A double-ring type photothermal air energy coupling dryer

Abstract

The invention relates to the technical field of dryers, and specifically discloses a double-loop solar-thermal-air-energy coupled dryer, comprising a closed-loop drying system, an open-loop drying system, an air-energy heat pump system and a solar thermal system; the closed-loop drying system The drying system includes a closed-loop drying chamber and a heat control chamber, the upper end of the closed-loop drying chamber is provided with a first air duct, and the side wall of the closed-loop drying chamber is provided with a first air outlet that communicates with the first air duct; The open-loop drying system includes an open-loop drying chamber and an air heat exchanger. The upper end of the open-loop drying chamber is provided with a second air duct, and the side wall of the open-loop drying chamber is provided with a second air duct that communicates with the second air duct. The second air outlet; the double-ring light-heat-air energy coupling dryer provided by the present invention recovers the heat discharged from the open-loop drying to the closed-loop drying for use, which has the advantages of saving energy and reducing losses, and at the same time It can flexibly select the corresponding drying mode according to the requirements of different items to be dried on the optimal drying and dehydration temperature to meet different drying needs.

Description

technical field [0001] The invention relates to the technical field of dryers, and particularly discloses a double-ring type light-heat-air energy coupling dryer. Background technique [0002] In the classification of heat pump dryers, there are two drying modes: open-loop heat pump drying and closed-loop heat pump drying. In practical applications, it is found that both drying modes have shortcomings. [0003] Open-loop heat pump drying directly discharges the hot and humid air in the drying room to the outside of the drying room through the moisture exhaust fan, and then replenishes natural fresh air, constantly replenishing the fresh air, and a large amount of heat will be taken away with the moisture exhaust air, causing heat of waste. [0004] Closed-loop heat pump drying is to seal the materials to be dried in a drying room with heat insulation and airtightness. Through closed air circulation, the water vapor is condensed on the evaporator and discharged from the dryi...

Images