Patent ID: 8474280

Claim:
A control method of a compressor in a refrigerating storage cabinet that compresses a refrigerant using the compressor that is driven by an inverter motor, supplies the refrigerant to a cooler through a condenser and a throttling device, and cools an inside of a storage compartment by means of cold air that is generated by the cooler, the refrigerating storage cabinet comprising: target temperature setting means for setting a target temperature for inside the storage compartment; and a temperature sensor that detects an internal temperature inside the storage compartment, said control method comprising: calculating and integrating a deviation between the target temperature that is set by the target temperature setting means and an internal temperature that is detected by the temperature sensor for each predetermined time period; and increasing a rotational speed of the inverter motor when the integrated value is greater than an upper limit value, or reducing the rotational speed of the inverter motor when the integrated value is less than a lower limit value.