Aeromechanical injection system with a primary anti-return...

Details Aeromechanical injection system with a primary anti-return... Aeromechanical injection system with a primary anti-return...

2005-11-01

2005-11-01

Kim, Ted (Department: 3746)

Power plants

Combustion products used as motive fluid

Combustion products generator

C239S404000

Reexamination Certificate

active

06959551

ABSTRACT:
An injection system for a turbomachine combustion chamber, the system comprising a fuel injection nozzle for vaporizing fuel in the combustion chamber and a mixer/deflector assembly coaxial with the injection nozzle and serving to mix fuel and oxidizer and to diffuse the mixture in the combustion chamber, said mixer/deflector assembly comprising a primary swirler and a secondary swirler disposed at a determined distance apart from each other in the axial direction and separated by a Venturi device disposed coaxially with the injection nozzle, the primary swirler being fixed securely to the injection nozzle and being spaced apart therefrom by a constant radial distance which is determined in such a manner that the fuel vaporized by the injection nozzle can under no circumstances impact on the primary swirler. The Venturi device preferably has an inside surface that presents an upstream portion with a slope discontinuity P.

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