EP3246642A1 - Kryogenischer behälter für die kühlabteilung eines wärmeschutzbehälters - Google Patents

Kryogenischer behälter für die kühlabteilung eines wärmeschutzbehälters Download PDF

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Publication number
EP3246642A1
EP3246642A1 EP16170461.4A EP16170461A EP3246642A1 EP 3246642 A1 EP3246642 A1 EP 3246642A1 EP 16170461 A EP16170461 A EP 16170461A EP 3246642 A1 EP3246642 A1 EP 3246642A1
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EP
European Patent Office
Prior art keywords
tank
chamber
wall
front wall
chambers
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP16170461.4A
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English (en)
French (fr)
Inventor
Hélène-Françoise OLIVO DANSE
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Olivo SAS
Original Assignee
Olivo SAS
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Filing date
Publication date
Application filed by Olivo SAS filed Critical Olivo SAS
Priority to EP16170461.4A priority Critical patent/EP3246642A1/de
Publication of EP3246642A1 publication Critical patent/EP3246642A1/de
Withdrawn legal-status Critical Current

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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
    • 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
    • F25D2303/00—Details of devices using other cold materials; Details of devices using cold-storage bodies
    • F25D2303/08—Devices using cold storage material, i.e. ice or other freezable liquid
    • F25D2303/082—Devices using cold storage material, i.e. ice or other freezable liquid disposed in a cold storage element not forming part of a container for products to be cooled, e.g. ice pack or gel accumulator
    • F25D2303/0821—Devices using cold storage material, i.e. ice or other freezable liquid disposed in a cold storage element not forming part of a container for products to be cooled, e.g. ice pack or gel accumulator the element placed in a compartment which can be opened without the need of opening the container itself
    • 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
    • F25D2303/00—Details of devices using other cold materials; Details of devices using cold-storage bodies
    • F25D2303/08—Devices using cold storage material, i.e. ice or other freezable liquid
    • F25D2303/084—Position of the cold storage material in relationship to a product to be cooled
    • F25D2303/0844—Position of the cold storage material in relationship to a product to be cooled above the product

