Method and device for filling a container
10836622 ยท 2020-11-17
Assignee
Inventors
Cpc classification
B67C7/00
PERFORMING OPERATIONS; TRANSPORTING
B67C3/225
PERFORMING OPERATIONS; TRANSPORTING
B67C3/10
PERFORMING OPERATIONS; TRANSPORTING
B67C3/2634
PERFORMING OPERATIONS; TRANSPORTING
B67C2003/2697
PERFORMING OPERATIONS; TRANSPORTING
International classification
B67C3/26
PERFORMING OPERATIONS; TRANSPORTING
B67C7/00
PERFORMING OPERATIONS; TRANSPORTING
Abstract
A method for filling a container with a filling product in, for example, a beverage bottling plant is described. The method includes providing a filling product under a positive pressure, evacuating the container to be filled to achieve a negative pressure, and feeding the filling product into the container.
Claims
1. A method for filling a container having a mouth with a beverage, comprising: providing a capping head comprising a capping-head space that is sealed off from an environment outside the capping-head space, wherein the capping-head space accommodates a filling product line having a working end configured to facilitate an evacuation of the container and feeding the beverage into the container, and a capper configured to cap the container; providing a beverage under a positive pressure; sealingly positioning the capping head over the mouth of the container; moving the working end of the filling product line to position the filling product line within the capping-head space; extending the filling product line such that the working end is positioned over the mouth of the container; evacuating, via the working end of the filling product line, the container to achieve a negative pressure; feeding, via the working end of the filling product line, the beverage into the evacuated container; retracting the filling product line within the capping-head space to displace the working end of the filling product line from over the mouth of the container; after feeding the beverage into the container, capping, via the capper, the container without depressurization of the container to ambient pressure; and discharging the capped container from the capping-head space.
2. The method of claim 1, wherein the negative pressure is an absolute pressure of about 0.5 bar to 0.05 bar.
3. The method of claim 1, wherein the positive pressure is an absolute pressure of about 1 bar to 9 bar.
4. The method of claim 1, wherein the positive pressure is an absolute pressure of about 1.1 bar to 6 bar or an absolute pressure of about 1.6 bar to 9 bar.
5. The method of claim 1, further comprising subjecting the container to a pressurizing gas at an absolute pressure of about 3.5 bar to 7 bar after the beverage has been fed in the container.
6. The method of claim 1, further comprising subjecting the container to a pressurizing gas that is provided at a positive pressure that is equal to the positive pressure of the beverage.
7. The method of claim 1, further comprising purging the container with a purge gas before evacuating the container.
8. The method of claim 1, wherein the container is capped at an absolute pressure of about 2 bar to 9 bar.
9. The method of claim 1, further comprising introducing the container into an evacuable chamber before the container is evacuated.
10. The method of claim 1, wherein the filling product line supplies a vacuum, the beverage, and a pressurizing gas.
11. The method of claim 1, further comprising metering one or more of a flavoring additive, a beverage additive, or a beverage ingredient into the container.
12. A device for filling a container having a mouth comprising: a beverage supply configured to supply a beverage; a capping head comprising a capping-head space that is sealed off from an environment outside the capping-head space, wherein the capping-head space accommodates a filling product line, a capper, and the mouth of the container, the filling product line in fluidic communication with the container and configured to facilitate an evacuation of the container and feeding the beverage into the evacuated container; a vacuum device configured to evacuate the container; a control device configured to control the vacuum device and the beverage supply, wherein the control device instructs the vacuum device to evacuate the container before the beverage is introduced into the evacuated container; and, the capper configured to cap a filled container without depressurization of the filled container to ambient pressure; wherein: the filling product line includes a working end configured to move within the capping-head space to fluidicly connect and disconnect the container from the filling product line, and the capper is configured to be raised and lowered within the capping-head space to connect and disconnect the container from the capper.
13. The device of claim 12, wherein the beverage supply is configured as a beverage reservoir having a gas space or as a voidlessly filled line.
14. The device of claim 12, further comprising a flavoring meter for metering one or more of a flavoring additive, a beverage additive, or a beverage ingredient into the container.
15. A method for filling a container having a mouth with a beverage, comprising: providing a capping head comprising a capping-head space that is sealed off from an environment outside the capping-head space, wherein the capping-head space accommodates a filling product line having a working end configured to facilitate an evacuation of the container and feeding the beverage into the container, and a capper configured to cap the container; sealingly positioning the capping head over the mouth of the container; extending the filling product line to position the working end of the filling product line within the capping-head space; fluidicly connecting the container to the filling product line; evacuating, via the filling product line, the container to achieve a negative pressure; feeding, via the filling product line, the beverage provided under a positive pressure into the evacuated container; retracting the working end of the filling product line within the capping-head space to fluidicly disconnect the container from the filling product line; lowering the capper onto the container mouth in the capping-head space; capping, via the capper, the container without depressurization of the container to ambient pressure; and raising the capper off the container in the capping-head space.
