WO2007042727A1 - System for injecting carbon dioxide snow in isothermal containers and related containers - Google Patents

System for injecting carbon dioxide snow in isothermal containers and related containers Download PDF

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Publication number
WO2007042727A1
WO2007042727A1 PCT/FR2006/051013 FR2006051013W WO2007042727A1 WO 2007042727 A1 WO2007042727 A1 WO 2007042727A1 FR 2006051013 W FR2006051013 W FR 2006051013W WO 2007042727 A1 WO2007042727 A1 WO 2007042727A1
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WO
WIPO (PCT)
Prior art keywords
container
tank
tray
isothermal
reservoir
Prior art date
Application number
PCT/FR2006/051013
Other languages
French (fr)
Inventor
Claude Gibot
Philippe Gibert
Original Assignee
L'Air Liquide, Société Anonyme pour l'Etude et l'Exploitation des Procédés Georges Claude
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by L'Air Liquide, Société Anonyme pour l'Etude et l'Exploitation des Procédés Georges Claude filed Critical L'Air Liquide, Société Anonyme pour l'Etude et l'Exploitation des Procédés Georges Claude
Priority to EP06820275A priority Critical patent/EP1938031A1/en
Publication of WO2007042727A1 publication Critical patent/WO2007042727A1/en

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Classifications

    • 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
    • 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
    • F25D2400/00—General features of, or devices for refrigerators, cold rooms, ice-boxes, or for cooling or freezing apparatus not covered by any other subclass
    • F25D2400/20—Carts specially adapted for transporting objects to be cooled

