EP0664428A1 - Heat exchanger tube, process for making same and heat exchanger provided with such tubes - Google Patents

Heat exchanger tube, process for making same and heat exchanger provided with such tubes Download PDF

Info

Publication number
EP0664428A1
EP0664428A1 EP95100616A EP95100616A EP0664428A1 EP 0664428 A1 EP0664428 A1 EP 0664428A1 EP 95100616 A EP95100616 A EP 95100616A EP 95100616 A EP95100616 A EP 95100616A EP 0664428 A1 EP0664428 A1 EP 0664428A1
Authority
EP
European Patent Office
Prior art keywords
tube
jaw
heat exchanger
faces
section
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
EP95100616A
Other languages
German (de)
French (fr)
Inventor
Philippe Le Gauyer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Valeo Thermique Moteur SA
Original Assignee
Valeo Thermique Moteur SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Valeo Thermique Moteur SA filed Critical Valeo Thermique Moteur SA
Publication of EP0664428A1 publication Critical patent/EP0664428A1/en
Ceased legal-status Critical Current

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
    • F28D1/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
    • F28D1/04—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits
    • F28D1/053—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being straight
    • F28D1/0535—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
    • F28D1/05366—Assemblies of conduits connected to common headers, e.g. core type radiators
    • F28D1/05383—Assemblies of conduits connected to common headers, e.g. core type radiators with multiple rows of conduits or with multi-channel conduits
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D41/00—Application of procedures in order to alter the diameter of tube ends
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F1/00—Tubular elements; Assemblies of tubular elements
    • F28F1/02—Tubular elements of cross-section which is non-circular
    • F28F1/025—Tubular elements of cross-section which is non-circular with variable shape, e.g. with modified tube ends, with different geometrical features

Definitions

  • the invention relates to a heat exchanger tube, in particular for a motor vehicle, a method for its conformation and a heat exchanger comprising such tubes.
  • a heat exchanger tube comprising a body of oblong section delimited by two large faces and by two small faces, one end of oblong section delimited by two large faces and by two small faces, a transition part connecting the body and the end, the body section having a length and a width respectively greater and less than the length and the width of the section of the end.
  • the large faces of the body and the end can be flat or slightly curved, while the small faces of the body and those of the end are generally semi-circular or else flat, in which case this small flat face is connected by two rounds of small radius of curvature with the two large faces.
  • These tubes are arranged in a conventional manner to form a bundle provided with fins and intended to be swept by an air flow.
  • the oblong shape of the body facilitates the passage of air and reduces pressure losses compared to conventional round tube heat exchangers.
  • the ends of the tubes have a less oblong cross-section than that of the body to facilitate mounting of the tube ends on a collecting plate, or "plate with holes", crossed by these ends.
  • the tubes can be arranged in pairs and in two rows, the ends of the tubes of the same pair being received in the same hole of the collector plate.
  • One of the problems posed by the production of the tubes of the type defined above, is that of their conformation, in particular as regards the transition part.
  • transition part is as short as possible, in the axial direction of the tube, since the fins of the heat exchanger are located only at the body of the tubes.
  • the object of the invention is in particular to propose a heat exchanger tube of the aforementioned type which can be produced with a shaping device of simple structure and which makes it possible to minimize the length of the transition part, in the axial direction of the tube. .
  • the invention proposes for this purpose a heat exchanger tube of the type defined in the introduction, in which the transition part comprises two inclined faces connecting the large faces of the body and the large faces of the end and at least one curved face. connecting a small face of the body and a small end face, on the one hand, and the large faces of the body, on the other hand.
  • this transition part is particularly short and it can also be produced with relatively simple tools.
  • the two large faces of the body, the two large faces of the end and the two inclined faces of the transition part are all planar faces.
  • the two inclined faces of the transition part form an angle of 30 ° relative to the axis of the tube.
  • the tube has a single curved face connecting a small face of the body and a small face of the end, while the other small face of the body and the other small face of the end have at least one common generator.
  • This structure facilitates an arrangement of the tubes in pairs, in which the two tubes of the same pair are joined by the aforementioned generators.
  • the curved face of the transition part substantially takes the form of a section of torus whose diameter corresponds substantially to the width of the section of the tube body.
  • the curved face in the shape of a torus has one end which is connected in the extension of a small face of the body and another end which is connected obliquely with a small face of the end.
  • the curved face connects to the small face of the end, at a level where the body section takes the form of the end section.
  • At least one of the two jaws has a sudden detachment between a part serving for the shaping of the end and a part serving for the shaping of the transition part, in order to produce the curved face .
  • the invention in another aspect, relates to a heat exchanger comprising a multiplicity of tubes of the aforementioned type, the ends of which are received in holes in a collector plate.
  • the tubes are arranged in pairs in two rows, the tubes of the same pair being joined and their respective ends being received in the same hole of the collector plate.
  • Figure 1 shows a tube 10 for a heat exchanger, in particular of a motor vehicle, comprising a body 12 (shown partially) of oblong section, one end 14 of oblong section and a part of transition 16 connecting the body 12 and the end 14.
  • the body 12 has an oblong section S1 (FIG. 2), and is delimited by two large flat faces 18 and by two small rounded faces 20, of substantially semi-circular shape.
  • the end 14 has an oblong section S2 and is delimited by two large flat faces 22 and by two small rounded faces 24 of substantially semi-circular shape.
  • the section S1 of the body 12 has a length (delimited between the two faces 20) and a width (delimited between the two faces 18) which are respectively greater and less than the length (delimited between the faces 24) and the width (delimited between the faces 22) of the section S2 of the end 14.
  • the end 14 has a less oblong shape than the body 12, the perimeter of the end 14 being equal to or slightly greater than that of the body 12.
  • the small face 20 and the small face 24 situated on the left side of FIG. 1 have a common generator G, while the small face 20 and the small face 24 situated on the right side of the figure are offset.
  • the transition portion 16 comprises two inclined plane faces 26 which each connect a large face 18 to a large face 22.
  • the two inclined faces 26 advantageously form an angle of 30 ° relative to the axis of the tube, that is to say a say with respect to the plane of the faces 18 and 22.
  • transition part 16 comprises a curved face 28 connecting the small face 20 of the body and the small end face 24, which are both located on the right side of FIG. 1.
  • the curved face 28 further connects the two large faces 18 of the body 12.
  • the curved face 28 has the shape of a torus section having an end 30 which is connected in the extension of the small face 20 and an end 32 which is connected obliquely with the small face 32 of the end 14.
  • the curved face 28 is connected to the small face 24 at a level where the section of the body takes the shape of the section of the end, which makes it possible to preserve the equality of the perimeters of the tube at the level of the body and from the end.
  • the tube retains the cylindrical shape of the end 14.
  • the tube 10 is advantageously made of a metal or metal alloy, for example aluminum, having good heat exchange properties and can be worked easily.
  • the two tubes 10 of the same pair are joined by their respective generatrices G (FIG. 2).
  • G generatrices G
  • the center distance A of the bodies of the two tubes is greater than the center distance A ′ of the ends of the two tubes.
  • the ends of the tubes are received in a collecting plate 42 through which a multiplicity of holes 44 of oblong shape are formed, each receiving the ends 14 of the two tubes of the same pair.
  • the collector plate 42 having as many holes 44 as pairs of tubes.
  • the collector plate 42 has a generally rectangular shape bordered by a folded edge 46 forming a peripheral groove in which a seal 48 is placed.
  • the exchanger 40 further comprises a water box wall 50 comprising an open face of generally rectangular shape limited by a flange 52 capable of being introduced into the groove of the collecting plate 20 by compressing the bead 48, under the action of clamping lugs 54 of the collector plate.
  • the heat exchanger 40 further comprises intermediate fins 56 disposed between the pairs of tubes 10. These fins are inserted between the bodies 12 of the tubes up to their transition part 16, that is to say up to the base of the inclined faces 26.
  • the zone of the tubes which is devoid of fins is minimal, which makes it possible to optimize the thermal performance of the heat exchanger for a given length of the tubes.
  • the tubes 10 are brazed to the header plate 22, as shown by a solder joint 58.
  • the fins 56 are brazed to the tubes.
  • FIGS. 4 to 9 show a device 60 for shaping a tube as described above.
  • the device 60 comprises a first jaw 62 having an open internal cavity 64 having an internal shape homologous to that of half of the external shape of the body and of the end of the tube, in the region of one of the small faces of the body (in the example, the one located on the side of the common generator G).
  • the device 60 further comprises a second jaw 66 having an open internal cavity 68 having an internal shape homologous to that of another half of the external shape of the body and of the end of the tube, in the region of another small face of the body (in the example, where the curved part 28 must be formed).
  • the internal cavity 64 of the jaw 62 has three main parts 70, 72 and 74 respectively serving to shape the end, the transition part and the body.
  • the internal cavity 68 comprises three successive parts 76, 78 and 80 respectively serving to shape the end, the transition part and the body of the tube.
  • the cavity 68 includes a sudden step 82 between the parts 76 and 80, this step making it possible to form the curved part 28.
  • the jaws 62 and 66 can be moved towards or away from each other in a direction D which extends transversely to the axis of the tube.
  • Means are provided for bringing the two jaws towards one another along a first movement stroke in direction D to grip the tube, as shown in FIGS. 4 and 5, without starting the deformation of the end.
  • a punch 84 is used, as shown in FIG. 7, comprising an end 86 corresponding to the internal shape of the body (but with a shorter section length), an intermediate part 88 corresponding to the shape of the transition part and an opposite part 90 corresponding to the internal shape of the end of the tube.
  • the punch 84 is completely inserted into the end of the tube, which ensures the conformation of the end 16 and of the transition part 14.
  • the device 60 allows the tube to be shaped under precise and rapid conditions suitable for high speed production lines.
  • the tube is formed in principle on its two ends to then allow the mounting of such tubes between the two water boxes of a heat exchanger.
  • heat exchanger tubes comprising two curved faces 28, instead of a single curved face, as shown previously in FIG. 1.
  • the tube of the invention is very particularly suitable for heat exchangers, in particular for motor vehicle cooling radiators.

