EP0290340A1 - Water container for a motor vehicle cooling radiator comprising an oil exchanger - Google Patents

Water container for a motor vehicle cooling radiator comprising an oil exchanger Download PDF

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Publication number
EP0290340A1
EP0290340A1 EP88401081A EP88401081A EP0290340A1 EP 0290340 A1 EP0290340 A1 EP 0290340A1 EP 88401081 A EP88401081 A EP 88401081A EP 88401081 A EP88401081 A EP 88401081A EP 0290340 A1 EP0290340 A1 EP 0290340A1
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EP
European Patent Office
Prior art keywords
water box
container
wall
annex
oil exchanger
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.)
Withdrawn
Application number
EP88401081A
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German (de)
French (fr)
Inventor
Pierre Trin
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
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Filing date
Publication date
Application filed by Valeo SE filed Critical Valeo SE
Publication of EP0290340A1 publication Critical patent/EP0290340A1/en
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F21/00—Constructions of heat-exchange apparatus characterised by the selection of particular materials
    • F28F21/06—Constructions of heat-exchange apparatus characterised by the selection of particular materials of plastics material
    • F28F21/067—Details
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/02—Header boxes; End plates
    • F28F9/0234—Header boxes; End plates having a second heat exchanger disposed there within, e.g. oil cooler

