EP0656316A1 - Device for delivery of doses of liquids at high rate - Google Patents

Device for delivery of doses of liquids at high rate Download PDF

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Publication number
EP0656316A1
EP0656316A1 EP94402583A EP94402583A EP0656316A1 EP 0656316 A1 EP0656316 A1 EP 0656316A1 EP 94402583 A EP94402583 A EP 94402583A EP 94402583 A EP94402583 A EP 94402583A EP 0656316 A1 EP0656316 A1 EP 0656316A1
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EP
European Patent Office
Prior art keywords
solenoid valve
liquid
distribution
doses
solenoid
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.)
Granted
Application number
EP94402583A
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German (de)
French (fr)
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EP0656316B1 (en
Inventor
Jean-Pierre Germain
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Air Liquide SA
LAir Liquide SA pour lEtude et lExploitation des Procedes Georges Claude
Original Assignee
Air Liquide SA
LAir Liquide SA pour lEtude et lExploitation des Procedes Georges Claude
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Publication date
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Publication of EP0656316A1 publication Critical patent/EP0656316A1/en
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Publication of EP0656316B1 publication Critical patent/EP0656316B1/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B67—OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
    • B67C—CLEANING, FILLING WITH LIQUIDS OR SEMILIQUIDS, OR EMPTYING, OF BOTTLES, JARS, CANS, CASKS, BARRELS, OR SIMILAR CONTAINERS, NOT OTHERWISE PROVIDED FOR; FUNNELS
    • B67C3/00—Bottling liquids or semiliquids; Filling jars or cans with liquids or semiliquids using bottling or like apparatus; Filling casks or barrels with liquids or semiliquids
    • B67C3/02—Bottling liquids or semiliquids; Filling jars or cans with liquids or semiliquids using bottling or like apparatus
    • B67C3/22—Details
    • B67C3/28—Flow-control devices, e.g. using valves
    • B67C3/287—Flow-control devices, e.g. using valves related to flow control using predetermined or real-time calculated parameters
    • 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
    • B65B3/00—Packaging plastic material, semiliquids, liquids or mixed solids and liquids, in individual containers or receptacles, e.g. bags, sacks, boxes, cartons, cans, or jars
    • B65B3/26—Methods or devices for controlling the quantity of the material fed or filled
    • B65B3/34—Methods or devices for controlling the quantity of the material fed or filled by timing of filling operations
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B67—OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
    • B67C—CLEANING, FILLING WITH LIQUIDS OR SEMILIQUIDS, OR EMPTYING, OF BOTTLES, JARS, CANS, CASKS, BARRELS, OR SIMILAR CONTAINERS, NOT OTHERWISE PROVIDED FOR; FUNNELS
    • B67C3/00—Bottling liquids or semiliquids; Filling jars or cans with liquids or semiliquids using bottling or like apparatus; Filling casks or barrels with liquids or semiliquids
    • B67C3/02—Bottling liquids or semiliquids; Filling jars or cans with liquids or semiliquids using bottling or like apparatus
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B67—OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
    • B67C—CLEANING, FILLING WITH LIQUIDS OR SEMILIQUIDS, OR EMPTYING, OF BOTTLES, JARS, CANS, CASKS, BARRELS, OR SIMILAR CONTAINERS, NOT OTHERWISE PROVIDED FOR; FUNNELS
    • B67C3/00—Bottling liquids or semiliquids; Filling jars or cans with liquids or semiliquids using bottling or like apparatus; Filling casks or barrels with liquids or semiliquids
    • B67C3/02—Bottling liquids or semiliquids; Filling jars or cans with liquids or semiliquids using bottling or like apparatus
    • B67C3/20—Bottling liquids or semiliquids; Filling jars or cans with liquids or semiliquids using bottling or like apparatus with provision for metering the liquids to be introduced, e.g. when adding syrups
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B67—OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
    • B67C—CLEANING, FILLING WITH LIQUIDS OR SEMILIQUIDS, OR EMPTYING, OF BOTTLES, JARS, CANS, CASKS, BARRELS, OR SIMILAR CONTAINERS, NOT OTHERWISE PROVIDED FOR; FUNNELS
    • B67C3/00—Bottling liquids or semiliquids; Filling jars or cans with liquids or semiliquids using bottling or like apparatus; Filling casks or barrels with liquids or semiliquids
    • B67C3/02—Bottling liquids or semiliquids; Filling jars or cans with liquids or semiliquids using bottling or like apparatus
    • B67C3/22—Details
    • B67C3/222—Head-space air removing devices, e.g. by inducing foam
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B67—OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
    • B67D—DISPENSING, DELIVERING OR TRANSFERRING LIQUIDS, NOT OTHERWISE PROVIDED FOR
    • B67D1/00—Apparatus or devices for dispensing beverages on draught
    • B67D1/08—Details
    • B67D1/12—Flow or pressure control devices or systems, e.g. valves, gas pressure control, level control in storage containers
    • B67D1/1202—Flow control, e.g. for controlling total amount or mixture ratio of liquids to be dispensed
    • B67D1/1234—Flow control, e.g. for controlling total amount or mixture ratio of liquids to be dispensed to determine the total amount
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B67—OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
    • B67D—DISPENSING, DELIVERING OR TRANSFERRING LIQUIDS, NOT OTHERWISE PROVIDED FOR
    • B67D1/00—Apparatus or devices for dispensing beverages on draught
    • B67D1/08—Details
    • B67D1/12—Flow or pressure control devices or systems, e.g. valves, gas pressure control, level control in storage containers
    • B67D1/1202—Flow control, e.g. for controlling total amount or mixture ratio of liquids to be dispensed
    • B67D1/1234—Flow control, e.g. for controlling total amount or mixture ratio of liquids to be dispensed to determine the total amount
    • B67D1/1236—Flow control, e.g. for controlling total amount or mixture ratio of liquids to be dispensed to determine the total amount comprising means for detecting the size of vessels to be filled

