AIR CONDITIONER

To solve problems relating to safety or reliability in refrigerant recovery operation of a conventional air conditioner which performs refrigerant recovery operation during stopping or refrigerant leakage.SOLUTION: An air conditioner includes first refrigerant shut-off means, second refrigerant shut-off means, state detecting means for acquiring information for estimating a state of a working refrigerant of an indoor unit, and control means for controlling operation of a device. The state detecting means includes at least two of refrigerant temperature detecting means, refrigerant pressure detecting means, air temperature detecting means, and compressor power detecting means. Timing of closing the second refrigerant shut-off means is determined on the basis of output of the state detecting means when recovering the working refrigerant to the outdoor unit.SELECTED DRAWING: Figure 1 【課題】従来の停止時や冷媒漏洩時に冷媒回収運転を行う空気調和機では、冷媒回収運転の安全性や信頼性に課題があった。【解決手段】 第１冷媒遮断手段と、第２冷媒遮断手段と、室内機の作動冷媒の状態を推定するための情報を取得する状態検知手段と、装置の動作を制御する制御手段を備え、前記状態検知手段は、冷媒温度検知手段、冷媒圧力検知手段、気温検知手段、圧縮機電力検知手段のうち少なくとも２つ以上を備え、作動冷媒を前記室外機に回収する際に前記状態検知手段の出力に基づいて前記第２冷媒遮断手段を閉じる時期を判断する。【選択図】 図１