Maglev Air Compressor Axial Force Balancing
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Solution Overview
Problem
Traditional maglev air compressors experience axial force imbalance leading to uncertain rotor movement, necessitating a thrust disk for support, which increases the length of the rotating shaft and requires additional space.
Innovation Solution
The maglev air compressor replaces the thrust disk with first and second thrust bearing pieces that generate axial magnetic forces to counteract the axial force on the rotor, utilizing a control module to manage these forces and eliminate the need for a thrust disk, thereby shortening the rotating shaft and improving critical rotation speed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If a thrust disk is added to counteract axial force and prevent rotor spindle movement, then rotor stability is improved, but the length of the rotating shaft increases and additional space is required
Solution Approach 1:
The patent replaces the mechanical thrust disk structure with a magnetic field-based axial force balancing system. The control module generates controlled magnetic forces that counteract the axial force on the rotor, eliminating the need for physical thrust disks and thereby shortening the rotating shaft length while maintaining rotor stability.
Solution Approach 2:
The patent changes the method of axial force counteraction from mechanical contact (thrust disk) to magnetic field interaction. By controlling the magnetic field parameters through the control module, the system achieves axial force balancing without the physical space requirements of mechanical thrust disks, thus reducing rotating shaft length.
2Stability of the object's composition
If a thrust disk is added to counteract axial force, then rotor axial movement is prevented, but device complexity increases due to additional components and space requirements
Solution Approach 1:
The patent substitutes the mechanical thrust disk system with an electromagnetic control system. The control module generates and adjusts magnetic fields to counteract axial forces, replacing complex mechanical components with a more integrated electromagnetic solution that reduces overall device complexity.
Solution Approach 2:
The control module serves multiple functions: it controls the magnetic levitation forces for radial suspension and also generates the axial magnetic forces for axial force balancing. This multi-functionality eliminates the need for separate thrust disk components, simplifying the overall device structure.
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 design effectively prevents rotor axial movement, reduces the overall length of the compressor, enhances rotor rigidity, and improves the critical rotation speed while eliminating the need for additional heat dissipation apparatus, thus enhancing the compressor's performance and efficiency.
Implementation Method 1
a first thrust bearing piece generating a first axial magnetic force to the first impeller assembly, and, a second thrust bearing piece generating a second axial magnetic force to the second impeller assembly
Implementation Method 2
a rotor and a motor are suspended without contact through magnetic force. When current passes through the coils, magnetic field is generated, the magnetic field interacts with the magnet on the rotor, generating an upward levitation force
Data Source
AI summary
The present application discloses a maglev air compressor, which includes a compressor housing, a motor stator, a rotor, a first impeller assembly and a second impeller assembly subjectable to an axial magnetic force and a control module. The compressor housing, the motor stator and the rotor are sleeved sequentially, both ends of the rotor are rotatably connected to an inside of the compressor housing through a maglev bearing group, the first impeller assembly and the second impeller assembly are fixedly oppositely installed on the both ends of the rotor. The maglev bearing group includes: a first thrust bearing piece generating a first axial magnetic force to the first impeller assembly, and, a second thrust bearing piece generating a second axial magnetic force to the second impeller assembly.