Appeal No. 2006-1799
Application No. 10/269,955
The claimed invention relates to a dynamoelectric machine including a rotor, a
stator surrounding the rotor, and a generator housing which surrounds both the rotor
and the stator. Further included is at least one blower for generating a cooling gas flow
within the generator housing to cool the stator and the rotor. The dynamoelectric
machine also includes, within the generator housing, a first arcuate heat exchanger
which surrounds the stator and a second arcuate heat exchanger adjacent a first end of
the stator.
Claim 21 is illustrative of the invention and reads as follows:
21. A dynamoelectric machine comprising:
a rotor defining an axis;
a stator surrounding said rotor;
a generator housing surrounding said rotor and said stator;
a first blower for generating a first cooling gas flow within said generator housing
for cooling said stator and said rotor;
a first arcuate heat exchanger within said generator housing and surrounding
said stator for extracting heat from the first cooling gas flow, said first arcuate heat
exchanger comprising a first bundle of cooling tubes extending in a first plane
transverse to the axis; and
a second arcuate heat exchanger within said generator housing and adjacent a
first end of said stator for also extracting heat from the first cooling gas flow, said
second arcuate heat exchanger comprising a second bundle of cooling tubes extending
in a second plane transverse to the axis.
The Examiner relies on the following prior art:
Jacobsen 2,460,752 Feb. 01, 1949
Kleinhans 4,845,394 Jul. 04, 1989
Sheerin 5,844,333 Dec. 01, 1998
Martins 6,343,646 Feb. 05, 2002
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