Refrigerant recovery unit

Details Refrigerant recovery unit Refrigerant recovery unit

1992-09-04

1993-12-14

Sollecito, John M.

Refrigeration

Processes

Assembling, charging, or repairing of refrigeration producer

62292, 62149, F25B 4500

Patent

active

052691489

ABSTRACT:
A refrigerant recovery unit for large refrigerant systems has a suction compressor which withdraws vapor and a liquid pump which withdraws liquid refrigerant. The compressor and liquid pump pass the fluids to a heat exchanger and a condenser, both located within a bath of chilled liquid. The vapor condenses into a liquid and combines with the liquid refrigerant. The liquid passes to a storage tank. A feedback compressor withdraws vapor from the upper portion of the tank if the pressure is above a selected level and passes it to the condenser for further condensation. A bypass line directs refrigerant vapor to the inlet of the feedback compressor if the tank vapor pressure is below the selected level. A drawdown line allows the feedback compressor to draw all of the refrigerant from the recovery unit after the recovery unit has recovered the refrigerant from the refrigeration system.

REFERENCES:
patent: 5172562 (1992-12-01), Manz et al.
patent: 5189881 (1993-03-01), Miles

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