EP1110043A1 - Method and device for cooling a container - Google Patents
Method and device for cooling a containerInfo
- Publication number
- EP1110043A1 EP1110043A1 EP99941617A EP99941617A EP1110043A1 EP 1110043 A1 EP1110043 A1 EP 1110043A1 EP 99941617 A EP99941617 A EP 99941617A EP 99941617 A EP99941617 A EP 99941617A EP 1110043 A1 EP1110043 A1 EP 1110043A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- cooling
- cooling medium
- cold storage
- storage plate
- module
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
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
- F25D3/10—Devices using other cold materials; Devices using cold-storage bodies using liquefied gases, e.g. liquid air
- F25D3/105—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
- F25D3/00—Devices using other cold materials; Devices using cold-storage bodies
- F25D3/02—Devices using other cold materials; Devices using cold-storage bodies using ice, e.g. ice-boxes
- F25D3/06—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
- F25D9/00—Devices not associated with refrigerating machinery and not covered by groups F25D1/00 - F25D7/00; Combinations of devices covered by two or more of the groups F25D1/00 - F25D7/00
-
- 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
- F25D2303/0822—Details of the element
-
- 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
-
- 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
- F25D2331/00—Details or arrangements of other cooling or freezing apparatus not provided for in other groups of this subclass
- F25D2331/80—Type of cooled receptacles
- F25D2331/804—Boxes
Definitions
- the invention relates to a device and a method for cooling an insulating container and to the use thereof.
- Cooled containers are therefore used for the transport and storage of perishable goods, especially food.
- a drawer is used to hold dry ice, which is arranged in an insulating container provided for the transport of food and beverages in passenger aviation.
- Liquid nitrogen is used to cool insulated containers.
- the liquid nitrogen stored in a vacuum-insulated container under a refrigerated vehicle is sprayed in gaseous form in the cargo area, where it extracts heat energy from the cargo area air in order to cool the temperature-sensitive substances in it (Gas A Communication, issue 51, page 8, Messer Griesheim GmbH, 1996).
- Cold storage plates which are filled with a liquid, a so-called “eutectic liquid” or cooling brine, are also used for cooling purposes used. In the following these liquids are called “eutectic liquid”.
- eutectic liquid By cooling, the eutectic liquid in the cold storage plate freezes and can store the cold. Due to the consumption of latent heat of fusion during the melting process of the frozen eutectic liquid, heat is extracted from the surroundings and the surroundings cool down. The maximum effectiveness of the cold storage plate is given when the eutectic liquid is completely frozen.
- the freezing temperature should be at least 5 ° C below the melting temperature of the eutectic liquid.
- a cold storage plate with a freezing temperature of -21 ° C should be cooled to at least -26 ° C.
- the term "cold storage plate” here encompasses all containers with solid or flexible walls, for example also foil bags which have a cavity for receiving the frozen or solid liquid.
- Cooling modules with cryogenic liquid or snow-shaped carbon dioxide or cryogenic liquid nitrogen as cooling media can only be used for special insulated containers and, due to the relatively low temperatures of these cooling media, can negatively influence or damage the goods to be cooled, especially if they come into direct contact with the goods to be cooled.
- Cold storage plates have only a relatively low and often inadequate cooling capacity. Dry ice also has a relatively low cooling capacity and is also relatively expensive.
- the known cooling systems have so far not been flexible enough, which means that the cooling capacity cannot be adapted in order to cool frozen goods on the one hand and fresh service goods on the other hand with one system.
- the existing insulated containers cannot be used optimally.
- the object of the invention is therefore to provide a device and a method for cooling an insulated container, with which optimally adapted cooling capacities can also be guaranteed for different cooling tasks.
- the object is achieved according to the invention by a device which is assigned at least one cooling module which contains a first cooling medium and is designed such that a cooling effect is achieved by releasing the first cooling medium from the cooling module in its surroundings, and which is also assigned at least one cold storage plate is which contains a second cooling medium and is designed such that a cooling effect of the second cooling medium is achieved by a change in state of the second cooling medium, the second cooling medium remaining in the cold storage plate and not being released in the vicinity thereof.
- insulating container is to be understood as all conceivable types of at least partially closed containers, for example containers, cupboards, trolleys or trolleys, which generally have a thermally insulating wall and in which temperature-sensitive products while maintaining a certain temperature can be stored or transported for a certain period of time.
- the device according to the invention has the advantage that part of the cooling capacity of the first cooling medium can initially be absorbed by the second cooling medium. This advantageously avoids initial hypothermia of the material to be cooled. The cold of the second cooling medium is released again later, which significantly extends the cooling time. The second cooling medium thus acts as a cold buffer and cold storage.
