Dynamoelectric machine with arcuate heat exchanger and related methods
AssigneeSiemens Power Generation, Inc.
InventorsKing Wai Chan, Homer Gay Hargrove
Life of this patent
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Abstract
A dynamoelectric machine 30 includes a rotor 32 and a stator 34 surrounding the rotor. The dynamoelectric machine 30 further includes a generator housing 36 surrounding both the rotor 32 and the stator 34. Additionally, the dynamoelectric machine 30 includes at least one blower 39a, 39b for generating a cooling gas flow 38 within the generator housing 36 to cool the stator 34 and the rotor 32. The dynamoelectric machine 30 includes at least one arcuate heat exchanger 40a, 40b, 80a, 80b within the generator housing 36 for extracting heat from the cooling gas flow 38.
Claims14
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.
A method of extracting heat from a first cooling gas flow within a generator housing to cool a rotor and a stator surrounding the rotor, the method comprising:
- positioning a first arcuate heat exchanger within the generator housing and surrounding the stator for extracting heat from the first cooling gas flow, the first arcuate heat exchanger comprising a first bundle of cooling tubes extending in a first plane transverse to an axis defined by said rotor;
- positioning a second arcuate heat exchanger within the generator housing and adjacent a first end of the 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;
- and
- causing a coolant to flow within the first and second arcuate heat exchangers to extract heat from the first cooling gas flow.
Dependencies are inferred from the claim text.