Why does the small fan suddenly stop working?

The small fan suddenly stopped working because:

1, considering how long the electric fan has been used, the motor of the electric fan will wear out, and the shaft sleeve of the motor is easy to burn out after wear. If the motor is used for a long time, the internal resistance of the motor will also increase and the load capacity will decrease, resulting in the inability to drive the fan blades to rotate. Also, the axial clearance of the motor shaft is too large, which will also cause the load to be unable to drag. Most people may encounter the following phenomenon: the electric fan does not turn, you pull it by hand or wait for a long time to turn it slowly, and after a period of time, you find that it does not move when you pull it by hand.

2. The possible reason for this phenomenon is that the starting capacitor in the fan becomes smaller, which is not enough to make the motor rotate. When the fan doesn't turn, the first thing that comes to mind is that the motor can't be lubricated. When the fan blades are installed on it and the motor can't be dragged, it will be found that the rotating shaft can still operate normally after being removed, indicating that the fan motor is not broken.

An electric fan is a kind of household appliance, which drives the fan blades to rotate through a motor to cool off the heat and clear the air. Electric fans are mainly composed of fan heads, blades, mesh covers and control devices, which are widely used in families, classrooms, offices, shops, hospitals and hotels. The main components of the electric fan are: AC motor. Its working principle is that the electrified coil is forced to rotate in the magnetic field. When electric energy is converted into mechanical energy, due to the existence of coil resistance, it is inevitable that some electric energy will be converted into heat energy.