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    • 9. 发明专利
    • Air conditioning apparatus
    • JP4726664B2
    • 2011-07-20
    • JP2006078505
    • 2006-03-22
    • 三菱電機株式会社
    • 和彦 河合
    • F24F11/02F25B1/00
    • PROBLEM TO BE SOLVED: To provide an air conditioner, quickly recovering the air conditioning state before power failure when the power supply is restarted after the occurrence of power failure. SOLUTION: This air conditioner includes: a refrigerant circuit formed by sequentially piping and connecting at least one variable displacement compressor 21; a heat source side heat exchanger 22; an expansion valve 11; and a utilization side heat exchanger 12 like a circle. The air conditioner further includes: an operating condition detecting means 5 for detecting the operating conditions of predetermined units including at least the compressor 21 and the expansion valve 11 held by the refrigerant circuit 10; an operating condition storage means 6 storing the operating condition detected by the operating condition detecting means 5; a power supply and failure detecting means 8 for detecting the power supply and the power failure of a power supply 7 supplied to the refrigerant circuit 10; and a predetermined unit control means 9 for setting the operating condition before power failure stored in the operating condition storage means 5 to a control target value and controlling the predetermined unit when the occurrence of power failure and the subsequent restart of power supply are detected by the power supply and failure detecting means 8. COPYRIGHT: (C)2008,JPO&INPIT
    • 10. 发明专利
    • Air conditioner
    • JP4039358B2
    • 2008-01-30
    • JP2003389511
    • 2003-11-19
    • 三菱電機株式会社
    • 央平 加藤多佳志 岡崎和彦 河合康文 畑村
    • F24F11/02F25B1/00
    • PROBLEM TO BE SOLVED: To carry out operation so as to prevent dew formation of sucked gas in an evaporator, to enhance efficiency, and to enhance reliability. SOLUTION: The air conditioner is provided with a compressor 1, a condenser 2, a pressure reducing device 3, the evaporator 4, a refrigerant piping connecting these to circulate a refrigerant, a fan 22 sending gas to the evaporator 4, and an overheating gasification means 5 for sending the refrigerant flowing out from the evaporator 4 as overheated gas into the compressor 1. It has an operation mode for setting a pressure reduction amount of the pressure reducing device 3, an air capacity of the fan 22, or a frequency of the compressor 1 such that blowing out is carried out so that a surface temperature of the refrigerant piping in the evaporator is a dew point temperature or more of the gas sucked into the evaporator 4 to prevent dew formation, and a refrigerant state of an evaporator 4 outlet is a humid state or a state near saturated gas. The refrigerant is sent into a suction side of the compressor 1 in an overheated gas state by the overheating gasification means 5 to prevent a liquid back flow to the compressor 1. COPYRIGHT: (C)2005,JPO&NCIPI