| 摘要 |
PROBLEM TO BE SOLVED: To secure smooth rotational operation of an impeller, while shielding a feedback passage of fluid recirculating to the suction port moth part side via a clearance between a front shroud and a pump case from an outer peripheral part of the impeller. SOLUTION: This impeller structure of a pump is constituted so that a shielding member 25 is arranged in the middle of the feedback passage B recirculating the fluid in a suction port mouth 22 via the clearance 30 between the front shroud 20 and the pump case 6 from the outer peripheral part 14a of the impeller 14, and the shielding member 25 is formed of a sliding part 26 installed in one of an opposed surface opposed to the clearance 30 and a sliding contact part 27 installed in the other and slidingly contacting with the sliding part 26 in a close contact state. COPYRIGHT: (C)2009,JPO&INPIT
|
