FR2722563A1 - OBLONGUE CROSS SECTION TUBE FOR HEAT EXCHANGER - Google Patents
OBLONGUE CROSS SECTION TUBE FOR HEAT EXCHANGER Download PDFInfo
- Publication number
- FR2722563A1 FR2722563A1 FR9408819A FR9408819A FR2722563A1 FR 2722563 A1 FR2722563 A1 FR 2722563A1 FR 9408819 A FR9408819 A FR 9408819A FR 9408819 A FR9408819 A FR 9408819A FR 2722563 A1 FR2722563 A1 FR 2722563A1
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- Prior art keywords
- tube
- hole
- cross
- section
- holes
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Classifications
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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
- F28D1/04—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
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- 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
- B21D53/00—Making other particular articles
- B21D53/02—Making other particular articles heat exchangers or parts thereof, e.g. radiators, condensers fins, headers
- B21D53/08—Making other particular articles heat exchangers or parts thereof, e.g. radiators, condensers fins, headers of both metal tubes and sheet metal
- B21D53/085—Making other particular articles heat exchangers or parts thereof, e.g. radiators, condensers fins, headers of both metal tubes and sheet metal with fins places on zig-zag tubes or parallel tubes
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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
- F28F1/00—Tubular elements; Assemblies of tubular elements
- F28F1/10—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
- F28F1/12—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element
- F28F1/24—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending transversely
- F28F1/32—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending transversely the means having portions engaging further tubular elements
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Geometry (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
L'invention concerne un tube pour échangeur de chaleur.Le tube (20) présente, avant déformation, une section transversale de forme oblongue sensiblement homologue à celle d'un trou (12) d'une ailette (10), le tube (20) comportant deux flancs longitudinaux (22) en regard l'un de l'autre qui sont incurvés et ont leur convexité tournée vers l'intérieur du tube, si bien que le tube (20) présente une largeur extérieure restreinte (l) dans une région où les flancs longitudinaux (22) sont les plus proches l'un de l'autre.Application aux échangeurs de chaleur pour véhicules automobiles.The invention relates to a tube for a heat exchanger, the tube (20) having, before deformation, a cross section of oblong shape substantially homologous to that of a hole (12) of a fin (10), the tube (20). ) comprising two longitudinal sides (22) facing each other which are curved and have their convexity turned towards the interior of the tube, so that the tube (20) has a restricted outer width (l) in a region where the longitudinal sides (22) are closest to each other.Application to heat exchangers for motor vehicles.
Description
Tube à section transversale oblongue pour échangeur de chaleur L'inventionOblong cross section tube for heat exchanger The invention
se rapporte à un tube à section transversale oblongue pour un échangeur de chaleur, en particulier de refers to an oblong cross-sectional tube for a heat exchanger, in particular
véhicule automobile.motor vehicle.
Elle concerne aussi un échangeur de chaleur comprenant une multiplicité d'ailettes traversées par de tels tubes pour It also relates to a heat exchanger comprising a multiplicity of fins traversed by such tubes for
former un faisceau.form a beam.
L'invention concerne plus particulièrement un tube pour échangeur de chaleur, propre à traverser une multiplicité d'ailettes par des trous que présentent ces dernières et à être ensuite appliqué sous pression contre les bords des trous par déformation de sa paroi, chaque trou ayant une section transversale oblongue telle que le bord du trou présente des parties longitudinales en regard l'une de l'autre qui sont incurvées et ont leur convexité tournée vers The invention relates more particularly to a tube for a heat exchanger, capable of passing through a multiplicity of fins by holes that they have and then to be applied under pressure against the edges of the holes by deformation of its wall, each hole having a oblong transverse section such that the edge of the hole has longitudinal portions facing each other which are curved and have their convexity turned towards
l'intérieur du trou.inside the hole.
On connaît déjà par le Brevet français No 77 27358 (publié sous le No 2 402 850), un tube de ce type qui présente, avant déformation, une section transversale oblongue avec deux flancs longitudinaux sensiblement parallèles, cette section transversale pouvant même affecter la forme d'un ovale plus French Patent No. 77 27358 (published under No. 2 402 850) already discloses a tube of this type which, before deformation, has an oblong transverse section with two substantially parallel longitudinal flanks, this transverse section possibly affecting the shape an oval more
ou moins elliptique.or less elliptical.
