Patent ID: 7588611

Claim:
A spark suppressor for suppressing sparks moving through a duct having walls defining a passageway, said spark suppressor comprising: a plurality of stationary vanes extending away from a center area of said passageway, said plurality of vanes having at least one vane that extends to contact said duct, said vanes each having a downstream curvature causing air flowing therethrough to be intermixed, and wherein each vane has a leading edge and a trailing edge, said leading edge of at least one vane overlapping a trailing edge of an adjacent vane when viewing said suppressor from a longitudinal direction; and a filtration system including a filter housing, a plurality of filtration elements removably mounted in said filter housing, an inlet duct connected to said filter housing for conveying particulate to be filtered, an outlet duct connected to said filter housing for conveying filtered air away from said filter housing, and means communicating with said filter housing for providing a flow of air through said filtration elements; and wherein said spark suppressor is mounted in line with said inlet duct.