Smoke and air cleaner assembly

Claim 1

A smoke and air cleaner assembly comprising in combination a stack enclosure, a plurality of spaced apart cleaner stages in said stack enclosure, at least one section of said stack enclosure between adjacent cleaner stages is vertically corrugated internally, a plurality of extraction fan assemblies one for each of said stages, a common centrally located vertically situated fan shaft journalled within said enclosure, said fan assemblies being mounted on said shaft, and a source of power operatively connected to said shaft, a selectively operated water spray unit discharging water upwardly in a direction parallel to the vertical axis of at least one of said assemblies and onto the upstream side of said fan assembly for mixing of smoke and water by said fan assembly, and a water drain shroud surrounding said one fan assembly and spanning said stack enclosure, to collect said smoke and water mixture, said drain shroud being substantially dome shaped, a gutter around the periphery thereof against said stack enclosure, one side of said gutter being higher than the other whereby said gutter drains to one common locus, and a discharge extending between said locus and a point externally of said stack enclosure, said stack enclosure including a plurality of flue pipes discharging into the base of said stack enclosure and an air drier assembly at the base of said stack enclosure adapted to move air around said flues and a steam coil within the flue pipe area and operatively associated with said water spray unit to discharge steam onto said one fan assembly, a hood across the upper end of said stack enclosure, said upper end communicating, below said hood, with the intake side of said drier assembly, and a discharge conduit extending from the discharge side of said drier assembly to said upper end of said stack enclosure above said hood, and a plurality of deflectors extending from said hood into said enclosure to trap and direct water droplets from the gases passing thereby.