Absorbent Element Layout for E-Cigarette Liquid Leak Protection
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Solution Overview
Problem
Electronic vapor provision devices, such as e-cigarettes, face issues with source liquid leakage due to construction vulnerabilities, leading to unvaporized liquid escaping and potentially causing short circuits or corrosion, especially when it reaches the battery or control electronics.
Innovation Solution
Incorporating an absorbent element made from materials like polypropylene and polyethylene, positioned upstream of the atomizer along the air flow path or between the atomizer and electrical power supply, to collect and absorb any escaped source liquid, preventing it from reaching the electrical components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the reservoir is constructed with multiple sections and joints to enable refilling and assembly, then the device is more adaptable and easier to manufacture, but source liquid can escape through these joints and vulnerable points
Solution Approach 1:
A seal element is introduced as an intermediary component between the reservoir body and cap to prevent liquid leakage. The seal element acts as a mediator that maintains the adaptability of refilling while blocking the leakage path through the joint interface.
Solution Approach 2:
A flexible membrane or thin film seal is used at the joint between reservoir sections. This flexible seal accommodates assembly tolerances and pressure changes while preventing liquid escape through the joint, thus maintaining both adaptability and leakage resistance.
2Ease of operation
If the wicking element penetrates the reservoir wall to deliver liquid to the heating element, then vaporization function is enabled, but liquid can escape around the wicking element at the penetration point
Solution Approach 1:
The reservoir wall is given different properties at different locations: it remains permeable or open where the wicking element needs to pass through for liquid delivery, but is sealed or reinforced at the penetration point to prevent liquid escape. This local differentiation allows the wicking function while preventing leakage.
Solution Approach 2:
A sealing element or grommet is introduced as an intermediary at the wicking element penetration point. This mediator allows the wicking element to pass through while preventing liquid from escaping around it, thus maintaining vaporization function without compromising leakage resistance.
3Ease of manufacture
If the reservoir is designed with open joints and connections for component assembly, then manufacturing is easier and device is more adaptable, but source liquid can escape through these open connections
Solution Approach 1:
Seal elements are pre-installed or pre-positioned in the reservoir joints and connections before final assembly. This preliminary action ensures that the seals are in place to prevent leakage while maintaining the ease of assembly, as the sealing function is already prepared rather than requiring complex sealing operations during assembly.
Solution Approach 2:
Seal elements serve as intermediaries at all joint and connection points between components. These mediators enable easy assembly by providing a simple interface while simultaneously preventing liquid escape through the connections, thus resolving the contradiction between assembly ease and leakage resistance.
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 inhibits the escape of source liquid from the device, reducing the risk of short circuits and corrosion, while maintaining airflow and vaporization functionality.
Implementation Method 1
an absorbent element to collect source liquid escaped from the reservoir
Data Source
AI summary
A component of an electronic vapor provision device with a reservoir for storing source liquid, an atomizer for vaporizing source liquid from the reservoir and delivering vapor into an air flow path through the device, and an electrical power supply for providing electrical power to the atomizer comprises an absorbent element to collect source liquid escaped from the reservoir and located so as to be upstream of the atomizer with respect to an air flow direction along the air flow path when the component is assembled into the electronic vapor provision device.