Single-circuit fuel injector for gas turbine combustors
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United States of America Patent
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Apr 8, 2003
Grant Date -
N/A
app pub date -
Aug 8, 2001
filing date -
Aug 8, 2001
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A single circuit fuel injector apparatus having a bifurcated recirculation zone is provided. The single circuit injector includes an injector tip having an aft facing tapered surface which is communicated with a plurality of fuel injector ports. A radially inward tapered conical air splitter directs sweep air over the tapered injector tip. An air blast atomizer filmer lip is disposed concentrically outward from the tapered tip. In a low power operating mode, fuel exiting the fuel injector ports is entrained within a centralized sweep air stream. In a high power operating mode, the majority of the fuel exiting the fuel injection ports has sufficient momentum to carry it across the sweep air stream so that it falls upon the main fuel filmer lip and is entrained in an outer main air stream.
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