公开(公告)号：WO2017067860A1

公开(公告)日：2017-04-27

申请号：PCT/EP2016/074765

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

CPC classification number: F25B49/022 ,  F25B41/00 ,  F25B2341/0012 ,  F25B2341/0661 ,  F25B2400/075 ,  F25B2400/13 ,  F25B2400/16 ,  F25B2400/23 ,  F25B2500/29 ,  F25B2500/31 ,  F25B2700/19 ,  F25B2700/197 ,  F25B2700/21163

Abstract: A method for controlling a vapour compression system (1) comprising an ejector (6) is disclosed. In the case that a pressure difference between a pressure prevailing in the receiver (7) and a pressure of refrigerant leaving the evaporator (9) decreases below a first lower threshold value, the pressure of refrigerant leaving the heat rejecting heat exchanger (5) is kept at a level which is slightly higher than the pressure level providing optimal COP. Thereby the ejector (6) can operate at lower ambient temperatures, and the energy efficiency of the vapour compression system (1) is improved.

Abstract translation: 公开了一种用于控制包括喷射器（6）的蒸汽压缩系统（1）的方法。 在接收器（7）中存在的压力与离开蒸发器（9）的制冷剂的压力之间的压力差降低到低于第一下阈值的情况下，离开排热热交换器（5）的制冷剂的压力是 保持在略高于提供最佳COP的压力水平的水平。 因此，喷射器（6）可以在较低的环境温度下运行，并且蒸汽压缩系统（1）的能量效率得到改善。

公开(公告)号：WO2015039765A1

公开(公告)日：2015-03-26

申请号：PCT/EP2014/052442

申请日：2014-02-07

Applicant: DANFOSS A/S

Inventor： PRINS, Jan

IPC: F04B39/08 ,  F04B49/03 ,  F04B49/02

CPC classification number: F04B49/03 ,  F04B27/005 ,  F04B39/08 ,  F04B49/02

Abstract: A method of operating a reciprocating compressor for a vapour compression system is disclosed. The reciprocating compressor comprises at least two cylinders and at least two unloaders, each unloader can be operated in an idle mode or in an active mode and therefore the reciprocating compressor can run in more than two capacity states. The capacity states alternates periodically between states in such a way that a substantially continuous range of effective capacities can be obtained while the individual cylinders are evenly loaded.

Abstract translation: 公开了一种用于蒸汽压缩系统的往复式压缩机的操作方法。 往复式压缩机包括至少两个气缸和至少两个卸载器，每个卸载器可以在空转模式或活动模式下操作，因此往复式压缩机可以以两个以上的容量状态运行。 容量状态在状态之间周期性地交替，使得可以在各个气缸均匀加载的同时获得基本连续的有效容量范围。

公开(公告)号：WO2013004233A1

公开(公告)日：2013-01-10

申请号：PCT/DK2012/000079

申请日：2012-07-03

Applicant: DANFOSS A/S ,  PRINS, Jan

Inventor： PRINS, Jan

IPC: F25B9/00 ,  F25B49/02

CPC classification number: F25B49/022 ,  F25B9/008 ,  F25B49/02 ,  F25B2309/061 ,  F25B2341/0662 ,  F25B2400/13 ,  F25B2400/16 ,  F25B2500/19 ,  F25B2600/17 ,  F25B2600/2503 ,  F25B2700/21163

Abstract: A method for controlling operation of a vapour compression system ( 1), and a vapour compression system ( 1) are disclosed. The vapour compression system (1) comprises a compressor (2), a heat rejecting heat exchanger (3), a controllable valve (4), a receiver (5), at least one expansion device and at least one evaporator arranged along a refrigerant path having refrigerant flowing therein. The vapour compression system (1) is capable of being operated in a subcritical control regime as well as in a supercritical control regime. The method comprises the steps of measuring a temperature, T GC , of refrigerant leaving the heat rejecting heat exchanger; calculating a pressure reference, P GC,Ref , based on the measured temperature, T GC , and using a calculation formula being applicable to the subcritical control regime as well as to the supercritical control regime; and controlling an opening degree of the controllable valve in order to obtain a pressure of refrigerant leaving the heat rejecting heat exchanger which is equal to the calculated pressure reference, P GC , Ref. Since the calculation formula is applicable to the subcritical control regime as well as to the supercritical control regime, only one calculation formula is necessary, and the vapour compression system (1) can thereby be controlled in a very easy manner.

