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    • 5. 发明申请
    • HEAT PUMP SYSTEM AND METHOD OF OPERATING
    • 热泵系统及其运行方法
    • US20110203299A1
    • 2011-08-25
    • US13126046
    • 2008-11-11
    • Li JingShufu DingHaijun Li
    • Li JingShufu DingHaijun Li
    • F25D21/06F25B13/00
    • F25B13/00F25B47/025F25B2313/02741F25B2400/0411F25B2400/13F25B2400/19
    • A heat pump system operable in a cooling mode, a heating mode and a defrost mode includes a refrigerant compressor (20), a reversing valve (30), a first heat exchanger (40) and a second heat exchanger (50) disposed in a refrigerant circuit, and a primary expansion valve (45) disposed in the refrigerant circuit between said first heat exchanger (40) and said second heat exchanger (50); said reversing valve (30) is positionable in a first position for operation of said heat pump system in the cooling mode or defrost mode and is positionable in a second position for operation of said heat pump system in the heating mode; a refrigerant bypass circuit establishes a refrigerant flow path from the refrigerant circuit at a first location upstream of said primary expansion valve (45) and downstream of said first heat exchanger (40) with respect to refrigerant flow in the defrost mode to a liquid reservoir (70) disposed in the refrigerant circuit at a second location downstream of said primary expansion valve (45) with respect to refrigerant flow in the defrost mode.
    • 在冷却模式,加热模式和除霜模式下可操作的热泵系统包括:制冷剂压缩机(20),换向阀(30),第一热交换器(40)和第二热交换器(50) 制冷剂回路和设置在所述第一热交换器(40)和所述第二热交换器(50)之间的制冷剂回路中的一级膨胀阀(45)。 所述换向阀(30)可定位在第一位置,用于在制冷模式或除霜模式下操作所述热泵系统,并且可定位在第二位置,用于在加热模式下操作所述热泵系统; 制冷剂旁路回路在所述主膨胀阀(45)的上游的第一位置和所述第一热交换器(40)的下游,相对于除霜模式下的制冷剂流向制冷剂回路建立制冷剂流路, 70),其设置在所述主膨胀阀(45)的下游的第二位置处,与所述除霜模式下的制冷剂流相对。