Gas Cooktop Burner Cap Segmentation for Flame Stability
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Solution Overview
Problem
Existing gas cooktop burners face challenges in maintaining heat efficiency and uniform cooking while ensuring flame stability, particularly in transitioning between maximum and minimum power states, leading to issues like flameout or incomplete combustion, which affects heat efficiency and increases waste gas emissions.
Innovation Solution
The burner cap design includes an inner and outer ring cap portion with specific gas outlets and concaved portions that allow for separate control of flames, enabling a broader power control range by using the outer ring gas injector to supply additional air to the inner ring cap portion, enhancing combustion completeness and reducing waste gas emissions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If the inner ring is operated at maximum fire state to ensure heat efficiency and uniform heating, then heat efficiency is improved, but when switching to minimum fire state the power cannot be lowered below a specific value (e.g., 300w for 4.0kw burner) which causes flameout or flashback
Solution Approach 1:
The burner is segmented into an inner ring cap portion with first gas outlets and an outer ring cap portion with second gas outlets. The inner ring cap portion is supplied by an inner ring gas injector, while the outer ring cap portion is supplied by an outer ring gas injector. This segmentation allows independent control of gas flow to different regions, enabling the inner ring to be completely shut off at minimum fire state while the outer ring maintains stable combustion, thus preventing flameout and flashback.
2Loss of energy
If the inner ring cap portion is supplied with more primary air to increase power and improve heat efficiency, then heat efficiency is improved, but the structural limitation of the burner prevents sufficient air supply leading to incomplete combustion and increased waste gas emissions
Solution Approach 1:
The invention introduces a third gas supply dimension by adding the outer ring gas injector and outer ring cap portion. When primary air is insufficient for the inner ring, the system activates the outer ring cap portion which receives gas from the outer ring gas injector. This dimensional expansion of the gas supply system provides an additional pathway to achieve complete combustion and maintain heat efficiency without being constrained by the primary air supply limitations of the inner ring alone.
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 achieves a heat efficiency of up to 69-70%, surpassing existing burners by ensuring high power at maximum fire states and low power at minimum fire states, while reducing waste gas emissions and improving cooking uniformity.
Implementation Method 1
The burner cap design includes an inner and outer ring cap portion with specific gas outlets and concaved portions that allow for separate control of flames, enabling a broader power control range by using the outer ring gas injector to supply additional air to the inner ring cap portion, enhancing combustion completeness and reducing waste gas emissions
Data Source
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AI summary
The present invention relates to a burner cap base of a burner used for a gas cooktop, a stove, a burner, and a gas cooktop. The burner cap base (4) includes an outer ring gas inlet (42) and a groove (47) used for accommodating gas, the outer ring gas inlet (42) is used for allowing gas supplied by an outer ring gas injector (521) to enter the burner cap base (4), the burner cap base (4) further includes a plurality of gas guide slots (43), and the gas guide slot (43) communicates the groove (47) and the outer ring gas inlet (42). The burner cap base (4) further includes a plurality of flow division portions (420), the outer ring gas inlet (42) is divided into a plurality of gas division opening (42a, 42b, 42c) by the flow division portion (420), and each gas guide slot (43) corresponds to at least one flow division portion (420). Therefore, an airflow of gas entering the groove is divided twice and can be mixed more evenly.