Multiple compressor oil system

Details Multiple compressor oil system Multiple compressor oil system

F - Mech Eng,Light,Heat,Weapons

25

B

62/29

F25B 43/02 (2006.01)

Patent

CA 1212555

ABSTRACT OF THE INVENTION An oil control valve in an oil separation and delivery system for a multiple compressor refrigeration system, the oil system having oil and refrigerant separating means connected to receive the common discharge from the compressors and oil delivery means for maintaining compressor oil levels at the suction side of the respective compressors, said oil control valve being disposed between the separating means and oil delivery means and including a valve body having an oil inlet connected to receive liquid oil from the separating means on the high pressure side of the refrigeration system and an oil outlet for low pressure connection with the oil delivery means, internal valve means controlling oil flow between the inlet and outlet and movable pressure means responsive to oil outlet pressure and compressor suction pressure acting in opposition for regulating the internal valve means, and a multiple compressor system in which at least two compressors operate at substantially different suction pressures and separate oil control valves for maintaining the downstream oil pressure to the oil delivery means at a preselected value for each of such compressors.

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