Abstract translation: 公开了一种用于控制蒸气压缩系统（1）和蒸汽压缩系统（1）的操作的方法。 蒸气压缩系统（1）包括压缩机（2），排热热交换器（3），可控阀（4），接收器（5），至少一个膨胀装置和至少一个沿着制冷剂排列的蒸发器 在其中流动制冷剂的路径。 蒸气压缩系统（1）能够以亚临界控制方式以及超临界控制方式运行。 该方法包括测量离开排热热交换器的制冷剂的温度TGC的步骤; 基于测量温度TGC计算压力参考值PGC，Ref，并使用适用于亚临界控制方案以及超临界控制方案的计算公式; 并且控制可控阀的开度以获得离开排热热交换器的制冷剂压力等于所计算的压力参考值PGC，Ref。 由于计算公式适用于亚临界控制方案和超临界控制方案，因此只需要一个计算公式，从而可以非常容易地控制蒸气压缩系统（1）。

公开(公告)号：WO2022194488A1

公开(公告)日：2022-09-22

申请号：PCT/EP2022/054094

申请日：2022-02-18

Applicant: DANFOSS A/S

Inventor： PRINS, Jan ,  REICHWALD, Peter ,  PISCOPIELLO, Salvatore

IPC: F25B41/39 ,  F25B49/02

Abstract: A method for controlling a vapour compression system (1) is disclosed. The vapour compression system (1) comprises a compressor unit (2) comprising at least one main compressor (3) and at least one receiver compressor (4), a heat rejecting heat exchanger (5), a receiver (7), an expansion device (8) and an evaporator (9) being arranged in a refrigerant path. The vapour compression system (1) further comprises a bypass valve (12) fluidly interconnecting the gaseous outlet (10) of the receiver (7) and the main compressor(s) (3). A first pressure setpoint for a pressure prevailing in the receiver (7) and a second pressure setpoint for the pressure prevailing in the receiver (7) are defined, the second pressure setpoint being higher than the first pressure setpoint. An opening degree of the bypass valve (12) is controlled in order to regulate the pressure prevailing in the receiver (7) in accordance with the first pressure setpoint, and in order to reach the first pressure setpoint, in the case that a load demand of the vapour compression system (1) exceeds a maximum capacity of the receiver compressor(s) (4). The opening degree of the bypass valve (12) is controlled in order to regulate the pressure prevailing in the receiver (7) in accordance with the second pressure setpoint, and in order to reach the second pressure setpoint, in the case that the receiver compressor(s) (4) is/are operating and the load demand of the vapour compression system (1) is below the maximum capacity of the receiver compressor(s) (4).

公开(公告)号：WO2020064368A1

公开(公告)日：2020-04-02

申请号：PCT/EP2019/074500

申请日：2019-09-13

Applicant: DANFOSS A/S

Inventor： PRINS, Jan ,  LARSEN, Lars Finn Sloth

IPC: F25B1/10 ,  F25B49/02

Abstract: A method for controlling a vapour compression system (1) comprising a compressor unit (2) comprising at least two compressors (3, 12), a heat rejecting heat exchanger (4),a receiver (6), an expansion device (7) and an evaporator (8) arranged in a refrigerant path is disclosed. At least one of the compressors is a main compressor (3) being fluidly connected to an outlet of the evaporator (8) and at least one of the compressors is a receiver compressor (12) being fluidly connected to a gaseous outlet (10) of the receiver (6). A flow of vapour entering the receiver (6), such as a mass flow of vapour entering the receiver (6) is estimated and compared to a first threshold value. In the case that the estimated flow is above the first threshold value, a pressure prevailing inside the receiver (6) is controlled by operating the receiver compressor (12).

