EP0473475B1 - Assembly comprising a header of a main heat exchanger and a second heat exchanger - Google Patents

Assembly comprising a header of a main heat exchanger and a second heat exchanger Download PDF

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Publication number
EP0473475B1
EP0473475B1 EP91402077A EP91402077A EP0473475B1 EP 0473475 B1 EP0473475 B1 EP 0473475B1 EP 91402077 A EP91402077 A EP 91402077A EP 91402077 A EP91402077 A EP 91402077A EP 0473475 B1 EP0473475 B1 EP 0473475B1
Authority
EP
European Patent Office
Prior art keywords
heat exchanger
water header
terminal portion
wall
assembly 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 - Lifetime
Application number
EP91402077A
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German (de)
French (fr)
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EP0473475A1 (en
Inventor
Gauyer Le
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Valeo Thermique Moteur SA
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Valeo Thermique Moteur SA
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Publication of EP0473475A1 publication Critical patent/EP0473475A1/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
    • F28F9/0246—Arrangements for connecting header boxes with flow lines
    • F28F9/0256—Arrangements for coupling connectors with flow lines
    • 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
    • F28F9/0234—Header boxes; End plates having a second heat exchanger disposed there within, e.g. oil cooler
    • 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
    • F28F9/0246—Arrangements for connecting header boxes with flow lines
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S165/00—Heat exchange
    • Y10S165/916—Oil cooler

