Gas Mixing Torch Tip Segmentation for Cooling
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Solution Overview
Problem
Premixed gas cutting torches face limitations in tip longevity and design compactness, leading to increased costs and heat stress on the torch.
Innovation Solution
The design includes a tip assembly with a mixer that directs specific gas flows through a central and outer passageway system, enhancing cooling by increasing the surface area contact between gases, allowing for a more compact and longer-lasting tip.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If a premixed tip design is used, then the torch can be more compact, but the tip lifespan is reduced and heat stress increases
Solution Approach 1:
The tip is divided into multiple passageways (central, intermediate, outer) that segment the gas flow paths. This segmentation allows for optimized cooling distribution across different tip regions, enabling compact design while maintaining lifespan through improved thermal management
Solution Approach 2:
Different regions of the tip receive different gas flows through the segmented passageway system. The central passageway delivers mixed gases to the combustion zone, while intermediate and outer passageways provide cooling flows to specific tip regions, creating local quality variations that optimize both compactness and durability
2Volume of moving object
If a premixed tip design is used, then the torch design is more compact, but heat stress on the torch increases
Solution Approach 1:
The cooling system is segmented into multiple passageways that distribute cooling gases to different tip regions. This segmentation enables comprehensive cooling coverage in a compact tip, reducing heat stress without increasing overall tip volume
Solution Approach 2:
Cooling gases act as intermediary substances that transfer heat away from the tip. The multi-passageway system optimizes the delivery of these intermediary cooling flows, allowing compact design while effectively managing heat stress through enhanced cooling mediation
3Duration of action of stationary object
If postmixed tips are used, then tip lifespan is increased and heat stress is reduced, but the design is less compact and material usage increases
Solution Approach 1:
The tip incorporates local quality variations through differentiated passageway configurations. Specific regions receive optimized cooling flows matching their thermal demands, allowing the tip to achieve postmixed-level durability while maintaining compact premixed dimensions through localized thermal management
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 enhanced cooling effect prolongs the tip's lifespan, reduces the tip's size, and decreases heat stress on the torch, similar to postmixed tips, while maintaining a compact design and reducing material usage.
Implementation Method 1
preheat oxygen and the fuel gas are mixed and ignited to provide heat to the workpiece
Implementation Method 2
Turbulence in the discharged streams mixes the oxygen and fuel gas before ignition occurs
Implementation Method 3
additional oxygen, commonly referred to as cutting oxygen, is added to react with the heated workpiece. This reaction of the cutting oxygen with the heated workpiece initiates sufficient heat and momentum of the gases to initiate a cutting process
Implementation Method 4
The design includes a tip assembly with a mixer that directs specific gas flows through a central and outer passageway system, enhancing cooling by increasing the surface area contact between gases
Data Source
AI summary
A method of directing gas flows in a gas torch includes directing a flow of a first gas and a flow of a second gas to a mixer central gas passageway of a mixer and directing the flow of the mixed first and second gases from the mixer to an axial passageway of a tip. The method further includes directing a flow of a third gas to an outer passageway of the tip, directing the flow of the third gas inwardly through at least one intermediate gas passageway, and then directing the flow of the third gas to a tip central gas passageway of the tip. Finally, the flow of the mixed first and second gases and the flow of the third gas are directed distally through a distal portion of the tip.