Flow Control Valve Damping Chamber Design
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing flow control valves are complex and prone to faults, especially in the small signal range, due to their intricate construction.
Innovation Solution
A simplified valve design featuring a damping chamber directly mounted between the valve piston and housing, with an adjustable restriction opening formed by an annular gap or bore in the end plate, allowing for flexible adaptation to fluid system characteristics and reduced manufacturing costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a complex prior art design with multiple separate components (damping-guide element, metering-guide component, control piston, biasing spring) is used, then damping function is achieved, but device complexity increases and reliability decreases
Solution Approach 1:
The patent combines the damping chamber, metering function, and control piston into a single integrated valve body structure. The damping chamber is formed directly within the valve housing by a recess, eliminating the need for separate damping-guide elements and external springs. This integration reduces the number of components from multiple separate parts to a unified structure, directly addressing the contradiction by simplifying construction while maintaining damping functionality.
Solution Approach 2:
The patent extracts the external spring components (biasing spring and control spring) and replaces them with a streamlined internal spring mechanism housed within the integrated valve body. The spring is contained within the valve housing and acts directly on the piston without requiring separate guide components, thereby reducing complexity while preserving the necessary damping and control functions.
2Adaptability or versatility
If a fixed damping chamber design is used, then manufacturing is simplified, but adaptability to different fluid system requirements is reduced
Solution Approach 1:
The patent implements an adjustable damping mechanism where the restriction opening size can be modified to change the damping effect. The end plate with its adjustable opening allows the damping characteristic to be adapted to different fluid system requirements. This dynamic adjustability is achieved through a simple structural modification (adjustable opening in end plate) rather than complex mechanisms, balancing manufacturability with adaptability.
Solution Approach 2:
The patent enables adaptation of the damping effect by changing the geometric parameter of the restriction opening (its size and shape). By modifying this single parameter in the end plate, the damping characteristic can be tuned for different applications without redesigning the entire valve structure. This approach maintains ease of manufacture while providing the needed versatility.
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 simplified design reduces fault liability, enhances flexibility, and improves response behavior by allowing easy adaptation of the damping effect to specific fluid system requirements, resulting in a more reliable and cost-effective valve.
Implementation Method 1
a damping chamber (18) configured between the valve piston (16) and the valve housing (1), with interaction between these two components, i.e. the damping chamber is configured between the valve piston and the valve housing (cartridge)
Implementation Method 2
Inserted in the hollow control piston is a control spring, which forces the end face of the control piston against the damping-guide element
Data Source
AI summary
A valve, preferably of the flow control construction type, has a valve piston or pressure regulator piston mounted in an axially displaceable manner in a valve housing. The valve piston and the valve housing form a damping chamber for the motional damping of the valve piston.