Diffuser for gas turbine engine

Details Diffuser for gas turbine engine Diffuser for gas turbine engine

2007-02-27

2007-02-27

Rodriguez, William H. (Department: 3746)

Power plants

Combustion products used as motive fluid

Combustion products generator

C415S211200

Reexamination Certificate

active

10602610

ABSTRACT:
A gas turbine engine pre-diffuser40is generally annular, including radially inner and radially outer walls40and42and a generally cylindrical midline48defined between the walls. The pre-diffuser40includes a central member46which forces air flowing through the pre-diffuser40to separate, initially to be directed away from the midline48before subsequently being allowed to diffuse back towards the midline48. The majority of the diffusion takes place on the walls of the central member and is thus in an inner region of the annulus of air ejected from the pre-diffuser to pass to the combustor. Any boundary losses therefore do not significantly effect air at the extremities of this annulus, this air being destined for the annuli of the combustor and requiring relatively high energy levels.

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