Fuel Can Double-Cap Sealing With Wick Fixing Tray
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Solution Overview
Problem
Existing fuel cans with protective covers are prone to damage, have poor sealing performance, and cannot recover leaked fuel, leading to material waste and safety risks.
Innovation Solution
A fuel can design featuring a double cap system with a ring-pull cap and sealing cap, a tray with fixing mouths for the wick, and air and reflux holes to prevent volatilization and allow fuel recovery, along with a tray structure that supports the wick and includes an annular support table for enhanced sealing and stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a protective cover is used to prevent fuel leakage, then sealing performance is improved, but the structure becomes larger and more prone to collision and damage
Solution Approach 1:
The protective cover function is extracted and integrated into the tray structure itself. The tray's periphery is connected to the can body inner wall, forming an integrated sealing structure that eliminates the need for a separate protective cover, thereby reducing overall structure size while maintaining sealing performance.
Solution Approach 2:
The tray and protective cover functions are merged into a single integrated structure. The tray serves both as the fuel containment platform and as the protective sealing element, combining multiple functions into one component to reduce complexity and collision risks.
2Reliability
If a protective cover is used to prevent fuel leakage, then sealing performance is improved, but the cover is easy to be damaged during storage and transportation
Solution Approach 1:
The protective cover function is extracted from the traditional separate cover component and integrated into the tray structure. The tray's integrated design with connections to the can body provides structural strength and durability during storage and transportation, eliminating the weakness of separate protective covers.
3Ease of operation
If the fixing mouth opening is large to facilitate wick installation, then ease of operation is improved, but fuel volatilization increases and flame uniformity deteriorates
Solution Approach 1:
The fixing mouth is designed with a small opening that wraps around the wick, creating a localized sealing structure. This local quality change ensures that the opening is just large enough for wick installation but small enough to prevent fuel volatilization and maintain uniform flame combustion.
4Reliability
If fuel leakage occurs, then safety risks increase, but without a reflux hole the leaked fuel cannot be recovered leading to material waste
Solution Approach 1:
The reflux hole creates a feedback mechanism where leaked fuel automatically flows back into the can body through gravity and pressure differential. This feedback system prevents fuel loss and reduces safety risks by containing the leaked fuel within the system rather than allowing it to escape externally.
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 ensures repeated use, reduces material loss, maintains a uniform flame, prevents explosions, and recovers leaked fuel, enhancing safety and usability.
Implementation Method 1
the air hole self-adjusts the pressure of the fuel cavity, avoiding explosion resulted from internal overheating of the fuel cavity during combustion
Implementation Method 2
the reflux hole enables the leaked liquid fuel to flow back into the can, reducing contamination and material waste
Implementation Method 3
a wick with a lower end immersed in the liquid fuel
Data Source
AI summary
A fuel can includes a can body, the can body contains liquid fuel and a wick with its lower end immersed in the liquid fuel, and a top cover is provided at a top of the can body. The top cover includes a ring-pull cap and a sealing cap, the ring-pull cap consists of an outer ring and a tear-off piece, the outer ring is connected to an upper opening of the can body in a sealing manner, and the sealing cap is buckled at a top end of the outer ring; a tray is provided at an upper end of the can body, and a periphery of the tray is connected to an inner wall of the can body in a sealing manner, and at least one fixing mouth for fixing the upper end of the wick provided in a middle of the tray.