WO2008034748A1 - Fin for a heat exchanger, and heat exchanger comprising such a fin - Google Patents
Fin for a heat exchanger, and heat exchanger comprising such a fin Download PDFInfo
- Publication number
- WO2008034748A1 WO2008034748A1 PCT/EP2007/059574 EP2007059574W WO2008034748A1 WO 2008034748 A1 WO2008034748 A1 WO 2008034748A1 EP 2007059574 W EP2007059574 W EP 2007059574W WO 2008034748 A1 WO2008034748 A1 WO 2008034748A1
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- Prior art keywords
- fin
- width
- holes
- tubes
- heat exchanger
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- 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.)
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- 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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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F2275/00—Fastening; Joining
- F28F2275/12—Fastening; Joining by methods involving deformation of the elements
- F28F2275/125—Fastening; Joining by methods involving deformation of the elements by bringing elements together and expanding
Definitions
- the present invention relates to a fin for a heat exchanger.
- the invention finds a particularly advantageous application in the field of heat exchangers used in the automotive industry, such as engine cooling radiators and air conditioning evaporators.
- Heat exchangers for motor vehicles are known today consisting of a bundle of tubes arranged in parallel on one or more rows, these tubes being intended for the circulation through the exchanger of a coolant, such as water. added with glycol in the case of engine cooling radiators.
- a coolant such as water. added with glycol in the case of engine cooling radiators.
- the water cooling the engine components heats up and must in turn be cooled. It is the role of the radiator to perform this function.
- the water to be cooled is circulated in the tubes of the radiator and is cooled by heat exchange with air, the heat exchange being effected by means of heat exchange elements arranged between the tubes.
- the heat exchange elements are parallel fins traversed by the circulation tubes in holes in the fins.
- the assembly is held mechanically by crimping by means of a tool inserted inside the tubes so as to deform the walls of the tubes and forcefully apply them against the holes formed in the tubes.
- the heat transfer fluid glycoled water for example
- the air is produced, on the one hand, by conduction between the fins and the tubes, the effectiveness of the conduction being conditioned by the quality of the thermal contact between these two components, and on the other hand, by convection of the air circulating between the fins, the effectiveness of the convection being conditioned by the permeability of the tube bundle and the turbulence of the air.
- a fin has a central useful area having a plurality of holes for receiving the crimped circulation tubes. These holes are arranged along one or more rows, seion the bundle of tubes is mono-rank or multi-rank, parallel to a longitudinal direction, this direction corresponding to the large dimension of the fin.
- the width of said central zone is equal to the projection of the holes in a direction transverse to said longitudinal direction, the tubes and the holes of the fins being indeed oblong in shape with a major axis oriented at a given angle ⁇ relative to the transverse direction.
- the central zone also comprises, placed between two successive holes of the same row, baffle deflectors adapted to deflect the air entering laterally into the exchanger in the transverse direction, this in order to create turbulence in the flow favorable the efficiency of convective heat exchange.
- the connecting strands are also used to implement pins made by perforation fins, these pins to define the pitch of the fins together when stacked on top of each other.
- This dual function of the connecting strands implies that they must have a minimum width in the transverse direction, this width being added to the width of the central zone to define the total width of the fins.
- the width of a connecting strand can reach in these conditions several millimeters.
- the mechanical exchangers have the difficulty that it is not possible to have a fin of the same width as the major axis of the tube, or projection because only the connecting strand ensures the maintenance of the tubes and fins between them. Without this connecting strand, the crimping of the tubes in the fins becomes impossible.
- the invention aims to provide a fin heat exchanger that would obtain a specific exchange surface as large as possible for the fin while ensuring the optimal conditions for crimping the tubes. This object is achieved, according to the invention, by means of a fin for a heat exchanger, having:
- a central zone comprising a plurality of holes intended to receive a plurality of tubes, said holes being arranged along at least one. row parallel to a longitudinal direction, the width of the central zone being equal to the width of the projection of the holes in a transverse direction, perpendicular to the longitudinal direction,
- each connecting strand in the transverse direction is such that said connecting strand has a minimum crimping resistance for a crimping stress given.
