Multi-riser refrigeration system with oil return means

Details Multi-riser refrigeration system with oil return means Multi-riser refrigeration system with oil return means

1998-12-18

2000-10-03

Wayner, William

Refrigeration

Refrigeration producer

With lubricant handling means

62 84, 62524, F25B 4302, F25B 3902

Patent

active

06125648&

ABSTRACT:
A refrigeration system having compressors positioned higher than the dispersed evaporators requires multiple suction risers. To better ensure oil return to the compressors, only a single oil return riser is employed. This oil return riser is connected to one end of an oil collection main positioned near the lower portion of the suction risers. The oil collection main is connected by restricted oil drain conduits to the lower portions of the suction risers, thereby collecting the oil which failed to be conveyed to the top of the suction risers by their vapor velocity. The restrictions in the oil drain conduits ensure adequate vapor velocity within the oil collection main even with widely varying loads on the suction risers.

REFERENCES:
patent: 3257824 (1966-06-01), Shikasho
patent: 4625523 (1986-12-01), Toub et al.
patent: 4715196 (1987-12-01), Sugiura

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