Segmented Induction Coil for Uniform Plate Heating
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Solution Overview
Problem
The existing induction heating methods for plate-like members with three-dimensional structures face challenges in achieving uniform heating due to varying cross-sectional lengths of the coils, leading to current concentration in regions with lower resistance, resulting in non-uniform heating of the plate-like member.
Innovation Solution
The induction heating apparatus and method involve dividing each plate-like coil into multiple turns along the direction of current flow to match the number of surfaces in the plate-like member's cross-section, ensuring equal current flow through each coil, and using a tubular coil to connect these divided coils in series, which helps in maintaining consistent resistance and uniform heating across the plate-like member.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If a plate-like coil is used for induction heating of a plate-like member with three-dimensional structure, then the heating coverage is improved, but the current distribution becomes non-uniform due to varying cross-sectional lengths
Solution Approach 1:
The plate-like coil is divided into multiple turns along the direction of current flow. Each turn corresponds to a specific surface of the plate-like member in cross-section. This segmentation ensures that current is distributed uniformly across different regions of the coil, preventing current concentration in low-resistance regions and achieving uniform heating across the entire plate-like member including regions with varying cross-sectional lengths
2Area of stationary object
If the coil cross-sectional length varies to match the plate-like member shape, then the heating coverage is improved, but the resistance varies causing current concentration
Solution Approach 1:
The coil is segmented into multiple turns where each turn corresponds to a specific cross-sectional surface of the plate-like member. This segmentation allows the current to be distributed across multiple paths rather than concentrating in single low-resistance regions, achieving both shape matching and uniform current distribution
Solution Approach 2:
By configuring the coil as multiple turns with corresponding surfaces, the system creates equipotential conditions across different regions of the plate-like member, ensuring uniform current flow and preventing energy concentration in specific regions
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 configuration allows for uniform heating of the plate-like member by equalizing current flow and resistance across all regions, ensuring consistent heating temperatures and improving the overall heating efficiency.
Implementation Method 1
arranging a plate-like member having a three-dimensional structure in such a way that it is interposed between a pair of plate-like coils arranged to be opposed to each other and inductively heating the plate-like member
Implementation Method 2
inductively heating the plate-like member
Data Source
AI summary
An induction heating apparatus of a plate-like member for arranging a plate-like member having a three-dimensional structure so that it is interposed between a pair of plate-like coils and inductively heating the plate-like member, the pair of plate-like coils having a three-dimensional structure that corresponds to the plate-like member and being arranged to be opposed to each other. The plate-like member arranged between the pair of plate-like coils includes a plurality of surfaces in a predetermined cross section perpendicular to a current that flows through the plate-like coil pair, and each of the coils of the plate-like coil pair is divided into a plurality of turns along the direction in which the current flows for at least each of the plurality of surfaces of the plate-like member.