EP1630513B1 - Tube plat pour echangeur de chaleur, en particulier pour véhicules et méthode de production - Google Patents

Tube plat pour echangeur de chaleur, en particulier pour véhicules et méthode de production Download PDF

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Publication number
EP1630513B1
EP1630513B1 EP05014942.6A EP05014942A EP1630513B1 EP 1630513 B1 EP1630513 B1 EP 1630513B1 EP 05014942 A EP05014942 A EP 05014942A EP 1630513 B1 EP1630513 B1 EP 1630513B1
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EP
European Patent Office
Prior art keywords
flat
tube
impressions
turbulators
flat tube
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.)
Active
Application number
EP05014942.6A
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German (de)
English (en)
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EP1630513A2 (fr
EP1630513A3 (fr
Inventor
Jürgen Dipl.-Ing. Hägele (FH)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mahle Behr GmbH and Co KG
Original Assignee
Mahle Behr GmbH and Co KG
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Publication date
Application filed by Mahle Behr GmbH and Co KG filed Critical Mahle Behr GmbH and Co KG
Publication of EP1630513A2 publication Critical patent/EP1630513A2/fr
Publication of EP1630513A3 publication Critical patent/EP1630513A3/fr
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Publication of EP1630513B1 publication Critical patent/EP1630513B1/fr
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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
    • F28F1/02—Tubular elements of cross-section which is non-circular
    • F28F1/022—Tubular elements of cross-section which is non-circular with multiple channels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
    • B21C37/06—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
    • B21C37/15—Making tubes of special shape; Making tube fittings
    • B21C37/151—Making tubes with multiple passages
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
    • B21C37/06—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
    • B21C37/15—Making tubes of special shape; Making tube fittings
    • B21C37/156—Making tubes with wall irregularities
    • B21C37/158—Protrusions, e.g. dimples
    • 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
    • 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
    • F28F1/40—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only inside the tubular element
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F13/00—Arrangements for modifying heat-transfer, e.g. increasing, decreasing
    • F28F13/06—Arrangements for modifying heat-transfer, e.g. increasing, decreasing by affecting the pattern of flow of the heat-exchange media
    • F28F13/12—Arrangements for modifying heat-transfer, e.g. increasing, decreasing by affecting the pattern of flow of the heat-exchange media by creating turbulence, e.g. by stirring, by increasing the force of circulation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F1/00—Tubular elements; Assemblies of tubular elements
    • F28F1/02—Tubular elements of cross-section which is non-circular
    • F28F2001/027—Tubular elements of cross-section which is non-circular with dimples

Definitions

  • EP 1 060 808 discloses a method for producing a flat tube from a sheet-metal strip with inward embossments, so-called turbulators, and at least two chambers, wherein first a flat sheet metal strip is provided and fed to a tube forming machine, wherein the embossments are formed in one or more stages from the sheet metal strip, and wherein at the longitudinal edges of the sheet metal head radii are formed. It is known to produce flat tubes for heat exchangers from a sheet-metal strip, preferably from a double-side solder-plated aluminum strip in a continuous process on a corresponding pipe-making machine.
  • the flat tube After bending and forming the flat tube cross-section, the flat tube is closed by a welded or soldered longitudinal seam.
  • Such flat tubes are z. B. used for coolant radiator in motor vehicles, the flat tubes are joined with corrugated ribs to form a block and soldered.
  • the flat tube cross-sections are formed as slim as possible, to increase the internal pressure resistance webs, folds or beads are provided which act as tie rods and divide the flat tube cross-section into chambers.
  • flat tubes which are not designed as multi-chamber tubes, but have a continuous cross-section, wherein to increase the heat transfer to the inside of the tube, ie, for. B.
  • turbulators on the coolant side so-called turbulators or vortex generators are provided in the form of inwardly directed impressions. These arranged on both sides turbulators do not touch each other, but leave between them a distance, ie a clear channel height for a core flow; they do not act as tie rods. In order to achieve the necessary internal pressure resistance of such flat tubes, These tubes must be designed accordingly thick-walled. This increases the weight and the material consumption.
