| 摘要 |
<P>PROBLEM TO BE SOLVED: To suppress deterioration in the performance of a centrifugal rotary machine when the flow rate of working fluid deviates from operation specifications. <P>SOLUTION: A centrifugal rotary machine M1 includes an impeller 21 which rotates on an axis P, and a scroll 20 which covers an exit 12x2 side for a working fluid W, of the impeller 21 over the entire circumferential area and has, inside the scroll 20, a swirl flow passage 21 in which the working fluid W swirls in the circumferential direction and a communicating flow passage 22 connected to the swirl flow passage 21 and making the impeller 12 and an external flow passage communicate with each other with the swirl flow passage 21 interposed between them. The centrifugal rotary machine includes an adjusting mechanism 30 which varies the size of cross section of a throat 21s being a boundary between the swirl flow passage 21 and communicating flow passage 22 in a direction orthogonal to the flowing direction of the working fluid W. <P>COPYRIGHT: (C)2012,JPO&INPIT |
