DE102007014702A1 - filling system - Google Patents

Abstract

Filling system for a hot filling of a liquid filling material in bottles or the like container with a filling element with a formed in a Füllelementgehäuse liquid channel, which is in communication with a boiler for the contents and forms a Füllgutabgabe at an underside of the filling element, via which the liquid product in each case to be filled, held on a container carrier container flows, with a liquid channel disposed in the liquid valve.

Description

The The invention relates to a filling system according to the preamble Claim 1.

filling systems, especially those for filling of bottles or similar containers with a hot liquid product, d. H. for hot filling z. B. of still drinks or other products are known.

task the invention is to show a filling system, which optionally at least for a cold filling or hot filling is and with which in a hot filling in a particularly simple Way a heating of the filling elements possible is. To the solution This task is a filling system accordingly formed according to claim 1.

For example in filling pauses or if the filling process is interrupted the heating of the filling elements takes place by the hot filling, which the filling elements with closed fluid valves flows through in one in each filling element trained first flow path, The preferred part of the boiler or another reservoir for the filling enclosing Füllgutkreislaufs with your heating or heating system. This is initiated Füllgutstrom or hot circulation of filling material by activating at least one first control valve, which for example in the first flow path each filling element or is provided in a line or connection, also as part of the product cycle for all filling elements a filling machine or for a group of several filling elements is common.

Further developments, Advantages and applications The invention will become apparent from the following description of embodiments and from the figures. All are described and / or illustrated illustrated features for itself or in any combination in principle the subject of the invention, independently from their summary in the claims or their dependency. Also, the content of the claims becomes a part of the description. The invention is in Explained below with reference to the figures of exemplary embodiments. It demonstrate:

1 in a simplified representation of a filling system according to the invention, together with a raised to the filling element of this system bottle;

2 the filling system of 1 in an operating condition with uninterrupted hot filling;

3 similar in a presentation 1 another filling system according to the invention.

4 The filling system of 3 in an operating state with interrupted hot filling.

That in the 1 and 2 generally with 1 designated filling system is part of a filling machine of rotating design for filling a liquid filling in bottles 2 or similar container. The filling system 1 consists essentially of a filling element 3 and from a bottle or container carrier associated with this filling element 4 in the illustrated embodiment for holding the bottles 2 at one below the mouth of the bottle 2.1 formed mouth flange 2.2 serves and this example, fork-shaped. The filling element 3 and the associated container carrier 4 are with a variety of similar filling elements 3 and container carriers 4 on the circumference of a rotatable about a vertical machine axis rotatable rotor 5 provided the filling machine. Above the filling elements 3 is located on the rotor 5 a common boiler for all filling elements 6 , For example, which is designed as a ring boiler and filled level control during the filling operation up to a predetermined level N is filled. In the kettle 6 are thus a gas space 6.1 and a fluid room 6.2 educated. The liquid product is the boiler 6 Controlled supplied via a supply line, not shown.

In a housing 7 of the filling element 3 is a fluid channel 8th trained, over a line 9 with the liquid space 6.2 of the example designed as a ring boiler boiler 6 communicates. In the fluid channel 8th is the liquid valve 10 provided, specifically for controlled delivery of the liquid contents via a discharge opening 11 at the bottom of the filling element from the local open end of the liquid channel 8th is formed.

The liquid valve 10 consists essentially of one in the liquid channel 8th arranged valve body 10.1 that with a valve seat 10.2 interacts. The valve body 10.1 is arranged on a coaxial with the vertical Füllelementachse arranged at both ends open gas pipe 13 formed, which at the same time as a valve tappet for actuating the liquid valve 10 serves and this with an actuator 12 interacts. The lower open end of the gas pipe 13 is from the annular discharge opening 11 enclosed. The upper open end of the gas pipe 13 flows into one in the housing 7 trained gas room 14 , The pressing of the respective bottle 2 with her mouth 2.1 against the filling element 3 takes place in this embodiment, at least supportive by the gas space 14 ruling and on the Anpressgestänge 4.1 of the respective container carrier acting pressure.