  • Another multi-chamber tube was through the EP 0 637 474 A1 known, wherein the individual chambers are divided by soldered together, extending in the longitudinal direction beads.
  • flat tubes are disclosed which are reinforced by knob-like tie rods.
  • the turbulators are preferably formed as elongated impressions, which are arranged in rows transversely to the flow direction and arranged at an angle to each other - they form so-called winglet pairs.
  • a similar flat tube was through the EP 1 061 319 B1 known, also suitable for a motor vehicle radiator.
  • a flat tube equipped with turbulators is designed as a multi-chamber tube, d. H. Has at least two chambers which are separated from each other by a partition wall.
  • the turbulators are preferably arranged on both flat sides of the flat tube in each chamber.
  • the partitions may advantageously be formed as a web, fold or beads, and the flat tubes are advantageously longitudinal seam welded or soldered by means of a fold.
  • the turbulators can have any shape, d. H. oblong or round or angular, d. H. be designed knob-shaped or truncated pyramid, as is already known from the prior art.
  • the turbulators extend into the interior of the pipe only so far that a clear channel height is maintained for an undisturbed core flow. This provides the advantage that on the one hand the heat transfer improves, but the pressure drop is not excessively increased.
  • the turbulators are preferably arranged only on the flat areas of the longitudinal sides and preferably designed as so-called winglets, which represent an optimum between heat transfer and pressure drop.
  • a flat strip which preferably consists of aluminum and Lotplattiert on both sides; it is fed to a tube forming machine, which converts the flat strip into flat tubes in a continuous process.
  • a tube forming machine which converts the flat strip into flat tubes in a continuous process.
  • each folds are placed on the longitudinal edges, ie edges folded approximately at right angles.
  • the turbulators are molded, in a single or multi-stage, preferably two-stage process, ie, first by prefetching a preform and then stamping a final mold.
  • a two- or multi-chamber tube is produced, in which the partition or the partitions are formed by beads.
  • the turbulators are first formed again in the flat band, preferably in a two-stage process, and then beads are formed between the turbulators. Thereafter, head radii are formed at the longitudinal edges, and the tube is closed so that the beads and the head radii abut each other, the head radii being preferably merged into a butt joint which is longitudinally welded.
  • the beads solder - when soldering a heat exchanger block - and thus form tie rods and one or more dense partitions.
  • a folding tube is produced by a similar method, which in turn starts from a flat strip and initially forms at least one web which is formed in one or more forming steps out of the flat strip.
  • the turbulators are then formed in the flat band, then head radii are formed on the longitudinal edges, which are finally combined to form a butt joint, which is preferably longitudinally welded.
  • the bridge soldered to the opposite flat side.
  • the head radii are shaped such that when closing the flat tube forms a lap joint or edge-side fold, which can be soldered. This eliminates the welding process.
  • the turbulators are produced in a continuous process, d. H. by rolling, wherein the flat strip is passed through a pair of rollers, which has the shape of the turbulators as a die and male.
  • the flat tube is used for a motor vehicle heat exchanger, in particular a coolant radiator, which has a brazed block, which consists of flat tubes and corrugated fins.
  • a coolant radiator which has a brazed block, which consists of flat tubes and corrugated fins.
  • the flat soldered on both sides flat tube can be easily soldered to the corrugated ribs in a block.
  • the high degree of slenderness of the flat tube ensures a low air-side pressure drop, on the other hand is given by the partitions in the form of webs, folds or beads the required internal pressure resistance, which is adapted to the prevailing pressures in a coolant circuit.
  • the heat transfer of the coolant is improved in the tube, d. H. the cooling capacity of the radiator is increased without the pressure drop, d. H. the pump capacity increases considerably. This is a lighter and more powerful cooler for motor vehicles to produce.
