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    • 91. 发明公开
    • FREEZING DEVICE
    • KÜHLGERÄT
    • EP2096377A1
    • 2009-09-02
    • EP07850386.9
    • 2007-12-11
    • Daikin Industries, Ltd.
    • UENO, Yoshio
    • F25B1/00F24F11/02
    • F25B9/008F25B2309/061F25B2500/19F25B2600/17F25B2600/19F25B2700/2102
    • High-efficiency operation can be rapidly achieved in a refrigeration apparatus that performs a refrigeration cycle operation in which the high-pressure side attains a pressure that exceeds the critical pressure of the refrigerant. The refrigeration apparatus is a refrigeration apparatus for performing a refrigeration cycle operation in which a high-pressure side attains a pressure that exceeds the critical pressure of a refrigerant, the refrigeration apparatus having a refrigerant circuit that includes a compressor, a cooler, an expansion mechanism, and a heater. A constituent component of the refrigeration apparatus is controlled so that a quasi-subcooling degree, which is the temperature difference between a quasi-condensation temperature and a cooler outlet refrigerant temperature, is within a predetermined temperature range, the quasi-condensation temperature being the refrigerant temperature at which the isobaric specific heat capacity of the refrigerant at the refrigerant pressure on the high-pressure side of the refrigeration cycle is at a maximum.
    • 在执行高压侧达到超过制冷剂的临界压力的压力的制冷循环运转的制冷装置中,可以快速实现高效率运转。 制冷装置是用于进行高压侧达到超过制冷剂的临界压力的压力的制冷循环运转的制冷装置,该制冷装置具有制冷剂回路,该制冷剂回路包括压缩机,冷却器,膨胀机构 ,和加热器。 控制制冷装置的构成成分,使作为准冷凝温度和冷却器出口制冷剂温度之间的温度差的准过冷度在预定的温度范围内,准冷凝温度为制冷剂 在制冷循环的高压侧的制冷剂压力下的制冷剂的等压比热容量为最大的温度。
    • 92. 发明公开
    • REFRIGERATION DEVICE
    • KÜHLVORRICHTUNG
    • EP2068096A1
    • 2009-06-10
    • EP07806911.9
    • 2007-09-07
    • Daikin Industries, Ltd.
    • KASAHARA, ShinichiKURIHARA, ToshiyukiFUJIMOTO, ShuujiYAMAGUCHI, TakahiroYOSHIMI, AtsushiUENO, Yoshio
    • F25B1/00
    • F25B13/00F25B9/008F25B40/00F25B2309/061F25B2313/0233F25B2313/0272F25B2313/02741F25B2341/0662F25B2400/13F25B2400/23F25B2600/2509F25B2600/2513F25B2700/19F25B2700/1931F25B2700/2102F25B2700/21151
    • An object of the present invention is to make it possible to impart an adequate degree of subcooling to the refrigerant that has passed through the first expansion mechanism, and to maintain the proper degree of superheating of the refrigerant sucked into the compressor in a refrigerant circuit that is provided with a two-stage expansion mechanism. The refrigeration device (1) of the present invention is provided with a compression mechanism (11), a radiator (14), a first expansion mechanism (16), a second expansion mechanism (20), an evaporator (31), a first internal heat exchanger (15), a branch pipe (4), a third expansion mechanism (19), and a second internal heat exchanger (18). The first internal heat exchanger causes heat to be exchanged between refrigerant that flows from the exit side of the radiator to the inflow side of the first expansion mechanism, and refrigerant that flows from the exit side of the evaporator to the refrigerant inflow side of the compression mechanism. The branch pipe branches from a third refrigerant pipe for connecting the exit side of the radiator and the refrigerant inflow side of the second expansion mechanism, and merges with the second refrigerant pipe. A third expansion mechanism is provided to the branch pipe. The second internal heat exchanger causes heat to be exchanged between refrigerant that flows out from the first expansion mechanism, and refrigerant that flows out from the third expansion mechanism.
    • 本发明的目的在于,能够使已经通过第一膨胀机构的制冷剂具有足够的过冷度,并且将吸入压缩机的制冷剂的适当过热度保持在制冷剂回路中, 设置有两级膨胀机构。 本发明的制冷装置(1)具备压缩机构(11),散热器(14),第一膨胀机构(16),第二膨胀机构(20),蒸发器(31) 内部热交换器(15),分支管(4),第三膨胀机构(19)和第二内部热交换器(18)。 第一内部热交换器在从散热器的出口侧流到第一膨胀机构的流入侧的制冷剂之间进行热交换,从蒸发器的出口侧流向压缩机的制冷剂流入侧的制冷剂 机制。 分支管从用于连接散热器的出口侧和第二膨胀机构的制冷剂流入侧的第三制冷剂管分支,并与第二制冷剂管合并。 向分支管提供第三膨胀机构。 第二内部热交换器使得从第一膨胀机构流出的制冷剂与从第三膨胀机构流出的制冷剂之间进行热交换。