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WO2008006669A1 - Cooling device - Google Patents

Cooling device Download PDF

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Publication number
WO2008006669A1
WO2008006669A1 PCT/EP2007/056027 EP2007056027W WO2008006669A1 WO 2008006669 A1 WO2008006669 A1 WO 2008006669A1 EP 2007056027 W EP2007056027 W EP 2007056027W WO 2008006669 A1 WO2008006669 A1 WO 2008006669A1
Authority
WO
WIPO (PCT)
Prior art keywords
cooling device
layer
graphite
cooling
phase change
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.)
Ceased
Application number
PCT/EP2007/056027
Other languages
German (de)
French (fr)
Inventor
Robert Finke
Dirk Heuer
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.)
SGL Carbon SE
Original Assignee
SGL Carbon SE
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by SGL Carbon SE filed Critical SGL Carbon SE
Priority to EP07765470A priority Critical patent/EP2040584A1/en
Priority to US12/376,376 priority patent/US20100024439A1/en
Publication of WO2008006669A1 publication Critical patent/WO2008006669A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B21/00—Machines, plants or systems, using electric or magnetic effects
    • F25B21/02—Machines, plants or systems, using electric or magnetic effects using Peltier effect; using Nernst-Ettinghausen effect
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47F—SPECIAL FURNITURE, FITTINGS, OR ACCESSORIES FOR SHOPS, STOREHOUSES, BARS, RESTAURANTS OR THE LIKE; PAYING COUNTERS
    • A47F3/00—Show cases or show cabinets
    • A47F3/04—Show cases or show cabinets air-conditioned, refrigerated
    • A47F3/0482—Details common to both closed and open types
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47F—SPECIAL FURNITURE, FITTINGS, OR ACCESSORIES FOR SHOPS, STOREHOUSES, BARS, RESTAURANTS OR THE LIKE; PAYING COUNTERS
    • A47F3/00—Show cases or show cabinets
    • A47F3/04—Show cases or show cabinets air-conditioned, refrigerated
    • A47F3/0482—Details common to both closed and open types
    • A47F3/0486—Details common to both closed and open types for charging, displaying or discharging the articles
    • 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
    • F25D11/00—Self-contained movable devices, e.g. domestic refrigerators
    • F25D11/006—Self-contained movable devices, e.g. domestic refrigerators with cold storage accumulators
    • 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
    • F25D23/00—General constructional features
    • F25D23/06—Walls
    • 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
    • F25D31/00—Other cooling or freezing apparatus
    • F25D31/001—Plate freezers
    • 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
    • F25D2303/085—Compositions of cold storage materials
    • 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
    • F25D2331/803—Bottles
    • 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
    • F25D2331/809—Holders

