德国 LEW 公司根据研究成果,按离心沉积原理开发成功了新型机械分离格栅,用于铁路机车、动车的电子装置冷却风道和牵引电动机通风机的进气装置。与原来的喷嘴式进气格栅相比,大大提高了对灰尘和水滴的分离效率(分别为60～70%和90%),并可防止进雪,本身也不会堵塞,因而大大提高了电子装置和牵引电动机的工作可靠性。本文介绍了这种格栅的工作原理、格栅形状的优化设计、模型试验和装车运行试验的结果和实际应用情况。 According to the research result, German LEW company succeeded in developing a new mechanical separation grille according to the principle of centrifugal sedimentation, which is used for air intake devices for railway locomotives, electric vehicle cooling air ducts and traction motor ventilators. Compared with the original nozzle grille, it greatly improves the separation efficiency of dust and water droplets (60-70% and 90% respectively), and can prevent the snow from entering, and can not block itself, thereby greatly improving Operating reliability of electronic devices and traction motors. This article describes the working principle of this grid, the optimal design of the grid shape, the results of the model test and the loading test, and the actual application.