The gas space 14 is among other things in the housing 7 trained channels 15 . 16 . 17 connected. These channels are each part of a controlled flow path with control valves 18 . 19 and 20 , In detail is the channel 15 Part of the control valve 18 and a channel 21 having flow path between the gas space 14 and one for all filling elements 3 the filling machine common, on the rotor 5 trained annular channel 22 who has a lead 23 with the gas space 6.1 connected is. The throttled, ie provided with a throttle channel 16 is part of a control valve 19 and the branched channel 21 having flow path between the gas space 14 and the annular channel 22 , The channel 17 is part of a control valve 20 and the branched channel 24 having controlled and throttled flow path between the gas space 14 and one common to all filling elements of the filling machine, on the rotor 5 trained annular channel 26 ,

In addition to the three aforementioned control valves, the filling element 3 a fourth control valve 25 on which together with the branched channel 24 and another channel 27 a controlled connection between the ring channel 26 and the fluid channel 8th forms, in the flow direction in front of the valve seat 10.2 , Via a control device 28 become the control valves 18 . 19 . 20 and 25 , but also the liquid valves 10 the filling machine or the actuators 12 the program according to the respective filling method actuated actuated, namely the liquid valves 10 for a volumetric filling also depending on the measuring signal of a flow meter 29 ,

With the filling system 1 are the different filling methods possible, such as
a one-chamber or multi-chamber pressure filling of CO2-containing products or drinks, such. Soft drinks, beer, carbonated waters,
a pressureless cold filling, for example, still drinks as well
a pressureless hot filling of still drinks.

The procedural process or control steps necessary for the different processes are completely or almost completely in the respective filling element 3 relocated.

The actuating device 12 as well as the control valves 18 . 19 . 20 and 25 or their actuators are each pneumatically operated and are controlled by not shown, electrically controllable valves (solenoid valves). In a filling machine with several filling elements 3 become the actuator 12 as well as the control valve 18 for each filling element individually from the central control unit 28 controlled.

The control valves 19 . 20 and 25 become central for all filling elements depending on the chosen filling process 3 the filling machine controlled together, for example via three solenoid valves, of which one solenoid valve all the control valves 19 , a solenoid valve of all control valves 20 and a solenoid valve of all the control valves 25 associated with the filling machine.

In the initial state, ie in the non-actuated state, the liquid valve 10 as well as the control valves 18 . 19 . 20 and 25 closed. In the following description of the various filling methods and their process steps, the aforementioned valves are also each in their closed state, unless the open state is explicitly stated.

Basically, applies to the control of the aforementioned valves in the various filling method that rule in the pressure filling, ie when filling the Fla 2 under counter pressure the control valves 19 and 25 are constantly closed while the control valve 20 is constantly open. For non-pressurized cold or hot filling is the control valve 20 constantly closed and the control valve 19 constantly open.

With the control valve 25 takes place in the manner described in more detail below during an interruption of the filling process controlled circulation of the hot liquid filling material through the filling elements 3 to heat them or keep them at a temperature necessary for hot filling.

During the individual filling process, therefore, only two valves, namely the respective liquid valve 10 and the control valve 18 the individual filling elements of the filling machine individually controlled. With the other control valves 19 . 20 and 25 done by a central for all filling elements 3 the filling machine common control only the selection of the respective desired mode.

In detail are with the filling system 1 the following procedures are possible:

Single-chamber pressure filling

• 1. Vorspannen: Nach dem Einschieben und Anheben der jeweiligen Flasche 2 in Dichtlage gegen das betreffende Füllelement 3 erfolgt ein Vorspannen der Flasche 2 mit CO2-Gas aus dem Ringkanal 22 durch Öffnen des Steuerventils 18.
• 2. Schnellfüllen: Bei weiterhin geöffnetem Steuerventil 18 wird das Flüssigkeitsventil 12 geöffnet.
• 3. Bremsfüllen: Aufgrund des von dem Durchflussmesser 29 gelieferten Signals wird bei weiterhin noch offenen Flüssigkeitsventil 10 das Steuerventil 18 ge schlossen, sodass der Füllprozess mit reduzierter Füllgeschwindigkeit weitergeführt wird.
• 4. Füllende: Nach Erreichen der vorgegebenen Füllgutmenge wird das Flüssigkeitsventil 10 geschlossen.
• 5. Vorentlasten und Beruhigen: Nach dem Schließen des Flüssigkeitsventils erfolgt über das geöffnete Steuerventil 20 bzw. über die gedrosselte Gasverbindung zwischen dem Gasrohr 13, dem Gasrohr 14 und dem als Rückgaskanal dienenden Ringkanal 26 das Vorentlasten, sodass die betreffende, gefüllte Flasche 2 dann abgesenkt und ausgeschoben werden kann.

