EP0631096A1 - Low temperature conservation process for products in an insulated enclosure, apparatus for carrying out the process, insulated enclosure and container for such an enclosure - Google Patents

Low temperature conservation process for products in an insulated enclosure, apparatus for carrying out the process, insulated enclosure and container for such an enclosure Download PDF

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Publication number
EP0631096A1
EP0631096A1 EP94401392A EP94401392A EP0631096A1 EP 0631096 A1 EP0631096 A1 EP 0631096A1 EP 94401392 A EP94401392 A EP 94401392A EP 94401392 A EP94401392 A EP 94401392A EP 0631096 A1 EP0631096 A1 EP 0631096A1
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EP
European Patent Office
Prior art keywords
tank
enclosure
liquid
container
products
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Granted
Application number
EP94401392A
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German (de)
French (fr)
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EP0631096B1 (en
EP0631096B2 (en
Inventor
Claude Gibot
Philippe Bouguet
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Carboxyque Francaise SA
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Carboxyque Francaise SA
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D29/00—Arrangement or mounting of control or safety devices
    • F25D29/001—Arrangement or mounting of control or safety devices for cryogenic fluid systems
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D3/00—Devices using other cold materials; Devices using cold-storage bodies
    • F25D3/12—Devices using other cold materials; Devices using cold-storage bodies using solidified gases, e.g. carbon-dioxide snow
    • F25D3/125—Movable containers

Definitions

  • the present invention relates to a low temperature preservation process for products in a thermally insulated enclosure comprising a loading volume and at least one container of carbon dioxide snow.
  • an isolated enclosure is generally used without carbon dioxide snow reserve and previously brought to the refrigerated storage temperature of the products before their storage in the enclosure and the shipment of the loaded enclosure, which requires that the transport time be reduced to a minimum.
  • the object of the present invention is to provide a method allowing rapid, reliable and easily adjustable loading of the tank, even by unqualified personnel, requiring minimum handling, greatly reducing CO2 losses and suitable for long-term storage of fresh food products such as for the preservation of frozen food products.
  • the method comprises the step of injecting into the tank of the enclosure a metered quantity of liquid CO2 under pressure so as to create therein by relaxation a determined mass of carbon dioxide snow, and the dosage of the liquid CO2 injected is determined as a function of predetermined injection durations modulated as a function of climatic parameters.
  • the present invention also aims to provide an installation for implementing the method, comprising a source of pressurized liquid CO2 and a liquid CO2 supply pipe connected to a means for distributing a flow of liquid CO2 in the tank.
  • the dispensing means comprising a dispensing valve connected to a control unit comprising timing means, the dispensing means being suspended from a frame carrying the control unit and advantageously secured to a box provided with CO2 suction means gaseous vaporized during the injection of the liquid CO2 flow into the tank;
  • the tank is fixedly mounted in the enclosure and has a lateral CO2 loading opening, typically intended to be paired with the dispensing means.
  • the present invention also relates to a storage tank and reserve of dry ice suitable for such an installation and an insulated transportable enclosure provided with such a tank.
  • FIG 1 there is a transportable insulated container 1 for the transport of fresh products, as described in document EP-A-337,860 mentioned above, comprising a side access door omitted from the drawing to show the container.
  • dry ice 2 suspended in the upper part of the interior chamber of the container forming a volume 3 of product loading.
  • the heat shield 4 typically removable, extending at a distance from the inner face of the container 2 and separating the latter from the volume 3 for loading and storing fresh food products.
  • the tank 2 is mounted fixed in the container 1 and comprises, in the example shown, a front face provided with an access opening 5 for loading CO2 from the tank, as is will see further.
  • the installation comprises, in a loading station, a tank 6 of liquid CO2 at a pressure typically between 18 and 20 ⁇ 105 Pa and at a temperature of -20 ° C maintained by a refrigeration unit 7. From the tank 6 there is a pipe for supplying liquid CO2 8 provided with adequate winnowing, extended by a flexible hose 9 terminated by a distributor means 10 for introducing a flow of liquid CO2 under pressure into the tank 2 via the opening 5.
  • the distributor means 10 in this case in the form of a pistol in the example shown, is advantageously suspended, by an elastic suspension means 11, from an upper frame 12 secured to an articulated awning structure 13 provided with deployable lateral flaps 14 and intended to be positioned in view of the loading face of the container 1 to form a receptacle for confining the cold gases generated during the loading of the tank 2, which are evacuated to the outside of the work premises by a exhaust device 15 comprising a blower.
  • the suspension means 11 can be moved along the upper part of the frame 12 by a carriage 16 to allow the correct positioning of the gun 10 opposite the opening 5 of the loading of the tank 2.
  • the gun 10 typically comprises a manual closing / opening valve 17 and, upstream of this, a solenoid valve 18 connected to a control unit 19 mounted on the canopy 13.
  • the housing control 19 includes adjustable or pre-established timing means making it possible to select, as a function of different parameters, the opening times of the solenoid valve 18, therefore the quantities of liquid CO2 injected into the tank 2 and, consequently, the quantities dry ice formed by sublimation in the tank.
  • This injection is typically carried out so that the liquid CO2 jet undergoes at least one impact in the tank 2 so as to burst the jet and cause rapid production and accumulation of carbon dioxide snow in the tank.
  • FIG. 2 There is shown in Figure 2 a curve showing the carbon dioxide snow formation regime in the tank 2 as a function of the liquid CO2 injection time in seconds.
  • the container 1 and its container 2 being initially at room temperature, the quantity of carbon dioxide snow formed within 10 seconds of injection cannot be reproducibly determined.
  • Points A to D of the curve represent jumps in the transformation rate of liquid / solid CO2 as and when injected into the tank. At point A, the conversion rate is around 21%. It gradually increases to a value of around 35% up to point B, from which it remains substantially constant up to point C to increase again to a value slightly greater than 40% at point D to remain appreciably constant beyond this point D. It can therefore be seen that a quantity of 5 kg of carbon dioxide snow is generated in less than 20 seconds and that an injection time of 25 seconds is sufficient to generate a dry ice mass of 10 kg.
  • the flexibility of the method according to the invention makes it possible to easily modulate, as a function of predetermined parameters, taking into account in particular the climatic conditions and the planned transport times, the quantity of carbon dioxide snow generated in the container, as well as adapt the quantities of dry ice to the storage and transport of fresh food products, including the temperature should be between 0 and 4 ° C, like frozen products, the temperature of which should not exceed -15 ° C.
  • the different injection times can be pre-established in the housing 19 and selectable by fresh / frozen, winter / summer or week / weekend switches.
  • These injection durations can also be pre-programmed in memories of the housing 19 accessible by dialing codes on a keyboard or by introducing a smart card incorporating such programmable memories (SRAM or EEPROM).
  • the heat shield 4 is removably mounted suspended in the upper part of the container 1 for use in the storage and transport of fresh products, this heat shield being dismantled in the configuration for storage and transport of frozen products less sensitive to the proximity of the very cold surface formed by the underside of tray 2.
  • the tank 2 according to the invention is in the form of a closed parallelepipedal box made of metal sheets, typically of stainless steel and comprising in particular an upper wall 20 and a front face 21 crossing, in the vicinity of a side wall 22, by an end piece 50.
  • This end piece 50 constitutes the extension projecting towards the outside of an injection ramp 25 extending in the housing along the side wall 22 and typically formed, on its side opposite to the wall 22, with a series of equally distributed ejection orifices 24.
  • the ramp 23 supports an L-shaped deflector profile 25 extending parallel to the ramp opposite the orifices 24
  • the upper wall 20 of the tank 3 has a central cutout covered with a screen 26 so as to provide, on either side of the screen 26, a first solid area 20A overhanging the injection rail 23 / deflector 25 assembly. and a second symmetrical full zone 20B.
  • the orifices 24 are oriented so as to each eject a jet of liquid CO2 towards the bottom wall of the tank 2, this jet being returned, by the deflector 25 disposed under the orifices 24, towards the full veil part 20A of the upper wall 20 and from there towards the bottom of the housing under the second full veil part 20B, opposite the injection ramp 23, where it gradually accumulates, by sublimation, a mass of dry ice 27, the CO2 vaporized during the formation of this mass 27 escaping, as shown by the arrows dashed in FIG. 5, by the mesh 26 and spreading in the interior space 3 of the container 1 for cool the latter, before being evacuated by the hood 13.
  • the tank 2 further comprises fixing lugs 28 for its permanent mounting in the upper part of the interior volume 3, typically on vertical balusters also serving for the removable mounting of the writing thermal year 4 extending below the tank 2, at a distance from the latter, when the container 1 is used for the transport of fresh food products at a temperature between 0 and 4 ° C.
  • the dispensing means 10 suspended from the gantry 12, is internally shaped to adapt by simple plugging in to the end piece 50, this plugging being locked by a lock.
  • elastic 29 which can be manually actuated to unlock the gun and extract it from the nozzle 50.
  • the valve crank 17 is also mechanically coupled to the latch 29 so as to allow the valve to be opened only when the connector 10 is correctly inserted the end piece 50 and to allow insertion only when the valve is in the closed position.
  • the tank 2 has no front face, thus providing a wide access opening 5 for matching with a dispensing means 10, also suspended from the gantry 12 and comprising, here, a parallelepipedal injection housing 30 comprising an open front face and two injection half-ramps 23A, 23B extending transversely in the housing 30, provided with ejection orifices 24 and connected, via the solenoid valve 18, to the flexible intake 9.
  • a dispensing means 10 also suspended from the gantry 12 and comprising, here, a parallelepipedal injection housing 30 comprising an open front face and two injection half-ramps 23A, 23B extending transversely in the housing 30, provided with ejection orifices 24 and connected, via the solenoid valve 18, to the flexible intake 9.
  • the ramps 23A, 23B are arranged in the bottom of the housing 30, at a distance from the open front face of the housing, the edges of which are provided with angles 31 forming a housing for receiving the edges of the face front of the tank 2 in a coupling position of these two elements locked by a coupling device 32 constituted, in the example shown, by a lock movable in rotation and in translation carried by a side face of the housing 30 and cooperating with a shaped cutout formed in a cylinder attached to the adjacent side face of the tank 2.
  • the lock comprises an actuating handle which, in the locked position of the lock, actuates a contactor 33 mounted on the inside of the housing 30 and providing a signal validation at the electronic control unit 19.
  • the box 30 advantageously comprises, on its rear face, a handling handle 34.
  • the injectors 24 are angularly oriented towards the upper wall of the housing 30 so as to eject jets of liquid CO2 under pressure which impact this upper wall to return, by bursting them, the jets of CO2 liquid towards the bottom of tank 2 where the liquid CO2, relaxed in its path with ricochet, produces the carbon dioxide snow finely divided 27 accumulating progressively in the bottom of tank 2, as in the embodiment of Figures 4 and 5.
  • the injectors 24 can be oriented downwards to impact a deflector returning the jets to the upper wall of the housing.
  • an end-of-cycle indicator lamp lights up on the block 19 and the operator can then unhook the box 30 from the tank 2.

