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：WO2022053461A1

公开(公告)日：2022-03-17

申请号：PCT/EP2021/074605

申请日：2021-09-07

Applicant: DANFOSS A/S

Inventor： ANDREASEN, Glenn ,  IZADI-ZAMANABADI, Roozbeh

IPC: F25B49/02 ,  F25B9/00 ,  F25B5/02

Abstract: A method for controlling a vapour compression system (1) is disclosed, the vapour compression system (1) comprising an ambient temperature sensor (8) arranged to measure an ambient temperature. A time period during which the ambient temperature sensor (8) is unexposed to solar heating is selected. During the selected time period, measurements of the ambient temperature are obtained by means of the ambient temperature sensor (8), and measurements of at least one further parameter related to the vapour compression system (1) are obtained, while operating the vapour compression system (1). Model parameters for a model of at least a part of the vapour compression system (1) are derived, based on the obtained measurements, the model providing correlation between the ambient temperature and the at least one further parameter. Subsequently, the vapour compression system (1) is operated based on measurements of the at least one further parameter and based on ambient temperatures derived by means of the model including the derived model parameters.

公开(公告)号：WO2015106906A1

公开(公告)日：2015-07-23

申请号：PCT/EP2014/077904

申请日：2014-12-16

Applicant: DANFOSS A/S

Inventor： IZADI-ZAMANABADI, Roozbeh

IPC: F25B49/02

CPC classification number: F25B49/02 ,  F25B2500/19 ,  F25B2500/28 ,  F25B2600/21 ,  F25B2600/2513 ,  F25B2700/21171

Abstract: A method for controlling a supply of refrigerant to an evaporator (2) of a vapour compression system (1), such as a refrigeration system, an air condition system or a heat pump. The opening degree of the expansion valve (3) is controlled on the basis of an air temperature, T air , of air flowing across the evaporator (2), and in order to reach a reference air temperature, T air, ref . The opening degree is set to the calculated opening degree, overlaid with a perturbation signal. A temperature signal, S 2 , representing a temperature of refrigerant leaving the evaporator (2) is monitored and analysed. In the case that the analysis reveals that a dry zone of the evaporator (2) is approaching a minimum length, the opening degree of the expansion valve (3) is decreased. This provides a safety mechanism which ensures that liquid refrigerant is prevented from passing through the evaporator (2).

Abstract translation: 一种用于控制向诸如制冷系统，空调系统或热泵的蒸气压缩系统（1）的蒸发器（2）供应制冷剂的方法。 基于流过蒸发器（2）的空气的空气温度Tair控制膨胀阀（3）的开度，并且为了达到参考空气温度Tair，参考。 开度设定为计算开度，用扰动信号重叠。 监测并分析表示离开蒸发器（2）的制冷剂的温度的温度信号S2。 在分析显示蒸发器（2）的干燥区域接近最小长度的情况下，膨胀阀（3）的开度减小。 这提供了一种确保液体制冷剂不被通过蒸发器（2）的安全机构。

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：WO2019243106A1

公开(公告)日：2019-12-26

申请号：PCT/EP2019/065120

申请日：2019-06-11

Applicant: DANFOSS A/S

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

IPC: F25B49/02 ,  F25B47/02

Abstract: A method for terminating defrosting of an evaporator (104) 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). When ice is accumulated on the evaporator (104), the vapour compression system (100) operates in a defrosting mode. At least two temperature sensors (306, 307) monitor an evaporator inlet temperature, T e,in, at a hot gas inlet (304) of the evaporator (104) and an evaporator outlet temperature, T e,out, at a hot gas outlet (305) of the evaporator (104). A difference between T e,in and T e,ou ,is monitored and defrosting is terminated when the rate of change of the difference between T e,in and T e,out approaches zero.

