Self-Closing Valve With Stationary Open Mode for Thermal Disinfection
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Solution Overview
Problem
Conventional self-closing valve devices often fail to maintain a fluid flow for extended periods, particularly in thermal disinfection applications, due to their automatic self-closing functionality, which limits the duration and quantity of hot water delivery.
Innovation Solution
The self-closing valve device incorporates a hydraulic damper unit with a movable piston and a prestressing unit, allowing for a special operating mode where the valve remains permanently open, overriding the automatic self-closing function, and includes a user-actuated adjustment mechanism to set the valve to a stationary open position, ensuring continuous fluid delivery without automatic shutdown.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of moving object
If the valve device operates in normal self-closing mode, then the valve automatically closes after temporary opening, but the fluid delivery duration is limited and insufficient for thermal disinfection applications
Solution Approach 1:
The valve device enables dynamic switching between two operational modes: normal self-closing mode and special stationary open mode. The adjustment unit allows the valve to transition from automatic self-closing behavior to a stationary open state, providing flexibility in operational duration and mode to meet different application requirements including thermal disinfection
Solution Approach 2:
The patent changes the operational parameter of the valve from temporary open with automatic closing to stationary open position. By adjusting the valve actuating unit to the stationary open position, the valve maintains fluid delivery for extended periods without automatic shutdown, thereby extending the duration parameter for thermal disinfection applications
2Duration of action of moving object
If the valve remains permanently open for thermal disinfection, then prolonged fluid delivery is achieved, but the self-closing functionality is lost
Solution Approach 1:
The valve device is designed with multi-functionality, capable of operating in both normal self-closing mode and special stationary open mode. The adjustment unit enables the valve to adapt to different operational requirements, making it universally applicable for both routine operations requiring automatic closing and thermal disinfection requiring prolonged open state
3Productivity
If the valve actuating unit is adjusted to stationary open position, then continuous fluid flow is maintained, but the automatic return to closed position is prevented
Solution Approach 1:
The valve system dynamically adjusts its operational characteristics based on the position of the adjustment unit. When the actuating unit is in the stationary open position, the valve maintains continuous fluid delivery without automatic closing. The system transitions from automatic behavior to manual control mode, enabling continuous operation when required
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 enables prolonged and controlled fluid delivery, specifically beneficial for thermal disinfection processes, by allowing the valve to remain open until manually switched back to normal operation, thus addressing the limitations of conventional self-closing valves.
Implementation Method 1
the valve actuating unit comprises a hydraulic damper unit, which includes a user-actuated, axially movable hydraulic cylinder and a displacer piston. The hydraulic cylinder has a piston chamber in which the displacer piston is movably arranged
Implementation Method 2
The self-closing valve device incorporates a hydraulic damper unit with a movable piston and a prestressing unit, allowing for a special operating mode where the valve remains permanently open
Data Source
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AI summary
2.1. The invention relates to a self-closing valve device with a valve closing element unit (1) which, in a normal operating mode of the self-closing valve device, is movably arranged between a valve closed position and a normal operating valve open position, and a valve actuating unit (2) which, in a stationary closed position, holds the valve closing element unit in its valve closed position and, in a temporary open position, holds the valve closing element unit in the normal operating valve open position, wherein the valve actuating unit moves from its stationary closed position to its temporary open position by user actuation and automatically from its temporary open position to its stationary closed position. 2.2.The self-closing valve device according to the invention includes a user-operated adjusting unit (3) which is configured to adjust the valve actuating unit (2) in a special operating mode of the self-closing valve device from its stationary closed position to a stationary special operating position (SA) in which the valve actuating unit holds the valve closing element unit (1) in a special operating valve open position (VA2). 2.3. Use, for example, as a self-closing sanitary mixing and shut-off valve device for sanitary water outlet fittings.