Definitions

  • Dry ice injection system in insulated containers and associated containers.
  • the invention relates to the field of transportation of perishable foodstuffs in isothermal containers, where the maintenance of the cold chain is provided by solid phase carbon dioxide ("dry ice").
  • Such isothermal containers commonly include a cryogenic compartment disposed in the upper part of the container, above the compartment where are placed the products to be kept at controlled temperature.
  • this upper compartment receives a reservoir for containing a refrigerant, such as carbon dioxide in the solid phase, the sublimation releases cold gases, compensating for heat inputs through the joints between the container and its door or through the insulation of the container.
  • a refrigerant such as carbon dioxide in the solid phase
  • cryogenic compartment refrigerant tank, and product storage compartment
  • product storage compartment last container closing door (front of the container). Therefore, the tank is filled with cryogenic fluid in an "open door” situation, which, as will be detailed below, necessarily leads to a very particular and, in this case, penalizing logistics.
  • the grouping of container doors is carried out in order to direct them to the stage of CO2 loading of the cryogenic tanks of each container into an injection chamber;
  • the containers are unbundled, spaced out to close the doors, close the doors, and consolidate the loaded containers; - then proceed to the final stage of docking for the loading of containers on truck.
  • One of the objectives of the present invention is then to propose a new container for preserving and / or transporting perishable food products, making it possible to improve the situation described above by alleviating the logistic scheme currently practiced.
  • the present invention provides a technical solution to the problem mentioned above by a new dedicated container, allowing an injection of the cryogenic fluid into the cryogenic tank in the closed container door situation.
  • the present invention thus relates to an isothermal container for the preservation and / or transport of perishable food products, of the type comprising a cryogenic compartment and a product storage compartment, as well as a cryogenic tank, able to be mounted in the cryogenic compartment, provided with a connector allowing in particular its connection to a liquid phase source of carbon dioxide, a tank adapted to refrigerate the storage compartment of the products, the container being provided with a front part having a closing door of the container, and a rear part, the container being characterized in that the reservoir can be charged with cryogenic fluid within the container with the container door closed, by the implementation of the following measures:
  • the container is provided, at its rear part or at one of its two lateral faces, with a tight-closing trapdoor; -
  • the tank is disposed within the container so as to have its connection to the trap door.
  • the tank according to the invention can also adopt one or more of the following technical characteristics: the hatch is located on the rear face of the container.
  • the tank is provided with separation means able to retain the dry ice but to let the gas generated.
  • the reservoir comprises: a substantially rectangular parallelepiped-shaped carbon dioxide receiving tank provided on the one hand with injection means adapted to cooperate with an injector connected to a source of liquid CO2 and to allow the injection of dry ice in the tray, and on the other hand whose upper face has a perforation zone capable of allowing the evacuation of the gas generated inside the tray; a lid made integral with the upper face of the receiving tray so as to leave between the upper face and the cover a space for the accumulation of the generated gas; the presence, on one of the lateral faces of the receiving tray, of said injection means and of evacuation means which are on the one hand in communication with said space allowing the accumulation and which are on the other hand adapted for cooperate with external means of evacuation of the generated gases, said connection of the reservoir being positioned opposite the trap comprising said injection means and said evacuation means.
  • - Said cover also leaves a space to allow, outside of the exhaust phases to the outside of the generated gas, the passage of gas generated from the tray to the product storage compartment.
  • the tank comprises a heat shield in a thermally insulating material, adapted to be installed under the tray to protect against radiation goods stored in the container.
  • the injection means are adapted to cooperate with an injector equipped with a horizontal-cylindrical cylindrical outlet nozzle, extending towards the inside of the tank, adapted to direct the injection of dry ice substantially tangentially to a side wall of the tray so as to create a vortex in the tray.
  • FIG. 1 is a schematic representation of 3 containers according to the invention shown in grouping closed doors and ready to be charged with CO2 through their hatch “T" located on the rear face of each container.
  • FIG. 2 is a schematic representation of partial sectional views of a container according to the invention: in the upper part of the figure a sectional side view of the container, and in the lower part of the figure a view of above the container.
  • FIG. 3 is a schematic representation of a gun for implementing the invention, implementing a dual function: injection of the cryogenic fluid and extraction of the generated gases.