Definitions

  • the invention relates to an assembly, in particular for motor vehicles, comprising a water box of a main heat exchanger and a secondary heat exchanger with two connection pipes.
  • the main heat exchanger is traversed by a first fluid, while the secondary heat exchanger is traversed by a second fluid which is cooled by the first fluid.
  • the first fluid is the coolant of a heat engine
  • the second fluid can be an engine lubricating oil, a gearbox oil or an oil from a converter. of couple.
  • the coolant not only performs its usual function of cooling the engine, but also an additional function of cooling a fluid linked to the operation of the vehicle.
  • the secondary heat exchanger is introduced through an open face of the water box and the latter is then connected to the body or to the bundle of the main heat exchanger.
  • the secondary heat exchanger comprises two connecting pipes, respectively serving for the inlet and the outlet of the second fluid, this pipe passing through sealing two orifices of a wall of the water box and serving for fixing and holding of the secondary heat exchanger inside the water box.
  • each connecting pipe comprises a threaded part which is screwed into a thread on the base.
  • the latter bears against the internal face of the wall of the water box with the interposition of two seals which are compressed under the action of the tightening force exerted by a nut which is screwed onto another threaded part of the tubing, pressing against the external face of the wall of the water box.
  • the object of the invention is in particular to remedy the above drawbacks.
  • connection tubing can be attached very simply to the secondary heat exchanger since it suffices to introduce, from the outside of the water box, the terminal part of the tubing successively into the orifice of the wall of the water box and in the drilling of the base, then to cause the radial expansion of this end part in the drilling by an appropriate tool.
  • connection tube comprises an intermediate part having a collar suitable for bearing against the wall of the water box, around the orifice and on the outside of the water box, this intermediate part extending, d 'one side, by the deformable end part and, on the opposite side, by a connecting piece.
  • the deformable end part is limited by an initially cylindrical external face and by an initially frustoconical internal face whose diameter decreases in the direction of the free end of the end part.
  • the initially cylindrical external face of the terminal part is connected, on the side opposite its free end, to a frustoconical external face whose diameter increases in the direction of the flange, while the initially frustoconical internal face of the part
  • the terminal is connected, on the side opposite its free end, to an internal cylindrical face of an intermediate passage which extends partly inside the tubing.
  • connection zone of smaller thickness is thus produced between the intermediate part and the terminal part of the connection tube, which facilitates its radial expansion during the crimping operation.
  • the end part is suitable for being radially expanded so that, after crimping, the initially frustoconical internal face of the end part becomes substantially cylindrical and thus extends the internal cylindrical face of the intermediate passages.
  • FIG. 1 shows a water box 10 of a main heat exchanger, for example the water box of a cooling radiator of an internal combustion engine.
  • the water box comprises a bottom wall 12 on which depend in particular two side walls 14 and 16 which define an open face limited by an edge 18 of generally rectangular outline.
  • the water box 10 is intended to be assembled by its edge 18 on a collecting plate 20 into which flow tubes 22 which form the bundle of the main heat exchanger and which, in the example, are traversed by the vehicle engine coolant.
  • the water box 10 internally contains a secondary heat exchanger 24 intended to allow the cooling of a fluid different from that circulating through the tubes 22.
  • the fluid circulating in the secondary heat exchanger 24 may be an oil gearbox lubrication.
  • the secondary heat exchanger 24 is constituted by a stack of half-blades 26, 28 which are brazed together and which define at their ends elementary collecting chambers 30 whose walls are perforated so that they communicate, on the one hand, with each other, and on the other hand, with two distributor tubes 32 forming a tie rod, only one of which is visible in the attached drawing.
  • the tube 32 comprises a cutout 34 extending over substantially its entire length and serving to communicate the fluid from one chamber to the other.
  • Each tube 32 is closed at one end by a cover 36 to which it is brazed and which is also brazed to the last half-blade 28a.
  • the tube is closed, at its other end, by a ring-shaped base 38, to which it is brazed, this base also being brazed on the first half-blade 26a.
  • the base 38 comprises a cylindrical bore 40 coaxial with the tube 32, the diameter of the bore 40 being less than the internal diameter of the distributor tube 32.
  • the base 38 has an annular face 42 capable of bearing against an internal face 44 of the wall 14.
  • the wall 14 comprises two passage orifices 46, only one of which is visible in the drawing, which have exactly the same center distance as that of the two holes 40 of the secondary heat exchanger 24.
  • the passage orifices 46 have an internal diameter greater than the internal diameter of the holes 40.
  • the wall 14 has an external face 48 which is provided with a projecting crown 50 which extends coaxially with the passage orifice 46.
  • the crown 50 comprises an external face 52 generally annular which opens onto an internal face 54 generally cylindrical and which is provided with two bosses 56 parallel to each other (FIG. 2).
  • the cylindrical face 54 and its two bosses 56 are connected to the bore 46 by a shoulder 58 of generally annular shape.
  • the device shown in Figure 1 further comprises two connecting pipes 60, only one of which is visible in the drawing, which seal the wall 14 and by which the secondary heat exchanger 24 is fixed inside the water box 10.
  • Each of the pipes 60 is attached to the heat exchanger 24 by being successively introduced through the orifices 46 of the wall 14 and into a bore 40 of a base 38 to which it is then fixed by crimping, as this will be described later.
  • connection tube 60 (FIG. 3) comprises an intermediate part 62 provided with a flange 64, this intermediate part being extended on one side by a deformable end part 66 and on the other side by a connecting end piece 68.
  • the end part 66 is limited by an external face 70 initially cylindrical and by an internal face 72 initially frustoconical, the diameter of which decreases in the direction of an annular face 74 which constitutes the free end of the terminal part 66.
  • the initially cylindrical external face 70 is connected, on the side opposite its free end, to an external frustoconical face 76 whose diameter increases in the direction of the flange 64.
  • the initially frustoconical internal face 72 of the terminal part 66 is connected, on the side opposite its free end 74, to a cylindrical internal face 78 forming an intermediate passage inside the tube 60.
  • the intermediate part 62 and the end part 66 are connected together by an annular zone 80 thinner.
  • the flange 64 has an annular face 82 which is connected with a peripheral face 84 of generally cylindrical shape provided with two flats 86.
  • the peripheral face 84 is connected, by an annular face 87, to a cylindrical face 88 which constitutes the external face of the end piece 68.
  • the latter has an internal thread 90 which is connected with the internal face 78 by means of a frustoconical part 92.
  • connection tube 60 is made of a deformable metal, for example aluminum, so that the end part 66 can be expanded radially by means of an appropriate tool, this expansion being favored by the presence of the zone 80 more thin.
  • a tool 94 having a rod 96 extended by a head 98.
  • the latter comprises a frustoconical part 98a whose end of smaller diameter (d) is connected to the rod 96 and the other end of larger diameter (D) is connected to a part 98b having substantially the shape of a spherical cap.
  • the diameter d of the tool corresponds approximately to the internal diameter of the terminal part 66 at its free end 74 while the diameter D of the tool corresponds approximately to the internal diameter of the intermediate passage defined by the cylindrical part 78.
  • the secondary heat exchanger 24 is introduced through the open face of the water box 10 and the heat exchanger 24 is positioned so that the holes 40 of the bases 38 are in the axial alignment of the orifices 46 of the wall 14.
  • the two tubes 60 are then introduced, either simultaneously or successively, by providing the tube with the tool 94 as shown in FIG. 3.
  • the end part 66 successively passes through the orifice of passage 46 of the wall 14 and the bore 40 of the base 38 until the annular face 82 of the flange 64 bears against the annular face 58 of the wall 14.
  • an O-ring seal 100 is placed in the annular space formed between the frustoconical external face 76 of the intermediate part 62, the orifice 46 of the wall 14 and the bearing face 42 of the base 38.
  • the flange 64 thus comes into abutment in its housing and flats 86 of the collere head cooperate with the bosses 56 of the crown 52 to prevent rotation of the tubing about its axis.
  • the O-ring 100 is compressed and provides sealing at the connection between the wall 14, the base 38 and the tube 60.
  • the base 38 being applied by its face 42 against the internal face 44 of the wall 14, there is exerted on the rod 96 of the tool 94 a traction in the direction of the arrow F.
  • the frustoconical part 98a of the head 98 causes thus the radial expansion of the terminal part 66 so that the internal face 72, which was initially frustoconical, becomes substantially cylindrical and in the extension of the face internal cylindrical 78 as shown in Figure 4.
  • the internal face 70, initially cylindrical, of the end part 66 is folded outwards and ensures the crimping of the end part 66 on the base 38.
  • the crimping operation must be carried out with a different tool.
  • the head of the tool should have a shape substantially different from that of the head 98, for example an olive shape.
  • the crimping would be carried out during the tool insertion movement, the latter then being pulled out by being moved in the direction of the arrow F.
  • the water box 10 can be connected by its open face to the collecting plate 20, in a manner known per se.

Description

L'invention concerne un ensemble, notamment pour véhicules automobiles, comprenant une boîte à eau d'un échangeur de chaleur principal et un échangeur de chaleur secondaire à deux tubulures de raccordement.The invention relates to an assembly, in particular for motor vehicles, comprising a water box of a main heat exchanger and a secondary heat exchanger with two connection pipes.

