Mixed flow turbine for a turbocharger

摘要

To provide a mixed flow turbine (1) in which supply of working fluid is designed to be supplied at a hub (5) and a shroud (27), and the shape of the inlet-side edges of the blades (7) is made to work effectively, thereby reducing incidence loss. A mixed flow turbine (1) including blades (7) whose leading edges (47) are formed in a convex shape toward the upstream side; and a scroll that is a space formed upstream of the blades (7) by a casing (3) having a shroud (27) that covers the radially external edges of the blades (7), the space being for supplying working fluid toward the leading edges (47) of the blades (7), wherein the scroll is separated by a scroll partition wall (29) into a shroud-side space (31) and a hub-side space (33); and a shroud-side partition wall surface (37) and a hub-side partition wall surface (35) at the rear edge side of the scroll partition wall (29) form a shroud-side inlet channel (45) in which the working fluid flows substantially radially and a hub-side inlet channel (41) in which the working fluid flows substantially in the same direction as the inclination direction of the hub side (39) at the inlet of the blades (7) between the partition wall surfaces (35,37) and portions facing the partition wall surfaces (39,43), respectively.