| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a duct interior cleaning device of a simple structure, which can eliminate dust sticking firmly to the inner surface of a dust in cleaning work and does not make a room dirty with the dust in the duct. <P>SOLUTION: The duct interior cleaning device 10 comprises an air jetting means 13, which is inserted into the duct 30A movably and jets compressed air toward the inner wall of the duct 30, and a compressed air generating means 11, which supplies the compressed air to the air jetting means 13 via a flexible hose 12. The cleaning device 10 also includes an air suction means 20, which sucks air out of the duct 30A at a spot other than the spot where the air jetting means 13 is inserted and is provided with a filter 21 capable of eliminating dust. The air suction means 20 sucks more air than that the air jetting means 13 jets out. <P>COPYRIGHT: (C)2005,JPO&NCIPI |
