公开(公告)号：WO2014082888A1

公开(公告)日：2014-06-05

申请号：PCT/EP2013/074073

申请日：2013-11-18

Applicant: DANFOSS A/S

Inventor： PRINS, Jan ,  SCHMIDT, Frede ,  GREEN, Torben

IPC: F25B5/02 ,  F25B6/00 ,  F25B49/02

CPC classification number: F25B7/00 ,  F25B5/02 ,  F25B6/00 ,  F25B49/02 ,  F25B49/022 ,  F25B2400/075 ,  F25B2600/0251 ,  F25B2600/0253 ,  F25B2600/0272 ,  F25B2600/2513 ,  F25B2700/21172 ,  F25D2600/06 ,  Y02B30/741

Abstract: A method for controlling operation of a refrigeration system (1), comprising one or more refrigeration entities (4), is disclosed. Each entity controller (7) obtains a measure for an error value between the measured value of a compressor control parameter and a setpoint value (8) for the compressor control parameter, and each entity controller (7) adjusts a refrigeration load of the corresponding refrigeration entity (4) to correspond to a cooling capacity of the compressor(s) (2), and in accordance with the obtained measure for an error value.

Abstract translation: 公开了一种用于控制包括一个或多个制冷实体（4）的制冷系统（1）的操作的方法。 每个实体控制器（7）获得压缩机控制参数的测量值和压缩机控制参数的设定值（8）之间的误差值的测量值，并且每个实体控制器（7）调整相应制冷器的制冷负荷 实体（4）对应于压缩机（2）的冷却能力，并且根据获得的误差值测量值。

公开(公告)号：WO2013156158A1

公开(公告)日：2013-10-24

申请号：PCT/EP2013/001167

申请日：2013-04-19

Applicant: DANFOSS A/S

Inventor： PRINS, Jan ,  SCHMIDT, Frede

IPC: F25B49/02

CPC classification number: F25B49/02 ,  F25B49/027 ,  F25B2313/0294 ,  F25B2600/11 ,  F25B2600/111 ,  F25B2700/172 ,  F25B2700/2103 ,  F25B2700/2106 ,  F25B2700/21163 ,  F25D17/06 ,  Y02B30/743

Abstract: A method of controlling a fan of a vapour compression system is disclosed. The vapour compression system comprises a compressor, a heat rejecting heat exchanger, e.g. in the form of a gas cooler or a condenser, an expansion device and an evaporator arranged in a refrigerant circuit. The fan is arranged to provide a secondary fluid flow across the heat rejecting heat exchanger, e.g. in the form of an air flow. The method comprises the steps of establishing a temperature, T 1 , of refrigerant leaving the heat rejecting heat exchanger, establishing a temperature, T 2 , of ambient air of the heat rejecting heat exchanger, and deriving a temperature difference, ΔΤ=Τ 1 -Τ 2 , between the temperature (T 1 ) of refrigerant leaving the heat rejecting heat exchanger and the temperature (T 2 ) of ambient air of the heat rejecting heat exchanger. The temperature difference, ΔΤ, is compared to a first threshold value and to a second threshold value, the second threshold value being smaller than or equal to the first threshold value, and the rotational speed of the fan is controlled on the basis of the comparing step. The method allows the electrical energy consumption of the fan to be reduced without risking instability of the vapour compression system.

Abstract translation: 公开了一种控制蒸气压缩系统的风扇的方法。 蒸气压缩系统包括压缩机，排热热交换器，例如， 以气体冷却器或冷凝器的形式，布置在制冷剂回路中的膨胀装置和蒸发器。 风扇被布置成提供穿过排热热交换器的次级流体流，例如， 以空气流的形式。 该方法包括以下步骤：建立离开排热热交换器的制冷剂的温度T1，建立排热热交换器的环境空气的温度T2，并且导出温度差ΔTau= Tau1-Tau2， 离开散热热交换器的制冷剂的温度（T1）和排热热交换器的环境空气的温度（T2）。 将温度差DeltaTau与第一阈值和第二阈值进行比较，第二阈值小于或等于第一阈值，并且基于比较来控制风扇的转速 步。 该方法允许降低风扇的电能消耗，而不会造成蒸气压缩系统的不稳定性。

