EP1595794B1 - Procédé et dispositif d'évacuation d'une chambre - Google Patents

Procédé et dispositif d'évacuation d'une chambre Download PDF

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Publication number
EP1595794B1
EP1595794B1 EP05009182A EP05009182A EP1595794B1 EP 1595794 B1 EP1595794 B1 EP 1595794B1 EP 05009182 A EP05009182 A EP 05009182A EP 05009182 A EP05009182 A EP 05009182A EP 1595794 B1 EP1595794 B1 EP 1595794B1
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EP
European Patent Office
Prior art keywords
chamber
vacuum
valve
protective gas
gas
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Not-in-force
Application number
EP05009182A
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German (de)
English (en)
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EP1595794A1 (fr
Inventor
Felix Rudolf Bilz
Sascha Bilz
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BIS Vakuumtechnik GmbH
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BIS Vakuumtechnik GmbH
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Publication of EP1595794A1 publication Critical patent/EP1595794A1/fr
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B31/00—Packaging articles or materials under special atmospheric or gaseous conditions; Adding propellants to aerosol containers
    • B65B31/02—Filling, closing, or filling and closing, containers or wrappers in chambers maintained under vacuum or superatmospheric pressure or containing a special atmosphere, e.g. of inert gas

Definitions

  • the invention relates to a method and a device for evacuating a fillable with inert gas chamber, in particular a sealing chamber of a packaging machine, as it is used primarily for packaging meat and sausage products.
  • Carbon dioxide CO 2
  • Nitrogen N 2
  • gas mixtures of these two components are often used in different compositions.
  • the fresh meat packaging under protective atmosphere with oxygen content is another process that compared to the pure vacuum packaging and the above packaging Under inert atmosphere (nitrogen) or nitrogen / carbon dioxide mixtures increasingly important.
  • An infeed belt feeds the machine into a set of shells.
  • the number of trays per batch depends on the capacity of a sealing chamber in which the trays are evacuated.
  • the product to be packed is inserted manually by personnel next to the inlet section.
  • the batch is transported to the sealing chamber.
  • From a film roll arranged above the sealing chamber the upper film is guided over the shells.
  • Two chamber halves (upper and lower tool) are closed pneumatically.
  • the sealing chamber is pre-evacuated to a certain pressure. This is followed by back-venting the sealing chamber with inert gas to atmospheric pressure. Even during the gassing process, the top film is sealed on the shell and punched out.
  • After opening a ventilation valve for pressure equalization with the environment the chamber tool is opened and the shells are transported to the outlet conveyor of the machine.
  • Statistical monitoring of the gas composition is done by sampling (non-destructive).
  • the disposal of the air in the shells before the fumigation (evacuation) can be done in principle by different process techniques.
  • a separate vacuum pump is operated on each packaging machine.
  • the pump is installed in the immediate vicinity of the sealing chamber, if possible, within the machine.
  • the required end pressures of over 50 mbar allow single-stage disposal of the sealed chambers by means of centralized vacuum pumps.
  • the evacuation takes place only by the pressure equalization with the buffer volume. Any number of machines can be connected to such a system.
  • the vacuum generators are connected to the packaging machines via two piping systems which simultaneously form the required buffer. They permanently evacuate the vacuum systems rough vacuum and fine vacuum, whose dynamic equilibrium pressure is at different levels.
  • the sealing chambers are connected to the vacuum control unit via suitable actuators.
  • a vacuum central system is for example in the EP 0 622 301 B1 shown.
  • the use of a vacuum control unit is recommended when pre-pressures of less than 10 mbar are required and more than about four packaging machines are to be connected to a vacuum system.
  • the U.S. Pat. No. 5,822,951 discloses an oxygen sensor for detecting the oxygen concentration in the atmosphere of a vacuum chamber.
  • the vacuum chamber is evacuated and then filled with inert gas. After filling with inert gas, generating an overpressure, a gas sample is withdrawn from the chamber and fed to the oxygen sensor to determine if the oxygen concentration in the protective gas filled package is low enough to meet the shelf life requirements of the product to meet.
  • the object of the present invention is to propose a method and a device for evacuating a chamber which can be filled with protective gas, in particular a sealing chamber of a packaging machine, wherein the concentration of the protective gas or a gas component of the protective gas flowing to the vacuum source can be reliably determined.
  • the concentration of at least one gas component of the protective gas in the atmosphere of the buffer volume In determining the concentration of at least one gas component of the protective gas in the atmosphere of the buffer volume, a reliable determination of the at least one gas component is possible. Since conventional sensors, in particular if the sensors has a measuring device for determining the oxygen concentration in gases, are highly pressure-dependent, the sensor must comprise a pressure measuring device, by means of which the signal of the measuring device for determining the oxygen concentration is adjusted. With strong fluctuations in pressure, it can take a few seconds before you can determine a reliable value.
