Patent ID: 8022591

Claim:
Flux screen ( 1 ) for shielding a generator stator core ( 10 ) from a magnetic field generated by end windings ( 23 ) of a stator ( 8 ), wherein the flux screen comprises a frontside ( 40 ) to be at least indirectly facing the end windings ( 23 ) of the generator and a backside ( 41 ) to be at least indirectly facing the stator core ( 10 ) of the generator, and wherein the backside ( 41 ) is provided with channels or grooves ( 37 ), wherein the screen is of an essentially annular shape with an essentially radial outer portion ( 2 ), with a middle portion ( 3 ) radially inwardly adjacent to said outer portion ( 2 ), the middle portion ( 3 ) is inclined with respect to the plane of the outer portion ( 2 ) and forms a conical section of the flux screen ( 1 ), and preferably with an axial portion ( 4 ) radially inwardly adjacent to said middle portion ( 3 ).