Abstract

The tube consists of a body (12) of elongated cross-section, with two long faces (18) and two short ones (24). The end (14) is also of elongated cross-section, but with different dimensions, having two long sides (22) and two short ones, and a transitional section (16). The transitional section of the tube has two sloping surfaces (26) which connect the longer faces of the body and end of the tube, and at least one curved face (28) joining their shorter surfaces. The long surfaces of the body and end and the inclined surfaces connecting them are all flat, with the transitional section surfaces set at an angle of 30 degrees to the axis of the tube.

Description

L´invention concerne un tube d'échangeur de chaleur, en particulier pour véhicule automobile, un procédé pour sa conformation et un échangeur de chaleur comprenant de tels tubes.The invention relates to a heat exchanger tube, in particular for a motor vehicle, a method for its conformation and a heat exchanger comprising such tubes.

On connaît déjà, en particulier d'après le Brevet français 91 03412, au nom de la Demanderesse, un tube d'échangeur de chaleur comprenant un corps de section oblongue délimité par deux grandes faces et par deux petites faces, une extrémité de section oblongue délimitée par deux grandes faces et par deux petites faces, une partie de transition reliant le corps et l'extrémité, la section du corps ayant une longueur et une largeur respectivement supérieure et inférieure à la longueur et à la largeur de la section de l'extrémité.Already known, in particular from French Patent 91 03412, in the name of the Applicant, a heat exchanger tube comprising a body of oblong section delimited by two large faces and by two small faces, one end of oblong section delimited by two large faces and by two small faces, a transition part connecting the body and the end, the body section having a length and a width respectively greater and less than the length and the width of the section of the end.

Dans les tubes de ce type, les grandes faces du corps et de l'extrémité peuvent être planes ou légèrement incurvées, tandis que les petites faces du corps et celles de l'extrémité sont généralement semi-circulaires ou bien planes, auquel cas cette petite face plane se raccorde par deux arrondis de faible rayon de courbure avec les deux grandes faces.In tubes of this type, the large faces of the body and the end can be flat or slightly curved, while the small faces of the body and those of the end are generally semi-circular or else flat, in which case this small flat face is connected by two rounds of small radius of curvature with the two large faces.

Ces tubes sont agencés de manière classique pour former un faisceau muni d'ailettes et destiné à être balayé par un flux d'air. La forme oblongue du corps facilite le passage de l'air et diminue les pertes de charge, comparativement aux échangeurs de chaleur à tubes ronds classiques.These tubes are arranged in a conventional manner to form a bundle provided with fins and intended to be swept by an air flow. The oblong shape of the body facilitates the passage of air and reduces pressure losses compared to conventional round tube heat exchangers.

Les extrémités des tubes ont une section de forme moins oblongue que celle du corps pour faciliter le montage des extrémités de tubes sur une plaque collectrice, ou "plaque à trous", traversée par ces extrémités.The ends of the tubes have a less oblong cross-section than that of the body to facilitate mounting of the tube ends on a collecting plate, or "plate with holes", crossed by these ends.

Dans l'échangeur de chaleur du Brevet français précité, les tubes peuvent être disposés par paires et suivant deux rangées, les extrémités des tubes d'une même paire étant reçues dans un même trou de la plaque collectrice.In the heat exchanger of the aforementioned French patent, the tubes can be arranged in pairs and in two rows, the ends of the tubes of the same pair being received in the same hole of the collector plate.

Cet agencement particulier permet d'obtenir une configuration plus compacte de l'échangeur de chaleur, notamment dans le sens de la largeur, puisque les tubes se trouvent accolés par paires au lieu d'être séparés les uns des autres, comme dans les réalisations antérieures.This particular arrangement makes it possible to obtain a more compact configuration of the heat exchanger, in particular in the width direction, since the tubes are joined in pairs instead of being separated from each other, as in the previous embodiments .

Un des problèmes posés par la réalisation des tubes du type défini précédemment, est celui de leur conformation, notamment en ce qui concerne la partie de transition.One of the problems posed by the production of the tubes of the type defined above, is that of their conformation, in particular as regards the transition part.

Il est important que ces tubes puissent être réalisés avec un dispositif de conformation aussi simple que possible, autorisant des fabrications industrielles à grande échelle.It is important that these tubes can be produced with as simple a shaping device as possible, allowing large-scale industrial manufacturing.

Il est essentiel également que la partie de transition soit la plus courte possible, dans le sens axial du tube, du fait que les ailettes de l'échangeur de chaleur se trouvent seulement au niveau du corps des tubes.It is also essential that the transition part is as short as possible, in the axial direction of the tube, since the fins of the heat exchanger are located only at the body of the tubes.

