DE1815538A1 - Method and device for aseptic packaging of food - Google Patents

Description

HOGER - LEGAL RIGHT-GRIESSBACH - HAECKER

PATENT LAWYERS IN STUTTGART

November 28, 1968
ly-35

Ex-Cell-0 Corporation Detroit, Michigan 48232 / USA

Method and device for aseptic packaging of food.

The invention relates to a method and a device for aseptic packaging of food in containers below Use of an aseptic agent.

In particular, it relates to an aseptic packaging machine Filling and closing of cardboard containers, these containers being shaped, sterilized, filled and closed in order to obtain an aseptically packaged product.

It has been found in the industry that centralized packaging of products destined for distant markets Performance and economic efficiency increases. The Ver-

909848/0484

A 36 857 b - 2 -

November 28, 1968

increased production and sales are aimed at international today Customer groups. Production and sales extend over wide market areas for reasons of sales. This also applies to the area of the food industry, in which there is great interest, the so-called shelf time more numerous Products (i.e. the time it takes for products to stand on shelves before being sold) increase in the past only needed to be brief. The longer shelf life is necessary so that producers and traders in all sales and distribution markets can guarantee a consistently high quality of the goods sold.

Other products of particular interest are the small items that have previously only been sold in small market areas became. Examples are whipped cream, whipped cream, coffee cream, concentrated milk, and the like. These goods bring in year after year make a lower profit on sale because of their limited shelf life. This increased the cost of these products very strong for the consumer because of the extremely small units and because of the high. Percentage of spoiled goods, which must be accepted ^ if the consumer high quality products should be offered. This problem led to numerous attempts to reduce storage time of various food and chemical products, thereby increasing the profit margin for producers and traders raise.

Several studies have been carried out in the packaging industry, to increase the short storage time. For example, the goods can be aseptically filled and packaged. the However, aseptic packaging has not yet produced acceptable results for many packages currently in use. There are also no systems or devices suitable for this purpose. In aseptic filling and

909848/0484 - ³ -

A 36 857 b - 3 -

November 28, 1963

A dipping process was used for packaging, with the surfaces of the packaging coated with a bactericidal liquid and mechanical nip rollers were used to remove the chemicals of the bactericide after the container had been treated aseptically.

Immersing or coating the walls with a liquid, which were then mechanically wiped off as well as the spraying of the. Packaging require a disproportionate amount of time and space in order to drying the packaging containers before they can be filled. In some industries that work slowly or space for large systems, this is not a problem, while for others it is not possible, since the speed of the workflow and the size of the systems create limits when packaging must be observed. If one of these limits is not adhered to, the other will almost automatically be followed narrowed. For example, a slowly operating system would require a great deal of space in certain branches of industry be necessary in order to be able to set up several systems if the required output is to be achieved. Will against it If the plant is enlarged in order to achieve the necessary working speed, the premises must be enlarged System to be adapted. Spraying has other disadvantages as the question has arisen in some branches of the packaging industry is whether the sprayed agent can penetrate into all pores of the packaging or the container, in order to improve the quality in the aseptic treatment required by the market.

The invention is therefore based on the object of specifying a method and a device which are simple and reliable Way to enable aseptic filling and packaging of Viaren.

- 4 -909848/0484

A 36 857 b - 4 -

November 28, 1968
ly-35

According to the invention this is achieved in that a container provided with a bottom is guided under an atomizing nozzle that further the inner surfaces of the container are brought into contact with the aseptic agent which is nebulized, that the aseptic agent is then removed from the containers, that the container is filled with a Y / are and the lid of the container is tightly closed.

A suitable device for carrying out the method consists of a device for the aseptic treatment of a Container having means for generating an aseptic mist, further means for to remove this aseptic mist from this container, a device for pulling the container, a device for Closing and sealing the container and also an aseptic Has atmosphere to protect the opening at the top of the container when the container is filled, closed and closed be sealed.

A measuring system is used for each individual container measured a certain amount of the bactericide.

A filtered, sterile atmosphere is created that has a slight positive pressure to the atmosphere on the packaging or to regulate the container after sterilization in order to protect it during filling and closing. The container, which can be made of cardboard, can be aseptically filled with food. Facilities may be provided to support the Maintain a sterile atmosphere in the control area of the device while this is about in power or switched off is shut down for repair,

The device can be repaired, cleaned, and serviced while ice is kept under an aseptic atmosphere.

909848/0484 - 5 -

A 36 857 b - 5 -

November 28, 1968
ly-35

A filter system for the air is expediently provided, the individual elements of which have a long service life, furthermore using an easily accessible prefilter for protection can be.

The aseptic agent can be placed in the container in the atomized state are distributed, in such a way that all necessary parts of the container can be reached, whereupon the aseptic Bactericidal is broken down into harmless parts using warm air and / or removed from the containers, with which the Container is ready to be killed immediately, leaving a minimum of time between aseptic misting and pulling is required.

A distribution device is advantageously provided through which a bactericide is continuously applied to the row of containers or Packaging can be applied in a fog-ready state in order to treat them aseptically. The distribution device can also work intermittently.

The container or the packaging is expediently surrounded by an atmosphere of filtered, sterile air, with Means are provided to guide the air into the area of the sterile atmosphere, the air being so distributed or is circulated so that it flows practically evenly, almost laminar, so that vortex formation is avoided or to a minimum, is reduced as the air flows through the device.

The invention is concerned with a method and a Device for manufacturing, for aseptic treatment, for FuIt len and for closing containers with cleaned Air can be protected after using a bacterial solution were treated aseptically *, The aseptisolis Baliaiidlimg takes place

90984 ^ / 0484

A 36 857 b - 6 -

November 28, 1968
ly-35

with the help of a nebulization to get a complete and intimate Contact of the bactericide with the inner walls of the container can be achieved, leaving the remaining bactericide after treatment is discharged.

Exemplary embodiments of the invention are described below with reference to the drawing, in which

Pig. 1 in perspective an embodiment of a

shows packaging machine according to the invention.

Pig. 2 shows schematically in a perspective view

the pormen, the aseptic treatment, the pulling and sealing the container as it passes through the packaging machine.

Pig. Figure 3 shows the blank of a typical container as used in the Pig device. 1 shaped with the outer surface being shown from two of its sides.

Pig. 4 shows in perspective the container according to Pig. 3 in an open, tubular form, with it on sits in a thorn before the lid or bottom has been closed.

Pig. Figure 5 shows in perspective the container according to the Pig. 3 and 4, with the bottom closed while the lid is still open.

