| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a passage formation part and a casing of a centrifugal type rotary machine capable of reducing the separation of a fluid in a return flow passage sufficiently to improve the efficiency, and a centrifugal type rotary machine.SOLUTION: A passage formation part for a centrifugal type rotary machine forming a return passage 104, in which a fluid flows toward the radially inner side, comprises: a plurality of return vanes 2 arranged at an interval in the circumferential direction; and a splitter 5 arranged between the return vanes 2 and extending at a spacing from the return vanes 2 along the return passage 104. The passage formation part is characterized in that a downstream side end part 8 of the splitter 5 in the direction, in which the fluid flows, extends farther to the downstream side than downstream side end parts 6 of the return vanes 2.</p> |
