Induction Cooktop Base Plate Heat Dissipation Design
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Solution Overview
Problem
Conventional under-induction ranges with stacked heating coils and ferrite cores face issues of increased heat generation leading to accidents and ferrite core cracking, affecting quality and safety.
Innovation Solution
A base plate structure with hall effect sensors, unit mounting groove portions, protrusion portions, and heat discharge openings, along with cooling fans, is designed to enhance heat dissipation and prevent ferrite core damage by facilitating air-cooling of the heating coil and creating a flow path for heat discharge.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If heating coils are stacked in two or more layers to increase magnetic field transmission, then magnetic field transmission is improved, but heat generation increases causing safety accidents and ferrite core cracking
Solution Approach 1:
The base plate is divided into multiple functional regions: a central recessed portion for housing the ferrite core, circumferential grooves for heat dissipation, and protrusion portions for coil positioning. This segmentation allows each region to perform its specific function independently, enabling effective heat management while maintaining magnetic field transmission capability.
Solution Approach 2:
The base plate acts as an intermediary thermal management system between the stacked heating coils and the external environment. It provides a structured platform with integrated heat dissipation pathways (grooves and openings) that mediates the thermal load, preventing direct heat transfer to the ferrite core while maintaining coil positioning and magnetic field generation.
2Power
If ferrite core is continuously exposed to heat to enhance magnetic field, then magnetic field strength is improved, but ferrite core cracks due to thermal exposure
Solution Approach 1:
The ferrite core is extracted from direct contact with the heating coils by placing it in a recessed portion of the base plate. This spatial separation removes the ferrite core from the high-temperature zone, allowing it to provide magnetic field enhancement without being damaged by continuous thermal exposure.
Solution Approach 2:
The base plate structure provides beforehand thermal protection to the ferrite core through its thermal mass and heat dissipation pathways. The grooves and openings are designed to conduct heat away from the core area before it can accumulate to damaging levels, cushioning the core against thermal stress.
3Reliability
If heating coils are wound close to the base plate to maximize magnetic field transmission, then magnetic field transmission is improved, but heat dissipation becomes difficult
Solution Approach 1:
The base plate incorporates local structural variations to optimize heat dissipation: circumferential grooves create localized air channels around the coil assembly, and heat discharge openings provide localized exit paths for hot air. These local features enhance heat dissipation efficiency without compromising the overall magnetic field transmission capability.
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
The solution effectively cools the heating coil, preventing malfunctions and accidents, and maintains the integrity of the ferrite core, thereby improving the quality and safety of the under-induction range.
Implementation Method 1
an induction range has been widely and increasingly used as a heating device for cooking food. As a cooking appliance that adopts a heating method of electromagnetic induction
Implementation Method 2
lines of magnetic force produced when a high-frequency current is applied passes through a bottom of an induction cooking container laid on a top plate of the induction range, at which point an eddy current generated by a resistance component only heats the induction cooking container
Implementation Method 3
at least one or more hall effect sensors are disposed in a center sensor portion
Implementation Method 4
one or more heat discharge openings provided in a bottom side of the unit mounting groove portions
Data Source
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AI summary
The present invention relates to a base plate structure facilitating heat discharge of a heating coil. According to sone embodiment of the present invention, the base plate structure comprises a circular base plate where at least one or more hall effect sensors are disposed in a center sensor portion. One or more unit mounting groove portions are defined by a closed partition wall protruding from a lower side of the base plate. One or more protrusion portions protrude from an upper side of the base plate such that the heating coil wound in the upper side of the base plate is spaced apart from the upper side of the base plate. One or more heat discharge openings are provided in a bottom side of the unit mounting groove portions.