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    Refrigeration system using liquid-to-liquid heat transfer for warm liquid defrost
    2.
    发明授权
    Refrigeration system using liquid-to-liquid heat transfer for warm liquid defrost 失效
    制冷系统采用液体 - 液体热传递，用于温暖的液体除霜

    公开(公告)号：US06170270B2

    公开(公告)日：2001-01-09

    申请号：US09239877

    申请日：1999-01-29

    申请人： Yakov Arshansky ,  David K. Hinde

    发明人： Yakov Arshansky ,  David K. Hinde

    IPC分类号： F25D2112

    CPC分类号： F25D21/12 ,  F25B2400/22 ,  F25D17/02

    摘要： A warm liquid defrost refrigeration system (10) comprising a primary refrigeration loop (12) including a compressor (16), a condenser (18), an expansion device (22), and a first side of a chiller (24), and a secondary refrigeration loop (14) including a pump (26), a refrigerated space heat exchanger (28), and a second side of the chiller. The refrigeration system further includes a defrost heat exchanger (40) having a hot side and a cold side. The hot side of the defrost heat exchanger is connected to the primary refrigeration loop between the condenser and the expansion device such that liquid refrigerant can flow from the condenser through the hot side of the defrost heat exchanger. The cold side of the defrost heat exchanger is connected to the secondary refrigeration loop at a point downstream of the pump such that coolant can be selectively transported from the pump through the cold side of the defrost heat exchanger. The cold side of said defrost heat exchanger is also connected to the refrigerated space heat exchanger such that it can be selectively used to transport the heated coolant to the refrigerated space heat exchanger for defrost.

    摘要翻译： 一种包括主冷冻回路（12）的暖液除霜制冷系统（10），包括压缩机（16），冷凝器（18），膨胀装置（22）和冷却器（24）的第一侧， 二级制冷回路（14）包括泵（26），冷藏空间热交换器（28）和冷却器的第二侧。 制冷系统还包括具有热侧和冷侧的除霜热交换器（40）。 除霜热交换器的热侧与冷凝器和膨胀装置之间的主要制冷回路连接，使得液体制冷剂可以从冷凝器通过除霜热交换器的热侧流动。 除霜热交换器的冷侧在泵的下游一点处连接到二次制冷回路，使得可以选择性地从泵通过除霜热交换器的冷侧输送冷却剂。 所述除霜热交换器的冷侧也连接到冷藏空间热交换器，使得其可以选择性地用于将加热的冷却剂输送到用于除霜的冷藏空间热交换器。

    Method of operating a refrigerated merchandiser system
    3.
    发明授权
    Method of operating a refrigerated merchandiser system 有权
    操作冷藏商品销售系统的方法

    公开(公告)号：US06298673B1

    公开(公告)日：2001-10-09

    申请号：US09652353

    申请日：2000-08-31

    申请人： Kwok Kwong Fung ,  Robert Hong Leung Chiang ,  Eugene Duane Daddis, Jr.

    发明人： Kwok Kwong Fung ,  Robert Hong Leung Chiang ,  Eugene Duane Daddis, Jr.

    IPC分类号： F25D2112

    CPC分类号： F25B47/02 ,  F25B39/02 ,  F25B41/043 ,  F25B41/062 ,  F25B2347/023 ,  F25B2400/22 ,  F25B2700/1933 ,  F25B2700/2117 ,  F25D21/04

    摘要： A refrigerated merchandiser system (10) includes a compressor (20), a condenser (30), a display case (100) having an evaporator (40), an expansion device (50), and an evaporator pressure control device (60) connected in a closed refrigerant circuit via refrigerant lines (12, 14, 16 and 18). The evaporator pressure control device (60) operates to maintain the pressure in the evaporator at a set point pressure so as to maintain the temperature of the refrigerant expanding from a liquid to a vapor within the evaporator (40) at a desired temperature. A controller (90) operatively associated with the evaporator pressure control device (60) maintains the set point pressure at a first pressure for the refrigerant equivalent to a first refrigerant temperature during a first refrigeration mode and at a second pressure for the refrigerant equivalent to a second refrigerant temperature about 2 to about 12 degrees warmer than the first temperature during a second refrigerant mode. The controller (90) sequences operation between said first refrigeration mode and said second refrigeration mode.

    摘要翻译： 一种冷藏商品销售系统（10）包括压缩机（20），冷凝器（30），具有蒸发器（40）的展示柜（100），膨胀装置（50）和与之连接的蒸发器压力控制装置 在通过制冷剂管线（12,14,16和18）的封闭的制冷剂回路中。 蒸发器压力控制装置（60）操作以将蒸发器中的压力保持在设定点压力，以便将制冷剂的温度从蒸发器（40）内的液体膨胀到蒸气在期望的温度。 与蒸发器压力控制装置（60）可操作地相关联的控制器（90）将设定点压力保持在与第一制冷模式期间的第一制冷剂温度相当的制冷剂的第一压力，并且在第二压力下将制冷剂等效于 第二制冷剂温度在第二制冷剂模式期间比第一温度加热约2至约12度。 控制器（90）对所述第一制冷模式和所述第二制冷模式之间的操作进行排序。