公开(公告)号：WO2016078825A1

公开(公告)日：2016-05-26

申请号：PCT/EP2015/073171

申请日：2015-10-07

Applicant: DANFOSS A/S

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

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

CPC classification number: F25B49/02 ,  F25B9/008 ,  F25B41/00 ,  F25B41/003 ,  F25B2341/0012 ,  F25B2341/0015 ,  F25B2341/0662 ,  F25B2400/075 ,  F25B2400/13 ,  F25B2400/23 ,  F25B2500/29 ,  F25B2500/31 ,  F25B2600/02 ,  F25B2600/0253 ,  F25B2600/2507 ,  F25B2700/197 ,  Y02B30/741

Abstract: A method for controlling a vapour compression system (1) is disclosed, the vapour compression system (1) comprising an ejector (5). The method comprises controlling a compressor unit (2) in order to adjust a pressure inside a receiver (6), on the basis of a detected pressure of refrigerant leaving an evaporator (8). The portion of refrigerant leaving the evaporator (8) which is supplied to a secondary inlet (15) of the ejector is maximised and the portion of refrigerant supplied directly to the compressor unit (2) is minimised, while ensuring that the pressure of refrigerant leaving the evaporator (8) does not decrease below an acceptable level.

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）包括喷射器（5）。 该方法包括基于检测到的离开蒸发器（8）的制冷压力来控制压缩机单元（2）以便调节接收器（6）内部的压力。 离开蒸发器的制冷剂部分（8）被最大化并且直接供应到压缩机单元（2）的制冷剂部分最小化，同时确保制冷剂离开的压力 蒸发器（8）不降低到可接受的水平以下。

公开(公告)号：WO2018177956A1

公开(公告)日：2018-10-04

申请号：PCT/EP2018/057515

申请日：2018-03-23

Applicant: DANFOSS A/S

Inventor： PRINS, Jan ,  MADSEN, Kenneth Bank ,  LARSEN, Lars Finn Sloth

IPC: F25B49/02 ,  F25B1/10 ,  F25B9/08 ,  F25B41/04 ,  F25B5/02

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. A liquid level sensor (18) is arranged in the liquid separating device (10). A liquid level in the liquid separating device (10) is monitored by means of the liquid level sensor (18). In the case that the liquid level in the liquid separating device (10) is above a predefined threshold level, a control parameter of the vapour compression system (1) is adjusted in order to increase a flow rate of refrigerant from the liquid separating device (10) to the secondary inlet (15) of the ejector (6) and/or decrease a flow rate of liquid refrigerant from the evaporator(s) (9) to the liquid separating device (10).

公开(公告)号：WO2018157961A1

公开(公告)日：2018-09-07

申请号：PCT/EP2017/083858

申请日：2017-12-20

Applicant: DANFOSS A/S

Inventor： LARSEN, Lars Finn Sloth ,  PRINS, Jan ,  MADSEN, Kenneth Bank

IPC: F25B1/10 ,  F25B49/02 ,  F25B41/00 ,  F25B41/04 ,  F25B5/02

Abstract: A method for controlling ejector capacity in a vapour compression system (1) is disclosed. A parameter value being representative for a flow rate of liquid refrigerant from the evaporator(s) (8, 10) and into a return pipe (12, 13) is obtained, and the capacity of the ejector(s) (6) is adjusted based on the obtained parameter value. Ejector capacity may be shifted between low pressure ejectors (liquid ejectors) (6a, 6b, 6c, 6d) and high pressure ejectors (gas ejectors) (6e, 6f).

