EP1880150B1 - Apparatus for maintaining the temperature of food - Google Patents
Apparatus for maintaining the temperature of food Download PDFInfo
- Publication number
- EP1880150B1 EP1880150B1 EP06753532A EP06753532A EP1880150B1 EP 1880150 B1 EP1880150 B1 EP 1880150B1 EP 06753532 A EP06753532 A EP 06753532A EP 06753532 A EP06753532 A EP 06753532A EP 1880150 B1 EP1880150 B1 EP 1880150B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- coolant
- food
- cooling module
- food container
- wall
- 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.)
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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
- 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 device for maintaining the temperature of refrigerated foodstuffs with a food container for holding the foodstuffs and a cooling module which can be charged with a coolant according to the preamble of claim 1.
- Such a device is off DE-A-19743131 known.
- thermocontainer system which allows a temperature maintenance of the food using carbon dioxide snow.
- a cooling module is installed in a food container into which liquid carbon dioxide can be introduced.
- carbon dioxide snow is produced, which is created by sublimation of carbon dioxide snow cold gas.
- the cooling module consists of an inner and outer chamber, wherein the outer chamber has perforated layers that allow a transition of cold gas into the food container.
- the cooling module is arranged in the upper region of the food container, so that the cold gas in the food container sinks down and cools the food therein.
- the present invention has for its object, a device of the type mentioned in such a way that the most uniform possible supply of the food container with coolant is achieved in an economical manner.
- the cooling module is filled with the coolant, in particular liquid carbon dioxide.
- the cooling module is expediently designed such that cold gas arising after the filling process, in particular carbon dioxide gas generated by sublimation of carbon dioxide snow, is stored.
- the coolant, in particular the cold gas flows into the cavity of the wall of the food container and can be dispensed selectively and metered through the openings in the wall into the interior of the food container.
- the invention can be used in food transport vehicles, which consist of several separate chambers. Usually trays are placed with food in each chamber, which must be kept cold. So far, such tray cars are cooled in a cold air device, the cooling capacity is not always sufficient.
- an economical solution is provided with the invention, can be dispensed with a conventional refrigeration system, which would be expensive to install on the tray car.
- the preferably installed in the food container cooling module acts as a cold reservoir, with a cold transition takes place in the partitions and / or outer walls of the food container.
- the coolant can be dispensed directly and metered from the cavities of the partitions or outer walls via openings directly into the food container.
- the partitions preferably have openings on both sides in order to be able to supply the chambers uniformly with coolant. If the walls have holders for food trays, the openings are preferably provided above the holders. As a result, the introduction of the cold gas above the food, whereby a uniform heat transfer is ensured.
- a coolant supply is expediently connectable to the cooling module, which has a line for liquefied gas, which is in communication with a liquid gas reservoir.
- the liquid gas reservoir is designed as a liquid gas container for carbon dioxide.
- a nozzle / baffle plate system is advantageously provided in the cooling module, flows through the coolant when connected coolant supply, wherein coolant snow and coolant vapor arise.
- the cold gas produced during the filling process can be used as partial flow for pre-cooling the food container.
- the main advantage of the invention is, above all, a uniform distribution of cold in the interior of the food container.
- the invention represents a significant improvement over conventional solutions.
- the use of a device, as described in the DE 199 19 934 A1 is described, is problematic in such food containers. Since in the solution proposed there, the cold simply falls from the installed in the upper part of the food container cooling module on the arranged food in the food container, a cooling module would have to be installed in each chamber. With the solution according to the invention, in contrast, a single cooling module is sufficient for the cooling of all chambers. Due to the connection between the cooling module and the cavities of the separating and / or outer walls of the food container and the openings in the separating and / or outer walls, a uniform supply of all chambers with a cooling module is possible.
- the separating and / or outer wall surfaces of the food container are cooled moderately, whereby additional convection cold radiation is generated.
- additional convection cold radiation is generated.
- the in FIG. 1 illustrated food transport vehicle consists of three chambers 1, 2, 3, which are separated by partitions 4, 5 from each other.
- trays not shown in the figure with food can be placed on holders, not shown.
- the food should be kept cold in the food trolley.
