Patent ID: 7878010
Filing Date: 2011-02-01
Classification: F25B

Abstract:
1. An air conditioner, comprising: a refrigerant circuit configured to interconnect a compressor, a heat source side heat exchanger, an expansion mechanism, and a utilization side heat exchanger; an operation controlling section configured to perform a refrigerant quantity judging operation to control constituent equipment to reach a predetermined target control value; a stability judging section configured to judge whether or not the refrigerant quantity judging operation has stabilized; a refrigerant quantity judging section configured to judge adequacy of refrigerant quantity in the refrigerant circuit by using an operation state quantity of constituent equipment or refrigerant flowing in the refrigerant circuit when it is judged that the refrigerant quantity judging operation has stabilized; and a condition changing section configured to change the target control value in the refrigerant quantity judging operation when it is judged that the refrigerant quantity judging operation has not stabilized.