  • the buffer volume ensures that the pressure fluctuation in the buffer volume during the pressure equalization between the buffer volume and the chamber is relatively low, so that a reliable value can be determined quickly in the analysis of the gas in the buffer volume.
  • the method is also suitable for individual disposal in which each machine has a own vacuum pump as a vacuum source.
  • the pressure curve when evacuating a volume by means of a vacuum pump behaves exponentially over time. This means that initially a very large pressure drop is achieved, whereas the pressure after initial pressure drop is reduced only very slowly.
  • the initial pressure equalization of the chamber with the buffer volume initially ensures a rapid pressure drop. Then, the residual pressure drop is achieved by means of a vacuum pump, which is much slower, so that the pressure-sensitive sensor is only slightly affected by pressure fluctuations and immediately delivers reliable values.
  • the buffer volume temporarily stores the gas that was initially evacuated from the chamber.
  • the chamber while determining the concentration of at least one gas component of the shielding gas in the atmosphere of the buffer volume, the chamber is temporarily connected to a vacuum source for evacuation.
  • a vacuum source for evacuation.
  • the vacuum source may comprise a vacuum reservoir, wherein continuously the concentration of at least one gas component of the protective gas in the atmosphere of the vacuum reservoir is determined.
  • the vacuum reservoir here is advantageously much larger than the volume of the chamber, as in conventional central vacuum systems, so that only very small pressure fluctuations in the vacuum reservoir occur with a pressure equalization between the chamber and the vacuum reservoir, so that the sensor continuously reproduces reliable values in the vacuum reservoir.
  • monitoring of the vacuum central system is ensured.
  • the protective gas used is gas having an oxygen concentration above the oxygen concentration of air, and when determining the concentration of at least one gas component of the protective gas, the oxygen concentration is determined.
  • the process is stopped when a predetermined oxygen concentration is exceeded.
  • the predetermined oxygen concentration is above the oxygen concentration of air.
  • the buffer volume can be evacuated by means of the vacuum pump, the concentration of at least one gas component of the shielding gas during the pre-evacuation the buffer volume of flowing gas is determined.
  • the gas flowing out of the chamber is reliably analyzed, whereupon the gas buffered in the buffer volume is reliably analyzed, since the pressure in the buffer volume corresponds to the pressure in the chamber after pressure equalization and thus, when the buffer volume is evacuated, a slow pressure drop also takes place, affecting the sensor only negligibly influenced.
  • the object is further encompassed by a device for evacuating a chamber which can be filled with protective gas, in particular a sealing chamber of a packaging machine a buffer volume connectable to the chamber and controlled such that the buffer volume is evacuated prior to connection to the chamber and then temporarily connected to the chamber for pre-evacuation thereof; a vacuum source connectable to evacuate the chamber and controlled so as to be temporarily connected thereto after pre-evacuating the chamber; a sensor for determining the concentration of at least one gas component of the protective gas in the atmosphere of the buffer volume or a supply line to the vacuum source, solved.
  • a device for evacuating a chamber which can be filled with protective gas, in particular a sealing chamber of a packaging machine a buffer volume connectable to the chamber and controlled such that the buffer volume is evacuated prior to connection to the chamber and then temporarily connected to the chamber for pre-evacuation thereof; a vacuum source connectable to evacuate the chamber and controlled so as to be temporarily connected thereto after pre-evacuating the chamber; a sensor for determining the concentration of
  • a protective gas source is provided, which is connectable to the chamber and is controlled so that it is temporarily connected after evacuation of the chamber with this.
  • the senor is arranged in the buffer volume and a separate from the buffer volume vacuum source is provided, wherein the vacuum source may have a vacuum reservoir.
  • the vacuum source comprises a vacuum reservoir whose volume is many times greater than the chamber volume and is evacuated by means of one or more central vacuum pumps.
  • further sensor for determining the concentration of at least one gas component of the protective gas may be arranged in the atmosphere of the vacuum reservoir.
  • the device may be provided such that a vacuum supply line for connecting the chamber to the vacuum source is provided, that a vacuum valve in the vacuum supply line for shutting off the same is provided, that a test chamber is provided which represents the buffer volume and connectable via a test line with the vacuum supply line is, wherein the test line between the vacuum valve and the chamber valve opens into the vacuum supply line, that a sensor for determining the concentration of at least one gas component of the protective gas in the atmosphere of the test chamber is provided that a test chamber valve is provided in the test line for shutting off the same and that Shielding gas valve in the protective gas supply line for shutting off the same and a controller for controlling the valve is provided.
  • a chamber valve in the vacuum supply line to shut off the same is provided.
  • the protective gas source can be connected to the chamber via a protective gas supply line.
