An air energy heat pump drying device for agricultural products

Abstract

The invention relates to an air energy heat pump agricultural product drying device. The air energy heat pump agricultural product drying device is formed by an air energy heat pump outdoor main engine, a total heat exchanger, a first draught fan, a condenser, a material disc, a drying box shell, barge boards, an air exhaust pipe, an air supply pipe, an air supply static pressure chamber and an air return static pressure chamber. The air energy heat pump outdoor main engine comprises three air quantity adjusting valves and two evaporators, the two evaporators are connected in parallel, and are connected with the condenser in series through a refrigeration agent pipe to form a part of refrigerating cycle; outdoor fresh air treated through the air energy heat pump outdoor main engine exchanges heat with exhausted air in the total heat exchanger to be supplied into the drying box shell; the first draught fan provides power for circular flow of air in the drying box shell; and the barge boards are installed at appropriate positions of the front and the back of the material disc, and needled airflow paths in the material disc are obtained. By means of the air energy heat pump agricultural product drying device, three drying working conditions including single heating, low temperature dehumidification and dehumidification while heating of agricultural products can be achieved, the uniform air supply speed of the material disc can be achieved, and the energy using efficiency and the agricultural product drying uniformity can be improved.

Description

technical field [0001] The invention relates to an air energy heat pump utilization technology, specifically an air energy heat pump agricultural product drying device with energy saving, environmental protection, high efficiency and stable operation, belonging to the fields of air energy heat pump application and agricultural product processing. Background technique [0002] According to statistics from the Ministry of Agriculture, the loss of agricultural products in my country due to drying problems is astonishing, with a loss rate of more than 8%, and the annual grain loss is as high as 50 billion catties. Therefore, the Ministry of Agriculture pointed out in the deployment of key tasks for agricultural product processing in 2015 that it will upgrade agricultural product drying facilities and equipment. The moisture content of agricultural products is high, and the energy consumption required for drying is large. For example, the moisture content of 1Kg of fruits and veg...

AI Technical Summary

Problems solved by technology

There are many types of drying technology. However, in the drying application of various technologies, there are problems of high energy consumption and uniformity of the drying process.

The drying degree of the materials in the drying box is not the same, which causes the turnover of the materials in the drying process to increase the manual workload, and the long drying time increases the energy consumption, which leads to the increase of the processing cost of agricultural products.

Images