Induction Heating Structure for Solid Tobacco Aerosol Generators
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Solution Overview
Problem
Aerosol generating devices using nickel chromium heating elements suffer from low thermal efficiency.
Innovation Solution
An aerosol generating device with a housing, cup body, coil module, and heating element, where the coil module generates a high frequency alternating magnetic field to produce an eddy current and heat solid tobacco substances, enhancing thermal efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If a nickel chromium heating body is used to heat, then the device can heat solid tobacco substance, but the thermal efficiency is low
Solution Approach 1:
The patent replaces the conventional nickel chromium resistive heating body with an electromagnetic induction heating system. The coil module generates a high frequency alternating magnetic field that induces eddy currents in the heating element, which then generates heat through electromagnetic induction rather than resistive heating. This substitution of heating mechanism significantly improves thermal efficiency while maintaining the capability to heat solid tobacco substance
Solution Approach 2:
The patent changes the heating mechanism from resistive heating (nickel chromium) to electromagnetic induction heating. By changing the physical principle and parameters of heating from electrical resistance to electromagnetic field induction, the system achieves higher thermal efficiency. The high frequency alternating magnetic field induces stronger eddy currents, resulting in more efficient heat generation and transfer to the tobacco substance
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 device achieves high thermal efficiency in heating solid tobacco substances, improving the aerosol generation process.
Implementation Method 1
The coil module generates a high frequency alternating magnetic field. The heating element is configured for generating an eddy current and heat in response to the alternating magnetic field
Implementation Method 2
The heating element is configured for generating an eddy current and heat in response to the alternating magnetic field
Data Source
Figure 1
Figure 2
Figure 3~4
AI summary
The present disclosure relates to an aerosol generating device (10) for heating solid tobacco substance (20). The aerosol generating device includes a housing (12) having a first air inlet (122), a power supply (11), a cup body (14) arranged in the housing, a coil module (16), and a heating element (18). The power supply is configured for supplying an alternating current power supply. The cup body is configured for receiving the solid tobacco substance, and defines a second air inlet (142). The coil module is arranged between the housing and the cup body. Two opposite ends of the coil module are connected to the alternating current power supply, such that the coil module generates a high frequency alternating magnetic field. The heating element is arranged at a center of the cup body. The heating element is configured for generating an eddy current and heat in response to the alternating magnetic field, thus heating the solid tobacco substance.