Plasma Electrode Heater Structure for Fast Aerosol Heating
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Solution Overview
Problem
Existing aerosol generating devices face challenges in quickly reaching target temperatures, leading to prolonged preheating times.
Innovation Solution
The aerosol generating device incorporates a plasma discharge space separated by a partition with plasma electrodes, featuring a tapered portion and a connecting electrode, allowing for rapid temperature changes between 200°C to 600°C without preheating.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If a conventional heater is used in an aerosol generating device, then the device can heat the aerosol generating article, but the preheating time is prolonged and the target temperature is reached slowly
Solution Approach 1:
The patent changes the heating mechanism from conventional resistive heating to plasma discharge heating. This parameter change enables the heater to reach target temperatures (200°C to 600°C) much faster by utilizing plasma's high energy density and direct molecular excitation, eliminating the prolonged preheating time associated with conventional heaters
Solution Approach 2:
The patent replaces the conventional thermal conduction-based heating system with a plasma-based electromagnetic heating system. The plasma electrodes generate plasma discharge that directly energizes the aerosol generating article through electromagnetic interactions, substituting the slow thermal diffusion process with rapid plasma excitation
2Speed
If a plasma discharge space is added to the heater, then the heating speed increases, but the device complexity increases
Solution Approach 1:
The patent implements a nested structure where the plasma electrodes are disposed within the partition that separates the plasma discharge space from the cavity. The partition itself extends along the cavity and includes tapered portions, creating a compact nested arrangement where multiple functional elements (plasma electrodes, partition, cavity) are integrated into each other rather than being separate components
Solution Approach 2:
The partition serving as both a structural separator and a mounting surface for plasma electrodes performs multiple functions. The plasma electrodes themselves serve dual purposes: generating plasma discharge for heating and defining the discharge space boundaries. This multi-functionality reduces the need for additional components, offsetting the added complexity with functional consolidation
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 reduces preheating time and enables efficient temperature control, enhancing the performance of the aerosol generating device.
Implementation Method 1
the heater may include a plasma discharge space, a partition configured to separate the cavity and the plasma discharge space, and a plurality of plasma electrodes disposed on the partition
Data Source
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AI summary
The aerosol-generating device may comprise: a cavity configured to accommodate an aerosol-generating article; and a heater configured to heat the aerosol-generating article, wherein the heater comprises: a plasma discharge space; a partition configured to separate the cavity and the plasma discharge space; and a plurality of plasma electrodes disposed in the partition.