Abstract

The insulated enclosure (1) for conservation and transport comprises a carbon dioxide snow container (2) provided with a lateral opening (5) allowing pressurised liquid CO2 to be injected into the container by means of a distributor (10) connected to a liquid CO2 source (6), the distributor means being fitted with a solenoid valve (18) controlled by a control unit (19) comprising timer means allowing the duration of injection of liquid CO2 into the container (2) to be selected in order to form therein a metered reserve of carbon dioxide snow. Application to the conservation and transport of fresh food products as frozen food products. <IMAGE>

Description

La présente invention concerne un procédé de conservation à basse température de produits dans une enceinte thermiquement isolée comportant un volume de chargement et au moins un bac de neige carbonique.The present invention relates to a low temperature preservation process for products in a thermally insulated enclosure comprising a loading volume and at least one container of carbon dioxide snow.

Une enceinte isolée de ce type est décrite dans le document EP-A-337.860, au nom de la Demanderesse. Actuellement, le bac est extractible et comporte une face supérieure ouverte pour recevoir le chargement de neige carbonique en provenance d'un conteneur de neige carbonique en vrac ou sous forme de pellets. Ce type de chargement manuel est délicat, peu rationnel, engendre des pertes importantes en CO₂ et ne permet pas d'adapter la quantité de neige carbonique aux besoins précis pour la conservation de produits particuliers. Ce type d'enceinte est principalement utilisé pour la conservation et le transport de produits alimentaires surgelés. Pour le transport de produits alimentaires frais, tels que des steacks hachés ou des poulets, qui ne tolèrent pas des températures trop basses, on utilise généralement une enceinte isolée dépourvue de réserve de neige carbonique et préalablement portée à la température réfrigérée de conservation des produits avant leur stockage dans l'enceinte et l'expédition de l'enceinte chargée, ce qui impose que le temps de transport soit réduit au minimum.An isolated enclosure of this type is described in document EP-A-337,860, in the name of the Applicant. Currently, the bin is removable and has an open upper face to receive the load of dry ice from a dry ice container in bulk or in the form of pellets. This type of manual loading is delicate, not very rational, generates significant losses of CO₂ and does not make it possible to adapt the quantity of dry ice to precise needs for the conservation of particular products. This type of enclosure is mainly used for the storage and transport of frozen food products. For the transport of fresh food products, such as chopped steaks or chickens, which do not tolerate temperatures that are too low, an isolated enclosure is generally used without carbon dioxide snow reserve and previously brought to the refrigerated storage temperature of the products before their storage in the enclosure and the shipment of the loaded enclosure, which requires that the transport time be reduced to a minimum.

