公开(公告)号：US09791174B2

公开(公告)日：2017-10-17

申请号：US14422380

申请日：2013-07-11

Applicant: Danfoss A/S

Inventor： Roozbeh Izadi-Zamanabadi ,  Hans Joergen Jensen ,  Lars Jensen

IPC: F25B1/00

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.

公开(公告)号：US20150233623A1

公开(公告)日：2015-08-20

申请号：US14422380

申请日：2013-07-11

Applicant: Danfoss A/S

Inventor： Roozbeh Izadi-Zamanabadi ,  Hans Joergen Jensen ,  Lars Jensen

IPC: F25B49/02 ,  F25B1/00

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 vapour 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）和T2（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，并且根据第二控制策略，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。