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    A METHOD FOR CONTROLLING A VAPOUR COMPRESSION SYSTEM WITH A VARIABLE RECEIVER PRESSURE SETPOINT
    2.
    发明申请
    A METHOD FOR CONTROLLING A VAPOUR COMPRESSION SYSTEM WITH A VARIABLE RECEIVER PRESSURE SETPOINT 审中-公开
    用可变接收器压力设定点控制蒸气压缩系统的方法

    公开(公告)号：WO2017067858A1

    公开(公告)日：2017-04-27

    申请号：PCT/EP2016/074758

    申请日：2016-10-14

    Applicant: DANFOSS A/S

    Inventor： PRINS, Jan ,  SCHMIDT, Frede ,  MADSEN, Kenneth, Bank ,  FREDSLUND, Kristian

    IPC: F25B49/02 ,  F25B41/00 ,  F25B9/08

    CPC classification number: F25B49/02 ,  F25B9/08 ,  F25B41/00 ,  F25B2341/0012 ,  F25B2400/075 ,  F25B2400/13 ,  F25B2400/16 ,  F25B2400/23 ,  F25B2600/2513 ,  F25B2700/19

    Abstract: A method for controlling a vapour compression system (1) is disclosed, the vapour compression system (1) comprising at least one expansion device (8) and at least one evaporator (9). For each expansion device (8), an opening degree of the expansion device (8) is obtained, and a representative opening degree, OD rep , is identified based on the obtained opening degree(s) of the expansion device(s) (8). The representative opening degree could be a maximum opening degree, OD max , being the largest among the obtained opening degrees. The representative opening degree, OD rep , is compared to a predefined target opening degree, OD target , and a minimum setpoint value, SP rec , for a pressure prevailing inside a receiver (7), is calculated or adjusted, based on the comparison. The vapour compression system (1) is controlled to obtain a pressure inside the receiver (7) which is equal to or higher than the calculated or adjusted minimum setpoint value, SP rec .

    Abstract translation: 公开了一种用于控制蒸气压缩系统（1）的方法，所述蒸气压缩系统（1）包括至少一个膨胀装置（8）和至少一个蒸发器（9）。 对于每个膨胀装置（8），获得膨胀装置（8）的开度，并且基于获得的膨胀装置（8）的开度识别出代表开度OD_reg。 膨胀装置（8）。 代表开放度可以是最大开放度，OD max max是获得的开放度中最​​大的开放度。 将代表性开度OD_reg与预定义的目标开度OD_target和最小设定值SP_rec_rec进行比较， 对于接收器（7）内主要的压力，基于比较来计算或调整。 控制蒸汽压缩系统（1）以获得接收器（7）内部的压力，该压力等于或高于计算或调节的最小设定点值SP rec。/ /

    A VAPOUR COMPRESSION SYSTEM COMPRISING A SECONDARY EVAPORATOR
    7.
    发明申请
    A VAPOUR COMPRESSION SYSTEM COMPRISING A SECONDARY EVAPORATOR 审中-公开
    包含二级蒸发器的蒸气压缩系统

    公开(公告)号：WO2017081157A1

    公开(公告)日：2017-05-18

    申请号：PCT/EP2016/077275

    申请日：2016-11-10

    Applicant: DANFOSS A/S

    Inventor： MADSEN, Kenneth, Bank ,  SCHMIDT, Frede ,  FREDSLUND, Kristian ,  PRINS, Jan

    IPC: F25B41/00 ,  F25B40/02 ,  F25B41/04 ,  F25B1/10 ,  F25B5/00

    CPC classification number: F25B41/00 ,  F25B1/10 ,  F25B5/00 ,  F25B40/02 ,  F25B41/04 ,  F25B2341/0012 ,  F25B2400/0407 ,  F25B2400/16 ,  F25B2400/23 ,  F25B2600/2509

    Abstract: A vapour compression system (1) comprising an ejector (9), a primary evaporator (17) and a secondary evaporator is disclosed. The vapour compression system (1) further comprises a flow control device (19) arranged with an inlet communicating with a liquid outlet (25) of the receiver (11), and an outlet of the flow control device (19) supplying refrigerant to the secondary evaporator, the secondary evaporator communicating with a secondary inlet (27) of the ejector (9). Thereby the receiver (11) pressure can be optimized irrespective of the refrigerant in the secondary evaporator and the primary (17) and secondary evaporators can provide cooling power simultaneously in an energy efficient manner.

