Thin-Wall Heating Chamber for Fast, Low-Loss Aerosol Heating
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Solution Overview
Problem
Existing aerosol generation devices face challenges in efficiently heating aerosol substrates to release aerosols while minimizing energy consumption and maintaining thermal efficiency, particularly in portable and self-contained designs.
Innovation Solution
A heating chamber with a thin tubular side wall (less than 90 μm thick) made of low thermal conductivity materials like stainless steel, combined with a flanged portion and protrusions on the inner surface, enhances thermal isolation and efficient heat transfer, allowing for rapid heating and reduced thermal mass.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If a thin tubular side wall (less than 90 μm thick) is used in the heating chamber, then thermal isolation and heating efficiency are improved, but structural strength and durability may deteriorate
Solution Approach 1:
The heating chamber employs a thin tubular side wall with thickness of less than 90 μm, utilizing thin-walled structure principles to achieve superior thermal isolation. This thin wall design minimizes heat loss to the environment while maintaining functional integrity through careful material selection and structural design.
Solution Approach 2:
The heating chamber is constructed from stainless steel material that provides both thermal isolation properties and structural strength. The material selection balances thermal conductivity for energy efficiency with mechanical properties required for device durability and operational reliability.
2Loss of energy
If heating chamber materials with low thermal conductivity are used, then thermal efficiency is improved, but heat transfer speed to the aerosol substrate may worsen
Solution Approach 1:
The heating chamber features localized heating zones where heat is applied directly to specific regions of the aerosol substrate. This localized approach ensures rapid heating where needed while maintaining thermal isolation in other areas, achieving both fast heating speed and high thermal efficiency simultaneously.
Solution Approach 2:
The heating chamber includes protrusions on the inner surface that segment the heating area, creating multiple contact points with the aerosol substrate. This segmentation increases the effective heat transfer surface area and accelerates heating while the low thermal conductivity material prevents heat loss to surrounding structures.
3Use of energy by moving object
If the side wall thickness is reduced to less than 90 μm, then thermal mass is reduced and heating efficiency improves, but manufacturing precision requirements increase
Solution Approach 1:
The side wall thickness is optimized to less than 90 μm, representing a critical parameter change that reduces thermal mass and improves energy efficiency. This precise thickness control is achieved through advanced manufacturing processes that can consistently produce walls within tight tolerances while maintaining structural integrity.
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 solution enables efficient aerosol generation with reduced energy consumption, faster heating times, and improved thermal efficiency, ensuring that only the intended parts of the device are heated, thereby enhancing the overall performance of the aerosol generation device.
Implementation Method 1
the tubular side wall has a thickness of 90 μm or less... made of low thermal conductivity materials like stainless steel... enhances thermal isolation
Implementation Method 2
heat, rather than burn, tobacco or other suitable materials by conduction, convection, and/or radiation
Implementation Method 3
heat, rather than burn, tobacco or other suitable materials by conduction, convection, and/or radiation
Implementation Method 4
heat, rather than burn, tobacco or other suitable materials by conduction, convection, and/or radiation
Data Source
AI summary
An aerosol generation device has a heating chamber for receiving a substrate carrier containing an aerosol substrate. The heating chamber includes a tubular side wall having an open first end, wherein the tubular side wall has a thickness of 90 μm or less. An aerosol generation device includes the heating chamber, an electrical power source, a heater arranged to supply heat to the heating chamber, and control circuitry configured to control the supply of electrical power from the electrical power source to the heater.