La présente invention a pour objet de proposer un procédé permettant un chargement rapide, fiable et aisément modulable du bac, même par un personnel non qualifié, nécessitant un minimum de manipulations, réduisant grandement les pertes en CO₂ et convenant pour la conservation de longue durée de produits alimentaires frais comme pour la conservation de produits alimentaires surgelés.The object of the present invention is to provide a method allowing rapid, reliable and easily adjustable loading of the tank, even by unqualified personnel, requiring minimum handling, greatly reducing CO₂ losses and suitable for long-term storage of fresh food products such as for the preservation of frozen food products.

Pour ce faire, selon une caractéristique de l'invention, le procédé comprend l'étape d'injecter dans le bac de l'enceinte une quantité dosée de CO₂ liquide sous pression de façon à y créer par détente une masse déterminée de neige carbonique, et le dosage du CO₂ liquide injecté est déterminé en fonction de durées d'injection prédéterminées modulées en fonction de paramètres climatiques.To do this, according to a characteristic of the invention, the method comprises the step of injecting into the tank of the enclosure a metered quantity of liquid CO₂ under pressure so as to create therein by relaxation a determined mass of carbon dioxide snow, and the dosage of the liquid CO₂ injected is determined as a function of predetermined injection durations modulated as a function of climatic parameters.

La présente invention a également pour objet de proposer une installation pour la mise en oeuvre du procédé, comportant une source de CO₂ liquide sous pression et une conduite de fourniture de CO₂ liquide reliée à un moyen distributeur d'un flux de CO₂ liquide dans le bac, le moyen distributeur comportant une vanne de distribution reliée à une unité de commande comportant des moyens de temporisation, le moyen distributeur étant suspendu à un bâti portant l'unité de commande et avantageusement solidaire d'un caisson muni de moyens d'aspiration de CO₂ gazeux vaporisé lors de l'injection du flux de CO₂ liquide dans le bac;The present invention also aims to provide an installation for implementing the method, comprising a source of pressurized liquid CO₂ and a liquid CO₂ supply pipe connected to a means for distributing a flow of liquid CO₂ in the tank. , the dispensing means comprising a dispensing valve connected to a control unit comprising timing means, the dispensing means being suspended from a frame carrying the control unit and advantageously secured to a box provided with CO₂ suction means gaseous vaporized during the injection of the liquid CO₂ flow into the tank;

Avantageusement, le bac est monté fixe dans l'enceinte et comporte une ouverture latérale de chargement en CO₂, typiquement destinée à être apairée au moyen distributeur.Advantageously, the tank is fixedly mounted in the enclosure and has a lateral CO₂ loading opening, typically intended to be paired with the dispensing means.

La présente invention a également pour objet un bac d'accumulation et de réserve de neige carbonique adapté pour une telle installation et une enceinte isolée transportable pourvue d'un tel bac.The present invention also relates to a storage tank and reserve of dry ice suitable for such an installation and an insulated transportable enclosure provided with such a tank.

D'autres caractéristiques et avantages de la présente invention ressortiront de la description suivante de modes de réalisation, donnés à titre illustratif mais nullement limitatif, faite en relation avec les dessins annexés, sur lesquels:

  • la figure 1 est une vue schématique d'un mode de réalisation d'une installation selon l'invention ;
  • la figure 2 est un graphe illustrant la production de neige carbonique avec le procédé d'injection selon l'invention ;
  • la figure 3 est un graphe comparatif montrant l'évolution de la température de produits frais dans une enceinte chargée en neige carbonique selon l'invention et une enceinte dépourvue de charge de neige carbonique;
  • la figure 4 est une vue schématique en perspective, partiellement en écorché, d'un bac selon un mode de réalisation particulier de l'invention ;
  • la figure 5 est une vue en coupe transversale, suivant la ligne V-V de la figure 4, du bac selon l'invention montrant le trajet des fluides dans le bac lors du chargement de ce dernier;
  • la figure 6 est une vue analogue à la figure 1 montrant un autre mode de réalisation de l'invention ;
  • la figure 7 est une vue en coupe transversale du boîtier distributeur/injecteur de la figure 6;
  • la figure 8 est une vue en perspective montrant l'accouplement du boîtier et du bac; et
  • la figure 9 est une vue schématique en coupe longitudinale de l'ensemble accouplé de la figure 8 montrant le trajet des fluides lors du chargement du bac.
Other characteristics and advantages of the present invention will emerge from the following description of embodiments, given by way of illustration but in no way limiting, made in relation to the appended drawings, in which:
  • Figure 1 is a schematic view of an embodiment of an installation according to the invention;
  • FIG. 2 is a graph illustrating the production of carbon dioxide snow with the injection process according to the invention;
  • FIG. 3 is a comparative graph showing the evolution of the temperature of fresh products in an enclosure loaded with carbon dioxide snow according to the invention and an enclosure devoid of carbon dioxide snow load;
  • Figure 4 is a schematic perspective view, partially broken away, of a container according to a particular embodiment of the invention;
  • Figure 5 is a cross-sectional view, along the line VV of Figure 4, of the container according to the invention showing the path of the fluids in the container when the latter is loaded;
  • Figure 6 is a view similar to Figure 1 showing another embodiment of the invention;
  • Figure 7 is a cross-sectional view of the distributor / injector housing of Figure 6;
  • Figure 8 is a perspective view showing the coupling of the housing and the tray; and
  • Figure 9 is a schematic view in longitudinal section of the coupled assembly of Figure 8 showing the path of the fluids during loading of the tank.

Sur la figure 1, on reconnaît un conteneur isotherme transportable 1 pour le transport de produits frais, tel que décrit dans le document EP-A-337.860 sus-mentionné, comportant une porte d'accès latérale omise sur le dessin pour montrer le bac à neige carbonique 2 suspendu dans la partie supérieure de la chambre intérieure du conteneur formant un volume 3 de chargement de produits. Sur la figure 1, on a représenté l'écran thermique 4, typiquement amovible, s'étendant à distance de la face intérieure du bac 2 et séparant ce dernier du volume 3 de chargement et d'entreposage de produits alimentaires frais. Selon un aspect de l'invention, le bac 2 est monté fixe dans le conteneur 1 et comporte, dans l'exemple représenté, une face avant pourvue d'une ouverture 5 d'accès pour le chargement en CO₂ du bac, comme on le verra plus avant.In Figure 1, there is a transportable insulated container 1 for the transport of fresh products, as described in document EP-A-337,860 mentioned above, comprising a side access door omitted from the drawing to show the container. dry ice 2 suspended in the upper part of the interior chamber of the container forming a volume 3 of product loading. In Figure 1, there is shown the heat shield 4, typically removable, extending at a distance from the inner face of the container 2 and separating the latter from the volume 3 for loading and storing fresh food products. According to one aspect of the invention, the tank 2 is mounted fixed in the container 1 and comprises, in the example shown, a front face provided with an access opening 5 for loading CO₂ from the tank, as is will see further.

