Fluidic Valve Oscillation to Prevent Contamination Buildup
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Solution Overview
Problem
Fluidic valves in liquid chromatography systems often suffer from contamination and reduced mobility due to salt precipitation or substance polymerization in the mobile phase, leading to impaired valve function.
Innovation Solution
A fluidic valve design featuring a valve seat, a valve sealing body, a force transmission element, and an actuator mechanism that enables additional movements beyond opening and closing, such as oscillations, to clean the valve and maintain mobility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a fluidic valve is used to control mobile phase flow, then precise separation of fluidic sample is enabled, but salt precipitation or substance polymerization contaminates valve members and deteriorates their free mobility
Solution Approach 1:
The patent applies mechanical vibration by triggering the valve sealing body to perform oscillation movements (reference movements) in addition to opening and closing movements. The actuator mechanism generates vibrations that cause the valve sealing body to oscillate against the valve seat, which prevents contamination buildup and maintains free mobility of the valve members, thereby resolving the reliability issue while preserving separation precision
Solution Approach 2:
The patent implements periodic action by repeatedly triggering the valve sealing body to execute reference movements (oscillations) at defined intervals. This periodic oscillation creates continuous cleaning action that prevents salt precipitation and polymerization from accumulating, maintaining valve reliability throughout the separation process
2Reliability
If additional movement is added to the valve sealing body, then robustness against contamination is enhanced, but device complexity increases
Solution Approach 1:
The patent applies universality by designing the actuator mechanism to perform multiple functions: it executes both the conventional opening/closing movements and the additional reference movements (oscillations) for cleaning. This multi-functionality allows the same actuator to provide both valve operation and contamination prevention, enhancing robustness without proportionally increasing device complexity
Data Source
AI summary
A fluidic valve includes a valve seat, a valve sealing body placeable at the valve seat when the fluidic valve is closed and being displaced with respect to the valve seat when the fluidic valve is open, a force transmission element coupled with the valve sealing body, and an actuator mechanism configured for actuating the force transmission element for triggering the valve sealing body to carry out an additional movement different from an opening movement and a closing movement of the valve sealing body.