Patent ID: 8342810

Claim:
A start-up control device for an electric scroll compressor including a motor and a scroll compression unit driven with the motor and used to compress a refrigerant, comprising: a detector for detecting temperature and pressure of the refrigerant existing in the compression unit prior to start-up of the compressor, and outputting a detection result; and a controller for controlling driving of the motor at start-up of the compressor, the controller including a determination section for determining whether or not liquid refrigerant exists in the compression unit on the basis of the detection result of the detector, and a executing section for executing the driving of the motor according to a start-up control process selected on the basis of the determination result of the determination section, wherein: the start-up control process includes: a normal start-up mode for being selected when liquid refrigerant does not exist in the compression unit; and a liquid-discharge mode for being selected when there is liquid refrigerant in the compression unit and regulating a rotational speed of the motor to be non-zero and lower than in the normal start-up mode.