FR2757258A1 - Flat multi=channel tube for heat exchanger - Google Patents
Flat multi=channel tube for heat exchanger Download PDFInfo
- Publication number
- FR2757258A1 FR2757258A1 FR9615291A FR9615291A FR2757258A1 FR 2757258 A1 FR2757258 A1 FR 2757258A1 FR 9615291 A FR9615291 A FR 9615291A FR 9615291 A FR9615291 A FR 9615291A FR 2757258 A1 FR2757258 A1 FR 2757258A1
- Authority
- FR
- France
- Prior art keywords
- strip
- regions
- intermediate partitions
- tube
- width
- 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
-
- 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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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
Description
Tube plat à plusieurs canaux pour échangeur de chaleur
L'invention concerne un tube plat à canaux multiples pour la circulation d'un fluide dans un échangeur de chaleur, constitué à partir d'une bande de tôle qui est divisée dans sa largeur, par pliage selon sa direction longitudinale, en une multiplicité de régions qui forment des première et seconde parois principales opposées, sensiblement planes et parallèles, reliées entre elles par deux parois terminales de façon à définir un profil fermé allongé dans une direction latérale, et par au moins deux cloisons intermédiaires qui délimitent entre elles, et avec les parois terminales, des canaux mutuellement alignés dans ladite direction latérale et adjacents chacun aux deux parois principales, chacune desdites cloisons intermédiaires étant formée par deux régions de la bande mutuellement accolées, s'étendant sur toute l'épaisseur intérieure du tube et se raccordant directement sensiblement à angle droit, respectivement, à deux autres régions qui forment des portions d'une même paroi principale se faisant suite dans ladite direction latérale.Multi-channel flat tube for heat exchanger
The invention relates to a flat multi-channel tube for the circulation of a fluid in a heat exchanger, formed from a sheet metal strip which is divided in its width, by bending in its longitudinal direction, in a multiplicity of regions which form opposite first and second main walls, substantially planar and parallel, interconnected by two end walls so as to define a closed profile elongated in a lateral direction, and by at least two intermediate partitions which delimit between them, and with the end walls, channels mutually aligned in said lateral direction and each adjacent to the two main walls, each of said intermediate partitions being formed by two regions of the mutually joined strip, extending over the entire internal thickness of the tube and connecting directly substantially at right angles, respectively, to two other regions which form portions of the same main wall following in said lateral direction.
De tels tubes sont utilisés pour transporter un fluide caloporteur d'une boîte à fluide à une autre dans des échangeurs de chaleur, notamment des condenseurs de fluide réfrigérant ou des refroidisseurs d'air employés dans les véhicules automobiles respectivement pour la climatisation de l'habitacle et pour l'alimentation en air du moteur. L'étant chéité entre l'intérieur et l'extérieur du tube, et entre les différents canaux, est habituellement assurée par brasage, grâce à la fusion, après mise en forme du tube, d'un matériau de brasage recouvrant les deux faces de la bande.Such tubes are used to transport a heat transfer fluid from one fluid box to another in heat exchangers, in particular coolant condensers or air coolers used in motor vehicles respectively for the air conditioning of the passenger compartment. and for the engine air supply. Being chewed between the inside and outside of the tube, and between the different channels, is usually ensured by brazing, thanks to the fusion, after shaping the tube, of a brazing material covering the two faces of the band.
Un tube de ce genre est connu par EP-A-457 470. Dans ce tube connu, les deux régions de la bande formant chaque cloison intermédiaire sont des régions consécutives de la largeur de la bande, pliées sensiblement à 180 l'une par rapport à l'autre selon un profil en forme de U. Les deux branches du
U se raccordent à deux autres régions de la largeur de la bande qui forment des portions d'une même paroi principale, le fond du U s'appuyant sur la face interne de l'autre paroi principale. Les U des différentes cloisons intermédiaires sont tournés alternativement dans les deux sens opposés, c'est-à-dire que la paroi principale à laquelle appartiennent les régions se raccordant aux branches du U d'une cloison est celle sur laquelle s'appuie le fond du U de la cloison voisine, et inversement. Pour réaliser ce tube, on plie à 180 ", en formant l'une des parois terminales, la bande dans laquelle on a déjà formé par plissement les cloisons intermédiaires, disposées à un pas double de celui selon lesquels elles doivent se succéder dans le tube terminé. Toute imprécision dans le pliage de la bande ainsi plissée se traduira par une inégalité de la largeur des différents canaux.A tube of this kind is known from EP-A-457 470. In this known tube, the two regions of the strip forming each intermediate partition are consecutive regions of the width of the strip, folded substantially at 180 relative to one another. to the other in a U-shaped profile. The two branches of the
U are connected to two other regions of the width of the strip which form portions of the same main wall, the bottom of the U resting on the internal face of the other main wall. The U of the different intermediate partitions are rotated alternately in two opposite directions, that is to say that the main wall to which the regions connecting to the branches of the U of a partition belong is that on which the bottom rests. from the U of the neighboring partition, and vice versa. To make this tube, one folds 180 ", forming one of the end walls, the strip in which the intermediate partitions have already been formed by folding, arranged at a pitch double that according to which they must succeed one another in the tube Any inaccuracies in the folding of the pleated strip will result in uneven width of the different channels.
