【作者】 于昕辰； 丁雪梅； 吴雄英；

【Author】 Yu Xinchen;Ding Xuemei;Wu Xiongying;Donghua University;Xi′an Polytechnic University;Shanghai Customs District P.R.China;

【机构】 东华大学； 西安工程大学； 上海海关；

【摘要】 衣物在滚筒干衣机内的干燥过程伴随着一系列热湿传递现象及物理现象,并在举升筋的带动下不断重复提升、抛落或滑落运动。本文详细介绍了一种用于记录和分析滚筒干衣机内织物运动特征的织物运动轨迹追踪系统。借助高速摄像设备连续拍摄完整滚筒烘干过程中织物运动图像,并通过图像处理,提取织物质心运动轨迹,量化质心运动规律,将运动过程可视化、数字化。研究表明,负载量是影响织物运动的显著性因素,随着负载量的增加织物自由运动区域范围逐渐变小,被提升的高度逐渐降低,进而影响了织物与织物之间、织物与热风之间的充分混合,最终限制了烘干效率并加剧了负载折皱的形成。该项研究可为滚筒内织物运动特征分析及改善干衣机烘干效果提供参考。更多还原

【Abstract】 Clothes drying process in a domestic tumble dryer involves a range of transport phenomenon and physical action. During the tumble-drying process,drying loads may slide,rotate,fall and rub against the drum wall or other textiles. A fabric movement tracking system is used to record and characterize the dynamics of fabric motion in a domestic tumble dryer. First,fabric motion in the entire drying process is recorded by a high-speed camera. Then,the trajectory of fabric centroid is analyzed frame by frame in order to digitalize and visualize the fabric dynamics. The results indicate that fabric motion is significantly influenced by the load size. The range of fabric motion as well as the lifting height of the fabrics in the cross-section of the drum is decreased with the increase of the load size,which restrain the mixing behavior between fabrics and the surrounding air. This contributes negatively to the heat and mass transfer,and aggravates the wrinkling problem. The outcomes can provide references for the analysis of fabric movements in rotary systems and the optimization of dryer performance in the future.更多还原