Single-Source Welding Power Circuit for Integrated Preheating
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Solution Overview
Problem
Conventional welding systems require multiple power sources and complex control circuitry for preheating and welding, increasing complexity and cost, whereas the need exists for a single power source that can efficiently provide both welding and preheating power.
Innovation Solution
A welding power source with integrated power conversion circuitry that converts a single input power to both welding and preheating power, utilizing a wire feed assembly and control circuitry to manage the output, allowing for reduced complexity and cost by providing both functions from a single unit.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple power sources are used for preheating and welding, then preheating and welding functions are provided, but device complexity and cost increase
Solution Approach 1:
The patent combines preheating power supply and welding power supply into a single integrated power source. The power conversion circuitry is configured to convert input power to both preheating power and welding power, eliminating the need for separate power sources and reducing overall system complexity while maintaining both functions.
Solution Approach 2:
The single power source is designed with universal functionality to provide both preheating and welding operations. The power conversion circuitry can selectively output preheating power or welding power based on operational requirements, making the device multi-functional and adaptable to different welding process needs.
2Device complexity
If a single power source provides both welding and preheating power, then device complexity and cost are reduced, but power conversion capability must be enhanced
Solution Approach 1:
The power conversion circuitry is designed with universal capability to perform multiple power conversion functions. It can convert input power to preheating power for wire preheating operations or to welding power for arc welding operations, making the single power source adaptable to different operational modes without requiring separate dedicated power supplies.
Solution Approach 2:
The power conversion circuitry dynamically adjusts its output based on operational requirements. The system can switch between providing preheating power and welding power as needed, with the control circuitry managing the dynamic power conversion to meet the specific demands of each operational phase.
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 solution enables efficient wire preheating, reducing heat input, increasing deposition, and minimizing hydrogen in the weld, while simplifying the welding process by using a single power source for both welding and preheating, thereby improving operational efficiency and reducing equipment costs.
Implementation Method 1
power conversion circuitry configured to convert a first portion of the input power to welding power and output the welding power to a weld circuit, and convert a second portion of the input power to preheating power and output the preheating power to a preheater
Implementation Method 2
convert a second portion of the input power to preheating power and output the preheating power to a preheater
Data Source
AI summary
An example welding power supply includes: a power input configured to receive alternating current (AC) input power; and power conversion circuitry configured to: convert a first portion of the input power to welding power; output the welding power to a weld circuit; convert a second portion of the input power to preheating power; and output the preheating power to a preheater.