(19)
(11) EP 1 589 285 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
10.01.2007 Bulletin 2007/02

(43) Date of publication A2:
26.10.2005 Bulletin 2005/43

(21) Application number: 05075648.5

(22) Date of filing: 17.03.2005
(51) International Patent Classification (IPC): 
F23N 5/24(2006.01)
F16K 3/02(2006.01)
 F23L 13/06(2006.01)
(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 MC NL PL PT RO SE SI SK TR
Designated Extension States:
AL BA HR LV MK YU

(30) Priority: 18.03.2004 IT PN20040019

(71) Applicant: MCZ S.P.A.
33070 Vigonovo Di Fontanafredda (IT)

(72) Inventor:
  • Zanette, Giacomo, MCZ S.p.A.
    33070 Vigonovo di Fontanafredda (PN) (IT)

(74) Representative: Da Riva, Ermanno 
B.D.R. AGENZIA BREVETTI "PORDENONE" Viale G. Marconi 4/11
33170 Pordenone
33170 Pordenone (IT)

   


(54) Device for the cut-off of combustion air in pellet stoves


(57) Automatic device for the cut-off of combustion air in pellet stoves which can be inserted in the duct (5) for the supply of the combustion air, to prevent the backflow of hazardous gases into the room. This device (D) is composed of a parallelepiped box-shaped body (10) whose main sides (11a-11b) are connected to suitable openings and respective sections (51-52) of the supply duct (5). A plate (13) which is connected to a relative electromagnet (15) slides through a slot (121) on a lateral side (12a) of the box-shaped body (10). When the electromagnet is not energized, it releases the plate so that a spring (16) pushes it into the body of the box-shaped body (10) until it impacts the opposing perimeter side (12b) where it sill be positioned in a manner that prevents the passage of air or smoke. When instead the electromagnet (15) is energized, it extracts the plate (131) from the box-shaped body (10) so that inside it (10) there will be an opening that allows passage of combustion air.







Search report