Dans les dispositifs connus de ce genre, l'échangeur de chaleur principal est parcouru par un premier fluide, tandis que l'échangeur de chaleur secondaire est parcouru par un second fluide qui est refroidi par le premier fluide.In known devices of this kind, the main heat exchanger is traversed by a first fluid, while the secondary heat exchanger is traversed by a second fluid which is cooled by the first fluid.

Dans l'application particulière aux véhicules automobiles, le premier fluide est le liquide de refroidissement d'un moteur thermique, tandis que le second fluide peut être une huile de lubrification du moteur, une huile de boîte de vitesses ou une huile d'un convertisseur de couple. Ainsi, le liquide de refroidissement assure non seulement sa fonction habituelle de refroidissement du moteur, mais aussi une fonction supplémentaire de refroidissement d'un fluide lié au fonctionnement du véhicule.In the specific application to motor vehicles, the first fluid is the coolant of a heat engine, while the second fluid can be an engine lubricating oil, a gearbox oil or an oil from a converter. of couple. Thus, the coolant not only performs its usual function of cooling the engine, but also an additional function of cooling a fluid linked to the operation of the vehicle.

Dans les dispositifs connus de ce genre, l'échangeur de chaleur secondaire est introduit par une face ouverte de la boîte à eau et cette dernière est ensuite raccordée au corps ou au faisceau de l'échangeur de chaleur principal.In known devices of this kind, the secondary heat exchanger is introduced through an open face of the water box and the latter is then connected to the body or to the bundle of the main heat exchanger.

L'échangeur de chaleur secondaire comprend deux tubulures de raccordement, servant respectivement à l'entrée et à la sortie du second fluide, cette tubulure traversant à étanchéité deux orifices d'une paroi de la boite à eau et servant à la fixation et au maintien de l'échangeur de chaleur secondaire à l'intérieur de la boîte à eau.The secondary heat exchanger comprises two connecting pipes, respectively serving for the inlet and the outlet of the second fluid, this pipe passing through sealing two orifices of a wall of the water box and serving for fixing and holding of the secondary heat exchanger inside the water box.

On connaît, d'après le document FR-A-2 549 593, un dispositif du genre précité dans lequel chacune des deux tubulures de raccordement est rapportée sur l'échangeur de chaleur secondaire par introduction dans un des orifices de la paroi de la boîte à eau et fixation à une embase de l'échangeur de chaleur secondaire.We know from the document FR-A-2 549 593, a device of the aforementioned type in which each of the two connection pipes is attached to the secondary heat exchanger by introduction into one of the orifices in the wall of the water box and attachment to a base of the secondary heat exchanger.

Dans ce dispositif connu, chaque tubulure de raccordement comprend une partie filetée qui est vissée dans un taraudage de l'embase. Cette dernière prend appui contre la face interne de la paroi de la boîte à eau avec interposition de deux joints d'étanchéité qui sont comprimés sous l'action de la force de serrage exercée par un écrou qui est vissé sur une autre partie filetée de la tubulure, en prenant appui contre la face externe de la paroi de la boîte à eau.In this known device, each connecting pipe comprises a threaded part which is screwed into a thread on the base. The latter bears against the internal face of the wall of the water box with the interposition of two seals which are compressed under the action of the tightening force exerted by a nut which is screwed onto another threaded part of the tubing, pressing against the external face of the wall of the water box.

Cette solution connue nécessite que la partie filetée de la tubulure s'étende en partie à l'intérieur de l'échangeur de chaleur secondaire qui doit alors posséder une largeur suffisante pour recevoir cette partie filetée. Ceci nécessite, par conséquent, d'utiliser un échangeur de chaleur secondaire encombrant et par voie de conséquence une boîte à eau encombrante. De plus, comme la partie filetée fait saillie à l'intérieur de l'échangeur de chaleur secondaire, celle-ci perturbe l'écoulement du fluide circulant dans cet échangeur de chaleur.This known solution requires that the threaded part of the tubing extends partly inside the secondary heat exchanger which must then have a sufficient width to receive this threaded part. This therefore requires the use of a bulky secondary heat exchanger and consequently a bulky water box. In addition, as the threaded part projects inside the secondary heat exchanger, this disturbs the flow of the fluid circulating in this heat exchanger.

En outre, cette solution connue est complexe à mettre en oeuvre puisqu'elle nécessite notamment deux opérations de vis sage pour chacune des deux tubulures.In addition, this known solution is complex to implement since it requires in particular two wise screw operations for each of the two pipes.

L'invention a notamment pour but de remédier aux inconvénients ci-dessus.The object of the invention is in particular to remedy the above drawbacks.

Elle propose à cet effet un ensemble tel que défini en revendication 1.To this end, it proposes a set as defined in claim 1.

Ainsi la tubulure de raccordement peut être rapportée de façon très simple sur l'échangeur de chaleur secondaire puisqu'il suffit d'introduire, à partir de l'extérieur de la boite à eau, la partie terminale de la tubulure successivement dans l'orifice de la paroi de la boîte à eau et dans le perçage de l'embase, puis de provoquer l'expansion radiale de cette partie terminale dans le perçage par un outillage approprié.Thus the connection tubing can be attached very simply to the secondary heat exchanger since it suffices to introduce, from the outside of the water box, the terminal part of the tubing successively into the orifice of the wall of the water box and in the drilling of the base, then to cause the radial expansion of this end part in the drilling by an appropriate tool.

