Patent ID: 9074825
Filing Date: 2015-07-07
Classification: F28D,G06F,H01L

Abstract:
1. A heatsink apparatus performing cooling by circulating a working fluid and causing a phase change between a liquid phase and a gas phase, the heatsink apparatus comprising: a heat receiver transferring heat to an internal wall configured to correspond to a surface of an external wall that is provided with a heat generating body; an inlet pipe supplying the working fluid into an interior space of the heat receiver, wherein the inlet pipe extends inwardly beyond an internal surface of the heat receiver that partially defines the interior space; an outlet pipe discharging vapor, generated by vaporizing, by heat from the internal wall, the working fluid supplied into the heat receiver; a heat dissipater provided at a location higher than the heat receiver and dissipating heat of the vapor passing through the outlet pipe to liquefy the vapor into the working fluid; and a check valve provided to the inlet pipe causing the working fluid that is liquefied by the heat dissipater to return to the heat receiver through the check valve, and the check valve causing the working fluid to circulate in a direction without using a pump based on a pressure increase that occurs on an outlet side of the check valve; wherein slits are provided in the internal wall, on a surface surrounded by an external circumference of an opening of the inlet pipe, and wherein the slits are provided radially in a direction from a central axis of the inlet pipe opening.