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:
Apr. 26, 2005
Filed:
Apr. 15, 2003
Baolan Shi, Swampscott, MA (US);
Robert Francis Manning, Newburyport, MA (US);
Randall Brent Rydbeck, Hamilton, MA (US);
Nigel Brian Thomas Langley, Danvers, MA (US);
Baolan Shi, Swampscott, MA (US);
Robert Francis Manning, Newburyport, MA (US);
Randall Brent Rydbeck, Hamilton, MA (US);
Nigel Brian Thomas Langley, Danvers, MA (US);
General Electric Company, Schenectady, NY (US);
Abstract
A turbine nozzle includes outer and inner bands integrally joined to a vane having a three-pass serpentine flow circuit between opposite pressure and suction sidewalls. The outer band includes an inlet for channeling cooling air into a first channel of the circuit located behind a leading edge of the vane. A first outlet is disposed in the inner band at the bottom of the first channel where it joins the second channel of the circuit. A second outlet is also disposed in the inner band at the bottom of a third channel of the circuit which is disposed in flow communication with the second channel. The first channel behind the leading edge is smooth except for corresponding rows of first and second turbulators spaced laterally apart. The first turbulators bridge the pressure and suction sidewalls directly behind the leading edge, and the second turbulators are disposed behind the suction sidewall.