- the amount of material involved in the connecting strands is reduced to a minimum, namely that required to crimp the tubes without breaking the connecting strands.
- the specific surface of the fin according to the invention is optimal.
- the width of the fins may be limited to lower values than in the state of the art for better use of the fin material.
- the width of the blades of the fin according to the invention is insufficient to support the realization of the pitch pins, they can be made at another location of the fin, for example in the central area at the louvered deflectors.
- the invention also has many other advantages.
- the width of the fins being reduced, the bundle of tubes is thinner and the heat exchanger less cumbersome.
- the resistance of the fins to impacts is improved because the connecting strands located on either side of the tubes are less flexible due to the reduction of their free length.
- Optimizing the surface of the fins by reducing the thickness of the beam through which the air passes improves the permeability of the exchanger. Indeed, the air pressure drop is reduced due to lower beam thickness. It is therefore possible to increase the density of the fins, which has the effect of increasing the thermal performance of the exchanger. We can thus obtain a performance equivalent to a thicker beam, and therefore less expensive with a lesser amount of material engaged fins.
- the invention also relates to a heat exchanger comprising at least one fin as described above.
- Figure 1 is a schematic top view of a plate according to the invention.
- FIG. 2 is a diagrammatic plan view of a variant of the plate of FIG. 1,
- FIG. 1 a fin 10 for a heat exchanger of the mechanical assembly type.
- This fin has a useful central zone Z having a plurality of holes 11 arranged along a row parallel to a longitudinal direction YY of the fin 10.
- the holes 11 are intended to receive tubes, not shown, of circulation of a heat transfer fluid.
- the holes 11 are shaped for so-called flat tubes whose length of the major axis is greater than the length of the minor axis. As a result, the holes 11 have a length greater than their width L. This arrangement makes it possible to place a larger number of tubes side by side than in the case of cylindrical tubes, with the advantage of improving the efficiency of the tube. exchanger.
- the central zone Z is bordered on both sides by lateral connecting strands, B1 and B2, which we have seen above that they did not play a determining role in thermal exchanges with the air flowing in the transverse direction XX and that, consequently, their width C could be limited to the mechanical connection between the holes 11.
- the total width A of the fin 10 is therefore: B + 2.C
- the fin must have a minimum width of 14 mm.
- the connecting strands B1, B2 must therefore have a minimum width C of 1 mm.
- the connecting strands are not strong enough to withstand the crimping force of the tubes and the heat exchange drops. We can therefore formulate a condition on the width A of the fins by the double inequality expressed in mm:
- FIG. 2 illustrates a variant in which the major axis of the tubes is inclined at an angle ⁇ with a transverse direction XX, perpendicular to the longitudinal direction YY, which makes it possible to increase the length B of the tubes for a better occupation of the surface of the plate 10.
- the width of the central zone 2 is equal to the projection of the holes 11 on the XX direction, B.cos ⁇ .
- width A of the blade is:
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Geometry (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
Description
AILETTE POUR ECHANGEUR DE CHALEUR ET ECHANGEUR DE CHALEUR COMPORTANT UNE TELLE AILETTE WING FOR HEAT EXCHANGER AND HEAT EXCHANGER COMPRISING SUCH AILT
La présente invention concerne une ailette pour échangeur de chaleur. L'invention trouve une application particulièrement avantageuse dans le domaine des échangeurs de chaleur utilisés dans l'industrie automobile, tels que les radiateurs de refroidissement des moteurs et les évaporateurs de climatisation.The present invention relates to a fin for a heat exchanger. The invention finds a particularly advantageous application in the field of heat exchangers used in the automotive industry, such as engine cooling radiators and air conditioning evaporators.
