Patent ID: 7517187
Filing Date: 2009-04-14
Classification: F04D,F16C

Abstract:
1. A high-speed rotor assembly for an overhung centrifugal compressor, coupled to a power output mechanism, comprising: a housing, consisting of a first side, a second side, and having a plurality of circular ribs arranged therein, wherein the power output mechanism is disposed at the first side; a rotor component, arranged inside the housing, and further comprising: a sleeve, a first bearing, a second bearing, a transmission shaft, a plurality of resilient elements and a spacer, wherein an end of the sleeve is connected to one of the plurality circular ribs while another end thereof is hanging freely, and the first bearing and the second bearing are arranged inside the sleeve with the spacer disposed in-between abutting against the inner races of both the first bearing and the second bearing, and the plurality of resilient elements are arranged inside a plurality of bearing studs of the sleeve's inner races for exerting a specified preload on the outer races of the first and the second bearings, and, the transmission shaft is disposed passing through the spacer and the two bearings; an oil film damper, arranged at a position between an end of a sleeve of the rotor component and one of the circular rib; and an impeller, being disposed at the second side of the housing to be coupled to an end of a transmission shaft of the rotor component.