Magnetic Filter With Alternating Polarity Columns
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Solution Overview
Problem
Conventional magnetic filters are limited by a weak magnetic field, requiring annular ferromagnetic extensions for contaminant trapping, leading to saturation issues, expensive maintenance, and operational interruptions due to complex cleaning processes.
Innovation Solution
A magnetic filter with an elongate magnetic core comprising at least four columns of magnets in alternating north and south polarity, creating a profiled magnetic field gradient that allows fluid flow channels, enabling continuous fluid flow at saturation point and facilitating easy cleaning with a smooth outer surface and internal magnetic keepering means.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional magnetic filters use annular ferromagnetic extensions to trap contaminant, then contaminant separation is improved, but the filter becomes contaminant-saturated quickly requiring expensive cleaning operations
Solution Approach 1:
The magnetic core is segmented into multiple columns of magnets arranged in alternating polarity, creating multiple separate contaminant trapping zones. This segmentation allows different regions of the filter to handle contaminant loads independently, extending the time before the entire filter becomes saturated and requiring cleaning operations.
Solution Approach 2:
The patent transitions from a single-plane contaminant trapping approach to a three-dimensional magnetic field distribution by arranging magnet columns in alternating polarity around the core axis. This creates multiple magnetic flux paths and trapping zones in different spatial dimensions, increasing the effective contaminant capacity without increasing the filter's external footprint.
2Area of stationary object
If conventional magnetic filters use ferromagnetic extensions to extend magnetic field depth, then magnetic field coverage is improved, but cleaning becomes complex requiring spray or jet washing
Solution Approach 1:
The patent extracts the ferromagnetic extension structures from the magnetic core design, eliminating the ribbed profiled structures that required complex spray or jet washing. Instead, it uses a smooth outer surface with internal magnetic keepering means to contain the magnetic field, dramatically simplifying the cleaning process while maintaining magnetic field coverage.
Solution Approach 2:
The patent introduces internal magnetic keepering means as an intermediary structure that contains and directs the magnetic field within the core, eliminating the need for external ferromagnetic extensions. This intermediary approach maintains magnetic field coverage while providing a smooth external surface that is easy to clean.
3Use of energy by stationary object
If conventional magnetic filters use weak magnetic field, then energy consumption is reduced, but contaminant trapping capacity is limited requiring frequent cleaning
Solution Approach 1:
The patent employs a composite magnetic structure combining permanent magnets arranged in alternating polarity columns with internal magnetic keepering means. This composite configuration creates a stronger and more distributed magnetic field than conventional single-plane arrangements, increasing contaminant trapping capacity while maintaining reasonable energy consumption through efficient magnetic flux utilization.
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 magnetic filter maintains fluid flow at contaminant saturation levels, prevents machine damage, and allows for quick and efficient cleaning, reducing operational interruptions and maintenance costs.
Implementation Method 1
the magnetic flux generated by a magnetic core within the filter
Implementation Method 2
Magnet filters have emerged as a suitable alternative to paper filters and function to separate particulate impurities via the magnetic flux generated by a magnetic core within the filter
Implementation Method 3
The effect of this is the creation of a profiled magnetic field gradient perpendicular to the core axis in turn providing 'fluid flow path channels' between the outer case and the magnetic core
Data Source
AI summary
A magnetic filter device capable of separating contaminant material from a working fluid. The device includes an inlet to allow fluid to flow into the device and an outlet to allow fluid to flow out of the device. The filter further includes an elongate magnetic core comprising at least four columns of magnets. At least two magnetic columns include a north polarity extending over the length of the columns and at least two columns have a south polarity extending substantially the length of the columns. The four columns are positioned lengthways around a central longitudinal axis of the core in alternating north and south polarity thereby generating a magnetic field of alternating high and low field intensity in the region around the magnetic core exterior.