Patent ID: 6503141
Filing Date: 2003-01-07
Classification: F24F,Y02B

Abstract:
A carbon monoxide ventilation system, for use in an interior area and ventilating to an exterior area of a building, exhaust system specifically to protect against malfunction of a home or commercial heating systems comprising in combination:a building having a wall having an interior mounting surface and an exterior surface adjacent to ambient outside air; a furnace in said building, said furnace capable of producing carbon monoxide gas; a vent in communication with said exterior surface of said building wall; a fan unit located in the interior area of said furnace, said fan unit connected to said vent, said fan unit having a motor and a propeller for drawing gaseous air from said interior and expelling said gaseous air to the exterior ambient environment through said vent; said fan unit having filter capturing particles from detrimentally engaging said propeller; a sensor mounted in a sensor housing, said sensor detecting the presence of carbon monoxide and supplying power to said fan once a threshold level has been reached; said sensor housing having an alarm indicating device that is activated once the threshold level has been reached, said sensor communicating with a reset button outside of said furnace, said alarm indicating device remaining activated until reset by said reset button; said exhaust fan and said sensor and alarm indicating device being coupled to an outlet flexible conduit conveying carbon monoxide contaminated air to the outdoors; wherein said exhaust fan and said sensor housing are located within said furnace, said sensor housing capturing return air entering said furnace by a return inlet in an exterior wall of said furnace; said sensor further sensing the presence of carbon monoxide mixing with said return air prior to said air being blown from said furnace through a hot air supply duct of said furnace; wherein said hot air supply duct normally communicates with air supply vents in said building; and, wherein said ventilating system interrupts a flow of said air contaminated with carbon monoxide by venting said contaminated air from an exit plenum to the outdoor ambient air environment.