Flush Valve Flapper Stop Angle for Water-Saving Siphonic Toilets
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Solution Overview
Problem
Toilets are the main source of water consumption in homes, accounting for nearly 30% of indoor use, and there is a need to conserve fresh water used by flush toilets.
Innovation Solution
A flush valve assembly for siphonic flush toilets that includes a flapper cover with a stop component to control the open angle, allowing adjustment of flush water volume by limiting the valve open time.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If the flapper cover is allowed to open fully without restriction, then the flush water volume is maximized, but water consumption increases
Solution Approach 1:
The patent applies parameter changes by introducing a stop component that modifies the open angle parameter of the flapper cover. Instead of allowing the valve to open fully (maximizing water volume), the stop component limits the open angle to a predetermined value, thereby controlling and optimizing water consumption while maintaining sufficient flush performance
Solution Approach 2:
The patent implements dynamics by making the flapper cover rotatably movable rather than simply opening linearly. The flapper cover rotates about a pivot point and is controlled by the stop component to achieve a specific open angle, creating a dynamic control mechanism that balances flush effectiveness with water conservation
2Power
If the flapper cover open time is extended, then the flush power is increased, but water consumption increases
Solution Approach 1:
The patent changes the temporal parameter of the flush cycle by controlling the duration the flapper cover remains open. The stop component ensures the flapper cover opens to a predetermined angle and closes after a controlled period, optimizing the balance between flush power delivery and water consumption
Solution Approach 2:
The patent implements periodic action through the controlled opening and closing cycle of the flapper cover. The stop component creates a defined periodic pattern where the valve opens to a specific angle, allows flush water to flow for an optimized duration, then closes, repeating this cycle efficiently
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
Reduces flush water consumption while maintaining a powerful flush by controlling the flapper cover open angle, thereby optimizing water usage.
Implementation Method 1
allow toilet tank flush water to pass through the valve body to a toilet bowl to perform a flush
Implementation Method 2
A siphon jet releases water into an adjoining trapway, thereby initiating a siphon action. A siphon action draws water and waste out of the bowl and into a trapway
Data Source
AI summary
A flush valve assembly for a siphonic flush toilet, comprising a flush valve body and a flapper cover, wherein the flush valve body is coupled to an overflow tube or is coupled to an overflow tube coupling configured to receive an overflow tube, the flapper cover is configured to rotatably lift off the flush valve inlet at an open angle in a direction towards the overflow tube or the overflow tube coupling, and at least one of the flapper cover top face, the overflow tube, and the overflow tube coupling comprises a stop component configured to determine the flapper cover open angle during a flush cycle.