Definitions

  • the present invention relates to a device for delivering, at a high rate, doses of a liquid.
  • liquid can be an additive to the contents of the container, however the invention has been developed with the aim of introducing into containers a small amount of liquid nitrogen, so as to cause temporary cooling, as well as inerting. , before closing the container.
  • a device comprising a solenoid valve before an inlet and an outlet, and provided with adjustment means making it possible to precisely adjust the flow rate passing through the solenoid valve when it is open, a conduit for power supply connecting a source of liquid to the inlet of the solenoid valve, and a distribution conduit connected to the outlet of the solenoid valve and opening to the outside at the place where the liquid is to be delivered, the device further comprising a control device which delivers signals controlling the opening and closing of the solenoid valve according to a preset program.
  • the control device makes it possible to obtain strictly reproducible opening times, while the adjusting means allows, by adjusting the flow rate, to introduce into each container an amount of liquid practically identical to that which is desired.
  • the object of the present invention is to solve this problem, and to provide a device which allows, almost instantaneously, a change in the quantity of liquid dispensed each time.
  • the invention provides a device of the type indicated above, and that has the particularity that it comprises a pair of first and second solenoid valves mounted in parallel between the supply duct and the distribution conduit, and a switching device interposed between the control device and the two solenoid valves to actuate at will one or the other of the solenoid valves.
  • the operating mode is easily understood: while a series of identical doses is being delivered, using, for example, the first solenoid valve, the operator can, without being pressed for time, adjust the adjustment means of the second solenoid valve, and when changing the setpoint, it suffices for it to actuate the switching device so that doses corresponding to the second setpoint value are delivered. The operator can then actuate the means for adjusting the first solenoid valve to prepare the delivery of doses corresponding to a third set value, and so on.
  • the operations can be programmed and automated, that is to say that the actuation of the adjustment means can be controlled automatically using a preset program, and the actuation of the switching device can be triggered by a sensitive sensor, for example, to an index or to a change in shape or color of the scrolling containers.
  • a cryogenic tank 1 comprising, conventionally, an outer casing 2 and, thermally insulated therefrom, an inner casing 3 defining an internal chamber for storing a quantity of liquefied gas 4 surmounted by a gaseous sky.
  • the device according to the invention comprises a liquid supply pipe 5, opening into the internal envelope 3 and a short downstream or distribution pipe 6 separated by a block of cryogenic solenoid valves 7.
  • a pipe of gas 8 connected to a source of pressurized gas, advantageously the gaseous phase of the cryogenic fluid contained in the reservoir 1, available from a line 10 communicating with the gaseous sky of the internal envelope 4 or, optionally, with a indoor liquefied gas vaporizer coil 4.
  • FIG. 3 shows the theoretical diagram of block 7. It can be seen that it contains three solenoid valves: two solenoid valves 7A, 7B are placed in parallel between the liquid supply line 5 and the distribution line 6, while the third solenoid valve 7C is placed between the gas pipe 8 and the same distribution pipe 6.
  • 9A and 9B is intended micrometric screws for adjusting the solenoid valves 7A and 7B, which can be controlled from the outside.
  • the micrometric screw for adjusting the gas solenoid valve 7C which in principle does not have to be adjusted frequently, is not accessible from the outside in the example shown, but it is possible that it so too.
  • the solenoid valves are connected to an electronic control unit 11, by means of a switch 12 placed between the control unit 11 and the two liquid solenoid valves 7A, 7B, the gas solenoid valve 7C being connected directly to the electronic control unit.
