US20040173344A1 - Louvered fins for heat exchanger - Google Patents

Louvered fins for heat exchanger Download PDF

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Publication number
US20040173344A1
US20040173344A1 US10/478,277 US47827704A US2004173344A1 US 20040173344 A1 US20040173344 A1 US 20040173344A1 US 47827704 A US47827704 A US 47827704A US 2004173344 A1 US2004173344 A1 US 2004173344A1
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United States
Prior art keywords
corrugation
punch
fin
flaps
tool
Prior art date
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Abandoned
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US10/478,277
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English (en)
Inventor
David Averous
Michael Grivel
Marc Wagner
Fabienne Chatel-Pelage
Francois Fuentes
Claire Szulman
Etienne Werlen
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LAir Liquide SA pour lEtude et lExploitation des Procedes Georges Claude
Fives Cryo SAS
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Individual
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Application filed by Individual filed Critical Individual
Assigned to NORDON CRYOGENIE, L'AIR LIQUIDE, SOCIETE ANONYME A DIRECTOIRE ET CONSEIL DE SURVEILLANCE POUR L'ETUDE ET L'EXPLOITATION DES PROCEDES GEORGES CLAUDE reassignment NORDON CRYOGENIE ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: AVEROUS, DAVID, CHATEL-PELAGE, FABIENNE, FUENTES, FRANCOISE, GRIVEL, MICHAEL, TURGIS, CLAIRE, WAGNER, MARC, WERLEN, ETIENNE
Publication of US20040173344A1 publication Critical patent/US20040173344A1/en
Abandoned legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J19/24—Stationary reactors without moving elements inside
    • B01J19/248—Reactors comprising multiple separated flow channels
    • B01J19/249—Plate-type reactors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J19/32—Packing elements in the form of grids or built-up elements for forming a unit or module inside the apparatus for mass or heat transfer
    • 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
    • B21D53/04—Making other particular articles heat exchangers or parts thereof, e.g. radiators, condensers fins, headers of sheet metal
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J5/00—Arrangements of cold exchangers or cold accumulators in separation or liquefaction plants
    • F25J5/002—Arrangements of cold exchangers or cold accumulators in separation or liquefaction plants for continuously recuperating cold, i.e. in a so-called recuperative heat exchanger
    • 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
    • F28D9/00—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D9/0062—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one heat-exchange medium being formed by spaced plates with inserted elements
    • F28D9/0068—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one heat-exchange medium being formed by spaced plates with inserted elements with means for changing flow direction of one heat exchange medium, e.g. using deflecting zones
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F3/00—Plate-like or laminated elements; Assemblies of plate-like or laminated elements
    • F28F3/02—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations
    • F28F3/025—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being corrugated, plate-like elements
    • F28F3/027—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being corrugated, plate-like elements with openings, e.g. louvered corrugated fins; Assemblies of corrugated strips
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J2219/32—Details relating to packing elements in the form of grids or built-up elements for forming a unit of module inside the apparatus for mass or heat transfer
    • B01J2219/322—Basic shape of the elements
    • B01J2219/32203—Sheets
    • B01J2219/3221—Corrugated sheets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J2219/32—Details relating to packing elements in the form of grids or built-up elements for forming a unit of module inside the apparatus for mass or heat transfer
    • B01J2219/322—Basic shape of the elements
    • B01J2219/32203—Sheets
    • B01J2219/32213—Plurality of essentially parallel sheets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J2219/32—Details relating to packing elements in the form of grids or built-up elements for forming a unit of module inside the apparatus for mass or heat transfer
    • B01J2219/322—Basic shape of the elements
    • B01J2219/32203—Sheets
    • B01J2219/32237—Sheets comprising apertures or perforations
    • B01J2219/32241—Louvres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J2219/32—Details relating to packing elements in the form of grids or built-up elements for forming a unit of module inside the apparatus for mass or heat transfer
    • B01J2219/322—Basic shape of the elements
    • B01J2219/32203—Sheets
    • B01J2219/32248—Sheets comprising areas that are raised or sunken from the plane of the sheet
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J2219/32—Details relating to packing elements in the form of grids or built-up elements for forming a unit of module inside the apparatus for mass or heat transfer
    • B01J2219/324—Composition or microstructure of the elements
    • B01J2219/32466—Composition or microstructure of the elements comprising catalytically active material
    • B01J2219/32475—Composition or microstructure of the elements comprising catalytically active material involving heat exchange
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J2219/32—Details relating to packing elements in the form of grids or built-up elements for forming a unit of module inside the apparatus for mass or heat transfer
    • B01J2219/328—Manufacturing aspects
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J2290/00—Other details not covered by groups F25J2200/00 - F25J2280/00
    • F25J2290/10—Mathematical formulae, modeling, plot or curves; Design methods
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2250/00—Arrangements for modifying the flow of the heat exchange media, e.g. flow guiding means; Particular flow patterns
    • F28F2250/10—Particular pattern of flow of the heat exchange media
    • F28F2250/108—Particular pattern of flow of the heat exchange media with combined cross flow and parallel flow

