Microvalve Device Independent Actuator Segmentation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing microvalve devices face challenges in precise control of fluid flow due to non-uniform actuator displacement and lack of linear relationship between electric signals and main valve opening, leading to imprecise and complex control of main valves.
Innovation Solution
A microvalve device composed of multiple layers with independent actuators controlling fluid ports, allowing for precise control of port openings and closures through electric signals, enabling open-loop and linear control of main valve operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single actuator drives a movable member to control multiple fluid ports, then the device structure is simplified, but the control precision and linearity between electric signal and main valve opening degree deteriorates
Solution Approach 1:
The patent divides the control system into multiple independent actuators, each dedicated to controlling a specific fluid port. This segmentation allows each actuator to independently and precisely control its corresponding port without interference from other ports, achieving linear control where the electric signal directly corresponds to the main valve opening degree. The movable member is divided into multiple independent control regions, each with its own actuator.
2Device complexity
If a single actuator controls multiple fluid ports, then the number of components is reduced, but the control linearity and open-loop control capability deteriorates
Solution Approach 1:
The patent implements segmentation by providing separate actuators for each fluid port (first fluid port, second fluid port, third fluid port). Each actuator receives independent control signals and produces proportional displacement that linearly controls the opening degree of its corresponding port. This enables open-loop control where the control signal directly determines the valve opening without complex feedback requirements.
3Device complexity
If the movable member slides to control three ports simultaneously, then the device structure is compact, but the relationship between electric signal and port opening becomes non-linear
Solution Approach 1:
The patent segments the control function by assigning dedicated actuators to each fluid port rather than using a single sliding movable member. Each actuator independently controls one port, creating a direct one-to-one relationship between control signal and port opening degree. This eliminates the non-linear relationships that arise when a single component must simultaneously control multiple ports with different flow requirements.
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 achieves precise and linear control of fluid flow, allowing for various fluid flow modes and improved control of main valves by independently managing each port's opening degree.
Implementation Method 1
Mechanical movement of the actuator is achieved by means of applying an electrical excitation to the actuator
Data Source
AI summary
A microvalve device and fluid flow control method, the microvalve device comprising: a microvalve body, the microvalve body being composed of multiple layers and comprising a first layer (1) and a second layer (2) bonded with the first layer (1), the second layer (2) having a plurality of fluid ports (7, 8, 9); a cavity (6) disposed between the first layer and the second layer; a plurality of actuators (3, 4, 5) respectively disposed corresponding to each fluid port, the plurality of actuators (3, 4, 5) controlling the opening and closing of the plurality of fluid ports (7, 8, 9). The fluid flow control method comprising: respectively employing a plurality of actuators to independently control the opening and closing of a plurality of fluid ports.