- a cooling module 6 is arranged in the upper region of the food transport vehicle, which can be filled via an adapter 7 for a filling gun with liquid carbon dioxide.
- nozzle / baffle plate system is installed, so that when filling the cooling module 6 CO 2 snow in the cooling module 6 is formed.
- the cooling module 6 can thus also be referred to as a snow box.
- CO 2 snow is produced by sublimation of CO 2 cooling gas, which flows via wire cloth 8 and cold gas transitions 9 from the cooling module 6 into the hollow dividing walls 4 and 5. There, the cold gas exits on the sides of the partitions 4 and 5 over a distributed number of holes in the chambers 1, 2 and 3. The exit points are located above the tray heights, ie above the food, so that the heat transfer is evenly distributed in the chambers and tray pads.
- FIG. 2 is shown on the basis of a section of the food transport carriage, which relates to the middle chamber, the principle of cold keeping.
- the cooling module 6 (snow box) is supplied via the adapter 7 with liquid carbon dioxide. After filling with sufficient carbon dioxide snow, the filling gun is removed.
- the carbon dioxide sublimate flows into the cavities of the partitions 4 and 5. About holes in the partitions 4 and 5, the carbon dioxide sublimate can escape into the chambers of the food transport vehicle.
- the flow of the cold gas is shown by arrows 11 and 12.
- brackets are provided for dining trays. These brackets can be designed for example as beads in the partitions 4 and 5.
- the holes for the exit of the cold gas are each provided above the brackets 10.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Thermal Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Engineering & Computer Science (AREA)
- Frying-Pans Or Fryers (AREA)
- Control Of Temperature (AREA)
- Cold Air Circulating Systems And Constructional Details In Refrigerators (AREA)
- Commercial Cooking Devices (AREA)
- Confectionery (AREA)
Abstract
Description
Die Erfindung betrifft eine Vorrichtung zur Temperaturhaltung von gekühlten Lebensmitteln mit einem Lebensmittelbehälter zur Aufnahme der Lebensmittel und einem mit einem Kühlmittel beschickbaren Kühlmodul gemäß Oberbegriff von Anspruch 1.The invention relates to a device for maintaining the temperature of refrigerated foodstuffs with a food container for holding the foodstuffs and a cooling module which can be charged with a coolant according to the preamble of
Eine derartige Vorrichtung ist aus
Zur Erhaltung der Qualität von Lebensmitteln ist es allgemein üblich, diese zu kühlen. Insbesondere bei Lebensmitteltransporten ist darauf zu achten, dass bestimmte Temperaturen nicht überschritten werden. Üblicherweise werden hierfür mit Trockeneis bestückte Container eingesetzt, die allerdings eine Temperaturhaltung nur in engen zeitlichen Grenzen erlauben und darüber hinaus aufgrund der Verfügbarkeit in Blöcken umständlich zu handhaben sind.To maintain the quality of food, it is common practice to cool it. In particular, in the case of food transports, care must be taken that certain temperatures are not exceeded. Usually this container is equipped with dry ice, however, allow a temperature maintenance only within tight time limits and are also cumbersome to handle due to the availability in blocks.
In der
Sofern in dem Lebensmittelbehälter Einbauten, wie z.B. Trennwände, Tabletts, Halterungen etc. vorgesehen sind, ist eine ausreichende Versorgung des gesamten Behälterinhalts mit Kaltgas nicht immer gewährleistet, so dass die Gefahr einer unzureichenden Kühlung bestimmter Bereiche des Behälterinhalts besteht.Insofar as internals such as e.g. Partitions, trays, brackets, etc. are provided, a sufficient supply of the entire contents of the container with cold gas is not always guaranteed, so that there is a risk of insufficient cooling of certain areas of the container contents.
Der vorliegenden Erfindung liegt die Aufgabe zugrunde, eine Vorrichtung der eingangs genannten Art so auszugestalten, dass auf wirtschaftliche Weise eine möglichst gleichmäßige Versorgung des Lebensmittelbehälters mit Kühlmittel erreicht wird.The present invention has for its object, a device of the type mentioned in such a way that the most uniform possible supply of the food container with coolant is achieved in an economical manner.