Definitions

  • the invention relates to a cooling device in the form of a refrigerator or a one-sided open sale device for the storage and presentation of perishable goods, which is equipped with an aggregate for lowering the internal temperature relative to the ambient temperature.
  • Such cooling devices require depending on the amount of exchanged contents or refrigerated goods, the thermal insulation from the environment and the design-related losses for maintaining the temperature difference between the ambient temperature and the desired internal temperature appropriately designed refrigeration units, for the greatest possible consistency to ensure the selected internal temperature.
  • the object of the invention has been found to provide a cooling device that allows a reduction in the peak power of the refrigeration unit used and at the same time provides protection of the refrigerated goods in case of power failure.
  • the invention further provides the tasks: a) to achieve the temperature reduction in the introduced refrigerated goods as quickly as possible; b) to transport the cold faster to the refrigerated goods; c) supply bottle containers with fast refrigeration; d) connect several refrigerators or showcases in series and supply them with cooling water, which is centrally cooled down and made available.
  • the object is achieved by a cooling device in the form of a refrigerator or a one-sided open sale device for storage and presentation of perishable goods, which is equipped with an aggregate for lowering the internal temperature relative to the ambient temperature, wherein the inner wall is constructed in two stages, wherein the outer layer consists of a thermal insulating layer 1 with a thermal conductivity ⁇ 1 Watt / K and the inner layer of an at least partially coated mixture of a phase change material and graphite, which covers at least a portion of the inner wall and serves as a cold accumulator layer 2.
  • the inner layer serving as a cold accumulator allows the use of a refrigeration unit with a lower cooling or peak power.
  • the load peaks are significantly reduced by the proposed design, as a cold storage or buffer is present, which compensates for the peak load.
  • the cooling device according to the invention designed in such a way that the internal temperature reduction is ensured by evaporator plates or Peltier elements, which are arranged between the insulating layer 1 and the layer of phase change material and graphite.
  • evaporator plates or Peltier elements which are arranged between the insulating layer 1 and the layer of phase change material and graphite.
  • Peltier elements which are arranged between the insulating layer 1 and the layer of phase change material and graphite.
  • a pure graphite material between cold storage and cold source to accelerate the flow of cold and make the contact more efficient (cold bridge). This achieves faster and more uniform temperature supply and distribution, charging and regeneration in the wall battery as an integral part of the cooling device.
  • the embodiment of the cooling device in that the inner walls are provided with grooves or bays, are inserted into the Kälteleitböden 3, which are in direct thermal contact with the cold accumulator layer 2, wherein further preferably the Kälteleitböden 3 consist of jacketed plates, the at least partially contain a mixture of a phase change material and graphite.
  • the inner walls are provided with grooves or bays, are inserted into the Kälteleitböden 3, which are in direct thermal contact with the cold accumulator layer 2, wherein further preferably the Kälteleitböden 3 consist of jacketed plates, the at least partially contain a mixture of a phase change material and graphite.
  • the refrigerated trays 3 made of graphite plastic.
  • additional plate-shaped cold accumulators 4 or cold storage containers or boxes are also provided, which are arranged removably in the region of the inner wall or the refrigerated shelves 3.
  • additional plate-shaped cold accumulators 4 increase the ability of the cooling device to buffer peak loads, and on the other hand they can be used as transportable cooling storages, which are used in transport containers for an uninterrupted transport of refrigerated goods and thus permit a complete or uninterrupted cooling chain.
  • cooling device in which specially for beverage bottles stretchable shafts 5 are present, which are arranged vertically or horizontally and the wall of a layer of a stretchable plastic encased mixture of a phase change material and graphite or stretchably connected to each other consisting of coated phase transition material and graphite
  • Wall segments exists. This embodiment allows a quick cooling of drinks.
  • the sheath of the cold accumulator layer 2, the additional cold accumulators 4 and the refrigerated trays 3 consists of an enamelled metal, a plastic or a lacquer layer.
  • the graphite used is preferably an expanded and recompacted material and the phase-change material used is selected from the class of materials with a phase change in the range from -30 0 C to 15 ° C.
  • the cooling medium supply is controlled centrally via a high-performance flow cooler, wherein the individual cooling showcases are connected to one another via a conduit 6 carrying the cooling medium.
  • the cooling device according to the invention is particularly preferably used as a one-sided open selling device 7.
  • FIG 1 Cross section through a thermal insulation layer and cold accumulator layer cooling device
  • Figure 2 Part of a cooling device with a cold accumulator layer and indentations for cryopanels
  • FIG 3 Cross-section through a horizontal and vertical arrangement of bottle cage cooling devices
  • Figure 4 Cross section of a cooling device with removable cold storage plates
  • FIG. 5 Cross-section through a cooling device with a central cooling unit and two or more refrigerated display cases, which are supplied via a ring line with cooling medium, which charges the cold accumulators
  • FIG. 1 shows the cross section through a cooling device according to the invention, in which the right and left side walls in the interior of the cooling device and the thermal insulation layer 1 are covered by a cold accumulator layer 2.
  • the evaporator plates, cooling medium-carrying lines 7 or Peltier elements are preferably arranged between the insulating layer 1 and the cold accumulator layer 2.
  • FIG. 1 A partial section of a cooling device according to the invention is shown in FIG.
  • the inner walls are provided with grooves, are inserted into the refrigerated trays 3.
  • the refrigerated trays 3 are in direct thermal contact to the inner wall of the cooling device forming cold accumulator layer 2 and to the cooling containers thereon or provided with cooling foils refrigerated goods.
  • Figure 3 shows a cross section through a cooling device according to the invention with bottle shafts 5 in horizontal and vertical arrangement.
  • the bottle shafts 5 are designed such that their walls consist of a layer of a mixture of a phase transition material and graphite coated with extensible plastic or of wall segments comprising stretchably interconnected, walled phase-change material and graphite.
  • FIG. 1 A cross section through a further embodiment according to the invention of a cooling device with removable cold storage plates is shown in FIG.
  • the additional plate-shaped cold accumulators 4 are removably arranged in the region of the cold accumulator layer 2 forming the inner wall. Cooling medium flows through lines 6 are embedded in the cold accumulator layer 2.
  • FIG. 5 shows a cross section through a cooling device according to the invention with a central cooling unit and two or more cooling showcases 7, which are supplied with cooling medium via a ring line 6.
  • a common cooling unit which is placed outside the sales room, ensures the temperature of the cooling medium and the load on the heat exchange between see the cooling medium and the Kälteakkumulator Mrs 2 latter by the phase transformation of the phase change material with usable energy absorption capacity.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Devices That Are Associated With Refrigeration Equipment (AREA)

