Abstract: The present invention includes a dual purpose carbonator/blending bottle connected to a source of beverage syrup, a source of potable water and to a source of pressurized carbon dioxide gas. The dual purpose bottle is retained within an ice bank water bath tank. A pair of ratio valves provide for metering the water and syrup at a desired ratio. The mixed beverage first flows through a serpentine coil, also located in water bath, and then flow into the dual purpose bottle. A refrigeration system provides for cooling an evaporator located in the water tank for forming the ice bank thereon. The carbonated beverage then flows from the bottle into a freeze cylinder. The freeze cylinder also includes a further evaporator coiled around an exterior perimeter thereof. The freeze cylinder evaporator is connected to and cooled by the same refrigeration system that cools the evaporator in the water bath tank.

Abstract: In one preferred embodiment, a freeze cylinder is used having a closed end and an open end. Around the cylinder adjacent the closed end, a three phase DC stator is placed. The stator is connected to a three phase DC power supply that includes an AC to DC inverter. An electrical rotor is positioned in the cylinder adjacent a spacer plate. The rotor consists of metal ring around the perimeter of which are secured eight permanent magnets. The magnets and tube are encased in a food grade plastic creating a rotor disk having a central hole. A scraper extends along the axis of the cylinder and includes a central rod end that extends through the rotor and into the bearing of the spacer disk. The scraper includes a skirt portion around the rod end for securing to the rotor. In operation, the stator and rotor constitute a three phase DC motor that is operated by the power supply to rotate the scraper within the cylinder.