| 摘要 |
PROBLEM TO BE SOLVED: To provide an axial flow pump of stable pressure characteristics. SOLUTION: A boss ratio Dh/Dt which is a ratio of hub diameter Dh of a rotary shaft body 8' composing a rotor to tip diameter Dt of an impeller 9 in an axial flow pump is enlarged. Specifically, the boss ratio is set on 0.65-0.85, preferably 0.7-0.8 to reduce friction loss while suppressing generation of centrifugal force effect and to make pressure characteristics flat. COPYRIGHT: (C)2005,JPO&NCIPI
|
