Abb Research Ltd.

Alstom (switzerland) Ltd

Alstom Technology Limited

Jens Von Wolfersdorf

Bernhard Weigand

Reinhard Joho

Sacha Parneix

Stephan Hess

Hans Zimmermann, Deceased

Hans Zimmermann

Arrangement for cooling a flow-passage wall surrounding a flow passage, having at least one rib feature

In a turbo-generator (10) having a rotor (11) and a stator (12) concentrically surrounding the rotor (11) and separated from the rotor (11) by an air gap (14), and also having a cooling arrangement in which a main fan (33) draws in a gaseous cooling medium flowing through corresponding cooling passages in the rotor (11) and in the stator (12) and forces it through a cooler (22, 23, 24) back into the cooling passages, the cooling medium flowing through the rotor (11) in the axial direction, issuing in a heated state into the air gap (14) and being returned from the air gap (14) to the main fan (33), improved rotor cooling is achieved in that the cooling medium heated by the rotor (11) is directed radially outward from the air gap (14) through outflow passages (15) in the stator (12) and is returned to the main fan (33) outside the stator (12) via a cooling-air return (21).

Turbo-generator

Growing community of inventors

Untersiggenthal, Switzerland

Jens Von Wolfersdorf