- a cooling module is designed such that a cooling effect of a first cooling medium is achieved by an evaporating cryogenic liquefied, supercritical or solid gas
- a cold storage plate is designed such that a cooling effect of a second cooling medium is achieved by a heat-consuming melting process of a solid substance or mixture of substances.
- evaporating cryogenic liquefied, supercritical or solid gas here means a substance which is present as a gas at normal room temperature (approx. 23 ° C.) and at normal pressure (approx. 1 bar)
- solid also including a lumpy, granular or snow-like form.
- At least one cooling module and at least one cold storage plate are arranged adjacent.
- the cooling module and / or the cold storage plate are arranged within the thermally insulating walls of the insulating container.
- Cold storage plate is arranged adjacent, the arrangement preferably being such that at least part of the emitted cold is led directly from the cooling module to the cold storage plate.
- the cooling module has an opening which is arranged or designed such that the essentially gaseous first cooling medium escaping from the opening is fed to at least one correspondingly arranged cold storage plate.
- the second cooling medium is advantageously cooled with the aid of the gaseous first cooling medium and, if necessary, the wall of the insulating container is cooled before the first cooling medium reaches the atmosphere in the interior of the insulating container, which directly surrounds the material to be cooled.
- the cooling module has an opening on the top.
- the cold storage plate is arranged below the cooling module in the insulating container.
- the box storage plate thus advantageously acts as a buffer against excessive cooling effects on the underside of the cooling module.
- the cooling module is made of stainless steel, particularly preferably of RVS 304.
- liquid nitrogen or liquid or solid carbon dioxide is used as the first cooling medium.
- solid carbon dioxide is understood here to mean carbon dioxide in granular, lumpy or snow-like, but preferably snow-like, form.
- the eutectic liquid has a freezing temperature of 0 to -40 ° C, particularly preferably of about -2 to -4 ° C.
- the cold storage plate (s) can be removed from the insulating container, so that it can be easily replaced, and it is also provided according to the invention that the cooling module can also be removed from the insulating container for certain applications, for example deep-freeze transport, and can also be replaced easily can be.
- the height of the cooling module is 50 to 200 mm, preferably 60 to 100 mm.
- the thermal insulation of the cooling module is preferably vacuum insulation.
- the vacuum of this vacuum insulation is preferably less than 20 mbar, particularly preferably 0.01 to 1 mbar.
- a gas filling of the interior with carbon dioxide or argon can be used at the vacuum pressure mentioned.
- the cooling module is fed to the cooling module with the aid of a filling device, which is assigned a device for controlling the filling quantity, which has a shut-off device and a timer that is operatively connected to the shut-off device, with the aid of which the duration of the supply of the first cooling medium in the cooling module is controlled.
- a valve or a slide is used as the shut-off device.
- the cold storage plate (s) releasably connected to the insulating container according to the invention has devices which are in operative connection with corresponding devices of the insulating container and enable insertion into the insulating container, storage in the insulating container and easy removal from the insulating container.
- the intake volume of the cooling module is up to 20,000 g, preferably 500 to 15,000 g, of the first cooling medium.
- Different amounts of the first cooling medium can advantageously be filled into the cooling module.
- the amount of the first cooling medium to be filled is dependent on a large number of parameters, for example depending on the outside temperature, the temperature to be maintained in the insulating container, the initial temperature of the Insulated container, the type of product in the insulated container, the duration of refrigeration, the mode of transport and / or the type and size of the insulated container
- the opening for filling the cooling module with the first cooling medium also serves as an opening for releasing the gaseous first cooling medium formed.
- This opening can advantageously be provided with a flap, which is kept closed by its own mass due to gravity or with the aid of a suitable locking mechanism and can only be opened at a certain pressure inside the cooling module by the gaseous first cooling medium which forms.
- the opening of the cooling module in particular when carbon dioxide is used as the first cooling medium, can be provided with a structure which is essentially only permeable to the gaseous first cooling medium. If granular, lumpy or snow-shaped, solid carbon dioxide is fed to the cooling module, entrained or generated, essentially gaseous carbon dioxide can escape through the opening in the cooling module with the gas-permeable structure, so that essentially the entire amount of solid carbon dioxide supplied remains in the cooling module and is available for cooling purposes.
- the cooling module has a connection piece in order to evacuate the insulating wall of the cooling module or to measure the existing vacuum.