  • the test chamber can additionally be connected via a scholarhuntzutechnisch with the vacuum supply line, the für Psychitosus .
  • the für Psychitosus opens between the vacuum valve and the vacuum source in the vacuum supply line.
  • a second test chamber valve for shutting off the für Psychitosus is provided.
  • the senor is provided in a supply line to the vacuum source, which is shown in the form of a vacuum pump.
  • the vacuum source which is shown in the form of a vacuum pump.
  • the object is further encompassed by a device for evacuating a chamber which can be filled with protective gas, in particular a sealing chamber of a packaging machine a buffer volume that is part of a vacuum source and that is connectable to evacuate the chamber and that is controlled such that the buffer volume is pre-evacuated prior to connection to the chamber and then temporarily connected to the chamber, a sensor for determining the concentration of at least one gas component of the protective gas in the atmosphere of the buffer volume of the vacuum source which is arranged in the buffer volume, dissolved.
  • a device for evacuating a chamber which can be filled with protective gas in particular a sealing chamber of a packaging machine a buffer volume that is part of a vacuum source and that is connectable to evacuate the chamber and that is controlled such that the buffer volume is pre-evacuated prior to connection to the chamber and then temporarily connected to the chamber, a sensor for determining the concentration of at least one gas component of the protective gas in the atmosphere of the buffer volume of the vacuum source which is arranged in the buffer volume, dissolved.
  • a protective gas source is provided, which is connectable to the chamber and is controlled so that it is temporarily connected after evacuation of the chamber with this.
  • the sensor preferably has an oxygen probe for determining the concentration of at least one gas component of the protective gas in the atmosphere.
  • FIG. 1 shows a vacuum central system 1, a first packaging machine 2 and a second packaging machine 3.
  • the central vacuum unit 1 is a two-stage vacuum central plant, the first packaging machine 2 disposed of one stage and the second packaging machine 3 is disposed of in two stages.
  • the first packaging machine 2 comprises a sealing chamber 4 for creating protective gas packaging.
  • the sealing chamber 4 usually comprises two mold halves, which can be hermetically sealed against each other and form a space that can be evacuated.
  • a lower film or a tray is arranged in the sealing chamber 4, in which the product to be packaged lies.
  • an upper film is arranged, which is welded to the lower film or the shell after evacuation and, if appropriate, after gasification with protective gas.
  • the sealing chamber 4 is connected via a vacuum feed line 5 to the central vacuum system 1.
  • a chamber valve 6 is provided for blocking the vacuum supply line 5.
  • a pressure transducer 7 is provided in order to determine the internal pressure of the sealing chamber 4 can.
  • the sealing chamber 4 is further connected via a protective gas supply line 8 with a protective gas source 9.
  • a protective gas source 9 Starting from the protective gas source 9, a pressure limiting valve 10, a pressure regulating valve 11 and a protective gas valve 12 in the form of a switching valve are provided in the protective gas supply line 8.
  • the sealing chamber 4 is connected to a venting / venting valve 13 for venting and venting the sealing chamber 4.
  • the central vacuum unit 1 comprises a rough vacuum reservoir 14 and a fine vacuum reservoir 15.
  • the vacuum reservoirs 14, 15 each have a volume which corresponds to a multiple of the volume of the sealing chamber 4.
  • In the rough vacuum reservoir 14 there is generally a pressure of 30 mbar to 40 mbar.
  • In the fine vacuum reservoir 15 there is usually a pressure of 1 mbar to 10 mbar.
  • a first sensor 26 is provided which comprises a first oxygen probe 27 and a first pressure transducer 28.
  • a second sensor 29 is provided, which has a second oxygen probe 30 and a second pressure transducer 31.
  • a lower film or a tray with the material to be packaged and a top film is first introduced into the opened sealing chamber 4. Then, the sealing chamber 4 is hermetically sealed, wherein the vacuum valve 6, the protective gas valve 12 and the vent valve 13 are initially closed. Then, the chamber valve 6 is opened, so that a pressure equalization between the sealing chamber 4 and the rough vacuum reservoir 14 (with which the sealing chamber 4 is connected) is produced, wherein the rough vacuum reservoir 14 serves as a buffer volume.
  • the rough vacuum reservoir 14 was previously evacuated by the vacuum pumps 16, 17 to a predetermined pressure level.
  • the chamber valve 6 is closed again, wherein the chamber valve 6 can be time-controlled or pressure-controlled. That is, either the pressure in the sealing chamber 4 is measured by means of the pressure transducer 7 and upon reaching a predetermined pressure level, the chamber valve 6 is closed or it is waited for a predetermined period of time.
  • the protective gas valve 12 is opened, so that the protective gas source 9 is connected to the sealing chamber 4.
  • the final pressure in the sealing chamber 4 can be regulated by means of the pressure regulating valve 11.
  • the protective gas valve 12 is closed again, wherein the protective gas valve 12 may be pressure-controlled.
  • the vent valve 13 is opened, so that a pressure equalization of the sealing chamber 4 takes place with the ambient pressure and the sealing chamber 4 can be opened to remove the packaging.
  • the second packaging machine 3 is constructed according to the first packaging machine 2, wherein matching components are provided with the same reference numerals. The difference is that the second packaging machine 3 is disposed of in two stages.
