Aerosol Insert Chamber Layout for Liquid Storage and Stick Sensing
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Solution Overview
Problem
Existing aerosol-generating devices face inefficiencies in space utilization for liquid storage, heat transfer, and integration of components such as sensors, and often interfere with the insertion of the stick.
Innovation Solution
An aerosol-generating device with an elongated container having an inner and outer wall, a chamber for liquid storage, a wick and heater configuration, and an infrared sensor positioned outside the insertion space to enhance space efficiency, heat transfer, and non-invasive stick detection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If a chamber for storing liquid is defined between the inner wall and the outer wall of the container, then the liquid storage efficiency is improved, but the device structure becomes more complex
Solution Approach 1:
The liquid storage chamber is nested between the inner wall and outer wall of the container, creating a multi-layered structure where the chamber is embedded within the container walls rather than being a separate component. This nesting approach increases liquid storage capacity while integrating the storage function into the existing container structure, thereby limiting the increase in overall device complexity
2Difficulty of detecting and measuring
If the infrared sensor is disposed adjacent to the insert space, then the stick detection function is achieved, but the insertion space is invaded or insertion is interfered with
Solution Approach 1:
The infrared sensor serves as an intermediary detection device positioned adjacent to but not invading the insert space. It detects the stick state through infrared radiation without requiring physical contact or occupation of the insertion space, thereby enabling stick detection while maintaining unobstructed insertion operations
3Use of energy by moving object
If the heater is configured to heat the wick close to the stick, then the heat transfer efficiency is improved, but the space for liquid storage is reduced
Solution Approach 1:
The heater is positioned to heat the wick in close proximity to the stick, creating a localized high-heat-transfer zone where needed for efficient aerosol generation. This local concentration of heating function improves heat transfer efficiency without requiring extensive heating infrastructure that would occupy liquid storage space
4Ease of operation
If the container has outer surfaces with different shapes, then the user grip is improved, but the manufacturing complexity increases
Solution Approach 1:
The container is designed with asymmetric outer surfaces featuring different shapes and contours optimized for ergonomic user grip. This asymmetric design provides tactile comfort and secure handling while the container maintains internal symmetry or simplified internal geometry to minimize manufacturing complexity
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
Improves liquid storage efficiency, reduces heat transfer distance, allows for easy grip, and enables non-invasive stick detection without interfering with insertion.
Implementation Method 1
an infrared sensor disposed adjacent to the insert space
Implementation Method 2
a heater configured to heat the wick
Implementation Method 3
a wick disposed at an end of the insert space
Data Source
AI summary
An aerosol-generating device is disclosed. The aerosol-generating device includes comprising an inner wall and an outer wall, wherein the inner wall defines an insert space configured to accommodate insertion of an aerosol-generating member, and wherein a chamber configured to store liquid is defined between the inner wall and the outer wall; a wick disposed at an end of the insert space; a heater configured to heat the wick; a passage formed between the insert space and the wick; and an infrared sensor disposed adjacent to the insert space.