Patent ID: 8196423
Filing Date: 2012-06-12
Classification: A23G,F25C

Abstract:
1. A frozen product machine, comprising: a freeze barrel; a refrigeration system operable in a chilling cycle to freeze product in said freeze barrel and in a defrost cycle to defrost product in said freeze barrel; a scraper in said freeze barrel; an electric motor for rotating said scraper in said freeze barrel; means for sensing the output torque of said motor; first means for interrupting a chilling cycle of said refrigeration system in response to sensing an output torque of said motor that is at least equal to a predetermined torque; second means for turning off said motor and for operating said refrigeration system in a defrost cycle in response to sensing an output torque of said motor that is at least equal to a selected torque, said selected torque being greater than said predetermined torque; and means, responsive to completion of said defrost cycle of said refrigeration system for turning on said motor and operating said refrigeration system in a chilling cycle to refreeze product in said freeze barrel.