16. The method of claim 1, wherein during feeding of the beverage into the evacuated container, there is only fluid flow into the container and the feeding of the beverage is carried out with the entire cross section of the mouth of the container being utilized.
17. The device of claim 12, wherein the filling product line has the same cross section as the cross section of the mouth of the container.
18. The method of claim 15, wherein during feeding of the beverage into the evacuated container, there is only fluid flow into the container and the feeding of the beverage is carried out with the entire cross section of the mouth of the container being utilized.
Description
BRIEF DESCRIPTION OF THE DRAWINGS
(1) Further embodiments and aspects of the present invention are explained in more detail by the following description of the figures.
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DETAILED DESCRIPTION
(26) Examples of embodiments are described in the following text with reference to the figures. Here, identical, similar or functionally identical elements are designated by identical reference signs in the various figures and a repeated description of these elements is to some extent dispensed with in the following description, in order to avoid redundancies.
(27)
(28) Depending on the respective filling product 110 to be bottled, an appropriate gas or gas mixture is present in the gas space 20. For example, in the case of a carbonated beverage to be bottled, the gas space 20 may contain CO.sub.2, which is generally under positive pressure, with the result that the CO.sub.2 bound in the carbonated beverage is not liberated. Furthermore, the oxygen can be displaced from the gas space 20 by the CO.sub.2, such that scarcely any oxygen or no oxygen is present in the filling-product reservoir 2, this being generally in the case of oxygen-sensitive filling products such as beer, for example. When still beverages are bottled, it is also possible for a different inert gas to be present in the gas space 20, this allowing a particularly gentle handling of the filling product 110.
(29) A filling-product line 3, which includes a centering bell 30, is schematically shown in the figure. The container 100 to be filled is pressed against the centering bell 30 in a sealing manner by way of its mouth 102, such that a gastight and liquid-tight connection is formed. Accordingly, a gastight and liquid-tight connection exists between the filling-product line 3 and the interior of the container 100 by means of the centering bell 30.
(30) Via a filling-product valve 32, the filling product 110 can pass from the filling-product reservoir 2 via the filling-product line 3 and into the interior of the container 100. The filling-product valve 32 controls the start and end of filling such that the container 100 is filled with a predetermined quantity of filling product 110.
(31) The end of filling and thus the closing of the filling-product valve 32 can be determined for example by the reaching of a predetermined filling level N in the container 100, by the reaching of a predetermined filling weight and/or by the reaching of a predetermined filling volume. As a further possibility, provision can also be made of a metering chamber into which the filling product is pre-metered and then is likewise present in this metering chamber under the positive pressure. When the metering chamber has been emptied, the filling operation ends.
(32) As a further possibility for determining the end of filling, the pressure progression in the container 100 to be filled can be taken into consideration during the operation of filling with the filling product 110 and the filling operation and the end of filling can be controlled on the basis of the pressure progression. For example, the end of filling can be reached when a particular pressure in the interior of the container 100 is exceeded. To this end, a pressure sensor 38 which monitors the pressure conditions in the container 100 during the filling operation can be provided in the filling-product line 3.
(33) A flow control valve 36 by means of which the maximum flow rate with the filling-product valve 32 opened can be controlled can be provided upstream of the filling-product valve 32 in the product-conducting line. By means of the flow control valve 36, the course of the filling operation can be influenced deliberately and for example only a reduced flow can be provided towards the end of the filling operation, in order for example to allow the end of filling to be reached in a precise manner.
(34) Provision is furthermore made of a vacuum device 4 which is likewise able to be brought into communication with the filling-product line 3, and thus also with the interior of the container 100, via a vacuum valve 40. By means of the vacuum device 4, the interior of the container 100 can be evacuated and accordingly the gas in the interior of the container 100 pumped out. The pressure that is able to be provided in the interior of the container 100 by way of the vacuum device 4 is in one embodiment at an absolute pressure of about 0.5 bar to 0.05 bar, in a further embodiment about 0.3 bar to 0.1 bar, and in another embodiment about 0.1 bar. Accordingly, a large part of the gas located in the container interior can be pumped out by means of the vacuum device 4.
