One for wind power and the other for wind direction.
Electric fan, Japan and South Korea known as fan fan machine, modern fan to electricity as energy, so also known as electric fan, Taiwanese known as electric wind, is a kind of electricity to drive the fan blade rotation, to achieve to make the air accelerated circulation of household appliances, mainly used for cool relief and air circulation.
Widely used in homes, offices, stores, hospitals and hotels and other places. The fan is mainly composed of fan head, wind blade, mesh cover and control device and other components. The fan head includes the electric motor, front and rear end caps and the oscillating head air supply mechanism. The main component of the electric fan is the AC motor. Its working principle is that the energized coil is rotated by the force in the magnetic field.
Electrical energy is converted into mechanical energy, and at the same time due to the coil resistance, so inevitably part of the electrical energy to be converted into heat energy. Modern household fans can be divided into ceiling fans, desk fans, ventilation fans, rotary fans, air-conditioning fans (i.e., cold fans) and so on according to the structure. Many electric fans also apply electronic technology and microcomputer technology, can be remotely controlled, but the principle of its main drive.