| 摘要 |
<p>A fluid machine according to an embodiment includes a sealing portion 31 which is formed of an annular minute gap formed between a runner band 15 of a runner 12 5 configuring a rotating portion and a sealing liner 22 which is a stationary portion and arranged in opposition to the runner band 15. A groove 40 having a quadrangular cross-sectional shape is formed circumferentially on a surface 24 of the sealing liner 22 configuring the sealing 10 portion 31. In a cross section perpendicular to a groove forming direction of the groove 40, an angle 0, which is formed between a side WU of the groove 40 on the most upstream side with respect to the flowing direction of the leakage flow, and a side WO of the groove 40 which is on 15 an extended line of the surface 24 of the sealing liner 22, is determined to be 150 or more and 400 or less. 2782879_1 (GHMatters) P87783.AU 18/08/11 i"</p> |