On connaît aujourd'hui des échangeurs de chaleur pour véhicules automobiles constitués par un faisceau de tubes disposés parallèlement sur une ou plusieurs rangées, ces tubes étant destinés à îa circuiation à travers l'échangeur d'un fluide caloporteur, tel que de l'eau additionnée de glycol dans ie cas des radiateurs de refroidissement de moteurs. L'eau en refroidissant les organes du moteur s'échauffe et doit à son tour être refroidie. C'est le rôle du radiateur d'assurer cette fonction. A cet effet, l'eau à refroidir est mise en circulation dans les tubes du radiateur et se refroidit par échange thermique avec de l'air, l'échange thermique étant réalisé par l'intermédiaire d'éléments d'échange de chaleur disposés entre les tubes.Heat exchangers for motor vehicles are known today consisting of a bundle of tubes arranged in parallel on one or more rows, these tubes being intended for the circulation through the exchanger of a coolant, such as water. added with glycol in the case of engine cooling radiators. The water cooling the engine components heats up and must in turn be cooled. It is the role of the radiator to perform this function. For this purpose, the water to be cooled is circulated in the tubes of the radiator and is cooled by heat exchange with air, the heat exchange being effected by means of heat exchange elements arranged between the tubes.
Pour les échangeurs de chaleur à assemblage mécanique, les éléments d'échange de chaleur sont des ailettes parallèles traversées par ies tubes de circulation dans des trous pratiqués dans les ailettes. Le maintien de l'ensemble est réalisé mécaniquement par sertissage au moyen d'un outil introduit à l'intérieur des tubes de manière à déformer les parois des tubes et les appliquer à force contre les trous ménagés dans les aïiettes, L'échange thermique entre le fluide caloporteur, eau glycolée par exemple, et l'air est réalisé, d'une part, par conduction entre les ailettes et les tubes, l'efficacité de la conduction étant conditionnée par la qualité du contact thermique entre ces deux composants, et, d'autre part, par convection de l'air circulant entre les ailettes, l'efficacité de la convection étant conditionnée par la perméabilité du faisceau de tubes et ia turbulence de l'air.For mechanically assembled heat exchangers, the heat exchange elements are parallel fins traversed by the circulation tubes in holes in the fins. The assembly is held mechanically by crimping by means of a tool inserted inside the tubes so as to deform the walls of the tubes and forcefully apply them against the holes formed in the tubes. the heat transfer fluid, glycoled water for example, and the air is produced, on the one hand, by conduction between the fins and the tubes, the effectiveness of the conduction being conditioned by the quality of the thermal contact between these two components, and on the other hand, by convection of the air circulating between the fins, the effectiveness of the convection being conditioned by the permeability of the tube bundle and the turbulence of the air.
Plus précisément, une ailette présente une zone utile centrale comportant une pluralité de trous destinés à recevoir les tubes de circulation sertis. Ces trous sont disposés le long d'une ou plusieurs rangées, seion que le faisceau de tubes est mono-rang ou multi-rang, parallèlement à une direction longitudinale, cette direction correspondant à la grande dimension de l'ailette. La largeur de ladite zone centrale est égaie à la projection des trous sur une direction transversale à ladite direction longitudinale, les tubes et les trous des ailettes pouvant en effet être de forme oblongue avec un grand axe orienté selon un angle θ donné par rapport à la direction transversale.More specifically, a fin has a central useful area having a plurality of holes for receiving the crimped circulation tubes. These holes are arranged along one or more rows, seion the bundle of tubes is mono-rank or multi-rank, parallel to a longitudinal direction, this direction corresponding to the large dimension of the fin. The width of said central zone is equal to the projection of the holes in a direction transverse to said longitudinal direction, the tubes and the holes of the fins being indeed oblong in shape with a major axis oriented at a given angle θ relative to the transverse direction.
La zone centrale comprend également, placés entre deux trous successifs d'une même rangée, des déflecteurs à persiennes aptes à dévier l'air pénétrant latéralement dans l'échangeur suivant la direction transversaie, ceci de manière à créer des turbulences dans l'écoulement favorables à l'efficacité de échanges thermiques par convection.The central zone also comprises, placed between two successive holes of the same row, baffle deflectors adapted to deflect the air entering laterally into the exchanger in the transverse direction, this in order to create turbulence in the flow favorable the efficiency of convective heat exchange.
