US3724538A - Heat exchanger - Google Patents

Heat exchanger Download PDF

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Publication number
US3724538A
US3724538A US00193117A US3724538DA US3724538A US 3724538 A US3724538 A US 3724538A US 00193117 A US00193117 A US 00193117A US 3724538D A US3724538D A US 3724538DA US 3724538 A US3724538 A US 3724538A
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US
United States
Prior art keywords
fin element
louvers
louver
heat exchanging
conduits
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.)
Expired - Lifetime
Application number
US00193117A
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English (en)
Inventor
T Yamaguchi
Y Amano
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.)
Denso Corp
Original Assignee
NipponDenso Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by NipponDenso Co Ltd filed Critical NipponDenso Co Ltd
Application granted granted Critical
Publication of US3724538A publication Critical patent/US3724538A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • F28F1/10—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
    • F28F1/126—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 consisting of zig-zag shaped fins
    • F28F1/128—Fins with openings, e.g. 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
    • B21D13/04—Corrugating sheet metal, rods or profiles; Bending sheet metal, rods or profiles into wave form by rolling
    • 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
    • B21D53/00—Making other particular articles
    • B21D53/02—Making other particular articles heat exchangers or parts thereof, e.g. radiators, condensers fins, headers
    • B21D53/08—Making other particular articles heat exchangers or parts thereof, e.g. radiators, condensers fins, headers of both metal tubes and sheet metal
    • 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
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/12—All metal or with adjacent metals
    • Y10T428/12361—All metal or with adjacent metals having aperture or cut
    • Y10T428/12368—Struck-out portion type
    • 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
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/12—All metal or with adjacent metals
    • Y10T428/1241—Nonplanar uniform thickness or nonlinear uniform diameter [e.g., L-shape]

