Roots blower
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The Roots blower is a positive displacement lobe pump which operates by pumping a fluid with a pair of meshing lobes resembling a set of stretched gears. Fluid is trapped in pockets surrounding the lo
An Eaton M62 roots-type supercharger is visible at the front of this Ecotec LSJ engine in a 2006 Saturn Ion Red Line.
Rotary-screw compressor
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A rotary-screw compressor is a type of gas compressor, such as an air compressor, that uses a rotary-type positive-displacement mechanism. These compressors are common in industrial applications and r
Roots blower
…ratio of two. Higher pressure ratios are achievable but at decreasing efficiency. Because a Roots-type blower pumps air in discrete pulses (unlike a screw compressor), pulsation noise and turbulence may be transmitted downstream. If not properly managed (through outlet piping geometry) or accounted for (by structural…
Rotary-screw air compressor internal view
Technical Illustration of Rotary-Screw Compression system
Rotary-screw air compressor in a housing for sound attenuation
Lysholm screws. Note the complex shape of each screw. The screws run at high speed and with closely engineered tolerances.