Near Equilibrium Heating™

ETS optimizes thermal energy transfer to electronic assemblies through its unique combination of Convection and Infra-red heat delivery systems. Infra-red "boosters" provide quick temperature acceleration to high thermal mass components or ground planes while Recirculating Hot Air (RHA) blowers maintain even temperature to all areas of the assembly. Low mass coil heating elements provide quick response for varying production loads ensuring process repeatability. Recycled and Cascaded air is drawn from the low thermal mass process cavity with tangential blower wheels running the full width of the process cavity for even airflow. The air is heated and forced through nozzles onto the product. Columnized air retains its direction and velocity resulting in maximum impingement velocity on the product, high energy transfer and Near Equilibrium Heating™. Air is cascaded from one zone to the next reducing energy consumption.

The illustration above demonstrates sytem airflow as it is drawn (recycled) from the process cavity by the tangential blower wheel, passes across the low mass coil heating element, pressurizes in the heat plenum and impinges onto the product via the impingement nozzles. Infra-red heat boosters are positioned between the rows of impingement nozzles.