L'installation comporte, en un poste de chargement, un réservoir 6 de CO₂ liquide à une pression typiquement entre 18 et 20 x 10⁵ Pa et à une température de -20°C entretenue par un groupe frigorifique 7. Du réservoir 6 part une conduite de fourniture de CO₂ liquide 8 pourvue de vannages adéquats, prolongée par un flexible 9 terminé par un moyen distributeur 10 pour introduire un flux de CO₂ liquide sous pression dans le bac 2 via l'ouverture 5. Le moyen distributeur 10, en l'occurrence sous forme d'un pistolet dans l'exemple représenté, est avantageusement suspendu, par un moyen de suspension élastique 11 à un bâti supérieur 12 solidaire d'une structure d'auvent articulée 13 munie de battants latéraux déployables 14 et destinée à être positionnée en regard de la face de chargement du conteneur 1 pour former un réceptacle de confinement des gaz froids générés lors du chargement du bac 2, qui sont évacués vers l'extérieur des locaux de travail par un dispositif d'évacuation 15 comportant une soufflante. Avantageusement, le moyen de suspension 11 est déplaçable le long de la partie supérieure du bâti 12 par un chariot 16 pour permettre le positionnement correct du pistolet 10 en regard de l'ouverture 5 du chargement du bac 2.The installation comprises, in a loading station, a tank 6 of liquid CO₂ at a pressure typically between 18 and 20 × 10⁵ Pa and at a temperature of -20 ° C maintained by a refrigeration unit 7. From the tank 6 there is a pipe for supplying liquid CO₂ 8 provided with adequate winnowing, extended by a flexible hose 9 terminated by a distributor means 10 for introducing a flow of liquid CO₂ under pressure into the tank 2 via the opening 5. The distributor means 10, in this case in the form of a pistol in the example shown, is advantageously suspended, by an elastic suspension means 11, from an upper frame 12 secured to an articulated awning structure 13 provided with deployable lateral flaps 14 and intended to be positioned in view of the loading face of the container 1 to form a receptacle for confining the cold gases generated during the loading of the tank 2, which are evacuated to the outside of the work premises by a exhaust device 15 comprising a blower. Advantageously, the suspension means 11 can be moved along the upper part of the frame 12 by a carriage 16 to allow the correct positioning of the gun 10 opposite the opening 5 of the loading of the tank 2.

Le pistolet 10 comporte typiquement un robinet manuel de fermeture/ ouverture 17 et, en amont de celui-ci, une électrovanne 18 reliée à un bloc de commande 19 monté sur l'auvent 13. Selon un aspect de l'invention, le boîtier de commande 19 comporte des moyens de temporisation réglables ou pré-établis permettant de sélectionner, en fonction de différents paramètres, les durées d'ouverture de l'électrovanne 18, donc les quantités de CO₂ liquide injecté dans le bac 2 et, partant, les quantités de neige carbonique formée par sublimation dans le bac. Cette injection s'effectue typiquement de façon que le jet de CO₂ liquide subisse au moins un impact dans le bac 2 de façon à éclater le jet et provoquer une production et une accumulation rapides de neige carbonique dans le bac. On a représenté sur la figure 2 une courbe montrant le régime de formation de neige carbonique dans le bac 2 en fonction du temps d'injection de CO₂ liquide en secondes. Le conteneur 1 et son bac 2 étant initialement à la température ambiante, la quantité de neige carbonique formée en-deçà de 10 secondes d'injection n'est pas déterminable de façon reproductible. Les points A à D de la courbe représentent des sauts du taux de transformation de CO₂ liquide/solide au fur et à mesure de l'injection dans le bac. Au point A, le taux de transformation est d'environ 21 %. Il augmente progressivement jusqu'à une valeur de l'ordre de 35 % jusqu'au point B, à partir duquel il reste sensiblement constant jusqu'au point C pour de nouveau augmenter jusqu'à une valeur légèrement supérieure à 40 % au point D pour rester sensiblement constant au-delà de ce point D. On constate donc qu'une quantité de 5 kg de neige carbonique est engendrée en moins de 20 secondes et qu'il suffit d'une durée d'injection de 25 secondes pour engendrer une masse de neige carbonique de 10 kg.The gun 10 typically comprises a manual closing / opening valve 17 and, upstream of this, a solenoid valve 18 connected to a control unit 19 mounted on the canopy 13. According to one aspect of the invention, the housing control 19 includes adjustable or pre-established timing means making it possible to select, as a function of different parameters, the opening times of the solenoid valve 18, therefore the quantities of liquid CO₂ injected into the tank 2 and, consequently, the quantities dry ice formed by sublimation in the tank. This injection is typically carried out so that the liquid CO₂ jet undergoes at least one impact in the tank 2 so as to burst the jet and cause rapid production and accumulation of carbon dioxide snow in the tank. There is shown in Figure 2 a curve showing the carbon dioxide snow formation regime in the tank 2 as a function of the liquid CO₂ injection time in seconds. The container 1 and its container 2 being initially at room temperature, the quantity of carbon dioxide snow formed within 10 seconds of injection cannot be reproducibly determined. Points A to D of the curve represent jumps in the transformation rate of liquid / solid CO₂ as and when injected into the tank. At point A, the conversion rate is around 21%. It gradually increases to a value of around 35% up to point B, from which it remains substantially constant up to point C to increase again to a value slightly greater than 40% at point D to remain appreciably constant beyond this point D. It can therefore be seen that a quantity of 5 kg of carbon dioxide snow is generated in less than 20 seconds and that an injection time of 25 seconds is sufficient to generate a dry ice mass of 10 kg.

Comme sus-mentionné, la souplesse du procédé selon l'invention permet de moduler aisément, en fonction de paramètres prédéterminés, tenant compte en particulier des conditions climatiques et des durées de transport prévues, la quantité de neige carbonique engendrée dans le conteneur, ainsi que d'adapter les quantités de neige carbonique à la conservation et au transport de produits alimentaires frais, dont la température doit être comprise entre 0 et 4°C, comme de produits surgelés, dont la température ne doit pas excéder -15°C.As mentioned above, the flexibility of the method according to the invention makes it possible to easily modulate, as a function of predetermined parameters, taking into account in particular the climatic conditions and the planned transport times, the quantity of carbon dioxide snow generated in the container, as well as adapt the quantities of dry ice to the storage and transport of fresh food products, including the temperature should be between 0 and 4 ° C, like frozen products, the temperature of which should not exceed -15 ° C.