  • the assembly of the reservoir 1 and of the distribution system is disposed above a path of containers 13 driven by a conveyor 14.
  • a sensor 15 is disposed near the path of the containers 13, is it is sensitive to the indications given by indexes 16 carried by the containers.
  • one of the liquid solenoid valves, 7A for example is open for a determined period, typically of the order of a few hundredths of a second, to let a measured dose of the liquid contained in the upstream part of the pipe 5 and pour this determined dose into a container 13 passing under the downstream part of the distribution pipe 6.
  • the solenoid valve 7A is then closed and, after a very short time interval , of the order of 10 thousandths of a second, the solenoid valve 9C is open, for a determined period, typically of the order of 2 hundredths of a second, to scan the downstream part of the distribution pipe 6 and thus expel the drops liquid in this downstream part.
  • the duration of the opening of the solenoid valve 9C is chosen to stabilize the temperature in the downstream part of the pipe 6 and therefore the quantity of liquid nitrogen which is vaporized there during the next injection.
  • the opening of the solenoid valves is adjustable according to the dimensions of the containers 13 and their implementation is synchronized by the control unit 11, from signals for detecting the presence of the containers 13 and / or the forward speed of these latter. In mass production, the total duration of a cycle can be reduced to 0.05 seconds.
  • the sensor 15 sends a signal which is transmitted, via the control member 11, to activate the solenoid valve 7B in place of the solenoid valve 7A , Or vice versa.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
  • Vacuum Packaging (AREA)
  • Separation By Low-Temperature Treatments (AREA)
  • Lift Valve (AREA)
  • Control Of Non-Positive-Displacement Pumps (AREA)
  • Magnetically Actuated Valves (AREA)
  • Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)

Abstract

The device comprises two electrovalves (solenoid valves) (7A, 7B) grouped together in one and the same block (7) and arranged in parallel between a supply conduit (5) and a distribution (dispensing) conduit (6). Each electrovalve is provided with a micrometer screw (9A, 9B), for adjustment, which may be actuated from outside the block. While one of the electrovalves is in action for delivering identical successive quantities of liquid, the other electrovalve is adjusted as a function of a new reference value and, when the reference changes, it suffices to switch the electrovalves. The same block (7) may contain a third electrovalve (7C) for blowing pressurised gas to expel the drops remaining in the distribution pipe. <IMAGE>

Description

La présente invention est relative à un dispositif pour délivrer, à cadence élevée, des doses d'un liquide.The present invention relates to a device for delivering, at a high rate, doses of a liquid.

Dans divers domaines de la technique, il est nécessaire de délivrer de faibles doses de liquide à cadence élevée. C'est le cas, par exemple, lorsqu'on désire introduire une petite quantité de liquide dans des récipients, tels que des boîtes de conserve ou des conteneurs de boissons défilant à grande vitesse sous un poste de distribution. Le liquide peut être un additif au contenu du récipient, cependant l'invention a été mise au point dans le but d'introduire dans des récipients une petite quantité d'azote liquide, de façon à provoquer un refroidissement momentanée, ainsi qu'un inertage, avant la fermeture du récipient.In various fields of technology, it is necessary to deliver small doses of liquid at a high rate. This is the case, for example, when it is desired to introduce a small quantity of liquid into containers, such as cans or containers of drinks scrolling at high speed under a dispensing station. The liquid can be an additive to the contents of the container, however the invention has been developed with the aim of introducing into containers a small amount of liquid nitrogen, so as to cause temporary cooling, as well as inerting. , before closing the container.

