EP0745816B1 - Anlage zur Aufrechterhaltung einer niedrigen Temperatur in einem beweglichen Raum - Google Patents

Anlage zur Aufrechterhaltung einer niedrigen Temperatur in einem beweglichen Raum Download PDF

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Publication number
EP0745816B1
EP0745816B1 EP19960401136 EP96401136A EP0745816B1 EP 0745816 B1 EP0745816 B1 EP 0745816B1 EP 19960401136 EP19960401136 EP 19960401136 EP 96401136 A EP96401136 A EP 96401136A EP 0745816 B1 EP0745816 B1 EP 0745816B1
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EP
European Patent Office
Prior art keywords
container
dry ice
ice
dry
enclosure
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.)
Expired - Lifetime
Application number
EP19960401136
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English (en)
French (fr)
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EP0745816A1 (de
Inventor
Claude Gibot
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.)
Carboxyque Francaise SA
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Carboxyque Francaise SA
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Publication date
Application filed by Carboxyque Francaise SA filed Critical Carboxyque Francaise SA
Publication of EP0745816A1 publication Critical patent/EP0745816A1/de
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Publication of EP0745816B1 publication Critical patent/EP0745816B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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

Definitions

  • the present invention relates to maintaining low temperature of a moving enclosure.
  • the invention was developed to solve problems with the carts used to transport food, and in particular prepared meal trays, between a preparation and storage room located in a airport and an airplane and then to be taken aboard this plane, so as not to interrupt the cold chain.
  • the invention is applicable to the solution of analogous problems which may be encountered in others fields, for example in the hospital field.
  • the carriages we just talked about are made up by an enclosure with insulated wall and watertight door, provided with casters. Inside this enclosure, there is a loading volume equipped with means to contain the objects you want to keep cold. These means are usually consisting of a dry ice drawer, located in the upper part of the enclosure. Usually we go out partially this drawer of the trolley, to deposit a number suitable bread or dry ice packs, prepackaged to facilitate handling. It's about of unit plates usually weighing 750 grams. The handling these ice cold loaves, which are very cold, would be an unpleasant task for the staff. It is therefore necessary to pack them, which increases their cost. In furthermore, this operating mode does not allow adapting with accuracy the amount of dry ice, hence a waste which further increases the cost of the operation.
  • the Applicant has proposed, see FR-A-2,706,990, to provide a dry ice bin provided with a lateral opening making it possible to inject liquid CO 2 therein using a distribution means provided with a solenoid valve comprising timing means making it possible to select the duration of injection of liquid CO 2 into the drawer, and consequently the desired quantity of dry ice.
  • the object of the present invention is to remedy these drawbacks, and to provide means for creating and introducing carbon dioxide snow which are further improved.
  • the invention provides an installation for maintaining a mobile enclosure at low temperature, this enclosure comprising a loading volume capable of containing objects which it is desired to carry or maintain at said low temperature and at least one container which may contain dry ice, the installation further comprising a stationary source of liquid CO 2 under pressure and a carbon dioxide snow generator connected to said stationary source by a pipe and capable of spraying the liquid CO 2 into said container in such a way that this liquid CO 2 can be transform into carbon dioxide snow in said container, characterized in that it comprises a fixed loading chamber, which is equipped with said generator, in which the container previously removed from the mobile enclosure can be placed, and that the stationary loading chamber is further equipped with means capable of packing into the container dry ice formed by said generator and which has fallen into this container.
  • the invention combines the advantages of the two techniques previous: the fact that we use a container that is not not fixed relative to the enclosure allows, as for the technique using ice blocks, effective control the quantity of refrigerants introduced into the enclosure.
  • the advantages of the technique including carbon dioxide snow formation know a possibility of precise dosage of the quantity refrigerated refrigerants, and handling relatively easy for the staff.
  • the dry ice Because the dry ice has been packed, it occupies, for an equal cooling capacity, a volume more small than if it did't, which can allow a increase in the useful volume of the enclosure, or, at volume equal useful, an increase in the shelf life of products contained in this enclosure.
  • a second dry ice container is determined by the face internal of the enclosure door and by a sheet, at least partially perforated, parallel to said internal face, and moved away from it a distance small enough not to prevent the door from closing.
  • a free space with a thickness of the order a few millimeters. This container is closed on the sides and bottom, and it's open at the top.
  • a device comprising snow generators carbon dioxide of small dimensions can be introduced less partially in the upper region of the container to form in it an additional amount of dry ice.
  • this arrangement allows the distribution of frigories in a more homogeneous way by interesting more especially the bottom of the enclosure, which is not the case with the refrigerant stored in the upper part of this one.
  • Figure 1 is a schematic perspective view of installation and how to use it.
