MULTI-STAGE HEAT SINK, COOLING SYSTEM WITH THE SAME AND METHOD FOR CONTROLLING THE SAME

摘要

A multistage heat sink includes at least one step surface in a surface direction to inject cooling air. The step surface is one among a stair-shaped step surface with a plurality of heat sinks with curved parts, a step surface with a plurality of streamlined heat sinks with smooth curved parts, and a step surface with a plurality of heat radiation fins with different height differences. A cooling system including the multistage heat sink increases a heat discharge amount by cooling heat with the multistage heat sink and an air injecting unit. [Reference numerals] (400) Control unit