Patent ID: 9217331
Filing Date: 2015-12-22
Classification: B33Y,F01D,F04D,F05B,F05D,F16F

Abstract:
1. A method of balancing a rotor assembly wherein the rotor assembly includes a compressor wheel that is rotatably driven, the method comprising: forming the compressor wheel as part of the rotor assembly, the compressor wheel formed to have a hub supporting a plurality of vanes disposed around the hub and a back wall extending from the hub wherein the back wall has an outer peripheral surface, and a nose extending from the hub; determining a correction mass to add to the rotor assembly to balance the rotor assembly; and adding the correction mass to the compressor wheel through at least one of: (a) forming the correction mass as a series of beads on the hub, wherein the plurality of vanes has a profile and further comprising forming the series of beads in a row that matches the profile; or (b) forming scallops in the outer peripheral surface and wherein the step of adding the correction mass to the compressor wheel comprises adding the correction mass in one or more of the scallops.