Smokeless safe combustion device
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Solution Overview
Problem
Conventional biofuel fireplaces suffer from inefficient heat distribution, leading to hot surfaces that can burn users and uneven heating, as well as potential ceiling damage due to upward heat convection, while also having low heating efficiency and safety concerns from hot glass and air circulation.
Innovation Solution
A smokeless safe combustion device featuring a stove body with a wick and flow guiding device, including shielding members and a thermal insulating device, which directs heat flow to minimize surface temperatures and ensure even heat distribution by using a wick spaced between sides and shielding members to manage heat flow.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If biofuel fireplaces are made larger to produce greater combustion, then heating output is improved, but surface temperature increases causing burn hazards
Solution Approach 1:
A glass shield is introduced as an intermediary component between the combustion chamber and the user. The shield is positioned at a specific distance from the flame, creating a thermal barrier that allows heat to be radiated into the room while preventing direct contact with high-temperature surfaces. This mediator protects users from burn hazards while maintaining effective heating output.
Solution Approach 2:
The heating approach transitions from direct radiant heating near the flame to distributed heating through heat convection and radiation from multiple surfaces. By positioning the glass shield at an optimal distance, heat is distributed across a larger spatial volume, reducing concentrated surface temperatures while maintaining overall heating effectiveness.
2Ease of manufacture
If fireplaces rely on natural convection for heat distribution, then installation simplicity is improved, but heat distribution uniformity deteriorates
Solution Approach 1:
The heating function is segmented into multiple components: the combustion chamber generates heat, the glass shield radiates and convects heat, and the positioned shield creates multiple heat distribution paths. This segmentation allows heat to reach different areas of the room through various mechanisms, improving uniformity while maintaining the simplicity of natural convection without complex mechanical systems.
3Volume of moving object
If viewing glass is positioned close to the flame for compact design, then device compactness is improved, but safety deteriorates due to burn risk
Solution Approach 1:
The glass shield is positioned at a distance that is partially optimal for heat radiation while accepting some increased device volume. This partial optimization approach ensures that the shield is far enough to reduce surface temperature and burn risk, while not being so far as to significantly compromise device compactness. The positioning represents a balanced compromise between safety and compactness.
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 radiates heat, reduces surface temperatures, and ensures even heat distribution, enhancing safety and heating efficiency by preventing hot air from rising and concentrating heat towards the center for uniform room heating.
Implementation Method 1
little heat is transferred to a lower end and lateral sides of the flame via radiation and conduction
Implementation Method 2
little heat is transferred to a lower end and lateral sides of the flame via radiation and conduction
Implementation Method 3
hot air will move up and circulate surrounding air. Thus, a natural convection occurs
Data Source
AI summary
A combustion device includes a stove body and a flow guiding device. The stove body has first and second sides disposed oppositely and includes a wick disposed between the first and second sides. The wick is spaced from the first and second sides at first and second distances respectively. A flow guiding device includes first and second shielding members respectively connected to the first and second sides of the stove body. The wick is spaced from the first and second shielding members at third and fourth distances respectively. The third distance is greater than the first distance and the first shielding member is spaced from the first side. The fourth distance is greater than the second distance and the second shielding member is spaced from the second outer side.