Gas Burner Flame Port Layout for Grate Heat Control
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Solution Overview
Problem
Conventional gas cooktops face challenges in heat transfer due to the need to avoid overheating of grates, which requires varying the spacing between burner flame ports, thereby reducing the heat output.
Innovation Solution
The gas burner design features uniformly spaced flame ports along a circumferential direction with specific polar arrays and voids, allowing for efficient heat distribution while minimizing excessive heating of grates by orienting flame ports to have a stronger radial velocity component, thus maintaining high heat output.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If the spacing between flame ports is increased to prevent excessive heating of grates, then grate overheating is avoided, but burner heat output is reduced
Solution Approach 1:
The flame ports are arranged asymmetrically with respect to the burner center, forming polar arrays that are offset from the center. This asymmetric arrangement allows the flame ports to be uniformly spaced along radial lines while maintaining appropriate spacing between adjacent ports, thereby preventing grate overheating while preserving high heat output through optimized flame distribution patterns.
Solution Approach 2:
The flame port arrangement transitions from a simple planar circular pattern to a three-dimensional polar array configuration with multiple origins spaced from the center. This dimensional change enables uniform radial spacing of flame ports while creating void spaces between arrays, effectively distributing heat more evenly across the grate surface and preventing localized overheating without sacrificing overall heat output.
2Temperature
If the spacing between flame ports is varied to avoid excessive impingement of flames on grates, then grate overheating is prevented, but heat transfer efficiency is reduced
Solution Approach 1:
The polar array configuration creates localized void spaces between adjacent flame port arrays, providing different spacing characteristics in different regions. Areas with void spaces have larger spacing to prevent flame impingement, while areas with denser port distribution maintain higher heat flux. This local variation in spacing quality optimizes both grate temperature control and heat transfer efficiency simultaneously.
Solution Approach 2:
The flame port array is segmented into multiple polar arrays with distinct origins, creating discrete groups of flame ports rather than a continuous circular distribution. This segmentation allows independent optimization of spacing within each array while maintaining uniform radial spacing, enabling efficient heat transfer within arrays while preventing excessive heating between arrays through the void spaces.
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
This design enhances heat transfer efficiency while preventing excessive grate heating, maintaining high burner performance and safety.
Implementation Method 1
A mixture of gaseous fuel and air combusts at the burners to generate heat for cooking
Implementation Method 2
orienting flame ports to have a stronger radial velocity component, thus maintaining high heat output
Implementation Method 3
This design enhances heat transfer efficiency while preventing excessive grate heating
Data Source
AI summary
A gas burner includes a burner body that defines a fuel chamber and a plurality of flame ports. The plurality of flame ports are configured for directing a flow of fuel and air out of the fuel chamber. The plurality of flame ports are distributed along a circumferential direction on the burner body such that the plurality of flame ports are uniformly spaced from a center of the fuel chamber along a radial direction. The plurality of flame ports may be oriented to direct flames away from a void within the plurality of flame ports.