(35) The gas space 20 of the filling-product reservoir 2 is subjectable to a positive pressure via a pressure line 22, such that the filling-product reservoir 2 as a whole is under pressure. The gas accommodated in the gas space 20 of the filling-product reservoir 2 is typically an inert gas and in certain embodiments CO.sub.2, in particular when the filling product 110 is a carbonated beverage, for example beer, a soft drink or mineral water.
(36) When the filling product 110 is a carbonated filling product, such a pressure can be provided in the gas space 20 above the filling product 110 by the supply of CO.sub.2 via the pressure line 22 that the CO.sub.2 is prevented from being liberated from the filling product 110. Provision is generally made here of an absolute pressure of about 1 bar to 9 bar, in one embodiment an absolute pressure of about 2.5 bar to 6 bar, and in another embodiment, an absolute pressure of about 2.8 bar to 3.3 bar is maintained in the gas space 20.
(37) In one embodiment, the filling product 110 is provided in the filling-product reservoir 2 at a positive pressure that corresponds to the ambient pressure, generally at an absolute pressure of 1 bar. The filling product 110 can also be provided in the filling-product reservoir 2 at a positive pressure that corresponds to the saturation pressure of the filling product 110, such as at an absolute pressure of about 1.1 bar to 6 bar. In a further embodiment, the filling product 110 can also be provided in the filling-product reservoir 2 at a positive pressure that is above the saturation pressure of the filling product 110, such as at an absolute pressure of about 1.6 bar to 9 bar.
(38) By means of the vacuum device 4, which is able to be brought into fluid connection with the interior of the container 100 via the filling-product line 3, the container 100 can be evacuated prior to the actual operation of filling with the filling product 110. To this end, when the vacuum valve 40 has been opened, the gas which is located in the container 100 is drawn off via the vacuum device 4. When the container 100, for example coming from the ambient atmosphere, is connected to the centering bell 30 the ambient air located in the container 100 is drawn off via the vacuum device 4. If the container 100 has already been subjected to a gas atmosphere, for example an inert gas or CO.sub.2, the vacuum device 4 accordingly pumps this gas atmosphere out of the container 100. The vacuum device 4 is generally configured such that it can provide a considerable negative pressure, for example in the region of an absolute pressure of about 0.5 bar to 0.05 bar, in the container 100.
(39) The valves, in particular the filling-product valve 32 and the vacuum valve 40, are actuated via a control device 7. The control device 7 can be embodied either as an analogue controller or expediently as a programmed controller, for example in the form of a PC or industrial PC. The control device 7 can also be a module of the overall plant controller of a carousel filler, of a carousel capper or of a filling plant.
(40) The control device 7 is designed to carry out the method described below and is in particular programmed to carry out this method and to control the corresponding plant components. Accordingly, the valves and components are actuated one after another such that the method proceeds in the form described.
(41) In some embodiments, but not shown in the figures, the control device 7 is connected to sensors and transducers which monitor for example the pressure conditions in the container 100 or in the filling-product line 3 connected to the container 100 and in the filling-product reservoir 2.
(42) The filling method which can be carried out by means of the device 1 according to
(43) In an embodiment that is not shown in the figure, the filling-product supply 2 can also be provided in the form of a line in which the filling product 110 is conducted under pressure. Use can in some embodiments be made here of what is referred to as a voidlessly filled line, e.g., a line that is filled completely and without a gas space.
(44) In order to fill a container 100 with the filling product 110, the interior of the container 100 is evacuated via the vacuum device 4 with the filling-product valve 32 closed and the vacuum valve 40 opened and accordingly brought to a negative pressure. Once the predetermined negative pressure, for example about 0.1 bar, in the container 100 has been reached, the vacuum valve 40 is closed and the filling-product valve 32 opened. On account of the large pressure difference between the interior of the container 100, in which a negative pressure prevails, and the filling-product reservoir 2, in which a positive pressure prevails, the container 100 is abruptly filled with the filling product 110. The filling operation can thus be carried out very quickly and is accordingly also ended quickly.
(45) Since, during the filling operation, on account of the negative pressure already provided in the container 100, no gas is displaced out of the container 100, at least in the first phase of filling, when the filling product 110 flows in, but rather only the negative pressure is reduced, the filling product can also flow into the container 100 via the entire mouth cross section d of the mouth 102 of the container 100.
