| 摘要 |
A gas fired space heater is described having a central combustion chamber containing a radiant burner. Combustion products pass upwardly from the combustion chamber to a concentric exhaust conduit within which they divide and pass through semi-cylindrical halves to a lower exhaust port to the exterior of the heater. Recirculation air from a space to be heated is drawn into the front of the heater through a fan at the back thereof. The recirculation air on the suction side of the fan passes through a recirculation conduit concentric with the exhaust conduit for preheating the air. On the pressure side of the fan the air passes through a heated air conduit concentric with and between the combustion chamber and the exhaust conduit for further heating before being discharged back into the space heated. An unusually short radiant burner is provided in the combustion chamber by arranging a concave deflector in front of a fuel gas orifice.
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