Diese Aufgabe wird erfindungsgemäß durch die Merkmale von Anspruch 1, gelöst.This object is achieved by the features of
Beim Betrieb der Vorrichtung wird das Kühlmodul mit dem Kühlmittel, insbesondere flüssigem Kohlendioxid, befüllt. Das Kühlmodul ist zweckmäßigerweise so ausgestaltet, dass nach dem Befüllungsvorgang entstehendes Kaltgas, insbesondere durch Sublimation von Kohlendioxidschnee erzeugtes Kohlendioxidgas, gespeichert wird. Das Kühlmittel, insbesondere das Kaltgas, strömt in den Hohlraum der Wand des Lebensmittelbehälters und kann gezielt und dosiert über die Öffnungen in der Wand in den Innenraum des Lebensmittelbehälters abgegeben werden.During operation of the device, the cooling module is filled with the coolant, in particular liquid carbon dioxide. The cooling module is expediently designed such that cold gas arising after the filling process, in particular carbon dioxide gas generated by sublimation of carbon dioxide snow, is stored. The coolant, in particular the cold gas, flows into the cavity of the wall of the food container and can be dispensed selectively and metered through the openings in the wall into the interior of the food container.
Mit besonderem Vorteil kann die Erfindung bei Speisentransportwagen eingesetzt werden, die aus mehreren getrennten Kammern bestehen. Üblicherweise werden in jeder Kammer Tabletts mit Speisen aufgelegt, die kalt gehalten werden müssen. Bislang werden solche Tablettwagen in einer Kaltluftvorrichtung gekühlt, wobei die Kälteleistung nicht immer ausreichend ist. Hier wird mit der Erfindung eine wirtschaftliche Lösung zur Verfügung gestellt, mit der auf eine konventionelle Kälteanlage, welche aufwendig an den Tablettwagen installiert werden müsste, verzichtet werden kann.With particular advantage, the invention can be used in food transport vehicles, which consist of several separate chambers. Usually trays are placed with food in each chamber, which must be kept cold. So far, such tray cars are cooled in a cold air device, the cooling capacity is not always sufficient. Here, an economical solution is provided with the invention, can be dispensed with a conventional refrigeration system, which would be expensive to install on the tray car.
Das vorzugsweise im Lebensmittelbehälter eingebaute Kühlmodul wirkt als Kältereservoir, wobei ein Kälteübergang in die Trennwände und/oder Außenwände des Lebensmittelbehälters stattfindet. Das Kühlmittel kann gezielt und dosiert von den Hohlräumen der Trennwände bzw. Außenwände über Öffnungen direkt in den Lebensmittelbehälter abgegeben werden. Dabei weisen die Trennwände vorzugsweise auf beiden Seiten Öffnungen auf, um die Kammern gleichmäßig mit Kühlmittel versorgen zu können. Sofern die Wände Halterungen für Lebensmitteltabletts aufweisen, sind die Öffnungen bevorzugt oberhalb der Halterungen vorgesehen. Dadurch erfolgt die Einleitung des Kaltgases oberhalb der Speisen, wodurch ein gleichmäßiger Wärmeübergang gewährleistet ist.The preferably installed in the food container cooling module acts as a cold reservoir, with a cold transition takes place in the partitions and / or outer walls of the food container. The coolant can be dispensed directly and metered from the cavities of the partitions or outer walls via openings directly into the food container. The partitions preferably have openings on both sides in order to be able to supply the chambers uniformly with coolant. If the walls have holders for food trays, the openings are preferably provided above the holders. As a result, the introduction of the cold gas above the food, whereby a uniform heat transfer is ensured.
