Differentiated Distributor for Premixed Gas Burners
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Solution Overview
Problem
Premixed gas burners in compact combustion chambers face issues with noise and ignition difficulties due to fluidodynamic effects, particularly in reduced size and pressurized conditions, which existing solutions like converging pipes attempt to address but increase costs and complexity.
Innovation Solution
A differentiated distributor with a tubular body featuring distinct load loss zones, created using through-holes of varying diameters and spacings, or a throttle/deflector element, to manage mixture passage and reduce oscillations and improve ignition without additional components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a converging pipe is used to reduce noise and improve ignition, then noise levels are reduced and ignition is improved, but device complexity and manufacturing cost increase
Solution Approach 1:
The patent integrates the noise-reduction function directly into the distributor body by creating differentiated load loss zones within the existing tubular structure. Through-holes of varying diameters are formed in different sections of the distributor, merging the flow control and noise attenuation functions into a single component, thereby eliminating the need for a separate converging pipe.
Solution Approach 2:
The distributor is designed with spatially varying properties: different sections of the tubular body have different numbers, diameters, and distributions of through-holes. This creates zones with different load loss characteristics along the length of the distributor, allowing the mixture velocity to be modulated locally to reduce noise while maintaining overall functionality.
2Reliability
If a converging pipe is used to create different mixture passage speeds, then oscillations are reduced and ignition is improved, but manufacturing cost increases
Solution Approach 1:
The distributor utilizes a porous-like structure with multiple through-holes of different diameters distributed along the tubular body. This porous arrangement creates the necessary flow differentiation and velocity modulation without requiring a complex converging geometry, simplifying manufacturing while achieving reliable ignition.
Solution Approach 2:
The distributor is segmented into different zones along its length, with each zone containing through-holes of specific diameters and distributions. This segmentation allows different sections to create different mixture passage speeds, stabilizing the flame in the low-speed zone while maintaining overall system simplicity.
3Object-affected harmful factors
If the distributor creates differentiated load loss zones, then noise is reduced and ignition is stabilized, but the device complexity increases
Solution Approach 1:
Instead of using a converging pipe to accelerate the mixture and then managing the flow, this invention inverts the approach by using a diverging tubular distributor with progressively larger through-holes. The mixture is decelerated gradually through zones of increasing hole size, achieving noise reduction and flame stabilization through the opposite flow management strategy.
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 reduces noise and ensures stable, constant ignition across varying operating conditions, enhancing reliability and construction simplicity while avoiding the need for extra components like converging pipes.
Implementation Method 1
meets a first zone (16a) having a first load loss and a second zone (16b) having a second load loss different from the first load loss
Implementation Method 2
the mixture passage speed is reduced and/or oscillations are minimised
Data Source
Figure 1
Figure 2~3
Figure 4~5
AI summary
A differentiated distributor, especially suitable for premixed gas burners (10) equipped with a supply collector (12) and with a combustion head (18) housed in a container body (20) forming the combustion chamber with a flue (22), comprising a tubular body (16) provided with means (28-30) and/or (32) or (34) forming, along said body, at least two zones or sections having different load losses.