Burner and water heater comprising same
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Solution Overview
Problem
Water heaters face issues with incomplete combustion and excessive carbon monoxide generation due to excessive heat distribution, leading to deteriorated thermal efficiency and potential damage to components.
Innovation Solution
A burner design featuring a plate-shaped distribution plate with varying through-hole densities, where the central portion has a higher penetration density than the outskirt portions, ensuring that flames are contained within the combustion chamber and reducing heat transfer to surrounding components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If the burner generates flames with spread out peripheries, then the combustion reaction can occur, but the inner wall of the combustion chamber is excessively heated causing incomplete combustion and carbon monoxide generation
Solution Approach 1:
The distribution plate has different penetration densities in different regions: the central portion has a first penetration density while the outskirt portions have a second penetration density that is 5-15% lower. This local variation in hole density controls the flame structure, making the peripheral flames shorter and preventing them from reaching the combustion chamber wall, thus eliminating carbon monoxide generation while maintaining central combustion efficiency.
2Reliability
If the flames are contained within the combustion chamber, then complete combustion occurs, but the heat distribution to surrounding components must be controlled
Solution Approach 1:
By creating a non-uniform penetration density distribution across the distribution plate, the flame lengths are locally controlled. Central regions maintain higher penetration for sufficient heat generation, while outskirt regions have reduced penetration to contain flames within the chamber. This ensures complete combustion while directing heat primarily to the water heater components rather than losing it to the surrounding environment.
3Device complexity
If the penetration density is uniform across the distribution plate, then the structure is simple, but the flame peripheries spread out and cause incomplete combustion
Solution Approach 1:
The distribution plate implements a non-uniform penetration density design where the outskirt portions have 5-15% lower penetration density than the central portion. This relatively simple structural modification, achieved by varying hole density in different zones, effectively controls flame spread and ensures complete combustion, demonstrating how a straightforward structural change can significantly improve combustion reliability.
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 improves combustion performance by preventing incomplete combustion and reducing carbon monoxide generation, thereby enhancing the thermal efficiency of the water heater.
Implementation Method 1
a plurality of through-holes are disposed in the distribution plate along the reference direction to be spaced apart from each other... such that a mixture of a fuel and air for the combustion reaction pass therethrough
Implementation Method 2
a mixture of a fuel and air for the combustion reaction pass therethrough, and the distribution plate includes... when the mixture is ejected... flames generated through the combustion reaction
Implementation Method 3
a heat exchanger that heats water by using heat generated through the combustion reaction
Implementation Method 4
a combustion chamber heat insulating pipeline configured such that water flows to an outside of the combustion chamber for heat-insulating the combustion chamber
Data Source
AI summary
According to the present invention, a burner for a water heater located upstream of a combustion chamber on the basis of a reference direction, which is a flow direction of a combustion gas generated by a combustion reaction, comprises a plate-shaped distribution plate for generating a combustion reaction, wherein: when one direction orthogonal to the reference direction is referred to as a longitudinal direction, and a direction perpendicular to the reference direction and the longitudinal direction is referred to as a width direction, a plurality of through-holes formed through the distribution plate along the reference direction so that a mixture of fuel and air for the combustion reaction pass through, are formed to be spaced apart from each other in the longitudinal direction and the width direction.