In this filling process, the boiler is precipitated up to level N with the contents. The gas space 6.1 of the boiler 6 as well as the over the line 23 with the gas space 6.1 connected ring channel 22 are filled with the pressurized CO2 gas. The ring channel 26 serves as a common return gas channel for all filling elements. The control valve 20 is in this filling process in egg In a constantly open state.

• 1. Preloading: After inserting and lifting the respective bottle 2 in sealing position against the relevant filling element 3 a pretensioning of the bottle takes place 2 with CO2 gas from the annular channel 22 by opening the control valve 18 ,
• 2. Fast filling: With the control valve still open 18 becomes the liquid valve 12 open.
• 3. Brake Filling: Due to the flow meter 29 supplied signal is at still open fluid valve 10 the control valve 18 closed, so that the filling process is continued with reduced filling speed.
• 4. Filling: After reaching the specified amount of filling, the liquid valve 10 closed.
• 5. Pre-relieving and calming: After closing the liquid valve, use the opened control valve 20 or via the throttled gas connection between the gas pipe 13 , the gas pipe 14 and the ring channel serving as a return gas channel 26 the pre-unloading, so that concerned, filled bottle 2 then lowered and ejected.

Pressure-free cold or hot filling

In this filling process is the boiler 6 again filled up to the level N with the liquid contents. The gas space 6.1 and thus also the ring channel 22 are at atmospheric pressure.

• 1. Schnellfüllen: Nach dem Einschieben und Anheben der jeweiligen Flasche 2 in Dichtlage gegen das Füllelement 3 wird bei geöffnetem Steuerventil 18 das Flüssigkeitsventil 10 geöffnet. Die der Flasche 2 über die Abgabeöffnung 11 zufließende Füllgutmenge wird ständig mit dem Durchflussmesser 29 erfasst.
• 2. Die von dem flüssigen Füllgut aus der Flasche 2 verdrängte Luft- oder Gasmenge strömt über das Gasrohr 13, den Gasraum 14 und die von den geöffneten Steuerventilen 18 und 19 gebildeten Strömungswege in den über die Leitung 23 mit dem Gasraum 6.1 des Kessels 6 verbundenen Ringkanal 21.
• 3. Bremsfüllen: Bei weiterhin geöffnetem Flüssigkeitsventil 10 wird das Steuerventil 18 geschlossen, sodass die aus der Flasche 2 durch das zufließende Füllgut verdrängte Luft oder Gasmenge nur noch über die gedrosselte Verbindung bzw. den gedrosselten Strömungsweg des geöffneten Steuerventils 19 in den Ringkanal 22 strömen kann.
• 4. Füllende: Nach Erreichen der gewünschten Füllgutmenge folgt das Schließen des Flüssigkeitsventils 10 sowie im Anschluss daran das Absenken und Ausschieben der jeweils gefüllten Flasche.

The control valve 19 is in this filling process in a constantly open state.

• 1. Fast filling: After inserting and lifting the respective bottle 2 in sealing position against the filling element 3 is when the control valve is open 18 the liquid valve 10 open. The bottle 2 over the delivery opening 11 Inflowing product quantity is constantly with the flow meter 29 detected.
• 2. The of the liquid contents of the bottle 2 displaced air or gas flow over the gas pipe 13 , the gas space 14 and those of the open control valves 18 and 19 formed flow paths in the over the line 23 with the gas space 6.1 of the boiler 6 connected annular channel 21 ,
• 3. Brake filling: With the fluid valve still open 10 becomes the control valve 18 closed, leaving the bottle 2 by the inflowing medium displaced air or gas only through the throttled connection or the restricted flow path of the open control valve 19 in the ring channel 22 can flow.
• 4. Filling: After reaching the desired volume, the liquid valve closes 10 and then lowering and pushing out the filled bottle.

The pressureless filling described above can be carried out especially as a hot filling, in particular for the hot sterile filling of products such. B. juices. In this case, the liquid product is in the boiler 6 provided in the hot state, using a corresponding heater and / or in that the boiler 6 Part of a heating device enclosing circuit in which the contents rotates to heat and maintain the required temperature.

During normal filling operation then the filling elements 3 through which these filling elements or their fluid channels 8th heated hot fill material heated and maintained at a required temperature, so that the liquid product with a sufficiently high, a germ-preventing temperature in the respective bottle 2 is introduced.