公开(公告)号：WO2016150663A1

公开(公告)日：2016-09-29

申请号：PCT/EP2016/054349

申请日：2016-03-02

Applicant: DANFOSS A/S

Inventor： IZADI-ZAMANABADI, Roozbeh ,  GREEN, Torben ,  PRINS, Jan

IPC: F24F3/044 ,  F24F11/00

CPC classification number: F24F11/30 ,  F24F3/044 ,  F24F3/1423 ,  F24F11/62 ,  F24F2011/0002 ,  F24F2110/10 ,  F24F2140/40 ,  F24F2203/10 ,  F24F2203/104

Abstract: A method for controlling an air handling unit (1) comprising an ingoing duct (3), an outgoing duct (4), a controlled space (2), at least one heating coil (10) and/or at least one cooling coil (11), and a mixing damper arrangement (6) and/or an enthalpy wheel (5). An intermediate temperature value (T mixer ) in the ingoing duct (3) at a position (12, 13) upstream relative to the heating coil(s) (10) and/or cooling coil(s) (11), and downstream relative to the mixing damper arrangement (6) and/or the enthalpy wheel (5) is measured, and the mixing damper arrangement (6) and/or the enthalpy wheel (5) is/are controlled in accordance with an intermediate temperature setpoint value, and in order to obtain an intermediate temperature value (T mixer ) which is equal to the intermediate temperature setpoint value. A stable control of the air handling unit (1) is obtained.

Abstract translation: 一种用于控制空气处理单元（1）的方法，包括进入管道（3），出口管道（4），受控空间（2），至少一个加热线圈（10）和/或至少一个冷却盘管 11）和混合阻尼器装置（6）和/或焓轮（5）。 在相对于加热线圈（10）和/或冷却盘管（11）的上游位置（12,13）处的入口管道（3）中的中间温度值（Tmixer）和相对于加热线圈 测量混合阻尼器装置（6）和/或焓轮（5），并且根据中间温度设定值控制混合阻尼器装置（6）和/或焓轮（5），并且 以获得等于中间温度设定值的中间温度值（Tmixer）。 获得空气处理单元（1）的稳定控制。

公开(公告)号：WO2016050415A1

公开(公告)日：2016-04-07

申请号：PCT/EP2015/069225

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: 水平传感器被配置为提供指示接收器中存在的制冷剂量的接收器电平，并且级别模型提供了热阻换热器估计值，该估计值表示存在于排热热交换器中的制冷剂的量基于 制冷剂。 从传感器和模型来看，估计来自RVCS系统的制冷剂损失。

公开(公告)号：WO2016034298A1

公开(公告)日：2016-03-10

申请号：PCT/EP2015/064019

申请日：2015-06-23

Applicant: DANFOSS A/S

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

IPC: F25B41/00 ,  F25B41/04

CPC classification number: F25B41/00 ,  F25B41/04 ,  F25B2341/0012 ,  F25B2341/0013 ,  F25B2341/0015 ,  F25B2600/17 ,  F25B2600/2503 ,  F25B2700/195 ,  F25B2700/21163

Abstract: A method for controlling a variable capacity ejector unit (7) arranged in a refrigeration system (1) is disclosed. An ejector control signal for the ejector unit (7) is generated, based on an obtained temperature and an obtained pressure of refrigerant leaving a heat rejecting heat exchanger (3), or on the basis of a high pressure valve control signal for controlling an opening degree of a high pressure valve (6) arranged fluidly in parallel with the ejector unit (7). The ejector control signal indicates whether the capacity of the ejector unit (7) should be increased, decreased or maintained. The capacity of the ejector unit (7) is controlled in accordance with the generated ejector control signal. The power consumption of the refrigeration system (1) is reduced, while the pressure of the refrigerant leaving the heat rejecting heat exchanger (3) is maintained at an acceptable level.

Abstract translation: 公开了一种用于控制布置在制冷系统（1）中的可变容量喷射器单元（7）的方法。 基于获得的温度和获得的离开热排出热交换器（3）的制冷剂的压力，或者基于用于控制开口的高压阀控制信号，产生喷射器单元（7）的喷射器控制信号 与喷射器单元（7）流体平行布置的高压阀（6）的程度。 喷射器控制信号指示喷射器单元（7）的容量是否应当增加，减少或维持。 喷射器单元（7）的容量根据产生的喷射器控制信号进行控制。 制冷系统（1）的功率消耗降低，而离开排热热交换器（3）的制冷剂的压力保持在可接受的水平。

