Sheet Heating Element Assembly for Precise Aerosol Substrate Dosing
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing aerosol generating systems face challenges in controlling and repeatably delivering a predetermined amount of vaporized aerosol-forming substrate for consistent aerosol production.
Innovation Solution
A vaporizing assembly comprising a sheet heating element with spaced-apart delivery device, utilizing a fluid-permeable mesh of electrically conductive fibers to heat and volatilize liquid aerosol-forming substrate, combined with a micropump for on-demand delivery and a control unit for precise activation timing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a wick with fibers is used to supply liquid aerosol-forming substrate to the heating element, then the substrate can be delivered continuously, but the amount of substrate supplied cannot be precisely controlled
Solution Approach 1:
The invention extracts the liquid aerosol-forming substrate from the wick and delivers it as a discrete droplet or spray directly to the heating element, separating the substrate supply function from the wick structure. This allows precise control of the substrate amount while maintaining continuous delivery capability through the micropump system.
Solution Approach 2:
The invention replaces the passive mechanical wick-based capillary action system with an active electronically-controlled micropump and spray nozzle system. This substitution enables precise electronic control of the substrate amount delivered to the heating element while maintaining continuous supply capability.
2Loss of energy
If the delivery device is positioned close to the heating element for efficient vaporization, then energy loss is reduced, but control over the amount of substrate is compromised
Solution Approach 1:
The invention introduces a spray nozzle as an intermediary component between the micropump and the heating element. The nozzle precisely controls the substrate delivery amount and directs it onto the heating element surface, enabling both efficient energy transfer during vaporization and precise control of the substrate amount.
3Device complexity
If a traditional heating element is used, then the structure is simple, but the uniformity of substrate vaporization is insufficient
Solution Approach 1:
The invention uses a mesh heating element with uniformly distributed heating zones that contact the delivered liquid substrate across multiple locations simultaneously. This local quality distribution ensures uniform vaporization across the entire substrate amount, improving aerosol consistency while maintaining relatively simple overall structure.
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
Enhances control and repeatability of aerosol generation by uniformly distributing and vaporizing a predetermined amount of aerosol-forming substrate, improving consistency and efficiency in aerosol production.
Implementation Method 1
a heating element including a sheet heating element including a plurality of electrically conductive fibers
Implementation Method 2
The heating element is configured to heat the delivered liquid aerosol forming substrate to a temperature sufficient to volatilize at least a part of the delivered liquid aerosol-forming substrate
Implementation Method 3
a delivery device configured to deliver the liquid aerosol-forming substrate from the liquid storing portion to the heating element
Data Source
AI summary
A vaporizing assembly for an aerosol generating system includes a sheet heating element and a delivery device configured to deliver a liquid aerosol-forming substrate from a liquid storing portion to the sheet heating element. The sheet heating element is spaced apart from the delivery device and is configured to heat the delivered liquid aerosol forming substrate.