Induction Cooktop Insulating Layer for Intermediate Heating Bodies
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Solution Overview
Problem
Induction heating cooktops face inefficiencies in heating both magnetic and non-magnetic materials due to heat loss from the intermediate heating body to the top plate and overheating of the top plate, leading to reduced heating performance.
Innovation Solution
The cooktop is designed with a top plate comprising an intermediate heating body, an insulating material, and a supporter, where the insulating material is placed between the intermediate heating body and the supporter to minimize heat loss, and the magnetic field coupling force is controlled by adjusting the phase of multiple coils.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If the intermediate heating body is coated on the lower surface of the top plate, then the heating efficiency for non-magnetic objects is improved, but heat loss occurs from the intermediate heating body to the top plate
Solution Approach 1:
The patent introduces an insulating layer as an intermediary substance between the intermediate heating body and the top plate. This insulating layer mediates the thermal interaction, preventing harmful heat transfer to the top plate while allowing the heating function to operate effectively on non-magnetic cookware.
Solution Approach 2:
The patent segments the heating system into distinct functional layers: the top plate, the insulating layer, and the intermediate heating body. This segmentation allows each component to perform its specific function independently, with the insulating layer specifically tasked with preventing heat loss to the top plate.
2Productivity
If the intermediate heating body is coated on the upper surface of the top plate, then the heating efficiency is improved, but a separate protective layer is required to prevent damage to the intermediate heating body
Solution Approach 1:
The patent merges the protective layer function with the insulating layer, combining two functions (protection and insulation) into a single integrated component. This eliminates the need for a separate protective layer while maintaining both protection and heat isolation functions.
Solution Approach 2:
The insulating layer is designed to serve multiple functions simultaneously: it provides thermal insulation to prevent heat loss to the top plate, protects the intermediate heating body from mechanical damage, and maintains structural integrity. This multi-functionality reduces overall system complexity.
3Device complexity
If the intermediate heating body is coated on the lower surface of the top plate, then the structure is simplified, but overheating of the top plate occurs due to heat transfer
Solution Approach 1:
The insulating layer acts as a thermal intermediary that blocks excessive heat transfer from the intermediate heating body to the top plate, preventing overheating while maintaining the simplified structural arrangement of having the heating body on the lower surface.
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 reduces heat loss by minimizing heat loss from the intermediate heating body to the top plate, thereby improving heating efficiency for both magnetic and non-magnetic materials.
Implementation Method 1
the induction heating method is a method of applying a certain amount of high-frequency power to a coil, utilizing the magnetic field generated around the coil to generate an eddy current in the object to be heated made of metal components, thereby heating the object to be heated itself
Implementation Method 2
an insulating material that is arranged to be in contact with at least one surface of the intermediate heating body
Data Source
AI summary
A cooktop using an induction heating method according to an embodiment of the present disclosure includes a plate on which an object to be heated is placed, a working coil generating a magnetic field for heating the object to be heated, and an inverter configured to control current flowing through the working coil. The plate may include a supporter made of a non-metallic material, an intermediate heating body forming at least a part of an upper surface of a top plate, and an insulating material that is arranged to be in contact with at least one surface of the intermediate heating body.