DE9319072U1 - Food storage device - Google Patents
Food storage deviceInfo
- Publication number
- DE9319072U1 DE9319072U1 DE9319072U DE9319072U DE9319072U1 DE 9319072 U1 DE9319072 U1 DE 9319072U1 DE 9319072 U DE9319072 U DE 9319072U DE 9319072 U DE9319072 U DE 9319072U DE 9319072 U1 DE9319072 U1 DE 9319072U1
- Authority
- DE
- Germany
- Prior art keywords
- nitrogen
- generator
- cooling
- cooling chamber
- controlled atmosphere
- 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
Links
- 235000013305 food Nutrition 0.000 title claims description 8
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 41
- 229910052757 nitrogen Inorganic materials 0.000 claims description 20
- 238000001816 cooling Methods 0.000 claims description 19
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 9
- 239000001301 oxygen Substances 0.000 claims description 9
- 229910052760 oxygen Inorganic materials 0.000 claims description 9
- 239000007789 gas Substances 0.000 claims description 7
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 4
- 239000001569 carbon dioxide Substances 0.000 claims description 3
- 229910002092 carbon dioxide Inorganic materials 0.000 claims description 3
- 241000251468 Actinopterygii Species 0.000 claims description 2
- 235000013399 edible fruits Nutrition 0.000 claims description 2
- 235000019688 fish Nutrition 0.000 claims description 2
- 235000013372 meat Nutrition 0.000 claims description 2
- 235000013311 vegetables Nutrition 0.000 claims description 2
- 238000004320 controlled atmosphere Methods 0.000 claims 4
- 239000003795 chemical substances by application Substances 0.000 claims 1
- 239000012528 membrane Substances 0.000 claims 1
- JCXJVPUVTGWSNB-UHFFFAOYSA-N nitrogen dioxide Inorganic materials O=[N]=O JCXJVPUVTGWSNB-UHFFFAOYSA-N 0.000 claims 1
- 238000001223 reverse osmosis Methods 0.000 claims 1
- 238000000926 separation method Methods 0.000 claims 1
- 238000000034 method Methods 0.000 description 6
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- 239000005977 Ethylene Substances 0.000 description 1
- 230000001143 conditioned effect Effects 0.000 description 1
- 230000001627 detrimental effect Effects 0.000 description 1
- 230000002028 premature Effects 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000005070 ripening Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23B—PRESERVING, e.g. BY CANNING, MEAT, FISH, EGGS, FRUIT, VEGETABLES, EDIBLE SEEDS; CHEMICAL RIPENING OF FRUIT OR VEGETABLES; THE PRESERVED, RIPENED, OR CANNED PRODUCTS
- A23B4/00—General methods for preserving meat, sausages, fish or fish products
- A23B4/06—Freezing; Subsequent thawing; Cooling
- A23B4/066—Freezing; Subsequent thawing; Cooling the materials not being transported through or in the apparatus with or without shaping, e.g. in the form of powder, granules or flakes
-
- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23B—PRESERVING, e.g. BY CANNING, MEAT, FISH, EGGS, FRUIT, VEGETABLES, EDIBLE SEEDS; CHEMICAL RIPENING OF FRUIT OR VEGETABLES; THE PRESERVED, RIPENED, OR CANNED PRODUCTS
- A23B4/00—General methods for preserving meat, sausages, fish or fish products
- A23B4/14—Preserving with chemicals not covered by groups A23B4/02 or A23B4/12
- A23B4/16—Preserving with chemicals not covered by groups A23B4/02 or A23B4/12 in the form of gases, e.g. fumigation; Compositions or apparatus therefor
-
- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23B—PRESERVING, e.g. BY CANNING, MEAT, FISH, EGGS, FRUIT, VEGETABLES, EDIBLE SEEDS; CHEMICAL RIPENING OF FRUIT OR VEGETABLES; THE PRESERVED, RIPENED, OR CANNED PRODUCTS
- A23B7/00—Preservation or chemical ripening of fruit or vegetables
- A23B7/04—Freezing; Subsequent thawing; Cooling
- A23B7/0425—Freezing; Subsequent thawing; Cooling the material not being transported through or in the apparatus, with or without shaping, e.g. in the form of powder, granules or flakes
-
- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23B—PRESERVING, e.g. BY CANNING, MEAT, FISH, EGGS, FRUIT, VEGETABLES, EDIBLE SEEDS; CHEMICAL RIPENING OF FRUIT OR VEGETABLES; THE PRESERVED, RIPENED, OR CANNED PRODUCTS
