Patent ID: 9120042
Filing Date: 2015-09-01
Classification: B01D

Abstract:
1. A device for removing oil mist and odors from an airstream, comprising: a base having an air inlet in the lower end thereof for receiving an airstream and a channel formed around said air inlet opening; a first tubular filter having a first end and a second end, said first end mounted on said base wherein said first tubular filter defines an inner chamber that is in communication with said air inlet and wherein said first filter is dimensioned to filter oil from said airstream; a second tubular filter having a first end and a second end, said first end mounted on said base, said second tubular filter surrounding said first tubular filter and defining an outer chamber therebetween that communicates with said channel in said base, said second tubular filter being disposed downstream of said first tubular filter; an opening through said base, said opening connecting said outer chamber with said air inlet; a valve element disposed in said opening of said base, said valve element allowing flow from said outer chamber, through said opening and to said air inlet when pressure in said outer chamber exceeds pressure in said air inlet; a cap secured on said second end of said first tubular filter to close said second end; and a cover secured on said second end of said second tubular filter to close said second end; at least two rods each extending through said outer chamber, each of said at least two rods having a first end secured to said base and a second end; and a plurality of fastening elements disposed on each of said at least two rods near second end thereof for clamping said first tubular filter between said base and said cap and for clamping said second tubular filter between said base and said cover.