Definitions

  • the present invention relates to a corrugated fin for a plate and fin heat exchanger.
  • the invention applies advantageously to a heat exchanger of a unit for separating air or H 2 /CO (hydrogen/carbon monoxide) mixtures by cryogenic distillation.
  • H 2 /CO hydrogen/carbon monoxide
  • This exchanger may be a main heat exchange line or a reboiler/condenser.
  • FIG. 1 of the appended figures depicts, in perspective, with partial cutaways, one example of such a heat exchanger, of conventional structure, to which the invention applies.
  • the heat exchanger 1 depicted consists of a stack of parallel rectangular plates 2 , all identical, between them defining a plurality of passages for fluids to be placed in an indirect heat-exchange relationship.
  • these passages are, in succession and cyclically, passages 3 for a first fluid, 4 for a second fluid and 5 for a third fluid.
  • Each passage 3 to 5 is bordered by closure bars 6 which delimit it, leaving inlet/outlet apertures 7 for the corresponding fluid uncovered.
  • closure bars 6 which delimit it, leaving inlet/outlet apertures 7 for the corresponding fluid uncovered.
  • brace corrugations or corrugated fins 8 which at the same time act as heat-exchange fins, as braces between the plates, particularly during the brazing and to prevent any deformation of the plates when fluids under pressure are used, and also serve to guide the flow of the fluids.
  • the stack of plates, closure bars and brace corrugations is generally made of aluminum or of an aluminum alloy and is assembled in a single operation by furnace brazing.
  • Fluid inlet/outlet boxes 9 are then welded to the exchanger body thus produced in such a way as to sit over the rows of corresponding inlet/outlet apertures, and they are connected to pipes 10 for feeding and discharging the fluids.
  • the exchangers of cryogenic type as described with reference to FIG. 1, have large sizes (are several meters long) and may be made up of several individual bodies as described hereinabove. The volumes of such exchangers are therefore very high;
  • brace corrugations 8 of the serrated, straight or perforated straight type use is very conventionally made of brace corrugations 8 of the serrated, straight or perforated straight type.
  • the serrated corrugation which is the most commonly used, is thermally very efficient but in terms of pressure drops, its performance is somewhat penalizing.
  • corrugations of the exchangers of the type used in the automotive industry are manufactured using wheels, with channels of triangular or sinusoidal section, and limited densities, from thin strip (about 0.1 mm thick).
  • brace corrugations known as “louvered corrugations”, as depicted in FIG. 2.
  • a louvered corrugation has an overall main direction of corrugation D 1 defining an overall direction F of flow of the fluid.
  • the corrugation In the plane P orthogonal to the overall main direction of corrugation D 1 , the corrugation has a cross section of sinusoidal shape, stretched heightwise.
  • the sinusoid thus defined extends in a direction D 2 perpendicular to the direction D 1 , these two directions being assumed, for the convenience of the description, to be horizontal as has been depicted in FIG. 2.
  • the corrugation has corrugation crests 21 , defined by the crests of the sinusoid, and corrugation troughs 22 , defined by the troughs of the sinusoid.
  • the crests 21 and the troughs 22 alternately connect corrugation legs 23 each having a vertical mean plane perpendicular to the direction D 2 .
  • Two consecutive corrugation legs 23 between them define a fluid passage with respect to the overall direction F of flow.
  • each corrugation leg 23 Cut from each corrugation leg 23 is a series of flaps 25 , which are mutually parallel and inclined with respect to the vertical mean plane and to the overall main direction of corrugation D 1 .
  • the flaps 25 define openings constituting secondary passages for the fluid, in a mainly transverse direction, from one channel to an adjacent channel. These flaps extend over just part of the height of the corrugation leg.
  • the corrugation crests and troughs whether the corrugation be triangular or sinusoidal, offer brazing lines only on the dividing plates, and therefore offer only very small surface area for mechanical connection to the plates.
  • Such fin geometries are therefore not suited to the high pressures used in industrial exchangers, which are conventionally between 6 and 10 bar, and sometimes reach as high as 80 bar.
  • the shape of the louvered corrugations used in the automotive industry is closely connected to the method of manufacture using the wheel, which is particularly suited to high manufacturing throughputs.
  • Other corrugation shapes can be obtained only with great difficulty using such a method of manufacture involving the wheel.
  • the cutting of the flaps can be done correctly only over part of the height of the corrugation legs. This cutting-out is not enough to achieve the level of heat exchange performance required in industrial exchangers.
  • the conventional method of manufacture of louvered corrugations may prove difficult to adapt to significant strip thicknesses, of the order of 0.2 to 0.5 mm, as used in industrial exchangers in order to withstand the mechanical stresses on the fins.
