Fireplace ventilation system

Details Fireplace ventilation system Fireplace ventilation system

F - Mech Eng,Light,Heat,Weapons

24

B

F24B 1/189 (2006.01) F23L 17/00 (2006.01) F24B 1/187 (2006.01)

Patent

CA 2143796

Apparatus for ventilating a fireplace having a combustion chamber within the interior of a building comprising an enclosure defining an air volume and a fan unit for generating a constant negative pressure region within the enclosure. A venting passage communicates the enclosure with the combustion chamber of the fireplace such that the negative pressure within the enclosure draws combustion gases from the combustion chamber into the enclosure to ventilate the fireplace. A valve is provided in the venting passage to control the flow of combustion gases to the enclosure. With this arrangement, the fan unit is operated at a constant speed to generate a constant negative pressure within the enclosure. There is no need to install an expensive variable speed fan to provide different levels of ventilation and, as long as the fan installed is sufficiently powerful to ventilate the enclosure, the valve can be used to adjust the ventilation of the fireplace combustion chamber via the enclosure.

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