| 摘要 |
<p>PURPOSE:To reduce running cost and automate ventilation by providing a hot air fan for delivering hot air through a hot air blow-off port and a ventilation fan driven at every predetermined time or continuously. CONSTITUTION:When a burner 2 is ignited, a combustion gas generated is sucked up into a hot air fan via a combustion chamber 3. On the other hand, air in the outside of a box body 1 is sucked up through an air feed port 8, and air and the combustion gas are mixed and formed into hot air and sent out to the outside of the box body through a hot air blow-off port 7. Further, a ventilation fan 10 rotates when the combustion time of the hot air apace heater reaches a predetermined time, and sucks up air contaminated by the combustion exhaust gas at the outside of the box body 1 through a ventilation suck-up port 11. Thus, the contaminated air being discharged out of the house through an opening part 13 provided on the wall from the ventilation flow-off port 12. Accordingly, the ventilation is automatically carried out at every predetermined time, and energy loss can be suppressed to the minimum.</p> |
