Foraminous Burner Liner Mesh Structure for Uniform Combustion
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Solution Overview
Problem
Existing foraminous burner liners for gas abatement systems suffer from macro-uniformity issues due to join-lines and reliance on trial and error for property alteration, lacking a predictable method for controlling combustion properties.
Innovation Solution
A foraminous burner liner design featuring a wall composed of interconnected, out-of-phase, substantially regular openwork mesh layers with helical struts, manufactured via additive processes, ensuring optical opacity and uniform combustion support.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If traditional fibre layup or foam liners are used, then the burner liner can be manufactured, but macro-uniformity is affected due to join-lines and random structure
Solution Approach 1:
The burner liner wall is divided into multiple concentric layers, each comprising a regular openwork mesh. This segmentation allows each layer to be manufactured with high precision using additive manufacturing, eliminating join-lines while maintaining structural integrity. The regular mesh pattern in each segment can be precisely controlled to achieve macro-uniformity throughout the entire liner.
Solution Approach 2:
The patent changes the structural parameters from random (traditional foam/fibre) to regular (controlled mesh pattern). By controlling parameters such as mesh opening size, wall thickness, and layer spacing, the invention achieves predictable combustion properties and uniform firing rates without the macro-uniformity issues of traditional liners.
2Reliability
If traditional burner liner designs are used, then combustion can be supported, but predictable control of combustion properties is not achieved due to trial and error requirements
Solution Approach 1:
The invention enables predictable control of combustion properties by changing from random structure to regular mesh structure with controllable parameters. The regular openwork mesh allows precise control of thermal conductivity, porosity, and surface area, which directly influence combustion characteristics. This eliminates the need for trial and error experimentation.
Solution Approach 2:
The regular mesh structure provides inherent feedback mechanisms for combustion control. The consistent geometric parameters allow for predictable heat transfer and fuel-air mixing, enabling operators to anticipate combustion behavior and adjust operating parameters accordingly without extensive trial and error.
3Reliability
If sufficient layers are added to achieve optical opacity, then uniform combustion is supported, but wall thickness increases
Solution Approach 1:
The invention achieves optical opacity with minimal wall thickness by changing the structural parameters of the mesh. By controlling mesh opening size, strut thickness, and layer spacing, the regular openwork mesh provides sufficient optical blocking properties with thinner walls compared to traditional foam or fibre liners, while maintaining uniform combustion support.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The design achieves uniform inner-face surface firing rates, low back-face temperatures, and minimal thickness, allowing for predictable control of thermal conductivity and combustion properties, reducing the need for trial and error.
Implementation Method 1
the wall is optically opaque when viewed externally in any radially inward direction normal to the wall
Implementation Method 2
The wall comprises sufficient layers arranged such that the wall is optically opaque when viewed externally
Implementation Method 3
Fuel gas and air are simultaneously supplied to the foraminous burner liner to effect flameless combustion at the exit surface
Data Source
AI summary
The present invention provides a foraminous burner liner for a gas abatement system. The burner liner comprises a hollow body defined by a wall, the wall comprising a plurality of interconnected substantially concentric layers. Each layer of the wall comprises a substantially regular openwork mesh; wherein the substantially regular openwork mesh of each layer is configured such that it is out of phase with one or more adjacent layers, and wherein the wall comprises sufficient layers arranged such that the wall is optically opaque when viewed externally in any radially inward direction normal to the wall.