Le but de l'invention est de remédier à cet inconvénient.The object of the invention is to remedy this drawback.
L'invention vise notamment un tube du genre défini en introduction, et prévoit que, pour l'ensemble des cloisons intermédiaires, lesdites autres régions appartiennent à une même paroi principale.The invention relates in particular to a tube of the kind defined in the introduction, and provides that, for all of the intermediate partitions, said other regions belong to the same main wall.
La largeur des canaux est ainsi définie avec précision par la formation des plis entre les régions formant les cloisons intermédiaires et les régions adjacentes de la largeur de la bande.The width of the channels is thus precisely defined by the formation of folds between the regions forming the intermediate partitions and the adjacent regions of the width of the strip.
Des caractéristiques optionnelles de l'invention, complémentaires ou alternatives, sont énoncées ci-après: - L'une au moins des cloisons intermédiaires est formée par deux régions consécutives de la largeur de la bande, pliées sensiblement à 180 l'une par rapport à l'autre.Optional, complementary or alternative characteristics of the invention are set out below: - At least one of the intermediate partitions is formed by two consecutive regions of the width of the strip, folded substantially at 180 one with respect to the other.
- Chacune des cloisons intermédiaires est formée par deux régions consécutives de la largeur de la bande, et les deux tranches latérales de la bande sont jointes bord à bord au niveau de l'une des parois principales et terminales. - Each of the intermediate partitions is formed by two consecutive regions of the width of the strip, and the two lateral edges of the strip are joined edge to edge at one of the main and end walls.
- L'une des cloisons intermédiaires est formée par deux régions marginales de la largeur de la bande.- One of the intermediate partitions is formed by two marginal regions of the width of the strip.
Les caractéristiques et avantages de l'invention seront exposés plus en détail dans la description ci-après, en se référant aux dessins annexés, sur lesquels les figures 1 et 2 sont des vues en coupe transversale de deux tubes selon l'invention.The characteristics and advantages of the invention will be explained in more detail in the description below, with reference to the accompanying drawings, in which Figures 1 and 2 are cross-sectional views of two tubes according to the invention.
Chacune des figures représente un tube plat 1 à canaux multiples réalisé à partir d'une bande de tôle en alliage d'aluminium ayant initialement une section droite rectiligne et présentant des tranches latérales opposées 2 et 3. Cette bande est pliée ou courbée selon des génératrices parallèles à sa direction longitudinale pour former un tube ayant un profil allongé dans une direction latérale, orientée horizontalement sur les figures. Le tube 1 est délimité par des parois principales supérieure et inférieure 4 et 5, sensiblement planes et parallèles, raccordées entre elles par des parois latérales droite et gauche 6, 7 ayant une convexité tournée vers l'extérieur.Each of the figures represents a flat tube 1 with multiple channels produced from a strip of aluminum alloy sheet having initially a straight rectilinear section and having opposite lateral sections 2 and 3. This strip is folded or curved according to generatrices parallel to its longitudinal direction to form a tube having an elongated profile in a lateral direction, oriented horizontally in the figures. The tube 1 is delimited by upper and lower main walls 4 and 5, substantially flat and parallel, connected together by right and left side walls 6, 7 having a convexity facing outwards.
