| 摘要 |
PROBLEM TO BE SOLVED: To prevent separation of gas and liquid inside an impeller with simple structure. SOLUTION: In this impeller structure of a pump, an air passage part 40 is arranged inside vanes 13, and a suction port of the air passage part 40 is opened on front end surface turning forward in the rotational direction of the impeller 14 on the inner peripheral side of the vanes 13, and an exhaust port of the air passage part 40 is opened on a front end surface turning backward in the rotational direction of the impeller 14 on the outer peripheral side of the vanes 13. COPYRIGHT: (C)2009,JPO&INPIT
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