Pig. Figure 6 shows in perspective a finished sealed container as it comes out of the packaging machine exits after pulling.

Fig. 7 is a partial side view showing the pre-crushing device and the aseptic nebulization unit of the packaging machine according to Pig.1 represents.

909848/0484 ~~ -7-

A 36 857 b - 7 -

November 28, 1968

Fig. 7a is part of Pig.7 and it shows

the upper pre-crushing device with a beveling device attached to it which acts on the container after it has been pre-broken or pre-folded before it is passed to the aseptic nebulizer.

Fig. 8. Figure 13 is a schematic diagram illustrating the operation of the nebulizer.

Fig. 9 is a partial section showing the control valve of the aseptic nebulizer for the Bactericidal shows by which the required amount of bactericidal for intermittent nebulization is dosed.

Fig.10 shows the aseptic system in plan view Air atmosphere and the device for removing the bactericidal «

Fig.11 is a partial section along the line 11-11 in Fig.10.

Mg.12 is a partial section along line 12-12 of Fig. 10.

Fig. 13 shows the aseptic air filter system in perspective, that for the generation of the aseptic air atmosphere in the packaging machine

l served

Pig _o 14 is a quick cut roughly through the middle of de3

_e of Figure 13

909848/0484

A 36 857 b - 8 -

November 28, 1968

In Pig. 1 shows a packaging machine 10 which has a platform 11 on which the operator stands in order to move the packaging machine _; to operate while it is in operation.

Operation of the machine can be controlled by a control box 12 will. The container blanks, which have the shape shown in FIG. 3, are on the machine 10 in a loading device 14, as will be explained in detail below, housed.

During the operation of the machine 10, the container blanks taken from the loading device 14 by a feed device 16. The feed device 16 opens the blank and pushes it onto a mandrel 66 shown in FIG.

While the container is seated on the mandrels 66, the bottom of the container is closed and sealed, whereupon the container is removed from the molding unit 18 when it reaches a transport chute 20. The container then becomes a upper pre-breaking or pre-folding device to then in the aseptic facility 22 for nebulization and drying, in which the inner surfaces of the container are treated with a bactericide sterilized.

Drying removes the remaining bactericide from the container removed and further maintained in an aseptic condition as described below. The container is then in the machine is passed on to a filling device 24, in which it is filled, while it is continuously in its aseptic State is maintained. The container is further fed through the machine to a closing device 26, in which it is sealed aseptically so that it emerges from the machine at the end.

909848/0484 - 9 -

A 36 857 b - 9 -

November 28, 1968

The container structure is briefly explained with reference to FIGS. 3 to 6. The container 30 is shown in various forms. It has. Initially the shape of a flat blank 31, where the bottom and the lid of the container are spread out flat and the side walls are pressed against one another, so that the blank 31 has the flat shape shown in FIG. In

to
The container 30 / the packaging machine 10 or the loading device 14 is guided in this form. The container 30 is then pushed onto the mandrels 66 with the bottom and lid open and the container being given a square, tubular shape (corresponding to the shape of the mandrels 66), whereupon the bottom is tightly closed, as shown in FIG. In Figure 5, the container 30 is shown with a closed bottom and it is hereinafter referred to in this intermediate form, so with a closed bottom, as container 33, the lid or the filling end of the container is still open and spread out in this intermediate form. 6 shows the container in its final state as a finished packaging and it is referred to as container 34 in this finished, sealed state.

According to FIGS. 1 and 2, the blank 31 of the packaging machine TO or the charging device 14 is supplied in the form shown in FIG. A full description of the Container 30 is disclosed in U.S. Patent Nos. 3,239,126 and 3 270 940 included. In order to understand the present invention, there is only a more general description of the container 30 necessary.

The container 30 is divided into three sections by score lines 36 and 37, these score lines extending completely Extend around the container. According to Fig. 3 represents the material Above the score line 36 is the base 38, the material below the score line 37 is the cover 39. The base 38 has a closure panel 41, a closure panel 42 and to be folded

909848/0484

- 10 -

A 36 857 b _ ίο -

November 28, 1968

Fields 44 and 45. Field 45 is shown in FIG. Backward to be folded fields 46 and 47 connect the field 44 with the fields 41 and 42, respectively. The field 45 is with the Fields 41 and 42 are correspondingly connected by two fields 48 and 49 which are to be folded backwards, as shown in FIG.

The portion of container 30 between score lines 36 and 37 is main portion 50. Main portion 50 includes. four side fields 51 connected to bottom 38 and cover 39 by score lines 36 and 37. The lid 39 has two Roof panels 52 and 53, which are shown in FIGS. 5 and 6, and two end panels 54 and 55, which are shown in FIGS. 2 and 3 are. The front panels 54 and 55 are with the roof panels 52 and 53 correspondingly through panels to be folded backwards 56, 57 and 56 'and 57' connected. Two of the side panels 52 are connected to one another by a tab 58 that extends practically extends over the length of the container and is shown in Fig.4.

The feed device 16 removes the flat blank 31 from the loading device 14 in a specific time sequence. After the blank 31 has been removed from the loading device 14, it is loaded by a number of elements known per se opened, so that the blank 31 shown in FIG open container 32 is formed. The feed device 16 then guides the open container 32 onto a mandrel 66 of a device 60

The device 60 has a hub 62 which is seated on a rotatable shaft 64. The mandrels 66 are evenly spaced around the hub 62 is arranged and attached to it. As FIG. 2 shows, a container 30 is opened before it passes through the feed device 16 is pushed onto one of the mandrels 66, which is located in

- 11 -

909848 / CU84

A 36 857 b. - 11 -

November 28 -1968

the loading position 68 is located. After the open container 32 has been pushed onto the mandrel 66 in the loading position or loading station 68, a known per se, not shown, acts Vorbrecher on the fields 44 and 45 to be folded, whereby the individual fields of the bottom 38 along their different Score lines can be pre-broken or pre-folded.

After the floor 38 has been pre-broken in the loading station 68, the mandrel 66 is in the next position, that is brought the heating station 70, in which the floor 38 is preheated prior to the completion of the floor. In the heating station 70 the floor 38 is exposed to a temperature of about 425-430 ° C (800 ° F) for a time of about 9/10 seconds in which the surface temperature of the coated paperboard increases to about 105 ° C (220 ° F). The device 60 is then in their next position switched on, in which the shutter field between the shutter field 41 and its neighboring, after fields 46 and 48 to be folded backwards is turned.

