| 摘要 |
An air conditioner (1) capable of continuously performing a cooling operation by preventing indoor heat exchangers (23, 24, 25) from being frozen even when an outside air temperature is low, comprising an air-cooled outdoor unit (2) having a compressor and an outdoor heat exchanger, the plurality of indoor units (3, 4, 5) connected to the outdoor unit parallel with each other and having the indoor heat exchangers (23, 24, 25), and a gas side refrigerant pipe for connecting the indoor heat exchanger to the compressor, wherein the indoor heat exchangers (23, 24, 25) are connected to the compressor (11) through the gas side refrigerant pipe (17), and a pressure control device (6) formed in an integral unit having a pressure detection means (61), an electric expansion valve (62), and an opening adjusting means (63) and having a function to regulate a pressure in the indoor heat exchanger (23) to a pressure higher than pressures in the indoor heat exchangers (24, 25) of the other indoor units (4, 5)is fitted into the gas side refrigerant pipe (17).
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