Gas-cooled electrical machine with pressure charging

Details Gas-cooled electrical machine with pressure charging Gas-cooled electrical machine with pressure charging

2007-09-18

2007-09-18

Mullins, Burton (Department: 2834)

Electrical generator or motor structure

Dynamoelectric

Rotary

C310S058000, C310S06000A, C415S116000

Reexamination Certificate

active

11141156

ABSTRACT:
A gas-cooled electric machine includes a generator housing, a rotor shaft, at least one axial fan disposed on the rotor shaft inside the generator housing and having a hub, and a pressure boosting apparatus associated with the axial fan and configured to raise an absolute pressure in a generator interior. The pressure boosting apparatus has at least one flow channel between an interior of the hub and the generator interior and is at least partially delimited by the hub. A flow inlet into the flow channel and a flow outlet out of the flow channel are disposed radially at a distance with respect to each other.

REFERENCES:
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patent: 3225231 (1965-12-01), Kudlacik
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patent: 3816751 (1974-06-01), Jampen et al.
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patent: 6340853 (2002-01-01), Kaiho et al.
patent: 6558116 (2003-05-01), Baer et al.
patent: 541 890 (1973-09-01), None
patent: 1 209 802 (2002-05-01), None

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