To provide a loop heat pipe capable of starting smoothly even if a hydraulic fluid remains in a wick incorporated in an evaporator when starting.
A loop heat pipe 10 includes an evaporator 1 heated externally, a condenser 2 for radiating heat to the outside, a steam pipe 3 for feeding the steam 7 of hydraulic fluid from the condenser 2 to the evaporator 1, and a liquid pipe 4 for feeding the hydraulic fluid 6 from the condenser 2 to the evaporator 1 where the evaporator 1 incorporates a wick 5. A heat storage material 11 is disposed at the outer wall of the steam pipe 3 of the evaporator 1, and by setting the temperature rising rate of the liquid pipe side 4 of the evaporator 1 of an initial operation higher than that of the steam pipe 3 side, the hydraulic fluid of a liquid phase remaining in the evaporator 1 is discharged from the evaporator 1 within a short period of a time to improve a startup property. The evaporator 1 becomes the cooling device 30 of a heating element when it is attached to the heating element 21 on a circuit board 20 incorporated into the electronic apparatus.
OGATA SHIN
UCHIDA HIROMOTO
KIMURA TAKAHIRO
| JP2008255945A | 2008-10-23 | |||
| JP2002181469A | 2002-06-26 |
| US20090288801A1 | 2009-11-26 | |||
| US20090288801A1 | 2009-11-26 |
Koichi Itsubo
Higuchi Souji
Ryu Kobayashi