Atomizer Ventilation Channel Geometry for Pressure Balance and Leak Prevention
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Solution Overview
Problem
Aerosol-forming medium in the ventilation channel of an atomizer is prone to leakage due to changes in external temperature or pressure, causing imbalance in the liquid storage cavity.
Innovation Solution
The atomizer incorporates a ventilation channel with a narrowed portion and/or an expanded portion to alter the capillary force direction, preventing the aerosol-forming medium from flowing out of the channel.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stress or pressure
If a ventilation channel is provided to balance air pressure in the liquid storage cavity, then air pressure balance is improved, but the aerosol-forming medium easily flows out of the ventilation channel when external temperature or pressure changes
Solution Approach 1:
The ventilation channel is designed with different cross-sectional areas at different locations, creating local quality variations. Specifically, the channel includes a first section with a first cross-sectional area and a second section with a second cross-sectional area that is different from the first, allowing different regions to perform different functions in preventing medium leakage while maintaining pressure balance
Solution Approach 2:
The ventilation channel employs asymmetric design by having unequal cross-sectional areas in different sections. This asymmetry creates directional control over fluid flow, allowing the channel to preferentially allow air passage while blocking the aerosol-forming medium from flowing outward, thus resolving the contradiction between pressure balance and leakage prevention
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 effectively prevents leakage of the aerosol-forming medium, enhancing the atomizer's performance by maintaining the integrity of the ventilation channel.
Implementation Method 1
the aerosol-forming medium in the liquid storage cavity enters the ventilation channel under an action of capillary force
Data Source
AI summary
An atomizer includes: a liquid storage cavity for storing an aerosol-forming medium; and a ventilation channel, a first end of which is communicated with the liquid storage cavity, the ventilation channel having a narrowed portion and/or an expanded portion for preventing the aerosol-forming medium from flowing out of the ventilation channel from a second end of the ventilation channel.