The device 60 is then indexed, whereby the mandrel 66 with the container, the bottom of which is tapped, into the next position is moved, which is a printing station 74 in which guide rods 73 act on the floor 38, uja to hold the closure panels 41 and 42 of the bottom in their struck position. Immediately after arriving at the Printing station 74, a pressure cushion 74 'acts on the floor 38, whereby the individual closure fields of the bottom are connected to one another, so that the container 30 is liquid-tight Receives soil and it now has the shape of the bottomed container 33 shown in FIG.

In the individual embodiments of the machine according to the invention one or two printing stations can be provided. In the present case, a second printing station 76 is in the next position provided. The pressure pad 76 'acts on

9098Λ8 / 0Α8Λ - 12 -

A 36 857 b - 12 -

November 28, 1968

the container 30 in the same way as the pressure pad 74 ', i.e. it applies pressure to the bottom 38. The pressure pad are water-cooled, which means that the surfaces of the bottom of the container are cooled. The device 60 now switches the Mandrel 66 in a discharge station 78, in which a stripping device known per se, not shown, is provided with the bottom The container 33 is removed from the mandrel 66 and transported via the feed chute 20 onto the conveyor chain 80.

The conveyor chain 80 transports the container through the remainder Part of the packaging machine 10, specifically timed with the switching sequence of the device 60. The container is now processed by the upper pre-breaking device 81.

The pre-breaker moves the front panels towards one another over the upper end of the container so that the score lines of the Lid 39 are pre-broken so that the lid can later be easily closed and sealed. The primary breaker 81 acts in such a way on the upper closure or cover 39 that the front panels run inwards and not outwards, so that a suitable locking rib 35 is formed in the locking device 26, as shown in FIG. 7a. The container is then taken to an aseptic treatment facility 84 in which the inner surfaces of the container 33 be treated by an aseptic agent, as will be explained in detail below. The container 30 is then to a dryer 86 which is provided with a plurality of drying stations along the path of the container, one of which is shown and described. The push button 86 is used to direct warm air to the container after it has been in the Device 84 has been treated aseptically. The bactericide used here is hydrogen peroxide, which is under the influence of heat in water, HgO, that since the aseptic means is sprayed on in the device 84 in the form of a mist,

909848/0484 - 13 -

A 36 857 b '- 13 -

November 28, 1968
ly-35

is discharged from the container as vapor, and monatomic oxygen breaks down, which is quickly converted to oxygen Og. Since the bactericide is released in a misted state in the device 84, drying takes place in the dryer 86 in a very short time, so that only a short passage distance is required. After the dryer 86 has finished working on the container 30, it becomes a filler 88 performed, in which the goods to be packed are filled into the open end of the container 30. In the illustrated embodiment it is, for example, a filling machine for milk or another liquid, so that at the Filling device 88 the container is filled with liquid. The container then becomes a heater immediately thereafter 90 out to heat the upper closure, through which, in a preferred embodiment, the upper Closures or lids / selectively heated. After the lid 39 is heated, the container becomes one Closing device 32 guided, in which the closing fields of the lid are connected to one another under pressure and cooling so that the locking rib 35 is formed, thereby making an airtight and liquid-tight lid closure receives. The sealed container 34 is then transferred from the sealing device 92 to a discharge or distribution device 94 led.

With reference to FIGS. 1 and 7, the upper pre-breaker 81 and the aseptic treatment device 84 and their operation on the containers as the latter pass through the packaging machine 10 will be explained in detail. The open container 32 is removed from the mandrel 66 in a controlled temporal relationship and taken up by the transport chute 20, in which it is brought onto the conveyor chain 80 by which it is moved through the remaining part of the packaging machine 10. The conveyor chain 80 leads in the illustrated

909848/0484 - H -

A 36 857 b - - 14 -

November 28, 1968

presented embodiment a timed intermittent Movement out ", guiding the open containers 33 from one station to the next, one at each station Dwell time is provided.

The packaging machine 10 has a base 96, the entire structure of which is not explained in detail ^: it is only noted that the machine has side frames 97 and 98. The frames 97 and 98 are firmly connected to one another by a number of transverse ribs 101 and connecting parts 102. Adjustable feet 103 are provided at the bottom of frames 97 and 98 so that machine 10 can be positioned at a suitable height above the floor. The base 96 has enough space to arrange, set up and firmly connect the various parts to the packaging machine 10.

A protective screen is provided over the upper pre-breaking device 81. The upper pre-breaker 180 is provided with a movable support frame 106 having an inner bracket 107 and a pair of wings 108 attached to it and which are used for breaking ahead. When the container 33 is arranged below the upper primary breaker 81, the movable frame 106 is lowered in order to introduce the holder into the interior of the container and the wings 108 with it the outside of the top closure or lid 39 of the container 33. The wings 108 are triangular in shape formed, and when they are lowered, they move towards each other and act on the end panels 54 and 55, whereby the individual score lines of the fields of the upper fastener are pre-broken, whereby their rigidity is reduced so that the container can be easily closed after being aseptically treated in the facility 84 and has been filled in the filling device 88. To

- 15 909848/0484

A 36 857 b - 15 -

November 28, 1968

After pre-breaking, the movable frame 106 is lifted back into its starting position, as shown in FIG. 7, and the conveyor chain 80 feeds the container 33 onto the device 84 for the aseptic treatment. Means 84 is related Stationary installed on the bottom of the various sizes of the container, but with the tip of the atomizing nozzle can be adjusted.

The container 33 is shown in Figure 7 in the form of a typical known Cardboard milk bottle shown with a volume of about 0.95 1. A control device 110 for the nebulization nozzle is provided. The operation of this facility is explained below.

A line 112 for the bactericide is run through the control device 110 controls and leads the bactericide to the nebulization nozzle 114. Two air lines 115 and 116 are likewise controlled by the control device 110, these lines running up to above the atomizing nozzle 114. The nozzle 114 has a shaft 118 which is directed towards the container. There is a nozzle head 120 at one end of the Shaft 118 is provided through which the bactericide enters the container 33 is introduced in the form of a path or a beam 122 (Figure 7). The path or beam 122 is tapered Shape, the opening angle of the cone in the case of the one described here Embodiment is about 13 °. It is important that the bactericide is aerosolized to prevent the formation of To prevent droplets on the container, covering all of the interior surfaces of the container with the aerosolized bactericide be coated.

