公开(公告)号：WO2015165937A1

公开(公告)日：2015-11-05

申请号：PCT/EP2015/059292

申请日：2015-04-29

Applicant: DANFOSS A/S

Inventor： PEDERSEN, Rasmus ,  SCHWENSEN, John ,  GREEN, Torben ,  BIEGEL, Benjamin ,  STOUSTRUP, Jakob

IPC: F25D29/00

CPC classification number: F25D29/00 ,  F25B2600/2513 ,  F25D2500/04 ,  F25D2700/16

Abstract: A method for estimating and/or controlling a temperature of foodstuff stored in a refrigerated cavity of a refrigeration system is disclosed. A time constant for the temperature of the foodstuff is established, said time constant being determined based on a time interval between a relatively large change of opening degree of an expansion valve and until variance of the opening degree of the expansion valve decreases to a relatively low variance. The time constant is applied to a low pass filter, said low pass filter providing a relation between the temperature of the foodstuff and the air temperature, and the low pass filter is applied to the monitored air temperature, thereby obtaining an estimate for the temperature of the foodstuff stored in the refrigerated cavity.

Abstract translation: 公开了一种用于估计和/或控制存储在制冷系统的冷藏空腔中的食品的温度的方法。 确定食品温度的时间常数，所述时间常数基于膨胀阀的开度相对大的变化与膨胀阀的开度的变化之间的时间间隔确定为相对较低 方差。 将时间常数应用于低通滤波器，所述低通滤波器提供食品的温度与空气温度之间的关系，并且将低通滤波器应用于监测的空气温度，从而获得对 存储在冷藏腔中的食物。