Microwave-Responsive Aerosol Articles for Uniform Heating and Capsule Release
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Solution Overview
Problem
Existing aerosol generating systems heat aerosol generating articles unevenly, leading to inconsistent delivery of active ingredients and flavoring materials, require preheating times, and pose challenges in crushing flavor capsules due to varying shell properties.
Innovation Solution
An aerosol generating article that includes a microwave-responsive capsule with a core and shell structure, where the capsule is crushed by microwaves, ensuring uniform heating and consistent delivery of active ingredients and flavoring materials without user intervention.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If electrical resistance heating or induction heating is used to heat the aerosol generating article, then the article can be heated to generate aerosol, but the heating is uneven causing inconsistent delivery of active ingredients
Solution Approach 1:
The patent replaces traditional electrical resistance heating or induction heating with dielectric heating using microwaves. This substitution enables uniform volumetric heating throughout the aerosol generating article, eliminating the uneven temperature distribution that occurs with conventional heating methods and ensuring consistent delivery of active ingredients.
Solution Approach 2:
The patent changes the heating parameter from surface-based electrical or induction heating to volumetric dielectric heating via microwaves. This parameter change allows the entire article to be heated uniformly from the inside, resolving the heating uniformity issue and improving the reliability of active ingredient delivery.
2Productivity
If heat conduction from heating element is used, then aerosol can be generated, but preheating time is required before sufficient temperature is reached
Solution Approach 1:
The patent replaces heat conduction-based heating with direct dielectric heating using microwaves. This substitution eliminates the need for preheating time because microwaves directly heat the aerosol generating material throughout its volume, immediately reaching the temperature required for aerosol generation without the delay inherent in conductive heating.
Solution Approach 2:
The patent incorporates microwave-responsive materials into the capsule structure that pre-absorb microwave energy and convert it to heat internally. This preliminary preparation of the heating mechanism within the capsule itself eliminates the need for external preheating, allowing immediate aerosol generation upon microwave exposure.
3Strength
If traditional capsule with shell is used to contain flavoring material, then the material is protected, but user has difficulty crushing the capsule depending on shell properties
Solution Approach 1:
The patent replaces mechanical capsule crushing by the user with microwave-induced capsule disruption. The microwave-responsive material inside the capsule absorbs microwave energy, generates heat, and causes the capsule to rupture automatically through thermal expansion and pressure buildup, eliminating the need for manual crushing regardless of shell strength.
Solution Approach 2:
The patent utilizes phase transitions of the microwave-responsive material (such as water or other volatile substances) within the capsule. When exposed to microwaves, the material undergoes rapid heating and phase change from liquid to gas, creating internal pressure that automatically ruptures the capsule shell and releases the flavoring material, making the process independent of shell mechanical properties.
4Reliability
If capsule is used to prevent flavoring material loss, then material is protected, but flavoring material has high volatility causing loss during handling
Solution Approach 1:
The patent uses a composite capsule structure containing both the flavoring material and microwave-responsive material. This composite design allows the capsule to remain intact during handling and storage, protecting the volatile flavoring material from loss, while enabling controlled release through microwave-induced heating that overcomes the volatility issue by rapid vaporization only when needed.
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 solution provides uniform heating of the aerosol generating article, consistent delivery of active ingredients, and efficient release of flavoring materials, eliminating preheating times and user intervention for capsule crushing.
Implementation Method 1
an aerosol generating article and an aerosol generating system capable of generating aerosols by being heated by a dielectric heating method
Data Source
AI summary
An aerosol generating article includes an aerosol generating material that is heated by exposure to microwaves and a first capsule that is crushed by exposure to the microwaves, wherein the first capsule includes a first core including a first material and a first microwave-responsive material, and a first shell surrounding the first core.