Firelighter Block with Protruding Ignition Element
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Solution Overview
Problem
Existing firelighter blocks are difficult to ignite without being held by hand, pose safety risks due to flammable materials, and have inefficient manufacturing processes that are costly and hazardous.
Innovation Solution
A firelighter block manufactured using a solid paraffin-based mixture compressed between dies, with convex contact faces that allow easy ignition from any direction and stable combustion, eliminating the need for hand-held ignition and reducing hazardous material handling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a firelighter block is made with a protruding corner for easy ignition, then ignition ease is improved, but the user can easily get burned due to flammable material traces remaining in the user's hands
Solution Approach 1:
The firelighter block is divided into distinct functional zones: a non-flammable base body and a separate flammable protruding element. This segmentation allows the user to handle the non-flammable base while the flammable protrusion can be safely ignited without burning the user's hands, as the flammable material is isolated in the protrusion rather than coating the entire surface including the user contact areas.
Solution Approach 2:
The non-flammable base body acts as an intermediary between the user's hands and the flammable protruding element. Users interact with the non-flammable base for handling and stability, while the flammable protrusion serves as the ignition zone. This intermediary structure prevents direct contact between the user's hands and flammable material traces, eliminating burn risks while maintaining easy ignition capability.
2Ease of manufacture
If a firelighter block is made by splitting grooved MDF panel, then manufacturing capability is improved, but the process is long, expensive, and dangerous due to handling of highly flammable liquid products
Solution Approach 1:
The invention changes the physical state parameter of paraffin from liquid (molten) to solid. Instead of using molten paraffin that requires dangerous handling and complex cooling processes, the invention uses solid paraffin that can be safely handled at ambient temperature. This parameter change eliminates the safety risks associated with hot liquid paraffin while maintaining the flammability needed for the protruding ignition element.
Solution Approach 2:
The invention replaces the complex, expensive, and dangerous MDF grooving and molten paraffin immersion process with a simpler method using solid paraffin and a molding compound. This new process is less expensive, faster, and safer, eliminating the need for dangerous liquid handling and complex manufacturing steps while achieving the same functional result.
3Ease of manufacture
If a firelighter block is made with random irregularities on lateral faces, then manufacturing simplicity is improved, but ignition predictability deteriorates
Solution Approach 1:
The invention applies local quality by creating a specific geometric feature (protruding element) at a specific location (top surface center) while maintaining simplicity in other areas. The protruding element provides predictable ignition characteristics, while the rest of the block maintains manufacturing simplicity. This localized geometric modification ensures reliable ignition without requiring complex manufacturing processes.
4Strength
If a firelighter block uses medium-density fiberboard with toxic glues, then structural integrity is improved, but harmful emissions increase
Solution Approach 1:
The invention uses a composite structure combining a non-flammable base body (which can be made from safe, non-toxic materials) with a flammable protruding element (paraffin or similar safe flammable material). This composite approach eliminates the need for toxic MDF glues in the base structure while maintaining structural integrity, and uses safer flammable materials in the protrusion compared to traditional toxic glue-based systems.
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 solution enables quick, safe, and efficient ignition of the firelighter block from any angle, with reduced manufacturing costs and risks, ensuring consistent and stable combustion.
Implementation Method 1
Compressing the mixture between the dies causes a slight heating of the paraffin within the mixture at the point of contact with the dies, promoting the formation of a coherent surface layer
Implementation Method 2
Compressing the mixture between the dies causes a slight heating of the paraffin within the mixture at the point of contact with the dies, promoting the formation of a coherent surface layer
Implementation Method 3
a firelighter block flammable by a user to initiate the combustion of materials for a fire
Data Source
Figure 1~2
Figure 3~4
Figure 5
AI summary
A method for manufacturing a user-ignitable fire starter block (B) to initiate the combustion of materials for an open or closed fire. The fire starter block (B) comprises a compressed mixture of wood chips, or sawdust, and powdered paraffin. The fire starter block (B) has at least one contact face (1) with a prominent bearing area (2) and is shaped to rest on the bearing area (2) in stable equilibrium on a plane (3), with a portion (P1, P2) of the contact face (1) directed towards said plane (3) and remaining away from said plane (3).