Beverage mixing device, beverage preparation device and method for preparing a beverage product

Beverage preparation device comprising

• a beverage mixing device comprising a mixing body defining a mixing chamber,
• at least one or a plurality of fluid inlets for supplying a fluid into the mixing chamber, a discharge opening to discharge a liquid from the mixing chamber,
• a sealing element being moveably provided between a closed position for closing the discharge opening and an open position for releasing the discharge opening to allow the liquid in the mixing chamber be discharged via the discharge opening,
• an evacuation outlet for evacuating the mixing chamber by additional fluid be introduced into the mixing chamber via the at least one or the plurality of fluid inlets when the discharge opening is closed by the sealing element,
• a liquid supply fluidly connected to the at least one or the plurality of fluid inlets for selectively delivering a source liquid into the mixing chamber,
• at least one or a plurality of product supplies each fluidly connected to the at least one or the plurality of fluid inlets for selectively delivering a beverage ingredient into the mixing chamber,
• a gas supply fluidly connected to the at least one or the plurality of fluid inlets for selectively delivering a gas into the mixing chamber, and
• a drainage fluidly connected to the evacuation outlet for draining the mixing chamber.

Method for preparing a beverage product, comprising the steps of:

• providing a beverage preparation device comprising:
• a mixing body defining a mixing chamber,
• at least one or a plurality of fluid inlets for supplying a fluid into the mixing chamber, a discharge opening to discharge a liquid from the mixing chamber,
• a sealing element being moveably provided between a closed position for closing the discharge opening and an open position for releasing the discharge opening to allow the liquid in the mixing chamber be discharged via the discharge opening,
• an evacuation outlet for evacuating the mixing chamber by a fluid be introduced into the mixing chamber via the at least one or the plurality of fluid inlets when the discharge opening is closed by the sealing element,
• moving the sealing element into the closed position,
• sanitizing the mixing chamber by circulating a sanitizing fluid via the inlet or the plurality of inlets through the mixing chamber and via the evacuation outlet to the drainage,
• evacuating the mixing chamber by a gas being introduced via the at least one or plurality of fluid inlets through the mixing chamber and via the evacuation outlet to the drainage,
• moving the sealing element into the open position for opening the discharge opening,
• delivering a source liquid and/or beverage ingredients via the at least one or plurality of fluid inlets into the mixing chamber to prepare the beverage product, and
• dispensing the beverage product out of the discharge opening.