| 摘要 |
A regenerative filter comprises a length of filter material, a first perforated filter support 435, a second perforated filter support 436, a filter regenerator 464 and an intermediate duct 448. A first end of the filter material being wound around the first perforated filter support 435 to form a first scroll type filter 433 through which air to be filtered can pass, a second end of the filter material being wound around the second perforated filter support 436 to form a second scroll type filter 434 through which air to be filtered can pass. The regenerative filter being arranged such that the filter material is movable in both directions between the first and second perforated filter supports 435, 436, by passing a single layer of filter material through the filter regenerator 464 as it moves between them. The intermediate duct 448 being arranged to take airflow which has passed through the first scroll type filter 433 to the second scroll type filter 434 for filtration, during use of the regenerative filter. |