Definitions

  • the invention relates to a cryogenic tank for isothermal container cooler compartment.
  • Isothermal containers using cryogenic refrigeration are generally made with isothermal walls, sandwich type, with a core of polyurethane foam.
  • the walls can be constituted by assembled panels or be molded in one piece.
  • the invention relates more particularly to containers in which the refrigerating compartment receives a reservoir which is in the shape of an upwardly open box and in the form of a drawer slidably mounted on slides.
  • This tank is intended to contain a refrigerant, such as liquid phase carbon dioxide whose expansion forms dry ice, compensating for thermal losses by the seals, between container and door, and through the insulation of the container.
  • the tank comprises a compartment or two compartments which, called chambers, have different cold diffusion capacities and are intended, one, for the preservation of fresh products and, the other, for the preservation of products. frozen.
  • the front wall of the tank which is accessible when the container door is open, is traversed by at least one orifice for the injection of carbon dioxide in the liquid phase and at least one wide opening for extracting carbon dioxide from the expansion of the liquid CO2 during the loading of one of the chambers.
  • This charging is performed by means of devices, injecting into the chamber selected, a quantity of carbon dioxide in the liquid phase, dosed according to the products whose temperature must be maintained and according to the expected duration of this maintenance. Other devices suck the gas forming in the tank during the carbon dioxide filling of the chamber.
  • each room is equipped with a jetbreaker, such as a metal strainer, whose functions are, on the one hand, to brake the energy of the gas jets forming the snow to prevent them from damaging the filter media, and, on the other hand, to distribute the dry ice, resulting from the expansion of the liquid carbon dioxide, in a uniform and homogeneous manner in the chamber.
  • a jetbreaker such as a metal strainer
  • the underside of the tank constitutes the exchange surface with the storage compartment.
  • the bottom of the chambers have different conductivities.
  • the room assigned to fresh products is sufficiently insulated to limit the heat exchange, to restore a temperature of about 0 ° C inside the container storage compartment, while the room assigned to frozen products has a more conductive and calibrated metallic bottom, in thickness and surface, to restore a temperature of the order of -25 ° C, with a dry ice at -78.5 ° C.
  • Containers with cryogenic tanks and loading facilities are described in the documents EP 0823600 , EP0942244 , EP1291594 , FR2836543 and FR2839774 in the name of the applicant.
  • This equipment cooperates with a loading station equipped with devices, such as guns, comprising feed means for dosing dry ice according to the type of food, the duration of transport, its ambient conditions and the thermal characteristics. of the container.
  • the station is supplied with liquid CO2 and has all the safety features, operators no longer directly handling the refrigerant.
  • Such equipment offers a cryogenic refrigeration bi-temperature for the alternative transport of fresh or frozen products.
  • the risk of freezing fresh products is resolved.
  • the temperature for frozen foods is limited to -25 ° C to reduce CO2 consumption.
  • the invention envisaged cooperating with loading stations whose gas supply means comprise, for each chamber, two dispensing cannulaes passing through the front wall of the tank and whose nozzles distribute to the minus one jet towards the jet of the other cannula.
  • This mode of formation of the snow by fragmentation against an equivalent jet reduces but does not cancel the violence of the jets on the filtering medium covering the tank and does not make it possible to eliminate the breakers, nor to obtain a good distribution of the snow in the room concerned.
  • the object of the invention is to provide a dry ice tank, for cryogenic refrigeration mono or bi-temperature of an isothermal container made of any material, to reduce the violence of the jets, to ensure a good distribution of snow in the entire storage chamber concerned and to obtain a significant reduction in the weight of this tank and that of the additional parts it contains, to improve the stability of the container.
  • the invention relates to a cryogenic tank for an isothermal container cooler compartment made of any material, said tank being in the form of an open box upwards, and divided or not by a longitudinal, internal and insulating partition, into two snow storage chambers.
  • the means ensuring the retention and distribution of snow in a storage chamber (A and B) during the supply of dioxide of carbon are constituted for each chamber by a deflecting wall extending longitudinally from the front wall towards the rear part of the reservoir, the deflecting wall being substantially horizontal, having a length greater than that of the cannulas and ensuring, over the entire surface of the chamber (A or B) and without other means, the distribution of the snow flow formed by the telescoping of the jets of the two cannulas passing through the front wall.
  • the combination of the deflecting wall with the two dispensing cannulas diffusing opposing jets fragmenting by telescoping reduces the force of the jets and allows to remove all jet bursts. This has the effect of limiting the additional parts to the only deflecting wall distributing the snow in the storage chamber, significantly lighten the drawer and facilitate its deconstruction before recycling. In addition, the useful volume of the chambers is thus increased and can receive more refrigerant.
  • the deflecting wall is common to the two chambers (A and B) and is constituted by a plate, flat and dimensionally stable, inclined on the horizontal, forming, starting from the front wall, an angle opening towards the rear and having a value between 10 and 30 degrees.
  • the total mass of the tank is considerably reduced compared to that of the current tanks, while providing the same functions during filling and thermal diffusion.
  • the baffle wall is integral with a reinforcement ensuring the retention of the filter media.
  • This monolithism promotes assembly and simplifies disassembly, since for the recycling of materials, it is sufficient to separate from the structure of the reservoir filter media retaining frame.
