Fireplace heat exchanger

Claim 1

A heat exchanger for installation in a fireplace comprising: a left U-shaped side section and a right U-shaped side section each having a lower duct, a riser duct and an upper duct, the lower duct and the upper duct of each respective U-shaped side section being substantially parallel with one another and both lower ducts and both upper ducts having an outer end and an inner end, each outer end being open, each riser duct being inclined generally upwardedly, and being connected at its upper end to the inner end of its respective upper duct and at its lower end to the inner end of its respective lower duct, said left and right U-shaped sections being spaced apart to permit a source of heat to be placed between the two U-shaped side sections; a rear horizontal duct connected at one end to the upper duct of the left U-shaped side section adjacent the inner end of the upper duct and at the other end to the upper duct of the right U-shaped side section adjacent to the inner end of the upper duct; a forward horizontal duct located adjacent the rear horizontal duct toward the open ends of said upper duct and lower duct and being connected at one end to the upper duct of the left U-shaped side section and at the other end to the upper duct of the right U-shaped side section; and baffle means for deflecting air from the left U-shaped side section and the right U-shaped side section into the rear horizontal duct and the forward horizontal duct.