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    • 5. 发明申请
    • CURRENT LIMIT CONTROL ON A TRANSPORT REFRIGERATION SYSTEM
    • 运输制冷系统的电流限制控制
    • WO2012071159A1
    • 2012-05-31
    • PCT/US2011/059528
    • 2011-11-07
    • CARRIER CORPORATIONFULMER, Scott D.HOTALING, Donald B.PERKOVICH, Mark J.
    • FULMER, Scott D.HOTALING, Donald B.PERKOVICH, Mark J.
    • B60H1/32
    • F25D29/00B60H1/3225B60H1/3232F25B49/025F25B2700/15F25D29/003
    • A method for controlling the operation of a transport refrigeration system to limit current drawn by a compressor powered by AC electric current includes the steps of: (a) determining whether an ambient temperature in which the refrigeration unit is operating has been greater than a set point ambient temperature for a first time period; (b) determining whether the refrigeration unit has been operating in a temperature pulldown mode; (c) determining whether the AC electric current is equal to or exceeds a preset maximum current limit; (d) determining whether a time period between a last defrost cycle and a next previous defrost cycle is less than fifteen minutes; and (e) if the determination is YES in both of step (a) and step (b) and is also YES in at least one of step (c) and step (d), reducing the preset maximum current limit to a reset maximum current limit.
    • 一种用于控制运输制冷系统的操作以限制由AC电流供电的压缩电流的方法,包括以下步骤:(a)确定制冷单元运行的环境温度是否大于设定点 第一时间段的环境温度; (b)确定制冷单元是否已经在降温模式下运行; (c)确定AC电流是否等于或超过预设的最大电流限制; (d)确定最后一个除霜循环与下一个除霜周期之间的时间段是否小于十五分钟; 和(e)如果在步骤(a)和步骤(b)两者中确定为“是”,并且在步骤(c)和步骤(d)中的至少一个中也为“是”,则将预设的最大电流限制减小到复位最大值 电流限制。
    • 6. 发明申请
    • EVAPORATOR REFRIGERANT SATURATION DEMAND DEFROST
    • 蒸发器制冷剂饱和度需求变化
    • WO2012003202A2
    • 2012-01-05
    • PCT/US2011/042311
    • 2011-06-29
    • CARRIER CORPORATIONSENF, Raymond, Jr.
    • SENF, Raymond, Jr.
    • F25D21/00
    • F25B47/02F25B2700/2117F25B2700/21172F25D21/006
    • A method is disclosed for controlling initiation of a defrost cycle of an evaporator heat exchanger of a refrigeration system operatively associated with a refrigerated transport cargo box. The method includes the steps of establishing an return air-saturation temperature differential equal to the difference of a sensed air temperature of an air flow returning from the cargo box to pass over the heat exchange surface of the evaporator heat exchanger minus a refrigerant saturation temperature of a flow of refrigerant passing through the evaporator heat exchanger, comparing the return air-saturation temperature differential to a set point threshold defrost temperature differential, and if the return air-saturation temperature differential exceeds the set point threshold defrost temperature differential, initiating a defrost cycle for defrosting the evaporator heat exchanger.
    • 公开了一种用于控制与冷藏运输货箱可操作地相关联的制冷系统的蒸发器热交换器的除霜循环的启动的方法。 该方法包括以下步骤:建立等于从货物箱返回的气流的感测空气温度与蒸发器热交换器的热交换面之间的感测空气温度的差的回空气饱和温度差减去制冷剂饱和温度 通过蒸发器热交换器的制冷剂流,将返回空气饱和温差与设定点阈值除霜温度差进行比较,如果返回空气饱和温度差超过设定点阈值除霜温差,则启动除霜循环 用于除霜蒸发器热交换器。