Various bactericides can be used, for example a 35 # solution of hydrogen peroxide. The bactericide is delivered along path 123. The treatment of each container 33 amount of bactericide used

909848/0484 - 16 -

A 36 857 b - 16 -

November 28, 1968

ranges from 0.1 to 0.2 ml. The amount to be dispensed can be set in a reliable manner by the control device 110./this position of the packaging machine 10, the inner surfaces of the container 33 are cleaned aseptically. This state is maintained during the container 30 is filled and tightly closed, as will be explained below.

In Pig.7a there is a modified one compared to that according to Fig.7 Embodiment shown, wherein a bevel unit 124 being attached to the movable frame 106. The bevel unit 124 has a support 126 which supports an adjustment arm 127. The adjustment arm 127 extends over the Conveyor chain 80 and provides the working IHeraente of the beveling device 124 practically over the center of the container 33. When the movable frame 106 moves up and down, like As discussed above, the bevel unit 124 and its associated parts also move up with the frame

and., al). The adjustment arm 127 is provided with two guides 128, the

move the roof panels 52 and 53 towards each other. Simultaneously fingers 129, only one of which is shown, move the forehead panels 54 and 55 towards each other and between the roof panels. In this embodiment, the chamfer unit 124 is between the upper pre-crushing device 81 and the device 84 for the aseptic treatment arranged. In other embodiments, no such beveling device is provided. The bevel unit can also be positioned between the filling device 88 and the heater 90 can be arranged.

In Figure 8, a compressed air source 131 is shown which air through a filtered dehumidifier 132 before the air enters the air supply system of the packaging machine 10 .is performed. The compressed air is divided and through

8/048 4

18155

A 36 857 b ■ - 17 -

November 28, 1968

two separate air systems passed through, one system is a needle valve air actuation system, the direction of which is through arrow 134 is indicated. The other system is the container nebulization system, the direction of which is indicated by arrow 136 is.

The system indicated by arrow 134, which opens and closes the nozzle head, is described in detail below. The compressed air entering this system flows through a conventional air filter 138 which is provided with a lubrication system into which oil is added. The pressurized air then flows through a pressure regulator 139 at a pressure of about 3.1 kg / cm (45 PSI). The air continues to flow through the system 134 and to a valve 141 which is controlled by a solenoid I42. The solenoid 142 opens and then lets the yeneil 141 receive a signal from a time switch 144 which operates in a specific temporal relationship with the packaging machine 10 in a manner known per se. If daa / is open alve 141 ', the air flows through the conduit to channels in the two subsystems is divided by the arrows? 145 and 146 are indicated, that beseiehiiafes Λ by the arrow 146

the .by

Subsystem allows the compressed air to flow straight through / the system indicated by the arrow \ H to the nozzle 114, opening the nozzle head 120, the operation of which will be described in detail below. When the solenoid 142 has the valve 141 closed, the compressed air through dsn out outfeed part dos valve 141 and through an attached spring-loaded valve, the nozzle head 120 is closed.

The other subsystem indicated by arrow 145 performs the Air through a pressure regulator 151. After the air has passed i3fc through the pressure regulator 151, it continues to flow into a valve device 152 and moves a slide valve 154 left in Pig. 8, its complete operation and purpose

909848/0484 " ™ "

A 36 857 b - 18 -.

November 28 I ^c j68

will be explained in detail further below. The ones just described Operations are timed by the timer 144 so that the workflow coincides with that of the other The compressed air system and the bactericide system match.

Because another air system 136 is immediately divided into two subsystems separated by arrows 156 and! 58, the sub-system 158 leads the compressed air through a pressure regulator 159 * which leads the air to a manually operated valve 161. The compressed air then flows through the valve 161 and acts on the reservoir 162 to reduce the pressure of the liquid bactericide 164 regulate. The valve 161 serves to lead the compressed air to the storage container 162 in order to contain the bactericide 164 To apply pressure or to a discharge line 165 »around the storage container 162 connect to atmospheric pressure au if represent, fill or make other sanctions disii necessary.

Uao other Unbersystern 156 dec compressed air system 136 leads the air au eiriööi. Äiciiioniefcet · 166 and then to one stage valve 160, which is controlled by a solenoid 69, the opening valve 168 is gaciffnit by the solenoid ΓΑ ¹ ) ho in the receipt of a signal from the time charter 144 so that it In connection with the compressed air star 134 work "?;, which is described nu-jh, ΊΙ & ηη the air flows through diuaea il '/ stvm 13", it flows through the pressure regulator Γ / 1, the pressure regulator Γ / 1 regulates the pressure of the air into the nozzle 1 14 afcröuit, in which the oie is mixed with the bactericide to form the Hebal au through which the container is treated aseptically, before it is still entered,

The bactericide system is represented by the arrows \ 'J2 . The bactericide 164 is kept under pressure by the compressed air regulated by the manually operated valve 161 - as explained above, A solenoid 174 controls a valve 175 and opens it when receiving a signal from Hem time switch

_-19 ■ 9OQ84t / 0484

A 36 857 b - 19th

November 28, 1968

144, whereby the bactericide can flow to the nozzle 114 in order to there to be mashed with the compressed air from the compressed air system 136 to form the lever after the bactericide has flowed through valve 175, it encounters a filter 176, whereby the bactericide is filtered. The bactericide then flows through a shut-off valve 177, if this is open, and it continues to flow into the valve device 152 to the opposite end of the slide valve *} 1554 ku actuate. When the compressed air is not in communication with the valve device 152, the bactericide flows through the shut-off valve 177 and moves the slide valve 154 to the right in FIG. 8. If, on the other hand, the compressed air is directed to the slide valve 154 acts, the shut-off valve 177 would be closed and a measured amount of bactericide is applied to the valve device 152 down to the nozzle 114. Before the bactericide presses into the nozzle 114, or through a manually operated valve 178 tapped or removed from ground. The valve 178 serves to shut down the system prior to inclusion during operation or at other times, if necessary, and it directs the bactericide into a drain line 181. However, the bactericide normally flows into the Nozzle head 120. The primary purpose of the drain line is to receive the drain from valve assembly 152, lias will be explained later.

A switch 182 is provided on the packaging machine 10, which is used to display the timer 144 when a container 30 has reached the position in which it can be treated aseptically. If the switch 182 does not indicate the presence of a container to the timer 144, the bactericidal nebulization system will not operate. Y / hen ejn container 30 the position has taken, is treated in (Igt he "asoptiBcb, this position is by the switch MVe '

~? 0 · ■■■

909848/0484

A 36 857 b - 20 -

November 20, 1958

is felt and displayed on the timer 144. The time switch 144 then executes its program and actuates the system.

