Hood for fireplace

F - Mech Eng,Light,Heat,Weapons – 24 – B

Patent

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Details

F24B 1/18 (2006.01)

Patent

CA 2082791

A fireplace has a manifold positioned between a combustion chamber and a flue. The manifold has a pair of inlets to supply dilution air to the flue, one extending from a front face of the fireplace, and the other from a rearward location. A baffle extends across the outlet of the manifold to prevent direct communication between the combustion chamber and flue. The inlet at the front face enables the flow of dilution air to be checked with the fireplace installed without having to accomodate the full flow of dilution air. The baffle prevents downdrafts from adversely affecting the combustion in the combustion chamber.

La présente invention a pour objet un foyer doté d'un collecteur positionné entre la chambre de combustion et le conduit de cheminée. Le collecteur en question comporte une paire d'orifices d'admission assurant la distribution de l'air de dilution vers le conduit de cheminée, l'un des orifices d'admission se trouvant l'avant du foyer, l'autre orifice se trouvant à l'arrière. Une chicane est disposée en travers du côté sortie de l'orifice d'admission, entre la chambre de combustion et le conduit de cheminée. L'orifice d'admission, situé à l'avant du foyer, impose une certaine contrainte au libre écoulement de l'air de dilution et interdit le plein débit d'air de dilution. La chicane en question empêche le courant descendant d'exercer quelque incidence négative sur le phénomène de combustion à l'intérieur de la chambre de combustion.

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