FR2765817A1 - FOLDED TUBE FOR A HEAT EXCHANGER, ESPECIALLY A MOTOR VEHICLE - Google Patents
FOLDED TUBE FOR A HEAT EXCHANGER, ESPECIALLY A MOTOR VEHICLE Download PDFInfo
- Publication number
- FR2765817A1 FR2765817A1 FR9708891A FR9708891A FR2765817A1 FR 2765817 A1 FR2765817 A1 FR 2765817A1 FR 9708891 A FR9708891 A FR 9708891A FR 9708891 A FR9708891 A FR 9708891A FR 2765817 A1 FR2765817 A1 FR 2765817A1
- Authority
- FR
- France
- Prior art keywords
- layer
- plate
- brazing
- longitudinal edges
- heat exchanger
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F21/00—Constructions of heat-exchange apparatus characterised by the selection of particular materials
- F28F21/08—Constructions of heat-exchange apparatus characterised by the selection of particular materials of metal
- F28F21/081—Heat exchange elements made from metals or metal alloys
- F28F21/084—Heat exchange elements made from metals or metal alloys from aluminium or aluminium alloys
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
- B21C37/06—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
- B21C37/14—Making tubes from double flat material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
- B21C37/06—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
- B21C37/15—Making tubes of special shape; Making tube fittings
- B21C37/151—Making tubes with multiple passages
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- 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
- F28D1/03—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 plate-like or laminated conduits
- F28D1/0391—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 plate-like or laminated conduits a single plate being bent to form one or more conduits
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- 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
- F28F9/04—Arrangements for sealing elements into header boxes or end plates
- F28F9/16—Arrangements for sealing elements into header boxes or end plates by permanent joints, e.g. by rolling
- F28F9/18—Arrangements for sealing elements into header boxes or end plates by permanent joints, e.g. by rolling by welding
Abstract
Description
Tube plié pour un échangeur de chaleur, notamment de véhicule automobile
L'invention concerne le domaine des échangeurs de chaleur, notamment de véhicule automobile, et plus précisément les tubes pliés utilisés dans certains types d'échangeurs de chaleur de technologie dite "tube-intercalaire". Folded tube for a heat exchanger, in particular for a motor vehicle
The invention relates to the field of heat exchangers, in particular of a motor vehicle, and more precisely the folded tubes used in certain types of heat exchangers of technology known as "tube-insert".
Cette invention concerne plus particulièrement encore les tubes comprenant une plaque métallique (ou âme) qui présente des faces interne et externe parallèles entre elles et comporte une partie centrale terminée par deux bords longitudinaux parallèles entre eux. La paroi métallique est destinée à être pliée, avec réunion des deux bords longitudinaux, de sorte que, d'une part, leurs faces externes soient parallèles entre elles et au contact, et d'autre part, que leurs faces d'extrémité contactent la face interne de la partie centrale, délimitant ainsi deux cavités longitudinales indépendantes dans lesquelles peut circuler un fluide, par exemple frigorigène.This invention relates more particularly to tubes comprising a metal plate (or core) which has internal and external faces parallel to each other and has a central part terminated by two longitudinal edges parallel to each other. The metal wall is intended to be folded, with the meeting of the two longitudinal edges, so that, on the one hand, their external faces are parallel to each other and in contact, and on the other hand, that their end faces contact the internal face of the central part, thus delimiting two independent longitudinal cavities in which a fluid, for example refrigerant, can circulate.
Les tubes pliés de ce type sont habituellement revêtus sur leur face externe d'une couche de brasure qui est destinée à solidariser les bords longitudinaux entre eux ainsi qu'à la partie centrale, lors du passage dans un four de brasage.The folded tubes of this type are usually coated on their outer face with a layer of solder which is intended to secure the longitudinal edges to each other and to the central part, when passing through a brazing furnace.
