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    • 10. 发明授权
    • Refrigerator
    • 冰箱
    • US07770406B2
    • 2010-08-10
    • US10580835
    • 2004-11-22
    • Takahiro YoshiokaHidetake HayashiMinoru Temmyo
    • Takahiro YoshiokaHidetake HayashiMinoru Temmyo
    • F25B17/02F25B41/00
    • F25D29/00F25B1/10F25B5/02F25B2400/052F25B2400/054F25B2500/31F25B2600/112F25B2600/2511F25D11/022F25D2400/04Y02B30/743Y02B40/32
    • A high-pressure side discharge port of a two-stage compressor (12A) and a condenser (14A) are connected, condenser (14A) and a PMV (15A) are connected, a refrigerating side exit of PMV (15A) is connected to a medium pressure side suction port of two-stage compressor (12A) via an R capillary tube (16A) and an F evaporator (18A), connected to an F evaporator (26A) via an F capillary tube (24A), F evaporator (26A) is connected to a low-pressure side suction port of two stage compressor (12A) via a low-pressure suction pipe (28A), PMV (15A) can switch a simultaneous cooling mode and a freezing mode, and in the simultaneous cooling mode, a refrigerant flow rate toward R evaporator (18A) is adjusted by PMV (15A), and thereby a temperature difference control is performed so as to make a difference between an entrance temperature and an exit temperature of R evaporator (18A) equal to a preset temperature difference (for example, 4° C.).
    • 连接两级压缩机12A和冷凝器14A的高压侧排出口,连接冷凝器14A和PMV 15A,将PMV(15A)的制冷侧出口与 经由F毛细管(16A)和F蒸发器(18A)的两级压缩机(12A)的中压侧吸入口经由F毛细管(24A)与F蒸发器(24A)连接到F蒸发器(26A) 26A)通过低压吸管(28A)与二级压缩机(12A)的低压侧吸入口连接,PMV(15A)可切换同时冷却模式和冷冻模式,同时冷却 通过PMV(15A)调节朝向R蒸发器(18A)的制冷剂流量,由此进行温度差控制,以使R蒸发器(18A)的入口温度和出口温度之间的差等于 预设的温度差(例如4℃)。