De part et d'autre de la zone centrale utile, sont prévus sur les ailettes des brins de liaison pour assurer le maintien de la matière présente entre les trous de passage pour ies tubes de i'échangeur de chaleur et la cohésion mécanique des ailettes.On both sides of the useful central zone are provided on the fins of the connecting strands to ensure the maintenance of the material present between the passage holes for the heat exchanger tubes and the mechanical cohesion of the fins.
Les brins de liaison sont également utilisés pour implanter des picots réalisés par perforation des ailettes, ces picots permettant de définir le pas des ailettes entre elles lorsqu'elles sont empilées les unes sur les autres.The connecting strands are also used to implement pins made by perforation fins, these pins to define the pitch of the fins together when stacked on top of each other.
Cette double fonction des brins de liaison implique qu'ils doivent présenter une largeur minimale dans la direction transversale, cette largeur venant s'ajouter à la largeur de la zone centrale pour définir la largeur totale des ailettes. La largeur d'un brin de liaison peut atteindre dans ces conditions plusieurs millimètres.This dual function of the connecting strands implies that they must have a minimum width in the transverse direction, this width being added to the width of the central zone to define the total width of the fins. The width of a connecting strand can reach in these conditions several millimeters.
Or, le demandeur a pu montrer que toute la matière d'ailette engagée pour réaliser l'échange de chaleur ne participe pas complètement à la fonction d'échange thermique entre ies tubes de circulation du fluide caloporteur et l'air traversant le faisceau de tubes.However, the applicant has been able to show that all the fin material engaged to carry out the heat exchange does not fully participate in the heat exchange function between the heat transfer fluid circulation tubes and the air passing through the bundle of tubes. .
Par ailleurs, les échangeurs mécaniques présentent la difficulté qu'il n'est pas possible d'avoir une ailette de même largeur que le grand axe du tube, ou sa projection car seul le brin de liaison assure le maintien des tubes et des ailette entre eux. Sans ce brin de liaison, le sertissage des tubes dans ies ailettes devient impossible. Aussi, l'invention a pour but de proposer une ailette pour échangeur de chaleur qui permettrait d'obtenir une surface d'échange spécifique la plus grande possible pour l'ailette tout en garantissant les conditions optimales pour le sertissage des tubes. Ce but est atteint, conformément à l'invention, au moyen d'une ailette pour échangeur de chaleur, présentant :Furthermore, the mechanical exchangers have the difficulty that it is not possible to have a fin of the same width as the major axis of the tube, or projection because only the connecting strand ensures the maintenance of the tubes and fins between them. Without this connecting strand, the crimping of the tubes in the fins becomes impossible. Also, the invention aims to provide a fin heat exchanger that would obtain a specific exchange surface as large as possible for the fin while ensuring the optimal conditions for crimping the tubes. This object is achieved, according to the invention, by means of a fin for a heat exchanger, having:
- une zone centrale comportant une pluralité de trous destinés à recevoir une pluralité de tubes, lesdits trous étant disposés le long d'au moins une. rangée parallèlement à une direction longitudinale, la largeur de la zone centrale étant égale à la largeur de la projection des trous sur une direction transversale, perpendiculaire à la direction longitudinale,a central zone comprising a plurality of holes intended to receive a plurality of tubes, said holes being arranged along at least one. row parallel to a longitudinal direction, the width of the central zone being equal to the width of the projection of the holes in a transverse direction, perpendicular to the longitudinal direction,
- deux brins de liaison latéraux de part et d'autre de la zone centrale, remarquabie en ce que la largeur de chaque brin de liaison dans la direction transversale est telle que ledit brin de liaison présente une résistance minimale au sertissage pour une contrainte de sertissage donnée.two lateral connecting strands on either side of the central zone, remarkable in that the width of each connecting strand in the transverse direction is such that said connecting strand has a minimum crimping resistance for a crimping stress given.
