Patent ID: 6619901
Filing Date: 2003-09-16
Classification: F24F

Abstract:
In a method for air guidance in a processing chamber (12; 12a), in which an air flow is generated in a housing (11; 11a) that is closed off from an outside region (20; 20a) with the exception of essentially gate regions (17, 18), the air flow carrying air cleaned by means of a filter (32; 48) into the processing chamber (12; 12a) inside the housing (11; 11a), in particular via the filling and sealing region of packaging containers(1; 2), in order to avoid contamination of the product and of the packaging containers (1; 2), and having an intermediate region (25), through which manipulations in the processing chamber (12; 12a) are possible, and a first air flow (flow arrow 40) is embodied between the processing chamber (12; 12a) and the intermediate region (25), and a second air flow (flow arrow 36) is embodied between the intermediate region (25) and the filter (32; 48), and a higher air pressure prevails in the processing chamber (12; 12a) than in the intermediate region (25), the improvement wherein gaps (27) are formed between the intermediate region (25) and the outside region (20; 20a), and that a higher pressure prevails in the outside region (20; 20a) than in the intermediate region (25), so that air flowing into the interstice (25) through the gaps (27) is aspirated away and delivered to the filter (32; 48).