Shape Memory Alloy Valve Routing for Compact Fluid Management
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Solution Overview
Problem
Current fluid management systems are often heavy, bulky, and customized for specific applications, lacking efficiency and flexibility in routing air and other fluids across various industries.
Innovation Solution
A modular fluid management system utilizing shape memory alloy materials for actuation, allowing for efficient fluid routing through a housing with integrated ports and actuators that can be selectively heated to change positions, reducing component count and assembly time.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Weight of moving object
If conventional valves and actuators are used for fluid management, then fluid routing function is achieved, but the system becomes heavy and bulky
Solution Approach 1:
The patent combines the actuator and biasing element into a single integrally formed shape memory alloy component. The actuator includes a shape memory alloy material that serves both as the actuating mechanism and the biasing element, eliminating the need for separate components and reducing overall system mass and complexity.
Solution Approach 2:
The shape memory alloy actuator performs multiple functions: it provides the actuating force to move the valve body, serves as the biasing element to maintain valve position, and enables bidirectional fluid flow control. This multi-functionality reduces the number of components needed in the fluid management system.
2Adaptability or versatility
If conventional customized valves are designed for specific applications, then application-specific performance is achieved, but design time and assembly time increase
Solution Approach 1:
The fluid management system uses standardized modular components including the housing with integrated ports, the valve body, and the shape memory alloy actuator that can be configured for different applications. This modular universal design allows the same basic components to serve multiple applications, reducing design and assembly time.
Solution Approach 2:
The system is divided into modular segments: a housing with integrated ports, a movable valve body, and an integrated actuator-biasing element assembly. These modular segments can be independently manufactured and then assembled, reducing overall assembly time while maintaining application-specific customization through configuration rather than redesign.
3Device complexity
If shape memory alloy actuators are used, then component count is reduced, but heating control complexity increases
Solution Approach 1:
The shape memory alloy actuator is self-actuating through resistive heating. When electrical current is applied, the shape memory alloy material heats itself and automatically undergoes phase transformation to change shape and move the valve body. This self-service mechanism eliminates the need for complex external heating control systems, sensors, or feedback mechanisms.
Solution Approach 2:
The patent replaces complex mechanical actuation systems with a thermal-field-based shape memory alloy actuation mechanism. Instead of using motors, linkages, or mechanical springs, the system uses electrical heating to trigger shape memory effects, simplifying the overall system architecture while reducing component count.
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 achieves reduced mass, increased design flexibility, improved electromagnetic compatibility, and quieter operation compared to conventional systems, while minimizing packaging footprint and assembly time.
Implementation Method 1
The actuator includes a shape memory alloy material. The actuator is configured to move the valve body to one of the first position or the second position against a biasing force of the biasing element in response to heating the actuator.
Implementation Method 2
A biasing element is coupled to the valve body, and the biasing element is configured to bias the valve body toward one of the first position or the second position.
Implementation Method 3
The power source is configured to selectively drive current through the actuator to heat the actuator.
Data Source
AI summary
A fluid management system includes a housing with a first port, a second port, and a third port, and a valve body moveable within the housing between a first position and a second position. The valve body is configured to seal the third port and permit fluid flow between the first and second ports in the first position, and to seal the first port and permit fluid flow between the second and third ports in the second position. The system further includes an actuator coupled to the valve body. The actuator includes a shape memory alloy material. A biasing element is coupled to the valve body to bias the valve body toward one of the first or second positions. The actuator is configured to move the valve body to one of the first or second positions against a biasing force of the biasing element in response to heating the actuator.