COFFEE MACHINE AND METHOD FOR PREPARING A COFFEE DRINK

原文（中国語）

A coffee machine including a machine unit with a brewing piston which is movably mounted between an initial position and a brewing position, with a piston drive which can be controlled via the control device, for moving the brewing piston from the initial position into the brewing position, with a water preparation device with a water tank, a water pump and a heating unit, for generating and delivering hot brewing water under pressure into a brewing chamber as well as with a control device for the control of the coffee machine. The coffee machine includes a locking device with at least one locking body for locking the brewing piston in the brewing position.