Patent ID: 11879468
Assignee: CARRIER CORPORATION
Field: Engines, pumps, turbines (Mechanical engineering)
Classification: CPC F  Y | IPC F

Claim 0:
1. A control method for a centrifugal compressor, comprising:
S100, when an inlet opening of the centrifugal compressor is below a first preset value, shutting down a drive motor of the centrifugal compressor; or
S200, when the inlet opening of the centrifugal compressor is not below the first preset value, performing the following operations in a preset order: decreasing the inlet opening of the centrifugal compressor, and increasing a rotational speed of the centrifugal compressor;
wherein step S200 comprises:
S210, when the inlet opening of the centrifugal compressor is not below the first preset value but below a second preset value, the preset order being: increasing the rotational speed of the centrifugal compressor, and decreasing the inlet opening of the centrifugal compressor to the first preset value subsequently or simultaneously; or
S220, when the inlet opening of the centrifugal compressor is not below the second preset value, the preset order being: decreasing the inlet opening of the centrifugal compressor to the second preset value first, and then performing S210.