Patent ID: 7861733
Filing Date: 2011-01-04
Classification: D06F

Abstract:
1. Device for treating pieces of a substrate at high pressure, piece by piece or in batches, with a treatment medium in the supercritical or near-critical state, comprising: a first pressure chamber, which is provided with a closable feed opening for placing the pieces of substrate in the pressure chamber; a pipe system for supplying and discharging the treatment medium to and from the pressure chamber under high pressure, wherein the treatment medium is selected from the group consisting of CO an electric motor, which is fixed in the first pressure chamber or in a second pressure chamber coupled to the first pressure chamber under high pressure, for driving an actuator to carry out a mechanical action in the treatment medium, the electric motor being open to the treatment medium and being disposed and designed to be accessible to the treatment medium, in such a manner that during the treatment of a substrate the supercritical or near-critical treatment medium flows through and around the electric motor, wherein the electric motor comprises an open motor casing which is provided with inlet openings for allowing the treatment medium to flow into the electric motor as far as around the motor windings.