EP1558882A1 - Kühlbehälter mit eutektischer platte - Google Patents
Kühlbehälter mit eutektischer platteInfo
- Publication number
- EP1558882A1 EP1558882A1 EP03773699A EP03773699A EP1558882A1 EP 1558882 A1 EP1558882 A1 EP 1558882A1 EP 03773699 A EP03773699 A EP 03773699A EP 03773699 A EP03773699 A EP 03773699A EP 1558882 A1 EP1558882 A1 EP 1558882A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- container
- coolant
- coolant reservoir
- cooling
- reservoir
- 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
- 238000001816 cooling Methods 0.000 title claims abstract description 55
- 230000005496 eutectics Effects 0.000 title claims abstract description 16
- 239000002826 coolant Substances 0.000 claims abstract description 60
- 239000002184 metal Substances 0.000 claims abstract description 7
- 229910052751 metal Inorganic materials 0.000 claims abstract description 7
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 20
- 239000012267 brine Substances 0.000 claims description 15
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 claims description 15
- 239000007788 liquid Substances 0.000 claims description 14
- 229910052757 nitrogen Inorganic materials 0.000 claims description 10
- 239000007789 gas Substances 0.000 claims description 9
- 238000007599 discharging Methods 0.000 claims description 4
- 239000000110 cooling liquid Substances 0.000 abstract 1
- 238000007872 degassing Methods 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 235000013305 food Nutrition 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 230000003139 buffering effect Effects 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 239000003507 refrigerant Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 241000208822 Lactuca Species 0.000 description 1
- 235000003228 Lactuca sativa Nutrition 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 235000015073 liquid stocks Nutrition 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 235000013311 vegetables Nutrition 0.000 description 1
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
- 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
- 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
Definitions
- the invention relates to a container with at least one cooling module, which has a coolant reservoir.
- Cold storage devices for storing and transporting refrigerated goods in which liquefied gases are used as coolants are known. It is customary to introduce the liquid gas into a drawer-like reservoir at the upper end of a container to be cooled. As is known, cold is released to the refrigerated goods in the cold room via the partition wall of the reservoir, and evaporated refrigerant is passed into the cold room for further product cooling.
- it is not well suited for very cold-sensitive items such as fresh lettuce, which are to be cooled in the plus range of degrees Celsius.
- the use of plastic plates is known to alleviate the effects of cold, but their buffering effect is not sufficient for all applications.
- the term cooling is used here and in the following for cooling and keeping cold in the range of plus and minus degrees.
- the present invention has for its object to provide a device for product-friendly cooling and adapted to the needs of the refrigerated goods, which can be operated independently of an energy supply, and is therefore particularly suitable for transporting and storing refrigerated goods.
- the object is achieved in that a cavity separate from the coolant reservoir and containing a eutectic cooling brine is provided adjacent to the coolant reservoir on the side facing a refrigerated goods.
- the eutectic cooling brine has the property of being able to absorb cold and to assume a buffer function when the cold is passed on to the refrigerated goods or when heat is absorbed from the refrigerated goods.
- the buffering effect stems from the property of the cooling brine to go below a certain temperature into the solid state and thus to store cold, to an extent that corresponds at least to the heat of fusion of the resulting solid.
- the refrigerated goods can e.g. B. Fresh products to be kept cool at a certain temperature in the plus range of degrees Celsius.
- cooling the fresh produce there is also the option of cooling the fresh produce. It is also possible to use the invention to transport frozen goods.
- the suitability of the invention for use in fresh or frozen goods results from the possibility of varying both the amount of coolant in the coolant reservoir and the amount of eutectic cooling brine in the cavity. If there is a large amount of coolant in the coolant reservoir, the cooling module provides a greater cooling capacity for cooling the contents of the container. The more eutectic cooling brine is available, the greater the buffer capacity.
- the cavity is preferably separated from the coolant reservoir by a plate.
- a metal plate has proven to be advantageous due to the good thermal conductivity of metal.
- the plate is particularly advantageously made of steel or stainless steel. It is also advantageous to manufacture the entire cooling module from the metals mentioned.
- the underside of the plate particularly preferably has vertical webs. These webs are intended to further improve the heat conduction via the plate between the coolant reservoir and the eutectic cooling brine.
- the vertical webs are preferably so high that they are immersed in the eutectic cooling brine in the cavity.
- the coolant reservoir expediently contains a liquid gas, in particular liquid nitrogen, as the coolant.
