Smoking Substitute Heater Shielding for Plastic Enclosure Heat Protection
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Solution Overview
Problem
Existing smoking substitute systems face inefficiencies in delivering nicotine to the lungs due to unsuitable aerosol droplet size distribution and thermal degradation issues with plastic enclosures when exposed to heat, leading to reduced performance and potential health risks.
Innovation Solution
A smoking substitute system with a heat shield between the heater and the plastic enclosure, along with a heat insulating gap, to prevent thermal degradation and optimize aerosol droplet size for effective nicotine delivery, featuring a heat shield with a contact portion for support and a heat-absorbing surface larger than the heater to intercept excess heat, and a gap to limit heat transfer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the heater is positioned close to the plastic enclosure to maintain compact design, then the device size is reduced, but the plastic enclosure undergoes thermal degradation
Solution Approach 1:
A heat shield is introduced as an intermediary component between the heater and the plastic enclosure. The heat shield intercepts thermal radiation and conduction from the heater, preventing excessive heat from reaching the plastic enclosure. This allows the heater to be positioned closer to the enclosure while maintaining compact device size, as the heat shield blocks the harmful thermal effects without requiring increased spacing.
2Productivity
If the heater operates at high temperature to efficiently vaporize e-liquid, then nicotine delivery efficiency is improved, but the plastic enclosure experiences thermal degradation
Solution Approach 1:
The heat shield serves as a protective intermediary that enables the heater to operate at high temperatures for efficient nicotine delivery without compromising the plastic enclosure. By blocking thermal pathways, the heat shield decouples the heater's operating temperature from the enclosure's temperature, allowing high productivity while preventing thermal degradation.
Solution Approach 2:
The heat shield converts the harmful thermal energy that would otherwise degrade the plastic into a beneficial protective barrier. It intercepts and redirects heat away from the enclosure, transforming what would be a harmful effect into a controlled thermal management solution that enables efficient operation.
3Object-affected harmful factors
If a heat shield is added to protect the plastic enclosure from heat, then thermal degradation is prevented, but device complexity increases
Solution Approach 1:
The heat shield is implemented as a thin-walled structure that provides effective thermal protection without adding significant structural complexity. The thin-film approach blocks thermal radiation and conduction pathways while maintaining a simple geometric form that integrates easily into the existing device architecture, minimizing the increase in device complexity.
4Object-affected harmful factors
If the heat shield has a large heat-absorbing surface to intercept excess heat, then thermal protection is improved, but the amount of material used increases
Solution Approach 1:
The heat shield utilizes a thin-walled construction that provides adequate thermal protection with minimal material consumption. The thin film approach is sufficient to block thermal radiation and conduction from the heater to the enclosure, reducing material usage compared to thick-walled alternatives while maintaining effective thermal protection.
Solution Approach 2:
The heat shield's thickness and material properties are optimized to achieve the required level of thermal protection with minimal material. By adjusting parameters such as thickness, thermal conductivity, and surface area, the design achieves effective heat interception while minimizing material consumption and resource waste.
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 system effectively delivers nicotine by controlling aerosol droplet size and preventing thermal degradation of the enclosure, enhancing user experience and safety while maintaining a compact design.
Implementation Method 1
a heat shield between a heater of the aerosol generator and a part of the enclosure formed from plastics material
Implementation Method 2
there being a heat insulating gap between said part of the enclosure and the heat shield
Implementation Method 3
the aerosol generator being operable to generate an aerosol by vaporizing an aerosol precursor
Data Source
AI summary
Provided is a smoking substitute apparatus comprising an enclosure and an aerosol generator, the enclosure at least partially enclosing the aerosol generator, the aerosol generator comprising a heater and being operable to generate an aerosol by vaporizing an aerosol precursor, wherein at least part of the enclosure adjacent the heater is formed from plastics material, there being provided a heat shield between said part of the enclosure and the heater and there being a heat insulating gap between said part of the enclosure and the heat shield. Also provided is: a smoking substitute system comprising a base unit, and the smoking substitute apparatus, wherein the smoking substitute apparatus is removably engageable with the base unit; and a method of using the smoking substitute apparatus to generate an aerosol.