COOLING SYSTEM OF ELECTRONIC APPARATUS

摘要

PROBLEM TO BE SOLVED: To provide a cooling system of an electronic apparatus capable of shortening a period of forced circulation while minimizing stopping of natural circulation, and carrying out smooth change from the natural circulation to the forced circulation for performing stable operation.SOLUTION: The cooling system, wherein an evaporator 20 and a condenser 22 are connected to each other via a gas pipe 26 and a liquid pipe 24, includes: a bypass pipe 28 arranged as a bypass flow passage in the middle of the liquid pipe 24; a pump 30 arranged in the bypass pipe 28 to forcibly circulate a refrigerant in an amount necessary for a natural circulation mechanism; a back-flow prevention mechanism 27 arranged in the bypass corresponding part of the liquid pipe 24 bypassed by the bypass pipe 28; a refrigerant gas pressure sensor 32A measuring a refrigerant gas pressure flowing into the condenser 22; a refrigerant liquid pressure sensor 32B measuring a refrigerant liquid pressure flowing out from the condenser 22; and a controller 17 driving the pump 30 when a measurement value A of the refrigerant gas pressure sensor 32A becomes larger than a measurement value B of the refrigerant liquid pressure sensor 32B.