Induction Heating Device Assembly Design for Multi-Coil Cooling
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Solution Overview
Problem
The assembly process of zone-free type induction heating devices is complicated due to the presence of multiple working coils, and this complexity affects the cooling performance, leading to potential damage from heat and increased repair costs.
Innovation Solution
The induction heating device features a case with a conducting wire wound working coil, a base plate, an indicator substrate support, an inverter substrate, and a resonance substrate, along with improved airflow paths and heat dissipation mechanisms, including blowing fans and mica sheets to enhance assemblability and cooling performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple working coils are installed in a zone-free type induction heating device, then the heating versatility and coverage area are improved, but the assembly process becomes complicated and cooling performance deteriorates
Solution Approach 1:
Multiple working coils are integrated onto a single aluminum bar structure, merging the mounting functions for multiple coils into one unified support component. This reduces assembly complexity by eliminating the need for separate mounting structures for each coil while maintaining the ability to heat multiple zones simultaneously.
Solution Approach 2:
The aluminum bar serves multiple functions: it acts as a structural support for mounting working coils, provides a common grounding path, and functions as a heat dissipation component. This multi-functionality reduces the overall number of components needed and simplifies the assembly process.
2Adaptability or versatility
If multiple working coils are installed in a zone-free type induction heating device, then the heating versatility and coverage area are improved, but the cooling performance deteriorates
Solution Approach 1:
A forced air cooling system using a fan is implemented to blow air through channels formed by the aluminum bar structure. This pneumatic cooling approach actively removes heat from the working coils and electronic components, preventing overheating while maintaining the multi-coil configuration needed for versatile heating.
Solution Approach 2:
The aluminum bar acts as an intermediary heat dissipation component, conducting heat away from the working coils and transferring it to the ambient air through the forced convection system. This mediator structure enables effective cooling of multiple coils without requiring individual cooling mechanisms for each.
3Area of stationary object
If working coils are closely arranged to improve heating coverage, then the device compactness is improved, but the heat dissipation becomes more difficult
Solution Approach 1:
The aluminum bar is designed with localized cooling channels and air flow paths that direct cool air specifically to the regions around each working coil. This localised approach to heat dissipation allows coils to be closely arranged for maximum heating coverage while ensuring each coil receives adequate cooling airflow.
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 simplifies the assembly process, reduces the risk of component damage from heat, and improves durability by effectively dissipating heat generated by the working coils and electronic components.
Implementation Method 1
In the induction heating method, eddy current may be generated in the object made of metal based on a magnetic field generated, around the coil, based on a high-frequency power having a predetermined magnitude applied to the coil to heat the object
Implementation Method 2
a blowing fan that is disposed at a lower surface of the base plate and that is configured to draw air from an outside of the case and to discharge the air into an air flow path defined between the base plate and the indicator substrate
Data Source
AI summary
An induction heating device includes a case, a working coil, a base plate that is disposed vertically below the working coil, an indicator substrate support that is coupled to the case and that is disposed vertically below the base plate, an indicator substrate that is disposed on an upper surface of the indicator substrate support, that is disposed vertically below the base plate, and that is spaced apart from the base plate, an inverter substrate that is disposed at a lower surface of the indicator substrate support and that includes an inverter configured to apply a resonance current to the working coil through a switching operation, and a resonance substrate that is disposed at the lower surface of the indicator substrate support, that is connected to the working coil, and that includes a resonance capacitor configured to generate the resonance current based on the switching operation of the inverter.