Patent ID: 11965515
Assignee: CARRIER CORPORATION
Field: Engines, pumps, turbines (Mechanical engineering)
Classification: CPC F | IPC F

Claim 0:
1. A centrifugal compressor, comprising:
a housing;
a motor assembly disposed in the housing and comprising a motor cavity and a motor shaft located in the motor cavity, the motor shaft having a first end and a second end extending from the motor cavity;
a first impeller assembly located at the first end of the motor shaft and provided with a first labyrinth sealing mechanism for reducing gas leakage from one side of the first impeller assembly;
a second impeller assembly located at the second end of the motor shaft and provided with a second labyrinth sealing mechanism for reducing gas leakage from one side of the second impeller assembly;
a first gas bearing assembly provided between the motor cavity and the first impeller assembly; and
a second gas bearing assembly provided between the motor cavity and the second impeller assembly;
wherein the first labyrinth sealing mechanism is kept in gas communication with the first gas bearing assembly, such that the gas leaking from the side of the first impeller assembly is supplied to the first gas bearing assembly, and the second labyrinth sealing mechanism is kept in gas communication with the second gas bearing assembly, such that the gas leaking from the side of the second impeller assembly is supplied to the second gas bearing assembly;
wherein a first wire mesh is provided between the motor cavity and the first gas bearing assembly for preventing droplets from the motor cavity from entering the first gas bearing assembly, the first wire mesh extending radially outwardly from the motor shaft, and a second wire mesh is provided between the motor cavity and the second gas bearing assembly for preventing droplets from the motor cavity from entering the second gas bearing assembly, the second wire mesh extending radially outwardly from the motor shaft.