Welding Torch Neck Flow Space for Uniform Shielding Gas
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Solution Overview
Problem
Existing welding apparatuses face challenges with elaborate construction, inaccurate fit of hemispherical shells, dirt buildup, turbulent gas flow, and inefficient heat management, leading to suboptimal protective gas distribution and heat evacuation during thermal joining processes.
Innovation Solution
A torch neck design featuring a nozzle stock with a gas nozzle and insert, where the outer wall of the nozzle stock insert is spaced from the inner wall to form a flow space, allowing for uniform gas distribution and reduced turbulence, eliminating the need for passageway holes and enhancing thermal transfer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If passageway holes are used to guide process gas, then gas flow is achieved, but dirt buildup occurs and flow becomes turbulent
Solution Approach 1:
The invention removes the passageway holes from the nozzle stock design and replaces them with a flow space formed by the gap between the inner wall of the nozzle stock and the outer wall of the nozzle stock insert. This extraction of the problematic holes eliminates the dirt buildup issue while maintaining gas flow functionality through the alternative flow space configuration.
Solution Approach 2:
The flow space acts as an intermediary structure between the process gas inlet and the gas outlet opening. Instead of using direct passageway holes that cause turbulence and dirt accumulation, the flow space provides a smooth transitional pathway that guides gas flow uniformly without the harmful effects of narrow openings.
2Ease of manufacture
If hemispherical shells are fitted together, then structural assembly is achieved, but inaccurate fit and elaborate construction result
Solution Approach 1:
The nozzle assembly is segmented into modular components: the nozzle stock, nozzle stock insert, and gas nozzle. This segmentation allows each component to be manufactured independently with standard tolerances and assembled through simple connection methods, eliminating the need for complex hemispherical shell fitting while maintaining structural integrity.
3Adaptability or versatility
If complex multi-part construction is used, then functional requirements are met, but construction becomes elaborate and maintenance difficult
Solution Approach 1:
The invention merges multiple functions into the nozzle stock insert: it serves as both a structural component and a gas flow guide, eliminates the need for separate passageway holes, and provides a platform for the gas nozzle. This consolidation reduces the number of parts from a complex multi-component assembly to a streamlined three-component system while maintaining all necessary functional capabilities.
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 design ensures uniform process gas feeding, reduces dirt accumulation, and improves thermal transfer, resulting in better weld seam quality and efficient gas utilization.
Implementation Method 1
the outer wall of the nozzle stock insert is spaced at a distance from the inner wall of the nozzle stock to form a flow space for the stream of protective gas
Implementation Method 2
thermal energy from the flow nozzle into the rear region of the torch or torch tube
Implementation Method 3
arc welding apparatuses generally generate an arc between the workpiece and a melting or non-melting welding electrode
Data Source
AI summary
A nozzle stock (3) for a torch neck (10) of a welding device has an internal cavity (7) and at least one gas-outlet opening (8), which is in fluidic connection with the gas outlet (2) of a gas nozzle (1). A nozzle-stock insert (20) in the internal cavity (7) of the nozzle stock (3) has a front end (23) and a rear end (24), wherein the outer wall (22) of the nozzle-stock insert (20) is at a distance from the inner wall (9) of the nozzle stock (3), at least in some regions, to form a flow space (11) that is in fluidic connection with the gas-outlet opening (8) of the nozzle stock (3). A front and/or rear inflow region, which is formed by a front and/or rear gap (25, 26), is provided at the front end (23) and/or at the rear end (24) of the nozzle-stock insert (20).