Ainsi, la quantité de matière impliquée dans les brins de liaison est réduite au minimum, à savoir celle nécessaire pour réaliser Ie sertissage des tubes sans rupture des brins de liaison. Dans ces conditions, la surface spécifique de l'ailette conforme à l'invention est optimale. !l en résulte que la largeur des ailettes peut être limitée à des valeurs plus faibles que dans l'état de Ia technique pour une meilleure utilisation de la matière constituant l'ailette.Thus, the amount of material involved in the connecting strands is reduced to a minimum, namely that required to crimp the tubes without breaking the connecting strands. Under these conditions, the specific surface of the fin according to the invention is optimal. As a result, the width of the fins may be limited to lower values than in the state of the art for better use of the fin material.
Au besoin, si la largeur des brins de l'ailette conforme à l'invention est insuffisante pour supporter la réalisation des picots de pas, ces derniers peuvent être pratiqués à un autre endroit de l'ailette, par exemple dans la zone centrale au niveau des déflecteurs à persiennes.If necessary, if the width of the blades of the fin according to the invention is insufficient to support the realization of the pitch pins, they can be made at another location of the fin, for example in the central area at the louvered deflectors.
L'invention présente en outre bien d'autres avantages. La largeur des ailettes étant diminuée, le faisceau de tubes est moins épais et l'échangeur de chaleur moins encombrant.The invention also has many other advantages. The width of the fins being reduced, the bundle of tubes is thinner and the heat exchanger less cumbersome.
La résistance des ailettes aux impacts est améliorée car les brins de liaison situés de part et d'autre des tubes sont moins flexibles du fait de Ia réduction de leur longueur libre.The resistance of the fins to impacts is improved because the connecting strands located on either side of the tubes are less flexible due to the reduction of their free length.
L'optimisation de la surface des ailettes par réduction de l'épaisseur de faisceau traversée par l'air améliore la perméabilité de l'échangeur. En effet, la perte de charge de l'air est diminuée grâce à une épaisseur de faisceau moindre. Il est donc possible d'augmenter la densité des ailettes, ce qui a pour conséquence d'augmenter la performance thermique de Péchangeur. On peut donc ainsi obtenir une performance équivalente à un faisceau plus épais, et par conséquent, moins cher avec une quantité moindre de matière engagée pour les ailettes.Optimizing the surface of the fins by reducing the thickness of the beam through which the air passes improves the permeability of the exchanger. Indeed, the air pressure drop is reduced due to lower beam thickness. It is therefore possible to increase the density of the fins, which has the effect of increasing the thermal performance of the exchanger. We can thus obtain a performance equivalent to a thicker beam, and therefore less expensive with a lesser amount of material engaged fins.
L'invention concerne aussi un échangeur de chaleur comportant au moins une ailette telle que décrite précédemment.The invention also relates to a heat exchanger comprising at least one fin as described above.
La description qui va suivre en regard des dessins annexés, donnés à titre d'exemples non limitatifs, fera bien comprendre en quoi consiste ['invention et comment elle peut être réalisée.The following description with reference to the accompanying drawings, given as non-limiting examples, will make it clear what the invention is and how it can be achieved.
La figure 1 est une vue de dessus schématique d'une aiiette conforme à l'invention.Figure 1 is a schematic top view of a plate according to the invention.
La figure 2 est une vue de dessus schématique d'une variante de l'aiiette de la figure 1 ,FIG. 2 is a diagrammatic plan view of a variant of the plate of FIG. 1,
Sur la figure 1 est montrée une ailette 10 pour un échangeur de chaleur du type à assemblage mécanique. Cette ailette présente une zone centrale utile Z comportant une pluralité de trous 11 disposés le long d'une rangée parallèlement à une direction longitudinale Y-Y de l'ailette 10. Les trous 11 sont destinés à recevoir des tubes, non représentés, de circulation d'un fluide caloporteur.In Figure 1 is shown a fin 10 for a heat exchanger of the mechanical assembly type. This fin has a useful central zone Z having a plurality of holes 11 arranged along a row parallel to a longitudinal direction YY of the fin 10. The holes 11 are intended to receive tubes, not shown, of circulation of a heat transfer fluid.
