Refrigeration – With means for charging closed refrigeration producing system
Patent
1992-10-02
1993-06-22
Sollecito, John M.
Refrigeration
With means for charging closed refrigeration producing system
285311, 285420, F25B 4500
Patent
active
052208109
ABSTRACT:
A refrigerant recovery system is operative in a recovery mode to recover refrigerant from an air conditioning circuit, and in a cleaning mode to cleanse the recovered refrigerant of impurities therein. In the recovery mode the refrigerant is withdrawn from the air conditioning circuit and flowed through a filter dryer by a compressor which then forces the refrigerant through a condenser into a storage container. In the cleaning mode, liquid refrigerant from within the storage container is continuously flowed through the filter dryer and then back into the storage container. To remove impurities from within the air conditioning circuit, the recovery system is also operative in a closed loop flushing mode in which liquid refrigerant from within the storage container is continuously pumped through a portion of the air conditioning circuit, filtered, and then returned to the storage container without any appreciable quantity of refrigerant being vented to atmosphere during the flushing process. For use in conjunction with its flushing mode of operation, the recovery system is provided with a specially designed flushing adapter kit having removable adapter fittings configured to precisely mate with inlet and outlet fittings of the particular air conditioning circuit to be tested. In another embodiment thereof, the kit is provided with removable adapter fittings of a universal configuration permitting the recovery system to be operatively connected to various types of air conditioning circuits.
REFERENCES:
patent: 1991343 (1935-02-01), Ball
patent: 2125542 (1938-08-01), Catterlin
Sollecito John M.
Technical Chemical Company
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