Definitions

  • HEAT EXCHANGER [75] Inventors: Terumoto Yamaguchi; Yoshinao Amano, both of Anjo-shi, Japan [73] Assignees Nippondenso Co., Ltd., Kariya-shi,
  • Each louver is depressed at the trailing side of the louver as viewed in the direction of feeding of a strip material for the formation of the louvers so that the stresses produced in the material of the louvers at the timelof manufacture is removed to enable the fin element to be free from arcuate bend from which the fin element otherwise suffers.
  • the present invention relates generally to a heat exchanger and, more particularly, to a corrugated heat exchange fin structure having formed therein rows of louvers directed at an angle with respect to the flow of a coolant and cut to define apertures opened substantially in the same direction.
  • a heat exchanger comprises conduits and corrugated heat exchanging fins secured thereto by means of soldering. Louvers are formed in the heat exchanging fins so as to improve the heat exchange efficiency.
  • Louvers are formed in the heat exchanging fins so as to improve the heat exchange efficiency.
  • One type of louver arrangement is such that louvers are directed at an angle with respect to the flow of a coolant such as air and are cut to define apertures opened in substantially the same direction.
  • Heat exchanging fin elements having louvers of this type are known to provide a large heat exchange efficiency and a decreased pressure drop of the coolant across the elements.
  • this type of louver design has not been employed in mass-production.
  • louver design has an inherent disadvantage that a fin element having formed therein a series of louvers of the above-mentioned type of louver design is caused to have an arcuately, curved or bent configuration with a disadvantage result that it is difficult to assemble and secure the fin element and conduits together to form a completed heat exchanger part.
  • a corrugated heat exchanging fin element for use with a heat exchanger having conduits for a heat exchanging fluid, said fin element being adapted to be secured to the conduits, said fin element having formed thereon louvers extending therefrom at an angle with respect to the flow of a coolant and cut to define apertures opened in substantially the same direction, each of said louvers being deformed at one of the leading and trailing sides thereof as viewed in the direction of feeding of a strip material for the formation of the fin element so that the stress produced in the material of the louver is at least partially removed.
  • a heat exchanger including conduits for a heat exchanging fluid and corrugated heat exchanging fin elements secured to the conduits, each of said fin elements having formed thereon louvers extending therefrom at an angle with respect to the flow of a coolant and cut to define apertures opened in substantially the same direction, each of said louvers being deformed at one of the leading and trailing sides thereof as viewed in the direction of feeding of a metal strip for the formation of the fin element so that the stress produced in the material of the louver is at least partially removed.
  • FIG. 6 is a diagrammatical illustration of a heat exchanging fin element of the present invention before the element is secured to heat exchanger conduits;
  • FIGS. 7 through 11C diagrammatically illustrate the physical mechanism which causes the prior art heat exchanging fin element to be arcuately bent
  • FIG. 12 diagrammatically illustrates the process of forming a heat exchanging fin element according to the present invention
  • FIG. 13 is a fragmentary sectional view of roller dies for forming the fin element shown in FIG. 12;
  • FIG. 14 is a fragmentary sectional view of roller dies for pressing and deforming louvers formed on the fin element shown in FIGS. 12 and 13.
  • FIG. 1 illustrates a part of typical prior art heat exchanger comprising conduits 1 for a heat exchanging fluid and corrugated heat exchanging fins 2 secured to the conduits 1 by any conventional securing means such as soldering.
  • each fin 2 is corrugated or folded to provide a plurality of heat radiation surfaces 2a in each of which a series of louvers 3 are formed to improve the heat exchange efficien cy.
  • FIG. 3 illustrates an example of most efficient louver arrangement or design in which the louvers 3 in all of the heat radiation surfaces 2a are directed at an angle with respect to the flow of a coolant, such as air, indicated by an arrow A so that the louvers cooperate together to define openings or apertures 3a opened substantially in the same direction.
  • a coolant such as air
  • louver design is known to provide a large heat exchange efficiency and a decreased pressure drop of the coolant across the heat exchanger.
  • This type of louver design has an inherent shortcoming that a heat exchanging fin 2 having formed therein louvers of this type of louver arrangement is caused to have an arcuately curved or bent configuration as shown in FIG. 4. It is very difficult and involves troublesome works tosecure such an arcuately bent fin element to conduits by means of soldering or the like. For this reason, the louver design of the type concerned is not employed in mass-production of heat exchanging fin elements in spite of the fact that the louver design per se is quite advantageous.
  • FIG. 7 is a diagrammatical fragmentary plan view of an unfolded prior art heat exchanging fin element 2 having formed therein louvers 3 of the above discussed design. It will 7 be seen that the louvers 3 in a surface or zone 2a are punched to project or extend in a direction substantially opposite to that in which the louvers 3 in adjacent zones 2a extend.
  • louvers 3 of the above-discussed type of louver design, i.e., substantially parallel louvers in the folded and corrugated form of the fin element 2, as shown in FIG. 3.
  • the zones 2a of the unfolded fin element 2 in which the louvers 3 are punched to extend in one direction are represented by X while the zones 2a in which the louvers3 are punched to extend in a substantially opposite direction are represented by Y.
  • the zones of the unfolded fin element 2 corresponding to the convex bends or so-called mountains in corrugated condition are represented by Z while the zones corresponding to the concave bends or socalled valleys in corrugated condition are represented by Z.
  • the zones X and Y are first brought into cutting engagement with louver forming dies at the sides B of the respective zones adjacent the valley zones 2', the sides B being termed hereafter as leading sides.
  • the louver forming dies leave the zones X and Y at their sides 01 adjacent the mountain" zones Z, the sides a being termed hereafter as trailing sides.
  • FIGS. 10A through 10C diagrammatically illustrate the deformation of a single louver 3 in the zone X of a fin element as shown in FIG. 7,
  • FIG. 10A being a diagrammatical plan view of a single louver 3
  • FIGS. 10B and 10C are diagrammatical sectional views taken substantially along lines XB-XB and XC-XC in FIG. 10A, respectively.
  • the broken lines 7 in FIGS. 10B and 10C represent the general plane of the fin element 2.
  • the material of the louver 3 on the trailing side 01 thereof is deformed from the broken line position to the solid line position, the broken line position being taken by the material of the louver 3 immediately after the formation thereof.
  • the material of the louver 3 on the leading side B thereof is deformed as shown in FIG. 10C, i.e., from the broken line position to the solid line position, the broken line position being taken by the material of the louver on the leading side B immediately after the formation of the louver.
