Magnetic Shutter Assembly With Filtration for Reliable Compact Valves
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Solution Overview
Problem
Existing solenoid valves face issues with precision, speed, and reliability due to parasitic magnetic effects, non-uniform magnetic fields, galling by depression, and calcareous precipitations, especially in compact and fast-operated bistable valves, leading to blockages and wear.
Innovation Solution
A magnetically operable shutter assembly with a fixed and movable core, encapsulation body, and filtration/retention means, along with separation facilitating features, designed for easy manufacturing and installation in various valve sizes, ensuring precise and repeatable operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the shutter stroke is reduced to achieve compact valve size, then the valve becomes more compact and faster operating, but parasitic magnetic effects and non-uniform magnetic fields increase leading to blockage and unsynchronized opening/closing
Solution Approach 1:
A non-magnetic spacer element is introduced as an intermediary component between the movable shutter and the valve body. This spacer acts as a mediator that maintains a controlled gap, preventing direct contact while allowing precise magnetic actuation. The spacer eliminates parasitic magnetic effects by providing a non-magnetic barrier, ensuring reliable shutter operation in compact valve designs.
2Speed
If electromagnetic field modulation is increased to improve response speed, then the valve responds faster, but the chances of wrong commands, missing movements or unsynchronized shutter movements increase
Solution Approach 1:
A feedback mechanism is implemented that monitors the actual shutter position and compares it with the commanded position. The system adjusts the electromagnetic field modulation in real-time based on this feedback, correcting any deviations or unsynchronized movements. This ensures that even at high response speeds, the shutter movements remain precisely synchronized with the operator commands.
3Reliability
If the shutter operates in contact with fixed valve parts to ensure sealing, then sealing is improved, but galling by depression occurs when electromagnetic impulse is insufficient to overcome vacuum adhesion
Solution Approach 1:
A non-magnetic spacer element is introduced as an intermediary component between the movable shutter and the valve body. This spacer acts as a mediator that maintains a controlled gap, preventing direct contact while allowing precise magnetic actuation. The spacer eliminates parasitic magnetic effects by providing a non-magnetic barrier, ensuring reliable shutter operation in compact valve designs.
4Ease of operation
If fluid stagnation is allowed in the valve body for normal operation, then the valve functions normally, but calcareous precipitations accumulate causing galling, blockage and excessive wear
Solution Approach 1:
Filtration and retention means are integrated into the valve structure to extract and remove calcareous precipitations from the fluid before they can accumulate on moving parts. The filtration system continuously separates these deposits from the fluid stream, preventing their accumulation on the shutter and other components, thereby eliminating galling and blockage issues while maintaining normal valve operation.
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 shutter assembly achieves optimal operation with high precision, speed, and infinite repeatability, minimizing size and manufacturing costs while preventing blockages and wear, and is versatile for different hydraulic or pneumatic circuits.
Implementation Method 1
a movable core (3), which can be moved relative to the fixed core (2) by induction and/or modulation and/or variation of an electromagnetic field
Implementation Method 2
there may be provided a permanent magnet (5) circuitally associated, from an electromagnetically point of view, to the fixed core (2) and/or to the movable core (3)
Data Source
AI summary
A magnetically-operable shutter assembly comprises a fixed core and a movable core which can be configured between a contact condition and a condition of the utmost mutual distance and further comprises an encapsulation body capable of simultaneously containing the fixed core and the movable core; the encapsulation body can be installed within a body of a complex functional assembly which is configurable at least in a hindrance configuration for a fluid flow and in an admittance configuration for said fluid flow through the complex functional assembly itself.