| 摘要 |
PROBLEM TO BE SOLVED: To provide a vacuum cleaner which suppresses turbulence of dust-containing air inside an inner cylinder and prevents dust from getting easily accumulated at a bottom surface part of the inner cylinder.SOLUTION: A dust collecting device 27 includes a first centrifugal separation part 90 which has a case part 85 and an inner cylinder 91 positioned at a center part of the case part 85, and separates dust in dust-containing air by rotating the dust-containing air inside the case part 85 around the inner cylinder 91. The dust collecting device 27 includes a second centrifugal separation part 93 which is communicated with the first centrifugal separation part, and separates dust smaller than the dust separated in the first centrifugal separation part 90, in the dust-containing air which has passed through the first centrifugal separation part 90. The inner cylinder 91 has a cylindrical exhaust cylinder part 108 having an opening 111 where the dust-containing air passes through on the periphery. The inner cylinder 91 has a separation filter 112 which covers the opening 111. The inner cylinder 91 includes a bottom surface part 113 which closes an end part of the exhaust cylinder part 108, and is an inclined surface inclined toward a downstream side from the peripheral side to a center side. |
