A good motor not only has a long life but is not easily attenuated

Update:02-11-2018
Summary:

A good motor not only has a long life but is not easily […]

A good motor not only has a long life but is not easily attenuated. Many friends here have to ask, what is attenuation? Attenuation is like when a new cigarette machine is bought. At that time, basically, the soot can be sucked away, and the suction rate is high. However, after a few years, under normal maintenance, the motor suction rate is slowly lowered. This is attenuation. You can judge from the following points:

Now the motor casing has two forms, one is the fully enclosed type as shown in the left figure above, and the other is the semi-closed type as shown in the right figure. The dust-proof performance of the fully enclosed motor is much better, and the semi-closed soot Lampblack machine motor After the break-in, it is easy to breed the sludge, and over time, the motor speed will be reduced, the noise will increase, and the life will be shortened. Semi-closed motors are less expensive, and only some very cheap hoods are still in use today, and most hoods have used fully enclosed motors.

Many friends don't know much about this. We all know that the motor is divided into a rotor and a stator. The rotor is the part that rotates in the middle. The stator is the part that generates a rotating magnetic field around the cylinder cylinder. On the stator, we can see that there are a lot of pure enamelled copper wires. The copper wires are wound around the stator core of Handan Iron and Steel, and many groups are wrapped. This group number is the stack number of the motor.

Ordinary motors are 16 or 20 sets of coils. Good motors use 24, 28 or 32 sets of coils. The more coils, the more stable the speed, and the lower the temperature, because the heat is small. Longer life.