(1) According to the principle of action: volumetric type and velocity type (turbine type)
(2) Press and send media classification: air compressor, nitrogen compressor, oxygen compressor, hydrogen compressor, etc
(3) Classified by exhaust pressure: low pressure (0.3-1.0MPa) Medium pressure (1.0-10MPa) High pressure (10-100MPa) Ultra-high pressure (> 100MPa)
⑷ Classified by structure type: compressor ---- displacement type, speed type. Positive displacement ---- rotary (including screw type, slide type, Roots type), reciprocating (including piston type, diaphragm type). Velocity type ---- centrifugal, axial, jet, mixed flow.
