ROTATION EXTRACTION

This extraction approach can be applied to a wide range of applications, for instance in extracting exhaust air flows at high impulse rates such as those arising, for example, in the cutting and grinding of materials as well as during injection moulding processes.

An important application is the extraction of emissions at workplaces where employees need to be protected against exposure to toxic vapours. One of many additional potential applications is the use of a rotation extraction system for extracting emitted engine exhaust gases on vehicle test stands.

The necessary barometric underpressure is formed by installing suction apertures within a cylindrically shaped hood that is open to one side at both ends. These suction apertures will form two underpressure fields with very intense air rotation. A high underpressure is generated at the centre of this “whirlwind”, where the rotational air speed can be up to ten times greater than the extraction velocity. This results in a highly effective extraction effect.