Zur Versorgung des Kühlmoduls mit dem Kühlmittel ist zweckmäßigerweise an das Kühlmodul eine Kühlmittelzuführung anschließbar, die eine Leitung für Flüssiggas aufweist, welche mit einem Flüssiggasreservoir in Verbindung steht. Bevorzugt ist das Flüssiggasreservoir als Flüssiggasbehälter für Kohlendioxid ausgebildet. Außerdem ist vorteilhafterweise im Kühlmodul ein Düse-/Prallplattensystem vorgesehen, durch das bei angeschlossenener Kühlmittelzuführung das Kühlmittel strömt, wobei Kühlmittelschnee und Kühlmitteldampf entstehen. Das beim Befüllvorgang entstehende Kaltgas kann als Teilstrom zur Vorkühlung des Lebensmittelbehälters genutzt werden.To supply the cooling module with the coolant, a coolant supply is expediently connectable to the cooling module, which has a line for liquefied gas, which is in communication with a liquid gas reservoir. Preferably, the liquid gas reservoir is designed as a liquid gas container for carbon dioxide. In addition, a nozzle / baffle plate system is advantageously provided in the cooling module, flows through the coolant when connected coolant supply, wherein coolant snow and coolant vapor arise. The cold gas produced during the filling process can be used as partial flow for pre-cooling the food container.
Der wesentliche Vorteil der Erfindung besteht vor allem in einer gleichmäßigen Kälteverteilung im Innenraum des Lebensmittelbehälters. Insbesondere bei Lebensmittelbehältern mit getrennten Kammern stellt die Erfindung eine deutliche Verbesserung gegenüber herkömmlichen Lösungen dar. Die Verwendung einer Vorrichtung, wie sie in der
Von Vorteil ist bei der erfindungsgemäßen Lösung auch, dass die Trenn- und/oder Außenwandoberflächen des Lebensmittebehälters moderat abgekühlt werden, wodurch zusätzliche Konvektionskältestrahlung erzeugt wird. Beim Einsatz in Tablettwagen ist ebenfalls eine gleichmäßige Kälteverteilung im Innenraum gewährleistet, weil das Kaltgas vorzugsweise zwischen den Tablettauflagen ausströmt.It is also advantageous in the solution according to the invention that the separating and / or outer wall surfaces of the food container are cooled moderately, whereby additional convection cold radiation is generated. When used in tray cars, a uniform distribution of cold in the interior is also ensured because the cold gas preferably flows out between the tray supports.
Im Folgenden soll die Erfindung anhand von in den Figuren schematisch dargestellten Ausführungsbeispielen näher erläutert werden.In the following, the invention will be explained in more detail with reference to embodiments schematically illustrated in the figures.
Es zeigen
Figur 1- einen Speisentransportwagen mit drei Kammern
Figur 2- ein Prinzipschema zur Kühlung einer Kammer eines Speisentransportwagens
- FIG. 1
- a food trolley with three chambers
- FIG. 2
- a schematic diagram for cooling a chamber of a food transport vehicle
Der in
In
Claims (5)
- Device for maintaining the temperature of cooled foodstuffs, with a foodstuff container for receiving the foodstuffs and with a cooling module (6) loadable with a coolant, the cooling module (6) being connected to a cavity in at least one wall (4, 5) of the foodstuff container, and the wall (4, 5) having, on the inside of the foodstuff container, passage orifices from the cavity into the inner space of the foodstuff container for the outflow of coolant into the foodstuff container, characterized in that the foodstuff container is divided by the wall (4, 5) into chambers (1, 2, 3), the cooling module (6) is connected to a cavity in the wall (4, 5), and the wall (4, 5) has on both sides orifices for the outflow of coolant into the chambers (1, 2, 3) of the foodstuff container.
- Device according to Claim 1, characterized in that the wall has mountings for foodstuff trays, and the passage orifices are provided above the mountings.
- Device according to either one of Claims 1 and 2, characterized in that the coolant is connected to cavities in the outer walls of the foodstuff container.
- Device according to one of Claims 1 to 3, characterized in that a coolant feed is connectable to the cooling module (6) and has a line for liquid gas which is connected to a liquid-gas reservoir.