To cool the filling elements 3 to avoid an interruption of the filling process, it is necessary in the hot filling, but at least expedient the filling elements 3 to keep it at the required temperature by supplying heat. This is with the filling system 1 thereby possible that at an interruption of the filling process and with closed liquid valves 10 all filling elements the control valves 25 the filling elements are opened, so that the hot liquid product from the boiler 6 through which the open control valve 25 included and from the channels 27 and 24 formed compound in the annular channel 26 flows and from there via a return line 30 , in which, for example, a product pump is arranged in the ring bowl 6 or in the local liquid space 6.2 is attributed to, as in the 2 is indicated by the arrows A.

The 3 shows as a further embodiment, a filling system 1c , which is designed for a pressureless filling, in particular for a pressureless hot filling. The filling system 1a is different from the filling system 1 First, by having four control valves instead 18 . 19 . 20 and 25 and the associated controllable connections only a control valve 31 is provided, which part of one of the channels 15 and 21 having controllable connection between the gas space 13 and the annular channel 22 is. Parallel to the control valve 31 is a throttled connection 32 , With the control valve 31 Be fast filling (with open control valve 31 ) and slow filling (with the control valve closed 31 ) controlled. In the case 7a of the filling element 3a is a channel 33 formed, which the liquid channel 8th each filling element 3a With the common ring channel 26 connects and into the fluid channel 8th in the flow direction in front of the valve seat 10.2 of the liquid valve 10 empties. In the channel 33 is a check valve 34 provided, which for a flow direction from the liquid channel 8th in the ring channel 26 opens, for a flow in opposite direction but locks. To the ring channel 26 leads a line 34 with an electrically controllable valve or solenoid valve 35 ,

The unpressurized filling of a hot filling in the bottles 2 done with the filling system 1a or filling element 3a in an analogous manner as above for the filling system 1 was described, with the throttled channel 32 in terms of its function, that of the open control valve 19 formed throttled connection corresponds. The individual process steps are therefore:

• 1. Schnellfüllen: Für das Füllen wird gesteuert durch die Steuereinrichtung 28 das Flüssigkeitsventil 10 über das Betätigungselement 12 geöffnet. Gleichzeitig wird auch das Steuerventil 31 geöffnet. Die der Flasche zufließende Füllgutmenge wird mit dem Durchflussmesser 29 erfasst. Die durch das flüssige Füllgut aus der Flasche 2 verdrängte Luft- oder Gasmenge strömt über den Kanal 15, das geöffnete Steuerventil 31, teilweise auch über den gedrosselten Kanal 32 und den Kanal 21 in den Ringkanal 22.
• 2. Bremsfüllen: Gesteuert durch das von dem Durchflussmesser 29 gelieferte Messsignal wird von der Steuereinrichtung 28 das Steuerventil 31 geschlos sen, sodass die durch das flüssige Füllgut aus der Flasche 2 verdrängte Luft- oder Gasmenge nur noch über den gedrosselten Kanal 32 und den Kanal 21 in den Ringkanal 22 strömen kann und somit ein Bremsfüllen mit reduzierter Füllgeschwindigkeit (der Flasche zufließende Füllgutmenge je Zeiteinheit) erfolgt.
• 3. Füllende: Veranlasst durch das von dem Durchflussmesser 29 gelieferte Signal wird über die Steuereinrichtung 28 das Flüssigkeitsventil 10 geschlossen, sobald die erforderliche Füllgutmenge in die Flasche 2 eingebracht ist. Im Anschluss daran erfolgt dann das Absenken der gefüllten Flasche 2 mit dem Behälterträger 4 sowie das Ausschieben dieser Flasche am Behälterauslauf der Füllmaschine.

When initially closed control valve 31 and closed liquid valve 10 the insertion and lifting of the bottle to be filled takes place 2 against the filling element 3a so the bottle mouth 2.1 close to the discharge opening 11 or abuts against the local seal.

• 1. Fast filling: For filling is controlled by the controller 28 the liquid valve 10 over the actuator 12 open. At the same time, the control valve 31 open. The amount of product flowing into the bottle is measured using the flow meter 29 detected. The through the liquid contents of the bottle 2 displaced air or gas flow over the channel 15 , the open control valve 31 , partly also over the throttled channel 32 and the channel 21 in the ring channel 22 ,
• 2. Brake filling: controlled by that of the flow meter 29 supplied measuring signal is from the control device 28 the control valve 31 closed, so that the liquid through the product from the bottle 2 displaced air or gas quantity only over the throttled channel 32 and the channel 21 in the ring channel 22 can flow and thus a brake filling with reduced filling speed (the bottle inflowing product quantity per unit time) is done.
• 3. Filling: caused by that of the flow meter 29 The signal supplied is via the control device 28 the liquid valve 10 closed as soon as the required quantity of contents in the bottle 2 is introduced. This is followed by the lowering of the filled bottle 2 with the container carrier 4 and pushing out this bottle at the container outlet of the filling machine.

