How to make the use of 220 v cooling fan for a long time?

"220V Cooling Fan" according to the motor structure can be divided into: single-phase capacitor type, shaded pole single-phase, three-phase induction, DC and AC and DC series wound commutator fan.
"220V Cooling Fan" can be divided according to use classification: Household fans and industrial exhaust fan.
"220V Cooling Fan" press out air classification can be divided into: axial fans, centrifugal fans and cross-flow fan and the like.
⑴ Household fans: a ceiling fan, table fan, stand fan, wall fan, roof fan, fan, fan page, air-conditioning fan (ie cooling fans) and the like; and there were desk fan shook his head and shook his head no points, but also The fan page; stand fan in his head, turn the page. There is also a breeze small fan, is specialized in the nets hanging inside, summer sleep at night, it suddenly opened breezy, can secure in sleep, you will not get sick. Tips, fan work easily adhere to dust in the air, using the process should be timely cleaned better off.
⑵ industrial exhaust fan: mainly used for forced air convection purposes. Fans with long after, the following blades are easily stained a lot of dust. This is a fan at work, due to the friction between the blade and the air leaving the fan to bring the static nature of the charged object can attract small and light objects, which can absorb small indoor floating dust caused.