| 摘要 |
PURPOSE:To attain to enhance dust collection efficiency and to reduce loss of pressure, by providing an opening part to the conical part of a cyclone at a predetermined position. CONSTITUTION:A first opening part 6 for discharging collected dust is provided along a first imaginary circle 3a formed by imaginarily suspending a first circle to contact the same with the inner surface of a conical part 2. Collected dust falling along the inner wall of the conical part 2 is discharged to the outside of the conical part 2 from the opening part 6 provided to the conical part 2 by the action of centrifugal force. Further, a second conical part 8 is provided and the hopper of collected dust taken out from the opening part 6 is constituted by the second conical part 8 covering the opening part 6. The conical part 8 is provided to a region along an immaginary circle 3a where a large amount of collected dust is accumulated from the other part on the inner wall surface of the conical part 8. The collected dust is recovered from the conical part 8 and a collected dust outlet pipe 11.
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