Patent ID: 9039374
Filing Date: 2015-05-26
Classification: F01D,F05D

Abstract:
1. A turbine rotor of a turbine, a working fluid which flows into the turbine rotor in a radial direction through an inlet passing the turbine rotor and flowing out from an outlet, the turbine rotor comprising: a hub that is rotatable about an axis of rotation; and a plurality of turbine blades that are arranged on a peripheral surface of the hub, and receive and direct the inflowing working fluid from the inlet toward the outlet, wherein the turbine blades each are connected to the hub at a bottom side, or hub side, and have a free end on a tip side, or shroud side, a line extending from the inlet to the outlet along a shroud-side edge of each turbine blade is a shroud line, and the shroud line includes a first shroud line that makes a small change from the inlet toward the outlet in a blade angle with respect to the axis of rotation, a second shroud line that extends from the outlet side of the first shroud line and makes a greater change than that of the first shroud line, and a third shroud line that extends from the outlet side of the second shroud line to the outlet and makes a smaller change than that of the second shroud line, wherein a blade angle of the third shroud line decreases toward the outlet.