A titre d'exemple, on a représenté ci-dessous un tableau de dosages standard pour un conteneur 1 d'une capacité utile d'environ 1200 litres avec un bac 2 dont la surface transversale est juste légèrement inférieure à la section utile horizontale de la chambre intérieure 3 du conteneur: Temps d'injection CO₂ secondes Neige carbonique engendrée PRODUITS FRAIS Transport hiver 15 s 4,88 kg Transport été 20 s 5,86 kg Transport week-end 30 s 9,32 kg PRODUITS SURGELES Transport hiver 30 s 9,32 kg Transport été 40 s 12,42 kg Transport week-end 50 s 15,88 kg By way of example, there is shown below a standard dosage table for a container 1 with a useful capacity of approximately 1200 liters with a tank 2 whose transverse surface is just slightly less than the horizontal useful section of the inner chamber 3 of the container: CO₂ injection time seconds Carbon dioxide snow generated FRESH PRODUCTS Winter transport 15 s 4.88 kg Summer transport 20s 5.86 kg Weekend transport 30 s 9.32 kg FROZEN PRODUCTS Winter transport 30 s 9.32 kg Summer transport 40s 12.42 kg Weekend transport 50 s 15.88 kg

Selon un aspect de l'invention, les différents temps d'injection peuvent être pré-établis dans le boîtier 19 et sélectionnables par des commutateurs frais/surgelés, hiver/été ou semaine/week-end. Ces durées d'injection peuvent également être pré-programmées dans des mémoires du boîtier 19 accessibles en composant des codes sur un clavier ou en introduisant une carte à puce incorporant de telles mémoires programmables (SRAM ou EEPROM).According to one aspect of the invention, the different injection times can be pre-established in the housing 19 and selectable by fresh / frozen, winter / summer or week / weekend switches. These injection durations can also be pre-programmed in memories of the housing 19 accessible by dialing codes on a keyboard or by introducing a smart card incorporating such programmable memories (SRAM or EEPROM).

Sur la figure 3, on a représenté les variations de température dans le temps d'un steack haché avec le procédé selon l'invention (courbe 2) et avec un procédé avec simple mise en froid préalable du produit et de son conteneur (courbe 1).In FIG. 3, the temperature variations over time of a chopped steak are represented with the method according to the invention (curve 2) and with a method with simple prior cooling of the product and its container (curve 1 ).

Comme sus-mentionné, I'écran thermique 4 est monté suspendu de façon amovible dans la partie supérieure du conteneur 1 pour l'utilisation à la conservation et au transport de produits frais, cet écran thermique étant démonté dans la configuration pour la conservation et le transport de produits surgelés moins sensibles à la proximité de la surface très froide constituée par la face inférieure du bac 2.As mentioned above, the heat shield 4 is removably mounted suspended in the upper part of the container 1 for use in the storage and transport of fresh products, this heat shield being dismantled in the configuration for storage and transport of frozen products less sensitive to the proximity of the very cold surface formed by the underside of tray 2.

Dans le mode de réalisation des figures 4 et 5, le bac 2 selon l'invention se présente sous la forme d'un boîtier parallélépipédique clos réalisé en tôles métalliques, typiquement en acier inoxydable et comportant notamment une paroi supérieure 20 et une face avant 21 traversée, au voisinage d'une paroi latérale 22, par un embout 50. Cet embout 50 constitue le prolongement en saillie vers l'extérieur d'une rampe d'injection 25 s'étendant dans le boîtier le long de la paroi latérale 22 et formée typiquement, sur son côté opposé à la paroi 22, avec une série d'orifices d'éjection équi-répartis 24. La rampe 23 supporte un profilé déflecteur à profil en L 25 s'étendant parallèlement à la rampe en regard des orifices 24. La paroi supérieure 20 du bac 3 comporte une découpe centrale recouverte d'un grillage 26 de façon à ménager, de part et d'autre du grillage 26, une première zone pleine 20A surplombant l'ensemble rampe d'injection 23/déflecteur 25 et une seconde zone pleine symétrique 20B.In the embodiment of FIGS. 4 and 5, the tank 2 according to the invention is in the form of a closed parallelepipedal box made of metal sheets, typically of stainless steel and comprising in particular an upper wall 20 and a front face 21 crossing, in the vicinity of a side wall 22, by an end piece 50. This end piece 50 constitutes the extension projecting towards the outside of an injection ramp 25 extending in the housing along the side wall 22 and typically formed, on its side opposite to the wall 22, with a series of equally distributed ejection orifices 24. The ramp 23 supports an L-shaped deflector profile 25 extending parallel to the ramp opposite the orifices 24 The upper wall 20 of the tank 3 has a central cutout covered with a screen 26 so as to provide, on either side of the screen 26, a first solid area 20A overhanging the injection rail 23 / deflector 25 assembly. and a second symmetrical full zone 20B.

Comme on le voit mieux sur la figure 5, les orifices 24 sont orientés de façon à éjecter chacun un jet de CO₂ liquide vers la paroi de fond du bac 2, ce jet étant renvoyé, par le déflecteur 25 disposé sous les orifices 24, vers la partie de voile plein 20A de la paroi supérieure 20 et de là, vers le fond du boîtier sous la deuxième partie de voile plein 20B, à l'opposé de la rampe d'injection 23, où s'accumule progressivement, par sublimation, une masse de neige carbonique 27, le CO₂ vaporisé lors de la constitution de cette masse 27 s'échappant, comme figuré par les flèches tiretées sur la figure 5, par le grillage 26 et se répandant dans l'espace intérieur 3 du conteneur 1 pour refroidir ce dernier, avant d'être évacué par la hotte 13. Le bac 2 comporte en outre des pattes de fixation 28 pour son montage à demeure dans la partie supérieure du volume intérieur 3, typiquement sur des colonnettes verticales servant également au montage amovible de l'écran thermique 4 s'étendant au-dessous du bac 2, à distance de celui-ci, lorsque le conteneur 1 est utilisé pour le transport de produits alimentaires frais à une température comprise entre 0 et 4°C.As best seen in FIG. 5, the orifices 24 are oriented so as to each eject a jet of liquid CO₂ towards the bottom wall of the tank 2, this jet being returned, by the deflector 25 disposed under the orifices 24, towards the full veil part 20A of the upper wall 20 and from there towards the bottom of the housing under the second full veil part 20B, opposite the injection ramp 23, where it gradually accumulates, by sublimation, a mass of dry ice 27, the CO₂ vaporized during the formation of this mass 27 escaping, as shown by the arrows dashed in FIG. 5, by the mesh 26 and spreading in the interior space 3 of the container 1 for cool the latter, before being evacuated by the hood 13. The tank 2 further comprises fixing lugs 28 for its permanent mounting in the upper part of the interior volume 3, typically on vertical balusters also serving for the removable mounting of the writing thermal year 4 extending below the tank 2, at a distance from the latter, when the container 1 is used for the transport of fresh food products at a temperature between 0 and 4 ° C.