Avantageusement, la tubulure de raccordement comprend une partie intermédiaire ayant une collerette propre à prendre appui contre la paroi de la boîte à eau, autour de l'orifice de passage et du côté extérieur de la boîte à eau, cette partie intermédiaire se prolongeant, d'un côté, par la partie terminale déformable et, du côté opposé, par un embout de liaison.Advantageously, the connection tube comprises an intermediate part having a collar suitable for bearing against the wall of the water box, around the orifice and on the outside of the water box, this intermediate part extending, d 'one side, by the deformable end part and, on the opposite side, by a connecting piece.

De ce fait, lors de l'opération de sertissage, la paroi de la boite à eau et chacune des embases se trouveront serrées l'une contre l'autre sous l'action combinée de la collerette, d'une part, et de la partie terminale ainsi déformée.Therefore, during the crimping operation, the wall of the water box and each of the bases will be tightened one against the other under the combined action of the flange, on the one hand, and the end part thus deformed.

Avantageusement, la partie terminale déformable est limitée par une face externe initialement cylindrique et par une face interne initialement tronconique dont le diamètre diminue en direction de l'extrémité libre de la partie terminale.Advantageously, the deformable end part is limited by an initially cylindrical external face and by an initially frustoconical internal face whose diameter decreases in the direction of the free end of the end part.

De préférence, la face externe initialement cylindrique de la partie terminale se raccorde, du côté opposé à son extrémité libre, à une face externe tronconique dont le diamètre va en croissant en direction de la collerette, tandis que la face interne initialement tronconique de la partie terminale se raccorde, du côté opposé à son extrémité libre, à une face cylindrique interne d'un passage intermédiaire qui s'étend en partie à l'intérieur de la tubulure.Preferably, the initially cylindrical external face of the terminal part is connected, on the side opposite its free end, to a frustoconical external face whose diameter increases in the direction of the flange, while the initially frustoconical internal face of the part The terminal is connected, on the side opposite its free end, to an internal cylindrical face of an intermediate passage which extends partly inside the tubing.

On réalise ainsi une zone annulaire de raccordement de plus faible épaisseur entre la partie intermédiaire et la partie terminale de la tubulure de raccordement, ce qui facilite son expansion radiale lors de l'opération de sertissage.An annular connection zone of smaller thickness is thus produced between the intermediate part and the terminal part of the connection tube, which facilitates its radial expansion during the crimping operation.

De préférence, la partie terminale est propre à être expansée radialement de telle sorte que, après sertissage, la face interne initialement tronconique de la partie terminale devienne sensiblement cylindrique et prolonge ainsi la face interne cylindrique des passages intermédiaires.Preferably, the end part is suitable for being radially expanded so that, after crimping, the initially frustoconical internal face of the end part becomes substantially cylindrical and thus extends the internal cylindrical face of the intermediate passages.

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

  • la Figure 1 est une vue en coupe d'une boîte à eau d'un échangeur de chaleur primaire contenant un échangeur de chaleur secondaire, le plan de coupe passant par l'axe d'une des deux tubulures de raccordement;
  • la Figure 2 est une vue de côté montrant la paroi de la boîte à eau de la Figure 1 et l'orifice de passage d'une tubulure;
  • la Figure 3 est une vue en coupe axiale d'une tubulure avant sertissage; et
  • la Figure 4 est une vue de détail à échelle agrandie de la Figure 1 montrant la même tubulure après sertissage.
In the description which follows, given solely by way of example, reference is made to the appended drawings, in which:
  • Figure 1 is a sectional view of a water box of a primary heat exchanger containing a secondary heat exchanger, the cutting plane passing through the axis of one of the two connecting pipes;
  • Figure 2 is a side view showing the wall of the water box of Figure 1 and the orifice for the passage of a tube;
  • Figure 3 is an axial sectional view of a tube before crimping; and
  • Figure 4 is a detail view on an enlarged scale of Figure 1 showing the same tubing after crimping.

On se réfère tout d'abord à la Figure 1 qui montre une boîte à eau 10 d'un échangeur de chaleur principal, par exemple la boîte à eau d'un radiateur de refroidissement d'un moteur à combustion interne. La boîte à eau comprend une paroi de fond 12 dont dépendent notamment deux parois latérales 14 et 16 qui définissent une face ouverte limitée par un bord 18 de contour général rectangulaire. La boîte à eau 10 est destinée à être assemblée par son bord 18 sur une plaque collectrice 20 dans laquelle débouchent des tubes de circulation 22 qui forment le faisceau de l'échangeur de chaleur principal et qui, dans l'exemple, sont parcourus par le liquide de refroidissement du moteur du véhicule.First of all, reference is made to FIG. 1 which shows a water box 10 of a main heat exchanger, for example the water box of a cooling radiator of an internal combustion engine. The water box comprises a bottom wall 12 on which depend in particular two side walls 14 and 16 which define an open face limited by an edge 18 of generally rectangular outline. The water box 10 is intended to be assembled by its edge 18 on a collecting plate 20 into which flow tubes 22 which form the bundle of the main heat exchanger and which, in the example, are traversed by the vehicle engine coolant.

La boîte à eau 10 contient intérieurement, un échangeur de chaleur secondaire 24 destiné à permettre le refroidissement d'un fluide différent de celui circulant par les tubes 22. Par exemple, le fluide circulant dans l'échangeur de chaleur secondaire 24 peut être une huile de lubrification de boîte de vitesses.The water box 10 internally contains a secondary heat exchanger 24 intended to allow the cooling of a fluid different from that circulating through the tubes 22. For example, the fluid circulating in the secondary heat exchanger 24 may be an oil gearbox lubrication.