Le tube 1 représenté à la figure 1 a une configuration symétrique par rapport à un plan P perpendiculaire aux plans des parois principales 4 et 5. La paroi supérieure 4 est formée par une région médiane unique 8 de la bande initiale.The tube 1 shown in Figure 1 has a symmetrical configuration with respect to a plane P perpendicular to the planes of the main walls 4 and 5. The upper wall 4 is formed by a single median region 8 of the initial strip.
En allant de la région 8 vers la tranche 2 de cette bande, on trouve successivement une région 9 incurvée selon un profil sensiblement en demi-cercle pour former la paroi terminale 6, puis une région plane 10 formant une portion marginale de la paroi inférieure 5. La région 10 est suivie de deux régions 11 et 12 définissant respectivement les deux branches du profil en U d'une cloison intermédiaire. Les portions 11 et 12 se raccordent respectivement, par des arrondis sensiblement en quart de cercle, à la région 10 et à une région 13 formant une autre portion de la paroi 5, cette dernière portion se raccordant de la même façon à une région marginale 14 adjacente au plan P et s'étendant, parallèlement à celuici, jusqu'à la face interne de la paroi 4 avec laquelle elle est en contact par la tranche 2. Le fond 15 du profil en U formé par les régions 11 et 12 est également en contact avec la face interne de la paroi 4. La région 14 et la région marginale opposée 16 de la bande, qui est disposée symétriquement de la région 14 par rapport au plan P et lui est accolée, forment une seconde cloison intermédiaire. Une troisième cloison intermédiaire est formée par des régions 17 et 18 de la bande, symétriques des régions 11 et 12 respectivement. Quatre canaux 19 sont délimités par les deux parois terminales et les trois cloisons intermédiaires.Going from region 8 towards edge 2 of this strip, there is successively a region 9 curved according to a profile substantially in a semicircle to form the end wall 6, then a planar region 10 forming a marginal portion of the bottom wall 5 Region 10 is followed by two regions 11 and 12 respectively defining the two branches of the U-shaped profile of an intermediate partition. The portions 11 and 12 are connected respectively, by roundings substantially in a quarter of a circle, to the region 10 and to a region 13 forming another portion of the wall 5, this latter portion connecting in the same way to a marginal region 14 adjacent to the plane P and extending, parallel to it, up to the internal face of the wall 4 with which it is in contact by the edge 2. The bottom 15 of the U-shaped profile formed by the regions 11 and 12 is also in contact with the internal face of the wall 4. The region 14 and the opposite marginal region 16 of the strip, which is arranged symmetrically with the region 14 with respect to the plane P and is joined thereto, form a second intermediate partition. A third intermediate partition is formed by regions 17 and 18 of the strip, symmetrical with regions 11 and 12 respectively. Four channels 19 are delimited by the two end walls and the three intermediate partitions.
Dans le tube de la figure 2, la paroi principale supérieure 4 est également formée par une région continue 30, plane, de la largeur de la bande initiale, cette région 30 se raccordant directement à une région marginale 31 limitée par la tranche 2 et incurvée selon un profil sensiblement en quart de cercle pour former la moitié supérieure de la paroi terminale 7. La région marginale opposée 32, limitée par la tranche 3, est incurvée de la même manière pour former la moitié inférieure de la paroi terminale 7. La région 30 se raccorde vers la gauche à une région 33 semblable à la région 9 de la figure 1, qui forme la paroi terminale 6. Enfin, les régions comprises entre la région 32 et la région 33 dans la largeur de la bande forment d'une part la paroi principale inférieure 5, d'autre part cinq cloisons intermédiaires semblables à celles formées par les régions 11 et 12 et par les régions 17 et 18 de la figure 1. Plus précisément, les régions 32 et 33 se raccordent directement à des régions 34 et 35 respectivement qui forment des portions marginales de la paroi 5. Cette dernière est complétée par des portions intermédiaires formées par quatre régions 36 de la largeur de la bande, dont chacune se raccorde à deux régions 37, 38 appartenant respectivement à deux cloisons intermédiaires voisines. Les régions 36 d'une part, les cloisons intermédiaires d'autre part, sont toutes identiques entre elles, de sorte que ces dernières délimitent quatre canaux intermédiaires 39 identiques entre eux. Deux canaux latéraux 40 sont délimités chacun par l'une des cloisons intermédiaires et par l'une des parois terminales 6 et 7. In the tube of Figure 2, the upper main wall 4 is also formed by a continuous region 30, planar, the width of the initial strip, this region 30 connecting directly to a marginal region 31 limited by the edge 2 and curved according to a profile substantially in a quarter circle to form the upper half of the end wall 7. The opposite marginal region 32, limited by the edge 3, is curved in the same way to form the lower half of the end wall 7. The region 30 is connected to the left to a region 33 similar to region 9 of FIG. 1, which forms the end wall 6. Finally, the regions comprised between region 32 and region 33 in the width of the strip form in a share the lower main wall 5, on the other hand five intermediate partitions similar to those formed by regions 11 and 12 and by regions 17 and 18 of FIG. 1. More precisely, regions 32 and 33 are connected directly to regions 34 and 35 respectively which form marginal portions of the wall 5. The latter is completed by intermediate portions formed by four regions 36 of the width of the strip, each of which connects to two regions 37, 38 belonging respectively to two neighboring intermediate partitions. The regions 36 on the one hand, the intermediate partitions on the other hand, are all identical to each other, so that the latter delimit four intermediate channels 39 which are identical to each other. Two lateral channels 40 are each delimited by one of the intermediate partitions and by one of the end walls 6 and 7.
