Shower Valve Damper Assembly for Water Hammer Noise Reduction
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Solution Overview
Problem
Existing solutions for reducing water hammer noise and vibration in plumbing systems, such as water hammer arrestors, are too large and over-engineered for low flow rate systems like residential shower systems, and often require cumbersome installation and maintenance access.
Innovation Solution
A compact valve damper assembly integrated into a fluid control valve with a piston and compressible gas chamber, where the piston translates to absorb pressure changes, and an adjustable vent allows for customization of the gas volume to manage piston position and absorb pressure spikes, reducing noise and vibration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If add-on water hammer arrestors are used to reduce noise and vibration, then noise reduction is improved, but device size becomes too large and installation complexity increases
Solution Approach 1:
The patent combines the water hammer arrestor functionality directly into the shower valve body by integrating a piston, compressible gas chamber, and reservoir within the existing valve structure. This eliminates the need for separate add-on arrestors, reducing overall device size while maintaining noise reduction effectiveness through the compressed air cushion mechanism.
Solution Approach 2:
The invention nests the water hammer arrestor components (piston, gas chamber, reservoir) within the existing valve body cavity. The arrestor mechanism is contained inside the valve assembly rather than being a separate external component, achieving compact integration without compromising the noise absorption function.
2Object-affected harmful factors
If add-on water hammer arrestors are used to reduce noise and vibration, then noise reduction is improved, but ease of operation deteriorates due to access panel requirements
Solution Approach 1:
By merging the water hammer arrestor functionality into the shower valve body itself, the invention eliminates the need for separate access panels or external housing. The valve body serves dual purposes as both the flow control mechanism and the arrestor containment, allowing maintenance through standard valve access points.
3Reliability
If traditional water hammer arrestors are used in low flow rate systems, then severe water hammer protection is improved, but device complexity becomes over-engineered
Solution Approach 1:
The patent applies local quality by designing a simplified arrestor mechanism specifically tailored for low flow rate shower systems. Instead of using the complex, high-capacity arrestors designed for commercial high-flow applications, the invention uses a proportionally scaled piston and compressible gas chamber that provides appropriate protection for residential shower flow rates, reducing unnecessary complexity.
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 noise and vibration in low flow rate systems by absorbing pressure changes within the valve body, providing a compact and easily maintainable design tailored for residential shower systems.
Implementation Method 1
The piston is configured to slidably translate within the valve body to compress the compressible gas in response to a water pressure change in the shower system
Implementation Method 2
there is a free-floating piston which moves axially in water- and gas-tight manner, dividing a cylinder space into two chambers
Data Source
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AI summary
A fluid control valve for a shower system includes a valve body and a piston. The valve body includes a chamber and a reservoir. The piston is slidably coupled to the valve body and fluidly separates the chamber from the reservoir. The chamber includes a compressible gas. The piston is configured to slidably translate within the valve body to compress the compressible gas in response to a water pressure change in the shower system.