Page 14 - ISCC'22
P. 14
25 th INTERNATIONAL S YMPOSIUM
October 11-13, ON CONTAMINATION CONTROL AND
Antalya TURKIYE | 2022 CLEANROOM TECHNOLOGY
14
picture), which also offer protection from undesirable external influences, especially
wind and weather, but are not designed at all to be contamination-free. Thus, these
ideas of a rudimentary camping tent had to be supplemented by the integration of
air supply systems in order to meet the demand for a cleanliness-controlled area. The
requirement for expandability and combinability of smaller individual systems into a
larger overall system was taken into account by means of a modular system (see figure
1, lower section).
CAPE –
FLEXIBLE,
PORTABLE,
CLEANROOM
SYSTEM
Figure 1; Development steps of the protection system. Upper section: the illustra-
tion shows the concept of a camping tent, adapted to the cleanliness requirements.
Lower section: the illustration shows the development of a modular and expandable
support system, made of weight-reduced glass-fibre poles (approx. 60 kg total weight).
Numerous flow distribution systems were prototypically implemented to test optimal
airflow concepts in the interior of the enclosure. Figure 2 (left side) shows a preliminary
version using a centrally placed overpressure flow column that ensures a radially out-
ward, horizontal flow pattern of the ultraclean air.
Figure 2; Left side: one of the first prototyps of a tentlike portable cleanroom (Image:
Fraunhofer IPA). Right side: flow optimisation embodiment with the aid of an optional
raised floor system.
To adapt to varying, customer-specific requirements for optimising the flow conditions,
a further development took place by means of a pressure plenum in the ceiling area,
which is supplied with ultraclean air by adjacent FFUs. The FFUs are fluidically connected
to the pressure plenum. To achieve a directed, unidirectional flow, it is not sufficient to