公开(公告)号：EP2888540B1

公开(公告)日：2016-04-27

申请号：EP13740205.3

申请日：2013-07-10

Applicant: Danfoss A/S

Inventor： IZADI-ZAMANABADI, Roozbeh ,  ANDERSEN, Casper Lindholdt

IPC: F25B41/06 ,  F25B49/02 ,  G01K15/00

CPC classification number: G01K15/005 ,  F25B49/02 ,  F25B2600/2513 ,  F25B2700/21174 ,  F25B2700/21175

Abstract: A method for calibrating a temperature sensor arranged in a vapor compression system is disclosed. The opening degree of an expansion device is alternatingly increased and decreased. Simultaneously a temperature of refrigerant entering the evaporator and a temperature of refrigerant leaving the evaporator are monitored. For each cycle of the opening degree of the expansion device, a maximum temperature, T1, max, of refrigerant entering the evaporator, and a minimum temperature, T2, min, of refrigerant leaving the evaporator are registered. A calibration value, ΔT1, is calculated as ΔT1=C−(T2, min−T1, max) for each cycle, and a maximum calibration value, among the calculated values is selected. Finally, temperature measurements performed by the first temperature sensor are adjusted by an amount defined by ΔT1, max.

公开(公告)号：EP2992276A1

公开(公告)日：2016-03-09

申请号：EP14721535.4

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: 本发明提供一种用于控制运行蒸汽压缩系统（1）的方法，该蒸汽压缩系统（1）包括两个或更多个制冷实体,:如显示例。 表示基准功率消耗的信号被接收，并且相比于所述蒸汽压缩系统（1）的实际功率消耗。 基于所述比较，局部控制器（3）计算用于相应致冷实体设定点温度，以便获得一个功率消耗所有其等于基准功率消耗。 每个制冷实体在雅舞蹈控制与所计算的设定点温度。

公开(公告)号：EP2888541A1

公开(公告)日：2015-07-01

申请号：EP13741966.9

申请日：2013-07-11

Applicant: Danfoss A/S

Inventor： IZADI-ZAMANABADI, Roozbeh ,  JENSEN, Hans Joergen ,  JENSEN, Lars

IPC: F25B49/02

CPC classification number: F25B1/00 ,  F25B49/02 ,  F25B2345/003 ,  F25B2500/26 ,  F25B2600/05 ,  F25B2600/21 ,  F25B2600/2513 ,  F25B2700/21172 ,  F25B2700/21173 ,  F25B2700/21174 ,  F25B2700/21175

Abstract: A method for controlling a vapor compression system during start-up is disclosed. The rate of change, ΔT1, of the temperature of refrigerant entering the evaporator, and the rate of change, ΔT2, of the temperature of refrigerant leaving the evaporator are compared. Based on the comparing step, a refrigerant filling state of the evaporator is determined. The opening degree of the expansion device is then controlled according to a first control strategy in the case that it is determined that the evaporator is full or almost full, and according to a second control strategy in the case that it is determined that the evaporator is not full. Thereby it is ensured that a maximum filling degree of the evaporator is quickly reached, without risking that liquid refrigerant passes through the evaporator.

Abstract translation: 公开了一种在起动期间控制蒸汽压缩系统的方法。 比较了进入蒸发器的制冷剂的温度变化率和温度变化率T1，以及离开蒸发器的制冷剂温度的变化率（Dgr; T2）。 基于比较步骤，确定蒸发器的制冷剂填充状态。 在确定蒸发器已满或已满的情况下，根据第一控制策略来控制膨胀装置的开度，根据第二控制策略，在确定蒸发器为 不满 从而确保快速达到蒸发器的最大填充度，而不会使液体制冷剂通过蒸发器。

公开(公告)号：EP2630422A1

公开(公告)日：2013-08-28

申请号：EP11776069.4

申请日：2011-10-19

Applicant: Danfoss A/S

Inventor： IZADI-ZAMANABADI, Roozbeh ,  LARSEN, Lars, Finn, Sloth ,  THYBO, Claus

IPC: F25B41/06

CPC classification number: F25B49/02 ,  F25B41/062 ,  F25B2500/19 ,  F25B2600/21

Abstract: A method for controlling a supply of refrigerant to an evaporator (5) of a vapor compression system (1), such as a refrigeration system, an air condition system or a heat pump, is disclosed. The vapor compression system (1) comprises an evaporator (5), a compressor (2), a condenser (3) and an expansion device (4) arranged in a refrigerant circuit. The method comprises the steps of: Actuating a component, such as an expansion valve (4), a fan or a compressor (2), of the vapor compression system (1) in such a manner that a dry zone in the evaporator (5) is changed; measuring a temperature signal representing a temperature of refrigerant leaving the evaporator (5); analyzing the measured temperature signal, e.g. including deriving a rate of change signal; determining a temperature value where a gain of a transfer function between the actuated component and the measured temperature drops from a maximum value to a minimum value, in a decreasing temperature direction; defining the determined temperature value as corresponding to a zero superheat (SH=0) value of refrigerant leaving the evaporator (5), and controlling a supply of refrigerant to the evaporator (5) in accordance with the defined SH=0 temperature value, and on the basis of the measured temperature signal. The method steps may be repeated at certain time intervals in order to provide updated determinations of the SH=0 temperature value. The method allows the SH=0 point to be determined purely on the basis of the measured temperature signal. Subsequently, the supply of refrigerant to the evaporator (5) can be controlled purely on the basis of the measured temperature signal.

Abstract translation: 公开了一种用于控制向蒸气压缩系统（1）的蒸发器（5）供应制冷剂的方法，例如制冷系统，空调系统或热泵。 蒸气压缩系统（1）包括布置在制冷剂回路中的蒸发器（5），压缩机（2），冷凝器（3）和膨胀装置（4）。 该方法包括以下步骤：以蒸发器（5）中的干燥区域的方式驱动蒸气压缩系统（1）的部件，例如膨胀阀（4），风扇或压缩机（2） ）改变了 测量表示离开蒸发器（5）的制冷剂的温度的温度信号; 分析测量的温度信号，例如 包括导出变化率信号; 确定温度值，其中所述致动部件和所测量的温度之间的传递函数的增益在温度降低方向上从最大值下降到最小值; 将所确定的温度值定义为对应于离开蒸发器（5）的制冷剂的零过热（SH = 0）值，以及根据所定义的SH = 0温度值控制向蒸发器（5）供应的制冷剂;以及 在测量温度信号的基础上。 可以以特定时间间隔重复方法步骤，以便提供更新的SH = 0温度值的确定。 该方法允许基于测量的温度信号纯粹地确定SH = 0点。 随后，可以纯粹基于测量的温度信号来控制向蒸发器（5）供应制冷剂。