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
  • B21D53/00—Making other particular articles
  • B21D53/02—Making other particular articles heat exchangers or parts thereof, e.g. radiators, condensers fins, headers
  • B21D53/022—Making the fins
  • B21D53/025—Louvered fins
• • 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
  • B21D13/02—Corrugating sheet metal, rods or profiles; Bending sheet metal, rods or profiles into wave form by pressing
• • 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
  • B21D31/00—Other methods for working sheet metal, metal tubes, metal profiles
  • B21D31/04—Expanding other than provided for in groups B21D1/00 - B21D28/00, e.g. for making expanded metal
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
  • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
  • B21D53/00—Making other particular articles
  • B21D53/02—Making other particular articles heat exchangers or parts thereof, e.g. radiators, condensers fins, headers
  • B21D53/022—Making the fins
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F28—HEAT EXCHANGE IN GENERAL
  • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
  • F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
  • F28D1/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
  • F28D1/04—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits
  • F28D1/053—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being straight
  • F28D1/0535—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being straight the conduits having a non-circular cross-section
  • F28D1/05366—Assemblies of conduits connected to common headers, e.g. core type radiators
• • 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
  • F28F1/325—Fins with openings
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F28—HEAT EXCHANGE IN GENERAL
  • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
  • F28F21/00—Constructions of heat-exchange apparatus characterised by the selection of particular materials
  • F28F21/08—Constructions of heat-exchange apparatus characterised by the selection of particular materials of metal
  • F28F21/081—Heat exchange elements made from metals or metal alloys
  • F28F21/084—Heat exchange elements made from metals or metal alloys from aluminium or aluminium alloys
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F28—HEAT EXCHANGE IN GENERAL
  • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
  • F28F2255/00—Heat exchanger elements made of materials having special features or resulting from particular manufacturing processes
  • F28F2255/08—Heat exchanger elements made of materials having special features or resulting from particular manufacturing processes pressed; stamped; deep-drawn

Definitions

• the present invention relates to a heat exchanger, and more particularly to a mechanical type heat exchanger.
• a heat exchanger generally comprises tubes, in which a heat transfer fluid is intended to circulate, and heat exchange elements connected to these tubes.
• Brazed and mechanical type heat exchangers are usually distinguished by their manufacturing process.
• the heat exchange elements In a mechanical type heat exchanger, the heat exchange elements, referred to in this case as "fins", are connected to the tubes in the following manner. First, the holes are formed in the fins passage tubes. These passage holes are generally delimited each by a fallen edge forming a neck. Then, the fins are arranged substantially parallel to each other and each tube is threaded into a row of aligned holes of the fins. Finally, it causes a radial expansion of the tubes by passing an expansion tool inside these tubes so as to mechanically bind the tubes and fins by crimping, the necks defining the passage holes of the tubes then forming tight collars around the tubes.
• the fins of this type of tube are usually made from smooth metal sheets.
• the object of the invention is to propose a heat exchanger whose heat exchange performance is improved while limiting its mass.
• the subject of the invention is a heat exchanger comprising at least one heat transfer fluid circulation tube connected to at least one calorific dissipation fin, characterized in that the fin is made of expanded metal foil.
• the fin is made of expanded metal sheet makes it possible to increase the heat exchange between the air and the fin while limiting the mass of the heat exchanger, because the exchange surface of the heat exchanger is increased. fin relative to a sheet of smooth metal, without adding material.
• the tube is connected to the fin by clamping the tube in a collar formed in the fin.
• the exchanger comprising a row of substantially parallel tubes
• the fin comprises at least one row of baffle deflectors formed in the louver. fin and interposed between two tubes of the row of tubes.
• the sheet of expanded metal comprises meshes each having a general diamond shape.
• the expanded metal of the sheet comprises aluminum.
• the invention also relates to a method for manufacturing a fin of a heat exchanger according to the invention, the fin being formed from a sheet of metal, characterized in that
• the method comprises the additional step of forming louvers between said through holes.
• FIG. 1 is a partial perspective view of a fin of a heat exchanger according to a particular embodiment of the invention
• FIGS. 2 to 7 are schematic perspective views of a fin manufacturing press during different stages of a fin manufacturing method according to a particular embodiment of the invention.
• FIG. 8 is a schematic view of an exchanger according to the invention.
• FIG. 1 shows a fin of a heat exchanger 1 of mechanical type intended to equip a motor vehicle.
• the heat exchanger comprises a row of substantially parallel tubes 2, in which a conventional heat transfer fluid is intended to circulate, and superimposed heat dissipating fins 4 connected to these tubes 2.
• the tubes 2 are connected to the fins 4 by clamping the tubes in collars 6 formed in the fins 4.
• the fins 4 are provided with holes 8 for passage of the tubes.
• These through holes 8 are each delimited by an edge forming a collar 6 and having two long edge portions connected by two small portions of semicircular edge.
• the through holes each have a generally oblong shape with long portions that are slightly concave in their middle.
• the tubes 2 each have a shape corresponding to that described for the through holes.
• the tubes 2 are arranged substantially parallel to each other, so as to form a single row.
• the fins 4 have a generally rectangular shape, substantially flat, and are arranged in the heat exchanger 1 substantially parallel to each other and perpendicular to the longitudinal directions of the tubes 2.
• the exchanger 1 allows the circulation of an upstream flow of air downstream, the fins 4 being intended to extend through this flow.
• FIG. 1 shows by arrows F the flow direction of flow.
• the exchanger 1 also comprises rows 10 of deflectors 1 2 forming louvers, formed in each fin 4 and each interposed between two tubes 2.
• the fin 4 is made of expanded metal foil, and therefore the deflectors 10 also.
• the metal of the sheet comprises aluminum, for example an alloy comprising essentially aluminum.
• the expanded metal sheet comprises meshes 12 each having a diamond shape.
• the fin 4 being formed from a sheet 16 of metal, this sheet of metal 16 is first compressed between two complementary rows 18 of aligned teeth 20 carried by two jaws 22 of a press 24.
• the sheet of metal 16 is then moved transversely to the rows 18 of teeth by a distance d corresponding to the width of a tooth 20. This movement is represented by the arrow D shown in FIG.
• the tubes are of circular section and the corresponding through holes are circular.

Landscapes

• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Physics & Mathematics (AREA)
• Thermal Sciences (AREA)
• General Engineering & Computer Science (AREA)
• Geometry (AREA)
• Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=54199872

Family Applications (1)

Country Status (7)

Families Citing this family (1)

Family Cites Families (9)

• 2015
  • 2015-07-17 FR FR1556764A patent/FR3038975B1/fr not_active Expired - Fee Related
• 2016
  • 2016-07-06 EP EP16739060.8A patent/EP3325911A1/de not_active Withdrawn
  • 2016-07-06 MX MX2018000661A patent/MX2018000661A/es unknown
  • 2016-07-06 US US15/745,594 patent/US20180304342A1/en not_active Abandoned
  • 2016-07-06 WO PCT/EP2016/065930 patent/WO2017012870A1/fr active Application Filing
  • 2016-07-06 CN CN201680047022.0A patent/CN108369080A/zh active Pending
  • 2016-07-06 BR BR112018000880A patent/BR112018000880A2/pt not_active Application Discontinuation

Also Published As

Similar Documents

Legal Events