胡萝卜片微波干燥均匀性研究

干燥均匀性是影响产品干燥质量的重要指标之一。通过分散微波和使物料在微波腔中运动,研究不同情况下胡萝卜切片的干燥均匀性,并开展单因素实验研究微波搅拌器扇片转速、物料转盘转速、微波功率、胡萝卜质量对干燥均匀性的影响。结果发现:增加微波搅拌扇片转速和物料转盘转速都可以降低干燥不均匀性;微波功率增大会加剧干燥不均匀程度,并会影响最终产品质量;相同形状下不同物料质量会影响干燥均匀性。研究结果为改善胡萝卜片微波干燥均匀性提供了操作工艺参数依据。

Study on microwave drying uniformity of carrot slices

Drying uniformity is one of the important indexes affecting the drying quality of product. The drying uniformity of carrot slices was studied by dispersing the microwave and moving the material in the microwave cavity. The speed of the microwave stirrer, the speed of the material turntable, the power of microwave and the weight of carrot on the drying uniformity were studied via single-factor experiments. It was found that the increase of the microwave stirrer speed or the material turntable speed could reduce the nonuniformity. The increase of microwave power has negative effects on the quality of the final product. The material weight also affected the drying uniformity. The results provided a technical reference for the improvement of microwave drying uniformity.