Offset Air Inlet Member for Uniform Heating in Aerosol Devices
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Solution Overview
Problem
Existing smoking alternatives that heat tobacco or aerosol generating materials without burning them often face challenges in efficiently distributing air to ensure uniform heating and aerosol production, leading to suboptimal performance and user experience.
Innovation Solution
The aerosol provision device incorporates a heater assembly with a heating chamber and a unique air inlet member that offsets its passage from the longitudinal axis, providing a radial air flow path, and includes insulation and a radial lip seal to enhance air distribution and thermal management, allowing for efficient heating of aerosol generating materials without burning them.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If air inlet is positioned on the longitudinal axis of the heating chamber, then the structure is simple and easy to manufacture, but air flow distribution is poor and heating uniformity deteriorates
Solution Approach 1:
The air inlet member is deliberately positioned offset from the longitudinal axis of the heating chamber, creating an asymmetric configuration. This asymmetric air inlet design improves air flow distribution and heating uniformity while maintaining manufacturing simplicity through the straightforward offset positioning approach.
2Manufacturing precision
If air passage is offset from longitudinal axis, then air flow distribution improves and heating uniformity increases, but device complexity increases
Solution Approach 1:
The offset air inlet member creates localized variations in air flow characteristics at different positions within the heating chamber. This local quality approach ensures improved air distribution and heating uniformity in critical areas without requiring complex overall device architecture, as the offset positioning is implemented through a simple geometric modification.
3Productivity
If heating element directly heats aerosol generating material, then heating efficiency is high, but thermal management becomes difficult and battery may be exposed to excessive heat
Solution Approach 1:
The offset air inlet member acts as an intermediary element that facilitates controlled air flow between the heating chamber and the battery compartment. This intermediary structure enables thermal management by directing cooling air flows that protect the battery from excessive heat while maintaining heating efficiency through optimized air distribution in the heating chamber.
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 design ensures improved air flow and thermal distribution, resulting in enhanced aerosol production and user experience by maintaining efficient heating of aerosol generating materials within the device, while also protecting the battery from excessive heat.
Implementation Method 1
a heating element configured to heat aerosol generating material received in the heating chamber
Implementation Method 2
an air inlet member forming an air passage at one end of the heating chamber, the air passage defining part of a flow path with the heating chamber, wherein at least part of the air passage defined by the air inlet member is offset from the longitudinal axis of the heating chamber
Implementation Method 3
The device may comprise insulation between the heater assembly and the battery
Implementation Method 4
a radial lip seal arranged within the air inlet member and configured to prevent passage of air through the air inlet member
Data Source
AI summary
An aerosol provision device includes a heater assembly heating chamber defining a longitudinal axis arranged to receive at least a portion of an article including aerosol generating material and a heating element configured to heat aerosol generating material received in the heating chamber, the device having an air inlet member forming an air passage at one end of the heating chamber, the air passage defining part of a flow path with the heating chamber, wherein at least part of the air passage defined by the air inlet member is offset from the longitudinal axis of the heating chamber.