The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 09, 2021
Filed:
Dec. 27, 2019
Safran Aircraft Engines, Paris, FR;
Christophe Chabaille, Paris, FR;
Clément Yves Emile Bernard, Paris, FR;
Sébastien Christophe Loval, Paris, FR;
SAFRAN AIRCRAFT ENGINES, Paris, FR;
Abstract
An injector nose for a turbomachine includes a primary fuel circuit terminated by a fuel ejection nozzle defining an injection axis (), and a secondary fuel circuit () comprising a secondary fuel swirler () formed of swirler channels () opening into a terminal fuel ejection portion () of annular shape arranged around the fuel ejection nozzle. Each swirler channel () has a passage section which decreases in a direction going from an upstream end () to a downstream end () of the swirler channel (). The reduction of the passage section of the swirler channels () makes it possible to increase the head loss between the inlet and the outlet of the secondary fuel swirler () and thus notably to accelerate the fuel within the secondary fuel swirler, while allowing lower fuel flow rates.