Vapor Provision Apparatus Wick Channel Leakage Control
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Solution Overview
Problem
Electronic vapor provision systems, such as e-cigarettes, face the issue of liquid leakage due to the capillary wick passing through openings in the reservoir wall, which is undesirable for user safety and device reliability.
Innovation Solution
The liquid transport element is arranged within channels that have a cross-section matching the wick, with the channel sidewall defined by the reservoir housing and featuring openings for fluid communication, reducing the risk of leakage while ensuring efficient liquid supply to the vaporizer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If a capillary wick passes through openings in the reservoir wall to transport liquid to the vaporizer, then liquid supply to the vaporizer is enabled, but liquid leakage occurs
Solution Approach 1:
A channel structure is introduced as an intermediary element between the reservoir and the wick. The channel provides a controlled pathway for liquid transport while its sidewall acts as a barrier to prevent leakage. The channel's cross-section matches the wick's cross-section, creating a snug fit that further prevents liquid escape while maintaining capillary action for liquid supply.
2Quantity of substance
If openings are provided in the reservoir wall for wick access, then liquid transport is achieved, but device reliability deteriorates due to corrosion
Solution Approach 1:
The channel serves as a protective intermediary that shields the reservoir wall openings from direct contact with liquid. By routing the wick through this enclosed channel with matching cross-section, the system maintains liquid transport functionality while preventing corrosive liquid from degrading the reservoir structure over time.
3Object-affected harmful factors
If the wick is enclosed in a channel with matching cross-section, then leakage is minimized, but device complexity increases
Solution Approach 1:
The channel structure is integrated with the reservoir housing, with the channel sidewall being at least partly defined by a section of the reservoir housing itself. This merging of components reduces the number of separate parts needed while still achieving the leakage prevention function through the matched cross-section design.
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 effectively minimizes leakage while maintaining the liquid supply to the vaporizer, enhancing user safety and device reliability by enclosing the wick within channels that match its cross-section and providing fluid communication through strategically placed openings.
Implementation Method 1
a capillary wick for transporting liquid from within a liquid reservoir to a vaporizer
Implementation Method 2
a vaporizer in the form of a resistive heating coil. The coil 12 is wrapped around a capillary wick 14... an electric current is passed through the coil 12 so that it is heated and vaporizes a portion of liquid
Data Source
AI summary
Vapor provision apparatus including a reservoir housing defining a reservoir for liquid, a liquid transport element for transporting liquid from the reservoir to a vaporizer for vaporization and a channel for the liquid transport element, wherein the channel has a sidewall at least partly defined by a section of the reservoir housing; wherein the liquid transport element comprises a first portion arranged to deliver liquid to the vaporizer and a second portion extending along the channel, wherein the channel has a cross-section that corresponds with the cross-section of the second portion of the liquid transport element in the channel, and wherein the section of the reservoir housing that defines the sidewall of the channel has one or more openings to provide fluid communication between the liquid transport element in the channel and liquid in the reservoir.