WO2005121678A1 - Tube end piece for hydraulic circuit element, in particular for heat exchanger - Google Patents

Tube end piece for hydraulic circuit element, in particular for heat exchanger Download PDF

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Publication number
WO2005121678A1
WO2005121678A1 PCT/FR2005/001057 FR2005001057W WO2005121678A1 WO 2005121678 A1 WO2005121678 A1 WO 2005121678A1 FR 2005001057 W FR2005001057 W FR 2005001057W WO 2005121678 A1 WO2005121678 A1 WO 2005121678A1
Authority
WO
WIPO (PCT)
Prior art keywords
tube
end piece
face
heat exchanger
connection box
Prior art date
Application number
PCT/FR2005/001057
Other languages
French (fr)
Inventor
Jean-Claude Malgouries
Jean-Louis Laveran
Original Assignee
Valeo Systemes Thermiques
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Valeo Systemes Thermiques filed Critical Valeo Systemes Thermiques
Publication of WO2005121678A1 publication Critical patent/WO2005121678A1/en

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/02—Header boxes; End plates
    • F28F9/0219—Arrangements for sealing end plates into casing or header box; Header box sub-elements
    • F28F9/0221—Header boxes or end plates formed by stacked elements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
    • F28D1/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
    • F28D1/04—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits
    • F28D1/053—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being straight
    • F28D1/0535—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being straight the conduits having a non-circular cross-section
    • F28D1/05358—Assemblies of conduits connected side by side or with individual headers, e.g. section type radiators
    • 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
    • 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
    • F28F9/0251—Massive connectors, e.g. blocks; Plate-like connectors
    • F28F9/0253—Massive connectors, e.g. blocks; Plate-like connectors with multiple channels, e.g. with combined inflow and outflow channels