Definitions

  • the invention relates to a water box device for a motor vehicle cooling radiator, this device containing an oil exchanger immersed in the cooling liquid circulating in the cooling radiator.
  • the oil exchanger is placed in the water box before mounting it on the end of a bundle of tubes or of an exchanger body of the cooling radiator, the exchanger of oil being introduced into the water box through the open face of the latter which will cover the end of the body or of the bundle of tubes of the cooling radiator.
  • the oil exchanger usually includes two connecting pipes which seal through a wall of the water box and which are used for fixing and by hand. from the oil exchanger in the water box. These pipes are intended to connect the oil radiator to the lubricating oil circuit of the engine and / or of the gearbox, for example of an automatic gearbox.
  • this water box has a width at least substantially equal to the total size of the oil exchanger in the same direction , that is to say in general to the width of the oil exchanger increased by the length of the pipes.
  • the water box must have a relatively large width which is much greater than the thickness or the corresponding dimension of the tube bundles or of the exchanger bodies of standard cooling radiators.
  • the object of the invention is in particular to avoid the abovementioned drawbacks.
  • the invention relates to a water box device for a motor vehicle cooling radiator, in which an oil exchanger with two inlet and outlet pipes is immersed in the coolant which circulates in the radiator. cooling.
  • this device comprises an annex container which communicates with the water box and which contains the oil exchanger, the inlet and outlet pipes of this oil exchanger passing through a sealed wall of the annex container and used for fixing and maintaining the oil exchanger in the annex container.
  • the water box device comprises a part forming a water box and a part forming an annex container and containing the oil exchanger.
  • This particular characteristic of the device of the invention allows the same collectors and the same seals to be used as in the case where the water box is of the usual type and does not contain an oil exchanger. In addition, this allows the same oil coolers to be used as those which were previously fitted in large water boxes.
  • the water box and the annex container form a one-piece assembly which can be molded from plastic.
  • the water box and the annexed container are generally elongated and with general directions parallel to each other.
  • the general direction of the annex container is then parallel to the two long sides of the open side of the water box.
  • the wall of the auxiliary container which is crossed by the pipes of the oil exchanger, is of general shape cylindrical and has one end closed by a bottom wall and another open end suitable for being closed by a cover, after installation of the oil exchanger in the annexed container.
  • the open end of the annex container must have a width dimension greater than the size, in the same direction, of the oil exchanger and its pipes.
  • the width dimension of the annex container which must be adapted to the overall dimensions of the oil radiator, the width of the water box being adapted only to the thickness or the width of the tube bundle or of the exchanger body forming part of the cooling radiator.
  • the cylindrical wall of the annex container has a generally circular section and comprises a flat wall portion which extends parallel to the axis of the cylinder and which provides two passage openings for both oil exchanger pipes.
  • each tube can include an annular flange applied to the internal face of the aforementioned flat wall portion, and an end portion with an external thread which extends on the other side of the wall, through the 'passage opening, and which receives a nut to tighten this portion of planar wall on the annular rim.
  • the water box and the annex container communicate with each other by two communication passages distant from each other.
  • the invention further provides that these two passages of communication lead respectively into two separate compartments of the water box, which are separated by an internal partition of the water box.
  • FIGS 1 to 3 show a water box device 10 according to the invention comprising a water box 12 and an annex container 14 which communicate with each other, the annex container containing an oil exchanger 16 .
  • the water box 12 is conventionally mounted at one end of a bundle of tubes 18 by means of a manifold or tube plate 20 (FIG. 1).
  • the bundle 18 comprises, in a conventional manner, a set of parallel tubes 22 which pass through a set of fins 24 which are parallel to each other and perpendicular to the direction tion of the tubes 22.
  • One end of the tubes 22 is mounted in leaktight manner in holes 26 (FIG. 1) which the collector 20 spares.
  • a water box 28 provided with an inlet pipe 30, the water box 12 of the device 10 being provided with an outlet pipe 32 (FIG. 3).
  • the water box 12 comprises a side wall 34 of semi-circular cross section (FIG. 2) which is connected to a peripheral rim 36 of rectangular shape comprising two long sides 38 and two short sides 40.
  • the rim 36 thus delimits with the wall lateral 34 an open face of rectangular shape which is suitable for being tightly connected to the collector 20, for example by welding, if this collector and the water box are made of plastic.
  • the annex container 14 has the general shape of a cylinder whose axis 42 (FIGS. 1 and 2) extends parallel to the two long sides 38 delimiting the open face of the water box 12.
  • the annex container 14 has a wall lateral cylindrical 44 of generally circular section and axis 42.
  • the wall 44 has an end 46 closed by a bottom wall 48 and an open end 50 suitable for being closed by a cover 52, after the exchanger d oil 16 in the annex container 14.
  • the cylindrical wall 44 of the annex container 14 comprises a flat wall portion 54 which extends parallel to the axis 42 of the cylinder and which provides two passage orifices 56 for the two pipes 58 for connecting the oil exchanger to an oil circuit.
  • the oil exchanger 16 comprises, in a conventional manner, two coaxial cylindrical walls 60 and 62 (FIG. 2) connected with sealing at their ends, the two pipes 58 being arranged in the vicinity of these axial ends and opening into the annular space between the cylindrical walls 60 and 62.
  • Each of the pipes 58 is oriented perpendicular to the axis of the oil exchanger 16 which, in the position of the Figure 2, coincides with the axis 42 of the annex container 14.
  • Each of the pipes 58 comprises an annular flange 64 applied to the internal face of the flat wall portion 54 and an end portion with an external thread 66 which extends on the other side of the wall portion 54, through the orifice 56, and which receives a nut 68 tightening the wall portion 54 on the annular flange 64. ( Figure 2).
  • each annular rim 64 provides an annular groove suitable for receiving a seal 70 to ensure the leaktight passage of the two pipes 58 through the wall 44 of the annex container 14.
  • the open end 50 of the annex container 14 has the same cross section as the wall 44. This end has a width dimension greater than the size, in the same direction, of the oil exchanger 16 and its pipes 58 , which allows easy mounting of the oil exchanger 16 inside the annex container 14. For this, it suffices to introduce the exchanger 16 axially into the annex container 14 so that the cylindrical wall 60 of the latter is in the position shown in phantom lines in FIG. 2, the pipes 58 being oriented perpendicular to the wall portion 54. When these two pipes are opposite the two corresponding orifices 56, it suffices to move the exchanger 16 so that the two pipes 58 pass through the two corresponding orifices 56, and then put the two nuts 68 in place.
  • the water box 12 and the annex container 14 form a one-piece assembly produced by molding a plastic material.
  • Two parallel cylindrical conduits 72 and 74 connect the side wall 34 of the box to each other. water and the wall 44 of the annex container 14. These two cylindrical conduits are also formed in one piece with the water box and the annex container and extend parallel to each other and perpendicular to the open face of the water box 12 and perpendicular to the axis 42 of the annex container 14.
  • the cylindrical conduits 72 and 74 thus define two communication passages between the interior of the water box 12 and the interior of the annex container 14.
  • the water box 12 has two internal partitions 76 and 78 which divide the interior of the water box 12 into three compartments 80, 82 and 84.
  • the compartment 80 communicates with the container annex 14 via the cylindrical conduit 72.
  • the compartment 82 communicates with the annex container 14 through the cylindrical conduit 74.
  • the compartment 84 is in communication with the outlet pipe 32 of the water box 12.
  • the water box 28 includes an internal partition 86 which divides this water box into a compartment 88 communicating with the inlet pipe 30 and another compartment 90.
  • the cooling radiator shown in Figure 3 operates as follows.
  • the coolant for example a mixture of water and glycol, enters the cooling radiator through the inlet pipe 30 and thus enters the compartment 88. From there it flows through part of the tubes of the beam to reach compartment 80, pass through conduit 72 and enter the interior of the annex container to cool the oil which flows through the oil exchanger 16.
  • the coolant then leaves the annex container 14 passing through the duct 74 to reach the compartment 82. From there, it flows through another part of the bundle tubes to reach the compartment 90. Then it leaves compartment 90, passes through another part of the bundle tubes, reaches compartment 84 and leaves the water box 12 through the tube 32.
  • the circulation of the coolant in this radiator takes place like a Z by forming a "tri-circuit".
  • the water box 28 has an inlet nozzle 92 and an outlet nozzle 94.
  • An internal partition 96 divides the water box into two compartments 98 and 100 which communicate respectively with the pipes 92 and 94.
  • the water box 12 is divided into two compartments 102 and 104 by a partition 106.
  • the annex container 14 thus communicates with the compartment 102 by the conduit 72 and with the compartment 104 by the conduit 74.
  • the operation of the cooling radiator of the Figure 4 is as follows.
  • the coolant reaches the compartment 98 through the tubing 92, passes through part of the tubes of the bundle 18, reaches the compartment 102 and then enters the annex container 14 through the conduit 72. In this container, it cools the circulating oil in the exchanger 16.
  • the coolant then leaves the annex container, passing successively through the conduit 74, in the compartment 104, through the other part of the tubes of the bundle 18 to reach the compartment 100 which it leaves by the tubing 94.
  • the cooling circuit is thus of the "bi-circuit" or U-shaped type.
  • the cover 52 is fixed in leaktight manner to the open end 50 of the annex container 14, for example by welding or else by using a crimping ring.
  • the cover 52 can be a simple plug or else constitute, as shown in FIG. 1, a filling base comprising its own plug 108, thus making it possible to fill the cooling radiator with coolant via the annex container 14.
  • the water box device of the invention offers the additional advantage of being able to mount the oil exchanger in the annex container either before mounting, or after mounting the water box on the tube bundle.
  • the water box device perfectly withstands the pressure of the coolant.
  • the longitudinal size of the exchanger can be limited.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)

Abstract

The device consists of a header box (12) communicating with an appended receptacle (14) which contains an oil exchanger (16). The input and output pipes (58) of the oil exchanger pass through a sealed joint in a wall (44) of the appended receptacle and are used to fix and support the oil exchanger in the appended receptacle. <??>Application especially to the cooling of the lubricating oil in the engine and/or the gear box of motor vehicles. <IMAGE>

Description

L'invention concerne un dispositif de boîte à eau pour un radiateur de refroidissement d'un véhicule automobile, ce dispositif contenant un échangeur d'huile immergé dans le liquide de refroidissement circulant dans le radiateur de refroidissement.The invention relates to a water box device for a motor vehicle cooling radiator, this device containing an oil exchanger immersed in the cooling liquid circulating in the cooling radiator.

