Patent ID: 8388714
Filing Date: 2013-03-05
Classification: B01D

Abstract:
1. A furnace bag filter element comprising, a flat rectangular element frame that is open at one end, will fit at an upward angle across a plenum of a furnace return air duct and has aligned opposing open sides that receive ends of flat rectangular bag frames that are open across their centers, and each said bag frame receives a neck of a filter bag fitted and secured thereto; a plurality of filter bags that are each open across their necks and are formed from an air filtration material; said bag frames and bags are fitted into said element frame such that said bag frames are side by side said element frame has a frame end secured across its open end; and said element frame is housed in a furnace return air duct that includes a rectangular opening of a size to allow for passage of said filter element into said duct and said return air duct includes an element support secured to a duct interior wall with one end of said filter element supported onto said element support and the other in engagement with a opposite duct interior wall to provide a slant to said filter element across said rectangular opening at an angle of from thirty five to fifty five degrees.