| 摘要 |
PURPOSE: A dust removing ball of a cleaning apparatus for the inside of a ventilation duct and a cleaning method using the same are provided to remove hardened foreign matters, since projections or hitting pieces are formed at the leading end of multiple fiber brushes of a dust-removal ball. CONSTITUTION: A dust removing ball(320) of a cleaning apparatus for the inside of a ventilation duct cleans the inside duct with being transferred to a ball collector by a ball feeder. The dust-removal ball absorbs dust inside a connection pipe by static electric generated by friction. Synthetic resin fiber bristles(321) are implanted in a fixing sphere(322) of the dust-removal ball. Multiple protrusions(321-1) are attached on the leading end of the fiber brush.
|