On connait déjà des dispositifs de ce type qui sont destinés à refroidir, par le liquide de refroidissement, l'huile qui circule dans l'échangeur d'huile.Devices of this type are already known which are intended to cool, by the coolant, the oil which circulates in the oil exchanger.

Dans ces dispositifs connus, l'échangeur d'huile est placé dans la boîte à eau avant montage de celle-ci sur l'extré­mité d'un faisceau de tubes ou d'un corps d'échangeur du radiateur de refroidissement, l'échangeur d'huile étant introduit dans la boîte à eau par la face ouverte de celle-­ci qui viendra coiffer l'extrémité du corps ou du faisceau de tubes du radiateur de refroidissement.In these known devices, the oil exchanger is placed in the water box before mounting it on the end of a bundle of tubes or of an exchanger body of the cooling radiator, the exchanger of oil being introduced into the water box through the open face of the latter which will cover the end of the body or of the bundle of tubes of the cooling radiator.

L'échangeur d'huile comprend habituellement deux tubulures de raccordement qui traversent à étanchéité une paroi de la boîte à eau et qui servent à la fixation et au main­ tien de l'échangeur d'huile dans la boîte à eau. Ces tubu­lures sont destinées à raccorder le radiateur d'huile au circuit d'huile de lubrification du moteur et/ou de la boîte de vitesses, par exemple d'une boîte de vitesses automatique.The oil exchanger usually includes two connecting pipes which seal through a wall of the water box and which are used for fixing and by hand. from the oil exchanger in the water box. These pipes are intended to connect the oil radiator to the lubricating oil circuit of the engine and / or of the gearbox, for example of an automatic gearbox.

Pour que le montage de l'échangeur d'huile dans la boîte à eau soit possible, il est nécessaire que cette boîte à eau présente une largeur au moins sensiblement égale à l'encombrement total de l'échangeur d'huile dans la même direction, c'est-à-dire en général à la largeur de l'échangeur d'huile augmentée de la longueur des tubu­lures.For the mounting of the oil exchanger in the water box is possible, it is necessary that this water box has a width at least substantially equal to the total size of the oil exchanger in the same direction , that is to say in general to the width of the oil exchanger increased by the length of the pipes.

Par conséquent, la boîte à eau doit avoir une largeur relativement importante qui est largement supérieure à l'épaisseur ou à la dimension correspondante des faisceaux de tubes ou des corps d'échangeur des radiateurs de refroi­dissement standards.Consequently, the water box must have a relatively large width which is much greater than the thickness or the corresponding dimension of the tube bundles or of the exchanger bodies of standard cooling radiators.

Cela conduit ainsi à utiliser des boîtes à eau spéciales, ainsi que des collecteurs et des joints d'étanchéité spé­ciaux, à la place des boîtes à eau, des collecteurs et des joints d'étanchéité usuels lorsqu'on veut disposer un échangeur d'huile à l'intérieur d'une boîte à eau.This leads to the use of special water boxes, as well as special collectors and seals, instead of the usual water boxes, collectors and seals when an oil exchanger is to be arranged. inside a water box.

L'invention a notamment pour but d'éviter les inconvé­nients précités.The object of the invention is in particular to avoid the abovementioned drawbacks.

Elle a encore pour but de proposer un dispositif de boîte à eau dans lequel l'échangeur d'huile peut être monté d'une façon particulièrement simple.It also aims to provide a water box device in which the oil exchanger can be mounted in a particularly simple manner.

L'invention concerne un dispositif de boîte à eau pour un radiateur de refroidissement d'un véhicule automobile, dans lequel un échangeur d'huile à deux tubulures d'entrée et de sortie est immergé dans le liquide de refroidisse­ment qui circule dans le radiateur de refroidissement.The invention relates to a water box device for a motor vehicle cooling radiator, in which an oil exchanger with two inlet and outlet pipes is immersed in the coolant which circulates in the radiator. cooling.

Selon une caractéristique essentielle de l'invention, ce dispositif comprend un récipient annexe qui communi­que avec la boîte à eau et qui contient l'échangeur d'hui­le, les tubulures d'entrée et de sortie de cet échangeur d'huile traversant à étanchéité une paroi du récipient annexe et servant à la fixation et au maintien de l'échan­geur d'huile dans le récipient annexe.According to an essential characteristic of the invention, this device comprises an annex container which communicates with the water box and which contains the oil exchanger, the inlet and outlet pipes of this oil exchanger passing through a sealed wall of the annex container and used for fixing and maintaining the oil exchanger in the annex container.

Ainsi, conformément à l'invention, le dispositif de boîte à eau comprend une partie formant boîte à eau et une partie formant récipient annexe et contenant l'échangeur d'huile.Thus, in accordance with the invention, the water box device comprises a part forming a water box and a part forming an annex container and containing the oil exchanger.