公开(公告)号：WO2022194489A1

公开(公告)日：2022-09-22

申请号：PCT/EP2022/054095

申请日：2022-02-18

Applicant: DANFOSS A/S

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

IPC: F25B41/39

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 pressure difference across the bypass valve (12) is measured or derived, and a mass flow rate of refrigerant through the bypass valve (12) is derived, based at least on the pressure difference across the bypass valve (12), and using a fluid model. A minimum mass flow rate of refrigerant required to operate the receiver compressor (4) is derived, based on a minimum displacement volume of the receiver compressor (4) and using a fluid model taking prevailing operating conditions into account. In the case that the derived mass flow rate of refrigerant through the bypass valve (12) exceeds the derived minimum mass flow rate of refrigerant required to operate the receiver compressor (4), the receiver compressor (4) is started and the bypass valve (12) is closed.

公开(公告)号：WO2018095787A1

公开(公告)日：2018-05-31

申请号：PCT/EP2017/079360

申请日：2017-11-15

Applicant: DANFOSS A/S

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

IPC: F25B49/02

Abstract: A method for controlling a vapour compression system (1) is disclosed, the vapour compression system (1) comprising at least one compressor (2, 16), a heat rejecting heat exchanger (3), a high pressure expansion device (4, 15, 17), a receiver (5), an evaporator expansion device (6), an evaporator (7) and a gas bypass valve (8), arranged in a refrigerant path. It is registered that the gas bypass valve (8) is malfunctioning or saturated, and a pressure value for a pressure prevailing inside the receiver (5) is obtained. Finally, the vapour compression system (1) is controlled in order to control a gaseous refrigerant supply to the receiver (5) to adjust the pressure prevailing inside the receiver (5) to reach a target pressure level.

公开(公告)号：WO2018095785A1

公开(公告)日：2018-05-31

申请号：PCT/EP2017/079358

申请日：2017-11-15

Applicant: DANFOSS A/S

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

IPC: F25B41/06 ,  F25B49/02

Abstract: A method for controlling a vapour compression system (1) is disclosed. A mass flow of refrigerant along a part of the refrigerant path is estimated, based on measurements performed by one or more pressure sensors (10, 12, 13) for measuring a refrigerant pressure at selected positions along the refrigerant path and one or more temperature sensors (11, 4) for measuring a refrigerant temperature at selected positions along the refrigerant path. A refrigerant pressure or a refrigerant temperature at a selected position a pressure sensor (10, 12, 13) or temperature sensor (11, 14) along the refrigerant path is derived, based on the estimated mass flow. The vapour compression system (1) is allowed to continue operating, even if a sensor (10, 11, 12, 13, 14) is malfunctioning or unreliable.

公开(公告)号：WO2017220702A1

公开(公告)日：2017-12-28

申请号：PCT/EP2017/065325

申请日：2017-06-21

Applicant: DANFOSS A/S

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

IPC: F25B31/00

Abstract: A method for controlling a valve arrangement (10) interconnecting at least one oil separator (8) and an oil receiver (9) in a vapour compression system (1) is disclosed. A pressure difference between a pressure prevailing inside the oil separator(s) (8) and a pressure prevailing inside the oil receiver (9) is obtained. Then a duration for an open time of an open/close sequence of the valve arrangement (10) is derived, based on the obtained pressure difference, and the valve arrangement (10) is controlled in accordance with the derived duration of an open time. The supply of oil to the oil receiver (9) can be accurately controlled, regardless of the operating conditions.

Abstract translation: 公开了一种用于控制互连蒸气压缩系统（1）中的至少一个油分离器（8）和油接收器（9）的阀装置（10）的方法。 获得油分离器（8）内主要的压力与油接收器（9）内的压力之间的压力差。 然后基于所获得的压力差导出阀装置（10）的打开/关闭序列的打开时间的持续时间，并且根据导出的打开时间的持续时间来控制阀装置（10）。 无论操作条件如何，均可精确控制机油供应（9）的供油量。