公开(公告)号：WO2010025728A1

公开(公告)日：2010-03-11

申请号：PCT/DK2009/000198

申请日：2009-09-04

Applicant: DANFOSS A/S ,  VONSILD, Asbjorn, Leth ,  THYBO, Claus ,  LARSEN, Lars, Finn, Sloth ,  SPANGBERG, Jakob ,  HOYER, Jesper ,  VOGLER, Jes

Inventor： VONSILD, Asbjorn, Leth ,  THYBO, Claus ,  LARSEN, Lars, Finn, Sloth ,  SPANGBERG, Jakob ,  HOYER, Jesper ,  VOGLER, Jes

IPC: F25B41/06 ,  F25B49/00

CPC classification number: F25B41/062 ,  F25B49/005 ,  F25B2600/21 ,  F25B2700/21175

Abstract: A method for calibrating a superheat sensor (5) for a refrigeration system is provided. The method comprises the following steps. Increasing an amount of liquid refrigerant in the evaporator (1), e.g. by increasing an opening degree of the expansion valve (3). Monitoring one or more parameters, e.g. the temperature of refrigerant leaving the evaporator (1), said parameters reflecting a superheat value of the refrigerant. Allowing the value of each of the parameter(s) to decrease. When the value(s) of the monitored parameter(s) reaches a substantially constant level, defining the superheat value corresponding to the constant level to be SH=O. The superheat sensor (5) is then calibrated in accordance with the defined SH=O level. When the parameter(s) reaches the substantially constant level it is an indication that liquid refrigerant is allowed to pass through the evaporator (1), and thereby that the superheat of the refrigerant leaving the evaporator (1) is zero. Calibration can be performed on site, and it is therefore not necessary to calibrate the sensor (5) at the manufacturing facility. Thereby it is no longer required to match calibration information with a specific sensor.

Abstract translation: 提供了一种用于校准用于制冷系统的过热传感器（5）的方法。 该方法包括以下步骤。 增加蒸发器（1）中的液体制冷剂的量，例如 通过增大膨胀阀（3）的开度。 监测一个或多个参数，例如 离开蒸发器（1）的制冷剂的温度，所述参数反映制冷剂的过热值。 允许每个参数的值减少。 当所监视的参数的值达到基本上恒定的水平时，将对应于恒定水平的过热值定义为SH = O。 然后根据定义的SH = O电平校准过热传感器（5）。 当参数达到基本上恒定的水平时，表明允许液体制冷剂通过蒸发器（1），从而使离开蒸发器（1）的制冷剂的过热为零。 校准可以在现场执行，因此无需在生产设备中校准传感器（5）。 因此，不再需要将校准信息与特定传感器相匹配。

公开(公告)号：EP2331891B1

公开(公告)日：2015-10-21

申请号：EP09776194.4

申请日：2009-09-04

Applicant: Danfoss A/S

Inventor： VONSILD, Asbjorn, Leth ,  THYBO, Claus ,  LARSEN, Lars, Finn, Sloth ,  SPANGBERG, Jakob ,  HOYER, Jesper ,  VOGLER, Jes

IPC: F25B41/06 ,  F25B49/00

CPC classification number: F25B41/062 ,  F25B49/005 ,  F25B2600/21 ,  F25B2700/21175

公开(公告)号：EP2331891A1

公开(公告)日：2011-06-15

申请号：EP09776194.4

申请日：2009-09-04

Applicant: Danfoss A/S

Inventor： VONSILD, Asbjorn, Leth ,  THYBO, Claus ,  LARSEN, Lars, Finn, Sloth ,  SPANGBERG, Jakob ,  HOYER, Jesper ,  VOGLER, Jes

IPC: F25B41/06 ,  F25B49/00

CPC classification number: F25B41/062 ,  F25B49/005 ,  F25B2600/21 ,  F25B2700/21175

Abstract: A method for calibrating a superheat sensor (5) for a refrigeration system is provided. The method comprises the following steps. Increasing an amount of liquid refrigerant in the evaporator (1), e.g. by increasing an opening degree of the expansion valve (3). Monitoring one or more parameters, e.g. the temperature of refrigerant leaving the evaporator (1), said parameters reflecting a superheat value of the refrigerant. Allowing the value of each of the parameter(s) to decrease. When the value(s) of the monitored parameter(s) reaches a substantially constant level, defining the superheat value corresponding to the constant level to be SH=O. The superheat sensor (5) is then calibrated in accordance with the defined SH=O level. When the parameter(s) reaches the substantially constant level it is an indication that liquid refrigerant is allowed to pass through the evaporator (1), and thereby that the superheat of the refrigerant leaving the evaporator (1) is zero. Calibration can be performed on site, and it is therefore not necessary to calibrate the sensor (5) at the manufacturing facility. Thereby it is no longer required to match calibration information with a specific sensor.