L'invention a notamment pour but de proposer un tube d'échangeur de chaleur du type précité qui peut être réalisé avec un dispositif de conformation de structure simple et qui permet de minimiser la longueur de la partie de transition, dans le sens axial du tube.The object of the invention is in particular to propose a heat exchanger tube of the aforementioned type which can be produced with a shaping device of simple structure and which makes it possible to minimize the length of the transition part, in the axial direction of the tube. .

L'invention propose à cet effet un tube d'échangeur de chaleur du type défini en introduction, dans lequel la partie de transition comprend deux faces inclinées reliant les grandes faces du corps et les grandes faces de l'extrémité et au moins une face incurvée reliant une petite face du corps et une petite face d'extrémité, d'une part, et les grandes faces du corps, d'autre part.The invention proposes for this purpose a heat exchanger tube of the type defined in the introduction, in which the transition part comprises two inclined faces connecting the large faces of the body and the large faces of the end and at least one curved face. connecting a small face of the body and a small end face, on the one hand, and the large faces of the body, on the other hand.

Il en résulte que la longueur axiale de cette partie de transition est particulièrement courte et qu'elle peut être en outre réalisée avec un outillage relativement simple.As a result, the axial length of this transition part is particularly short and it can also be produced with relatively simple tools.

Dans une forme de réalisation préférée de l'invention, les deux grandes faces du corps, les deux grandes faces de l'extrémité et les deux faces inclinées de la partie de transition sont toutes des faces planes.In a preferred embodiment of the invention, the two large faces of the body, the two large faces of the end and the two inclined faces of the transition part are all planar faces.

De façon avantageuse, les deux faces inclinées de la partie de transition forment un angle de 30° par rapport à l'axe du tube.Advantageously, the two inclined faces of the transition part form an angle of 30 ° relative to the axis of the tube.

Dans une forme de réalisation préférée de l'invention, le tube comporte une seule face incurvée reliant une petite face du corps et une petite face de l'extrémité, tandis que l'autre petite face du corps et l'autre petite face de l'extrémité ont au moins une génératrice commune.In a preferred embodiment of the invention, the tube has a single curved face connecting a small face of the body and a small face of the end, while the other small face of the body and the other small face of the end have at least one common generator.

Cette structure facilite un agencement des tubes par paires, dans lequel les deux tubes d'une même paire sont accolés par les génératrices précitées.This structure facilitates an arrangement of the tubes in pairs, in which the two tubes of the same pair are joined by the aforementioned generators.

De façon avantageuse, la face Incurvée de la partie de transition affecte sensiblement la forme d'un tronçon de tore dont le diamètre correspond sensiblement à la largeur de la section du corps de tube.Advantageously, the curved face of the transition part substantially takes the form of a section of torus whose diameter corresponds substantially to the width of the section of the tube body.

Selon une autre caractéristique de l'invention, la face incurvée en forme de tore possède une extrémité qui se raccorde dans le prolongement d'une petite face du corps et une autre extrémité qui se raccorde obliquement avec une petite face de l'extrémité.According to another characteristic of the invention, the curved face in the shape of a torus has one end which is connected in the extension of a small face of the body and another end which is connected obliquely with a small face of the end.

En ce cas, la face incurvée se raccorde à la petite face de l'extrémité, à un niveau où la section du corps prend la forme de la section d'extrémité.In this case, the curved face connects to the small face of the end, at a level where the body section takes the form of the end section.

Sous un autre aspect, l'invention concerne un dispositif de conformation de l'extrémité d'un tube d'échangeur de chaleur, du type précité, ce dispositif comprenant :

  • une première mâchoire présentant une cavité interne ouverte ayant une forme interne homologue de celle d'une moitié de la forme externe du corps et de l'extrémité du tube, dans la région d'une des petites faces du corps,
  • une seconde mâchoire présentant une cavité interne ouverte ayant une forme interne homologue de celle d'une autre moitié de la forme externe du corps et de l'extrémité du tube, dans la région d'une autre petite face du corps,
  • et un poinçon déplaçable en translation axiale dans le tube maintenu entre la première mâchoire et la seconde mâchoire rapprochées.
In another aspect, the invention relates to a device for shaping the end of a heat exchanger tube, of the aforementioned type, this device comprising:
  • a first jaw having an open internal cavity having an internal shape homologous to that of half of the external shape of the body and of the end of the tube, in the region of one of the small faces of the body,
  • a second jaw having an open internal cavity having an internal shape homologous to that of another half of the external shape of the body and of the end of the tube, in the region of another small face of the body,
  • and a punch movable in axial translation in the tube held between the first jaw and the second jaw close together.

Selon une autre particularité de l'invention, l'une au moins des deux mâchoires comporte un décrochement brusque entre une partie servant à la conformation de l'extrémité et une partie servant à la conformation de la partie de transition, pour réaliser la face incurvée.According to another feature of the invention, at least one of the two jaws has a sudden detachment between a part serving for the shaping of the end and a part serving for the shaping of the transition part, in order to produce the curved face .

Selon une autre caractéristique de l'invention, le dispositif de conformation comprend des moyens propres à :

  • rapprocher l'une vers l'autre la première mâchoire et la seconde mâchoire, suivant une première course de déplacement, dans une direction transversale à l'axe du tube pour enserrer le tube sans le déformer,
  • rapprocher davantage la première mâchoire et la seconde mâchoire suivant une seconde course de déplacement dans la direction transversale pour amorcer la déformation de l'extrémité du tube,
  • introduire le poinçon dans l'extrémité du tube partiellement déformé, maintenu entre la première mâchoire et la seconde mâchoire,
  • rapprocher complètement la première mâchoire et la seconde mâchoire suivant une troisième course de déplacement dans la direction transversale, le poinçon restant en place,
  • retirer le poinçon du tube, et
  • écarter la première et la seconde mâchoire.
According to another characteristic of the invention, the shaping device comprises means specific to:
  • bringing the first jaw and the second jaw towards each other, in a first displacement stroke, in a direction transverse to the axis of the tube to grip the tube without deforming it,
  • bring the first jaw and the second jaw closer together following a second movement in the transverse direction to initiate the deformation of the end of the tube,
  • insert the punch into the end of the partially deformed tube, held between the first jaw and the second jaw,
  • completely bring the first jaw and the second jaw closer together in a third movement in the transverse direction, the punch remaining in place,
  • remove the punch from the tube, and
  • spread the first and second jaws.

Sous un autre aspect, l'invention concerne un échangeur de chaleur comprenant une multiplicité de tubes du type précité, dont les extrémités sont reçues dans des trous d'une plaque collectrice.In another aspect, the invention relates to a heat exchanger comprising a multiplicity of tubes of the aforementioned type, the ends of which are received in holes in a collector plate.

Avantageusement, les tubes sont disposés par paires suivant deux rangées, les tubes d'une même paire étant accolés et leurs extrémités respectives étant reçues dans un même trou de la plaque collectrice.Advantageously, the tubes are arranged in pairs in two rows, the tubes of the same pair being joined and their respective ends being received in the same hole of the collector plate.

