Multi-Output Welding Power Switching for Safe Process Selection
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing multi-process welding systems require users to manually select and switch between different output terminals, which can be inconvenient and unsafe due to unused terminals being hot, and often necessitate changing cables or setting switches, complicating the process switching process.
Innovation Solution
A welding system with a process selection input, a shared power circuit, and controllable switches that automatically route welding type power to the correct output terminal based on user input, ensuring only one terminal receives power at a time, thereby eliminating the need for manual switching and reducing safety hazards.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple output terminals are provided for different welding processes, then the system can support multiple welding processes simultaneously, but unused terminals remain hot and create safety hazards
Solution Approach 1:
The patent implements dynamic switching of output terminals using controllable switches (transistors Q1-Q4) that are actively controlled based on the selected welding process. The switches dynamically connect or disconnect terminals from the hot output, ensuring that only the currently selected terminal remains hot while others are disconnected and cooled, thereby maintaining multi-process capability while eliminating safety hazards from hot unused terminals
Solution Approach 2:
The patent introduces intermediate switching components (transistors Q1-Q4 and resistors R1-R4) between the hot output and the multiple terminals. These intermediaries act as controlled gates that selectively connect or disconnect terminals from the power source, allowing the system to maintain multiple output capabilities while preventing unauthorized or unintended access to hot terminals through the switching mechanism
2Object-affected harmful factors
If manual switching between output terminals is required, then the system can control which terminal is active, but the operation becomes inconvenient and complex
Solution Approach 1:
The patent implements self-service automatic switching where the system automatically selects and activates the appropriate output terminal based on the welding process selection without requiring manual intervention. The controller automatically controls the switching components (Q1-Q4) to connect the correct terminal to the hot output, eliminating the need for users to manually switch terminals and thereby improving ease of operation while maintaining controlled activation
3Device complexity
If a shared output terminal is used for multiple processes, then cable changes are avoided, but the user must manually change connections or settings
Solution Approach 1:
The patent implements dynamic terminal assignment where each terminal is dynamically assigned to specific welding processes through controlled switching. The system automatically routes the hot output to the appropriate terminal based on the selected process, eliminating the need for users to manually change cable connections or reconfigure settings, thereby maintaining cable management simplicity while improving ease of operation through automatic process-specific routing
Data Source
AI summary
A method and apparatus for providing welding type power on one of at least two output terminals is disclosed. Input power is received and welding type power is derived and provided by a shared power circuit. The welding type power is provided across a shared terminal and only two process terminals in response to a desired process. The desired process can be set bu user input, feedback, or sensing working connections. The process terminal is selected by selectively opening and closing at least two controllable switches.