2026-04-10Views：
The classification of air compressors can be carried out from multiple dimensions, including working principle, lubrication method, performance, use and form. The following is a detailed classification:
classification by working principle:
volumetric air compressor: Compress gas by changing the volume of the working chamber, including piston type, scroll type, screw type, etc.
Power type air compressor: by increasing the speed of the gas and then converting its kinetic energy into pressure energy, centrifugal air compressor belongs to this type.
Thermal air compressor: through thermal energy conversion to compress gas, such air compressor is relatively rare.
Classified by lubrication method:
oil-free air compressor: No lubricating oil is used in the compression process, and it is suitable for occasions with high quality requirements for compressed air.
Oil (or engine oil) lubricated air compressors: The use of lubricating oil to lubricate and cool the compression process is common in industrial applications.
Classification by performance:
low noise air compressor: designed to reduce the operating noise, suitable for noise-sensitive environment.
Variable frequency air compressor: The operating frequency can be adjusted according to demand to achieve energy saving and pressure stability control.
Explosion-proof air compressor: special design is adopted to prevent danger in flammable and explosive environment.
Classification by purpose:
power with air compressor: mainly used to provide compressed air as a power source.
Refrigeration air compressor: used as a compressed refrigerant in the refrigeration system.
Ventilation air compressor: used for ventilation or gas replacement.
Other special air compressors: air compressors for specific applications such as sandblasting machines and injection molding machines.
Classification by form:
fixed air compressor: installed in a fixed position, not movable.
Closed air compressor: all parts are enclosed in a shell to reduce environmental pollution.
Mobile air compressor: installed on a movable platform, easy to use in different places.
It should be noted that the same air compressor may belong to multiple classifications at the same time, such as a mobile screw air compressor, which is both mobile and volumetric. These classification methods help users choose the most suitable air compressor type according to specific needs.
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