Control method and device of heat pump drying equipment and storage medium

Abstract

The invention provides a control method and device of heat pump drying equipment and a storage medium, and relates to the technical field of heat pumps. The method comprises the steps that according to a baking control strategy corresponding to a baking processing stage, the output load of a compressor of a heat pump system is controlled to adjust the temperature in a baking room; and according toa fresh air control strategy corresponding to the drying control process, the proportional opening degree of a fresh air valve of a fresh air dehumidification device is controlled so as to adjust thehumidity in the baking room. According to the method, the device and the storage medium, the temperature is adjusted by controlling the load output of the compressor, the humidity is controlled by adjusting the proportional opening degree of the fresh air valve, independent temperature and humidity control and synchronous temperature and humidity adjustment can be achieved, high-precision and intelligent adjustment and control are achieved, the drying technology can be improved, and the product quality is guaranteed.

Description

technical field [0001] The present disclosure relates to the technical field of heat pumps, and in particular to a control method, device and storage medium for heat pump drying equipment. Background technique [0002] Traditional industrial and agricultural drying equipment adopts coal-fired or pure electric heating, which has high energy consumption and high labor costs; heat pump drying equipment has obvious energy-saving effects in heating, can effectively reduce material drying costs, and can realize intelligent control. The process is set to automatically dry, without special personnel on duty; and it can accurately control the temperature, adapt to the load of the drying room, improve the quality of material drying, and improve economic benefits. At present, the traditional heat pump drying equipment adopts sequential adjustment for the temperature and humidity adjustment of the barn, focusing on ensuring the adjustment of the room dry bulb temperature. After the room...

AI Technical Summary

Problems solved by technology

However, for some baked objects, this control method has problems

For example, the baking object is tobacco, and the existing temperature and humidity sequence control does not meet the technological requirements of tobacco drying, especially in the high-temperature drying stage, which will easily cause the cuticle of the tobacco leaf surface to be scorched, hinder the water delivery channel of the leaf vein, and cause The dehydration efficiency is low, and the baking quality is poor; when the wet bulb temperature is controlled in the order of temperature and humidity, due to the drastic fluctuation of the dry bulb temperature during the process adjustment process, the air moisture content in the actual control fluctuates violently, and the direct control of the wet bulb temperature is easy to cause Improper control, resulting in too large or too small humidity adjustment range

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