Welding Torch Forced Air Cooling Handle Temperature
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Solution Overview
Problem
Air-cooled welding or cutting torches face limitations in achieving high welding or cutting performance without increasing handle temperature, which affects handling and efficiency, and existing solutions are either complex or costly.
Innovation Solution
Incorporating a conveying device, such as a fan or compressor, within the handle of the torch to force ambient air through a cooling duct, enhancing cooling capacity without increasing handle temperature, and utilizing this setup to operate with higher power or reduce material costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If air-cooled welding torch is operated at higher output, then welding or cutting performance is improved, but handle temperature increases
Solution Approach 1:
The cooling system is segmented into multiple independent cooling ducts (first cooling duct and second cooling duct) that can operate independently or together. The first cooling duct cools the burner nozzle, while the second cooling duct cools the handle, allowing targeted cooling of different hot spots to enable higher output without handle temperature increase
Solution Approach 2:
The conveying device (fan or compressor) is pre-positioned within the handle structure, and cooling ducts are pre-routed through the handle interior before operation. This preliminary arrangement ensures immediate forced convection cooling is available when high output is engaged, preventing handle temperature rise before it occurs
2Temperature
If liquid-cooled device is used, then cooling capacity is improved, but device complexity and cost increase
Solution Approach 1:
The patent replaces the liquid cooling system (which requires pumps, coolant tanks, and heat exchangers) with a forced air convection system using a conveying device (fan or compressor). This substitution maintains effective cooling capacity while eliminating the complex liquid circulation infrastructure, resulting in a simpler device structure and lower cost
Solution Approach 2:
The conveying device is powered by the welding torch's own electrical system, and the cooling air is drawn from the ambient environment through openings in the handle. The system uses readily available resources (ambient air and onboard electricity) rather than requiring external cooling infrastructure, simplifying the overall system design
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 a substantial increase in welding or cutting capacity, with outputs enhanced by over 10% or reduced material expenditure, while maintaining handle temperature within safe limits, and enabling continuous or intermittent cooling for improved performance.
Implementation Method 1
a conveying device, in particular a fan or a compressor, is provided, which conveys ambient air as cooling air through at least one cooling duct of the welding or cutting torch
Data Source
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AI summary
An air-cooled welding or cutting torch has a feed device (5), in particular a fan (6) or a compressor, which takes in ambient air as cooling air and feeds it for cooling purposes through at least one cooling channel (7).