- the essentially vertical wall of the insulating container is formed on the inner surface thereof, for example by a certain lamellar structure of the surface, such that gaseous first cooling medium formed in the upper region of the insulating container falls or flows better into the lower region of the insulating container .
- This can advantageously improve the temperature distribution within the insulating container.
- the object is further achieved by a method in which the insulating container is cooled by at least one cooling module and, if necessary, at least one cold storage plate with the aid of at least two cooling media, the cooling effect of a first cooling medium being released from a cooling module in its environment is achieved, and in which, if necessary, a cooling effect of a second cooling medium in a cold storage plate is achieved by changing its state, the second cooling medium remaining in the cold storage plate and not being released into its surroundings.
- a single insulated container can be used on the one hand by using the cooling module without an additional cold storage plate for deep-freeze purposes and on the other hand can be used in the combination of the cooling module with additional cold storage plate for fresh service purposes.
- the simultaneous use of at least one cooling module and at least one cold storage plate according to the invention is preferably also provided.
- a cooling effect of a first cooling medium is achieved by an evaporating cryogenic liquefied, supercritical or solid gas
- a cooling effect of a second cooling medium is achieved by a heat-consuming melting process of a solid substance or mixture of substances.
- a eutectic liquid is used as the second cooling medium.
- the cooling capacity of the first cooling medium is consumed in order to convert the second cooling medium from an at least partially liquid state to a solid state.
- an amount of 200 to 2000 g, preferably approximately 800 to 1200 g, of the first cooling medium evaporates within one hour.
- an insulated container which has devices for receiving at least one cooling module which contains a first cooling medium and is designed such that a cooling effect is achieved by releasing the first cooling medium from the cooling module in its surroundings, and which has devices to at least one
- the insulated container has appropriate devices in order to apply and carry out the previously described configurations of the device and the method for cooling.
- the method according to the invention, the device and the insulating container are preferably used for cooling food.
- the cooling capacity of the device and method according to the invention can be so high that, for certain applications, it is possible to dispense with the otherwise usual pre-cooling of the insulating container before it is used.
- the device according to the invention and the method are now explained in more detail by way of example with reference to figures (FIGS. 1 and 2).
- FIG. 1 shows an insulated container with a cooling module and a cold storage plate.
- FIG. 2 shows a section of an insulated container with a cooling module and a cold storage plate.
- the insulating container 1 shown in FIG. 1 has a thermally insulating wall 2.
- a cooling module 3 and a cold storage plate 4 are arranged within the insulating container 1.
- the cooling module 3 has a double wall made of stainless steel, the space between which is evacuated.
- FIG. 2 shows an advantageous arrangement of the cooling module 3 and the cold storage plate 4 in the insulating container 1.
- a cold storage plate 4 is arranged in the upper area within the insulating container 1 with a thermally insulating wall 2, and a cooling module 3 is arranged below the cold storage plate 4.
- the cooling module 3 has an opening 8 on its upper side (hatched area in FIG. 2), as a result of which escaping gaseous first cooling medium essentially reaches the cold storage plate 4 first in order to cool it.
- Part of the cooling capacity of the first cooling medium is thus initially absorbed by the second cooling medium, so that when the cooling module 3 is filled with the first cooling medium, an initial subcooling of the goods to be cooled can be avoided.
- the second cooling medium is released again, as a result of which the entire cooling time is significantly extended.
