Refrigeration – Processes – Circulating external gas
Patent
1992-07-09
1993-11-09
Capossela, Ronald C.
Refrigeration
Processes
Circulating external gas
62384, F25J 100
Patent
active
052591999
ABSTRACT:
An open top tank is provided for containing a chilling liquid therein to a predetermined level together with a CO.sub.2 injection structure downwardly removably receivable within the tank in a manner substantially fully closing the upper end of the tank and the CO.sub.2 injection structure defines an upwardly opening central duct within the tank opening at its bottom to the interior of the tank. The upper end of the duct opens into a downwardly opening housing supported from the upper end of the duct and the housing includes a downwardly opening portion thereof spaced laterally outwardly of at least one side of the duct. The CO.sub.2 injection structure includes an upwardly directed CO.sub.2 orifice disposed within the lower end portion of the duct spaced below the aforementioned predetermined level and the upward discharge of CO.sub.2 under pressure within the duct causes an upward flow of chilling liquid within the duct, a downward flow of chilled chilling liquid from the laterally outwardly projecting portion of the housing and the entrance of chilling liquid into the bottom of the duct from the lower end portion of the tank disposed below the aforementioned predetermined level.
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