  • FIG. 4 is a partial schematic representation of a tank according to the invention provided with a perforation zone adapted to allow evacuation of the gas generated inside the tray.
  • FIG. 5 is a partial schematic representation of a reservoir according to the invention making it possible to visualize one of the injection modes using an outlet nozzle of cylindrical shape with an axis. horizontal, extending inwardly of the tray, adapted to create a vortex structure.
  • FIG 1 It is recognized in Figure 1 the presence of three containers 10, according to the invention, grouping situation, closed door.
  • the containers have in the foreground of the figure their rear face (AR), the front face of each container (AV) being turned towards the bottom of the figure, each container door P being closed (it is shown in the figure the hinge " C "of each door).
  • the container is provided, at its rear face, with a tight-closing hatch T, which can be seen at the level of the container on the right in FIG.
  • the storage tank of the cryogenic fluid which is disposed in the upper part of the container, at what may be called its cryogenic compartment, is disposed within the container so as to have its connectors ( 4/5) opposite the hatch.
  • References 11, 4 and 5 in the figure then respectively designate the seal of the hatch, the tank connector adapted to be placed in communication with a liquid CO2 injector, and an opening which is adapted to cooperate with means external extraction of gases generated in the tank.
  • FIG. 2 provides two partial sectional views of a container according to the invention: in the upper part of the figure, a sectional side view of the container, and in the lower part of the figure a top view of the container. .
  • the front face AV of the container is visualized again with its door P, the rear face AR, the tank 1 in the upper part of the container, with its heat shield 12, and the connector 4 of the container, adapted to be connected with a CO2 injection gun 20.
  • the reference 30 furthermore denotes an extractable means connectable to the opening 5 of the reservoir for extracting the gases generated in the reservoir during charging of the liquid CO2 tank.
  • the means 20 and 30 can be completely disengaged, or be integral in the same tool, the tool then comprises the injector and the extractor and connects in one action on the connector 4 and the opening 5.
  • C ' is the latter mode which is shown in Figure 3 and the global tool, provided with the handle 40, allows to achieve the total connection in a single gesture.
  • FIG. 4 shows a partial diagrammatic representation of an embodiment of a tank 1 according to the invention, comprising a carbon dioxide snow box, of substantially parallelepipedal shape, provided with a lid 2 and on the other hand whose upper face has a perforation zone 3 adapted to allow evacuation of the gas generated inside the tray.
  • Figure 4 shows the perforation area in the form of a partial burst under the lid.
  • a connector device comprising means 4 for injecting the cryogenic liquid into the tank, adapted to cooperate with external means for supplying cryogenic liquid (injection gun type such as the gun 20 or the overall tool 40 mentioned above), and an opening 5, which is on the one hand in communication with the space between the tank and the lid, space which allows the accumulation of gases, and which is adapted to cooperate with external means for evacuation of the generated gases (suction means coming to become solid with the opening 5 such as the extractor 30 or the overall tool 40 mentioned above).
  • the perforation zone is defined to allow:
  • FIG. 5 is a partial schematic representation of a tank according to the invention for displaying one of the injection modes using an outlet nozzle 6 of cylindrical shape with a horizontal axis, extending towards the inside of the tank , and which is adapted to create a vortex structure 7. It has been found in practice that such a nozzle shape produces snow which is stored in a geometric Vortex motion by allowing nearly 90% of the volume of the receptacle to be occupied.
  • the reservoir described in connection with one or each of FIGS. 4 and 5 is only one possible embodiment of the reservoir, which tank, contrary to the prior art, is not "waterproof", it allows the escape of gases: when filling via the suction system that connects to its connections, and in stable operation (food preservation) by the fact that the lid leaves a space not only above the upper surface of the tank (which is equipped with the mesh surface) but also in the front, to allow the gas, in operation, door closed, to reach the storage compartment products and perform its function of conservation / cooling of products.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)

Abstract

The invention concerns an isothermal container (10) for preserving and/or transporting perishable food products of the type comprising a cryogenic product storage compartment, as well as a cryogenic reservoir (1), adapted to be mounted in the cryogenic compartment, provided with connections (4 5) enabling it to be connected to a liquid-phase carbon dioxide source, the reservoir being adapted to refrigerate the product storage compartment, the container being provided with a front part (AV) including a door (P) for closing the container, and a rear part (AR). The invention is characterized in that the reservoir can be loaded with cryogenic fluid inside the container with the container door closed, via the following: the container is provided, at its rear part or at one of its two lateral surfaces, with a hermetically sealed hatch (T); the reservoir is arranged inside the container to that its connections (4, 5) are located opposite the hatch.