Abstract

The invention relates to a cooling device in the form of a refrigerator or a sales cabinet open on one side and used to store and present perishable goods, said device being fitted with a unit for lowering the inner temperature in relation to the ambient temperature. The inner wall is constructed in two stages, the outer layer consisting of a thermal insulation layer (1) having a heat conductivity < 1 Watt/K, and the inner layer consisting of an at least partially coated mixture consisting of a phase transition material and graphite, which covers at least part of the inner wall and is used as a cold accumulator layer (2).

Description

Kühlvorrichtung cooler

Die Erfindung betrifft eine Kühlvorrichtung im Form eines Kühlschrankes oder einer einseitig offenen Verkaufseinrichtung zur Lagerung und Präsentation von verderblichen Gütern, die mit einem Aggregat zur Absenkung der Innentemperatur gegenüber der Umgebungstemperatur ausgestattet ist.The invention relates to a cooling device in the form of a refrigerator or a one-sided open sale device for the storage and presentation of perishable goods, which is equipped with an aggregate for lowering the internal temperature relative to the ambient temperature.

Solche Kühlvorrichtungen benötigen in Abhängigkeit von der Menge der ausge- tauschten Inhalts- oder Kühlgüter, der thermischen Isolation gegenüber der Umgebung und der konstruktiv bedingten Verluste für die Aufrechterhaltung des Temperaturunterschiedes zwischen der Umgebungstemperatur und der gewünschten Innentemperatur entsprechend ausgelegte Kühlaggregate, die für eine möglichst große Konstanz der gewählten Innentemperatur sorgen sollen.Such cooling devices require depending on the amount of exchanged contents or refrigerated goods, the thermal insulation from the environment and the design-related losses for maintaining the temperature difference between the ambient temperature and the desired internal temperature appropriately designed refrigeration units, for the greatest possible consistency to ensure the selected internal temperature.

Während die abzuführende Energiemenge für die konstruktiv bedingten Verluste und die thermische Isolierung relativ genau bestimmt und somit bei der Auslegung des benötigten Kühlaggregates berücksichtigt werden können, erfordert die nicht kalkulierbare Menge an ausgetauschten Gütern eine Überdimensionierung der Leistung des Kühlaggregates, um Spitzenbelastungen gewachsen zu sein.While the amount of energy to be dissipated for the design-related losses and the thermal insulation can be determined relatively accurately and thus taken into account in the design of the required cooling unit, the non-calculable amount of replaced goods requires an oversizing of the performance of the cooling unit to cope with peak loads.

Da der hauptsächliche Austausch von Gütern und damit die Spitzenbelastungen in den Zeitraum der generell höchsten Anforderung an Energie fällt, ist eine Reduzierung der Spitzenbelastung für die Energiewirtschaft besonders erstrebens- wert, da dieses mit preislichen und wirtschaftlichen Vorteilen hinsichtlich des Strombedarfs außerhalb der Spitzenzeit verbunden ist. In Schwellenländern ist auch wiederholt mit Stromausfall zu rechnen. Dort stellt sich die Frage nach einem wirkungsvollen Schutz des Kühlgutes.Since the main exchange of goods and thus the peak loads fall within the period of the generally highest demand for energy, a reduction of the peak load for the energy industry is particularly desirable, since this is associated with price and economic advantages in terms of power demand outside the peak period. In emerging markets, power outages are likely to occur repeatedly. There the question arises of an effective protection of the chilled goods.

