Atomizer Reservoir Vent Valve for Pressure Balance Without Leakage
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Solution Overview
Problem
In electronic atomizing devices, the accumulation of negative pressure in the liquid reservoir due to continuous liquid consumption leads to insufficient liquid supply to the atomizing surface, causing scorching and harmful substance emission during the atomization process.
Innovation Solution
A ventilation valve with an oleophobic material layer and a semi-permeable membrane is integrated into the liquid reservoir, allowing air to enter and maintain normal air pressure, ensuring continuous liquid supply to the atomizing core by preventing liquid leakage and allowing air permeability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a through hole is provided in the liquid reservoir to allow air entry, then air can enter the storage cavity to maintain air pressure, but liquid may leak out through the same hole
Solution Approach 1:
The valve element is provided with an oleophobic material layer that has different properties for different substances: it is hydrophobic to liquid (preventing leakage) while being permeable to air (allowing air entry). This local quality differentiation resolves the contradiction by making the same material surface selective to different substances.
Solution Approach 2:
The oleophobic material layer is designed with porous structure that allows air molecules to pass through while blocking liquid molecules due to surface tension effects. The porous structure enables differential permeability based on substance type, allowing air entry while preventing liquid leakage.
2Object-generated harmful factors
If the liquid reservoir is sealed to prevent liquid leakage, then liquid cannot leak out, but air cannot enter the storage cavity causing negative pressure accumulation
Solution Approach 1:
The oleophobic material layer provides selective permeability with different properties for different substances: complete barrier to liquid while allowing air passage. This resolves the contradiction by creating a interface that is simultaneously sealed against liquid and open to air.
Solution Approach 2:
The material properties of the oleophobic layer are specifically engineered to have different permeability parameters for different substances (air vs liquid). The pore size, surface energy, and thickness parameters are optimized to allow air molecules while blocking liquid molecules, resolving the sealed vs. open contradiction.
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 liquid leakage and maintains normal air pressure in the reservoir, ensuring a consistent liquid supply to the atomizing core, thereby preventing scorching and enhancing user experience by ensuring adequate atomization.
Implementation Method 1
a valve element having air permeability and including an oleophobic material layer and adjacent to the storage cavity
Implementation Method 2
a semi-permeable membrane connected to an end of the oleophobic material layer away from the storage cavity
Implementation Method 3
the liquid will be difficult to be transported to an atomizing surface of a porous heating element for atomization, subjected to a capillary effect
Data Source
AI summary
The present disclosure relates to a ventilation valve configured to be mounted to a liquid reservoir of an electronic atomizing device. The ventilation valve includes: a valve sleeve connected to the liquid reservoir and provided with a through hole, the through hole in communication with a storage cavity of the liquid reservoir; and a valve element having air permeability and including an oleophobic material layer adjacent to the storage cavity, and a semi-permeable membrane connected to an end of the oleophobic material layer away from the storage cavity, the oleophobic material layer filling at least a part of the through hole.