Definitions

  • the invention relates to the field of heat exchangers, in particular for the equipment of motor vehicles.
  • a tube end piece arranged to be mounted at one end of a fluid circulation tube to form a hydraulic circuit element.
  • heat exchangers are produced in which the fluid passes from one circuit element to the other by their respective ends through perforated bosses.
  • circuit elements make it possible to replace the manifolds, which usually receive the ends of the fluid circulation tubes, with less bulky nozzles.
  • Another advantage lies in the elimination of the punched collecting plates and in the operation of mounting the tubes in small and poorly tolerated perforations of this collecting plate.
  • heat exchangers must have a fluid inlet and outlet connected to the rest of the vehicle's hydraulic system.
  • the configuration of the heat exchangers of the type described above makes it difficult to connect them to the rest of the hydraulic circuit, in particular when the inlet and the outlet must be arranged perpendicular to the alignment of the tube ends, for example to accommodate the best the heat exchanger in the vehicle, or to adapt its position to the configuration of the rest of the hydraulic circuit.
  • An object of the invention is to overcome the aforementioned drawbacks.
  • the invention provides a tube end having two branches spaced apart from one another joined by a bend so as to have a U-shape having free ends, the branches and the bend delimiting an interior region s opening outwards at the free ends.
  • This end piece further comprises a tube passage opening into the interior region at a location selected and arranged to accommodate the end of a fluid circulation tube as well as two opposite lateral faces of junction, each lateral face being arranged to s' press on a side face of a similar tip.
  • This type of nozzle provides for the passage of a fluid circulating in a tube in the interior space delimited by the nozzle.
  • this configuration makes it possible to associate similar end pieces through the intermediary of the opposite lateral junction faces and thus to associate the interior spaces of the end pieces for the passage of the fluid.
  • the end piece according to the invention comprises two elements of general U shape, each element having a ribbed cross section defining two support faces spaced in general U shape, a first support face, called face inner, being in mutual support with the inner face of one other element while the second bearing face, called the outer face, is arranged to rest on the face outside of a similar tube end piece and constitutes said lateral face.
  • the tip can be made in two parts, for example by folding, which simplifies its manufacture.
  • the inner face of one of the elements advantageously extends by at least one tab intended to be folded against the inner face of the other element, so as to hold, at least temporarily, the two elements of general shape in U in mutual support.
  • the end piece according to the invention comprises a first element of general U-shaped shape having a ribbed cross-section defining two bearing faces spaced in general U-shape, a first bearing face called the inner face, being resting on a generally rectangular inner face of a second element of generally parallelepiped shape, the second element further comprising an outer junction face which constitutes said lateral face.
  • the second element makes it possible to close the interior space delimited by the first element.
  • the inner face of the second element advantageously extends by at least one tab intended to be folded against the inner face of the first element so as to keep the first and second elements in mutual support, possibly while waiting for a brazing operation, which can ensure permanent maintenance of the first and second elements between them.
  • the external junction face prefferably includes a fluid passage orifice in communication with the internal region surrounded by a flared annular collar providing a junction surface.
  • the end piece can then be brought into contact with tube end pieces also fitted with such a flared collar.
  • This configuration also makes it possible to ensure the passage of the fluid from the interior space delimited by the first element to a tube end piece of a different type.
  • the end piece is advantageously formed of a strip of metal sheet having a first folded and stamped portion to form the first element linked by a tongue to a second folded and stamped portion to form said second element, said tongue. being further folded so as to mutually support the inner faces of said first and second elements.
  • the end piece can be produced by folding economically and in large series.
  • the tube passage can be formed through one of the branches, or else through the elbow.
  • the inner faces of the two elements are stamped locally so as to form two complementary wall portions of the tube passage. It is then possible to introduce the tube before the elements are folded over one another.
  • the tube passage has an oblong section adapted to accommodate the end of a flat fluid circulation tube.
  • the invention also relates to a hydraulic circuit element comprising at least one fluid circulation tube at two ends and at least one nozzle at one of said ends of the tube, said nozzle being as defined above.
  • the invention finally relates to a heat exchanger comprising a plurality of hydraulic circuit elements, the respective tube end pieces of which are arranged side by side so that the free ends of the branches of the end pieces jointly define two opposite longitudinal edges of a housing. connection.
  • the housing connection thus defined offers two edges on which other mechanical elements can be supported.
  • connection box is then advantageously delimited by two transverse edges formed by a tube end piece according to the second configuration of the invention.
  • the connection box then has an opening on which other mechanical elements can be adapted.
  • connection box can be connected to other hydraulic circuit elements whose end pieces have a flared collar.
  • the heat exchanger further comprises a tubing element having, near one end, a portion of rectangular section of dimensions chosen to be housed between the longitudinal and transverse edges of the connection box.
  • the tubing element allows the connection of the heat exchanger to the rest of the hydraulic circuit provided " for example in the motor vehicle.
  • the tubing element then advantageously comprises a shoulder of dimensions chosen to rest on the longitudinal and transverse edges of the connection box, making it easier to fit the tubing element into the connection box.
  • the shoulder by pressing on the longitudinal and transverse edges contributes to ensuring the seal between the tubing element and the connection box.
  • the heat exchanger further comprises a member adapter having a part of rectangular section able to be housed between the longitudinal and transverse edges of the connection box.
  • the adapter member obstructs the opening of the connection box while allowing the connection of a standard mechanical element.
  • the adapter member prefferably comprises a connection face with an electrical member, for example a solenoid valve.
  • FIG. 1 is a perspective view of a tube end piece according to the invention in a first configuration
  • FIG. 2 is a partial perspective view of a hydraulic circuit element according to the invention comprising the tube end piece of FIG. 1,
  • FIG. 3 is a partial perspective view of a hydraulic circuit element provided with a nozzle according
  • FIG. 4 is a partial exploded perspective view of a heat exchanger provided with hydraulic circuit elements according to the invention.
  • FIG. 5 is a partial exploded perspective view of a heat exchanger according to the invention in another configuration
  • FIG. 6 is a partial perspective view of a heat exchanger of the invention in yet another configuration
  • FIG. 7 is a partial perspective view of a heat exchanger of the invention in yet another configuration.
  • Figure 1 is a perspective view of a tube tip 2 according to the invention in a first configuration.
  • the tube end piece 2 is composed of a first U-shaped element 4 having a ribbed or U-shaped cross section and a second U-shaped element 6 of a shape similar to the first U-shaped element 4.
  • Each of the U-shaped elements 4 and 6 is in the form of two spaced branches, referenced respectively 8.10 and 12.14, substantially parallel to each other and of ribbed or U-shaped section.
  • the spaced branches 8.10 (respectively 12, 14) are interconnected at one of their ends by a bend 16 (respectively 18) of semi-circular shape.
  • the spaced apart branches 8,10 (respectively 12,14) of the U-shaped element 4 (respectively 6) each have a free end 20, 22 in the form of a flat U-shaped surface substantially perpendicular to the direction of the branch 8, 10 (respectively 12.14) to which it corresponds.
  • Each of the U-shaped elements 4 and 6 has, by virtue of its ribbed section, a first bearing face 28 (respectively 30), or inner face, U-shaped and in mutual support with the inner face 30 (respectively 28) of the similar U-shaped element 4 or 6.
  • Each of the U-shaped elements 4 and 6 has also a second bearing face 32 (respectively 34), or outer face, also in the shape of a U, substantially parallel to the first bearing face 28 (respectively 30) and of generally identical shape.
  • the external faces 32 and 34 of the U-shaped elements 4 and 6 of the tube end piece 2 each provide a junction zone allowing the support of an external face of a similar tube end piece 2.
  • the union of the U-shaped elements 4 and 6 gives the tube end-piece 2 a general U-shape.
  • the tube end-piece 2 thus has two spaced apart and parallel branches formed by the meeting of the spaced apart branches 8 and 12 of on the one hand, 10 and 14 on the other hand, U-shaped elements 4 and 6.
  • the branches spaced from the tube end 2 are connected by a semi-circular bend formed by the meeting of the elbows 16 and 18 of the U-shaped elements 4 and 6.
  • the spaced branches and the semicircular bend of the tube end 2 define an open interior space opening outwards at the free ends of the branches, which are formed from the union of the free ends 20 and 24 of the branches 8 and 12 on the one hand and free ends 22 and 26 of the branches 10 and 14 on the other hand.
  • Each of the U-shaped elements 4 and 6 has an extension of material from the inner face 28 (respectively 30) in the direction of the branch 8 (respectively 12) and connecting the outside of the elbow 16 (respectively 18).
  • each of the U-shaped elements 4 and 6 has at the level of one of the branches 8 and 12 a stamped part 36 and 38 forming a portion (respectively a complementary portion) of an oblong housing 40 whose shape corresponds to the cross section of a flat tube 42 (shown in Figure 3) known to those skilled in the art.
  • the meeting of the first and second U-shaped elements 4 and 6 forms at the level of the stampings 36 and 38 the oblong housing 40, which crosses the branches 8 and 12 to open out into 1 interior space of one end of tube 2.
