Classifications

• • 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
  • B21D13/00—Corrugating sheet metal, rods or profiles; Bending sheet metal, rods or profiles into wave form
  • B21D13/04—Corrugating sheet metal, rods or profiles; Bending sheet metal, rods or profiles into wave form by rolling
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
  • B23D19/00—Shearing machines or shearing devices cutting by rotary discs
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
  • B23D35/00—Tools for shearing machines or shearing devices; Holders or chucks for shearing tools
  • B23D35/001—Tools for shearing machines or shearing devices; Holders or chucks for shearing tools cutting members
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T29/00—Metal working
  • Y10T29/18—Expanded metal making
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T29/00—Metal working
  • Y10T29/49—Method of mechanical manufacture
  • Y10T29/4935—Heat exchanger or boiler making
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T29/00—Metal working
  • Y10T29/51—Plural diverse manufacturing apparatus including means for metal shaping or assembling

Definitions

• the invention relates to a method of manufacturing a fin, a device for implementing such a method and a fin and an exchanger obtained by such a method. It will find its applications particularly in the field of heat exchangers for motor vehicles.
• the function of a heat exchanger is to ensure heat exchange between a first fluid flowing inside tubes of said exchanger and a second fluid such as, for example, atmospheric air.
• a second fluid such as, for example, atmospheric air.
• the invention relates more particularly to a method of manufacturing a fin, which is of the corrugated type.
• These flats are also called “spacers” when they are located outside the circulation tubes of the heat exchanger and “disturbers” when they are located inside the tubes.
• These corrugated fins can be used in particular in the case of 1 brazed heat exchangers.
• a method of manufacturing a fin 1 of width and comprising corrugations for a heat exchanger comprising a step of splitting a metal sheet in at least two strips of width 1 and a folding step of strips of width 1 for obtaining the corrugations.
• a first tool splits a metal strip along its longitudinal axis, the two resulting metal strips then pass into a second tool which forms corrugations in said metal strips.
• the present invention aims to overcome this disadvantage.
• the invention makes it possible to increase the capacity of the machines for manufacturing corrugated fins thus increasing the general rate of the assembly process of the bundle of a heat exchanger.
• the present invention also provides a device for carrying out the method and a fin and a heat exchanger obtained by such a method.
• FIG. 1 represents an exemplary implementation of the method as well as the device according to the invention.
• FIG. 2 schematically represents a detail of the device according to the invention, this detail being situated at the so-called slitting disks of the wheels of the device according to the invention.
• FIG. 1 shows a metal sheet or strip 2 of great length
• the metal sheet is preferably made of aluminum.
• the metal sheet 2 is guided in the direction of the arrow F so as to allow the fin 4 to be formed.
• splitting and folding of the metal foil 2 are carried out. According to the invention, these two steps are simultaneous.
• the method of manufacturing the fin additionally comprises, for example, a step of forming transverse slots (not shown in FIG. 1) spaced apart from each other in the flat zones of the corrugations of the strips of width 1, the slots being able to in particular be oriented parallel to the longitudinal axis of a fin.
• the term "longitudinal axis of a fin” means a direction perpendicular to the width 1 of a fin or an axis parallel to the direction F as shown in FIG. 1.
• the step of forming the transverse slots operates by cutting and lifting a portion of the fin. More particularly, the formation of the transverse slots is performed on the flat areas connecting two adjacent corrugations and not on the entire fin. These transverse slots form a flow deflector to improve the heat exchange.
• the step of forming the transverse slots may take place simultaneously with the splitting and folding steps of the strips of width 1.
• the manufacturing process of the fin may further comprise a step of cutting the fin 4 of width 1 to a predetermined length.
• the device according to the invention is composed of at least two forming wheels 8 and 10, each provided with deformation means 12 of the metal sheet 2.