Or, pendant cette opération de brasage, la brasure qui se trouve sur les faces externes des bords longitudinaux peut diffuser en direction des intercalaires, notamment. La distance qui sépare alors les faces externes des deux bords longitudinaux peut devenir localement sensiblement égale à deux fois l'épaisseur initiale de la couche de brasure, et par conséquent l'étanchéité des tubes peut ne plus être assurée. Ce phénomène est encore accru au niveau des ouvertures des boites collectrices que traversent les extrémités transversales des tubes. However, during this brazing operation, the brazing which is on the external faces of the longitudinal edges can diffuse in the direction of the spacers, in particular. The distance which then separates the external faces of the two longitudinal edges can locally become substantially equal to twice the initial thickness of the brazing layer, and consequently the sealing of the tubes can no longer be ensured. This phenomenon is further increased at the openings of the manifolds through which the transverse ends of the tubes pass.
En conséquence, un but de l'invention est de procurer un tube pour échangeur de chaleur qui ne présente pas l'inconvénient précité.Consequently, an object of the invention is to provide a tube for a heat exchanger which does not have the above-mentioned drawback.
L'invention propose à cet effet un tube du type décrit en introduction, dans lequel seule la face interne de la plaque est recouverte, avant brasage, d'une couche de brasure, laquelle est de préférence constituée d'un alliage d'aluminium et de silicium.To this end, the invention provides a tube of the type described in the introduction, in which only the internal face of the plate is covered, before brazing, with a layer of brazing, which preferably consists of an aluminum alloy and of silicon.
La Demanderesse s'est en effet aperçue que, de façon surprenante, en ne revêtant de brasure que la face interne des tubes pliés, la solidarisation de leurs bords longitudinaux était très sensiblement améliorée. Une explication consisterait dans le fait qu'en l'absence de placage (couche de brasure), les faces externes des bords longitudinaux d'un tube qui vient d'être plié sont quasiment au contact l'une de l'autre. L'espace à combler entre lesdits bords devenant alors extrêmement réduit, la brasure présente sur les faces internes de la partie centrale et des bords longitudinaux de la plaque-tube est suffisante pour assurer le comblement étanche, la brasure migrant entre les bords par capillarité.The Applicant has in fact noticed that, surprisingly, by coating only the internal face of the bent tubes, the joining of their longitudinal edges was very significantly improved. One explanation would consist in the fact that in the absence of plating (brazing layer), the external faces of the longitudinal edges of a tube which has just been bent are almost in contact with one another. The space to be filled between said edges then becoming extremely reduced, the solder present on the internal faces of the central part and of the longitudinal edges of the tube plate is sufficient to ensure the tight filling, the solder migrating between the edges by capillarity.
Dans une application à un échangeur de chaleur brasé, notamment de véhicule automobile, la solidarisation des extrémités transversales des tubes pliés dans les ouvertures transversales d'une plaque collectrice de l'échangeur de chaleur est également améliorée du fait que l'espace à combler est notablement réduit.In an application to a brazed heat exchanger, in particular for a motor vehicle, the joining of the transverse ends of the tubes bent in the transverse openings of a collector plate of the heat exchanger is also improved because the space to be filled is markedly reduced.
Avantageusement, on peut prévoir une couche auxiliaire, par exemple de type anticorrosive, entre la face interne d'une plaque-tube et la couche de brasure.Advantageously, an auxiliary layer, for example of the anticorrosive type, can be provided between the internal face of a tube plate and the solder layer.
Préférentiellement, une telle couche auxiliaire anticorrosive est constituée d'un alliage d'aluminium et de zinc.Preferably, such an anticorrosive auxiliary layer consists of an aluminum and zinc alloy.
L'invention s'applique plus particulièrement aux tubes réalisés en aluminium, ou dans un alliage d'aluminium. The invention applies more particularly to tubes made of aluminum, or of an aluminum alloy.
