(19)

(11)

EP 2 825 823 A1

(12)

(43) Date of publication: 21.01.2015 Bulletin 2015/04 (21) Application number: 12798270.0 (22) Date of filing: 05.12.2012

(51) International Patent Classification (IPC):  F23C 7/00(2006.01) F23R 3/28(2006.01) F23R 3/14(2006.01) (86) International application number: PCT/EP2012/074412 (87) International publication number: WO 2013/135324 (19.09.2013 Gazette 2013/38)

(84) Designated Contracting States: 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 States: BA ME (30) Priority: 13.03.2012 EP 12159203 (71) Applicant: Siemens Aktiengesellschaft 80333 München (DE)	(72) Inventor: SADASIVUNI, Suresh Lincoln Lincolnshire LN5 7RH (GB) (74) Representative: Maier, Daniel Oliver  Siemens AG Postfach 22 16 34 80506 München 80506 München (DE)