There are many types of air compressors (air compressors).

1. According to the working principle, it can be divided into three categories: volumetric, dynamic (speed or turbine), and thermal compressors.
Air compressor classification
Air compressor classification
2. According to the lubrication method, it can be divided into oil-free air compressor and oil-lubricated air compressor.
3, according to performance can be divided into: low noise, variable frequency, explosion-proof air compressors.
4. It can be divided into refrigerator compressors, air-conditioning compressors, refrigeration compressors, oilfield compressors, natural gas filling stations, rock drills, pneumatic tools, vehicle brakes, door and window opening and closing, and textile machinery according to the purpose Use, tire inflation, plastic machinery compressors, mining compressors, marine compressors, medical compressors, sandblasting and painting.
5. According to the type, it can be divided into fixed type, mobile type and closed type [1].
Positive displacement compressor-a compressor that directly relies on changing the gas volume to increase gas pressure.
Piston compressor-is a positive displacement compressor, its compression element is a piston,
Piston air compressor
Piston air compressor
Reciprocating motion in the cylinder.
Rotary compressor-is a positive displacement compressor, compression is achieved by the forced movement of rotating elements.

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