| 摘要 |
<p>In a centrifugal impeller put to various uses in recent years and used for centrifugal compressors and the like which are required to improve their efficiency by increasing their compression ratio, the invention provides a centrifugal impeller which has its compression efficiency improved by making constant the rate of change of a fluid passage area from the suction to delivery side of a flow channel and which makes possible a free design applicable to all uses; and a method of designing the same. Accordingly, a centrifugal impeller (impeller 1) comprising a base (2) which is circular as seen in a plan view, and a plurality of circumferentially equi-spaced vanes (3) installed on the base (2) to extend from the center to the outer periphery, wherein the vanes (3) are formed on the basis of a hyperbolic shape or a curve using the rate of change thereof, and the fluid passage area of a flow channel formed by the vanes (3) is reduced with a constant rate of change from the liquid suction to delivery surface or it is made constant.</p> |
