| 摘要 |
<P>PROBLEM TO BE SOLVED: To improve workability for attaching a weight for rotation balance adjustment and to easily carry out fine adjustment of rotation balance, in the balancing of an impeller for a centrifugal type fluid machine. <P>SOLUTION: An annular groove 7 is formed on the outer peripheral part of the impeller 1, and the weight 8 for rotation balance adjustment which is fixed to the groove 7 is provided. The edge part of the weight 8 is engaged with and fixed to the inner wall surface of the groove 7 by the extension of size of the weight 8 in an impeller diameter direction. The weight 8 has a structure such that the size in the impeller diameter direction is extended by the deformation from a shape having a bent part 9 to a nearly flat shape. Moreover, the almost elliptical weight 8 can be structured to be extended in the length in the impeller diameter direction by being rotated after fitted in the groove 7. <P>COPYRIGHT: (C)2013,JPO&INPIT |
