以碳基发热涂层为热源的新型炒茶机

A new tea roasting machine with carbon-based coating as heating source

目的:解决传统炒茶装置加热不均、热损失及功耗高等问题。方法:采用碳基高温发热涂层新材料,在微晶玻璃炒茶器皿底部通过喷涂的方式,形成面状加热源,设计了集炒茶、杀青和传送为一体的新型炒茶机;基于STM32设计了温度探测、温度控制及显示、炒茶揉茶切换等电路模块。结果:新型炒茶机的整机功耗最大1 kW,整机尺寸350 mm×150 mm×280 mm,温控范围20~400℃,温控精度±1℃;解决了传统手工制作茶叶过程中炒茶温控不精确、揉茶工序力度不可控的缺点。结论:将杀青和揉茶两道工序结合起来,能够实现“三杀三揉”工艺的自主动作切换青茶制作过程的自动化。

Objective:Solve the problems of uneven heating,heat loss and high power consumption of traditional tea frying device.Methods:Using carbon based high temperature heating coating material,a surface heating source was formed at the bottom of the glass-ceramic tea frying vessel by spraying.The corresponding tea roasting device,green removing device and conveying device were innovatively designed.Based on STM32,the circuit modules of temperature detection,temperature control and display,stir frying and rubbing tea switching were designed.Results:The maximum power consumption of the whole machine was 3 kW,and the size of the whole machine was 350 mm×150 mm×280 mm.The temperature control range was 20~400℃,and the temperature control accuracy was±1℃.The shortcomings of the traditional manual tea making process such as temperature control inaccurate and tea kneading process uncontrollable were solved.Conclusion:The machine combines the two processes of killing green tea and kneading tea,which can realize the independent action switching of"three killing and three kneading"process,and realizes the automation of green tea production process.