Patent ID: 6598516
Filing Date: 2003-07-29
Classification: A23G,Y10S

Abstract:
A system for effecting continuous production of a frozen ice cream substance while maintaining overrun of the frozen ice cream comprising:a continuous freezer having a freezing cylinder with a driven screw worm scraping conveyor means for forcing the ice cream substance through and out of the freezing cylinder and for scraping off solid ice formations from an inner surface of the freezing cylinder, the freezing cylinder having an in-feed pipe of a first cross-sectional area and a discharge pipe connected to an extrusion outlet for discharging of the frozen ice cream substance; wherein a constriction is formed in the discharge pipe downstream of the extrusion outlet, said constriction having a smaller cross-sectional area than the first cross-sectional area of the in-feed pipe; wherein, in order to maintain the overrun of the frozen ice cream, said screw worm scraping conveyor means comprises a single rotor with a conveyor worm screw having an outer scraping edge and a screw pitch that is 1-2 times an outer diameter of the worm screw, and a motor means connected to said rotor and having an operating speed which rotates the rotor at a speed in a range of 5 to 20 rpm.