Permanently Open Liquid Container Pressure Control
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Solution Overview
Problem
Permanently open containers used for metering and storing liquids in biological and chemical processes face issues with liquid distribution changes due to external factors like jolting, temperature, and pressure changes, leading to loss and reduced precision in metering.
Innovation Solution
Monitoring pressure conditions within the container using sensors and initiating appropriate reactions to counteract changes, such as redistributing the liquid through a gas phase, to maintain stable liquid distribution and precision.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If permanently open containers are used for metering liquids, then simplicity and ease of handling are improved, but liquid distribution stability deteriorates due to external factors like jolting and temperature changes
Solution Approach 1:
The system continuously monitors pressure changes within the container using pressure sensors and automatically adjusts the liquid level by introducing or removing gas phase, creating a closed-loop feedback mechanism that maintains liquid distribution stability despite external disturbances
Solution Approach 2:
The container system automatically compensates for liquid distribution changes through its own internal mechanisms (pressure monitoring and gas phase adjustment) without requiring external intervention or closure devices, maintaining stability while preserving ease of handling
2Ease of manufacture
If permanently open containers are used, then production costs and sterilizability are improved, but metering precision deteriorates due to liquid loss and distribution changes
Solution Approach 1:
Pressure sensors continuously monitor the container interior and trigger automatic gas phase adjustment to prevent liquid loss and maintain precise liquid levels, ensuring metering precision without requiring expensive closure mechanisms
Solution Approach 2:
The system replaces mechanical closure devices (screw caps, hose clamps) with a pressure-based control system that uses gas phase introduction/removal to maintain liquid distribution, achieving both precision and cost-effectiveness
3Stability of the object's composition
If pressure monitoring and automatic response are implemented, then liquid distribution stability is improved, but device complexity increases
Solution Approach 1:
The system uses gas phase pressure control to manage liquid distribution, leveraging pneumatic principles to automatically adjust liquid levels through pressure differential changes rather than complex mechanical or electronic control systems
Solution Approach 2:
The system maintains liquid distribution stability by dynamically changing the pressure parameter within the container through gas phase introduction or removal, a simpler approach compared to mechanical closure or active pumping systems
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 method ensures robust and precise metering and storage of liquids in permanently open containers by continuously monitoring and adjusting to pressure changes, preventing loss and maintaining sterility and precision across various environmental conditions.
Implementation Method 1
the pressure in the container is monitored by at least one pressure sensor which transmits the pressure data detected by the sensor
Implementation Method 2
The gas phase of the container content is, in a preferred embodiment, more compressible than the liquid phase. This allows in particular for the detection of pressure changes only by means of the gas phase
Implementation Method 3
This is causal for this is a balance from the ambient air pressure, the hydrostatic pressure of the liquid, the pressure in the container, and surface and capillary effects
Implementation Method 4
This is causal for this is a balance from the ambient air pressure, the hydrostatic pressure of the liquid, the pressure in the container, and surface and capillary effects
Data Source
AI summary
A method for metering and storing liquids by means of a permanently open container (1), wherein: the container (1) comprises a liquid reservoir (11) in which at least one liquid (2) is contained for storage; the container (1) has at least one opening (15) for the metered discharging of the liquid from the liquid reservoir (11); the opening (15) is permanently open; influencing factors affect at least one change in pressure (4) in the container (1); influencing factors render the system formed of the container (1) and liquid (2) unstable; the pressure (4) is detected in at least one location in the container (1); and, subject to at least one detected change in pressure (4), at least one reaction (9) is initiated that is suitable for maintaining the system of the container (1) and liquid (2) in a stable state or for re-establishing this stable state.