When the container is ready for aseptic treatment occupies, the valve device 152 is filled with bactericide, as shown in Pig.8 is shown. The solenoid 142 opens that Valve 141, so that compressed air on the compressed air side of the valve device 152 can flow. This moves the slide valve 154 to the left in the valve device 152, whereby pressure is exerted on the bactericide, whereby the check valve 177 is closed and a metered amount of the bactericide is pressed into the nozzle 114 to be there with the compressed air to be mixed from the compressed air system 134. A switch lever 184 then operates a switch 186 to control the Timer 144 indicating that the bactericide has been dispensed, at the same time actuating solenoid 142, to open valve 141, solenoid 169 is actuated to open valve 168, thereby releasing compressed air flows into the nozzle 114 to be mixed with the bactericide 164 to be treated, whereby the container is treated aseptically before it is filled, opened and removed from the packaging machine 10 is discharged. The repair, the flow and the pressure acting on the mixture of bactericide and compressed air are selected so that a mist is generated when the bactericide is ejected onto the nozzle head 120, as shown in FIG Fig.7 is shown.

V / ie Tig.7 shows that the one emerging from the nozzle head 120 is Ray 122 has the shape of a cone with a cone angle of about 13 ° when it enters the container 30. A mouthpiece 188 iol arranged at a recurrent distance from the container, bo that the lever does not work. directly on the bottom of the container

- 21 P 0 9 8 4 8/0 4 8 k

A 56 857 b - 21

November 28, 1968

meets. This avoids the even formation of droplets in the container 30; droplets would require a long drying time before the bactericide is supplied in a nebulized state. In the embodiment described here, the container 30 is guided from the device 84 to the dryer 86, in which the active air acts on the bactericidal I mist after the container 30 has been aseptically treated with the aid of the hot air active bactericide in stable harmless fumes. If, for example, hydrogen peroxide, HpO ^ »is used as a bactericide, when it is heated, it breaks down into water, HpO and monatomic oxygen, 0. Me oxygen atoms combine with one another and form oxygen molecules, Og» Excess bactericidal vapors can, if necessary, removed by suitable -.3in Entlüftungsöystem v / ground, the dashed lines in FIG. I ά Ls vent cap 109 shown lob. As FIG. 7 shows, the fire device 110 is provided with a 'pressure regulator 171 ¹ and a pressure regulator 151' for the compressed air of the IHisei Kugöführbe, and also with a control button 192 and 193 for each regulator. In the middle of the front valve there is a control valve 195 which can be adjusted to control the amount of bactericide that each container is used during the aeeptic period.

will,
see treatment trains leading t _; , ~~ ünd if the mist is released intermittently.

As shown in FIG. 9, the control valve 195 is provided with an adjusting knob 194. The adjustment knob 194 is connected to a shaft 196 which can be rotated with its help. The shaft 196 controls the slide valve 154 of the valve device 152 in order to determine the amount of bactericide to be released, as will be explained below. The shaft 196 has a threaded tip 197, furthermore a stop end 198 which is provided with a stop tip 199,

909843/0404

X 36 057 b - 22 -

November 28, 1968

which cooperates with the slide valve 154 and forms a forced stop for this in its retracted or left position, as FIG. 9 shows. In the middle of the lever mechanism 154, the switching lever 184 is connected to the slide valve 134 and extends outward through an opening 202, where the switches 186 and 210 are actuated. The container 186 indicates to the timer 144 that the bactericide has been removed so that the nozzle head 120 can be closed. The timer 204 shows the timer 144 that a new dosed amount of bactericide is available for the preparation of a container. If as "aseptic .The system waits for a v / Eiteren container Ln which Jtellung ¹ is brought in the aseptic treatment, has the control valve i ^l diu J5 in the Fig. 8 and the position shown. 9 By means of permanent valve 195, the slide valve 154 can enter unavoidable stop positions in mt: hr * arw νβην. · Λιί'-α \ νη>} inevitable stop positions. ', / ardeii, v / odarch las \ Γοlumen of the available space Ln tier / ^ ntiliiliiriinitiuii ·; 152 m> .v recording dstj Bakterizidü fUiii ih; iii '/ orratobehältor 162 regulated' // earth fcinn. On this ϊ / ί, ίΐ'ίί v; ird da-; t'iu ¹ <i: l ·: Dispensing to each container for Yer ~ t'üfiuwg / it- ^ heidfi Yohuu-iti to Bactericide gerogelt, D: u; Bactericide enters lie '/ en ti! Device 152 when the slide valve. 1 j> \ after Li.tiku Ln fc'ig. *) Is moved. V / etm dus vjchiebe- ■ /! Iiitll 154 by the compressed air from dam syst- ^ n 145 to the right gülriuikfc, ", rird da; i Bakter.isid am find .; der? Entileinriehfcung i ^r j2 he.rau ti 3 ; j presses, as is shown by Pfyile S? 'linge ", and the shut-off valve 177 is closed, as described above," there is a security feature against failure, and /. was insofar as if the hydrogen peroxide is delivered to the mine head 120, the solenoid I74 bores the valve, thereby preventing further hydrogen peroxide from entering the bactericide outlet and being delivered to the container.

- 23 -

909848/0484

A 36 857 b - 23 -

November 28, 1963

peroxides can be regulated easily and extremely precisely, whereby all danger is eliminated. If there is any interruption or standstill in the compressed air system, the nebulization unit cannot work at all.

In some embodiments, intermittent operation of the nozzle 114 is undesirable. In order to achieve continuous operation of the nozzle 114, a switch 206 is turned on. The switch 206 bypasses the timer 144 and the switch 182, whereby a continuous operation of the control unit is achieved _r as described below. The pressure regulator 151 is set to zero. As a result, the slide valve 154 of the valve device 152 remains in the right-hand position, as shown in FIG. 8, during the entire continuous treatment. The valve 141 is kept open by the solenoid 142. As a result, the nozzle head 120 also remains continuously open.

The solenoid 169 is energized, thereby continuously holding the valve 168 open, causing the pressurized air to flow continuously through the sub-system 156 to the nozzle 114.

Solenoid 174 is energized to hold valve 175 open to allow continuous passage of bactericide 164 through the bactericide system. The slide valve 154 remains in the right position in the valve device 152, as was explained above. The slide valve does not move back and forth, so that bactericide continuously passes through the shut-off valve 177 and itanii flow via the bactericide system to the nozzle 114. The bactericide 164 entering the nozzle 114 is then activated with the compressed air

5538

A 36 857 b - 24 -

November 28, 1968

mixed that comes from the system 136 and this mixture
is expelled as a bactericidal mist through the mouth 188 of the nozzle, as discussed above.