Description

Système d'injection de neige carbonique dans des conteneurs isothermes et conteneurs associés. Dry ice injection system in insulated containers and associated containers.
L'invention concerne le domaine du transport des denrées alimentaires périssables en conteneurs isothermes, où le maintien de la chaîne du froid est assuré par du dioxyde de carbone en phase solide ("neige carbonique").The invention relates to the field of transportation of perishable foodstuffs in isothermal containers, where the maintenance of the cold chain is provided by solid phase carbon dioxide ("dry ice").
De tels conteneurs isothermes comprennent couramment un compartiment cryogénique disposé dans la partie supérieure du conteneur, au- dessus du compartiment où sont disposés les produits devant être conservés à température contrôlée.Such isothermal containers commonly include a cryogenic compartment disposed in the upper part of the container, above the compartment where are placed the products to be kept at controlled temperature.
Traditionnellement, ce compartiment supérieur reçoit un réservoir destiné à contenir un produit réfrigérant, tel que du dioxyde de carbone en phase solide, dont la sublimation libère des gaz froids, compensant les entrées de chaleur à travers les joints entre le conteneur et sa porte ou encore à travers l'isolant du conteneur.Traditionally, this upper compartment receives a reservoir for containing a refrigerant, such as carbon dioxide in the solid phase, the sublimation releases cold gases, compensating for heat inputs through the joints between the container and its door or through the insulation of the container.
En effet ces conteneurs présentent toujours une structure où compartiment cryogénique, réservoir de produit réfrigérant, et compartiment de stockage des produits, sont situés dernière la porte de fermeture du conteneur (face avant du conteneur). On effectue donc le chargement du réservoir en fluide cryogénique en situation de « porte ouverte » ce qui, comme on va le détailler ci-dessous, conduit nécessairement à une logistique très particulière, et en l'occurrence pénalisante.Indeed, these containers always have a structure where cryogenic compartment, refrigerant tank, and product storage compartment, are located last container closing door (front of the container). Therefore, the tank is filled with cryogenic fluid in an "open door" situation, which, as will be detailed below, necessarily leads to a very particular and, in this case, penalizing logistics.
Typiquement dans la plupart des cas, on procède dans le site utilisateur considéré aux étapes suivantes :Typically in most cases, one proceeds to the user site in the following steps:
- on effectue en chambre froide le chargement des produits alimentaires dans le compartiment bas des conteneurs ;- In cold storage room loading of food products in the lower compartment of the containers;
- on effectue le groupage portes ouvertes des conteneurs pour les diriger vers l'étape de chargement en CO2 des réservoirs cryogéniques de chaque conteneur dans un sas d'injection ;- The grouping of container doors is carried out in order to direct them to the stage of CO2 loading of the cryogenic tanks of each container into an injection chamber;
- on procède ensuite, après le chargement en CO2, au dégroupage des conteneurs, à leur espacement afin de pourvoir en fermer les portes, à la fermeture des portes, et au regroupage des conteneurs chargés ; - on procède alors à l'étape finale de mise à quai en vue du chargement des conteneurs sur camion.- after the CO2 loading, the containers are unbundled, spaced out to close the doors, close the doors, and consolidate the loaded containers; - then proceed to the final stage of docking for the loading of containers on truck.
On le voit bien par la description précédente, le schéma logistique actuel est très consommateur, en temps et en main d'œuvre nécessaire à la réalisation de toutes ces étapes de manutention.As can be seen from the previous description, the current logistic scheme is very consumer, time and manpower necessary to achieve all these steps of handling.
Un des objectifs de la présente invention est alors de proposer un nouveau conteneur de conservation et/ou transport de produits alimentaires périssables, permettant d'améliorer la situation précédemment décrite en allégeant le schéma logistique couramment pratiqué actuellement.One of the objectives of the present invention is then to propose a new container for preserving and / or transporting perishable food products, making it possible to improve the situation described above by alleviating the logistic scheme currently practiced.
Comme on le verra ci-dessous plus en détails, la présente invention apporte une solution technique au problème évoqué ci-dessus par un nouveau conteneur, dédié, permettant une injection du fluide cryogénique dans le réservoir cryogénique en situation de porte du conteneur fermée.As will be seen below in more detail, the present invention provides a technical solution to the problem mentioned above by a new dedicated container, allowing an injection of the cryogenic fluid into the cryogenic tank in the closed container door situation.
On conçoit alors tous les avantages d'un tel arrangement, et notamment :We then conceive all the advantages of such an arrangement, and in particular:
- une meilleure protection des produits par rapport à l'environnement (dès leur sortie de la chambre froide) ; - un incontestable gain de main d'œuvre par l'évitement des opérations de dégroupage/espacement/fermeture/regroupage- better protection of products with respect to the environment (as soon as they leave the cold room); - an undeniable gain in manpower through the avoidance of unbundling / separation / closure / consolidation operations
- sans oublier le gain de surface qui était mobilisée par les manœuvres de l'étape qui a été supprimée.- without forgetting the surface gain that was mobilized by the maneuvers of the step that was removed.
