ABSORPTION-TYPE REFRIGERATOR

To provide an absorption-type refrigerator which can prevent freezing during a long-period stop and can replace a refrigerant and an absorption liquid in a shorter time at re-activation.SOLUTION: An absorption-type refrigerator 1 comprises first branch piping L9, a solution selector valve V1 and a diluted solution pump P2. A control device 30 mixes a refrigerant in an evaporator 13 with an absorption liquid by opening the solution selector valve V1 after a stop of operation and operating the diluted solution pump P2. The absorption-type refrigerator 1 further comprises second branch piping L10 for supplying liquid in the evaporator 13 into an absorber 14, a refrigerant selector valve V2 for opening and closing the second branch piping L10, and a refrigerant pump P3 which generates power for supplying the liquid in the evaporator 13 into the absorber 14. After a stop of operation, the control device 30 opens the refrigerant selector valve V2 and operates the refrigerant pump P3 before the opening of the solution selector valve V1 and the operation of the diluted solution pump P2.SELECTED DRAWING: Figure 1 【課題】長期停止中における凍結を防止すると共に、再起動時により短い時間で冷媒と吸収液とを置換することができる吸収式冷凍機を提供する。【解決手段】吸収式冷凍機１は、第１分岐配管Ｌ９と、溶液切替弁Ｖ１と、稀溶液ポンプＰ２とを備え、制御装置３０が、運転停止後において溶液切替弁Ｖ１を開き稀溶液ポンプＰ２を運転させることで、蒸発器１３内の冷媒を吸収液と混合させる。さらに、吸収式冷凍機１は、蒸発器１３内の液体を吸収器１４内に供給するための第２分岐配管Ｌ１０と、第２分岐配管Ｌ１０を開閉する冷媒切替弁Ｖ２と、蒸発器１３内の液体を吸収器１４内に供給する動力を発生させる冷媒ポンプＰ３とを備え、制御装置３０は、運転停止後において、溶液切替弁Ｖ１を開き稀溶液ポンプＰ２を運転させるのに先立って、冷媒切替弁Ｖ２を開き冷媒ポンプＰ３を運転させる。【選択図】図１