(19)
(11) EP 1 462 721 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
29.07.2009 Bulletin 2009/31

(43) Date of publication A2:
29.09.2004 Bulletin 2004/40

(21) Application number: 04101049.7

(22) Date of filing: 15.03.2004
(51) International Patent Classification (IPC): 
F23K 3/00(2006.01)
 F23B 1/38(0000.00)
(84) Designated Contracting States:
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PL PT RO SE SI SK TR
Designated Extension States:
AL LT LV MK

(30) Priority: 25.03.2003 SE 0300806

(71) Applicant: Swedish Bioburner System Aktiebolag
662 24 Amal (SE)

(72) Inventor:
  • INGVARSSON, Robert
    662 91, AMAL (SE)

(74) Representative: Johansson, Lars-Erik et al
Hynell Patenttjänst AB Patron Carls väg 2
683 40 Uddeholm
683 40 Uddeholm (SE)

   


(54) Granulated fuel feeding device and boiler comprising said device


(57) The invention relates to a feeding device (1) for transportation of a solid fuel, such as pellets, wood chips or some other granular material, to an combustion device (2) in which combustion of the transported material takes place. The feeding device (1) comprises a first feed tube (3) that is disposed to be operatively connected to a distribution device (5) for transportation of said solid fuel from a fuel supply (6) to the feeding device (1) and is disposed to be operatively connected to said combustion device (2), via an outlet end of the feed tube (3). The feeding device (1) furthermore comprises a feed spiral (8), arranged to rotate at least partly inside the first feed tube (3) to transport the solid fuel to the combustion device (2), and which is arranged about an ignition device (9) by aid of which the solid fuel can be ignited. The invention also relates to a system for a solid fuel fired boiler comprising said feeding device (1) and a combustion device (2).













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