US Patent 10893773 Unit, device and system for preparing beverage consumptions

The beverage preparation unit comprises a mixing chamber having a beverage outlet, a liquid flow path for supplying a liquid to the mixing chamber, and an air flow path for supplying air to the liquid flow path. The mixing chamber is arranged for receiving a beverage related ingredient, such as concentrate, preferably from an exchangeable supply pack. The liquid flow path is arranged for generating a hollow jet of liquid having an outer liquid portion extending in a flow direction of the jet and an inner air portion extending in a flow direction of the jet wherein the outer liquid portion surrounds the inner air portion.