  • Figure 2 is a vertical section of the post filling.
  • Figure 3 is a vertical section of one of the generators of dry ice from the loading station.
  • Figure 4 is a perspective view illustrating a additional element of the installation of FIG. 1, and how to use it.
  • Figure 5 is a section along line V-V of the figure 4 of the dry ice generator shown on this figure.
  • FIGS 1 and 4 show a carriage for refrigerated transport of meal trays prepared in advance.
  • a cart known to tradespeople as “trolley”
  • Trolley 1 includes a rectangular box provided with casters and which has walls, a bottom and a wall superior in insulating material.
  • Trolley 1 is also fitted with a door 2, also made of insulating material, mounted on a vertical hinge and extending practically over full height of the cart.
  • Housings 3 are designed to allow the free movement of the air from top to bottom of the interior space of the carriage 1.
  • the upper housing 4 is somewhat different from the others, because it includes a container 5 for dry ice.
  • the carbon dioxide snow tank 5 is completely removable from its housing 4, as shown in Figure 1. It is provided a handle 6 of insulating material intended to facilitate its gripping.
  • Figure 1 also shows a carbon dioxide snow loading station, consisting of a box 7, with an insulating wall.
  • the interior space of this box is divided, as shown in FIG. 2, into an upper compartment 8 and a lower compartment 10.
  • the upper compartment 8 comprises at its base means 9 which constitute a separation allowing the passage of gases to the lower compartment 10.
  • the separation means 9 are also designed to receive a dry ice bin 5, introduced into the box 7 through a slot 11, visible in FIG. 1.
  • the insulating handle 6 closes the slot 11 when a dry ice bin is in place in the compartment 8 of the box 7.
  • dry ice generators 12 are provided, distributed evenly above the surface of the tank 5. Three of them are visible in Figure 2 and Figure 3 shows a section through one of them.
  • Each generator consists of a vertical tube 13 open at the bottom and closed at its upper part by a partition 14 traversed by a nozzle 15 capable of spraying liquid CO 2 inside the tube 13.
  • the nozzle 15 is connected by the '' through an individual stop valve 16 to a manifold 17, itself connected to a pipe 18 for supplying liquid CO 2 via a thermally insulated pipe 19 provided with a stop valve 20 Line 18 supplies liquid CO 2 at -20 ° C, under a pressure of 20 bars.
  • the generator 12 produces carbon dioxide snow which falls into the tank 5.
  • the individual valves 16 make it possible to obtain a substantially uniform distribution of the amount of snow on the bottom surface of the tank 5.
  • the shut-off valve 20 can be controlled by computer according to the data of the problem: number of meal trays, duration of the flight, ambient temperature, etc.
  • the lower compartment 10 of the carbon dioxide snow filling station is used only for collecting the cold gases produced during the formation of carbon dioxide snow.
  • a pump 21 is used for the evacuation of these gases formed mainly of gaseous CO 2 .
  • Compartment 8 in addition to the snow generators and the location of bin 5, contains a panel of tamping 22 mounted on a horizontal articulation 23 located along one of the walls of the box 7, which can be actuated by a jack 24 so as to pass from a position vertical, shown in solid lines in Figure 2, where it does not prevent the carbon dioxide snow produced by generators 12 to reach the tank 5, and a horizontal position, where it covers substantially the entire surface of bin 5 and cup the snow it can contain, under the effect of the force of the jack 24. It is understood that, each time that the jack 24 is actuated, the snow is packed. It is possible, depending on the circumstances, to operate multiple cylinder 24 until the desired settlement is obtained.
  • the force of the jack is calculated so that the tamping panel 22 does not allow the surface carbon dioxide snow, when compacted, exceeds the level of the edges of the tank 5. This would make the extraction of the tray 5 filled difficult, and some of the dry ice would be retained by slot 11 and would remain in pure loss in box 7.
  • the panel 22 has a thick plate of material such that a foam having an elasticity suitable for low temperature where it is used.
  • FIG. 1 there is also shown, schematically, an external carbon dioxide snow generator 30, connected to the box 7 by a liquid CO 2 supply duct 31.
  • This external generator is shown in more detail in FIGS. 4 and 5, which correspond to a complementary method of the invention.
  • the generator 30 is used. It is formed of a front plate 34 made of insulating material, and a rear plate 35, also made of insulating material. Dry ice generators are mounted on the back plate 35, and held in position in grooves provided in the front and back plates.
  • each generator 36 consists of a stainless steel tube of small diameter, for example 4 mm inside diameter, open at the bottom, and in which opens out a capillary 37 connected to a collecting chamber 38, itself connected to the supply line 31, which is flexible, and provided with a solenoid valve 39 and a stop valve 40.
  • the structure of the dry ice generators 36 is thus quite similar to that of the dry ice generators 12 described above but with much smaller dimensions.
  • the generator 30 is introduced, carrying it by handles 41, 42, of insulating material, in the space between the door 2 and the plate 32.
  • a holding part 43 fixed on the face of the rear plate 35 which is opposite to the generators 36, comes to rest on the upper edge of the door 2, to keep the generator 30 in a suitable position. It then suffices to open the valves 39 and 40 to fill the space between the door 2 and the plate 32 with a quantity of carbon dioxide snow which, despite the small size of the generators, is not negligible, because it can reach, in practice, up to 900 grams of dry ice.