The above-described filling method is when pressure-free cold filling (Bottling of the contents in the cold state or at ambient temperature) as well as at pressureless hot filling (hot filling), especially at a germ-preventing temperature in principle identical.

To maintain the temperature of these filling elements during an interruption of the filling process is closed with liquid valves 10 all filling elements 3a a filling machine and with the valve open 35 the individual filling elements in turn via the line 9 hot contents from the boiler 6 fed, which the liquid channel 8th as well as the canal 33 under opening the check valve 34 flows through and over the annular channel 26 and the line 34 to the kettle 6 is returned. This circulation of hot liquid filling material through the filling elements 3a is z. B. at an interruption of the filling process and after the closing of all filling elements 3a or their liquid valves started automatically, but in any case before resumption of the filling process by closing the valve 36 interrupted. The ring channel 26 remains filled with the contents.

With the check valve 34 Prevents filling during filling from the annular channel 26 and over this from others to the ring channel 26 connected filling elements via the opened liquid valve 10 in the respective bottle 2 flows and thereby that of the flow meter 29 controlled volumetric filling of the bottles 2 falsified.

For a pressureless cold filling is by suitable measures, for example by an admission of the annular channel 26 held in the closed position with the pressure of a sterile pressure medium, for example, with sterile compressed air or with the pressure of an inert gas or a sterile air or a sterile liquid and thus blocks the connection between the liquid channel 8th and the annular channel 26 ,

The The invention has been described above with reference to exemplary embodiments. It is understood that changes as well as modifications are possible without thereby the inventive concept underlying the invention will leave.

1, 1a

filling system

2

bottle

2.1

bottle mouth

2.2

Mündungsflansch

3, 3a

filler

4

container carrier

5

rotor

6

boiler

7, 7a

casing

8th

liquid channel

9

management

10

liquid valve

10.1

valve body

10.2

valve seat

11

discharge opening

12

actuator

13

gas pipe

14

headspace

15

branched channel

16

channel with throttle

17

channel

18 19, 20

control valve

21

channel

22

annular channel

23

management

24

channel

25

control valve

26

annular channel

27

channel

28

control device

29

Flowmeter

30

management

31

control valve

32

throttled channel

33

channel

34

check valve

35

management

36

control valve

A

flow direction

Claims (22)

