| 摘要 |
PROBLEM TO BE SOLVED: To provide a turbine fluid pump impeller to improve the pump efficiency. SOLUTION: A turbine fuel pump impeller has a circular hub, a ring-shaped strip ring, and a ring-shaped vane row. The hub has a hub outer surface substantially extending around an outer circumferential edge thereof. The strip ring has an inner ring surface substantially extending around an inner circumferential edge thereof. The hub, the strip ring and the vane row are substantially concentric with each other, the vane row is disposed at a position in the radial direction between the hub and the strip ring, the vane row has a plurality of vanes and a plurality of vane pockets, and the vane pump is formed between the vanes. Each of the plurality of vanes has a straight base part and a curved tip part. The straight base part extends in a first direction from the hub outer surface, and the curved tip part extends to the inner ring surface from an outer end of the base part. A tangential line of at the curved tip part is directed in the second direction. The first direction is behind the second direction with respect to the rotational direction of the impeller. COPYRIGHT: (C)2004,JPO
|
