Brewing device for a machine for preparing beverages, in particular coffee or tea

Abstract

The present disclosure is for an electronic control system for a brewing device for a machine for preparing beverages, in particular coffee or tea. The brewing device comprises a brewing chamber having an opening through which a material to be brewed may be loaded and discharged; a closing body movable away from and towards a sealed closing position of the opening angularly spaced apart from the closing position, through an intermediate ejection position, in which the closing body is raised with respect to the closing position along the longitudinal axis of the brewing chamber; a piston slidably mounted in the brewing chamber in a position axially opposite the closing body; a first electric actuating device for the movement of the closing body; and a second electric actuating device for the movement of the piston. The electronic control system is configured to be arrangeable in the brewing device and comprises a sensory system configured to output electrical signals to allow the reaching, by the closing body, of the opening, closing and ejection positions to be sensed, and the axial position of the piston in the brewing chamber to be determined, and an on-board electronic control unit configured to be connectable to the sensory system to receive electrical signals therefrom, to the first and second electric actuating device to supply electrical control signals thereto, and to an electronic control unit of the beverage preparation machine external to the brewing device to receive therefrom commands relating to the operation of the brewing device. The on-board electronic control unit is further configured to execute commands received from the external control unit to responsively output, also based on the electrical signals received from the sensory system, electrical control signals for the electric actuating devices.