Burner Assembly with Fixed Spin Vane for Asphalt Production
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Solution Overview
Problem
Conventional burner assemblies for asphalt production are inefficient due to their inability to adapt to different-sized combustion chambers, requiring adjustable spin vanes, which increase costs and labor, and fail to efficiently mix fuels and air, leading to high emissions and energy consumption.
Innovation Solution
A burner assembly with a housing, impeller, pre-mix gas injection nozzles, and a fixed spin vane that can selectively fire on gaseous or liquid fuels without altering components, producing a stable, narrow flame and uniformly mixing air and fuel, reducing emissions and energy consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If adjustable spin vanes are used to accommodate different-sized combustion chambers, then adaptability is improved, but device complexity and manufacturing cost increase
Solution Approach 1:
The patent removes the adjustable spin vane component entirely from the burner assembly. Instead of modifying existing components to adapt to different combustion chambers, the invention uses a fixed vane configuration that works across multiple chamber sizes, extracting the problematic adjustable mechanism from the system.
Solution Approach 2:
The fixed spin vane configuration is designed to provide universal adaptability across different combustion chamber sizes. The burner assembly maintains a single, unchanging vane structure that effectively serves multiple functions across various application scenarios without requiring adjustment mechanisms.
2Adaptability or versatility
If adjustable spin vanes are used to accommodate different-sized combustion chambers, then adaptability is improved, but manufacturing cost and maintenance cost increase
Solution Approach 1:
By eliminating the adjustable spin vane mechanism, the patent removes the complex manufacturing requirements associated with adjustable components. The fixed configuration allows for simpler fabrication, reduced material requirements, and lower assembly costs compared to adjustable alternatives.
3Device complexity
If conventional burner assemblies are used, then structure is simple, but fuel and air mixing efficiency is poor leading to high emissions
Solution Approach 1:
The patent introduces localized flow control features at specific positions within the burner assembly. The spin vanes are positioned and configured to create targeted rotational flow patterns in the fuel-air mixture zone, improving mixing efficiency locally without requiring complex adjustments throughout the entire system.
4Reliability
If adjustable components are used to optimize flame configuration, then flame stability is improved, but ease of operation decreases due to adjustment requirements
Solution Approach 1:
The fixed spin vane configuration is designed to self-optimize flame configuration across different operating conditions. The geometric design of the vanes creates automatic flow patterns that maintain stable combustion without requiring operator intervention for adjustment, allowing the system to serve itself across various combustion chamber sizes.
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 burner assembly achieves efficient combustion with reduced emissions and energy use, eliminating the need for adjustable vanes, lowering production costs, and maintaining stability across various combustion chamber sizes.
Implementation Method 1
an impeller mounted in the housing. The impeller is in fluid communication with the air inlet, in mechanical communication with the motor, and adapted to direct air from the air inlet towards the burner end of the housing
Implementation Method 2
at least one pre-mix gas injection nozzle mounted in the housing. Each of the at least one pre-mix gas injection nozzle has at least one orifice adapted to direct gaseous fuel into the housing
Implementation Method 3
a spin vane comprising at least one spin vane blade. The spin vane is mounted in the burner end of the housing and adapted to direct the flow of air in the burner end
Implementation Method 4
an igniter mounted in the burner end of the housing. The igniter is adapted to ignite the air and fuel mixture in the burner end of the housing to produce a main flame
Data Source
AI summary
A burner assembly including a housing having an air inlet and a burner end, a motor, and an impeller mounted in the housing. The impeller is in fluid communication with the air inlet, in mechanical communication with the motor, and adapted to direct air from the air inlet towards the burner end of the housing. The burner assembly also includes at least one pre-mix gas injection nozzle mounted in the housing. Each of the at least one pre-mix gas injection nozzle has at least one orifice adapted to direct gaseous fuel into the housing. The burner assembly further includes a spin vane comprising at least one spin vane blade. The spin vane is mounted in the burner end of the housing and adapted to direct the flow of air in the burner end. The burner assembly still further includes a flattening screen located in the housing downstream from the impeller and an igniter mounted in the burner end of the housing. The igniter is adapted to ignite the air and fuel mixture in the burner end of the housing to produce a main flame.