus à une petite distance les uns des autres.The plates advantageously having dimensions slightly larger than those of the fins in the areas where they must come into contact, the edges of the fins are thus kept at a small distance from each other.

Grâce à cette combinaison de moyens, les ensembles des tubes à ailettes constituant le faisceau de l'échangeur peuvent être maintenus à l'égard des vibrations auxquelles est soumis l'échangeur en utilisation, sans que les bords des ailettes des ensembles juxtaposés de tubes puissent se déformer et s'écraser les uns contre les autres.Thanks to this combination of means, the sets of finned tubes constituting the exchanger bundle can be maintained with respect to the vibrations to which the exchanger is subjected in use, without the edges of the fins of the juxtaposed sets of tubes being able to warp and crash against each other.

On obtient ainsi un ensemble rigide et relativement indéformable grâce à la précontrainte exercée sur les plaques juxtaposées par les traverses et les tirants précités.A rigid and relatively undeformable assembly is thus obtained by virtue of the prestressing exerted on the plates juxtaposed by the aforementioned crosspieces and tie rods.

Avantageusement, les plaques précitées sont en une matière amortissant les vibrations, par exemple en matière plastique et ont une épaisseur plusieurs fois supérieure à celle des ailettes, par exemple de l'ordre de 10 mm lorsque les ailettes sont réalisées en aluminium et ont une épaisseur de l'ordre de 0,1 mm.Advantageously, the aforementioned plates are in a vibration-absorbing material, for example plastic and have a thickness several times greater than that of the fins, for example of the order of 10 mm when the fins are made of aluminum and have a thickness of about 0 , 1 mm.

Pour diminuer leur poids et augmenter leur élasticité, ces plaques peuvent comprendre des cavités ou rainures d'allégement.To reduce their weight and increase their elasticity, these plates may include cavities or lightening grooves.

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

  • - la figure 1 est une vue en élévation d'un échangeur de chaleur selon l'invention.
  • - la figure 2 est une vue en coupe, à plus grande échelle, selon la ligne II-II de la figure 1.
  • - la figure 3 est une vue en coupe selon la ligne III-III de la figure 2.
In the description which follows, given by way of example, reference is made to the appended drawings, in which:
  • - Figure 1 is an elevational view of a heat exchanger according to the invention.
  • - Figure 2 is a sectional view, on a larger scale, along the line II-II of Figure 1.
  • - Figure 3 is a sectional view along line III-III of Figure 2.

L'échangeur de chaleur représentée en figure 1 est en particulier destiné à être monté dans le circuit de refroidissement d'un moteur de véhicule automobile tel qu'un camion.The heat exchanger shown in Figure 1 is in particular intended to be mounted in the cooling circuit of a motor vehicle engine such as a truck.

Il comprend un faisceau 10 de tubes à ailettes, rectilignes et parallèles, aux extrémités duquel sont montées deux boîtes à eau (12 et 14) respectivement, dont l'une comprend la tubulure (16) d'entrée de liquide dans l'échangeur et dont l'autre comprend la tubulure de sortie (18), ces deux boîtes à eau étant montées de façon classique sur les extrémités du faisceau (10), au moyen par exemple de collecteurs ou plaques à tubes qui sont traversés de façon étanche pa les extrémités des tubes du faisceau.It comprises a bundle 10 of finned tubes, straight and parallel, at the ends of which are mounted two water boxes (12 and 14) respectively, one of which comprises the tube (16) for entering the liquid in the exchanger and the other of which comprises the outlet pipe (18), these two water boxes being conventionally mounted on the ends of the bundle (10), for example by means of collectors or tube plates which are passed through in a leaktight manner by the ends of the bundle tubes.

Le faisceau (10) de l'échangeur est, en raison de sa grande taille, formé d'au moins deux ensembles (20 et 22) de tubes à ailettes, qui sont juxtaposés verticalement, l'ensemble (20) formant par exemple la moitié supérieure du faisceau (10) tandis que l'ensemble (22) forme sa moitié inférieure.The bundle (10) of the exchanger is, due to its large size, formed by at least two sets (20 and 22) of finned tubes, which are juxtaposed vertically, the assembly (20) forming for example the upper half of the bundle (10) while the assembly (22) forms its lower half.

