Decoction Device And Extraction Apparatus

摘要

A decoction device for an extractor, in particular for preparing espresso, comprises a decoction chamber (7) enclosed by a chamber wall (5) for receiving a specific quantity of powder therein. The decoction chamber is situated between a first chamber bottom (20) and a second chamber bottom (30). The first chamber bottom (20) is coupled to a linear actuator and is axially movable in the decoction chamber so as to compress the powder to a bed. A driving part is provided to impose a relative rotation between one of the chamber bottoms and the chamber wall as the chamber bottoms (20, 30) approach each other. To this end, the respective chamber bottom (30) is rotatable within the chamber wall (5), and the driving part is configured to impose the rotation thereon during an approach movement of the first chamber bottom (20). A slip coupling (60) is provided in a transmission.