公开(公告)号：US20180171871A1

公开(公告)日：2018-06-21

申请号：US15380205

申请日：2016-12-15

申请人： Pratt & Whitney Canada Corp.

发明人： Hien Duong ,  Vijay Kandasamy ,  Rakesh Muniyappa

IPC分类号： F02C7/14 ,  F02K3/115 ,  F02K3/06 ,  F02C7/18

CPC分类号： F02C7/14 ,  F02C7/04 ,  F02K3/06 ,  F02K3/115 ,  F05D2260/213 ,  Y02T50/676

摘要： A gas turbine engine that comprises an engine core having a compressor, a turbine, a combustor, and a rotation axis. The engine further comprising a fan case wall having a radially-inner surface, a by-pass duct between the fan case wall and around the engine core, a plurality of struts circumferentially distributed and extending across the by-pass duct, a surface cooler adjacent to the radially-inner surface of the fan case and configured to be exposed to a by-pass air flow through the by-pass duct during operation of the gas turbine engine, the surface cooler fluidly communicating with a fluid circuit of the engine requiring cooling for of a fluid, and a recirculation conduit extending between an inlet in the radially-inner surface of the fan case disposed downstream of the surface cooler and an outlet in the radially-inner surface of the fan case wall disposed upstream of the surface cooler.