Cette caractéristique particulière du dispositif de l'in­vention permet d'utiliser les mêmes collecteurs et les mêmes joints d'étanchéité que dans le cas où la boîte à eau est du type usuel et ne contient pas d'échangeur d'huile. En outre, cela permet d'utiliser les mêmes radia­teurs d'huile que ceux qui étaient auparavant montés dans les boîtes à eau larges.This particular characteristic of the device of the invention allows the same collectors and the same seals to be used as in the case where the water box is of the usual type and does not contain an oil exchanger. In addition, this allows the same oil coolers to be used as those which were previously fitted in large water boxes.

Selon une autre caractéristique de l'invention, la boîte à eau et le récipient annexe forment un ensemble monobloc pouvant être moulé en matière plastique.According to another characteristic of the invention, the water box and the annex container form a one-piece assembly which can be molded from plastic.

De préférence, la boîte à eau et le récipient annexe sont de forme générale allongée et à directions générales paral­lèles entre elles.Preferably, the water box and the annexed container are generally elongated and with general directions parallel to each other.

Dans le cas où la boîte à eau du dispositif présente une face ouverte de forme rectangulaire qui est propre à coif­fer une extrémité du corps ou du faisceau de tubes du radiateur de refroidissement, la direction générale du récipient annexe est alors parallèle aux deux grands côtés de la face ouverte de la boîte à eau.In the case where the water box of the device has an open face of rectangular shape which is suitable for covering one end of the body or of the bundle of tubes of the cooling radiator, the general direction of the annex container is then parallel to the two long sides of the open side of the water box.

Dans une forme de réalisation préférée de l'invention, la paroi du récipient annexe, qui est traversée par les tubulures de l'échangeur d'huile, est de forme générale cylindrique et présente une extrémité fermée par une paroi de fond et une autre extrémité ouverte propre à être fermée par un couvercle, après mise en place de l'échangeur d'hui­le dans le récipient annexe.In a preferred embodiment of the invention, the wall of the auxiliary container, which is crossed by the pipes of the oil exchanger, is of general shape cylindrical and has one end closed by a bottom wall and another open end suitable for being closed by a cover, after installation of the oil exchanger in the annexed container.

Dans ce cas, l'extrémité ouverte du récipient annexe doit avoir une dimension en largeur supérieure à l'encombrement, dans la même direction, de l'échangeur d'huile et de ses tubulures.In this case, the open end of the annex container must have a width dimension greater than the size, in the same direction, of the oil exchanger and its pipes.

Ainsi, conformément à l'invention, c'est la dimension en largeur du récipient annexe qui doit être adaptée à l'encombrement en largeur du radiateur d'huile, la largeur de la boîte à eau étant adaptée seulement à l'épaisseur ou la largeur du faisceau de tubes ou du corps d'échangeur faisant partie du radiateur de refroidissement.Thus, in accordance with the invention, it is the width dimension of the annex container which must be adapted to the overall dimensions of the oil radiator, the width of the water box being adapted only to the thickness or the width of the tube bundle or of the exchanger body forming part of the cooling radiator.

Selon une autre caractéristique de l'invention, la paroi de forme cylindrique du récipient annexe est à section générale circulaire et comprend une portion de paroi plane qui s'étend parallèlement à l'axe du cylindre et qui ménage deux orifices de passage pour les deux tubulures de l'échan­geur d'huile.According to another characteristic of the invention, the cylindrical wall of the annex container has a generally circular section and comprises a flat wall portion which extends parallel to the axis of the cylinder and which provides two passage openings for both oil exchanger pipes.

Grâce à cette caractéristique, chaque tubulure peut compren­dre un rebord annulaire appliqué sur la face interne de la portion de paroi plane précitée, et une partie d'extré­mité à filetage extérieur qui s'étend de l'autre côté de la paroi, à travers l'orifice de passage, et qui reçoit un écrou pour serrer cette portion de paroi plane sur le rebord annulaire.Thanks to this characteristic, each tube can include an annular flange applied to the internal face of the aforementioned flat wall portion, and an end portion with an external thread which extends on the other side of the wall, through the 'passage opening, and which receives a nut to tighten this portion of planar wall on the annular rim.

Selon encore une autre caractéristique de l'invention, la boîte à eau et le récipient annexe communiquent entre eux par deux passages de communication distants l'un de l'autre.According to yet another characteristic of the invention, the water box and the annex container communicate with each other by two communication passages distant from each other.

L'invention prévoit en outre que ces deux passages de communication débouchent respectivement dans deux compar­timents distincts de la boîte à eau, qui sont séparés par une cloison interne de la boîte à eau.The invention further provides that these two passages of communication lead respectively into two separate compartments of the water box, which are separated by an internal partition of the water box.

Ceci permet de monter le dispositif de l'invention sur un radiateur de refroidissement à circulation en U ou en Z.This allows the device of the invention to be mounted on a U or Z circulation cooling radiator.

Dans la description qui suit, donnée seulement à titre d'exemple, on se réfère au dessin annexé, sur lequel :

  • - la figure 1 est une vue en perspective d'une partie d'un radiateur de refroidissement équipé d'un dispositif de boîte à eau contenant un radiateur d'huile,
  • - la figure 2 est une vue en coupe suivant un plan passant par les lignes XX et YY de la figure 1 ;
  • - la figure 3 est une vue en élévation du radiateur de refroidissement de la figure 1, ce radiateur étant du type à circulation en Z ;
  • - la figure 4 est une vue en élévation d'un radiateur à circulation en U et équipé d'un dispositif de boîte à eau selon l'invention.
In the description which follows, given only by way of example, reference is made to the appended drawing, in which:
  • FIG. 1 is a perspective view of part of a cooling radiator equipped with a water box device containing an oil radiator,
  • - Figure 2 is a sectional view along a plane passing through the lines XX and YY of Figure 1;
  • - Figure 3 is an elevational view of the cooling radiator of Figure 1, this radiator being of the Z-circulation type;
  • - Figure 4 is an elevational view of a U-shaped circulation radiator and equipped with a water box device according to the invention.

