(19)
(11) EP 2 131 109 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
01.01.2014 Bulletin 2014/01

(43) Date of publication A2:
09.12.2009 Bulletin 2009/50

(21) Application number: 09251512.1

(22) Date of filing: 08.06.2009
(51) International Patent Classification (IPC): 
F23R 3/04(2006.01)
(84) Designated Contracting States:
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK TR
Designated Extension States:
AL BA RS

(30) Priority: 06.06.2008 US 157115

(71) Applicant: United Technologies Corporation
Hartford, CT 06101 (US)

(72) Inventors:
  • Strock, Christopher W.
    Kennebunk, ME 04043 (US)
  • Lutjen, Paul M.
    Kennebunkport, ME 04046 (US)

(74) Representative: Tomlinson, Kerry John 
Dehns St Bride's House 10 Salisbury Square
London EC4Y 8JD
London EC4Y 8JD (GB)

   


(54) Counter-vortex, paired film cooling hole design


(57) An apparatus for use in a gas turbine engine includes a wall (30) defining an exterior face (32), a first film cooling passage (36A) extending through the wall for providing film cooling to the exterior face of the wall, and a second film cooling passage (36B) extending through the wall adjacent to the first film cooling passage for providing film cooling to the exterior face of the wall. The first film passage includes a first vortex-generating structure (40A) for inducing a vortex in a first rotational direction in a cooling fluid passing therethrough, and the second film passage includes a second vortex-generating structure (40B) for inducing a vortex in a second rotational direction in a cooling fluid passing therethrough. The first and second rotational directions are substantially opposite one another.







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