| 摘要 |
PROBLEM TO BE SOLVED: To provide an oil fired hot-water boiler the manufacturing cost of which is reduced by reducing the number of parts constituting a supplying section which supplies combustion air to a combustion chamber and which can eliminate the burning of a heat exchanger by reducing the lengths of burning flames and improve the efficiency of the heat exchanger. SOLUTION: An oil fired hot-water boiler is provided with a cylindrical vaporizer which supplies primary combustion air from the bottom side, and is provided with a heater that vaporizes liquid fuel diffused from a rotary cup at the center when the fuel adheres to the heater and a combustion chamber 34 partitioned by a flame holding body 30 above the vaporizer, so that secondary combustion air may be supplied to the chamber 34 from the outer peripheral direction through a secondary combustion air passage provided on the outer periphery of the vaporizer. In the boiler, an outwardly expanded tapered section 35 is provided above the flame holding body 30 of the vaporizer and a plurality of air supply holes 36 is formed in the tapered section 35.
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