Ventilation of a cavity placed downstream of a centrifugal compressor impeller of a turbomachine,申请号EP20070290843-传众专利搜索

Ventilation of a cavity placed downstream of a centrifugal compressor impeller of a turbomachine

申请公布号：EP1881181(A3)

申请号：EP20070290843

申请日期：2007.07.04

申请公布日期：2008.04.09

申请人：

SNECMA

发明人：ARGAUD, THIERRY;BRUNET, ANTOINE ROBERT ALAIN;LEININGER, JEAN-CHRISTOPHE

分类号：F02C7/18;F02C3/08

主分类号：F02C7/18

摘要：The turbomachine has an annular diffuser arranged at an exit of a centrifugal compressor. The diffuser has a downstream annular flange (26) with an L shaped section, which delimits an annular cavity ventilated by deducting the air at the exit, with a radial downstream surface (70) of an impeller (36). A square, rectangular or triangle shaped annular deflector (80) is mounted in the cavity and extends between the surface and the flange to oppose to increase the hot air along the surface, to accelerate the deducted air at the exit and to drive the hot air deducted towards the downstream.