Planar Heating Element With Variable Resistance For Aerosol Control
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Solution Overview
Problem
Existing non-combustible aerosol delivery systems lack effective control over aerosol particle size and total aerosol production, which is crucial for simulating a specific smoking experience in e-cigarettes and similar products.
Innovation Solution
A non-combustible aerosol delivery system with a planar aerosol generating component suspended in a chamber, featuring a temperature profile with a negative gradient along a portion of the flow path, and a capillary structure with varying capillarity and electrical resistance to optimize aerosol generation and delivery.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a uniform heating element is used in the aerosol generating chamber, then the device structure is simple, but the control over aerosol particle size and total aerosol production is poor
Solution Approach 1:
The heating element is designed with spatially varying properties including variable electrical resistance, variable thickness, and variable material composition across its surface. This creates localized temperature variations that control aerosol particle size and production at different regions of the heating element, achieving precise aerosol characteristics without complex external control systems.
2Productivity
If the heating element dissipates equal energy across its surface, then the manufacturing is simple, but the aerosol generation efficiency and particle size distribution cannot be optimized
Solution Approach 1:
The heating element incorporates regions with different energy dissipation characteristics through variable electrical resistance, thickness, and material properties. Upstream regions dissipate different amounts of energy compared to downstream regions, optimizing aerosol generation efficiency and controlling particle size distribution across the heating surface without requiring complex external energy distribution systems.
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 allows for improved control over aerosol particle size and total aerosol production, enhancing the user experience by providing a consistent and efficient aerosol delivery.
Implementation Method 1
the aerosol generated is a condensation aerosol whereby an aerosolizable material is first vaporized
Implementation Method 2
an aerosol which results from the atomization of the aerosolizable material
Implementation Method 3
The aerosol generating component may be configured with a capillary structure at an upstream portion
Implementation Method 4
an upstream portion of the aerosol generating component may be configured to have a relatively greater electrical resistance
Data Source
AI summary
The present disclosure relates to an article for use with an electrically operated non-combustible aerosol delivery system, the article including a generally planar aerosol generating component suspended within an aerosol generating chamber, the chamber having one or more air inlets and one or more outlets defining a flow path therebetween, wherein during activation of the aerosol generating component a first temperature profile having a negative gradient is established along a portion of the flow path from inlet to outlet.