Selon le Brevet précité, on réalise un échangeur de chaleur en partant d'une pluralité de tubes ayant une telle section transversale oblongue et d'une multiplicité d'ailettes présentant en alignement des trous oblongs ayant la forme According to the aforementioned patent, a heat exchanger is produced starting from a plurality of tubes having such an oblong transverse section and a plurality of fins having in alignment oblong holes having the shape
définie précédemment.previously defined.
On enfile alors les tubes dans les trous alignés des ailettes puis on déforme les tubes par expansion ou dilatation de manière à les appliquer sous pression contre les bords des The tubes are then threaded into the aligned holes of the fins and the tubes are then deformed by expansion or expansion so as to apply them under pressure against the edges of the tubes.
trous qui sont généralement entourés par des collets. holes that are usually surrounded by snares.
Après déformation des tubes, leurs parois épousent étroite- After deformation of the tubes, their walls marry closely
ment la forme des trous et affectent alors une section the shape of the holes and then affect a section
transversale correspondant à celle des trous des ailettes. transverse corresponding to that of the holes of the fins.
Mais, du fait que les tubes ont, avant déformation, des flancs longitudinaux sensiblement parallèles entre eux (voire concaves vers l'intérieur), alors que les bords des trous des ailettes ont des parties longitudinales incurvées à convexité tournée vers l'intérieur, il en résulte que ces tubes But, because the tubes have, before deformation, longitudinal flanks substantially parallel to each other (or concave inwardly), while the edges of the fin holes have curved longitudinal portions convexity turned inwardly there As a result, these tubes
subissent une forte striction lors de leur déformation. undergo a strong necking during their deformation.
Cette striction se produit avant tout dans les parties arron- This narrowing occurs first and foremost in the
dies, à faible rayon de courbure, qui relient les flancs dies, with a small radius of curvature, which connect the flanks
longitudinaux des tubes.longitudinal tubes.
En effet, le jeu entre le bord du trou de l'ailette et le tube (au niveau des parties arrondies du tube) est plus important que le jeu minimal nécessaire à l'enfilage du tube Indeed, the clearance between the edge of the fin hole and the tube (at the rounded portions of the tube) is greater than the minimum clearance required for threading the tube.
au travers des trous alignés des ailettes. through the aligned holes of the fins.
Cette striction peut générer l'éclatement du tube lors de This necking can cause the bursting of the tube during
l'évasement de ses extrémités après assemblage des collec- the flaring of its ends after assembling the collec-
teurs ou plaques à trous qui sont prévus habituellement aux perforated plates or plates which are normally provided for
extrémités du faisceau pour recevoir des boîtes à eau. beam ends to receive water boxes.
Un autre inconvénient de cette technique antérieure réside dans le fait que le gain potentiel de performance que Another disadvantage of this prior art lies in the fact that the potential gain in performance that
pourrait apporter ce profil de tube ne peut être exploité. could bring this tube profile can not be exploited.
En effet, pour un tube qui aurait un rayon de courbure (dans les parties arrondies) identique avant expansion et une largeur égale après expansion, il est préférable d'utiliser un trou d'ailette et un tube de forme ovale car ce tube a une résistance aérodynamique à l'air plus faible, et cela pour une section interne sensiblement équivalente à celle d'un tube après expansion tel qu'obtenu par le Brevet français précité. L'invention a notamment pour but de surmonter de tels inconvénients. Elle propose en conséquence un tube pour échangeur de chaleur, du type défini précédemment, lequel tube présente, avant déformation, une section transversale ayant une forme sensiblement homologue à celle du trou et comportant deux flancs longitudinaux en regard l'un de l'autre qui sont incurvés et ont leur convexité tournée vers l'intérieur du tube, en sorte que le tube présente une largeur extérieure restreinte dans une région o les flancs longitudinaux sont Indeed, for a tube that has a radius of curvature (in the rounded parts) identical before expansion and an equal width after expansion, it is preferable to use a fin hole and an oval tube because this tube has a aerodynamic resistance to air lower, and that for an inner section substantially equivalent to that of a tube after expansion as obtained by the aforementioned French patent. The object of the invention is in particular to overcome such disadvantages. It consequently proposes a tube for heat exchanger, of the type defined above, which tube has, before deformation, a cross section having a shape substantially homologous to that of the hole and having two longitudinal flanks facing each other which are curved and have their convexity turned towards the inside of the tube, so that the tube has a restricted outside width in a region where the longitudinal flanks are
les plus proches l'un de l'autre.closest to each other.
