PURPOSE: To eliminate the need of using a household electric power, by constituting a wick elevating type kerosene combustion device equipped with a hot air blowoff unit such that the heating section of hot gas reciprocating engine is provided at the upper part of combustion cylinder and the output power shaft of reciprocating engine may be utilized in driving a convection fan provided in the hot air blow-out unit.

CONSTITUTION: Upon a wick being ignited, a heat dissipating net 33 becomes red-hotted and a radiation heating is carried out by means of reflectors 8 and 9, while a starting motor 35 is simultaneously caused to rotate a convection fan 19 for thereby effecting a hot air heating operation. At the same time, the heating section 23 of reciprocating engine 21 is heated up by the heat radiated from a combustion cylinder, which leads to a temperature difference between the heating section 23 and a cooling section 22, as the latter is cooled down by the water supplied from inside a storage tank 43. The temperature difference causes an operating gas to repeat its closed cycle of isothermal compression, isovolumetric heating, isothermal expansion and isovolumetric cooling inside the engine 21, and consequently output shafts 26 and 27 of engine are caused to rotate for turning the convection fan 19. At this moment, a power switch 18 is turned OFF for allowing the engine 21 to drive the fan 19. In this manner, a power consumption in a household can be reduced.