| 摘要 |
<p>PURPOSE:To surely recover small sparks, by arranging a wind path above a dust box and arranging it to be gradually higher toward a discharging port. CONSTITUTION:A spark recovering apparatus consists of an outer frame 9, a suction port 10, a discharging port 11, the 1st and 2nd partition plates 12 and 13, and a dust box 14. The 1st wind path 15 provided to the 1st partition plate 12 is positioned in a place higher than the upper surface 14a of the dust box 14 by a prescribed height dimension H1. The height position of the 2nd wind path 16 is made higher than the position of the 1st path 15 by a dimension H2. The cross sectional area of the 3rd partitioned chamber is made larger than that of the 2nd chamber, and further, the cross sectional area of the 2nd partitioned part is made larger than that of the 1st chamber, in the 1st-3rd partition chambers 17-19 partitioned by the frame 19 and the 1st and 2nd partition plates 12 and 13.</p> |
