Medium Portion Wrapper Enhances Thermal Transfer in Externally Heated Aerosol Devices
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Solution Overview
Problem
Externally heated aerosol generation devices face challenges in providing sufficient atomization during the initial puff period due to inefficient thermal energy transfer from the heater to the cigarette.
Innovation Solution
The cigarette features a medium portion wrapper with enhanced thermal conductivity materials, such as sodium citrate or potassium citrate, applied through coating or internal addition, and an outer cover to improve thermal energy transfer, ensuring efficient heating of the aerosol generating substrate.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If thermal energy transfer efficiency is improved by direct contact heating, then heating efficiency is improved, but device complexity and safety risks increase
Solution Approach 1:
The patent introduces a medium portion wrapper as an intermediary component between the heater and the aerosol generating substrate. This wrapper is made of material with enhanced thermal conductivity (through coating or internal addition of materials like sodium citrate or potassium citrate) to facilitate efficient thermal energy transfer from the heater to the substrate without requiring direct contact, thus maintaining safety while improving heating efficiency
Solution Approach 2:
The patent changes the thermal conductivity parameter of the medium portion wrapper by incorporating materials with high thermal conductivity (such as sodium citrate or potassium citrate) through coating or internal addition. This parameter change enables the wrapper to efficiently transfer thermal energy from the heater to the aerosol generating substrate, resolving the contradiction between maintaining structural simplicity and achieving effective heating
2Quantity of substance
If thermal energy transfer is enhanced during initial puff, then atomization amount is improved, but risk of overheating and harmful factors increases
Solution Approach 1:
The patent modifies the thermal conductivity parameter of the medium portion wrapper to optimize heat transfer. By carefully selecting and incorporating materials with specific thermal conductivity properties (such as sodium citrate or potassium citrate), the system achieves sufficient atomization during initial puff while maintaining temperature control to prevent overheating and associated harmful effects
Solution Approach 2:
The medium portion wrapper acts as a thermal intermediary that controls and regulates heat transfer from the heater to the aerosol generating substrate. This intermediary layer ensures adequate thermal energy transfer for sufficient atomization while preventing excessive heat accumulation that could lead to overheating and harmful factors
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 solution provides a sufficient amount of atomization to the user even during the initial puff, enhancing the smoking experience by ensuring efficient thermal energy transfer from the heater to the aerosol generating substrate.
Implementation Method 1
the medium portion wrapper is produced by work processing of increasing efficiency of thermal energy transferred to the medium portion
Data Source
AI summary
The present disclosure provides an externally heated aerosol generation device and a cigarette that may provide a sufficient amount of atomization to allow a user to have a satisfactory smoking experience even during an initial puff because thermal energy is easily transferred to the cigarette.