Compressor /kəmˈprɛsər/ – a machine that compresses air or gas to an excess pressure of at least 0.015 MPa. According to their structure, there are volumetric (piston and rotary – gas compression occurs when the enclosed volume decreases), bladed (centrifugal and axial form strong rotating blades that act on the gas), flow-through types, the principle of operation of which is similar to a flow-through pump, there is K Compressible gas (air, oxygen)