Linear motor, cooling equipment compressor and cooling equipment
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Solution Overview
Problem
Linear motors with existing topologies face challenges in achieving sufficient magnetic flow variation while maintaining reduced size and cost, as increasing the number of magnets increases manufacturing costs and size, and current designs with single magnets have low magnetic flow variation.
Innovation Solution
Incorporating a high magnetic permeability element, such as ferromagnetic segments made of iron, adjacent to and cooperative with the magnetic body within the air gap area, which moves in conjunction with the magnetic body, enhancing magnetic flow variation without the need for additional magnets.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If multiple magnetic bodies are used in the air gap to increase magnetic flow variation, then the magnetic flow variation increases, but the manufacturing cost and device size increase
Solution Approach 1:
A ferromagnetic element is introduced as an intermediary component in the air gap between the stator and magnetic body. This element concentrates and guides the magnetic flux, effectively increasing the magnetic flow variation without requiring multiple magnetic bodies. The ferromagnetic element acts as a flux concentrator that mediates the magnetic interaction between the single magnetic body and stator, achieving enhanced motor performance while maintaining simplicity and cost-effectiveness
2Device complexity
If the size of the motor is reduced to lower manufacturing costs, then the manufacturing cost decreases, but the magnetic flow variation generated becomes insufficient
Solution Approach 1:
The ferromagnetic element is strategically positioned in specific regions of the air gap where magnetic flux concentration is most beneficial. By optimizing the local magnetic properties in the air gap region through the ferromagnetic element, the motor achieves enhanced magnetic flow variation despite the overall compact size. This localized enhancement allows the motor to maintain high performance while keeping the overall device compact and cost-effective
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 increases magnetic flow variation similar to that achieved with multiple magnets, while maintaining a compact design and reducing costs by utilizing a single magnetic body, thus optimizing performance and cost-effectiveness.
Implementation Method 1
a high magnetic permeability element disposed in the air gap area and adjacently to the magnetic body
Implementation Method 2
a coil (3) associated to the stator (2), said coil (3) being electrically powered so as to produce a magnetic field
Data Source
Figure 1
Figure 2(a)~2(c)
Figure 3
AI summary
There is described a linear motor (1) comprising: a stator (2) defining at least an air gap area (10), at least one coil (3) associated to the stator (2), wherein a magnetic flow moves over at least one portion of the stator (2) and over a portion of the air gap area (10), wherein the linear motor (1) comprises a magnetic body (5) disposed in the air gap area (10), wherein a movement parameter of the magnetic body (5) in the air gap area (10) causes movement of a piston (7) of the linear motor (1), wherein the linear motor (1) further comprises: at least one magnetically permeable element (20, 20A, 20B) disposed in the air gap area (10) and adjacently to the magnetic body (5), wherein the movement parameter of the magnetic body (5) is cooperative to the movement parameter of the magnetically permeable element (20, 20A, 20B).