公开(公告)号：WO2021058193A1

公开(公告)日：2021-04-01

申请号：PCT/EP2020/072723

申请日：2020-08-13

Applicant: DANFOSS A/S

Inventor： PRINS, Jan ,  FINN SLOTH LARSEN, Lars

IPC: F25B1/10 ,  F25B49/02 ,  F25B5/02 ,  F25B41/00 ,  F25B1/00

Abstract: A method for controlling a vapour compression system (1) is disclosed. The vapour compression system (1) comprises an ejector (4), and has a non-return valve (11) arranged in the refrigerant path between an outlet (12) of an evaporator (7) and an inlet (10) of a compressor unit (2), in such a manner that a refrigerant flow from the outlet (12) of the evaporator (7) towards the inlet (10) of the compressor unit (2) is allowed, while a fluid flow from the inlet (10) of the compressor unit (2) towards the outlet (12) of the evaporator (7) is prevented. A pressure, P0, of refrigerant leaving the evaporator (7) is measured and a value being representative for a pressure, Psuc, of refrigerant entering the compressor unit (2) is obtained. The pressures, P0 and Psuc, are compared to respective reference pressure values, P0,ref and Psuc,ref. In the case that ε0>εsuc, where ε0=P0-P0,ref and εsuc=Psuc-Psuc,ref, the compressor unit (2) is controlled based on P0, and in the case that εsuc>ε0, the compressor unit (2) is controlled based on Psuc.

公开(公告)号：WO2017134215A1

公开(公告)日：2017-08-10

申请号：PCT/EP2017/052366

申请日：2017-02-03

Applicant: DANFOSS A/S

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

IPC: F25B49/02

CPC classification number: F25B49/027 ,  F24F11/77 ,  F24F2140/20 ,  F25B2500/12 ,  F25B2500/19 ,  F25B2600/111 ,  F25B2700/2103 ,  F25B2700/2104 ,  F25B2700/21163 ,  Y02B30/743

Abstract: A method for controlling a fan (6) of a vapour compression system (1) is disclosed, the fan (6) being arranged to provide a secondary fluid flow across a heat rejecting heat exchanger (3). A temperature difference, ΔΤ= T out -T amb , between a temperature, T out , of refrigerant leaving the heat rejecting heat exchanger (3) and a temperature, T amb , of ambient air of the heat rejecting heat exchanger (3) is established. A setpoint value, ΔT setp , for the temperature difference, ΔΤ, is obtained, the setpoint value, ΔT setp , being dependent on the fan speed of the fan (6) in such a manner that the setpoint value, ΔT setp , increases as the fan speed increases. The fan speed of the fan (6) is controlled in order to control the temperature difference, ΔΤ, in accordance with the obtained setpoint value, ΔT setp .

Abstract translation: 公开了一种用于控制蒸气压缩系统（1）的风扇（6）的方法，所述风扇（6）被布置成提供穿过排热热交换器（3）的二次流体流动， 。 在离开排热热交换器（3）的制冷剂的温度T out之间的温度差ΔT = T out -T amb， ）和排热换热器（3）的环境空气的温度T amb建立。 获得用于温差ΔT的额定值ΔTsetp，其中设定值ΔTsetp取决于风扇6的风扇速度， 以这样的方式，当风扇速度增加时，额定值ΔTsetp 增加。 控制风扇（6）的风扇速度以根据所获得的设定值ΔT _{setp 控制温差ΔT。}

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。/ /

公开(公告)号：WO2014032672A1

公开(公告)日：2014-03-06

申请号：PCT/DK2013/050239

申请日：2013-07-12

Applicant: DANFOSS A/S

Inventor： PRINS, Jan

IPC: F25B49/02 ,  G05B13/02

CPC classification number: F25B25/005 ,  F24F3/06 ,  F24F11/63 ,  F24F11/83 ,  F24F11/85 ,  F25B49/02 ,  F25B2500/19 ,  F25B2600/0253 ,  F25B2600/13 ,  F25B2700/21172 ,  F25B2700/21173 ,  G05D23/1919 ,  Y02B30/741 ,  Y02B30/745

Abstract: A method for controlling a chiller system (1), the chiller system (1) comprising a primary side in the form of a vapour compression system, and a secondary side, is disclosed. The secondary side comprises a variable speed pump (8) for providing a secondary fluid flow through the evaporator (5) of the primary side in such a manner that heat exchange takes place between refrigerant of the primary side and fluid of the secondary side in the evaporator (5), the secondary side further comprising a temperature sensor (9, 10) arranged in the secondary fluid flow. The method comprises the steps of monitoring a temperature of the secondary fluid flow by means of the temperature sensor (9, 10), and controlling the compressor capacity and the speed of the variable speed pump (8) on the basis of the monitored temperature, and in order to obtain a predetermined setpoint temperature, in such a manner that the closed loop gain of the chiller system (1), K= K p .K e , where K p is the gain of the compressor capacity controller and K e is the gain of the evaporator (5), is kept substantially constant.

