| 摘要 |
PROBLEM TO BE SOLVED: To provide an air conditioner capable of controlling an oil return amount with high accuracy.SOLUTION: An air conditioner 100 is provided with an expansion valve 12 in an oil return circuit 10 for returning oil from an oil separator 6 to a compressor 1, and includes: a pressure loss member 13 arranged on the downstream side of the expansion valve 12 in the oil return circuit 10; and a controller 20 for controlling an opening of the expansion valve 12 on the basis of the differential pressure between the pressure between the expansion valve 12 and the pressure loss member 13 and the discharge pressure of the compressor 1, and the rotation frequency of the compressor 1. |
