Microgravity Powder Rehydration Syringe with Bubble Trap
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Solution Overview
Problem
In microgravity environments, existing systems lack an efficient and automated method for rehydrating powders and delivering the rehydrated substances to reactors, particularly in closed systems where gravity's absence complicates the handling and operation of rehydration processes.
Innovation Solution
A closed system comprising a liquid reservoir, a syringe for powder rehydration, a reactor, and a controller with conduits and one-way valves, along with a bubble trap and actuator, allows for controlled rehydration and delivery of the rehydrated powder to a reactor, ensuring no material escape and precise fluid flow.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a closed system is used in microgravity environment, then material containment and system integrity are improved, but automated rehydration and delivery operations become more difficult to implement
Solution Approach 1:
The system is divided into separate functional modules: a liquid reservoir, a syringe with powder container, a reactor, and a controller. Each component performs a specific function (liquid storage, powder rehydration, reaction processing, and automated control), enabling reliable automated operation in microgravity while maintaining system integrity through modular connections.
Solution Approach 2:
The syringe mechanism automatically draws liquid from the reservoir and delivers it to the powder without requiring manual intervention. The controller automates the entire rehydration process, including liquid transfer and mixing, allowing the system to perform rehydration operations autonomously in the closed microgravity environment.
2Device complexity
If conventional rehydration methods are used in microgravity, then system complexity is reduced, but effective powder rehydration and delivery cannot be achieved
Solution Approach 1:
The system employs a syringe mechanism that uses pneumatic or hydraulic principles to draw liquid from the reservoir and deliver it precisely to the powder. This controlled fluid delivery method ensures effective rehydration in microgravity where conventional gravity-dependent mixing methods fail, achieving high productivity without excessive complexity.
Solution Approach 2:
The system changes the physical parameters of the rehydration process by using controlled liquid flow rates, pressure differentials, and mixing mechanisms that are specifically adapted for microgravity conditions. These parameter adjustments enable effective powder rehydration and delivery while maintaining reasonable system complexity.
3Measurement precision
If automated control is implemented for rehydration, then operational precision is improved, but device complexity increases
Solution Approach 1:
The controller serves multiple functions: it manages liquid transfer from the reservoir, controls syringe operation for precise fluid delivery, monitors the rehydration process, and regulates mixing. By consolidating these functions into a single multi-functional controller, the system achieves high operational precision without proportionally increasing overall device complexity.
Solution Approach 2:
The controller implements feedback control to monitor and adjust fluid flow rates, mixing parameters, and rehydration progress in real-time. This feedback mechanism ensures precise operational control while optimizing the controller's efficiency, achieving measurement precision without excessive complexity through intelligent control algorithms.
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 system effectively rehydrates powders and delivers them to a reactor in microgravity conditions, preventing gas bubbles and ensuring accurate flow, thus maintaining system integrity and performance.
Implementation Method 1
the extemporaneous preparation is automatic since the device elements move by themselves under the action of the liquid which is drawn by suction into the volume under vacuum containing the solid formulation
Implementation Method 2
two one-way valves are provided, one of the one-way valves placed along the conduit in between the liquid reservoir and the syringe, allowing only from the liquid reservoir to the syringe to pass through
Implementation Method 3
a bubble trap positioned along the conduit to trap and vent gas out of the system
Implementation Method 4
an actuator for actuating a plunger of the syringe
Data Source
AI summary
A closed system for rehydrating powder and delivering the rehydrated powder to a reactor, may include a liquid reservoir for containing liquid; a syringe configured to contain powder to be rehydrated; a reactor; a controller for controlling operation of the syringe; and a conduit fluidically linking the liquid reservoir to a port of the syringe, fluidically linking the port to the reactor. The controller is configured to operate the syringe so as to draw liquid from the liquid reservoir into the syringe and rehydrate the powder, or to drive the rehydrated powder into the reactor.