Dans l'exemple de réalisation représenté (figures 2 et 3), chaque ensemble (20, 22) de tubes à ailettes est lui-même constitué de deux sous-ensembles (24, 26 et 28, 30) respectivement de tubes à ailettes, qui sont indépendants les uns des autres et qui sont juxtaposés dans chaque ensemble (20 ou 22) dans une direction horizontale perpendiculaire à la direction de juxtaposition des de deux ensembles (20 et 22) et correspondant à l'épaisseur du faisceau (10). Les deux sous-ensembles (24 et 26) de tubes à ailettes formant l'ensemble (20) sont juxtaposés horizontalement dans le sens de l'épaisseur du faisceau, ainsi que les deux sous-ensembles (28 et 30) formant l'ensemble (22) de tubes à ailettes. D'autre part, les deux sous-ensembles (26 et 30) de tubes à ailettes sont juxtaposés verticalement, et les sous-ensembles (24 et 28) sont également juxtaposés verticalement, dans le sens de la juxtaposition des ensembles (20 et 22).In the embodiment shown (FIGS. 2 and 3), each set (20, 22) of fin tubes is itself made up of two sub-assemblies (24, 26 and 28, 30) of fin tubes, which are independent of each other and which are juxtaposed in each set (20 or 22) in a horizontal direction perpendicular to the direction of juxtaposition of the two sets (20 and 22) and corresponding to the thickness of the beam (10). The two sub-assemblies (24 and 26) of finned tubes forming the assembly (20) are juxtaposed horizontally in the direction of the thickness of the beam, as well as the two sub-assemblies (28 and 30) forming the assembly (22) of finned tubes. On the other hand, the two sub-assemblies (26 and 30) of finned tubes are juxtaposed vertically, and the sub-assemblies (24 and 28) are also juxtaposed vertically, in the direction of the juxtaposition of the assemblies (20 and 22 ).

Chaque sous-ensemble (24, 26, 28, 30) de tubes ailettes est formé de tubes rectilignes et parallèles agencés en rangées et en colonnes, qui sont munis d'ailettes (34) planes et parallèles entre elles, perpendiculaires aux tubes (32). Chaque sous-ensemble (24, 26, 28, 30) de tubes à ailettes comprend, sensiblement dans sa zone médiane, une plaque rigide (36) ayant sensiblement la même forme plane et rectangulaire que les ailettes (34) de chaque sous-ensemble, mais des dimensions légèrement supérieures en longueur et en largeur, cette plaque (36) étant intercalée entre deux ailettes (34) et ayant une épaisseur plusieurs fois supérieure à celle des ailettes.Each sub-assembly (24, 26, 28, 30) of finned tubes is formed of rectilinear and parallel tubes arranged in rows and columns, which are provided with fins (34) which are plane and parallel to each other, perpendicular to the tubes (32 ). Each sub-assembly (24, 26, 28, 30) of finned tubes comprises, substantially in its central region, a rigid plate (36) having substantially the same planar and rectangular shape as the fins (34) of each sub-assembly , but slightly larger in length and width, this plate (36) being interposed between two fins (34) and having a thickness several times greater than that of the fins.

Comme les ailettes (34), la plaque (30) est traversée par les tubes (32) du sous-ensemble correspondant et est fixée à au moins certains de ces tubes, de la même façon que les ailettes sont fixées aux tubes, par exemple par sertissage au moyen d'un gonflement ou d'une expansion radiale des tubes après leur introduction dans les trous des ailettes et de la plaque (36).Like the fins (34), the plate (30) is traversed by the tubes (32) of the corresponding sub-assembly and is fixed to at least some of these tubes, in the same way as the fins are fixed to the tubes, for example by crimping by means of swelling or radial expansion of the tubes after their introduction into the holes of the fins and of the plate (36).

Lorsque les quatre sous-ensembles (24, 26, 28, 30) de tubes à ailettes sont juxtaposés pour constituer le faisceau (10) de l'échangeur, les quatre plaques (36) sont également juxtaposées et viennent en butée deux à deux les unes sur les autres.When the four sub-assemblies (24, 26, 28, 30) of finned tubes are juxtaposed to constitute the bundle (10) of the exchanger, the four plates (36) are also juxtaposed and come into abutment two by two the on top of each other.

Sur les deux petites faces du faisceau (10) qui ne sont pas associées aux boîtes à eau (12 et 14), s'étendent deux traverses métalliques (38) à section en U, qui sont relativement rigides et dont les extrémités sont fixées par tout moyen approprié sur les boîtes à eau (12 et 14) ou sur les collecteurs associés à ces boîtes à eau.On the two small faces of the bundle (10) which are not associated with the water boxes (12 and 14), extend two metal crosspieces (38) of U-section, which are relatively rigid and the ends of which are fixed by any suitable means on the water boxes (12 and 14) or on the collectors associated with these water boxes.

