Development of snow shooter and a method to extend snow-transport distance through tube with high-speed air flow.

一种将雪吹入管道的喷雪器已经制作完成，雪通过高速气流输送到管道中。喷射器由圆柱形外壳、旋转板和螺旋钻组成，以最大限度地减少气流速度的下降。雪板将积雪送入管子，螺旋钻机将雪块碾磨成均匀较小的尺寸，以避免管子中堆积的雪块。枪手在室外进行了测试，其特性与预期基本一致。对管道中的积雪块进行了录像，并对这些积雪块的速度和轨迹进行了分析。弯管处的速度暂时下降，这种下降会使堆叠更容易发生。较短长度的弯管似乎有一个减小幅度最小的曲率半径。并对结点处的积雪行为进行了分析，认为鼓风机是主动力机组使管内空气高速流动的最佳选择，高压空气发生器是最好的助推器。增加助推器比增加风机功率更有利于延长积雪的输送长度。管子、风机和压缩机的形成/S、射手/S是高速气流输雪的基本单元。通过将基本单元相互连接起来，一种可以管理房屋密集地区街道或屋顶积雪的除雪机将投入实用。

A snow shooter blowing snow into the tubes of which snow is transported with high-speed air flow has been made. The shooter is consisted of a cylindrical casing, rotating plates and a auger, to minimize decreasing of the speed of the air flow. The plates are to send snow into the tube, and the auger is to grind snow blocks into uniformaly smaller size to avoid stacks of snow blocks in the tube. The shooter was tested out of doors, and the characteristics were almost as expected.Snow blocks in the tubes were video-taped, and both the velocity and the locus of these blocks were analyzed. The velocity at the bending tube decreased temporarily, and this decreasing would make the stacks be easy to happen. The bending tube in short length seemed to have a radius of curvature minimizing the decreasing. Also behaviors of snow blocks at junctions were analyzed.An air-blower is the best for main power unit to make high-speed air flow in the tube, and high-pressured air generator like an air compressor best for booster. For extending the length of snow transport, adding the boosters is better than increasing the power of an air-blower.The formation of the tube, an air-blower and a compressor/s and the shooter/s is a basic unit for snow transport with high-speed air flow. By joining the basic units with each others, a snow removal machine, which can manage snow on streets or roofs in the area crowded with houses, will be for practical use.