(46) In this way, when the container 100 is being filled with the filling product 110, the filling operation can be effected, at least over the greatest part of the filling operation, with a fluid flow in only one direction, namely a fluid flow which is directed only into the container 100. No counterflow of fluid, for example of a gas, takes place, since no displacement of gas out of the container 100 into the filling-product line 3 and/or into the filling-product reservoir 2 takes place. Rather, as a result of the filling of the container 100 only the negative pressure in the container 100 is slowly reduced. Only towards the end of the filling operation, when the pressure slowly rises in the headspace K of the container 100, i.e., the space located above the filling level N of the filling product 110 in the container 100, and possibly the pressure conditions in the container 100 are equalized with the pressure conditions in the filling-product line 3, will the inflow of the filling product 110 out of the filling-product reservoir 2 slow down.
(47) Depending on the respective negative pressure provided in the container 100, such slowing down can be avoided, however. The lower the pressure in the container 100 to be filled, the less significant the slowing down will turn out to be, since at a lower pressure of the container 100 to be filled, a significant negative pressure still prevails in the container 100 even at the time that the filling-product valve 32 is closed.
(48) Therefore, the time at which slowing down occurs depends on the negative pressure in the container 100 and thus on the design of the vacuum device 4. The lower the pressure in the container 100 is, the later equalization of the pressure conditions occurs; or, in the extreme case of a particularly high vacuum in the container 100, equalization of the pressure conditions does not occur at all, but rather a negative pressure will still exist in the headspace K even when the desired filling level N has already been reached and the filling-product valve 32 has already been closed.
(49) The positive pressure in the filling-product reservoir 2 remains substantially constant over time. By contrast, during filling, the pressure in the container 100 rises on account of the filling product 100 flowing in. If the negative pressure in the container 100 to be filled is selected such that towards the end of the filling operation the pressure in the container 100 and in particular in the headspace K has exceeded a particular level, regulation of the filling-product flow flowing into the container 100 can be achieved as a result of the rising pressure. Accordingly, the filling-product flow slows down towards the end of the filling operation, such that the reaching of an end of filling can be easily supported and the filling-product valve 32 can then be closed.
(50) Accordingly, by means of the device 1 shown in
(51) As a result, it is possible to achieve the filling of the container 100 in very short filling times, for example when a conventional 0.5 L beer bottle is filled in a filling time of 0.3 seconds. By comparison, the filling times for an identical beer bottle in the counterpressure method are in the region of 4.5 seconds on account of a hydrostatic pressure. Accordingly, abrupt filling of the container 100 to be filled can be achieved with the described method, and so the filling process as a whole can be carried out more quickly. This can result either in greater capacity for a given filler size, or a filler, for example a rotary filler, can be configured with smaller dimensions and a reduced number of filling stations.
(52) In various embodiments, the number of filling stations corresponds substantially to the number of capping stations. In one embodiment, the number of filling stations corresponds to 1 to 2 times the number of capping stations. In this way, a particularly compact filling plant can be provided.
(53)
(54) By means of the pressurizing-gas device 5, with the pressurizing-gas valve 50 opened, CO.sub.2, for example, can be introduced into the container 100 via the filling-product line 3. The pressurizing gas used can also be some other inert gas. The pressurizing gas can be applied to the filled container 100 at an absolute pressure of about 2 bar to 9 bar, generally at an absolute pressure of about 3.5 bar to 7 bar, and in some embodiments at an absolute pressure of about 3.8 bar to 5.5 bar.
(55) In some embodiments, the pressurizing-gas device 5 is connected to the gas space 20 of the filling-product reservoir 2. The gas to be supplied to the container 100 in this way is accordingly under the same pressure as the gas accommodated in the gas space 20 and is accordingly also the same gas.
(56) A filling method, which represents a development of the filling method described with respect to
(57) Once the pressurizing gas has been fed in via the pressurizing-gas device 5, the pressurizing-gas valve 50 is closed again and the vacuum valve 40 is opened again, such that the gas mixture can again be drawn out of the container 100 via the vacuum device. In this way, when the pressure in the container 100 is again reduced to about 0.1 bar, a 99% reduction in the oxygen content in the container 100, compared with the initial state, is achieved.
