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    • 6. 发明授权
    • Refrigerator and method of filling it with coolant
    • 冰箱和填充冷却液的方法
    • US06233961B1
    • 2001-05-22
    • US09341133
    • 1999-07-14
    • Toshio AshidaShinichi NakaishiIkuji IshiiNobutaka SasakiShin Furuta
    • Toshio AshidaShinichi NakaishiIkuji IshiiNobutaka SasakiShin Furuta
    • F25B4500
    • F25B45/00F25B9/006F25B13/00F25B41/04F25B2400/075F25B2400/16
    • In a main circuit (12) of refrigerant circuitry (11), a liquid-side shutoff valve (23) is provided between a liquid receiver (19) and an indoor heat exchanger (20). Downstream of the liquid-side shutoff valve (23), a refrigerant charging section (40A) including a refrigerant charge valve (40) connectable with a refrigerant cylinder (31) is provided. The refrigerant circuitry (11) includes a pressure relieving circuit (SVP) for conducting refrigerant in a high-pressure-side line of the refrigerant circuitry (11) to a low-pressure-side line thereof in additional refrigerant charging operation executed by operating compressors (15, 22) with the liquid-side shutoff valve (23) closed. The refrigerant circuitry (11) further includes an injection circuit (SVT) for lowering the temperature of refrigerant discharged from the compressors (15, 22) by supplying low-temperature refrigerant flowing downstream of an outdoor electronic expansion valve (18) to the compressors (15, 22) when the superheating degree of the discharged refrigerant is larger than a first predetermined temperature.
    • 在制冷剂回路(11)的主回路(12)中,液体截流阀(23)设置在液体接收器(19)和室内热交换器(20)之间。 在液侧截止阀(23)的下游设置有包括与制冷剂气缸(31)连接的制冷剂加注阀(40)的制冷剂填充部(40A)。 制冷剂回路(11)包括用于将制冷剂回路(11)的高压侧管线中的制冷剂导入其低压侧管线的减压电路(SVP) (15,22)与液体截止阀(23)关闭。 制冷剂回路(11)还包括喷射回路(SVT),该喷射回路(SVT)用于通过向室外电子膨胀阀(18)的下游供应低温制冷剂来降低从压缩机(15,22)排放的制冷剂的温度 排出制冷剂的过热度大于第一规定温度时,