La présente invention concerne alors un conteneur isotherme de conservation et/ou transport de produits alimentaires périssables, du type comportant un compartiment cryogénique et un compartiment de stockage des produits, ainsi qu'un réservoir cryogénique, apte à être monté dans le compartiment cryogénique, muni d'une connectique permettant notamment son raccordement à une source de dioxyde de carbone en phase liquide, réservoir adapté pour réfrigérer le compartiment de stockage des produits, le conteneur étant muni d'une partie avant présentant une porte de fermeture du conteneur, et d'une partie arrière, le conteneur se caractérisant en ce que le réservoir peut être chargé en fluide cryogénique au sein du conteneur la porte du conteneur étant fermée, par la mise en œuvre des mesures suivantes :The present invention thus relates to an isothermal container for the preservation and / or transport of perishable food products, of the type comprising a cryogenic compartment and a product storage compartment, as well as a cryogenic tank, able to be mounted in the cryogenic compartment, provided with a connector allowing in particular its connection to a liquid phase source of carbon dioxide, a tank adapted to refrigerate the storage compartment of the products, the container being provided with a front part having a closing door of the container, and a rear part, the container being characterized in that the reservoir can be charged with cryogenic fluid within the container with the container door closed, by the implementation of the following measures:
- le conteneur est muni, au niveau de sa partie arrière ou au niveau de l'une des ses deux faces latérales, d'une trappe à fermeture étanche; - le réservoir est disposé au sein du conteneur de manière à présenter sa connectique en vis a vis de la trappe.the container is provided, at its rear part or at one of its two lateral faces, with a tight-closing trapdoor; - The tank is disposed within the container so as to have its connection to the trap door.
Le réservoir selon l'invention peut également adopter l'une ou plusieurs des caractéristiques techniques suivantes : - la trappe est située sur la face arrière du conteneur.The tank according to the invention can also adopt one or more of the following technical characteristics: the hatch is located on the rear face of the container.
- le réservoir est muni de moyens de séparation aptes à retenir la neige carbonique mais à laisser passer le gaz généré.- The tank is provided with separation means able to retain the dry ice but to let the gas generated.
- le réservoir comprend : un bac de réception de neige carbonique, de forme sensiblement parallélépipédique, muni d'une part de moyens d'injection adaptés pour coopérer avec un injecteur relié à une source de CO2 liquide et permettre l'injection de neige carbonique dans le bac, et d'autre part dont la face supérieure présente une zone de perforation apte à permettre l'évacuation du gaz généré à l'intérieur du bac; un couvercle rendu solidaire de la face supérieure du bac de réception de façon à laisser entre la face supérieure et le couvercle un espace permettant l'accumulation du gaz généré; la présence, sur l'une des faces latérales du bac de réception, desdits moyens d'injection et de moyens d'évacuation qui sont d'une part en communication avec ledit espace permettant l'accumulation et qui sont d'autre part adaptés pour coopérer avec des moyens extérieurs d'évacuation des gaz générés, ladite connectique du réservoir étant positionnée en vis à vis de la trappe comprenant lesdits moyens d'injection et lesdits moyens d'évacuation. - ledit couvercle laisse en outre un espace pour permettre, en dehors des phases d'évacuation vers l'extérieur des gaz générés, le passage des gaz générés depuis le bac vers le compartiment de stockage des produits.the reservoir comprises: a substantially rectangular parallelepiped-shaped carbon dioxide receiving tank provided on the one hand with injection means adapted to cooperate with an injector connected to a source of liquid CO2 and to allow the injection of dry ice in the tray, and on the other hand whose upper face has a perforation zone capable of allowing the evacuation of the gas generated inside the tray; a lid made integral with the upper face of the receiving tray so as to leave between the upper face and the cover a space for the accumulation of the generated gas; the presence, on one of the lateral faces of the receiving tray, of said injection means and of evacuation means which are on the one hand in communication with said space allowing the accumulation and which are on the other hand adapted for cooperate with external means of evacuation of the generated gases, said connection of the reservoir being positioned opposite the trap comprising said injection means and said evacuation means. - Said cover also leaves a space to allow, outside of the exhaust phases to the outside of the generated gas, the passage of gas generated from the tray to the product storage compartment.
- le réservoir comprend un écran thermique en une matière thermiquement isolante, apte à être installé sous le bac afin de protéger contre les rayonnements les denrées stockées dans le conteneur.- The tank comprises a heat shield in a thermally insulating material, adapted to be installed under the tray to protect against radiation goods stored in the container.
- les moyens d'injection sont adaptés pour coopérer avec un injecteur muni d'une buse de sortie de forme cylindrique à axe horizontal, s'étendant vers l'intérieur du bac, adapté pour orienter l'injection de neige carbonique sensiblement tangentiellement à une paroi latérale du bac de manière à créer un tourbillon dans le bac.the injection means are adapted to cooperate with an injector equipped with a horizontal-cylindrical cylindrical outlet nozzle, extending towards the inside of the tank, adapted to direct the injection of dry ice substantially tangentially to a side wall of the tray so as to create a vortex in the tray.
D'autres caractéristiques et avantages ressortiront de la description suivante, donnée uniquement à titre d'exemple et faite en référence aux figures annexées sur lesquelles :Other characteristics and advantages will emerge from the following description, given solely by way of example and with reference to the appended figures in which:
- la figure 1 est une représentation schématique de 3 conteneurs conformes à l'invention représentés en situation de groupage portes fermées et prêts à être chargés en CO2 au travers de leur trappe "T" située sur la face arrière de chaque conteneur. - la figure 2 est une représentation schématique de vues partielles en coupe d'un conteneur conforme à l'invention : dans la partie haute de la figure une vue en coupe de coté du conteneur, et dans la partie basse de la figure une vue de dessus du conteneur.- Figure 1 is a schematic representation of 3 containers according to the invention shown in grouping closed doors and ready to be charged with CO2 through their hatch "T" located on the rear face of each container. FIG. 2 is a schematic representation of partial sectional views of a container according to the invention: in the upper part of the figure a sectional side view of the container, and in the lower part of the figure a view of above the container.