  • FIGS. 11A through 11C are views similar to FIGS. 10A to 10C, respectively, but diagrammatically illustrate the deformation of a single louver 3 in a zone Y of the fin element 2. It will be seen in FIGS. 11B and 11C that the trailing side a of the louver 3 in the zone Y has produced therein a stress which tends to cause. the material in this side to approach the general plane 7 of the fin element 2 while the leading side B has produced therein a stress which tends to cause the material in this side to move or deform away from the general plane 7 of the fin element 2.
  • the marks @ represent the stresses which act on the material in the direction upwardly from behind the surfaces of these figures while the marks Qrepresentthe stresses acting in the opposite direction, i.e., from above the surfaces of the drawings downwardly toward behind the surfaces.
  • FIG. 7 diagrammatically illustrates the stresses which cause a corrugated fin element 2 to be deformed in its entirety.
  • the mountain zones Z in one of the side edges 2c of the fin element 2 have produced therein the stressesGB which cause the material in the zones Z in this side edge to be deformed in a direction upwardly from behind the surface of FIG. 7 while the valley zones Z in the side edge 20 have produced therein the stresses 9 which cause the material in the zones Z in the side edge 20 to be deformed downwardly toward behind the surface of FIG. 7, as will be best seen in FIG. 8 which is a diagrammatical side elevational viewof the fin element 2 as taken substantially along line IIX-IIX in FIG. 7 and which diagrammatically illustrates by arrows the directions of deformations.
  • FIG. 9 is a diagrammatical side elevational view of the fin element 2 as taken substantially along line IXIX in FIG. 7 and which diagrammatically illustrates by arrows the direction of deformations.
  • the deformation in the side edge 2c in its entirety is such as to narrow the pitch of the corrugation in the edge of the fin element 2 as shown in FIG. 8 while the deformation in the side edge 2d in its entirety is such as to widen the pitch of the corrugation in the edge 2d of the fin element 2 as shown in FIG. 9.
  • This difference in the deformation between the side edges 26 and 2d is considered to cause the fin element 2 in its entirety to be arcuately curved or bent as shown in FIG. 4.
  • the arcuate bend of a conventional fin element 2 of the class concerned is believed to be caused by the fact that the trailing sides or in the zones X and Y have produced therein the stresses which cause the louvers 3 in these zones to be deformed in directions toward the general plane 7 of the fin element 2. So as to remove these stresses, the inventors have thought of depressing the trailing sides a of the louvers 3 in the zones X and Y to positively deform the material in these sides toward the general plane 7 of the fin element 2.
  • FIG. 5 of the drawings illustrates in side elevation the shape of each louver 13 of a heat exchanging fin element 12 manufactured according to the above concept of the present invention. It will be understood that, since the trailing side a of each louver 13 is depressed, the stresses. produced in the material of the trailing sides a of the louvers 13- of the fin element 12 of the present invention are advantageously at least partially removed to enable the fin element 12 to be free from an arcuate bend, as shown in FIG. 6.
  • the leading sides B may be raised away from the general plane 7 of the fin element 12 so as to remove'the stresses produced in the material of the leading sides at the time the fin element 12 is formed with the louvers 13.
  • This alternative work is less practical because it is difficult to prepare a tool, i.e., roller dies for this purpose.
  • a process for manufacturing a heat exchanging fin element 12 according to the method of the present invention will be described hereunder with reference to FIGS. 12 through 14 of the drawings.
  • a metal strip 11 is fed in a direction indicated by an arrow K, into the nip of a pair of toothed roller dies 21 and 21a which are rotated in opposite directions as indicated by arrows B and C, respectively, to form the strip 11 into an unfinished product 11a, as shown in FIG. 12.
  • the roller dies 21 and 21a have axially extending teeth 22 and 22a, respectively.
  • Each tooth 22 on the roller die 21 has formed thereon a pair of axial rows of louver forming blades 23 while each tooth 22a on the other roller die 21a has similar rows of blades 23a, as shown in FIG. 13.
  • the teeth 22 and 22a and the blades 23 and 23a cooperate together to form the metal strip 11 into a corrugated but unfinished fin element having rows of louvers 13 formed therein.
  • the unfinished product 11a is then advanced into the nip of another pair of louver pressing toothed rollers 25 and 25a having teeth 26 and 26a of substantially the same pitch as that of the teeth 22 and 22a of the roller dies 21 and 21a.
  • Each tooth 26 of the roller 25 has a pair of rows of louver depressing portions 27 and 28 of involute profiles while each tooth 26a of the other roller 25a has a pair of rows of similar louver depressing portions 27a and 28a, as best seen in FIG.
  • the rollers 25 and 25a are also rotated in opposite directions B and C, respectively.
  • the louver depressing portions 27, 28, 27a and 28a on the rollers cooperate together to depress the trailing sides a of the louvers 13 on the unfinished fin element 11a for the described purpose to complete the process of the invention, i.e., to form a finished heat exchanging fin element 12.
  • the teeth 26 and 260 are relieved as at 29 and 29a adjacent the louver depressing portions 27, 28, 27a and 28a so that the louvers 13 except their trailing sides a are not deformed by the teeth 26 and 26a.
  • the finished fin element 12 may, if required, be driven or advanced by a further pair of toothed advancing rollers 31 and 31a having teeth of the pitch which is substantially the same as that in the preceding pairs of rollers 21 and 21a and 25 and 250:.
  • the portion ofthe fin element 12 advanced by the toothed rollers 31 and 31a may then be subjected to a braking action by a plate 33 which is in frictional sliding contact with the run of the fin element 12 and is resiliently urged against the latter by means of a resilient member such as a spring 34 supported from a machine frame M.
  • Reference numerals 35a, 35b, 35c and 35d represent guides which support and guidethe runs of the metal strip 11, the unfinished product 11a and the finished product or heat exchanging fin element 12, respectively.
  • a corrugated heat exchanging fin element for use with a heat exchanger having conduits for a heat exchanging fluid, said fin element being adapted to be secured to the conduits, said fin element having formed thereon louvers extending therefrom at an angle with respect to the flow of a coolant and cut to define apertures opened in substantially the same direction, each of said louvers being deformed at one of the leading and trailing sides thereof as viewed in the direction of feeding of a strip material for the formation of the fin element so that the stress produced in the material of the louver is at least partially removed.
  • a heat exchanger including conduits for a'heat exchanging fluid and corrugated heat exchanging fin elements secured to the conduits, each of said fin elements having formed thereon therefrom at an angle with respect to the flow ofa coolant and cut to define apertures opened in substantially the same direction, each of said louvers being deformed at one of the leading and trailing sides thereof as viewed in the direction of feeding of a metal strip for the formation of the fin element sothat the stress produced in the material of the louver is at least partially removed.
  • each of said louvers is depressed at the trailing side thereof.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Geometry (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
US00193117A 1970-12-27 1971-10-27 Heat exchanger Expired - Lifetime US3724538A (en)

