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| Refractory lattice and fabrication |
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| Nestable and stackable container |
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Thin and flat flame burner
| Details |
Inventors: Goodnight, Hershel E.; Jaeger, Kurt S.; Martin, Richard R.;
Assignee: John Zink Company (Tulsa, OK)
Primary Examiner: Scott; Samuel
Assistant Examiner: Anderson; G. A.
Attorney, Agent or Firm: Head & Johnson
A gas burner system for providing a thin, flat flame for use in a long narrow combustion space, has a first air supply plenum which has a long narrow rectangular cross-section, which is placed above a second plenum or combustion chamber of substantially the same cross-section. At the junction between the first and second plena there are longitudinal projections inwardly from both long walls of the second plenum, forming a long narrow rectangular inlet to the second plenum. A burner assembly comprising an elongated flattened pipe having a plurality of short air baffles welded on each side is supported in this narrow inlet to the second plenum and substantially in the center thereof. The overall width of the burner assembly is less than that of the inlet so that there are two longitudinal gaps between the burner assembly and the projections for the passage of combustion air. There are two sets of ports in the lower edge of the flattened pipe. A first set provides downstreamwardly and outwardly projecting ports for the passage of the major gas flow. A second set of smaller gas ports are drilled substantially laterally to the vertical, and the gas therefrom flows into the space behind the air baffles where a stable, sheltered flame can be provided, for continuous ignition of the major flow of gas issuing at high velocity from the first set of ports, and turbulently mixing with the air flow downwardly through the gaps. The walls of the second plenum and projections can be of conventional refractory material, or they can be of metal which is water cooled. |
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DETAILED DESCRIPTION It is a primary object of this invention to provide a burner system for providing a thin flat flame for use in a long narrow combustion space.
It is a further object of this invention to provide a burner system to provide heat greatly in excess of 10,000,000 btu per hour with a stable flame.
This invention provides a type of burner system that can be used in confined narrow long combustion spaces such as for use, for example, in submerged combustion systems.
In this case, the flame is directed downwardly within a combustion chamber lined by metal surfaces, and the combustion products pass downwardly under the bottom edge of the walls, and up through the water behind the walls to a collecting plenum at the top of the water surface.
While this type of burner system has many uses and the construction can be varied to provide for refractory wall covering, it can also be used with metal surfaces which are water cooled, such as would be the case in submerged burner operations.
These and other objects are realized and the limitations of the prior art are overcome in this invention by providing two plena; a first plenum for supply of combustion air.
This is rectangular in cross-section having a length much greater than its width.
This is attached to a continuous second plenum of substantially the same rectangular cross-section, or slightly larger, that has a pair of projections inwardly along the long walls of the plenum so as to provide a narrow long rectangular inlet into the second plenum near the junction between the first and second plena.
While this invention can be used in many types of combustion systems, it will, for convenience, be described in connection with its use in submerged combustion systems.
In such cases, the walls of the second plenum, and projections, which are in contact with flame, are made of metal, cooled by water on the back surface of the walls.
An elongated burner assembly comprises an elongated pipe, which, for convenience in providing the gas ports, has been flattened to an oval shape, and is supported with its long axis horizontal and with the principal axis of the oval in a vertical plane
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