| 摘要 |
<p>PURPOSE:To secure the proper flow of cooling air for cooling windings or iron cores without resorting to the three dimen-sional analysis requiring much cost and time. CONSTITUTION:A louver 81 is provided on the surface of an air duct 8. The cooling air fed to the air duct 8 by a cooling fan 7 fitted to the side of the air duct 8 is blown almost upward to pass through the inside of windings 2 and the gaps between inner side winding 22 and iron cores 1 for cooling them down. At this time, a partition board 82 provided for partly blocking the louver 81 is fitted to be shifted in the right and leftward direction in the figure so that the louver size may be changed simultaneously thereby enabling the louver position to be equivalently shifted.</p> |
