ROTARY SCREW COMPRESSOR
LAMBERT M. SURHONE, MARIAM T. TENNOE, SUSAN F. HENSSONOW
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A rotary screw compressor is a gas compressor which uses a rotary type positive displacement mechanism.
Rotary screw compressors use two screws to compress the gas.
The screws are driven through a set of synchronization gears.
Gas enters at the suction side and moves through the threads as the screws rotate.
Clearances between the threads decrease and compress the gas.
The gas exits at the end of the screws.
The effectiveness of this mechanism is dependent on close fitting clearances between the helical rotors and the chamber for sealing of the compression cavities.
Rotary screw compressors tend to be compact and smooth running with limited vibration and thus do not require spring suspension.
Many rotary screw compressors are, however, mounted using elastomer vibration isolating mounts to absorb high-frequency vibrations, especially in rotary screw compressors that operate at high rotational speeds.
