| 摘要 |
<p>The present invention relates to a drain device of a dust collecting duct, comprising: a first chamber for accommodating water sealing water introduced from a water seal duct; a second chamber for accommodating the water sealing water overflowed from the first chamber; a water level measuring unit for measuring a water level of the second chamber; a ventilating unit for ventilating a dust collecting duct; and a control unit for controlling the ventilating unit when the water level of the second chamber reaches a critical upper limit, and ventilating the dust collecting duct. Thus, the device has an effect of draining the water sealing water introduced into the dust collecting duct.</p> |
