Inductive Heating Element with Integrated Coil for Aerosol Devices
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Solution Overview
Problem
Existing aerosol generating devices for non-combustible tobacco products face challenges in efficiently heating aerosol-generating materials without burning, requiring innovative heating solutions that are compact, efficient, and safe.
Innovation Solution
The aerosol generating device employs a magnetic field generator with an inductor coil and a heating element, where the inductor coil is partially or fully extended within the heating element, generating a varying magnetic field to heat the aerosol-generating material without physical contact, allowing for efficient and controlled aerosol production.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If a magnetic field generator with inductor coil is used for heating, then heating efficiency is improved, but device complexity increases
Solution Approach 1:
The inductor coil is integrated within the heating element structure, merging the magnetic field generation component with the heating component into a unified assembly. This reduces the number of separate parts and simplifies the overall device structure while maintaining efficient inductive heating functionality.
Solution Approach 2:
The heating element serves dual functions: it acts as both the heating component and the structural housing for the inductor coil. This multi-functional design reduces device complexity by eliminating the need for separate mounting structures and insulation components that would otherwise be required.
2Volume of moving object
If the inductor coil is extended within the heating element, then device size is reduced, but manufacturing precision requirements increase
Solution Approach 1:
The inductor coil is nested within the heating element structure, with the coil positioned inside the heating element's body. This nested configuration maximizes space utilization, reduces the overall device volume, and integrates multiple components into a compact unified structure.
Solution Approach 2:
The heating element features localized structural variations to accommodate the inductor coil, including specific cavity shapes, wall thickness variations, and positioning features. These local quality adjustments enable precise coil placement and optimal magnetic field generation while maintaining manufacturability.
3Object-affected harmful factors
If the inductor coil is spaced from the heating material, then safety is improved, but heating efficiency decreases
Solution Approach 1:
The heating element acts as an intermediary component between the inductor coil and the heating material. It is magnetically penetrable to the varying magnetic field generated by the coil, becomes heated through inductive heating, and then transfers this heat to the aerosol-generating material. This intermediary approach provides safety by isolating the coil from direct contact with the material while maintaining heating efficiency through the magnetic field penetration mechanism.
Solution Approach 2:
The system replaces direct mechanical contact heating with inductive heating through magnetic field penetration. The inductor coil generates a varying magnetic field that penetrates the magnetically penetrable heating element, inducing eddy currents that generate heat internally in the heating element, which then contacts and heats the aerosol-generating material. This substitution eliminates the need for direct electrical contacts or mechanical heating elements while maintaining efficient heat transfer.
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
This configuration enables efficient aerosol generation with reduced device size, improved portability, and enhanced safety by minimizing direct heat exposure, while maintaining effective heating of aerosol-generating materials within the device.
Implementation Method 1
a magnetic field generator configured to generate a varying magnetic field including an inductor coil and a heating element comprising heating material that is heatable by penetration with the varying magnetic field
Implementation Method 2
heating material that is heatable by penetration with the varying magnetic field
Implementation Method 3
heating material that is heatable by penetration with the varying magnetic field
Data Source
AI summary
An aerosol generating device (101) is described. The device is for generating an aerosol from aerosol-generating material. The device has a heating zone (215) for receiving at least a portion of an article (110) comprising aerosol-generating material and a heating assembly (201). The heating assembly comprises a magnetic field generator (240) to generate a varying magnetic field including an inductor coil (242) and a heating element (220) comprising heating material that is heatable by penetration with the varying magnetic field. The heating element protrudes in the heating zone and the inductor coil at least partially protrudes in the heating zone.