Patent ID: 7284953
Filing Date: 2007-10-23
Classification: F01D,F05D,Y02T

Abstract:
1. A gas turbine engine comprising: a housing surrounding a stationary vane and a rotating rotor, a turbine section including said stationary vane and said rotating rotor; at least one of said stationary vane and said rotating rotor being provided with a radially outer cooling air flow from a location adjacent a radially outer position in said housing; and a dirt separator positioned in a flow path of said radially outer cooling air flow, said dirt separator being operable to remove impurities from said radially outer cooling air flow, such that air moving downstream of said dirt separator, and toward said at least one of said stationary vane and said rotating rotor carries less impurities, said dirt separator having an upstream end which will separate the cooling air flow into a radially outer flow having more entrained particulates, and a radially inner cleaner cooling air flow.