Flameless Steam Boiler Combustion Structure
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Solution Overview
Problem
Conventional steam boilers suffer from incomplete combustion leading to harmful gas emissions and inefficient energy use due to direct flame heating and limited heat contact with water, along with safety hazards from furnace explosions.
Innovation Solution
A steam boiler design featuring a housing with parallel upper and lower chambers, filled with tubes for liquid storage, and a gas structure with a burner that disperses high-temperature flue gas for efficient heat exchange, eliminating the need for a furnace and reducing fire hazards.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If direct flame heating is used to heat water quickly, then heating speed is improved, but combustion completeness deteriorates leading to harmful gas emissions
Solution Approach 1:
The patent introduces flue gas as an intermediary heat transfer medium. Instead of direct flame contact with water, the burner heats flue gas which then flows through heat exchange tubes to transfer heat to water. This indirect heating method ensures complete combustion of the burner fuel while maintaining efficient heat transfer to the water.
2Use of energy by moving object
If direct flame heating is used to provide intense heat, then heating efficiency is improved, but heat contact area with water deteriorates causing heat loss
Solution Approach 1:
The patent extends the heat transfer process from direct surface heating to a three-dimensional flow path. Flue gas flows through extensively arranged heat exchange tubes, maximizing the surface area contact between the hot gas and the water-containing tubes. This dimensional expansion of heat exchange area significantly reduces heat loss while maintaining high heating efficiency.
3Power
If conventional furnace design is used to enable combustion, then combustion capability is improved, but safety hazards from furnace explosion worsen
Solution Approach 1:
The patent extracts the combustion chamber (furnace) from the boiler system, separating the combustion function from the heating function. The burner is positioned externally with its combustion zone isolated from the water tank and flue gas flow path. This extraction eliminates the risk of furnace explosions while maintaining effective combustion capability through the isolated burner design.
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 configuration ensures complete combustion, reduces harmful gas emissions, enhances energy efficiency by maximizing heat exchange, and minimizes safety risks through controlled combustion and single-turn flue gas flow.
Implementation Method 1
Combustion can be provided through the burner to generate heat
Implementation Method 2
heat exchange with the liquid in the tubes can be achieved
Implementation Method 3
The air flow within the housing of the steam boiler can help the high-temperature flue gas come into full contact with the surface of the tubes to complete the heat exchange
Data Source
AI summary
Embodiments provide a combustion structure that can achieve stable combustion by addressing the aforementioned drawbacks in the prior art such as low flame stability, backfire, deflagration, blockage and/or any other drawbacks. The combustion chamber structure in accordance with the disclosure can include: a grate structure including a first set of elongated components, a fire retention structure including a second set of elongated components. The first set of first elongated components can be arranged along an axial direction within the combustion chamber structure. The second set of elongated components can be arranged along the axial direction in a same direction as the first elongated components. The second set of elongated components can be configured to generate a negative pressure zone within the combustion chamber. The first set of elongated components can form apertures that can be aligned with apertures formed by the second set of elongated components.