  • the object of the invention is therefore to propose a fin of the louvered type, whose performance in terms of pressure drop is better in particular than the serrated corrugation, and which can be used in industrial exchangers, particularly plate and fin heat exchangers of a unit for separating air or H 2 /CO mixtures by cryogenic distillation, whether this be in the main heat exchange line or in a reboiler/condenser.
  • the subject of the invention is a corrugated fin for a plate and fin heat exchanger, of the type with louvers defining an overall main direction of corrugation, comprising a set of corrugation legs alternately connected by a corrugation crest and by a corrugation trough, the legs being provided with flaps cut from said corrugation legs and inclined at an angle with respect to the main direction of corrugation, characterized in that the corrugation legs, the corrugation crests and the corrugation troughs form, in cross section with respect to the main direction of corrugation, straight segments, the crests and the troughs being mutually parallel.
  • the fin offers a brazing area that allows it to be used in exchangers of the aforementioned type.
  • the corrugation legs are all mutually parallel and perpendicular to the corrugation troughs, so that the fin has a square wave-shaped corrugation;
  • each flap is cut along the direction of the straight segment defined by the corrugation leg over substantially the entire length of said segment;
  • the fin has a substantially uniform wall thickness of between 0.2 and 0.5 mm.
  • Another object of the invention is to propose a louvered fin geometry of the type described hereinabove making it possible to limit the pressure drops induced in the fin and to obtain good heat exchange quality, to an extent that will allow this type of fin to be used in industrial cryogenic exchangers.
  • a fin according to the invention in which the corrugation legs have a thickness e, a mean transverse separation w with respect to the overall main direction of corrugation, which defines the width of a passage channel and a spacing P, and the flaps have a length l s , is characterized in that the length of the flaps is greater than the spacing.
  • the angle of inclination of the flaps lies, in terms of absolute value, strictly between a minimum value and a maximum value which are positive and defined by the following equations:
  • the invention also relates to a method for the continuous manufacture, from a flat product in sheet form, of a louvered corrugated fin for a plate heat exchanger, of the type comprising flaps cut from corrugation legs, particularly a fin as described hereinabove.
  • the product is passed step by step through a press tool comprising at least a moving tool part with a reciprocating movement, said tool part in the one same movement corrugating the fin and cutting the flaps.
  • the flat product is held in position upstream of said moving tool part by means of a holding device when said moving tool part is active, and the flat product is released to continue its journey and to extract the formed corrugation from the tool when the moving tool part is inactive,
  • the holding device and the moving tool part are driven and synchronized by command and control means.
  • the invention also relates to a device for implementing the method described hereinabove.
  • This device comprises a press tool, a device for continuously feeding the tool with flat product in sheet form, said tool comprising at least one punch and one die that complement each other, said punch being able to be given a relative translational movement with respect to the die in a direction substantially orthogonal to the surface of the flat product in sheet form.
  • said punch extends in a longitudinal overall direction and has a plurality of planar facets of which at least one is directed in the direction of translation of the punch and said overall direction and at least another, intended to form a flap, is directed in the direction of translation of the punch and a direction inclined with respect to the overall direction.
  • the punch comprises, between two consecutive facets, a planar setback in the direction of translation and a direction substantially orthogonal to the overall direction;
  • the punch has grooves running in the direction of translation, between a facet and a setback;
  • the device comprises a device for holding the flat product in sheet form upstream of the tool allowing the flat product selectively to be fixed with respect to the tool or released to allow it to progress;
  • the device comprises command and control means designed to drive and synchronize the tool and the holding device.
  • FIGS. 3 to 8 of the attached drawings in which:
  • FIG. 3 is a perspective view of part of a corrugated fin according to the invention.
  • FIG. 4 is an enlarged sectional view on the vertical plane V depicted in FIG. 3;
  • FIG. 5 is an enlarged schematic view in section, on the horizontal plane H, of the corrugation depicted in FIG. 3, just three corrugation legs being depicted;
  • FIG. 6 is a similar partial depiction, on a larger scale
  • FIG. 7 is a schematic depiction of a device for manufacturing a louvered corrugated fin according to the invention.
