| 摘要 |
PROBLEM TO BE SOLVED: To provide a regenerative pump capable of improving pump performance by inhibiting the deformation quantity of a casing, and facilitating the management of a clearance between an impeller and the casing. SOLUTION: In the regenerative pump 10 pressurizing fluid introduced from a suction port 4 and feeding it from a delivery port 5 by rotating the impeller 3 in the casing 2, the casing 2 is put in a housing 13 of a pressure resistant vessel, and a communication hole 15 making pressure in a casing outer space 14 formed between the casing 2 and the housing 13 substantially coincide with pressure in the casing 2 is provided. COPYRIGHT: (C)2009,JPO&INPIT
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