Compact Silencer With Inclined Baffles For Condensing Boilers
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Solution Overview
Problem
Condensation boilers face challenges in achieving high thermal power for hot water production while maintaining low thermal power for heating, leading to sound issues due to fluctuations in the fuel/air mixture, which existing silencers cannot effectively address without increasing boiler dimensions.
Innovation Solution
A compact silencer design featuring a box body with inclined baffles and parallel conduits that provide a lengthy air path for sound damping, reducing pressure drops and resonance, allowing for integration into small boilers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a silencer is added to reduce noise from low frequency vibration and high frequency hissing, then noise reduction is improved, but the boiler dimensions increase and become bulky
Solution Approach 1:
The silencer is segmented into multiple parallel conduits (first conduit, second conduit, third conduit) within a compact box body. This segmentation allows the air flow to be divided into multiple paths, achieving effective noise reduction through resonance damping and pressure equalization while maintaining a small overall volume. The segmented structure enables the silencer to fit within the constrained dimensions of modern compact boilers.
Solution Approach 2:
The silencer utilizes three-dimensional spatial arrangement of parallel conduits and inclined baffles within a compact box body. By optimizing the vertical and horizontal arrangement of conduits and using inclined baffles at specific angles, the design achieves effective noise reduction in a compact footprint, transforming the noise control function into a multi-dimensional space-efficient configuration.
2Power
If the boiler power density is increased to provide high thermal power for hot water production, then hot water production capability is improved, but sound problems from low frequency vibration and high frequency hissing worsen
Solution Approach 1:
The silencer acts as an intermediary component between the burner and the combustion air intake system. It mediates the harmful sound effects by damping resonance and equalizing pressure fluctuations in the fuel/air mixture, allowing the boiler to operate at high power densities for hot water production without generating excessive low frequency vibration or high frequency hissing.
Solution Approach 2:
The silencer changes the acoustic parameters of the combustion air flow by providing multiple parallel conduits with inclined baffles. This configuration modifies the pressure and flow characteristics of the air/fuel mixture, reducing the amplitude of pressure fluctuations and suppressing the generation of harmful sounds while maintaining the required thermal power output.
3Volume of moving object
If a compact silencer design is used to maintain small boiler dimensions, then boiler size is reduced, but the complexity of the silencer construction increases
Solution Approach 1:
The silencer merges multiple functions into a single integrated component: noise reduction through resonance damping, pressure equalization, and flow guidance are all achieved within one box body containing parallel conduits and inclined baffles. This merging of functions reduces the overall number of separate components needed, simplifying the construction and assembly process while maintaining compact dimensions.
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 silencer effectively reduces noise and pressure drops within small boiler dimensions, enabling efficient operation and easy mounting, while maintaining high thermal power flexibility.
Implementation Method 1
Any resonance, hissing, etc. is damped within the silencer
Implementation Method 2
the baffle 24 also performs the function of guiding the air flows within the body 12 (intake and delivery to the fan), so reducing pressure drops
Data Source
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AI summary
For a wall-mounted gas-fired condensation boiler (1), a silencer (9) for introducing air into a mixer member (6) which receives the gas and is connected to a fan (5) which feeds this gas and said air to a conduit (4) connected to a burner (3), said silencer (9) presenting a body (12) having a first aperture (21) for drawing air from the external environment and a second aperture (50) to which the mixer member (6) is connected for its air intake; at least two parallel conduits (31, 40, 44) are provided within said body (12) and are separated by a dividing wall or baffle (24) provided with at least one internal aperture (36) to enable communication between said conduits (31, 40, 44), said baffle (24) creating two parallel combustion air flows and guiding these to the mixer member (6).