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

  • la figure 1 est une vue partielle en perspective d'un tube d'échangeur de chaleur selon l'invention;
  • la figure 2 est une vue partielle en coupe transversale d'un échangeur de chaleur muni de tubes analogues à celui de la figure 1;
  • la figure 3 est une vue partielle en coupe selon la ligne III-III de la figure 2;
  • la figure 4 est une vue de dessus des deux mâchoires d'un dispositif de conformation selon l'invention dans une première position des mâchoires;
  • la figure 5 est une vue en coupe suivant la ligne V-V de la figure 4;
  • la figure 6 est une vue analogue à celle de la figure 4 dans une autre position des mâchoires;
  • la figure 7 est une vue en coupe suivant la ligne VII-VII de la figure 6, le poinçon ayant été introduit dans l'extrémité du tube;
  • la figure 8 est une vue analogue à celle de la figure 6 en position de rapprochement complète des mâchoires; et
  • la figure 9 est une vue en coupe suivant la ligne IX-IX de la figure 8.
In the description which follows, given solely by way of example, reference is made to the appended drawings, in which:
  • Figure 1 is a partial perspective view of a heat exchanger tube according to the invention;
  • Figure 2 is a partial cross-sectional view of a heat exchanger provided with tubes similar to that of Figure 1;
  • Figure 3 is a partial sectional view along line III-III of Figure 2;
  • Figure 4 is a top view of the two jaws of a shaping device according to the invention in a first position of the jaws;
  • Figure 5 is a sectional view along line VV of Figure 4;
  • Figure 6 is a view similar to that of Figure 4 in another position of the jaws;
  • Figure 7 is a sectional view along line VII-VII of Figure 6, the punch having been introduced into the end of the tube;
  • Figure 8 is a view similar to that of Figure 6 in the position of complete approximation of the jaws; and
  • FIG. 9 is a sectional view along line IX-IX of FIG. 8.

On se réfère tout d'abord à la figure 1 qui représente un tube 10 pour un échangeur de chaleur, en particulier de véhicule automobile, comprenant un corps 12 (représenté partiellement) de section oblongue, une extrémité 14 de section oblongue et une partie de transition 16 reliant le corps 12 et l'extrémité 14.Referring firstly to Figure 1 which shows a tube 10 for a heat exchanger, in particular of a motor vehicle, comprising a body 12 (shown partially) of oblong section, one end 14 of oblong section and a part of transition 16 connecting the body 12 and the end 14.

Le corps 12 présente une section oblongue S1 (figure 2), et est délimité par deux grandes faces planes 18 et par deux petites faces arrondies 20, de forme sensiblement semi-circulaire.The body 12 has an oblong section S1 (FIG. 2), and is delimited by two large flat faces 18 and by two small rounded faces 20, of substantially semi-circular shape.

L'extrémité 14 présente une section oblongue S2 et est délimitée par deux grandes faces planes 22 et par deux petites faces arrondies 24 de forme sensiblement semi-circulaire.The end 14 has an oblong section S2 and is delimited by two large flat faces 22 and by two small rounded faces 24 of substantially semi-circular shape.

Comme on peut le voir sur la figure 1, la section S1 du corps 12 a une longueur (délimitée entre les deux faces 20) et une largeur (délimitée entre les deux faces 18) qui sont respectivement supérieure et inférieure à la longueur (délimitée entre les faces 24) et la largeur (délimitée entre les faces 22) de la section S2 de l'extrémité 14.As can be seen in FIG. 1, the section S1 of the body 12 has a length (delimited between the two faces 20) and a width (delimited between the two faces 18) which are respectively greater and less than the length (delimited between the faces 24) and the width (delimited between the faces 22) of the section S2 of the end 14.

Il en résulte que l'extrémité 14 a une forme moins oblongue que le corps 12, le périmètre de l'extrémité 14 étant égal ou légèrement supérieur à celui du corps 12.As a result, the end 14 has a less oblong shape than the body 12, the perimeter of the end 14 being equal to or slightly greater than that of the body 12.

La petite face 20 et la petite face 24 situées du côté gauche de la figure 1 présentent une génératrice commune G, tandis que la petite face 20 et la petite face 24 situées du côté droit de la figure sont décalées.The small face 20 and the small face 24 situated on the left side of FIG. 1 have a common generator G, while the small face 20 and the small face 24 situated on the right side of the figure are offset.

La partie de transition 16 comprend deux faces planes inclinées 26 qui relient chacune une grande face 18 à une grande face 22. Les deux faces inclinées 26 forment avantageusement un angle de 30° par rapport à l'axe du tube, c'est-a-dire par rapport au plan des faces 18 et 22.The transition portion 16 comprises two inclined plane faces 26 which each connect a large face 18 to a large face 22. The two inclined faces 26 advantageously form an angle of 30 ° relative to the axis of the tube, that is to say a say with respect to the plane of the faces 18 and 22.

En outre, la partie de transition 16 comprend une face incurvée 28 reliant la petite face 20 du corps et la petite face 24 d'extrémité, qui sont toutes deux situées du côté droit de la figure 1. La face incurvée 28 relie en outre les deux grandes faces 18 du corps 12.In addition, the transition part 16 comprises a curved face 28 connecting the small face 20 of the body and the small end face 24, which are both located on the right side of FIG. 1. The curved face 28 further connects the two large faces 18 of the body 12.

Dans l'exemple représenté, la face incurvée 28 a la forme d'un tronçon de tore possédant une extrémité 30 qui se raccorde dans le prolongement de la petite face 20 et une extrémité 32 qui se raccorde obliquement avec la petite face 32 de l'extrémité 14.In the example shown, the curved face 28 has the shape of a torus section having an end 30 which is connected in the extension of the small face 20 and an end 32 which is connected obliquely with the small face 32 of the end 14.

On comprend que la face incurvée 28 se raccorde à la petite face 24 à un niveau où la section du corps prend la forme de la section de l'extrémité, ce qui permet de conserver l'égalité des périmètres du tube au niveau du corps et de l'extrémité.It is understood that the curved face 28 is connected to the small face 24 at a level where the section of the body takes the shape of the section of the end, which makes it possible to preserve the equality of the perimeters of the tube at the level of the body and from the end.

Il est à remarquer que, dans les régions 34 comprises entre les deux faces inclinées 26 et la partie incurvée 28, le tube conserve la forme cylindrique de l'extrémité 14.It should be noted that, in the regions 34 lying between the two inclined faces 26 and the curved part 28, the tube retains the cylindrical shape of the end 14.

Le tube 10 est avantageusement réalisé en un métal ou alliage métallique, par exemple de l'aluminium, possédant de bonnes propriétés d'échange thermique et pouvant être travaillé facilement.The tube 10 is advantageously made of a metal or metal alloy, for example aluminum, having good heat exchange properties and can be worked easily.

On se réfère maintenant aux figures 2 et 3 qui représentent un échangeur de chaleur 40 comprend deux rangées R de tubes 10 disposées par paires. Les deux tubes 10 d'une même paire sont accolés par leurs génératrices respectives G (figure 2). Il en résulte que l'entraxe A des corps des deux tubes est supérieur à l'entraxe A'des extrémités des deux tubes.Referring now to Figures 2 and 3 which show a heat exchanger 40 comprises two rows R of tubes 10 arranged in pairs. The two tubes 10 of the same pair are joined by their respective generatrices G (FIG. 2). As a result, the center distance A of the bodies of the two tubes is greater than the center distance A ′ of the ends of the two tubes.