Dans l'exemple représenté, l'échangeur de chaleur secondaire 24 est constitué par un empilage de demi-lames 26, 28 qui sont brasées entre elles et qui délimitent à leurs extrémités des chambres collectrices élémentaires 30 dont les parois sont perforées pour qu'elles communiquent, d'une part, entre elles, et d'autre part, avec deux tubes distributeurs 32 formant tirant, dont un seul est visible sur le dessin annexé. Le tube 32 comprend une découpe 34 s'étendant sur sensiblement toute sa longueur et servant à faire communiquer le fluide d'une chambre à l'autre. Chaque tube 32 est fermé à une extrémité par un couvercle 36 auquel il est brasé et qui est également brasé à la dernière demi-lame 28a. Le tube est fermé, à son autre extrémité, par une embase 38 en forme d'anneau, à laquelle il est brasé, cette embase étant également brasée sur la première demi-lame 26a. L'embase 38 comporte un perçage cylindrique 40 coaxial au tube 32, le diamètre du perçage 40 étant inférieur au diamètre interne du tube distributeur 32.In the example shown, the secondary heat exchanger 24 is constituted by a stack of half-blades 26, 28 which are brazed together and which define at their ends elementary collecting chambers 30 whose walls are perforated so that they communicate, on the one hand, with each other, and on the other hand, with two distributor tubes 32 forming a tie rod, only one of which is visible in the attached drawing. The tube 32 comprises a cutout 34 extending over substantially its entire length and serving to communicate the fluid from one chamber to the other. Each tube 32 is closed at one end by a cover 36 to which it is brazed and which is also brazed to the last half-blade 28a. The tube is closed, at its other end, by a ring-shaped base 38, to which it is brazed, this base also being brazed on the first half-blade 26a. The base 38 comprises a cylindrical bore 40 coaxial with the tube 32, the diameter of the bore 40 being less than the internal diameter of the distributor tube 32.

L'embase 38 comporte une face annulaire 42 propre à prendre appui contre une face interne 44 de la paroi 14. La paroi 14 comprend deux orifices de passage 46, dont un seul est visible sur le dessin, qui présentent exactement le même entraxe que celui des deux perçages 40 de l'échangeur de chaleur secondaire 24.The base 38 has an annular face 42 capable of bearing against an internal face 44 of the wall 14. The wall 14 comprises two passage orifices 46, only one of which is visible in the drawing, which have exactly the same center distance as that of the two holes 40 of the secondary heat exchanger 24.

Les orifices de passage 46 ont un diamètre interne supérieur au diamètre interne des perçages 40.The passage orifices 46 have an internal diameter greater than the internal diameter of the holes 40.

La paroi 14 comporte une face externe 48 qui est munie d'une couronne 50 en saillie qui s'étend coaxialement à l'orifice de passage 46. La couronne 50 comprend une face externe 52 généralement annulaire qui débouche sur une face interne 54 généralement cylindrique et qui est pourvue de deux bossages 56 parallèles entre eux (figure 2). La face cylindrique 54 et ses deux bossages 56 se raccordent au perçage 46 par un épaulement 58 de forme générale annulaire.The wall 14 has an external face 48 which is provided with a projecting crown 50 which extends coaxially with the passage orifice 46. The crown 50 comprises an external face 52 generally annular which opens onto an internal face 54 generally cylindrical and which is provided with two bosses 56 parallel to each other (FIG. 2). The cylindrical face 54 and its two bosses 56 are connected to the bore 46 by a shoulder 58 of generally annular shape.

Le dispositif représenté sur la Figure 1 comprend en outre deux tubulures de raccordement 60, dont une seule est visible sur le dessin, qui traversent à étanchéité la paroi 14 et par lesquelles l'échangeur de chaleur secondaire 24 est fixé à l'intérieur de la boîte à eau 10. Chacune des tubulures 60 est rapportée sur l'échangeur de chaleur 24 en étant introduite successivement à travers les orifices 46 de la paroi 14 et dans un perçage 40 d'une embase 38 auquel il est ensuite fixé par sertissage, comme cela sera décrit plus loin.The device shown in Figure 1 further comprises two connecting pipes 60, only one of which is visible in the drawing, which seal the wall 14 and by which the secondary heat exchanger 24 is fixed inside the water box 10. Each of the pipes 60 is attached to the heat exchanger 24 by being successively introduced through the orifices 46 of the wall 14 and into a bore 40 of a base 38 to which it is then fixed by crimping, as this will be described later.

La tubulure de raccordement 60 (Figure 3) comprend une partie intermédiaire 62 munie d'une collerette 64, cette partie intermédiaire étant prolongée d'un côté par une partie terminale déformable 66 et de l'autre côté par un embout de liaison 68.The connection tube 60 (FIG. 3) comprises an intermediate part 62 provided with a flange 64, this intermediate part being extended on one side by a deformable end part 66 and on the other side by a connecting end piece 68.

La partie terminale 66 est limitée par une face externe 70 initialement cylindrique et par une face interne 72 initialement tronconique dont le diamètre va en diminuant en direction d'une face annulaire 74 qui constitue l'extrémité libre de la partie terminale 66.The end part 66 is limited by an external face 70 initially cylindrical and by an internal face 72 initially frustoconical, the diameter of which decreases in the direction of an annular face 74 which constitutes the free end of the terminal part 66.

