Key Components of Air Compressors

Positive Displacement Air Compressors

Component	Description
Cylinder	Chamber where the compression process takes place by the change in its volume as the piston moves up and down.
Piston	Component located inside the cylinder directly responsible for the compression of air.
Crankshaft	Converts rotational motion generated by the motor to unidirectional motion for the piston.
Connecting Rod	Connects the crankshaft with the piston.
Inlet and exhaust valves	Control the amount of air going in and out of the cylinder.

Component	Description
Helical-lobe rotors	The main elements of this type of compressor where two close clearance helical-lobe rotors turn in synchronous mesh. As the rotors revolve, the gas is forced into a decreasing inter-lobe cavity until it reaches the discharge port.

Component	Description
Rotating impeller	Imparts velocity to the air, which is converted to pressure.