Magnetic Filter Interconnect for Precise Alignment and Easy Removal
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Solution Overview
Problem
Existing interconnection schemes between filter cartridges and manifolds lack efficient mechanisms for attachment, detachment, and primary function activation, often resulting in high frictional forces and undesirable attachments.
Innovation Solution
A 'torque/align' model utilizing correlated magnets is introduced, where one magnet on the filter cartridge applies torque to a non-contacting corresponding magnet on the manifold for alignment and attachment, and a repulsion force is generated to assist in filter cartridge removal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If conventional magnetic attachment schemes are used, then attachment force is provided, but frictional forces are high and precise alignment is difficult to achieve
Solution Approach 1:
The magnetic attachment system is segmented into multiple discrete magnet sources arranged in specific patterns on both the filter cartridge and manifold. This segmentation allows individual magnet pairs to contribute to alignment at specific locations, reducing the need for high frictional forces across the entire interface and enabling more precise alignment through distributed magnetic forces.
Solution Approach 2:
Different regions of the magnetic attachment interface have different magnetic field strengths and configurations tailored to specific functions. High-field regions provide strong attachment forces where needed, while lower-field regions with precise positioning provide alignment guidance, eliminating the need for uniformly high frictional forces across the entire interface.
2Force
If strong magnetic attachment is used, then secure connection is achieved, but detachment becomes difficult due to high holding forces
Solution Approach 1:
The magnetic attachment system transitions from a static strong magnetic field to a dynamic system where the magnetic field strength and direction can change during detachment. By rotating the filter cartridge to misalign the correlated magnet patterns, the holding force dynamically decreases, allowing easy detachment without requiring excessive force to overcome constant strong magnetic attraction.
Solution Approach 2:
The magnetic interaction parameters (alignment, field strength, polarity configuration) are changed during the attachment and detachment process. During attachment, magnets are aligned to maximize attraction; during detachment, the filter cartridge is rotated to misalign the patterns, changing the magnetic parameter from maximum attraction to minimal interaction, enabling easy removal.
3Measurement precision
If multiple magnet sources are added to improve alignment precision, then alignment accuracy increases, but device complexity increases
Solution Approach 1:
The correlated magnet patterns serve multiple functions simultaneously: they provide attachment force, enable precise alignment, and facilitate easy detachment through rotation. This multi-functionality eliminates the need for separate alignment mechanisms and reduces overall device complexity despite using multiple magnet sources.
Solution Approach 2:
The magnet patterns use asymmetric correlated configurations where the arrangement of magnetic poles and sources is deliberately non-uniform. This asymmetry creates strong directional alignment forces that guide the filter cartridge into precise alignment while maintaining relatively simple magnet arrays that do not require high complexity.
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 enables precise alignment and attachment of the filter cartridge to the manifold, allowing for efficient activation of primary functions such as turning fluid ON or OFF, while also facilitating easy removal through a repulsion force.
Implementation Method 1
the manifold magnet and the filter magnet are interconnected via magnetic communication with one another upon insertion of the filter cartridge into the shroud
Implementation Method 2
a repulsion force is introduced upon filter cartridge rotation to assist in the filter cartridge removal from the manifold
Implementation Method 3
one magnet on the filter cartridge applies a torque to a non-contacting corresponding magnet on the manifold when they are in phase
Data Source
Figure 1
Figure 2
Figure 3A
AI summary
A filtration system interconnection structure having manifold with a rotatable manifold magnet of correlated magnets, a shroud with alignment tracks, an actuating valve for water ingress, and a filter cartridge having a rotatable filter magnet of correlated magnets, where the manifold magnet and the filter magnet are in magnetic communication with one another when the filter cartridge is inserted with the shroud, and are at least partially rotatably compatible, where the manifold magnet rotates with the filter magnet until the manifold magnet experiences a rotational stop beyond a predetermined rotation of the filter magnet, thus allowing the filter magnet to shift polarity with respect to the manifold magnet and present a repulsion force for removal of the filter cartridge from the shroud.