(58) Then, the container 100 evacuated in this way and accordingly under negative pressure is abruptly filled with the filling product 110 from the filling-product reservoir 2 after the vacuum valve 40 is closed and the filling-product valve 32 opened, as described with respect to
(59) In certain embodiments, after the filling-product valve 32 has been closed, the pressurizing-gas valve 50 can be opened again and pressurizing gas fed into the filling-product line 3 via the pressurizing-gas device 5. As a result, the negative pressure still present in the headspace K or in the container 100 is reduced and instead a positive pressure is built up or a positive pressure already present in the headspace K is increased further. At the same time, residual filling product located in the filling-product line 3 is pushed into the container 100 by the pressurizing gas flowing in. In particular in the case of filling a filling product 110 with a high foaming tendency, following the abrupt filling of the container 100 with the filling product it is possible for filling-product foam still to be present in the filling-product line 3 and the headspace K of the container 100. As a result of the pressurizing-gas valve 50 being opened and the filling-product line 3 and the headspace K being subjected to the pressurizing gas, this foam can be pushed back into the container 100, such that essentially no filling product, and in particular no filling-product foam, is present in the filling-product line 3 anymore.
(60) When the container 100 or the headspace K of the container 100 is subjected to a pressurizing gas, for example CO.sub.2, at increased pressure, for example at about 1.1 to 3 bar, in one embodiment at 2 bar, it is furthermore possible to prevent the liberation of a carbonated filling product 110 in the container 100, or renewed binding of CO.sub.2 liberated during the filling operation can be supported by the increased pressure.
(61) Filling is then concluded.
(62)
(63) This results, at a filling level N that has been reached, in a headspace K which is between the maximum filling height A of the container 100 and the filling level N. A foam space C, which corresponds to the volume between the filling level N and the filling-product valve 32 and the shut-off valve 34, is furthermore formed. Accordingly, the foam space C has a volume which corresponds to the headspace K plus the portion of the filling-product line 3 between the mouth 102 of the filled container 100 and the filling-product valve 32 and the shut-off valve 34.
(64) The foam space C should generally be kept as small as possible in order, in the case of the abrupt filling of the container 100 with the filling product 110, for only a limited quantity of foam to be present in particular when a carbonated filling product 110 is bottled. As a result of the foam space C or the filling-product line 3 being subjected to the pressurizing gas, for example CO.sub.2, from the pressurizing-gas device 5, said pressurizing gas being under positive pressure, it is accordingly possible for the foam to be pushed out of the foam space C into the container 100. By minimizing the foam space C it is possible here for all of the foam to already be pushed into the container 100 by means of a moderate predetermined positive pressure via the pressurizing-gas device 5. Furthermore, the filling precision is also increased when the foam space C contains only a moderate volume. The residual filling product located in the foam space C then only insignificantly influences the filling level N after the filling-product valve 32 is shut-off, and so precise filling becomes possible.
(65) In some embodiments, the ratio of foam space C to the headspace K is about 1.1 to 3, for example about 2, such that it is possible to introduce all of the filling-product foam into the container 100 by feeding in the pressurizing gas.
(66)
(67) The container 100 to be filled is held with its mouth region 102 against the capping head 6 in a sealed manner. To this end, the capping head 6 has a container seal 600 which accordingly comes into contact with the mouth region 102 of the container 100 in a sealing manner. The capping head 6 has a capping-head space 60 which is in communication with the interior of the container via the mouth projecting into the capping-head space 60.
(68) Provision is likewise made of a filling-product line 3 which has a centering bell 30 that has a seal 300 which is placeable in a sealing manner against the mouth 102 of the container 100 in order to provide a gastight and fluid-tight connection. Accordingly, as is shown in other embodiments in the present figures, fluid-tight and gastight sealing of the filling-product line 3 with the interior of the container 100 can be carried out. The filling-product line 3 can be displaced in the displacement direction X together with the centering bell 30 such that the filling-product line 3 is advanced together with the centering bell 30 so that it is placed in a sealing manner directly on the mouth 102 of the container 100. However, in the state shown in
(69) The passage of the filling-product line 3 into the capping-head space 60 is sealed via filling-product-line seals 620, such that the capping-head space 60 is sealed off from the environment even when the fluid-product line 3 is displaced in the displacement direction X.
(70) In the exemplary embodiment shown, provision is furthermore made of a capper 62 which holds a container cap 104 via a magnet 622, wherein the container cap 104 is configured in the form of a crown cap in this case. The capper 62 can be lowered and raised in the stroke direction Y, wherein the capper seals the capping-head space 60 off from the environment via a capper seal 640.
(71) The capper 62 is arranged coaxially with the container axis 106 of the container 100 and thus also coaxially with the mouth 102 of the container 100 in order to be able to apply the container cap 104 reliably to the container 100.
(72)
(73) In the opened position, shown in
(74) The filling method accordingly occurs in such a way that, as is shown schematically for example in
(75) The actual filling operation then accordingly proceeds in the manner already described with respect to
(76) Once the filling-product valve 32 has been closed again after the end of filling has been reached, a pressurizing gas is applied via the pressurizing-gas device 5 such that foam possibly located in the foam space is pushed completely into the container 100 and accordingly a positive pressure is built up in the headspace of the container 100.