公开(公告)号：EP3619480A1

公开(公告)日：2020-03-11

申请号：EP18725759.7

申请日：2018-04-25

Applicant: Danfoss A/S

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

IPC: F25B5/02 ,  F25B49/02

公开(公告)号：EP3334985B1

公开(公告)日：2019-05-01

申请号：EP16733622.1

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

公开(公告)号：EP3365618A1

公开(公告)日：2018-08-29

申请号：EP16781477.1

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 ,  F25B2341/0661 ,  F25B2400/075 ,  F25B2400/13 ,  F25B2400/16 ,  F25B2400/23 ,  F25B2500/19 ,  F25B2500/31 ,  F25B2600/2501 ,  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, ODrep, 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, ODmax, being the largest among the obtained opening degrees. The representative opening degree, ODrep, is compared to a predefined target opening degree, ODtarget, and a minimum setpoint value, SPrec, 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, SPrec.

公开(公告)号：EP3334985A1

公开(公告)日：2018-06-20

申请号：EP16733622.1

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: F25B41/062 ,  F22B3/045 ,  F25B41/00 ,  F25B43/006 ,  F25B49/02 ,  F25B49/027 ,  F25B2341/0012 ,  F25B2341/0013 ,  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.

公开(公告)号：EP3201539A1

公开(公告)日：2017-08-09

申请号：EP15753368.8

申请日：2015-08-21

Applicant: Danfoss A/S

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

IPC: F25B49/00

CPC classification number: F25B45/00 ,  F25B49/00 ,  F25B49/005 ,  F25B49/02 ,  F25B2400/16 ,  F25B2400/19 ,  F25B2500/19 ,  F25B2500/222 ,  F25B2700/04 ,  G01K13/00

Abstract: A level sensor is configured to provide a receiver level indicating an amount of the refrigerant present in the receiver and a level model provides a heat rejecting heat exchanger estimate indicating an amount of the refrigerant present in the heat rejecting heat exchanger based on a temperature of the refrigerant. From the sensor and the model, a loss of refrigerant from the RVCS system is estimated.

Abstract translation: 液位传感器被配置为提供指示存在于接收器中的制冷剂的量的接收器水平，并且水平模型提供排热换热器估计，其指示存在于排热换热器中的制冷剂的量基于 制冷剂。 从传感器和模型估计RVCS系统的制冷剂损失。

公开(公告)号：EP2890940A1

公开(公告)日：2015-07-08

申请号：EP13742152.5

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, the chiller system 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 for providing a secondary fluid flow through the evaporator 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, the secondary side further comprising a temperature sensor 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, and controlling the compressor capacity and the speed of the variable speed pump 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, K=Kp·Ke, where Kp is the gain of the compressor capacity controller and Ke is the gain of the evaporator, is kept substantially constant.

公开(公告)号：EP2798284A1

公开(公告)日：2014-11-05

申请号：EP12772210.6

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压缩机组需要一个或多个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：EP3628942A1

公开(公告)日：2020-04-01

申请号：EP18196411.5

申请日：2018-09-25

Applicant: Danfoss A/S

Inventor： PRINS, Jan ,  LARSEN, Lars Finn Sloth

IPC: F25B49/02

Abstract: A method for controlling a vapour compression system (1) comprising a compressor unit (2) comprising one or more 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. A pressure value indicating a pressure prevailing inside the receiver (6) is obtained, and the obtained pressure value is compared to a first threshold pressure value. In the case that the obtained pressure value is below the first threshold pressure value, the compressor(s) (3, 12) of the compressor unit (2) are controlled in order to reduce a suction pressure of the vapour compression system (1).