Patent ID: 8096777

Claim:
A mixed flow turbine or a radial turbine comprising: a hub; and a plurality of blades provided on an outer circumference surface of the hub at substantially equal intervals, each of the blades having a main section and an inflected section, the inflected section located at a leading edge side of the blade, wherein the main section of each of the blades is inflected such that a camber line at the main section is convex-curved towards a rotational direction side as seen in a direction of a rotational axis, wherein the inflected section of each of the blades is inflected such that a camber line at the inflected section in a sectional surface along the outer circumference surface of the hub is concave-curved against the rotational direction side as seen in the direction of the rotational axis, wherein a rate of change of the camber line at the inflected section towards a circumferential direction including turnover at the inflected section becomes greater as a radial direction position becomes smaller, and wherein the main section and the inflected section are located on opposite sides of an inflection point, the inflection point being located on a camber line of the blade closer to the leading edge side than a trailing edge side.