  • FIG. 8 combines views from above of a punch, a guide, and outlet, central and inlet braces, respectively, used in the device of FIG. 7.
  • FIG. 3 depicts a louvered corrugation according to the invention, which has a main overall direction of corrugation D 1 , and a cross section (FIG. 4) in the form of a square wave, square waves thus defined running in a direction D 2 perpendicular to the direction D 1 .
  • these two directions are assumed to be horizontal.
  • square wave here means a succession, in alternation, of horizontal and vertical segments, the horizontal segments being aligned.
  • the fin has corrugation crests 121 defined by the crests of the square waves, which are flat and horizontal. It has corrugation troughs 122 , defined by the troughs of the square waves, which are also flat and horizontal.
  • the crests 121 and the troughs 122 alternately connect corrugation legs 123 which are planar and vertical, the mean plane of which runs perpendicular to the direction D 2 .
  • Cut from the corrugation legs 123 is a series of flaps 125 which are mutually parallel and inclined with respect to the vertical plane and to the overall direction of corrugation D 1 .
  • the flaps 125 define openings constituting secondary passages for the fluid, in a mainly transverse direction, from one channel to an adjacent channel.
  • the flaps 125 of a corrugation leg are cut over the entire height (or practically over the entire height) of the straight segment defined by the mean plane of the corrugation leg considered in cross section.
  • FIG. 5 is a schematic view in section, on the horizontal plane (H) of symmetry, of the corrugation depicted in FIG. 3, just three corrugation legs being depicted here.
  • the lines denoted by the reference 130 represent the vertical plane of a corrugation leg 123 , with respect to which plane the angle of inclination ⁇ of the flaps 125 is defined.
  • the thickness e is between 0.2 and 0.5 mm, essentially so as to reach a compromise between the mechanical integrity and the density of the fin.
  • the flaps 125 are configured in a pattern which repeats with a geometric periodicity characterized by a period ⁇ .
  • This pattern here comprises two groups of six flaps inclined respectively at a positive angle ⁇ and at a negative angle ⁇ , with, between these two groups, a planar region 132 , 134 directed in the direction D 1 .
  • Two transversely consecutive corrugation legs 123 are identical, and therefore are made up of the same sequence of patterns repeating periodically without a relative offset or shift.
  • the corresponding corrugation legs 123 have no openings.
  • One aspect of the invention relies on the observation that some of the geometric parameters of a louvered corrugation, which are described above, have a significant influence on the thermal performance and pressure drop performance of the fin.
  • a flap length l s will be chosen such that:
  • cryogenic exchangers equipped with exchange corrugations of varying densities corresponding to the various modes of operation of the passages in one and the same heat exchanger particularly having different pressures according to the passages, these pressures being able to be as high as several tens of bar.
  • high-density fins for short flap lengths or, alternatively, lower-density fins with longer flap lengths are possible.
  • optimum fin performance is obtained when the angle of inclination of the flaps ⁇ lies strictly between a minimum value ⁇ min and a maximum value ⁇ max which are positive, defined by the following equations:
  • the maximum value ⁇ max of the angle ⁇ corresponds, for its part, to the angle of alignment of two consecutive flaps 125 B, 125 C of two consecutive corrugation legs, and the second condition
  • ⁇ max ensures an opening such that the passages in the consecutive corrugation legs are not aligned, and thus generate turbulence.
  • an angle of inclination ⁇ is chosen that satisfies the condition
  • the invention is also aimed at a cryogenic plate heat exchanger of the type comprising a stack of parallel plates 2 which define a plurality of fluid-circulation passages 3 to 5 of flat overall shape, closure bars 6 delimiting these passages, and corrugated fins 8 arranged in the passages, characterized in that at least some of the corrugated fins 8 are of the type described hereinabove.
  • a device or machine allowing the manufacture of a louvered corrugated fin, particularly a fin of the type described with reference to FIGS. 3 to 6 , and particularly a thick-walled fin will now be described with reference to FIG. 7.
  • This device comprises a press tool essentially comprising a die 201 and a punch 202 which can be given a relative translational movement.
  • the die 201 is fixed and the punch 202 can move.
  • the punch 202 may be given a reciprocating translational movement assumed to be vertical.
  • the punch 202 and the die 201 have complementary shapes.
  • the tool has an inlet 203 and an outlet 204 via which a metal product in sheet form that is to be processed continuously passes.
  • the device possesses means, not depicted, for moving along and guiding the metal sheet 205 , which allow the metal sheet to be moved regularly step by step through the tool, in a plane assumed to be horizontal.
