Refrigeration – Processes – Congealing flowable material – e.g. – ice making
Patent
1978-12-01
1980-05-06
Wayner, William E.
Refrigeration
Processes
Congealing flowable material, e.g., ice making
62306, 62342, 137594, 137566, 141 46, 222146C, F25C 118
Patent
active
042015588
ABSTRACT:
A method and apparatus for preparing and dispensing a semi-frozen food product containing liquid and gaseous ingredients including a refrigerated freezing chamber and volumetric type gas and liquid pumps operable when driven to pump gas and liquid in preselected proportions and under pressure to the freezing chamber. The gas and liquid pumps are motor driven under the control of a pressure responsive control which starts the pumps when the pressure in the freezing chamber falls below a predetermined super-atmospheric pressure range and stops the pumps when it rises above that predetermined super-atmospheric pressure range. The gas and liquid are supplied to the respective pumps under a pressure that is above atmospheric pressure but below the predetermined super-atmospheric pressure range to be maintained in the freezing chamber, and hold-back valves are provided between the pumps and the freezing chamber to inhibit flow of liquid and gaseous ingredients to the freezing chamber until the pressure at the outlets of the pumps exceeds the pressure at the inlets of the pumps.
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Aylesworth Preston L.
Schwitters Stephen W.
Beatrice Foods Co.
Tapolcai, Jr. William E.
Wayner William E.
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