(19)

(11)

EP 2 536 977 A2

(12)

(43) Date of publication: 26.12.2012 Bulletin 2012/52 (21) Application number: 11709317.9 (22) Date of filing: 16.02.2011

(51) International Patent Classification (IPC):  F23D 14/18(2006.01) (86) International application number: PCT/DK2011/000008 (87) International publication number: WO 2011/100970 (25.08.2011 Gazette 2011/34)

(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 (30) Priority: 16.02.2010 DK 201000130 (71) Applicant: Netek Ir System A/S 9500 Hobro (DK)	(72) Inventors: RASMUSSEN, Knud, Jørgen DK-9620 Ålestrup (DK) RASMUSSEN, Knut, Thorbjørn Næss DK-6950 Ringkøbing (DK) (74) Representative: Olesen, Kaj et al Patentgruppen A/S Arosgaarden Aaboulevarden 31 8000 Aarhus C 8000 Aarhus C (DK)