On peut utiliser, pour le but indiqué plus haut, un dispositif comprenant une électrovanne avant une entrée et une sortie, et pourvue de moyen de réglage permettant d'ajuster avec précision le débit traversant l'électrovanne quand elle est ouverte, un conduit d'alimentation reliant une source de liquide à l'entrée de l'électrovanne, et un conduit de distribution relié à la sortie de l'électrovanne et débouchant à l'extérieur à l'endroit où le liquide doit être délivré, le dispositif comprenant en outre un dispositif de commande qui délivre des signaux commandant l'ouverture et la fermeture de l'électrovanne suivant un programme préétabli.It is possible to use, for the purpose indicated above, a device comprising a solenoid valve before an inlet and an outlet, and provided with adjustment means making it possible to precisely adjust the flow rate passing through the solenoid valve when it is open, a conduit for power supply connecting a source of liquid to the inlet of the solenoid valve, and a distribution conduit connected to the outlet of the solenoid valve and opening to the outside at the place where the liquid is to be delivered, the device further comprising a control device which delivers signals controlling the opening and closing of the solenoid valve according to a preset program.

Le dispositif de commande permet d'obtenir des temps d'ouverture rigoureusement reproductibles, cependant que le moyen de réglage permet, en ajustant le débit, d'introduire dans chaque récipient une quantité de liquide pratiquement identique à celle qui est désirée.The control device makes it possible to obtain strictly reproducible opening times, while the adjusting means allows, by adjusting the flow rate, to introduce into each container an amount of liquid practically identical to that which is desired.

Il est ainsi possible d'obtenir un dosage rigoureux et constant, tout en maintenant des cadences extrêmement élevées, sans que l'introduction des faibles quantités de liquide à travers le dispositif qu'on vient de mentionner ralentisse les vitesses de passage.It is thus possible to obtain a rigorous and constant dosage, while maintaining extremely high rates, without the introduction of small quantities of liquid through the device which has just been mentioned slowing down the passage speeds.

Cependant, un problème se pose lorsque l'on passe d'une série de récipients dans lesquels on doit introduire une quantité déterminée de liquide, à une autre série de récipients dans lesquels on doit introduire une quantité liquide différente. En effet, un changement du temps d'ouverture de l'électrovanne, par le moyen du dispositif de commande, ne permet généralement pas d'obtenir une précision suffisante sur le temps d'ouverture et fermeture, et il est nécessaire d'arrêter la chaîne pour procéder à un ajustement du moyen de réglage de l'électrovanne. Cela entraîne, par conséquent, une perte de temps qui se répercute sur la totalité de l'installation.However, a problem arises when one passes from a series of containers into which one must introduce a determined quantity of liquid, to another series of containers into which one must introduce a quantity different liquid. Indeed, a change in the opening time of the solenoid valve, by means of the control device, generally does not make it possible to obtain sufficient precision on the opening and closing time, and it is necessary to stop the chain to adjust the solenoid valve adjustment means. This therefore results in a loss of time which affects the entire installation.

La présente invention a pour but de résoudre ce problème, et de fournir un dispositif qui permette, de façon pratiquement instantanée, un changement de la quantité de liquide distribuée à chaque fois.The object of the present invention is to solve this problem, and to provide a device which allows, almost instantaneously, a change in the quantity of liquid dispensed each time.

Pour obtenir ce résultat, l'invention fournit un dispositif du type indiqué ci-dessus, et que présente la particularité qu'il comprend une paire d'une première et d'une seconde électrovanne montées en parallèle entre le conduit d'alimentation et le conduit de distribution, et un dispositif de commutation intercalé entre le dispositif de commande et les deux électrovannes pour mettre en action à volonté l'une ou l'autre des électrovannes.To obtain this result, the invention provides a device of the type indicated above, and that has the particularity that it comprises a pair of first and second solenoid valves mounted in parallel between the supply duct and the distribution conduit, and a switching device interposed between the control device and the two solenoid valves to actuate at will one or the other of the solenoid valves.

