(19)

(11)

EP 2 232 078 A1

(12)

(43) Date of publication: 29.09.2010 Bulletin 2010/39 (21) Application number: 09704780.7 (22) Date of filing: 14.01.2009

(51) International Patent Classification (IPC):  F04D 27/02(2006.01) F04D 29/66(2006.01) F04D 29/46(2006.01) (86) International application number: PCT/EP2009/050368 (87) International publication number: WO 2009/092655 (30.07.2009 Gazette 2009/31)

(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 MK MT NL NO PL PT RO SE SI SK TR Designated Extension States: AL BA RS (30) Priority: 25.01.2008 EP 08001433 (71) Applicant: Siemens Aktiengesellschaft 80333 München (DE)	(72) Inventor: NILSSON, Ulf Whetstone Leicester LE8 6HN (GB)