| 摘要 |
PURPOSE:To prevent snow entering into the air conditioner through an air intake port from adhering to the surface of a filter by installing an outside louver and an inside lowver in the air intake port, and providing hot air flow supply mechanisms which supply hot air to the indoor side and outdoor side of the inside louver and melt snow. CONSTITUTION:At an external air intake port 1a are installed an outside louver 2a the vane of which is directed perpendicularly downward and an inside louver 2b the vane of which forms a downward gradient toward the indoor side. Snow 35a makes collision with the outside louver 2a and is prevented from entering into an aeration treatment device 3. However, the moving direction of anow is changed downward and the snow does not reach a bag type filter 4. A part of external air is heated with a heating coil 25, and then is discharged to the indoor side and the outdoor of the inside louver 2b as hot water air flows 28a and 28b from the hot air blow-of port 27. By these procedures, the entering snow 35b is molten and removed, and snow adhering to the inside louver 2b is also molten into water, which is caught in a trough 20 and drained to a drain pit 32.
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