| 主权项 |
1. An infusion unit for making drinks comprising:
a moving element with a seat for ingredients for making said drinks, said seat forming an infusion chamber and being movable from an ingredient-charging position to an infusion position, wherein in said infusion position said seat is positioned between a hot water dispensing device and a beverage outlet nozzle opposite one another, wherein said dispensing device comprises:
a cylinder-piston actuator fed by a first conduit of cold water under a first pressure, wherein said cold water under said first pressure controls a closing movement of said dispensing device towards said seat in said infusion position;said cylinder-piston actuator including:
an outer cylinder;a piston sliding in said outer cylinder, said piston being in fluid communication with hot water under a second pressure through a second conduit, said first pressure being greater than said second pressure; anda hot water feeding chamber with a hot water dispensing opening on a closing surface of said infusion chamber arranged at a first side of said piston;said piston comprising:
a body defining a pressure surface, said pressure surface being arranged on a second side of said piston opposite said first side;elastic members, in contact with said first side, positioned about said outer cylinder, said elastic members providing a force opposing said first pressure applied to said piston; anda valve mounted on said piston at said hot water dispensing opening, wherein said valve on said piston is configured to open when said second pressure in said hot water feed chamber achieves a desired pressure level based on the drink being prepared. |
