In Big Discount Hot Air Circulating Drying Oven for Fruit 50/60HZ

A hot air circulation oven is an intermittent drying device based on forced convection heat transfer. During operation, the circulation fan draws air into the duct, where it is heated by electric heating elements, steam heat exchangers, or other heat sources to form hot air. This hot air is then evenly distributed into the interior chamber of the oven through the ducts. Inside the chamber, the hot air fully contacts the surface of the material, transferring heat and causing moisture or solvent in the material to evaporate. A portion of the moist air is discharged outside the oven through exhaust ports, while another portion recirculates back into the duct for reheating, creating a continuous cycle that reduces heat loss and improves thermal efficiency.

The oven typically employs either horizontal or vertical airflow, combined with guide plates and air distribution plates to ensure more uniform temperature distribution within the chamber, preventing localized overheating or uneven drying. Temperature is continuously monitored by sensors, and the control system automatically adjusts the heating power according to preset values to achieve constant-temperature drying. Materials are usually placed on trays, carts, or shelves, making this equipment ideal for small-batch, multi-product processes requiring high temperature uniformity, such as drying, curing, tempering, and dehumidification.