冷藏传感器位置对风冷冰箱温度均匀性的影响

Influences of refrigerated sensor position on the temperature uniformity of frost-free refrigerator

温度均匀性是评价冰箱优劣的关键指标,对食物的保鲜和保存十分重要,而影响冰箱温度均匀性的因素有多种,如发泡效果、风道设计和搁架长度等。因此,以冷藏温度传感器位置为变量,通过控制变量法对温度偏差、耗电量等参数进行试验研究,结果表明:冷藏传感器位于间室温度偏差较大的位置有利于冷藏室温度均匀性的提升。其中,冷藏室第一层温度偏差最大,原冷藏传感器位置下的第四层温度偏差最小;将传感器位置调整至第一层距顶部7.5 cm处,较原传感器位置相比,16℃下,冷藏间室最大温差由11.6℃下降至5.8℃;32℃下,最大温差由15.7℃下降至8.9℃。此外,调整冷藏传感器位置后,冷藏室制冷更频繁,而冰箱各间室的平均温度与耗电量变化不明显。

Temperature uniformity is a key indicator of refrigerators.Also,it is vital to preservation and store of food.There are many factors affecting the temperature uniformity of refrigerators,such as foaming effects,air-duct design,and shelf length.Therefore,the position of refrigerated temperature was taken as a single variable to investigate the relationship between parameters such as the temperature deviation and power consumption.The results show that the refrigerated sensor,located in the position where has large temperature deviation,is benefit to improve the temperature uniformity of the freshfood compartment.Among them,the first layer of the fresh-food compartment is the largest temperature deviation,the fourth layer under the position of the original refrigeration sensor is the smallest temperature deviation;when the sensor position is adjusted to the top 7.5 cm of the first layer,we compare to the primary position of the refrigerated sensor.Then we found that the maximum temperature deviation of the fresh-food compartment was dropped from 11.6℃to 5.8℃at the air temperature of 16℃,and the maximum temperature deviation was dropped from 15.7℃to 8.9℃at the air temperature of 32℃.In addition,after adjusting the position of the refrigerator sensor,the fresh-food compartment is cooled more frequently,but the average temperature and power consumption of each compartment does not change significantly.