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JP45126115A JPS5022751B1 (es) 1970-12-27 1970-12-27

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Cited By (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4469168A (en) * 1980-02-27 1984-09-04 Hitachi, Ltd. Fin assembly for heat exchangers
WO1986007628A1 (en) * 1985-06-18 1986-12-31 Blackstone Sweden Ab Heat exchanger and method of making it
US4645000A (en) * 1986-04-21 1987-02-24 General Motors Corporation Tube and fin heat exchanger
US4958681A (en) * 1989-08-14 1990-09-25 General Motors Corporation Heat exchanger with bypass channel louvered fins
US5150596A (en) * 1991-07-11 1992-09-29 General Motors Corporation Heat transfer fin with dammed segments
US5390731A (en) * 1994-06-29 1995-02-21 Ford Motor Company Heat exchanger fin
US5403559A (en) * 1989-07-18 1995-04-04 Emitec Gesellschaft Fuer Emissionstechnologie Device for cleaning exhaust gases of motor vehicles
DE9404009U1 (de) * 1994-03-10 1995-07-13 Behr Gmbh & Co, 70469 Stuttgart Wärmetauscher
FR2789167A1 (fr) * 1999-02-01 2000-08-04 Denso Corp Ailette ondulee pour echangeur de chaleur
US6170566B1 (en) 1999-12-22 2001-01-09 Visteon Global Technologies, Inc. High performance louvered fin for a heat exchanger
US20040011516A1 (en) * 2002-03-07 2004-01-22 Calsonic Kansei Corporation Louver fin and corrugation cutter for forming louver fin
US20040173344A1 (en) * 2001-05-18 2004-09-09 David Averous Louvered fins for heat exchanger
US20050126767A1 (en) * 2002-03-09 2005-06-16 Behr Gmbh & Co. Kg Heat exchanger
US20050229630A1 (en) * 2002-07-31 2005-10-20 Behr Gmbh & Co. Kg Flat pipe-shaped heat exchanger
US20060254334A1 (en) * 2005-05-10 2006-11-16 Denso Corporation Device for shaping corrugated fin
DE102006014366A1 (de) * 2006-03-27 2007-10-04 Behr Gmbh & Co. Kg Vorrichtung und Verfahren zum Bearbeiten einer gewalzten Leiteinrichtung
US20070267187A1 (en) * 2003-09-11 2007-11-22 Behr Gmbh & Co. Kg Heat Exchanger
US20080179048A1 (en) * 2004-09-22 2008-07-31 Calsonic Kansei Corporation Louver Fin and Corrugation Cutter
US20110048688A1 (en) * 2009-09-02 2011-03-03 Delphi Technologies, Inc. Heat Exchanger Assembly
US20130299142A1 (en) * 2011-01-21 2013-11-14 Daikin Industries, Ltd. Heat exchanger and air conditioner
US20160025424A1 (en) * 2013-02-18 2016-01-28 Denso Corporation Heat exchanger and manufacturing method thereof
US20160153727A1 (en) * 2013-07-12 2016-06-02 Denso Corporation Fin for heat exchanger
CN111912279A (zh) * 2020-08-13 2020-11-10 西安交通大学 一种扭转曲折百叶窗翅片

