Multiple compressor oil system

Details Multiple compressor oil system Multiple compressor oil system

1984-10-18

1986-05-20

Tanner, Harry

Refrigeration

Automatic control

Refrigeration producer

62510, F25B 3100

Patent

active

045892636

ABSTRACT:
An oil return system for a multiple compressor refrigeration system in which said compressors have a common discharge and at least two of said compressors have their low pressure suction side connected to operate at substantially different suction pressures, said oil return system having oil and refrigerant separating means connected to receive the common discharge from said compressors and oil delivery means constructed and arranged to maintain compressor oil levels at the suction side of the respective compressors, and oil control valve means disposed between said separating means and oil delivery means for each of said two compressors, said oil control valve means for each such compressor having pressure means for maintaining the downstream oil pressure to the oil delivery means at a preselected value.

REFERENCES:
patent: 2606430 (1952-08-01), Pownall
patent: 2665557 (1954-01-01), Dobson
patent: 3633377 (1972-01-01), Quick
patent: 3766745 (1973-10-01), Quick
patent: 4503685 (1985-03-01), DiCarlo et al.

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