  • the vacuum supply line 5 splits in the direction of the central vacuum system 1 in a first arm 32 and a second arm 33, which can be separated by a first vacuum valve 34 and a second vacuum valve 35, respectively.
  • first a rough vacuum in the sealing chamber 4 can be achieved by opening the first vacuum valve 34, so that the sealing chamber 4 is connected to the rough vacuum reservoir 14.
  • the second vacuum valve 35 is opened, so that the sealing chamber 4 is connected to the fine vacuum reservoir 15.
  • the further sequence corresponds to the sequence of the first packaging machine 2.
  • FIG. 2 shows a vacuum central system 101, to which a first packaging machine 102 is connected.
  • the vacuum central plant 101 is like the vacuum central plant according to the embodiment of the FIG. 1 built up.
  • the first packaging machine 102 is similar to the first packaging machine according to the embodiment of FIG. 1 built up.
  • further packaging machines can also be connected to the vacuum central system 101.
  • Components associated with components of the embodiments according to FIG. 1 match, are provided with reference numerals, which are increased by 100. It is in this regard to the comments FIG. 1 directed.
  • the first packaging machine 102 differs from that according to FIG. 1 in that between the chamber valve 106 and the vacuum central system 101, a test chamber 136 is connected in parallel as a puller volume to the vacuum supply line 105.
  • the test chamber 136 is connected via a test line 137 with the vacuum supply line 105 is connected and opens between the chamber valve 106 and the junction with the vacuum central system 101 in the vacuum supply line 105.
  • the test chamber 136 is connected via a scholarschzu réelle 138 with the vacuum supply line 105, wherein the strigcrozu réelle 138 between the junction of the test line 137 and the connection point to the vacuum central system 101st opens into the vacuum supply line 105.
  • a first test chamber valve 139 is provided for shutting off the test line 137. Furthermore, a second test chamber valve 140 for shutting off the test chamber line 138 is provided in the test chamber feed line 138. In addition, a vacuum valve 141 is arranged between the two junctions of the test line 137 and the educacrozu effet 138.
  • a third sensor 142 is provided therein, which comprises a third oxygen probe 143 and a third pressure transducer 144, the third sensor 142 having the same function as the first sensor 126 and the second sensor 129.
  • the vacuum reservoirs 114, 115 of the vacuum central system 101 or, alternatively, only the test chamber 136 are monitored by sensors. Furthermore, it is possible to provide both cumulatively.
  • a lower film or a tray with the material to be packaged and a top film is first introduced into the opened sealing chamber 104. Then, the sealing chamber 104 is hermetically sealed, wherein the chamber valve 106, the shielding gas valve 112 and the venting / venting valve 113 are initially closed. Thereafter, the chamber valve 106 and the first test chamber valve 139 is opened, wherein the second test chamber valve 140 and the vacuum valve 141 remain closed. Since the packaging machine 102 is operated in a clocked manner, the test chamber 136 is evacuated from a previous working cycle, so that a pressure equalization takes place between the buffer volume in the form of the test chamber 136 and the sealing chamber 104. As a result, an atmosphere sample of the gas is taken from the sealing chamber 104.
  • the first test chamber valve 139 is closed, so that the test chamber 136 is sealed airtight. Furthermore, the vacuum valve 141 is opened, so that the sealing chamber 104 is connected to the vacuum central system 101 or to the rough vacuum reservoir 14, so that pressure equalization takes place between the rough vacuum reservoir 114 and the sealing chamber 104. Since, as already described for the previous embodiment, the volume of the large vacuum reservoir 114 is many times greater than the volume of the sealing chamber 104, only a negligible pressure fluctuation takes place in the rough vacuum reservoir 114.
  • the chamber valve 106 is closed by pressure either time-controlled or pressure-controlled by the pressure transducer 107. Then, the shielding gas valve 112 is opened, so that the shielding gas source 109 is connected to the seal chamber 104. In this case, the final pressure in the sealing chamber 104 can be regulated by means of the pressure regulating valve 111. Then the shielding gas valve 112 is closed again, wherein the shielding gas valve 112 may be time or pressure controlled. Subsequently, the venting / venting valve 113 is opened, so that a pressure equalization of the sealing chamber 104 takes place with the ambient pressure and the sealing chamber 104 can be opened again to remove the packaging.
  • the gas in the test chamber 136 is analyzed and the concentration of at least one gas component, usually oxygen, of the protective gas in the gas sample of the test chamber 136 determined. Since a high pressure fluctuation has occurred in the test chamber 136 due to the rapid pressure equalization between the test chamber 136 and the seal chamber 104, the third sensor 142 requires a certain amount of time to provide a reliable value. Since the test chamber 136 is disconnected from the system during the evacuation of the seal chamber 104 by means of the vacuum central equipment 101, the time for the determination of a reliable value is used to evacuate the seal chamber 104.
  • the process is aborted immediately.
  • the vacuum valve 141, the first test chamber valve 129 and the second test chamber valve 140 can be closed.
