| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To improve stability of rotation in measuring the unbalancing of a compressor impeller. <P>SOLUTION: A compressor impeller 10 comprises a base 5 coupled to a rotary shaft 3 of a rotational machine, and a plurality of compressor vanes 7 coupled to the base with a gap around an axis C of the base. The base 5 includes a front end face 9 positioned on one terminal side in an axial direction and a rear end face 11 positioned on the side opposite the front end face. In the base 5, a shaft insertion hole 13 is formed which extends axially from the rear end face 11. The shaft insertion hole 13 is a hole into which the rotary shaft 3 is inserted. In the base 5, a center hole 15 extending axially from the front end face 9 is formed at a position of the center axis C, so that the center G of gravity of the compressor impeller 10 is displaced to the side of the rear end face. <P>COPYRIGHT: (C)2013,JPO&INPIT</p> |
