| 摘要 |
<p>A rotary electrical machine (1) comprising a plurality of disc-shaped stator stages (3, 5, 7) and a plurality of disc-shaped rotor stages (2, 4, 6, 8), each of the rotor stages (2, 4, 6, 8) being respectively alternately interleaved with the stator stages (3, 5, 7). A space (94, 96) is provided between each stator stage and its adjacent rotor stage. Each of the stator stages is provided with at least two stator windings, defining a passage (82, 84) therebetween adjacent windings. A coiled pipe (100, 102 - Figures 3A and 3B) is disposed in or formed integrally with each of the passages (82, 84) in substantially the same plane as the stator stage, such that the outlet of one pipe (100) is coupled with the inlet of the pipe (102) disposed in the adjacent passage. In use, fluid, for example air, helium, water or oil is caused to flow around the coiled pipes (100, 102) in the passages between the stator windings. At the same time, cooling gas, for example, air or helium, is caused to pass through the stator-rotor spaces so as to cool the magnets (10), etc. and the retention hoops (18), etc. of the rotor stage as well as the outer surfaces of the stator stage. Alternatively, the stator-rotor spaces may be held under a vacuum.</p> |
