Air conditioning device

An air conditioning device, comprising:

• an outdoor unit that includes
• a compressor,
• a plurality of outdoor heat exchangers,
• a plurality of flow path switching valves that are respectively provided to the plurality of outdoor heat exchangers and switch connection of one refrigerant inlet/outlet of each outdoor heat exchanger to a refrigerant discharge port or a refrigerant suction port of the compressor, and
• an outdoor fan that blows air to the plurality of outdoor heat exchangers;
• at least one indoor unit that is connected to the outdoor unit via a refrigerant pipe;
• and
• a control device that controls a rotation speed of the outdoor fan, wherein
• the control device
• determines whether to increase the number of outdoor heat exchangers used in accordance with a requested air conditioning capacity, and determines, when determining that the number of outdoor heat exchangers used is to be increased, the rotation speed of the outdoor fan such that a heat exchange amount of the outdoor heat exchanger after an increase in the number of outdoor heat exchangers used is equal to or lower than the heat exchange amount of the outdoor heat exchanger before the increase in the number of outdoor heat exchangers used, and
• determines whether to decrease the number of outdoor heat exchangers used in accordance with a requested air conditioning capacity, and determines, when determining that the number of outdoor heat exchangers used is to be decreased, the rotation speed of the outdoor fan such that a heat exchange amount of the outdoor heat exchanger after a decrease in the number of outdoor heat exchangers used is equal to or larger than the heat exchange amount of the outdoor heat exchanger before the decrease in the number of outdoor heat exchangers used.