The container 30, if it has been treated aseptically, is controlled by the device 22, as Pig.7 shows. Of this Stage on, the top of the container is protected by an aseptic atmosphere until it is filled, sealed and sealed has been discharged from the machine.

10, 11 and 12, a cover 208 is attached to the side frame 98. A lid 210 is on one
Bund 211 of a housing 212 attached. The housing 212, which is used to regulate the air, is fastened to a retaining bracket 215 by screws 214. The bracket 215 is through a
Number of screws 217 attached to a heating pipe 216. The heating tube 216 is part of the side frames 98. The housing 212 has a bottom 2191 which is slotted around a
To allow passage of the container 30 in its longitudinal direction, as shown in Figure 11. The top opening of the container 30 is protected in the housing 212 and extends above the bottom 219. The guide rail 220 extends the length of the packaging machine 10 to support the bottom of the container as it is moved on its path by the conveyor chain . A grid 222 sits on top of it
The collar 211 and is held by the edge 224 of the cover 208. The grid 222 is tensioned between the collar 211 and the edge 224 by a number of tension members 223. The cover 208 is provided with a compressed air line 226,
which runs towards the side frame 98. The line 226 has a tip 227 for receiving a compressed air pipe 228.
The tube 228 is connected to the tip 227 by a clamp 229. Air flows through the pipe 228 under low pressure in the cover P08, the air flows through the grille 222,

- 25 S098A8 / Ü48A

18155

A 36 857 b - 25 -

28.NoVeInI) he 1968

whereby · the air practically has a laminar flow is obtained, as indicated by the arrows 231. This air has been brought into an aseptic state, as below is described. As the compressed air flows through the cover 208 of the device 22, it passes through one in the floor 219 provided opening, thereby preventing atmospheric air from entering the housing 212 and in contact reaches the top of the container 30. A cover 232 is provided within the housing 212, which is fastened to the retaining bracket 215 by the screws 214. Above the base 219, a base 234 is arranged, the has a number of outlets 236 spaced along the path in which the conveyor chain 80 carries the container 30 moves. In the outlets 236 nozzles 238 are arranged, which are practically in the middle of the container, if the outside is moved intermittently along its path. The nozzle 238 is held in place by an I-shaped bracket 241 that connects to the nozzle 238 with nuts and bolts 242 connected is. A housing 244 encloses the sides of the hot air cover 232 and is provided with a point 246-at its upper end. An upper protective screen 248 is above a portion of the upper portion of the cover 232 is disposed between the point 246 and the upper protective screen 248 an opening is provided. There is also a Schutsdeckel 250 provided which has a locking groove 251 through which it is connected to the upper protective screen 248. The protective cover 250 is on its other side through the collar 246 supported and secured by nuts and bolts 252.

In the cover 232 is; at a short distance from an inlet opening 255 of the housing 212, a guide plate 254 is arranged. The inlet opening 255 is aligned with the heating tube 216. The guide plate 254 is provided with a base plate 256,

- 26 909848/0484

A 36 857 b - 26 -

November 28, 1963
ly-35

which is attached to the bottom 234 of the cover 232. The attachment can be done in different ways, e.g. by point views or the like. take place. Adjacent to outlet 236 is the Lelbplatte 254 provided with a collar 257. The housing 244 iüfc provided with clips 258 at its opposite ends, which are aligned with point 257 and which receive a grid 261.

The air is heated by a heater (not shown) and passed through the cover 232 at a temperature of about 232 ° C. (450 ° C.) to the container 30. The air is filtered before being drawn into the heater and is then blown from the heater at high flow velocity through the heater tube 216 into the housing or cover 232. If never Ln enters the housing 232, it hits the baffle 254, v; orauf it is directed around dieäs, so that the hot air fills dan housing 232, when the hot air weifcerströmt, as indicated by diue arrows 262, is the grating 261 the turbulence of the air; tuf is reduced to a minimum and the LuCb practically with; Help άϊΒ grating 261 a laminar flow or divides. When the He LU air has reached the other side of the grille 261, it is discharged through the nozzle 238 and introduced into the container 30. When the hot air enters the container, the hydrogen peroxide breaks down into water vapor and oxygen. Some of the hydrogen peroxide or bactericide is blown out of the container so that it sometimes does not disintegrate. If necessary, a venting system, such as the venting hood 189, can be placed over the device 22 in the housing 212,

The container 30 is filled in the filling device 24 and closed of the heater 90 where the top shutter and

90984.8 / 0-484 - 27 -

A 36 857 b - 27 -

November 28, 1968

its associated surfaces are heated in order to seal them to be able to. Haclidem the top closure or lid 39 has been heated by the heating device 90, the roof panels 52 and 53 are brought together by the guide rods moved into the closed position so that when the container the closing device 26 or the upper shooting device 92 achieved, a pressure is exerted on the container by pressure jaws and this is cooled, whereby the upper closure is produced, i.e. the lid is closed. The container is then moved from the sterile atmosphere to the discharge device 94 brought. Filling, heating and sealing is known and for example in US Pat. No. 3,249,025 described.

Referring to Figures 13 and 14, the production of aseptic

ρ air is described for creating the protective atmosphere, while the container is in the device 22 for aseptic, atomizing and drying, the filling device 24 and the sealing device 26. An air filter 265 with four adjustable feet 266 that support a filter housing 268 is provided. A continuous pump 271 and a flow pump 272 are mounted on top of the filter housing 268. An airtight cover 274 is attached to the front end of the filter housing 268 by screws 275. A gasket 276 is positioned between the cover 274 and the collar at the end of the filter housing 268 to create an airtight cover.

The filter housing 268 is divided into a receiving chamber 278 and a discharge chamber 279 by a flange 281. Of the Flange 281 is attached to filter housing 268 by screws 282. A disposable filter 284 and a permanent filter 285 are correspondingly in the receiving chamber 278 and the Discharge chamber 279 is provided. The disposable pen 204 is used

'- 28 ~ 909848 / Ü484

A 36 857 b - 28 -

November 28, 1968

helps to remove most of the large particles and contaminants in the atmospheric air that are released by the pumps 271 and 272 is delivered. The filter 284 should be changed periodically to better use the packaging machine 10 aseptic condition. The disposable filter 280 can be easily removed by opening the front cover 274 removed and filter 284 replaced with a new disposable filter is replaced. Removable handles 286 are provided for easy removal of the filter. The handles 286 have a bracket at the front that grips the end of the filter 284 and can be easily removed from the filter by pulling the handles away this is released from its clamped position. Guide rods 288 are provided around the new disposable filter in its position, whereupon the handles 286 quickly. can be brought back into their clamping position. The handles 286 are spring loaded and anchored to the filter housing 268. They are shown in Fig. 14 in the normal position, the Position in which the disposable filter 284 is released, is shown in dashed lines.

