Refrigeration – Processes – Separating or preventing formation of undesirables
Patent
1992-10-07
1993-11-16
Sollecito, John M.
Refrigeration
Processes
Separating or preventing formation of undesirables
62475, F25B 4700
Patent
active
052612465
ABSTRACT:
A purge apparatus for removing foreign non-condensable gases from a refrigeration system including a closed purge chamber adapted to receive the foreign gases together with a portion of the refrigerant from the high pressure region of the system. The purge chamber is cooled to condense the refrigerant, and a float actuated electrical switch is provided within the purge chamber to open a first valve for discharging the condensed refrigerant back to the evaporator of the refrigeration system upon the refrigerant reaching a predetermined level, and open a second valve for venting the non-condensable gases to the atmosphere through a gas discharge line upon a drop in the refrigerant level. A heated gas separating tank is positioned in the gas discharge line, which serves to separate any gaseous refrigerant entrained with the contaminating non-condensable gases and cause the gaseous refrigerant to be returned to the cool purge chamber where they may be condensed.
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patent: 3664147 (1972-05-01), Blackmon
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patent: 4984431 (1991-01-01), Mount et al.
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Blackmon John G.
Blackmon William S.
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