Double-Chamber Flushing Valve for Toilet Bowls
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Solution Overview
Problem
Existing faucet designs for rinsing toilet bowls face issues such as decreasing water flow rate when the opening trigger is stopped, bulkiness, and potential blockage in the open position, requiring high pressure force and not allowing opening only by releasing the control device.
Innovation Solution
A flush valve with a double-chamber temporization jacket, where the upper chamber controls the auxiliary valve and the lower chamber controls the main damper, maintaining the main valve open for a predetermined time after the flushing button is released, allowing a maximum flow until the auxiliary valve is sealed, and a control system with dual buttons for short and long rinsing options.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single-chamber temporization mechanism is used, then the device structure is simpler, but the water flow rate decreases when the opening trigger is stopped
Solution Approach 1:
The temporization mechanism is divided into two independent chambers: an upper chamber that controls the auxiliary valve and a lower chamber that controls the main damper. This segmentation allows each chamber to independently manage different aspects of the flushing process, maintaining high water flow rate while preventing the degradation issues seen in single-chamber designs.
2Reliability
If high pressure force is required to trigger opening, then the valve can be securely closed, but it requires excessive force to operate and may be blocked in open position
Solution Approach 1:
The auxiliary valve acts as an intermediary mechanism that uses low-pressure force from the upper temporization chamber to trigger the main valve opening. This intermediary system allows the main damper to remain securely closed during normal conditions while enabling easy activation through a simple button press that releases pre-stored energy in the temporization chambers.
Solution Approach 2:
The temporization chambers pre-store energy and maintain pressure differentials in advance, so that when triggered, the valve opens immediately with minimal user force. The system is prepared beforehand with the upper chamber controlling the auxiliary valve and the lower chamber controlling the main damper, eliminating the need for high continuous activation force.
3Ease of operation
If the valve opens easily with low pressure force, then it is easy to operate, but it may open unintentionally or be blocked in open position
Solution Approach 1:
The auxiliary valve controlled by the upper temporization chamber serves as an intermediary that must be activated first before the main valve can open. This two-stage control system ensures that easy operation (via button press) does not lead to unintentional opening, as the pre-stored pressure differential in the temporization chambers must be released through the controlled sequence: upper chamber activates auxiliary valve, which then allows lower chamber to open main damper.
4Productivity
If a dual-chamber temporization system is used, then the water flow rate is maintained at maximum for predetermined time, but the device becomes more complex
Solution Approach 1:
The upper temporization chamber is embedded within the head body housing, and the lower temporization chamber is nested between the head body and the valve body. This nested arrangement allows both chambers to coexist in a compact configuration, maintaining maximum water flow rate for a predetermined time without excessive increase in overall device complexity or size.
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 enables a consistent high water flow without requiring high pressure force, prevents blockage, and allows the faucet to remain open until the auxiliary valve is sealed, ensuring efficient rinsing with adjustable flow rates.
Implementation Method 1
automatic closing by hydraulic time delay which make it possible to trigger, at the user's choice, a large or a small volume of rinsing water
Implementation Method 2
Keeping the auxiliary valve open allows a pressure differential between the upper temporization chamber and the lower temporization chamber, allowing the maintenance in the open position of the main valve
Data Source
Figure 1
Figure 2
Figure 3~4
AI summary
The invention relates to a toilet bowl flushing tap allowing a user to trigger a small or large volume of water in which a timing sleeve (4) has an upper timing chamber (6) in which an auxiliary valve (19,20) is housed and a lower timing chamber (5) in which a main valve (17) is housed.