Dans la description qui suit, faite à titre d'exemple, on se réfère aux dessins annexés, sur lesquels - la figure 1 est une vue en coupe transversale schématique d'une plaque-tube revêtue sur sa face interne d'une seule couche de brasure, avant repliement; - la figure 2 est une vue en coupe transversale schématique d'une plaque-tube revêtue sur sa face interne d'une couche auxiliaire et d'une couche de brasure, avant repliement; - la figure 3 illustre, dans une vue en coupe transversale, la plaque-tube de la figure 1 après repliement; - la figure 4 illustre schématiquement une partie d'un échangeur de chaleur équipé de tubes selon l'invention; et - la figure 5 est un agrandissement d'une partie de la figure 4, dans une vue en coupe transversale.In the description which follows, given by way of example, reference is made to the appended drawings, in which - FIG. 1 is a diagrammatic cross-section view of a tube-plate coated on its internal face with a single layer of solder, before folding; - Figure 2 is a schematic cross-sectional view of a tube plate coated on its internal face with an auxiliary layer and a layer of solder, before folding; - Figure 3 illustrates, in a cross-sectional view, the tube plate of Figure 1 after folding; - Figure 4 schematically illustrates part of a heat exchanger fitted with tubes according to the invention; and - Figure 5 is an enlargement of part of Figure 4, in a cross-sectional view.
L'invention concerne des tubes pliés à deux cavités propres à être utilisés dans des échangeurs de chaleur brasés, comme par exemple des radiateurs de chauffage, des radiateurs de refroidissement, des radiateurs de refroidissement de circuits de suralimentation (compact ou surfacique), ou bien encore des condenseurs. De tels échangeurs sont réalisés dans une technologie dite "tube-intercalaire", de préférence.The invention relates to bent tubes with two cavities suitable for use in brazed heat exchangers, such as for example heating radiators, cooling radiators, cooling radiators of supercharging circuits (compact or surface), or else still condensers. Such exchangers are produced in a technology called "tube-spacer", preferably.
Comme cela est partiellement illustré sur la figure 5, un échangeur de chaleur comprend classiquement une multiplicité de tubes longitudinaux 1 montés entre deux boites collectrices 2 placées dans des positions transversales et dans lesquels circule un fluide, comme par exemple un fluide frigorigène. Les tubes 1 sont séparés les uns des autres par des intercalaires 3, qui dans l'exemple illustré sont placés dans une position transversale par rapport à l'axe longitudinal des tubes. As is partially illustrated in FIG. 5, a heat exchanger conventionally comprises a multiplicity of longitudinal tubes 1 mounted between two manifolds 2 placed in transverse positions and in which a fluid, such as a refrigerant, circulates. The tubes 1 are separated from each other by spacers 3, which in the example illustrated are placed in a transverse position relative to the longitudinal axis of the tubes.
De tels intercalaires, sont de préférences réalisés en aluminium, ou dans un alliage d'aluminium. Il en va de même des tubes 1 et de la boîte collectrice 2.Such spacers are preferably made of aluminum, or an aluminum alloy. The same applies to the tubes 1 and the manifold 2.
Les divers constituants d'un tel échangeur de chaleur, à solidariser, sont tout d'abord assemblés, puis leur solidarisation est assurée par le passage dans un four de brasage.The various constituents of such a heat exchanger, to be joined, are first assembled, then their joining is ensured by passing through a brazing oven.
Pour réaliser un tube 1 selon l'invention, on utilise une plaque métallique 4 de préférence réalisée en aluminium, comme indiqué ci-avant, et plus préférentiellement encore dans un alliage d'aluminium de la série dite "4000". Cette plaque métallique 4 encore appelée âme est de forme générale parallélépipédique. Plus précisément, cette plaque est de forme rectangulaire, et comporte par conséquent deux grands côtés dit "bords longitudinaux" 5 et deux petits côtés dit "bords transversaux" 6 perpendiculaires aux bords longitudinaux 5.To produce a tube 1 according to the invention, a metal plate 4 is preferably used, made of aluminum, as indicated above, and more preferably still in an aluminum alloy of the so-called "4000" series. This metal plate 4 also called core is of generally parallelepiped shape. More precisely, this plate is rectangular in shape, and consequently has two long sides called "longitudinal edges" 5 and two short sides called "transverse edges" 6 perpendicular to the longitudinal edges 5.
