Magnetic Thrust Bearing Axial Lateral Segmentation
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Solution Overview
Problem
Existing magnetic thrust bearings face limitations in optimizing load capacity and achieving frictionless rotational movement due to fixed magnetic configurations, which restrict their efficiency in applications like wind turbines.
Innovation Solution
A unique magnetic thrust bearing design utilizing permanently oriented magnets with axial and lateral separation, allowing for adjustable parameters such as magnet size, number of layers, and gap distance to enhance load capacity and enable 360° frictionless rotation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If conventional co-axial permanent-magnet rings are used with fixed configurations, then the bearing structure is simple, but the load capacity cannot be optimized and frictionless rotation is limited
Solution Approach 1:
The bearing is divided into multiple magnetic layers with axial and lateral separation. Each layer contains magnets oriented in specific directions, creating segmented magnetic zones that independently contribute to load capacity while maintaining structural simplicity through modular arrangement.
Solution Approach 2:
The patent transitions from conventional two-dimensional co-axial magnet arrangements to a three-dimensional configuration with axial and lateral separation. This adds a lateral dimension to the magnetic field distribution, enabling enhanced load capacity through multi-directional magnetic force vectors without significantly increasing overall device complexity.
2Force
If magnet sizes and strengths are increased to improve load capacity, then the bearing can support higher loads, but the device size and manufacturing complexity increase
Solution Approach 1:
Instead of using fewer large magnets, the bearing employs multiple smaller magnets arranged in segmented layers. This segmentation allows standard manufacturing processes to be used for each magnet while achieving high load capacity through the cumulative effect of multiple magnetic units, simplifying manufacturing compared to producing fewer oversized custom magnets.
Solution Approach 2:
The patent optimizes load capacity by adjusting parameters such as the number of magnetic layers, axial and lateral gap distances, and magnet orientations rather than simply increasing individual magnet size. This parametric approach allows load capacity optimization while maintaining manufacturability through standard component dimensions.
3Loss of energy
If axial and lateral separation is introduced to optimize magnetic patterns, then frictionless rotation is enhanced, but the device complexity increases
Solution Approach 1:
The magnetic system is segmented into multiple layers with controlled axial and lateral separations. This segmentation creates distinct magnetic interaction zones that minimize contact and friction between moving parts, enabling frictionless rotation. The modular segmented structure achieves this complex magnetic pattern without requiring a completely complex device architecture.
Solution Approach 2:
The patent replaces traditional mechanical contact-based thrust bearing mechanisms with a magnetic field-based system. By using axial and lateral magnetic separation, the design eliminates physical contact between bearing surfaces, substituting mechanical friction with magnetic repulsion and attraction forces, thereby achieving frictionless rotation.
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 improved load capacity and frictionless rotational movement by leveraging adjustable magnetic configurations, optimizing the bearing's performance in applications like wind turbines by utilizing both attractive and repelling forces effectively.
Implementation Method 1
a magnetic thrust bearing that uses permanent magnets uniquely oriented to provide highly efficient rotational movement of a first part relative to a second part about an axis
Implementation Method 2
a second set of laterally spaced magnets on the second part, with the laterally spaced magnets of the second set oriented perpendicular to the axis, such that the laterally spaced magnets of the first set repel the laterally spaced magnets of the second set
Data Source
AI summary
A magnetic thrust bearing for use in a device for relatively free rotational movement of a first part relative to a second part includes axial and laterally spaced magnets. Each magnet has a magnetic field of force with opposing poles and a transition section which converges to a transition line. Axial magnets are spaced on an axis of the first part of the device and lateral magnets are arranged on the second part of the device. The lateral magnets operating in units, having paired lateral magnets positioned on opposite sides of the axis with each of the paired magnets having an equal length and equal gap or space from the axis. Axial magnets have an alternating polar orientation such that the nearest magnetic poles of adjacent axial magnets are repelling, and the distance between transition lines of the axial magnets is substantially equal to the length of the lateral magnets. Accordingly, the magnetic field of force of each lateral magnetic unit is perpendicular and attracting to the repelling fields of force between adjacent axial magnets for lateral displacement of the first part relative to the second part by a fixed gap, so that, with this arrangement, the permanent-magnet bearing enables non-contact, relative motion between the two parts of the device using both attractive and repelling forces generated by magnets.