Concentric Ring Gas Burner Assembly for High-Aspect Flame Ports
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing gas burner assemblies face challenges in manufacturing tall, narrow burner ports due to limitations in die casting and forging methods, which affect the strength and wear properties of the burner heads, making it difficult to accommodate high aspect ratio burner ports for improved heat transfer efficiency and stability.
Innovation Solution
A gas burner assembly design featuring concentrically aligned and mated outer and inner rings that define annular arrays of flame ports, allowing for the creation of tall, narrow burner ports that are easily manufactured and enhance heat transfer efficiency by premixing air and fuel before combustion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If die casting or forging methods are used to manufacture burner heads, then the burner head can be produced with sufficient strength and wear properties, but the ability to accommodate tall, narrow burner ports is limited
Solution Approach 1:
The burner head is divided into two separate concentric rings (inner ring and outer ring) that are assembled together. This segmentation allows each ring to be manufactured independently using conventional die casting or forging methods, avoiding the need to create fragile thin-walled dies for tall, narrow ports in a single piece. The separate rings can be easily manufactured and then assembled to form the complete burner head with the desired high aspect ratio flame ports.
2Productivity
If tall, narrow burner ports are used, then heat transfer efficiency is improved, but manufacturing difficulty increases due to limitations in conventional methods
Solution Approach 1:
By segmenting the burner head into assembleable rings, the design enables tall, narrow flame ports that improve heat transfer efficiency while avoiding the manufacturing limitations of conventional single-piece methods.
Solution Approach 2:
The inner ring is nested within the outer ring, with the inner ring positioned concentrically inside the outer ring. This nested configuration creates the tall, narrow flame ports between the two rings, achieving high heat transfer efficiency while using manufacturable components.
3Reliability
If forced air burners are used with tall, narrow ports, then combustion stability and efficiency are improved, but the burner head manufacturing becomes more difficult
Solution Approach 1:
Segmenting the burner head into assembleable rings enables the creation of tall, narrow ports required for forced air burner stability while maintaining ease of manufacture through conventional processes.
Solution Approach 2:
The design transitions from attempting to create high aspect ratio ports in a single monolithic structure to using multiple dimensional components (concentric rings) that assemble to achieve the same geometric result, thereby improving manufacturability while maintaining combustion performance.
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 enables improved heat transfer efficiency and stability by allowing for the use of forced air burners with tall, narrow burner ports, overcoming manufacturing limitations and enhancing combustion performance.
Implementation Method 1
Normally aspirated gas burners rely on the energy available in the form of pressure from the fuel supplied to the gas burner to entrain air for combustion
Implementation Method 2
allowing for the use of forced air burners with tall, narrow burner ports, overcoming manufacturing limitations and enhancing combustion performance
Data Source
AI summary
A gas burner assembly for a cooktop appliance includes a flame ring comprising a plurality of flame ports arranged in an annular array. An outer ring and an inner ring collectively define each flame port of the plurality of flame ports. The outer ring and the inner ring are concentrically aligned and concentrically mated. As a result of this arrangement of the outer ring and the inner ring, the plurality of flame ports are defined by the outer ring and the inner ring. The plurality of flame ports extend radially between the inner ring and the outer ring.