(77) When the desired positive pressure in the container 100 has been achieved, the sealing of the centering bell 30 with the interior of the container 100 is removed, for example by lifting off the centering bell 30. Then, the filling-product line 3 is retracted such that the centering bell 30 is retracted into the parked positioned shown for example in
(78) The capping-head space 60 is now likewise subjected to the pressurizing gas, since when the filling-product line 3 is retracted, the filling-product line 3 then becomes fluidically connected to the capping-head space 60. Accordingly, in the retracted position of the centering bell 30, as is shown in
(79) Accordingly, when the centering bell 300 is detached, the pressure present in the container 100 is not relieved, but rather the pressure applied by the pressurizing-gas device 5 continues to be maintained and applied to the interior of the container 100. This is achieved in particular in that the interior of the container 100 communicates with the capping-head space 60. Thus, it is accordingly possible to avoid CO.sub.2 being liberated or filling product shooting out of the mouth 102 of the container 100, and for the same state to be maintained which is achieved after the abrupt filling of the container 100 and the subsequent subjecting of the headspace of the container 100 to the pressurizing gas. In other words, it is possible to avoid the filling product running over or foaming over or shooting out, since the pressure level in the container 100 is not changed even when the connection of the filling-product line 3 is detached from the mouth 102.
(80) Once the filling-product line 3 has then been retracted and the centering bell 30 accordingly arranged in the parked position shown in
(81) As soon as the container cap 104 has been applied to the container 100, the pressure in the capping-head space 60 can be released. This is achieved in the exemplary embodiment shown in that the capping-head jaws 64, 66 are opened. Then, the fully filled and capped container 100 can be discharged.
(82) The capping-head jaws 64, 66 are, as already described above, provided with a multiplicity of seals which make it possible to provide both secure sealing of the mouth region 102 of the container 100 and also secure sealing with respect to the movable filling-product line 3 or with respect to the capper 62 when the capping-head jaws 64, 66 are arranged in the closed position, as shown for example in
(83) The filling-product line 3 together with the centering bell 30 and the capper 62 remain roughly in the same position when the capping-head jaws 64, 66 are opened and closed. In the opened position of the capping-head jaws 64, 66 it is not only possible for the container 100 to be filled to be received, but also for a new container cap 104 to also be transferred to the capper 62.
(84) As a result of the arrangement of the capper 62 and of the filling-product line 3 together with the centering bell 30 in the closed-off capping-head space 60, it is accordingly possible for the container 100 to be able to be capped once the container 100 has been filled, without the container 100 being relieved of pressure or without the pressure conditions changing between filling and capping.
(85) A positive pressure is generally present in the capping-head space 60. This positive pressure can be at an absolute pressure of about 2 bar to 9 bar, for example at a positive pressure with an absolute pressure of about 2.5 bar to 6 bar, or at a positive pressure which corresponds to the saturation pressure of the filling product 110, for example at an absolute pressure of about 1.1 bar to 6 bar, or at a positive pressure which is above the saturation pressure of the filling product 110, for example at an absolute pressure of about 1.6 bar to 9 bar. As a result of the abovementioned positive pressures, in particular when CO.sub.2 is used as pressurizing gas, it is possible to prevent the CO.sub.2 from being liberated from the carbonated, abruptly bottled filling product 110, and so accordingly the filling product 110 can be prevented from foaming over, running out or shooting out of the mouth 102 of the container 100 after the centering bell 30 is removed.
(86) By way of the described arrangement, a combined system of capper and filler is provided, wherein the number of filling members corresponds substantially to the number of capping members. In some embodiments, the number of filling stations corresponds to 1 to 2 times the number of capping stations. In one embodiment, filling members and capping members can also be provided in different carousels, wherein, however, the number of filling members and of capping members is substantially the same.
(87) The different method steps, for example the opening and closing of valves, the advancing or retracting or pivoting of the centering bell 30, the raising and lowering of the capper 62 or the opening and closing of the capping-head jaws 64, 66 are controlled as a whole, or at least to a significant extent, via the control device 7. The control device is designed and configured such that the method steps proceed as described.
(88)
(89) In the exemplary embodiment shown, there continues to be a filling-product valve 32, which is configured as a bevel-seated valve, and a shut-off valve 34, likewise configured as a bevel-seated valve, which shuts off the combined gas line 45 which allows either the provision of a vacuum or the provision of a pressurizing gas via the filling-product duct 3. The lines and valves extend along the rotation axis 320 in order to achieve a connection of the fluid-conducting lines that is as simple as possible.
