Faucet Valve Detent Mechanism for Selectable Water Flow
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Solution Overview
Problem
Despite existing regulations aimed at improving water efficiency in plumbing fixtures, there is still a significant amount of water that can be saved, particularly in scenarios where a lower flow rate is not needed, necessitating a faucet valve that allows users to easily reduce water consumption without compromising functionality or increasing costs.
Innovation Solution
A motion interrupting water saving faucet valve with a feedback point that impedes the full opening of the valve, allowing users to switch between high and low flow rates by feeling a 'feedback point' when turning the handle, which can be easily overridden for full flow if needed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a feedback point is added to the valve to enable easy switching between high and low flow rates, then water consumption can be reduced and ease of operation is improved, but the device complexity increases due to the additional detent mechanism
Solution Approach 1:
A detent mechanism acts as an intermediary element between the user's manual operation and the valve's flow control. The detent mechanism includes a detent ball that engages with detent ramps on the actuator element, providing tactile feedback and automatic positioning at the intermediate flow rate without requiring complex electronic controls or multiple valves.
Solution Approach 2:
The detent mechanism provides mechanical feedback to the user through a tactile 'click' or 'stop' sensation when the actuator element reaches the intermediate position. This feedback confirms to the user that the flow rate has been successfully reduced, eliminating the need for visual indicators or complex control systems.
2Loss of substance
If a detent mechanism is installed to create a feedback point, then water consumption is reduced, but the manufacturing cost and manufacturing precision requirements increase
Solution Approach 1:
The detent mechanism is constructed from simple, inexpensive components including a detent ball, detent ramps, and spring elements that can be manufactured using standard machining processes. These components are designed to be durable but are replaceable if needed, and their simple geometry allows for cost-effective production through conventional manufacturing methods.
Solution Approach 2:
The flow rate is controlled by changing the physical position of the actuator element along its travel path. The detent mechanism creates discrete positional states (fully open, intermediate, fully closed) that correspond to different flow rates. This positional parameter change is achieved through simple mechanical engagement rather than complex flow restriction components.
3Loss of substance
If the feedback point impedes full valve opening, then flow rate is reduced for water saving, but the valve operation speed decreases due to the additional mechanical engagement
Solution Approach 1:
The detent mechanism provides partial mechanical engagement at the intermediate position rather than requiring full engagement throughout the entire valve travel. The detent ball engages with the detent ramps only at specific points in the actuator's travel path, allowing for quick engagement and disengagement that minimizes operation time while still achieving flow rate reduction.
Data Source
AI summary
A motion interrupting water saving faucet valve helps users improve their water efficiency. This is achieved through the use of a soft stop that limits the flow rate of water through a faucet by interrupting the motion of the valve that controls the fluid flow. As a result, there will be multiple different flow rates a user can achieve depending on the needs of a given application. A lower flow rate is the result of the soft stop being engaged through the use of a detent mechanism. The higher rate is the maximum flow rate of a faucet and is easily achieved by a user overriding the soft stop. These different flow rates allow a user to reduce their water consumption because they can now choose between using half or full flow through any given faucet.