Brush Mandrel Bore Sizing for Uniform Substrate Cleaning Flow
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional substrate cleaning brushes experience variability in fluid flow through the mandrel, which affects the removal of contaminants and the efficiency of cleaning processes.
Innovation Solution
The design of a brush mandrel with a bore configured to provide uniform aperture flow rates between 200 ml/min and 2 L/min, ensuring consistent pressure distribution across the brush body, using a polymeric material with apertures and a fastener system to attach to a support arm.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional mandrels are used, then the brush can deliver substances to the substrate, but the fluid flow through the mandrel is variable, which negatively impacts contaminant removal and cleaning efficiency
Solution Approach 1:
The mandrel is designed with a specific bore diameter (0.375 inches or 9.525 mm) that creates a particular flow regime. This local geometric quality ensures uniform fluid distribution through the mandrel aperture, directly addressing the flow uniformity problem while maintaining reliable cleaning efficiency.
2Quantity of substance
If the mandrel bore diameter is reduced to increase aperture flow rates, then fluid delivery to the brush is improved, but pressurization and leaking increase
Solution Approach 1:
The mandrel bore diameter is precisely set at 0.375 inches (9.525 mm), which is a specific parameter value that balances aperture flow rate with acceptable pressurization levels. This parameter optimization ensures uniform fluid distribution without excessive pressure that would cause leaking, while still delivering sufficient quantity of cleaning substance to the brush aperture.
Data Source
Figure 1
Figure 2A~2B
Figure 3A~3C
AI summary
An example brush for cleaning of a substrate with a fluid, the brush comprising a polymeric brush body comprising one or more contact surfaces for cleaning the substrate, a mandrel configured to support the polymeric brush body and comprising a plurality of apertures distributed over a surface of the mandrel, and a bore configured to supply the polymeric brush body with fluid via the plurality of apertures, the bore having a diameter sufficient to supply the plurality of apertures with substantially uniform aperture flow rates.