(90) Once the filling-product line 3 has been pivoted into its parked position in the exemplary embodiment shown in
(91) It is possible for the foam space C to have only a small volume as a result of the arrangement of the filling-product valve 32 and of the shut-off valve 34 very close to the centering bell 30, this volume allowing precise filling of the container 100 and also allowing complete clearing of the filling-product duct 3 with the pressurizing gas, and thus droplet-free filling.
(92)
(93) In the exemplary embodiment shown in
(94) In an exemplary embodiment that is not shown, a separate chamber is provided for each container 100, said chamber, independently of the capping-head space 60, receiving the container 100 in a space that is sealed off from the environment, but in this case leaving at least the mouth 102 of the container 100 free such that said mouth can dip into the capping-head space 60.
(95) In the separate chamber, in which the container 100 is received, it is likewise possible to apply a negative pressure which can correspond to the negative pressure generated in the container 100. In this way, the same pressure conditions can be created on the inside and on the outside of the container 100 to be filled, such that it is also possible to evacuate containers 100 having soft or flexible walls and accordingly the filling product can be filled into the container subjected to a negative pressure.
(96)
(97) The device 1 includes a filling-product line 3 which has a centering bell 30 which is provided to receive the mouth 102 of the container 100. The filling-product line 3 is displaceable in a displacement direction X in order to be positionable over the mouth 102 of the container 100 and, in the retracted position shown in
(98) In
(99) The filling-product line 3 and the capper 62 extend into a schematically illustrated capping head 6 which encloses a capping-head space 60. The feedthrough of the filling-product line 3 is sealed off in a pressure-tight manner via a filling-product-line seal 620, a pressure-tight feedthrough of the capper 62 is achieved by a capper seal 640 and pressure-tight reception of the mouth 102 of the container 100 is achieved by a container seal 600. In the exemplary embodiment shown in
(100) Accordingly,
(101) The capper 62 naturally moves in the stroke direction Y of the capper 62 along the container axis 106 in order to allow the container cap 104 to be applied to the mouth 102 of the container 100 in a known way. The capper 62 can in this case, as shown in
(102) In order to allow the corresponding application of the container cap 104 to the container 100 or to the mouth 102 thereof, the container receptacle 68 of the capping head 6 is configured such that, together with the container seal 600, it holds the container 100 such that problem-free capping of the container 102 by way of the capper 62 is possible. Firstly, the container receptacle 68, which is indicated only schematically here, is configured such that the mouth 102 is arranged in a substantially centered manner with respect to the capper 62, such that as a result of the capper 62 being lowered in the stroke direction Y, the container cap 104 can be applied directly to the mouth 102. Furthermore, the container receptacle 68 is configured such that a closing force exerted by the capper 62 can be dissipated to the capping head 6 without the container 100 being substantially displaced in the container receptacle 68. In the case of the capper 62 configured as a crown-cap capper, the container 100 is accordingly held in the container receptacle 68 such that a force exerted by the capper 62 on the mouth 102 of the container 100 in the direction of the stroke direction Y can be absorbed.
(103) If the capper 62 is configured as a screw capper for applying screw caps or as a roll-on capper for applying roll-on caps, the container receptacle 68 is accordingly configured such that it can also dissipate the torque introduced via the screw capper such that the container 100 does not rotate or rotates only insignificantly in the container receptacle 68.
(104) Furthermore, the container receptacle 68 is configured such that the mouth 102 of the container 100 protrudes to such an extent into the capping-head space 60 that problem-free capping is allowed without the capper 62 or the container cap 104 butting against structures or internal surfaces of the capping head 6 defining the capping-head space 60.
(105) As already described above, the filling-product line 3 is connected to a filling-product supply in the form of a filling-product reservoir 2 via a filling-product valve 32, to a vacuum device 4 via a vacuum valve 40, and to a pressurizing-gas device 5 via a pressurizing-gas valve 50.
(106) A method for filling a container 100 with a filling product, in particular with a carbonated filling product such as beer, carbonated soft drinks, mineral water, sparkling wines etc., will now be described in the following text.
