Gas Hob Pan Support Arm Positioning to Reduce Flame Interference
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Solution Overview
Problem
In gas hobs, the pan support structures intersect with flame crowns, reducing combustion efficiency and increasing emissions, especially in high-power burners where the asymmetric arrangement of grate arms leads to increased emission issues.
Innovation Solution
A gas hob design featuring a top plate with a first grate surrounding a vertically aligned burner and a wok burner, and a second grate beside it with burners aligned horizontally, where the support arms are positioned to minimize contact with the flame, using a specific arm distance formula to balance the support and reduce interference, allowing for ergonomic gas control access and robust structural integrity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If the pan support arms are positioned close to the burners to provide stable pan support, then the structural stability is improved, but the combustion efficiency deteriorates due to flame interference
Solution Approach 1:
The patent applies dimensional change by positioning support arms at different vertical heights (levels) rather than in a single plane. The first support arm is positioned at a first vertical height and the second support arm at a second vertical height, creating a three-dimensional arrangement that allows flame passage between arms while maintaining pan support stability.
Solution Approach 2:
The pan support structure is segmented into multiple support arms positioned at different locations and heights around the burner. This segmentation allows the flame to pass through the gaps between arms rather than being blocked by a continuous structure, improving combustion efficiency while maintaining structural support.
2Power
If the support arms are arranged asymmetrically to accommodate high-power burners, then the burner power is improved, but the emission values increase due to flame contact with arms
Solution Approach 1:
The patent uses vertical dimensionality to position support arms at different heights, creating space for the flame to pass through without contacting the arms. This resolves the emission problem while maintaining the asymmetric configuration needed for high-power burner operation.
Solution Approach 2:
The flame crown acts as an intermediary element that passes through the space between support arms positioned at different vertical levels. This arrangement allows the flame to perform its heating function without being blocked or contaminated by direct contact with the support arms.
3Device complexity
If the grate arms are placed in the same plane to simplify structure, then the manufacturing complexity is reduced, but the combustion efficiency deteriorates due to flame blockage
Solution Approach 1:
The patent transitions from a two-dimensional single-plane arrangement to a three-dimensional multi-level arrangement of support arms. This adds vertical complexity but resolves the flame blockage issue by creating gaps at different heights through which the flame can pass freely.
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 cooking performance by reducing the negative impact of pan supports on combustion efficiency and emission values, providing better space for cooking pans and improving structural strength while maintaining ergonomic control access.
Implementation Method 1
Each burner is fed with combustible gas by means of an underlying gas injector and mixes the ambient air with the combustible gas and a flame crown extends radially outwardly manner to heat the cooking pans above
Data Source
Figure 1~2b
AI summary
The present invention relates to a gas hob comprising a top plate (12); a first grate (20) supported by the top plate (12) such that surrounding vertically aligned a first burner (50) and a wok burner (40) having a first distance (a) between the centers, respectively and a second grate (30) provided on the top plate (12) side-by-side to the first grate (20) surrounding a second burner (60) horizontally aligned with the first burner (50) and a third burner (70) having a second distance (b) between the centers which is smaller than the first distance (a) aligned vertically therewith. The gas hob comprises a lower support arm (35) extending from the second grate (20) to the radial center of the third burner (70) and intermediate arm distance (x) between a first support arm (25) extending from first grate (20) to the wok burner (40) on the same horizontal axis with the lower support arm (35) and a second support arm (2) disposed below and parallel to the first support arm (25) at a predetermined intermediate arm distance (x).