La plaque métallique 4 comprend une face dite "externe" 7 et une face dite "interne" 8 parallèle à la face externe et opposée à celle-ci. La justification des qualificatifs d'interne et d'externe sera donnée plus loin.The metal plate 4 comprises a so-called "external" face 7 and a so-called "internal" face 8 parallel to the external face and opposite to it. The justification of the qualifiers internal and external will be given below.
Selon l'invention, on revêt la face interne 8 d'une couche de brasure dite encore couche de placage 9. Seul cette face interne 8 reçoit le placage 9 qui est de préférence réalisé dans un alliage d'aluminium et de silicium.According to the invention, the internal face 8 is coated with a brazing layer also called plating layer 9. Only this internal face 8 receives the plating 9 which is preferably made of an aluminum and silicon alloy.
En variante, comme illustré sur la figure 2, on peut prévoir entre la face interne 8 et la couche de brasure ou placage 9 une couche auxiliaire 10 destinée, par exemple, à assurer une protection anti-corrosion à la plaque 4. Une telle couche 10 est de préférence réalisée dans un alliage d'aluminium et de zinc.As an alternative, as illustrated in FIG. 2, an auxiliary layer 10 can be provided between the internal face 8 and the solder or plating layer 9 intended, for example, to provide anti-corrosion protection to the plate 4. Such a layer 10 is preferably made of an aluminum and zinc alloy.
La plaque métallique 4, revêtue sur sa seule face interne 8 d'une couche de brasure 9, est ensuite pliée de sorte que sa face interne délimite deux cavités longitudinales 11-1 et 11-2 indépendantes.The metal plate 4, coated on its only internal face 8 with a layer of solder 9, is then folded so that its internal face delimits two independent longitudinal cavities 11-1 and 11-2.
Pour permettre la constitution de ces deux cavités 11-1 et 11-2 indépendantes, on replie les deux bords longitudinaux 5 de la plaque métallique 4 de sorte qu'ils soient sensiblement perpendiculaires à la partie centrale 12 de cette même plaque 4, et que les faces externes 7 respectives de ces deux bords longitudinaux 5 soient sensiblement au contact l'une de l'autre. De plus, pour assurer l'indépendance entre les deux cavités 11-1 et 11-2, les faces d'extrémité 13 des bords longitudinaux 5 (sensiblement perpendiculaires aux faces interne 8 et externe 7) sont sensiblement au contact de la couche de brasure 9 placé sur la face interne 8 de la partie centrale 12 de la plaque 4.To allow the constitution of these two independent cavities 11-1 and 11-2, the two longitudinal edges 5 of the metal plate 4 are folded back so that they are substantially perpendicular to the central part 12 of this same plate 4, and that the respective external faces 7 of these two longitudinal edges 5 are substantially in contact with one another. In addition, to ensure independence between the two cavities 11-1 and 11-2, the end faces 13 of the longitudinal edges 5 (substantially perpendicular to the internal 8 and external 7 faces) are substantially in contact with the solder layer. 9 placed on the internal face 8 of the central part 12 of the plate 4.
La solidarisation à étanchéité de bords longitudinaux 5 d'une plaque-tube ainsi formée, ainsi que celle des faces d'extrémité 13 de ces mêmes bords longitudinaux et de la face interne 8 de sa partie centrale 12 est assurée par le passage dans un four de brasage.The sealing edges of the longitudinal edges 5 of a tube-plate thus formed, as well as that of the end faces 13 of these same longitudinal edges and of the internal face 8 of its central part 12, are provided by passing through an oven. soldering.
