| 摘要 |
<P>PROBLEM TO BE SOLVED: To suppress aerodynamic loss to increase recovery efficiency of dust. Ž<P>SOLUTION: The system includes an airborne dust separation section 8 and a dust collecting case 9, wherein the airborne dust separation section has a set or more of inflow inlets 40 and outflow outlets 41 and a dust discharge port 54 that introduces the dust centrifugally separated from air into the dust collecting case, and a channel cross section is smoothly reduced from the outflow outlet to the inflow inlet of the airborne dust separation section, thereby restoring a pressure drop caused by viscous friction accompanying the revolution of the air current and equalizing the revolution speed inside the separation section to increase the recovery efficiency of the dust. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
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