Commonly used air compressors are piston air compressors, screw air compressors, (screw air compressors are divided into twin screw air compressors and single screw air compressors), centrifugal compressors and sliding vane air compressors, scroll air compressors. Compressors such as CAM, diaphragm and diffusion pumps are not included because of their special use and relatively small size.
Positive displacement compressors – compressors that directly rely on changing the volume of the gas to increase the pressure of the gas.
Reciprocating compressor – is a positive displacement compressor, the compression element is a piston, in the cylinder for reciprocating movement.
Rotary compressor – is a positive displacement compressor, compression is achieved by the forced movement of rotating components.
Sliding vane compressor – is a rotary variable capacity compressor, the axial sliding vane on the eccentric rotor with the cylinder block for radial sliding. The air trapped between the slides is compressed and discharged.
Liquid-piston compressors – are rotary positive displacement compressors in which water or other liquid acts as a piston to compress the gas and then expel the gas.
Roots two-rotor compressor – a rotary positive displacement compressor in which two Roots rotors mesh with each other to trap the gas and transfer it from the intake to the exhaust. No internal compression.
Screw compressor – is a rotary positive displacement compressor, in which two rotors with spiral gears mesh with each other, so that the gas is compressed and discharged.
Velocity compressor – is a rotary continuous flow compressor, in which the high-speed rotating blade accelerates the gas through it, so that the speed can be converted into pressure. This conversion occurs partly on the rotating blade and partly on the stationary diffuser or reflow baffle.
Centrifugal compressors – Speed compressors in which one or more rotating impellers (blades usually on the side) accelerate the gas. The main flow is radial.
Axial flow compressor – a velocity compressor in which the gas is accelerated by a rotor fitted with a blade. The main flow is axial.
Mixed-flow compressors – also velocity compressors, the shape of the rotor combines some of the characteristics of both centrifugal and axial flow.
Jet compressors – use high-speed gas or steam jets to carry away the inhaled gas, and then convert the speed of the gas mixture into pressure in the diffuser.
Air compressor oil is divided into reciprocating air compressor oil and rotary air compressor oil according to the structure of the compressor, and each has three levels of light, medium and heavy load.Air compressor oil can be divided into two categories according to the type of base oil: mineral oil type compressor oil and formed compressor oil.
Post time: Nov-07-2023