Aerosol Article Susceptor Layout for Induction Heating Efficiency
Solution Overview
Problem
Existing aerosol generating articles face inefficiencies in heating processes, leading to suboptimal aerosol production, as they often rely on burning rather than heating mechanisms, which limits their performance and efficiency.
Innovation Solution
Incorporating a susceptor with a cylindrical shape and specific radii configurations within the aerosol generating article to increase the contact area with the heating medium, utilizing thermally conductive materials like aluminum, gold, and copper, and employing an induction heating system with a variable magnetic field to enhance heating efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If a susceptor is disposed to enclose a portion of the filling material to increase contact area, then heating efficiency is improved, but device complexity increases
Solution Approach 1:
The susceptor is disposed to enclose a portion of the filling material, creating a nested configuration where one component is placed within another. This nesting arrangement increases the contact area between the susceptor and filling material, thereby improving heating efficiency without requiring separate heating mechanisms for different regions.
Solution Approach 2:
The susceptor is configured with a specific geometric shape (cylindrical or rod-like) that extends into the filling material, transitioning from a simple surface contact to a three-dimensional enclosed configuration. This dimensional change maximizes the contact surface area and enables more effective heat transfer throughout the filling material.
2Loss of energy
If multiple concentric susceptors are used to further increase contact area, then heating efficiency is improved, but manufacturing complexity increases
Solution Approach 1:
Multiple susceptors are arranged in a concentric configuration where smaller susceptors are placed within larger ones, similar to nested dolls. This multi-layered nesting structure significantly increases the total contact area with the filling material, enabling more uniform and efficient heating throughout the aerosol generating article.
Solution Approach 2:
The heating function is segmented into multiple independent susceptor components rather than using a single large susceptor. Each susceptor can be manufactured and positioned separately, allowing for modular assembly and enabling the complex concentric arrangement to be constructed from simpler individual elements.
3Productivity
If induction heating with variable magnetic field is employed, then aerosol generation efficiency is improved, but energy consumption increases
Solution Approach 1:
The heating mechanism is replaced from conventional thermal conduction or convection to induction heating using a variable magnetic field. The susceptor, being ferromagnetic or electrically conductive, generates heat directly through electromagnetic induction when exposed to the alternating magnetic field from the coil, eliminating the need for external heat sources and improving heating efficiency.
Solution Approach 2:
A variable magnetic field with adjustable frequency and amplitude is applied to the susceptor, allowing optimization of the heating rate and temperature distribution. By controlling the magnetic field parameters, the system can achieve efficient aerosol generation while managing energy consumption through precise control of the induction heating 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
This configuration significantly improves heating efficiency, resulting in increased aerosol production and efficient manufacturing of aerosol generating articles, while also optimizing battery efficiency and aerosol delivery.
Implementation Method 1
the coil may be configured to generate a variable magnetic field by receiving power from the battery, and the susceptor may be configured to generate heat by the variable magnetic field
Data Source
AI summary
An aerosol generating article includes a first segment which includes: a filling material and a susceptor disposed to enclose a portion of the filling material and be enclosed by another portion of the filling material; and a second segment disposed next to the first segment along a lengthwise direction of the aerosol generating article.