Dual Delay Timer Valve for Adjustable Fluid Volume
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Solution Overview
Problem
Existing valves for fluid delivery, such as those for water closets, do not allow for simple and economical variation of water volume according to user convenience and cannot deliver two different fluid volumes at distinct times.
Innovation Solution
A flexible trigger valve with a double time delay mechanism, featuring a push button with two active parts, a delay chamber with a sliding piston, and a dual system of decompression valves, including a guide rod with auxiliary seats and channels, allowing for adjustable fluid volume delivery through varying the position of the piston and decompression channels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a simple valve mechanism is used, then the device complexity is low, but the adaptability to deliver different fluid volumes is insufficient
Solution Approach 1:
The push button is segmented into two distinct active parts: a first active part for short delay operation and a second active part for long delay operation. This segmentation allows a single button structure to provide multiple fluid delivery volume options without requiring separate valves for each mode, thus improving adaptability while maintaining relatively simple device complexity.
Solution Approach 2:
The single push button structure is designed to perform multiple functions: it can deliver short delay fluid volume, long delay fluid volume, and potentially combined volumes by activating different parts of the button. This multi-functionality allows one component to replace what would traditionally require multiple separate valve mechanisms, resolving the contradiction between versatility and complexity.
2Adaptability or versatility
If a dual timing system is added to deliver different fluid volumes, then the adaptability improves, but the device complexity increases
Solution Approach 1:
The first and second delay channels are merged into a single integrated delay mechanism structure. The timing piston moves within a unified delay chamber that contains both delay channels, allowing the system to provide short and long delay timing options through a single coordinated mechanism rather than two separate timing systems, thus improving adaptability while controlling complexity.
Solution Approach 2:
The timing piston is designed to dynamically position itself within the delay chamber, blocking either the first delay channel or the second delay channel based on the push button activation. This dynamic positioning allows the mechanism to adapt its timing characteristics in real-time without requiring complex mechanical linkages or multiple fixed timing mechanisms.
3Duration of action of moving object
If the timing piston blocks decompression channels to extend timing period, then the fluid delivery time increases, but the mechanism complexity increases
Solution Approach 1:
The timing piston automatically blocks the first decompression channel when it reaches the end of its stroke, and the second decompression channel blocks itself when the piston returns. This self-service mechanism extends the fluid delivery time without requiring external control systems or complex timing circuits, achieving extended duration with minimal added complexity.
Solution Approach 2:
The decompression channels are designed to operate in periodic cycles: the first channel decompresses during the initial phase, then blocks to extend timing, followed by the second channel taking over. This periodic action creates extended fluid delivery timing through a rhythmic sequence of channel blocking and decompression events, achieving long duration without proportionally increasing mechanism 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
Enables the user to adjust the volume of fluid supplied by changing the timing of fluid flow, providing two distinct delivery modes through a simple and accessible mechanism, enhancing user convenience and control.
Implementation Method 1
the timing piston 13 blocking the first decompression channel 6c at the end of its ascent allows the timing period to be extended
Implementation Method 2
this piston 13 having in known manner at its periphery a lip seal 15 ensuring its tightness in contact with the time delay liner 11
Implementation Method 3
a third return spring 17 between the timing piston 13 and the bottom 6a of the rod guide 6 to ensure the piston closing stroke towards the seat 1c
Implementation Method 4
two primary and secondary decompression channels which are provided in the lower part of the rod guide upstream of the primary and secondary auxiliary seats
Data Source
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AI summary
The valve has a temporization chamber (11a) placed under a guide-rod (6) and defined by a temporization sleeve (11) in which a temporization piston (13) slides, where the piston carries a main plug (20) supported on a main seat (1c). A control rod (12) axially slides inside the guide-rod whose a lower part encloses primary and secondary auxiliary seats (6e, 6d). A lower part of the rod carries primary and secondary auxiliary plugs (9, 10), and primary and secondary decompression channels (6c, 6b) are provided in the lower part of the guide-rod upstream of the auxiliary seats.