AIR CONDITIONING SYSTEM

PROBLEM TO BE SOLVED: To provide an air conditioning system in which a flow passage of a refrigerant sent out from a plurality of compressors is optimized.SOLUTION: Air-conditioned air which has undergone heat exchange with a refrigerant flowing in an evaporator H2 is supplied to an air-conditioning target space. One of refrigerant circulation states is a first cooling circulation state where the refrigerant is made to flow through a first expansion valve V4 and the evaporator H2 sequentially, and then is divided, one of the divided refrigerants is made to flow through a first compressor CP1 and a first condenser H1 sequentially, and then is returned to the first expansion valve V4, and the other of the divided refrigerants is made to flow through a second compressor CP2 and a second condenser H1 sequentially, and then is returned to the first expansion valve V4. The other one of the refrigerant circulation states is a second cooling circulation state where a refrigerant sent out from the first compressor CP1 is made to flow through the first condenser H1, a heat exchanger H4, the first expansion valve V4 and the evaporator H2 sequentially, and then is returned to the first compressor CP1 and a refrigerant sent out from the second compressor CP2 is made to flow through the second condenser H1, a second expansion valve V3 and the heat exchanger H4 sequentially, and then is returned to the second compressor CP2.SELECTED DRAWING: Figure 1 【課題】複数の圧縮機から送出される冷媒の流路が最適化された空気調和システムの提供【解決手段】蒸発器Ｈ２を通流する冷媒と熱交換した空調用空気を空調対象空間へ供給し、冷媒の循環状態の一つは、冷媒が第１膨張弁Ｖ４と蒸発器Ｈ２とを順に通流した後で分流され、分流された冷媒の一方が第１圧縮機ＣＰ１と第１凝縮器Ｈ１とを順に通流した後で第１膨張弁Ｖ４に帰還し、及び、分流された冷媒の他方が第２圧縮機ＣＰ２と第２凝縮器Ｈ１とを順に通流した後で第１膨張弁Ｖ４に帰還する第１冷房循環状態であり、冷媒の循環状態の別の一つは、第１圧縮機ＣＰ１から送出される冷媒が、第１凝縮器Ｈ１と熱交換器Ｈ４と第１膨張弁Ｖ４と蒸発器Ｈ２とを順に通流した後で第１圧縮機ＣＰ１に帰還し、及び、第２圧縮機ＣＰ２から送出される冷媒が、第２凝縮器Ｈ１と第２膨張弁Ｖ３と熱交換器Ｈ４とを順に通流した後で第２圧縮機ＣＰ２に帰還する第２冷房循環状態である。【選択図】図１