EP 3697552 B1 20210901 - HOLLOW TURBINE BLADE WITH REDUCED COOLING AIR CONSUMPTION
Title (en)
HOLLOW TURBINE BLADE WITH REDUCED COOLING AIR CONSUMPTION
Title (de)
HOHLE TURBNINENSCHAUFEL MIT REDUZIERTEM KÜHLLUFTVERBRAUCH
Title (fr)
AUBE DE TURBINE CREUSE À PRÉLÈVEMENT D'AIR DE REFROIDISSEMENT RÉDUIT
Publication
Application
Priority
- FR 1759722 A 20171017
- FR 2018052536 W 20181011
Abstract (en)
[origin: WO2019077237A1] Turbomachine hollow turbine blade comprising a plurality of rising cavities (23, 25, 29, 31) communicating with a channel (18) of the blade via a plurality of standard dust-removal holes (21A, 21B, 21C) intended for the removal of dust, and via a plurality of inclined cooling bores (20A, 20B, 20C, 20D) intended for cooling a low wall (18B) of the channel, opening on a lower face (12C) of the blade, at least one rising cavity (25) having an apex that has no dust-removal hole, and an inclined cooling bore produced in its side wall and intended to cool the low wall of the channel is enlarged in order to have a diameter at least equal to the standard diameter of a dust-removal hole and to thus also serve as a dust-removal hole (51), such that the flow of air taken in for the cooling of the blade is reduced, at least one of the cavities of the blade arranged opposite the top of one of the rising cavities having an increased volume corresponding at least to a volume subtracted at the top of the rising cavity.
IPC 8 full level
B22C 9/04 (2006.01); B22C 9/10 (2006.01); F01D 5/18 (2006.01); F01D 5/20 (2006.01)
CPC (source: EP US)
B22C 9/04 (2013.01 - EP); B22C 9/10 (2013.01 - EP US); F01D 5/187 (2013.01 - EP US); F01D 5/20 (2013.01 - EP US); F05D 2230/211 (2013.01 - EP US); F05D 2240/307 (2013.01 - EP US); F05D 2260/202 (2013.01 - EP US); F05D 2260/607 (2013.01 - EP US)
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
DOCDB simple family (publication)
FR 3072415 A1 20190419; FR 3072415 B1 20201106; CN 111163877 A 20200515; CN 111163877 B 20220125; EP 3697552 A1 20200826; EP 3697552 B1 20210901; US 11389860 B2 20220719; US 2021187594 A1 20210624; WO 2019077237 A1 20190425
DOCDB simple family (application)
FR 1759722 A 20171017; CN 201880063947 A 20181011; EP 18799584 A 20181011; FR 2018052536 W 20181011; US 201816756194 A 20181011