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(11)

EP 2 783 169 A1

(12)

(43) Date of publication: 01.10.2014 Bulletin 2014/40 (21) Application number: 11876164.2 (22) Date of filing: 21.11.2011

(51) International Patent Classification (IPC):  F24J 3/08(2006.01) F24D 11/02(2006.01) F24H 4/04(2006.01) F24D 15/04(2006.01) F24F 1/66(2011.01) F24F 5/00(2006.01) F25B 30/06(2006.01) (86) International application number: PCT/FI2011/051021 (87) International publication number: WO 2013/076348 (30.05.2013 Gazette 2013/22)

(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: Gebwell Oy 79100 Leppävirta (FI)	(72) Inventor: HULKKONEN, Timo FI-79100 Leppävirta (FI) (74) Representative: Pitkänen, Hannu Alpo Antero  Patenttitoimisto Pitkänen Oy P.O. Box 1188 70211 Kuopio 70211 Kuopio (FI)