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酒精灯是制作修复体时必不可少的设备,但灯的火焰受风的影响较大,夏季使用时不能同时使用电风扇,有的还不能开门窗。为此设计制作了酒精灯防风罩。经使用效果良好。一、酒精灯防风罩的构造灯罩用铁皮制成,由内罩、外罩、罩口金属丝架及罩架组成。内罩及外罩上均有一定数量的小圆孔,以利于空气流通。它是根据工程上的渐缩喷管原理而制的。即当气流为亚音速时(气流速度小于音速),进
Alcohol lamp is an indispensable equipment for making prosthesis. However, the flame of lamp is greatly affected by the wind. In the summer, the electric fan can not be used at the same time, and some can not open the window. Design and manufacture of alcohol lamp windshield. By the use of good results. First, the structure of alcohol lamp windshield Lampshade made of metal, the inner cover, cover, cover metal wire frame and cover frame. There are a number of small holes in the inner cover and the outer cover to facilitate air circulation. It is based on the engineering principle of tapered nozzle system. That is, when the airflow is subsonic (airflow speed is less than the speed of sound), into