Le mode opératoire se comprend aisément : pendant qu'une série de doses identiques est en train d'être délivre, en utilisant, par exemple, la première électrovanne, l'opérateur peut, sans être pressé par le temps, régler le moyen de réglage de la deuxième électrovanne, et lors du changement de consigne, il suffit qu'il actionne le dispositif de commutation pour que des doses correspondant à la seconde valeur de consignes soient délivrées. L'opérateur peut alors actionner le moyen de réglage de la première électrovanne pour préparer la délivrance de doses correspondant à une troisième valeur de consigne, et ainsi de suite.The operating mode is easily understood: while a series of identical doses is being delivered, using, for example, the first solenoid valve, the operator can, without being pressed for time, adjust the adjustment means of the second solenoid valve, and when changing the setpoint, it suffices for it to actuate the switching device so that doses corresponding to the second setpoint value are delivered. The operator can then actuate the means for adjusting the first solenoid valve to prepare the delivery of doses corresponding to a third set value, and so on.

Bien entendu, les opérations peuvent être programmées et automatisées, c'est-à-dire que l'actionnement des moyens de réglage peut être commandé de façon automatique à l'aide d'un programme préétabli, et l'actionnement du dispositif de commutation peut être déclenché par un capteur sensible, par exemple, à un index ou à un changement de forme ou de couleur des récipients en défilement.Of course, the operations can be programmed and automated, that is to say that the actuation of the adjustment means can be controlled automatically using a preset program, and the actuation of the switching device can be triggered by a sensitive sensor, for example, to an index or to a change in shape or color of the scrolling containers.

L'invention va maintenant être décrite de façon plus détaillée à l'aide d'un exemple pratique, illustré avec les dessins, parmi lesquels :

  • Figure 1 est une vue d'ensemble d'une installation comportant un dispositif selon l'invention pour distribuer de l'azote liquide dans des récipients en défilement,
  • Figure 2 est une vue de face agrandie du bloc 7 et
  • Figure 3 est un schéma théorique du bloc 7.
The invention will now be described in more detail using a practical example, illustrated with the drawings, among which:
  • FIG. 1 is an overall view of an installation comprising a device according to the invention for dispensing liquid nitrogen in scrolling containers,
  • Figure 2 is an enlarged front view of block 7 and
  • Figure 3 is a theoretical diagram of block 7.

Sur la Figure 1, on reconnaît un réservoir cryogénique 1 comprenant, de façon classique, une enveloppe extérieure 2 et, isolés thermiquement de cette dernière, une enveloppe intérieure 3 définissant une chambre interne de stockage d'une quantité de gaz liquéfié 4 surmontée d'un ciel gazeux. Le dispositif selon l'invention comprend une conduite d'alimentation en liquide 5, débouchant dans l'enveloppe interne 3 et une courte conduite aval ou de distribution 6 séparées par un bloc à électrovannes cryogéniques 7. Dans le bloc 7, débouche également une conduite de gaz 8 reliée à une source de gaz sous pression, avantageusement la phase gazeuse du fluide cryogénique contenu dans le réservoir 1, disponible à partir d'une conduite 10 communiquant avec le ciel gazeux de l'enveloppe interne 4 ou, éventuellement, avec un serpentin intérieur de vaporisation du gaz liquéfié 4.In Figure 1, we recognize a cryogenic tank 1 comprising, conventionally, an outer casing 2 and, thermally insulated therefrom, an inner casing 3 defining an internal chamber for storing a quantity of liquefied gas 4 surmounted by a gaseous sky. The device according to the invention comprises a liquid supply pipe 5, opening into the internal envelope 3 and a short downstream or distribution pipe 6 separated by a block of cryogenic solenoid valves 7. In block 7, also leads a pipe of gas 8 connected to a source of pressurized gas, advantageously the gaseous phase of the cryogenic fluid contained in the reservoir 1, available from a line 10 communicating with the gaseous sky of the internal envelope 4 or, optionally, with a indoor liquefied gas vaporizer coil 4.

