INSTALLATION TO CREATE AND CONTROL ASEPTIC CONDITIONS IN AN ASEPTIC CAMERA OF A PACKAGING INSTALLATION

摘要

1. Installation for producing and controlling aseptic conditions in an aseptic chamber of a filling plant or in a filling/aseptic room for the germfree transferral of sterilized products from a filling device into containers which have been mainly cleaned and sterilized beforehand and which, in addition, are sealed under these aseptic conditions, characterized by : an inert-gas supply system (I) for creating an excess-pressure inert-gas blanket in the vicinity of an aseptic tank or of a filler feed tank at the end of the product supply line, at least one inert-gas sterile filter (3), one pressure regulator (4) as well as an inert-gas flowmeter (5) with a maximum/minimum limit-value switch activating the filling device being provided in a supply line (7) of the system, a sterilized compressed air system (II) which comprises in a central compressed-air supply line at least one compressed-air prefilter arrangement (13, 14) and in series therewith a control valve (16) as well as a compressed-air sterile filter (17) behind which the central compressed-air supply line is divided into several supply branch lines which lead to various areas of application (a-d) in the aseptic chamber and the filling device, there being provided in each supply branch line control valves (18; 19; 23; 25), if necessary a pressure regulator valve (21) as well as a flowmeter (20, 22, 24, 26) with a maximum/minimum limit-value switch for regulating a flow rate which has beeen correspondingly preset, a sterilizing agent supply system (III) comprising a preparation and metering facility (27-35) for the sterilizing agent, a compressed-air cross-connecting line (9, 9a) provided between the sterilized compressed air system (II) and this facility as well as a central sterilizing agent supply line which starts from this facility and in which control valves (36, 38), a pressure regulator (39) as well as an apparatus (40, 41, 42) for mixing the sterilizing agent and measuring the concentration and for performing checking and recording are provided and which divides up into several supply branch lines (37; 47-50) which are each provided with control valves (36; 44) and, if necessary, with flowmeters (45) with maximum/minimum limitvalue switches for regulating a sterilizing agent flow rate which has been correspondingly preset, and a central switching and control unit common to all the systems (I, II and III) and intended for linking operation of the systems in accordance with presettable or programmable process data.