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WO2020080097A1 - Ailette - Google Patents

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Publication number
WO2020080097A1
WO2020080097A1 PCT/JP2019/038729 JP2019038729W WO2020080097A1 WO 2020080097 A1 WO2020080097 A1 WO 2020080097A1 JP 2019038729 W JP2019038729 W JP 2019038729W WO 2020080097 A1 WO2020080097 A1 WO 2020080097A1
Authority
WO
WIPO (PCT)
Prior art keywords
fin
width direction
flat
fins
length
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.)
Ceased
Application number
PCT/JP2019/038729
Other languages
English (en)
Japanese (ja)
Inventor
佑介 紫垣
太一 浅野
翔太 寺地
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
Denso Corp
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 Denso Corp filed Critical Denso Corp
Publication of WO2020080097A1 publication Critical patent/WO2020080097A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • 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
    • 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
    • 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
    • F28F1/30—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 being attachable to the 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
    • 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
    • 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
    • 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
    • F28F1/42—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being both outside and 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
    • 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
    • F28F3/06—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being attachable to the 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
    • F28F3/00—Plate-like or laminated elements; Assemblies of plate-like or laminated elements
    • F28F3/08—Elements constructed for building-up into stacks, e.g. capable of being taken apart for cleaning

Definitions

  • the present disclosure relates to a fin formed by bending a metal plate in a wavy shape.
  • Patent Document 1 Conventionally, there is a drone cup heat exchanger described in Patent Document 1.
  • a plurality of tubes forming the heat exchanger are formed by joining the joint portions of the pair of drone cup plates so as to face each other. Fins for increasing the contact area with the refrigerant are arranged inside the pair of Delon cup plates.
  • the fin described in Patent Document 1 has a structure in which peaks and valleys are alternately formed from one end to the other end. When the direction from one end of the fin to the other end is the width direction, flat portions parallel to the width direction are formed at both ends of the fin.
  • the fin as described in Patent Document 1 is formed by sandwiching a thin metal plate between two forming rollers.
  • a fin having flat portions at both ends as described in Patent Document 1 flat portions having no unevenness are formed at both axial end portions, and unevenness is formed on portions other than the flat portions.
  • a forming roller having an uneven portion is used. The length from one flat portion to the other flat portion of the roller is determined by the length of the fin in the width direction.
  • An object of the present disclosure is to provide a fin that can reduce manufacturing costs.
  • a fin according to one embodiment of the present disclosure is a fin formed by bending a metal plate in a wavy shape, and the direction in which the wavy shape is bent in the fin is the width direction, and the fin is formed by bending the wavy shape.
  • the bent portion is a portion in which the bent portion and the valley portion are alternately formed, first flat portions parallel to the width direction are formed at one end and the other end of the bent portion in the width direction, respectively.
  • a second flat portion parallel to the width direction is further formed in the middle part from one end to the other end.
  • this structure by cutting the fins at the second flat portion, it is possible to form a plurality of fins having different lengths in the width direction. Therefore, since it is possible to mold a plurality of types of fins having different lengths in the width direction only by preparing a forming roller for forming the fins having the above-mentioned configuration, it is not necessary to prepare a plurality of types of forming rollers. Only the manufacturing cost can be reduced.
  • FIG. 1 is a perspective view showing a schematic configuration of a drone cup heat exchanger according to an embodiment.
  • FIG. 2 is a plan view of the tube in FIG.
  • FIG. 3 is a sectional view taken along the line III-III in FIG. 2 and is an enlarged view of the vicinity of the joint portion of the tube.
  • FIG. 4 is a cross-sectional view showing a cross-sectional structure of the fin provided in the tube of the embodiment.
  • FIG. 5 is a figure which shows typically the equipment which manufactures the fin of embodiment.
  • FIG. 6 is a plan view showing a planar structure of the forming roller of the embodiment.
  • FIG. 7 is a cross-sectional view showing an example of the fin manufacturing method of the embodiment.
  • FIG. 1 is a perspective view showing a schematic configuration of a drone cup heat exchanger according to an embodiment.
  • FIG. 2 is a plan view of the tube in FIG.
  • FIG. 3 is a sectional view taken along the line III-III in FIG. 2 and is an
  • FIG. 8 is sectional drawing which shows an example of the manufacturing method of the fin of embodiment.
  • FIG. 9 is a sectional view showing a sectional structure of a fin of another embodiment.
  • FIG. 10 is a sectional view showing a sectional structure of a fin of another embodiment.
  • the Delon cup heat exchanger 1 according to the embodiment (hereinafter, also simply referred to as “heat exchanger 1”) has a configuration as shown in FIGS. 1 to 3, for example.
