| 摘要 |
PROBLEM TO BE SOLVED: To provide an air conditioner capable of accurately controlling a degree of superheat. SOLUTION: This air conditioner comprises a liquid pipe sensor for detecting a liquid refrigerant temperature TOPL in a liquid pipe connected to an outdoor heat exchanger, a discharge temperature sensor for detecting a refrigerant discharge temperature Td of a compressor, and an electronic expansion valve for throttling a refrigerant circulating between the outdoor heat exchanger and an indoor heat exchanger. Further, the air conditioner comprises an expansion valve control device to which the detection output of the liquid pipe sensor and the discharge temperature sensor are inputted for controlling an opening of the electronic expansion valve on the basis of input signals from these sensors, and which performs the control to increase the opening of the electronic expansion valve when Td-TOPL is more than a predetermined upper limit threshold value, and to decrease the opening of the electronic expansion valve when Td-TOPL is smaller than a predetermined lower limit threshold value.
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