  • the baffle wall also comprises, in each of the chambers, a vertical plate, flat and dimensionally stable, disposed substantially in the vertical median plane of the two injection cannulas of the liquid carbon dioxide feed means assigned to each bedroom.
  • the embodiment shown corresponds to the application of the invention to a container made of expanded polymer with closed cells, and in particular expanded polypropylene (EPP), but the invention also applies to containers in all materials.
  • EPP expanded polypropylene
  • the container 1 is formed by coated C-shaped elements 2 stacked on each other and clamped between end members 3.
  • the elements 2 and 3, as well as the front door 4, are made of PPE.
  • the inner part of the container comprises a refrigerant compartment R, containing the carbon dioxide storage tank S, and a storage compartment C for fresh products or frozen products.
  • the structure of the tank S is also monolithically made of closed-cell expanded polymer, for example expanded polypropylene (EPP), but it can also be produced by rotomoulding with injection of insulating foam between its walls.
  • EPP expanded polypropylene
  • the structure of the tank S is in the shape of a box open upwards, that is to say has a front wall 5, a rear wall 6, two side walls 7 and a bottom 8.
  • the reservoir shown being biapplication, it also has a longitudinal wall 9 dividing it into a chamber A, with insulating bottom 8, assigned to maintain the temperature of the fresh products, and a chamber B, with diffusing bottom, assigned to maintain the temperature of the frozen products.
  • the reservoir is drawer-shaped and is slidably mounted in the upper horizontal guides 2a formed between the elements 2 and 3 of the container.
  • the figure 6 shows that, in the storage chamber A, the insulating bottom 8 has a greater thickness than that of the vertical walls 5 to 7, for example between 20 and 50 millimeters, in order to limit the heat exchange between the dry ice at a temperature of the order of -78 ° C, contained in the chamber A, and the storage compartment C underlying, and then assigned to the storage of fresh products at a temperature of the order of 0 to 2 or 4 ° C.
  • the figure 3 shows that the bottom 8 of the storage chamber B is crossed by a cutout 10 allowing the snow 11 to come into contact with a diffusing bottom 12, consisting of a plate of heat-conducting material, for example of thin aluminum .
  • the plate 12 extends at least partially below the bottom 8 of the chamber A to increase the exchange surface with the storage chamber C.
  • the plate 12 is positioned and fixed on the structure S of the tank R by metal sections 13 of Z section and having a wing resting on the peripheral edge of the blank 10, a wing coming against the inner face of the blank and a wing coming into contact with the plate and used for its attachment, for example by screws, not shown.
  • the upper edges of the vertical walls 5, 6, 7 and 9 of the tank serve to support a filter medium 15, able to retain the snow but to pass the carbon dioxide generated by the sublimation of the snow.
  • This media extends over the entire surface of the tank and is applied by a gap frame 16 having cutouts 16a, for the passage of gas.
  • the armature 16 is metallic and is fixed on the structure S by screws 17 ( figure 5 ).
  • FIGs 2 to 6 show that the part of the armature 16 coming above the longitudinal wall 9 supports a corrugated spacer bar 18, able to come against the ceiling 19 of the space 20 to delimit, between this ceiling and the armature, a zone of expansion of the residual gas.
  • the figure 4 shows that this space 20 communicates each chamber A or B with a removable loading unit 23, thanks to oblong openings 22 formed in the front wall 5 of the tank S and visible Figures 1 to 4 .
  • the figure 4 shows that the loading assembly 23 is composed of a housing 23, for example suspended from the cable 24 of a bracket, not shown, and can be brought into sealing engagement against the front face of the front wall 5.
  • the seal is provided by a gasket 25 protruding from the front face of the housing and coming into abutment against the smooth and flat front face of the front wall 5.
  • the liquid phase carbon dioxide injection means in the reservoir S are constituted, not by a single cannula, as is the usual solution, but by two parallel cannulas 28. and spaced apart in the horizontal plane.
  • the two cannulas 28 project from the front face of the assembly 23 and can be engaged in one or the other pairs of holes in the front wall 5 of the tank.
  • each cannula passes through a tubular guide insert 30 screwed into the wall 5 ( figure 4 ) to enter either room A or B.
  • cannulas have a diameter of the order of 16 millimeters and penetrate into the selected compartment to a depth of about 50 to 130 millimeters.
  • Their ends are equipped with nozzles 32 which, as shown in FIG. figure 6 in the case of the supply of the chamber B, diffuse at least partly in the direction of the nozzle vis-à-vis the neighboring cannula.
  • the snow 11 forming by expansion at the outlet of the nozzle is distributed on the bottom of the compartment B or A by a deflecting wall 33 which, in the production of Figures 2 to 6 , is common to both chambers.
  • This deflecting wall is constituted by a plate, flat and dimensionally stable, which, starting from the front wall 5 in the direction of the rear part of the reservoir extends longitudinally beyond the end of the nozzles and for example over a length of 1 order of 2 to 3 times their length.
  • the wall 33 has a starting section inclined on the horizontal forming an angle a opening rearwardly and having a value between 10 and 30 degrees.
  • the plate 33 is preferably monolithic with the lacunary reinforcement 16 for retaining the filtering medium 15, so as to simplify assembly and disassembly at the end of the tank's life. In a variant it is reported on the frame 16.
  • the deflection means comprise vertical deflecting walls 34, specific to each of the chambers A and B.
  • Each deflecting wall is constituted by a vertical plate 34, flat and dimensionally stable. This wall extends vertically between the bottom and the ceiling of the chamber and is disposed substantially in the vertical median plane of the two injection cannulas 28 of the supply means 23.
  • the vertical plates 34 are carried by the reinforcement 16 for retaining the filter medium, and more precisely by the deflector plate 33 which contributes to the filling in snow of the chamber A or B.

