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:
Jan. 02, 2007
Filed:
Jun. 15, 2004
Frederic Beule, Brunoy, FR;
Michel Desaulty, Vert Saint Denis, FR;
Frederic Beule, Brunoy, FR;
Michel Desaulty, Vert Saint Denis, FR;
Snecma Moteurs, Paris, FR;
Abstract
The invention relates to a turbomachine annular combustion chamber () comprising an outer axial wall (), an inner axial wall (), and a chamber bottom end () connecting the said walls, the chamber bottom end being provided with several passages () enabling initiation of a cooling air film (D) along the hot inner surface () of the outer axial wall and initiation of a cooling air film (D) along the hot inner surface () of the inner axial wall, the outer axial wall and the inner axial wall being multi-perforated roughly over their full length in order to enable reinforcement of the cooling air films. According to the invention, the outer axial wall and the inner axial wall are provided, in an upstream part, with a first zone () of perforations () formed such that cooling air is introduced inside the combustion chamber in reverse flow.