Double-Walled Combustion Device Thermal Insulation
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Solution Overview
Problem
Existing combustion devices suffer from heat conduction issues, causing the fuel container to become unsafe to handle due to excessive heat buildup, particularly when used for extended periods.
Innovation Solution
A double-layered combustion device design featuring an inner-layer and outer-layer wall with a hollow space in between, incorporating a metallic wick and a protection device with a slot for heat insulation and stability, preventing the device from tipping over and reducing heat transfer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single-layer fuel container is used, then the device structure is simple, but heat accumulates excessively causing the container to become unsafe to handle
Solution Approach 1:
The fuel container is divided into an inner-layer wall and an outer-layer wall, creating a double-layered structure with a hollow space between them. This segmentation allows the heat generated during combustion to be isolated from the outer surface, preventing excessive heat accumulation while maintaining structural integrity and safety.
2Quantity of substance
If the combustion device is made tall to accommodate fuel and shielding members, then fuel capacity is sufficient, but heat conducts downwards making the device unsafe to hold
Solution Approach 1:
The hollow space between the inner-layer wall and outer-layer wall acts as a thermal insulation intermediary. This air gap prevents direct heat conduction from the combustion chamber to the outer surface and handle area, allowing the device to maintain sufficient fuel capacity while keeping the exterior safe to touch.
3Temperature
If a double-layered structure with hollow space is used, then heat insulation is improved, but device complexity increases
Solution Approach 1:
The outer-layer wall serves multiple functions: it provides structural support, acts as a heat insulation barrier through the hollow space, and forms the external surface safe for handling. This multi-functionality reduces the need for additional separate insulation components, thereby limiting the increase in overall device complexity.
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 effectively prevents heat from accumulating excessively on the outer-layer walls, ensuring the device remains safe to handle and maintains stability, while allowing the wick to function efficiently within the transparent, cylindrical structure.
Implementation Method 1
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
Data Source
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AI summary
A protected combustion device (10) has a main body (20) including an inner-layer wall (21), an outer-layer wall (22) disposed outside of and spaced from the inner-layer wall, and a hollow (23) disposed therebetween. The inner-layer wall forms a fuel receptacle (211). The outer-layer wall has an open end and the open end defines a hole (24). The hole is in communication with the hollow. The open end of the outer-layer wall forms a bottom side. A protection device (30) is coupled to the main body. The protection device includes a through hole (31) extending therethrough and communicating with the hollow. The protection device includes a slot (32) extending along a periphery of the through hole and the bottom side is disposed in the slot.