Disk Motor Stator Supporting Ring for Axial Fixation in Compressors
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Solution Overview
Problem
The axial flux disk motor stator experiences unreliable fixing due to a small contact area with the compressor shell and significant axial electromagnetic attraction, leading to potential misalignment and performance issues.
Innovation Solution
A stator design featuring a ring-shaped stator core with laminated magnetically conductive materials, including a stator yoke and supporting ring, where the stator yoke is fixedly connected to the stator supporting ring using bolts or fins, and the supporting ring is fitted over the stator yoke via interference or clearance fit, providing axial fixation and enhanced structural integrity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the stator is installed directly in the compressor shell, then the structure is simple, but the contact area is small and fixing is unreliable
Solution Approach 1:
A stator supporting ring is introduced as an intermediary component between the stator and the compressor shell. This supporting ring increases the contact area and provides reliable fixation, solving the problem of insufficient contact area when the stator is directly installed in the compressor shell.
2Ease of operation
If the stator is directly installed in the compressor shell, then the installation is simple, but the axial electromagnetic attraction causes misalignment
Solution Approach 1:
The stator supporting ring serves as a mediator that provides a stable mounting base for the stator. It ensures proper alignment of the stator in the axial direction, preventing misalignment caused by strong axial electromagnetic attraction while maintaining simple installation procedures.
3Reliability
If the stator supporting ring uses interference fit, then the fixation is reliable, but the manufacturing precision requirement increases
Solution Approach 1:
The connection between the stator supporting ring and the compressor shell is divided into multiple segments (multiple mounting holes distributed around the circumference). This segmentation allows the total fixation force to be distributed across multiple points, reducing the precision requirement for each individual fit while maintaining overall fixation reliability.
4Strength
If the stator core uses laminated structure, then the magnetic performance is improved, but the device complexity increases
Solution Approach 1:
The stator core adopts a laminated structure composed of multiple thin magnetic sheets stacked together. This composite structure improves magnetic performance by reducing eddy current losses while maintaining a relatively simple overall stator design, balancing magnetic efficiency with structural simplicity.
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 ensures reliable axial fixation of the disk motor stator within the compressor shell, reducing the risk of misalignment and electromagnetic attraction issues, thereby improving the motor's stability and performance.
Implementation Method 1
the stator supporting ring is fitted over the stator yoke via interference or clearance fit
Implementation Method 2
a ring-shaped stator core including a plurality of ring-shaped or arc-shaped layers of magnetically conductive materials laminated on each other in a radial direction
Implementation Method 3
there is a large axial electromagnetic attraction between the stator and the rotor
Data Source
AI summary
A stator for a disk motor, a stator supporting ring and a compressor belong to the field of refrigeration technology. The stator includes a ring-shaped stator core including a plurality of ring-shaped or arc-shaped layers of magnetically conductive materials laminated on each other in a radial direction. In addition, the stator supporting ring is configured to fix a stator for a disk motor and has an inner wall fitted over a stator yoke of the stator. The compressor includes: a shell; a compression unit fixed within the shell; and a disk motor coupled with the compression unit. The disk motor includes: a rotor, and at least one stator fixed to the shell by the stator supporting ring.