Burning Type Heat Source With Segmented Hollow For Flame Containment
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Solution Overview
Problem
Conventional flavor inhalers face challenges in supplying a stable heat amount during puffs while preventing a gas lighter flame from entering the burning type heat source, which can lead to uneven heating and compromised flavor inhalation.
Innovation Solution
A burning type heat source with a single longitudinal hollow extending along a direction, featuring a first hollow with a cross-sectional area of 1.77 mm² or more and a second hollow at the non-ignition end with a smaller cross-sectional area, configured to reduce air contact and restrict flame entry, is designed. The heat source has an outer layer of flammable material and an inner layer of nonflammable material, with specific dimensions and ratios to control heat distribution and flame containment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a single longitudinal hollow with uniform cross-section is used, then heat supply stability during puffs is improved, but flame from gas lighter easily enters the hollow causing harmful effects
Solution Approach 1:
The single longitudinal hollow is divided into two segments: a first hollow with a larger cross-sectional area near the ignition end, and a second hollow with a smaller cross-sectional area extending toward the non-ignition end. This segmentation allows the first hollow to accommodate the ignition flame while the second hollow maintains stable heat supply with reduced flame entry risk
Solution Approach 2:
Different sections of the longitudinal hollow are given different cross-sectional areas to serve different functions. The first hollow has a larger area to handle ignition, while the second hollow has a smaller area to prevent flame propagation and maintain stable burning during puffs
2Object-affected harmful factors
If the first cross section area is increased to prevent flame entry, then flame containment is improved, but ventilation resistance increases reducing puff efficiency
Solution Approach 1:
The hollow is segmented into two parts with different cross-sectional areas. The first hollow has a larger area to contain the ignition flame effectively, while the second hollow has a smaller area to maintain low ventilation resistance during puffing, thus balancing flame containment with ventilation efficiency
Solution Approach 2:
The cross-sectional area parameter is changed along the length of the hollow, transitioning from a larger area in the first hollow to a smaller area in the second hollow. This parameter variation optimizes both flame containment capability and ventilation efficiency at different stages of the burning process
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 design ensures a stable heat supply throughout puffs and effectively prevents gas lighter flames from entering, maintaining flavor quality and reducing ventilation resistance.
Implementation Method 1
a burning type heat source extending along a first direction from an ignition end toward a non-ignition end
Implementation Method 2
an inner layer of nonflammable material, with specific dimensions and ratios to control heat distribution and flame containment
Data Source
AI summary
A burning type heat source (50) has a single longitudinal hollow (51) extending along the first direction (D1). The longitudinal hollow (51) includes: a first hollow (51A) having a first cross section area; and a second hollow (51B) having a second cross section area smaller than the first cross section area. The first cross section area of the first hollow (51A) is 1.77 mm2 or more.