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(11)

EP 2 676 056 A1

(12)

(43) Date of publication: 25.12.2013 Bulletin 2013/52 (21) Application number: 11858670.0 (22) Date of filing: 18.02.2011

(51) International Patent Classification (IPC):  F16K 1/44(2006.01) F16K 3/00(2006.01) F16K 25/00(2006.01) (86) International application number: PCT/CN2011/071108 (87) International publication number: WO 2012/109799 (23.08.2012 Gazette 2012/34)

(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 (71) Applicant: Siemens Aktiengesellschaft 80333 München (DE)	(72) Inventors: HAGMANN, Stefan CH-6344 Meierskappel (CH) ZHANG, Ping Beijing 100068 (CN) YAO, Yu Chao Tianjin, Jinghai County 301608 (CN) ZHAN, Ning Beijing 100043 (CN) WANG, Jian Hui Beijing 100102 (CN)