Abstract translation: 公开了一种用于控制冷却器系统（1）的方法，所述冷却器系统（1）包括蒸气压缩系统形式的初级侧和次级侧。 次级侧包括变速泵（8），用于提供通过初级侧的蒸发器（5）的次级流体流，使得在初级侧的制冷剂和次级侧的流体之间发生热交换 蒸发器（5），次级侧还包括设置在次级流体流中的温度传感器（9,10）。 该方法包括以下步骤：通过温度传感器（9,10）监测二次流体流的温度，并且基于所监视的温度来控制变速泵（8）的压缩机容量和速度， 并且为了获得预定的设定点温度，使得冷却器系统（1）的闭环增益K = Kp.Ke，其中Kp是压缩机容量控制器的增益，Ke是增益 蒸发器（5）保持基本恒定。

公开(公告)号：WO2013050036A1

公开(公告)日：2013-04-11

申请号：PCT/DK2012/000110

申请日：2012-10-05

Applicant: DANFOSS A/S

Inventor： PRINS, Jan

IPC: F25B49/02 ,  F25B1/10 ,  F25B7/00

CPC classification number: F04B41/06 ,  F25B1/10 ,  F25B7/00 ,  F25B49/022

Abstract: A method for coordinating operation between at least two groups of compressors in a cooling circuit is disclosed. A first group of compressors forms part of a low temperature (LT) part of the cooling circuit and a second group of compressors forms part of a high temperature (MT) part of the cooling circuit. Each of the compressor groups comprises one or more compressors, and each of the compressor groups comprises a controller, the controllers being capable of exchanging signals. In the case that the LT compressor group needs one or more of the LT compressors to start operation, it is investigated whether or not one or more of the MT compressors is/are operating. If this is the case, one or more of the LT compressors is/are allowed to start operation. If it is not the case, the suction pressure in the MT part of the cooling circuit is established, e.g. measured, and compared to a lower and an upper limit of a neutral pressure zone, said neutral pressure zone lying within an operating pressure zone of the MT part of the cooling circuit. Finally, the MT compressors and the LT compressors are operated based on the comparing step. The cooling system may be a cascade system or a booster system.

Abstract translation: 公开了一种用于协调冷却回路中的至少两组压缩机之间的操作的方法。 第一组压缩机形成冷却回路的低温（LT）部分的一部分，第二组压缩机形成冷却回路的高温（MT）部分的一部分。 每个压缩机组包括一个或多个压缩机，并且每个压缩机组包括控制器，控制器能够交换信号。 在LT压缩机组需要一台或多台LT压缩机开始运行的情况下，对MT压缩机中的一个或多个是否正在运行进行研究。 如果是这种情况，则允许一个或多个LT压缩机开始运行。 如果不是这样，则建立冷却回路的MT部分中的吸入压力，例如， 测量并与中性压力区域的下限和上限进行比较，所述中性压力区域位于冷却回路的MT部分的工作压力区域内。 最后，基于比较步骤操作MT压缩机和LT压缩机。 冷却系统可以是级联系统或增压系统。

公开(公告)号：WO2019243591A1

公开(公告)日：2019-12-26

申请号：PCT/EP2019/066502

申请日：2019-06-21

Applicant: DANFOSS A/S

Inventor： IZADI-ZAMANABADI, Roozbeh ,  THOMSEN, Carsten Mølhede ,  PRINS, Jan

IPC: F25B49/02 ,  F25B47/00 ,  F25B47/02

Abstract: A method for detecting ice accumulation on an evaporator (104) of a vapour compression system (100) is disclosed. The evaporator (104) is part of a vapour compression system (100). The vapour compression system (100) further comprises a compressor unit (101), a heat rejecting heat exchanger (102), and an expansion device (103). The compressor unit (101), the heat rejecting heat exchanger (102), the expansion device (103) and the evaporator (104) are arranged in a refrigerant path, and an air flow is flowing across the evaporator (104). At least one temperature of air leaving the evaporator (104) is measured and a control value based on the measured temperature is derived. Determining whether ice has accumulated on the evaporator (104) by comparing the derived control value and a setpoint value.

公开(公告)号：WO2018202496A1

公开(公告)日：2018-11-08

申请号：PCT/EP2018/060572

申请日：2018-04-25

Applicant: DANFOSS A/S

Inventor： LARSEN, Lars Finn Sloth ,  PRINS, Jan ,  GREEN, Torben

IPC: F25B5/02 ,  F25B49/02

Abstract: A method for controlling suction pressure in a vapour compression system (1) comprising one or more cooling entities (5) is disclosed. For each cooling entity (5), a maximum required suction pressure and/or a required change in suction pressure for maintaining a target temperature in the refrigerated volume is obtained. A most loaded cooling entity (5) among the one or more cooling entities (5) is identified, based on the maximum required suction pressures and/or the required changes in suction pressure. The suction pressure of the vapour compression system (1) is controlled in accordance with the maximum required suction pressure and/or required change in suction pressure for the identified most loaded cooling entity (5).

