fan
Electric fans, Japan and South Korea called fan fan, modern fans to electricity for energy, it is also known as electric fans, referred to as fans, Taiwanese called electric wind. The fan is a machine that drives the fan to rotate, to achieve the air to accelerate the flow of machinery, mainly for the cool Jieshu and air circulation. The fan is the power to drive the fan rotation to achieve the air to speed up the flow of household appliances. Fan This machine has a long history, the Chinese Western Han Dynasty Changan famous mechanic Ding slowly invented the seven rounds of fans, which is probably in a wheel with seven fan wheel fan, to maneuver the wheel running. People feel cool The main principle is to drive the fan rotation, accelerate the circulation of air around the human body, the body from the skin pores to speed up the evaporation of water, due to the evaporation of water carried by the heat increased, people feel cool. ...