US 12,222,166 B2
Heat-transfer member and cooling system
Yasuyuki Takata, Fukuoka (JP); Koji Takahashi, Fukuoka (JP); Biao Shen, Fukuoka (JP); Junji Nunomura, Hokkaido (JP); Yoichiro Bekki, Aichi (JP); and Akihiro Fukatsu, Aichi (JP)
Assigned to Kyushu University, National University Corporation, Fukuoka (JP); and UACJ Corporation, Tokyo (JP)
Appl. No. 17/600,752
Filed by KYUSHU UNIVERSITY, NATIONAL UNIVERSITY CORPORATION, Fukuoka (JP); and UACJ Corporation, Tokyo (JP)
PCT Filed Apr. 30, 2020, PCT No. PCT/JP2020/018220
§ 371(c)(1), (2) Date Oct. 1, 2021,
PCT Pub. No. WO2020/226115, PCT Pub. Date Nov. 12, 2020.
Claims priority of application No. 2019-089090 (JP), filed on May 9, 2019.
Prior Publication US 2022/0196340 A1, Jun. 23, 2022
Int. Cl. F28D 15/04 (2006.01); C09K 5/04 (2006.01); H01L 23/427 (2006.01); H05K 7/20 (2006.01)
CPC F28D 15/046 (2013.01) [C09K 5/048 (2013.01); H01L 23/427 (2013.01); H05K 7/20336 (2013.01); F28F 2260/00 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A heat-transfer member configured for use in a cooling system, in which an alcohol serves as a coolant, wherein:
the heat-transfer member has:
a heat-receiving surface configured to receive heat from a heat-generating body; and
a heat-dissipating surface configured to dissipate, to the coolant, the heat received at the heat-receiving surface;
a plurality of pores are defined on the heat-dissipating surface and an average pore diameter of the pores is 5 nm or more and 1,000 nm or less;
the pores have an average depth of 0.05 μm or more and 10 μm or less; and
the heat-dissipating surface has a coolant-philic part that exhibits a contact angle with respect to ethanol of 40° or less.
 
6. The heat-transfer member according to claim 1, wherein the average pore depth is 0.1-10 μm.