EP 3204616 A1 20170816 - CENTRIFUGAL COMPRESSOR DIFFUSER PASSAGE BOUNDARY LAYER CONTROL
Title (en)
CENTRIFUGAL COMPRESSOR DIFFUSER PASSAGE BOUNDARY LAYER CONTROL
Title (de)
STEUERUNG DER GRENZSCHICHT DES DIFFUSORDURCHGANGS EINES ZENTRIFUGALVERDICHTERS
Title (fr)
COMMANDE DE COUCHE LIMITE DE PASSAGE DE DIFFUSEUR DE COMPRESSEUR CENTRIFUGE
Publication
Application
Priority
- US 201462060991 P 20141007
- US 2015044673 W 20150811
Abstract (en)
[origin: WO2016057112A1] A centrifugal compressor diffuser (42) includes a plurality of diffuser flow passages (22) extending through an annular diffuser housing (20) and circumferentially bounded by diffuser vanes (23) and axially bounded by forward and aft walls (101, 100). A diffuser boundary layer bleed (96) for the passages may include boundary layer bleed apertures (106) or slots (130) disposed through the forward wall (101) and a downstream facing wall (142) canted at an acute cant angle to a downstream diffuser airflow direction (103) in the passages. Diffuser bleed flow (112) is bled from a diffuser boundary layer. Boundary layer bleed apertures can be located downstream of throat sections (28) of the flow passages near pressure sides of the vanes. A centrifugal compressor (18) may include the diffuser surrounding an annular centrifugal compressor impeller (32) and apparatus for flowing impeller bleed flow (102) from a radial clearance between an impeller tip (36) and a diffuser annular inlet (27) with diffuser bleed flow either mixed or separately to cool a turbine (16).
IPC 8 full level
F01D 9/04 (2006.01); F02C 3/08 (2006.01); F02C 6/08 (2006.01); F02C 7/18 (2006.01); F04D 27/02 (2006.01); F04D 29/44 (2006.01); F04D 29/68 (2006.01)
CPC (source: CN EP US)
F01D 9/045 (2013.01 - CN EP US); F02C 3/08 (2013.01 - CN EP US); F02C 6/08 (2013.01 - CN EP US); F02C 7/18 (2013.01 - CN EP US); F04D 17/10 (2013.01 - US); F04D 27/009 (2013.01 - US); F04D 29/284 (2013.01 - US); F04D 29/444 (2013.01 - CN EP US); F04D 29/682 (2013.01 - CN EP US); F01D 25/12 (2013.01 - US); F05D 2220/32 (2013.01 - US); F05D 2240/12 (2013.01 - CN EP US); F05D 2250/324 (2013.01 - CN EP US); F05D 2270/101 (2013.01 - CN EP US); F05D 2270/17 (2013.01 - CN EP US)
Citation (search report)
See references of WO 2016057112A1
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)
WO 2016057112 A1 20160414; CA 2963914 A1 20160414; CN 107110180 A 20170829; EP 3204616 A1 20170816; JP 2017530299 A 20171012; US 2017248155 A1 20170831
DOCDB simple family (application)
US 2015044673 W 20150811; CA 2963914 A 20150811; CN 201580054735 A 20150811; EP 15750907 A 20150811; JP 2017518190 A 20150811; US 201515517262 A 20150811