Dans l'exemple de la figure 1 , les trous 11 sont conformés pour des tubes dits plats dont la longueur du grand axe est supérieure à la longueur du petit axe. En conséquence, les trous 11 ont une iongueur B supérieure à leur largeur L, Cette disposition permet de placer côte à côte un plus grand nombre de tubes que dans !e cas de tubes cylindriques, avec l'avantage d'améliorer le rendement de l'échangeur.In the example of Figure 1, the holes 11 are shaped for so-called flat tubes whose length of the major axis is greater than the length of the minor axis. As a result, the holes 11 have a length greater than their width L. This arrangement makes it possible to place a larger number of tubes side by side than in the case of cylindrical tubes, with the advantage of improving the efficiency of the tube. exchanger.
Comme le montre la figure 1 , la zone centrale Z est bordée de part et d'autre par des brins de liaison latéraux, B1 et B2, dont on a vu plus haut qu'ils ne jouaient pas un rôle déterminant dans les échanges thermiques avec l'air circulant dans la direction transversale X-X et que, par conséquent, leur largeur C pouvait être limitée à la liaison mécanique entre les trous 11.As shown in Figure 1, the central zone Z is bordered on both sides by lateral connecting strands, B1 and B2, which we have seen above that they did not play a determining role in thermal exchanges with the air flowing in the transverse direction XX and that, consequently, their width C could be limited to the mechanical connection between the holes 11.
La largeur totale A de l'ailette 10 vaut donc : B + 2.CThe total width A of the fin 10 is therefore: B + 2.C
On a pu ainsi constater que pour un tube de longueur 12 mm de grand axe et une contrainte de sertissage de 150 Mpa par exemple, i'ailette doit avoir au minimum une largeur de 14 mm. Dans ce cas, les brins de liaison B1 , B2 doivent donc avoir une largeur minimale C de 1 mm. En deçà de cette valeur, les brins de liaison ne sont pas assez résistants pour supporter l'effort de sertissage des tubes et l'échange de chaleur chute. On peut donc formuler une condition sur la largeur A des ailettes par la double inégalité exprimée en mm :It has thus been found that for a tube of length 12 mm long axis and a crimp stress of 150 Mpa for example, the fin must have a minimum width of 14 mm. In this case, the connecting strands B1, B2 must therefore have a minimum width C of 1 mm. Below this value, the connecting strands are not strong enough to withstand the crimping force of the tubes and the heat exchange drops. We can therefore formulate a condition on the width A of the fins by the double inequality expressed in mm:
8 + 1 < A < B + 38 + 1 <A <B + 3
Autrement dit, la largeur (C) de chaque brin (B1 , B2) de liaison vérifie la double inégalité exprimée en mm ;In other words, the width (C) of each connecting strand (B1, B2) satisfies the double inequality expressed in mm;
0,5 < C < 1 ,50.5 <C <1, 5
La figure 2 illustre une variante dans laquelle le grand axe des tubes est incliné selon un angle θ avec !a direction transversale X-X, perpendiculaire à la direction longitudinale Y-Y, ce qui permet d'augmenter la longueur B des tubes pour une meiileure occupation de la surface de l'aiiette 10. La largeur de la zone centrale 2 est donc égale à la projection des trous 11 sur la direction X-X, soit B.cosθ.FIG. 2 illustrates a variant in which the major axis of the tubes is inclined at an angle θ with a transverse direction XX, perpendicular to the longitudinal direction YY, which makes it possible to increase the length B of the tubes for a better occupation of the surface of the plate 10. The width of the central zone 2 is equal to the projection of the holes 11 on the XX direction, B.cosθ.
