Gravity-Fed Filter Interconnect Using Coded Polymagnets
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Solution Overview
Problem
Prior art filter interconnects face challenges with installation, removal, and replacement of filter cartridges, as well as authentication and anti-counterfeiting, without increasing manufacturing cost and complexity.
Innovation Solution
The use of coded polymagnets in a filter interconnect structure for a water pitcher, which generates a magnetic shear force to actuate a blocking member for fluid flow and ensures proper installation, authentication, and anti-counterfeiting through correlated magnetism.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If conventional magnetic attachment schemes are used, then filter cartridge installation is achieved, but magnetic forces cause flipping or misalignment issues
Solution Approach 1:
The magnetic attachment system is divided into multiple discrete magnet sources arranged in specific patterns on both the filter cartridge and hopper. This segmentation allows individual magnet forces to be controlled and combined to achieve stable alignment without flipping, as each magnet pair contributes to the overall attachment force in a predictable manner.
Solution Approach 2:
The magnetic field sources are configured with asymmetric polarity arrangements where adjacent magnets have opposite polarities. This asymmetric configuration creates directional magnetic forces that guide proper alignment during installation while preventing misalignment and flipping, as the magnetic attraction is strongest when the patterns are correctly oriented.
2Reliability
If authentication mechanisms are added to prevent counterfeiting, then security is improved, but manufacturing cost and complexity increase
Solution Approach 1:
The coded magnetic pattern serves multiple functions simultaneously: it provides the attachment force for filter installation, ensures proper alignment, and acts as an authentication code to prevent counterfeiting. This multi-functionality eliminates the need for separate authentication mechanisms, maintaining manufacturing simplicity while achieving security goals.
Solution Approach 2:
The authentication mechanism utilizes variations in magnetic field parameters (strength, polarity arrangement, spatial distribution) that are easily manufactured but create unique identifiable patterns. These parameter variations allow genuine filters to be distinguished from counterfeits without adding mechanical or electronic complexity to the manufacturing process.
3Ease of operation
If magnetic shear force is used to actuate blocking members, then fluid flow control is achieved, but magnetic force requirements increase
Solution Approach 1:
The magnetic field replaces traditional mechanical actuation systems (springs, levers, or motors) to control the blocking member. By configuring the magnetic sources to create shear forces, the system achieves fluid flow control through magnetic attraction and repulsion, eliminating the need for separate mechanical actuation mechanisms and reducing overall force requirements.
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 provides a reliable and cost-effective filter interconnect that facilitates easy installation and removal of filter cartridges while ensuring only genuine cartridges can be used, offering positive tactile feedback and enhanced security against counterfeiting.
Implementation Method 1
The invention utilizes a correlated magnet design that encompasses coded polymagnets, and more specifically, a magnetic attraction, repulsion, or combination thereof to generate shear force
Implementation Method 2
A magnetic force is introduced upon insertion of a filter cartridge into a mating water pitcher hopper to initiate magnetic interconnection
Implementation Method 3
The invention utilizes a correlated magnet design that encompasses coded polymagnets, and more specifically, a magnetic attraction, repulsion, or combination thereof to generate shear force
Implementation Method 4
the interconnection scheme utilizes mating polymagnets on the filter cartridge and hopper, respectively, to present a rotational force to permit filter cartridge installation
Data Source
AI summary
A gravity-fed filtration system and method of permitting fluid flow from a filter cartridge to a holding reservoir for a gravity-fed filtration system. The method comprises providing a filter cartridge having a filter magnet, a holding reservoir for filtered fluid, and a first reservoir having a recess receiving cavity in a bottom surface thereof for receiving ingress fluid. Upon inserting the filter cartridge into the recess receiving cavity and moving the filter magnet to be in magnetic communication with the carrier magnet, a magnetic field force moves the carrier magnet from a first position which blocks fluid flow, to a second position which allows fluid flow to the holding reservoir.