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。

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）。

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。

公开(公告)号：WO2016198258A1

公开(公告)日：2016-12-15

申请号：PCT/EP2016/061736

申请日：2016-05-25

Applicant: DANFOSS A/S

Inventor： SCHMIDT, Frede ,  FREDSLUND, Kristian ,  PRINS, Jan

IPC: F25B29/00 ,  F25B49/02 ,  F25B40/04 ,  F25B1/10

CPC classification number: F25B29/003 ,  F25B1/10 ,  F25B40/04 ,  F25B49/022 ,  F25B2400/075 ,  F25B2400/13 ,  F25B2400/23 ,  Y02B30/52

Abstract: A method for operating a vapour compression system (1) comprising a heat recovery heat exchanger (4) is disclosed. The heat recovery system requests a required level of recovered heat to be provided by the heat recovery heat exchanger (4) to the heat recovery system, generates a signal indicating the required level of recovered heat, and supplies the generated signal to a control unit of the vapour compression system (1). A setpoint value for at least one control parameter of the vapour compression system (1) is calculated, based on the generated signal, and the vapour compression system (1) is operated in accordance with the calculated setpoint value(s).

Abstract translation: 公开了一种用于操作包括热回收热交换器（4）的蒸气压缩系统（1）的方法。 热回收系统要求热回收热交换器（4）向热回收系统提供所需的回收热水平，产生指示回收热量所需水平的信号，并将产生的信号提供给 蒸气压缩系统（1）。 基于产生的信号计算蒸汽压缩系统（1）的至少一个控制参数的设定值，并且蒸气压缩系统（1）根据计算出的设定值操作。

公开(公告)号：WO2016078824A1

公开(公告)日：2016-05-26

申请号：PCT/EP2015/073155

申请日：2015-10-07

Applicant: DANFOSS A/S

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

IPC: F25B9/00 ,  F25B49/02

CPC classification number: F25B9/008 ,  F25B41/043 ,  F25B49/02 ,  F25B2309/061 ,  F25B2341/0662 ,  F25B2400/075 ,  F25B2400/13 ,  F25B2400/23 ,  F25B2500/29 ,  F25B2500/31 ,  F25B2600/0253 ,  F25B2600/2509 ,  F25B2700/195 ,  F25B2700/2106 ,  F25B2700/21163 ,  Y02B30/741

Abstract: A method for controlling a vapour compression system (1), the vapour compression system (1) comprising a compressor unit (2) comprising one or more compressors (10, 11, 13), is disclosed. At least one of the compressors (11, 13) of the compressor unit (2) is connectable to a gaseous outlet (9) of a receiver (5), and at least one of the compressors (10, 13) of the compressor unit (2) is connectable to an outlet of an evaporator (7). A parameter of the vapour compression system (1) is measured, an enthalpy of refrigerant leaving the heat rejecting heat exchanger (3) being derivable from the measured parameter. A setpoint value for a pressure inside the receiver (5) is calculated, based on the measured parameter, and the compressor unit (2) is operated in accordance with the calculated setpoint value, and in order to obtain a pressure inside the receiver (5) which is equal to the calculated setpoint value. The vapour compression system (1) is operated in an energy efficient manner over a wide range of ambient temperatures.

Abstract translation: 公开了一种用于控制蒸汽压缩系统（1）的方法，所述蒸汽压缩系统（1）包括包括一个或多个压缩机（10,11,13）的压缩机单元（2）。 压缩机单元（2）的至少一个压缩机（11,13）可连接到接收器（5）的气体出口（9），压缩机单元（2）的至少一个压缩机（10,13） （2）可连接到蒸发器（7）的出口。 测量蒸气压缩系统（1）的参数，离开排热热交换器（3）的制冷剂焓可从测量参数推导出。 基于测量参数计算接收器（5）内的压力的设定值，并且根据计算的设定值操作压缩机单元（2），并且为了获得接收器内部的压力（5 ），其等于计算的设定值。 蒸汽压缩系统（1）在宽范围的环境温度下以能量有效的方式操作。