The disposable filter 284 should be replaced about every two to three months. The permanent filter 285 is said to be small particles remove and bring air to its final sterile state. As this filter only removes a few impurities it has a much longer service life and should, for example, every twelve to twenty-four months be replaced. The filter 285 is mounted on guide rods 289 and is held in place by a manifold housing 290 and held in place. The distributor housing 290 has a cover 291 that is attached to a collar 292. An elastic one Seal 294 is between the buna at the end of the filter housing 268 and your distributor housing 290 are provided. The permanent filter 285 is provided with airtight sealing edges 295,

909848/04 8 4

A 36 857 ί> - 29 -

28.1 Iovefflber 19 68

by providing an airtight seal against the splash 281 and the covenant 292 is reached,

The incoming air is through the pumps 271 and 272 into the Receiving chamber 27S is pumped and flows through the disposable filter 284, then through permanent filter 285, and after that into the distributor housing 290, in which you can access the various Parts of the machine is distributed. In the case of the Embodiment, a compressed air pipe 228 is provided, the dia aseptic air leads to the device 22, furthermore a second Compressed air tube 296 that carries the aseptic air to the filler 24 leads and finally a third compressed air pipe 297 is provided which carries the aseptic air to the Closing device 26 leads. These facilities are available in the packaging machine 10 in connection with one another, so that there is a continuous flow of aseptic air which protects the top of the container after it has been aseptically treated as discussed above has been.

A manometer 300 is provided with two lines 301 and 302, the corresponding to the receiving chamber 278 and the distributor housing 290 are connected. The manometer 300 shows the pressure difference; between the receptacle he combed 278 and the distributor housing 290 to “If the disposable filter 284 is a certain amount of impurities from the atmospheric Has absorbed air, the air will flow through it the filter makes it difficult and the pressure in the receiving chamber 278 increases, which is indicated by the pressure gauge 300 as a higher differential pressure, is shown. The operator recognizes from the pressure difference that the filter 284 should be replaced, thereby achieving that the filter 284 at the correct time and not replaced too early and not too late.

- 30 309848/0494

A 36 857 b - - 30 -

November 28, 1968
ly-35

When the machine is not in operation, e.g. at the end of the Days-ö-, overnight or on weekends, is continuous through the working pump 271 continuously air through the air filter 265 pumped. The pump 272, on the other hand, is switched off, so that it no longer circulates air. This continuous Jjuftumwälzung by the pump 271 prevents the permanent Filter 285 becomes dirty, and it also serves to keep the packaging machine 10 free of contamination.

In order to prevent the conical beam 122 from falling on the au The mouthpiece is 188 in a certain distance from. Ground arranged so that the Speed of the jet is not enough to get on the Bursting soil, which would lead to the formation of droplets. In the packaging machine 10, containers of various types Sizes, the same. Have cross-section to be machined. When smaller containers run through the machine, the guide rails 221 are raised, so that the upper lock and the dachshund 39 of the container 30 during its · Run through the machine is the same height. In the illustrated embodiment, a container with a content of about 0.95 1 (quart) is used, a container with a content of about 0.47 L (pinü) through the machine

suspended, then the guide rails 221 / (B ¹ Ig.ti) until they

the bottom of the container in the indicated by dashed lines in Fig.7 Bring height 38 '. To increase the formation of droplets can prevent the Γ88 mouthpiece from moving upwards into a higher position Position can be moved »e.g. into the position shown in Fig. 7 188 * j the adjustment of the nozzle 114 takes place by a Holding block 3-4-1 released and designated as 341 'in a predetermined one Location postponed, whereupon he again worked on one Retaining bracket 342 is attached. This Verstellmo.glichke.it- is

- 31 809848/0484

18155

A 36 857 Ij - 31 -

November 28, 3968

just an example, it can also be used in any other way take place.

The invention is not restricted to the embodiments shown and described, but rather are variants and modifications are possible without deviating from the claims.

909848/048 «- 32 -

Claims (27)