  • the oblong housing 40 is intended to receive the end of the flat fluid circulation tube 42. Thus, the liquid circulating inside the flat tube 42 can flow in the interior space of the tube end 2.
  • the inner face 28 of the first U-shaped element 4 is extended externally by a first rectangular tab 44 whose length is arranged perpendicular to the direction of the branch 8, said first tab 44 being folded against the inner face 30 of the second U-shaped element 6 of the tube end piece 2.
  • a second rectangular tab 46 Similar to the first rectangular tab 44 described above and whose the length is arranged in the direction of the branch 8, said second tab 46 also being folded against the inner face of the second U-shaped element 6.
  • a rectangular tongue 48 connects the inner face 28 of the first U-shaped element 4 at the branch 10 to the inner face 30 of the second U-shaped element 6 at the branch 14, outside the tube end piece 2.
  • the length of the rectangular tongue 48 is arranged in the direction of the branches 10 and 14.
  • the first and second rectangular tabs 44 and 46 and the rectangular tongue 48 cooperate in order to keep the first and second U-shaped elements 4 and 6 in contact before a brazing operation, which definitively assembles the first and second U-shaped elements 4 and 6 so as to form the end piece of tube 2.
  • the first and second rectangular tabs 44 and 46 can be provided at the level of the opposite branches 12 and 16, on the second U-shaped element 6 or even each on a U-shaped element 4 and 6.
  • the tube end piece 2 is produced from a single sheet metal strip having a first portion intended to be folded and stamped so as to form the first U-shaped element 4, connected by means of the tongue rectangular 48 to a second portion intended to be stamped and folded so as to form the second U-shaped element 6.
  • the first and second U-shaped elements are formed, the latter are brought against each other so as to set contact their respective inner faces 28 and 30, the tongue 48 being in fact folded back so as to form a loop.
  • Figure 2 is a perspective view of the tube end 2 of Figure 1 associated with a flat tube 42 for fluid circulation introduced into the tube passage housing 40. This association of the flat tube 42 and the end piece of tube 2 constitutes a hydraulic circuit element.
  • Figure 3 is a perspective view of a hydraulic circuit element consisting of the flat tube 42 and a tube end piece 50 according to the invention in a second configuration.
  • the tube end piece 50 of FIG. 3 consists of the first U-shaped element 4 as illustrated in FIGS. 1 and 2 associated with a closure element 52 of generally parallelepipedal appearance.
  • the closing element 52 has a first bearing face, or internal face 54, of generally rectangular shape on which the internal face 28 of the first U-shaped element comes into contact 4.
  • the closing element 52 also has a second bearing face, or outer face 56, also generally rectangular in shape.
  • the closing element 52 being obtained from a sheet metal strip, the inner faces 54 and outer 56 are two faces of the same strip of sheet metal.
  • the closure element 50 has a circular orifice 58 formed in the vicinity of the center of the interior 54 and exterior 56 faces and which passes through the closure element 52 in turn to open out at the interior space delimited by the branches 8 and 10 and the elbow 16 of the first U-shaped element 4.
  • the circular orifice 58 is surrounded by a flared collar 60 projecting from the external face 56.
  • the flared collar 60 offers an annular junction surface 62 substantially parallel to the external face 56.
  • the first and second rectangular tabs 44 and 46 of the first U-shaped element 4 are folded, in a manner analogous to what has been described above, against the external face 56 of the closing element 52.
  • the closing element 52 has at the inner face 54 a stamped 64 of shape similar to the stamped 38 of the tube end 2 of Figure 1.
  • the stamped 64 forms with the stamped 36 of the first U-shaped element 4, a logeme nt of oblong section 66 opening into the interior of the first U-shaped element 4 and capable of receiving the end of the flat fluid circulation tube 42.
  • tube housings 40 and 66 of the tube ends 2 and 50 can be provided internally with a shoulder so as to axially stop the fluid circulation tube 42 when it is introduced into the housing.
  • FIG. 4 is a perspective view of a portion of a heat exchanger formed by stacking of hydraulic circuit elements such as • shown in FIG. 2 and in FIG. 3.
  • a series, or stack, of tube end pieces 2 according to the first configuration of the invention are arranged side by side in contact with each other by their respective external faces 32 and 34.
  • the free ends 20 and 24 on the one hand, and 22 and 26 on the other hand, tube end pieces 2 arranged side by side define by their alignment two longitudinal edges 70 and 72 spaced apart and substantially parallel to one another.
  • the tube ends 2 located at the ends of the stack are joined, via the outer faces 34 and 32, tube ends 50 according to the second configuration of the invention.
  • the branches 8 and 12 on one side and 10 and 14 on the other of the tube end pieces 2 joined to one another as well as the elbows 16 and 18 also linked to each other partially define a closed connection box 78 " laterally by the closing elements 52 of the tube end pieces 50 situated at the end of the stack
  • the longitudinal edges 70 and 72 as well as the closing elements 52 define an opening 76 of substantially rectangular cross section of the connection box 78.
  • On the annular junction surface 62 of the tube end pieces 50 disposed at the ends of the connection box come to bear hydraulic circuit elements, the end pieces 80 of which have on each side a flared collar similar to the flared collar 62 on the end piece tube 50 having an annular junction surface.
  • tube end pieces 80 which will not be described in detail here, have a fluid circulation tube housing and are tr showered by a fluid communication passage into which the tube housing opens. Arranged side by side in mutual support via the junction surfaces of the flared collars, the tube ends 80 define a fluid circulation conduit. Such a conduit is disposed at each end of the connection box 78.
  • connection box 78 allows the fitting of hydraulic circuit elements intended to ensure the connection between one heat exchanger and the rest of the hydraulic circuit present in the motor vehicle.
  • FIG. 4 illustrates a tubing element 90 which takes the form of a hollow cylindrical portion 92 extending at one of its ends by a portion parallelepiped 94 also digs.
  • the cylindrical portion 92 has an annular collar 96 which can be used for example in cooperation with a clamping ring to hold the end of a hose forming part of the hydraulic circuit.
  • the parallelepiped portion 94 is extended at its free end by a portion of rectangular section 96 of dimension smaller than that of portion 94 so as to form between the portions 94 and 96 a shoulder perpendicular to the axial direction of the tubing element 90
  • the rectangular section portion 96 is of dimension chosen so as to be housed inside the connection box 78.
  • the outer surface of the rectangular section portion 96 comes to bear on the inner faces of the branches 8, 10, 12 and 14 forming part of the walls of the connection box 78.
  • the shoulder present between the portions 94 and 96 comes to bear on the one hand against the faces of the free ends of the U-shaped elements, on the other hand against the edge 74 of the closing elements 52.
  • the rectangular section portion 96 thus makes it possible to position the tubing element 90 relative to the connection box. nt while one shoulder, coming to bear on the free ends, facilitates the fitting of the tubing element 90 by acting as a stop.
  • the support between the shoulder and the free ends of the U-shaped elements contributes to sealing the connection between the tubing element 90 and the connection box 78.
  • FIG. 5 illustrates in an exploded perspective view another configuration of a heat exchanger according to the invention.
  • a connector 100 of generally parallelepiped shape is provided.
  • the connector 100 has two substantially circular orifices 102 and 104 passing through it and making it possible to connect pipes and / or tubes linked to the rest of the hydraulic circuit present in the vehicle, for example for the entry and exit of freon in the case of 'a condenser.
  • the connector 100 is extended at its other end by a portion of rectangular section 96 similar to the portion of rectangular section 96 illustrated in FIG. 4.
  • a shoulder formed by a narrowing of section is provided between the fitting 100 and the portion of rectangular section 96.
  • connection box 78 the rectangular section portion 96 is housed inside the connection box 78 through the opening 76, the external faces coming to bear on the internal faces of the branches of the U-shaped elements.
  • the shoulder of the connector 100 of course bears on the free ends 20, 22, 24 and 26 of the tube ends 2 and 50:
  • FIG. 6 illustrates yet another configuration of a heat exchanger according to the invention.
  • an adapter member 110 having a rectangular section portion 96 as described above, which is received in the opening 76 of the connection box 78.
  • the adapter member 110 comprises a plate metal 112 in which is cut a passage 113 of rectangular section.
  • the metal plate 112 is also provided with two holes 114 intended to receive fixing screws, which make it possible to secure an electrical member of the solenoid valve type 116 for example with the connection box.
  • the solenoid valve 116 is capable of setting in motion a partitioning member 118 which is of a shape adapted to the internal section of the end fittings. tube 2.
  • the partitioning element 118 completely obstructs the section of the fluid passage duct formed by the union of the tube end pieces 2.
  • the solenoid valve 116 is actuated , the partition member 118 is rotated and is positioned in an angular position close to 90 °. In this position, the partition member 118 no longer obstructs the passage of the fluid.
  • This type of configuration can be used in order to vary the number of passes of the fluid circulating inside the heat exchanger.
  • connection boxes 78 may be provided in the same heat exchanger, for example to provide the heat exchanger with a tubing element for the arrival of the fluid and a tubing element for the fluid outlet.
  • the tube housing 40 is disposed at the branches of a U-tube end piece 2, it is quite possible to provide this housing 40 at the elbow, as can be see in Figure 7. In fact, one can provide the housing 20 at different angular positions on the elbow, thus varying the angle between the opening 76 of the connection box 78 and the longitudinal axis of the tubes 42, in order 'Adapt, for example, the fluid inlet and outlet to the configuration of the rest of the hydraulic circuit.
  • connection box 78 may comprise at one of its ends a junction element 52 without orifice or collar, in the case where the connection box connection 78 is arranged at one end of the heat exchanger.
  • the invention applies to different types of heat exchanger, in particular to evaporators, condensers and carbon dioxide exchangers.

