Tubular Induction Heater Layout for Uniform Aerosol Heating
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Solution Overview
Problem
Existing smoking alternatives that heat tobacco or aerosol generating materials do not efficiently control the temperature and heating uniformity of the aerosol generating material, leading to inconsistent aerosol quality and user experience.
Innovation Solution
A tubular aerosol provision device with a heater component having an internal diameter of 5 mm to 10 mm, heated by a coil, and an article with an outer layer that maintains the aerosol generating material at a safe distance from the heater, ensuring efficient and uniform heating.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If the heater component has a smaller internal diameter to improve heating efficiency, then the heating speed increases, but the heating uniformity deteriorates
Solution Approach 1:
The patent applies local quality by varying the coil winding density along the length of the tubular heater component. The coil has a first winding density in a first region and a second winding density in a second region, with the second winding density being greater than the first. This non-uniform winding pattern creates localized heating zones that compensate for heat loss to the environment, ensuring uniform temperature distribution throughout the aerosol generating material despite the small internal diameter of the heater component.
2Use of energy by moving object
If the aerosol generating material is positioned closer to the heater component to improve heating efficiency, then the energy transfer increases, but the risk of overheating and harmful factors increases
Solution Approach 1:
The patent introduces an outer layer as an intermediary between the aerosol generating material and the heater component. This outer layer has a thickness of between 0.02 mm and 0.06 mm and acts as a thermal buffer, allowing efficient heat transfer while preventing direct contact and potential overheating. The layer mediates the thermal interaction, ensuring the aerosol generating material receives sufficient heat for vaporization without exceeding safe temperature limits.
3Power
If the coil winding density is increased to improve heating efficiency, then the power output increases, but the energy loss increases
Solution Approach 1:
The patent applies local quality by varying the coil winding density along the length of the tubular heater component. The coil has a first winding density in a first region and a second winding density in a second region, with the second winding density being greater than the first. This non-uniform winding pattern concentrates heating power where needed while reducing energy loss in regions where less heating is required, optimizing the balance between power output and energy efficiency.
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 device efficiently heats the aerosol generating material within the specified temperature range (240°C to 300°C), ensuring consistent aerosol quality and user experience by maintaining the aerosol generating material's uniform temperature and preventing overheating.
Implementation Method 1
a coil extending around the heater component, wherein the coil is configured to heat the heater component
Implementation Method 2
The device efficiently heats the aerosol generating material within the specified temperature range (240°C to 300°C)
Data Source
AI summary
An aerosol provision device comprises a tubular heater component configured to receive an article comprising aerosol generating material, wherein the heater component is heatable by penetration with a varying magnetic field. The device further comprises an inductor coil extending around the heater component, wherein the inductor coil is configured to generate the varying magnetic field. The heater component has an internal diameter of between about 5 mm and about 10 mm.