Encapsulated Solenoid Valve Piston for Vacuum Reliability
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Solution Overview
Problem
Solenoid valves used in vacuum environments face challenges due to materials' outgassing, adsorption of gases, and sublimation, which affect their reliability and performance in applications like cooling systems that utilize adsorbents.
Innovation Solution
A solenoid valve design featuring a ferromagnetic core encapsulated in a low-reactive outer shell, with a magnetic force component and biasing component to control the piston's position, suitable for use in vacuum conditions, utilizing materials resistant to outgassing and adsorption, such as austenitic stainless steels and other low-affinity materials.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional materials are used in solenoid valves for vacuum environments, then the valve structure is simple and easy to manufacture, but the materials undergo outgassing, adsorption, and sublimation which reduce reliability and performance
Solution Approach 1:
The patent introduces an encapsulation layer as an intermediary between the ferromagnetic core and the vacuum environment. This encapsulation layer prevents direct interaction between the core material and the vacuum, eliminating outgassing and adsorption issues while allowing the magnetic field to pass through effectively.
Solution Approach 2:
The patent employs composite material construction by combining a ferromagnetic core with an encapsulation layer. The core provides necessary magnetic properties while the encapsulation layer provides vacuum compatibility, creating a composite structure that achieves both magnetic functionality and vacuum reliability.
2Force
If the ferromagnetic core is exposed to vacuum environment, then the magnetic force component can directly interact with the core, but the core material undergoes harmful interactions with gases causing performance degradation
Solution Approach 1:
The encapsulation layer serves as a mediator that transmits the magnetic force from the magnetic force component to the piston while protecting the core material from harmful gas interactions. The layer is designed to be magnetically permeable while providing physical isolation from the vacuum environment.
Solution Approach 2:
The patent uses a thin encapsulation film that is flexible enough to allow magnetic field penetration while providing a protective barrier. This thin film structure maintains magnetic force transmission effectiveness while preventing material degradation from vacuum environment exposure.
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 encapsulated magnetic piston solenoid valve ensures reliable operation in vacuum environments by minimizing material interactions with gases, maintaining valve functionality and reducing contamination in cooling systems.
Implementation Method 1
a magnetic force drives the cylinder from an open position to a closed position. When reversed, the magnetic force drives the cylinder from a closed position to an open position
Implementation Method 2
materials' outgassing, adsorption of gases, and sublimation, which affect their reliability and performance in applications like cooling systems that utilize adsorbents
Implementation Method 3
materials' outgassing, adsorption of gases, and sublimation, which affect their reliability and performance
Implementation Method 4
Some solenoid valves include a biasing force that can move the cylinder, in the absence of or in conjunction with the magnetic force, to an open position (normally opened valve) or a closed position (normally closed valve)
Data Source
AI summary
Technologies are described herein or a solenoid valve having an encapsulated magnetic piston. In some examples, the piston comprises a ferromagnetic core encapsulated by a low reactive outer shell. In some examples, the low reactive outer shell is selected for use within a system at a vacuum. In further examples, the valve is used in a cooling system that uses an adsorbent.