Les traverses (38) sont également reliées entre elles, dans leur zone médiane, par deux tirants parallèles (40) s'étendant chacun en travers d'une grande face du faisceau (10), de part et d'autre de celui-ci. Les extrémités filetées des tirants (40) traversent des trous ce pattes (42) en 1 fixées extérieurement sur les rebords des traverses (38), et reçoivent des écrous de serrage (44).The crosspieces (38) are also connected to each other, in their central region, by two parallel tie rods (40) each extending across a large face of the bundle (10), on either side of the latter. . The threaded ends of the tie rods (40) pass through holes in this lugs (42) in 1 fixed externally on the edges of the crosspieces (38), and receive tightening nuts (44).

Le serrage de ces écrous sur les extrémités filetées des tirants (40) permet de serrer deux à deux à l'une sur l'autre les plaques (36) entre les traverses (38). Du fait de l'appui des plaques (36) les unes sur les autres et sur les traverses (38) qui sont reliées entre elles avec précontrainte dans leur zone médiane par les tirants (40) et qui sont également fixées rigidement à leurs extrémités aux boîtes à eau (16 et 14) ou aux collecteurs associés, l'ensemble du faisceau (10) ainsi obtenu est relativement rigide et indéformable, et pratiquement insensible aux vibrations. Par ailleurs, comme les plaques (36) ont des dimensions en longueur et en largeur légèrement supérieures à celles des ailettes (34), les ailettes des sous-ensembles juxtaposés (24, 26, 28, 30) ne peuvent venir en contact les unes avec les autres par leurs bords en regard et ne peuvent donc se déformer ou s'écraser.The tightening of these nuts on the threaded ends of the tie rods (40) allows the plates (36) to be tightened two by two to one another between the crosspieces (38). Due to the support of the plates (36) on each other and on the crosspieces (38) which are connected to each other with prestress in their median zone by the tie rods (40) and which are also rigidly fixed at their ends to the water boxes (16 and 14) or associated collectors, the entire bundle (10) thus obtained is relatively rigid and non-deformable, and practically insensitive to vibrations. Furthermore, as the plates (36) have dimensions in length and width slightly greater than those of the fins (34), the fins of the juxtaposed subassemblies (24, 26, 28, 30) cannot come into contact with one another. with the others by their opposite edges and therefore cannot deform or crush.

Dans l'exemple de réalisation représenté, les sous-ensembles (24, 26, 28, 30) de tubes à ailettes sont identiques entre eux. Cette identité n'est pas obligatoire et l'invention s'applique également au cas où les sous-ensembles de tubes à ailettes ou les ensembles de tubes à ailettes formant le faisceau de l'échangeur ne sont pas identiques. De même, le nombre d'ensembles ou de sous-ensembles ce tubes à ailettes formant le faisceau (10) n'est pas limité à deux.In the embodiment shown, the sub-assemblies (24, 26, 28, 30) of finned tubes are identical to each other. This identity is not compulsory and the invention also applies to the case where the finned tube sub-assemblies or the sets of finned tubes forming the exchanger bundle are not identical. Similarly, the number of assemblies or sub-assemblies of this finned tube forming the bundle (10) is not limited to two.

Claims (10)

