Gas separation – Means within gas stream for conducting concentrate to collector
Patent
1990-01-12
1992-01-07
Nozick, Bernard
Gas separation
Means within gas stream for conducting concentrate to collector
62 77, 62292, 62195, 55 23, 55268, 55274, B01D 5000
Patent
active
050787560
ABSTRACT:
A refrigerant purification and recovery apparatus for removing refrigerant from a refrigeration unit and for purifying the refrigerant removed from the refrigeration unit includes a compressor, condenser, a receiver-separator vessel having upper and lower end portions, pressure detection means for generating signals indicative of a pressure in the upper end portion of the receiver-separator vessel, liquid detection means for generating a signal indicative of the presence or absence of liquid in the vessel at a position between the upper and lower end portions, means for venting gas from the upper end portion of the receiver-separator vessel, means for draining liquid from the lower end portion of the receiver-separator vessel, and control-signal means for receiving the pressure indicative and liquid-presence indicative signals and generating a drain signal only when the pressure indicative signal is indicative of a pressure greater than a predetermined pressure and the liquid presence indicative signal is indicative of a liquid present, and generating a vent signal only when the pressure indicative signal is indicative of a pressure greater than a predetermined pressure and the liquid presence indicative signal is indicative of no liquid present.
REFERENCES:
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WO89/06336, 7/13/89, Merritt et al. & copy in class 62-149.
Major Thomas O.
Major, Jr. Jack E.
Nozick Bernard
Oxenham J. Preston
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