Gas Boiler Feed Assembly Vibration Elimination
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Solution Overview
Problem
Existing air/gas feed assemblies for gas boilers often experience undesirable vibrations due to the introduction of new modulating and mixing devices, which can lead to perceived low quality and technical issues.
Innovation Solution
A tubular mixing and modulating device with flanges that form openings around the feed path between the mixing and suction conduits, eliminating vibrations by creating gaps that compensate for pressure waves and stabilize the air/gas mixture flow.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If new modulating and mixing devices are introduced to reduce pollutants and improve flow modulation, then the air/gas mixture composition ratio can be varied within a given range, but vibrations occur which are undesirable and annoying
Solution Approach 1:
The patent introduces openings in the mixing device body that act as intermediaries to allow pressure equalization between different regions of the mixing chamber. This mediator structure enables the harmful pressure waves causing vibrations to be dissipated, while preserving the modulating and mixing functions that provide variable air/gas composition ratios.
Solution Approach 2:
The patent converts the harmful pressure waves and vibrations into beneficial pressure equalization through the openings. By allowing controlled pressure communication between chambers, the design transforms the problematic pressure differentials into a stabilizing mechanism that eliminates vibrations while maintaining efficient mixing and modulation capabilities.
2Object-generated harmful factors
If valves are disposed in the venturi conduit to partially close the flow and create air/gas mixtures greater than 5 to 1 ratio, then pollutant reduction is improved, but vibrations are generated
Solution Approach 1:
The openings in the mixing device serve as intermediary pressure equalization paths that allow the system to maintain the high air/gas ratio mixing (greater than 5:1) required for pollutant reduction, while simultaneously providing a relief mechanism that prevents the buildup of pressure waves that cause vibrations.
Solution Approach 2:
The patent modifies the physical parameters of the mixing device by introducing openings that change the pressure distribution characteristics. This parameter change allows the system to operate at high air/gas ratios for pollutant control while altering the pressure wave propagation to eliminate vibrations.
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 eliminates vibrations across all modulation levels and air/gas ratios, ensuring a stable and efficient air/gas mixture delivery without compromising flow modulation or composition.
Implementation Method 1
the introduction of these new modulating and mixing devices occasionally causes vibrations... the first and second flange (10, 9) being joined to form a number of openings (20) extending about the feed path (P) between the first and second flange (10, 9)... Thanks to the present invention the feed assembly for feeding an air/gas mixture is free from vibrations
Data Source
Figure 1
Figure 2~4
AI summary
A feed assembly (1) of an air/gas mixture to a burner (5) of a gas boiler defines a feed path (P) of the air/gas mixture and has a mixing and modulating device (5) of the air/gas mixture defining a mixing region, and a suction conduit (8) connected to the mixing and modulating device (5); and a plurality of openings (20) communicating with the outside, and located downstream of the mixing area and near the junction between the mixing and modulating device (5) and the suction conduit (8).