1. A heat exchanger, in particular a radiator in the cooling circuit of a motor vehicle engine, the heat exchanger comprising a bundle of finned tubes and at least one water box (12, 14) mounted at one end of the bundle, said bundle being made up from at least two independent and juxtaposed sets of finned tubes, the heat exchanger being characterized by first means (38, 40) urging the sets (20, 22) of finned tubes towards one another in a plane perpendicular to the tubes (32) of said sets, said first means comprising two parallel beams (38) extending along the two small faces of the bundle parallel to the tubes (32) together with link members (40) interconnecting the beams; and second means (36) provided in each set (20, 22) of tubes to be thrust against one another in a plane perpendicular to the tubes (32) by the first means (38,40); the second means of each set (20, 22) of tubes comprising a rigid plate (36) having substantially the same shape as a fin (34) and being slightly larger in size, said plate being interposed between two fins (34) of said set and having the tubes (32) of said set passing therethrough.
2. A heat exchanger according to claim 1, characterized in that the link members comprise a pair of ties (40) interconnecting the middles of the beams (38).
3. A heat exchanger according to claim 1 or 2, characterized in that the beams (38) are interconnected at their ends, for example by the waterbox-manifold assemblies (12, 14) of the heat exchanger.
4. A heat exchanger according to claim 1, characterized in that said plate (36) is provided in the middle of the corresponding set of tubes (20, 22).
5. A heat exchanger according to claim 1 or 2, characterized in that said plates (36) of said sets of tubes are juxtaposed in a common plane perpendicular to the tubes (32) and are clamped against one another and between the beams by said ties (40).
6. A heat exchanger according to any one of claims 1 to 5, characterized in that each plate (36) is fixed to at least some of the tubes (32) passing therethrough.
7. A heat exchanger according to any one of claims 1 to 6, characterized in that said plates (36) are several times thicker than the fins (34).
8. A heat exchanger according to claim 7, characterized in that said plates (36) are made of plastic material and are about 10 mm thick.
9. A heat exchanger according to any one of claims 1 to 8, characterized in that the plates (36) include weight-reducing cavities or grooves.
10. A heat exchanger according to any one of claims 1 to 9, characterized in that each set (20, 22) of finned tubes is itself built up from two independent sub-sets (24, 26, 28, 30) of finned tubes, which sub-sets are juxtaposed in a direction perpendicular to the direction in which the two above-mentioned sets (20, 22) are juxtaposed, each sub-set of tubes including a corresponding rigid plate (36) having substantially the same shape as a fin in the sub-set and being slightly larger in size, said plate being interposed between two fins of the sub-set and having the tubes of the sub-set passing therethrough, said plates bearing firstly against one of the above-mentioned beams (38) and secondly both against a plate (36) belonging to the other subassembly in the same assembly (20 or 22) and against a plate (36) of a corresponding sub-assembly in the other assembly (22 or 20) of finned tubes.
EP85401580A 1984-08-22 1985-08-01 Heat exchanger, particularly a radiator of a vehicle engine cooling circuit Expired EP0176382B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8413081A FR2571485B1 (en) 1984-08-22 1984-08-22 HEAT EXCHANGER, PARTICULARLY RADIATOR OF A MOTOR VEHICLE ENGINE COOLING CIRCUIT
FR8413081 1984-08-22

Publications (3)

Publication Number Publication Date
EP0176382A2 EP0176382A2 (en) 1986-04-02
EP0176382A3 EP0176382A3 (en) 1986-04-16
EP0176382B1 true EP0176382B1 (en) 1988-05-18

Family

ID=9307168

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85401580A Expired EP0176382B1 (en) 1984-08-22 1985-08-01 Heat exchanger, particularly a radiator of a vehicle engine cooling circuit

Country Status (8)

Country Link
US (1) US4660626A (en)
EP (1) EP0176382B1 (en)
JP (1) JPS6162786A (en)
BR (1) BR8503908A (en)
DE (1) DE3562825D1 (en)
ES (1) ES295957Y (en)
FR (1) FR2571485B1 (en)
MX (1) MX158707A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4433165C1 (en) * 1994-09-16 1995-12-21 Mtu Friedrichshafen Gmbh Plate=type heat exchanger
DE10229973A1 (en) * 2002-07-03 2004-01-29 Behr Gmbh & Co. Heat exchanger
CN105134362A (en) * 2015-09-07 2015-12-09 南宁八菱科技股份有限公司 Heat exchanger plastic water chamber/air chamber with built-in pull rods

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1407867A (en) * 1921-01-06 1922-02-28 Ernest U Keller Socket and bowl for fishing tools
US1834001A (en) * 1926-11-19 1931-12-01 Modine Mfg Co Radiator
US1899629A (en) * 1931-10-26 1933-02-28 American Blower Corp Steel pipe and fin heater
US2184657A (en) * 1936-04-10 1939-12-26 Fred M Young Heat exchanger
US2298996A (en) * 1941-04-22 1942-10-13 Clifford Mfg Co Heat exchange apparatus
US3191670A (en) * 1961-07-24 1965-06-29 Westinghouse Electric Corp Finned heat exchangers
US3472316A (en) * 1967-12-07 1969-10-14 Couch Ind Inc Layered heat exchanger with interlocking header plates
DE2144465B2 (en) * 1971-09-06 1975-04-17 Geax-Luftkuehlergesellschaft Happel Gmbh & Co Kg, 4630 Bochum Surface condenser cooled by an air stream
DE3045087C2 (en) * 1980-11-29 1984-04-05 Kühlerfabrik Längerer & Reich GmbH & Co KG, 7024 Filderstadt Heat exchanger
US4373578A (en) * 1981-04-23 1983-02-15 Modine Manufacturing Company Radiator with heat exchanger
DE3119628C2 (en) * 1981-05-16 1985-07-25 Süddeutsche Kühlerfabrik Julius Fr. Behr GmbH & Co. KG, 7000 Stuttgart Flat tube heat exchanger
FR2512941B1 (en) * 1981-09-14 1987-04-24 Valeo HEAT EXCHANGER WITH PARALLEL TUBE BEAM AND METHOD FOR ASSEMBLING ITS CONSTITUENT ELEMENTS
FR2549945B1 (en) * 1983-07-27 1988-09-23 Valeo HEAT EXCHANGER, PARTICULARLY RADIATOR OF A MOTOR VEHICLE ENGINE COOLING CIRCUIT
US4570704A (en) * 1984-03-26 1986-02-18 L & M Radiator, Inc. Support for heat exchanger tubes

