Segmented Coil Heater for E-Cigarette Wick Burning
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Solution Overview
Problem
E-cigarette devices often experience wick drying and burning due to the proximity of the heater to the wick, leading to increased maintenance costs and wick replacement frequency.
Innovation Solution
A heater design featuring a coil with multiple coiled and non-coiled regions, along with multiple wicking regions arranged to feed liquid along different pathways, disperses heat energy evenly and prevents over-concentration, reducing the likelihood of wick drying and burning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If the heater is placed proximal to the wick to efficiently heat the liquid, then the heating efficiency is improved, but the wick dries out and burns more quickly
Solution Approach 1:
The coil is divided into multiple coiled regions with non-coiled regions between them, creating segmented heating zones. This segmentation allows different parts of the wick to experience different heat intensities, preventing any single point from overheating and burning out the wick material.
Solution Approach 2:
Different regions of the coil have different heating characteristics - coiled regions provide concentrated heating while non-coiled regions provide spacing and reduced heat intensity. This local variation in heat distribution ensures that the wick receives adequate heat for vaporization without localized overheating that would cause burning.
2Stability of the object's composition
If multiple wicking regions feed liquid along different pathways to the heating element, then even heat distribution is achieved, but the device complexity increases
Solution Approach 1:
The single coil structure is segmented into multiple coiled regions connected by non-coiled regions, creating multiple heating zones that correspond to multiple wicking regions. This segmentation enables different pathways for liquid to reach different heating zones, improving heat distribution uniformity without requiring entirely separate heating elements.
Solution Approach 2:
Multiple wicking regions and multiple coiled regions are integrated into a single unified heater assembly. The non-coiled regions serve as both structural connectors and thermal isolators, allowing the system to achieve complex heat distribution patterns while maintaining a relatively simple overall structure.
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 design reduces the frequency of wick replacement and operating costs by ensuring even heat distribution and maintaining liquid flow, preventing wick drying and burning.
Implementation Method 1
a heating element, the heating element comprising a coil
Implementation Method 2
heated to vaporize the liquid to produce an inhalable vapor and/or aerosol
Implementation Method 3
Devices that heat liquid during use often have wicks for wicking liquid from a liquid storage to a heater
Data Source
AI summary
A heater for use in an aerosol generating device is disclosed. The heater includes a heating element comprising a coil. The coil has at least two coiled regions and one non-coiled region. The heater includes a pair of wicks arranged to feed e-liquid to the heating element from different directions. A device for generating an inhalable medium including a heater for volatilizing liquid is also disclosed.