La figure 3 est une représentation schématique d'un pistolet permettant la mise en œuvre de l'invention, mettant en œuvre une double fonction : injection du fluide cryogénique et extraction des gaz générés.Figure 3 is a schematic representation of a gun for implementing the invention, implementing a dual function: injection of the cryogenic fluid and extraction of the generated gases.
- la figure 4 est une représentation schématique partielle d'un réservoir conforme à l'invention muni d'une zone de perforation apte à permettre l'évacuation du gaz généré à l'intérieur du bac. - la figure 5 est une représentation schématique partielle d'un réservoir conforme à l'invention permettant de visualiser un des modes d'injection mettant en œuvre une buse de sortie de forme cylindrique à axe horizontal, s'étendant vers l'intérieur du bac, adaptée pour créer une structure de vortex.- Figure 4 is a partial schematic representation of a tank according to the invention provided with a perforation zone adapted to allow evacuation of the gas generated inside the tray. FIG. 5 is a partial schematic representation of a reservoir according to the invention making it possible to visualize one of the injection modes using an outlet nozzle of cylindrical shape with an axis. horizontal, extending inwardly of the tray, adapted to create a vortex structure.
On reconnaît sur la figure 1 la présence de trois conteneurs 10, conformes à l'invention, en situation de groupage, porte fermée. Les conteneurs présentent au premier plan de la figure leur face arrière (AR), la face avant de chaque conteneur (AV) étant tournée vers le fond de la figure, chaque porte P de conteneur étant fermée (on visualise sur la figure la charnière "C" de chaque porte).It is recognized in Figure 1 the presence of three containers 10, according to the invention, grouping situation, closed door. The containers have in the foreground of the figure their rear face (AR), the front face of each container (AV) being turned towards the bottom of the figure, each container door P being closed (it is shown in the figure the hinge " C "of each door).
Conformément à l'invention, le conteneur est muni, au niveau de sa face arrière, d'une trappe T à fermeture étanche, trappe que l'on peut voir relevée au niveau du conteneur de droite sur la figure 1.According to the invention, the container is provided, at its rear face, with a tight-closing hatch T, which can be seen at the level of the container on the right in FIG.
Conformément à l'invention, le réservoir de stockage du fluide cryogénique qui est disposé dans la partie haute du conteneur, au niveau de ce que l'on peut appeler son compartiment cryogénique, est disposé au sein du conteneur de manière à présenter sa connectique (4/5) en vis a vis de la trappe. On visualise cet aspect dans le conteneur de droite, mais l'on visualisera mieux le réservoir et sa connectique grâce à la figure 4 ci-après.According to the invention, the storage tank of the cryogenic fluid which is disposed in the upper part of the container, at what may be called its cryogenic compartment, is disposed within the container so as to have its connectors ( 4/5) opposite the hatch. We visualize this aspect in the container on the right, but we will better visualize the tank and its connections thanks to figure 4 below.
Les références 11 , 4 et 5 sur la figure désignent alors respectivement le joint d'étanchéité de la trappe, le connecteur du réservoir apte à être mis en communication avec un injecteur de CO2 liquide, et une ouverture qui est adaptée pour coopérer avec des moyens extérieurs d'extraction des gaz générés dans le réservoir.References 11, 4 and 5 in the figure then respectively designate the seal of the hatch, the tank connector adapted to be placed in communication with a liquid CO2 injector, and an opening which is adapted to cooperate with means external extraction of gases generated in the tank.
Notons dès maintenant que l'on doit entendre par la notion de « compartiment cryogénique » un espace situé traditionnellement dans la partie haute du conteneur, cet espace étant ou non matérialisé (par des rails, une paroi inférieure etc.).Let us note right now that we must understand by the notion of "cryogenic compartment" a space traditionally located in the upper part of the container, this space being or not materialized (by rails, a lower wall etc.).
La figure 2 fournit deux vues partielles en coupe d'un conteneur conforme à l'invention : dans la partie haute de la figure, une vue en coupe de coté du conteneur, et dans la partie basse de la figure une vue de dessus du conteneur.FIG. 2 provides two partial sectional views of a container according to the invention: in the upper part of the figure, a sectional side view of the container, and in the lower part of the figure a top view of the container. .
On y visualise à nouveau la face avant AV du conteneur avec sa porte P, la face arrière AR, le réservoir 1 dans la partie haute du conteneur, avec son écran thermique 12, ainsi que la connectique 4 du conteneur, apte à être connectée avec un pistolet 20 d'injection du CO2.The front face AV of the container is visualized again with its door P, the rear face AR, the tank 1 in the upper part of the container, with its heat shield 12, and the connector 4 of the container, adapted to be connected with a CO2 injection gun 20.
La référence 30 désigne par ailleurs un moyen d'extraction connectable sur l'ouverture 5 du réservoir pour extraire les gaz générés dans le réservoir lors du chargement du réservoir en CO2 liquide.The reference 30 furthermore denotes an extractable means connectable to the opening 5 of the reservoir for extracting the gases generated in the reservoir during charging of the liquid CO2 tank.
Les moyens 20 et 30 peuvent être totalement désolidarisés, ou bien être solidaires dans un même outil, l'outil comprend alors l'injecteur et l'extracteur et se connecte en une seule action sur le connecteur 4 et l'ouverture 5. C'est ce dernier mode qui est représenté en figure 3 et l'outil global, muni de la poignée 40, permet de réaliser la connexion totale en un seul geste.The means 20 and 30 can be completely disengaged, or be integral in the same tool, the tool then comprises the injector and the extractor and connects in one action on the connector 4 and the opening 5. C ' is the latter mode which is shown in Figure 3 and the global tool, provided with the handle 40, allows to achieve the total connection in a single gesture.
