Granular Fuel Boiler Brazier Ash Fragmentation Mechanism
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Solution Overview
Problem
Existing granular fuel-fired boilers face issues with ash accumulation and incomplete combustion due to caked ash, which blocks combustion air and causes unwanted smoke, especially with non-cohesive fuels like wood pellets, as existing solutions require complex mechanisms for ash removal and lack effective fragmentation means.
Innovation Solution
A granular fuel-fired boiler brazier with a movable base and fragmentation means, such as spring-biased pivotal arms, counterweight-activated arms, or crushing teeth, that break up ash contents when the base is moved to a discharge position, preventing ash bridging and ensuring complete ash removal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the base is moved to discharge position to remove ash, then ash removal is achieved, but caked ash blocks the discharge path and prevents complete removal
Solution Approach 1:
The fragmentation means breaks up caked ash in advance before the base is moved to the discharge position, preventing ash bridging and ensuring complete ash removal. This preliminary fragmentation action resolves the contradiction by preparing the ash for successful discharge while maintaining combustion air flow paths clear of blockages.
Solution Approach 2:
The fragmentation means is automatically activated by the movement of the base itself to the discharge position. The base movement triggers the fragmentation action without requiring separate control mechanisms, making the system self-serving and resolving the contradiction between ash removal and combustion air flow maintenance.
2Ease of operation
If complex linkage mechanisms are used to remove ash, then ash discharge capability is improved, but device complexity increases
Solution Approach 1:
The fragmentation function is merged with the base movement mechanism. The same motion that moves the base to the discharge position also activates the fragmentation means, combining two functions into one mechanism and reducing overall device complexity while maintaining ease of ash discharge operation.
Solution Approach 2:
The base movement serves multiple functions: it positions the brazier for ash discharge and simultaneously activates the fragmentation means to break up caked ash. This multi-functionality reduces the need for separate mechanisms, lowering device complexity while improving ease of operation.
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 ash caking and ensures complete ash discharge, maintaining combustion efficiency and reducing smoke and incomplete combustion issues, regardless of fuel coherence and composition.
Implementation Method 1
there is provided fragmentation means whereby on moving the base to the discharge position, the movement of the base causes the fragmentation means to move to break up the ash contents of the brazier
Data Source
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AI summary
A granular fuel-fired boiler brazier (20) of the type having a brazier base (21) movable periodically from an operative position retaining fuel and ash F in the brazier to a discharge position, shown partially open to allow ash contents F to fall out of the brazier (20). Fragmentation means (35) operate on moving the base to break up the fuel and ash contents F.