General especial Exhaust and Supply-inlet General remarks
Cleanroom classes 6 to 8 to DIN EN ISO 14644-1 (VDI 2083) or 1 000 to 100 000 to US Federal Standard 209 as well as C and D to EG-GMP are obtained using turbulent mixing-air flow. This is a mode of ventilation in which clean supply air entering the room is mixed - as intensively as possible - with the indoor air. The key effect on the degree of cleanliness is the dilution of air pollutants emitted in the room. The more even the dilution, the higher the degree of cleanliness reached. This calls for air outlets that achieve intensive admixture of supply air and indoor air due to their induction effect. For this, KRANTZ KOMPONENTEN uses its own tried and tested twist outlets. Supply air discharge is horizontal and radial. The strong induction effect of the air jets causes a turbulent, diffuse mixing-air flow with constant, low indoor air velocity. This reliably prevents zones of higher particle concentration.The Exhaust is made up of a twist outlet and a HEPA filter cell accommodated in a joint housing.To filter return air directly at the collection point in clean rooms KRANTZ KOMPONENTEN provides the Supply-inlet. This has the same shape and quality as the Exhaust.Instead of a twist outlet element, the Supply-inlet has a perforated plate for return air intake.Applications Both air outlets can be used in all areas of industry, research and medicine where air cleanliness to the abovementioned cleanliness classes is required (see chart on page 9).Exhaust and Supply-inlet are well suited for refitting existing HVAC systems in clean rooms.Construction design Exhaust Exhaust is available in 7 sizes, for a volume flow rate range of 20 to 450 l/s (75 to 1600 m3/h).Its essential components are the housing 1 with built-in HEPA filter cell 2 and twist outlet 3. Attractive slim ceiling twist outlets are used for all Exhaust sizes.The twist outlet is detachable downwards.Two different constructions are available to enable the HEPA filter cell replacement:U construction: Filter cell replacement from below, from clean room.O construction: Filter cell replacementfrom above,from false ceiling.
After releasing the contact pressure fixture 4 the filter cell 2 can be easily removed. In the U construction, the twist outlet or in the O construction the upper endplate 17 must be dismantled. The sealing frame 5 for the filter cell is available with a test groove 5b (DIN 1946, Part 4) for dry sealing. The tightness test with the U construction is conducted from below with the twist outlet removed, and with the O construction from above, with the endplate detached at measurement point 6. Instead of a dry sealing, the filter cells for housing sizes 1 to 6 are available with fluid sealing 2c. They have a groove with fluid filling in the segment of the cell frame.
In this option, the sealing frame 5 is fitted with a surrounding knife edge 5a which immerses in the fluid filling to make an airtight connection.The air-side connection can be made either via a lateral,rectangular connection spigot 8 with a connection flange, or from above with a circular connection spigot. An airtight shutoff damper 9 with either an electric or pneumatic servomotor 10 can be built into the connection spigot. Depending on the housing construction (U or O), the servomotor is accessible from below or above. Strap fasteners 14 are used for ceiling After releasing the contact pressure fixture 4 the filter cell 2 can be easily removed. In the U construction, the twist outlet or in the O construction the upper endplate 17 must be dismantled. The sealing frame 5 for the filter cell is available with a test groove 5b (DIN 1946, Part 4) for dry sealing. The tightness test with the U construction is conducted from below with the twist outlet removed, and with the O construction from above, with the endplate detached at measurement point 6. Instead of a dry sealing, the filter cells for housing sizes 1 to 6 are available with fluid sealing 2c. They have a groove with fluid filling in the segment of the cell frame.In this option, the sealing frame 5 is fitted with a surrounding knife edge 5a which immerses in the fluid filling to make an airtight connection.The air-side connection can be made either via a lateral,rectangular connection spigot 8 with a connection flange,or from above with a circular connection spigot. An airtight shutoff damper 9 with either an electric or pneumatic servomotor 10 can be built into the connection spigot. Depending on the housing construction (U or O), the servomotor is accessible from below or above.Strap fasteners 14 are used for ceiling