AIR CONDITIONER

摘要

An outdoor unit control unit 200 has a defrosting operation condition table 300a that defines a defrosting operation interval time Tm in accordance with a total sum of rated capacity of indoor units 5a to 5c and a refrigerant pipe length as lengths of a liquid pipe 8 and a gas pipe 9. The outdoor unit control unit 200 uses the total sum of the rated capacity of indoor units 5a to 5c input by using an installation information input unit 250 and refers to the defrosting operation condition table 300a, so as to determine the defrosting operation interval time Tm. Then, the outdoor unit control unit 200 forcibly performs a defrosting operation when the defrosting operation interval time Tm elapses without establishment of a defrosting operation start condition since the last defrosting operation is terminated.

主权项

1. An air conditioner comprising:
at least one outdoor unit having a compressor, a flow passage switching unit, an outdoor heat exchanger, and an outdoor unit controller; at least one indoor unit having an indoor heat exchanger; and at least one liquid pipe and at least one gas pipe for coupling the outdoor unit and the indoor unit, wherein the outdoor unit controller performs a defrosting operation when a defrosting operation interval time as a predetermined time elapses since the last defrosting operation is terminated, and plural times are set as the defrosting operation interval time in accordance with a capacity ratio that is a value obtained by dividing a total sum of rated capacity of the indoor unit by a total sum of rated capacity of the outdoor unit.