| 摘要 |
PURPOSE: A duct with a tunnel for cleaning is provided to maintain fresh indoor air by regularly cleaning dusts inside the duct. CONSTITUTION: A duct with a tunnel for cleaning includes a ventilation unit, a plurality of tunnels, a coupler(20), a plurality of sockets(21), and an inlet(22). The indoor air and outdoor air are inputted or outputted through the ventilation unit. Compressed air is supplied through the plurality of tunnels. A plurality of tunnels are formed on the upper side of the ventilation unit. The coupler connects the ducts. A plurality of sockets are formed in the coupler. The plurality of sockets connects the plurality of tunnels formed on the duct. The inlet is formed on the lower side of the socket. The compressed air is inputted to the ventilation unit through the inlet.
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