How is the air compressor classified?

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.