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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)
  • Carbon And Carbon Compounds (AREA)
  • Handcart (AREA)

Claims (5)

  1. Anlage zum Halten eines beweglichen Behältnisses auf einer niedrigen Temperatur, wobei das Behältnis (1) einen Laderaum, der Objekte aufnehmen kann, die man auf die niedrige Temperatur bringen oder darauf halten möchte, und mindestens einen Behälter (5), der Trockeneis enthalten kann, aufweist,
       wobei die Anlage des weiteren eine feststehende Quelle druckbeaufschlagten, flüssigen Kohlendioxids und einen Trockeneiserzeuger (12), der über eine Leitung (18) mit der feststehenden Quelle verbunden ist und das flüssige Kohlendioxid in dem Behälter zerstäuben kann, so daß es in dem Behälter in Trockeneis umgewandelt wird, aufweist,
       dadurch gekennzeichnet, daß sie eine feststehende Ladekammer (7) aufweist, die mit dem Erzeuger ausgestattet ist, wobei man in diese Ladekammer den zuvor aus dem beweglichen Behältnis gezogenen Behälter anordnen kann,
       und die feststehende Ladekammer darüber hinaus mit einem Mittel (22) versehen ist, das in dem Behälter das von dem Erzeuger hergestellte und in den Behälter gefallene Trockeneis zusammenpressen kann.
  2. Anlage nach Anspruch 1, dadurch gekennzeichnet, daß das Mittel, das das Trockeneis zusammenpressen kann, eine Druckplatte (22) enthält, die im Innern der Ladekammer (7) zwischen einer ersten Position, in der sie nicht verhindert, daß das Trockeneis in den Behälter fällt, und einer zweiten Position, in der sie eine von oben nach unten gerichtete vertikale Kraft auf das in den Behälter gefallene Trockeneis ausübt, beweglich ist.
  3. Anlage nach Anspruch 2, dadurch gekennzeichnet, daß die Druckplatte (22) ein bei der Temperatur zur Erzeugung des Trockeneises zusammendrückbares und elastisches Material umfaßt.
  4. Anlage nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß des weiteren vorgesehen ist, daß ein zweiter Trockeneisbehälter durch die Innenfläche einer Tür (2) des Behältnisses (1) und durch ein Blech (32), das zumindest teilweise perforiert ist, sich parallel zu der Innenfläche erstreckt und in einem Abstand davon angeordnet ist, der so gering ist, daß es das Schließen der Tür nicht behindert, bestimmt wird, und daß ebenfalls eine Vorrichtung (30) mit Trockeneiserzeugern (36) vorhanden ist, die so bemessen sind, daß sie zumindest teilweise in den oberen Bereich des Behälters eingeführt werden können, um in diesem eine zusätzliche Trockeneismenge zu bilden.
  5. Anlage nach Anspruch 4, dadurch gekennzeichnet, daß die Vorrichtung (30) mit den Erzeugern aus zwei übereinander angeordneten Platten (34, 35) aus Isoliermaterial besteht, die dazwischen Trockeneiserzeuger festhalten, wobei die Dicke der Anordnung so gering ist, daß sie zumindest teilweise in den freien Raum eindringen kann.
EP19960401136 1995-05-30 1996-05-24 Anlage zur Aufrechterhaltung einer niedrigen Temperatur in einem beweglichen Raum Expired - Lifetime EP0745816B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9506351 1995-05-30
FR9506351A FR2734894B1 (fr) 1995-05-30 1995-05-30 Installation pour le maintien a basse temperature d'une enceinte mobile

