A BALANCED MIXED FLOW TURBINE WHEEL

摘要

A mixed flow turbine wheel (1) for a turbocharger includes a hub (6) extending axially between a nose (10) and a partial back wall (9) defining an axis of rotation in the axial direction. The partial back wall (9) extends circumferentially from the hub (6) to an outer peripheral edge (11). A plurality of turbine blades (7) are coupled to the hub (6) and extended beyond the peripheral edge (11). The blades (7) are spaced circumferentially about the hub (6) at equal intervals around the axis of rotation. At least one scallop cut (5) is formed in the peripheral edge (11) at the partial back wall (9) for balancing the turbine wheel (1) about the axis rotation.

主权项

1. A mixed flow turbine wheel (1) for a turbocharger comprising:
a hub (6) extending in an axial direction between a nose (10) and a partial back wall (9), said back wall (9) including a peripheral edge (11), wherein said hub (6) defines an axis of rotation (4) extending in said axial direction; a plurality of turbine blades (7), which extend beyond said peripheral edge (11) of said partial back wall (9) are coupled to said hub (6) and disposed in a circumferential direction generally at equal intervals around said axis of rotation (4); and at least one scallop cut (5) formed in said peripheral edge (11) of said partial back wall (9) for balancing said turbine wheel (1), wherein said at least one scallop cut (5) is positioned along said peripheral edge (11) such that said peripheral edge (11) is not symmetrical in said circumferential direction about said axis of rotation (4).