AIR CONDITIONER, METHOD FOR CONTROLLING APERTURE OF EXPANSION VALVE, AND COMPUTER READABLE STORAGE MEDIUM FOR STORING PROGRAM FOR CONTROLLING APERTURE OF EXPANSION VALVE

摘要

An air conditioner includes: a compressor (5) for compressing a refrigerant; an expansion valve (2) for adjusting the flow of the refrigerant; a first temperature sensor (7) for detecting a discharge temperature of the compressor (5); and a second temperature sensor (6 or 8) for detecting a temperature of a condenser (1 or 3). A discharge temperature difference is calculated that is a difference between the discharge temperature detected by the first temperature sensor (7) and the temperature of an outdoor heat exchanger (1) or an indoor heat exchanger (3) functioning as the condenser that is detected by the second temperature sensor (6 or 8). The opening of the expansion valve is set based on the calculated discharge temperature difference and a target discharge temperature difference that is set so that a target degree of superheat is obtained.