La figure 3 montre le schéma théorique du bloc 7. On constate qu'il contient trois électrovannes : deux électrovannes 7A, 7B sont placées en parallèle entre la conduite d'alimentation en liquide 5 et la conduite de distribution 6, alors que la troisième électrovanne 7C est placée entre la conduite de gaz 8 et la même conduite de distribution 6. On a destiné par 9A et 9B des vis micrométriques de réglage des électrovannes 7A et 7B, qui peuvent être commandées de l'extérieur. La vis micrométrique de réglage de l'électrovanne à gaz 7C, qui en principe n'a pas à être réglée de façon fréquente, n'est pas accessible de l'extérieur dans l'exemple représenté, mais il est possible qu'elle le soit aussi.FIG. 3 shows the theoretical diagram of block 7. It can be seen that it contains three solenoid valves: two solenoid valves 7A, 7B are placed in parallel between the liquid supply line 5 and the distribution line 6, while the third solenoid valve 7C is placed between the gas pipe 8 and the same distribution pipe 6. By 9A and 9B is intended micrometric screws for adjusting the solenoid valves 7A and 7B, which can be controlled from the outside. The micrometric screw for adjusting the gas solenoid valve 7C, which in principle does not have to be adjusted frequently, is not accessible from the outside in the example shown, but it is possible that it so too.

Les électrovannes sont reliées à une unité électronique de commande 11, par l'intermédiaire d'un commutateur 12 placé entre l'unité de commande 11 et les deux électrovannes à liquide 7A, 7B, l'électrovanne à gaz 7C étant reliée directement à l'unité électronique de commande.The solenoid valves are connected to an electronic control unit 11, by means of a switch 12 placed between the control unit 11 and the two liquid solenoid valves 7A, 7B, the gas solenoid valve 7C being connected directly to the electronic control unit.

Comme le montre la Figure 1, l'ensemble du réservoir 1 et du système de distribution est disposé au-dessus d'un trajet de récipients 13 entraînés par un convoyeur 14. Un capteur 15 est disposé à proximité du trajet des récipients 13, est il est sensible aux indications données par des index 16 portés par les récipients.As shown in FIG. 1, the assembly of the reservoir 1 and of the distribution system is disposed above a path of containers 13 driven by a conveyor 14. A sensor 15 is disposed near the path of the containers 13, is it is sensitive to the indications given by indexes 16 carried by the containers.

Le cycle de fonctionnement du dispositif qui vient d'être décrit est le suivant : une des électrovannes à liquide, 7A par exemple, est ouverte pendant une durée déterminée, typiquement de l'ordre de quelques centièmes de seconde, pour laisser s'écouler une dose mesurée du liquide contenu dans la partie amont de la conduite 5 et déverser cette dose déterminée dans un récipient 13 passant sous la partie aval de la conduite de distribution 6. L'électrovanne 7A est alors fermée et, après un très petit intervalle de temps, de l'ordre de 10 millièmes de seconde, l'électrovanne 9C est ouverte, pendant une durée déterminée, typiquement de l'ordre de 2 centièmes de seconde, pour balayer la partie aval de la conduite de distribution 6 et expulser ainsi les gouttes de liquide se trouvant dans cette partie aval. La durée d'ouverture de l'électrovanne 9C est choisie pour stabiliser la température dans la partie aval de la conduite 6 et donc la quantité d'azote liquide qui y est vaporisée lors de l'injection suivante. L'ouverture des électrovannes est réglable en fonction des dimensions des récipients 13 et leur mise en oeuvre est synchronisée par l'unité de commande 11, à partir de signaux de détection de présence des récipients 13 et/ou de la vitesse d'avancement de ces derniers. En production de masse, la durée totale d'un cycle peut être réduite à 0,05 seconde.The operating cycle of the device which has just been described is as follows: one of the liquid solenoid valves, 7A for example, is open for a determined period, typically of the order of a few hundredths of a second, to let a measured dose of the liquid contained in the upstream part of the pipe 5 and pour this determined dose into a container 13 passing under the downstream part of the distribution pipe 6. The solenoid valve 7A is then closed and, after a very short time interval , of the order of 10 thousandths of a second, the solenoid valve 9C is open, for a determined period, typically of the order of 2 hundredths of a second, to scan the downstream part of the distribution pipe 6 and thus expel the drops liquid in this downstream part. The duration of the opening of the solenoid valve 9C is chosen to stabilize the temperature in the downstream part of the pipe 6 and therefore the quantity of liquid nitrogen which is vaporized there during the next injection. The opening of the solenoid valves is adjustable according to the dimensions of the containers 13 and their implementation is synchronized by the control unit 11, from signals for detecting the presence of the containers 13 and / or the forward speed of these latter. In mass production, the total duration of a cycle can be reduced to 0.05 seconds.