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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)
  • Quick-Acting Or Multi-Walled Pipe Joints (AREA)

Abstract

The invention concerns a tube end piece (2) for a hydraulic circuit element, useful for example for a motor vehicle heat exchanger. The end piece (2) comprises two branches spaced apart from each other assembled by a bend so as to form a U shape having free ends. The branches and the bend define an internal region opening outwards at the free ends. The end piece (2) further comprises a tube passageway (40) emerging into the internal region in a selected location and adapted to receive the end of a fluid circulating tube (42). The end piece (2) finally comprises two opposite lateral joining surfaces, each lateral surface being arranged to press on a lateral surface of an identical end piece.

Description

Embout de tube pour élément de circuit hydraulique, en particulier pour échangeur de chaleurTube end piece for hydraulic circuit element, in particular for heat exchanger
L'invention se rapporte au domaine des échangeurs de chaleur, notamment pour l'équipement des véhicules automobiles .The invention relates to the field of heat exchangers, in particular for the equipment of motor vehicles.
Plus précisément, elle concerne un embout de tube, agencé pour être monté à une extrémité d'un tube de circulation de fluide pour former un élément de circuit hydraulique.More specifically, it relates to a tube end piece, arranged to be mounted at one end of a fluid circulation tube to form a hydraulic circuit element.
On connaît, par exemple de la publication FR-A-2 834 336, un élément de circuit hydraulique dont l'embout est muni de bossages perforés permettant d'établir un passage de communication de fluide.There is known, for example from publication FR-A-2 834 336, a hydraulic circuit element the end piece of which is provided with perforated bosses making it possible to establish a fluid communication passage.
À partir d'une multiplicité d'éléments de circuit hydraulique de ce type juxtaposés, on réalise des échangeurs de chaleur dans lesquels le fluide passe d'un élément de circuit à l'autre par leurs embouts respectifs au travers des bossages perforés .From a multiplicity of hydraulic circuit elements of this type juxtaposed, heat exchangers are produced in which the fluid passes from one circuit element to the other by their respective ends through perforated bosses.
Un avantage de tels éléments de circuit est qu'ils permettent de remplacer les boîtes collectrices, qui reçoivent habituellement les extrémités des tubes de circulation de fluide, par des embouts moins encombrants.An advantage of such circuit elements is that they make it possible to replace the manifolds, which usually receive the ends of the fluid circulation tubes, with less bulky nozzles.
Un autre avantage réside dans la suppression des plaques collectrices poinçonnées et de l'opération de montage des tubes dans des perforations de petites dimensions et de faible tolérance de cette plaque collectrice.Another advantage lies in the elimination of the punched collecting plates and in the operation of mounting the tubes in small and poorly tolerated perforations of this collecting plate.
Enfin, ce type d' embout offre une grande simplicité d'assemblage et de fabrication.Finally, this type of tip offers great simplicity of assembly and manufacture.
Cependant, les échangeurs de chaleur doivent être munis d'une entrée et d'une sortie de fluide reliées au reste du circuit hydraulique du véhicule. La configuration des échangeurs de chaleur du type décrit ci-dessus rend difficile leur raccordement au reste du circuit hydraulique, en particulier lorsque l'entrée et la sortie doivent être disposées perpendiculairement à l'alignement des embouts de tube, par exemple pour loger au mieux l' échangeur de chaleur dans le véhicule, ou pour adapter sa position à la configuration du reste du circuit hydraulique .However, heat exchangers must have a fluid inlet and outlet connected to the rest of the vehicle's hydraulic system. The configuration of the heat exchangers of the type described above makes it difficult to connect them to the rest of the hydraulic circuit, in particular when the inlet and the outlet must be arranged perpendicular to the alignment of the tube ends, for example to accommodate the best the heat exchanger in the vehicle, or to adapt its position to the configuration of the rest of the hydraulic circuit.
Un objet de l'invention est de surmonter les inconvénients précités .An object of the invention is to overcome the aforementioned drawbacks.
Pour ce faire, l'invention propose un_ embout de tube comportant deux branches écartées 1 ' une de 1 ' autre réunies par un coude de manière à affecter une forme en U présentant des extrémités libres, les branches et le coude délimitant une région intérieure s ' ouvrant vers l'extérieur au niveau des extrémités libres . Cet embout comporte en outre un passage de tube débouchant dans la région intérieure en un emplacement choisi et agencé pour loger l'extrémité d'un tube de circulation de fluide ainsi que deux faces latérales opposées de jonction, chaque face latérale étant agencée pour s'appuyer sur une face latérale d'un embout analogue. Ce type d'embout prévoit le passage d'un fluide en circulation dans un tube dans l'espace intérieur délimité par l'embout. En outre, cette configuration permet d'associer des embouts analogues par 1' intermédiaires des faces latérales opposées de jonction et ainsi, d'associer les espaces intérieurs des embouts pour le passage du fluide.To do this, the invention provides a tube end having two branches spaced apart from one another joined by a bend so as to have a U-shape having free ends, the branches and the bend delimiting an interior region s opening outwards at the free ends. This end piece further comprises a tube passage opening into the interior region at a location selected and arranged to accommodate the end of a fluid circulation tube as well as two opposite lateral faces of junction, each lateral face being arranged to s' press on a side face of a similar tip. This type of nozzle provides for the passage of a fluid circulating in a tube in the interior space delimited by the nozzle. In addition, this configuration makes it possible to associate similar end pieces through the intermediary of the opposite lateral junction faces and thus to associate the interior spaces of the end pieces for the passage of the fluid.
Selon une première configuration, l'embout selon l'invention comprend deux éléments de forme générale en U, chaque élément présentant une section transversale nervurée définissant deux faces d'appui espacées en forme générale en U, une première face d'appui, dite face intérieure, étant en appui mutuel avec la face intérieure de 1 ' autre élément tandis que la seconde face d'appui, dite face extérieure, est agencée pour s'appuyer sur la face extérieure d'un embout de tube analogue et constitue ladite face latérale. Dans cette configuration, l'embout peut être réalisé en deux parties, par exemple par pliage, ce qui simplifie sa fabrication.According to a first configuration, the end piece according to the invention comprises two elements of general U shape, each element having a ribbed cross section defining two support faces spaced in general U shape, a first support face, called face inner, being in mutual support with the inner face of one other element while the second bearing face, called the outer face, is arranged to rest on the face outside of a similar tube end piece and constitutes said lateral face. In this configuration, the tip can be made in two parts, for example by folding, which simplifies its manufacture.
Dans cette configuration, la face intérieure de l'un des éléments se prolonge avantageusement par au moins une patte destinée à être rabattue contre la face intérieure de l'autre élément, de manière à maintenir, au moins provisoirement, les deux éléments de forme générale en U en appui mutuel .In this configuration, the inner face of one of the elements advantageously extends by at least one tab intended to be folded against the inner face of the other element, so as to hold, at least temporarily, the two elements of general shape in U in mutual support.
Dans une autre configuration, l'embout selon l'invention comporte un premier élément de forme générale en U présentant une section transversale nervurée définissant deux faces d'appui espacées en forme générale en U, une première face d'appui dite face intérieure, étant en appui sur une face intérieure généralement rectangulaire d'un second élément de forme générale parallélépipédique, le second élément comprenant en outre une face extérieure de jonction qui constitue ladite face latérale. Dans cette configuration, le second élément permet de fermer l'espace intérieur délimité par le premier élément.In another configuration, the end piece according to the invention comprises a first element of general U-shaped shape having a ribbed cross-section defining two bearing faces spaced in general U-shape, a first bearing face called the inner face, being resting on a generally rectangular inner face of a second element of generally parallelepiped shape, the second element further comprising an outer junction face which constitutes said lateral face. In this configuration, the second element makes it possible to close the interior space delimited by the first element.
Dans cette configuration, la face intérieure du second élément se prolonge avantageusement par au moins une patte destinée à être rabattue contre la face intérieure du premier élément de manière à maintenir en appui mutuel les premier et second éléments, éventuellement dans l'attente d'une opération de brasage, laquelle peut assurer un maintien définitif des premier et second éléments entre eux.In this configuration, the inner face of the second element advantageously extends by at least one tab intended to be folded against the inner face of the first element so as to keep the first and second elements in mutual support, possibly while waiting for a brazing operation, which can ensure permanent maintenance of the first and second elements between them.
Il est alors particulièrement intéressant que la face extérieure de jonction comprenne un orifice de passage de fluide en communication avec la région intérieure entourée d'un collet annulaire évasé offrant une surface de jonction. L'embout peut alors être mis en contact avec des embouts de tube également munis d'un tel collet évasé. Cette configuration permet en outre d'assurer le passage du fluide de l'espace intérieur délimité par le premier élément vers un embout de tube d'un type différent.It is therefore particularly advantageous for the external junction face to include a fluid passage orifice in communication with the internal region surrounded by a flared annular collar providing a junction surface. The end piece can then be brought into contact with tube end pieces also fitted with such a flared collar. This configuration also makes it possible to ensure the passage of the fluid from the interior space delimited by the first element to a tube end piece of a different type.
Dans les deux configurations précitées, l'embout est avantageusement formé d'une bande de tôle métallique présentant une première portion pliée et emboutie pour former le premier élément liée par une languette à une seconde portion pliée et emboutie pour former ledit second élément, ladite languette étant en outre repliée de manière à mettre en appui mutuel les faces intérieures desdits premier et second éléments. Ainsi, l'embout peut être réalisé .par pliage économiquement et en grande série .In the two aforementioned configurations, the end piece is advantageously formed of a strip of metal sheet having a first folded and stamped portion to form the first element linked by a tongue to a second folded and stamped portion to form said second element, said tongue. being further folded so as to mutually support the inner faces of said first and second elements. Thus, the end piece can be produced by folding economically and in large series.
Le passage de tube peut être ménagé à travers l'une des branches, ou bien à travers le coude. Avantageusement, les faces intérieures des deux éléments sont embouties localement de manière à former deux portions complémentaires de paroi du passage de tube. Il est alors possible d'introduire le tube avant le repliement des éléments l'un sur l'autre.The tube passage can be formed through one of the branches, or else through the elbow. Advantageously, the inner faces of the two elements are stamped locally so as to form two complementary wall portions of the tube passage. It is then possible to introduce the tube before the elements are folded over one another.
Dans un mode de réalisation préférentiel de 1 ' invention, le passage de tube présente une section oblongue adaptée pour loger l'extrémité d'un tube plat de circulation de fluide.In a preferred embodiment of the invention, the tube passage has an oblong section adapted to accommodate the end of a flat fluid circulation tube.
L'invention concerne également un élément de circuit hydraulique comprenant au moins un tube de circulation de fluide à deux extrémités et au moins un embout à l'une desdites extrémités du tube, ledit embout étant tel que défini précédemment .The invention also relates to a hydraulic circuit element comprising at least one fluid circulation tube at two ends and at least one nozzle at one of said ends of the tube, said nozzle being as defined above.
