Welding Fluid Mixing With Proportional Valves for Consistent Ratios
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Solution Overview
Problem
Existing welding-type power supplies require manual adjustment of fluid flow rates and struggle with inconsistent fluid mixture compositions due to the need for external mixers and pre-mixed reservoirs, which can be burdensome and costly.
Innovation Solution
Incorporating electrically controllable proportional valves within the power supply to mix fluids from multiple reservoirs, allowing for automatic flow rate adjustment and consistent mixture composition without external equipment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If manual adjustment of fluid flow rates is used, then device complexity is reduced, but manufacturing precision of fluid mixture composition deteriorates
Solution Approach 1:
The patent replaces manual mechanical adjustment of fluid flow rates with electrically controllable proportional valves. These valves use electrical signals to precisely control the mixing ratio of fluids from multiple reservoirs, eliminating the need for manual mechanical adjustment while achieving consistent fluid mixture composition. The control circuitry receives signals from the welding controller and automatically adjusts valve positions to maintain precise mixing ratios.
2Manufacturing precision
If external mixers and pre-mixed reservoirs are used, then manufacturing precision of fluid mixture composition is improved, but device complexity increases
Solution Approach 1:
The patent merges the fluid mixing function directly into the welding power supply unit by integrating proportional valves and control circuitry. This eliminates the need for separate external mixers and pre-mixed reservoirs, as the system can now mix fluids internally according to controlled ratios. The mixing function is combined with the power supply, wire feeder, and welding controller into a single integrated system.
Solution Approach 2:
The system performs self-service by automatically controlling fluid mixing through electrically controllable proportional valves that respond to signals from the welding controller. The control circuitry within the power supply unit automatically adjusts valve positions to maintain precise mixing ratios without requiring external mixing equipment or manual intervention, making the system self-sufficient for fluid mixture preparation.
3Adaptability or versatility
If multiple fluid reservoirs are connected, then adaptability for different welding processes is improved, but device complexity increases
Solution Approach 1:
The patent implements multi-functionality by enabling the welding power supply to connect to and mix fluids from multiple reservoirs (e.g., first reservoir for shielding gas, second reservoir for compressed air) using electrically controllable proportional valves. The system can adapt to different welding processes by adjusting the mixing ratios of different fluids, providing universal applicability across various welding applications while maintaining a single integrated device architecture.
Data Source
AI summary
Methods and apparatus are disclosed relating to mixing fluids in welding-type equipment. In some examples, a welding-type power supply (and/or wire feeder) may include multiple fluid paths through which to provide fluid from multiple fluid reservoirs to multiple welding-type tools. The power supply may be configured to automatically control fluid flow rates through the fluid paths via proportional valves. Further, the welding-type power supply may be configured to allow and/or prohibit mixing of fluids from different flow paths via control of various valves.