  • the valves 118, 119 of the vacuum pumps 116, 117 are immediately closed and the vent valves 124, 125 of the vacuum reservoirs 114, 115 are opened in order to prevent further penetration of the oxygen.
  • the remaining gas volume that has passed after the pressure equalization between the test chamber 136 and the sealing chamber 104 during evacuation of the sealing chamber 104 in the rough vacuum reservoir 114 is negligible compared to the volume of the rough vacuum reservoir 114, so that even with a supply of pure oxygen from the Sealing chamber 104 into the rough vacuum reservoir 114, the concentration of oxygen in the rough vacuum reservoir 114 does not exceed the limit. Therefore, the limit of the oxygen concentration at which the process is stopped may be higher in the test chamber than for the vacuum reservoirs 114, 115.
  • sensors 126, 129 in both the rough vacuum reservoir 114 and the fine vacuum reservoir 115 may be provided.
  • the second test chamber valve 140 is opened, the first test chamber valve 139 and the vacuum valve 141 remain closed, so that the test chamber 136 is connected to the rough vacuum reservoir 114 and a pressure equalization takes place, so that the test chamber 136 is again pre-evacuated.
  • the pressure in the test line 137 can be checked by means of a fourth pressure transducer 145 when the first test chamber valve 139, the closed vacuum valve 141 and the closed chamber valve 106 are closed. Occurs then during the filling of the chamber 104 with inert gas, a pressure increase, this is due to a defective chamber valve 106, so that an alarm can be displayed or the procedure aborted.
  • test chamber 136 is pre-evacuated in that, when the chamber valve 106 is closed, the first test chamber valve 139 and the vacuum valve 141 are opened.
  • FIG. 3 shows a packaging machine 202 with individual disposal and largely corresponds to the first packaging machine according to the embodiment according to FIG. 1 , Corresponding components are provided with reference numerals which are increased by the value 200. In this regard, the description is based on FIG. 1 directed.
  • FIG. 3 The embodiment according to FIG. 3 is different from that of FIG. 1 in that no vacuum central system 205 but a decentralized vacuum pump 245 is provided directly on the packaging machine 202.
  • the vacuum pump 245 is connected to the sealing chamber 204 via the vacuum feed line, wherein a vacuum valve 241 is provided between the vacuum pump 245 and the chamber valve 206.
  • a sensor 246 is provided which includes an oxygen probe 247 and a pressure transducer 248.
  • the sensor 246 corresponds to the sensors according to the FIGS. 1 and 2 ,
  • a buffer volume 249 is provided in the form of a buffer chamber, which is connected via a buffer volume supply line 251 to the vacuum supply line 205 and opens between the chamber valve 206 and the vacuum valve 241 in the vacuum line 205.
  • a buffer valve 250 for shutting off the buffer volume supply line 251 is provided in the buffer volume supply line 251 in the buffer volume supply line 251.
  • a lower foil or a shell with the material to be packaged and a top foil are introduced into the opened sealing chamber 204.
  • the sealing chamber 204 is hermetically sealed, wherein the chamber valve 206, the shielding gas valve 212 and the venting / venting valve 213 are initially closed.
  • the chamber valve 206 and the buffer valve 250 is opened, wherein the buffer volume 249 is still pre-evacuated by a previous process cycle. There is thus a pressure equalization between the sealing chamber 204 and the buffer volume 249 instead.
  • the buffer valve 250 is closed and the vacuum valve 241 is opened while the vacuum pump 245 is running, so that the sealing chamber 204 is further evacuated by means of the vacuum pump 245.
  • the gas flowing out of the seal chamber 204 is continuously analyzed with the sensor 246 to immediately detect an increase in the oxygen concentration.
  • the pressure over time runs in the form of an exponential function, ie, in an initial phase of evacuation, the pressure drops rapidly and further Evacuation progressively slower.
  • the initial pressure equalization between the buffer volume 249 and the sealing chamber 204 thus initially ensured a rapid pressure drop, wherein the buffer volume 249 temporarily stores gas emerging from the sealing chamber 204 without conveying it to the vacuum pump 245.
  • the further evacuation by means of the vacuum pump 245 already starts at a low pressure, so that no more large pressure fluctuations occur and a slow evacuation takes place.
  • the pressure variations are significantly less than initially so that the sensor 246 can continuously provide reliable values to shut off the vacuum pump 245 or close the vacuum valve 241 early enough.
  • the chamber valve 206 After evacuating the seal chamber 204, the chamber valve 206 is closed, whereupon the seal chamber 204 is filled with inert gas as in the aforementioned embodiments and then aerated. Meanwhile, the check valve 250 is opened so that the buffer volume 249 is also evacuated by the vacuum pump 245 with the vacuum valve 241 open. Since the pressure in the buffer volume 249 is also lower and corresponds to the pressure in the sealing chamber 204 after pressure equalization between the buffer volume 249 and the sealing chamber 204, no large pressure fluctuations occur when evacuating the buffer volume 249 with the vacuum pump 245, so that the sensor 246 continuously provides reliable values to shut down the vacuum pump 245 early enough or close the vacuum valve 241 early enough before the excessively high oxygen concentration gas reaches the vacuum pump 245. Thus, the buffer volume 249 is again sufficiently pre-evacuated to be able to be connected again after closing the vacuum valve 241 with the sealing chamber 204 in the next process cycle for a pressure equalization.

