Induction Heater Assembly Layout for Compact Aerosol Heating
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Solution Overview
Problem
Induction heating type aerosol generating devices face challenges in miniaturization due to the need for a separate space for the heater outside the bobbin, leading to increased device size and reduced heating efficiency due to the separation distance between the heater and susceptor.
Innovation Solution
A heater assembly for aerosol generating devices that includes a support unit surrounding the aerosol generating article, with the heater overlapping the support unit to minimize space and reduce the separation distance, allowing for miniaturization and improved heating efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the heater is wound along the outer surface of the bobbin, then the heater has space to be arranged, but the device size increases and heating efficiency decreases
Solution Approach 1:
The heater is positioned inside the bobbin rather than on the outer surface, nesting the heater within the existing bobbin structure. This eliminates the need for external heater mounting space while maintaining proper heating function through the bobbin walls.
Solution Approach 2:
The invention transitions from a two-dimensional arrangement (heater on outer surface) to a three-dimensional arrangement (heater inside bobbin), utilizing the internal volume of the bobbin structure to house the heater and reduce overall device footprint.
2Ease of manufacture
If the heater is wound on the outside of the bobbin, then the heater has space to be arranged, but the separation distance between heater and susceptor increases
Solution Approach 1:
The heater is nested inside the bobbin structure, placing it in close proximity to the susceptor through the bobbin walls. This eliminates the separation distance problem while maintaining manufacturability by utilizing the bobbin's internal space.
Solution Approach 2:
Instead of placing the heater outside the bobbin (conventional approach), the invention inverts the arrangement by placing the heater inside the bobbin, thereby reducing the distance to the susceptor and improving heating efficiency.
3Ease of manufacture
If a separate space is prepared for the heater outside the bobbin, then the heater can be arranged, but the device becomes larger
Solution Approach 1:
The heater arrangement space is merged with the bobbin internal volume rather than being separate from it. This combines two functions (bobbin support and heater housing) into one structure, eliminating the need for additional external space.
Solution Approach 2:
The heater is nested within the bobbin structure, utilizing the bobbin's internal cavity as the heater housing. This eliminates the need for separate heater arrangement space and reduces the overall device length.
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 heater assembly achieves miniaturization and enhances heating efficiency by reducing the space occupied by the heater and minimizing the separation distance between the heater and susceptor.
Implementation Method 1
an induction heating type aerosol generating device that heats an aerosol generating material by generating a magnetic field to heat a susceptor
Implementation Method 2
a heater that generates a magnetic field to heat a susceptor
Data Source
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AI summary
A heater assembly for an aerosol generating device includes a body including an accommodation space for accommodating an aerosol generating article, a first cover coupled to the body and including an article insertion portion into which the aerosol generating article is inserted, a support unit provided inside the body and the first cover and surrounding the aerosol generating article accommodated in the accommodation space, and a heater provided between an inner surface and an outer surface of the support unit and configured to heat the aerosol generating article by applying a magnetic field to a susceptor in the accommodation space, wherein the heater completely overlaps the support unit, based on a second direction crossing a first direction in which the support unit extends.