Les extrémités des tubes sont reçues dans une plaque collectrice 42 au travers de laquelle sont formés une multiplicité de trous 44 de forme oblongue, recevant chacun les extrémités 14 des deux tubes d'une même paire. La plaque collectrice 42 comportant autant de trous 44 que de paires de tubes.The ends of the tubes are received in a collecting plate 42 through which a multiplicity of holes 44 of oblong shape are formed, each receiving the ends 14 of the two tubes of the same pair. The collector plate 42 having as many holes 44 as pairs of tubes.

La plaque collectrice 42 possède une forme générale rectangulaire bordée par un bord replié 46 formant gorge périphérique dans laquelle est placé un joint d'étanchéité 48.The collector plate 42 has a generally rectangular shape bordered by a folded edge 46 forming a peripheral groove in which a seal 48 is placed.

L'échangeur 40 comprend en outre une paroi de boîte à eau 50 comportant une face ouverte de forme générale rectangulaire limitée par un rebord 52 susceptible d'être introduit dans la gorge de la plaque collectrice 20 en comprimant le bourrelet 48, sous l'action de pattes de serrage 54 de la plaque collectrice.The exchanger 40 further comprises a water box wall 50 comprising an open face of generally rectangular shape limited by a flange 52 capable of being introduced into the groove of the collecting plate 20 by compressing the bead 48, under the action of clamping lugs 54 of the collector plate.

L'échangeur de chaleur 40 comprend en outre des ailettes intercalaires 56 disposées entre les paires de tubes 10. Ces ailettes sont insérées entre les corps 12 des tubes jusqu'à leur partie de transition 16, c'est-à-dire jusqu'à la base des faces inclinées 26.The heat exchanger 40 further comprises intermediate fins 56 disposed between the pairs of tubes 10. These fins are inserted between the bodies 12 of the tubes up to their transition part 16, that is to say up to the base of the inclined faces 26.

Du fait que la longueur axiale des parties de transition 14 est particulièrement faible, la zone des tubes qui est dépourvue d'ailettes est minimale, ce qui permet d'optimiser les performances thermiques de l'échangeur de chaleur pour une longueur donnée des tubes.Because the axial length of the transition parts 14 is particularly small, the zone of the tubes which is devoid of fins is minimal, which makes it possible to optimize the thermal performance of the heat exchanger for a given length of the tubes.

Dans la forme de réalisation des figures 2 et 3, les tubes 10 sont brasés à la plaque collectrice 22, comme montré par un joint de brasure 58. De même, les ailettes 56 sont brasées aux tubes.In the embodiment of Figures 2 and 3, the tubes 10 are brazed to the header plate 22, as shown by a solder joint 58. Likewise, the fins 56 are brazed to the tubes.

On se réfère maintenant aux figures 4 à 9 qui montrent un dispositif 60 de conformation d'un tube tel que décrit précédemment.Reference is now made to FIGS. 4 to 9 which show a device 60 for shaping a tube as described above.

Le dispositif 60 comprend une première mâchoire 62 présentant une cavité interne ouverte 64 ayant une forme interne homologue de celle d'une moitié de la forme externe du corps et de l'extrémité du tube, dans la région d'une des petites faces du corps (dans l'exemple, celle située du côté de la génératrice commune G).The device 60 comprises a first jaw 62 having an open internal cavity 64 having an internal shape homologous to that of half of the external shape of the body and of the end of the tube, in the region of one of the small faces of the body (in the example, the one located on the side of the common generator G).

Le dispositif 60 comprend en outre une seconde mâchoire 66 présentant une cavité interne ouverte 68 ayant une forme interne homologue de celle d'une autre moitié de la forme externe du corps et de l'extrémité du tube, dans la région d'une autre petite face du corps (dans l'exemple, celle où doit être formée la partie incurvée 28).The device 60 further comprises a second jaw 66 having an open internal cavity 68 having an internal shape homologous to that of another half of the external shape of the body and of the end of the tube, in the region of another small face of the body (in the example, where the curved part 28 must be formed).

La cavité interne 64 de la mâchoire 62 comporte trois parties principales 70, 72 et 74 servant respectivement à la conformation de l'extrémité, de la partie de transition et du corps.The internal cavity 64 of the jaw 62 has three main parts 70, 72 and 74 respectively serving to shape the end, the transition part and the body.

De façon correspondante, la cavité interne 68 comprend trois parties successives 76, 78 et 80 servant respectivement à la conformation de l'extrémité, de la partie de transition et du corps du tube.Correspondingly, the internal cavity 68 comprises three successive parts 76, 78 and 80 respectively serving to shape the end, the transition part and the body of the tube.

Selon une particularité de l'invention, la cavité 68 comporte un décrochement brusque 82 entre les parties 76 et 80, ce décrochement permettant de former la partie incurvée 28.According to a feature of the invention, the cavity 68 includes a sudden step 82 between the parts 76 and 80, this step making it possible to form the curved part 28.

Les mâchoires 62 et 66 peuvent être rapprochées ou éloignées l'une de l'autre dans une direction D qui s'étend transversalement à l'axe du tube.The jaws 62 and 66 can be moved towards or away from each other in a direction D which extends transversely to the axis of the tube.

Des moyens sont prévus pour rapprocher l'une vers l'autre les deux mâchoires suivant une première course de déplacement dans la direction D pour enserrer le tube, comme montré aux figures 4 et 5, sans commencer la déformation de l'extrémité.Means are provided for bringing the two jaws towards one another along a first movement stroke in direction D to grip the tube, as shown in FIGS. 4 and 5, without starting the deformation of the end.

Ensuite, les deux mâchoires sont rapprochées davantage pour arriver à la position représentée dans la figure 6 où la déformation de l'extrémité est amorcée.Then, the two jaws are brought closer together to arrive at the position shown in Figure 6 where the deformation of the end is initiated.

Ensuite, on utilise un poinçon 84, comme montré à la figure 7, comprenant une extrémité 86 correspondant à la forme interne du corps (mais avec une moindre longueur de section), une partie intermédiaire 88 correspondant à la forme de la partie de transition et une partie opposée 90 correspondant à la forme interne de l'extrémité du tube.Next, a punch 84 is used, as shown in FIG. 7, comprising an end 86 corresponding to the internal shape of the body (but with a shorter section length), an intermediate part 88 corresponding to the shape of the transition part and an opposite part 90 corresponding to the internal shape of the end of the tube.

Le poinçon 84 est introduit complètement dans l'extrémité du tube, ce qui permet d'assurer la conformation de l'extrémité 16 et de la partie de transition 14.The punch 84 is completely inserted into the end of the tube, which ensures the conformation of the end 16 and of the transition part 14.

Ensuite, les deux mâchoires sont rapprochées complètement l'une de l'autre pour arriver dans la position des figures 8 et 9, le poinçon restant en place.Then, the two jaws are brought completely together to arrive in the position of Figures 8 and 9, the punch remaining in place.

Il suffit ensuite de retirer le poinçon et d'écarter les deux mâchoires pour récupérer le tube dont l'extrémité a été déformée.Then simply remove the punch and spread the two jaws to recover the tube whose end has been deformed.

Le dispositif 60 permet de réaliser la conformation du tube dans des conditions précises et rapides convenant à des chaînes de fabrication à grande vitesse.The device 60 allows the tube to be shaped under precise and rapid conditions suitable for high speed production lines.

