Refrigerant recovery, purification and recharging system

Details Refrigerant recovery, purification and recharging system Refrigerant recovery, purification and recharging system

1988-02-19

1989-02-21

Tapolcai, William E.

Refrigeration

With means for charging closed refrigeration producing system

62474, F25B 4500

Patent

active

048054160

ABSTRACT:
A system for recovering, purifying and recharging refrigerant in a refrigeration system comprises a refrigerant compressor having an input connected through an evaporator and a recovery control valve to a refrigeration system from which refrigerant is to be recovered, purified and recharged. A condenser is connected to the output of the compressor in heat exchange relation with the evaporator for liquifying refrigerant from the compressor output. Refrigerant liquified in the condenser is fed to a first port of a refrigerant storage container. During a purification cycle, refrigerant is circulated from a second port of the refrigerant storage container in a closed path through a circulation valve and a filter for removing water and other contaminants, and then returned to the first container port. The refrigeration system from which refrigerant has been recovered is evacuated to atmosphere through a vacuum valve. Following such evacuation, the second port of the refrigerant storage container is connected through a recharging valve to the refrigeration of system for feeding refrigerant from the storage container to the refrigeration system, and thereby recharging the refrigeration system for normal use.

REFERENCES:
patent: 2044096 (1936-06-01), Moran
patent: 2341429 (1944-02-01), Elsey
patent: 2865442 (1958-12-01), Halford et al.
patent: 2917110 (1959-12-01), Brohl
patent: 3915857 (1975-10-01), Olson
patent: 4110998 (1978-09-01), Owen
patent: 4261178 (1981-04-01), Cain

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