公开(公告)号：EP2809907A4

公开(公告)日：2015-10-28

申请号：EP13768600

申请日：2013-01-09

Applicant: UNITED TECHNOLOGIES CORP

Inventor： MUNSELL PETER M ,  STRIPINIS PHILIP S

IPC: F02C6/08 ,  F01D25/18 ,  F01D25/22 ,  F02C7/16 ,  F02C7/18

CPC classification number: F02C7/18 ,  F01D25/183 ,  F01D25/22 ,  F02C6/08 ,  F02C7/185 ,  Y02T50/675 ,  Y10T29/49359

Abstract: A buffer system for a gas turbine engine includes a heat exchanger having a first inlet and outlet and a second inlet and outlet. The first outlet is configured to provide a cooled pressurized fluid. First and second air sources are selectively fluidly coupled to the first inlet. A third air source is fluidly coupled to the second inlet. Multiple fluid-supplied areas are located remotely from one another and are fluidly coupled to the first outlet. The multiple fluid-supplied areas include multiple bearing compartments. A method of providing pressurized air in a gas turbine engine includes selectively providing pressurized air from multiple air sources to a heat exchanger to cool the pressurized air. The cooled pressurized air is distributed to multiple fluid-supplied areas within the gas turbine engine.

公开(公告)号：EP2812548A4

公开(公告)日：2015-10-21

申请号：EP13747274

申请日：2013-02-05

Applicant: UNITED TECHNOLOGIES CORP

Inventor： WANG CHENG-ZHANG ,  PHILLIPS THOMAS G ,  CLOUD DAVID F ,  MUNSELL PETER M

IPC: F02C3/04 ,  F01D9/02 ,  F01D9/06 ,  F02C6/08 ,  F02C7/04 ,  F02C7/18 ,  F02C9/18 ,  F02K3/00

CPC classification number: F02C6/08 ,  F01D9/023 ,  F01D9/065 ,  F02C7/185 ,  F02C9/18 ,  F05D2260/601 ,  F05D2270/17 ,  F05D2270/301 ,  Y02T50/675

Abstract: A bleed air supply system for a gas turbine engine comprising a duct having an inlet end and extending to an outlet end. The inlet end of the duct is provided with a central insert. In another feature, there may be a plurality of ducts, and inlet ends of the plurality of ducts being spaced by at least 90°. In another feature, a compressor may have a diffuser with a shroud ending upstream of the downstream end of an inner shroud, having an outer shroud ending at a location upstream of a downstream end of an inner shroud at locations circumferentially aligned with an inlet end of the duct.