Water Discharge Valve Stabilizing Flush Tank Water Level
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Solution Overview
Problem
Conventional water discharge valve devices for flush water tanks suffer from premature closure due to water pressure, leading to unstable dead water levels and inefficient toilet bowl flushing, requiring larger float mechanisms to mitigate this issue.
Innovation Solution
The water discharge valve device features a casing module with an opening positioned at or below the communication port's upper end, reducing the flow force that pushes the valve element downward, and includes a control casing with a small hole for controlled water drainage, ensuring stable water level management and preventing premature closure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the opening of the casing is positioned above the lifted position of the valve element, then full flushing mode can be achieved with high water flow, but the valve element is pushed downward by water pressure causing premature closure and unstable dead water level
Solution Approach 1:
The communication port serves as an intermediary structure that provides a controlled water passage between the casing interior and the discharge port. By positioning the opening at or below the communication port's upper end, the patent creates a mediated water flow path that reduces direct water pressure impact on the valve element while maintaining adequate flushing flow rate through the controlled communication port structure.
2Reliability
If the float is enlarged to increase buoyancy and prevent premature valve closure, then valve stability improves, but the overall device size increases
Solution Approach 1:
The patent extracts the water pressure impact from the direct action on the valve element by repositioning the opening relative to the communication port. This separation removes the harmful water pressure force that was directly pushing the valve element downward, allowing the use of a smaller float while maintaining valve closure stability through the modified water flow path geometry.
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
This configuration stabilizes the dead water level in the flush water tank, preventing premature valve closure and enhancing the reliability and efficiency of toilet bowl flushing operations.
Implementation Method 1
a communication port formed in a peripheral plane extending from the control casing of the water discharge valve to the discharge port, to provide fluid communication between the casing module and the discharge port
Implementation Method 2
the opening of the casing module is provided at a height position equal to or lower than that of an upper end of the communication port... flush water flowing from the inside of the flush water tank into the casing via the opening of the casing will powerfully hit against the valve element
Data Source
AI summary
A water discharge valve device includes: a water discharge valve unit which has a valve element for opening and closing a discharge port and a control casing for controlling an up-down movement of the valve element; a casing module which includes a peripheral wall extending upwardly from a bottom wall of a water storage tank while surrounding peripheries of the discharge port and the control casing of the water discharge valve unit, to define an upwardly open space therebetween, an opening formed to penetrate through the peripheral wall, and a switching valve attached to the peripheral wall and adapted to open and close the opening; and a communication port formed in a peripheral plane extending from the control casing of the water discharge valve unit to the discharge port, to provide fluid communication between the casing module and the discharge port.