Refrigeration – Automatic control – Withdrawing or adding refrigerant from or to normally closed...
Patent
1991-12-31
1993-06-29
Sollecito, John M.
Refrigeration
Automatic control
Withdrawing or adding refrigerant from or to normally closed...
62292, F25B 4500
Patent
active
052223698
ABSTRACT:
A device is disclosed for recovering refrigerant from a refrigeration system. The refrigerant recovery device includes a refrigerant processing flow path. The refrigerant processing flow path includes components for withdrawing the refrigerant from the refrigeration system and for processing the refrigerant so removed to remove impurities from the refrigerant. A receiver tank is provided for receiving and storing the processed refrigerant. The receiver tank includes an inlet and an outlet. Components are also provided for transferring the refrigerant from the receiver tank to a transfer tank at an initially evacuated condition, and for preventing the transfer of refrigerant between the receiver tank and the transfer tank when the transfer tank is not in an initially substantially evacuated condition.
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U.S. Ser. No. 07/579,779 filed Sep. 1990, Hancock & McClelland.
Hancock John P.
James Jeffrey S.
McClelland Ralph A.
K-Whit Tools, Inc.
Sollecito John M.
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