Induction-Heated Aerosol Cup for Higher Thermal Efficiency
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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 induce an eddy current and heat in the heating element, which then heats the solid tobacco substance, and includes a power supply for alternating current, thermal insulation, and radiation protection layers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If a nickel chromium heating body is used to heat, then the device can heat the 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, transforming electrical energy directly into thermal energy through electromagnetic induction rather than resistive heating. This substitution of heating mechanism significantly improves thermal efficiency by reducing energy loss.
Solution Approach 2:
The patent changes the heating parameter from low-frequency resistive heating to high-frequency alternating magnetic field induction heating. By operating at high frequency, the coil module generates a rapidly alternating magnetic field that induces stronger eddy currents in the heating element, thereby increasing the heating efficiency and reducing energy loss during the heating process.
2Use of energy by moving object
If a coil module generates high frequency alternating magnetic field, then thermal efficiency is improved, but radiation protection is required
Solution Approach 1:
The patent addresses the harmful radiation from the high frequency alternating magnetic field by introducing a radiation protection layer. This layer is specifically designed to block or attenuate the electromagnetic radiation while allowing the heating function to operate effectively. The protection layer converts the potentially harmful radiation into a safe condition, enabling the high efficiency heating to proceed without exposing the user to harmful levels of electromagnetic radiation.
3Productivity
If heating element is placed at center of cup body, then heating efficiency is improved, but surface temperature control becomes critical
Solution Approach 1:
The patent segments the temperature control function by introducing a separate thermal insulation layer between the heating element and the cup body housing. This insulation layer acts as a thermal barrier that prevents excessive heat from reaching the outer surface, thereby maintaining safe surface temperatures while allowing the heating element at the center to operate at high temperatures for efficient heating of the tobacco substance.
Solution Approach 2:
The thermal insulation layer serves as an intermediary between the high-temperature heating element and the cup body structure. It mediates the heat transfer, allowing efficient heating to occur at the heating element while preventing dangerous temperature rise at the surface. This intermediary layer enables the system to achieve high heating efficiency without compromising user safety.
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, ensuring effective aerosol formation while protecting the user from radiation and maintaining a safe surface temperature.
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
Implementation Method 3
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
Implementation Method 4
a radiation protection layer and a thermal insulation layer, which are arranged between the cup body and the housing
Data Source
AI summary
The present disclosure relates to an aerosol generating device for heating solid tobacco substance. The aerosol generating device includes a housing having a first air inlet, a power supply, a cup body arranged in the housing, a coil module, and a heating element. 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. 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.