关键词: 蒸汽发生器, 蒸汽流量, 蒸汽温度, 精准控制

Abstract: Based on the cast aluminum flow channel steam generator, starting from the process of generating saturated steam and reheating it into superheated steam, the heat absorption process of steam is theoretically analyzed, and combined with experiments, the heating efficiency of the flow channel steam generator is approximately 96.9%. By using a 1500 W and 500 W dual steam generator in series, precise control of steam temperature ranging from 100 ℃ to 277 ℃ and flow rate ranging from 0 mL/min to 39 mL/min can be achieved in the steam oven. When precise control of steam quantity and temperature is carried out within this range, the temperature control of the first stage steam generator should increase with the increase of flow rate, and the temperature control of the second stage steam generator should increase with the increase of target temperature. During the transmission of superheated steam, the higher the steam temperature, the greater the temperature decay at the same transmission distance. Adding insulation measures to the pipeline can increase the steam temperature by about 5 ℃, but can not inhibit the speed of temperature decay. When the temperature is around 200 ℃, for every 10cm of transmission, the steam temperature decreases by approximately 10 ℃. The study on the control and influence of steam temperature and flow rate in steam ovens provides a reference for achieving precise control of steam temperature and flow rate in embedded steam ovens.

Key words: Steam generator, Steam flow rate, Steam temperature, Precise control