US 12,228,351 B2
Heat exchanger and corrugated fin
Keita Morimoto, Kariya (JP); Tomohiko Nakamura, Kariya (JP); Mitsuyoshi Saito, Kariya (JP); Tatsuhiko Nishino, Kariya (JP); Shota Chatani, Kariya (JP); and Toshiya Nagasawa, Kariya (JP)
Assigned to DENSO CORPORATION, Kariya (JP)
Filed by DENSO CORPORATION, Kariya (JP)
Filed on Sep. 13, 2022, as Appl. No. 17/943,246.
Application 17/943,246 is a division of application No. 16/696,767, filed on Nov. 26, 2019, abandoned.
Application 16/696,767 is a continuation of application No. PCT/JP2018/021850, filed on Jun. 7, 2018.
Claims priority of application No. 2017-115290 (JP), filed on Jun. 12, 2017; and application No. 2018-105208 (JP), filed on May 31, 2018.
Prior Publication US 2023/0003467 A1, Jan. 5, 2023
Int. Cl. F28F 17/00 (2006.01); F25B 39/02 (2006.01); F28D 1/053 (2006.01); F28D 21/00 (2006.01); F28F 1/12 (2006.01); F28F 1/32 (2006.01)
CPC F28F 17/005 (2013.01) [F28F 1/128 (2013.01); F25B 39/02 (2013.01); F28D 1/05383 (2013.01); F28D 1/05391 (2013.01); F28D 2021/0085 (2013.01); F28F 1/32 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A heat exchanger that performs heat exchange between a first fluid and a second fluid, the heat exchanger comprising:
tubes which are arranged in one direction and in which the first fluid flows; and
a corrugated fin provided between the tubes, curved to have a wave shape, and configured to promote heat exchange between the first fluid and the second fluid, the second fluid flowing between the tubes, wherein
the corrugated fin includes joints that are joined to the tubes, and fin bodies that are each between and connect the joints which are located next to each other along the wave shape,
the fin body includes a cut-raised portion that has a shape in which a part of the fin body is cut and raised for promotion of heat transfer,
the cut-raised portion includes a cut-raised body that guides the second fluid, and a cut-raised end that is provided on at least one end of the cut-raised portion in the one direction and has a plate shape extending from the cut-raised body,
the cut-raised end has recesses and projections that increase hydrophilicity of a surface of the cut-raised end on at least one side of the cut-raised end in a thickness direction of the cut-raised end,
the recesses and projections of the cut-raised end are configured to promote drainage of water toward the joint or a surface of the tube,
the fin body includes curved connections curved and connected to the joints at opposite ends of the fin body in the one direction,
the fin body includes a cut-raised gap that is provided adjacent to the cut-raised portion by formation of the cut and raised shape of the cut-raised portion,
at least one of the curved connections has a notch extending from the cut-raised gap, and
the notch extends outward of a range of the cut-raised portion in the one direction.