Heating Coil Segmentation for Uniform Induction Heating
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional heating coils for induction heating exhibit uneven current distribution and heat treatment due to current flowing along the shortest path, leading to biased heating and poor heat treatment quality, especially as the width increases.
Innovation Solution
A heating coil design featuring a set of heating conductors arranged on either side of a work with multiple connecting conductors extending in different directions to connect the heating conductors, ensuring even current distribution and preventing biased current flow, thereby enabling even heat treatment across the width of the work.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single connecting conductor is used to connect heating conductors, then the structure is simple, but current flow becomes biased toward the inside and heat treatment becomes uneven
Solution Approach 1:
The single connecting conductor is segmented into multiple connecting conductors (first, second, third, and fourth connecting conductors) that connect different ends of the heating conductors. This segmentation distributes the current flow paths, preventing current concentration at the center and achieving uniform heat treatment across the workpiece width.
2Area of stationary object
If the width of heating conductors is increased to cover more heating area, then the heating coverage is improved, but current distribution becomes more biased and heat treatment uniformity deteriorates
Solution Approach 1:
The connecting conductors are arranged in multiple directions (different spatial dimensions) to connect the heating conductors. This multi-dimensional arrangement creates multiple current flow paths that distribute current evenly across the widened heating conductor structure, maintaining heat treatment uniformity even as heating coverage increases.
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 design ensures even induction heating and heat treatment by preventing intensive current flow at connected portions, resulting in improved heat treatment quality and uniformity across the work's width.
Implementation Method 1
a heating coil to perform induction heating on a plurality of sides of a work
Implementation Method 2
power is fed through heating conductors 41 and the connecting conductor 42 to perform partial induction heating
Data Source
AI summary
In preferred embodiments, a heating coil is provided that includes at least a set of heating conductors, one of which is arranged at a side of a work and the other one is arranged at an opposite side of the work. In addition, a plurality of connecting conductors are provided to connect an end of one of the heating conductors with an end of the other heating conductor, wherein each of the heating conductors is connected with at least two connecting conductors. The connecting conductors extend from an end of each of the heating conductor in a different direction from each other. In the preferred embodiments, the heating coil has a simple structure that enables an even heat treatment to a work in a width direction.