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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)
EP16170461.4A 2016-05-19 2016-05-19 Kryogenischer behälter für die kühlabteilung eines wärmeschutzbehälters Withdrawn EP3246642A1 (de)

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EP16170461.4A EP3246642A1 (de) 2016-05-19 2016-05-19 Kryogenischer behälter für die kühlabteilung eines wärmeschutzbehälters

Applications Claiming Priority (1)

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EP16170461.4A EP3246642A1 (de) 2016-05-19 2016-05-19 Kryogenischer behälter für die kühlabteilung eines wärmeschutzbehälters

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EP3246642A1 true EP3246642A1 (de) 2017-11-22

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111229334A (zh) * 2020-03-30 2020-06-05 中国科学院西北生态环境资源研究院 一种研究储雪大小和形状对储雪效果影响的实验装置
DE102019005745A1 (de) * 2019-08-16 2021-02-18 Messer Group Gmbh Vorrichtung und Verfahren zum Dosieren von Kohlendioxidschnee

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0823600A2 (de) 1996-07-30 1998-02-11 Olivo Isothermischer Behälter mit Kältespeicher
EP0942244A1 (de) 1998-03-10 1999-09-15 Olivo Strahlzerteiler für Kryofach eines isothermischen Behälters
US6109058A (en) * 1998-10-07 2000-08-29 Franklin, Jr.; Paul R. Insulated freight container with recessed CO2 system
EP1291594A2 (de) 2001-09-07 2003-03-12 Olivo Automatische Zufuhrvorrichtung für ein Kühlfach eines isothermischen Behälters
FR2836543A1 (fr) 2002-02-25 2003-08-29 Olivo Reservoir renforce pour compartiment cryogenique de conteneur isotherme
FR2839774A1 (fr) 2002-05-17 2003-11-21 Olivo Reservoir cryogenique a diffusion adaptable pour conteneur isotherme
EP1724538A1 (de) * 2005-05-20 2006-11-22 Olivo Logistiksystem für den Transport von frischen oder gefrorenen Produkten
FR3017937A1 (fr) 2014-02-24 2015-08-28 Olivo Conteneur isotherme pour la conservation de produits divers

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0823600A2 (de) 1996-07-30 1998-02-11 Olivo Isothermischer Behälter mit Kältespeicher
EP0942244A1 (de) 1998-03-10 1999-09-15 Olivo Strahlzerteiler für Kryofach eines isothermischen Behälters
US6109058A (en) * 1998-10-07 2000-08-29 Franklin, Jr.; Paul R. Insulated freight container with recessed CO2 system
EP1291594A2 (de) 2001-09-07 2003-03-12 Olivo Automatische Zufuhrvorrichtung für ein Kühlfach eines isothermischen Behälters
FR2836543A1 (fr) 2002-02-25 2003-08-29 Olivo Reservoir renforce pour compartiment cryogenique de conteneur isotherme
FR2839774A1 (fr) 2002-05-17 2003-11-21 Olivo Reservoir cryogenique a diffusion adaptable pour conteneur isotherme
EP1724538A1 (de) * 2005-05-20 2006-11-22 Olivo Logistiksystem für den Transport von frischen oder gefrorenen Produkten
FR3017937A1 (fr) 2014-02-24 2015-08-28 Olivo Conteneur isotherme pour la conservation de produits divers

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102019005745A1 (de) * 2019-08-16 2021-02-18 Messer Group Gmbh Vorrichtung und Verfahren zum Dosieren von Kohlendioxidschnee
WO2021032377A1 (de) 2019-08-16 2021-02-25 Messer Group Gmbh Vorrichtung zum dosieren von kohlendioxidschnee
CN111229334A (zh) * 2020-03-30 2020-06-05 中国科学院西北生态环境资源研究院 一种研究储雪大小和形状对储雪效果影响的实验装置
CN111229334B (zh) * 2020-03-30 2021-10-15 中国科学院西北生态环境资源研究院 一种研究储雪大小和形状对储雪效果影响的实验装置

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