La conformation du tube s'effectue en principe sur ses deux extrémités pour permettre ensuite le montage de tels tubes entre les deux boîtes à eau d'un échangeur de chaleur.The tube is formed in principle on its two ends to then allow the mounting of such tubes between the two water boxes of a heat exchanger.

Il entre également dans le cadre de l'invention de réaliser des tubes d'échangeurs de chaleur comprenant deux faces incurvées 28, au lieu d'une seule face incurvée, comme montré précédemment à la figure 1.It also falls within the scope of the invention to produce heat exchanger tubes comprising two curved faces 28, instead of a single curved face, as shown previously in FIG. 1.

Le tube de l'invention convient tout particulièrement à des échangeurs de chaleur, en particulier à des radiateurs de refroidissement pour véhicule automobile.The tube of the invention is very particularly suitable for heat exchangers, in particular for motor vehicle cooling radiators.

Claims (12)

Tube d'échangeur de chaleur, comprenant : - un corps (12) de section oblongue (S1) délimité par deux grandes faces (18) et par deux petites faces (20), - une extrémité (14) de section oblongue (S2) délimitée par deux grandes faces (22) et par deux petites faces (24), - une partie de transition (16) reliant le corps et l'extrémité, - la section (S1) du corps ayant une longueur et une largeur respectivement supérieure et inférieure à la longueur et à la largeur de la section (S2) de l'extrémité, caractérisé en ce que la partie de transition (16) comprend deux faces inclinées (26) reliant les grandes faces (18) du corps et les grandes faces (22) de l'extrémité, et au moins une face incurvée (28) reliant une petite face (20) du corps et une petite face (24) de l'extrémité, d'une part, et les deux grandes faces (18) du corps, d'autre part.Heat exchanger tube, comprising: - a body (12) of oblong section (S1) delimited by two large faces (18) and by two small faces (20), one end (14) of oblong section (S2) delimited by two large faces (22) and by two small faces (24), - a transition part (16) connecting the body and the end, the section (S1) of the body having a length and a width respectively greater than and less than the length and the width of the section (S2) of the end, characterized in that the transition part (16) comprises two inclined faces (26) connecting the large faces (18) of the body and the large faces (22) of the end, and at least one curved face (28) connecting a small face (20) of the body and a small face (24) of the end, on the one hand, and the two large faces (18) of the body, on the other hand. Tube d'échangeur de chaleur selon la revendication 1, caractérisé en ce que les deux grandes faces (18) du corps, les deux grandes faces (22) de l'extrémité et les deux faces inclinées (26) de la partie de transition sont toutes des faces planes.Heat exchanger tube according to claim 1, characterized in that the two large faces (18) of the body, the two large faces (22) of the end and the two inclined faces (26) of the transition part are all flat faces. Tube d'échangeur de chaleur selon l'une des revendications 1 et 2, caractérisé en ce que les deux faces inclinées (26) de la partie de transition (16) forment chacune un angle de 30° par rapport à l'axe du tube.Heat exchanger tube according to either of Claims 1 and 2, characterized in that the two inclined faces (26) of the transition part (16) each form an angle of 30 ° relative to the axis of the tube . Tube d'échangeur de chaleur selon l'une des revendications 1 à 3, caractérisé en ce qu'il comporte une seule face incurvée (28) reliant une petite face (20) du corps et une petite face (24) de l'extrémité, tandis que l'autre petite face (20) du corps et l'autre petite face (24) de l'extrémité ont au moins une génératrice (G) commune.Heat exchanger tube according to one of claims 1 to 3, characterized in that it has a single curved face (28) connecting a small face (20) of the body and a small face (24) of the end , while the other small face (20) of the body and the other small face (24) of the end have at least one common generator (G). Tube d'échangeur de chaleur selon l'une des revendications 1 à 4, caractérisé en ce que la face incurvée (28) de la partie de transition affecte sensiblement la forme d'un tronçon de tore dont le diamètre correspond sensiblement à la largeur de la section (S1) du corps (12) du tube.Heat exchanger tube according to one of claims 1 to 4, characterized in that the curved face (28) of the transition part substantially affects the shape of a section of torus whose diameter corresponds substantially to the width of the section (S1) of the body (12) of the tube. Tube d'échangeur de chaleur selon la revendication 5, caractérisé en ce que la face incurvée (28) en forme de tronçon de tore possède une première extrémité (30) qui se raccorde dans le prolongement d'une petite face (20) du corps et une autre extrémité (32) qui se raccorde obliquement avec une petite face (24) de l'extrémité (14).Heat exchanger tube according to claim 5, characterized in that the curved face (28) in the shape of a torus section has a first end (30) which is connected in the extension of a small face (20) of the body and another end (32) which is connected obliquely with a small face (24) of the end (14). Tube d'échangeur de chaleur selon la revendication 6, caractérisé en ce que la face incurvée (28) se raccorde à la petite face (24) de l'extrémité à un niveau où la section (S1) du corps prend la forme de la section (S2) de l'extrémité.Heat exchanger tube according to claim 6, characterized in that the curved face (28) is connected to the small face (24) of the end at a level where the section (S1) of the body takes the form of the section (S2) of the end. Dispositif de conformation de l'extrémité d'un tube d'échangeur de chaleur selon l'une des revendications 1 à 7, caractérisé en ce qu'il comprend : - une première mâchoire (62) présentant une cavité interne ouverte (64) ayant une forme interne homologue de celle d'une moitié de la forme externe du corps et de l'extrémité du tube (10), dans la région d'une des petites faces (20) du corps, - une seconde mâchoire (66) présentant une cavité interne ouverte (68) ayant une forme interne homologue de celle d'une autre moitié de la forme externe du corps et de l'extrémité du tube (10), dans la région d'une autre petite face (20) du corps, et - un poinçon (84) déplaçable en translation axiale dans le tube (10), maintenu entre la première mâchoire (62) et la seconde mâchoire (66) rapprochées. Device for shaping the end of a heat exchanger tube according to one of claims 1 to 7, characterized in that it comprises: - A first jaw (62) having an open internal cavity (64) having an internal shape homologous to that of half of the external shape of the body and of the end of the tube (10), in the region of one of the small faces (20) of the body, - a second jaw (66) having an open internal cavity (68) having an internal shape homologous to that of another half of the external shape of the body and of the end of the tube (10), in the region of a other small face (20) of the body, and - A punch (84) movable in axial translation in the tube (10), held between the first jaw (62) and the second jaw (66) close together. Dispositif selon la revendication 8, caractérisé en ce que l'une au moins des deux mâchoires comporte un décrochement bruque (82) entre une partie (76) servant à la conformation de l'extrémité (14) du tube et une partie (78) servant à la conformation de la partie de transition (16), pour réaliser la face incurvée (28) du tube.Device according to claim 8, characterized in that at least one of the two jaws has a rough recess (82) between a part (76) serving to shape the end (14) of the tube and a part (78) serving to shape the transition part (16), to produce the curved face (28) of the tube. Dispositif selon l'une des revendications 8 et 9, caractérisé en ce qu'il comprend des moyens propres à : - rapprocher l'une vers l'autre la première mâchoire (62) et la seconde mâchoire (66) suivant une première course de déplacement dans une direction (D) transversale à l'axe du tube pour enserrer le tube sans le déformer, - rapprocher davantage la première mâchoire (62) et la seconde mâchoire (66) suivant une seconde course de déplacement dans la direction transversale (D) pour amorcer la déformation de l'extrémité du tube, - introduire axialement le poinçon (84) dans l'extrémité du tube partiellement déformée, maintenue entre la première mâchoire (62) et la seconde mâchoire (66), - rapprocher complètement la première mâchoire (62) et la seconde mâchoire (66) suivant une troisième course de déplacement dans la direction transversale (D), le poinçon (84) restant en place, - retirer le poinçon (84) du tube, et - écarter la première mâchoire (62) et la seconde mâchoire (66). Device according to one of claims 8 and 9, characterized in that it comprises means specific to: - bringing the first jaw (62) and the second jaw (66) towards each other in a first displacement travel in a direction (D) transverse to the axis of the tube to grip the tube without deforming it, - bringing the first jaw (62) and the second jaw (66) closer together following a second displacement travel in the transverse direction (D) to initiate the deformation of the end of the tube, - axially inserting the punch (84) into the end of the partially deformed tube, held between the first jaw (62) and the second jaw (66), - bringing the first jaw (62) and the second jaw (66) completely closer along a third displacement travel in the transverse direction (D), the punch (84) remaining in place, - remove the punch (84) from the tube, and - move aside the first jaw (62) and the second jaw (66). Echangeur de chaleur, caractérisé en ce qu'il comprend une multiplicité de tubes (10) selon l'une des revendications 1 à 7, dont les extrémités respectives (16) sont reçues dans des trous (44) d'une plaque collectrice (42).Heat exchanger, characterized in that it comprises a multiplicity of tubes (10) according to one of claims 1 to 7, the respective ends (16) of which are received in holes (44) in a collecting plate (42 ). Echangeur de chaleur selon la revendication 11, caractérisé en ce que les tubes (10) sont disposés par paires suivant deux rangées (R) et en ce que les tubes (10) d'une même paire sont accolés et ont leurs extrémités respectives (14) reçues dans un même trou (44) de la plaque collectrice (42).Heat exchanger according to claim 11, characterized in that the tubes (10) are arranged in pairs in two rows (R) and in that the tubes (10) of the same pair are joined and have their respective ends (14 ) received in the same hole (44) of the collector plate (42).
EP95100616A 1994-01-20 1995-01-18 Heat exchanger tube, process for making same and heat exchanger provided with such tubes Ceased EP0664428A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9400595 1994-01-20
FR9400595A FR2715216B1 (en) 1994-01-20 1994-01-20 Heat exchanger tube, process for its conformation and heat exchanger comprising such tubes.

