Dual-Wall Burner Head With Staying Guide for Flame Spread
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Solution Overview
Problem
Existing burners face issues with flame spread obstruction due to food or slop clogging and unburned mixed gas leakage, leading to inefficient heating and flame extinction.
Innovation Solution
A burner design featuring a burner head with an outer and inner wall, a mixed gas chamber, and a staying guide that allows mixed gas to be retained, ensuring smooth flame spread and preventing gas leakage by using a rib to connect the inner wall and a flame staying chamber to reignite the flame when extinguished.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a slit is provided at the outer cap to spread the flame between the outer burner head and inner burner head, then the flame can be spread and reignited when one burner head flame is extinguished, but the slit may be clogged with food or slop during use, preventing flame spread
Solution Approach 1:
The flame spread function is segmented from the single slit path into multiple alternative paths: flame can spread through the mixed gas chamber between the outer and inner burner heads, or through the flame spread passage, or through multiple slits. This segmentation ensures that if one path is clogged, flame can still spread through other paths, resolving the contradiction between reliability and clogging.
Solution Approach 2:
Different regions of the burner cap are given different functions and properties: the outer cap has multiple slits for flame spread, the mixed gas chamber provides an alternative flame path, and the flame spread passage offers another route. This local differentiation ensures that clogging in one region does not completely block flame spread, maintaining reliability while accommodating the harmful effect of food/slop accumulation.
2Reliability
If the slit is used for flame spread, then flame can be maintained, but unburned mixed gas leaks from the burner heads when the slit is clogged
Solution Approach 1:
The mixed gas chamber acts as an intermediary space that receives mixed gas from the burner head and provides multiple alternative paths for flame spread. When the slit is clogged, the unburned mixed gas can still reach the flame spread passage or other slits through this intermediary chamber, preventing gas leakage while maintaining flame reliability.
Solution Approach 2:
The mixed gas is preliminarily distributed into the mixed gas chamber and flame spread passage before reaching the burner heads. This preliminary action ensures that if one path is blocked, the gas is already positioned to flow through alternative paths, preventing leakage while maintaining the ability to sustain flame.
3Reliability
If a staying guide is provided at the inner circumferential surface of the inner wall to retain mixed gas, then flame spread is smoothed and gas leakage is prevented, but the device complexity increases
Solution Approach 1:
The staying guide structure serves multiple functions simultaneously: it retains mixed gas to ensure sufficient fuel for flame spread, prevents unburned gas leakage, and guides the flow of mixed gas through the chamber. By making this single structure multi-functional, the patent achieves improved reliability without proportionally increasing device complexity.
Solution Approach 2:
The staying guide merges several functions into one integrated component: gas retention, flow guidance, and leakage prevention. This merging reduces the number of separate parts needed, thereby limiting the increase in device complexity while achieving the desired improvement in flame spread reliability and gas containment.
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 ensures consistent and efficient flame spread between the outer and inner burner heads, preventing unburned gas leakage and maintaining heat even when the flame is extinguished, enhancing cooking performance.
Implementation Method 1
a staying guide provided at an inner circumferential surface of the inner wall and configured to allow the mixed gas flowing from the mixed gas chamber to be stayed thereon
Implementation Method 2
an outer wall having a plurality of first flame holes at which flame are generated, an inner wall spaced from the outer wall and having a plurality of second flame holes at which flame are generated
Data Source
AI summary
Provided is a burner including a burner head configured to receive a mixed gas; and a burner cap configured to cover the burner head, wherein the burner head includes an outer wall having a plurality of first flame holes at which flame are generated, an inner wall spaced from the outer wall and having a plurality of second flame holes at which flame are generated, and a mixed gas chamber formed between the outer wall and the inner wall, and a staying guide provided at an inner circumferential surface of the inner wall and configured to allow the mixed gas flowing from the mixed gas chamber to be stayed thereon.