Polygonal Magnet Configuration for Magnetic Particle Separation
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Solution Overview
Problem
Existing magnetic particle separation technologies face challenges in scalability and complexity when dealing with larger volumes, as well as logistical issues in producing separators for diverse applications, due to the need for multiple types of magnets and intricate geometric configurations.
Innovation Solution
A magnetic field generator with a polygonal configuration of magnets, where each magnet has a specific geometric configuration and magnetization orientation, allowing for a reduced number of magnet types and enabling flexible design for various sizes and characteristics, using either one or two types of magnets to achieve a substantially constant magnetic gradient throughout the inner space.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a north-south distribution of magnets with number of magnets equal to number of magnetic poles is used, then the magnetic field configuration is simplified, but the magnetic gradient becomes practically inexistent at the centre of the sample when the number of poles is higher than four
Solution Approach 1:
The patent applies asymmetry by using a polygonal configuration where the number of magnets exceeds the number of magnetic poles. This asymmetric arrangement creates a non-uniform magnetic field with substantial gradients throughout the inner space, including at the centre, resolving the contradiction between simplified configuration and effective magnetic gradient generation.
2Manufacturing precision
If multiple types of magnets with intricate geometric configurations are used to achieve desired magnetic field characteristics, then the magnetic field uniformity and gradient are improved, but the production complexity and costs increase
Solution Approach 1:
The patent implements universality by designing a system where a single type of polygonal magnet serves multiple functions. The same magnet geometry and material can be used to generate different magnetic field configurations (dipolar, quadrupolar, etc.) by simply changing the arrangement pattern, thereby achieving field uniformity without increasing production complexity.
Solution Approach 2:
The patent applies parameter changes by modifying the angular positioning and orientation of identical polygonal magnets to achieve different magnetic field characteristics. By changing geometric parameters (angular positions, orientations) rather than material or shape parameters, the system achieves versatile magnetic field control with simplified production.
3Productivity
If the magnetic field generator is designed for specific volumes and applications, then the separation effectiveness is optimized, but the adaptability to different volumes and applications is reduced
Solution Approach 1:
The patent implements dynamics by creating a modular magnetic field generator where the same polygonal magnet units can be dynamically reconfigured for different volumes and applications. The system transitions from static, application-specific designs to a dynamic, adaptable configuration that maintains separation effectiveness across varying conditions.
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
This configuration allows for efficient and flexible magnetic particle separation across different volumes and applications, reducing production complexity and costs by using fewer types of magnets, while maintaining a strong magnetic gradient for effective separation.
Implementation Method 1
The magnets are distributed angularly... in order to generate a magnetic field with a number P of poles... the orientation or direction of magnetization of the magnets follows an angular progression... to achieve a magnetic field with a large substantially constant magnetic gradient throughout the inner space
Implementation Method 2
By applying a magnetic field, the magnetic particles are separated from the rest of the sample... the magnetic particles are concentrated in a part of the recipient, where they are retained
Data Source
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AI summary
The invention relates to a method and device for separating magnetic particles, for separating magnetic particles from a sample housed in an inner space (1) of the separating device. In accordance with the invention, the magnetic field is generated with a specific configuration of the magnets (3). This specific configuration enables devices of different sizes with a reduced number of magnets or types of magnets to be established.