Stacked Induction Heating Board Insulation Design
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Solution Overview
Problem
Existing induction heating devices face challenges in efficiently manufacturing heating coils with high current carrying capacity while minimizing interference with vessel detection coils, and require appropriate insulation design for stacked heating coil boards.
Innovation Solution
The induction heating device incorporates a stacked, hot-pressed heating coil board with a vessel detection coil layer, multiple heating coil pattern layers, and an insulating layer, where the insulating layer has a thickness of 140 μm or less and includes a resin content of 60% to 80%, to ensure proper insulation and minimize interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the insulating layer thickness is increased to improve insulation between heating coil layers, then insulation performance is improved, but the overall device size and complexity increase
Solution Approach 1:
The patent specifies a precise insulating layer thickness parameter of 140 μm or less, optimizing the balance between insulation performance and device compactness. This parameter change resolves the contradiction by establishing a maximum thickness that provides sufficient insulation while preventing excessive device size increase
Solution Approach 2:
The insulating layer is formed as a composite structure with resin content controlled at 60% to 80%, creating a material composition that achieves adequate insulation properties without requiring excessive thickness. This composite material approach allows the insulating layer to provide necessary electrical isolation while maintaining a compact overall device structure
2Reliability
If the resin content in the insulating layer is increased to improve insulation properties, then insulation effectiveness is improved, but the mechanical strength and thermal stability may deteriorate
Solution Approach 1:
The patent establishes a resin content parameter range of 60% to 80% in the insulating layer, optimizing the balance between insulation effectiveness and mechanical strength. This parameter optimization ensures that the insulating layer provides sufficient electrical isolation while maintaining adequate structural integrity and thermal stability for the heating device
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 enhances the manufacturing efficiency and durability of the induction heating device by reducing interference between the heating and vessel detection coils, while maintaining high energy efficiency and stability.
Implementation Method 1
an insulating layer between the plurality of heating coil pattern layers and the vessel detection coil layer, to insulate the plurality of heating coil pattern layers from the vessel detection coil layer
Implementation Method 2
induction heating is a method of generating an eddy current in an object to be heated including a metal component by using a magnetic field generated around a coil when high-frequency power of a certain magnitude is applied to the coil
Implementation Method 3
generating an eddy current in an object to be heated including a metal component by using a magnetic field generated around a coil
Implementation Method 4
a vessel detection coil layer that is patterned with a plurality of vessel detection coils printed thereon to detect a cooking vessel placed on the induction heating device
Data Source
AI summary
An induction heating device including a vessel detection coil layer that is patterned with a plurality of vessel detection coils printed thereon to detect a cooking vessel placed on the induction heating device; a plurality of heating coil pattern layers that are patterned with heating coils printed thereon; and an insulating layer between the plurality of heating coil pattern layers and the vessel detection coil layer, to insulate the plurality of heating coil pattern layers from the vessel detection coil layer, wherein the vessel detection coil layer, the plurality of heating coil pattern layers, and the insulating layer are in a stacked, hot-pressed heating coil board in which a thickness of the insulating layer is 140 μm or less.