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  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Vacuum Packaging (AREA)
  • Physical Deposition Of Substances That Are Components Of Semiconductor Devices (AREA)
  • Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)

Claims (21)

  1. Procédé d'évacuation d'une chambre (4, 104, 204) remplie d'un gaz de protection, notamment d'une chambre scellée d'une machine d'emballage (2, 102, 202, 3, 103, 203), comportant les étapes de procédé suivantes consistant à :
    - évacuer un volume tampon (14, 15, 114, 115, 136, 249) au moyen d'une source de vide (1, 101, 245),
    - relier le volume tampon (14, 15, 114, 115, 136, 249) avec la chambre (4, 104, 204) afin d'obtenir un équilibrage de pression entre le volume tampon (14, 15, 114, 115, 136, 249) et la chambre (4, 104, 204),
    - séparer le volume tampon (14, 15, 114, 115, 136, 249) de la chambre (4, 104, 204),
    - déterminer la concentration d'au moins un composant de gaz du gaz de protection dans l'atmosphère du volume tampon (14, 15, 114, 115, 136) ou
    - relier la chambre (204) à la source de vide (245) afin d'évacuer en outre la chambre (204) et déterminer la concentration d'au moins un composant de gaz du gaz de protection dans l'atmosphère du gaz s'écoulant hors de la chambre (204) pendant l'évacuation.
  2. Procédé selon la revendication 1,
    caractérisé en ce que
    après l'évacuation complète de la chambre (4, 104, 204), celle-ci est remplie de gaz de protection.
  3. Procédé selon une des revendications 1 ou 2,
    caractérisé en ce que
    la chambre (104) à évacuer est reliée ponctuellement avec la source à vide (101) pendant la détermination de la concentration d'au moins un composant de gaz du gaz de protection dans l'atmosphère du volume tampon (136).
  4. Procédé selon une des revendications 1 à 3,
    caractérisé en ce que
    la source de vide comprend un réservoir de vide (114, 115) et la concentration d'au moins un composant de gaz du gaz de protection dans l'atmosphère du réservoir de vide (114, 115) est déterminée en continu.
  5. Procédé selon une des revendications 1 à 4,
    caractérisé en ce que
    comme gaz de protection, un gaz ayant une concentration en oxygène supérieure à la concentration en oxygène de l'air est employé et
    lors de la détermination de la concentration d'au moins un composant de gaz du gaz de protection, la concentration en oxygène est déterminée.
  6. Procédé selon la revendication 5,
    caractérisé en ce que
    lorsqu'une concentration d'oxygène prédéterminée est dépassée, le procédé est interrompu.
  7. Procédé selon la revendication 6,
    caractérisé en ce que
    la concentration d'oxygène prédéterminée est supérieure à la concentration en oxygène de l'air.
  8. Procédé selon une des revendications 1 ou 2,
    caractérisé en ce que
    après l'évacuation de la chambre (204), celle-ci est séparée de la source de vide (245) et le volume tampon (249) est relié à la source de vide (245) en vue de l'évacuation et
    la concentration d'au moins un composant de gaz du gaz de protection dans le gaz s'écoulant hors du volume tampon (249) pendant l'évacuation est déterminée.
  9. Dispositif d'évacuation d'une chambre (104, 204) remplie d'un gaz de protection, notamment d'une chambre scellée d'une machine d'emballage (102, 202), comprenant :
    un volume tampon (136, 249), qui peut être relié à la chambre (104, 204) et commandé de telle sorte que le volume tampon (136, 249) soit évacué avant d'être relié à la chambre (104, 204) et soit ensuite relié ponctuellement à la chambre (104,204) en vue de la pré-évacuation de celle-ci,
    une source de vide (101, 245), qui peut être reliée à la chambre (104, 204) afin d'évacuer celle-ci et être commandée de telle sorte qu'elle soit reliée ponctuellement à celle-ci après la pré-évacuation de la chambre (104, 204), ainsi que
    un capteur (142, 246) pour déterminer la concentration d'au moins un composant de gaz du gaz de protection dans l'atmosphère du volume tampon (136) ou d'une conduite d'amenée (205) vers la source de vide (245).
  10. Dispositif selon la revendication 9,
    caractérisé en ce que
    une source de gaz de protection (109, 209) est prévue, laquelle peut être reliée à la chambre (104, 204) et commandée de telle sorte que, après l'évacuation de la chambre (104, 204), elle soit reliée ponctuellement à celle-ci.
  11. Dispositif selon une des revendications 9 ou 10,
    caractérisé en ce que
