Refrigeration – With indicator or tester
Patent
1990-09-04
1991-07-23
Tapolcai, William E.
Refrigeration
With indicator or tester
62474, F25B 4300
Patent
active
050332716
ABSTRACT:
A refrigerant recovery system which includes a compressor having an input coupled through an evaporator and through a solenoid valve to the refrigeration system from which refrigerant is to be withdrawn, and an output coupled through a condenser to a refrigerant storage container. The evaporator and condenser are contained within a closed cylindrical canister for heat exchange and oil separation, the canister having an oil drain valve in the bottom. The refrigerant storage container is carried by a scale having a limit switch coupled to control electronics to prevent or terminate further refrigerant recovery when the container is full. The entire system, including the control electronics, is mounted on a two-wheel hand truck to facilitate transport to a job site such as a building air conditioning or heat pump system. Apparatus for purifying recovered refrigerant includes a replaceable core filter/dryer, and a liquid pump for circulating refrigerant from the liquid port of the storage container through the core and then to the container vapor port. A differential pressure gauge is connected across the filter/dryer to indicate need for core replacement. A moisture indicator displays water concentration in the refrigerant. The purification apparatus may be either separate from or combined with the recovery system.
REFERENCES:
patent: 2341430 (1944-02-01), Elsey
patent: 2506806 (1950-05-01), Metzger
patent: 2600435 (1952-06-01), Shapiro
patent: 3145544 (1964-08-01), Weller
patent: 4465593 (1984-08-01), Wemhoff
patent: 4967570 (1990-11-01), Van Steenburgh, Jr.
Manz Kenneth W.
Shirley Roger D.
Kent-Moore Corporation
Tapolcai William E.
LandOfFree
Refrigerant recovery and purification system does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Refrigerant recovery and purification system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Refrigerant recovery and purification system will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-425000