La face externe 70 initialement cylindrique se raccorde, du côté opposé à son extrémité libre, à une face tronconique externe 76 dont le diamètre va en augmentant en direction de la collerette 64. La face interne 72 initialement tronconique de la partie terminale 66 se raccorde, du côté opposé à son extrémité libre 74, à une face interne cylindrique 78 formant un passage intermédiaire à l'intérieur de la tubulure 60. De ce fait, la partie intermédiaire 62 et la partie terminale 66 se raccordent entre elles par une zone annulaire 80 de plus faible épaisseur.The initially cylindrical external face 70 is connected, on the side opposite its free end, to an external frustoconical face 76 whose diameter increases in the direction of the flange 64. The initially frustoconical internal face 72 of the terminal part 66 is connected, on the side opposite its free end 74, to a cylindrical internal face 78 forming an intermediate passage inside the tube 60. As a result, the intermediate part 62 and the end part 66 are connected together by an annular zone 80 thinner.

La collerette 64 comporte une face annulaire 82 qui se raccorde avec une face périphérique 84 de forme générale cylindrique pourvue de deux méplats 86. La face périphérique 84 se raccorde, par une face annulaire 87, à une face cylindrique 88 qui constitue la face externe de l'embout 68. Ce dernier possède un taraudage interne 90 qui se raccorde avec la face interne 78 par l'intermédiaire d'une partie tronconique 92.The flange 64 has an annular face 82 which is connected with a peripheral face 84 of generally cylindrical shape provided with two flats 86. The peripheral face 84 is connected, by an annular face 87, to a cylindrical face 88 which constitutes the external face of the end piece 68. The latter has an internal thread 90 which is connected with the internal face 78 by means of a frustoconical part 92.

La tubulure de raccordement 60 est réalisée dans un métal déformable, par exemple en aluminium, de telle sorte que la partie terminale 66 puisse être expansée radialement au moyen d'un outillage approprié, cette expansion étant favorisée par la présence de la zone 80 de plus faible épaisseur.The connection tube 60 is made of a deformable metal, for example aluminum, so that the end part 66 can be expanded radially by means of an appropriate tool, this expansion being favored by the presence of the zone 80 more thin.

On a représenté, en traits fantômes sur la Figure 3, un outil 94 comportant une tige 96 prolongée par une tête 98. Cette dernière comprend une partie tronconique 98a dont l'extrémité de plus faible diamètre (d) est reliée à la tige 96 et dont l'autre extrémité de plus grand diamètre (D) est reliée à une partie 98b ayant sensiblement la forme d'une calotte sphérique.There is shown, in phantom lines in Figure 3, a tool 94 having a rod 96 extended by a head 98. The latter comprises a frustoconical part 98a whose end of smaller diameter (d) is connected to the rod 96 and the other end of larger diameter (D) is connected to a part 98b having substantially the shape of a spherical cap.

Le diamètre d de l'outil correspond approximativement au diamètre interne de la partie terminale 66 au niveau de son extrémité libre 74 tandis que le diamètre D de l'outil correspond sensiblement au diamètre interne du passage intermédiaire défini par la partie cylindrique 78.The diameter d of the tool corresponds approximately to the internal diameter of the terminal part 66 at its free end 74 while the diameter D of the tool corresponds approximately to the internal diameter of the intermediate passage defined by the cylindrical part 78.

Dans l'exemple représenté, la tige 96 de l'outil 94 est introduite par l'extrémité libre de la partie terminale 66 dans le sens indiqué par la flèche F, de telle sorte que la tête 98 fasse saillie au-delà de l'extrémité libre de la partie terminale 66.In the example shown, the rod 96 of the tool 94 is introduced by the free end of the terminal part 66 in the direction indicated by the arrow F, so that the head 98 protrudes beyond the free end of the terminal part 66.

On décrira maintenant la manière dont on effectue la fixation et le raccordement de l'échangeur de chaleur secondaire 24 à l'intérieur de la boîte à eau 10.We will now describe the manner in which the attachment and connection of the secondary heat exchanger 24 is carried out inside the water box 10.

On introduit l'échangeur de chaleur secondaire 24 par la face ouverte de la boîte à eau 10 et on positionne l'échangeur de chaleur 24 de telle sorte que les perçages 40 des embases 38 se trouvent dans l'alignement axial des orifices 46 de la paroi 14. On introduit ensuite les deux tubulures 60, soit simultanément, soit successivement, en munissant la tubulure de l'outil 94 telle que représentée sur la Figure 3. Lors de l'introduction, la partie terminale 66 traverse successivement l'orifice de passage 46 de la paroi 14 et le perçage 40 de l'embase 38 jusqu'à ce que la face annulaire 82 de la collerette 64 prenne appui contre la face annulaire 58 de la paroi 14. Au préalable, un joint torique d'étanchéité 100 est placé dans l'espace annulaire menagée entre la face externe tronconique 76 de la partie intermédiaire 62, l'orifice 46 de la paroi 14 et la face d'appui 42 de l'embase 38. La collerette 64 vient ainsi en butée dans son logement et les méplats 86 de la collerette coopèrent avec les bossages 56 de la couronne 52 pour empêcher la rotation de la tubulure autour de son axe. Dans la position de butée ainsi obtenue, le joint torique 100 est comprimé et assure l'étanchéité au niveau du raccordement entre la paroi 14, l'embase 38 et la tubulure 60.The secondary heat exchanger 24 is introduced through the open face of the water box 10 and the heat exchanger 24 is positioned so that the holes 40 of the bases 38 are in the axial alignment of the orifices 46 of the wall 14. The two tubes 60 are then introduced, either simultaneously or successively, by providing the tube with the tool 94 as shown in FIG. 3. During the introduction, the end part 66 successively passes through the orifice of passage 46 of the wall 14 and the bore 40 of the base 38 until the annular face 82 of the flange 64 bears against the annular face 58 of the wall 14. Beforehand, an O-ring seal 100 is placed in the annular space formed between the frustoconical external face 76 of the intermediate part 62, the orifice 46 of the wall 14 and the bearing face 42 of the base 38. The flange 64 thus comes into abutment in its housing and flats 86 of the collere head cooperate with the bosses 56 of the crown 52 to prevent rotation of the tubing about its axis. In the abutment position thus obtained, the O-ring 100 is compressed and provides sealing at the connection between the wall 14, the base 38 and the tube 60.

