To effectively generate boiling in an evaporative cooling device.
The evaporative cooling device 10 includes: a housing 12 having an flow inlet 14 in which a refrigerant flows, a flow outlet 16 from which the refrigerant after heat transfer with boiling flows, and a channel part 18 which is surrounded with a peripheral wall and through which the refrigerant flows; and a vaporizer part which has a plurality of fins 20 protruding from an inner wall of the housing 12 in the channel part 18 and transferring heat of an inverter 8, and in which the refrigerant flowing in from the flow inlet 14 flows through gaps between the plurality of fins 20 toward the flow outlet 16 and boils on heat transfer surfaces of surfaces of the fins 20. The fins 20 have on the heat transfer surfaces, fine irreguralities 22, 24, differing in fineness of unevenness according to the degree of overheating of the refrigerant on the heat transfer surfaces. The fins 20 may includes in an inner wall of a recess having a large diameter, a large-small composite recess having irreguralities finer than the diameter.
FURUTA NORIBUMI
ABE NOBUYUKI
OTA HARUHIKO
NIIMOTO YASUHISA
SUZUKI KOICHI
YUKI KAZUHISA
KAWANAMI OSAMU
UNIV KYUSHU
UNIV OF SCIENCE TOKYO
HYOGO PREFECTURE