Combustible Heat Source Composition for Fast Ignition and Long Burn
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Solution Overview
Problem
Existing combustible heat sources for smoking articles, primarily composed of charcoal, face challenges with ignitability due to their difficulty in igniting easily.
Innovation Solution
A combustible heat source composition comprising carbon powder, an organic binder, and an ignition accelerator with a specific ratio of potassium nitrate and reducing sugar, which facilitates ignition and maintains combustion for an extended period.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of stationary object
If charcoal is used as the main component of combustible heat source, then combustion persistency is improved, but ignitability deteriorates
Solution Approach 1:
The patent combines charcoal (providing combustion persistency) with potassium nitrate and reducing sugar (providing ignitability) to create a composite heat source composition. This composite material approach allows the heat source to both ignite easily and sustain combustion for extended periods, resolving the contradiction between ignitability and combustion persistency.
Solution Approach 2:
The patent optimizes the weight ratio of potassium nitrate to reducing sugar at 5:3:2 to achieve optimal ignitability. By carefully controlling the parameters of the ignition accelerator composition, the patent enables easy ignition while maintaining the combustion persistency provided by charcoal.
2Ease of operation
If ignition accelerator is added to improve ignitability, then ease of operation is improved, but composition complexity increases
Solution Approach 1:
The patent specifies precise weight ratios (5:3:2) for potassium nitrate, reducing sugar, and charcoal. By optimizing these parameters, the patent achieves good ignitability while keeping the composition relatively simple and manageable, avoiding excessive complexity.
Solution Approach 2:
The patent uses conventional, readily available materials (charcoal, potassium nitrate, reducing sugar) rather than exotic or complex substances. This approach maintains composition simplicity while achieving the desired ignitability improvement.
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 composition achieves improved ignitability and combustibility, allowing the heat source to ignite within 30 seconds and sustain combustion for 140 seconds or more, with optimal performance at a 5:3:2 weight ratio of potassium nitrate to reducing sugar.
Implementation Method 1
the ignition accelerator comprises potassium nitrate and reducing sugar
Implementation Method 2
combustion may continue for 140 seconds or more
Implementation Method 3
an organic binder
Data Source
Figure 1
AI summary
The present disclosure relates to a combustible heat source composition, and more particularly, to a combustible heat source composition comprising a carbon powder, an organic binder, and an ignition accelerator, wherein the ignition accelerator comprises potassium nitrate and a reducing sugar, and the potassium nitrate and the reducing sugar are contained at a weight ratio of 5 to 3: 2. A smoking article to which a combustible heat source composed of the composition is applied is characterized by having excellent ignitability and combustibility.