L'embase 38 étant appliquée par sa face 42 contre la face interne 44 de la paroi 14, on exerce sur la tige 96 de l'outil 94 une traction dans la direction de la flèche F. La partie tronconique 98a de la tête 98 provoque ainsi l'expansion radiale de la partie terminale 66 si bien que la face interne 72, qui était initialement tronconique, devient sensiblement cylindrique et dans le prolongement de la face interne cylindrique 78 comme montré à la Figure 4.The base 38 being applied by its face 42 against the internal face 44 of the wall 14, there is exerted on the rod 96 of the tool 94 a traction in the direction of the arrow F. The frustoconical part 98a of the head 98 causes thus the radial expansion of the terminal part 66 so that the internal face 72, which was initially frustoconical, becomes substantially cylindrical and in the extension of the face internal cylindrical 78 as shown in Figure 4.

La face interne 70, initialement cylindrique, de la partie terminale 66 est rabattue vers l'extérieur et assure le sertissage de la partie terminale 66 sur l'embase 38.The internal face 70, initially cylindrical, of the end part 66 is folded outwards and ensures the crimping of the end part 66 on the base 38.

En variante, l'opération de sertissage doit être réalisée avec un outil différent.As a variant, the crimping operation must be carried out with a different tool.

Par exemple, on pourrait d'abord introduire la partie terminale 66 de la tubulure 60 au travers de l'orifice 46 et du perçage 40 et introduire ensuite un outil à partir de l'extrémité opposée de la tubulure, dans une direction opposée à celle représentée par la flèche F. Dans ce cas, il faudrait que la tête de l'outil ait une forme sensiblement différente de celle de la tête 98, par exemple une forme d'olive. En ce cas, le sertissage serait effectué lors du mouvement d'introduction de l'outil, ce dernier étant ensuite ressorti en étant déplacé dans le sens de la flèche F.For example, one could first introduce the end portion 66 of the tubing 60 through the orifice 46 and the bore 40 and then introduce a tool from the opposite end of the tubing, in a direction opposite to that represented by the arrow F. In this case, the head of the tool should have a shape substantially different from that of the head 98, for example an olive shape. In this case, the crimping would be carried out during the tool insertion movement, the latter then being pulled out by being moved in the direction of the arrow F.

Après mise en place des deux tubulures 60, la boîte à eau 10 peut être raccordée par sa face ouverte sur la plaque collectrice 20, de manière en soi connue.After the two pipes 60 have been put in place, the water box 10 can be connected by its open face to the collecting plate 20, in a manner known per se.

Bien entendu, l'invention n'est pas limitée à la forme de réalisation précédemment décrite et illustrée sur les dessins. En particulier, au lieu d'utiliser un échangeur de chaleur secondaire à lames, on pourrait utiliser un échangeur de chaleur d'un autre type, par exemple de type cylindrique. De même, il n'a été fait mention que d'un seul joint torique 100, mais il peut être prévu qu'un second joint d'étanchéité soit disposé entre la face interne 44 et l'embase 42.Of course, the invention is not limited to the embodiment previously described and illustrated in the drawings. In particular, instead of using a secondary plate heat exchanger, a heat exchanger of another type, for example of the cylindrical type, could be used. Likewise, only one O-ring 100 has been mentioned, but provision may be made for a second seal to be arranged between the internal face 44 and the base 42.

Claims (9)

