PROCEDIMENTO E IMPIANTO PER MODIFICARE SUBITANEAMENTE LA TEMPERATURA DI UN FLUIDO CHE RIEMPIE UNA BOTTIGLIA CHIUSA IN VETRO, ED EVENTUALMENTE PER MANTENERNE LA TEMPERATURA AL DI FUORI DI QUELLA NORMALE

摘要

To alter rapidly the temperature of fluid 3 in a closed vessel 1, a nozzle 6 is disposed above the vessel 1, and an annular cross-section jet 17 of liquid at an appropriate temperature is directed at the vessel 1 so as to form a coherent film 18 covering its entire surface. Preferably the liquid, which may conveniently be water, is supplied at a high rate under a low pressure so as to preserve lamellar flow. Advantageously the annular cross-section jet 17 is conical, being directed downwardly and inwardly. The fluid 3 in the vessel 1 can be maintained at a desired temperature by continued application of the jet 17 of liquid. The invention is suitable for use with glass bottles and has application in food pasteurization.