Comme on le voit sur la figure 4, le moyen distributeur 10, suspendu au portique 12, est conformé intérieurement pour s'adapter par simple enfichage à l'embout 50, cet enfichage étant verrouillé par un verrou élastique 29 actionnable manuellement pour déverrouiller le pistolet et l'extraire de l'embout 50. Le manneton du robinet 17 est en outre couplé mécaniquement au verrou 29 de façon à ne permettre l'ouverture du robinet que lorsque le raccord 10 est correctement enfiché sur l'embout 50 et à ne permettre un enfichage que lorsque le robinet est en position fermée.As can be seen in FIG. 4, the dispensing means 10, suspended from the gantry 12, is internally shaped to adapt by simple plugging in to the end piece 50, this plugging being locked by a lock. elastic 29 which can be manually actuated to unlock the gun and extract it from the nozzle 50. The valve crank 17 is also mechanically coupled to the latch 29 so as to allow the valve to be opened only when the connector 10 is correctly inserted the end piece 50 and to allow insertion only when the valve is in the closed position.

Dans le mode de réalisation des figures 6 à 9, le bac 2 est dépourvu de face avant, ménageant ainsi une large ouverture d'accès 5 pour l'appariement avec un moyen distributeur 10, également suspendu au portique 12 et comprenant, ici, un boîtier d'injection parallélépipédique 30 comportant une face avant ouverte et deux demi-rampes d'injection 23A, 23B s'étendant transversalement dans le boîtier 30, pourvues d'orifices d'éjection 24 et reliées, via l'électrovanne 18, au flexible d'amenée 9.In the embodiment of Figures 6 to 9, the tank 2 has no front face, thus providing a wide access opening 5 for matching with a dispensing means 10, also suspended from the gantry 12 and comprising, here, a parallelepipedal injection housing 30 comprising an open front face and two injection half-ramps 23A, 23B extending transversely in the housing 30, provided with ejection orifices 24 and connected, via the solenoid valve 18, to the flexible intake 9.

Comme on le voit mieux sur la figure 9, les rampes 23A, 23B sont disposées dans le fond du boîtier 30, à distance de la face avant ouverte du boîtier dont les bords sont pourvus de cornières 31 formant logement pour recevoir les bords de la face avant du bac 2 dans une position d'accouplement de ces deux éléments verrouillée par un dispositif d'accouplement 32 constitué, dans l'exemple représenté, par un verrou déplaçable en rotation et en translation porté par une face latérale du boîtier 30 et coopérant avec une découpe conformée formée dans un cylindre rapporté sur la face latérale adjacente du bac 2. Le verrou comporte une poignée d'actionnement qui, en position verrouillée du verrou, actionne un contacteur 33 monté sur la face intérieure du boîtier 30 et fournissant un signal de validation au bloc électronique de commande 19. Le boîtier 30 comporte avantageusement, sur sa face arrière, une poignée de manutention 34.As best seen in Figure 9, the ramps 23A, 23B are arranged in the bottom of the housing 30, at a distance from the open front face of the housing, the edges of which are provided with angles 31 forming a housing for receiving the edges of the face front of the tank 2 in a coupling position of these two elements locked by a coupling device 32 constituted, in the example shown, by a lock movable in rotation and in translation carried by a side face of the housing 30 and cooperating with a shaped cutout formed in a cylinder attached to the adjacent side face of the tank 2. The lock comprises an actuating handle which, in the locked position of the lock, actuates a contactor 33 mounted on the inside of the housing 30 and providing a signal validation at the electronic control unit 19. The box 30 advantageously comprises, on its rear face, a handling handle 34.

Comme on le voit bien sur la figure 9, les injecteurs 24 sont orientés angulairement vers la paroi supérieure du boîtier 30 de façon à éjecter des jets de CO₂ liquide sous pression venant impacter cette paroi supérieure pour renvoyer, en les éclatant, les jets de CO₂ liquide vers le fond du bac 2 où le CO₂ liquide, détendu dans son trajet avec ricochet, produit la neige carbonique finement divisée 27 s'accumulant au fur et à mesure dans le fond du bac 2, comme dans le mode de réalisation des figures 4 et 5. Comme dans ce dernier, les injecteurs 24 peuvent être orientés vers le bas pour impacter un déflecteur renvoyant les jets vers la paroi supérieure du boîtier. A la fin du temps prédéterminé d'injection, un voyant de fin de cycle s'allume sur le bloc 19 et l'opérateur peut alors venir décrocher le boîtier 30 du bac 2.As can be seen in FIG. 9, the injectors 24 are angularly oriented towards the upper wall of the housing 30 so as to eject jets of liquid CO₂ under pressure which impact this upper wall to return, by bursting them, the jets of CO₂ liquid towards the bottom of tank 2 where the liquid CO₂, relaxed in its path with ricochet, produces the carbon dioxide snow finely divided 27 accumulating progressively in the bottom of tank 2, as in the embodiment of Figures 4 and 5. As in the latter, the injectors 24 can be oriented downwards to impact a deflector returning the jets to the upper wall of the housing. At the end of the predetermined injection time, an end-of-cycle indicator lamp lights up on the block 19 and the operator can then unhook the box 30 from the tank 2.

Quoique l'invention ait été décrite en relation avec un mode de réalisation particulier, elle ne s'en trouve pas limitée mais est au contraire susceptible de modifications et de variantes qui apparaîtront à l'homme de l'art.Although the invention has been described in relation to a particular embodiment, it is not limited thereto but is on the contrary subject to modifications and variants which will appear to those skilled in the art.

Claims (20)