  1. An assembly comprising a water header of a main heat exchanger and a secondary heat exchanger (24) with two coupling tubes (60), which extend sealingly through a wall (15) of the water header (10), and through which the secondary heat exchanger is secured in the water header, with each of the tubes (60) being attached on the secondary heat exchanger by introduction into an access hole (46) of the wall (14) of the water header and by being fastened in a base (38) of the secondary heat exchanger (24), by radial expansion of a deformable terminal portion (66) of each coupling tube (60) into a hole (40) of the said base (38).
  2. An assembly according to Claim 1, characterised in that each coupling tube (60) includes an intermediate portion (62) having a collar (64) which is adapted to bear against the wall (14) of the water header (10), around the access hole (46), on the outer side of the water header, the said intermediate portion (62) being extended on one side by the deformable terminal portion (66), and on the opposite side by a coupling sleeve (68).
  3. An assembly according to Claim 2, characterised in that the terminal portion (66) is delimited by an initially cylindrical outer face (70) and by an inner face (72), initially frusto-conical, the diameter of which decreases towards the free end (74) of the terminal portion (66).
  4. An assembly according to Claim 3, characterised in that the initially cylindrical outer face (70) of the terminal portion (66) is joined, on the opposite side from its free end (74), to a frusto-conical outer face (76), the diameter of which increases towards the collar (64), and in that the initially frusto-conical inner face (72) of the terminal portion (66) is joined, on the side opposite to its free end (74), to a cylindrical internal face (78) of an intermediate passage which extends from the interior of the tube (60), which enables an annular junction zone (80), of smaller thickness, to be formed between the intermediate portion (62) and the terminal portion (66).
  5. An assembly according to Claim 4, characterised in that the terminal portion (66) is adapted to be expanded radially in such a way that, after being upset, the initially frusto-conical inner face (72) of the terminal portion (66) becomes substantially cylindrical so as to extend the cylindrical inner face (78) of the intermediate passage.
  6. An assembly according to Claim 4 or Claim 5, characterised in that it includes an O-ring seal (100) fitted into an annular space formed between the frusto-conical outer face (76) of the intermediate portion (62), the access hole (46) of the wall (14) of the water header, and the base (38).
  7. An assembly according to one of Claims 1 to 6, characterised in that each coupling tube (60) is formed of a deformable metal, in particular aluminium.
  8. An assembly according to Claim 2, characterised in that the collar (64) is adapted to be received in a recess (54, 56, 58) of matching form, which the wall (14) of the water header (10) includes around the access hole (46), on the outer side of the water header.
  9. An assembly according to Claim 8, characterised in that the collar (64) has at least one flat (86) adapted to cooperate with a projection (56) of the recess, being of corresponding form, whereby to immobilise the tube (60) against rotation in the wall (14) of the water header.
EP91402077A 1990-07-31 1991-07-25 Assembly comprising a header of a main heat exchanger and a second heat exchanger Expired - Lifetime EP0473475B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9009767A FR2665524B1 (en) 1990-07-31 1990-07-31 WATER BOX OF A MAIN HEAT EXCHANGER, ESPECIALLY FOR MOTOR VEHICLES, CONTAINING A SECONDARY HEAT EXCHANGER.
FR9009767 1990-07-31

Publications (2)

Publication Number Publication Date
EP0473475A1 EP0473475A1 (en) 1992-03-04
EP0473475B1 true EP0473475B1 (en) 1994-12-14

Family

ID=9399277

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91402077A Expired - Lifetime EP0473475B1 (en) 1990-07-31 1991-07-25 Assembly comprising a header of a main heat exchanger and a second heat exchanger

Country Status (5)

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US (1) US5151157A (en)
EP (1) EP0473475B1 (en)
DE (1) DE69105874T2 (en)
ES (1) ES2068534T3 (en)
FR (1) FR2665524B1 (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5513700A (en) * 1994-07-29 1996-05-07 Ford Motor Company Automotive evaporator manifold
US6109344A (en) * 1998-05-18 2000-08-29 Lattimore & Tessmer, Inc. Heat exchanger with an integrated tank and head sheet
US6347663B1 (en) * 2000-03-13 2002-02-19 Modine Manufacturing Company Fitting/manifold assembly and method for a heat exchanger
US6776225B2 (en) * 2002-06-13 2004-08-17 Delphi Technologies, Inc. Heat exchanger assembly
JP2005172270A (en) * 2003-12-08 2005-06-30 Calsonic Kansei Corp Radiator incorporated with oil cooler
US7213640B2 (en) * 2005-04-07 2007-05-08 Delphi Technologies, Inc. Heat exchanger assembly having fitting secured thereto and method of securing the same
US7188664B2 (en) * 2005-04-21 2007-03-13 Delphi Technologies, Inc. Aluminum radiator tank with oil cooler clinch fitting
JP4722577B2 (en) * 2005-06-21 2011-07-13 カルソニックカンセイ株式会社 Oil cooler
EP1739380B1 (en) * 2005-06-21 2012-03-21 Calsonic Kansei Corporation Oil cooler
KR20220104441A (en) * 2021-01-18 2022-07-26 현대자동차주식회사 Integrated module for radiator and intercooler and vehicle including the same

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2269895A (en) * 1939-07-05 1942-01-13 Foster Arthur Sydney Pipe joint
US2566502A (en) * 1945-04-13 1951-09-04 Mueller Co Corporation stop and method of installing
US3216492A (en) * 1961-07-03 1965-11-09 John M Weaver Exchange unit
US4227570A (en) * 1979-10-01 1980-10-14 Caterpillar Tractor Co. Heat exchange structure
GB2122706B (en) * 1982-06-19 1986-08-13 Unipart Group Ltd Heat exchanger coupling
FR2549593B1 (en) * 1983-07-22 1987-04-10 Chausson Usines Sa HEAT EXCHANGER WATER BOX CONTAINING A SECONDARY HEAT EXCHANGER
US4538679A (en) * 1984-11-19 1985-09-03 John T. Hoskins Fluid coupling assembly
FR2579309B1 (en) * 1985-03-21 1989-04-07 Valeo WATER BOX OF A HEAT EXCHANGER FOR A MOTOR VEHICLE CONTAINING AN OIL RADIATOR

Also Published As

Publication number Publication date
US5151157A (en) 1992-09-29
EP0473475A1 (en) 1992-03-04
DE69105874T2 (en) 1995-04-27
ES2068534T3 (en) 1995-04-16
DE69105874D1 (en) 1995-01-26
FR2665524B1 (en) 1992-10-16
FR2665524A1 (en) 1992-02-07

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