L'invention concerne enfin un échangeur de chaleur comprenant une pluralité d'éléments de circuit hydraulique dont les embouts de tube respectifs sont disposés côte à côte de sorte que les extrémités libres des branches des embouts définissent conjointement deux bords longitudinaux opposés d'un boîtier de raccordement. Le boîtier de raccordement ainsi défini offre deux bords sur lesquels peuvent venir s'appuyer d'autres éléments mécaniques.The invention finally relates to a heat exchanger comprising a plurality of hydraulic circuit elements, the respective tube end pieces of which are arranged side by side so that the free ends of the branches of the end pieces jointly define two opposite longitudinal edges of a housing. connection. The housing connection thus defined offers two edges on which other mechanical elements can be supported.
Le boîtier de raccordement est alors avantageusement délimité par deux bords transversaux formés par un embout de tube selon la seconde configuration de l'invention. Le boîtier de raccordement présente alors une ouverture sur laquelle peuvent s'adapter d'autres éléments mécaniques.The connection box is then advantageously delimited by two transverse edges formed by a tube end piece according to the second configuration of the invention. The connection box then has an opening on which other mechanical elements can be adapted.
II est alors intéressant que l'un au moins des embouts de tube formant les bords transversaux du boîtier de raccordement soit muni sur sa face extérieure de jonction d'un orifice de passage de fluide en communication avec la région intérieure entourée d'un collet annulaire évasé offrant une surface de jonction. Dans cette configuration, le boîtier de raccordement peut être connecté à d'autres éléments de circuit hydraulique dont les embouts présentent un collet évasé.It is then advantageous for at least one of the tube end pieces forming the transverse edges of the connection box to be provided on its external junction face with a fluid passage orifice in communication with the interior region surrounded by an annular collar. flared offering a junction surface. In this configuration, the connection box can be connected to other hydraulic circuit elements whose end pieces have a flared collar.
Dans un premier mode de réalisation, 1 ' échangeur de chaleur comprend en outre un élément de tubulure présentant au voisinage d'une extrémité une portion de section rectangulaire de dimensions choisies pour se loger entre les bords longitudinaux et transversaux du boîtier de raccordement . L'élément de tubulure permet le raccordement de l' échangeur de chaleur au reste du circuit hydraulique prévu" par exemple dans le véhicule automobile.In a first embodiment, the heat exchanger further comprises a tubing element having, near one end, a portion of rectangular section of dimensions chosen to be housed between the longitudinal and transverse edges of the connection box. The tubing element allows the connection of the heat exchanger to the rest of the hydraulic circuit provided " for example in the motor vehicle.
L'élément de tubulure comprend alors avantageusement un épaulement de dimensions choisies pour s'appuyer sur les bords longitudinaux et transversaux du boîtier de raccordement, rendant plus facile l'emmanchement de l'élément de tubulure dans le boîtier de raccordement. En outre, 1' épaulement en s ' appuyant sur les bords longitudinaux et transversaux contribue à assurer l'étanchéité entre l'élément de tubulure et le boîtier de raccordement.The tubing element then advantageously comprises a shoulder of dimensions chosen to rest on the longitudinal and transverse edges of the connection box, making it easier to fit the tubing element into the connection box. In addition, the shoulder by pressing on the longitudinal and transverse edges contributes to ensuring the seal between the tubing element and the connection box.
Dans un autre mode de réalisation de l'invention, 1 ' échangeur de chaleur comprend en outre un organe adaptateur présentant une partie de section rectangulaire apte à se loger entre les bords longitudinaux et transversaux du boîtier de raccordement. L'organe adaptateur obstrue l'ouverture du boîtier de raccordement tout en permettant le raccordement d'un élément mécanique standard.In another embodiment of the invention, the heat exchanger further comprises a member adapter having a part of rectangular section able to be housed between the longitudinal and transverse edges of the connection box. The adapter member obstructs the opening of the connection box while allowing the connection of a standard mechanical element.
Il est alors avantageux de pourvoir la partie de section rectangulaire d'un épaulement de dimension choisie pour venir en appui sur les bords longitudinaux et transversaux du boîtier de raccordement pour faciliter l'emmanchement et de contribuer à l'étanchéité.It is then advantageous to provide the rectangular section part with a shoulder of dimension chosen to come to bear on the longitudinal and transverse edges of the connection box to facilitate fitting and to contribute to sealing.
Il est alors intéressant que l'organe adaptateur comprenne en outre une face de liaison avec un organe électrique par exemple une électrovanne.It is then advantageous for the adapter member to further comprise a connection face with an electrical member, for example a solenoid valve.
D'autres caractéristiques et avantages de l'invention apparaîtront à l'examen de la description détaillée ci- après, et des dessins annexés, sur lesquels :Other characteristics and advantages of the invention will appear on examining the detailed description below, and the appended drawings, in which:
- la figure 1 est une vue en perspective d'un embout de tube selon l'invention dans une première configuration,FIG. 1 is a perspective view of a tube end piece according to the invention in a first configuration,
- la figure 2 est une vue en perspective partielle d'un élément de circuit hydraulique selon l'invention comprenant l'embout de tube de la figure 1,FIG. 2 is a partial perspective view of a hydraulic circuit element according to the invention comprising the tube end piece of FIG. 1,
- la figure 3 est une vue en perspective partielle d'un élément de circuit hydraulique muni d'un embout selon- Figure 3 is a partial perspective view of a hydraulic circuit element provided with a nozzle according
1 ' invention dans une seconde configuration,The invention in a second configuration,
- la figure 4 est une vue en perspective éclatée partielle d'un échangeur de chaleur muni d'éléments de circuit hydraulique selon l'invention,FIG. 4 is a partial exploded perspective view of a heat exchanger provided with hydraulic circuit elements according to the invention,
- la figure 5 est une vue en perspective éclatée partielle d'un échangeur de chaleur selon l'invention dans une autre configuration, - la figure 6 est une vue en perspective partielle d'un échangeur de chaleur de 1 ' invention dans une autre configuration encore, etFIG. 5 is a partial exploded perspective view of a heat exchanger according to the invention in another configuration, FIG. 6 is a partial perspective view of a heat exchanger of the invention in yet another configuration, and
- la figure 7 est une vue en perspective partielle d'un échangeur de chaleur de 1 ' invention dans une autre configuration encore.- Figure 7 is a partial perspective view of a heat exchanger of the invention in yet another configuration.
Les dessins annexés pourront, non seulement servir à compléter 1 ' invention, mais aussi contribuer à sa définition, le cas échéant.The accompanying drawings may not only serve to complete the invention, but also contribute to its definition, if necessary.
La figure 1 est une vue en perspective d'un embout de tube 2 selon l'invention dans une première configuration.Figure 1 is a perspective view of a tube tip 2 according to the invention in a first configuration.
L'embout de tube 2 est composé d'un premier élément en U 4 présentant une section transversale nervurée ou en forme de U et d'un second élément en U 6 de forme analogue au premier élément en U 4.The tube end piece 2 is composed of a first U-shaped element 4 having a ribbed or U-shaped cross section and a second U-shaped element 6 of a shape similar to the first U-shaped element 4.
Chacun des éléments en U 4 et 6 se présente sous la forme de deux branches espacées, référencées respectivement 8,10 et 12,14, sensiblement parallèles entre elles et de section nervurée ou en U. Les branches espacées 8,10 (respectivement 12,14) sont reliées entre elles à l'une de leurs extrémités par un coude 16 (respectivement 18) de forme demi-circulaire. Les branches espacée 8,10 (respectivement 12,14) de l'élément en U 4 (respectivement 6) possèdent chacune une extrémité libre 20, 22 sous forme d'une surface plane en U sensiblement perpendiculaire à la direction de la branche 8,10 (respectivement 12,14) à laquelle elle correspond.Each of the U-shaped elements 4 and 6 is in the form of two spaced branches, referenced respectively 8.10 and 12.14, substantially parallel to each other and of ribbed or U-shaped section. The spaced branches 8.10 (respectively 12, 14) are interconnected at one of their ends by a bend 16 (respectively 18) of semi-circular shape. The spaced apart branches 8,10 (respectively 12,14) of the U-shaped element 4 (respectively 6) each have a free end 20, 22 in the form of a flat U-shaped surface substantially perpendicular to the direction of the branch 8, 10 (respectively 12.14) to which it corresponds.
Chacun des éléments en U 4 et 6 présente, de par sa section nervurée, une première face d'appui 28 (respectivement 30), ou face intérieure, en forme de U et en appui mutuel avec la face intérieure 30 (respectivement 28) de l'élément en U 4 ou 6 analogue. Chacun des éléments en U 4 et 6 comporte également une seconde face d'appui 32 (respectivement 34), ou face extérieure, également en forme de U, sensiblement parallèle à la première face d'appui 28 (respectivement 30) et de forme généralement identique.Each of the U-shaped elements 4 and 6 has, by virtue of its ribbed section, a first bearing face 28 (respectively 30), or inner face, U-shaped and in mutual support with the inner face 30 (respectively 28) of the similar U-shaped element 4 or 6. Each of the U-shaped elements 4 and 6 has also a second bearing face 32 (respectively 34), or outer face, also in the shape of a U, substantially parallel to the first bearing face 28 (respectively 30) and of generally identical shape.
Les faces extérieures 32 et 34 des éléments en U 4 et 6 de l'embout de tube 2 offrent chacune une zone de jonction permettant l'appui d'une face extérieure d'un embout de tube 2 analogue. La réunion des éléments en U 4 et 6 confère à l'embout de tube 2 une forme générale de U. L'embout de tube 2 présente ainsi deux branches espacées et parallèles entre elles formées par la réunion des branches espacées 8 et 12 d'une part, 10 et 14 d'autre part, des éléments en U 4 et 6. Les branches espacées de l'embout de tube 2 sont reliées par un coude demi-circulaire formé par la réunion des coudes 16 et 18 des éléments en U 4 et 6.The external faces 32 and 34 of the U-shaped elements 4 and 6 of the tube end piece 2 each provide a junction zone allowing the support of an external face of a similar tube end piece 2. The union of the U-shaped elements 4 and 6 gives the tube end-piece 2 a general U-shape. The tube end-piece 2 thus has two spaced apart and parallel branches formed by the meeting of the spaced apart branches 8 and 12 of on the one hand, 10 and 14 on the other hand, U-shaped elements 4 and 6. The branches spaced from the tube end 2 are connected by a semi-circular bend formed by the meeting of the elbows 16 and 18 of the U-shaped elements 4 and 6.
Les branches espacées et le coude demi-circulaire de l'embout de tube 2 délimitent un espace intérieur ouvert s ' ouvrant vers l'extérieur au niveau des extrémités libres des branches, lesquelles sont formées de la réunion des extrémités libres 20 et 24 des branches 8 et 12 d'une part et des extrémités libres 22 et 26 des branches 10 et 14 d' autre part .The spaced branches and the semicircular bend of the tube end 2 define an open interior space opening outwards at the free ends of the branches, which are formed from the union of the free ends 20 and 24 of the branches 8 and 12 on the one hand and free ends 22 and 26 of the branches 10 and 14 on the other hand.
Chacun des éléments en U 4 et 6 présente un prolongement de matière de la face intérieure 28 (respectivement 30) dans la direction de la branche 8 (respectivement 12) et reliant l'extérieur du coude 16 (respectivement 18) .Each of the U-shaped elements 4 and 6 has an extension of material from the inner face 28 (respectively 30) in the direction of the branch 8 (respectively 12) and connecting the outside of the elbow 16 (respectively 18).
