Patent ID: 6189311
Filing Date: 2001-02-20
Classification: F28D

Abstract:
A counter-rotating gas turbine engine, said counter-rotating gas turbine engine comprising:turbine;a compressor turbine;said turbine and said compressor turbine being mounted for rotation in opposite direction;at least two different shafts for said turbine and said compressor turbine;a plurality of bearings, each of said at lest two different shafts being journalled in respective bearings of said plurality of bearings;a compressor mounted for rotation together with said compressor turbine;an exhaust duct of said compressor turbine;a combustor mounted immediate upstream of said turbine;a heat exchanger having a casing that comprises an external annular wall, an internal annular wall, a first end wall adjacent to said compressor, a second end wall adjacent to said combustor, said external annular wall, said internal annular wall, and said first and second end wall defining an interior heat exchange space of said heat exchanger;a heat insulating layer of said heat exchanger, said heat insulting layer being located interior and adjacent to said external annular wall;said bearings, said combustor and said exhaust duct being attached to said external annular wall of said heat exchanger.