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

Claim 6:
7. An air conditioning system, comprising:
a centrifugal compressor for compressing refrigerant within the air conditioning system;
an opening sensor for acquiring an inlet opening of the centrifugal compressor; and
a controller configured to perform the following, based on the inlet opening of the centrifugal compressor acquired by the opening sensor:
when the inlet opening of the centrifugal compressor is below a first preset value, shutting down a drive motor of the centrifugal compressor; or
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 the controller is further configured that: when the inlet opening of the centrifugal compressor is not below the first preset value but below a second preset value, the preset order is: 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
when the inlet opening of the centrifugal compressor is not below the second preset value, the preset order is: decreasing the inlet opening of the centrifugal compressor to the second preset value first, and then 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.