- a liquid gas in particular liquid nitrogen
- the use of liquid nitrogen enables a high cooling capacity of the cooling module with comparatively small dimensions of the cooling module. This advantageously leaves a large part of the container free for goods to be cooled. Furthermore, liquid nitrogen is particularly suitable for use in the food sector.
- the cooling module is expediently attached to the container in a removable manner. This configuration offers advantages with regard to problem-free cleaning of the container and with regard to the maintenance of the cooling module. It is also expedient to provide a means for filling the coolant reservoir with liquid coolant and a means for removing evaporated coolant from the coolant reservoir. The vaporized coolant is advantageously discharged out of the coolant reservoir and into the space containing the goods to be cooled. This enables a very effective use of the coolant and almost completely uses its ability to absorb heat.
- a means for guiding the cold gas flow is available when the evaporated coolant is removed from the coolant reservoir.
- This means is designed, for example, as a baffle part against which the evaporated coolant flowing out of the coolant reservoir bounces and is thereby diverted.
- a baffle part is attached prematurely so that, for. B. prevents the stream of evaporated coolant from striking the container wall. This prevents embrittlement of the container wall, which is made of plastic, for example.
- a means for discharging evaporated coolant directly from the coolant reservoir into the surroundings of the container is provided.
- the evaporated coolant does not come into contact with the refrigerated goods in the container, but is advantageously immediately discharged to the outside from the coolant reservoir. It can be directed to a coolant vapor collector or released into the environment.
- This configuration has the advantage that the invention in this form is also suitable for very sensitive refrigerated goods which cannot tolerate contact with the evaporated coolant and which, for example, prefers an air atmosphere. Fruits are to be mentioned as an example of such a product, which should still ripen in a container according to the invention during transport.
- the container according to the invention enables very good heat transfer and uniform temperature distribution, as well as efficient use of the cooling capacity provided.
- a buffer effect is achieved which, on the one hand, reduces the consumption of liquid coolant, e.g. B. liquid stock, lowers and on the other hand protects fresh goods in the plus range of degrees Celsius against freezing.
- liquid coolant e.g. B. liquid stock
- the device according to the invention is also outstandingly suitable for transport cooling. It is to be operated independently of a permanent energy supply in the cold keeping phase.
- the construction of the device from a few components is simple and robust, which meets the requirements for a transport container with regard to transport weight and durability.
- FIG. 1 shows a cross section A-A through an inventive cooling module
- Figure 2 is a plan view of an inventive cooling module
- Figure 3 shows a cross section B-B through a cooling module according to the invention
- Figure 4 shows a container according to the invention with a cooling module
- the plate 10 is preferably made of metal, e.g. B. steel or stainless steel, which enables good heat transfer between the coolant (z. B. liquid nitrogen) and the eutectic cooling brine. The heat transfer mainly takes place through direct heat conduction via the metal.
- the entire cooling module is particularly advantageously made of steel.
- means 5 filling the coolant reservoir 3 with liquid nitrogen and means 6 (degassing opening 6) for discharging evaporated nitrogen from the coolant reservoir 3 are provided in FIG.
- the derived nitrogen impinges against the means 12 for guiding the cold gas flow, which in this example is designed as a cap 12, which is not firmly connected to the degassing opening 6, but is spaced from the degassing opening when the gaseous nitrogen flows out (cf. Figure 1 and Figure 2), whereby an outflow while changing the flow direction is made possible. This prevents the gas flow from hitting the inside of the upper wall 1 a of the container 1.
- the container 1 is shown schematically as a whole in FIG. 4.
- a vacuum pump can be connected to the pump nozzle 7, also shown in FIG. 1, which creates a vacuum in the intermediate space 13, as a result of which the coolant reservoir 3 is thermally insulated.
- a filling device 14 for filling the cavity 4 with eutectic cooling brine is shown.
- FIG. 2 shows a top view of the cooling module 3, in which the filling nozzle 5, the degassing opening 6 with the cap 12, the pump nozzle 7 and the filling device 14 are also shown.
- FIG. 3 shows a cross section through the cooling module 3, which is created by a vertical sectional plane that is perpendicular to the sectional plane of the cross section from FIG. 1.
- vertical webs 11 are shown in FIG. The vertical webs 1 improve the heat transfer from the coolant reservoir via the plate 10 to the eutectic cooling brine, which is located in the cavity 4.
- FIG. 4 shows a container 1 with a cooling module 2 as shown in FIGS. 1 to 3 and, moreover, a space 15 for receiving a cooling good 8 to be kept at a specific temperature.
- the container 1 is preferably a thermal container 1 trained, which means that it is equipped with thermal insulation and is usually made of plastic materials.