Lorsque l'indication donnée par l'index 16 change, le capteur 15 envoie un signal qui est transmis, par l'intermédiaire de l'organe de commande 11, pour mettre en action l'électrovanne 7B à la place de l'électrovanne 7A, ou inversement.When the indication given by the index 16 changes, the sensor 15 sends a signal which is transmitted, via the control member 11, to activate the solenoid valve 7B in place of the solenoid valve 7A , Or vice versa.

Claims (5)

Dispositif pour délivrer, à cadence élevée, des doses d'un liquide, comprenant une électrovanne (7A, 7B) ayant une entrée et une sortie, et pourvue d'un moyen de réglage (9A, 9B) permettant d'ajuster avec précision le débit traversant l'électrovanne quand elle est ouverte, un conduit d'alimentation (5) reliant l'entrée de l'électrovanne à une source de liquide, un conduit de distribution (6) relié à la sortie de l'électrovanne et débouchant à l'extérieur à l'endroit où le liquide doit être délivré, et un dispositif de commande (11) commandant l'ouverture et la fermeture de l'électrovanne, caractérisé en ce qu'il comprend une première et une seconde électrovannes (7A, 7B) montées en parallèle entre le conduit d'alimentation (5) et le conduit de distribution (6), et un dispositif de commutation (12) intercalé entre le dispositif de commande et les première et seconde électrovannes pour mettre en action sélectivement l'une ou l'autre des électrovannes.Device for delivering, at a high rate, doses of a liquid, comprising a solenoid valve (7A, 7B) having an inlet and an outlet, and provided with an adjustment means (9A, 9B) allowing to precisely adjust the flow through the solenoid valve when it is open, a supply duct (5) connecting the inlet of the solenoid valve to a source of liquid, a distribution duct (6) connected to the outlet of the solenoid valve and opening at the exterior at the place where the liquid is to be delivered, and a control device (11) controlling the opening and closing of the solenoid valve, characterized in that it comprises first and second solenoid valves (7A, 7B) mounted in parallel between the supply duct (5) and the distribution duct (6), and a switching device (12) interposed between the control device and the first and second solenoid valves for selectively actuating the either of the solenoid valves. Dispositif selon la revendication 1, caractérisé en ce que les moyens de réglage (9A, 9B) de chaque électrovanne (7A, 7B) sont commandés à distance en fonction d'un programme préétabli.Device according to claim 1, characterized in that the adjusting means (9A, 9B) of each solenoid valve (7A, 7B) are remotely controlled according to a preset program. Dispositif selon l'une des revendications 1 et 2, caractérisé en ce qu'il comprend une troisième électrovanne (7C), disposée entre un conduit d'alimentation en gaz (8) reliée à une source de gaz sous pression et le conduit de distribution (6), cette troisième électrovanne étant commandée par le dispositif de commande (11) commandant l'ouverture et la fermeture de ladite troisième électrovanne suivant un programme tel que du gaz sous pression est envoyé dans le conduit de distribution (6) après la fermeture de la première ou de la seconde électrovanne, afin de chasser les gouttes de liquide restant dans le conduit de distribution.Device according to one of claims 1 and 2, characterized in that it comprises a third solenoid valve (7C), disposed between a gas supply pipe (8) connected to a source of pressurized gas and the distribution pipe (6), this third solenoid valve being controlled by the control device (11) controlling the opening and closing of said third solenoid valve according to a program such that pressurized gas is sent into the distribution conduit (6) after closing of the first or second solenoid valve, in order to expel the drops of liquid remaining in the dispensing conduit. Application du dispositif selon l'une des revendications précédentes à la fourniture de doses d'un liquide cryogénique à des récipients de produits alimentaires.Application of the device according to one of the preceding claims to the supply of doses of a cryogenic liquid to containers of food products. Application selon la revendication 4 d'un dispositif selon la revendication 3, caractérisé en ce que le liquide et le gaz sont les deux phases d'un même produit.Application according to claim 4 of a device according to claim 3, characterized in that the liquid and the gas are the two phases of the same product.
EP94402583A 1993-12-01 1994-11-16 Device for delivery of doses of liquids at high rate Expired - Lifetime EP0656316B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9314341 1993-12-01
FR9314341A FR2713216B1 (en) 1993-12-01 1993-12-01 Device for delivering, at a high rate, doses of a liquid.