  • the punch 202 by collaborating with the die 201 , in regular intervals shapes the metal sheet fed continuously into the tool.
  • the device also comprises means 210 for holding the sheet upstream of the inlet 203 , allowing the sheet to be selectively fixed with respect to the tool or released to allow it to progress.
  • the holding means 210 may for example essentially consist of two clamping jaws situated one on each side of the surface of the sheet 205 .
  • the device further comprises command and control means 220 able to command the operation of the tool, in this case the movements of the punch 202 and of the holding means 210 , in response to measured and/or prerecorded parameters.
  • the command and control means for this purpose comprise a sensor 221 sensing the position of the punch 202 , and a sensor 222 sensing the position or status of the holding means 210 .
  • the command and control means 220 also comprise a computer 225 connected to the position sensors 221 , 222 so as to receive their respective detection signals S 1 , S 2 .
  • the computer 225 is also designed to receive other prerecorded parameters P i and the preprogrammed command laws L i .
  • the computer 225 sends the punch 202 (that is to say its drive member), and the holding means 210 , respective command signals C 1 , C 2 formulated on the basis of the detection signals S 1 , S 2 , of the prerecorded external parameters P i and of the command laws L i .
  • the die 201 has been assumed to be fixed, but it may in reality be moveable, in alternation with the punch 202 .
  • the die 201 is driven by a drive member also receiving a command signal from the computer 225 .
  • the die 201 comprises an inlet brace 231 , a central brace 232 , and an outlet brace 233 , while the punch 202 comprises a first punch part 241 (or “first punch”) and a second punch part 242 (or “second punch”).
  • Each of these elements 231 , 232 , 233 , 241 , 242 is elongate in a horizontal overall direction D.
  • the inlet brace 231 and the central brace 232 are arranged parallel to each other so as to define between them a space 245 of a shape that complements the first punch 241 .
  • the central brace 232 and the outlet brace 233 are arranged parallel to one another and spaced in such a way as to define between them a passage 246 that complements the second punch 242 .
  • the first pressing of the metal sheet by the first punch 241 between the braces 231 , 232 makes it possible to carry out a first corrugation and flap-cutting step, while the second pressing step performed on the tool part thus formed by means of the second punch 241 and the central 232 and outlet 233 braces allows the corrugation to be given its definitive shape.
  • the first punch 241 and the second punch 242 are of substantially identical shapes, while the braces 231 , 232 , 233 are of complementary shapes, which means that it will be beneficial to describe the shape of just one punch, for example the first punch 241 .
  • this first punch 241 is of a shape designed to shape a square wave louvered corrugation. It has a succession of vertical planar facets, of which facets 251 run in the overall longitudinal direction D of the punch.
  • the “straight” facets 251 correspond to the shapes of the corrugation leg sections devoid of flaps.
  • the punch 241 has other planar lateral facets 252 which are facets that are inclined with respect to this main direction D, and are intended to cut out the flaps.
  • the punch has a setback 253 in the form of a planar vertical face orthogonal to the overall direction D.
  • the punch 202 is actuated in vertical translation toward the die 201 , carrying the first punch 241 and the second punch 242 along in the same movement so as, in one and the same movement of the punch 202 , to corrugate the fin and cut out the flaps;
  • the sheet 205 is released from the holding means 210 so as to allow it to progress through the tool and so as to allow the corrugations already formed to be extracted from the tool;
  • the metal sheet 205 is advanced by one step before the aforementioned operations are repeated, in the same order.
  • the prerecorded parameters P i and the command laws L i correspond to the datum geometry of the corrugated fin. These laws and parameters vary according to the type of corrugation to be produced and according to the desired thermal performance of the corrugated fin or according to the desired flow characteristics of the fluid.
  • this method and this device make it possible to produce louvered corrugations that can be used in industrial exchangers, with high manufacturing throughputs comparable with the throughputs in the manufacture of louvered fins used in the automotive industry.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Separation By Low-Temperature Treatments (AREA)
US10/478,277 2001-05-18 2001-05-18 Louvered fins for heat exchanger Abandoned US20040173344A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR0106586A FR2824895B1 (fr) 2001-05-18 2001-05-18 Ailette ondulee a persiennes pour echangeur de chaleur a plaques, et echangeur a plaques muni de telles ailettes
FR01/06586 2001-05-18
PCT/FR2002/001674 WO2002095315A1 (fr) 2001-05-18 2002-05-17 Ailette a persiennes pour echangeur de chaleur

