| 摘要 |
PROBLEM TO BE SOLVED: To provide a centrifugal fluid machine capable of reducing an influence of leakage flow on a main flow.SOLUTION: A centrifugal fluid machine includes: a rotating shaft 4 rotating around an axis O; an impeller 6 for allowing a fluid F flowing in from an inlet in a direction of the axis O, to flow toward an outer side in a radial direction from an outlet; an internal casing 3 covering the rotating shaft 4 and the impeller 6, and defining a flow channel 7 in which the fluid F flowing into the impeller 6 is circulated; and a guide portion 30 of a mouth ring 29 having an inclined face 30a to guide the fluid F flowing out from the outlet of the impeller 6 and flowing into the flow channel 7 through a clearance gap S formed between the cover 20 of the impeller 6 and the internal casing 3, to the inlet of the impeller 6 so that a speed of the fluid F has a component of the direction of the axis O. |