Dans le mode de réalisation de la figure 2, les tranches 2 et 3 de la bande sont assemblées bord à bord au niveau de l'une des parois terminales du tube. En variante, cette jonction pourrait être effectuée au niveau de la paroi supérieure 4, ou au niveau de la paroi inférieure 5, entre deux cloisons intermédiaires voisines.In the embodiment of Figure 2, the edges 2 and 3 of the strip are assembled edge to edge at one of the end walls of the tube. As a variant, this junction could be carried out at the level of the upper wall 4, or at the level of the lower wall 5, between two adjacent intermediate partitions.
Dans les différentes formes de réalisation de l'invention, l'étanchéité entre l'intérieur et l'extérieur du tube, et entre les différents canaux, est assurée par brasage, grâce à la fusion, après mise en forme du tube, d'un matériau de brasage recouvrant les deux faces de la bande. In the various embodiments of the invention, the seal between the inside and the outside of the tube, and between the different channels, is ensured by brazing, by melting, after shaping the tube, of a brazing material covering the two faces of the strip.
Claims (4)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR9615291A FR2757258B1 (en) | 1996-12-12 | 1996-12-12 | MULTI-CHANNEL FLAT TUBE FOR HEAT EXCHANGER |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR9615291A FR2757258B1 (en) | 1996-12-12 | 1996-12-12 | MULTI-CHANNEL FLAT TUBE FOR HEAT EXCHANGER |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2757258A1 true FR2757258A1 (en) | 1998-06-19 |
| FR2757258B1 FR2757258B1 (en) | 1999-03-05 |
Family
ID=9498607
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR9615291A Expired - Lifetime FR2757258B1 (en) | 1996-12-12 | 1996-12-12 | MULTI-CHANNEL FLAT TUBE FOR HEAT EXCHANGER |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR2757258B1 (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0854342A2 (en) * | 1997-01-20 | 1998-07-22 | Zexel Corporation | Tubes for heat exchanger |
| DE29906337U1 (en) | 1999-04-09 | 1999-07-01 | Behr Gmbh & Co, 70469 Stuttgart | Heat exchangers, in particular condensers for automotive air conditioning systems |
| FR2810727A1 (en) * | 2000-06-21 | 2001-12-28 | Valeo Thermique Moteur Sa | Heat exchanger tube for car radiator comprises metal strip which is bent over to form edges with space between, tube being folded inwards to form groove into which brazing flux is introduced |
| EP1060808A3 (en) * | 1999-06-18 | 2002-01-02 | Valeo Engine Cooling Aktiebolag | Fluid conveying tube as well as method and device for manufacturing the same |
| US6513582B2 (en) * | 2000-07-11 | 2003-02-04 | Delphi Technologies, Inc. | Heat exchanger and fluid pipe therefor |
| WO2003060412A3 (en) * | 2002-01-17 | 2003-12-24 | Behr Gmbh & Co | Welded multi-chamber tube |
| US6935418B1 (en) | 1999-06-18 | 2005-08-30 | Valeo Engine Cooling Ab | Fluid conveying tube and vehicle cooler provided therewith |
| CN103711997A (en) * | 2013-12-31 | 2014-04-09 | 南宁八菱科技股份有限公司 | Variation B-shaped multi-channel self-brazing cooling pipe |
| EP3190372A1 (en) | 2016-01-08 | 2017-07-12 | Mahle International GmbH | Flat tube for a heat exchanger |
| CN109579597A (en) * | 2018-12-04 | 2019-04-05 | 南宁市安和机械设备有限公司 | A kind of porous microchannel condenser pipe |