Ainsi, conformément à l'invention, la section transversale du tube, avant déformation, est sensiblement homologue à celle du trou de l'ailette et présente une forme analogue avec des flancs longitudinaux incurvés ayant une courbure de même sens Thus, according to the invention, the cross section of the tube, before deformation, is substantially homologous to that of the hole of the fin and has a similar shape with curved longitudinal flanks having a curvature of the same direction
que celle des parties longitudinales des bords des trous. than that of the longitudinal parts of the edges of the holes.
Ainsi, les flancs longitudinaux du tube et les parties longitudinales du trou ont des convexités de même sens, ce Thus, the longitudinal flanks of the tube and the longitudinal portions of the hole have convexities of the same direction;
qui n'était pas le cas de la technique antérieure. which was not the case of the prior art.
Il en résulte que le jeu compris entre le trou de l'ailette et le tube, notamment au niveau des parties arrondies et à As a result, the clearance between the hole of the fin and the tube, especially at the level of the rounded portions and at
faible rayon de courbure du tube, peut être faible, c'est-à- low radius of curvature of the tube, can be weak, that is,
dire égal au jeu minimal nécessaire à l'enfilage du tube dans equal to the minimum clearance necessary for threading the tube into
les trous des ailettes.the holes of the fins.
Lorsque le tube est ensuite déformé par expansion ou dilata- When the tube is subsequently deformed by expansion or expansion,
tion, il subit une faible striction, notamment à ses extrémi- tion, it suffers a slight narrowing, especially at its extremes.
tés arrondies à faible rayon de courbure, ce qui évite tout rounded tees with a small radius of curvature, which avoids
risque d'éclatement ultérieur du tube. risk of subsequent bursting of the tube.
Selon une autre caractéristique de l'invention, la section According to another characteristic of the invention, the section
transversale du tube avant déformation et la section trans- cross section of the tube before deformation and the trans-
versale du trou sont choisies telles qu'il existe un jeu d'épaisseur sensiblement constante entre le bord du trou et le tube avant déformation, et cela sur toute la périphérie du tube. Ce jeu d'épaisseur sensiblement constante correspond alors au jeu minimal nécessaire à l'enfilage du tube dans les trous Versale of the hole are chosen such that there is a set of substantially constant thickness between the edge of the hole and the tube before deformation, and this over the entire periphery of the tube. This game of substantially constant thickness then corresponds to the minimum clearance necessary for threading the tube into the holes
alignés des ailettes.aligned with the fins.
Selon une autre caractéristique de l'invention, les deux flancs longitudinaux incurvés du tube sont raccordés entre According to another characteristic of the invention, the two curved longitudinal flanks of the tube are connected between
eux par deux parties arrondies de forme sensiblement circu- two rounded parts of substantially circular shape
laire et de rayon choisi.selected radius and radius.
Ce rayon des extrémités arrondies est choisi tel que soit vérifiée la relation 2 < 2r, o 2 représente la largeur extérieure restreinte du tube avant déformation et r le rayon This radius of the rounded ends is chosen such that the relation 2 <2r is verified, where o 2 represents the restricted outer width of the tube before deformation and r the radius
des parties arrondies.rounded parts.
Cette caractéristique permet d'optimiser le jeu entre le tube This feature optimizes the play between the tube
et le trou de l'ailette et ainsi de réduire l'effort d'expan- and the hole of the fin and thus reduce the effort of expan-
sion et la striction du tube.sion and necking of the tube.
Selon une autre caractéristique de l'invention, le rayon r des extrémités arrondies est tel que soit vérifiée la relation r < 4e, o e désigne l'épaisseur de la paroi du tube According to another characteristic of the invention, the radius r of the rounded ends is such that the relation r <4e is verified, where e e is the thickness of the wall of the tube
avant déformation.before deformation.
Cette seconde caractéristique est la condition nécessaire pour que le tube à flancs longitudinaux incurvés vers l'intérieur ait un coefficient de convexion plus élevé que This second characteristic is the necessary condition for the longitudinally curved longitudinal sidewall tube to have a higher coefficient of convection than
celui d'un tube de section ovale ayant un rayon r minimal. that of a tube of oval section having a minimum radius r.
