EP 2304187 A1 20110406 - AXIAL TURBO ENGINE WITH LOW GAP LOSSES
Title (en)
AXIAL TURBO ENGINE WITH LOW GAP LOSSES
Title (de)
AXIALTURBOMASCHINE MIT GERINGEN SPALTVERLUSTEN
Title (fr)
TURBOMACHINE AXIALE À PERTES PAR JEU RÉDUITES
Publication
Application
Priority
- EP 2009059173 W 20090716
- EP 08012959 A 20080717
- EP 2009058681 W 20090708
- EP 09797510 A 20090716
Abstract (en)
[origin: EP2146053A1] The machine i.e. axial compressor (1), has rotor blades (2) comprising a front edge (8), a radially outer free blade tip (15) and an annular enclosure (13). Rotor blades have a radial projection (18) in a region of the front edge on the blade tip. The annular enclosure has an annular radial recess (17) at an annulus inner side (14). The recess is arranged at a radial distance from enveloping ends of the blade tip such that a gradient of the radial projections on the side facing the radial gap (16) emulates a gradient of the radial recess along a main flow direction of the engine.
IPC 8 full level
F01D 5/20 (2006.01); F01D 5/14 (2006.01); F01D 11/08 (2006.01)
CPC (source: EP US)
F01D 5/143 (2013.01 - EP US); F01D 5/145 (2013.01 - EP US); F01D 5/20 (2013.01 - EP US); F01D 11/08 (2013.01 - EP US); F05D 2250/71 (2013.01 - EP US); Y02T 50/60 (2013.01 - EP US)
Citation (search report)
See references of WO 2010007137A1
Designated contracting state (EPC)
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 SM TR
Designated extension state (EPC)
AL BA RS
DOCDB simple family (publication)
EP 2146053 A1 20100120; CA 2731092 A1 20100121; CA 2731092 C 20161101; CN 102099547 A 20110615; EP 2304186 A1 20110406; EP 2304186 B1 20191113; EP 2304187 A1 20110406; JP 2011528081 A 20111110; JP 5080689 B2 20121121; MX 2011000649 A 20110302; MX 336351 B 20160106; RU 2011105788 A 20120827; RU 2498084 C2 20131110; US 2011189020 A1 20110804; US 8647054 B2 20140211; WO 2010006975 A1 20100121; WO 2010007137 A1 20100121; WO 2010007137 A8 20110310
DOCDB simple family (application)
EP 08012959 A 20080717; CA 2731092 A 20090708; CN 200980127851 A 20090708; EP 09797467 A 20090708; EP 09797510 A 20090716; EP 2009058681 W 20090708; EP 2009059173 W 20090716; JP 2011517873 A 20090708; MX 2011000649 A 20090708; RU 2011105788 A 20090708; US 200913054190 A 20090708