Aerosol Flow Path Layout for Compact Wick Liquid Delivery
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Solution Overview
Problem
Existing aerosol-generating devices face challenges in reducing the size of the wick while maintaining its durability and improving the structural efficiency and liquid delivery efficiency from the chamber to the wick.
Innovation Solution
The design incorporates a first and second housing structure with a wick and an absorbent member, featuring a first aerosol flow path surrounding the wick and a second aerosol flow path adjacent to it, along with a protruding area from the absorbent member to enhance delivery efficiency and structural design.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the wick size is reduced to improve manufacturing economy and efficiency, then manufacturing cost decreases, but the durability and liquid delivery efficiency of the wick deteriorates
Solution Approach 1:
The patent employs composite material structures for the wick, combining materials with different properties to achieve both reduced size and maintained durability. The wick is constructed with hierarchical pore structures and composite fiber arrangements that provide mechanical strength while minimizing volume, resolving the contradiction between manufacturing economy and reliability.
Solution Approach 2:
The wick utilizes porous material structures with optimized pore size distributions and connectivity. The porous structure provides high surface area to volume ratio for improved liquid delivery efficiency while maintaining structural integrity through controlled pore architecture, allowing size reduction without sacrificing durability.
2Volume of moving object
If the wick size is reduced, then the device compactness improves, but the liquid delivery efficiency from chamber to wick deteriorates
Solution Approach 1:
The wick structure implements local quality variations with different regions having optimized properties for their specific functions. The proximal region (near chamber) features enhanced porosity and pore connectivity for efficient liquid uptake, while the distal region (near heater) has optimized capillary structures for vaporization. This spatial differentiation maintains liquid delivery efficiency despite overall size reduction.
Solution Approach 2:
The patent transitions from conventional one-dimensional wick structures to multi-dimensional hierarchical pore networks and three-dimensional fiber arrangements. This dimensional expansion provides multiple parallel liquid transport pathways, increasing effective delivery cross-section without proportionally increasing wick volume, thus maintaining productivity while reducing size.
3Productivity
If the arrangement and shape of the wick are modified to improve liquid delivery, then liquid delivery efficiency improves, but the structural design complexity of related components increases
Solution Approach 1:
The wick is segmented into functional zones with distinct structural characteristics optimized for specific tasks: liquid reservoir region, transport region, and vaporization region. Each segment has tailored pore structures and material compositions. This segmentation improves liquid delivery efficiency through specialized local structures while allowing modular design that simplifies overall component integration and manufacturing.
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 configuration improves the structural efficiency of the wick and absorbent member, enhancing liquid delivery efficiency and reducing the wick's volume, thereby improving manufacturing economy and durability.
Implementation Method 1
an absorbent member including a protruding area protruding from the second housing structure, the absorbent member delivering an aerosol-generating substance from the chamber to the wick
Implementation Method 2
generates an aerosol through a heater module that heats the wick
Data Source
AI summary
Provided is an aerosol-generating device including a first housing structure including an atomization space and a first aerosol flow path communicating with the atomization space, a second housing structure including a chamber that accommodates an aerosol-generating substance, an intake that discharges an aerosol, and a second aerosol flow path that communicates with the intake from the first aerosol flow path, and second housing structure detachably coupled to the first housing structure, a wick disposed inside the atomization space, and an absorbent member including a protruding area protruding from the second housing structure, the absorbent member delivering an aerosol-generating substance from the chamber to the wick. The first aerosol flow path is deployed in a direction surrounding the wick and the protruding area of the absorbent member.