Double-Layer Combustion Device Thermal Insulation
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Solution Overview
Problem
Existing combustion devices with a flame-display combination structure suffer from heat conduction issues, causing the fuel container to become hot and unsafe over time due to high temperatures.
Innovation Solution
A double-layer combustion device design featuring an inner-layer and outer-layer wall with a hollow space in between, where the inner-layer forms a fuel receptacle and a wick is inserted, and the outer-layer is designed to insulate heat effectively, preventing the outer-layer from becoming hot and maintaining fuel safety.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single-layer fuel container structure is used, then the device complexity is low, but the outer surface becomes hot and unsafe due to heat conduction
Solution Approach 1:
The fuel container is divided into two separate layers: an inner-layer wall forming the fuel receptacle and an outer-layer wall spaced from the inner-layer wall to form a hollow insulating space. This segmentation creates thermal isolation between the hot fuel interior and the exterior environment, preventing the outer surface from becoming unsafe to touch while maintaining a relatively simple overall structure.
Solution Approach 2:
The hollow space between the inner-layer wall and outer-layer wall acts as an intermediary thermal barrier. This air gap serves as a heat insulating medium that blocks heat conduction from the fuel receptacle to the outer surface, effectively mediating the thermal transfer and keeping the exterior cool to the touch.
2Reliability
If heat insulation is added to prevent outer surface heating, then safety is improved, but device complexity increases
Solution Approach 1:
The container wall is segmented into inner and outer layers with a hollow space between them, creating an integrated insulation system. This segmentation approach improves fuel safety by preventing heat transfer to the exterior while adding minimal structural complexity compared to adding separate insulation components.
Solution Approach 2:
The structural walls and heat insulation function are merged into a single integrated double-layer structure. The inner-layer wall provides structural containment for the fuel, while the hollow space and outer-layer wall simultaneously provide thermal insulation, combining structural and insulating functions without requiring separate insulation components.
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 double-layer structure effectively insulates heat from the wick, preventing the outer-layer from overheating and maintaining fuel safety by creating an air gap that prevents fuel vaporization, thus addressing the heat conduction issues in prior devices.
Implementation Method 1
an outer-layer wall (22) disposed outside of and spaced from the inner-layer wall (21) such that the inner-layer wall (21) and the outer-layer wall (22) define a hollow space (23) therebetween
Data Source
AI summary
A combustion device having a double-layer structure includes a main body, which is double layered, including an inner-layer wall and an outer-layer wall disposed outside of and spaced from the inner-layer wall such that the inner-layer wall and the outer-layer wall include a hollow disposed therebetween. The inner-layer wall forms a fuel receptacle with an opening. A wick has an end defining fuel-drawing end inserted into the fuel receptacle through the opening.