Publications (1)

Publication Number Publication Date
EP0664428A1 true EP0664428A1 (en) 1995-07-26

Family

ID=9459218

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95100616A Ceased EP0664428A1 (en) 1994-01-20 1995-01-18 Heat exchanger tube, process for making same and heat exchanger provided with such tubes

Country Status (7)

Country Link
US (1) US5579832A (en)
EP (1) EP0664428A1 (en)
JP (1) JPH07218170A (en)
KR (1) KR950033404A (en)
CN (1) CN1111748A (en)
BR (1) BR9500247A (en)
FR (1) FR2715216B1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19649129A1 (en) * 1996-11-27 1998-05-28 Behr Gmbh & Co Flat tube heat exchanger with shaped flat tube end section
DE19820937A1 (en) * 1998-05-09 1999-11-11 Behr Gmbh & Co Flat tube for heat exchanger in vehicle cooling system
EP1574802A2 (en) * 2004-03-13 2005-09-14 Dr.Ing. h.c.F. Porsche Aktiengesellschaft Heat exchanger, more particularly charged air cooler for automotive vehicle

Families Citing this family (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2740869B1 (en) * 1995-11-02 1997-12-19 Valeo Thermique Moteur Sa HEAT EXCHANGER WITH TUBES OF OVAL OR OBLONG SECTION AND ITS ASSEMBLY METHOD
FR2742535B1 (en) 1995-12-19 1998-01-30 Valeo Climatisation BRAZED FLUID BOX HEAT EXCHANGER, ESPECIALLY FOR MOTOR VEHICLES
DE19722097A1 (en) * 1997-05-27 1998-12-03 Behr Gmbh & Co Heat exchanger and heat exchanger arrangement for a motor vehicle
DE19846267A1 (en) * 1998-10-08 2000-04-13 Behr Gmbh & Co Collector tube unit for a heat exchanger
FR2786558B1 (en) * 1998-11-30 2001-02-02 Valeo Thermique Moteur Sa FLAT TUBE FOR REDUCED WIDTH HEAT EXCHANGER
JP2000346585A (en) * 1999-06-07 2000-12-15 Mitsubishi Heavy Ind Ltd Heat exchanger
DE10103570A1 (en) * 2001-01-26 2002-08-01 Modine Mfg Co Heat exchangers and manufacturing processes
CN1323801C (en) * 2003-07-09 2007-07-04 江秀霞 Combined method of heat eliminating fin and heat conduction pipe or connection part , and processing machine therefor
CA2443496C (en) * 2003-09-30 2011-10-11 Dana Canada Corporation Tube bundle heat exchanger comprising tubes with expanded sections
WO2008048252A2 (en) * 2006-10-13 2008-04-24 Carrier Corporation Refrigeration unit comprising a micro channel heat exchanger
FR2912209B1 (en) * 2007-02-06 2013-08-23 Valeo Systemes Thermiques MULTI-CIRCUIT EXCHANGER
US8286594B2 (en) * 2008-10-16 2012-10-16 Lochinvar, Llc Gas fired modulating water heating appliance with dual combustion air premix blowers
US8517720B2 (en) * 2008-10-16 2013-08-27 Lochinvar, Llc Integrated dual chamber burner
JP5356068B2 (en) * 2009-02-25 2013-12-04 昭和電工株式会社 Steering support beam and manufacturing method thereof
US8844472B2 (en) * 2009-12-22 2014-09-30 Lochinvar, Llc Fire tube heater
DE102010003146A1 (en) * 2010-03-23 2011-09-29 Ford Global Technologies, Llc Method for heat exchange between cabin and cooling system of combustion engine of motor car, involves flowing coolant from cooling circuit of combustion engine to heat exchanger unit via pumps before start of combustion engine
DE102010026280A1 (en) 2010-07-06 2012-01-12 Behr Gmbh & Co. Kg Method for producing a tube for a heat exchanger, in particular for a motor vehicle
US9097436B1 (en) 2010-12-27 2015-08-04 Lochinvar, Llc Integrated dual chamber burner with remote communicating flame strip
US20140041843A1 (en) * 2012-08-09 2014-02-13 Eric Lindell Heat Exchanger Tube, Heat Exchanger Tube Assembly, And Methods Of Making The Same
US9015923B2 (en) 2012-08-09 2015-04-28 Modine Manufacturing Company Heat exchanger tube, heat exchanger tube assembly, and methods of making the same
US9302337B2 (en) 2012-08-09 2016-04-05 Modine Manufacturing Company Heat exchanger tube, heat exchanger tube assembly, and methods of making the same
US20140041844A1 (en) * 2012-08-09 2014-02-13 Eric Lindell Heat Exchanger Tube, Heat Exchanger Tube Assembly, And Methods Of Making The Same
GB2509762B (en) * 2013-01-14 2015-02-04 Halla Visteon Climate Control Tube for Heat Exchanger
US9464805B2 (en) 2013-01-16 2016-10-11 Lochinvar, Llc Modulating burner
US10317142B2 (en) 2014-08-25 2019-06-11 Hanon Systems Heat exchanger having a mechanically assembled header
US11079181B2 (en) * 2018-05-03 2021-08-03 Raytheon Technologies Corporation Cast plate heat exchanger with tapered walls
CN109433880B (en) * 2018-11-02 2020-04-21 宁波市晶隆电子商务有限公司 Aluminum pipe flattening processing device for refrigerator evaporator