  • the drone cup heat exchanger 1 is configured by stacking hollow tubes 2 having a so-called draw cup type structure in multiple stages, and a fluid flowing inside the hollow portion of the tube 2 (the present embodiment In this case, heat is exchanged between the refrigerant) and the fluid (air in this embodiment) flowing on the surface of the tube 2.
  • the Delon cup heat exchanger 1 is used, for example, in an oil cooler, an evaporator, an intercooler, a radiator, or the like.
  • the Delon cup type heat exchanger 1 of the present embodiment includes a pair of Delon cup plates 2a and 2b which are joined together in the middle of the tube 2 having a flat cross section.
  • the corrugated fins 3 are laminated and disposed with the corrugated fins 3 interposed therebetween, and are integrally brazed in a vacuum brazing or an atmosphere furnace.
  • the tubes 2 and the corrugated fins 3 are stacked and arranged in the vertical direction (vertical direction in FIG. 1). Further, an air flow path FP1 through which air flowing in a direction indicated by an arrow A in FIG. 1 passes is formed in a gap between the tubes 2 where the corrugated fins 3 are provided.
  • the direction in which the tubes 2 are stacked (the vertical direction in FIGS. 1 and 3) is referred to as the “stacking direction”. Further, as shown by an arrow A in FIG. 1, which is orthogonal to the stacking direction, a direction in which air, which is one of the fluids for heat exchange, flows (vertical direction in FIG. 2, lateral direction in FIG. 3) is referred to as “air flow direction”. ".
  • the direction orthogonal to the stacking direction and the air flow direction (the left-right direction in FIG. 2) is referred to as the “refrigerant flow direction”, which is the direction in which the refrigerant that is the other fluid that performs heat exchange flows.
  • the drone cup plates 2a and 2b are press-molded with a brazing material clad on the surface of an aluminum plate or a copper plate, and are laminated so as to form a hollow portion inside. Further, as shown in FIG. 2, communication holes 2c, 2d are formed in the drone cup plates 2a, 2b so that the hollow portions serve as fluid flow passages.
  • the flow passage FP2 provided inside the tube 2 is formed in a substantially U shape.
  • the drone cup heat exchanger 1 is provided with an inflow port 5a and an outflow port 5b at positions corresponding to the communication holes 2c and 2d of the end plate 5.
  • the refrigerant flowing into the heat exchanger 1 from the inflow port 5a flows through the air passage FP1 between the tubes 2 while flowing through the communication hole 2c of each tube 2 through the substantially U-shaped flow passage FP2. Heat is exchanged with each other, flows through the communication hole 2d, and returns from the outlet 5b of the heat exchanger 1 to the circuit.
  • the pair of drone cup plates 2a, 2b are connected to one side 2f on the downstream side (the upper side in FIG. 2) in the air flow direction during assembly. Then, the pair of drone cup plates 2a and 2b are bent so as to face each other so that the one side 2f serves as the rotation axis, and as shown in FIG. 3, the opposite side of the one side 2f is the upstream side in the air flow direction.
  • the joint portions 2h and 2i of each plate provided on one side 2g contact each other.
  • the tube 2 is formed by joining the contact surfaces of the joint portions 2h and 2i by an arbitrary joining method such as brazing.
  • one of the pair of drone cup plates 2a and 2b which is arranged on the lower side in the stacking direction, has a flat plate shape and is arranged on the upper side in the stacking direction.
  • the other draw cup plate 2a has a convex shape which is processed so as to be convex outward.
  • one of the drone cup plates 2b is formed in a linear shape along the air flow direction, and the other of the drone cup plates 2a is formed in a convex shape protruding upward in the stacking direction.
  • Inner fins 4 are installed inside the tube 2.
  • the fins 4 are formed by bending a thin metal plate into a wavy shape.
  • the direction indicated by the arrow X in FIG. 3, that is, the direction in which the fin 4 is bent in a wave shape is also referred to as “width direction X”.
  • a portion in which the crests 401 and the troughs 402 are alternately formed by being bent in a wave shape is also referred to as a “bent 40”.
  • a flat portion 41 is formed at one end of each bent portion 40 in the width direction X.
  • a flat portion 41 is similarly formed on the other end of the bent portion.
  • the flat portion 41 is formed so as to extend parallel to the width direction X.
  • each flat portion 41 in the width direction X is set to "L10".
  • the fins 4 are arranged inside the tube 2, that is, in the flow path FP2.
  • the fin 4 increases the contact area with the refrigerant in the flow path FP2. As a result, heat is efficiently transferred to the refrigerant flowing through the flow path FP2.
  • the fin 4 is formed by cutting the fin 6 shown in FIG. As shown in FIG. 4, the fins 6 are formed by bending a thin metal plate into a wave shape.
  • a portion in which the ridge portions 11 and the valley portions 12 are alternately formed by being bent in a wave shape is also referred to as a “bent portion 10”.
  • Flat portions 20 and 21 are formed at one end 13 and the other end 14 of the bent portion 10 in the width direction X, respectively.
  • the flat portions 20 and 21 are formed so as to extend parallel to the width direction X.
  • the length of the flat portions 20 and 21 in the width direction X is set to "L10".
  • the flat portions 20 and 21 correspond to the first flat portion.
  • a flat portion 30 is formed in the middle of the bent portion 10 from one end 13 to the other end 14. Like the flat portions 20 and 21, the flat portion 30 is formed so as to extend parallel to the width direction X. The length of the flat portion 30 in the width direction X is set to "L11". The length L11 of the flat portion 30 is equal to the length L10 of the flat portions 20 and 21. In the present embodiment, the flat portion 30 corresponds to the second flat portion.
