| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a vane pump capable of inhibiting a drop of pump efficiency accompanying occurrence of turbulence, vortex and the like of fluid occurring at a section near an intake opening or a delivery opening. Ž<P>SOLUTION: A suction opening 11 leading in fluid is provided to face a section of an annular chamber 6 from a center position Pmi to a complete position Pp of an expansion section in which a pump chamber 9 expands. Consequently, a status in which fluid led into the annular chamber 6 from a suction passage 14 and fluid moving with movement of a vane 8 collide each other near the suction opening 11 can be inhibited, and drop of pump efficiency caused by occurrence of turbulence and vortex of flow near the suction opening 11 can be inhibited. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
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