| 摘要 |
PROBLEM TO BE SOLVED: To provide an air conditioner capable of ensuring reliability.SOLUTION: An air conditioner includes: a discharge tube 55 that is a part of a refrigerant pipe and that is connected to a discharge side of a compressor 21; and a control unit 61 controlling a compressor frequency of the compressor 21. An outdoor temperature determination value for determining whether an outdoor temperature Ts falls in a preset low-temperature range, and a compressor outer hull temperature determination value for determining whether a compressor outer hull temperature T0 of the compressor 21 falls in a preset high-temperature range are set to the control unit 61. If the outdoor temperature Ts is equal to or lower than the outdoor temperature determination value and the compressor outer hull temperature T0 is equal to or higher than the compressor outer hull temperature determination value, the control unit 61 obtains a target lower limit value Hz1 of the compressor frequency on the basis of a first refrigerant flow volume V0 at which refrigerant flows in the discharge tube 55 and a second refrigerant flow volume V1 set based on a discharge tube temperature target value T1 that is a target value of a temperature of the discharge tube 55. Furthermore, the control unit 61 sets a preset lower limit value Hz0 of the compressor frequency to the target lower limit value Hz1 of the compressor frequency. |
