Importance

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Abstract

Fluid-cooled impingement burners have an external conduit and a first internal conduit substantially concentric therewith forming a first annulus for passing a cooling fluid. A second internal conduit forms a second annulus between the first and second internal conduits. A burner tip body defined by an inner wall, an outer wall, and a half-toroid crown, the inner wall connected to the first internal conduit, the outer wall connected to the external conduit, the inner wall defining a central flow passage for a combustible mixture. A third internal conduit generally concentric with the external conduit and positioned between the external and the first internal conduits, a first end of the third internal conduit extending into but not connecting with the half-toroid crown. A first end of the second internal conduit recessed is below the half-toroid crown, and the position of the first ends of the second and third internal conduits delay combustion of fuel with the oxidant.

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First Claim