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 a liquid in the mixing chamber be discharged via the discharge opening, and
• 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,
• a liquid supply fluidly connected to the at least one or the plurality of fluid inlets for selectively delivering a 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,
• 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 a liquid in the mixing chamber be discharged via the discharge opening, and
• 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 inlet or plurality of 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 and preferably also for closing the evacuation outlet,
• delivering a liquid and/or beverage ingredients via the inlet or the plurality of inlets into the mixing chamber to prepare a beverage product, and
• dispensing the beverage product out of the discharge outlet.