Flamer Fuel Pressure Control via Vapor-Liquid Switching
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Solution Overview
Problem
Existing flamers, both stationary and mobile, lack a fuel pressure control system, leading to fluctuations in fuel tank pressure during heavy usage, which affects the quality of flaming operations such as poultry litter sterilization and weed eradication.
Innovation Solution
A fuel supply pressure control system that utilizes a pressure switch to manage the use of vapor and liquid fuel fractions, ensuring consistent tank pressure by switching between vapor and liquid fuel based on set pressure points, with solenoid valves controlling the fuel flow to maintain equilibrium.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If vapor fuel is drawn from the tank during heavy usage, then fuel flow rate increases, but tank pressure fluctuates due to finite boiling time
Solution Approach 1:
The system changes the physical state parameter of the fuel by switching between vapor and liquid phases. When tank pressure drops below the set point during heavy vapor consumption, the pressure switch activates the liquid fuel valve, drawing liquid fuel instead of vapor. This parameter change in fuel state allows the system to maintain stable tank pressure while still meeting high fuel flow demands, as liquid fuel withdrawal does not require boiling and thus does not disrupt the vapor-liquid equilibrium in the tank.
Solution Approach 2:
The pressure switch provides continuous feedback on tank pressure conditions. It monitors the tank pressure and automatically switches between vapor and liquid fuel valves based on whether the pressure is above or below the predetermined set point. This feedback mechanism ensures that liquid fuel is drawn only when necessary to maintain pressure stability, creating a self-regulating system that responds dynamically to changing fuel consumption conditions.
2Stability of the object's composition
If liquid fuel is drawn from the tank, then tank pressure remains stable, but the system requires additional control mechanisms
Solution Approach 1:
The pressure switch serves as an automatic self-service control mechanism that eliminates the need for external monitoring or manual intervention. It autonomously detects tank pressure conditions and actuates the appropriate fuel valve (vapor or liquid) based on the set point comparison. This self-service approach maintains simple overall system design while achieving stable pressure control, as the switch inherently responds to pressure changes without requiring additional sensors, controllers, or human operation.
3Reliability
If vapor fuel is used for flaming operations, then consistent flame quality is achieved, but fuel consumption increases during heavy usage
Solution Approach 1:
The system dynamically changes the fuel delivery parameter by switching between vapor and liquid fuel sources based on consumption rate requirements. During heavy usage, when vapor consumption would deplete tank pressure and potentially compromise flame quality, the system transitions to liquid fuel delivery. The liquid fuel is then vaporized in the burner assembly, ensuring consistent flame quality is maintained regardless of whether the source was tank vapor or injected liquid, while allowing higher overall fuel consumption rates.
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 system maintains consistent fuel tank pressure, ensuring stable fuel flow and improved flaming quality by switching between vapor and liquid fuel, reducing the volume of vapor needed to maintain pressure and enhancing the versatility of flamers for various applications.
Implementation Method 1
A fuel supply pressure control system that utilizes a pressure switch to manage the use of vapor and liquid fuel fractions
Implementation Method 2
with solenoid valves controlling the fuel flow to maintain equilibrium
Implementation Method 3
ensuring consistent tank pressure by switching between vapor and liquid fuel based on set pressure points
Data Source
AI summary
A flamer may be used to sterilize poultry litter, soil, concrete, etc. The stationary or mobile flamer disclosed comprises a hood to contain the heat, an external frame, and burners. A fuel tank may be carried on the flamer or on a tractor. An additional embodiment provides for mounting the flamer on wheels, permitting the unit to be towed by a truck, four-wheeler, tractor, etc. The burners are adjustable as to angle, and fueling rate. A pressure in the fuel system is controlled by selectively switching between the liquid and vaporous components of the fuel. By limiting how low the pressure may fall, the flow of fuel from the tank to the torches is more consistent.