Sous un autre aspect, l'invention concerne un échangeur de chaleur qui comprend une multiplicité d'ailettes ayant des trous de section transversale oblongue telle que le bord du trou présente des parties longitudinales en regard l'un de l'autre, qui sont incurvés et ont leur convexité tournée vers l'intérieur du trou, ainsi qu'au moins un tube tel que défini précédemment, dont la paroi a été déformée sous pression de In another aspect, the invention relates to a heat exchanger which comprises a multiplicity of fins having holes of oblong cross-section such that the edge of the hole has longitudinal portions facing each other, which are curved. and have their convexity turned towards the inside of the hole, as well as at least one tube as defined previously, whose wall has been deformed under pressure from
manière à être appliquée contre les bords des trous. to be applied against the edges of the holes.
Dans la description qui suit, faite seulement à titre In the description that follows, made only as a
d'exemple, on se réfère au dessin annexé, sur lequel: - la figure 1 est une vue de face d'une partie d'ailette; - la figure 2 est une vue en section transversale d'un tube selon l'invention avant déformation; - la figure 3 est une vue analogue à celle de la figure 1 après enfilage du tube de la figure 2; - la figure 4 est une vue analogue à la figure 3 après déformation de la paroi du tube, par dilatation ou expansion pour réaliser l'assemblage entre le tube et les ailettes; et - la figure 5 est une vue partielle en coupe suivant la ligne for example, reference is made to the accompanying drawing, in which: - Figure 1 is a front view of a fin portion; - Figure 2 is a cross-sectional view of a tube according to the invention before deformation; - Figure 3 is a view similar to that of Figure 1 after threading the tube of Figure 2; - Figure 4 is a view similar to Figure 3 after deformation of the wall of the tube, by expansion or expansion to achieve the assembly between the tube and the fins; and - Figure 5 is a partial sectional view along the line
V-V de la figure 4.V-V of Figure 4.
On se réfère tout d'abord à la figure 1 qui montre une partie d'une ailette 10 de forme générale rectangulaire qui comporte une multiplicité de trous 12 qui, dans l'exemple, sont Referring first to Figure 1 which shows a portion of a fin 10 of generally rectangular shape which has a plurality of holes 12 which, in the example, are
disposés suivant une seule rangée. arranged in a single row.
Chacun des trous 12 possède une section transversale oblongue Each of the holes 12 has an oblong cross section
telle que le bord du trou présente deux parties longitudina- such that the edge of the hole has two longitudinal
les 14 situées en regard l'une de l'autre, qui sont incurvées the 14 facing each other, which are curved
et ont leur convexité tournée vers l'intérieur du trou. and have their convexity turned towards the inside of the hole.
Les deux parties longitudinales 14 sont raccordées par deux parties d'extrémité 16 de forme arrondie qui présentent un The two longitudinal portions 14 are connected by two end portions 16 of rounded shape which have a
rayon de courbure R de valeur choisie. radius of curvature R of chosen value.
Le trou 12 présente ainsi, dans la région o les deux parties longitudinales 14 sont le plus proches l'une de l'autre, une The hole 12 thus has, in the region where the two longitudinal portions 14 are closest to one another, a
largeur intérieure restreinte L qui est inférieure à 2R. restricted interior width L which is less than 2R.
Le trou 12 est bordé, sur tout son pourtour, par un collet 18 The hole 12 is bordered, all around, by a collar 18
de même forme.of the same shape.
On se réfère maintenant à la figure 2 qui représente un tube Referring now to Figure 2 which shows a tube
selon l'invention, avant déformation. according to the invention, before deformation.
Le tube 20 possède une section transversale oblongue de forme sensiblement homologue à celle du trou 12, mais de dimension inférieure pour permettre l'enfilage du tube 20, avant déformation, au travers des trous alignés d'une multiplicité The tube 20 has an oblong cross-section of a shape substantially homologous to that of the hole 12, but of smaller size to allow the tube 20 to be threaded, before deformation, through the aligned holes of a multiplicity
d'ailettes 10 disposées parallèlement entre elles. fins 10 arranged parallel to each other.