  • the length from one end 13 of the bent portion 10 to one end 31 of the flat portion 30 is set to "L20".
  • the length from the other end 32 of the flat portion 30 to the other end 14 of the bent portion 10 is set to "L21”.
  • the relationship of “L20> L21” is established between the length L20 and the length L21.
  • the equipment for manufacturing the fin 6 includes a material M, a supporting roller R10, forming rollers R21 and R22, and straightening rollers R31 and R32.
  • the material M is formed by winding a flat metal plate 100, which is a material of the fin 6, into a cylindrical shape.
  • the material M is arranged with its central axis m1 along the depth direction of the paper surface, and rotates around the central axis m1 in the clockwise direction in FIG. As a result, the metal plate 100 is sent to the support roller R10.
  • the supporting roller R10 rotates while supporting the metal plate 100 from the lower side, and sends the metal plate 100 to the forming rollers R21 and R22. After passing through the support roller R10, the metal plate 100 is in a substantially horizontal state. Processing oil is supplied from the oil supply units S1 and S2 to the metal plate 100 that has passed through the support roller R10. The processing oil is for reducing friction between the forming rollers R21 and R22 and the metal plate 100.
  • the forming rollers R21 and R22 are for forming the corrugated metal plate 100 into the fins 6 by sandwiching the metal plate 100 in the vertical direction.
  • the forming rollers R21 and R22 are both rollers having a substantially columnar shape, and are arranged with their central axes m21 and m22 along the depth direction of the drawing.
  • the forming roller R21 arranged above rotates around its central axis m21 in the counterclockwise direction in FIG.
  • the forming roller R22 arranged on the lower side is rotated around its central axis m22 in the clockwise direction in FIG.
  • an uneven portion 110 and flat portions 111 to 113 are formed on the outer peripheral surface of the forming roller R21.
  • the concavo-convex portion 110 is a portion in which concave portions and convex portions are alternately formed in a direction parallel to the central axis m21.
  • the plane portions 111 to 113 are flat portions in which no concave portion and convex portion are formed.
  • the plane portions 111 and 112 are formed at both ends of the forming roller R21 in the direction parallel to the central axis m21.
  • the plane portion 113 is formed in the middle of the uneven portion 110.
  • the structure of the forming roller R22 is substantially the same as that of the forming roller R21, detailed description thereof will be omitted.
  • the uneven portion 110 of the forming rollers R21 and R22 causes a portion corresponding to the bent portion 10 of the fin 6.
  • the metal plate 100 is formed, and the flat portions 111 to 113 form the portions corresponding to the flat portions 20, 21, 30 of the fin 6 on the metal plate 100.
  • the metal plate 100 passes while the portions corresponding to the flat portions 20 and 21 of the fin 6 are sandwiched by the flat portions 111 and 112 of the forming rollers R21 and R22, the metal plate 100 is less likely to warp. ing.
  • the correction rollers R31 and R32 are arranged with a predetermined gap in the vertical direction.
  • the straightening rollers R31 and R32 sandwich the metal plate 100 that has passed through the forming rollers R21 and R22, that is, the corrugated metal plate 100 in the up-down direction by the gap between them, and thereby the thickness of the fin 6 is increased. Is to be uniform throughout.
  • a cutting step of cutting the fins 6 as shown in FIG. 7 or 8 is performed.
  • a fin 60 having a length “L10 + L20 + L11” can be obtained.
  • a fin 61 having a length “L11 + L21 + L10” can be obtained.
  • two types of fins 60 and 61 having different lengths in the width direction X can be formed. If such a fin 6 is used, two types of fins 60 and 61 having different lengths in the width direction X can be obtained by simply preparing a forming roller for forming the fin 6, that is, forming rollers R21 and R22 shown in FIG. Since it is possible to mold, it is possible to reduce the manufacturing cost because it is not necessary to prepare two types of molding rollers.
  • the above-mentioned embodiment can also be implemented in the following forms.
  • the length of the flat portion 30 of the fin 6 can be appropriately changed. If the length of the flat portion 30 is equal to or longer than the length L10 of the other flat portions 20 and 21, the fin 6 is cut at the portion of the flat portion 30 to show the fin 60 shown in FIG. 7 and the fin 60 shown in FIG. It is possible to mold the fins 61 to be formed.
  • the length L11 of the flat portion 30 of the fin 6 may be set to be twice the length L10 of the other flat portions 20 and 21. According to such a configuration, by cutting the flat portion 30 along the chain double-dashed line C shown in FIG. 9, that is, by cutting the flat portion 30 at the center, not only the fin 60 shown in FIG. The fin 61 shown in FIG. 8 can be obtained. If the length L11 of the flat portion 30 is set to be twice or more the length L10 of the other flat portions 20 and 21, the same action and effect can be obtained.
  • -A plurality of flat portions 30 may be formed in the middle of the bent portion 10 of the fin 6, instead of the single flat portion 30. According to such a configuration, not only two types of fins but also three or more types of fins can be obtained from the fin 6. -As shown in FIG. 10, the flat part 41 of the fin 4 may be inclined so as to form a predetermined angle with respect to the width direction X. With such a configuration, it is possible to prevent the flat portion 41 of the fin 4 from riding on other components when the heat exchanger 1 is assembled.

