High turndown burner with integral pilot
AssigneeEclipse, Inc.
InventorLyle S. Spielman
Life of this patent
Estimating the term…
Abstract
An industrial burner in which gaseous fuel is supplied to a mixing and combustion zone within a burner body by way of a conical distribution manifold formed with annular rows of gas discharge ports. A separate passage for pilot gas is formed through the manifold and terminates as an isolated pilot port which discharges a jet of pilot gas for establishing a pilot flame uses to ignite the main gas. Combustor plates surround the gas manifold and are formed with air passages which are so angled and so located as to form canopies of air jets over the fuel jets, the air jets intersecting each other at a significant distance from the center line of the burner.
Claims10
A gas burner comprising a burner body having a mixing and combustion zone, means for admitting combustion air into said mixing and combustion zone, a fuel conduit for gaseous fuel, a fuel manifold communicating with said conduit and having a wall with a series of angularly spaced main fuel ports formed therethrough for discharging said fuel from said conduit and into said mixing and combustion zone for mixture with said combustion air, a single pilot gas port formed through said wall of said manifold, a pilot gas conduit communicating with said pilot gas port and operable to supply a flow of pilot gas through said manifold ny way of said pilot gas port, said pilot gas conduit and said pilot gas port being isolated from said fuel conduit, from said series of main fuel ports and from said combustion air admitting means, and means for igniting the gas discharged from said pilot gas port.
A gas burner comprising a burner body having a mixing and combustion zone, means for admitting combustion air into said body for flow to said mixing and combustion zone, a fuel conduit for gaseous fuel, a fuel manifold communicating with aid conduit and having a wall with a series of fuel ports therethrough for discharging said fuel from said conduit and into said mixing and combustion zone, an annular combustor shroud extending downstream from said manifold and having an inner surface which flares upon progressing downstream, angularly spaced rows of axially spaced air ports formed through said shroud for directing combustion air through said shroud and into said mixing and combustion zone, the wall of said fuel manifold being generally conical and tapering upon progressing downstream, the fuel ports in said manifold being spaced angularly from one another around said manifold an being angled so as to cause said fuel to be discharged from said manifold in jets which follow the inner surface of said combustor shroud, there being two angularly spaced fuel ports between each adjacent pair of rows of air ports so as to cause said fuel jets to follow the inner surface of said combustor shroud on both sides of each row of air ports, the inner surface of said shroud being substantially perpendicular to the conical wall of said manifold, and said air ports being positioned to cause canopies of intersecting air jets to be formed over said fuel jets as said combustion air is directed through said air ports, the air jets intersecting at a significant distance from the axially extending center line of said shroud.
Dependencies are inferred from the claim text.