    Abstract translation: 公开了包括喷射器（9），主蒸发器（17）和次蒸发器的蒸气压缩系统（1）。 蒸汽压缩系统（1）还包括流量控制装置（19），其设置有与接收器（11）的液体出口（25）连通的入口和流量控制装置（19）的出口， 次级蒸发器，次级蒸发器与喷射器（9）的次级入口（27）连通。 因此，无论次级蒸发器中的制冷剂如何，接收器（11）的压力都可以被优化，并且初级（17）和次级蒸发器可以以节能的方式同时提供冷却功率。

    A METHOD FOR SWITCHING COMPRESSOR CAPACITY
    8.
    发明申请
    A METHOD FOR SWITCHING COMPRESSOR CAPACITY 审中-公开
    一种开关压缩机容量的方法

    公开(公告)号：WO2017076798A1

    公开(公告)日：2017-05-11

    申请号：PCT/EP2016/076214

    申请日：2016-10-31

    Applicant: DANFOSS A/S

    Inventor： FREDSLUND, Kristian ,  PRINS, Jan ,  MADSEN, Kenneth, Bank ,  SCHMIDT, Frede

    IPC: F25B1/10 ,  F25B9/08 ,  F25B41/04

    CPC classification number: F25B1/10 ,  F25B9/08 ,  F25B41/04 ,  F25B2341/0012 ,  F25B2341/0662 ,  F25B2400/23 ,  F25B2600/2519

    Abstract: A method for operating a compressor unit (2) comprising one or more compressors (8, 9, 10) is disclosed, the compressor unit (2) being arranged in a vapour compression system (1). Two or more options for distributing the available compressor capacity of the compressor unit (2) between being connected to a high pressure suction line (11) and to a medium pressure suction line (13) are defined. For each option, an expected impact on one or more operating parameters of the vapour compression system (1), resulting from distributing the available compressor capacity according to the option, is predicted. An option is selected, based on the predicted expected impact for the options, and based on current operating demands of the vapour compression system (1), and the available compressor capacity is distributed according to the selected option, e.g. by means of settings of one or more valve arrangements (14, 15).

    Abstract translation: 公开了一种用于操作包括一个或多个压缩机（8,9,10）的压缩机单元（2）的方法，压缩机单元（2）布置在蒸汽压缩系统（1）中。 限定了用于在连接到高压吸入管线（11）和中压吸入管线（13）之间分配压缩机单元（2）的可用压缩机容量的两个或更多个选项。 对于每个选项，预测根据选项分配可用压缩机容量导致的对蒸汽压缩系统（1）的一个或多个操作参数的预期影响。 基于对期权的预测预期影响并基于蒸汽压缩系统（1）的当前操作需求选择选项，并且可用压缩机容量根据所选择的选项（例如， 通过设置一个或多个阀门装置（14,15）。

    A METHOD FOR CONTROLLING A VAPOUR COMPRESSION SYSTEM IN A FLOODED STATE
    9.
    发明申请
    A METHOD FOR CONTROLLING A VAPOUR COMPRESSION SYSTEM IN A FLOODED STATE 审中-公开
    一种控制水淹状态下蒸汽压缩系统的方法

    公开(公告)号：WO2017067863A1

    公开(公告)日：2017-04-27

    申请号：PCT/EP2016/074774

    申请日：2016-10-14

    Applicant: DANFOSS A/S

    Inventor： PRINS, Jan ,  SCHMIDT, Frede ,  MADSEN, Kenneth, Bank ,  FREDSLUND, Kristian

    IPC: F25B49/02

    CPC classification number: F25B49/022 ,  F25B2341/0012 ,  F25B2400/075 ,  F25B2400/16 ,  F25B2400/23 ,  F25B2500/28

