Printed Induction Coil Board With Insulated Vessel Detection Layers
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Solution Overview
Problem
Induction heating devices face challenges in efficiently integrating heating coils and vessel detection coils on a board while maintaining insulation and reducing manufacturing complexity, particularly when large currents are involved.
Innovation Solution
A stacked, hot-pressed heating coil board with patterned heating and vessel detection coils, insulated by a thin resin-based layer, allows for efficient integration and reduced interference, enabling precise detection and control of cooking vessels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If heating coils and vessel detection coils are printed on stacked boards, then assembly efficiency is improved and manufacturing complexity is reduced, but insulation between coils becomes more difficult to maintain
Solution Approach 1:
The heating coil board is divided into multiple stacked boards, with each board containing specific coil patterns (heating coils on some boards, vessel detection coils on others). This segmentation allows for optimized insulation design between different coil types while maintaining manufacturing efficiency.
Solution Approach 2:
An insulating layer is introduced as an intermediary component between the heating coil pattern layers and the vessel detection coil layer. This insulating layer acts as a mediator that prevents electrical interference and maintains insulation reliability while enabling the stacked board structure.
2Length of moving object
If the insulating layer thickness is reduced to 140 μm or less, then the overall board thickness is reduced and assembly efficiency is improved, but the insulation reliability may be compromised
Solution Approach 1:
The thickness parameter of the insulating layer is optimized to be 140 μm or less. This parameter change reduces the overall board thickness and improves assembly efficiency while maintaining sufficient insulation reliability through proper material selection and design.
3Productivity
If heating coils are printed on boards instead of using traditional wound coils, then productivity is improved and manufacturing costs are reduced, but manufacturing precision requirements increase
Solution Approach 1:
The traditional mechanical winding process for creating heating coils is replaced with a printing process that deposits conductive material directly onto the board in coil patterns. This substitution improves productivity and reduces manufacturing complexity while the insulating layer helps maintain electrical performance.
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 design enhances assembly efficiency, reduces manufacturing costs, and improves durability by minimizing interference between coils, while allowing for precise detection and control of cooking vessels.
Implementation Method 1
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
Implementation Method 2
heating coils printed thereon
Implementation Method 3
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
Implementation Method 4
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
Data Source
Figure 1A
Figure 1B
Figure 2
AI summary
According to an embodiment of the present disclosure, the disclosed induction heating device comprises a container detection coil layer patterned by printing a plurality of container detection coils in order to detect a cooking container. The induction heating device according to one embodiment of the present invention may comprise: a plurality of heating coil pattern layers patterned by printing heating coils; and an insulating layer positioned between the plurality of heating coil pattern layers and a container detection coil layer so as to insulate the plurality of heating coil pattern layers and the container detection coil layer, wherein the container detection coil layer, the plurality of heating coil pattern layers, and the insulating layer can be laminated and pressed so as to form a heating coil board.