| 摘要 |
An appliance comprises a regenerative filter for filtering a fluid flow, having at least one filter (90. Fig 6), a filter regenerator 100 for regenerating the regenerative filter, a turbine 112 for driving the filter regenerator 100, the turbine 112 being driven by the fluid flow passing through the appliance during its use. The turbine 112 is preferably connected to the filter regenerator 100 via one or more gears 104 and may be located downstream of the regenerative filter. The turbine 112 is preferably connected to the filter regenerator via a drive shaft 100 with the at least one filter (90, fig 6) of the regenerative filter comprising a plurality of layers of filter material, the filter (90, fig 6) having a first filtering configuration where the plurality of layers are held together and the air to be cleaned passes through the plurality of layers of filter media and a second regeneration configuration where at least a portion of one of the plurality of layers of filter material is spaced from the remainder of the layers of filter material for regeneration. The at least one filter (90, fig 6) may be moveable between a filtration zone and a regeneration zone and the dirt is preferably knocked or shaken from the filter. |
