(19)

(11)

EP 2 641 035 A1

(12)

(43) Date of publication: 25.09.2013 Bulletin 2013/39 (21) Application number: 12702541.9 (22) Date of filing: 06.02.2012

(51) International Patent Classification (IPC):  F25B 21/02(2006.01) (86) International application number: PCT/EP2012/051938 (87) International publication number: WO 2013/117212 (15.08.2013 Gazette 2013/33)

(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: Huawei Technologies Co., Ltd. Shenzhen, Guangdong 518129 (CN)	(72) Inventors: SHI, Jian 16440 Kista (SE) TSOI, Vadim 16440 Kista (SE) (74) Representative: Kreuz, Georg Maria et al Huawei Technologies Dessauerstrasse 3 80992 Munich 80992 Munich (DE)