Patent ID: 10125761

Abstract:
System for supplying a pressurized liquid for machines for preparing beverages comprising a first cylinder (2a) and plunger (2b) assembly (2), said plunger (2b) defining inside its cylinder (2a) a chamber (5) for housing said liquid, said plunger (2b) being able to accumulate, in an active position, potential energy from the compression force applied to a fluid, said potential energy being susceptible of being transmitted as a pressure to the liquid inside said chamber (5), and it is characterized in that it comprises a second cylinder (3a) and plunger (3b) assembly (3), said second plunger (3b) defining inside its cylinder (3a) a chamber (4) for housing said fluid, said first (2) and second (3) assemblies of plunger (2b, 3b) and cylinder (2a, 3a) being associated so that the plunger (2b) of the first assembly (2) is susceptible of accumulating, in its active position, potential energy from the compression force applied to the fluid housed inside the second assembly (3). Method for supplying pressurized liquid comprising the following steps: a) moving by continuous or discrete steps the plunger (2b) of said first assembly (2) to an active position in which said plunger (2b) accumulates potential energy from the compression force applied to the fluid housed inside the chamber (4) of the second assembly (3), b) charging liquid from a tank (14) in the chamber of the cylinder (2a) of said first assembly (2), said charging being done preferably during step a), when the plunger (2b) of the first assembly (2) is moved, the inline valve (15a) of the liquid distribution duct (11) remaining closed during said charge, and c) driving the push-button (16) associated with the liquid distribution duct (11) for opening the inline valve (15a) of said duct (11) and permitting the exit of pressurized liquid.