Rotor assembly, compressor and air conditioner

The patent replaces the mechanical thrust bearing system with a gas film bearing system. The gas film is generated by the rotation of the rotor itself, which creates a hydrodynamic pressure field that supports the axial load. This substitution eliminates the need for complex thrust bearing arrangements while maintaining the capability to handle axial forces in any direction, thereby reducing device complexity and cost while preserving reliability

The patent utilizes pneumatic principles by employing gas (air) as the bearing medium. The rotating rotor draws gas into the bearing clearance, and the gas pressure generated by the rotation supports the axial load. This pneumatic bearing system replaces the mechanical thrust bearings, simplifying the device structure while maintaining the ability to counteract axial forces in any direction

The patent replaces the mechanical friction-based thrust bearing system with a gas film bearing system. The gas film eliminates direct metal-to-metal contact, thereby eliminating mechanical friction losses and the associated energy waste. The system can still accommodate manufacturing deviations because the gas film adapts to the actual geometry of the rotor and housing, providing load support without requiring precise mechanical tolerances

The patent converts the previously harmful effect of manufacturing deviations into a beneficial feature. Instead of requiring tight tolerances to minimize deviations, the gas film bearing system utilizes the actual geometry (including deviations) to generate the appropriate gas pressure distribution. The manufacturing deviations become part of the bearing clearance that the gas film adapts to, eliminating the need for corrective measures while reducing energy losses