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR914783A (en) * 1943-10-06 1946-10-17 Ici Ltd heat exchanger
FR2474674A1 (en) * 1980-01-24 1981-07-31 Ferodo Sa Heat exchanger metal pipe end forming - involves radially compressing pipe end in two stages and cylindrical ram is then inserted (NL 28.1.81)
US4546824A (en) * 1984-03-19 1985-10-15 Mccord Heat Transfer Corporation Heat exchanger
EP0253167A1 (en) * 1986-07-09 1988-01-20 Süddeutsche Kühlerfabrik Julius Fr. Behr GmbH & Co. KG Heat-exchanger, more particularly evaporator for refrigerant
FR2674322A1 (en) * 1991-03-20 1992-09-25 Valeo Thermique Moteur Sa TUBE BEAM HEAT EXCHANGER, PARTICULARLY FOR A MOTOR VEHICLE.

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1232414A (en) * 1968-02-02 1971-05-19
DE2166469A1 (en) * 1971-09-06 1974-05-09 Gea Luftkuehler Happel Gmbh Air cooled finned condenser tubes - widened to rectangular ends which adjoin one another at connection to headers, thus eliminating tubeplates
JPS5895190A (en) * 1981-12-02 1983-06-06 Kiyoteru Takayasu Heat exchanger
US4730669A (en) * 1986-02-03 1988-03-15 Long Manufacturing Ltd. Heat exchanger core construction utilizing a diamond-shaped tube-to-header joint configuration
US5099576A (en) * 1989-08-29 1992-03-31 Sanden Corporation Heat exchanger and method for manufacturing the heat exchanger
FR2674321B1 (en) * 1991-03-20 1993-06-04 Valeo Thermique Moteur Sa HEAT EXCHANGER WITH MULTIPLE ROWS OF TUBES, PARTICULARLY FOR A MOTOR VEHICLE.

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR914783A (en) * 1943-10-06 1946-10-17 Ici Ltd heat exchanger
FR2474674A1 (en) * 1980-01-24 1981-07-31 Ferodo Sa Heat exchanger metal pipe end forming - involves radially compressing pipe end in two stages and cylindrical ram is then inserted (NL 28.1.81)
US4546824A (en) * 1984-03-19 1985-10-15 Mccord Heat Transfer Corporation Heat exchanger
EP0253167A1 (en) * 1986-07-09 1988-01-20 Süddeutsche Kühlerfabrik Julius Fr. Behr GmbH & Co. KG Heat-exchanger, more particularly evaporator for refrigerant
FR2674322A1 (en) * 1991-03-20 1992-09-25 Valeo Thermique Moteur Sa TUBE BEAM HEAT EXCHANGER, PARTICULARLY FOR A MOTOR VEHICLE.

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19649129A1 (en) * 1996-11-27 1998-05-28 Behr Gmbh & Co Flat tube heat exchanger with shaped flat tube end section
DE19820937A1 (en) * 1998-05-09 1999-11-11 Behr Gmbh & Co Flat tube for heat exchanger in vehicle cooling system
EP1574802A2 (en) * 2004-03-13 2005-09-14 Dr.Ing. h.c.F. Porsche Aktiengesellschaft Heat exchanger, more particularly charged air cooler for automotive vehicle
EP1574802A3 (en) * 2004-03-13 2011-09-07 Dr. Ing. h.c. F. Porsche AG Heat exchanger, more particularly charged air cooler for automotive vehicle

Also Published As

Publication number Publication date
FR2715216A1 (en) 1995-07-21
FR2715216B1 (en) 1996-02-16
BR9500247A (en) 1995-10-17
US5579832A (en) 1996-12-03
CN1111748A (en) 1995-11-15
KR950033404A (en) 1995-12-26
JPH07218170A (en) 1995-08-18

Similar Documents

Publication Publication Date Title
EP0664428A1 (en) Heat exchanger tube, process for making same and heat exchanger provided with such tubes
EP0505244B1 (en) Heat exchanger with tube bundle, more particularly for motor vehicle
EP0779489B1 (en) Heat exchanger and endplate for heat exchanger
EP0779490A1 (en) End plate for heat exchanger, method for manufacturing the same, and heat exchanger comprising such end plate
WO2000019163A1 (en) Heat exchanger with reduced space requirement, in particular for motor vehicle
FR2462215A1 (en) METHOD FOR CONFORMING A TUBE ESPECIALLY FOR HEAT EXCHANGER AND HEAT EXCHANGER WITH TUBES SO COMPLIANT
WO2010049261A1 (en) Fin for a heat exchanger, and heat exchanger including such a fin
EP0514249B1 (en) Method for manufacture of a tube bundle heat-exchanger
EP0566472A1 (en) Tubular header box and manufacturing method of a heat-exchanger by driving heat-exchanger tubes
EP3080542B1 (en) Header box and corresponding heat exchanger
WO2007048888A1 (en) Heat exchanger with flat twisted tubes
EP0176407B1 (en) Header box for a heat exchanger and heat exchanger comprising this header box
FR2787180A1 (en) FOLDED TUBE FOR HEAT EXCHANGER AND METHOD FOR CONFORMING SAME
EP0567410A1 (en) Heat exchanger with tubes of oblong cross-section, especially for motor vehicles
EP0665414A1 (en) Heat exchanger tube, more particularly for automotive vehicle, process for making same and heat exchanger provided with such tubes
EP3298338B1 (en) Heat exchanger, in particular for a motor vehicle
EP0692692A1 (en) Pipe having an oblong cross-section for heat exchanger
WO2005090892A1 (en) Collector box provided with a connection tubing for a soldered heat exchanger
FR2735221A1 (en) Flat tube heat exchanger, e.g. for motor vehicle radiator
FR2823840A1 (en) Heat exchanger folded tube is obtained by folding metal strip over itself to define two channels separated by partition to form transverse member created by strip folded edges
FR2474674A1 (en) Heat exchanger metal pipe end forming - involves radially compressing pipe end in two stages and cylindrical ram is then inserted (NL 28.1.81)
FR2700610A1 (en) Heat exchanger tube bundle assembly for motor vehicle etc.
FR2764054A1 (en) Heat exchanger, esp for supercharged vehicle engine air cooler
FR2807153A1 (en) Method of attaching connector to heat exchanger tube has connector clipped onto tube and retained by welding
WO2006087447A1 (en) Improved collector plate, collector box and heat exchanger comprising one such collector plate

Legal Events

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

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): DE ES GB IT SE

17P Request for examination filed

Effective date: 19960116

17Q First examination report despatched

Effective date: 19960927

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

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

Free format text: STATUS: THE APPLICATION HAS BEEN REFUSED

18R Application refused

Effective date: 19980524