Oscillation Nozzle Monitoring for Precise Fluid Free Jet Sensing
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Solution Overview
Problem
Existing methods for monitoring fluid jets are prone to signal noise and contamination issues, particularly with optical sensors, and pneumatic sensors face challenges in maintaining system robustness due to air flow interactions with fluid jets, leading to inaccurate measurements.
Innovation Solution
An oscillation nozzle with a main channel and surrounding secondary channels, featuring a drill hole, which generates a robust periodic signal by measuring the oscillation frequency and amplitude of the air flow, allowing for precise fluid volume determination without significant beam deflection or contamination impact.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If optical sensors are used to detect fluidic free jet, then detection capability is improved, but sensor reliability deteriorates due to contamination from droplets and debris
Solution Approach 1:
The patent replaces optical sensors with a pneumatic sensor system that uses gas flow dynamics to detect fluid jets. The sensor measures pressure changes in a gas flow field created by oscillating nozzles, eliminating the contamination issues that plague optical sensors while maintaining detection capability through pneumatic interaction with the fluid jet
Solution Approach 2:
The patent introduces an intermediary gas flow field between the sensor and the fluid jet. The oscillating nozzles create a controlled gas flow that interacts with the fluid jet, and the sensor measures pressure changes in this intermediary medium rather than directly contacting the fluid, thereby preventing contamination
2Reliability
If pneumatic sensors use high air volume flow to detect fluid jet, then detection robustness is improved, but measurement precision deteriorates due to fluid jet deflection
Solution Approach 1:
The patent employs oscillating nozzles that dynamically adjust the gas flow characteristics. The nozzles oscillate at controlled frequencies to create a dynamic gas flow field that maintains detection robustness while minimizing disturbance to the fluid jet trajectory through periodic rather than continuous high-velocity flow
Solution Approach 2:
The patent changes the parameters of the gas flow by using oscillating nozzles that vary flow velocity, direction, and pressure over time. This dynamic parameter adjustment allows the system to maintain robust detection capability while reducing the average force exerted on the fluid jet, thereby preserving measurement precision
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 provides a robust and self-cleaning measurement system that is resistant to external disturbances, ensuring accurate fluid volume measurement by tracking changes in oscillation frequency and amplitude, while maintaining system integrity and flexibility in detecting various fluid forms.
Implementation Method 1
An oscillation nozzle (1) is provided which has a main channel (15) and at least one secondary channel (10, 11} surrounding the main channel (15)
Implementation Method 2
the secondary channel (10, 11) comprises a drill hole (5)
Data Source
AI summary
A system and method for monitoring a dispensed fluid jet with an oscillation nozzle, comprising a main channel and at least one secondary channel surrounding the main channel, wherein the nozzle has an inlet and an outlet for an air flow defining a flow axis running centrally through the main channel, characterized in that the secondary channel comprises a drill hole.