Magnetically Actuated Elastic Valves for Lightweight Fluid Control
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Solution Overview
Problem
Conventional fluidic valves are often bulky, expensive, and complex, limiting their utility in applications requiring simple, inexpensive, and lightweight fluid control, especially in single-use scenarios.
Innovation Solution
Development of actuated elastic valves using magnetic materials and electroactive polymers that transition between open and closed configurations in response to magnetic fields or voltage potentials, allowing for controlled fluid flow without the need for complex mechanisms.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional valves are used to control fluid flow, then reliable fluid control is achieved, but the device becomes bulky, expensive, and complex
Solution Approach 1:
The patent replaces conventional mechanical valve actuation mechanisms with magnetic field actuation. The elastic diaphragm containing magnetic particles responds to external magnetic fields to transition between open and closed states, eliminating the need for complex mechanical linkages, motors, or pneumatic systems while maintaining reliable fluid control.
Solution Approach 2:
The invention uses composite materials by incorporating magnetic particles within an elastic diaphragm matrix. This composite structure combines the flexibility and sealing capability of elastic materials with the magnetic responsiveness of magnetic particles, enabling actuation without complex mechanical components.
2Reliability
If conventional valves are used to control fluid flow, then reliable fluid control is achieved, but the device becomes bulky and expensive
Solution Approach 1:
The patent replaces heavy mechanical actuation systems with lightweight magnetic field actuation. The elastic diaphragm with magnetic particles can be actuated by external magnets or electromagnetic fields, eliminating the need for heavy motors, gears, or pneumatic cylinders, thus significantly reducing valve weight.
Solution Approach 2:
The invention uses a thin elastic diaphragm as the valve element, which is inherently lightweight compared to rigid valve components. The diaphragm's flexibility allows it to respond to magnetic actuation forces, enabling effective fluid control with minimal mass.
3Device complexity
If simple valve structures are used, then device complexity is reduced, but manufacturing precision and material properties must be optimized
Solution Approach 1:
The patent employs composite materials with magnetic particles dispersed in an elastic matrix, requiring precise control of particle distribution, concentration, and size to achieve consistent magnetic responsiveness and mechanical properties. This composite approach simplifies overall valve structure while demanding high manufacturing precision in material fabrication.
Solution Approach 2:
The invention requires optimization of material parameters such as magnetic particle concentration, elastic modulus, diaphragm thickness, and magnetic particle size to achieve the desired balance between magnetic actuation responsiveness and mechanical performance. These parameter optimizations are critical for manufacturing precision.
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 solution provides a compact, cost-effective means of fluid control, enabling precise regulation of fluid flow rates and suitability for various applications, including liquid handling and single-use systems, by leveraging the deformation of elastic diaphragms under magnetic or electroactive stimuli.
Implementation Method 1
the elastic diaphragm is configured to transition from the closed configuration to the open configuration when a magnetic field applied to the elastic diaphragm is altered
Implementation Method 2
the elastic diaphragm is configured to transition from the closed configuration to the open configuration when a voltage potential applied to the elastic diaphragm is altered
Data Source
AI summary
Valves, systems, articles, and methods for controlling fluid flow are generally described. According to some aspects, valves that can move between an open configuration and a closed configuration in response to a change in magnetic field and/or voltage potential are provided. According to certain aspects, valves comprising elastic diaphragms comprising magnetic materials (e.g., an elastic composite material including magnetic nanoparticles or other magnetic materials dispersed in a matrix) and/or electroactive polymers are provided. In some aspects, magnetically actuated systems and/or voltage potential actuated systems comprising elastomeric valves are described. In some embodiments, valves and systems described herein are useful for liquid handling, dosing, and regulation of fluid flow, though embodiments in which the disclosed valves are used in different applications are also contemplated.