Filter Clogging Detection via Driver Load Monitoring
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Solution Overview
Problem
Existing sieving systems face challenges in detecting filter clogging without using flow meters, which enlarges the system and complicates the apparatus.
Innovation Solution
A sieving system that includes a filter, a blade to stir the powder accumulated on the filter, a driver to drive the blade, and a notifier to inform the status of the filter based on the load of the driver, allowing for clogging detection without the need for flow meters.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If flow meters are used to detect filter clogging, then detection accuracy is improved, but device complexity increases
Solution Approach 1:
The patent extracts the detection function from complex flow meters and implements it using a simple load sensor that measures the driving force required to rotate the sieve. This removes the need for complex flow measurement devices while maintaining detection capability through an alternative physical quantity (load vs. flow rate).
Solution Approach 2:
The drive mechanism serving the sieve is given a dual function: it both drives the sieve rotation and provides load measurement for clogging detection. This multi-functional approach eliminates the need for separate detection devices, reducing overall system complexity while maintaining detection accuracy.
2Difficulty of detecting and measuring
If flow meters are installed to monitor powder flow, then detection capability is improved, but apparatus size increases
Solution Approach 1:
The patent merges the flow measurement function with the existing drive mechanism by measuring the load required to rotate the sieve. This combination integrates detection capability into the existing structure without adding separate measurement devices, thereby avoiding apparatus enlargement.
Solution Approach 2:
The patent replaces complex mechanical flow measurement systems with a simpler mechanical load measurement system. By measuring the driving force required to rotate the sieve instead of directly measuring powder flow, the system achieves detection capability with reduced apparatus volume.
Data Source
AI summary
A sieving system includes a filter; a blade stirring a powder accumulated on the filter; a driver driving the blade; a notifier notifying predetermined information of a status of the filter, based on a load of the driver while driving the blade.