| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide an air conditioning duct with a water stop device, preventing water from entering a building through an air conditioning duct in a disaster such as tsunami or flood, which prevents water going over the water stop device into a downstream side in a period in which the water stop device is activated in a water disaster and then fully closes the duct, from going out to an air-conditioned room.SOLUTION: A water receiving tank 31 is provided on a bottom face of a duct 30 downstream of the installation position of a water stop device 1 and upstream of an air outlet 52 so that water in the duct 30 drops into the water receiving tank 31. In an inflow port of the water receiving tank, either one of a perforated panel 32, a reverse flow prevention damper 33, or a louver 34 is preferably provided to prevent a flow of circulation air from being disturbed due to a space of the water receiving tank 31.</p> |
