Gas Burner Segmented Mixing for Flashback Prevention
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Solution Overview
Problem
Existing gas burners face challenges in achieving homogeneous flame distribution and preventing flame flashback, which affects the efficiency and safety of combustion processes.
Innovation Solution
The gas burner design includes a structure with gas distribution means and air distribution means, where combustible gas and air are directed to a mixing area through independent and fragmented pathways, ensuring the right amount of air reaches each mixing point, preventing flashback, and utilizing a distribution plate with passage openings to focus air flow, and a constricted area to regulate gas flow, resulting in uniform flame distribution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If gas and air are mixed before ignition in a premix burner, then combustion efficiency is improved, but flame flashback risk increases
Solution Approach 1:
The burner divides the combustion process into separate zones: a premixing zone where gas and air are mixed for efficient combustion, and a diffusion zone where additional air mixes with the flame front. This segmentation allows the benefits of premixing while preventing flashback by creating a diffusion barrier zone.
Solution Approach 2:
The patent introduces an intermediary diffusion zone between the premixing area and the combustion chamber. This intermediate zone acts as a buffer that prevents the flame from propagating back into the premixing zone, thereby preventing flashback while maintaining combustion efficiency.
2Stability of the object's composition
If complex distribution systems are used to achieve homogeneous flame distribution, then flame uniformity is improved, but device complexity increases
Solution Approach 1:
The distribution system is segmented into multiple independent channels, each with its own gas inlet and air inlet. This segmentation allows for simplified individual channel design while achieving homogeneous overall flame distribution through the combined output of multiple uniform channels.
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 ensures efficient and safe combustion by achieving homogeneous flame distribution throughout the burner, preventing flashback, and ensuring consistent air-gas mixture quality, leading to improved heat distribution and burner reliability.
Implementation Method 1
a constricted area (4a) disposed between said main chamber (4) and each main conduit (4b), said main conduit (4b) being communicated with said main chamber (4) through said respective constricted area (4a)
Implementation Method 2
a distribution plate (5') arranged in said mixing area (7) comprising a plurality of passage openings (5a), each passage opening (5a) being configured for directing air to at least one mixing point
Implementation Method 3
a mixing area (7) arranged above said distribution plate (5'), said passage openings (5a) being directed towards said mixing area (7)
Data Source
Figure 1~2
Figure 3~5
AI summary
Gas burner comprising a structure (1A) with gas distribution means configured for directing gas to a mixing area and air distribution means configured for directing air to said mixing area. The gas and air distribution means are communicated with a gas inlet conduit (2) and an air inlet conduit (3), respectively. The gas distribution means comprise a plurality of main conduits (4b) providing a mixing point at the outlet of each main conduit (4b). The air distribution means comprise a chamber (5) communicated with the air inlet conduit (3), and a distributor plate (5') arranged in the mixing area comprising a plurality of passage openings, each passage opening being configured for directing air to at least one mixing point.