Paint mist extraction system

The Heilbronn-Franken Chamber of Crafts is a modern service provider both in terms of public law and through the valuable educational, advisory and promotional services it offers to the approximately 12,600 craft enterprises in the Heilbronn-Franken region with five urban and rural districts.

One focus of the many tasks is the continued education of craftsmen and the training of young people. For this purpose, the Training and Technology Centre (BTZ) has 13 workshops, 8 theory rooms and 2 computer rooms. Trainees complete their inter-company training at the BTZ, craftsmen use this opportunity for further training and master craftsmen attend courses to prepare for their examinations.

The BTZ is also used by schools of general education so that pupils can learn about different trades in the workshops.

One of the thirteen workshops is a carpentry workshop with the workshop areas woodworking and wood surface, which is equipped with all common machines for working and processing wood and wood materials, so that the inter-company training can be organised in a practical way. In line with this claim to be the "extended workbench of a company", the workshop also includes a paint shop consisting of a paint room and a drying room.

The modernisation of the previously used paint mist extraction system and the associated experience in regular training applications were linked to requirements, also with regard to energy consumption and other specifications, e.g. the sound level of the system.

In the course of the tendering procedure, the company Maschinen-Grupp GmbH, Bad Wimpfen, was then contacted, which had the contact to the Southwest branch, of the company SPÄNEX.

After an intensive planning and project phase, the new system concept was convincingly presented to those responsible in the workshop, so that the company Grupp, together with the company SPÄNEX, implemented the order for the realisation of the new paint mist extraction system.

In contrast to the old system, the painting room and the drying room were equipped with two separate systems so that painting and drying can take place independently of each other, thus providing the greatest possible flexibility with regard to use and processes. Furthermore, different conditions are possible for painting and drying in terms of air volume flows and air temperatures, depending on the range of parts and the paints used.

The disadvantage of the high energy consumption and the operating restrictions at lower outdoor temperatures was due to the fact that the exhaust air was blown directly into the open air and the thermal energy contained in it was not used to heat the fresh air. In addition, the supply and exhaust air units were installed outside, which meant additional heat losses.

These conceptual disadvantages of the old system have also had a major impact in terms of costs, as the thermal energy for heating the supply air is generated in a gas-fired boiler system.