| 摘要 |
<p>The invention relates to a rotary air filter for use in combination with a cooling radiator or another cooling device and which has to operate in a dusty atmosphere. The rotary air filter comprises a hollow rotary structure having a perforated rotary filter element mounted on the intake side of a fan operable to draw air through the filter element, the rotary structure having a generally unobstructed inner surface lengthwise thereof, and a discharge opening being provided adjacent the fan and generally in line with said unobstructed inner surface for enabling the discharge therethrough of foreign material entered through the perforations in the rotary filter element.</p> |
