초록 ▼

A coffee machine is provided with a boiler for heating brewing water, a brewing cylinder defining a brewing chamber, a closure piston for closing the one open end of the brewing cylinder as well as a brewing piston for compressing the coffee powder in the brewing cylinder and/or for ejecting the elu

A coffee machine is provided with a boiler for heating brewing water, a brewing cylinder defining a brewing chamber, a closure piston for closing the one open end of the brewing cylinder as well as a brewing piston for compressing the coffee powder in the brewing cylinder and/or for ejecting the elutriated coffee powder cake, whereby the brewing piston is longitudinally movable in the brewing cylinder. The closure piston is integrally formed or rigidly connected to the housing of the boiler and firmly mounted to the housing of the coffee machine. Moreover, there is provided a brewing module that is removably inserted into the housing of the coffee machine and that includes at least the brewing cylinder and the brewing piston. The brewing cylinder and the brewing piston are movable in longitudinal direction, but cannot be rotated. Such a coffee machine can be designed very compactly. Moreover, the brewing module consists of only a few elements and, thus, can be manufactured at low costs and is very reliable in operation.

대표청구항 ▼

[ What is claimed is:] [1.] A coffee machine, comprising:a means for heating water having a housing;an essentially hollow brewing cylinder means having a central longitudinal axis and an open end;means for moving said brewing cylinder means along said central longitudinal axis;a closure piston means

[ What is claimed is:] [1.] A coffee machine, comprising:a means for heating water having a housing;an essentially hollow brewing cylinder means having a central longitudinal axis and an open end;means for moving said brewing cylinder means along said central longitudinal axis;a closure piston means adapted to close said open end of said brewing cylinder means to thereby form a brewing chamber; anda brewing piston means located in the interior of said brewing cylinder means, said brewing piston means being movable along said central longitudinal axis to compress coffee powder received in said brewing cylinder means as well as for removing the used coffee powder cake;said closure piston means being an integral part of said means for heating water,said closure piston means being located inside said brewing cylinder during brewing of said coffee,said closure piston means is designed as a projection of the housing of said means for heating water.