Coffee Machine

Abstract

A coffee machine with a brewer. The brewer includes a brewing chamber for receiving ground coffee and a piston movable in the brewing chamber for tamping the ground coffee. An input interface enables an operator to select a desired amount of ground coffee to be supplied to the brewing chamber and to select an amount of brewing water to be used during extraction of the coffee. The input interface receives a setpoint for a desired extraction time. The coffee machine also may include a flowmeter for measuring an actual flow of the brewing water during extraction, the flowmeter connected to a controller and the controller arranged to drive the piston to a position which causes the actual flow of the brewing water to be set at a value which corresponds to eventually using the full amount of brewing water in about or exactly the desired extraction time.

Dependencies are inferred from the claim text.