公开(公告)号：WO2018095786A1

公开(公告)日：2018-05-31

申请号：PCT/EP2017/079359

申请日：2017-11-15

Applicant: DANFOSS A/S

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

IPC: F25B49/02 ,  F25B41/00

Abstract: A method for controlling a vapour compression system (1) is disclosed. Malfunctioning of a gas bypass valve (8) is registered. An actual opening degree of the gas bypass valve (8) is derived, and a target opening degree of the gas bypass valve (8) is derived, based on one or more control parameters of the vapour compression system (1). The actual opening degree is compared to the target opening degree, and the vapour compression system (1) is controlled based on the comparison, and in order to match a mass flow of gaseous refrigerant through the gas bypass valve (8) to the actual opening degree of the gas bypass valve (8).

公开(公告)号：WO2017029011A1

公开(公告)日：2017-02-23

申请号：PCT/EP2016/065575

申请日：2016-07-01

Applicant: DANFOSS A/S

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

IPC: F25B5/02 ,  F25B41/00 ,  F25B49/02

CPC classification number: F25B49/02 ,  F25B41/00 ,  F25B2341/0012 ,  F25B2341/0015 ,  F25B2400/0751

Abstract: A vapour compression system (1) comprising at least two evaporator groups (5a, 5b, 5c), each evaporator group (5a, 5b, 5c) comprising an ejector unit (7a, 7b, 7c), at least one evaporator (9a, 9b, 9c) and a flow control device (8a, 8b, 8c) controlling a flow of refrigerant to the at least one evaporator (9a, 9b, 9c). For each evaporator group (5a, 5b, 5c) the outlet of the evaporator (9a, 9b, 9c) is connected to a secondary inlet (12a, 12b, 12c) of the corresponding ejector unit (7a, 7b, 7c). The vapour compression system (1) can be controlled in an energy efficient and stable manner. A method for controlling the vapour compression system (1) is also disclosed.

Abstract translation: 包括至少两个蒸发器组（5a，5b，5c）的蒸汽压缩系统（1），每个蒸发器组（5a，5b，5c）包括喷射器单元（7a，7b，7c），至少一个蒸发器（9a， 9b，9c）和控制制冷剂流向至少一个蒸发器（9a，9b，9c）的流量控制装置（8a，8b，8c）。 对于每个蒸发器组（5a，5b，5c），蒸发器（9a，9b，9c）的出口连接到相应的喷射器单元（7a，7b，7c）的次级入口（12a，12b，12c）。 蒸汽压缩系统（1）可以以节能和稳定的方式进行控制。 还公开了一种用于控制蒸汽压缩系统（1）的方法。

公开(公告)号：WO2016091418A1

公开(公告)日：2016-06-16

申请号：PCT/EP2015/073211

申请日：2015-10-08

Applicant: DANFOSS A/S

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

IPC: F25B41/00 ,  F25B41/04 ,  F25B49/02 ,  F25B9/00

CPC classification number: F25B9/008 ,  F25B41/00 ,  F25B41/043 ,  F25B49/02 ,  F25B2309/061 ,  F25B2341/0012 ,  F25B2341/0662 ,  F25B2400/0407 ,  F25B2400/13 ,  F25B2400/23 ,  F25B2500/31 ,  F25B2600/2507 ,  F25B2700/195 ,  F25B2700/2109 ,  F25B2700/21151 ,  F25B2700/21175

Abstract: A method for controlling a valve arrangement (12), e.g. in the form of a three way valve, in a vapour compression system (1) is disclosed, the vapour compression system (1) comprising an ejector (6). The valve arrangement (12) is arranged to supply refrigerant to a compressor unit (2) from the gaseous outlet (11) of a receiver (7) and/or from the outlet of an evaporator (9). The vapour compression system (1) may be operated in a first mode of operation (summer mode) or in a second mode of operation (winter mode). When operated in the second mode of operation, it is determined whether or not conditions for operating the vapour compression system (1) in the first mode of operation are prevailing. If this is the case, the valve arrangement (12) is actively switched to the first mode of operation by closing a first inlet (13) towards the evaporator (7) and fully opening a second inlet (14) towards the receiver (7).

Abstract translation: 一种用于控制阀装置（12）的方法， 在三通阀的形式中，公开了一种蒸气压缩系统（1），所述蒸汽压缩系统（1）包括喷射器（6）。 阀装置（12）被布置成从接收器（7）的气体出口（11）和/或从蒸发器（9）的出口向制冷剂单元（2）供应制冷剂。 蒸汽压缩系统（1）可以在第一操作模式（夏季模式）或第二操作模式（冬季模式）中操作。 当在第二操作模式下操作时，确定在第一操作模式中是否运行蒸气压缩系统（1）的条件。 如果是这种情况，则通过关闭朝向蒸发器（7）的第一入口（13）并朝向接收器（7）完全打开第二入口（14），阀装置（12）被主动切换到第一操作模式， 。