- the space 15 for the refrigerated goods 8 is arranged with particular advantage in the lower region of the container 1, while the cooling module 2 is preferably arranged in the upper region of the container 1. This ensures a good distribution of the cold emitted by the cooling module 2 Inside the container 1 reached.
- an advantageous insulation 9 of the outer walls of the container 1 is shown.
- FIG. 4 shows two guide rails 16 on the inner surfaces of the side walls of a container 1, on which the cooling module 2 . removably attached in the container 1.
- a container 1 designed according to the invention can be used for transport cooling of sensitive refrigerated goods, eg. B. sensitive foods such as fresh vegetables, proves particularly suitable.
- cooling module includes a coolant reservoir and a cavity for receiving cooling brine as one component. This advantageously simplifies the handling of the cooling module.
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)
- Table Devices Or Equipment (AREA)
- Packages (AREA)
- Cooling Or The Like Of Semiconductors Or Solid State Devices (AREA)
Description
Claims
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10251484 | 2002-11-05 | ||
| DE10251484A DE10251484A1 (de) | 2002-11-05 | 2002-11-05 | Kühlbehälter mit eutektischer Platte |
| PCT/EP2003/012260 WO2004042298A1 (de) | 2002-11-05 | 2003-11-03 | Kühlbehälter mit eutektischer platte |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1558882A1 true EP1558882A1 (de) | 2005-08-03 |
| EP1558882B1 EP1558882B1 (de) | 2009-12-30 |
Family
ID=32115242
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP03773699A Expired - Lifetime EP1558882B1 (de) | 2002-11-05 | 2003-11-03 | Kühlbehälter mit eutektischer platte |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP1558882B1 (de) |
| AT (1) | ATE453843T1 (de) |
| AU (1) | AU2003282083A1 (de) |
| DE (2) | DE10251484A1 (de) |
| WO (1) | WO2004042298A1 (de) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102013200746A1 (de) * | 2013-01-18 | 2014-07-24 | Blanco Professional Gmbh + Co Kg | Behälter und Verfahren zum Kühlen und/oder Kühlhalten eines Kühlguts |
| DE102014008902A1 (de) * | 2014-06-14 | 2015-12-17 | Gebhardt Transport- Und Lagersysteme Gmbh | Thermosperre für Kühlbehälter |
| EP3450886B1 (de) * | 2017-08-28 | 2021-05-26 | Air Liquide Deutschland GmbH | Kühlvorrichtung zum kühlen eines laderaums eines kühlbehälters und entsprechender kühlbehälter |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1921147A (en) * | 1929-07-13 | 1933-08-08 | William F Baird | Method of and means for controlling low temperature refrigerants |
| US1897095A (en) * | 1930-10-28 | 1933-02-14 | John H Wooll | Refrigerator box and system of refrigeration |
| US2909039A (en) * | 1957-08-22 | 1959-10-20 | R C Pratt | Liquefied gas refrigeration system |
| US3339374A (en) * | 1965-04-05 | 1967-09-05 | Aerojet General Co | Evaporative non-mechanical heatsink refrigeration system |
| US3385073A (en) * | 1966-10-06 | 1968-05-28 | Cryo Therm Inc | Refrigeration system for shipping perishable commodities |
| US4976112A (en) * | 1990-01-12 | 1990-12-11 | Roberts Mason R | Cold storage cabinet using liquified gas |
| DE19840262A1 (de) * | 1998-09-03 | 2000-03-09 | Messer Griesheim Gmbh | Vorrichtung und Verfahren zum Kühlen eines Behälters |
-
2002
- 2002-11-05 DE DE10251484A patent/DE10251484A1/de not_active Withdrawn
-
2003
- 2003-11-03 AT AT03773699T patent/ATE453843T1/de active
- 2003-11-03 DE DE50312300T patent/DE50312300D1/de not_active Expired - Lifetime
- 2003-11-03 WO PCT/EP2003/012260 patent/WO2004042298A1/de not_active Ceased
- 2003-11-03 AU AU2003282083A patent/AU2003282083A1/en not_active Abandoned
- 2003-11-03 EP EP03773699A patent/EP1558882B1/de not_active Expired - Lifetime
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2004042298A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| DE10251484A1 (de) | 2004-05-19 |
| WO2004042298A1 (de) | 2004-05-21 |
| ATE453843T1 (de) | 2010-01-15 |
| DE50312300D1 (de) | 2010-02-11 |
| AU2003282083A1 (en) | 2004-06-07 |
| EP1558882B1 (de) | 2009-12-30 |
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