Importance

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Abstract

A burner for placement in an airstream that flows in a downstream direction comprising a gas pipe having fuel ports for admitting fuel gas into the airstream, a flame retainer for preventing a flame originating at the manifold from lifting off the fuel ports and moving down the airstream, and a flame shield extending from opposite sides of the gas pipe and away from the gas jet for shielding the flame base from the airstream. The flame shield has a baffle assembly disposed on opposite sides of the gas pipe for forming an air passage for directing a portion of the airstream to flow along the downstream surfaces of the flame shield and flame retainer. In one embodiment of the burner, the baffle assembly directs a first portion of the airstream to flow along the downstream surface of the flame shield toward the flame retainer and directs a second portion of the airstream to flow along the downstream surface of the flame shield and away from the flame retainer. Each baffle assembly includes a splitter for bisecting an upstream flow of air and for directing the bisected air flows to flow adjacent the air flowing along the downstream surfaces of the flame shield and flame retainer, respectively, for promoting the formation of two counter-rotating eddies on each side of the gas pipe. In another embodiment of the burner the baffle assembly is disposed on the ends of the flame shield for directing a portion of the airstream to flow along the downstream surfaces of the flame shield and toward the flame retainer for promoting the formation of an eddy on each side of the gas pipe which flows in a direction opposite from naturally formed eddies.

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First Claim