- A23B7/00—Preservation or chemical ripening of fruit or vegetables
- A23B7/14—Preserving or ripening with chemicals not covered by groups A23B7/08 or A23B7/10
- A23B7/144—Preserving or ripening with chemicals not covered by groups A23B7/08 or A23B7/10 in the form of gases, e.g. fumigation; Compositions or apparatus therefor
- A23B7/148—Preserving or ripening with chemicals not covered by groups A23B7/08 or A23B7/10 in the form of gases, e.g. fumigation; Compositions or apparatus therefor in a controlled atmosphere, e.g. partial vacuum, comprising only CO2, N2, O2 or H2O
-
- 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
- F25D17/00—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces
- F25D17/04—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection
- F25D17/042—Air treating means within refrigerated spaces
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Polymers & Plastics (AREA)
- Wood Science & Technology (AREA)
- Zoology (AREA)
- Food Science & Technology (AREA)
- General 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)
- Vending Machines For Individual Products (AREA)
- Refuse Collection And Transfer (AREA)
Description
Dr.-Ing. Karl-Heinz HochhausDr.-Ing. Karl-Heinz Hochhaus
2107 9 Hamburg2107 9 Hamburg
Dr.-Ing. Yves WildDr.-Ing. Yves Wild
22765 Hamburg22765 Hamburg
Vorrichtung zum Aufbewahren von Lebensmitteln.Device for storing food.
Die Erfindung bezieht sich auf eine Vorrichtung zum Aufbewahren von Lebensmitteln (Früchten, Gemüse, Fleisch und Fisch) im Haushalt, Gaststätten und dergl., umfassend mindestens einen thermisch isolierten Kühlraum mit verschließbarer Beschickungsöffnung und mit einem Kälteerzeuger zwecks Absenkung der Kühlraumtemperatur.The invention relates to a device for storing food (fruit, vegetables, meat and fish) in the home, restaurants and the like, comprising at least one thermally insulated cooling chamber with a closable loading opening and with a cold generator for lowering the cooling chamber temperature.
In Lebensmitteln finden Vorgänge statt, die zum vorzeitigen Verderb der eingelagerten Lebensmittel führen. Wesentlich für diese Vorgänge sind die Lagertemperatur und der Sauerstoffgehalt in der Atmosphäre des Kühlraums.Processes take place in food that lead to premature spoilage of the stored food. The storage temperature and the oxygen content in the atmosphere of the cold room are essential for these processes.
Zur Temperaturabsenkung arbeiten Haushaltskühlschränke heutzutage vorherrschend nach dem Prinzip des Kaltdampfprozesses mit Fluorchlorkohlenwasserstoffen (FCKW).To reduce the temperature, household refrigerators today predominantly work according to the principle of the cold steam process with chlorofluorocarbons (CFCs).
Der Erfindung liegt die Aufgabe zugrunde, eine Vorrichtung der eingangs genannten Art so auszugestalten, daß die eingelagerten Lebensmittel länger aufbewahrt werden können.The invention is based on the object of designing a device of the type mentioned at the outset in such a way that the stored food can be kept for a longer period.
Erreicht wird dies durch die im Kennzeichen des Anspruchs 1 angegebenen Merkmale, nämlich dadurch, daß eine Regeleinrichtung für die Zusammensetzung der Atmosphäre,This is achieved by the features specified in the characterizing part of claim 1, namely by the fact that a control device for the composition of the atmosphere,
insbesondere für die Absenkung des Sauerstoffgehaltes, in mindestens einem der Kühlräume vorgesehen ist.in particular for reducing the oxygen content in at least one of the cold rooms.
Durch Absenken des Sauerstoffgehaltes in der Atmosphäre des Kühlraums können die Qualität des eingelagerten Gutes schädigende Umwandlungsvorgänge derartig verlangsamt werden, daß der Prozentsatz an verdorbenen Lebensmittel bei der Aubewahrung äußerst gering ist.By reducing the oxygen content in the atmosphere of the cold room, transformation processes that are detrimental to the quality of the stored goods can be slowed down to such an extent that the percentage of spoiled food during storage is extremely low.
