By motor structure can be divided into: single-phase capacitor type, single-phase shaded pole type, three-phase induction, DC and AC and DC dual-use series excitation rectifier type electric fan.
According to the use of classification can be divided into: household fans and industrial exhaust fans. Household electric fan: ceiling fan, desk fan, floor fan, wall fan, top fan, ventilation fan, fan, air-conditioning fan (i.e., cooling fan), etc.; desk fan and shaking head and not shaking head of the points, there are also turning the page of the fan; floor fan in the shaking head, turning the page.
Industrial exhaust fan: mainly used for forced air convection, ventilation.
Expanded Information:
The main component of an electric fan is: an AC motor. It works on the principle that an energized coil is rotated by a force in a magnetic field. Electrical energy is converted into mechanical energy, and at the same time, due to the coil resistance, so it is inevitable that part of the electrical energy to be converted into heat energy. In addition, DC motors, DC brushless motors and other low-power motors are increasingly widely used in small electric fans.
When the electric fan works (assuming that there is no heat transfer between the room and the outside world) the temperature in the room not only does not decrease, but increases. To analyze the reasons for the increase in temperature: electric fan work, due to the current through the coil of the fan, the wire is resistive, so it will inevitably produce heat to the outside exothermic, the temperature will naturally rise.
The human body has a lot of sweat on the surface of the body, when the fan works, the indoor air will flow, so it will be able to promote rapid evaporation of sweat, combined with the "evaporation needs to absorb a lot of heat", so people will feel cool.
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