Thermal Insulation Wall With Mesh Layer for Cooler Aerosol Housing
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Solution Overview
Problem
Aerosol generation devices often overheat during extensive use, making them uncomfortable to hold and potentially requiring users to stop vaping to allow the device to cool down.
Innovation Solution
Incorporating a thermal insulation layer with a mesh sublayer and a heat-diffusion layer to manage heat dissipation, where the mesh sublayer allows heat to escape through perforations while minimizing heat conduction, and the heat-diffusion layer spreads heat across the housing, preventing overheating.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a heat source is used to generate aerosol, then aerosol generation capability is improved, but device temperature increases causing discomfort to users
Solution Approach 1:
The housing wall is segmented into multiple layers including an inner wall layer, intermediate layer, and outer wall layer. This segmentation allows heat to be managed at different stages of transmission, with each layer serving specific thermal functions to reduce overall device temperature while maintaining aerosol generation capability.
Solution Approach 2:
A cooling channel is introduced as an intermediary element between the heat source and the external environment. This cooling channel carries cooling fluid that absorbs excess heat, acting as a thermal mediator to transfer heat away from the aerosol generation zone without directly cooling the heat source, thus maintaining productivity while reducing device temperature.
2Loss of energy
If thermal insulation materials are used to reduce heat loss, then energy efficiency is improved, but heat accumulates in the device causing overheating
Solution Approach 1:
Different regions of the housing are assigned different thermal properties. The intermediate layer contains thermal insulation portions in specific areas to reduce heat loss where needed, while cooling channels are positioned in regions where heat removal is prioritized. This local differentiation allows simultaneous heat retention for efficiency and heat removal for temperature control.
Solution Approach 2:
The intermediate layer incorporates porous thermal insulation materials that provide thermal resistance to reduce heat loss. The porous structure creates tortuous heat paths that slow heat transmission, improving energy efficiency while the controlled porosity allows for integration of cooling channels that can actively remove accumulated heat.
3Device complexity
If the housing structure is simplified, then manufacturing cost is reduced, but thermal management capability is insufficient leading to overheating
Solution Approach 1:
The housing structure merges multiple functions into a single integrated assembly. The multi-layer housing with embedded cooling channels combines structural support, thermal insulation, and active cooling functions into one unified component rather than separate parts. This merging reduces overall device complexity and part count while maintaining comprehensive thermal management capability.
Solution Approach 2:
The intermediate layer serves multiple functions simultaneously: it provides thermal insulation to reduce heat loss, houses the cooling channels for heat removal, and maintains structural integrity of the housing. This multi-functionality allows effective thermal management without adding separate dedicated components, thus keeping device complexity low while addressing overheating.
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
Effectively reduces overheating by facilitating efficient heat dissipation, ensuring the device remains comfortable to hold and use continuously without interruption.
Implementation Method 1
the thermal insulation layer comprising a mesh sublayer, the mesh sublayer comprising an interlaced structure, the interlaced structure comprising through-holes through which the heat generated by the heat source flows from the internal space to the outside of the device
Implementation Method 2
Wood and fabric are materials that are relatively good thermal insulators. Therefore, the mesh sublayer allows heat to flow through its mesh openings but conducts only little heat.
Implementation Method 3
the heat-diffusion layer is a heat-conducting plate... Thanks to these features, the heat generated by the heat source is diffused throughout the housing.
Implementation Method 4
the heat-diffusion layer is a heat-conducting plate... This also widens the surface of heat exchange with the thermo-protected portion.
Data Source
AI summary
An aerosol generation device includes a housing, the housing defining an internal space, the device including at least a heat source within the internal space; the housing including at least an insulation wall including an inner surface facing the internal space and an outer surface opposite to the inner surface; the device further including a thermal insulation layer arranged on at least a thermo-protected portion of the outer surface of the insulation wall, the thermal insulation layer including a mesh sublayer, the mesh sublayer including an interlaced structure.