Procédé de conservation à basse température de produits dans une enceinte isolée (1) comportant un volume de chargement (3) et au moins un bac de neige carbonique (2), comprenant l'étape d'injecter dans le bac (2) une quantité dosée de CO₂ liquide sous pression de façon à y créer par détente une masse déterminée de neige carbonique, caractérisé en ce que le dosage du CO₂ liquide injecté est déterminé en fonction de durées d'injection prédéterminées modulées en fonction de paramètres climatiques.Method for preserving products at low temperature in an isolated enclosure (1) comprising a loading volume (3) and at least one carbon dioxide snow tank (2), comprising the step of injecting into the tank (2) a quantity dosed with liquid CO₂ under pressure so as to create by relaxation a determined mass of carbon dioxide snow, characterized in that the dosage of the liquid CO₂ injected is determined as a function of predetermined injection times modulated as a function of climatic parameters. Procédé selon la revendication 1, caractérisé en ce que, pour la conservation de produits alimentaires frais, la durée d'injection est comprise entre 10 et 30 secondes.Method according to claim 1, characterized in that, for the preservation of fresh food products, the duration of injection is between 10 and 30 seconds. Procédé selon la revendication 1, caractérisé en ce que, pour la conservation de produits alimentaires surgelés, la durée d'injection est comprise entre 20 et 50 secondes.Method according to claim 1, characterized in that, for the preservation of frozen food products, the injection time is between 20 and 50 seconds. Installation pour la mise en oeuvre du procédé selon l'une des revendications précédentes, comprenant une enceinte isolée transportable (1) comportant un volume de chargement de produits (3) et au moins un bac de neige carbonique (2), une source de CO₂ liquide sous pression (6) et une conduite (8, 9) de fourniture de CO₂ liquide reliée à un moyen (10) distributeur de CO₂ liquide dans le bac (1) comprenant une vanne de distribution (18) reliée à une unité de commande (19) comportant des moyens de temporisation, caractérisée en ce que le moyen distributeur (10) est suspendu élastiquement (11) à un bâti (12, 13) portant l'unité de commande (19).Installation for implementing the method according to one of the preceding claims, comprising an insulated transportable enclosure (1) comprising a loading volume of products (3) and at least one carbon dioxide snow tank (2), a source of CO₂ pressurized liquid (6) and a pipe (8, 9) for supplying liquid CO₂ connected to a means (10) distributor of liquid CO₂ in the tank (1) comprising a distribution valve (18) connected to a control unit (19) comprising timing means, characterized in that the dispensing means (10) is suspended elastically (11) on a frame (12, 13) carrying the control unit (19). Installation selon la revendication 4, caractérisée en ce que le bâti est associé à un caisson (13) muni de moyens (15) d'aspiration de CO₂ gazeux.Installation according to claim 4, characterized in that the frame is associated with a box (13) provided with means (15) for sucking CO₂ gas. Installation selon la revendication 4 ou la revendication 5, caractérisée en ce que les moyens de temporisation sont pré-établis et sélectionnables en fonction de paramètres climatiques.Installation according to claim 4 or claim 5, characterized in that the delay means are pre-established and selectable as a function of climatic parameters. Installation selon l'une des revendications 4 à 6, caractérisée en ce que le bac (2) est monté fixe dans l'enceinte (1) et comporte une ouverture latérale (5; 50) de chargement en CO₂.Installation according to one of claims 4 to 6, characterized in that the tank (2) is fixedly mounted in the enclosure (1) and has a lateral opening (5; 50) for loading with CO₂. Installation selon la revendication 7, caractérisée en ce que le moyen distributeur (10) comporte un boîtier d'injection (30) ayant une ouverture de sortie et dans lequel est disposé au moins un injecteur (23, 24) orienté pour projeter un jet de CO₂ liquide vers un déflecteur dans le boîtier, dirigeant le jet vers l'ouverture de sortie et des moyens (31) pour positionner le boîtier (30) avec son ouverture de sortie en regard de l'ouverture (5) du bac (2).Installation according to claim 7, characterized in that the distributor means (10) comprises an injection box (30) having an outlet opening and in which is disposed at least one injector (23, 24) oriented to project a jet of CO₂ liquid to a deflector in the housing, directing the jet towards the outlet opening and means (31) for positioning the housing (30) with its outlet opening opposite the opening (5) of the tank (2) . Installation selon la revendication 8, caractérisée en ce que le bac (2) comporte une face avant ouverte, formant l'ouverture (5) et en ce que l'ouverture de sortie du boîtier (30) comprend des moyens (31) conformés pour engager les bords de la face avant ouverte du bac (2).Installation according to claim 8, characterized in that the tank (2) has an open front face, forming the opening (5) and in that the outlet opening of the housing (30) comprises means (31) shaped to engage the edges of the open front face of the tank (2). Installation selon la revendication 7, caractérisée en ce que le bac (2) comporte une rampe d'injection (23) comportant une extrémité (50) faisant saillie hors du bac et connectable au moyen distributeur (10).Installation according to claim 7, characterized in that the tank (2) comprises an injection ramp (23) having an end (50) projecting from the tank and connectable to the distributor means (10). Installation selon la revendication 10, caractérisée en ce que la rampe (23) comporte des orifices d'éjection (24) en regard d'un déflecteur de jet (25) disposé dans le bac (2).Installation according to claim 10, characterized in that the ramp (23) has ejection orifices (24) opposite a jet deflector (25) disposed in the tank (2). Installation selon l'une des revendications 4 à 6, caractérisée en ce que l'enceinte (1) comporte, entre le bac (2) et le volume de chargement (3), un écran thermique (4) amovible en cas d'utilisation de l'enceinte pour la conservation de produits surgelés.Installation according to one of claims 4 to 6, characterized in that the enclosure (1) comprises, between the tank (2) and the loading volume (3), a heat shield (4) removable in case of use of the enclosure for the conservation of frozen products. Bac de réserve de neige carbonique destiné à être disposé dans une enceinte isolée (1) de conservation de produits, caractérisé en ce qu'il se présente sous la forme d'un boîtier clos (2) comportant une paroi supérieure (20) munie d'au moins une ouverture (26) et une face latérale avant (21) traversée par un embout (50) relié à au moins un injecteur (23) disposé dans le boîtier et destiné au raccordement de l'injecteur à un circuit (9) d'amenée de CO₂ liquide sous pression.Dry ice storage tank intended to be placed in an isolated enclosure (1) for preserving products, characterized in that it is in the form of a closed box (2) comprising an upper wall (20) provided with '' at least one opening (26) and a front side face (21) crossed by a nozzle (50) connected to at least one injector (23) disposed in the housing and intended for connection of the injector to a circuit (9) supply of pressurized liquid CO₂. Bac selon la revendication 13, caractérisé en ce qu'il a une configuration générale parallélépipédique, l'injecteur (23) étant disposé au voisinage d'une face latérale (22) du bac (2) et présentant au moins un orifice d'éjection (24) orienté pour diriger un jet de CO₂ liquide vers l'intérieur du bac.Container according to claim 13, characterized in that it has a general parallelepiped configuration, the injector (23) being arranged in the vicinity of a lateral face (22) of the container (2) and having at least one ejection orifice (24) oriented to direct a jet of liquid CO₂ towards the interior of the tank. Bac selon la revendication 14, caractérisé en ce qu'il comporte un déflecteur (15) associé à l'injecteur (23), l'orifice d'éjection (24) étant orienté pour diriger le jet de CO₂ liquide vers le déflecteur (25).Tray according to claim 14, characterized in that it comprises a deflector (15) associated with the injector (23), the ejection orifice (24) being oriented to direct the jet of liquid CO₂ towards the deflector (25 ). Bac selon la revendication 15, caractérisé en ce que la paroi supérieure (20) comprend une première partie pleine (20A) recouvrant la zone de l'injecteur (23), l'orifice (24) étant dirigé vers la paroi inférieure du boîtier et le déflecteur (25) étant agencé pour renvoyer le jet de CO₂ liquide vers la première partie pleine (20A) de la paroi supérieure (20).Container according to claim 15, characterized in that the upper wall (20) comprises a first solid part (20A) covering the area of the injector (23), the orifice (24) being directed towards the lower wall of the housing and the deflector (25) being arranged to return the jet of liquid CO₂ to the first solid part (20A) of the upper wall (20). Bac selon la revendication 16, caractérisé en ce que la paroi supérieure (20) comprend une lumière grillagée (26).Tray according to claim 16, characterized in that the upper wall (20) comprises a screened opening (26). Enceinte isolée transportable comportant un bac selon l'une des revendications 13 à 17 monté à demeure dans l'enceinte (1).Transportable insulated enclosure comprising a container according to one of claims 13 to 17 permanently mounted in the enclosure (1). Enceinte selon la revendication 18, caractérisée en ce qu'elle comporte, entre le bac (2) et un volume interne de chargement de produits (3), un écran thermique amovible (4).Enclosure according to claim 18, characterized in that it comprises, between the tank (2) and an internal volume for loading products (3), a removable heat shield (4). Enceinte selon la revendication 19, caractérisée en ce qu'elle comporte une ouverture latérale obturable d'accès au volume interne et au bac (2).Enclosure according to claim 19, characterized in that it comprises a closable lateral opening for access to the internal volume and to the tank (2).
EP94401392A 1993-06-23 1994-06-22 Reserve tank for carbon dioxide snow Expired - Lifetime EP0631096B2 (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
FR9307615A FR2706990B1 (en) 1993-06-23 1993-06-23
FR9307615 1993-06-23
US08/285,718 US5511379A (en) 1993-06-23 1994-08-04 Process for the preservation of products at low temperature in an insulated chamber, installation for practicing the process, insulated chamber and container for such a chamber
CA002129863A CA2129863A1 (en) 1993-06-23 1994-08-10 Process for low-temperature storing of products in an isolated chamber, plant for the implementation of said process, isolated chamber, and tray for said chamber
CH02814/94A CH690458A5 (en) 1993-06-23 1994-09-15 Low temperature conservation of foodstuffs in enclosure with liquid carbon dioxide