  • Fig. 1 shows a schematic representation of a cross section through a non-inventive flat tube, which is designed as a so-called folding tube with a arranged in the middle fold 2, softer the flat tube 1 divided into two chambers 3, 4.
  • the cross section of the flat tube 1 is composed of two flat sides 1a, 1b and two rounded narrow sides 1c, 1d.
  • dashed contours 5a, 5b, 5c, 5d are shown by turbulators. Between each turbulators 5 a, 5 c and 5 b, 5 d, a clear channel height h is left, which is free of turbulators.
  • the turbulators 5a, 5b, 5c, 5d are vortex generators, which are designed as impressions projecting into the interior of the flat tube and are formed by the prior art, in particular the DE 101 27 084 A1 the applicant, known per se.
  • the folding tube 1 is preferably made of a double-sided solder-plated aluminum sheet, a so-called flat strip or pipe tape and soldered in the region of the middle fold 2. A method of manufacturing the folding tube 1 will be described below.
  • Fig. 2 shows a two-chamber tube designed as a folding tube 6 with a central partition wall 7, which is designed as a web.
  • Same parts are here with the same reference numbers as in Fig. 1 that is, the flat sides 1a, 1b and the rounded narrow sides 1c, 1d; as well as the chambers 3, 4 and the dashed lines contours 5a, 5b, 5c, 5d for the turbulators, which extend within a chamber 3, 4 over a width b, which is part of the flat sides 1a, 1b.
  • the section b ends so on the one hand in front of the central web 7 and on the other hand before the rounding of the narrow sides 1c, 1d.
  • the folding tube 2 is closed by a fold 8, which is arranged in the region of the narrow side 1c - in this area, the edges of the flat strip curved to radii overlap and form the solderable fold 8.
  • the production of the folding tube 6 will be explained below.
  • Fig. 3 shows a so-called bead tube 9 formed two-chamber tube, which is welded in the region of a narrow side 1c by a longitudinal seam 10.
  • beads 11, 12 are formed, which form a partition by soldering and divide the tube into two chambers 3, 4.
  • the turbulators formed as impressions in the flat sides 1 a, 1 b are indicated by dashed lines 5 a, 5 b, 5 c, 5 d.
  • a manufacture of the welded bead pipe 9 will be described below.
  • Fig. 4 shows a two-pipe tube designed as a welded bar tube 13, which has a central web 14 and a weld seam 15 indicated in the region of the narrow side 1c. Otherwise, the two-chamber tube 13 corresponds to those of the previous embodiments and carries the same reference numerals for the same parts. A method of manufacturing the welded bar tube 13 will be explained below.
  • flat tubes are also possible with a plurality of partitions formed as a fold, web and / or beads, d. H. with more than two chambers.
  • FIGS. 5a to 5f show individual, non-inventive method steps for producing a seaming tube with a central web, as in Fig. 1 is shown.
  • the starting material for the production of the finished flat tube is a flat strip made of aluminum, which is solder-plated on both sides and is continuously fed to a machine, not shown, for tube production.
  • Fig. 5a shows a flat belt 16, which - after a first process step - at its longitudinal edges perpendicularly erected folds 17, 18, which is carried out by the machine, not shown by single or multi-stage roll forming.
  • Vorformen 19 are preferred by turbulators in a first stage, ie formed from the flat strip 16.
  • a second stage shown in Fig. 5c , Formed by countermolding the shapes of the final shape of the turbulators 20, which are shown in the drawing as rectangles - compared to the slightly rounder preform 19. Due to the two-stage deformation process for the manufacture of the turbulators 20 results in the desired shape of the turbulators without it a substantial change in the material thickness of the flat strip 16 comes.
  • the turbulators 20 are distributed across the width of the flat strip 16, ie from fold 17 to fold 18 in groups between which distances are left, in particular flat areas 21, 22, which in the subsequent method step - shown in FIG Fig. 5d - Be bent to so-called head radii 23, 24. The latter form the rounded narrow sides of the flat tube.
