Oxygen Enriched Burner With Segmented Outlets For Uniform Heating
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Solution Overview
Problem
Existing oxygen enriched burners face challenges in achieving uniform heating with high heat transfer efficiency, particularly when heating objects away from the tip surface, due to flame oscillation shortening and reduced heat transfer efficiency.
Innovation Solution
The burner design includes a central fluid outlet and peripheral fluid outlets arranged to create self-induced oscillation, with specific angular and width relationships between the outlets to optimize flame distribution and heat transfer, ensuring uniform heating over a wide area and maintaining high heat transfer efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If the flame oscillates by self-induced oscillation to achieve uniform heating, then heating uniformity is improved, but the flame is shortened and heat transfer efficiency decreases at positions away from the tip surface
Solution Approach 1:
The burner tip is divided into multiple fluid ejection outlets (central outlet and peripheral outlets) arranged in specific patterns. This segmentation allows different regions of the burner to contribute to heating different areas of the workpiece, extending the effective heating zone along the axial direction while maintaining uniformity through the oscillating flame pattern.
Solution Approach 2:
The invention transitions from a single-point flame ejection to a multi-dimensional arrangement of fluid outlets on the burner tip surface. By positioning outlets in both radial and axial directions with specific angular relationships, the system creates an extended flame structure that reaches farther along the axial direction while maintaining oscillation-induced uniformity.
2Loss of energy
If oxygen enriched air is used to increase flame temperature and heat transfer efficiency, then heat transfer efficiency is improved, but local heating occurs making uniform heating difficult
Solution Approach 1:
Different regions of the burner tip are designed with different outlet configurations and ejection angles. The central outlet and peripheral outlets have different orientations and spacing, creating localized variations in flame characteristics that collectively achieve uniform overall heating while maintaining high temperature zones for efficiency.
Solution Approach 2:
The system utilizes self-induced oscillation to dynamically vary the flame position and intensity over time. This dynamic behavior prevents stationary high-temperature zones from causing localized overheating, while the oscillation pattern ensures all areas receive periodic exposure to high heat flux, achieving both efficiency and uniformity.
3Device complexity
If a linear flame shape is used to simplify burner structure, then device complexity is reduced, but one point of the object tends to be locally heated making uniform heating difficult
Solution Approach 1:
The burner tip is segmented into multiple fluid ejection outlets arranged in specific geometric patterns with defined angular relationships. This segmentation creates a distributed flame structure that covers a broader area and prevents localized heating, while the overall burner structure remains relatively simple and compact.
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 uniform heating with excellent heat transfer efficiency even at positions away from the tip surface of the burner, preventing local heating and ensuring consistent temperature distribution.
Implementation Method 1
utilizing a self-induced oscillation phenomenon of a jet flow to oscillate the flame
Implementation Method 2
increasing the flame temperature using an oxygen enriched air as an oxidant
Data Source
Figure 1~2
Figure 3~4B
Figure 5A~5B
AI summary
An object of the present invention is to provide an oxygen enriched burner which can uniformly heat with excellent heat transfer efficiency even at a position away from the burner, when heating an object to be heated by a self-oscillating flame, and a method for heating using an oxygen enriched burner, and the present invention provides an oxygen enriched burner including a central fluid discharge outlet (2) and a pair of first peripheral fluid discharge outlet (3A) and a pair of second peripheral fluid discharge outlets (3B), which are arranged opposite to each other around the central fluid outlet (2), a pair of openings (42a, 42b) are provided in side walls (41) of a fluid ejection flow path (4) on the upstream side of the central fluid discharge outlet (2), the distance between a pair of side walls (43a, 43b) gradually expands toward the downstream side, a pair of the second peripheral fluid outlet (3B) are arranged so as to be orthogonal to the direction facing the openings (42a, 42b) and sandwich the central fluid outlet (2) therebetween, an angle γ° formed by the central axis of the central fluid outlet (2) and the central axis of the second peripheral fluid outlets (3B) satisfy a predetermined relationship, an outlet width (D1) between the side walls (41) of the central fluid outlet (2), and an outlet width (D2) of the second peripheral fluid outlets (3B) in a direction along the outlet width satisfy a predetermined relationship.