Fluid Conduit Damper With Sealed Vent For Brazing
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Solution Overview
Problem
Conventional fluid conduit assemblies face issues with pressure waves caused by devices within the system, leading to inaccurate fuel metering and noise, and require additional processing steps due to the inability of conventional dampers to withstand brazing temperatures, resulting in increased costs.
Innovation Solution
A fluid conduit assembly with a damper that includes a sealed vent to vent gases during the brazing process, allowing it to be inserted before brazing and sealed during the process, eliminating the need for a secondary sealing operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a conventional hollow-bodied damper is sealed and inserted into the fluid conduit before furnace brazing, then the damper can be permanently attached during the brazing process, but the damper may rupture due to thermal expansion of gases captured within the damper body during brazing
Solution Approach 1:
The damper is inserted into the fluid conduit before the brazing process begins, allowing it to be in position during brazing. The vent channel is opened during brazing to release expanding gases, preventing rupture while maintaining the damper's permanent attachment.
Solution Approach 2:
A vent channel is introduced as an intermediary feature that allows trapped gases to escape during the brazing process. This vent channel prevents pressure buildup that would otherwise cause the damper to rupture, while still allowing the damper to be permanently attached during brazing.
2Reliability
If the damper is inserted into the fluid conduit after the furnace brazing process, then the damper will not rupture from thermal expansion, but an additional sealing operation such as laser welding or induction brazing is required
Solution Approach 1:
The damper installation and sealing operations are merged into the single furnace brazing process. The vent channel enables the damper to withstand brazing temperatures, allowing both the damper attachment and the sealing of the fluid conduit to occur simultaneously during one brazing cycle, eliminating the need for separate sealing operations.
3Adaptability or versatility
If various devices are part of the fluid distribution system, then the system can perform its distribution function, but pressure waves in the form of pulses propagate through the system causing inaccurate fuel metering and noise
Solution Approach 1:
The vent channel, which initially seems to be a simple opening, actually serves to convert the harmful effect of trapped expanding gases into a beneficial function by allowing controlled gas release. This prevents pressure wave formation that would otherwise cause inaccurate fuel metering and noise, while maintaining system functionality.
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 pressure waves and noise, ensuring the damper's integrity during brazing, thereby simplifying the assembly process and reducing costs by integrating the sealing process into the brazing step.
Implementation Method 1
gases within the cavity of the hollow-bodied damper expand, thereby causing distortion to the damper body
Data Source
AI summary
The present invention is directed to a fluid conduit assembly. In accordance with one embodiment of the present invention, the inventive fluid conduit assembly includes a fluid conduit having an inlet, at least one outlet and a fluid flow passageway therebetween configured to allow for fluid to be communicated between said inlet and said at least one outlet. The inventive fluid conduit assembly further includes at least one damper disposed within the passageway of the fluid conduit. The damper includes a sealed vent configured to vent gases captured by the damper during a brazing process performed on the fluid conduit when unsealed.