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EP0631096A1 true EP0631096A1 (en) 1994-12-28
EP0631096B1 EP0631096B1 (en) 1997-07-16
EP0631096B2 EP0631096B2 (en) 2001-02-07

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EP94401392A Expired - Lifetime EP0631096B2 (en) 1993-06-23 1994-06-22 Reserve tank for carbon dioxide snow

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US (2) US5511379A (en)
EP (1) EP0631096B2 (en)
CA (1) CA2129863A1 (en)
CH (1) CH690458A5 (en)
DE (1) DE69404231T3 (en)
ES (1) ES2106468T5 (en)
FR (1) FR2706990B1 (en)

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EP0717246A1 (en) * 1994-12-12 1996-06-19 Colpo Company Limited Method and apparatus for transporting/storing chilled goods
FR2751623A1 (en) * 1996-07-23 1998-01-30 Olivo Isothermic container with refrigerated chamber
FR2752049A1 (en) * 1996-07-30 1998-02-06 Olivo ISOTHERMAL CONTAINER WITH REFRIGERATED RESERVE
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EP0854334A1 (en) * 1997-01-20 1998-07-22 Carboxyque Française Container for receiving carbon dioxide snow
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EP0717246A1 (en) * 1994-12-12 1996-06-19 Colpo Company Limited Method and apparatus for transporting/storing chilled goods
FR2751623A1 (en) * 1996-07-23 1998-01-30 Olivo Isothermic container with refrigerated chamber
FR2752049A1 (en) * 1996-07-30 1998-02-06 Olivo ISOTHERMAL CONTAINER WITH REFRIGERATED RESERVE
EP0823600A3 (en) * 1996-07-30 1998-07-15 Olivo Isothermal container with cold storage
FR2752456A1 (en) * 1996-08-13 1998-02-20 Grandi Rene Vincent Thermally regulated transfer arrangement for refrigerated products from vat to storage chamber
EP0854334A1 (en) * 1997-01-20 1998-07-22 Carboxyque Française Container for receiving carbon dioxide snow
FR2758620A1 (en) 1997-01-20 1998-07-24 Carboxyque Francaise CARBONIC SNOW RECEPTION BOX AND ITS APPLICATION TO AN ENCLOSURE AND A PRODUCT RETENTION FACILITY
EP0863374A2 (en) 1997-03-05 1998-09-09 MONETTI S.p.A. Solid refrigerant reservoir for isothermal containers, particularly for the transportation of products under controlled temperature
WO1998040680A2 (en) 1997-03-11 1998-09-17 L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Refrigerated catering service trolley and installation for reloading refrigerating agent
FR2760826A1 (en) 1997-03-11 1998-09-18 Carboxyque Francaise REFRIGERATED TROLLEY AND REFRIGERANT RELOADING SYSTEM
DE19749055A1 (en) * 1997-11-06 1999-05-27 Messer France Sa Cooling containers and methods
DE19749055C2 (en) * 1997-11-06 2003-05-08 Messer France Sa Cooling containers
DE19808267A1 (en) * 1998-02-27 1999-09-02 Messer France Sa Filling and removal module for a cooling module and method for filling a cooling module
EP1408295A3 (en) * 2002-10-11 2005-05-25 Air Liquide Deutschland GmbH Method and device for cooling goods in a thermally insulated transport container using a cooling module
WO2011061431A1 (en) 2009-11-19 2011-05-26 L'Air Liquide, Société Anonyme pour l'Etude et l'Exploitation des Procédés Georges Claude Method for low-temperature preservation of materials in an insulated container during transport
DE102010013056A1 (en) 2010-03-26 2011-09-29 Tkt Gassysteme Gmbh Method for filling cooling cell of insulated container with cooling medium, particularly with liquid carbon dioxide, involves receiving cooling medium in interior of cooling cell of insulated container provided with filling unit
DE102010013079A1 (en) 2010-03-26 2011-09-29 Tkt Gassysteme Gmbh Isolation container for transporting cooled and/or frozen food products in shop, has container door articulated on housing, and locking unit inserted and/or removed into and/or from passage opening by actuator
DE102010013056B4 (en) 2010-03-26 2018-05-09 Tkt Gassysteme Gmbh Method and device for filling a cooling cell of an insulating container with a cooling medium
EP2597402A3 (en) * 2011-11-26 2017-11-29 Messer Austria GmbH Method for filling a cooling module assigned to a transport container for transporting cooled products
EP3653976A1 (en) 2018-11-16 2020-05-20 Neopost Technologies Locker system for delivery of heat sensitive products
US11378323B2 (en) 2018-11-16 2022-07-05 Quadient Technologies France Locker system for delivery of heat sensitive products
CN112317745A (en) * 2020-09-22 2021-02-05 成都飞机工业（集团）有限责任公司 Automatic additive manufacturing powder storage device and storage method

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EP0631096B1 (en) 1997-07-16
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FR2706990B1 (en) 1995-08-04
DE69404231T2 (en) 1997-12-18
ES2106468T3 (en) 1997-11-01
CA2129863A1 (en) 1996-02-11
FR2706990A1 (en) 1994-12-30
US5511379A (en) 1996-04-30
DE69404231D1 (en) 1997-08-21
ES2106468T5 (en) 2001-03-16
DE69404231T3 (en) 2001-05-23
US5566553A (en) 1996-10-22

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