Publications (1)

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US20040173344A1 true US20040173344A1 (en) 2004-09-09

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US10/478,277 Abandoned US20040173344A1 (en) 2001-05-18 2001-05-18 Louvered fins for heat exchanger

Country Status (7)

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US (1) US20040173344A1 (fr)
EP (2) EP1395787B1 (fr)
JP (1) JP4044444B2 (fr)
CN (1) CN100383485C (fr)
DE (2) DE60232830D1 (fr)
FR (1) FR2824895B1 (fr)
WO (1) WO2002095315A1 (fr)

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US20050109496A1 (en) * 2003-11-25 2005-05-26 Baolute Ren Heat exchanger tubing with connecting member and fins and methods of heat exchange
US20080036102A1 (en) * 2004-03-16 2008-02-14 Jean-Yves Thonnelier Corrugated Criss-Crossing Packing Structure
US20080202731A1 (en) * 2004-07-30 2008-08-28 Behr Gmbh & Co. Kg One-Piece Turbulence Insert
US20140224462A1 (en) * 2011-05-13 2014-08-14 Toshimitsu Kamada Heat exchanger
US20160097599A1 (en) * 2013-05-23 2016-04-07 Calsonic Kansei Corporation Heat exchanger
US20170198983A1 (en) * 2016-01-08 2017-07-13 Hanon Systems Fin for heat exchanger
US20170284748A1 (en) * 2014-09-19 2017-10-05 T.Rad Co., Ltd. Corrugated fins for heat exchanger
US20180112933A1 (en) * 2015-04-17 2018-04-26 Denso Corporation Heat exchanger
US20190033012A1 (en) * 2014-09-22 2019-01-31 Hamilton Sundstrand Space Systems International, Inc. Multi-layer heat exchanger and method of distributing flow within a fluid layer of a multi-layer heat exchanger
US10436156B2 (en) 2016-12-01 2019-10-08 Modine Manufacturing Company Air fin for a heat exchanger, and method of making the same
CN111536822A (zh) * 2020-05-20 2020-08-14 广东美的白色家电技术创新中心有限公司 翅片、换热器和空调器

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FR2855770A1 (fr) * 2003-06-05 2004-12-10 Air Liquide Bande pour module de garnissage et installation correspondante
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ITMI20081168A1 (it) * 2008-06-26 2009-12-27 Fondital Spa Elemento di radiatore da riscaldamento a protezione totale anti-corrosione, e metodo di trattamento anti-corrosione di elementi di radiatori da riscaldamento
CN101788241B (zh) * 2009-03-25 2014-04-16 三花控股集团有限公司 用于热交换器的开窗式翅片和带该翅片的热交换器
CN101846479B (zh) * 2009-03-25 2012-02-22 三花丹佛斯（杭州）微通道换热器有限公司 用于换热器的翅片以及采用该翅片的换热器
CN102151741B (zh) * 2010-11-04 2013-10-16 张舜德 板翅式换热器翅片多刀成型模具
FR2997482B1 (fr) * 2012-10-25 2018-07-27 Valeo Systemes Thermiques Module thermo electrique et echangeur de chaleur comprenant un tel module.
CN103697742B (zh) * 2013-12-27 2016-06-29 天津大学 高效板翅式换热器翅片
CN105101734B (zh) * 2014-04-22 2017-12-05 华为技术有限公司 散热装置及具有该散热装置的机柜
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JP6414482B2 (ja) * 2015-02-17 2018-10-31 株式会社デンソー オフセットフィン製造方法およびオフセットフィン製造装置
DE102016210159A1 (de) * 2016-06-08 2017-12-14 Mahle International Gmbh Rippenelement für einen Wärmeübertrager
FR3058510B1 (fr) * 2016-11-10 2019-08-16 Safran Echangeur de chaleur
CN108106469B (zh) * 2018-01-26 2023-08-25 上海交通大学 一种适用于摇晃工况的板翅式换热器翅片组件及换热器
JP7480487B2 (ja) * 2018-11-13 2024-05-10 株式会社デンソー 熱交換器
CN115738986A (zh) * 2022-11-01 2023-03-07 南京先进生物材料与过程装备研究院有限公司 一种强化混合的内构件及利用其制备全氟烷基苯胺的方法

