BREWING MODULE OF AUTOMATIC COFFEE MAKERS Russian patent published in 2011 - IPC A47J31/40 

FIELD: personal use articles.

SUBSTANCE: invention relates to a brewing module of an automatic coffee maker. The brewing module comprises a brewing chamber to hold a dose of coffee powder, an inlet hole to supply water into a chamber to make a coffee drink, the first piston that comprises a movable wall of the brewing chamber to adjust its inner volume, besides, there is an output hole in this wall to let the coffee drink out of the chamber, and a valve to open or to close the output hole. Preferably there is a second piston, which moves the first piston and bears the valve. The second piston is arranged with the possibility to move relative to the first piston to actuate the valve.

EFFECT: invention provides a brewing module, which makes it possible to close the valve installed downstream the brewing chamber and to simultaneously prevent jamming of the valve body.

20 cl, 6 dwg