(107) In
(108)
(109) In
(110) In the next step, which is shown in
(111) Once the negative pressure has been achieved in the container 100 in the step shown in
(112) If, in the method step in
(113) Since the container 100 was not evacuated to an absolute vacuum but is at an absolute pressure of, in one embodiment, about 0.5 bar to 0.05 bar, as a result of the filling with the filling product, the negative pressure in the container 100 is gradually reduced. Since, however, a positive pressure, in one embodiment, of about 1 bar to 9 bar is present in the filling-product supply 2, the pressure gradient between the container 100 and the filling-product supply 2 is ensured even towards the end of the filling operation.
(114) The end of filling and accordingly the closing of the filling-product valve 32 can be determined by various methods. For example, volumetric filling can be accomplished using a flowmeter, or temporal filling, in which the filling-product valve 32 is closed again after a particular opening time.
(115) In an alternative, in order to determine the end of filling, the rise in pressure in the container 100 is determined, and when a particular pressure in the container 100 is exceeded, the filling-product valve 32 is closed.
(116) Once the filling-product valve 32 is closed, the container 100 has been filled with the filling product. However, a carbonated filling product will also display a very high foaming tendency on account of the CO.sub.2 liberated on account of being filled into the container under negative pressure, such that foam is present in the filling-product line 3 and in the headspace K of the container 100.
(117) In
(118) As a result of the filling-product line and the container 100 and in particular the headspace K of the container 100 being subjected to the pressurizing gas, the foam which is still located in the filling-product line 3 is pushed into the container 100 in order in this way to achieve substantial emptying of the filling-product line 3. Furthermore, the headspace K of the container 100 is subjected to the pressurizing gas, with the result that the foam present here, too, is pushed back. Furthermore, on account of the high pressurizing-gas pressure, renewed dissolving of the CO.sub.2 in the filling product which is located in the container 100 is supported and so the filling product settles more quickly.
(119) In the state shown in
(120) Since, in the step shown in
(121)
(122) Accordingly, on account of the capping-head space 60 being subjected to the pressurizing gas under an increased pressure, it is possible that even in the event of the preceding abrupt filling of the container 100 even with carbonated filling products, for example even with beer, foaming over even after a short dwell time of the filling product and a not yet settled or not yet completely settled filling product in which a part of the CO.sub.2 volume has not yet gone back into solution, lifting of the filling-product line 3 can be achieved without the filling product emerging from the mouth 102.
(123)
(124) Accordingly, as schematically shown in
(125) Following completion of the capping operation, as shown in
(126) Subsequently, the capping head can be opened, as shown in
(127) Prior to the venting of the capping-head space 60 in
(128)
(129) In the exemplary embodiment shown, the flavoring metering means 39 leads into the filling-product line 3 such that the supplied flavoring and/or the beverage additive and/or the beverage ingredient passes into the interior of the container 100 along the same path as the filling product supplied via the filling-product line 3.
(130) In the exemplary embodiment shown, the flavoring metering means 39 leads into the filling-product line 3 downstream of the filling-product valve 32, such that flavorings and/or beverage additives and/or beverage ingredients can be metered in even with the filling-product valve 32 closed. Metering in can therefore be carried out prior to the introduction of the filling product from the filling-product supply 2, during the filling of the filling product or following the conclusion of the filling operation. Metering in following the conclusion of the filling operation and after the filling product in the container 100 has settled is generally desired in this case.
(131) The flavoring metering means 39 can in this case be configured for example in the form of a peristaltic pump by means of which precise metering of the respective flavoring or of the respective beverage additive from a corresponding reservoir is possible.
(132) Provision can also be made of a number of flavoring metering means 39, or optionally different flavorings and/or beverage additives and/or beverage ingredients can be supplied by means of one flavoring metering means 39, such that the flavoring metering means 39 is or are designed and can be actuated such that, for each individual filling operation, a different flavoring concentration, beverage-additive concentration or combination of flavorings and/or beverage additives and/or beverage ingredients can be selected. During normal filling operation, however, for reasons of the operational procedure, batches of a first flavor are usually bottled first, before the flavor is changed. The same goes for a change between beverage types, such as between beverages with fruit fibers and beverages without fruit fibers, for example.
(133)
(134)
(135) The flavoring metering means 39 can accordingly be positioned over the mouth of the container 100 in order to meter flavorings and/or beverage additives and/or beverage ingredients into the container 100. In this case, the flavoring metering means 39 can be positioned over the mouth prior to the filling of the container 100 with the filling product or following the conclusion of the filling operation. The filling-product line 3 and the flavoring metering means 39 accordingly alternate in position over the mouth of the container 100.
(136) Where applicable, all individual features which are illustrated in the individual exemplary embodiments can be combined with one another and/or exchanged without departing from the scope of the invention.