| 摘要 |
PROBLEM TO BE SOLVED: To provide a vacuum cleaner capable of improving efficiency by making the air flow in the dust collection space smooth. SOLUTION: A second cylindrical body 23 with an opening 25 on the lower surface is formed downward from above in the vertical direction at the center of the dust collection space 10, and an exhaust pipe 40 is extended inside the second cylindrical body 23 from the lower opening 25 of the second cylindrical body 23 upward from the bottom of the dust collection space 10. The exhaust pipe 40 is extended to a position higher than at least the lower opening 25 of the second cylindrical body 23. COPYRIGHT: (C)2005,JPO&NCIPI
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