Plus précisément, lorsque les tubes selon l'invention sont utilisés dans un échangeur de chaleur, du type de celui partiellement illustré sur la figure 4, cette solidarisation par brasage s'effectue après assemblage des différents constituants de l'échangeur de chaleur qui doivent être solidarisé les uns aux autres. Cela concerne principalement les tubes pliés 1, les intercalaires 3 placés entre ces tubes pliés 1, et la plaque collectrice 14 de la boîte collectrice 2. Cette plaque collectrice 14 comporte une multiplicité d'ouvertures transversales conformées 15, parallèles les unes aux autres et destinées à recevoir chacune une extrémité transversale (ou bord transversal) 6 d'un tube plié 1.More specifically, when the tubes according to the invention are used in a heat exchanger, of the type partially illustrated in FIG. 4, this connection by brazing takes place after assembly of the various constituents of the heat exchanger which must be united to each other. This mainly concerns the folded tubes 1, the spacers 3 placed between these folded tubes 1, and the manifold plate 14 of the manifold 2. This manifold plate 14 has a multiplicity of shaped transverse openings 15, parallel to each other and intended to each receive a transverse end (or transverse edge) 6 of a bent tube 1.
Pour permettre la solidarisation des intercalaires 3 sur les faces externes 7 des tubes pliés 1, chaque intercalaire est revêtu intégralement d'une couche de brasure (ou placage), sur ses deux faces. De même, pour permettre la solidarisation des extrémités transversales 6 des tubes pliés 1 et de la plaque collectrice 14 au niveau des ouvertures 15, la plaque collectrice 14 comprend sur l'une de ses faces une couche de brasure (ou placage), la face revêtue de placage dépendant de l'orientation des collets formés au niveau des ouvertures 15 en vue de recevoir à étanchéité les extrémités transversales 6 des tubes.To allow the interleaving of the spacers 3 on the external faces 7 of the bent tubes 1, each spacer is entirely coated with a layer of solder (or plating), on its two faces. Likewise, to allow the transverse ends 6 of the bent tubes 1 and the collector plate 14 to be joined at the openings 15, the collector plate 14 comprises on one of its faces a layer of solder (or plating), the face coated with veneer depending on the orientation of the collars formed at the openings 15 in order to receive the transverse ends 6 of the tubes with sealing.
Une fois que les éléments à braser ont été assemblés les uns aux autres, ils sont placés dans un four de brasage. Lors de cette opération de brasage, la couche de brasure interne 9 qui se trouve placée sur la face interne 8 d'un tube plié 1 va migrer par capillarité dans les espaces réduits qui se trouvent, d'une part, entre les faces externes 7 des deux bords longitudinaux 5, et d'autre part, entre les faces d'extrémité 13 de ces mêmes bords longitudinaux 5 et la face interne 8 de la partie centrale 12 du tube plié.Once the elements to be brazed have been assembled to each other, they are placed in a brazing furnace. During this brazing operation, the internal brazing layer 9 which is placed on the internal face 8 of a bent tube 1 will migrate by capillarity in the reduced spaces which are, on the one hand, between the external faces 7 two longitudinal edges 5, and on the other hand, between the end faces 13 of these same longitudinal edges 5 and the internal face 8 of the central part 12 of the folded tube.
Une partie de ce placage va également migrer dans l'espace 16 en forme de sillon de section transverse sensiblement triangulaire, formé du fait du repliement à perpendicularité des bords longitudinaux 5. Le comblement du reste de ce sillon 16, notamment au niveau d'une ouverture 15 de la plaque collectrice 14 est assuré par la diffusion d'une partie du placage placé sur les intercalaires 3.Part of this cladding will also migrate into space 16 in the form of a furrow of substantially triangular cross section, formed due to the perpendicular folding of the longitudinal edges 5. The filling of the rest of this furrow 16, in particular at a opening 15 of the collecting plate 14 is ensured by the diffusion of part of the veneer placed on the spacers 3.
L'invention ne se limite pas au mode de réalisation décrit ci-avant, à titre d'exemple, mais elle s'étend à d'autres variantes que pourra développer l'homme de l'art dans le cadre des revendications ci-après. The invention is not limited to the embodiment described above, by way of example, but it extends to other variants which a person skilled in the art may develop within the framework of the claims below .
