| 摘要 |
2110694 9301454 PCTABS00019 A clean-room ceiling module with a laminar air flow technology has three superimposed chambers (6, 7, 8) subdivided by two false floors (4, 5). The chambers (6, 7, 8) are interconnected by alternatively arranged openings (9, 10) in the false floors (4, 5). The top chamber (6) has a return-air opening (11) arranged in the side of the module opposite to the opening (9) of the top false floor (4). A fan (13) is arranged in the central chamber (7) below the opening (9) of the top false floor (4). The bottom chamber (8) is delimited at its lower side by a high power filter (12). Sound-proofing devices (23) are arranged in both top chambers (6, 7). The return-air opening (11) is arranged in the ceiling (1) of the module and projects from the side wall (3) over 20 to 30 % of its length and over its whole width.
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