Oven with centralised flame guidance
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Solution Overview
Problem
Existing fireplaces struggle with uneven combustion of solid fuels, especially during partial load operation, leading to reduced combustion efficiency and increased environmentally harmful emissions, as well as a less visually appealing flame due to incomplete combustion.
Innovation Solution
A shell-like insert with a centrally positioned through opening for flame centering, combined with fireproof ceramic glass and reflective inner surfaces to enhance combustion air mixing and heat retention, ensuring uniform combustion and improved flame visibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If the stove is operated at partial load to achieve low heating outputs, then the heating requirement is met, but combustion becomes uneven and incomplete leading to reduced combustion efficiency and increased emissions
Solution Approach 1:
The patent extracts the flame from the conventional combustion zone and guides it through a separate channel to a burner bowl positioned at the bottom of the combustion chamber. This separation allows the main combustion to occur independently while the extracted flame provides controlled afterburning of flue gases, ensuring complete combustion even at partial load operation.
Solution Approach 2:
The patent introduces a burner bowl as an intermediary device that receives flue gases through a channel and provides a controlled environment for afterburning. This intermediary structure ensures that combustible flue gases are properly mixed with combustion air and burned completely, resolving the combustion efficiency problem at partial load.
2Quantity of substance
If the flame is allowed to spread freely in the combustion chamber, then combustion can occur, but the flame is uneven and erratic leading to incomplete combustion and harmful emissions
Solution Approach 1:
The patent extracts the flame from uncontrolled spread and channels it through a defined path to the burner bowl. This extraction and redirection of the flame ensures that combustible flue gases are concentrated and burned completely in a controlled zone, preventing harmful emissions.
Solution Approach 2:
The patent provides abundant combustion air to the burner bowl where flue gases are mixed with primary combustion air and burned. This accelerated oxidation ensures complete combustion of combustible gases, eliminating harmful emissions while maintaining efficient combustion.
3Device complexity
If the combustion chamber is designed for conventional combustion, then the structure is simple, but the flame visibility and visual appeal are reduced due to incomplete combustion
Solution Approach 1:
The patent extracts the flame through a channel to the burner bowl, creating a concentrated, well-defined flame path that is visible through the glass front. This extracted flame configuration provides excellent visual appeal while the complete combustion process ensures bright, clean flames.
Solution Approach 2:
The patent ensures complete combustion by providing sufficient combustion air to the burner bowl, resulting in bright, clean flames with high illumination intensity. The complete combustion of hydrocarbon gases produces luminous flames that are visually appealing while maintaining low emissions.
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 achieves more uniform and efficient combustion, reducing emissions and enhancing the visual appeal of the flame by ensuring sufficient combustion air and heat retention, resulting in increased luminosity and combustion efficiency.
Implementation Method 1
at least partially blocking the heat radiation that causes heat loss in this area
Implementation Method 2
an inner wall region of the bowl-shaped insert is at least partially reflective
Implementation Method 3
causes the flue gases to flow through the defined opening, forcibly mixing the combustible flue gases with combustion air
Data Source
Figure 1a~1b
Figure 2a~2b
Figure 3a~3b
AI summary
The stove has a fire chamber designed for burning solid fuels. A shell-shaped insert is arranged in the fire chamber with a passage opening (2) designed to pass the flame in a base area. The passage opening faces the base or a side of the fire chamber. The passage opening is formed centrally symmetrical, and the shell-shaped insert is partially made of fireproof ceramic glass and has walls made up of a metal.