Fluidic Valve Contactless Magnetic Force Transmission
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Solution Overview
Problem
Conventional fluidic valves in liquid chromatography suffer from high wear and limited lifetime due to the required pressing force for establishing a fluid-tight connection between the stator and rotor, especially under high pressure conditions.
Innovation Solution
A contactless force transmission mechanism using magnetic repulsion forces to press the stator and rotor together, allowing for self-adjustment and reduced wear, which maintains fluid-tightness with smaller pressing forces and minimizes leakage risks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional mechanical pressing is used to establish fluid-tight connection between stator and rotor, then fluid-tightness is achieved, but wear increases and lifetime is limited
Solution Approach 1:
The patent replaces the conventional mechanical spring pressing mechanism with a magnetic field-based force transmission mechanism. Magnets mounted on the rotor shaft generate magnetic attraction forces that press the rotor against the stator without direct mechanical contact between the pressing elements, thereby reducing wear while maintaining fluid-tight sealing under high pressure conditions
2Reliability
If higher pressing force is applied to maintain fluid-tightness under high pressure, then sealing performance improves, but wear and energy consumption increase
Solution Approach 1:
The magnetic pressing mechanism provides dynamic and adjustable pressing forces through the magnetic field, allowing the system to maintain optimal sealing performance under varying pressure conditions without the continuous high energy consumption associated with mechanical springs. The magnetic force can be adjusted by changing the magnetic field strength, enabling energy-efficient operation across different operating conditions
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 contactless force transmission mechanism reduces wear and extends the lifetime of the fluidic valve while ensuring fluid-tightness even under high pressure conditions, with lower friction and reduced operational energy consumption.
Implementation Method 1
a force transmission mechanism configured for pressing the stator and the rotor together by a contactless force transmission
Data Source
AI summary
A fluidic valve for switching between different fluid coupling states includes a stator having at least one fluidic stator interface, a rotor having at least one fluidic rotor interface, wherein the rotor is rotatable relative to the stator to thereby switch the fluidic valve between a plurality of different fluid coupling states between the at least one fluidic stator interface and the at least one fluidic rotor interface, and a force transmission mechanism configured for pressing the stator and the rotor together by a contactless force transmission to provide for a fluid tight sealing between the stator and the rotor.