SELF-ADAPTIVE AND SELF-REGULATING HEAT PUMP-BASED HOT BLAST STOVE CONTROL SYSTEM AND CONTROL METHOD THEREOF

摘要

A self-adaptive and self-regulating heat pump-based hot blast stove control system and a control method thereof may be used for drying grains. The control system comprises a fresh air processing unit, a hot drying air preparation unit, and an after-drying residual hot air processing unit. A temperature sensor, a humidity sensor, and a heat exchanger are provided in the fresh air processing unit. The heat exchanger is adjusted to an adaptive operating mode according to the detected real-time temperature and humidity, and primary fresh air that meets system requirements is made. Incoming air for hot air preparation and residual hot air discharged from a drying tower are formed in the hot drying air preparation unit. Incoming air for heat treatment and exhaust air after the heat treatment are formed in the residual hot air processing unit. The incoming air for heat treatment consists of two parts, one part is the primary fresh air that is made by the fresh air processing unit and meets the system requirements, and the other part is the residual hot air discharged from the drying tower. The exhaust air after the heat treatment is transported in two parts, one part is discharged by means of an exhaust pipe, and the other part is transported for hot air preparation by the hot drying air preparation unit.