La face intérieure 28 et 30 de chacun des éléments en U 4 et 6 présente au niveau de l'une des branches 8 et 12 un embouti 36 et 38 formant une portion (respectivement une portion complémentaire) d'un logement oblong 40 dont la forme correspond à la section transversale d'un tube plat 42 (représenté sur la figure 3) connu de l'homme du métier. La réunion des premier et second éléments en U 4 et 6 forme au niveau des emboutis 36 et 38 le logement oblong 40, lequel traverse les branches 8 et 12 pour déboucher dans 1 ' espace intérieur de 1 ' embout de tube 2. Le logement oblong 40 est destiné à accueillir l'extrémité du tube de circulation de fluide plat 42. Ainsi, le liquide en circulation à l'intérieur du tube plat 42 peut s'écouler dans 1 ' espace intérieur de 1 ' embout de tube 2.The inner face 28 and 30 of each of the U-shaped elements 4 and 6 has at the level of one of the branches 8 and 12 a stamped part 36 and 38 forming a portion (respectively a complementary portion) of an oblong housing 40 whose shape corresponds to the cross section of a flat tube 42 (shown in Figure 3) known to those skilled in the art. The meeting of the first and second U-shaped elements 4 and 6 forms at the level of the stampings 36 and 38 the oblong housing 40, which crosses the branches 8 and 12 to open out into 1 interior space of one end of tube 2. The oblong housing 40 is intended to receive the end of the flat fluid circulation tube 42. Thus, the liquid circulating inside the flat tube 42 can flow in the interior space of the tube end 2.
La face intérieure 28 du premier élément en U 4 se prolonge extérieurement par une première patte rectangulaire 44 dont la longueur est disposée perpendiculairement à la direction de la branche 8, ladite première patte 44 étant repliée contre la face intérieure 30 du second élément en U 6 de l'embout de tube 2. A l'opposé par rapport au logement oblong 40, la face intérieure 28 du premier élément en U 4 se prolonge par une seconde patte rectangulaire 46, semblable à la première patte rectangulaire 44 décrite plus haut et dont la longueur est disposée suivant la direction de la branche 8, ladite seconde patte 46 étant également rabattue contre la face intérieure du second élément en U 6.The inner face 28 of the first U-shaped element 4 is extended externally by a first rectangular tab 44 whose length is arranged perpendicular to the direction of the branch 8, said first tab 44 being folded against the inner face 30 of the second U-shaped element 6 of the tube end piece 2. Opposite to the oblong housing 40, the inner face 28 of the first U-shaped element 4 is extended by a second rectangular tab 46, similar to the first rectangular tab 44 described above and whose the length is arranged in the direction of the branch 8, said second tab 46 also being folded against the inner face of the second U-shaped element 6.
Une languette rectangulaire 48 relie la face intérieur 28 du premier élément en U 4 au niveau de la branche 10 à la face intérieure 30 du second élément en U 6 au niveau de la branche 14, extérieurement à l'embout de tube 2. La longueur de la languette rectangulaire 48 est disposée suivant la direction des branches 10 et 14.A rectangular tongue 48 connects the inner face 28 of the first U-shaped element 4 at the branch 10 to the inner face 30 of the second U-shaped element 6 at the branch 14, outside the tube end piece 2. The length of the rectangular tongue 48 is arranged in the direction of the branches 10 and 14.
Les première et seconde pattes rectangulaires 44 et 46 et la languette rectangulaire 48 coopèrent afin de maintenir les premier et second éléments en U 4 et 6 en contact avant une opération de brasage, laquelle assure définitivement l'assemblage des premier et second éléments en U 4 et 6 de manière à former l'embout de tube 2.The first and second rectangular tabs 44 and 46 and the rectangular tongue 48 cooperate in order to keep the first and second U-shaped elements 4 and 6 in contact before a brazing operation, which definitively assembles the first and second U-shaped elements 4 and 6 so as to form the end piece of tube 2.
Bien entendu, les premières et secondes pattes rectangulaires 44 et 46 peuvent être prévues au niveau des branches opposées 12 et 16, sur le second élément en U 6 ou bien encore chacune sur un élément en U 4 et 6. De manière préférentielle, l'embout de tube 2 est réalisé à partir d'une unique bande de tôle présentant une première portion destinée à être pliée et emboutie de manière à former le premier élément en U 4, reliée par l'intermédiaire de la languette rectangulaire 48 à une seconde portion destinée à être emboutie et pliée de manière à former le second élément en U 6. Une fois les premier et second éléments en U formés, ces derniers sont amenés l'un contre l'autre de manière à mettre en contact leurs faces intérieures 28 et 30 respectives, la languette 48 étant de fait repliée de façon à former une boucle.Of course, the first and second rectangular tabs 44 and 46 can be provided at the level of the opposite branches 12 and 16, on the second U-shaped element 6 or even each on a U-shaped element 4 and 6. Preferably, the tube end piece 2 is produced from a single sheet metal strip having a first portion intended to be folded and stamped so as to form the first U-shaped element 4, connected by means of the tongue rectangular 48 to a second portion intended to be stamped and folded so as to form the second U-shaped element 6. Once the first and second U-shaped elements are formed, the latter are brought against each other so as to set contact their respective inner faces 28 and 30, the tongue 48 being in fact folded back so as to form a loop.
On note ici, qu'une fois les premier et second éléments en U 4 et 6 fixés l'un à l'autre, par exemple à l'aide d'une opération de brasage, la languette rectangulaire 48 n'a plus d'utilité et peut donc être découpée.It is noted here that once the first and second U-shaped elements 4 and 6 are fixed to each other, for example using a brazing operation, the rectangular tongue 48 no longer has any utility and can therefore be cut.
La figure 2 est une vue en perspective de l'embout de tube 2 de la figure 1 associé à un tube plat 42 de circulation de fluide introduit dans le logement de passage de tube 40. Cette association du tube plat 42 et de l'embout de tube 2 constitue un élément de circuit hydraulique.Figure 2 is a perspective view of the tube end 2 of Figure 1 associated with a flat tube 42 for fluid circulation introduced into the tube passage housing 40. This association of the flat tube 42 and the end piece of tube 2 constitutes a hydraulic circuit element.
La figure 3 est une vue en perspective d'un élément de circuit hydraulique constitué du tube plat 42 et d'un embout de tube 50 selon l'invention dans une seconde configuration.Figure 3 is a perspective view of a hydraulic circuit element consisting of the flat tube 42 and a tube end piece 50 according to the invention in a second configuration.
L'embout de tube 50 de la figure 3 se compose du premier élément en U 4 tel qu'illustré sur les figures 1 et 2 associé à un élément de fermeture 52 d'allure générale parallélépipédique. L'élément de fermeture 52 présente une première face d'appui, ou face intérieure 54, de forme générale rectangulaire sur laquelle vient en contact la face intérieure 28 du premier élément en U 4. L'élément de fermeture 52 présente en outre une seconde face d'appui, ou face extérieure 56, de forme générale également rectangulaire. L'élément de fermeture 52 étant obtenu à partir d'une bande de tôle, les faces intérieure 54 et extérieure 56 sont deux faces de la même bande de tôle. L'élément de fermeture 50 présente un orifice circulaire 58 ménagé au voisinage du centre des faces intérieure 54 et extérieure 56 et qui traverse l'élément de fermeture 52 de par en par pour déboucher au niveau de l'espace intérieur délimité par les branches 8 et 10 et le coude 16 du premier élément en U 4. L'orifice circulaire 58 est entouré par un collet évasé 60 faisant saillie de la face extérieure 56. Le collet évasé 60 offre une surface de jonction annulaire 62 sensiblement parallèle à la face extérieure 56. Les première et seconde pattes rectangulaires 44 et 46 du premier élément en U 4 sont rabattue, de manière analogue à ce qui a été décrit plus haut, contre la face extérieure 56 de l'élément de fermeture 52. L'élément de fermeture 52 présente au niveau de la face intérieure 54 un embouti 64 de forme analogue à l'embouti 38 de l'embout de tube 2 de la figure 1. L'embouti 64 forme avec l'embouti 36 du premier élément en U 4 , un logement de section oblongue 66 débouchant dans l'espace intérieur du premier élément en U 4 et apte à recevoir l'extrémité du tube plat de circulation de fluide 42.The tube end piece 50 of FIG. 3 consists of the first U-shaped element 4 as illustrated in FIGS. 1 and 2 associated with a closure element 52 of generally parallelepipedal appearance. The closing element 52 has a first bearing face, or internal face 54, of generally rectangular shape on which the internal face 28 of the first U-shaped element comes into contact 4. The closing element 52 also has a second bearing face, or outer face 56, also generally rectangular in shape. The closing element 52 being obtained from a sheet metal strip, the inner faces 54 and outer 56 are two faces of the same strip of sheet metal. The closure element 50 has a circular orifice 58 formed in the vicinity of the center of the interior 54 and exterior 56 faces and which passes through the closure element 52 in turn to open out at the interior space delimited by the branches 8 and 10 and the elbow 16 of the first U-shaped element 4. The circular orifice 58 is surrounded by a flared collar 60 projecting from the external face 56. The flared collar 60 offers an annular junction surface 62 substantially parallel to the external face 56. The first and second rectangular tabs 44 and 46 of the first U-shaped element 4 are folded, in a manner analogous to what has been described above, against the external face 56 of the closing element 52. The closing element 52 has at the inner face 54 a stamped 64 of shape similar to the stamped 38 of the tube end 2 of Figure 1. The stamped 64 forms with the stamped 36 of the first U-shaped element 4, a logeme nt of oblong section 66 opening into the interior of the first U-shaped element 4 and capable of receiving the end of the flat fluid circulation tube 42.
On note que les logements de tube 40 et 66 des embouts de tube 2 et 50 peuvent être munis intérieurement d'un épaule- ment de manière à arrêter de manière axiale le tube de circulation de fluide 42 lors de son introduction dans le logement .It will be noted that the tube housings 40 and 66 of the tube ends 2 and 50 can be provided internally with a shoulder so as to axially stop the fluid circulation tube 42 when it is introduced into the housing.
La figure 4 est une vue en perspective d'une portion d'un échangeur de chaleur formé par empilement d'éléments de circuit hydraulique tels que • représentés sur la figure 2 et sur la figure 3.FIG. 4 is a perspective view of a portion of a heat exchanger formed by stacking of hydraulic circuit elements such as • shown in FIG. 2 and in FIG. 3.
Une série, ou empilement, d'embouts de tube 2 selon la première configuration de l'invention sont disposés côte à côte en contact les uns avec les autres par leurs faces extérieures 32 et 34 respectives. Les extrémités libres 20 et 24 d'une part, et 22 et 26 d'autre part, des embouts de tube 2 disposés côte à côte définissent par leur alignement deux bords longitudinaux 70 et 72 espacés et sensiblement parallèles entre eux. Aux embouts de tube 2 situés aux extrémités de l'empilement sont joints, par l'intermédiaire des faces extérieures 34 et 32, des embouts de tube 50 selon la seconde configuration de l'invention.A series, or stack, of tube end pieces 2 according to the first configuration of the invention are arranged side by side in contact with each other by their respective external faces 32 and 34. The free ends 20 and 24 on the one hand, and 22 and 26 on the other hand, tube end pieces 2 arranged side by side define by their alignment two longitudinal edges 70 and 72 spaced apart and substantially parallel to one another. The tube ends 2 located at the ends of the stack are joined, via the outer faces 34 and 32, tube ends 50 according to the second configuration of the invention.
Les branches 8 et 12 d'un côté et 10 et 14 de l'autre des embouts de tube 2 jointes les unes aux autres ainsi que les coudes 16 et 18 également liés les uns aux autres délimitent en partie un boîtier de raccordement 78 "fermé latéralement par les éléments de fermeture 52 des embouts de tube 50 situés à l'extrémité de l'empilement. Les bords longitudinaux 70 et 72 ainsi que les éléments de fermeture 52 définissent une ouverture 76 de section sensiblement rectangulaire du boîtier de raccordement 78. Sur la surface annulaire de jonction 62 des embouts de tube 50 disposés aux extrémités du boîtier de raccordement viennent en appui des éléments de circuit hydraulique dont les embouts 80 présentent de part et d'autre un collet évasé semblable au collet évasé 62 de l'embout de tube 50 présentant une surface annulaire de jonction. Ces embouts de tube 80, qui ne seront pas décrits en détail ici, présentent un logement de tube de circulation de fluide et sont traversés par un passage de communication de fluide dans lequel débouche le logement de tube. Disposés côte à côte en appui mutuel par l'intermédiaire des surfaces de jonction des collets évasés, les embouts de tube 80 définissent un conduit de circulation de fluide. Un tel conduit est disposé à chacune des extrémités du boîtier de raccordement 78.The branches 8 and 12 on one side and 10 and 14 on the other of the tube end pieces 2 joined to one another as well as the elbows 16 and 18 also linked to each other partially define a closed connection box 78 " laterally by the closing elements 52 of the tube end pieces 50 situated at the end of the stack The longitudinal edges 70 and 72 as well as the closing elements 52 define an opening 76 of substantially rectangular cross section of the connection box 78. On the annular junction surface 62 of the tube end pieces 50 disposed at the ends of the connection box come to bear hydraulic circuit elements, the end pieces 80 of which have on each side a flared collar similar to the flared collar 62 on the end piece tube 50 having an annular junction surface. These tube end pieces 80, which will not be described in detail here, have a fluid circulation tube housing and are tr showered by a fluid communication passage into which the tube housing opens. Arranged side by side in mutual support via the junction surfaces of the flared collars, the tube ends 80 define a fluid circulation conduit. Such a conduit is disposed at each end of the connection box 78.
