Segmented Induction Heating Elements for Tobacco Cigarettes
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Solution Overview
Problem
Existing electronic cigarette heating methods, such as central and around heating using electromagnetic induction, result in uneven heating, affecting the taste and efficiency of the smoking experience due to magnetic shielding and low heating efficiency.
Innovation Solution
A heating device with a base, supporter, and electromagnetic induction coil that includes first and second heating elements, where the first heating element contacts the outer surface and the second heating element is inserted into the tobacco cigarette, forming a cut around the coil to ensure even heating and improved magnetic flux absorption, enhancing heating efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If a closed annulus-shaped heating element is used for around heating, then the heating element can be disposed around the tobacco cigarette, but the closed annulus concentrates electromagnetic inductive lines on itself, causing magnetic shielding to the tobacco cigarette at the center, resulting in low heating efficiency and uneven heating
Solution Approach 1:
The patent divides the closed annulus-shaped heating element into multiple segmented heating elements with gaps between them. This segmentation prevents the concentration of electromagnetic inductive lines on a continuous closed loop, thereby reducing magnetic shielding effects on the tobacco cigarette placed at the center while maintaining effective around heating.
2Temperature
If central heating is used, then the heating element can be inserted into the tobacco cigarette, but the inside of the tobacco cigarette has high temperature whereas the outside has low temperature, tremendously affecting the taste
Solution Approach 1:
The patent combines both central heating and around heating methods into a single heating system. The heating element includes both a central heating component that can be inserted into the tobacco cigarette and around heating components that contact the outer surface, enabling simultaneous heating from both inside and outside to achieve uniform temperature distribution and consistent taste.
3Temperature
If around heating is used with a closed annulus, then the heating element can surround the tobacco cigarette, but the magnetic flux absorption by the tobacco cigarette is affected, resulting in low heating efficiency
Solution Approach 1:
By segmenting the closed annulus into multiple heating elements with gaps, the patent allows electromagnetic inductive lines to pass through the gaps and reach the tobacco cigarette more effectively. This improves electromagnetic flux absorption by the tobacco cigarette while maintaining the around heating function, thereby increasing heating efficiency.
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 achieves even heating of the tobacco cigarette from both inside and outside, improving the taste consistency and user experience by ensuring sufficient electromagnetic flux absorption and efficient heating.
Implementation Method 1
an electromagnetic induction coil, wound around the supporter and configured for generating an alternative magnetic field in the chamber
Implementation Method 2
the heating element generates heat by means of electromagnetic induction to heat the tobacco cigarette
Data Source
AI summary
A heating device includes a base; a supporter disposed on the base, the supporter has a chamber therein and the chamber being configured for receiving the tobacco cigarette; an electromagnetic induction coil, wound around the supporter and configured for generating an alternative magnetic field in the chamber; at least one first heating element disposed in the chamber; when the tobacco cigarette is disposed in the chamber, the at least one first heating element contacts an outer surface of the tobacco cigarette and is configured for generating a vortex in the alternative magnetic field to heat the tobacco cigarette; and a second heating element disposed on the base; when the tobacco cigarette is disposed in the chamber, the second heating element is inserted into the tobacco cigarette and configured to generate a vortex in the alternative magnetic field to heat the tobacco cigarette.