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3433044A (en) * 1963-02-19 1969-03-18 Ford Motor Co Method for forming heat exchange element

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2063757A (en) * 1934-12-29 1936-12-08 Gen Motors Corp Radiator core

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3433044A (en) * 1963-02-19 1969-03-18 Ford Motor Co Method for forming heat exchange element

Cited By (31)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4469168A (en) * 1980-02-27 1984-09-04 Hitachi, Ltd. Fin assembly for heat exchangers
WO1986007628A1 (en) * 1985-06-18 1986-12-31 Blackstone Sweden Ab Heat exchanger and method of making it
US4645000A (en) * 1986-04-21 1987-02-24 General Motors Corporation Tube and fin heat exchanger
US5403559A (en) * 1989-07-18 1995-04-04 Emitec Gesellschaft Fuer Emissionstechnologie Device for cleaning exhaust gases of motor vehicles
US4958681A (en) * 1989-08-14 1990-09-25 General Motors Corporation Heat exchanger with bypass channel louvered fins
US5150596A (en) * 1991-07-11 1992-09-29 General Motors Corporation Heat transfer fin with dammed segments
DE9404009U1 (de) * 1994-03-10 1995-07-13 Behr Gmbh & Co, 70469 Stuttgart Wärmetauscher
US5390731A (en) * 1994-06-29 1995-02-21 Ford Motor Company Heat exchanger fin
FR2789167A1 (fr) * 1999-02-01 2000-08-04 Denso Corp Ailette ondulee pour echangeur de chaleur
US6357518B1 (en) 1999-02-01 2002-03-19 Denso Corporation Corrugated fin for heat exchanger
US6170566B1 (en) 1999-12-22 2001-01-09 Visteon Global Technologies, Inc. High performance louvered fin for a heat exchanger
US20040173344A1 (en) * 2001-05-18 2004-09-09 David Averous Louvered fins for heat exchanger
US20040011516A1 (en) * 2002-03-07 2004-01-22 Calsonic Kansei Corporation Louver fin and corrugation cutter for forming louver fin
US6968891B2 (en) * 2002-03-07 2005-11-29 Calsonic Kansei Corporation Louver fin and corrugation cutter for forming louver fin
US20050126767A1 (en) * 2002-03-09 2005-06-16 Behr Gmbh & Co. Kg Heat exchanger
US7147047B2 (en) * 2002-03-09 2006-12-12 Behr Gmbh & Co. Kg Heat exchanger
US20050229630A1 (en) * 2002-07-31 2005-10-20 Behr Gmbh & Co. Kg Flat pipe-shaped heat exchanger
US7882708B2 (en) * 2002-07-31 2011-02-08 Behr Gmbh & Co. Kg Flat pipe-shaped heat exchanger
US20070267187A1 (en) * 2003-09-11 2007-11-22 Behr Gmbh & Co. Kg Heat Exchanger
US20080179048A1 (en) * 2004-09-22 2008-07-31 Calsonic Kansei Corporation Louver Fin and Corrugation Cutter
US20060254334A1 (en) * 2005-05-10 2006-11-16 Denso Corporation Device for shaping corrugated fin
US7272968B2 (en) * 2005-05-10 2007-09-25 Denso Corporation Device for shaping corrugated fin
DE102006014366A1 (de) * 2006-03-27 2007-10-04 Behr Gmbh & Co. Kg Vorrichtung und Verfahren zum Bearbeiten einer gewalzten Leiteinrichtung
US20110048688A1 (en) * 2009-09-02 2011-03-03 Delphi Technologies, Inc. Heat Exchanger Assembly
US20130299142A1 (en) * 2011-01-21 2013-11-14 Daikin Industries, Ltd. Heat exchanger and air conditioner
US9316446B2 (en) * 2011-01-21 2016-04-19 Daikin Industries, Ltd. Heat exchanger and air conditioner
US20160025424A1 (en) * 2013-02-18 2016-01-28 Denso Corporation Heat exchanger and manufacturing method thereof
US10113812B2 (en) * 2013-02-18 2018-10-30 Denso Corporation Heat exchanger and manufacturing method thereof
US20160153727A1 (en) * 2013-07-12 2016-06-02 Denso Corporation Fin for heat exchanger
US9915481B2 (en) * 2013-07-12 2018-03-13 Denso Corporation Fin for heat exchanger
CN111912279A (zh) * 2020-08-13 2020-11-10 西安交通大学 一种扭转曲折百叶窗翅片

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Publication number Publication date
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