(19)

(11)

EP 1 938 021 A1

(12)

(43) Date of publication: 02.07.2008 Bulletin 2008/27 (21) Application number: 05793392.1 (22) Date of filing: 31.08.2005

(51) International Patent Classification (IPC):  F25B 1/00(2006.01) F25D 17/00(2006.01) F25B 49/00(2006.01) (86) International application number: PCT/US2005/030881 (87) International publication number: WO 2007/027173 (08.03.2007 Gazette 2007/10)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR (71) Applicant: Carrier Corporation Farmington, CT 06034-4015 (US)	(72) Inventors: CHEN, Yu East Hartford, CT 06118 (US) ZHANG, Lili East Hartford, CT 06118 (US) (74) Representative: Leckey, David Herbert  Frank B. Dehn & Co. St Bride's House 10 Salisbury Square London EC4Y 8JD London EC4Y 8JD (GB)