Automatic combustion air port cleaner with air/oil indexing mechanism

Abstract

An indexing style Automatic Port Cleaner for cleaning furnace combustion air ports employs multiple cleaning tips and rods enclosed substantially in a furnace windbox. An extension bar enclosed substantially in a furnace windbox to which the cleaning rods are attached with the extension bar carries the cleaning rods and tips in a translating and indexing motion. An extension bar is supported by two fulcrum rods and in turn supported by two fulcrum tubes and two fulcrum housings, the fulcrum housings being supported by a faceplate and fixed relative to the combustion air ports. The fulcrum rods translate relative to the fulcrum tubes while the fulcrum tubes rotate relative to the fulcrum housings. A linear actuator is disposed to create a reciprocating translating motion of the fulcrum rods, extension bar, cleaning rods, and cleaning tips. Indexing creates rotation of the fulcrum tubes, fulcrum rods, extension bar, cleaning rods, and cleaning tips, in a reciprocating fashion about the fulcrum housings.

Dependencies are inferred from the claim text.