Dans ce cas la largeur A de l'ailette vaut :In this case the width A of the blade is:
B.cosθ + 2.CB.cosθ + 2.C
La condition d'optimisation sur la largeur A des ailettes s'exprime alors sous la forme suivante:The optimization condition on the width A of the fins is then expressed in the following form:
B.cόsθ + 1 < A ≤ B.cosθ + 3 En conclusion, l'optimisation de la largeur des ailettes est obtenue en réduisant les zones latérales de faible échange thermique, tout en conservant un lien de matière minimal pour permettre le sertissage des tubes, ceci dans le cadre des échangeurs de chaleur à assemblage mécanique. B.cόsθ + 1 <A ≤ B.cosθ + 3 In conclusion, the optimization of the width of the fins is obtained by reducing the lateral zones of low heat exchange, while maintaining a minimum material connection to allow the crimping of the tubes, this in the context of mechanical assembly heat exchangers.
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR06/08234 | 2006-09-19 | ||
| FR0608234A FR2906019B1 (en) | 2006-09-19 | 2006-09-19 | WING FOR HEAT EXCHANGER AND HEAT EXCHANGER HAVING SUCH AILT. |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2008034748A1 true WO2008034748A1 (en) | 2008-03-27 |
Family
ID=37897278
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/EP2007/059574 Ceased WO2008034748A1 (en) | 2006-09-19 | 2007-09-12 | Fin for a heat exchanger, and heat exchanger comprising such a fin |
Country Status (2)
| Country | Link |
|---|---|
| FR (1) | FR2906019B1 (en) |
| WO (1) | WO2008034748A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR3064733A1 (en) * | 2017-04-03 | 2018-10-05 | Valeo Systemes Thermiques | EVAPORATOR FOR AIR CONDITIONING INSTALLATION |
| FR3065519A1 (en) * | 2017-04-21 | 2018-10-26 | Valeo Systemes Thermiques | EVAPORATOR FOR AIR CONDITIONING INSTALLATION |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1497935A (en) * | 1974-04-25 | 1978-01-12 | Chausson Usines Sa | Heat-exchangers cores each with a single row of tubes |
| GB2003762A (en) * | 1977-09-09 | 1979-03-21 | Ferodo Sa | Fin and tube assemblies |
| WO1980001104A1 (en) * | 1978-11-24 | 1980-05-29 | Caterpillar Tractor Co | Heat exchanger having inclined tubes |
| US4570317A (en) * | 1985-01-18 | 1986-02-18 | Ford Motor Company | Method of attaching a tube to a fin |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3191673A (en) * | 1962-04-25 | 1965-06-29 | Young Radiator Co | Sectionalized heat-exchanger core-unit |
| GB1313974A (en) * | 1971-05-11 | 1973-04-18 | Hutogepgyar | Tubular heat exchanger and a method for the production thereof |
| AU2003262034A1 (en) * | 2002-09-10 | 2004-04-30 | Gac Corporation | Heat exchanger and method of producing the same |
| DE102005032812A1 (en) * | 2004-07-12 | 2006-02-02 | Behr Gmbh & Co. Kg | Heat exchanger e.g. for motor vehicles, has soldered block having flat tubes and ribs with first medium flowing through flat tubes which communicate with collecting tank |
-
2006
- 2006-09-19 FR FR0608234A patent/FR2906019B1/en not_active Expired - Fee Related
-
2007
- 2007-09-12 WO PCT/EP2007/059574 patent/WO2008034748A1/en not_active Ceased
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1497935A (en) * | 1974-04-25 | 1978-01-12 | Chausson Usines Sa | Heat-exchangers cores each with a single row of tubes |
| GB2003762A (en) * | 1977-09-09 | 1979-03-21 | Ferodo Sa | Fin and tube assemblies |
| WO1980001104A1 (en) * | 1978-11-24 | 1980-05-29 | Caterpillar Tractor Co | Heat exchanger having inclined tubes |
| US4570317A (en) * | 1985-01-18 | 1986-02-18 | Ford Motor Company | Method of attaching a tube to a fin |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2906019A1 (en) | 2008-03-21 |
| FR2906019B1 (en) | 2008-12-05 |
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