FREEZING CYLINDER FOR ICE-CREAM MAKING MACHINE Russian patent published in 2007 - IPC A23G9/00 

FIELD: food-processing industry.

SUBSTANCE: freezing cylinder has cylindrical heat-exchanger consisting of cooling cylinder and housing. Helical ribs are formed on outer surface of cooling cylinder for defining of spiral-shaped evaporation cavity. Cooling cylinder is tightly embraced by housing. Circular space between housing and cooling cylinder is pressurized at both ends. There are pipes at housing ends for connection to refrigerator system. Cooling cylinder is equipped at side adjacent to evaporation cavity, between helical ribs, with additional helical ribs of smaller sizes. Brass is selected as material for cooling cylinder.

EFFECT: increased heat transfer coefficient.

2 dwg