Publications (2)

Publication Number Publication Date
EP0745816A1 EP0745816A1 (de) 1996-12-04
EP0745816B1 true EP0745816B1 (de) 1999-09-29

Family

ID=9479462

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19960401136 Expired - Lifetime EP0745816B1 (de) 1995-05-30 1996-05-24 Anlage zur Aufrechterhaltung einer niedrigen Temperatur in einem beweglichen Raum

Country Status (5)

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EP (1) EP0745816B1 (de)
CA (1) CA2177727A1 (de)
DE (1) DE69604446T2 (de)
ES (1) ES2140797T3 (de)
FR (1) FR2734894B1 (de)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2760826B1 (fr) 1997-03-11 1999-04-23 Carboxyque Francaise Chariot refrigere et installation de rechargement en agent refrigerant
FR2761144B1 (fr) * 1997-03-24 1999-05-21 Hydrogas France Sa Dispositif de transport de produits frais et procede de production et de transfert de glace carbonique ou neige comprimee dans le dispositif
DE19808267A1 (de) * 1998-02-27 1999-09-02 Messer France Sa Befüll- und Entnahmemodul für ein Kühlmodul und Verfahren zum Befüllen eines Kühlmoduls
EP0964214A1 (de) * 1998-06-11 1999-12-15 Colpo Company Limited Kompakte Kühlanlage für Behälter und Verfahren zur Bewahrung von Kälte
KR101698080B1 (ko) 2009-09-14 2017-02-01 엘지전자 주식회사 제빙기를 갖는 이동식 냉장고
FI20106098A0 (fi) * 2010-10-25 2010-10-25 Jarmo Aurekoski Lentokoneen tarjoiluvaunun jäähdytysratkaisu
EP2873937A1 (de) 2013-11-13 2015-05-20 ACP Belgium N.V. Lagersystem für Produktlagerung und Transport bei niedrigen Temperaturen
EP3653976B1 (de) 2018-11-16 2021-06-30 Neopost Technologies Schliessfachanlage zur zustellung von wärmeempfindlichen produkten
DE102023104626A1 (de) * 2023-02-24 2024-08-29 KNAPP Nano Warehousing Beteiligungs GmbH Lagersystem sowie Verfahren zu dessen Betrieb
DE102023104627A1 (de) * 2023-02-24 2024-08-29 Viessmann Refrigeration Solutions Gmbh Lager- und Transportvorrichtung, Temperiersystem mit einer derartigen Lager- und Transportvorrichtung sowie Verwendung
DE102023104628A1 (de) * 2023-02-24 2024-08-29 Viessmann Refrigeration Solutions Gmbh Regenerationsmagazin zur aktiven Regeneration von entladenen Temperierelementen
DE102023104630A1 (de) * 2023-02-24 2024-08-29 Viessmann Refrigeration Solutions Gmbh Temperiersystem und Verfahren zu dessen Steuerung
DE102023104629A1 (de) * 2023-02-24 2024-08-29 Viessmann Refrigeration Solutions Gmbh Regenerationsmagazin zur aktiven Regeneration von entladenen Temperierelementen

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2316423A (en) * 1939-06-23 1943-04-13 Leo M Harvey Device for providing refrigerants in containers
FR2178437A5 (de) * 1972-03-31 1973-11-09 Air France
US3992069A (en) * 1975-06-23 1976-11-16 Gary Kitterman Food tray carrier
DE2634164A1 (de) * 1976-07-29 1978-02-09 Buse Kohlensaeure Vorrichtung zum beschneien von gegenstaenden mit kohlensaeureschnee
JPS5750249Y2 (de) * 1979-07-31 1982-11-04
DE2964173D1 (en) * 1979-11-28 1983-01-05 Iwatani & Co Apparatus for producing dry ice from liquid carbon dioxide
FR2534130B1 (fr) * 1982-10-08 1986-10-17 Beizermann Michel Chariot de stockage des repas avant rechauffage et moyens de mise en oeuvre
FR2706990B1 (de) * 1993-06-23 1995-08-04 Carboxyque Francaise

Also Published As

Publication number Publication date
DE69604446T2 (de) 2000-05-18
CA2177727A1 (fr) 1996-12-01
EP0745816A1 (de) 1996-12-04
DE69604446D1 (de) 1999-11-04
ES2140797T3 (es) 2000-03-01
FR2734894A1 (fr) 1996-12-06
FR2734894B1 (fr) 1997-07-25

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