Filter Health Monitoring Using Pressure and Flow Feedback

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Solution Overview

Problem

Conventional abrasive particle suspension manufacturing systems lack effective monitoring capabilities for flow-circuit elements, leading to inefficient filter replacement and increased manufacturing costs due to inadequate monitoring of filter health, resulting in either premature or excessive replacement.

Innovation Solution

A system that includes a control system with sensors to monitor operational conditions of flow-circuit elements, such as filters and valves, by analyzing differential pressure and flow rate to calculate a flow resistance index, enabling accurate determination of when filters need replacement without affecting the quality of the abrasive particle suspension.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If conventional monitoring methods are used for flow-circuit elements, then the system is simple and easy to operate, but filter replacement timing is inaccurate leading to premature or excessive replacement

Engineering Contradiction:
Improvefilter health monitoring accuracyVSAvoidmonitoring system complexity
Core Design Contradiction:
Measurement precisionVSDevice complexity

Solution Approach 1:

The system continuously monitors differential pressure across the filter assembly and flow rate through the filter, providing real-time feedback on filter health. The processor compares actual measurements against baseline values to dynamically determine filter replacement timing, replacing filters based on actual condition rather than fixed schedules.

Inventive Principle:
Principle #23Feedback

Solution Approach 2:

The patent replaces conventional simple monitoring methods with an electronic sensing and processing system. Sensors electronically measure differential pressure and flow rate, and a processor automatically analyzes these signals to determine filter health, substituting mechanical judgment with electronic measurement and computation.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

2Reliability

If filters are replaced frequently to ensure fluid quality, then fluid quality is maintained, but manufacturing costs increase due to excessive replacement

Engineering Contradiction:
Improvefluid qualityVSAvoidmanufacturing cost
Core Design Contradiction:
ReliabilityVSLoss of energy

Solution Approach 1:

The system provides continuous feedback on filter performance through differential pressure and flow rate measurements. By monitoring actual filter condition in real-time, the system extends filter life until performance degradation actually occurs, preventing both premature replacement and quality compromise.

Inventive Principle:
Principle #23Feedback

Solution Approach 2:

The monitoring system enables the filter to effectively monitor its own health status through differential pressure sensing. The system determines when the filter actually needs replacement based on its own performance metrics rather than external schedules, optimizing replacement timing to maintain quality while reducing waste.

Inventive Principle:
Principle #25Self-service

3Ease of operation

If filters are replaced based on fixed schedules, then maintenance is simple to manage, but filter replacement may occur prematurely or too late affecting fluid quality

Engineering Contradiction:
Improvemaintenance management simplicityVSAvoidfluid synthesis quality
Core Design Contradiction:
Ease of operationVSManufacturing precision

Solution Approach 1:

The system replaces fixed-schedule maintenance with condition-based maintenance using real-time feedback from differential pressure and flow rate sensors. The processor continuously evaluates filter health and triggers replacement only when actual performance degradation is detected, optimizing both simplicity and precision.

Inventive Principle:
Principle #23Feedback

Solution Approach 2:

The system transitions from static fixed-schedule replacement to dynamic condition-based replacement. Filter replacement timing adapts to actual filter performance and operating conditions, allowing extended service life when filters perform well and prompt replacement when degradation occurs, rather than following rigid schedules.

Inventive Principle:
Principle #15Dynamics

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

This approach allows for timely and necessary filter replacements, reducing manufacturing costs while maintaining fluid integrity and quality by providing a more precise monitoring of filter health, optimizing fluid synthesis processes.

Implementation Method 1

the first sensed condition can be a differential pressure across the filter assembly

Methodology Applied
Scientific EffectDifferential pressure measurement: Pressure Drop

Implementation Method 2

the second sensed condition can be a flow rate of the fluid through the filter assembly

Methodology Applied
Scientific EffectFlow rate measurement:

Implementation Method 3

the flow-circuit element can be a filter assembly that includes a filter that filters the fluid

Methodology Applied
Scientific EffectFiltration: Filter (physical)

Data Source

PatentUS11090587B2Fluid synthesis monitoring system
Publication Date: 2021.08.17 NIKON CORP
  • US11090587B2 patent drawing
  • US11090587B2 patent drawing
  • US11090587B2 patent drawing

AI summary

A system (10) for moving a fluid (12) includes a flow-circuit element (30) and a control system (32) that monitors an operational condition of the flow-circuit element (30). The control system (32) includes a first sensor (82) that monitors a first sensed condition, and a second sensor (84) that monitors a second sensed condition that is different from the first sensed condition. Further, the control system (32) includes a processor (76) that analyzes the first sensed condition and the second sensed condition to monitor the operational condition of the flow-circuit element (30).