    le capteur (142) est disposé dans le volume tampon (136) et une source de vide (101) séparée du volume tampon (136) est prévue.
  12. Dispositif selon la revendication 11,
    caractérisé en ce que
    la source de vide (101) comprend au moins un réservoir de vide (114, 115).
  13. Dispositif selon la revendication 12,
    caractérisé en ce que
    dans le réservoir de vide (114, 115), un autre capteur (126, 129) est disposé afin de déterminer la concentration d'au moins un composant de gaz du gaz de protection dans l'atmosphère du réservoir de vide (114, 115).
  14. Dispositif selon une des revendications 9 à 13,
    caractérisé en ce que
    une conduite d'amenée de vide (105) pour relier la chambre (104) avec la source de vide (101) est prévue, une soupape à vide (141) est prévue dans la conduite d'amenée de vide (105) afin de fermer celle-ci,
    une chambre de contrôle (136) est prévue, laquelle représente le volume tampon et peut être reliée via une conduite de contrôle (137) à la conduite d'amenée de vide (105), moyennant quoi la conduite de contrôle (137) débouche dans la conduite d'amenée de vide (105) entre la soupape à vide (141) et la soupape de chambre (106),
    un capteur (142) pour déterminer la concentration d'au moins un composant de gaz du gaz de protection dans l'atmosphère de la chambre de contrôle (136) est prévu,
    une soupape de chambre de contrôle (139) est prévue dans la conduite de contrôle (137) afin de fermer celle-ci et
    une soupape de gaz de protection (112) est prévue dans la conduite d'amenée de gaz de protection (108) afin de fermer celle-ci, ainsi qu'une unité de commande pour commander la soupape.
  15. Dispositif selon la revendication 14,
    caractérisé en ce que
    une soupape de chambre (106) est prévue dans la conduite d'amenée de vide (105) entre la soupape de vide (141) et la chambre (104) afin de fermer la conduite d'amenée de vide (105).
  16. Dispositif selon une des revendications 14 ou 15,
    caractérisé en ce que
    la source de gaz de protection (109) peut être reliée vie une conduite d'amenée de gaz de protection (108) à la chambre (104).
  17. Dispositif selon une des revendications 14 à 16,
    caractérisé en ce que
    la chambre de contrôle (136) peut être reliée via une conduite d'amenée de chambre de contrôle (138) à la conduite d'amenée de vide (105), moyennant quoi la conduite d'amenée de chambre de contrôle (138) débouche dans la conduite d'amenée de vide (105) entre la soupape de vide (141) et la source de vide (101), et
    une deuxième soupape de chambre de contrôle (140) est prévue dans la conduite d'amenée de chambre de contrôle (138) afin de fermer la conduite d'amenée de chambre de contrôle (138).
  18. Dispositif selon une des revendications 9 ou 10,
    caractérisé en ce que
    le capteur (246) est prévu dans une conduite d'amenée (205) vers la source de vide, qui est représentée sous la forme d'une pompe à vide (245).
  19. Dispositif d'évacuation d'une chambre (104, 204) remplie d'un gaz de protection, notamment d'une chambre scellée d'une machine d'emballage (102, 202), comprenant :
    un volume tampon (14, 15), qui est partie intégrante d'une source de vide (1) et qui peut être relié à la chambre (4) afin d'évacuer celle-ci et être commandé de telle sorte que le volume tampon (14, 15) soit pré-évacué avant d'être relié à la chambre (4) et soit ensuite ponctuellement relié à la chambre (4),
    un capteur (26, 29) pour déterminer la concentration d'au moins un composant de gaz du gaz de protection dans l'atmosphère du volume tampon (14, 15) de la source de vide (1), lequel est disposé dans le volume tampon (14, 15).
  20. Dispositif selon la revendication 19,
    caractérisé en ce que
    une source de gaz de protection (9) est prévue, laquelle peut être reliée à la chambre (4) et commandée de telle sorte qu'elle soit reliée ponctuellement à la chambre (4) après l'évacuation de celle-ci.
  21. Dispositif selon une des revendications 9 à 20,
    caractérisé en ce que
    le capteur (26, 29, 126, 129, 142, 246) comprend une sonde d'oxygène (27, 30, 127, 130, 143, 247) pour déterminer la concentration d'au moins un composant de gaz du gaz de protection dans l'atmosphère.
EP05009182A 2004-05-14 2005-04-27 Procédé et dispositif d'évacuation d'une chambre Not-in-force EP1595794B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004024480 2004-05-14
DE102004024480A DE102004024480A1 (de) 2004-05-14 2004-05-14 Verfahren und Vorrichtung zum Evakuieren einer Kammer

