VMH Drying – Even Drying Using Physics Instead of Compressed Air

For drying assemblies, we use the VMH (Venturi Mixed Hot Air) technology invented and patented by kolb. A fan directs a high volumetric flow of recirculated air through a Venturi nozzle. The resulting differential pressure draws in a small amount of superheated air from a special hot-air unit. Both air streams mix and distribute evenly throughout the process chamber.

Adjustable and gentle on components

The drying temperature can be set between approximately 45 °C and 120 °C—suitable for temperature-sensitive components as well as for rapid drying.

Simple design, low maintenance

Compressed air, a compressor, or additional blow-off nozzles are not required; the mixture is created by the pressure differential and airflow. This makes the process robust, low-maintenance, and cost-effective during operation. According to the patent specification, the goal of the development was a drying process that “operates more cost-effectively and energy-efficiently and has a more compact design.”

Used in: AQUBE L, X, XV, and MH series, as well as PSE L and MH series.