Induction Heating Working Coil Fixing Structure
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Solution Overview
Problem
The existing induction heating devices with multiple working coils face challenges in manufacturing cost and assembly time due to the increased number of components required for fixing the working coils, which complicates the replacement process and can lead to issues like wire uncoiling or ferrite core breakage during separation.
Innovation Solution
The induction heating device fixes the working coil directly to a base plate without separate coil-fixing components, using an annularly-coiled conductive wire with an annular coil hole, a ferrite core with a core hole, and an indicator board support with hooks that couple into the ferrite core's coupling groove, allowing for easy separation and reducing the number of components needed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If separate coil-fixing components are used to fix the working coil, then the working coil is securely fixed, but the number of components increases leading to higher manufacturing cost and longer assembly time
Solution Approach 1:
The patent integrates the coil-fixing function directly into the base plate by forming protrusions that extend into the working coil's coil hole. This merging of the fixing structure with the base plate eliminates separate coil-fixing components, reducing the total number of parts while maintaining secure fixation of the working coil.
Solution Approach 2:
The base plate is designed to serve multiple functions: it provides the structural foundation, facilitates heat dissipation, and incorporates protrusions that perform the coil-fixing function. This multi-functionality reduces the need for additional dedicated fixing components, thereby lowering manufacturing cost and assembly complexity.
2Strength
If multiple separate fixing components are used, then the working coil is securely fixed, but the replacement process becomes complicated and may cause wire uncoiling or ferrite core breakage
Solution Approach 1:
By integrating the fixing protrusions directly into the base plate structure, the patent creates a unified fixing system that simplifies the replacement process. The working coil can be easily removed by detaching it from the protrusions without needing to manipulate multiple separate fixing components, reducing the risk of wire uncoiling or ferrite core breakage during maintenance.
3Strength
If more fixing components are used for multiple working coils, then each coil is securely fixed, but the manufacturing cost and assembly time increase
Solution Approach 1:
The patent employs a standardized base plate design with multiple protrusions that can accommodate multiple working coils using the same fixing mechanism. This unified approach allows for consistent installation procedures across all coils, significantly reducing assembly time compared to using different fixing components for each coil.
Solution Approach 2:
The base plate's protrusions serve as universal fixing elements for all working coils in the system. This standardized multi-functional fixing structure enables efficient assembly operations and simplifies manufacturing processes, thereby improving productivity while maintaining secure fixation for multiple coils.
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 solution simplifies the working coil fixing structure, reduces material and machining costs, and facilitates easier replacement of components, thereby minimizing the risk of damage during maintenance.
Implementation Method 1
When power is applied to the induction heating device, a high-frequency voltage of a predetermined magnitude is applied to the working coil. As a result, an inductive magnetic field is generated around the working coil disposed in the induction heating device. When the flux of the inductive magnetic field passes through a bottom of the loaded object containing the metal loaded on the induction heating device, an eddy current is generated inside of the bottom of the loaded object.
Implementation Method 2
In the inductive heating method, an eddy current may be generated in the loaded object made of metal based on a high-frequency power of a predetermined magnitude applied to a working coil. In this method, the loaded object may be heated by the eddy current generated based on magnetic field around the working coil.
Data Source
AI summary
An induction heating device includes: a working coil that includes an annularly-coiled conductive wire and that defines an annular coil hole at a central region of the working coil; a ferrite core that is located vertically below the working coil and that defines a core hole at a central region of the ferrite core corresponding to the annular coil hole; and an indicator board support that is located vertically below the ferrite core. The indicator board support includes a hook that extends to the core hole in a vertical direction and that is configured to insert into the core hole.