Solenoid Valve Segmentation for Fast Switching
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Solution Overview
Problem
Solenoid valves with three mouths and operating positions face challenges in controlling fluid flow due to varying pressure environments, leading to increased electromagnet size and switching times, which hinder high-speed response in applications requiring rapid fluid processing.
Innovation Solution
The solenoid valve incorporates coaxial open/close elements and contrast seats, allowing for hydraulic balancing and reduced pressure sensitivity, enabling efficient fluid control across different pressure environments with minimized switching times.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the electromagnet is sized to overcome maximum pressure forces for reliable actuation, then the reliability of valve operation is improved, but the switching time increases and response speed deteriorates
Solution Approach 1:
The valve is divided into two independent but cooperating elements: a first open/close element for the third mouth and a second open/close element for the second mouth. Each element has its own contrast seat and can operate independently. This segmentation allows the electromagnet to actuate smaller individual elements rather than a single large element, reducing switching time while maintaining reliability through cooperative operation.
Solution Approach 2:
The patent implements a dynamic actuation sequence where the second open/close element is actuated first to close the second mouth, creating a pressure condition that facilitates subsequent closing of the first open/close element. This dynamic sequencing optimizes the actuation process, reducing the overall switching time while ensuring reliable operation under varying pressure conditions.
2Reliability
If the electromagnet is sized to overcome maximum pressure forces, then the reliability of actuation is improved, but the dimensions and costs of the electromagnet increase
Solution Approach 1:
By segmenting the valve into two separate open/close elements with individual contrast seats, the electromagnet only needs to generate sufficient force to actuate each smaller element independently, rather than overcoming the combined maximum pressure forces on a single large element. This reduces the required electromagnet size and associated costs.
Solution Approach 2:
The electromagnet actuates the second open/close element first to a partial position that closes the second mouth, which creates favorable pressure conditions for the subsequent closing of the first element. This partial action approach allows the electromagnet to be sized for smaller initial force requirements rather than maximum force from the start.
3Adaptability or versatility
If the valve is designed to handle marked pressure swings and variable operating pressures, then the adaptability to different operating conditions is improved, but the control of moving elements becomes difficult and switching performance deteriorates
Solution Approach 1:
The valve is segmented into two independent elements that can respond independently to pressure variations. Each element has its own contrast seat and sealing mechanism, allowing them to adapt to different pressure conditions separately. This segmentation simplifies the control of each individual element compared to controlling a single complex element under varying pressures.
Solution Approach 2:
The valve employs dynamic pressure utilization where the actuation of the second element creates pressure conditions that facilitate the actuation of the first element. This dynamic interaction allows the valve to adapt to varying pressure conditions while maintaining ease of operation through cooperative element behavior.
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 allows for high-flow processing with extremely short switching times, independent of pressure levels, and reduces the size and energization requirements of the electromagnet, making it suitable for applications with high operating pressures.
Implementation Method 1
an electromagnet (8) that can be actuated for impressing on the second open/close element (14) a first movement
Implementation Method 2
the first open/close element (12) and the second open/close element (14) are coaxial to one another and hydraulically balanced
Data Source
AI summary
A solenoid valve comprises a first mouth for an inlet of a working fluid and a second mouth and a third mouth for an outlet of the working fluid. The valve has a first operating position in which a passage of fluid from the first mouth to the second mouth and the third mouth is enabled, a second operating position in which a passage of fluid from the first mouth to only one of the second and third mouths is enabled, and a third operating position in which the passage of fluid from the first to the second mouth and the third mouth is disabled.