Le tube 20 est formé d'un métal ou alliage métallique déformable et il comporte deux flancs longitudinaux 22, disposés en regard l'un de l'autre, qui sont incurvés et ont leur convexité tournée vers l'intérieur du tube. Autrement dit, les flancs longitudinaux 22 ont une courbure de m-me The tube 20 is formed of a metal or deformable metal alloy and it comprises two longitudinal flanks 22, arranged opposite one another, which are curved and have their convexity turned towards the inside of the tube. In other words, the longitudinal flanks 22 have a curvature of m-me
sens que les parties longitudinales 14 du trou 12. meaning that the longitudinal portions 14 of the hole 12.
Les deux flancs 22 sont raccordés entre eux par deux parties incurvées 24 de forme circulaire présentant un rayon de courbure r qui est inférieur à R. Ainsi, dans la région o les deux flancs 22 sont les plus proches l'un de l'autre, le tube 20 présente une largeur The two flanks 22 are interconnected by two curved portions 24 of circular shape having a radius of curvature r which is less than R. Thus, in the region where the two flanks 22 are closest to each other, the tube 20 has a width
extérieure restreinte 2 telle que 2 < 2r. external restricted 2 such that 2 <2r.
Le tube 20 possède une paroi déformable 26 ayant une épais- The tube 20 has a deformable wall 26 having a thickness
seur e sensiblement constante.is substantially constant.
Comme on le voit sur la figure 3, la section transversale du trou 12 et la section transversale du tube 20 sont homologues et choisies de telle sorte qu'il existe un jeu j d'épaisseur sensiblement constante entre le bord du trou 12 et le tube 20 As seen in FIG. 3, the cross-section of the hole 12 and the cross section of the tube 20 are homologous and chosen so that there is a clearance j of substantially constant thickness between the edge of the hole 12 and the tube 20
avant déformation, et cela sur toute la périphérie du tube. before deformation, and this on the entire periphery of the tube.
Selon une première caractéristique du tube 20, celui-ci satisfait à la relation 2 < 2r, ce qui permet d'optimiser le jeu j entre le tube et le trou de l'ailette et de réduire l'effort d'expansion et la striction du tube lors de sa According to a first characteristic of the tube 20, it satisfies the relation 2 <2r, which makes it possible to optimize the clearance j between the tube and the hole of the fin and to reduce the expansion force and the necking of the tube during its
déformation ultérieure.subsequent deformation.
Le tube 20 satisfait également la relation r < 4e, o e désigne, comme déjà indiqué, l'épaisseur de la paroi 26 du The tube 20 also satisfies the relation r <4e, where e denotes, as already indicated, the thickness of the wall 26 of the
tube avant déformation.tube before deformation.
Cette seconde caractéristique est une condition nécessaire pour que le tube ait un coefficient de convexion plus élevé This second characteristic is a necessary condition for the tube to have a higher coefficient of convection
que celui d'un tube ovale de rayon r minimal. than that of an oval tube of minimum radius r.
On se réfère maintenant aux figures 4 et 5 pour décrire le procédé de fabrication d'un échangeur de chaleur selon l'invention. Pour réaliser un tel échangeur de chaleur, on part d'une multiplicité d'ailettes 10 disposées parallèlement entre elles, de telle sorte que leurs trous respectifs 12 soient Referring now to Figures 4 and 5 to describe the method of manufacturing a heat exchanger according to the invention. To achieve such a heat exchanger, we start from a multiplicity of fins 10 arranged parallel to each other, so that their respective holes 12 are
alignés, comme montré à la figure 5. aligned, as shown in Figure 5.
On part également d'au moins un tube 20 non déformé tel que We also start from at least one undeformed tube 20 such that
décrit précédemment.previously described.
Le tube 20 est ensuite enfilé au travers des trous 12 alignés des ailettes, par déplacement axial du tube dans la direction d'alignement des trous. Puis, le tube 20 est déformé par expansion ou dilatation, par exemple au moyen d'un outil du type "olive" (non représenté) introduit axialement dans le tube. Le tube est ainsi appliqué sous pression contre les bords des The tube 20 is then threaded through the aligned holes 12 of the fins, by axial displacement of the tube in the direction of alignment of the holes. Then, the tube 20 is deformed by expansion or expansion, for example by means of an "olive" type tool (not shown) introduced axially into the tube. The tube is thus applied under pressure against the edges of the
trous et contre les collets des trous. holes and against the necks of the holes.
