Induction-Heated Aerosol Rod Structure for Uniform Vapour Generation
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Solution Overview
Problem
Existing aerosol generating devices face challenges in optimizing aerosol characteristics and achieving consistent mass production of aerosol generating articles, particularly in devices using induction heating systems.
Innovation Solution
The design of an aerosol generating article comprising elongate first strips with an aerosol generating material, an elongate second strip as an inductively heatable susceptor, and a wider elongate carrier strip, arranged to form a rod-shaped structure, ensuring effective heat transfer and uniform heating, while allowing for efficient manufacturing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If an induction heating system is used to heat the aerosol generating substrate, then heating efficiency and aerosol generation are improved, but uniform heating and consistent mass production become difficult to achieve
Solution Approach 1:
The patent applies local quality by creating a susceptor layer with specific localized properties - a conductive layer (e.g., metal particles or coating) applied to specific regions of the aerosol generating substrate. This localized conductive layer ensures uniform heat distribution precisely where needed during induction heating, resolving the contradiction between heating efficiency and uniformity by targeting the heating properties to specific areas rather than relying on the entire substrate's uniform properties.
2Reliability
If the aerosol generating article structure is optimized for aerosol characteristics, then aerosol generation quality is improved, but manufacturing complexity and difficulty of mass production increase
Solution Approach 1:
The patent segments the aerosol generating article into distinct functional layers: a substrate layer, a susceptor layer with specific conductivity properties, and an aerosol generating material layer. This segmentation allows each layer to be optimized independently for its specific function while maintaining overall manufacturing simplicity. The susceptor layer can be applied as a separate coating or deposited layer, enabling standardized manufacturing processes that ensure consistent aerosol generation quality across mass production.
3Stability of the object's composition
If a susceptor is added to the aerosol generating article, then heating uniformity is improved, but device complexity and manufacturing steps increase
Solution Approach 1:
The patent merges the susceptor functionality directly into the aerosol generating substrate by applying a conductive layer (such as metal particles, conductive coating, or deposited metal layer) onto the substrate. This integration combines the structural support function of the substrate with the heat generation function of the susceptor, eliminating the need for separate susceptor components and reducing overall device complexity while maintaining heating uniformity.
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 achieves uniform heating of the aerosol generating material, optimizing aerosol generation and facilitating mass production, with improved user acceptance and effective vapour generation.
Implementation Method 1
an induction coil is provided in the device and an inductively heatable susceptor is provided to heat the aerosol generating substrate. Electrical energy is supplied to the induction coil when a user activates the device which in turn generates an alternating electromagnetic field. The susceptor couples with the electromagnetic field and generates heat
Implementation Method 2
heating the aerosol generating material, without burning the aerosol generating material, to volatise at least one component of the aerosol generating material and thereby generate a heated vapour which cools and condenses to form an aerosol for inhalation
Data Source
AI summary
An aerosol generating article includes: a plurality of elongate first strips including an aerosol generating material; at least one elongate second strip including an inductively heatable susceptor material; and at least one elongate carrier strip to which the at least one elongate second strip is adhered. Each of the plurality of elongate first strips has a width which is less than a width of the at least one elongate second strip and a width of the at least one elongate carrier strip is greater than the width of the at least one elongate second strip. The elongate first strips, the at least one elongate second strip and the at least one elongate carrier strip are arranged to form a rod-shaped aerosol generating article.