Impeller of centrifugal compressor

摘要

Provided is an impeller of a centrifugal compressor including: a hub; a plurality of blades protruding from a surface of the hub, wherein a passage is formed by the hub and a blade being adjacent with the hub, so that a fluid, flowing in along an axial direction at an inner circumferential side in a radial direction, is flowed out toward an outer circumferential side in a radial direction; each of the plurality of blades includes a main body part and a leading edge, the main body part including a pressure side and a suction side; an angle between a component central line of the main body part and the axial direction increases from an inner end toward an outer end; and a radius of curvature at a central position, intersecting with the component central line of the leading edge, decreases from the inner end toward the outer end.

主权项

1. An impeller of a centrifugal compressor, the impeller comprising:
a hub shaped like a disk; a plurality of blades protruding from a surface of the hub and provided radially, wherein a passage is formed by the hub and a blade being adjacent with the hub, so that a fluid, flowing in along an axial direction at an inner circumferential side in a radial direction, is flowed out toward an outer circumferential side in a radial direction; each of the plurality of blades comprises a main body part and a leading edge, the main body part comprising a pressure side and a suction side, the pressure side receiving a pressure from a fluid flowing through the passage which is relatively high, the suction side receiving a pressure from a fluid flowing through the passage which is relatively low, and the leading edge being shaped as a curved surface connecting the pressure side and the suction side at the inner circumferential side in the radial direction; an angle between a component central line of the main body part and the axial direction increases from an inner end toward an outer end, the inner end connecting with the hub; and a radius of curvature of the leading edge at a central position, intersecting with the component central line of the main body part, decreases from the inner end toward the outer end.