Effluent Removal Tubes with Multiple Openings for Furnace Gas
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Solution Overview
Problem
Existing effluent extraction systems in reflow furnaces face inefficiencies due to the deposition of sticky residues on surfaces, which leads to mechanical imbalances, reduced performance, and increased maintenance costs, as the effluent-laden gas travels long distances before being drawn off, allowing residues to adhere and block components.
Innovation Solution
A system featuring tubes with multiple openings and a trunkline network within the furnace's heating zones, allowing for efficient withdrawal of effluent-laden gas through strategically positioned extraction ports and valves, minimizing condensation and deposition, and optimizing gas flow to maintain thermal uniformity and reduce operational costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If effluent-laden gas is drawn from the process blower plenums, then flux extraction is achieved, but residues deposit on blower wheels and perforated discharge plates causing mechanical imbalance and flow property changes
Solution Approach 1:
The extraction system is segmented into multiple independent extraction ports distributed throughout the process chamber, allowing localized effluent removal without requiring large volumes of gas to travel through the plenums. This reduces residue accumulation on blower components while maintaining effective flux extraction.
Solution Approach 2:
The invention extracts effluent-laden gas directly from multiple locations within the process chamber using tubes with multiple openings, removing the harmful travel distance through plenums. By taking out the gas stream at its source rather than from the plenums, residues never have the opportunity to deposit on blower wheels or discharge plates.
2Productivity
If gas is drawn from the plenums, then flux removal is achieved, but the flow balance within the plenum is upset and performance is altered
Solution Approach 1:
The extraction system implements local quality by placing extraction ports at specific locations within the process chamber where effluent is generated, rather than relying on centralized plenum extraction. This localized approach removes flux at its source without disrupting the overall flow balance of the plenums, as only small portions of gas are extracted at each location.
3Productivity
If effluent-laden gas travels a significant distance through the furnace, then flux extraction is achieved, but effluent residue adheres to surfaces causing deposition and yield loss
Solution Approach 1:
The invention takes out effluent-laden gas at multiple points within the process chamber using tubes with multiple openings, eliminating the long travel distance through the furnace. By extracting the gas stream locally at its source rather than allowing it to traverse the entire furnace volume, residues never have the opportunity to adhere to surfaces, preventing deposition and yield loss.
Solution Approach 2:
The extraction system segments the gas flow path into multiple short segments by placing multiple extraction ports throughout the process chamber. This segmentation reduces the travel distance for each portion of gas, minimizing the opportunity for residue deposition while maintaining comprehensive flux extraction coverage.
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 system effectively reduces effluent deposition, maintains furnace cleanliness, extends maintenance intervals, and improves thermal uniformity by efficiently extracting and processing effluent-laden gas, thereby reducing operational costs and extending the time between furnace shutdowns.
Implementation Method 1
at least one tube having a body including an interior passageway enabling fluidic flow therethrough; and a plurality of openings disposed along a length of the body in fluidic communication with the interior passageway
Data Source
AI summary
Systems, devices and methods for effluent or flux removal from a gas are disclosed. In one aspect the system includes at least one tube having a body including an interior passageway enabling fluidic flow therethrough; and a plurality of openings disposed along a length of the body in fluidic communication with the interior passageway, thereby enabling withdrawal of the gas laden with the effluent exterior to the at least one tube through the plurality of openings into the interior passageway of the at least one tube.