What is the function of the fan?

A fan refers to a device that generates wind to cool down in hot weather. It is a device driven by electricity to generate airflow. The fan inside turns into natural wind after being electrified to achieve the effect of cooling. According to the motor structure, the types can be divided into: single-phase capacitive, single-phase shaded pole, three-phase induction, DC and AC/DC series commutator fans. According to the purpose, it can be divided into household electric fans and industrial exhaust fans. (1) Household electric fans: ceiling fans, desk fans, floor fans, wall fans, ceiling fans, ventilation fans, box fans, air-conditioning fans (i.e. cooling fans), etc. Among the fans, there are those who shake their heads, those who don't shake their heads, and those who are fans of frames; Some fans shook their heads and turned pages. There is also a small fan, which is hung in the mosquito net. When you sleep at night in summer, it will blow gently when you open it, so you can sleep peacefully and not get sick. Tips: When the fan is working, it is easy to stick dust in the air. It is best to cut off the power supply and clean it in time during use. ⑵ Industrial exhaust fan: mainly used for forced air convection. The electric fan has been used for a long time, and it is easy to get a lot of dust under the fan blades. This is because when the electric fan is working, due to the friction between the blades and the air, the blades are charged with static electricity, and charged objects can attract light and small objects, thus absorbing tiny dust floating indoors.