La déformation du tube s'effectue uniformément sur toute sa périphérie, comme montré schématiquement par les flèches sur The deformation of the tube is uniformly distributed over its entire periphery, as shown schematically by the arrows on
la figure 4.Figure 4.
La paroi 26 du tube vient ainsi s'appliquer étroitement contre les collets des ailettes pour assurer l'assemblage du tube avec les ailettes et en même temps une bonne liaison The wall 26 of the tube is thus tightly applied against the flanges of the fins to ensure the assembly of the tube with the fins and at the same time a good connection
thermique entre eux.thermal between them.
Du fait que le jeu j entre le trou et le tube était sensible- Because the clearance between the hole and the tube was sensitive
ment constant sur toute la périphérie du tube, ce dernier subit une expansion uniforme d'o il résulte une faible striction, notamment au niveau des parties arrondies de sa section. L'invention convient tout particulièrement à la réalisation d'échangeurs de chaleur pour véhicules automobiles, en particulier de radiateurs de refroidissement du moteur ou de constant over the entire periphery of the tube, the latter undergoes a uniform expansion o o it results in a small necking, especially at the rounded portions of its section. The invention is particularly suitable for producing heat exchangers for motor vehicles, in particular engine cooling radiators or
radiateurs servant au chauffage de l'habitacle. radiators for heating the cabin.
Claims (6)
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR9408819A FR2722563B1 (en) | 1994-07-15 | 1994-07-15 | TUBE WITH LONG CROSS SECTION FOR HEAT EXCHANGER |
| EP95110946A EP0692692A1 (en) | 1994-07-15 | 1995-07-12 | Pipe having an oblong cross-section for heat exchanger |
| BR9503317A BR9503317A (en) | 1994-07-15 | 1995-07-14 | Tube for heat exchanger and heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR9408819A FR2722563B1 (en) | 1994-07-15 | 1994-07-15 | TUBE WITH LONG CROSS SECTION FOR HEAT EXCHANGER |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2722563A1 true FR2722563A1 (en) | 1996-01-19 |
| FR2722563B1 FR2722563B1 (en) | 1996-09-06 |
Family
ID=9465447
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR9408819A Expired - Lifetime FR2722563B1 (en) | 1994-07-15 | 1994-07-15 | TUBE WITH LONG CROSS SECTION FOR HEAT EXCHANGER |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP0692692A1 (en) |
| BR (1) | BR9503317A (en) |
| FR (1) | FR2722563B1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2866948A1 (en) | 2004-02-27 | 2005-09-02 | Valeo Thermique Moteur Sa | Heat exchanger e.g. heat radiator, for motor vehicle, has deviation plates of length selected such that their ends define deflector contour with convex portion complementary to concave portion of circumference of each hole of cooling fins |
| WO2016198664A1 (en) | 2015-06-12 | 2016-12-15 | Valeo Systemes Thermiques | Fin of a heat exchanger, notably for a motor vehicle, and corresponding heat exchanger |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2906355B1 (en) * | 2006-09-21 | 2009-02-27 | Valeo Systemes Thermiques | HEAT EXCHANGER TUBE, EXCHANGER COMPRISING SUCH A TUBE AND METHOD OF MANUFACTURING SUCH TUBE |
| FR2909912B1 (en) * | 2006-12-14 | 2012-08-31 | Valeo Systemes Thermiques | METHOD FOR PRODUCING A FIN IN A HEAT EXCHANGER, A FINISH OBTAINED BY SUCH A METHOD, AND A HEAT EXCHANGER COMPRISING SUCH AILET |
| FR2982663B1 (en) | 2011-11-10 | 2015-01-23 | Valeo Systemes Thermiques | METHOD OF MANUFACTURING A HEAT EXCHANGER AND HEAT EXCHANGER OBTAINED BY SAID METHOD, OLIVE AND DEVICE FOR EXPANSION OF TUBES FOR IMPLEMENTING SAID METHOD |
