Methods and apparatus describing a convenience beverage vending machine and its operation are described. An embedded computer interface allows consumers to create their own drinks or choose from a menu of drinks. Drinks are dispensed in a container. The beverages may be made from hot water, cold water or carbonated water that is mixed with various flavors of syrup, sweeteners and nutritional supplements. Identification may be presented and the computer recognizes the consumer and pulls up that consumer's account to determine funds available and previous drink selections and mixtures. The machine may incorporate an automatic cleaning cycle for both the valves and the dispense area.

A carbonation tower for containers of household appliances, more specifically for appliances for the automatic preparation of instant drinks, which has been developed to provide more optimized operation and use and efficient than those achieved with the known similar. Said carbonation tower including a substantially elongated body included of at least one pipe provided with at least two holes and said pipe secured to a base including at least a nozzle, said cooperating base further including a lid of a lower compartment; said lid further including at least one toroidal contoured rib cooperating with at least one lower nozzle of the container, and wherein the water and the carbon dioxide are sucked by the upper edge of the pipe and/or the holes and expelled in a path orthogonal to the suction axis through the at least one nozzle.