Retrofits in machine to give a semi frozen carbonated drink including a system to automatically control the quality of beverages by timed modalities

摘要

This invention relates to a machine for dispensing a semi-frozen carbonated beverage, and particularly such a machine including a system for automatically controlling the quality of the beverage through various timed modes. The machine includes a cooling chamber, means for delivering liquid ingredient to the chamber, means for delivering carbon dioxide gas to the chamber, and refrigeration means for maintaining the liquid ingredient in the chamber to within a prescribed viscosity and temperature range. The temperature and viscosity of the liquid ingredient and the pressure within the chamber are maintained within prescribed ranges during a first operating mode of the machine to produce a semi-frozen carbonated beverage upon dispensing the ingredients from the chamber. The automatic mode control of the machine controls the refrigeration means and liquid and gas delivering means such that during a first operating mode, said viscosity, temperature, and pressure ranges are maintained and delivery of both liquid and gas ingredients is allowed to the chamber, during a second operating mode the liquid ingredient within the chamber is defrosted, and during a period of time between first operating modes the delivery of gas is allowed to the chamber and the supply of liquid ingredient to the chamber is shut off.