| 摘要 |
A surface treating appliance comprises a regenerative filter (416, fig 29) and a filter regenerator 463. The regenerative filter (416, fig 29) comprises a length of filter material 432 rolled into a first scroll type filter 433 through which air to be filtered can pass and a second scroll type filter 434 through which air to be filtered can pass. The regenerative filter (416, fig 29) is arranged such that the filter material 432 is movable in both directions between the first and second scroll type filters 433, 434 with the filter material 432 passing through the filter regenerator 463 as it moves between the first and second scroll type filters 433, 434 during use. The separating apparatus further comprises at least one drive means 458, 459 which moves the filter material 432 between the first and second scrolls 433, 434 continuously during use of the surface treating appliance such that the filter material 432 is constantly getting regenerated as it passes through the filter regenerator 463. The filter regenerator 463 preferably includes a pair of opposed brushes 464 and the surface treating appliance may by a robotic vacuum cleaner. |
