| 摘要 |
<p>Provided in a pump housing (PH) surrounding an impeller (21) are an inlet port (19) and an outlet port (20), which are spaced away from each other in a rotating direction of the impeller (21), a pump flow passage (23) corresponding to vane grooves (22) of the impeller (21) and extending from the inlet port (19) to the outlet port (20) along the rotating direction of the impeller, and a partition (25) for partitioning between the outlet port (20) and the inlet port (19) along the rotating direction of the impeller. A flow passage communicating portion (29) for communication between the inlet port (19) and the pump flow passage (23) is offset relative to the partition (25) in the rotating direction of the impeller, and a flow passage enlarging portion (30) is provided between the partition (25) and the flow passage communicating portion (29).</p> |