  • Fig. 5c Formed by countermolding the shapes of the final shape of the turbulators 20, which are shown in the drawing as rectangles - compared to the slightly rounder preform 19. Due to the two-stage deformation process for the manufacture of the turbulators 20
  • FIG. 5e shows the flat band 16 with almost finished bent head radii 23, 24, between which the continuous bottom of the tube to be manufactured is arranged.
  • Fig. 5f shows finally the finished, closed folding tube 25, in which the two folds 17, 18 come to lie parallel to each other and in the middle.
  • the folding tube 25 will later, z. B. soldered in the production of a block, not shown, for a heat exchanger and is therefore sealed.
  • the fold 17, 18 acts as a tie rod.
  • the turbulators 20, which are in the flat areas of the pipe wall are embossed, project into the free flow cross-sections and thus act as a vortex generator to increase the heat transfer.
  • FIGS. 6a to 6f show in individual, not inventive steps the production of a folding tube, as shown in Fig. 2 is shown, ie with a laterally arranged in the region of the narrow side fold.
  • Fig. 6a shows a flat strip 26 after a first process step in which a web 27 has been formed, ie the flat strip 26 is formed in the region of the web 27, which can be done in several stages.
  • Fig. 6b shows the flat strip 26 after a further process step in which - also in several stages - at both longitudinal edges head radii 28, 29 were formed. In a next process step - shown in Fig.
  • Turbulators are preferred, that is, it is a preform 30, which is formed nub-shaped or conical, produced in a first deformation stage. In the process, flat areas are left at the locations where radii are later bent for the narrow side of the pipe. This is the case here in the area of a center line m.
  • a further process step - shown in Fig. 6d - The final shape of the turbulators 31 is produced by counter-stamping.
  • a next process step - shown in Fig. 6e The flat strip 26 is closed to a tube, that is bent in the region of the center line m to a radius 32, which forms the later narrow side of the tube.
  • 6f shows the finished, ie closed web tube 33, in which the two head radii 28, 29 overlap over a range of about 180 degrees, which is soldered later.
  • the flat tube 33 is sealed and obtained by the soldering of the web 27 with the opposite side and a tie rod.
  • the turbulators 31 protrude inwards into the two flow channels of the two-chamber tube 33.
  • FIGS. 7a to 7f show in several process steps the production of a welded beading tube, as in Fig. 3 is shown.
  • the starting material is again a ribbon 34, from which in a first process step - shown in Fig. 7a Preform 35 of the turbulators are made, in four groups, between which, symmetrical to a center line m, leave clearances with flat areas of the flat belt 34 are.
  • Fig. 7b shows the flat strip after the next process step, namely the counter-stamping, which brings the turbulators 36 in its final shape.
  • the next step in the process is to form two beads 37, 38 in the flat strip 34 symmetrically to the center line m, which in Fig. 7c are shown.
  • Fig. 7e shows the closing of the tube, wherein in the region of the center line m a radius 41 is bent.
  • Fig. 7f shows the closed bead tube 42. Both tube halves are brought together so that the head radii 39, 40 butt together and form a butt joint, which is closed with a longitudinal weld 43.
  • the two beads 37, 38 are directly opposite each other, but do not touch each other in the drawing.
  • the beading combs are later contacted during leveling and soldering of the bead pipes.
  • FIGS. 8a to 8f show in individual process steps the production of a welded bar tube, as in Fig. 4 is shown.
  • Starting material is again a flat band 44, in which first a web 45, preferably formed in several stages - shown in Fig. 8a , In this case, the web 45 is arranged eccentrically to the center line m and in the middle of half the bandwidth.
  • Fig. 8b shows preforms 46 for the turbulators made by drawing. Subsequently, the turbulators 47 are brought into their final shape by countermolding.
  • Fig. 8d shows the forming of head radii 48, 49 on the edge sides of the flat band 44th Fig.
  • FIG. 8e shows the process step "tube closing", wherein in the region of the center line m a radius 50 is bent into the flat band 44.
