| 摘要 |
<p>An impeller for a centrifugal compressor designed for high pressure at a relatively low discharge is characterized by a plurality of flow passages (2) of narrow free pitch positioned between vanes (1) that increase in thickness from a sharp inlet (3) towards the impeller periphery, while the width of the passages is sufficiently large to prevent high friction losses and blockage by thick boundary layers. The free pitch of the flow passages is either constant or decreases towards the outlet. The vanes (1) are either radial, backwards or forwards curved, while the compressor may be single-staged or multi-staged in accordance with the required performance.</p> |
