(19)

(11)

EP 2 281 167 A1

(12)

(43) Date of publication: 09.02.2011 Bulletin 2011/06 (21) Application number: 09735467.4 (22) Date of filing: 20.04.2009

(51) International Patent Classification (IPC):  F28D 7/12(2006.01) F22D 1/34(2006.01) F22B 31/00(2006.01) F23C 3/00(2006.01) (86) International application number: PCT/SE2009/050405 (87) International publication number: WO 2009/131525 (29.10.2009 Gazette 2009/44)

(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: 23.04.2008 SE 0800924 (71) Applicant: Metso Power AB 402 75 Göteborg (SE)	(72) Inventors: NORDH, Lennart S-413 09 Göteborg (SE) BRINK, Karl-Erik S-431 39 Mölndal (SE) (74) Representative: Andréasson, Ivar  Hynell Patenttjänst AB Patron Carls väg 2 S-683 40 Uddeholm S-683 40 Uddeholm (SE)