Publications (2)

Publication Number Publication Date
EP0656316A1 true EP0656316A1 (en) 1995-06-07
EP0656316B1 EP0656316B1 (en) 1999-01-13

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EP94402583A Expired - Lifetime EP0656316B1 (en) 1993-12-01 1994-11-16 Device for delivery of doses of liquids at high rate

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US (1) US5566733A (en)
EP (1) EP0656316B1 (en)
JP (1) JPH0826217A (en)
CA (1) CA2136783A1 (en)
DE (1) DE69415947T2 (en)
ES (1) ES2126086T3 (en)
FR (1) FR2713216B1 (en)

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FR2765655A1 (en) * 1997-07-07 1999-01-08 Air Liquide SOLENOID VALVE AND ITS APPLICATION TO A CRYOGENIC LIQUID SUPPLY APPARATUS AND A PACKAGING INSTALLATION
FR2787862A1 (en) * 1998-12-29 2000-06-30 Carboxyque Francaise METHOD AND DEVICE FOR REGULATED INJECTION OF LIQUID CARBON DIOXIDE INTO A PRESSURIZED LIQUID
FR2946969A1 (en) * 2009-06-18 2010-12-24 Lbm Ind Bottle e.g. champagne bottle, treating device for closing bottles, has nozzle ejecting fluid jet under specific pressure range when nozzle is activated at predefined instants, where nozzle is deactivated

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US6742549B1 (en) * 2003-01-21 2004-06-01 Fqubed Method and apparatus for quasi-continuous and quasi-simultaneous dispensing
ITTO20030747A1 (en) * 2003-09-25 2005-03-26 Elbi Int Spa ELECTROVALVE DEVICE FOR DELIVERY FOR A REFRIGERATOR.
US7263840B2 (en) * 2003-10-22 2007-09-04 Triumf Automatic LN2 distribution system for high-purity germanium multi-detector facilities
JP4785701B2 (en) * 2006-10-18 2011-10-05 日本テトラパック株式会社 Manufacturing method of composite container
WO2015000697A1 (en) * 2013-07-03 2015-01-08 Nomacorc Llc Apparatus, method and system for reducing the oxygen content in a product container
CN111810838B (en) * 2020-06-28 2021-09-17 皖南医学院第一附属医院（皖南医学院弋矶山医院） Adjustable liquid nitrogen extraction and transfer device and working method thereof
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US11912556B2 (en) * 2021-01-07 2024-02-27 Kevin D. McGushion Methods, systems and devices for protecting a surface of a container from exposure to additives

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FR2765655A1 (en) * 1997-07-07 1999-01-08 Air Liquide SOLENOID VALVE AND ITS APPLICATION TO A CRYOGENIC LIQUID SUPPLY APPARATUS AND A PACKAGING INSTALLATION
EP0893395A1 (en) * 1997-07-07 1999-01-27 L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Electrovalve and its use in an apparatus for dispensing cryogenic liquid and in a filling unit
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FR2787862A1 (en) * 1998-12-29 2000-06-30 Carboxyque Francaise METHOD AND DEVICE FOR REGULATED INJECTION OF LIQUID CARBON DIOXIDE INTO A PRESSURIZED LIQUID
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FR2946969A1 (en) * 2009-06-18 2010-12-24 Lbm Ind Bottle e.g. champagne bottle, treating device for closing bottles, has nozzle ejecting fluid jet under specific pressure range when nozzle is activated at predefined instants, where nozzle is deactivated

Also Published As

Publication number Publication date
JPH0826217A (en) 1996-01-30
CA2136783A1 (en) 1995-06-02
ES2126086T3 (en) 1999-03-16
US5566733A (en) 1996-10-22
EP0656316B1 (en) 1999-01-13
DE69415947T2 (en) 1999-08-12
FR2713216A1 (en) 1995-06-09
DE69415947D1 (en) 1999-02-25
FR2713216B1 (en) 1996-01-12

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