在某些蒸馏、升华、干燥及热处理的过程中,在往需要直接观察过程进行中的现象和变化,为此我所研制了半导体玻璃管炉。该炉采用喷涂热解法在玻璃管壁上沉积一层高电导,高透光的半导体涂层作为加热器。该炉可在室温至250℃范围内使用,控制精度±1℃,最高使用温度为300℃,涂层单层玻璃管透明度>80％,五分钟即可升到250℃,无热滞后,可节能10—15％,使用寿命可达700h以 In some distillation, sublimation, drying and heat treatment process, the need for direct observation of the phenomenon and changes in the process, for which I have developed a semiconductor glass tube furnace. The furnace using spray pyrolysis method in the glass wall deposition of a layer of high conductivity, high light transmittance of the semiconductor coating as a heater. The furnace can be used at room temperature to 250 ℃, the control accuracy of ± 1 ℃, the maximum temperature of 300 ℃, the transparency of the coating single glass tube> 80%, five minutes to rise to 250 ℃, no thermal hysteresis, Energy-saving 10-15%, the service life of up to 700h