Segmented Rotor Magnetization for Compact High-Torque Coupling
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional magnetic coupling elements have limitations in magnetization density, leading to unfavorable magnetic coupling behavior, especially in applications with limited installation space such as medical devices implanted in the body.
Innovation Solution
A rotor is designed using alternately or orthogonally magnetized shell elements to form a magnetic body with high magnetic flux, allowing for high torque transmission in a small space, comprising a hollow cylinder assembled from at least four shell elements with specific magnetization directions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If conventional magnetic coupling elements are used, then the structure is simple, but the magnetization density is limited and torque transmission is insufficient
Solution Approach 1:
The rotor is segmented into multiple shell elements (at least four) that can be magnetized in different directions. Each shell element contributes to the overall magnetic flux, allowing the system to achieve high torque transmission through cumulative magnetic effects while maintaining a compact structure.
Solution Approach 2:
Different regions of the rotor (shell elements) are magnetized with different magnetization directions (alternately directed or orthogonal) to optimize the magnetic flux distribution. This local differentiation of magnetic properties maximizes the magnetic coupling efficiency and torque transmission within the limited installation space.
2Quantity of substance
If shell elements are magnetized in alternately directed or orthogonal directions, then magnetization density and magnetic flux increase, but manufacturing complexity increases
Solution Approach 1:
The rotor is divided into separate shell elements that can be independently magnetized. This segmentation allows each element to be magnetized in a specific direction using standard magnetization techniques, avoiding the need for complex multi-directional magnetization of a single monolithic structure.
Solution Approach 2:
The shell elements are magnetized in predetermined directions before assembly. This preliminary magnetization action simplifies the overall manufacturing process by decoupling the magnetization step from the assembly step, allowing each component to be prepared independently with standard magnetization equipment.
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 design achieves high magnetic flux and efficient torque transmission, optimizing the use of magnetic materials and enabling high torque in compact magnetic coupling devices and electric motors.
Implementation Method 1
the shell elements are or can be magnetized alternately in oppositely directed or orthogonal magnetization directions to form a magnetic body having at least four magnetic poles
Implementation Method 2
a high magnetic flux can be ensured on the surface of the rotor, which can then be used to achieve a high magnetic frictional connection to a further magnetic element opposite to the rotor
Data Source
AI summary
A rotor for a cardiac support system is disclosed. The rotor is assembled or can be assembled from at least four shell elements to form a hollow cylinder and/or on a shaft, wherein the shell elements are magnetized or can be magnetized alternately in magnetization direction which are oppositely directed or are orthogonal, so as to form a magnetized body having at least four magnetic poles.