On se réfère d'abord aux figures 1 à 3 qui représentent un dispositif de boîte à eau 10 selon l'invention compre­nant une boîte à eau 12 et un récipient annexe 14 qui communiquent entre eux, le récipient annexe contenant un échangeur d'huile 16.We first refer to Figures 1 to 3 which show a water box device 10 according to the invention comprising a water box 12 and an annex container 14 which communicate with each other, the annex container containing an oil exchanger 16 .

La boîte à eau 12 est montée de façon classique à une extrémité d'un faisceau de tubes 18 au moyen d'un collec­teur ou plaque à tubes 20 (figure 1). Le faisceau 18 comprend, de façon classique, un ensemble de tubes paral­lèles 22 qui traversent un ensemble d'ailettes 24 qui sont parallèles entre elles et perpendiculaires à la direc­ tion des tubes 22. Une extrémité des tubes 22 est montée de façon étanche dans des trous 26 (figure 1) que ménage le collecteur 20.The water box 12 is conventionally mounted at one end of a bundle of tubes 18 by means of a manifold or tube plate 20 (FIG. 1). The bundle 18 comprises, in a conventional manner, a set of parallel tubes 22 which pass through a set of fins 24 which are parallel to each other and perpendicular to the direction tion of the tubes 22. One end of the tubes 22 is mounted in leaktight manner in holes 26 (FIG. 1) which the collector 20 spares.

A l'autre extrémité du faisceau 18 est montée une boîte à eau 28 pourvue d'une tubulure d'entrée 30, la boîte à eau 12 du dispositif 10 étant munie d'une tubulure de sortie 32 (figure 3).At the other end of the bundle 18 is mounted a water box 28 provided with an inlet pipe 30, the water box 12 of the device 10 being provided with an outlet pipe 32 (FIG. 3).

La boîte à eau 12 comprend une paroi latérale 34 à section droite semi-circulaire (figure 2) qui se raccorde sur un rebord périphérique 36 de forme rectangulaire comprenant deux grands côtés 38 et deux petits côtés 40. Le rebord 36 délimite ainsi avec la paroi latérale 34 une face ouver­te de forme rectangulaire qui est propre à être raccordée de façon étanche au collecteur 20, par exemple par soudage, si ce collecteur et la boîte à eau sont réalisés en matière plastique.The water box 12 comprises a side wall 34 of semi-circular cross section (FIG. 2) which is connected to a peripheral rim 36 of rectangular shape comprising two long sides 38 and two short sides 40. The rim 36 thus delimits with the wall lateral 34 an open face of rectangular shape which is suitable for being tightly connected to the collector 20, for example by welding, if this collector and the water box are made of plastic.

Le récipient annexe 14 a la forme générale d'un cylindre dont l'axe 42 (figures 1 et 2) s'étend parallèlement aux deux grands côtés 38 délimitant la face ouverte de la boîte à eau 12. Le récipient annexe 14 présente une paroi latérale cylindrique 44 de section généralement circulaire et d'axe 42. La paroi 44 présente une extrémité 46 fermée par une paroi de fond 48 et une extrémité ouverte 50 pro­pre à être fermée par un couvercle 52, après mise en place de l'échangeur d'huile 16 dans le récipient annexe 14.The annex container 14 has the general shape of a cylinder whose axis 42 (FIGS. 1 and 2) extends parallel to the two long sides 38 delimiting the open face of the water box 12. The annex container 14 has a wall lateral cylindrical 44 of generally circular section and axis 42. The wall 44 has an end 46 closed by a bottom wall 48 and an open end 50 suitable for being closed by a cover 52, after the exchanger d oil 16 in the annex container 14.

La paroi cylindrique 44 du récipient annexe 14 comprend une portion de paroi plane 54 qui s'étend parallèlement à l'axe 42 du cylindre et qui ménage deux orifices de passage 56 pour les deux tubulures 58 de raccordement de l'échangeur d'huile à un circuit d'huile.The cylindrical wall 44 of the annex container 14 comprises a flat wall portion 54 which extends parallel to the axis 42 of the cylinder and which provides two passage orifices 56 for the two pipes 58 for connecting the oil exchanger to an oil circuit.

L'échangeur d'huile 16 comprend, de façon classique, deux parois cylindriques coaxiales 60 et 62 (figure 2) reliées à étanchéité à leurs extrémités, les deux tubulures 58 étant disposées au voisinage de ces extrémités axiales et débouchant dans l'espace annulaire compris entre les parois cylindriques 60 et 62. Chacune des tubulures 58 est orientée perpendiculairement à l'axe de l'échangeur d'huile 16 qui, dans la position de la figure 2, est confon­du avec l'axe 42 du récipient annexe 14. Chacune des tubu­lures 58 comprend un rebord annulaire 64 appliqué sur la face interne de la portion de paroi plane 54 et une partie d'extrémité à filetage extérieur 66 qui s'étend de l'autre côté de la portion de paroi 54, à travers l'ori­fice 56, et qui reçoit un écrou 68 serrant la portion de paroi 54 sur le rebord annulaire 64. (figure 2). En outre, chaque rebord annulaire 64 ménage une gorge annulaire propre à recevoir un joint d'étanchéité 70 pour assurer la traversée étanche des deux tubulures 58 à travers la paroi 44 du récipient annexe 14.The oil exchanger 16 comprises, in a conventional manner, two coaxial cylindrical walls 60 and 62 (FIG. 2) connected with sealing at their ends, the two pipes 58 being arranged in the vicinity of these axial ends and opening into the annular space between the cylindrical walls 60 and 62. Each of the pipes 58 is oriented perpendicular to the axis of the oil exchanger 16 which, in the position of the Figure 2, coincides with the axis 42 of the annex container 14. Each of the pipes 58 comprises an annular flange 64 applied to the internal face of the flat wall portion 54 and an end portion with an external thread 66 which extends on the other side of the wall portion 54, through the orifice 56, and which receives a nut 68 tightening the wall portion 54 on the annular flange 64. (Figure 2). In addition, each annular rim 64 provides an annular groove suitable for receiving a seal 70 to ensure the leaktight passage of the two pipes 58 through the wall 44 of the annex container 14.

