Patent ID: 8109446
Filing Date: 2012-02-07
Classification: F25D

Abstract:
1. Method of control of a quick cooling cell for a cooked product for the purpose of preserving the cooked product, comprising an isothermal chamber, an internal air circulation device, a cold production unit having a heat exchanger generally placed inside the isothermal chamber and at least one probe insertable in the core of the product, characterized in that a periodic reading is made of the core temperature of the product to be cooled and of the ambient air temperature in the chamber, and in that after said temperature measurements a set value of the ambient air temperature is determined inside the chamber, regardless of the type of product, its structure, the weight of the product in the apparatus, the thickness of the product and the wrapping of the product, as well as the capacity of the apparatus, that set value of ambient air temperature inside the chamber serving to control the cold production equipment until the end of the cooling cycle, in order to attain a core temperature at the end of the cycle below a final core temperature predetermined according to a cycle time less than or equal to a predetermined maximum cycle time, the set value of the ambient air temperature inside the chamber is as close as possible to 0° C., and in that after each measurement of air temperature and core temperature, said measured values are treated so as to determine: the deviation between the core temperature measured and the air temperature measured in the chamber, the calculated (predicted) time of arrival at the predetermined core temperature from core temperatures measured as a function of time, a mean value of the calculated time of arrival at the predetermined final core temperature, the slope of variation of the calculated time of arrival at the predetermined final core temperature, and the deviation between the core temperature and the air temperature at the maximum time of arrival calculated on the basis of the deviation between the core temperature measured and the air temperature measured in the chamber as a function of time.