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Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7028766B2 (en) * 2003-11-25 2006-04-18 Alcoa Inc. Heat exchanger tubing with connecting member and fins and methods of heat exchange
US20050109496A1 (en) * 2003-11-25 2005-05-26 Baolute Ren Heat exchanger tubing with connecting member and fins and methods of heat exchange
US20080036102A1 (en) * 2004-03-16 2008-02-14 Jean-Yves Thonnelier Corrugated Criss-Crossing Packing Structure
US8210505B2 (en) 2004-03-16 2012-07-03 L'air Liquide Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Corrugated criss-crossing packing structure
US20080202731A1 (en) * 2004-07-30 2008-08-28 Behr Gmbh & Co. Kg One-Piece Turbulence Insert
US9803935B2 (en) * 2011-05-13 2017-10-31 Daikin Industries, Ltd. Heat exchanger
US20140224462A1 (en) * 2011-05-13 2014-08-14 Toshimitsu Kamada Heat exchanger
US10197336B2 (en) * 2013-05-23 2019-02-05 Calsonic Kansei Corporation Heat exchanger
US20160097599A1 (en) * 2013-05-23 2016-04-07 Calsonic Kansei Corporation Heat exchanger
US9995539B2 (en) * 2014-09-19 2018-06-12 T.Rad Co., Ltd. Corrugated fins for heat exchanger
US20170284748A1 (en) * 2014-09-19 2017-10-05 T.Rad Co., Ltd. Corrugated fins for heat exchanger
US20190033012A1 (en) * 2014-09-22 2019-01-31 Hamilton Sundstrand Space Systems International, Inc. Multi-layer heat exchanger and method of distributing flow within a fluid layer of a multi-layer heat exchanger
US10976117B2 (en) * 2014-09-22 2021-04-13 Hamilton Sundstrand Space Systems International, Inc. Multi-layer heat exchanger and method of distributing flow within a fluid layer of a multi-layer heat exchanger
US10107553B2 (en) * 2015-04-17 2018-10-23 Denso Corporation Heat exchanger
US20180112933A1 (en) * 2015-04-17 2018-04-26 Denso Corporation Heat exchanger
US10094624B2 (en) * 2016-01-08 2018-10-09 Hanon Systems Fin for heat exchanger
US20170198983A1 (en) * 2016-01-08 2017-07-13 Hanon Systems Fin for heat exchanger
US10436156B2 (en) 2016-12-01 2019-10-08 Modine Manufacturing Company Air fin for a heat exchanger, and method of making the same
US11162742B2 (en) * 2016-12-01 2021-11-02 Modine Manufacturing Company Air fin for a heat exchanger
CN111536822A (zh) * 2020-05-20 2020-08-14 广东美的白色家电技术创新中心有限公司 翅片、换热器和空调器
CN111536822B (zh) * 2020-05-20 2022-02-22 广东美的白色家电技术创新中心有限公司 翅片、换热器和空调器

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Publication number Publication date
JP4044444B2 (ja) 2008-02-06
CN1509403A (zh) 2004-06-30
EP1683590A3 (fr) 2006-08-30
DE60219308T2 (de) 2008-01-03
EP1395787A1 (fr) 2004-03-10
EP1395787B1 (fr) 2007-04-04
FR2824895B1 (fr) 2005-12-16
DE60219308D1 (de) 2007-05-16
JP2004531684A (ja) 2004-10-14
FR2824895A1 (fr) 2002-11-22
WO2002095315A1 (fr) 2002-11-28
CN100383485C (zh) 2008-04-23
EP1683590B1 (fr) 2009-07-01
DE60232830D1 (de) 2009-08-13
EP1683590A2 (fr) 2006-07-26

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