| EP4151942A1 (en) * | 2021-09-15 | 2023-03-22 | MAHLE International GmbH | Flat tube |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB233065A (en) * | 1924-02-08 | 1925-05-07 | Percival Thomas Evans | Improvements in water tubes for radiators and the like |
| EP0302232A1 (en) * | 1987-08-01 | 1989-02-08 | Behr GmbH & Co. | Flat tube for a heat exchanger |
| EP0457470A1 (en) | 1990-05-11 | 1991-11-21 | Showa Aluminum Kabushiki Kaisha | Tube for heat exchangers and a method for manufacturing the tube |
-
1996
- 1996-12-12 FR FR9615291A patent/FR2757258B1/en not_active Expired - Lifetime
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB233065A (en) * | 1924-02-08 | 1925-05-07 | Percival Thomas Evans | Improvements in water tubes for radiators and the like |
| EP0302232A1 (en) * | 1987-08-01 | 1989-02-08 | Behr GmbH & Co. | Flat tube for a heat exchanger |
| EP0457470A1 (en) | 1990-05-11 | 1991-11-21 | Showa Aluminum Kabushiki Kaisha | Tube for heat exchangers and a method for manufacturing the tube |
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0854342A3 (en) * | 1997-01-20 | 1999-03-17 | Zexel Corporation | Tubes for heat exchanger |
| EP0854342A2 (en) * | 1997-01-20 | 1998-07-22 | Zexel Corporation | Tubes for heat exchanger |
| DE29906337U1 (en) | 1999-04-09 | 1999-07-01 | Behr Gmbh & Co, 70469 Stuttgart | Heat exchangers, in particular condensers for automotive air conditioning systems |
| US6935418B1 (en) | 1999-06-18 | 2005-08-30 | Valeo Engine Cooling Ab | Fluid conveying tube and vehicle cooler provided therewith |
| EP1060808A3 (en) * | 1999-06-18 | 2002-01-02 | Valeo Engine Cooling Aktiebolag | Fluid conveying tube as well as method and device for manufacturing the same |
| US6510870B1 (en) | 1999-06-18 | 2003-01-28 | Valeo Engine Cooling Ab | Fluid conveying tube as well as method and device for manufacturing the same |
| US6957487B1 (en) | 1999-06-18 | 2005-10-25 | Valeo Engine Cooling, Ab | Fluid conveying tube as well as method and device for manufacturing the same |
| FR2810727A1 (en) * | 2000-06-21 | 2001-12-28 | Valeo Thermique Moteur Sa | Heat exchanger tube for car radiator comprises metal strip which is bent over to form edges with space between, tube being folded inwards to form groove into which brazing flux is introduced |
| US6513582B2 (en) * | 2000-07-11 | 2003-02-04 | Delphi Technologies, Inc. | Heat exchanger and fluid pipe therefor |
| JP2005515391A (en) * | 2002-01-17 | 2005-05-26 | ベール ゲーエムベーハー ウント コー カーゲー | Welded multi-chamber pipe |
| WO2003060412A3 (en) * | 2002-01-17 | 2003-12-24 | Behr Gmbh & Co | Welded multi-chamber tube |
| CN103711997A (en) * | 2013-12-31 | 2014-04-09 | 南宁八菱科技股份有限公司 | Variation B-shaped multi-channel self-brazing cooling pipe |
| EP3190372A1 (en) | 2016-01-08 | 2017-07-12 | Mahle International GmbH | Flat tube for a heat exchanger |
| DE102016200152A1 (en) | 2016-01-08 | 2017-07-13 | Mahle International Gmbh | Flat tube for a heat exchanger |
| CN109579597A (en) * | 2018-12-04 | 2019-04-05 | 南宁市安和机械设备有限公司 | A kind of porous microchannel condenser pipe |
| EP4151942A1 (en) * | 2021-09-15 | 2023-03-22 | MAHLE International GmbH | Flat tube |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2757258B1 (en) | 1999-03-05 |
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