Filling system for filling a liquid filling material into bottles or similar containers ( 2 ), with at least one filling element ( 3 . 3a ) with a in a Füllelementgehäuse ( 7 . 7a ) formed product space or liquid channel ( 8th ), with a boiler ( 6 ) is in communication with the contents and at an underside of the filling element ( 3 . 3a ) a Füllgutabgabe ( 11 ) forms over which the liquid product to be filled in each case, on a container carrier ( 4 ) ( 2 ) and with one in the liquid channel ( 8th ) arranged liquid valve ( 10 ), characterized in that for heating or keeping warm the filling element ( 3 . 3a ) during hot filling in the filler housing ( 7 . 7a ) a first flow path ( 24 . 27 ; 33 ) is formed, the one with respect to the flow direction of the liquid filling material in the liquid channel ( 8th ) in front of the liquid valve ( 10 ) subsection ( 8.1 ) of the liquid channel ( 8th ) with one for several filling elements ( 3 . 3a ) common collection channel ( 26 ) and that at least one control valve ( 25 . 36 ) is provided, namely for controlling the flow of a hot liquid filling material from the boiler ( 6 ) through the subsection ( 8.1 ) and the first flow path into the first collection channel ( 26 ). Filling system according to claim 1, characterized in that the at least one first control valve ( 25 ) in the first flow path ( 24 . 27 ) is provided. Filling system according to claim 1 or 2, characterized in that the at least one first control valve ( 36 ) in a to the first collection chamber ( 26 ) connected line ( 35 ) for discharging, for example for returning the filling material to the boiler ( 6 ) is provided. Filling system according to claim 3, characterized in that in a filling machine with a plurality of filling elements ( 3a ) the first control valve ( 36 ) for all filling elements of the filling machine or for a group of several filling elements ( 3a ) is provided jointly. Filling system according to one of the preceding claims, characterized in that in the first flow path ( 33 ) a check valve ( 34 ), which is suitable for a flow out of the liquid channel ( 8th ) of the filling element ( 3a ) in the first collection channel ( 26 ) opens and blocks for a flow in the opposite direction. Filling system according to one of the preceding claims, characterized in that the first flow path ( 24 . 27 ; 33 ) in the immediate vicinity of the liquid valve ( 10 ) or a valve seat ( 10.2 ) of the liquid valve ( 10 ) in the liquid channel ( 8th ) opens. Filling system according to one of the preceding claims, characterized by a return gas channel ( 13 . 14 ), which when filling with the interior of the in sealing position against the filling element ( 3 . 3a ) arranged in connection, by at least a second, and third, in the housing ( 7 . 7a ) of the filling element ( 3 . 3a ) formed flow path ( 15 . 16 . 21 ; 15 . 21 . 32 ), which the return gas channel ( 13 . 14 ) with a second, for a plurality of filling elements ( 3 . 3a ) common collection chamber ( 22 ), and by at least one control valve ( 18 . 19 ; 31 ) for controlled connection of the return gas channel ( 13 . 14 ) with the second collection channel ( 22 ) via the second flow path ( 15 . 21 ) and / or via the third, throttled flow path ( 16 . 21 ; 32 . 21 ). Filling system according to claim 7, characterized in that in the second flow path ( 15 . 21 ) a second control valve ( 18 . 31 ) is provided. Filling system according to claim 7 or 8, characterized in that in the third flow path ( 16 . 21 ) a third control valve ( 19 ) is provided. Filling system according to one of claims 7-9, characterized in that via the third, throttled flow path ( 21 . 32 ) a permanent connection with the return gas channel ( 13 . 14 ) consists. Filling system according to one of the preceding claims, characterized in that the return gas channel from the channel of a gas pipe open at both ends ( 13 ) is formed, whose lower end when filling with the interior of the container ( 2 ) and whose upper end communicates with the second and third flow paths, for example via a housing (in 7 . 7a ) of the filling element ( 3 . 3a ) formed gas space ( 14 ). Filling system according to one of the preceding claims, characterized by a fourth, in the housing ( 7 ) of the filling element ( 3 ) formed flow path ( 16 . 24 ), between the return gas channel ( 13 . 14 ) and the first collection channel ( 26 ) and by a fourth control valve arranged in this flow path ( 20 ), via which in the open state, a connection between the return gas channel ( 13 . 14 ) and the first collection channel ( 26 ) consists. filling system according to claim 12, characterized in that the fourth flow path a restricted flow path is. Filling system according to one of the preceding claims, characterized in that for a non-pressurized filling of the second collecting channel ( 22 ) with the atmosphere and / or with one in the boiler ( 6 ) formed gas space ( 6.1 ). Filling system according to one of the preceding claims, characterized in that the non-pressurized cold or hot filling with constantly open third control valve ( 19 ) he follows. Filling system according to one of the preceding claims, characterized in that for a pressure filling the fourth control valve ( 20 ) is constantly open. Filling system according to one of the preceding claims, characterized in that for a pressure filling the first and third control valve ( 25 . 19 ) are constantly closed. Filling system according to one of the preceding claims, characterized in that for a pressure filling at partially filled with the medium boiler ( 6 ) and an inert gas under filling pressure, for example CO2 gas in a gas space ( 6.1 ) of the boiler ( 6 ) and in which with this gas space ( 6.1 ) second collecting channel ( 22 ) preloading the in sealing position against the filling element ( 3 ) adjacent containers ( 2 ) over the Rückgaska valley ( 13 . 14 ) by opening the second control valve ( 18 ) takes place, namely at serving as return gas collection channel first collecting channel ( 26 ). Filling system according to one of the preceding claims, characterized in that during pressure filling for fast filling the second control valve ( 18 ) is opened and closed for slow filling. Filling system according to one of the preceding claims, characterized in that in a filling machine with a plurality of filling elements ( 3 ) the first and the fourth control valve ( 25 . 20 ) of all filling elements or a group of several filling elements are jointly controllable. Filling system according to one of the preceding claims, characterized in that in a filling machine with a plurality of filling elements all filling elements for a non-pressurized filling by opening the third control valve ( 19 ) or for a pressure filling by opening the fourth control valve ( 20 ) are jointly configurable. Filling system according to one of the preceding claims, characterized in that the first and second collecting channel ( 26 . 22 ) on a rotor ( 5 ) are provided a filling machine.