Claims (7)
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR9708891A FR2765817B1 (en) | 1997-07-11 | 1997-07-11 | FOLDED TUBE FOR A HEAT EXCHANGER, ESPECIALLY A MOTOR VEHICLE |
| PCT/FR1998/001473 WO1999002935A1 (en) | 1997-07-11 | 1998-07-08 | Folded tube for heat-exchanger, in particular for motor vehicle |
| DE19881141T DE19881141T1 (en) | 1997-07-11 | 1998-07-08 | Bent pipe for a heat exchanger, especially for motor vehicles |
| BR9806027-9A BR9806027A (en) | 1997-07-11 | 1998-07-08 | Brazed heat exchanger tube |
| JP11508264A JP2001500244A (en) | 1997-07-11 | 1998-07-08 | Tubes for heat exchangers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR9708891A FR2765817B1 (en) | 1997-07-11 | 1997-07-11 | FOLDED TUBE FOR A HEAT EXCHANGER, ESPECIALLY A MOTOR VEHICLE |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2765817A1 true FR2765817A1 (en) | 1999-01-15 |
| FR2765817B1 FR2765817B1 (en) | 1999-09-10 |
Family
ID=9509174
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR9708891A Expired - Lifetime FR2765817B1 (en) | 1997-07-11 | 1997-07-11 | FOLDED TUBE FOR A HEAT EXCHANGER, ESPECIALLY A MOTOR VEHICLE |
Country Status (5)
| Country | Link |
|---|---|
| JP (1) | JP2001500244A (en) |
| BR (1) | BR9806027A (en) |
| DE (1) | DE19881141T1 (en) |
| FR (1) | FR2765817B1 (en) |
| WO (1) | WO1999002935A1 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2801233A1 (en) * | 1999-11-24 | 2001-05-25 | Valeo Thermique Moteur Sa | Flat bent tube-type heat exchanger for production of car radiators has tubes made from strip of bent sheet, the surface of which is coated with silicon-containing aluminum-based brazing alloy, to provide a joint between tubes and inserts |
| FR2810729A1 (en) * | 2000-06-22 | 2001-12-28 | Valeo Thermique Moteur Sa | Heat exchanger tube for car radiator comprises metal strip which has external layer of brazing and is bent inwards to form tube with side walls whose ends rest against inner surface of sheet and have brazed coating |
| WO2002018862A1 (en) * | 2000-04-14 | 2002-03-07 | Llanelli Radiators Limited | Heat exchanger and tube therefor |
| EP1306156A1 (en) * | 2000-01-07 | 2003-05-02 | Zexel Valeo Climate Control Corporation | Heat exchanger |
| EP1878989A2 (en) * | 2006-07-06 | 2008-01-16 | Behr GmbH & Co. KG | Flat pipe for a heat exchanger and heat exchanger with flat pipes |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6530514B2 (en) | 2001-06-28 | 2003-03-11 | Outokumpu Oyj | Method of manufacturing heat transfer tubes |
| DE10201511A1 (en) * | 2002-01-17 | 2003-07-31 | Behr Gmbh & Co | Welded multi-chamber tube |
| US7032808B2 (en) | 2003-10-06 | 2006-04-25 | Outokumu Oyj | Thermal spray application of brazing material for manufacture of heat transfer devices |
| FR2886185B1 (en) * | 2005-05-30 | 2009-01-02 | Valeo Systemes Thermiques | METHOD OF BRAZING A HEAT EXCHANGER FOLDED TUBE, IN PARTICULAR FOR MOTOR VEHICLES, AND THE TUBE THUS OBTAINED |
| DE102010031468A1 (en) | 2010-07-16 | 2012-01-19 | Behr Gmbh & Co. Kg | Fluid channel for a heat exchanger |
| GB2486671A (en) * | 2010-12-22 | 2012-06-27 | Denso Marston Ltd | A Heat Exchanger, a Tube for a Heat Exchanger, a Method of making a tube for a Heat Exchanger and a Method of Making a Heat Exchanger |