L'ouverture rectangulaire 76 du boîtier de raccordement 78 permet d'emmancher des éléments de circuit hydraulique destinés à assurer la liaison entre 1 ' échangeur de chaleur et le reste du circuit hydraulique présent dans le véhicule automobile.The rectangular opening 76 of the connection box 78 allows the fitting of hydraulic circuit elements intended to ensure the connection between one heat exchanger and the rest of the hydraulic circuit present in the motor vehicle.
La figure 4 illustre un élément de tubulure 90 lequel se présente sous la forme d'une portion cylindrique creuse 92 se prolongeant à l'une de ses extrémités par une portion parallélépipédique 94 creuse également. À son extrémité libre, la portion cylindrique 92 présente une collerette annulaire 96 laquelle peut être utilisée par exemple en coopération avec un anneau de serrage pour maintenir l'extrémité d'un flexible faisant partie du circuit hydraulique. La portion parallélépipédique 94 se prolonge à son extrémité libre par une portion de section rectangulaire 96 de dimension inférieure à celle de la portion 94 de manière à former entre les portions 94 et 96 un épaulement perpendiculaire à la direction axiale de l'élément de tubulure 90. La portion de section rectangulaire 96 est de dimension choisie de manière à se loger à 1 ' intérieur du boîtier de raccordement 78. En particulier, la surface extérieure de la portion de section rectangulaire 96 vient en appui sur les faces intérieures des branches 8, 10, 12 et 14 formant une partie des parois du boîtier de raccordement 78. L' épaulement présent entre les portions 94 et 96 vient s'appuyer d'une part contre les faces des extrémités libres des éléments en U, d'autre part contre la tranche 74 des éléments de fermeture 52. La portion de section rectangulaire 96 permet ainsi de mettre en position l'élément de tubulure 90 par rapport au boîtier de raccordement tandis que 1 ' épaulement , en venant en appui sur les extrémités libres, facilite l'emmanchement de l'élément de tubulure 90 en faisant fonction de butée. L'appui entre l' épaulement et les extrémités libres des éléments en U contribue à assurer l'étanchéité de la liaison entre l'élément de tubulure 90 et le boîtier de raccordement 78. On remarque ici que la portion 96 peut être prévue de section carrée éventuellement. L'élément de tubulure 90 peut être utilisé en tant qu'arrivée de fluide ou sortie de fluide. On remarque que plusieurs boîtiers de raccordement 78 peuvent être prévus de la même manière dans un même échangeur de chaleur afin de prévoir un premier élément de tubulure 90 pour l'arrivée du fluide et un second élément de tubulure 90 pour la sortie du fluide. La figure 5 illustre selon une vue en perspective éclatée une autre configuration d'un échangeur de chaleur selon 1 ' invention.FIG. 4 illustrates a tubing element 90 which takes the form of a hollow cylindrical portion 92 extending at one of its ends by a portion parallelepiped 94 also digs. At its free end, the cylindrical portion 92 has an annular collar 96 which can be used for example in cooperation with a clamping ring to hold the end of a hose forming part of the hydraulic circuit. The parallelepiped portion 94 is extended at its free end by a portion of rectangular section 96 of dimension smaller than that of portion 94 so as to form between the portions 94 and 96 a shoulder perpendicular to the axial direction of the tubing element 90 The rectangular section portion 96 is of dimension chosen so as to be housed inside the connection box 78. In particular, the outer surface of the rectangular section portion 96 comes to bear on the inner faces of the branches 8, 10, 12 and 14 forming part of the walls of the connection box 78. The shoulder present between the portions 94 and 96 comes to bear on the one hand against the faces of the free ends of the U-shaped elements, on the other hand against the edge 74 of the closing elements 52. The rectangular section portion 96 thus makes it possible to position the tubing element 90 relative to the connection box. nt while one shoulder, coming to bear on the free ends, facilitates the fitting of the tubing element 90 by acting as a stop. The support between the shoulder and the free ends of the U-shaped elements contributes to sealing the connection between the tubing element 90 and the connection box 78. It is noted here that the portion 96 can be provided with a cross-section. possibly square. The tubing member 90 can be used as a fluid inlet or a fluid outlet. It is noted that several connection boxes 78 can be provided in the same way in the same heat exchanger in order to provide a first element of tubing 90 for the arrival of the fluid and a second element of tubing 90 for the outlet of the fluid. FIG. 5 illustrates in an exploded perspective view another configuration of a heat exchanger according to the invention.
Dans cette configuration est prévu un raccord 100 de forme générale parallélépipédique. Le raccord 100 présente deux orifices sensiblement circulaires 102 et 104 le traversant et permettant de connecter des tuyaux et/ou des tubes liés au reste du circuit hydraulique présent dans le véhicule, par exemple pour l'entrée et la sortie de fréon dans le cas d'un condenseur. Le raccord 100 se prolonge à son autre extrémité par une portion de section rectangulaire 96 similaire à la portion de section rectangulaire 96 illustrée sur la figure 4. En particulier, entre le raccord 100 et la portion de section rectangulaire 96 est ménagé un épaulement constitué par un rétrécissement de section. De manière similaire à ce qui a été décrit plus haut, la portion de section rectangulaire 96 se loge à 1 ' intérieur du boîtier de raccordement 78 au travers de l'ouverture 76, les faces extérieures venant en appui sur les faces intérieures des branches des éléments en U. L' épaulement du raccord 100 vient bien sûr en appui sur les extrémités libres 20, 22, 24 et 26 des embouts de tube 2 et 50:In this configuration, a connector 100 of generally parallelepiped shape is provided. The connector 100 has two substantially circular orifices 102 and 104 passing through it and making it possible to connect pipes and / or tubes linked to the rest of the hydraulic circuit present in the vehicle, for example for the entry and exit of freon in the case of 'a condenser. The connector 100 is extended at its other end by a portion of rectangular section 96 similar to the portion of rectangular section 96 illustrated in FIG. 4. In particular, between the fitting 100 and the portion of rectangular section 96 is provided a shoulder formed by a narrowing of section. Similarly to what has been described above, the rectangular section portion 96 is housed inside the connection box 78 through the opening 76, the external faces coming to bear on the internal faces of the branches of the U-shaped elements. The shoulder of the connector 100 of course bears on the free ends 20, 22, 24 and 26 of the tube ends 2 and 50:
La figure 6 illustre une autre configuration encore d'un échangeur de chaleur selon l'invention. Dans cette configuration, est prévu un organe adaptateur 110 présentant une portion de section rectangulaire 96 comme décrit plus haut, laquelle vient se loger dans l'ouverture 76 du boîtier de raccordement 78. À l'opposé, l'organe adaptateur 110 comprend une plaque métallique 112 dans laquelle est découpé un passage 113 de section rectangulaire. La plaque métallique 112 est également pourvue de deux perçages 114 destinés à recevoir des vis de fixation, lesquelles permettent de solidariser un organe électrique du type électrovanne 116 par exemple avec le boîtier de raccordement. L ' électrovanne 116 est capable de mettre en mouvement un organe de cloisonnement 118 lequel est de forme adaptée à la section intérieure des embouts de tube 2. Ainsi mis en place dans une première position par 1 ' électrovanne 116, l'élément de cloisonnement 118 obstrue complètement la section du conduit de passage de fluide formé par la réunion des embouts de tube 2. Lorsque 1 ' électrovanne 116 est actionnée, l'organe de cloisonnement 118 est mis en rotation et vient se positionner dans une position angulaire voisine de 90°. Dans cette position, l'organe de cloisonnement 118 n'obstrue plus le passage du fluide.FIG. 6 illustrates yet another configuration of a heat exchanger according to the invention. In this configuration, there is provided an adapter member 110 having a rectangular section portion 96 as described above, which is received in the opening 76 of the connection box 78. In contrast, the adapter member 110 comprises a plate metal 112 in which is cut a passage 113 of rectangular section. The metal plate 112 is also provided with two holes 114 intended to receive fixing screws, which make it possible to secure an electrical member of the solenoid valve type 116 for example with the connection box. The solenoid valve 116 is capable of setting in motion a partitioning member 118 which is of a shape adapted to the internal section of the end fittings. tube 2. Thus put in place in a first position by the solenoid valve 116, the partitioning element 118 completely obstructs the section of the fluid passage duct formed by the union of the tube end pieces 2. When the solenoid valve 116 is actuated , the partition member 118 is rotated and is positioned in an angular position close to 90 °. In this position, the partition member 118 no longer obstructs the passage of the fluid.
Ce type de configuration peut être utilisé afin de faire varier le nombre de passes du fluide en circulation à l'intérieur de 1 ' échangeur de chaleur.This type of configuration can be used in order to vary the number of passes of the fluid circulating inside the heat exchanger.
On note qu'il peut être prévu plusieurs boîtiers de raccordement 78 dans un même échangeur de chaleur, par exemple pour pourvoir 1 ' échangeur de chaleur d'un élément de tubulure pour l'arrivée du fluide et d'un élément de tubulure pour la sortie du fluide.It should be noted that several connection boxes 78 may be provided in the same heat exchanger, for example to provide the heat exchanger with a tubing element for the arrival of the fluid and a tubing element for the fluid outlet.
Bien qu'il ait été décrit ici que le logement de tube 40 est disposé au niveau des branches d'un embout de tube en U 2, il est tout à fait possible de prévoir ce logement 40 au niveau du coude, comme on peut le voir sur la figure 7. En fait, on peut prévoir le logement 20 à différentes positions angulaires sur le coude, faisant ainsi varier l'angle entre l'ouverture 76 du boîtier de raccordement 78 et l'axe longitudinal des tubes 42, afin d'adapter, par exemple, l'entrée et la sortie de fluide à la configuration du reste du circuit hydraulique.Although it has been described here that the tube housing 40 is disposed at the branches of a U-tube end piece 2, it is quite possible to provide this housing 40 at the elbow, as can be see in Figure 7. In fact, one can provide the housing 20 at different angular positions on the elbow, thus varying the angle between the opening 76 of the connection box 78 and the longitudinal axis of the tubes 42, in order 'Adapt, for example, the fluid inlet and outlet to the configuration of the rest of the hydraulic circuit.
Il a été décrit un élément de jonction 52 muni d'un collet évasé mais d'autre formes permettant le contact entre des embouts de tube pourraient être envisagées. On note également que le boîtier de raccordement 78 peut comprendre à l'une de ses extrémités un élément de jonction 52 sans orifice ni collet, dans le cas où le boîtier de raccordement 78 est disposé à une extrémité de 1 ' échangeur de chaleur.It has been described a junction element 52 provided with a flared collar but other shapes allowing contact between tube ends could be envisaged. It is also noted that the connection box 78 may comprise at one of its ends a junction element 52 without orifice or collar, in the case where the connection box connection 78 is arranged at one end of the heat exchanger.
L'invention s'applique à différents types d' échangeur de chaleur, en particulier à des evaporateurs, des condenseurs et des échangeurs à gaz carbonique .The invention applies to different types of heat exchanger, in particular to evaporators, condensers and carbon dioxide exchangers.
L'invention ne se limite pas aux modes de réalisation décrits ci -avant, seulement à titre d'exemple, mais elle enveloppe toutes les variantes que pourra envisager l'homme de l'art dans le cadre des revendications ci-après. The invention is not limited to the embodiments described above, only by way of example, but it covers all the variants that a person skilled in the art may envisage within the framework of the claims below.

