BLDC motor is a popular type of motor, which is widely used in household appliances, like air purifiers, due to its simple structure, high efficiency and long life.
The principle is to use direct current to reverse the magnetic pole and drive the rotor to rotate. The rotor of this motor is composed of a permanent magnet and an electromagnetic coil and an electric current passes through the electromagnetic coil when working, generating a magnetic field that causes the permanent magnet to rotate.
Since the motor has no carbon brushes, there are no sparks and no arcs during operation and compared with traditional motors, the service life is longer, the noise is less and the speed is more stable.