Burner Assembly Converging Diverging Sections
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Solution Overview
Problem
Conventional burner assemblies lack efficient mixing of fuel and air, leading to incomplete combustion and uneven flame profiles, which affects heat distribution and efficiency in applications like furnaces and boilers.
Innovation Solution
The burner assembly incorporates a body with converging and diverging sections to mix fuel and primary air, allowing for controlled flow and mixing of streams through specific geometric configurations, including converging and diverging portions, to optimize combustion at multiple burner heads.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional burner assemblies use a single inlet coupled to a single burner head, then the structure is simple, but the fuel-air mixing efficiency is poor leading to incomplete combustion
Solution Approach 1:
The burner assembly is segmented into multiple functional sections within the body: a first section with a first converging portion, a second section with a first diverging portion, and a third section with a second converging portion. This segmentation allows different stages of mixing and flow control to occur in distinct zones, improving fuel-air mixing efficiency and combustion completeness while maintaining a relatively compact structure.
Solution Approach 2:
The burner body incorporates curved geometric features including converging and diverging portions with specific arc radii (e.g., arc radius of 5-6 inches for portions of the first diverging part). These curved surfaces guide the fluid flow more effectively than straight sections, enhancing mixing by creating controlled turbulence and swirl patterns that improve fuel-air homogeneity without significantly increasing structural complexity.
2Stability of the object's composition
If conventional burners use simple flow paths, then manufacturing is easy, but flame profile uniformity is poor affecting heat distribution
Solution Approach 1:
Different sections of the burner body have locally optimized geometries tailored to specific functional requirements. The first section has a converging portion to initial mixing, the second section has a diverging portion with larger arc radius for secondary mixing and flame stabilization, and the third section has another converging portion for final mixture conditioning. Each section's geometry is locally optimized to achieve uniform flame profile while maintaining manufacturability through modular design.
3Productivity
If conventional burners lack mixing sections, then the device is simple, but combustion efficiency is reduced due to uneven fuel-air mixture
Solution Approach 1:
The burner assembly performs preliminary mixing actions within the body before the mixture reaches the burner head. The first converging portion initiates mixing by accelerating the fuel stream and inducing primary air entrainment. The diverging portion then allows the mixture to expand and mix further. This preliminary action ensures that a homogeneous fuel-air mixture is established before combustion occurs at the burner head, improving combustion efficiency without adding complex external mixing devices.
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 the homogeneity of the fuel-air mixture, leading to more complete combustion, improved flame profiles, and increased heat distribution efficiency across burner heads.
Implementation Method 1
Fuel and/or primary air may flow through the fuel inlet and mix in the body of the burner assembly. The body may include one or more converging and/or diverging sections to mix the fuel and the primary air.
Implementation Method 2
The first section may be disposed proximate the second end and may include a first converging portion. The third section may be disposed proximate the second end, and may include a second converging portion.
Implementation Method 3
The second section may include a first diverging portion. The arc radius of at least a portion of the first diverging part may be approximately 5 inches to approximately 6 inches.
Implementation Method 4
The fluid stream of fuel and primary air may be provided to the burner head(s) of the burner assembly for combustion of the fuel in the fluid stream.
Implementation Method 5
combustion of the fuel in the fluid stream
Data Source
AI summary
In various implementations, a burner assembly may include a body coupled to burner heads. The body may include one or more converging and/or diverging parts. For example, the body may include a diverging part proximate one or more of the burner heads of the burner assembly. The body may allow a predetermined fuel/air ratio to be provided to the burner head, in some implementations.