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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)

Abstract

L'invention concerne une ailette (6) formée par cintrage d'une feuille métallique en une forme d'onde, des premières parties plates (20, 21) parallèles au sens de la largeur étant respectivement formées à une extrémité et à l'autre extrémité d'une partie cintrée (10) dans le sens de la largeur, le sens de la largeur étant le sens de pliage en une forme d'onde dans l'ailette, et la partie cintrée étant la portion où des pics (11) et des vallées (12) sont formés en alternance par le cintrage en une forme d'onde, et une seconde partie plate (30) parallèle au sens de la largeur étant formée dans une portion de la partie cintrée à mi-chemin d'une extrémité à l'autre extrémité de cette dernière.
PCT/JP2019/038729 2018-10-19 2019-10-01 Ailette Ceased WO2020080097A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2018-197149 2018-10-19
JP2018197149A JP2020062673A (ja) 2018-10-19 2018-10-19 フィン

Publications (1)

Publication Number Publication Date
WO2020080097A1 true WO2020080097A1 (fr) 2020-04-23

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ID=70283065

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2019/038729 Ceased WO2020080097A1 (fr) 2018-10-19 2019-10-01 Ailette

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JP (1) JP2020062673A (fr)
WO (1) WO2020080097A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4624768B1 (fr) * 1963-05-15 1971-07-16
JPH07280484A (ja) * 1994-04-06 1995-10-27 Calsonic Corp 積層型熱交換器
US20040231386A1 (en) * 2000-04-19 2004-11-25 Paolo Perotti High thermal efficiency heat exchanger, partially corrugrated sheet metal for heat exchangers, plant and procedure for obtaining said partially corrugated sheet metal
WO2018135152A1 (fr) * 2017-01-20 2018-07-26 株式会社デンソー Ailette, échangeur de chaleur à ailette et procédé de fabrication d'ailette

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4624768B1 (fr) * 1963-05-15 1971-07-16
JPH07280484A (ja) * 1994-04-06 1995-10-27 Calsonic Corp 積層型熱交換器
US20040231386A1 (en) * 2000-04-19 2004-11-25 Paolo Perotti High thermal efficiency heat exchanger, partially corrugrated sheet metal for heat exchangers, plant and procedure for obtaining said partially corrugated sheet metal
WO2018135152A1 (fr) * 2017-01-20 2018-07-26 株式会社デンソー Ailette, échangeur de chaleur à ailette et procédé de fabrication d'ailette

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