Bevorzugte Ausführungsformen gehen aus den Unteransprüchen hervor, wobei ganz besonders die Kombination bevorzugt wird, bei der der Stickstofferzeuger direkt an den Luftkreislauf der Luft-Kältemaschine angeschlossen ist. Die Druckluft im Luftkreislauf wird durch einen geeigneten Stickstoffseparator geschickt, so daß ein Gasgemisch mit einem hohen Gehalt an Stickstoff und einem geringen Anteil an Sauerstoff in den Kühlraum eingeleitet werden kann. Dieses Gasgemisch verdrängt die dort bislang vorhandene Luft mit einem höheren Sauerstoffanteil. Der Überdruck durch Stickstoff-Zufuhr ist durch eine geeignete Vorrichtung auf geringe Werte zu begrenzen. Angestrebt wird ein Sauerstoffgehalt im Bereich von 2 bis 5%. Zusätzlich kann auch eine Einstellung des Kohlendioxidgehaltes im Bereich von 1 bis 5% angestrebt werden. Denkbar ist auch die Zufuhr oder Abfuhr irgendeines anderen Gases, um bestimmte Reifungs- oder Konservierungsvorgänge durchzuführen. Preferred embodiments emerge from the subclaims, whereby the combination in which the nitrogen generator is connected directly to the air circuit of the air-cooling machine is particularly preferred. The compressed air in the air circuit is sent through a suitable nitrogen separator so that a gas mixture with a high nitrogen content and a low oxygen content can be introduced into the cooling chamber. This gas mixture displaces the air that was previously present there with a higher oxygen content. The excess pressure caused by the nitrogen supply must be limited to low values by a suitable device. The aim is to achieve an oxygen content in the range of 2 to 5%. In addition, the carbon dioxide content can also be set in the range of 1 to 5%. It is also conceivable to supply or remove any other gas in order to carry out certain ripening or preservation processes.
Es liegt im Rahmen der vorliegenden Erfindung, entweder einen üblichen Kühlschrank nach dem Prinzip des Kaltdampfprozesses oder eine Luft-Kältemaschine einzusetzen.It is within the scope of the present invention to use either a conventional refrigerator based on the principle of the cold steam process or an air-refrigerator.
Die Erfindung wird nachstehend anhand der Zeichnung beispielsweise erläutert.The invention is explained below by way of example with reference to the drawing.
Die Zeichnung zeigt die schematische Darstellung einer Vorrichtung gemäß der Erfindung.The drawing shows a schematic representation of a device according to the invention.
In der Zeichnung ist mit 10 ein Kühlschrank bezeichnet, der unter anderem einen Tiefkühlraum und einen Kühlraum aufweist. Zusätzlich ist dieser Kühlschrank mit Kühlräumen 13 versehen, die in der nachfolgend beschriebenen Art und Weise konditioniert werden und mit CA-Räumen (Räume mit kontrollierter bzw. geregelter Atmosphäre) bezeichnet sind. Der Kühlschrank 10 weist weiterhin einen Maschinenraum auf. Links neben dem Kühlschrank sind Aggregate dargestellt, die sich in diesem Maschinenraum befinden, jedoch zur Klarheit der Darstellung räumlich von diesem getrennt wiedergegeben sind.In the drawing, 10 designates a refrigerator which, among other things, has a freezer compartment and a cooling compartment. In addition, this refrigerator is provided with cooling compartments 13 which are conditioned in the manner described below and are designated as CA rooms (rooms with a controlled or regulated atmosphere). The refrigerator 10 also has a machine room. To the left of the refrigerator, units are shown which are located in this machine room, but are shown spatially separated from it for the sake of clarity.
In der Zeichnung sind mit 11 vier Pfeile zusammengefaßt bezeichnet worden, um die einzelnen Elemente der Luft-Kältemaschine zu umfassen, zu der der mit dem Motor angetriebene Verdichter, der Abscheider, der Wärmetauscher 1, das Rückschlagventil, das Magnetventil 1 und die Expansionsmaschine gehören. Zur Steigerung des Wirkungsgrades ist es sinnvoll, den Verdichter und die Expansionsmaschine mechanisch zu koppeln.In the drawing, four arrows are grouped together with 11 to encompass the individual elements of the air-cooling machine, which includes the motor-driven compressor, the separator, the heat exchanger 1, the check valve, the solenoid valve 1 and the expansion machine. To increase the efficiency, it is advisable to mechanically couple the compressor and the expansion machine.
Mit der Bezugszahl 12 ist der Stickstofferzeuger bezeichnet worden, zu dem das Magnetventil 2, der Stickstoffseparator, der Stickstoffspeicher und das Magnetventil 3 gehören.The reference number 12 designates the nitrogen generator, which includes the solenoid valve 2, the nitrogen separator, the nitrogen storage and the solenoid valve 3.
