HEATER FOR SAUNA

PURPOSE:To efficiently heat a sauna room by reducing the occupying space in the sauna room, by a method wherein combustion is completed in a combustion chamber and the formed high temp. exhaust gas is guided to a heat transfer pipe while air is added to said gas and at least the outer peripheral surface of the heat transfer pipe is constituted of a substance emitting far infrared rays by heating. CONSTITUTION:Each of heat transfer pipes 13, 16 are constituted by coating the outer peripheral surface of a real cylindrical pipe body with a substance emitting far infrared rays by heating, for example, ceramics or the like. Gaseous fuel and combustion air are mixed in a combustion chamber 8 to complete combustion and high temp. exhaust gas flows in the heat transfer pipe 13. Air is supplied to the exhaust gas from the outside of a sauna room 6 through gaps (d) and the exhaust gas flows in the heat transfer pipe 16 through an exhaust chamber 14. Since air is supplied to the high temp. exhaust gas, the transfer pipes 13, 15 are prevented from being heated to high temp. and far infrared rays are efficiently emitted into the sauna room 6. Since no combustion is performed in the heat transfer pipes 13, 16, the heat transfer pipes can be formed into a free shape and, since combustion air is supplied by a push-in fan 20, the high load combustion of a burner 11 can be performed and the combustion chamber 8 can be reduced.