Heat pipe heat sink cooling principle:

Heat pipe heat sink, heat pipe is a kind of heat conducting element which relies on the phase change of internal working medium for efficient heat transfer, the temperature uniformity of the heat sink base and the efficiency of fin are realized by embedding fin in the heat sink base, so as to realize the overall performance of heat sink, common types of aluminum, copper soldering for heat sink has been can not meet the requirement of the thermal resistance, need to use new heat sink with better performance.

The heat pipe heat sink is composed of sealing tube, suction core and steam channel.The suction core is surrounded on the wall of the sealed tube and impregnated with saturated volatile liquid.The liquid can be distilled water, ammonia, methanol or acetone.The heat pipe heat sink filled with liquid such as ammonia, methanol and acetone still has good heat dissipation ability at low temperature.

When the heat pipe heat sink is running, its evaporation section absorbs the heat generated by the heat source (power semiconductor device, etc.), making the liquid in its wick boil to steam.The heated steam moves from the evaporating section of the heat pipe radiator to its cooling section, where it condenses into a liquid.The condensed liquid is then returned to the evaporation section through the capillary action of the suction core on the wall, so as to repeat the above cycle process of continuous heat dissipation.