Little Knowledge About The Brushless Motor Of The Vacuum Cleaner

　　Brushless motors are the heart of vacuum cleaners. The main types of vacuum cleaner motors are dry vacuum cleaner motors (THRU-FLOW), and dry and wet vacuum cleaner motors. The vacuum cleaner motor consists of two parts: the motor part and the fan part. Since the vacuum cleaner motor has high requirements on the speed, generally 20,000-30,000 rpm, the motor mainly uses a series motor, also known as a series motor.

　　How brushless vacuum cleaner motors work

　　It is mainly composed of the stator, rotor, front and rear covers (covers), and cooling fan blades. The stator is composed of stator iron core and windings set on the pole pieces. Its function is to generate excitation magnetic flux, conduct magnetic flux and support the front and rear covers. ; The rotor is composed of a rotor core, shaft, armature winding, and commutator, its function is to ensure and generate continuous electromagnetic torque, drive the load to do work through the rotating shaft, and convert the electrical energy into mechanical energy; drive the lower wind silo to rotate at high speed Then, the air in the dust bucket is quickly drawn out, a vacuum is formed in the dust bucket, and dust and other sundries are inhaled through the vacuum hose. The front and rear covers play the role of supporting the armature and connecting and fixing the stator and the rotor into one. Among them, the rotating shaft, and front and rear covers must have sufficient strength to prevent the resonance between the armature and the cover, causing vibration and danger. Generally, there are rolling or sliding bearings in the front and rear covers.

　　Why do vacuum cleaners smell bad?

　　There are two possibilities, one is the smell of the vacuum cleaner itself. The vacuum cleaner motor is a high-speed rotating motor with a brush inside, which will generate sparks during operation, ionize part of the air, and generate a small amount of ozone; in addition, the motor will generate heat, which will act at high temperatures. The insulating paint in it will also emit an odor. Second, the vacuum cleaner inhales not only dust, but also a lot of dander from the human body, which is accumulated in the dust bag for a long time, becoming the best environment for bacteria to multiply, and it will also produce odor. The former is unavoidable, and the latter is to clean the dust bag every time it is used up.