  • Fig. 8f shows the finished web tube 51, which is closed by a weld 52 in the region of the butt-headed head radii 48, 49.
  • the web 45 does not contact the opposite side of the tube 51, since this flat side is still crowned. It is leveled later, then contacted the web 45 with its web back the opposite side and is soldered to this.
  • Fig. 9 shows the manufacturing process for embossing turbulators.
  • a pipe belt 53 is fed to a pair of rollers 54, 55 and, after passing through the pair of rollers, receives the desired embossing of the turbulators.
  • the upper roller 54 distributed on the circumference arranged projections (male) 54a, while the lower roller 55 corresponding depressions (matrices) 55a, also distributed over the circumference.
  • the pipe band 53 is thus pressed by the elevations 54a in the recesses 55a.
  • Fig. 10 shows a section of a pipe belt 56, in which turbulators 57, 58 after the top to Fig. 9 are formed described method.
  • Both turbulators 57, 58 are formed as elongated shapes and V-shaped to each other, they form a so-called winglet pair, as is known from the above DE 101 27 084 A1 the applicant is known.
  • the flow direction of the flow medium within the flat tube, that is, for example, a coolant is represented by an arrow S.
  • a laterally arranged section AA shows the inwardly (into the tube interior) directed, approximately trapezoidal profile of the winglets 57, 58th
  • Fig. 11 shows a further section of a pipe belt 59 with a turbulator 60, which is formed in the shape of a truncated pyramid and is formed from the pipe band 59.
  • An adjacent section BB shows the profile of the turbulator 60.
  • Fig. 12 shows a section of a pipe belt 61 with a further embodiment of a turbulator 62, which is frusto-conical.
  • a section CC shows the profile of the turbulator 62.
  • the flat tubes described above are preferably used for heat exchangers in motor vehicles, in particular coolant radiator.
  • the latter have a soldered block, which consists of flat tubes and arranged between them corrugated fins.
  • the flat tubes are thus flowed through by the coolant of a cooling circuit of an internal combustion engine of the motor vehicle, while the corrugated fins of ambient air be overflowed.
  • the joining of flat tubes and corrugated ribs to a block is carried out by a so-called Kassettierrea, in which the flat tubes are compressed by a suitable clamping device together with the corrugated fins to block size.
  • Preferred dimensions of the flat tubes according to the invention for a coolant radiator are tube depths between 20 and 50 mm, preferably 40 mm, tube widths between 1.5 and 2 mm and wall thicknesses between 0.15 and 0.35 mm, preferably between 0.2 and 0.25 mm ,

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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)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)

Claims (17)

  1. Procédé de fabrication d'un tube plat à partir d'une bande de tôle, ledit tube plat comprenant des parties en creux (36, 47) dirigées vers l'intérieur, que l'on appelle des turbulateurs, et au moins deux chambres (3, 4) qui sont à chaque fois subdivisées par une paroi de séparation (37/38, 45) formée à partir de la bande de tôle, où
    a) une bande de tôle plate est d'abord préparée et fournie à une machine de moulage des tubes,
    b) la paroi de séparation est formée à partir de la bande de tôle, en une ou plusieurs étape(s), comme une barrette, un pli ou une moulure,
    c) les parties en creux sont formées à partir de la bande de tôle, en une ou plusieurs étape(s),
    d) des rayons de pointe sont formés sur les bords longitudinaux de la bande de tôle, et
    e) une section du tube plat est fermée par la formation d'un petit côté arrondi,
    où l'étape d) est réalisée après l'étape c).
  2. Procédé selon la revendication 1, caractérisé en ce que l'étape b) est réalisée avant l'étape c).
  3. Procédé selon la revendication 1, caractérisé en ce que l'étape b) est réalisée après l'étape c).
  4. Procédé selon la revendication 3, caractérisé en ce que l'étape b) est réalisée avant l'étape d).
  5. Procédé selon l'une quelconque des revendications précédentes, caractérisé en ce qu'une ou plusieurs barrette(s) est ou sont formée(s) comme une paroi de séparation.
