Sanitary Faucet Diaphragm Valve With Adjustable Minimum Flow
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Solution Overview
Problem
Sanitary faucet valves with diaphragm control systems face issues with varying supply pressures, leading to potential diaphragm oscillation and increased water consumption, as well as reduced adjustable flow rate ranges.
Innovation Solution
A valve design featuring a diaphragm valve with a counterpressure chamber and a control rod that can be adjusted between closed and open positions using a push button and rotary handle, allowing for variable minimum flow position adjustment to accommodate different supply pressures, preventing diaphragm oscillation and optimizing flow rates.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the control rod is designed to keep the diaphragm valve open sufficiently wide at minimum flow position to prevent oscillation at low supply pressures, then the reliability of valve operation is improved, but the minimum flow rate increases and water consumption increases
Solution Approach 1:
The patent makes the minimum flow position of the control rod variable rather than fixed. The control rod can be adjusted to different minimum flow positions depending on the supply pressure conditions. This dynamic adjustment allows the valve to maintain reliable operation (prevent oscillation) when supply pressure is low, while minimizing water consumption when supply pressure is normal, thus resolving the contradiction between reliability and water consumption.
2Reliability
If the control rod is designed to keep the diaphragm valve open sufficiently wide at minimum flow position to prevent oscillation at low supply pressures, then the reliability of valve operation is improved, but the adjustable range of flow rate decreases
Solution Approach 1:
By making the minimum flow position variable through adjustment mechanisms (threaded connection or sliding connection), the valve can adapt to different supply pressure conditions. When supply pressure is low, the control rod is adjusted to a position that prevents oscillation. When supply pressure is normal, the control rod is adjusted to minimize flow, thereby maximizing the adjustable range. This dynamic adaptability resolves the contradiction between reliability and adjustable range.
3Reliability
If the control rod position is fixed to ensure proper operation at low supply pressures, then the reliability is improved, but the adaptability to varying supply pressures decreases
Solution Approach 1:
The patent implements a variable minimum flow position for the control rod that can be adjusted according to supply pressure conditions. The adjustment mechanisms (threaded connection with adjusting screw or sliding connection with adjusting element) enable the control rod to be repositioned. This dynamic configuration allows the valve to adapt to varying supply pressures while maintaining reliable operation across different pressure conditions, resolving the contradiction between reliability and adaptability.
4Device complexity
If the control rod is designed with a fixed minimum flow position, then the device complexity is reduced, but the adaptability to varying supply pressures worsens
Solution Approach 1:
The patent adds adjustment mechanisms (threaded connection with adjusting screw or sliding connection with adjusting element) to the control rod design. While this increases device complexity slightly, it enables the minimum flow position to be variable rather than fixed. This variable position allows the valve to adapt to varying supply pressures, resolving the contradiction between device complexity and adaptability by introducing minimal additional components that provide significant functional benefits.
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 valve ensures reliable operation across varying supply pressures, minimizing water consumption and maximizing the adjustable flow rate range by allowing precise adjustment of the minimum flow position without affecting the rotary handle's operation.
Implementation Method 1
a diaphragm valve (5) having a diaphragm (6) and a counterpressure chamber (7) connected to the at least one inlet (3)
Implementation Method 2
a control rod (8) for controlling the diaphragm valve (5), wherein a push button (9) can be used to adjust the control rod (8) between a closed position, in which the diaphragm valve (5) is closed, and an open position, in which the diaphragm valve (5) is at least partially open
Data Source
AI summary
A valve (1) for a sanitary faucet, comprising:a liquid duct (2) having at least one inlet (3) and at least one outlet (4) for a liquid;a diaphragm valve (5) having a diaphragm (6) and a counterpressure chamber (7) connected to the at least one inlet (3); anda control rod (8) for controlling the diaphragm valve (5), wherein a push button (9) can be used to adjust the control rod (8) between a closed position, in which the diaphragm valve (5) is closed, and an open position (10), in which the diaphragm valve (5) is at least partially open, wherein a rotary handle (11) can be used to adjust the control rod (8) in the open position (10) between a minimum flow position (12), in which a minimum flow rate of the liquid flows through the at least one outlet (4), and a maximum flow position (13), in which a maximum flow rate of the liquid flows through the at least one outlet (4), and wherein the minimum flow position (12) of the control rod (8) can be variably adjusted.