Gas flame stabilization method and apparatus

Inactive Publication Date: 2009-12-17
WORGAS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0013]The foregoing needs are met, to a great extent, by the present invention, wherein in one aspect a method and apparatus is provided that in some embodiments improve burner efficiency, reduce undesirable emissions, and maintain desirable characteristics such as a desired modulation range, increased flame stability, desired ignition characteristics, desired burner load, and a reduction or absence of resonance combustion noise.

Problems solved by technology

Such resonance can be difficult to control.
The resonance can affect the combustion of the air and fuel mixture creating undesirable affects such as more NOx emissions, instability of the flame, or other undesirable burning characteristics.
Increasing these performance parameters are becoming more challenging as it is difficult to reach better performance parameters with present known burner technology.
The emission limits and efficiency requirements are becoming more difficult to achieve while maintaining or increasing burner performance characteristics, such as modulation range, stability of flame, ignition characteristics, burner load and absence or reduction of resonance combustion noise.

Method used

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  • Gas flame stabilization method and apparatus
  • Gas flame stabilization method and apparatus
  • Gas flame stabilization method and apparatus

Examples

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Embodiment Construction

[0027]Embodiments in accordance with the invention will now be described with reference to the drawing figures in which like reference numerals refer to like parts throughout. A burner 30 in accordance with an embodiment of the invention is illustrated in FIG. 3. The burner 30 is, in some aspects, similar to the burner shown in FIG. 1. However, the burner 30 shown in FIG.3 has several key distinctions.

[0028]The burner 30 includes an interior burning surface 32. The interior burning surface 32 may in some embodiments be made of refractory high temperature steel. Alternatively the burning surface 32 could be made of metal fibers or ceramics. Any suitable material may be used to comprise the burning surface 32 in accordance with the invention. The burner 30 is generally cylindrical in shape with one end having a cap 34. Near the other end of the burner is a flange 36 having fastener holes 38 for attaching the burner 30 to a support structure.

[0029]The burner 30 includes ports 40 locate...

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PUM

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Abstract

A burner includes: a body defining an interior cavity; a burning surface located in the body and defining, at least in part, the interior cavity; a defusing surface located on an exterior portion of the body; ports on the body extending through the defusing and burning surfaces and configured to provide fluid communication between the interior cavity and ambient air outside the body; and an opening larger than at least one of the ports, the opening providing fluid communication between the interior cavity and a space outside of the body. A method of burning a gas and reducing acoustic feedback in a combustion device are also described.

Description

FIELD OF THE INVENTION[0001]The present invention relates generally to a method and apparatus for stabilizing a gas flame and reducing NOx emissions. More particularly, the present invention relates to a method and apparatus for combusting a air and fuel mixture in a hollow cavity of a burner.BACKGROUND OF THE INVENTION[0002]Many household and commercial combustion devices, such as furnaces, hot water heaters, gas dryers, boilers, absorption heat pumps, sterling engines and other devices, often use burners to burn an air and fuel mixture to create heat. The fuel can include natural gas, propane, or other suitable fuels. Usually the burner is located in a combustion chamber and a pre-mixture of air and fuel is provided to the burner for combustion.[0003]FIG. 1 is an example of a typical burner. As shown in FIG. 1, the burner 10 is generally cylindrical in shape, although typical burners may include other shapes. On the outside of the cylinder is a burning surface 12 upon which the ai...

Claims

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Application Information

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IPC IPC(8): F23C7/00F23M3/04
CPCF23C2900/03005F23D2203/1012F23D14/02
InventorBERTHOLD, GUNTHERHILLIARD, TERRYJACOBS, JAMES
OwnerWORGAS