| 摘要 |
PROBLEM TO BE SOLVED: To reduce costs, and to simplify execution by connecting a hot-air outlet to a hot-air generation device by a hot-air supply duct. SOLUTION: A hot-air outlet 3 is provided on a wall 12, a louver 14 is provided in the hot-air outlet 3, and a hot-air supply duct 4 is connected to the hot-air outlet 3. The hot-air outlet 3 is also provided on a ceiling. A hot-air generation device 2 burns gas as fuel, and generates the hot air. When the hot air is to be generated by burning the gas, the hot air of the combustion of the gas is designed to be sent as the hot air. In this case, the combustion is made by a burner 15, exhaust to the outside is made via a heat exchanger 16, and outdoor air is sucked through a path being different from the combustion by driving a fan 17. The outdoor air is subjected to heat exchange by the heat exchanger 16 for generating the hot air, and the hot air is supplied to the hot-air supply duct 4, thus supplying clean hot air that does no contain the combustion gas. |
