Transverse Flux Coil-Core Layout for Uniform Thin Sheet Heating
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Solution Overview
Problem
Conventional transverse flux induction heating devices face challenges in simultaneously suppressing core temperature increase and maintaining alternating magnetic field magnitude for efficient heating of thin conductor sheets, leading to uneven temperature distribution and reduced heating efficiency.
Innovation Solution
The device employs a pair of coils with cores arranged in a specific configuration, including partial cores and bridge cores, to maintain magnetic coupling and alternating magnetic field strength while reducing core temperature through strategic core division and magnetic coupling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If the core is divided into multiple partial cores to reduce core temperature, then core temperature is reduced, but the alternating magnetic field magnitude decreases
Solution Approach 1:
The core is divided into multiple partial cores (first partial core, second partial core, third partial core, fourth partial core) arranged in the width direction. This segmentation reduces the core temperature by distributing the heat generation across multiple smaller core segments while maintaining the overall magnetic field strength through strategic positioning and magnetic coupling between the partial cores.
2Temperature
If a transverse flux induction heating device is used to heat thin conductor sheets, then heating capability is improved, but uneven temperature distribution occurs in the width direction
Solution Approach 1:
The patent applies different structural configurations to different regions of the core. The first and second partial cores are positioned on one side of the conductor sheet while the third and fourth partial cores are positioned on the other side, creating localized magnetic field distributions that compensate for edge effects and achieve uniform temperature distribution across the width direction of the thin conductor sheet.
Solution Approach 2:
The patent transitions from a single-core configuration to a multi-dimensional arrangement of partial cores on both sides of the conductor sheet. By positioning partial cores in the width direction and utilizing magnetic coupling across the conductor sheet thickness, the device achieves uniform heating in the width direction while maintaining effective heating capability.
3Temperature
If the core is divided into partial cores with intervals, then core temperature is reduced through heat dissipation, but magnetic coupling between cores is weakened
Solution Approach 1:
The core is segmented into multiple partial cores with intervals between them, allowing heat dissipation and reduced core temperature. The intervals prevent excessive heat accumulation while the magnetic coupling between adjacent partial cores maintains the necessary magnetic field strength and reliability for effective induction heating.
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 achieves uniform temperature distribution across the conductor sheet and maintains heating efficiency by balancing core temperature and magnetic field strength, addressing the limitations of prior art.
Implementation Method 1
The induction heating device imposes an alternating magnetic field generated from a coil on a conductor sheet. Accordingly, an eddy current is induced in the conductor sheet by electromagnetic induction. The conductor sheet is heated by Joule heat based on the eddy current.
Implementation Method 2
The conductor sheet is heated by Joule heat based on the eddy current.
Implementation Method 3
the set of cores has at least one bridge core capable of being magnetically coupled to at least two partial cores out of the partial cores, and the bridge core is arranged on the back side of the partial cores
Data Source
AI summary
Coils (230, 330) are respectively arranged on a front side and a rear side of a planned conveyance plane (CP). Main cores (211, 311), edge cores (212, 213, 312, 313), and bridge cores (220a, 220b, 320a, 330b) are arranged with respect to the coils (230, 330). The bridge cores (220a, 220b, 320a, 330b) are arranged on a back side of the main cores (211, 311) and the edge cores (212, 213, 312, 313). The main cores (211, 311) and the edge cores (212, 213, 312, 313) can be magnetically coupled by using the bridge cores (220a, 220b, 320a, 320b).