"Cooling Fan" depending on the evaporation of water, there are two kinds of products, one is wet mesh electric cycle when the air blowing, the water evaporates, the water evaporates while to absorb a lot of heat, air temperature fell by , but the air humidity has increased, and the summer humidity already high, is likely to cause the sweat can not evaporate. Ice play by the cooling effect of air-conditioning fan (cooling fan), and the cooling effect of time better than water. Another is the use of special fiber wet curtain paper evaporator. Evaporator is also a recuperative heat exchange equipment. Temperature low-pressure liquid refrigerant is vaporized in the heat transfer wall at a side heat, so that the other side wall of the heat transfer medium is cooled.