Fan and compressor similarities and differences
The former is often called turbine or axial turbine compressor, which is often called centrifugal air compressor.
Usually single-stage compression, applied to low-voltage applications.
Although the blower can be designed for secondary and tertiary compression, but due to low efficiency.
Two identical and symmetrical rotors work in a flat-ended cylindrical housing, and the rotor is kept in sync by gear.