EP 2568118 A1 20130313 - Gas-turbine-component
Title (en)
Gas-turbine-component
Title (de)
Gasturbinenkomponente
Title (fr)
Composant de turbine à gaz
Publication
Application
Priority
EP 11180912 A 20110912
Abstract (en)
Gas-turbine-component (GTC) to be exposed to a hot-gas (HG) comprising at least one film-cooling-hole (FCH) joining into a hot-gas-path (HGP) at an outer surface (OSF) of the gas-turbine-component (GTC), wherein the film-cooling-hole (FCH) is a channel (FC) through a wall-thickness (WTH) of a wall (W) extending from an inner surface (ISF) to said outer surface (OSF), wherein the cooling channel (FC) extends along an axis (X), wherein said cooling fluid (CF) is ejected into said hot-gas-path (HGP), comprising a velocity component (VC) into said flow direction (FD). To improve the cooling-efficiency at least the part of the edge of said inner orifice (IOF) of the cooling channel (FC) joining the inner surface (ISF), which has an angle (±) smaller 90° with said wall's inner surface (ISF) is made blunt by widening the inner orifice (IOF) such that the cooling fluid (CF) entering the channel (FC) is accelerated and deflected more moderately than without the widening.
IPC 8 full level
F01D 5/18 (2006.01)
CPC (source: EP)
F01D 5/186 (2013.01); F05D 2250/292 (2013.01); F05D 2250/323 (2013.01); F05D 2250/324 (2013.01); F05D 2250/70 (2013.01); F05D 2260/221 (2013.01)
Citation (search report)
- [X] EP 0992654 A2 20000412 - ROLLS ROYCE PLC [GB]
- [X] EP 0365195 A2 19900425 - ROLLS ROYCE PLC [GB]
- [I] EP 1975372 A1 20081001 - SIEMENS AG [DE]
- [A] WO 2007006619 A1 20070118 - SIEMENS AG [DE], et al
- [A] US 2004232122 A1 20041125 - BYRD PAMELA J [GB], et al
Designated contracting state (EPC)
AL 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 RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
DOCDB simple family (application)
EP 11180912 A 20110912; EP 2012067167 W 20120904