Dehumidification device in small test curing barn and control method of dehumidification device

Abstract

The invention discloses a dehumidification device in a small test curing barn and a control method of the dehumidification device. The device comprises a small curing barn, a heat pump unit, an inner dehumidification device and a controller, wherein the small curing barn comprises a tobacco loading chamber, a heating chamber, a partition plate, an air return port, an air inlet, a circulating fan, a dry bulb thermometer and a wet bulb thermometer; the heat pump unit comprises a heat exchanger, a dehumidification evaporator and a condenser, and the dehumidification evaporator is arranged close to the air return port; and the inner dehumidification device comprises a hot air exhaust valve and an electric louver, the electric louver is arranged on the wall of the heating chamber and located above the circulating fan, and the hot air exhaust valve is arranged on the wall of the heating chamber and close to the air inlet. The electric louver and the hot air exhaust valve are started when the heat pump unit is in a dehumidification working condition, and a small-range exhaust route in the heat pump unit is formed through fresh air inlet linkage, so that heat generated by the condenser is exhausted outwards in time through the hot air exhaust valve, heat entering the tobacco loading chamber is reduced, the baking temperature in the tobacco loading chamber is more stable, and therefore the tobacco baking quality is improved.

Description

technical field [0001] The invention relates to a dehumidification device in a small test barn and a control method thereof, belonging to the technical field of barn dehumidification. Background technique [0002] The current mature heat pump technology is widely used in tobacco leaf curing, mainly in small test barns, which has multiple advantages such as no pollution, high energy efficiency, and precise temperature control. The heat pump system is mainly composed of compressor, heat exchanger, dehumidification evaporator, condenser, axial fan, liquid storage tank, filter, electronic expansion valve and controller. After the power is turned on, the heat exchange fan starts to run, the outdoor air is exchanged through the heat exchanger, and the cooled air is discharged from the system by the fan. Compress the low-pressure working medium gas into high-temperature and high-pressure gas and send it to the condenser. After being heated by the working medium, it is sent to the ...

AI Technical Summary

Problems solved by technology

[0003] However, due to the complex baking process of tobacco leaves, the requirements for temperature and humidity are relatively high, and the precise control of temperature fluctuates greatly under the condition of internal dehumidification in the open-close all-in-one machine or closed heat pump system, especially in the small test barn , due to the small volume of smoke, the change pointer is particularly obvious, the temperature control accuracy cannot meet the requirements, and it is impossible to achieve stable temperature and dehumidification

Images