Rotating Bottom Brazier for Pellet Stove Cleaning
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Solution Overview
Problem
Current self-cleaning braziers for pellet heating apparatuses are ineffective in removing combustion residues from all areas, particularly those that remain stationary, and do not facilitate partially pyrolytic combustion due to ventilation gaps, and clinker formation obstructs air inflow.
Innovation Solution
A self-cleaning brazier design with a rotating bottom and strategically positioned protuberances and recesses that extend along the side surface, creating air passage sections on opposite sides of the axis of rotation, allowing for effective cleaning and air inflow, while minimizing central openings to promote pyrolytic combustion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the bottom is made rotatable to clean combustion residues, then cleaning effectiveness is improved, but ventilation gaps are created that allow excessive oxygen inflow
Solution Approach 1:
The bottom is segmented into multiple sections: a rotatable lower bottom for cleaning combustion residues, and a stationary upper bottom that remains in place. This segmentation allows the lower bottom to rotate for cleaning while the upper bottom maintains the combustion chamber structure and controls ventilation, preventing excessive oxygen inflow.
Solution Approach 2:
Different parts of the bottom have different functions and properties. The lower bottom section is designed to be rotatable with scraping elements for cleaning, while the upper bottom section is stationary and forms part of the combustion chamber. This local differentiation enables simultaneous cleaning action and controlled combustion environment.
2Power
If ventilation gaps are created for air inflow, then combustion is improved, but pyrolytic combustion is compromised
Solution Approach 1:
Air inlet channels are strategically positioned at specific locations on the containment body, away from the central combustion area. This localized air supply provides necessary oxygen for combustion while maintaining limited overall ventilation, creating conditions favorable for pyrolytic combustion in the central region.
Solution Approach 2:
The stationary upper bottom acts as an intermediary structure that separates the air supply function from the combustion chamber. It allows controlled air inflow through specific channels while preventing direct excessive oxygen access to the combustion zone, thereby supporting pyrolytic combustion conditions.
3Quantity of substance
If clinker is allowed to form, then combustion residues are contained, but air passage sections become obstructed
Solution Approach 1:
The lower bottom is designed to rotate, creating dynamic movement that prevents clinker from settling and obstructing air passage sections. This rotational motion continuously clears the passages, maintaining their functionality while still containing combustion residues in the brazier.
Solution Approach 2:
The rotating bottom mechanism performs self-cleaning of the air passage sections during its operation. The movement of the bottom itself scrapes away clinker and combustion residues from the passages, eliminating the need for separate cleaning mechanisms and maintaining air flow functionality.
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
This design enables quick and comprehensive cleaning of combustion residues, enhances pyrolytic combustion by ensuring proper air inflow, and effectively addresses clinker issues in air passage sections, improving overall cleaning efficiency and combustion quality.
Implementation Method 1
bottom rotating with respect to said containment body about an axis of rotation
Implementation Method 2
partially pyrolytic combustion
Implementation Method 3
configuration of combustion of said brazier
Data Source
Figure 1
Figure 2
Figure 3
AI summary
The present invention concerns a brazier or crucible (1) for a pellet heating apparatus, preferably for a pellet stove, allowing to clean a significant portion of the brazier (1) affected by the presence of combustion residues by means of rotation of the relative bottom (3) and simultaneously obtaining at least a certain side air inflow in the brazier (1), consistent with a partially pyrolytic combustion. The brazier (1) according to the present invention is also suitable to channel said flow and orient it properly for this purpose.