| FR2973490B1 (en) * | 2011-03-31 | 2018-05-18 | Valeo Systemes Thermiques | THERMAL EXCHANGER TUBE, HEAT EXCHANGER AND CORRESPONDING PROCESSING METHOD |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0302232A1 (en) * | 1987-08-01 | 1989-02-08 | Behr GmbH & Co. | Flat tube for a heat exchanger |
| US5579837A (en) * | 1995-11-15 | 1996-12-03 | Ford Motor Company | Heat exchanger tube and method of making the same |
| FR2735221A1 (en) * | 1995-06-12 | 1996-12-13 | Valeo Thermique Moteur Sa | Flat tube heat exchanger, e.g. for motor vehicle radiator |
| JPH09122804A (en) * | 1996-05-07 | 1997-05-13 | Calsonic Corp | Welded tube for heat exchanger and its manufacture |
-
1997
- 1997-07-11 FR FR9708891A patent/FR2765817B1/en not_active Expired - Lifetime
-
1998
- 1998-07-08 JP JP11508264A patent/JP2001500244A/en active Pending
- 1998-07-08 DE DE19881141T patent/DE19881141T1/en not_active Withdrawn
- 1998-07-08 WO PCT/FR1998/001473 patent/WO1999002935A1/en active Application Filing
- 1998-07-08 BR BR9806027-9A patent/BR9806027A/en not_active Application Discontinuation
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0302232A1 (en) * | 1987-08-01 | 1989-02-08 | Behr GmbH & Co. | Flat tube for a heat exchanger |
| FR2735221A1 (en) * | 1995-06-12 | 1996-12-13 | Valeo Thermique Moteur Sa | Flat tube heat exchanger, e.g. for motor vehicle radiator |
| US5579837A (en) * | 1995-11-15 | 1996-12-03 | Ford Motor Company | Heat exchanger tube and method of making the same |
| JPH09122804A (en) * | 1996-05-07 | 1997-05-13 | Calsonic Corp | Welded tube for heat exchanger and its manufacture |
Non-Patent Citations (1)
| Title |
|---|
| PATENT ABSTRACTS OF JAPAN vol. 097, no. 009 30 September 1997 (1997-09-30) * |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2801233A1 (en) * | 1999-11-24 | 2001-05-25 | Valeo Thermique Moteur Sa | Flat bent tube-type heat exchanger for production of car radiators has tubes made from strip of bent sheet, the surface of which is coated with silicon-containing aluminum-based brazing alloy, to provide a joint between tubes and inserts |
| EP1306156A1 (en) * | 2000-01-07 | 2003-05-02 | Zexel Valeo Climate Control Corporation | Heat exchanger |
| EP1306156A4 (en) * | 2000-01-07 | 2009-11-11 | Zexel Valeo Climate Contr Corp | Heat exchanger |
| WO2002018862A1 (en) * | 2000-04-14 | 2002-03-07 | Llanelli Radiators Limited | Heat exchanger and tube therefor |
| FR2810729A1 (en) * | 2000-06-22 | 2001-12-28 | Valeo Thermique Moteur Sa | Heat exchanger tube for car radiator comprises metal strip which has external layer of brazing and is bent inwards to form tube with side walls whose ends rest against inner surface of sheet and have brazed coating |
| US6494254B2 (en) | 2000-06-22 | 2002-12-17 | Valeo Thermique Moteur | Brazed tube for a heat exchanger, method of manufacture and exchanger |
| EP1878989A2 (en) * | 2006-07-06 | 2008-01-16 | Behr GmbH & Co. KG | Flat pipe for a heat exchanger and heat exchanger with flat pipes |
| EP1878989A3 (en) * | 2006-07-06 | 2013-02-27 | Behr GmbH & Co. KG | Flat pipe for a heat exchanger and heat exchanger with flat pipes |
Also Published As
| Publication number | Publication date |
|---|---|
| DE19881141T1 (en) | 1999-07-08 |
| BR9806027A (en) | 1999-10-13 |
| FR2765817B1 (en) | 1999-09-10 |
| JP2001500244A (en) | 2001-01-09 |
| WO1999002935A1 (en) | 1999-01-21 |
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