| 摘要 |
A device eliminating extraneous air, which is imported by open containers ( 3 ), from a clean room ( 1 ) enclosing a bottle processing machine ( 14, 20; 24 ). The, clean room is constantly replenished with clean gas to compensate for gas losses. The device includes a discharge cell ( 9 ) mounted in the clean room ( 1 ) and communicating with ambient via a discharge cell conduit ( 12, 17 ) and with the clean room via an aperture ( 11 ). Mutually oppositely situated slit nozzles (A, B) are mounted at the edge of the aperture ( 11 ) and blow clean gas at each other in the plane of the aperture ( 11 ). The discharge cell ( 9 ) is configured so as to enclose at least the container mouth zone at least at the filling site of the container ( 3 ).
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