Gas Burner Deflecting Element for Improved Air-Fuel Mixing Efficiency
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Solution Overview
Problem
Existing burners for gas-heated cooking appliances lack efficiency in mixing burnable gas with primary air, resulting in suboptimal combustion and energy utilization.
Innovation Solution
Incorporation of a deflecting element within the pipe to improve the mixing of burnable gas and primary air, specifically designed to deflect the gas or air flow, which can be in the form of a wire or cruciform shape, arranged between the ends of the pipe or integrally formed with it, enhancing the energy efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If a simple pipe structure is used for mixing burnable gas with primary air, then the device complexity is low and ease of manufacture is high, but the mixing efficiency is insufficient and energy efficiency is low
Solution Approach 1:
The deflecting element is segmented into multiple wire elements (e.g., three wires) arranged within the pipe. Each wire segment creates localized flow disruption and mixing zones, collectively achieving thorough gas-air mixing without requiring a complex integrated structure. This segmentation allows simple individual components to work together for high mixing efficiency.
Solution Approach 2:
The deflecting wires act as intermediary elements between the burnable gas flow and primary air flow. These wire intermediaries physically disrupt the flows and create turbulence that enhances mixing, serving as a mediating structure that facilitates efficient combustion without requiring complex mechanical systems.
2Ease of manufacture
If no deflecting element is used in the pipe, then the manufacturing is simpler and the structure is less complex, but the mixing of burnable gas with primary air is insufficient
Solution Approach 1:
The deflecting wires are positioned at specific locations within the pipe (e.g., at different heights and angular positions) to create localized mixing zones where gas and air flows interact most effectively. This local quality approach ensures optimal mixing at critical points without requiring complex structures throughout the entire pipe.
Solution Approach 2:
Instead of using a complex mixed-flow pipe design to achieve mixing, the invention inverts the approach by using simple wire elements that deflect and disrupt flows to create mixing. This inversion from complex structure to simple elements achieves the same mixing function more easily manufacturable.
3Loss of energy
If the deflecting element is positioned away from the center of the pipe, then the arrangement is simpler, but the energy efficiency increase is smaller
Solution Approach 1:
The deflecting wires are positioned at equipotential locations within the flow field (e.g., at specific height positions where flow velocity and pressure gradients are optimal for mixing). This positioning ensures maximum mixing efficiency without requiring precise asymmetric placement, maintaining simplicity while achieving high energy efficiency.
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 deflecting element significantly increases energy efficiency by improving the combustion of the gas mixture at the flame outlets, achieving a 5.4% increase in energy efficiency compared to burners without this feature.
Implementation Method 1
The deflecting element is designed to deflect the burnable gas, the primary air or both. The deflection here takes place in particular in respect of the main inflow direction of the burnable gas, of the primary air or of the mixture thereof.
Implementation Method 2
the burnable gas combusts even better at flame outlets of the burner, so that the energy efficiency of the burner is increased
Data Source
AI summary
A burner for a gas-heated cooking appliance includes a pipe for mixing burnable gas with primary air, and a deflecting element which is arranged in an interior space which is bounded by the pipe. The pipe has one end which points toward a nozzle of the burner and another end which points toward a cover of the burner. The deflecting element is arranged in the interior space between a center of the pipe in respect of a longitudinal direction thereof and the one end of the pipe.