Der Stickstofferzeuger befindet sich innerhalb desThe nitrogen generator is located inside the
Wärmestroms des Wärmetauschers 1, so daß hierdurch eineheat flow of the heat exchanger 1, so that a
Temperaturerhöhung erreicht ist, so daß der Stickstofferzeuger wirksamer arbeitet.temperature increase is achieved so that the nitrogen generator works more effectively.
Bei Kälte- oder N2-Bedarf (leerer N2-Speicher) wird der Motor eingeschaltet, wodurch der Verdichter Luft ansaugt und verdichtet. Im Wärmetauscher 1 erfolgt die Rückkühlung. Der N2-Speicher wird aufgeladen, wenn der Druck zu niedrig ist. Wenn Kälte benötigt wird, wird das Magnetventil 1 geöffnet. Durch die Expansion erfolgt eine starke Abkühlung im Wärmetauscher 2 und danach in den Wärmetauschern 3 und 4.When cooling or N 2 is required (empty N 2 storage tank), the motor is switched on, causing the compressor to take in air and compress it. Recooling takes place in heat exchanger 1. The N 2 storage tank is charged when the pressure is too low. When cooling is required, solenoid valve 1 is opened. The expansion causes a strong cooling in heat exchanger 2 and then in heat exchangers 3 and 4.
Das N2-Magnetventil (Nr. 3) wird betätigt, wenn der 02-Wert im CA-Raum 13 zu hoch ist. Das ist besonders nach dem Öffnen des CA-Raumes der Fall. In dieser Zeit wird mehr N2 als üblich benötigt, daher ist hier ein Speicher sinnvoll.The N 2 solenoid valve (No. 3) is activated when the 0 2 value in the CA chamber 13 is too high. This is especially the case after the CA chamber has been opened. During this time, more N 2 is required than usual, so a storage tank is useful here.
Vorteilhaft wäre es, die N2-Leitung nach dem Magnetventil 3, welches als Expansionsventil ausgeführt ist, durch den Tiefkühlraum zu führen und als Wärmetauscher auszubilden. Dadurch wird diese Expansionskälte genutzt und der CA-Raum vor Unterkühlung geschützt. Statt des Expansionsventils kann bei größeren Schränken auch eine Expansionsmaschine vorgesehen werden.It would be advantageous to route the N 2 line after the solenoid valve 3, which is designed as an expansion valve, through the freezer compartment and to design it as a heat exchanger. This way, this expansion cold is used and the CA compartment is protected from overcooling. Instead of the expansion valve, an expansion machine can also be provided for larger cabinets.
Nicht gezeigt sind die Sensoren in dem Kühlraum 13. Ebenfalls nicht gezeigt ist die Steuerung, welcher die einzelnen Druckwerte bzw. Gehalte an Stickstoff und Sauerstoff und Kohlendioxid zugeführt werden und welche dafür sorgt, daß die Ventile in der gewünschten Weise geschaltet werden bzw. der Druckerzeuger eingeschaltet wird, wenn dies erforderlich ist. Schließlich sind auch solche Einrichtungen nicht gezeigt, die dazu dienen können, Gase aus dem oder den Kühlräumen abzuführen, insbesondere nämlich Ethylengas.The sensors in the cooling chamber 13 are not shown. Also not shown is the control system to which the individual pressure values or contents of nitrogen, oxygen and carbon dioxide are fed and which ensures that the valves are switched in the desired manner or the pressure generator is switched on when necessary. Finally, devices that can be used to remove gases from the cooling chamber(s), in particular ethylene gas, are not shown.
Claims (9)
HamburgPostgiro office
Hamburg
BLZ 200100 20Account No. 85262-202
Bank code 200100 20
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE9319072U DE9319072U1 (en) | 1993-12-13 | 1993-12-13 | Food storage device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE9319072U DE9319072U1 (en) | 1993-12-13 | 1993-12-13 | Food storage device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE9319072U1 true DE9319072U1 (en) | 1994-05-26 |
Family
ID=6901889
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE9319072U Expired - Lifetime DE9319072U1 (en) | 1993-12-13 | 1993-12-13 | Food storage device |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE9319072U1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007039166A2 (en) * | 2005-09-27 | 2007-04-12 | Pruneri, Giorgio | Refrigerated preservation unit, particularly for domestic use |
-
1993
- 1993-12-13 DE DE9319072U patent/DE9319072U1/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007039166A2 (en) * | 2005-09-27 | 2007-04-12 | Pruneri, Giorgio | Refrigerated preservation unit, particularly for domestic use |
| WO2007039166A3 (en) * | 2005-09-27 | 2007-06-07 | Pruneri Giorgio | Refrigerated preservation unit, particularly for domestic use |
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