L'extrémité ouverte 50 du récipient annexe 14 présente la même section droite que la paroi 44. Cette extrémité a une dimension en largeur supérieure à l'encombrement, dans la même direction, de l'échangeur d'huile 16 et de ses tubulures 58, ce qui permet un montage aisé de l'é­changeur d'huile 16 à l'intérieur du récipient annexe 14. Pour cela, il suffit d'introduire l'échangeur 16 axia­lement dans le récipient annexe 14 en sorte que la paroi cylindrique 60 de ce dernier se trouve dans la position représentée en traits fantômes sur la figure 2, les tubu­lures 58 étant orientées perpendiculairement à la portion de paroi 54. Lorsque ces deux tubulures sont en vis à vis des deux orifices correspondants 56, il suffit alors de déplacer l'échangeur 16 pour que les deux tubulures 58 traversent les deux orifices correspondants 56, et de mettre ensuite en place les deux écrous 68.The open end 50 of the annex container 14 has the same cross section as the wall 44. This end has a width dimension greater than the size, in the same direction, of the oil exchanger 16 and its pipes 58 , which allows easy mounting of the oil exchanger 16 inside the annex container 14. For this, it suffices to introduce the exchanger 16 axially into the annex container 14 so that the cylindrical wall 60 of the latter is in the position shown in phantom lines in FIG. 2, the pipes 58 being oriented perpendicular to the wall portion 54. When these two pipes are opposite the two corresponding orifices 56, it suffices to move the exchanger 16 so that the two pipes 58 pass through the two corresponding orifices 56, and then put the two nuts 68 in place.

La boîte à eau 12 et le récipient annexe 14 forment un ensemble monobloc réalisé par moulage d'une matière plas­tique. Deux conduits cylindriques parallèles 72 et 74 relient entre elles la paroi latérale 34 de la boîte à eau et la paroi 44 du récipient annexe 14. Ces deux conduits cylindriques sont également formés d'une seule pièce avec la boîte à eau et le récipient annexe et s'étendent paral­lèlement entre eux et perpendiculairement à la face ouverte de la boîte à eau 12 et perpendiculairement à l'axe 42 du récipient annexe 14. Les conduits cylindriques 72 et 74 définissent ainsi deux passages de communication entre l'intérieur de la boîte à eau 12 et l'intérieur du récipient annexe 14.The water box 12 and the annex container 14 form a one-piece assembly produced by molding a plastic material. Two parallel cylindrical conduits 72 and 74 connect the side wall 34 of the box to each other. water and the wall 44 of the annex container 14. These two cylindrical conduits are also formed in one piece with the water box and the annex container and extend parallel to each other and perpendicular to the open face of the water box 12 and perpendicular to the axis 42 of the annex container 14. The cylindrical conduits 72 and 74 thus define two communication passages between the interior of the water box 12 and the interior of the annex container 14.

Dans la forme de réalisation des figures 1 à 3, la boîte à eau 12 comporte deux cloisons internes 76 et 78 qui partagent l'intérieur de la boîte à eau 12 en trois compar­timents 80, 82 et 84. Le compartiment 80 communique avec le récipient annexe 14 par l'intermédiaire du conduit cylindrique 72. Le compartiment 82 communique avec le récipient annexe 14 par le conduit cylindrique 74. Le compartiment 84 est en communication avec la tubulure de sortie 32 de la boîte à eau 12.In the embodiment of Figures 1 to 3, the water box 12 has two internal partitions 76 and 78 which divide the interior of the water box 12 into three compartments 80, 82 and 84. The compartment 80 communicates with the container annex 14 via the cylindrical conduit 72. The compartment 82 communicates with the annex container 14 through the cylindrical conduit 74. The compartment 84 is in communication with the outlet pipe 32 of the water box 12.

Par ailleurs, comme montré à la figure 3, la boîte à eau 28 comporte une cloison interne 86 qui partage cette boîte à eau en un compartiment 88 communiquant avec la conduite d'entrée 30 et un autre compartiment 90.Furthermore, as shown in FIG. 3, the water box 28 includes an internal partition 86 which divides this water box into a compartment 88 communicating with the inlet pipe 30 and another compartment 90.

Le radiateur de refroidissement représenté à la figure 3 fonctionne de la façon suivante. Le liquide de refroidis­sement, par exemple un mélange d'eau et de glycol, entre dans le radiateur de refroidissement par la tubulure d'en­trée 30 et pénétre ainsi dans le compartiment 88. De là il s'écoule à travers une partie des tubes du faisceau pour gagner le compartiment 80, passer à travers le con­duit 72 et pénètrer à l'intérieur du récipient annexe pour refroidir l'huile qui s'écoule à travers l'échangeur d'huile 16. Le liquide de refroidissement quitte ensuite le récipient annexe 14 en passant par le conduit 74 pour gagner le compartiment 82. De là, il s'écoule à travers une autre partie des tubes du faisceau pour gagner le compartiment 90. Ensuite il quitte le compartiment 90, passe à travers une autre partie des tubes du faisceau, gagne le compartiment 84 et sort de la boîte à eau 12 par la tubulure 32. La circulation du liquide de refroidis­sement dans ce radiateur s'effectue à la manière d'un Z en formant un "tri-circuit".The cooling radiator shown in Figure 3 operates as follows. The coolant, for example a mixture of water and glycol, enters the cooling radiator through the inlet pipe 30 and thus enters the compartment 88. From there it flows through part of the tubes of the beam to reach compartment 80, pass through conduit 72 and enter the interior of the annex container to cool the oil which flows through the oil exchanger 16. The coolant then leaves the annex container 14 passing through the duct 74 to reach the compartment 82. From there, it flows through another part of the bundle tubes to reach the compartment 90. Then it leaves compartment 90, passes through another part of the bundle tubes, reaches compartment 84 and leaves the water box 12 through the tube 32. The circulation of the coolant in this radiator takes place like a Z by forming a "tri-circuit".

