Abstract: The high-speed operation of a rolling rotor compressor with a high-thickness motor has a significant impact on the pump structure. To improve its reliability by adopting a double-support structure, in order to study the factors affecting the reliability of the double-support structure and make the structure mass-producible, simulation methods such as shaft system lubrication and fluid as well as experiments are used to confirm the relevant laws of the sliding split-type double-support structure on the reliability of high-thickness and high-speed compressors, and corresponding improvement measures are proposed. The results show that by enlarging the motor bearing clearance, miniaturizing the double-support structure, adding a shaft sleeve to the motor bearing, and optimizing the internal flow field, the reliable operation and implementability of high-speed and high-thickness compressors can be satisfied.

Key words: Compressor, Double-support structure, Bushing