公开(公告)号：WO2017121721A1

公开(公告)日：2017-07-20

申请号：PCT/EP2017/050397

申请日：2017-01-10

Applicant: DANFOSS A/S

Inventor： IZADI-ZAMANABADI, Roozbeh

IPC: F25B49/00 ,  F25B49/02

CPC classification number: F25B49/005 ,  F25B49/02 ,  F25B2500/19 ,  F25B2600/21 ,  F25B2600/23 ,  F25B2600/2513 ,  F25B2700/2106 ,  F25B2700/21175

Abstract: A method for controlling a supply of refrigerant to an evaporator (2) of a vapour compression system (1), such as a refrigeration system, an air condition system or a heat pump. During normal operation, the opening degree of the expansion valve (3) is controlled on the basis of an air temperature, T air , of air flowing across the evaporator (2) and/or on the basis of superheat of refrigerant leaving the evaporator (2). In the case that at least one sensor (5, 6, 23, 24) used for obtaining T air or the superheat is malfunctioning, operation of the vapour compression system (1) is switched to a contingency mode. A reference temperature, T out, ref , is calculated, based on previously obtained values of a temperature, T out , of refrigerant leaving the evaporator (2), during a predefined previous time interval, and subsequently the opening degree of the expansion valve (3) is controlled on the basis of the obtained temperature, T out , and in order to reach the calculated reference temperature, T out, ref , of the refrigerant leaving the evaporator (2). Efficient operation of the vapour compression system (1) is obtained, allowing changes in refrigeration load to be taken into account.

Abstract translation: 控制向蒸汽压缩系统（1）的蒸发器（2）供应制冷剂的方法，例如制冷系统，空调系统或热泵。 在正常操作期间，膨胀阀（3）的开度基于流经蒸发器（2）的空气的空气温度T air和/或基于 离开蒸发器（2）的制冷剂的过热。 在的情况下用于获得T个<子>空气或过热发生故障，蒸汽压缩系统（1）的操作被切换到一个应急模式的至少一个传感器（5,6，23，24） 。 基于之前获得的离开蒸发器（2）的制冷剂的温度T out的值，在预定义的预定温度T out期间计算参考温度T out，ref， 之前的时间间隔，并且随后根据所获得的温度T out来控制膨胀阀3的开度，并且为了达到所计算的参考温度T min， （2）的制冷剂的出口（ref）。 蒸汽压缩系统（1）的高效运行得以实现，可以考虑到制冷负载的变化。

公开(公告)号：WO2019243561A1

公开(公告)日：2019-12-26

申请号：PCT/EP2019/066443

申请日：2019-06-21

Applicant: DANFOSS A/S

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

IPC: F25B47/02

Abstract: A method for terminating defrosting of an evaporator (104) 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). When ice is accumulated on the evaporator (104), the vapour compression system (100) operates in a defrosting mode. At least one temperature sensor (305) monitors a temperature T air , of air leaving the evaporator (104). A rate of change of T air is monitored and defrosting is terminated when the rate of change of the temperature, T air , approaches zero.

公开(公告)号：WO2016091420A1

公开(公告)日：2016-06-16

申请号：PCT/EP2015/073232

申请日：2015-10-08

Applicant: DANFOSS A/S

Inventor： IZADI-ZAMANABADI, Roozbeh

IPC: F25B49/02

CPC classification number: F25B41/062 ,  F25B49/02 ,  F25B2500/19 ,  F25B2500/26 ,  F25B2600/2513 ,  F25B2700/21173 ,  F25B2700/21175

Abstract: A method for controlling a supply of refrigerant to an evaporator (2) of a vapour compression system (1) is disclosed. During a system identification phase an opening degree (12) of the expansion valve (3) is alternatingly increased and decreased, and a maximum temperature difference, (S 4 -S 2 ) max , between temperature, S 4 , of air flowing away from the evaporator (2) and temperature, S 2 , of refrigerant leaving the evaporator (2) is determined. During normal operation, the supply of refrigerant to the evaporator (2) is controlled by calculating a reference temperature, S 2,ref , based on the monitored temperature, S 4 , and the maximum temperature difference, (S 4 -S 2 ) max , determined during the system identification phase. The supply of refrigerant to the evaporator (2) is controlled in order to obtain a temperature, S 2 , of refrigerant leaving the evaporator (2) which is substantially equal to the calculated reference temperature, S 2,ref .

