Air / Oil Separators
Rotary
screw compressors and rotary vane compressors inject compressor oil right into the compression chamber with the air being
compressed. The oil serves as a coolant and lubricant absorbing the heat of compression. The main benefit of using compressor
lubricant as a coolant is a steady air compressor operating temperature no matter what duty cycle, thus creating a continuous
duty air compressor.
Injecting the compressor oil into the compression chamber also creates a problem. The compressed
air is full of oil when it leaves the compressor air end. The compressor lubricant needs to be removed to protect the air
system and to return it to the oil sump so the compressor lubricant can be used over and over again.
The oil separator
is the component that separates the compressor lubricant from the compressed air and returns it to the main oil sump.
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