Burner Windbreak Device Flame Kernel Stability
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Solution Overview
Problem
The existing burner apparatus for diesel engines has low ignition performance and struggles to generate high-temperature gas stably due to a small flame kernel being blown off by high fluid flow speeds around the heat generating area.
Innovation Solution
Incorporating a windbreak device around the heating portion of the burner apparatus to reduce fluid flow speed, combining a glow plug with an auxiliary heating portion, and using a combustion supporting air supply to promote flame kernel growth and stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a glow plug or spark plug is used as the ignition system to heat air-fuel mixture to ignition temperature, then ignition can be initiated, but the flame kernel is small and容易被 high fluid flow speed blowing off, resulting in low ignition performance
Solution Approach 1:
A windbreak device is introduced as an intermediary element between the heating portion and the high-speed fluid flow. This windbreak device mediates the interaction by reducing the fluid flow speed in the vicinity of the heating portion, thereby protecting the flame kernel from being blown off while allowing the ignition system to function effectively.
Solution Approach 2:
The windbreak device provides preliminary protection against the harmful effect of high fluid flow speed before the flame kernel can be destroyed. By pre-reducing the flow speed in the critical zone around the heating portion, the system prevents the flame kernel from being blown off, ensuring stable ignition.
2Productivity
If high fluid flow speed is supplied to the heating portion for rapid combustion, then combustion speed increases, but the flame kernel is blown off and cannot grow, reducing ignition effectiveness
Solution Approach 1:
The combustion process is segmented into two distinct zones: a protected ignition zone where the windbreak device reduces flow speed to allow flame kernel formation and growth, and a high-speed combustion zone where rapid combustion occurs. This segmentation allows both slow ignition and fast combustion to occur effectively in different spatial regions.
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
Improves ignition performance and generates high-temperature gas stably by preventing the flame kernel from being blown off and expanding the heating area, leading to enhanced combustion efficiency.
Implementation Method 1
a heating portion which heats the air-fuel mixture to its ignition temperature or more
Implementation Method 2
the air-fuel mixture is ignited and combusted
Implementation Method 3
configured to reduce a flow speed of fluid which is supplied to the heating portion
Data Source
Figure 1
Figure 2
Figure 3
AI summary
This burner apparatus (S1) includes: an ignition system (7) including a heating portion (7a, 7c) which heats air-fuel mixture to its ignition temperature or more; and a windbreak device (10) placed around the heating portion (7a, 7c) apart from the heating portion (7a, 7c), and configured to reduce a flow speed of fluid (X) which is supplied to the heating portion (7a, 7c). According to the burner apparatus (S1), it is possible to improve the ignition performance of the ignition system, and to also generate high-temperature gas stably.