Air cooler

fluidized bed

JÖST vibrating fluid bed coolers for bulk materials use convection to transfer heat to the cooling element, i.e. via direct heat transfer, so the heat transfer medium comes directly into contact with the product. Product is moved in the cooler using the micro throwing movement, a well-known method in vibration feeding technology that can be individually set up for each application and machine type through the adjustment of swing, frequency and articulation (throw angle). Heat transfer is typically done using ambient air, but tempered air or conditioned process air can also be used for special applications. Depending on the application, coolers can be divided into different cooling zones. They can also be set up for fresh-air mode or exhaust-air and partial-air recirculation. Models with resonating and stationary exhaust air hoods are also available. Vibrating fluid bed coolers can be delivered in a variety of materials including normal or stainless steels, or a combination thereof. The product to be cooled is introduced by a fluidization plate with ambient, tempered or conditioned cooling air. The plate speed can be selected specifically for each product, resulting in the fluidization of the product and efficient circulation of the individual product particles. The special design of the air distribution chamber(s) below the fluidization plate, with the fluidization plate above it, ensures uniform distribution of air and airflow for the product layer on the plate, even with changing layer thicknesses. This uniformity of airflow leads to equally uniform cooling results.