US 11,897,022 B2
Fin, heat exchanger with fin, and method of manufacturing fin
Kenichi Kachi, Kariya (JP); Hisashi Kobayashi, Kariya (JP); Sachi Onaga, Kariya (JP); Kazuhiro Mitsukawa, Kariya (JP); Yoshinori Sakimoto, Kariya (JP); Taichi Asano, Kariya (JP); and Kazutaka Suzuki, Kariya (JP)
Assigned to DENSO CORPORATION, Kariya (JP)
Filed by DENSO CORPORATION, Kariya (JP)
Filed on Jul. 17, 2019, as Appl. No. 16/513,923.
Application 16/513,923 is a continuation of application No. PCT/JP2017/043081, filed on Nov. 30, 2017.
Claims priority of application No. 2017-008229 (JP), filed on Jan. 20, 2017.
Prior Publication US 2019/0337043 A1, Nov. 7, 2019
Int. Cl. B21D 53/02 (2006.01); B21D 13/04 (2006.01); F28F 1/12 (2006.01)
CPC B21D 53/022 (2013.01) [B21D 13/04 (2013.01); F28F 1/126 (2013.01)] 7 Claims
OG exemplary drawing
 
1. A method of manufacturing a corrugated fin in which peak portions and valley portions extending along a first direction are arranged alternately in a second direction perpendicular to the first direction, the method comprising:
preparing a metal plate that has a flat shape;
shaping the metal plate into a corrugated shape by sandwiching the metal plate by a first roller and a second roller, wherein
the shaping includes compressing at least a part of the metal plate that is to be inclined portions by the first roller and the second roller such that a thickness of the metal plate at each apex of the peak portions and the valley portions is larger than a thickness of the inclined portions of the metal plate that connects the peak portions and the valley portions adjacent to each other, thereby the part of the metal plate becomes thin; and
correcting a height of the corrugated fin between the peak portions and the valley portions to uniform the height of the corrugated fin by sandwiching the corrugated fin, in which the peak portions and the valley portions have been formed, between a third roller and a fourth roller after the shaping, such that a thickness at each apex of the peak portions and the valley portions is larger than a thickness of the inclined portions that connect the peak portions and the valley portions adjacent to each other.