Patent ID: 7402020
Filing Date: 2008-07-22
Classification: F04D,F05D

Abstract:
1. A compressor, comprising: a housing including a compressor housing portion; a shaft supported in the housing and having a thrust runner, a hydrodynamic thrust bearing adjacent to the thrust runner, the hydrodynamic thrust bearing having upstream and downstream sides, and a turbine rotor and a compressor rotor mounted on the shaft; a seal arranged between the rotor and the housing portion, and an orifice in the housing at the downstream side of the hydrodynamic thrust bearing; and wherein the housing includes a turbine housing portion with the turbine rotor arranged in the turbine housing portion, the thrust runner arranged between the compressor and turbine housing portions, a first bearing exit cavity arranged between the compressor and turbine housing portions at the downstream side, the compressor housing having compressor and bearing sides respectively expose to the compressor rotor and the first bearing cavity.