| 摘要 |
The air heating system for dwellings has a vertical cylindrical housing with hot water reservoir, inlet, outlet, burner and ventilator. The ratio of the O.D. to the length of hot water reservoir is pref. The cylindrical vertical housing (1) is constructed of thin sheet metal cylinders with e.g. glass-wool insulation between. The housing has a lid (2) and annular cylindrical hot water reservoir (3). Inside the cylinder (4) is a duct for exhaust gas discharge. A gas burner (7) is fitted near the bottom of the reservoir which also has a cold water inlet (11) and outlet (12) for hot water. Air circulates by incorporating ventilator (15) and dust-filter (16).
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