Patent ID: 9303908
Filing Date: 2016-04-05
CPC Classification: F25B

Claim Text:
1. An air conditioner comprising: a refrigerant circuit configured to interconnect a heat source unit and a utilization unit; a transmission line configured to exchange a signal between the heat source unit and the utilization unit; an information obtaining section configured to obtain information on the utilization unit connected to the heat source unit via the transmission line; an operation controlling section configured to perform a refrigerant quantity judging operation; a refrigerant quantity judging section configured to judge adequacy of a refrigerant quantity in the refrigerant circuit by using a condition setting section configured to set a condition for the refrigerant quantity judging operation according to the information on the utilization unit obtained by the information obtaining section, the condition setting section setting at least one relational expression between the refrigerant quantity in the refrigerant circuit and the operation state quantity as the condition for the refrigerant quantity judging operation, according to a model of the utilization unit obtained by the information obtaining section; and a refrigerant quantity calculating section configured to calculate the refrigerant quantity in the refrigerant circuit from the operation state quantity in the refrigerant quantity judging operation by using the at least one relational expression, and the refrigerant quantity judging section judging the adequacy of the refrigerant quantity in the refrigerant circuit by using the refrigerant quantity in the refrigerant circuit calculated by the refrigerant quantity calculating section.