On se réfère maintenant à la figure 4. Dans cette forme de réalisation, la boîte à eau 28 comporte un embout d'en­trée 92 et un embout de sortie 94. Une cloison interne 96 partage la boîte à eau en deux compartiments 98 et 100 qui communiquent respectivement avec les tubulures 92 et 94.Referring now to Figure 4. In this embodiment, the water box 28 has an inlet nozzle 92 and an outlet nozzle 94. An internal partition 96 divides the water box into two compartments 98 and 100 which communicate respectively with the pipes 92 and 94.

La boîte à eau 12 est partagée en deux compartiments 102 et 104 par une cloison 106. Le récipient annexe 14 commu­nique ainsi avec le compartiment 102 par le conduit 72 et avec le compartiment 104 par le conduit 74. Le fonc­tionnement du radiateur de refroidissement de la figure 4 est le suivant. Le liquide de refroidissement gagne le compartiment 98 par la tubulure 92, traverse une partie des tubes du faisceau 18, gagne le compartiment 102 et pénètre ensuite dans le récipient annexe 14 par le conduit 72. Dans ce récipient, il refroidit l'huile qui circule dans l'échangeur 16. Le liquide de refroidissement quitte ensuite le récipient annexe en passant successivement à travers le conduit 74, dans le compartiment 104, à travers l'autre partie des tubes du faisceau 18 pour gagner le compartiment 100 qu'il quitte par la tubulure 94. Le circuit de refroidissement est ainsi du type "bi-circuit" ou circuit en U.The water box 12 is divided into two compartments 102 and 104 by a partition 106. The annex container 14 thus communicates with the compartment 102 by the conduit 72 and with the compartment 104 by the conduit 74. The operation of the cooling radiator of the Figure 4 is as follows. The coolant reaches the compartment 98 through the tubing 92, passes through part of the tubes of the bundle 18, reaches the compartment 102 and then enters the annex container 14 through the conduit 72. In this container, it cools the circulating oil in the exchanger 16. The coolant then leaves the annex container, passing successively through the conduit 74, in the compartment 104, through the other part of the tubes of the bundle 18 to reach the compartment 100 which it leaves by the tubing 94. The cooling circuit is thus of the "bi-circuit" or U-shaped type.

Dans les deux modes de réalisation précités, le couvercle 52 est fixé de façon étanche sur l'extrémité ouverte 50 du récipient annexe 14 par exemple par soudage ou bien en utilisant une bague de sertissage. Le couvercle 52 peut être un simple bouchon ou bien constituer, comme montré à la figure 1, une embase de remplissage comportant son propre bouchon 108, permettant ainsi de remplir le radiateur de refroidissement en liquide de refroidissement par l'intermédiaire du récipient annexe 14.In the two abovementioned embodiments, the cover 52 is fixed in leaktight manner to the open end 50 of the annex container 14, for example by welding or else by using a crimping ring. The cover 52 can be a simple plug or else constitute, as shown in FIG. 1, a filling base comprising its own plug 108, thus making it possible to fill the cooling radiator with coolant via the annex container 14.

Le dispositif de boîte à eau de l'invention offre l'avanta­ge supplémentaire de pouvoir monter l'échangeur d'huile dans le récipient annexe soit avant montage, soit après montage de la boîte à eau sur le faisceau de tube.The water box device of the invention offers the additional advantage of being able to mount the oil exchanger in the annex container either before mounting, or after mounting the water box on the tube bundle.

Par ailleurs compte tenu de la forme cylindrique du réci­pient annexe, le dispositif de boîte à eau résiste parfaite­ment à la pression du liquide de refroidissement.Furthermore, given the cylindrical shape of the annex container, the water box device perfectly withstands the pressure of the coolant.

Cependant, il peut être envisagé toutes formes voulues pour le récipient annexe, comme par exemple une forme circulaire limitée par une paroi plane parallèle au bord ouvert de la boîte à eau et située au-delà du radiateur d'huile. De cette façon, l'encombrement longitudinal de l'échangeur peut être limité.However, it is possible to envisage any shape desired for the annex container, such as for example a circular shape limited by a flat wall parallel to the open edge of the water box and situated beyond the oil radiator. In this way, the longitudinal size of the exchanger can be limited.

