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    • 44. 发明授权
    • Refrigeration cycle for vehicle air conditioner
    • 车用空调制冷循环
    • US06244060B1
    • 2001-06-12
    • US09613024
    • 2000-07-10
    • Yoshiaki TakanoSatoshi IzawaHajime Ito
    • Yoshiaki TakanoSatoshi IzawaHajime Ito
    • F25B4100
    • F25B41/04B60H1/00914B60H1/3205F25B41/062F25B2341/065F25B2400/19Y02B30/72
    • A refrigeration cycle for a vehicle air conditioner has a bypass passage between a compressor and an evaporator. In a heating mode, high-temperature gas refrigerant discharged from the compressor is directly introduced into the evaporator through the bypass passage while bypassing a condenser to improve a heating performance of the air conditioner. When a refrigerant recovery mode in which refrigerant staying in the condenser is forced to be discharged and introduced into the evaporator is set, a passage between the condenser and the evaporator in which a thermostatic expansion valve is disposed is controlled to be opened a predetermined amount. As a result, refrigerant staying in the condenser is securely returned to the evaporator even when a temperature of outside air is extremely low and the expansion valve is closed.
    • 用于车辆空调的制冷循环在压缩机和蒸发器之间具有旁通通道。 在加热模式中,通过旁路通路将从压缩机排出的高温气体制冷剂直接引入蒸发器,同时旁路冷凝器,以提高空调的加热性能。 当冷凝器中停留在冷凝器中的制冷剂回收模式被设定为排出并被引入到蒸发器中时,冷凝器与设置有恒温膨胀阀的蒸发器之间的通道被控制为打开预定量。 结果,即使当外部空气的温度非常低并且膨胀阀关闭时,停留在冷凝器中的制冷剂可靠地返回到蒸发器。