| 摘要 |
PROBLEM TO BE SOLVED: To provide a turbo refrigerator capable of properly cooling an electric motor and preventing degradation of efficiency of the refrigerator by optimizing an amount of a refrigerant supplied to the electric motor from a refrigeration cycle as the refrigerant for cooling the electric motor which drives a turbo compressor.SOLUTION: A turbo refrigerator includes a refrigerant supply pipe 5BP as a pipe branched from a condenser 2 side, supplying a refrigerant to an electric motor 11 from the condenser 2 side, a control valve 12 disposed in the refrigerant supply pipe 5BP and controlling a flow rate of the refrigerant flowing in the refrigerant supply pipe 5BP, a temperature sensor T measuring an internal temperature of the electric motor, and a control device 10 controlling an opening of the control valve 12. The control device 10 controls the flow rate of the refrigerant supplied to the electric motor 11 by controlling the opening of the control valve 12 on the basis of the internal temperature of the electric motor 11 measured by the temperature sensor T. |
