| 摘要 |
PROBLEM TO BE SOLVED: To improve the efficiency of a pump by inhibiting the increase of the energy loss caused by increase in the low energy fluid inside a blade pas sage. SOLUTION: In the impeller mounted in a centrifugal pump of a mixed flow pump, a blade 3 is inclined relative to a main shroud 2 in the reverse direction to the direction of rotation at least in the outer periphery of the main shroud 2 which is the exit of a fluid.
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