(19)
(11) EP 2 209 997 A1

(12)

(43) Date of publication:
28.07.2010 Bulletin 2010/30

(21) Application number: 08851643.0

(22) Date of filing: 20.11.2008
(51) International Patent Classification (IPC): 
F04D 29/66(2006.01)
F01N 1/02(2006.01)
F04D 29/70(2006.01)
 F01N 1/00(2006.01)
F01N 7/18(0000.00)
B01D 47/02(2006.01)
(86) International application number:
PCT/EP2008/065934
(87) International publication number:
WO 2009/065904 (28.05.2009 Gazette 2009/22)
(84) Designated Contracting States:
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 States:
AL BA MK RS

(30) Priority: 20.11.2007 EP 07022502

(71) Applicant: Siemens Aktiengesellschaft
80333 München (DE)

(72) Inventor:
  • SCHOEMAN, Chiel
    NL-7443LE (NL)

   


(54) NOISE ATTENUATION DEVICE FOR A CENTRIFUGAL COMPRESSOR DISCHARGE OR SUCTION NOZZLE