Flooded evaporator with enhanced oil return means

Details Flooded evaporator with enhanced oil return means Flooded evaporator with enhanced oil return means

1988-08-15

1989-05-16

Capossela, Ronald C.

Refrigeration

Refrigeration producer

With lubricant handling means

62 84, 184109, 252 68, F25B 4302

Patent

active

048297860

ABSTRACT:
A lubricant composition with decreased solubility in a liquid refrigerant and increased foaming characteristics useful in refrigeration systems to promote oil return to a compressor. A lubricant composition comprises a base lubricant, synthetic paraffinic oil, and a foaming agent. These ingredients are blended in predetermined amounts, so that when the lubricant is used in the refrigeration system, an oil rich layer will form atop the liquid refrigerant in the system's flooded evaporator, and a thick, stable foam will form when vaporized refrigerant boils up through the oil rich layer. The oil foam is then drawn through a connection at the top of the flooded evaporator and returned to the compressor.

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patent: 4622048 (1986-11-01), Roberts et al.
patent: 4662190 (1987-05-01), Tischer
patent: 4702089 (1987-10-01), Olson

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