Multi-Element Heating Layout for Uniform Heat-Not-Burn Aerosolization
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Heat-not-burning devices suffer from non-uniform heating, energy waste, and reduced battery life due to uneven heating of tobacco articles, leading to burnt taste and insufficient aerosol production.
Innovation Solution
A heat-not-burning device with uniformly arranged heating elements and a control assembly that independently controls each element, optimizing heating based on cumulative and total puff duration to ensure uniform heating and reduce energy waste.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single heating element is used in the center of the tobacco article, then the device structure is simple, but heating uniformity deteriorates causing burnt taste and toxic substance release
Solution Approach 1:
The single central heating element is divided into multiple heating elements (first heating element and second heating element) positioned at different locations. Each heating element independently heats different regions of the tobacco article, preventing local overheating and ensuring uniform heating across the entire article.
Solution Approach 2:
Different heating elements are positioned to provide localized heating to specific regions of the tobacco article. The first heating element heats one region while the second heating element heats another region, ensuring each local area receives appropriate heat without causing burnt taste or toxic substance release.
2Device complexity
If a single heating element is used, then the device structure is simple, but energy utilization deteriorates causing energy waste and reduced battery life
Solution Approach 1:
The heating function is segmented across multiple heating elements, allowing each element to heat a specific region of the tobacco article efficiently. This prevents energy waste from attempting to heat the entire article from a single central point, as each heating element operates at optimal efficiency for its local region.
3Productivity
If heating temperature is increased to ensure aerosol production, then aerosol generation is improved, but toxic substance release increases
Solution Approach 1:
The heating task is divided among multiple heating elements, each operating at controlled temperatures to generate aerosol from their respective regions. This distributed heating approach ensures complete aerosol generation without requiring excessive temperatures that would cause toxic substance release.
Solution Approach 2:
Each heating element provides localized heating at appropriate temperatures for aerosol generation. This prevents any single region from overheating and releasing toxic substances, while collectively ensuring complete aerosol production from the entire tobacco article.
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
Improves heating uniformity, reduces energy waste, and extends battery life by ensuring all tobacco articles are fully heated without overheating, enhancing user experience and energy utilization.
Implementation Method 1
The heating element is usually built inside of the center of the tobacco article. The heating element made of metal circuits printed on ceramics, which generate heat through the Joule effect after being energized
Data Source
Figure 1~2
Figure 3~4
Figure 5~6
AI summary
A heat-not-burning device(100) and its heating method. The device(100) includes a housing(10), a plurality of heating elements(50), and a control assembly(30). The housing(10) has an accommodating cavity(101); the plurality of heating elements(50) are uniformly mounted on the cavity wall of the accommodating cavity(101) to pierce into the aerosol generating article, which can increase the contact area between the heating elements(50) and the aerosol generating article and help improve the heating uniformity of the aerosol generating article. The control assembly(30) is mounted on the housing and independently electrically connected to each heating element(50). The control assembly(30) is configured to independently control the heating of each heating element(50), which facilitates sequentially and individually controlling one or more heating elements(50) to heat according to the analysis and calculation results of the cumulative heating duration and the total puff duration. This can reduce the heating duration of a single heating element(50) and the heating duration of the part of the aerosol generating article corresponding to each heating element(50), help avoid overheating of part of the aerosol generating article and energy waste, and contribute to improving the energy utilization rate and battery life of the entire device(100).