    Abstract: A method for controlling a vapour compression system (1) is disclosed. The vapour compression system (1) comprises an ejector (6) and a liquid separating device (10) arranged in a suction line. At least one evaporator (9) is allowed to be operated in a flooded state. A flow rate of refrigerant from the liquid separating device (10) to the secondary inlet (15) of the ejector (6) is detected, and it is determined whether or not the flow rate is sufficient to remove liquid refrigerant produced by the evaporator(s) (9) being allowed to be operated in a flooded state from the liquid separating device (10). In the case that it is determined that the flow rate of refrigerant from the liquid separating device (10) to the secondary inlet (15) of the ejector (6) is insufficient to remove liquid refrigerant produced by the evaporator(s) (9), the flow rate of refrigerant from the liquid separating device (10) to the secondary inlet (15) of the ejector (6) is increased, and/or a flow rate of liquid refrigerant from the evaporator(s) (9) to the liquid separating device (10) is decreased.

    Abstract translation: 公开了一种用于控制蒸汽压缩系统（1）的方法。 蒸汽压缩系统（1）包括设置在吸入管线中的喷射器（6）和液体分离装置（10）。 允许至少一个蒸发器（9）在淹没状态下运行。 检测从液体分离装置（10）到喷射器（6）的次级入口（15）的制冷剂的流量，并且确定流量是否足以去除由蒸发器产生的液体制冷剂 s）（9）允许从液体分离装置（10）以淹没状态运行。 在确定从液体分离装置（10）到喷射器（6）的次级入口（15）的制冷剂流量不足以除去由蒸发器（9）产生的液体制冷剂时， ，从液体分离装置（10）到喷射器（6）的次级入口（15）的制冷剂的流量增加，和/或液体制冷剂从蒸发器（9）流到 液分离装置（10）减少。

    METHOD FOR CONTROLLING GAS PRESSURE IN COOLING PLANT
    10.
    发明申请
    METHOD FOR CONTROLLING GAS PRESSURE IN COOLING PLANT 审中-公开
    控制冷却厂气体压力的方法

    公开(公告)号：WO2013050035A1

    公开(公告)日：2013-04-11

    申请号：PCT/DK2012/000109

    申请日：2012-10-05

    Applicant: DANFOSS A/S

    Inventor： MADSEN, Kenneth, Bank ,  SCHMIDT, Frede

    IPC: F25B49/00

    CPC classification number: F25B49/027 ,  F25B39/04 ,  F25B49/005 ,  F25B2309/061 ,  F25B2313/0313 ,  F25B2600/17 ,  F25B2700/195 ,  F25B2700/2102

    Abstract: A method for monitoring gas pressure in a heat rejecting heat exchanger in a cooling circuit is disclosed. In the heat rejecting heat exchanger, pressure is controlled by means of a control unit, said control unit controlling at least one valve. The present capacity of one or more compressors in the cooling circuit compared to a maximum capacity of the one or more compressors is established. The maximum capacity may be the rated capacity of the compressors, or it may be a maximum capacity under the given circumstances and/or the given operating conditions. If the present capacity of the one or more compressors is at least at a level corresponding to a pre-set percentage of the maximum capacity, a period of time elapsed from a point in time where the compressor capacity reached said level is established. If the established period of time has a duration which is longer than a pre-set period of time, then it is concluding that the cooling medium is in a gas loop operational mode. Detecting a gas loop operational mode in an easy manner allows an operator or a controller to adjust operation of the cooling plant in such a manner that the cooling medium is brought out of the gas loop operational mode, thereby increasing the energy efficiency of the cooling plant.

    Abstract translation: 公开了一种用于监测冷却回路中的排热热交换器中的气体压力的方法。 在排热热交换器中，通过控制单元控制压力，所述控制单元控制至少一个阀。 与一个或多个压缩机的最大容量相比，建立冷却回路中一个或多个压缩机的当前容量。 最大容量可以是压缩机的额定容量，或者可以是在给定情况和/或给定操作条件下的最大容量。 如果一个或多个压缩机的当前容量至少处于与最大容量的预设百分比相对应的水平，则从压缩机容量达到所述水平的时间点到达的时间段被建立。 如果建立的时间段的持续时间长于预先设定的时间段，则判定冷却介质处于气体回路操作模式。 以简单的方式检测气体回路操作模式允许操作者或控制器以冷却介质脱离气体回路操作模式的方式调节冷却设备的操作，从而提高冷却设备的能量效率 。

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