Publications (2)

Publication Number Publication Date
EP1595794A1 EP1595794A1 (fr) 2005-11-16
EP1595794B1 true EP1595794B1 (fr) 2008-10-08

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ID=34935797

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Application Number Title Priority Date Filing Date
EP05009182A Not-in-force EP1595794B1 (fr) 2004-05-14 2005-04-27 Procédé et dispositif d'évacuation d'une chambre

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EP (1) EP1595794B1 (fr)
AT (1) ATE410364T1 (fr)
DE (2) DE102004024480A1 (fr)
DK (1) DK1595794T3 (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010055438A1 (de) * 2010-12-21 2012-06-21 Multivac Sepp Haggenmüller Gmbh & Co. Kg Verpackungsmaschine und Verfahren zum Erzeugen einer Vakuumverpackung
DE102011111188A1 (de) * 2011-08-25 2013-02-28 Khs Gmbh Vakuumeinrichtung für Anlagen zur Behandlung von Behältern, Anlage zur Behandlung von Behältern sowie Verfahren zur Steuerung einer Vakuumeirichtung
DE102011122769A1 (de) 2011-10-29 2013-05-02 Messer Austria Gmbh Schutzgas zum Verpacken von Fleisch- und Wurstwaren
MX367298B (es) * 2013-04-24 2019-08-14 Gea Food Solutions Germany Gmbh Máquina empaquetadora con herramienta para vacio.
WO2017102541A1 (fr) * 2015-12-14 2017-06-22 Gea Food Solutions Germany Gmbh Machine d'emballage et procédé de production d'emballages dans lesquels le vide est créé
DE102018100224A1 (de) * 2018-01-08 2019-07-11 Multivac Sepp Haggenmüller Se & Co. Kg Verpackungsmaschine mit Druckregelvorrichtung und Verfahren
DE102018110227A1 (de) 2018-04-27 2019-10-31 Multivac Sepp Haggenmüller Se & Co. Kg Verpackungsmaschine zum Verpacken von Produkten in Kunststoffverpackungen
CN115041070A (zh) * 2022-05-27 2022-09-13 中材锂膜有限公司 一种用于物料生产的密闭式气体平衡系统

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2829889A1 (de) * 1978-07-07 1980-01-24 Leybold Heraeus Gmbh & Co Kg Verfahren und vorrichtung zur wiederholten evakuierung abgeschlossener volumina
DE3411917A1 (de) * 1984-03-30 1985-10-03 Multivac Sepp Haggenmüller KG, 8941 Wolfertschwenden Verfahren und vorrichtung zum verpacken von gegenstaenden
DE4314052C1 (de) * 1993-04-29 1994-11-10 Rudolf Christoph Bilz Evakuiereinrichtung
DE19500692C2 (de) * 1995-01-12 1998-09-10 Felix Rudolf Bilz Anlage zur Druckabsenkung in den Arbeitskammern mehrerer an eine Vakuumzentralanlage angeschlossener Verbraucher
US5822951A (en) * 1997-11-06 1998-10-20 Modern Controls, Inc. Apparatus and method for sampling gas in product packages

Also Published As

Publication number Publication date
DK1595794T3 (da) 2009-04-14
DE102004024480A1 (de) 2005-12-08
ATE410364T1 (de) 2008-10-15
DE502005005582D1 (de) 2008-11-20
EP1595794A1 (fr) 2005-11-16

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