- Device according to one of Claims 1 to 4, characterized in that the cooling module (6) has provided in it a nozzle/baffle-plate system, through which the coolant flows when the coolant feed is connected, coolant snow and coolant vapour being obtained.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102005021533A DE102005021533A1 (en) | 2005-05-10 | 2005-05-10 | Device for maintaining the temperature of food |
PCT/EP2006/004335 WO2006119969A1 (en) | 2005-05-10 | 2006-05-09 | Apparatus for maintaining the temperature of food |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1880150A1 EP1880150A1 (en) | 2008-01-23 |
EP1880150B1 true EP1880150B1 (en) | 2011-01-26 |
Family
ID=36783686
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP06753532A Active EP1880150B1 (en) | 2005-05-10 | 2006-05-09 | Apparatus for maintaining the temperature of food |
Country Status (11)
Country | Link |
---|---|
EP (1) | EP1880150B1 (en) |
CN (1) | CN100557350C (en) |
AT (1) | ATE497136T1 (en) |
AU (1) | AU2006245951B2 (en) |
BR (1) | BRPI0608983A2 (en) |
DE (2) | DE102005021533A1 (en) |
DK (1) | DK1880150T3 (en) |
EC (1) | ECSP077966A (en) |
RU (1) | RU2371644C2 (en) |
UA (1) | UA88375C2 (en) |
WO (1) | WO2006119969A1 (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102011121013A1 (en) * | 2011-12-13 | 2013-06-13 | Linde Aktiengesellschaft | Apparatus and method for maintaining temperature |
CN109745939A (en) * | 2017-11-07 | 2019-05-14 | 丹阳市日晟工业设备有限公司 | A kind of safe and efficient autoclave stirred reactor |
CN110030780A (en) * | 2019-04-03 | 2019-07-19 | 常州大学 | A kind of refrigerated storage case based on carbon dioxide hydrate |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US948275A (en) * | 1908-09-01 | 1910-02-01 | Hugo Gernsback | Electrorheostat-regulator. |
US1948275A (en) * | 1933-01-06 | 1934-02-20 | Miller Benjamin | Refrigerating apparatus |
DE19743131A1 (en) * | 1997-09-30 | 1999-04-08 | Messer Griesheim Gmbh | Device for temperature sensitive goods |
US6205794B1 (en) * | 1999-08-02 | 2001-03-27 | John G. Brothers | Cryogenic storage device |
DE10043508A1 (en) * | 2000-09-01 | 2002-03-14 | Linde Gas Ag | Container with a cooling module |
-
2005
- 2005-05-10 DE DE102005021533A patent/DE102005021533A1/en not_active Withdrawn
-
2006
- 2006-05-09 RU RU2007145526/12A patent/RU2371644C2/en not_active IP Right Cessation
- 2006-05-09 CN CNB2006800158165A patent/CN100557350C/en not_active Expired - Fee Related
- 2006-05-09 DK DK06753532.8T patent/DK1880150T3/en active
- 2006-05-09 UA UAA200713731A patent/UA88375C2/en unknown
- 2006-05-09 AU AU2006245951A patent/AU2006245951B2/en not_active Ceased
- 2006-05-09 WO PCT/EP2006/004335 patent/WO2006119969A1/en active Application Filing
- 2006-05-09 EP EP06753532A patent/EP1880150B1/en active Active
- 2006-05-09 DE DE502006008811T patent/DE502006008811D1/en active Active
- 2006-05-09 BR BRPI0608983-6A patent/BRPI0608983A2/en not_active IP Right Cessation
- 2006-05-09 AT AT06753532T patent/ATE497136T1/en active
-
2007
- 2007-11-27 EC EC2007007966A patent/ECSP077966A/en unknown
Also Published As
Publication number | Publication date |
---|---|
UA88375C2 (en) | 2009-10-12 |
DE102005021533A1 (en) | 2006-11-23 |
RU2371644C2 (en) | 2009-10-27 |
RU2007145526A (en) | 2009-06-20 |
ATE497136T1 (en) | 2011-02-15 |
ECSP077966A (en) | 2008-01-23 |
CN101198832A (en) | 2008-06-11 |
BRPI0608983A2 (en) | 2010-01-12 |
AU2006245951A1 (en) | 2006-11-16 |
AU2006245951B2 (en) | 2011-01-06 |
WO2006119969A1 (en) | 2006-11-16 |
EP1880150A1 (en) | 2008-01-23 |
DE502006008811D1 (en) | 2011-03-10 |
CN100557350C (en) | 2009-11-04 |
DK1880150T3 (en) | 2011-05-09 |
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