Manual Compression Liquid Delivery for Aerosol Generators
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Solution Overview
Problem
Existing electronic devices that use heated capillary aerosol generators for liquid delivery face challenges in battery life, evaporation, and flavor consistency due to the need for electromechanical pumps and wicks, which also lead to temperature fluctuations and air entrainment.
Innovation Solution
A manually operated electronic article with a compressible elastomeric liquid supply and capillary tube, where manual compression pumps liquid and activates a heater, eliminating the need for electromechanical pumps and wicks, and positioning air inlets downstream of the heater to reduce temperature fluctuations, while maintaining flavor consistency and protecting the liquid from evaporation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If electromechanical pumps are used to deliver liquid, then liquid delivery is automated, but battery life is reduced and device complexity increases
Solution Approach 1:
The patent removes the electromechanical pump from the system entirely, replacing it with a manual compression mechanism. This extraction of the problematic component eliminates battery consumption by the pump while maintaining liquid delivery functionality through user activation.
Solution Approach 2:
The system uses manual user input (compression of the liquid supply) to drive the liquid delivery process, making the system self-service in the sense that it requires no external power source for pumping. The user's mechanical input directly replaces the electromechanical function.
2Ease of operation
If wicks are used for liquid transport, then liquid can be delivered to the capillary, but air entrainment occurs and flavor consistency deteriorates
Solution Approach 1:
The patent removes the wick component from the system, replacing capillary-driven liquid transport with direct compression-driven flow through a valve system. This eliminates the air entrainment problem associated with wicks while maintaining reliable liquid delivery to the heating element.
3Quantity of substance
If air inlets are positioned upstream of the heater, then air can be supplied for aerosol generation, but temperature fluctuations increase
Solution Approach 1:
The patent inverts the conventional arrangement by positioning air inlets downstream of the heater rather than upstream. This reversal allows the air to be heated as it passes through the heating element, ensuring stable temperature conditions for aerosol generation while still providing adequate air supply.
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 solution extends battery life, maintains flavor consistency, reduces temperature fluctuations, and prevents air entrainment, ensuring continuous and efficient aerosol production without the need for wicks or electromechanical components.
Implementation Method 1
a heater operable to heat the capillary tube to a temperature sufficient to at least initially volatilize liquid material contained within the capillary tube
Implementation Method 2
The heated capillary volatilizes a liquid such as by way of the teachings set forth in U.S. Pat. No. 5,743,251
Implementation Method 3
a liquid supply formed of an elastomeric material and containing a liquid material, the liquid supply adapted to be manually compressed so as to pump liquid material from the liquid supply and through an outlet of the liquid supply
Data Source
AI summary
The electronic article includes an outer housing extending in a longitudinal direction, a reservoir having an outlet and being formed of a compressible elastomeric material, the reservoir being a main supply reservoir configured to contain a liquid. The reservoir is at least partially contained within the outer housing. The article includes a capillary tube having an inlet and an outlet, the inlet of the capillary tube being in fluid communication with the outlet of the reservoir. The article further includes a heater configured to heat and at least initially volatilize the liquid in the capillary tube. The reservoir is configured to be manually compressed to pump the liquid from the reservoir into the capillary tube.