- the second cooling medium thus advantageously acts as a cold buffer and cold storage.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Supplying Of Containers To The Packaging Station (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19840262A DE19840262A1 (en) | 1998-09-03 | 1998-09-03 | Device and method for cooling a container |
DE19840262 | 1998-09-03 | ||
PCT/EP1999/005961 WO2000014462A1 (en) | 1998-09-03 | 1999-08-13 | Method and device for cooling a container |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1110043A1 true EP1110043A1 (en) | 2001-06-27 |
EP1110043B1 EP1110043B1 (en) | 2004-11-03 |
Family
ID=7879736
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP99941617A Expired - Lifetime EP1110043B1 (en) | 1998-09-03 | 1999-08-13 | Method and device for cooling a container |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP1110043B1 (en) |
AT (1) | ATE281639T1 (en) |
DE (2) | DE19840262A1 (en) |
WO (1) | WO2000014462A1 (en) |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10043508A1 (en) * | 2000-09-01 | 2002-03-14 | Linde Gas Ag | Container with a cooling module |
DE10251484A1 (en) * | 2002-11-05 | 2004-05-19 | Linde Ag | Cool container has at least one cooling module with coolant reservoir and hollow volume containing eutectic cooling liquid separated from coolant reservoir by plate, especially metal plate |
EP1431686B1 (en) | 2002-12-19 | 2010-05-19 | Air Liquide Deutschland GmbH | Insulated container |
DE10259553A1 (en) * | 2002-12-19 | 2004-07-15 | Messer Griesheim Gmbh | Insulating container used as a cooling module or cryo-accumulator in a cooling unit for storing or transporting liquefied gas or gas mixtures comprises a hollow chamber surrounded by walls and a thermal insulation having evacuated regions |
DE102013200746A1 (en) * | 2013-01-18 | 2014-07-24 | Blanco Professional Gmbh + Co Kg | Container and method for cooling and / or keeping cool a chilled goods |
DE102014008902A1 (en) * | 2014-06-14 | 2015-12-17 | Gebhardt Transport- Und Lagersysteme Gmbh | Thermosperre for cooling tank |
EP3359889B1 (en) | 2015-10-06 | 2020-08-05 | Cold Chain Technologies, LLC | Thermally insulated shipping system for pallet-sized payload |
EP3450886B1 (en) * | 2017-08-28 | 2021-05-26 | Air Liquide Deutschland GmbH | Cooling device for cooling a storage space of a cooling container and a respective cooling container |
US11608221B2 (en) | 2018-06-15 | 2023-03-21 | Cold Chain Technologies, Llc | Shipping system for storing and/or transporting temperature-sensitive materials |
EP3911582A4 (en) | 2019-01-17 | 2022-10-19 | Cold Chain Technologies, LLC | Thermally insulated shipping system for parcel-sized payload |
IT202100003623A1 (en) * | 2021-02-17 | 2022-08-17 | Mange Srl | METHOD FOR COOLING ACCUMULATORS AND TRANSPORTING PRODUCTS IN A CONTROLLED ENVIRONMENT |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2875595A (en) * | 1957-08-19 | 1959-03-03 | Dole Refrigerating Co | Eutectic blower unit for refrigerating spaces |
US3287925A (en) * | 1963-12-05 | 1966-11-29 | Union Carbide Corp | Intransit liquefied gas refrigeration system |
US3385073A (en) * | 1966-10-06 | 1968-05-28 | Cryo Therm Inc | Refrigeration system for shipping perishable commodities |
DE2731858A1 (en) * | 1977-07-14 | 1979-02-01 | Martin A Dipl Ing Frank | PROCEDURE FOR THE REFRIGERATION OF GOODS IN REFRIGERATED CONTAINERS AND REFRIGERATED CONTAINERS |
DE2929666A1 (en) | 1979-07-21 | 1981-01-22 | Lermer App Gmbh | TRAINING A DRAWER TO RECEIVE DRY ICE |
DE3807879C1 (en) * | 1988-03-10 | 1989-08-31 | Daimler-Benz Aktiengesellschaft, 7000 Stuttgart, De | Cooling device for cooling the interior of a motor vehicle |
FR2631610B1 (en) * | 1988-05-17 | 1990-10-12 | Pascual France Sa | INSULATED PACKAGING FOR THE TRANSPORT OF PERISHABLE FOODSTUFFS WITH REMOVABLE PLATES FILLED WITH REFRIGERANT |
US5275007A (en) * | 1992-07-14 | 1994-01-04 | Minnesota Valley Engineering, Inc. | Cryogenic dewar level sensor and flushing system |
GB9411942D0 (en) * | 1994-06-15 | 1994-08-03 | Boc Group Plc | A portable chilling unit |
GB9613421D0 (en) * | 1996-06-26 | 1996-08-28 | Boc Group Plc | Refrigerated Container |
-
1998
- 1998-09-03 DE DE19840262A patent/DE19840262A1/en not_active Withdrawn
-
1999
- 1999-08-13 EP EP99941617A patent/EP1110043B1/en not_active Expired - Lifetime
- 1999-08-13 DE DE59911008T patent/DE59911008D1/en not_active Expired - Lifetime
- 1999-08-13 WO PCT/EP1999/005961 patent/WO2000014462A1/en active IP Right Grant
- 1999-08-13 AT AT99941617T patent/ATE281639T1/en not_active IP Right Cessation
Non-Patent Citations (1)
Title |
---|
See references of WO0014462A1 * |
Also Published As
Publication number | Publication date |
---|---|
DE59911008D1 (en) | 2004-12-09 |
EP1110043B1 (en) | 2004-11-03 |
ATE281639T1 (en) | 2004-11-15 |
DE19840262A1 (en) | 2000-03-09 |
WO2000014462A1 (en) | 2000-03-16 |
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