A 36 857 b - 32 - November 28, 1968 claims 1. Process for the aseptic packaging of goods, in particular Food in a container using an aseptic agent, characterized in that a bottomed container is passed under a nebulizing nozzle that this aseptic agent that the aseptic agent is brought into contact in the atomized state with the inner surfaces of the container is removed from the container, that the container is filled with a commodity, and that the lid of the container is locked " 2. The method according to claim 1, characterized in that an aseptic atmosphere over the upper end of the container is created to prevent atmospheric air from getting into the interior surfaces of the container comes into contact at the time at which he asep- ' ■ the table has been treated until its lid is closed. 3. The method according to claim 2, characterized in that air is passed through an aseptic filter system, to generate aseptic air, and that the aseptic the / space
Filter system, mix / connected to the aseptic atmosphere in order to supply it with aseptic air. 4. The method according to claim 3, characterized in that the aseptic air with the help of a continuously operating Fan is circulated in such an amount that even if no containers are treated, no atmospheric one Air enters the aseptic atmosphere. 909848/0484 " ³³ " A 36 857 b - 33 - November 28, 1-968 5. The method according to claim 1, characterized in that the output of the aseptic mixture is controlled so that it is only ejected when a container is in the treatment position. 6. The method according to claim 1, characterized in that Hydrogen peroxide is supplied as part of the aseptic agent and compressed air is supplied as another part of the aseptic agent and that hot air is introduced into the container in order to remove the aseptic mixture from the container remove after it has been treated aseptically. 7. Device for performing the method according to one of claims 1 to 6, characterized by a device for the aseptic treatment of a container with a device for producing an aseptic, cone-shaped Mist jet (122) injectable into the interior of the container to contact the interior surfaces of the container (30), means for removing the aseptic Mist from the container (30), means for filling the container, means for sealing the container Reseal and an aseptic atmosphere to the top opening of the container after the aseptic treatment To protect contamination while it is being fed through the filling device and the closing device, 8. Apparatus according to claim 7, characterized in that the device for aseptic treatment with a nozzle (114), a control unit (110) for the nozzle, a storage container (162) for the aseptic agent and a supply device for supplying a pressure medium is that further a connection system for the aseptic means for connecting the Varatsbehälters with the Control device for the nozzle, a connection system for 909848/0484 " ³⁴ " A 36 857 b - 34 - 28.n ₀ Vember 1968 the aseptic means and the pressure means are provided for connecting the control device to the nozzle, and that the nozzle (114) has a device for forming an aseptic mixture of this pressure medium and this aseptic means and further comprising means for opening and closing controlled by the control means (110) is controllable. 9. Apparatus according to claim 8, characterized in that the device for opening and closing the nozzle (114) is controllable so that the nozzle is opened and closed intermittently when a container is in the treatment position is located 10. The device according to claim 8, characterized in that the device z "to open and close the nozzle (114) is controllable so that the nozzle is continuously open when the device is in operation. 11. The device according to claim 8, characterized in that the means for opening and closing with a control system is provided to the nozzle (114) during operation to keep the device open continuously and to open and close it intermittently when a container is in the treatment position. 12. The device according to claim 7 »characterized in that that the device for removing the aseptic mixture has an inlet, a heater for aseptic heating the air, a fan for drawing the air through the inlet and transporting the air to the heater, a connection means for at least the heated air a nozzle that is adjacent to the inlet 909848/0484 A 36 857 b - 35 - November 28, 1968
ly-35 Direction for treating the container with the aseptic agent is arranged and through which the heated air in the container 30 is inflatable to remove the aseptic mist. 13. The apparatus according to claim 12, characterized in that the connecting device has a heating tube and a housing (232, 244) for hot air, that also the heating tube the heater with the housing (232, 244) "connects, and that this nozzle is attached to this housing and above the Container and is located within the aseptic atmosphere. · 14. Apparatus according to claim 12, characterized in that the housing is provided with a plurality of such nozzles that a guide plate (254) within the housing is arranged between the heating pipe (216) and these nozzles, and that a grid (261) is provided, which is practical fills the entire cross-section of the housing and is arranged between the guide plate and the nozzles. 15 · Device according to claim 7, characterized in that the aseptic atmosphere with a filter device for the air, at least one pipe for passing through the Air ', a cover and a housing (212) for the control of the air is provided that also the aseptic Air filter has a motor for conveying the air, through which the air in and through the filter device is movable, in which it is treated aseptically, that also the filter device with the cover through this tube is connected to pass the air, that also the device for discharging the aseptic - 36 -. 909848/0484 A 36 857 b - 36 - November 28, 1968 Mixture is arranged within the housing (212) that the housing (212) is connected to the cover (210) and the air takes in that the housing (212) has an opening in the bottom to the upper opening of the loading • container (30) to receive, and that the air can flow out of this opening to prevent the atmospheric Air enters the containers and pollutes them. 16. The device according to claim 8, characterized in that that the atomizing nozzle (114) is at a predetermined distance from the upper opening of the container (30). is arranged that also the supply and supply device for the pressure medium has a first connecting line which is connected to the storage container for the aseptic Means is connected that this storage container also has a second connecting line, which is connected to the nebulization nozzle in order to supply the aseptic agent to the nozzle, that the supply device furthermore has a third and a fourth connecting line which is connected to the atomizing nozzle are that through the third connecting line the Druckmittel'zu the nozzle can be guided to it with the to mix aseptic agents in order to form an aseptic mixture, which through the fourth connecting line the Pressure medium can be fed to the nozzle in order to open and close the nozzle in order to expel the aseptic mixture, and that the aseptic mixture can be ejected from the open nozzle in the atomized state. 17. The device according to claim 16, characterized in that that a control system for operating the fourth connection line is provided to prevent the passage of the pressure 909848/0484 "- 37 - A 36 857 b - 37 - November 28, 1968
ly-35 by means of the nozzle (114) to regulate the nozzle open and close when a container (30) is in the treatment position. 18. The device according to claim 17, characterized in that the second connecting line through this control system is operable to dispense a predetermined amount of the aseptic agent to each container to be treated, and that the fourth connecting line can be controlled by this control system so that the predetermined amount of the aseptic The nozzle (114) can be fed through it when the Nozzle opens. 19. The device according to claim 18, characterized in that the aseptic agent is hydrogen peroxide. 20. Apparatus according to claim 16, characterized in that a control system is provided for actuating the second connecting line in order to connect to each container to be treated (30) to dispense a predetermined amount of the aseptic agent, and that the fourth connecting line through this Control system is operable to deliver the predetermined amount of aseptic agent through it to the nozzle (114), when this opens. 21. The device according to claim 16, characterized by a control system for actuating the device for the aseptic Treating the containers to keep the nozzle (114) continuously open as the containers pass through it Go through facility. 22. The device according to claim 16, characterized by a control system for actuating the device for the treatment the container to the nozzle (114) both continuously - 38 9 0 9848/0484 A 36 857 b - 38 - November 28, 1968
ly-35 borrowed to be kept open when the containers direction and to open it intermittently and to close when a container is in the position in which it is treated with the aseptic mixture will. 23. The apparatus according to claim 7, characterized by an inlet, an outlet and a filter which is provided with a housing is provided, which has a collar through which the housing into a receiving chamber (278) and a Discharge chamber (279) is divided, a front cover over the receiving chamber of the housing, further in that the inlet is provided with a device for generating the air flow which is in contract with the receiving chamber stands, and through which air can be sucked from the atmosphere and into the receiving chamber, through the filter and is guided into the discharge chamber, from which the air is discharged, and that a disposable filter (284) in the Receiving chamber is arranged, which is in contact with this collar stands, and that finally a permanent filter (285) is arranged in the discharge chamber. 24. The device according to claim 23, characterized by springs, to hold the disposable filter (284) to the collar. 25. The device according to claim 24, characterized by guide rods which are attached to this housing in order to move the . Throwable filter (284) support and removable through Handles (286) connected to the springs for quick release of the disposable filter (284). 26. The device according to claim 23, characterized in that the device for generating an air flow is a continuously has working fan and a flow fan through which air can be guided into the housing, 909848/0484 " ³⁹ ". A 36 857 b - 39 - November 28, 19.68 when the device is in operation, and that continuously working fan air can be continuously fed into this housing in order to prevent atmospheric pressure. fresh air enters the discharge chamber. 27. The device according to claim 23, characterized by a manometer (300), which is connected to the receiving chamber (278) and to the discharge chamber (279), and through which the Differential pressure between intake and discharge chamber can be measured is. 909848/0484