Vaporizer Cartridge Microfluidic Venting for Wick Feed Stability
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Solution Overview
Problem
Vaporizer devices face inefficiencies in vaporizing vaporizable materials due to vacuum formation in the reservoir, which reduces the effectiveness of the wick's capillary action, leading to incomplete vaporization and waste of material.
Innovation Solution
A vaporizer cartridge design featuring a collector with microfluidic features and a diaphragm to regulate pressure differentials, ensuring consistent airflow and vaporizable material exchange, coupled with a heating element and wicking element to enhance vaporization efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a wick is used to draw vaporizable material into the vaporization chamber via capillary action, then the vaporization process is enabled, but vacuum formation in the reservoir reduces the effectiveness of capillary action and prevents complete material drawout
Solution Approach 1:
The patent extracts the harmful vacuum pressure effect from the reservoir by introducing a pressure equalization channel that connects the reservoir to the external environment. This allows atmospheric pressure to enter the reservoir and counterbalance the vacuum formed during material drawout, thereby maintaining effective capillary action throughout the entire reservoir and enabling complete material extraction without waste.
Solution Approach 2:
The patent introduces atmospheric pressure as an intermediary force that mediates between the vacuum created by material removal and the capillary forces needed for continuous material drawout. By allowing external atmospheric pressure to enter the reservoir through the pressure equalization channel, the system maintains a pressure balance that sustains effective wick operation until complete material depletion.
2Quantity of substance
If the reservoir pressure is reduced during material drawout, then material is drawn into the vaporization chamber, but the vacuum created acts against capillary action and reduces drawing effectiveness
Solution Approach 1:
The patent applies the counterweight principle by introducing atmospheric pressure into the reservoir to counterbalance the vacuum pressure formed during material drawout. The pressure equalization channel allows external atmospheric pressure to act as a counterforce against the vacuum, maintaining a pressure environment that supports continuous and effective capillary action throughout the material depletion process.
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 design maintains consistent pressure within the reservoir, improving the effectiveness of vaporization by ensuring all material is drawn into the vaporization chamber, reducing waste, and enhancing overall device performance.
Implementation Method 1
the pressure inside the reservoir is reduced, thereby creating a vacuum and acting against the capillary action
Implementation Method 2
heating the vaporizable material in a vaporization chamber (or a heater chamber) to cause the vaporizable material to be converted to the gas (or vapor) phase
Data Source
Figure 1
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Figure 2B
AI summary
A cartridge may include a cartridge, a reservoir, a heating element, and a wicking element. The housing may include a first housing segment coupled with a second housing segment. A portion of the cartridge housing may form a wick housing. The reservoir may include a collector having an overflow channel with microfluidic features configured to provide a constriction point at which a meniscus forms to prevent air entering the reservoir from passing the vaporizable material in the overflow channel. The heating element may include a heating portion disposed inside the wick housing and a contact portion extending outside of the wick housing. The wicking element may be disposed inside the wick housing and proximate to the heating portion of the heating element. The wicking element may be in fluid communication with the reservoir and configured to draw the vaporizable material from the reservoir for vaporization by the heating element.