  6. Procédé selon l'une quelconque des revendications 1 à 4, caractérisé en ce qu'un ou plusieurs pli(s) est ou sont formé(s) comme une paroi de séparation.
  7. Procédé selon l'une quelconque des revendications 1 à 4, caractérisé en ce qu'une ou plusieurs moulure(s) est ou sont formée(s) comme une paroi de séparation.
  8. Procédé selon l'une quelconque des revendications précédentes, caractérisé en ce que les parties en creux sont formées à partir de la bande de tôle, des deux côtés de la paroi de séparation.
  9. Procédé selon l'une quelconque des revendications précédentes, caractérisé en ce qu'un petit côté arrondi est formé sur la section du tube plat.
  10. Procédé selon l'une quelconque des revendications précédentes, caractérisé en ce que les rayons de pointe (48, 49 ; 39, 40) sont réunis pour former un assemblage bout à bout, et en ce que le tube plat (51, 42) est fermé, dans la zone de l'assemblage bout à bout, par un cordon de soudure longitudinal (52, 43).
  11. Procédé selon l'une quelconque des revendications 1 à 9, caractérisé en ce que les rayons de pointe (28, 29) sont réunis pour former un pli de recouvrement (28/29), et en ce que le tube plat (33) est brasé dans la zone du pli de recouvrement (28/29) et de la paroi de séparation (27).
  12. Procédé selon l'une quelconque des revendications précédentes, caractérisé en ce que les parties en creux sont réalisées par laminage de la bande plate (53).
  13. Procédé selon l'une quelconque des revendications précédentes, caractérisé en ce que les parties en creux sont d'abord préétirées et, ensuite, contre-matricées.
  14. Procédé selon l'une quelconque des revendications précédentes, caractérisé en ce que les parties en creux sont formées sur les deux côtés plats (1a, 1b) du tube plat, où il est laissé, entre lesdits côtés plats, une hauteur de conduit libre h pour chaque conduit d'écoulement.
  15. Procédé selon l'une quelconque des revendications précédentes, caractérisé en ce que les parties en creux sont configurées en étant de forme allongée (57, 58) ou angulaire (60) ou ronde (62).
  16. Procédé selon l'une quelconque des revendications précédentes, caractérisé en ce que les parties en creux sont formées en étant réparties sur la totalité de la zone plate de chaque chambre (3, 4).
  17. Procédé selon l'une quelconque des revendications précédentes, caractérisé en ce que les parties en creux sont configurées et disposées comme étant ce que l'on appelle des winglets (57, 58).
EP05014942.6A 2004-08-24 2005-07-11 Tube plat pour echangeur de chaleur, en particulier pour véhicules et méthode de production Active EP1630513B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102004041101A DE102004041101A1 (de) 2004-08-24 2004-08-24 Flachrohr für einen Wärmeübertrager, insbesondere für Kraftfahrzeuge und Verfahren zur Herstellung eines Flachrohres

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DE102007031249A1 (de) * 2006-07-06 2008-01-10 Behr Gmbh & Co. Kg Flachrohr für einen Wärmeübertrager und Wärmeübertrager mit Flachrohren
US11306943B2 (en) * 2016-09-09 2022-04-19 Kyungdong Navien Co., Ltd. Tube assembly for tubular heat exchanger, and tubular heat exchanger comprising same
DE102019211341A1 (de) * 2019-07-30 2021-02-04 Mahle International Gmbh Wärmeübertrager
DE102020207067A1 (de) 2020-06-05 2021-12-09 Mahle International Gmbh Flachrohr und Wärmeübertrager mit einem Flachrohr
CN114919160B (zh) * 2022-04-14 2024-03-12 湖北兴欣科技股份有限公司 钢塑复合螺旋波纹管成型流水线

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EP1630513A3 (fr) 2008-04-16
DE102004041101A1 (de) 2006-03-02

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