Multi-Burner Head Assembly for Flame Profile and Flashback Control
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Solution Overview
Problem
Uniform burner head designs in heat exchangers, such as gas furnaces, result in inconsistent flame profiles due to varying fuel/air ratios, leading to performance issues and increased risk of flashback, as each burner head receives different amounts of air, causing incomplete burns and higher operation costs.
Innovation Solution
A multi-burner head assembly with a venturi inlet coupled to multiple burner heads of varying heights and widths, allowing for adjustable flame profiles by controlling burner head characteristics like height, width, and distance between heads, which affects the fuel/air ratio and flame shape.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If uniform burner head designs with fixed heights are used, then device simplicity and ease of manufacture are improved, but flame profile consistency and combustion performance deteriorate due to varying fuel/air ratios
Solution Approach 1:
The patent applies local quality by varying the height of individual burner heads within the assembly. Each burner head is positioned at a specific height relative to the heat exchanger surface, creating localized differences in air intake and fuel/air mixing characteristics. This allows each burner to achieve optimal combustion performance for its specific location, resulting in consistent flame profiles across the entire assembly while maintaining reliable combustion.
2Device complexity
If uniform burner head designs are used, then device complexity is reduced, but flashback risk increases due to inconsistent fuel/air ratios and flame profiles
Solution Approach 1:
By implementing local quality through varied burner head heights, the patent creates optimized fuel/air ratios at each burner location. This localized optimization ensures that each burner operates within safe combustion parameters, preventing the formation of conditions that could lead to flashback. The different heights allow for tailored air intake control at each position, eliminating the harmful effects of inconsistent combustion that arise from uniform designs.
3Reliability
If burner head characteristics are varied, then flame profile control and combustion performance are improved, but device complexity and manufacturing difficulty increase
Solution Approach 1:
The patent applies segmentation by dividing the burner assembly into multiple independent burner head units, each with specific height characteristics. This segmentation allows for standardized manufacturing of individual burner head components that can be produced using conventional techniques, then assembled into the complete multi-burner assembly. The modular nature of this approach maintains ease of manufacture while achieving the performance benefits of varied burner head characteristics.
4Adaptability or versatility
If varied burner head heights and characteristics are implemented, then adaptability and flame profile control are improved, but device complexity increases
Solution Approach 1:
The patent uses segmentation to create a modular multi-burner assembly where each burner head is an independent unit with specific height and characteristic variations. This modular segmentation provides adaptability and versatile flame profile control, as each segment can be optimized for its specific function while maintaining overall system manageability. The segmented design allows for flexible configuration and adjustment without creating excessive device complexity.
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 multi-burner head assembly enables precise control over flame profiles, reducing the risk of flashback and improving combustion performance by allowing customizable fuel/air ratios and flame characteristics, thus enhancing operational efficiency and safety.
Implementation Method 1
A multi-burner head assembly may include a venturi inlet coupled to more than one burner head
Data Source
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AI summary
In various implementations, a multi-burner head assembly may include a venturi inlet coupled to burner heads. The multi -burner head assembly may allow control of the flame profile generated by the assembly. For example, burner heads of the multi-burner head assembly may include different characteristics, such as height.