| 摘要 |
<p>A fluid pump comprising first and second impellers 13, 20 mounted in respective cavities 12, 19, the first impeller being configured to provide a low pressure output, the second impeller being a regenerative impeller and being configured to provide a high pressure output. A fluid passage to an inlet 15 of the first impeller cavity is defined through one or more apertures 21 in the second impeller. The second impeller may be located on the inlet side of the first, centrifugal impeller and the aperture located substantially radially centrally within the second impeller.</p> |
