Nozzle assembly with fuel tube deflector

Details Nozzle assembly with fuel tube deflector Nozzle assembly with fuel tube deflector

2006-11-28

2006-11-28

Nguyen, Dinh Q. (Department: 3752)

Fluid sprinkling, spraying, and diffusing

Flow deflecting or rotation controlling means

C239S463000, C239S467000, C239S504000, C239S533200, C239S403000, C239S429000, C239S432000

Reexamination Certificate

active

07140560

ABSTRACT:
A deflector at the downstream end of a fuel tube deflects incoming fuel into an annular fuel channel in a fuel swirler of an injector. The deflector prevents direct impact of the cooler fuel on the exposed walls of the swirler body. The deflector can be formed by a tab or other integral portion of the heatshield, or as a separate piece fixed to the heatshield or swirler body. The deflector minimizes disruption of flow through any flow slots that are covered by the deflector, and may have i) a relatively small circumferential extent, such that the deflector covers only a few flow slots, ii) flow openings or slots that allow a portion of the fuel to flow inwardly of the deflector into the otherwise covered flow slot(s), or iii) a space or gap between the side(s) of the deflector and the inner walls of the annular channel.

REFERENCES:
patent: 4962889 (1990-10-01), Halvorsen
patent: 5351477 (1994-10-01), Joshi et al.
patent: 5605287 (1997-02-01), Mains
patent: 5630319 (1997-05-01), Schilling et al.
patent: 5761907 (1998-06-01), Pelletier et al.
patent: 6427930 (2002-08-01), Mei et al.

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