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.
The price of water-lubricated oil-free low-pressure screw air compressor of Shanghai Granklin Group varies with model, specification, power and other factors. At the time of purchase, it is recommended to contact the official channels of the Grencklin Group or an authorized dealer for accurate quotations and details.
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