Also Published As

Publication number Publication date
EP0176382A2 (en) 1986-04-02
MX158707A (en) 1989-02-27
ES295957U (en) 1987-07-16
FR2571485B1 (en) 1987-02-13
EP0176382A3 (en) 1986-04-16
FR2571485A1 (en) 1986-04-11
DE3562825D1 (en) 1988-06-23
JPS6162786A (en) 1986-03-31
US4660626A (en) 1987-04-28
BR8503908A (en) 1986-05-27
ES295957Y (en) 1988-01-16

Similar Documents

Publication Publication Date Title
EP0505244B1 (en) Heat exchanger with tube bundle, more particularly for motor vehicle
EP2294348B1 (en) Condenser
FR2681419A1 (en) Heat exchanger with tube bundle including several fluid circuits
EP0114554A2 (en) End plate for a heat exchanger with tubes and headers
EP0176407B1 (en) Header box for a heat exchanger and heat exchanger comprising this header box
FR2711236A1 (en) Heat exchanger with two rows of tubes, in particular for a motor vehicle.
FR2742528A1 (en) Automobile heat exchanger with reinforced plate manifold
EP0176382B1 (en) Heat exchanger, particularly a radiator of a vehicle engine cooling circuit
FR2752927A1 (en) Heat exchanger of plate stack structure
EP0578568A1 (en) Heat-exchanger having a bundle with parallel tubes, particularly for motor vehicles
FR2718473A1 (en) Wooden safety rails attached to wooden posts for use on roads
FR2946712A1 (en) ROD FOR AERONAUTICAL CONSTRUCTION AND METHOD FOR MANUFACTURING SUCH ROD
EP0637538B1 (en) Energy absorption beam, especially for longitudianl or transverse chassis members of vehicles
EP0647824B1 (en) Heat exchanger used more particularly as oil cooler
FR2775766A1 (en) HEAT EXCHANGER WITH PROTECTED FINS, ESPECIALLY FOR MOTOR VEHICLES
FR2538030A1 (en) LONG TUBE HEAT EXCHANGER FOR HEAVY DUTY VEHICLES
FR2772904A1 (en) DEVICE FOR ASSEMBLING TWO EQUIPMENT ON A HEAT EXCHANGER, PARTICULARLY A MOTOR VEHICLE
FR2549945A1 (en) Heat exchanger, in particular radiator for motor vehicle engine cooling circuit
FR2538215A1 (en) GARDEN CHASSIS
FR2704635A1 (en) Automobile radiator and manufacturing process.
FR2787875A1 (en) Flexible tube heat exchanger esp for cooling motor vehicle engine has spacing supports to hold tubes in horizontal rows
FR2700610A1 (en) Heat exchanger tube bundle assembly for motor vehicle etc.
EP3610214A1 (en) Heat exchanger with protection device and associated manufacturing method
FR2526932A1 (en) HEAT EXCHANGER SUCH AS A MOTOR VEHICLE RADIATOR
FR2715217A1 (en) Heat exchanger tube, in particular for a motor vehicle, process for its conformation and heat exchanger comprising such tubes.

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): DE IT

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): DE IT

17P Request for examination filed

Effective date: 19860523

17Q First examination report despatched

Effective date: 19860929

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE IT

REF Corresponds to:

Ref document number: 3562825

Country of ref document: DE

Date of ref document: 19880623

ITF It: translation for a ep patent filed

Owner name: STUDIO TORTA SOCIETA' SEMPLICE

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
ITTA It: last paid annual fee
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 19980811

Year of fee payment: 14

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20000601