Abstract A pair of conduits, coaxially arranged, provide flow paths for carrying combustible reactants to a combustion zone. The central conduit, otherwise known as a distribution tube, extends to within the combustion zone and includes a disc element at the combustion zone end thereof for deflecting an oxidizing reactant moving axially along the exterior of the distribution tube. A fuel reactant introduced into the distribution tube is carried to the combustion zone end thereof where it issues through radial ports and impinges the oxidizing reactant to produce a hollow cone flame. Additionally, a mixing element is included within the distribution tube to impart centrifugal motion to liquid fuels which are then subject to being atomized in the region of the radial ports. Temperature conditioning of the fuel-atomizing gas may optionally be performed to reduce liquid fuel surface tension and to promote vaporization.
Inventors
👤 R Koppang
👤 H Burge
Bibliographic Details
Application Number—
JurisdictionUS
Data Sourcegoogle_patents
Last Synchronized2026-10-24 17:46
CPC Classifications
F; F23; F23B; F23B5/00; F23B5/02; F23D; F23D17/00
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
155 words
A burner assembly for combusting two or more reactants with a minimal yield of oxides of nitrogen, comprising: a conduit; a distribution tube mounted substantially coaxially within said annular conduit with one end thereof protruding from within said conduit and extending to within a combustion zone, said conduit forming with said distribution tube a substantially annular passage; a deflector disc affixed to said one end of said distribution tube and having A diameter in excess of that of the distribution tube, said distribution tube being characterized by a circumferential array of radially directed ports proximate said deflector; means for introducing an oxidizer at a preselected mass flow rate into said annular passage, the oxidizer forming a shroud around said distribution tube; means for introducing a fuel at another preselected mass flow rate into said distribution tube; and a mixing element mounted inside said distribution tube including means for imparting centrifugal motion to fluids passing thereby.
Claim 2
Dependent Claim
155 words
A burner assembly for combusting two or more reactants with a minimal yield of oxides of nitrogen, comprising: a conduit; a distribution tube mounted substantially coaxially within said annular conduit with one end thereof protruding from within said conduit and extending to within a combustion zone, said conduit forming with said distribution tube a substantially annular passage; a deflector disc affixed to said one end of said distribution tube and having A diameter in excess of that of the distribution tube, said distribution tube being characterized by a circumferential array of radially directed ports proximate said deflector; means for introducing an oxidizer at a preselected mass flow rate into said annular passage, the oxidizer forming a shroud around said distribution tube; means for introducing a fuel at another preselected mass flow rate into said distribution tube; and a mixing element mounted inside said distribution tube including means for imparting centrifugal motion to fluids passing thereby.
Claim 3
Dependent Claim
24 words
The burner assembly of claim 1 wherein said means for introducing a fuel includes: means for introducing the fuel tangentially to said distribution tube.
Claim 4
Dependent Claim
25 words
The burner assembly of claim 1 wherein the means for introducing a fuel further includes: means for adding pulverized solid matter to a gaseous fuel.
Claim 5
Dependent Claim
30 words
The burner assembly of claim 1 further comprising: a cooling gas tube coaxially extending through said distribution tube and said deflector and exiting into the interior of the combustion zone.
Claim 6
Dependent Claim
27 words
The burner assembly of claim 4 further comprising: another deflector suspended from one said deflector disc to radially direct cooling gas issuing from said cooling gas tube.