Inner Flame Burner Outlet Layout for Uniform Heat Distribution
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Solution Overview
Problem
Existing gas burners for cooking appliances face challenges in achieving uniform heat distribution and efficiency due to complex components and limitations in fuel-air mix, often resulting in uneven flames and reduced power.
Innovation Solution
A gas burner design featuring a body with alternating groups of first and second outlets around its perimeter, an air-fuel mix inlet, a distribution chamber, and a venturi that mixes air and fuel efficiently, directing thermal energy inwardly to concentrate heat and reduce lateral heat loss.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If conventional inner flame burners are designed to direct heat inward, then thermal efficiency is improved, but the burners produce uneven flames and lack power due to limitations in fuel-air mix
Solution Approach 1:
The burner outlet is divided into multiple individual outlet apertures arranged in a circular pattern, with each aperture contributing to the overall inward-directed flame pattern. This segmentation allows precise control of fuel-air mixture distribution across different zones of the burner, enabling both inward heat direction and uniform flame appearance.
Solution Approach 2:
The burner employs different outlet aperture characteristics at different locations around the perimeter. Specifically, the outlet apertures are positioned and sized to create varying fuel-air mix ratios in different radial zones, with inner zones receiving richer mixtures and outer zones receiving leaner mixtures. This local differentiation ensures uniform flame appearance while maintaining overall inward heat direction.
2Temperature
If complex components are added to achieve improved heat distribution, then heat distribution may be enhanced, but device complexity increases
Solution Approach 1:
The burner integrates the fuel delivery system, air mixing chambers, and outlet structure into a single unified component. The body itself forms both the structural support and the functional mixing and distribution system, eliminating the need for separate mixing devices or complex assembly of multiple parts. This merging achieves effective heat distribution through a relatively simple monoblock structure.
Solution Approach 2:
The burner body serves multiple functions simultaneously: it provides structural support, contains internal air mixing passages, distributes fuel-air mixture to multiple outlets, and directs the overall flame pattern inward. This multi-functionality reduces the need for additional specialized components while achieving comprehensive heat distribution control.
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 enhances thermal efficiency by directing heat inwardly, reducing fuel consumption and providing even heat distribution, while maintaining a uniform flame appearance and shape.
Implementation Method 1
a venturi in communication with the air-fuel mix inlet at a first end thereof. The first end of the venturi has a first diameter, and the venturi extends to a second end opposite the first end and having a second diameter greater than the first diameter
Data Source
AI summary
A gas burner for a cooking appliance includes a body defining perimeter and having a plurality of first groups of respective pluralities of first outlets a plurality of second groups of respective pluralities of second outlets. Each of the first outlets respectively defines a first outlet area, and each of the second outlets defines respective reduced outlet areas that are less than the first outlet area. Further, the first groups and second groups are alternately arranged around the perimeter, and a total number of first outlets is greater than a total number of second outlets.