On reconnaît sur la figure 4 une représentation schématique partielle d'un mode de réalisation d'un réservoir 1 conforme à l'invention, comportant un bac de réception de neige carbonique, de forme sensiblement parallélépipédique, muni d'un couvercle 2 et d'autre part dont la face supérieure présente une zone de perforation 3 apte à permettre l'évacuation du gaz généré à l'intérieur du bac. La figure 4 permet de visualiser la zone de perforation sous la forme d'un éclaté partiel sous le couvercle. On visualise également sur une face latérale du bac la présence d'un dispositif connectique comprenant des moyens 4 d'injection du liquide cryogénique dans le bac, aptes à coopérer avec des moyens extérieurs d'approvisionnement en liquide cryogénique (du type pistolet d'injection tel que le pistolet 20 ou l'outil global 40 évoqués précédemment), et une ouverture 5, qui est d'une part en communication avec l'espace situé entre le bac et le couvercle, espace qui permet l'accumulation des gaz, et qui est adaptée pour coopérer avec des moyens extérieurs d'évacuation des gaz générés (moyens d'aspiration venant se solidariser avec l'ouverture 5 tels que l'extracteur 30 ou l'outil global 40 évoqués précédemment ). La zone de perforation est définie pour permettre :FIG. 4 shows a partial diagrammatic representation of an embodiment of a tank 1 according to the invention, comprising a carbon dioxide snow box, of substantially parallelepipedal shape, provided with a lid 2 and on the other hand whose upper face has a perforation zone 3 adapted to allow evacuation of the gas generated inside the tray. Figure 4 shows the perforation area in the form of a partial burst under the lid. It also shows on a side face of the tray the presence of a connector device comprising means 4 for injecting the cryogenic liquid into the tank, adapted to cooperate with external means for supplying cryogenic liquid (injection gun type such as the gun 20 or the overall tool 40 mentioned above), and an opening 5, which is on the one hand in communication with the space between the tank and the lid, space which allows the accumulation of gases, and which is adapted to cooperate with external means for evacuation of the generated gases (suction means coming to become solid with the opening 5 such as the extractor 30 or the overall tool 40 mentioned above). The perforation zone is defined to allow:
- de créer une légère surpression résiduelle au sein du réceptacle, qui permet d'obtenir un tassement de la neige carbonique produite et donc d'améliorer la densité de la neige produite ; - l'évacuation du gaz, ce qui permet d'obtenir un bon rendement de transformation.- Create a slight residual pressure within the receptacle, which allows to obtain a settlement of the dry ice produced and thus improve the density of the snow produced; the evacuation of the gas, which makes it possible to obtain a good transformation yield.
La figure 5 est une représentation schématique partielle d'un réservoir conforme à l'invention permettant de visualiser un des modes d'injection mettant en œuvre une buse de sortie 6 de forme cylindrique à axe horizontal, s'étendant vers l'intérieur du bac, et qui est adaptée pour créer une structure 7 de vortex . On a constaté en pratique qu'une telle forme de buse produit une neige qui se stocke suivant un mouvement géométrique de Vortex en permettant l'occupation de près de 90% du volume du réceptacle.FIG. 5 is a partial schematic representation of a tank according to the invention for displaying one of the injection modes using an outlet nozzle 6 of cylindrical shape with a horizontal axis, extending towards the inside of the tank , and which is adapted to create a vortex structure 7. It has been found in practice that such a nozzle shape produces snow which is stored in a geometric Vortex motion by allowing nearly 90% of the volume of the receptacle to be occupied.
Comme il apparaîtra clairement à l'homme du métier, le réservoir décrit en liaison avec l'une ou chacune des figures 4 et 5 n'est qu'un mode de réalisation possible du réservoir, réservoir qui contrairement à l'art antérieur n'est pas "étanche", il permet l'échappement des gaz : lors du remplissage via le système d'aspiration qui se branche sur sa connectique, et en fonctionnement stable (conservation de aliments) par le fait que le couvercle laisse un espace non seulement au dessus de la face supérieure du bac (qui est munie de la surface grillagée) mais aussi à l'avant, pour permettre au gaz, en fonctionnement, porte fermée, de rejoindre le compartiment de stockage des produits et d'effectuer sa fonction de conservation/refroidissement des produits.As will be clear to those skilled in the art, the reservoir described in connection with one or each of FIGS. 4 and 5 is only one possible embodiment of the reservoir, which tank, contrary to the prior art, is not "waterproof", it allows the escape of gases: when filling via the suction system that connects to its connections, and in stable operation (food preservation) by the fact that the lid leaves a space not only above the upper surface of the tank (which is equipped with the mesh surface) but also in the front, to allow the gas, in operation, door closed, to reach the storage compartment products and perform its function of conservation / cooling of products.
Signalons également que si l'on a décrit dans ce qui précède un exemple de mise en œuvre où la trappe est située sur la face arrière du conteneur, on pourrait parfaitement envisager (même si on le conçoit c'est un arrangement moins pratique) de positionner la trappe sur l'une des deux faces latérales du conteneur et dans ce denier cas on comprend que les conteneurs seront positionnés sur l'engin de manutention à 90° par rapport à leur position dans le cas d'une trappe à l'arrière, afin que la trappe soit toujours aisément accessible. Note also that if we have described in the above an example of implementation where the hatch is located on the rear face of the container, we could perfectly consider (even if it is conceived it is a less practical arrangement) of position the hatch on one of the two side faces of the container and in this latter case it is understood that the containers will be positioned on the handling equipment at 90 ° to their position in the case of a hatch at the rear , so that the hatch is always easily accessible.

