Composite closed tobacco baking system

A composite closed tobacco baking system comprises a baking room, a dry and wet bulb thermometer, a heat pump system and a controller. The dry and wet bulb thermometer and the heat pump system are installed in the curing barn, the controller determines the heat pump system to execute different working modes according to temperature signals and humidity signals of the dry and wet bulb thermometer, the different working modes can be switched according to the requirements for the dry and wet bulb temperature in the curing barn at different stages of tobacco curing, and the defect of a single mode is overcome; the method is completed in a fully-closed mode, heat loss caused by hot and humid air emission is reduced, the energy efficiency of the heat pump for baking is improved, and the effects of energy conservation and emission reduction are achieved. 一种复合密闭烟草烘烤系统，包括烤房、干湿球温度计、热泵系统和控制器；干湿球温度计、热泵系统安装在烤房内，控制器根据干湿球温度计的温度信号与湿度信号，确定热泵系统执行不同工作模式，可针对烟草烘烤不同阶段对烤房内干湿球温度的要求进行不同工作模式的切换，克服单一模式的缺陷，且在全密闭模式下完成，减少热湿空气排放带来的热量损失，提高烘