GAS TURBINE ENGINE COMBUSTION CHAMBER (VERSIONS) Russian patent published in 2010 - IPC F23R3/16 

FIELD: engines and pumps.

SUBSTANCE: proposed combustion chamber comprises housing and fire tube with convective-film cooling arranged in the housing to make air space there between and intended for receiving air fed by compressor. Fire tube lateral part has two sets of orifices for air to pass into fire tube inner space, first set of orifices being intended for passage into its combustion zone and second set to allows passage into mixing zone. Additionally, combustion chamber incorporates annular web arranged in aforesaid air space between housing and fire tube wall lateral part over all its length to separate said space into two circular channels, i.e. inner and outer. Annular web front edge is bent toward the housing and tightly jointed thereto, while its rear edge is arranged with a gap relative to housing. Said web has orifices, each corresponding to those of fire tube wall lateral part. Aforesaid mating orifices are communicated by tubular elements. Annular combustion chamber (second version) is furnished with two annular webs arranged and communicated with fire tube in similar way.

EFFECT: efficient external cooling of fire tube, higher reliability.

2 cl, 3 dwg