Double-Wall Wire Feeder Structure for Rugged Cooling and Low Weight
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Solution Overview
Problem
Conventional portable welding devices are not sufficiently rugged for harsh environments, leading to damage and reduced portability due to their weight, and they lack effective cooling and easy maintenance features.
Innovation Solution
A portable wire feeder with a double-walled housing structure, where the exterior is more flexible and resilient, and the interior is more rigid, allowing for efficient heat dissipation and insulation, along with a closed-loop air circulation system to prevent contamination and enhance cooling, and features like interchangeable cable connectors and easy-access storage compartments for consumables.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the housing is made more rugged to withstand harsh environments, then durability is improved, but weight increases reducing portability
Solution Approach 1:
The housing is divided into two separate walls: an exterior housing wall and an interior housing wall. This segmentation allows each wall to be optimized independently - the exterior wall for durability and the interior wall for structural integrity - while together they provide protection without requiring excessive weight from a single monolithic structure.
Solution Approach 2:
The patent employs different materials for the exterior and interior housing walls. The exterior housing wall is made from a more durable material suitable for withstanding harsh environments, while the interior housing wall uses a different material optimized for structural support. This composite approach enables durability enhancement without proportionally increasing overall weight.
2Temperature
If cooling openings are added to dissipate heat from internal components, then cooling efficiency is improved, but contamination from pollutants and water ingress increases
Solution Approach 1:
The interstitial space between the exterior and interior housing walls serves as an intermediary cooling chamber. Coolant can flow through this space to dissipate heat from internal components without requiring direct openings from the external environment, thereby maintaining cooling efficiency while preventing pollutant and water ingress into the component housing.
Solution Approach 2:
The cooling system is nested within the double-wall structure itself. The interstitial space between the two housing walls functions as an integrated cooling passage, eliminating the need for separate external cooling openings and thus preventing contamination while achieving effective heat dissipation.
3Ease of repair
If access doors are made easily removable for maintenance, then ease of repair is improved, but structural integrity and protection of internal components worsens
Solution Approach 1:
The access door assembly is segmented into multiple components: the door itself, removable fasteners, and internal component trays. This segmentation allows the door to be easily removed and reattached for maintenance while the segmented internal structure maintains structural integrity when assembled, protecting internal components during normal operation.
Solution Approach 2:
Internal components are pre-organized on removable trays or mounts within the housing. This preliminary arrangement allows maintenance personnel to quickly access and replace specific components by simply removing the access door and the relevant tray, without needing to disassemble the entire housing structure, thus maintaining both ease of repair and structural integrity.
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 solution enhances the durability and portability of the wire feeder, improves cooling efficiency, and facilitates easier maintenance and repair, addressing the issues of harsh environment compatibility and operational reliability.
Implementation Method 1
The exterior housing structure may be constructed from a more flexible and resilient material when compared to the interior housing structure... enables the exterior housing structure to withstand being damaged from the harsh environments
Implementation Method 2
The double-wall structure also enables the housing to be rigid without being constructed from heavy and bulky materials... allows for efficient heat dissipation and insulation
Data Source
Figure 1
Figure 2A
Figure 2B
AI summary
A wire feeder includes an exterior housing and in interior housing that creates an interstitial spaced that is disposed between the exterior and interior housing. This housing structure reduces weight of the wire feeder while maintaining the structural rigidness required of a wire feeder. This housing structure also promotes improved cooling features for the wire feeder and the components disposed within the wire feeder. The exterior housing may be constructed of a materials that reduces the likelihood of being damaged. The wire feeder may be further equipped with a strain relief device for the incoming supply cables, and an interchangeable cable connector. The wire feeder may also be equipped with removable wire guides for the wire feeder mechanism that are toolless. The wire feeder may be equipped with accessory storage and attachment features, as well as a cost reduced repositionable control panel.