EP 2209997 A1 20100728 - NOISE ATTENUATION DEVICE FOR A CENTRIFUGAL COMPRESSOR DISCHARGE OR SUCTION NOZZLE
Title (en)
NOISE ATTENUATION DEVICE FOR A CENTRIFUGAL COMPRESSOR DISCHARGE OR SUCTION NOZZLE
Title (de)
RAUSCHUNTERDRÜCKUNGSVORRICHTUNG ZUR ENTLADUNG EINES ZENTRIFUGALKOMPRESSORS ODER EINER ABSAUGDÜSE
Title (fr)
DISPOSITIF D'ATTÉNUATION DE BRUIT POUR UNE BUSE DE DÉCHARGE OU D'ASPIRATION DE COMPRESSEUR CENTRIFUGE
Publication
Application
Priority
- EP 2008065934 W 20081120
- EP 07022502 A 20071120
- EP 08851643 A 20081120
Abstract (en)
[origin: EP2063130A1] Noise damper for a radial (centrifugal) compressor, to be either integrally formed in the compressor housing or provided as a pipe section piece to be mounted on one of the housing nozzles. The damper consists of one or more side resonators, possibly of the Helmholtz-type. The side resonators may be arranged in series in the flow direction. A simple, modular and cost-effective construction of the damper consists in juxtaposing rings (diaphragms, discs) having concentric outer diameters but inner contours that are not necessarily circular and that differ from each other. The resonator cavities then result from adjacent rings having different inner contours. These contours can be circles of different diameters, possibly eccentric, triangles, squares, or a circumferential array of radially staggered tubes. A self-cleaning mechanism by injection of liquid may be added to the damper. The cleaning liquid may be recuperated by a gas scrubber provided upstream of the compressor.
IPC 1-7
IPC 8 full level
F04D 29/66 (2006.01); B01D 47/02 (2006.01); F01N 1/00 (2006.01); F01N 1/02 (2006.01); F01N 13/18 (2010.01); F04D 29/70 (2006.01)
CPC (source: EP US)
F04D 29/665 (2013.01 - EP US)
Citation (search report)
See references of WO 2009065904A1
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 MT NL NO PL PT RO SE SI SK TR
Designated extension state (EPC)
AL BA MK RS
DOCDB simple family (publication)
EP 2063130 A1 20090527; EP 2209997 A1 20100728; US 2010278635 A1 20101104; WO 2009065904 A1 20090528
DOCDB simple family (application)
EP 07022502 A 20071120; EP 08851643 A 20081120; EP 2008065934 W 20081120; US 74357808 A 20081120