Refrigeration – Automatic control – Refrigeration producer
Patent
1999-01-21
2000-09-19
Tapolcai, William E.
Refrigeration
Automatic control
Refrigeration producer
62342, A23G 904
Patent
active
061194727
ABSTRACT:
An ice cream machine for cooling liquid ice cream into frozen ice cream includes an evaporator having an automatic expansion valve, a temperature control circuit, and an accumulator/heat exchanger. An auxiliary tank or section of the evaporator can ensure that a cooling chamber is surrounded by liquid refrigerant during normal operation. The flooding of the cylindrical cooling tank, the expansion valve, the temperature control circuit, and the accumulator/heat exchanger provide more efficient and even cooling in an interior cooling chamber. The more efficient cooling allows the ice cream machine to utilize a smaller compressor, thereby reducing the cost and energy consumption of the ice cream machine. The auxiliary tank can be a coil of tubing, a cylindrical container positioned above the cylindrical cooling tank, or a portion of the cylindrical cooling tank.
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