PURPOSE: To make possible the utilization of a blower of an ordinary type and contrive the miniaturization and low noise thereof by guiding hot air from a heating source into each room, each corridor and the like of the inside of a house by natural convection and allowing return air to flow on the way of a circulation passage to the heating source.
CONSTITUTION: Hot wind heated by a heating source 1 of a radiation type FF stove and the like is circulated in the inside of a house by natural convection as it is. Return air is guided from a return intake 2 provided in the ceiling and the second floor to the ceiling space 3, sucked in a blower 4, and blowed off from an outlet 6 in the ceiling face of rooms in which the heating source 1 is set by a supply air duct 5. As described above, the blower 4 and the supply air duct 5 are provided on the way of a circulation passage of the return air, which is not guided to the heating source 1 directly. In addition, hot wind from the heating source 1 is not supplied in each room. Furthermore, a flow of the return air is formed by setting the blower 4 in the ceiling space as a duct space and hot wind circulation of the whole inside of a house can be performed smoothly.
HATA GIICHI
AWAJI YASUYUKI
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