U-Shaped Combustor Pipe with Reduced Section for Even Flame Distribution
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Solution Overview
Problem
Conventional combustors fail to achieve even gas and air mixing due to the shape of the pipe, resulting in uneven flame distribution and reduced heating efficiency.
Innovation Solution
The combustor design includes a pipe with a first section and a second section that is bent away, featuring reduced sections with a smaller sectional area, which ensures even flow delivery to the burner tray, enhancing combustion efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the pipe has a bending section with gradually reducing diameter, then the pipe structure is simplified, but the gas flow distribution becomes uneven
Solution Approach 1:
The pipe incorporates a reduced section with specific dimensional parameters (smaller than both upstream and downstream sections) to create localized flow control. This local modification changes the flow characteristics at that specific position, causing flow separation and redistribution that results in more uniform gas flow distribution across all flame holes while maintaining overall pipe structure simplicity
2Ease of manufacture
If the pipe diameter gradually reduces from right to left, then manufacturing is simplified, but combustion uniformity deteriorates
Solution Approach 1:
The pipe design includes a reduced section where the diameter parameter changes abruptly (is smaller than both upstream and downstream sections) rather than gradual reduction. This parameter change creates flow separation and redistribution that uniformizes the gas flow to each flame hole, achieving uniform combustion while maintaining ease of manufacture through simple geometric modifications
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 design achieves even flame distribution across the burner tray, improving combustion efficiency by ensuring consistent gas flow through the flame holes.
Implementation Method 1
a smallest sectional area in the at least one reduced section is smaller than sectional areas on both sides of the reduced section
Implementation Method 2
The second pipe section is bent in a direction away from the another end of the first pipe section, and is provided over the first pipe section
Data Source
AI summary
A combustor is provided, including a pipe and a burner tray. The pipe is transverse U-shaped, including a first pipe section and a second pipe section. The first pipe section has an inlet, and the second pipe section has an outlet extending along an axial direction thereof. The second pipe section has at least one reduced section, wherein a smallest sectional area in the reduced section is smaller than sectional areas on both sides of the reduced section. The burner tray is connected to the second pipe section, provided over the outlet, and has a plurality of flame holes which communicate with the outlet. Whereby, with the reduced section, the flow including gas could be evenly delivered to the burner tray. As a result, after the gas exhausted through the flame holes is ignited, the combustion range would be evener, which enhances the combustion efficiency.