| DE102014206612A1 (en) * | 2014-04-04 | 2015-10-29 | Mahle International Gmbh | heat exchangers |
| CN104534897A (en) * | 2014-12-29 | 2015-04-22 | 浙江华森散热器制造有限公司 | Expansion pipe type car heat radiator |
| CN104864761A (en) * | 2015-06-10 | 2015-08-26 | 纳百川控股有限公司 | Pipeline of heat exchanger and heat exchanger |
| DE102017202475A1 (en) | 2017-02-16 | 2018-08-16 | Mahle International Gmbh | Bone-shaped heat exchanger tube in cross-section |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1502301A (en) * | 1922-09-06 | 1924-07-22 | Fedders Mfg Co Inc | Radiator |
| DE2030063A1 (en) * | 1969-06-18 | 1971-01-07 | S A. des Usmes Chausson, Asnieres, Hauts-de Seine (Frankreich) | Kuhlrohrbundel and process for its production |
| FR2380088A1 (en) * | 1977-02-10 | 1978-09-08 | Thermal Waerme Kaelte Klima | Sheet metal heat exchanger - has tubes of non-circular section secured to sheet by mandrel |
| FR2402850A1 (en) * | 1977-09-09 | 1979-04-06 | Ferodo Sa | FINNED TUBE DEVICE FOR A HEAT EXCHANGER, IN PARTICULAR FOR A MOTOR VEHICLE RADIATOR, AND THE MANUFACTURING PROCESS |
| FR2475709A1 (en) * | 1980-02-08 | 1981-08-14 | Chausson Usines Sa | TUBE FOR HEAT EXCHANGER AND EXCHANGER WITH COLLECTING PLATE AND MECHANICAL ASSEMBLY COMPRISING SUCH TUBE |
| US4327800A (en) * | 1979-09-24 | 1982-05-04 | Caterpillar Tractor Co. | Method of manufacturing heat exchanger core and assembly therefor |
| DE4343731A1 (en) * | 1992-12-24 | 1994-06-30 | Vaillant Joh Gmbh & Co | Method for fitting a pipe |
-
1994
- 1994-07-15 FR FR9408819A patent/FR2722563B1/en not_active Expired - Lifetime
-
1995
- 1995-07-12 EP EP95110946A patent/EP0692692A1/en not_active Withdrawn
- 1995-07-14 BR BR9503317A patent/BR9503317A/en not_active Application Discontinuation
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1502301A (en) * | 1922-09-06 | 1924-07-22 | Fedders Mfg Co Inc | Radiator |
| DE2030063A1 (en) * | 1969-06-18 | 1971-01-07 | S A. des Usmes Chausson, Asnieres, Hauts-de Seine (Frankreich) | Kuhlrohrbundel and process for its production |
| FR2380088A1 (en) * | 1977-02-10 | 1978-09-08 | Thermal Waerme Kaelte Klima | Sheet metal heat exchanger - has tubes of non-circular section secured to sheet by mandrel |
| FR2402850A1 (en) * | 1977-09-09 | 1979-04-06 | Ferodo Sa | FINNED TUBE DEVICE FOR A HEAT EXCHANGER, IN PARTICULAR FOR A MOTOR VEHICLE RADIATOR, AND THE MANUFACTURING PROCESS |
| US4327800A (en) * | 1979-09-24 | 1982-05-04 | Caterpillar Tractor Co. | Method of manufacturing heat exchanger core and assembly therefor |
| FR2475709A1 (en) * | 1980-02-08 | 1981-08-14 | Chausson Usines Sa | TUBE FOR HEAT EXCHANGER AND EXCHANGER WITH COLLECTING PLATE AND MECHANICAL ASSEMBLY COMPRISING SUCH TUBE |
| DE4343731A1 (en) * | 1992-12-24 | 1994-06-30 | Vaillant Joh Gmbh & Co | Method for fitting a pipe |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2866948A1 (en) | 2004-02-27 | 2005-09-02 | Valeo Thermique Moteur Sa | Heat exchanger e.g. heat radiator, for motor vehicle, has deviation plates of length selected such that their ends define deflector contour with convex portion complementary to concave portion of circumference of each hole of cooling fins |
| WO2016198664A1 (en) | 2015-06-12 | 2016-12-15 | Valeo Systemes Thermiques | Fin of a heat exchanger, notably for a motor vehicle, and corresponding heat exchanger |
Also Published As
| Publication number | Publication date |
|---|---|
| EP0692692A1 (en) | 1996-01-17 |
| FR2722563B1 (en) | 1996-09-06 |
| BR9503317A (en) | 1996-07-09 |
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