| 摘要 |
<p>FIREPLACE HEATING UNIT A fireplace heating unit is disclosed for efficiently heating a room. The unit has inlet and outlet chambers for heating cool air disposed adjacent an inside housing. The inside housing is comprised of a firebox for containing a fire and a hood-vent means above the firebox for collecting combustion gases from the fire. Conduits extend through the hood-vent means for further heating a portion of air passing from the inlet chamber to the outlet chamber. A one-way controllable bypass means is provided for directing a controllable amount of hot air from the outlet chamber into the hood-vent means without diverting combustion gases therein into the outlet chamber.</p> |
