Dual Threshold Check Valve for Bidirectional Flow Control
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Solution Overview
Problem
Traditional check valves only operate effectively at a single threshold volumetric flow rate, failing to manage fluid flow efficiently across different flow rates in both directions, which is undesirable for applications requiring dual threshold control.
Innovation Solution
A dual threshold check valve design featuring a first sealing element to restrict flow in one direction when the upstream flow rate is below a first threshold and a second sealing element, biased to allow unrestricted flow in the opposite direction when the upstream flow rate is below a second threshold, utilizing a spring and a stainless steel ball to achieve robust sealing and flow control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a traditional single-threshold check valve is used, then the valve structure is simple, but it cannot manage fluid flow efficiently across different flow rates in both directions
Solution Approach 1:
The valve is segmented into two independent sealing elements (first sealing element and second sealing element), each responsible for controlling flow in one direction with its own threshold. This segmentation allows the valve to handle different flow rates in both directions independently, improving adaptability while keeping each sealing element's structure relatively simple
Solution Approach 2:
The valve body and passage are designed to accommodate multiple sealing elements with different functions - the first sealing element restricts forward flow below a first threshold, while the second sealing element restricts reverse flow below a second threshold. This multi-functionality allows a single valve to perform dual threshold control without requiring separate valves for each direction
2Adaptability or versatility
If a first sealing element is added to restrict flow in one direction, then flow control in the first direction is improved, but the valve structure becomes more complex
Solution Approach 1:
Multiple sealing elements are merged within a single valve body and passage, allowing them to operate cooperatively. The first and second sealing elements share the same valve housing and fluid passage, reducing the need for separate valve assemblies and minimizing overall structural complexity while achieving bidirectional flow control
3Productivity
If dual threshold control is implemented, then flow management efficiency is improved, but the manufacturing complexity increases
Solution Approach 1:
Each sealing element is designed with specific local properties optimized for its direction of operation. The first sealing element has characteristics suited for forward flow restriction, while the second sealing element has characteristics optimized for reverse flow restriction. This local quality optimization allows efficient flow management in each direction while using standardized manufacturing processes for each component type
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
Enables efficient fluid flow management by allowing baseline unrestricted flow in one direction while restricting flow to a predetermined rate in the other direction, maintaining robust sealing and eliminating the need for additional spring biasing, thus addressing the limitations of single-threshold valves.
Implementation Method 1
A second sealing element is biased to unrestrict flow of the fluid to a baseline unrestricted flow rate in a second direction through the passage when an upstream volumetric flow rate of the fluid in the second direction is less than a second predetermined threshold
Data Source
AI summary
In one aspect of the present invention, it is contemplated that a valve includes a passage. A first sealing element is biased to restrict flow of a fluid in a first direction through the passage when an upstream volumetric flow rate of the fluid in the first direction is less than a first predetermined threshold. A second sealing element is biased to unrestrict flow of the fluid to a baseline unrestricted flow rate in a second direction through the passage when an upstream volumetric flow rate of the fluid in the second direction is less than a second predetermined threshold.