| 摘要 |
PURPOSE: A cleaning device for the inside of a duct is provided to minimize dust generation during cleaning and to easily separate foreign material in a duct. CONSTITUTION: A flexible part is formed at the center of ducts(10,10'). A support rib is projected from an assembling rib(15) which is connected to the flexible part. A pack is inserted into the inner space of the ducts. Insertion holes are formed in both sides of the pack. A binding strap is inserted into the insertion hole and connects the duct with tying up the assembling rib. A wheel is arranged on the body of the pack.
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