• the forming wheels 8 and 10 are formed by a stack of so-called deformation or forming discs 30 between which are interposed at a given height one or more so-called slitting discs 22.
• the deformation discs are represented under the shape of four blocks 30-A, 30-B, 30-C and 30-D.
• Each deformation disk 30 comprises deformation means 12.
• the deformation means 12 are here formed by radially projecting teeth, each tooth being formed by two edges connected at a vertex.
• the deformation means 12 can also be seen as so many series of vertices 14 alternating with series of recesses 16, provided at the circumference of each disc.
• the deformation disks 30 may furthermore be provided with means capable of forming the transverse slots defining a deflector as described above.
• the means or sharp edges are located on one of the two edges of a tooth. A cutting edge may be present at the end of some or each tooth of a disc 30.
• the . Relative positioning of the rollers is done in such a way that the teeth of the two rollers 8 and 10 mesh with each other as shown in FIG.
• the knurls 8 and 10 further comprise splitting means 18 of the metal sheet 2.
• the splitting means 18 are made in the form of one or more blades carried, at specific discs called slitting disc, by each of the wheels 8 and 10.
• slitting disc a specific discs carried, at specific discs called slitting disc, by each of the wheels 8 and 10.
• two slitting discs 22 are present on each wheel.
• These slitting discs 22 allow the metal strip 2 to be split into at least two strips 4 of width 1. It will be noted that the splitting of the metal sheet into two strips of width 1 makes it possible to cut the metal sheet in the direction of its length or in other words in the direction of the direction F shown in Figure 1, this operation is performed on the entire fin. For this, the slitting discs 22 are placed on each wheel at a height equal to the width 1 of the fin.
• the slitting disks 22 have a profile similar to the warp disks 30 of the rollers 8 and 10. Slitting discs belonging to the same wheel have diameters. different. In the embodiment shown in FIG. 2, the diameters of the slitting discs 22Al and 22D2 (belonging respectively to the rollers 8 and 10) have a diameter greater than that of the slitting discs 22B1 and 22Cl (belonging respectively to the rollers 8 and 10 For reasons of ease of understanding, only the slitting disks of the rollers 8 and 10 have been shown in FIG.
• the slitting disc 22Al of the wheel 8 comes into contact with the slitting disc 22B1 of the wheel 10.
• the slitting disc 22C2 of the wheel 8 comes into contact with the slitting disk 22D2 of the wheel 10.
• the slitting discs 30 comprise at their circumference means provided for shearing the metal strip 2 into two strips 4 of width 1. Thus, the slitting is done without removal of material and therefore without falling material.
• the slitting discs have been simplified and accentuated in their dimension for ease of understanding.
• the knobs 8 and 10 of the device 6 rotate in opposite directions around their respective axes of rotation A1 and A2 in the direction Sl for the wheel 8 and in the direction S2 for the wheel 10.
• the vertices 14 of the deformation means 12 of a wheel fit into the recesses 16 of the deformation means 12 of the second wheel. This allows the formation of corrugations 20 composed of planar areas 20-1 and 20-2 and folded areas 20-3 forming a bend.
• the slitting blades 18 slit or shear the metal sheet 2 along its longitudinal axis into two strips 4 of width 1 to obtain said two strips of width 1.
• the metal sheet 4 is simultaneously:
• transverse slots forming flow deflectors are formed using sharp edges.
• the two fins 4 are formed and dissociated simultaneously by the forming wheels 8 and 10.

Landscapes

• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
• Punching Or Piercing (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=39831609

Family Applications (1)

Country Status (5)

Families Citing this family (3)

Family Cites Families (23)

• 2008
  • 2008-02-27 FR FR0801051A patent/FR2927829B1/fr not_active Expired - Fee Related
• 2009
  • 2009-02-27 US US12/919,302 patent/US8595932B2/en not_active Expired - Fee Related
  • 2009-02-27 JP JP2010548130A patent/JP2011513066A/ja active Pending
  • 2009-02-27 EP EP09715691A patent/EP2249979A1/de not_active Withdrawn
  • 2009-02-27 WO PCT/EP2009/052404 patent/WO2009106630A1/fr not_active Ceased

Non-Patent Citations (1)

Also Published As

Similar Documents

Legal Events