| 摘要 |
A vacuum cleaner comprises a travelling head 12 adapted to be moved across a surface to be cleaned. The travelling head 12 includes an opening 26 in its bottom surface, a motor 34, an impeller 46, a rotatable brush 24, a dirt-collection chamber (42, fig 6), a filter means (52, fig 6) located between the dirt-collection chamber (42, fig 6) and the impeller 46 and an air-flow duct (40, fig 6) that is tangential to the rotatable brush 24 and spans substantially the full width of the travelling head 12. A ramp 38 is positioned adjacent to the brush 24, with the ramp defining the bottom of the air-flow duct (40, fig 6), with the top of the air-flow duct being defined by a wall (58, fig 6) that projects into the dirt-collection chamber (42, fig 6). The filter means (52, fig 6) is preferably positioned above the dirt-collection chamber and the wall (58, fig 6). The motor 34 may be located in a tunnel that separates the dirt-collection chamber (42, fig 6) into two separate parts and the vacuum cleaner is preferably battery operated. |