Claims

Revendications claims
1. Conteneur (10) isotherme de conservation et/ou transport de produits alimentaires périssables, du type comportant un compartiment cryogénique et un compartiment de stockage des produits, ainsi qu'un réservoir cryogénique (1), apte à être monté dans le compartiment cryogénique, muni d'une connectique (4, 5) permettant notamment son raccordement à une source de dioxyde de carbone en phase liquide, réservoir adapté pour réfrigérer le compartiment de stockage des produits, le conteneur étant muni d'une partie avant (AV) présentant une porte (P) de fermeture du conteneur, et d'une partie arrière (AR), et se caractérisant en ce que le réservoir peut être chargé en fluide cryogénique au sein du conteneur la porte du conteneur étant fermée, par la mise en œuvre des mesures suivantes :1. Container (10) isothermal preservation and / or transport of perishable food products, of the type comprising a cryogenic compartment and a product storage compartment, and a cryogenic tank (1), suitable for being mounted in the cryogenic compartment , provided with a connector (4, 5) allowing in particular its connection to a liquid phase source of carbon dioxide, a tank adapted to refrigerate the product storage compartment, the container being provided with a front part (AV) presenting a door (P) for closing the container, and a rear part (AR), and characterized in that the reservoir can be loaded with cryogenic fluid within the container, the container door being closed, by the implementation of following measures:
- le conteneur est muni, au niveau de sa partie arrière ou au niveau de l'une des ses deux faces latérales, d'une trappe (T) à fermeture étanche;- The container is provided at its rear portion or at one of its two lateral faces, a hatch (T) sealingly closed;
- le réservoir est disposé au sein du conteneur de manière à présenter sa connectique (4, 5) en vis a vis de la trappe.- The tank is disposed within the container so as to have its connectors (4, 5) opposite the hatch.
2. Conteneur isotherme selon la revendication 1 , caractérisé en ce que la trappe est située sur la face arrière du conteneur.2. Isothermal container according to claim 1, characterized in that the hatch is located on the rear face of the container.
3. Conteneur isotherme selon la revendication 1 ou 2, caractérisé en ce que le réservoir est muni de moyens de séparation aptes à retenir la neige carbonique mais à laisser passer le gaz généré à l'intérieur du réservoir.3. Isothermal container according to claim 1 or 2, characterized in that the tank is provided with separating means adapted to retain the dry ice but let the gas generated inside the tank.
4. Conteneur isotherme selon la revendication 3, caractérisé en ce que le réservoir comprend :4. Isothermal container according to claim 3, characterized in that the reservoir comprises:
- un bac de réception de neige carbonique, de forme sensiblement parallélépipédique, muni d'une part de moyens d'injection adaptés pour coopérer avec un injecteur relié à une source de CO2 liquide et permettre l'injection de neige carbonique dans le bac, et d'autre part dont la face supérieure présente une zone de perforation apte à permettre l'évacuation du gaz généré à l'intérieur du bac; - un couvercle rendu solidaire de la face supérieure du bac de réception de façon à laisser entre la face supérieure et le couvercle un espace permettant l'accumulation du gaz généré;a carbon dioxide snow box, of substantially parallelepipedic shape, provided on the one hand with injection means adapted to cooperate with an injector connected to a source of liquid CO2 and to allow the injection of dry ice into the tank, and on the other hand whose upper face has a perforation zone adapted to allow evacuation of the gas generated inside the tray; - A lid made integral with the upper face of the receiving tray so as to leave between the upper face and the cover a space for the accumulation of the generated gas;
- la présence, sur l'une des faces latérales du bac de réception, desdits moyens d'injection et de moyens d'évacuation qui sont d'une part en communication avec ledit espace permettant l'accumulation et qui sont d'autre part adaptés pour coopérer avec des moyens extérieurs d'évacuation des gaz générés, ladite connectique du réservoir qui est positionnée en vis à vis de la trappe comprenant lesdits moyens d'injection et lesdits moyens d'évacuation.the presence, on one of the lateral faces of the receiving tray, of said injection means and of evacuation means which are on the one hand in communication with said space for accumulation and which are, on the other hand, adapted to cooperate with external means of evacuation of the generated gases, said connection of the reservoir which is positioned opposite the trap comprising said injection means and said evacuation means.
5. Conteneur isotherme selon la revendication 4, caractérisé en ce que ledit couvercle laisse en outre un espace pour permettre, en dehors des phases d'évacuation vers l'extérieur des gaz générés, le passage des gaz générés depuis le bac vers le compartiment de stockage des produits.5. Isothermal container according to claim 4, characterized in that said lid also leaves a space to allow, outside the phases of evacuation to the outside of the generated gases, the passage of the gases generated from the tray to the compartment of product storage.
6. Conteneur isotherme selon la revendication 4 ou 5, caractérisé en ce que le réservoir comprend un écran thermique en une matière thermiquement isolante, apte à être installé sous le bac afin de protéger contre les rayonnements les denrées stockées dans le conteneur.6. Isothermal container according to claim 4 or 5, characterized in that the tank comprises a heat shield in a thermally insulating material, adapted to be installed under the tray to protect against radiation goods stored in the container.
7. Conteneur isotherme selon l'une des revendications 4 à 6, caractérisé en ce que les moyens d'injection sont adaptés pour coopérer avec un injecteur muni d'une buse de sortie de forme cylindrique à axe horizontal, s'étendant vers l'intérieur du bac, adapté pour orienter l'injection de neige carbonique sensiblement tangentiellement à une paroi latérale du bac de manière à créer un tourbillon dans le bac.7. Isothermal container according to one of claims 4 to 6, characterized in that the injection means are adapted to cooperate with an injector provided with a cylindrical shaped outlet nozzle with a horizontal axis, extending towards the interior of the tray, adapted to direct the injection of dry ice substantially tangentially to a side wall of the tray so as to create a vortex in the tray.
8. Conteneur isotherme selon l'une des revendications précédentes, caractérisé en ce que la connectique du conteneur est apte à le rendre connectable à un outil unique qui comprend un injecteur de CO2 et un moyen d'extraction des gaz générés dans le réservoir, outil connectable en une seule action sur le réservoir. 8. Isothermal container according to one of the preceding claims, characterized in that the connector of the container is adapted to make it connectable to a single tool which comprises a CO2 injector and a means for extracting the gases generated in the reservoir, tool connectable in a single action on the tank.
PCT/FR2006/051013 2005-10-12 2006-10-10 System for injecting carbon dioxide snow in isothermal containers and related containers WO2007042727A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP06820275A EP1938031A1 (en) 2005-10-12 2006-10-10 System for injecting carbon dioxide snow in isothermal containers and related containers

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FR0553106 2005-10-12
FR0553106A FR2891899B1 (en) 2005-10-12 2005-10-12 CARBONIC SNOW INJECTION SYSTEM IN ISOTHERMAL CONTAINERS AND ASSOCIATED CONTAINERS

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CN110806056A (en) * 2019-11-27 2020-02-18 合肥美科制冷技术有限公司 Combined refrigerator sealing strip and combined refrigerator with same

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FR2971330B1 (en) * 2011-02-09 2015-07-17 Acp Polska SYSTEM FOR INTRODUCING A REFRIGERATING AGENT IN A CONTAINER
EP2781862A1 (en) * 2013-03-19 2014-09-24 Socamel Technologies Refrigerated carriage with an embedded device for cooling and maintaining cold
FR3031171B1 (en) * 2014-12-29 2016-12-30 Olivo CRYOGENIC TANK FOR REFRIGERANT COMPARTMENT OF ISOTHERMAL CONTAINER

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CN110806056A (en) * 2019-11-27 2020-02-18 合肥美科制冷技术有限公司 Combined refrigerator sealing strip and combined refrigerator with same

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FR2891899B1 (en) 2007-11-30
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