Claims (11)

1. Dispositif de boîte à eau pour un radiateur de refroidis­sement d'un véhicule automobile, dans lequel un échangeur d'huile à deux tubulures d'entrée et de sortie est immergé dans le liquide de refroidissement circulant dans le radia­teur de refroidissement, caractérisé en ce qu'il comprend un récipient annexe (14) qui communique avec la boîte à eau (12) et qui contient l'échangeur d'huile (16), les tubulures d'entrée et de sortie (58) de ce dernier traver­sant à étanchéité une paroi (44) du récipient annexe (14) et servant à la fixation et au maintient de l'échangeur d'huile (16) dans le récipient annexe (14).1. Water box device for a motor vehicle cooling radiator, in which an oil exchanger with two inlet and outlet pipes is immersed in the cooling liquid circulating in the cooling radiator, characterized in what it includes an annex container (14) which communicates with the water box (12) and which contains the oil exchanger (16), the inlet and outlet pipes (58) of the latter passing through sealing a wall (44) of the annex container (14) and serving for fixing and maintaining the oil exchanger (16) in the annex container (14). 2. Dispositif selon la revendication 1, caractérisé en ce que la boîte à eau (12) et le récipient annexe (14) forment un ensemble monobloc pouvant être moulé en matière plastique.2. Device according to claim 1, characterized in that the water box (12) and the annex container (14) form a one-piece assembly which can be molded from plastic. 3. Dispositif selon l'une des revendications 1 et 2, carac­térisé en ce que la boîte à eau (12) et le récipient annexe (14) sont de forme générale allongée et à directions géné­rales parallèles entre elles.3. Device according to one of claims 1 and 2, characterized in that the water box (12) and the annex container (14) are generally elongated and generally parallel to one another. 4. Dispositif selon la revendication 3, dans lequel la boîte à eau (12) présente une face ouverte de forme rectan­gulaire qui est propre à coiffer une extrémité du corps ou du faisceau de tubes (18) du radiateur de refroidisse­ment, caractérisé en ce la direction générale du récipient annexe (14) est parallèle aux deux grands côtés (38) de la face ouverte de la boîte à eau (12).4. Device according to claim 3, wherein the water box (12) has an open face of rectangular shape which is suitable for covering one end of the body or of the bundle of tubes (18) of the cooling radiator, characterized in that general direction of the annex container (14) is parallel to the two long sides (38) of the open face of the water box (12). 5. Dispositif selon l'une des revendications 1 à 4, carac­térisé en ce que la paroi (44) du récipient annexe (14), qui est traversée par les tubulures (58) de l'échangeur d'huile (16), est de forme générale cylindrique dont une extrémité (46) est fermée par une paroi (48) et dont l'au­tre extrémité (50) est ouverte et propre à être fermée par un couvercle (52) après mise en place de l'échangeur d'huile (16) dans le récipient annexe (14).5. Device according to one of claims 1 to 4, characterized in that the wall (44) of the annex container (14), which is crossed by the pipes (58) of the oil exchanger (16), is generally cylindrical, one end (46) of which is closed by a wall (48) and the other end (50) of which is open and suitable for being closed by a cover (52) after fitting the oil exchanger (16) in the annexed container (14). 6. Dispositif selon la revendication 5, caractérisé en ce que l'extrémité ouverte (50) du récipient annexe a une dimension en largeur supérieure à l'encombrement, dans la même direction, de l'échangeur d'huile (16) et de ses tubulures (58).6. Device according to claim 5, characterized in that the open end (50) of the annex container has a width dimension greater than the size, in the same direction, of the oil exchanger (16) and its pipes (58). 7. Dispositif selon la revendication 5, caractérisé en ce que le couvercle (52) forme une embase pour le remplis­sage du radiateur de refroidissement.7. Device according to claim 5, characterized in that the cover (52) forms a base for filling the cooling radiator. 8. Dispositif selon l'une des revendications 5 et 6, carac­térisé en ce que la paroi (44) de forme cylindrique du récipient annexe (14) est à section généralement circu­laire et comprend une portion de paroi plane (54) qui s'étend parallèlement à l'axe (42) du cylindre et qui ménage deux orifices de passage (56) pour les deux tubu­lures (58) de l'échangeur d'huile (16).8. Device according to one of claims 5 and 6, characterized in that the wall (44) of cylindrical shape of the annex container (14) is of generally circular section and comprises a portion of planar wall (54) which extends parallel to the axis (42) of the cylinder and which provides two passage openings (56) for the two pipes (58) of the oil exchanger (16). 9. Dispositif selon l'une des revendications 1 à 8, carac­térisé en ce que la boîte à eau (12) et le récipient annexe (14) communiquent entre eux par deux passages de communi­cation distants l'un de l'autre.9. Device according to one of claims 1 to 8, characterized in that the water box (12) and the annex container (14) communicate with each other by two communication passages distant from each other. 10. Dispositif selon la revendication 9, caractérisé en ce que les deux passages de communication sont formés par deux conduits cylindriques parallèles (72, 74) reliant une paroi (34) de la boîte à eau (12) à la paroi (44) du récipient annexe (14).10. Device according to claim 9, characterized in that the two communication passages are formed by two parallel cylindrical conduits (72, 74) connecting a wall (34) of the water box (12) to the wall (44) of the annex container (14). 11. Dispositif selon l'une des revendications 9 et 10, caractérisé en ce que les deux passages de communication débouchent respectivement dans deux compartiments distincts (80, 82 ; 102, 104) de la boîte à eau (12) qui sont séparés par une cloison interne (76 ; 106) de la boîte à eau.11. Device according to one of claims 9 and 10, characterized in that the two communication passages open respectively into two separate compartments (80, 82; 102, 104) of the water box (12) which are separated by a internal partition (76; 106) of the water box.
EP88401081A 1987-05-06 1988-05-04 Water container for a motor vehicle cooling radiator comprising an oil exchanger Withdrawn EP0290340A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8706416 1987-05-06
FR8706416A FR2614978B1 (en) 1987-05-06 1987-05-06 WATER BOX DEVICE FOR A COOLING RADIATOR FOR A MOTOR VEHICLE, CONTAINING AN OIL EXCHANGER

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EP (1) EP0290340A1 (en)
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FR2614978B1 (en) 1989-12-08
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