EP 2935900 A1 20151028 - VACUUM EJECTOR WITH MULTI-NOZZLE DRIVE STAGE
Title (en)
VACUUM EJECTOR WITH MULTI-NOZZLE DRIVE STAGE
Title (de)
VAKUUMEJEKTOR MIT MEHRFACHDÜSEN-ANTRIEBSSTUFE
Title (fr)
ÉJECTEUR À VIDE DOTÉ D'UN ÉTAGE D'ENTRAÎNEMENT À TUYÈRES MULTIPLES
Publication
Application
Priority
EP 2012076673 W 20121221
Abstract (en)
[origin: WO2014094878A1] So as to reduce its size, the invention provides a multistage ejector for generating a vacuum across a first, drive stage comprising a drive nozzle array for generating drive flow of air from a compressed air source, the drive nozzle array including two or more nozzles arranged to feed respective air jets together substantially directly into a common outlet of the drive stage so as to entrain air in a volume surrounding the air jets into the drive flow in order to generate a vacuum across the drive stage, the outlet of the drive stage being the inlet of a converging-diverging nozzle of a second stage, the converging-diverging nozzle being arranged to direct said air as a second stage air j et substantially directly into an outlet of the second stage so as to entrain air in a volume surrounding the second stage air jet into the flow in order to generate a vacuum across the second stage.
IPC 8 full level
F04F 5/20 (2006.01); F04F 5/22 (2006.01); F04F 5/46 (2006.01)
CPC (source: EP US)
F04F 5/22 (2013.01 - EP US); F04F 5/466 (2013.01 - EP US); F04F 5/467 (2013.01 - EP US)
Citation (search report)
See references of WO 2014094878A1
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 2014094878 A1 20140626; CN 105074228 A 20151118; EP 2935900 A1 20151028; JP 2016500414 A 20160112; US 2015337866 A1 20151126
DOCDB simple family (application)
EP 2012076673 W 20121221; CN 201280078224 A 20121221; EP 12813860 A 20121221; JP 2015548229 A 20121221; US 201214745292 A 20121221