Abstract translation: 公开了一种用于控制向蒸汽压缩系统（1）的蒸发器（2）供应制冷剂的方法。 在系统识别阶段期间，膨胀阀（3）的开度（12）交替地增加和减小，并且在从蒸发器流出的空气的温度（S4）之间的最大温差（S4-S2）max 2）并且确定离开蒸发器（2）的制冷剂的温度S2。 在正常操作期间，通过基于所监视的温度S4和最大温差（S4-S2）max计算基准温度S2，ref来控制向蒸发器（2）的供应。 系统识别阶段 控制向蒸发器（2）供应制冷剂以便获得离开蒸发器（2）的制冷剂的温度S2基本上等于所计算的参考温度S2，ref。

公开(公告)号：WO2016066298A1

公开(公告)日：2016-05-06

申请号：PCT/EP2015/069276

申请日：2015-08-21

Applicant: DANFOSS A/S

Inventor： SHAFIEI, Seyed Ehsan ,  IZADI-ZAMANABADI, Roozbeh

IPC: F25D31/00 ,  G01K7/42

CPC classification number: G01K7/427 ,  F25B2500/19 ,  F25B2700/2106 ,  F25D29/00 ,  F25D2700/16

Abstract: A method for estimating a thermal capacity of foodstuff stored in a refrigerated volume of a refrigeration system. A thermal capacity of air inside the refrigerated volume is estimated, e.g. a time constant. Then the setpoint temperature for the air inside the refrigerated volume is changed, and the air temperature inside the refrigerated volume is monitored. A thermal capacity of the foodstuff stored in the refrigerated volume, e.g. a time constant, is estimated, based on the monitored air temperature and on the estimated thermal capacity of the air inside the refrigerated volume. The refrigeration system is controlled at least partly on the basis of the estimated thermal capacity of the foodstuff stored in the refrigerated volume.

Abstract translation: 一种用于估计存储在制冷系统的冷藏容积中的食品的热容量的方法。 估计冷藏容积内的空气的热容量，例如， 时间常数。 然后，冷藏容积内的空气的设定温度变化，并且监视冷藏容积内的空气温度。 存储在冷藏容积中的食品的热容量，例如 基于所监测的空气温度和冷藏容积内的空气的估计热容量来估计时间常数。 制冷系统至少部分地基于储存在冷藏容积中的食品的估计热容量来控制。

公开(公告)号：WO2014177957A1

公开(公告)日：2014-11-06

申请号：PCT/IB2014/060641

申请日：2014-04-11

Applicant: DANFOSS A/S

Inventor： IZADI-ZAMANABADI, Roozbeh ,  EHSAN SHAFIEI, Seyed

IPC: F25B5/00 ,  F25B49/02

CPC classification number: F25B49/02 ,  F25B5/00 ,  F25B2700/15

Abstract: A method for controlling operation of a vapour compression system (1) is provided, the vapour compression system (1) comprising two or more refrigeration entities, such as display cases. A signal representing a reference power consumption is received and compared to an actual power consumption of the vapour compression system (1). Based on the comparison, local controllers (3) calculate a setpoint temperature for a corresponding refrigeration entity, in order to obtain a power consumption which is equal to the reference power consumption. Each refrigeration entity is controlled in accordance with the calculated setpoint temperatures.

Abstract translation: 提供了一种用于控制蒸气压缩系统（1）的操作的方法，所述蒸气压缩系统（1）包括两个或多个制冷实体，诸如显示器壳体。 接收表示参考功率消耗的信号并与蒸气压缩系统（1）的实际功率消耗进行比较。 基于比较，本地控制器（3）计算相应制冷机构的设定点温度，以获得等于参考功率消耗的功耗。 每个制冷实体根据计算的设定点温度进行控制。