Claims

Revendications claims
1. Embout de tube (2,-50) pour un élément de circuit hydraulique, caractérisé en ce qu'il comporte deux branches- écartées l'une de l'autre réunies par un coude de manière à affecter une forme en U présentant des extrémités libres, les branches et le coude délimitant une région intérieure s 'ouvrant vers l'extérieur au niveau des extrémités libres, et en ce qu'il comporte en outre un passage de tube (40; 66) débouchant dans la région intérieure en un emplacement choisi et agencé pour loger l'extrémité d'un tube de circulation de fluide (42) ainsi que deux faces latérales opposées de jonction, chaque face latérale étant agencée pour s'appuyer sur une face latérale d'un embout analogue.1. Tube end piece (2, -50) for a hydraulic circuit element, characterized in that it comprises two branches- spaced apart from each other joined by an elbow so as to have a U shape having free ends, the branches and the elbow delimiting an interior region opening towards the exterior at the free ends, and in that it further comprises a tube passage (40; 66) opening into the interior region in a location chosen and arranged to accommodate the end of a fluid circulation tube (42) as well as two opposite side faces of junction, each side face being arranged to rest on a side face of a similar nozzle.
2. Embout de tube selon la revendication 1, caractérisé en ce qu'il comprend deux éléments (4; 6) de forme générale de U, chaque élément (4,-6) présentant .une section transversale nervurée définissant deux faces d'appui (28 ; 30 ; 34 ;32) espacées en forme générale de U, une première face d'appui, dite face intérieure (28;30), étant en appui mutuel avec la face intérieure (28; 30) de l'autre élément (4; 6) tandis que la seconde face d'appui, dite face extérieure (32;34), est agencée pour s'appuyer sur la face extérieure d'un embout de tube analogue et constitue ladite face latérale.2. Tube end piece according to claim 1, characterized in that it comprises two elements (4; 6) of general U shape, each element (4, -6) having .a ribbed cross section defining two bearing faces (28; 30; 34; 32) spaced in a general U shape, a first bearing face, called the inner face (28; 30), being in mutual support with the inner face (28; 30) of the other element (4; 6) while the second bearing face, called the outer face (32; 34), is arranged to rest on the outer face of a similar tube end piece and constitutes said lateral face.
3. Embout de tube selon la revendication 2 , caractérisé en ce que la face intérieure (28) de l'un des éléments (4) se prolonge par au moins une patte (44; 46) destinée à être rabattue contre la face intérieure (30) de l'autre élément (6) .3. Tube end piece according to claim 2, characterized in that the inner face (28) of one of the elements (4) is extended by at least one tab (44; 46) intended to be folded against the inner face ( 30) of the other element (6).
4. Embout de tube selon la revendication 1, caractérisé en ce qu'il comporte un premier élément (4) de forme générale de U présentant une section transversale nervurée définissant deux faces d'appui (28; 32) espacées en forme générale de U, une première face d'appui, dite face intérieure (28) , étant en appui sur une face intérieure (54) généralement rectangulaire d'un second élément (52) de forme générale parallélépipédique, le second élément (52) comprenant en outre une face extérieure de jonction (56) qui constitue ladite face latérale.4. Tube end piece according to claim 1, characterized in that it comprises a first element (4) of general U shape having a ribbed cross section defining two bearing faces (28; 32) spaced in general U shape , a first bearing face, called the inner face (28), being supported on an inner face (54) generally rectangular of a second element (52) of generally parallelepiped shape, the second element (52) further comprising an outer junction face (56) which constitutes said lateral face.
5. Embout de tube selon la revendication 4, caractérisé en ce que la face intérieure (54) du second élément (52) se prolonge par au moins une patte (44,-46) destinée à être rabattue contre la face intérieure (28) du premier élément.5. Tube end piece according to claim 4, characterized in that the inner face (54) of the second element (52) is extended by at least one lug (44, -46) intended to be folded against the inner face (28) of the first element.
6. Embout de tube selon l'une des revendications 4 et 5, caractérisé en ce que la face extérieure de jonction (56) comprend un orifice de passage de fluide (58) en communication avec la région intérieure entouré d'un collet annulaire évasé (60) offrant une surface de jonction (62) .6. Tube end according to one of claims 4 and 5, characterized in that the external junction face (56) comprises a fluid passage orifice (58) in communication with the internal region surrounded by a flared annular collar (60) providing a joining surface (62).
7. Embout de tube selon l'une des revendications 2 à 6, caractérisé en ce qu'il est formé d'une bande de tôle métallique présentant une première portion pliée et emboutie pour former ledit premier élément (4) liée par une languette (48) à une seconde portion pliée et emboutie pour former ledit second élément (6;58), ladite languette (48) étant en outre repliée de manière à mettre en appui mutuel les faces intérieures (28; 30,-54) desdits premier et second éléments .7. Tube end according to one of claims 2 to 6, characterized in that it is formed of a strip of metal sheet having a first portion folded and stamped to form said first element (4) linked by a tongue ( 48) to a second folded and stamped portion to form said second element (6; 58), said tongue (48) being further folded so as to mutually support the inner faces (28; 30, -54) of said first and second elements.
8. Embout de tube selon l'une des revendications précédentes, caractérisé en ce que le passage de tube (40; 66) est ménagé à travers l'une des branches.8. Tube end piece according to one of the preceding claims, characterized in that the tube passage (40; 66) is formed through one of the branches.
9. Embout de tube selon l'une des revendications 1 à 7, caractérisé en ce que le passage de tube (40; 66) est ménagé à travers le coude.9. Tube end piece according to one of claims 1 to 7, characterized in that the tube passage (40; 66) is formed through the elbow.
10. .Embout de tube selon l'une des revendications 2 à 9, caractérisé en ce que les faces intérieures (28;30;54) des deux éléments (4; 6; 52) sont embouties localement de manière à former deux portions complémentaires de (36; 38; 64) paroi du passage de tube (40;66). 10. .Cap end according to one of claims 2 to 9, characterized in that the inner faces (28; 30; 54) of the two elements (4; 6; 52) are stamped locally so as to form two complementary portions of (36; 38; 64) wall of the tube passage (40; 66).
11. Embout de tube selon l'une des revendications précédentes, caractérisé en ce que le passage de tube (40; 66) présente une section oblongue adaptée pour loger l'extrémité d'un tube plat (42) de circulation de fluide.11. Tube end piece according to one of the preceding claims, characterized in that the tube passage (40; 66) has an oblong section adapted to accommodate the end of a flat tube (42) for circulating fluid.
12. Elément de circuit hydraulique pour un échangeur de chaleur, caractérisé en ce qu'il comprend au moins un tube de circulation de fluide (42) à deux extrémités et au moins un embout (2;50) à l'une desdites extrémités du tube (42), ledit embout (2;50) étant tel que défini dans l'une des revendications 1 à 11.12. Hydraulic circuit element for a heat exchanger, characterized in that it comprises at least one fluid circulation tube (42) at two ends and at least one end piece (2; 50) at one of said ends of the tube (42), said end piece (2; 50) being as defined in one of claims 1 to 11.
13. Echangeur de chaleur caractérisé en ce qu'il comprend une pluralité d'éléments de circuit hydraulique selon la revendication 12, dont les embouts (2) de tube respectifs sont disposés côte à côte en sorte que les extrémités libres (20;22 ;24;26) des branches (8 ; 10 ; 12 ; 14) des embouts définissent conjointement deux bords longitudinaux (70;72)' opposés d'un boîtier de raccordement (78) .13. Heat exchanger characterized in that it comprises a plurality of hydraulic circuit elements according to claim 12, the ends of which (2) of respective tube are arranged side by side so that the free ends (20; 22; 24; 26) of the branches (8; 10; 12; 14) of the end pieces jointly define two opposite longitudinal edges (70; 72) ' of a connection box (78).
14. Echangeur de chaleur selon la revendication 13, caractérisé en ce que le boîtier de raccordement (78) est en outre délimité par deux bords transversaux (74) formés par un embout (50) de tube tel que défini dans la revendication 4.14. Heat exchanger according to claim 13, characterized in that the connection box (78) is further delimited by two transverse edges (74) formed by an end piece (50) of tube as defined in claim 4.
15. Echangeur de chaleur selon la revendication 14, caractérisé en ce que l'un au moins des embouts (50) de tube formant les bords transversaux (74) du .boîtier de raccordement est tel que défini dans la revendication 6.15. Heat exchanger according to claim 14, characterized in that at least one of the end pieces (50) of the tube forming the transverse edges (74) of the connection box is as defined in claim 6.
16. Echangeur de chaleur selon l'une des revendications 13 à 15, caractérisé en ce qu'il comprend en outre un élément de tubulure (90) présentant au voisinage d'une extrémité une portion de section rectangulaire (96) de dimensions choisies pour se loger entre les bords longitudinaux (70; 72) et transversaux- (74) du boîtier de raccordement (78) . 16. Heat exchanger according to one of claims 13 to 15, characterized in that it further comprises a tubing element (90) having, in the vicinity of one end, a portion of rectangular section (96) of dimensions chosen for fit between the longitudinal (70; 72) and transverse (74) edges of the connection box (78).
17. Echangeur de chaleur selon l'une des revendication 13 à 16, caractérisé en ce que l'élément de tubulure (90) comprend un épaulement de dimensions choisies pour s'appuyer sur les bords , longitudinaux (70; 72) et trans- versaux (74) du boîtier de raccordement (78) .17. Heat exchanger according to one of claims 13 to 16, characterized in that the tube element (90) comprises a shoulder of dimensions chosen to bear on the edges, longitudinal (70; 72) and trans- connections (74) of the connection box (78).
18. Echangeur de chaleur selon l'une des revendications 13 à 16, caractérisé en ce qu'il comprend en outre un organe adaptateur (100; 110) présentant une partie de section rectangulaire (96) apte à se loger entre les bords longitudinaux (70; 72) et transversaux (74) du boîtier de raccordement (78) .18. Heat exchanger according to one of claims 13 to 16, characterized in that it further comprises an adapter member (100; 110) having a part of rectangular section (96) capable of being housed between the longitudinal edges ( 70; 72) and transverse (74) of the connection box (78).
19. Echangeur de chaleur selon la revendication 18, caractérisé en ce que la partie de section rectangulaire19. Heat exchanger according to claim 18, characterized in that the part of rectangular section
(96) se prolonge par un épaulement de dimensions choisies pour venir en appui sur les bords longitudinaux (70,-72) et transversaux (74) du boîtier de raccordement (78) .(96) is extended by a shoulder of dimensions chosen to come to bear on the longitudinal (70, -72) and transverse (74) edges of the connection box (78).
20. Echangeur de chaleur selon l'une des revendications 18 et 19, caractérisé en ce que l'organe adaptateur (110) comprend en outre une face de liaison avec un organe électrique (116) par exemple une électrovanne. 20. Heat exchanger according to one of claims 18 and 19, characterized in that the adapter member (110) further comprises a connecting face with an electrical member (116) for example a solenoid valve.
PCT/FR2005/001057 2004-05-13 2005-04-28 Tube end piece for hydraulic circuit element, in particular for heat exchanger WO2005121678A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0405191A FR2870330B1 (en) 2004-05-13 2004-05-13 TUBE BIT FOR HYDRAULIC CIRCUIT ELEMENT, ESPECIALLY FOR HEAT EXCHANGER
FR0405191 2004-05-13

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WO2005121678A1 true WO2005121678A1 (en) 2005-12-22

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FR (1) FR2870330B1 (en)
WO (1) WO2005121678A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011039563A1 (en) * 2009-09-29 2011-04-07 K. Nissen International A/S A heat exchanger

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2563899A1 (en) * 1984-05-04 1985-11-08 Piemontese Radiatori Vehicle oil cooler with flat connecting tubes
EP0324226A1 (en) * 1988-01-12 1989-07-19 Thermag Industries Inc Heat exchanger with individual headers
EP0756149A1 (en) * 1995-07-25 1997-01-29 Valeo Thermique Habitacle Heat exchanger with a stacked header box
US6196304B1 (en) * 1996-08-31 2001-03-06 Behr Gmbh & Co. Tube-block-type heat transfer device and method of making same
FR2813663A1 (en) * 2000-09-04 2002-03-08 Didier Costes Heat exchanger plate for radiator has a cellular channel panel with a manifold at one end for connecting the channels
FR2834336A1 (en) * 2001-12-28 2003-07-04 Valeo Thermique Moteur Sa CIRCUIT ELEMENT FOR A HEAT EXCHANGER, ESPECIALLY A MOTOR VEHICLE AND A HEAT EXCHANGER THUS OBTAINED

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2563899A1 (en) * 1984-05-04 1985-11-08 Piemontese Radiatori Vehicle oil cooler with flat connecting tubes
EP0324226A1 (en) * 1988-01-12 1989-07-19 Thermag Industries Inc Heat exchanger with individual headers
EP0756149A1 (en) * 1995-07-25 1997-01-29 Valeo Thermique Habitacle Heat exchanger with a stacked header box
US6196304B1 (en) * 1996-08-31 2001-03-06 Behr Gmbh & Co. Tube-block-type heat transfer device and method of making same
FR2813663A1 (en) * 2000-09-04 2002-03-08 Didier Costes Heat exchanger plate for radiator has a cellular channel panel with a manifold at one end for connecting the channels
FR2834336A1 (en) * 2001-12-28 2003-07-04 Valeo Thermique Moteur Sa CIRCUIT ELEMENT FOR A HEAT EXCHANGER, ESPECIALLY A MOTOR VEHICLE AND A HEAT EXCHANGER THUS OBTAINED

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FR2870330A1 (en) 2005-11-18
FR2870330B1 (en) 2006-08-18

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