Dual-Surface Burner System for Low Power Density with Uniform Heating
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Solution Overview
Problem
Existing burner systems face challenges in achieving low power densities while maintaining homogeneous temperature distribution, as reducing power density below a certain minimum can lead to incomplete combustion and hotspots, and increasing power density results in non-uniform heating.
Innovation Solution
The burner system incorporates a second afterburning surface downstream of the primary burner surface, utilizing catalyst materials on both surfaces to ensure complete combustion and oxidize carbon monoxide into safe exhaust gases, along with a distribution plate and point lattice combustion sites for uniform heat distribution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If the power density of the burner system is reduced below the minimum required for complete combustion, then the specific power density decreases, but incomplete combustion occurs and carbon monoxide is formed
Solution Approach 1:
The burner system is divided into two separate burner surfaces: a first burner surface for primary combustion and a second burner surface for afterburning. This segmentation allows the first surface to operate at low power density while the second surface completes the combustion process, converting carbon monoxide to carbon dioxide.
Solution Approach 2:
The second burner surface acts as an intermediary that receives exhaust gases from the first burner surface and performs afterburning. This intermediary stage enables complete combustion without requiring the first surface to operate at high power density, thus preventing carbon monoxide formation while maintaining low overall power density.
2Power
If individual flames are located further apart to reduce overall power density, then the average specific power density decreases, but non-uniform temperature distribution and hotspots occur
Solution Approach 1:
Different regions of the burner system are assigned different functions: the first burner surface provides localized combustion zones with appropriate spacing, while the second burner surface provides continuous afterburning across its entire area. This local differentiation ensures uniform temperature distribution while maintaining low overall power density.
Solution Approach 2:
The afterburning process on the second burner surface provides continuous heat distribution across the entire cooking surface. This continuous action compensates for the gaps between individual flames on the first burner surface, ensuring uniform temperature distribution without requiring high power density.
3Reliability
If the burner system operates with high power density to ensure complete combustion, then combustion efficiency improves, but uniform heating of the cooking surface cannot be achieved
Solution Approach 1:
The combustion process is segmented into two stages: primary combustion on the first burner surface and afterburning on the second burner surface. This segmentation allows each stage to be optimized independently for both completeness and uniformity, resolving the contradiction between reliable combustion and uniform heating.
Solution Approach 2:
The solution adds a spatial dimension by introducing a second burner surface downstream of the first. This dimensional expansion allows the system to achieve complete combustion through the afterburning process while maintaining low power density and ensuring uniform heat distribution across the cooking surface.
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 configuration allows for low power density operation with homogeneous temperature distribution, reducing carbon monoxide emissions and ensuring uniform heating across the cooking surface without hotspots, while maintaining efficient combustion.
Implementation Method 1
the first burner surface and/or the second burner surface are provided with a catalyst material, thereby enabling the further reduction of the specific power density
Implementation Method 2
fuel is combusted on a first burner surface of the burner system and the exhaust gases generated by the combustion are afterburned on a second burner surface
Implementation Method 3
These gases, in particular carbon monoxide, are oxidized further through afterburning on the second burner surface and converted into normal safe combustion exhaust gases
Implementation Method 4
heat generated through the combustion of gas serves to heat a surface that comes into contact with the food item to be cooked directly
Implementation Method 5
the burner system has a low minimum power density with homogeneous temperature distribution
Data Source
AI summary
A burner system for a cooking device has at least one burner surface wherein the at least one burner surface is designed in such a way that the burner system has a low minimum power density with homogeneous temperature distribution at the same time. In a first aspect, the burner system includes a fuel supply and a first burner surface for burning the fuel that is provided downstream of the fuel supply. The burner system includes a second burner surface for afterburning that is separate from the first burner surface and is provided downstream from the first burner surface. Moreover, a method for operating the burner system is shown.