Die Erfindung hat sich die Aufgabe gestellt, eine Kühlvorrichtung anzugeben, die eine Reduzierung der Spitzenleistung des eingesetzten Kühlaggregates gestattet und zugleich einen Schutz des Kühlgutes bei Stromausfall bietet.The object of the invention has been found to provide a cooling device that allows a reduction in the peak power of the refrigeration unit used and at the same time provides protection of the refrigerated goods in case of power failure.

Die Erfindung stellt sich weiterhin die Aufgaben: a) die Temperaturabsenkung in den eingebrachten Kühlgütern möglichst schnell zu erreichen; b) die Kälte schneller an das Kühlgut zu transportieren; c) Flaschengebinde mit schneller Kälte zu versorgen; d) mehrere Kühlschränke oder -Vitrinen in Reihe zu schalten und mit Kühlwasser zu versorgen, das zentral heruntergekühlt und zur Verfügung gestellt wird.The invention further provides the tasks: a) to achieve the temperature reduction in the introduced refrigerated goods as quickly as possible; b) to transport the cold faster to the refrigerated goods; c) supply bottle containers with fast refrigeration; d) connect several refrigerators or showcases in series and supply them with cooling water, which is centrally cooled down and made available.

Erfindungsgemäß wird die Aufgabe durch eine Kühlvorrichtung im Form eines Kühlschrankes oder einer einseitig offenen Verkaufseinrichtung zur Lagerung und Präsentation von verderblichen Gütern, die mit einem Aggregat zur Absenkung der Innentemperatur gegenüber der Umgebungstemperatur ausgestattet ist, bei der die Innenwandung zweistufig aufgebaut ist, wobei die äußere Schicht aus einer thermischen Isolierschicht 1 mit einer Wärmeleitfähigkeit < 1 Watt/K und die innere Schicht aus einer wenigstens teilweise ummantelten Mischung aus einem Phasenübergangsmaterial und Graphit besteht, die wenigstens einen Teil der Innenwandung bedeckt und als Kälteakkumulatorschicht 2 dient.According to the invention, the object is achieved by a cooling device in the form of a refrigerator or a one-sided open sale device for storage and presentation of perishable goods, which is equipped with an aggregate for lowering the internal temperature relative to the ambient temperature, wherein the inner wall is constructed in two stages, wherein the outer layer consists of a thermal insulating layer 1 with a thermal conductivity <1 Watt / K and the inner layer of an at least partially coated mixture of a phase change material and graphite, which covers at least a portion of the inner wall and serves as a cold accumulator layer 2.

Die als Kälteakkumulator dienende innere Schicht gestattet die Nutzung eines Kälteaggregats mit einer geringeren Kühl- oder Spitzenleistung. Die Belastungsspitzen werden durch die vorgeschlagene Gestaltung deutlich reduziert, da ein Kältespeicher oder -puffer vorhanden ist, der die Spitzenbelastung ausgleicht.The inner layer serving as a cold accumulator allows the use of a refrigeration unit with a lower cooling or peak power. The load peaks are significantly reduced by the proposed design, as a cold storage or buffer is present, which compensates for the peak load.

In vorteilhafter weise ist erfindungsgemäß die Kühlvorrichtung in der Weise aus- gestaltet, dass die Innentemperaturabsenkung durch Verdampferplatten oder Peltierelemente gewährleistet ist, die zwischen der Isolierschicht 1 und der Schicht aus Phasenübergangsmaterial und Graphit angeordnet sind. Von besonderer Bedeutung ist dabei die Verwendung eines reinen Graphitmaterials zwischen Kältespeicher und Kältequelle, um den Kältefluss zu beschleunigen und den Kontakt effizienter zu gestalten (Kältebrücke). Dadurch wird eine schnellere und gleichmäßigere Temperaturzufuhr und -Verteilung, die Aufladung sowie die Regeneration im Wandakku als integrierter Bestandteil der Kühlvorrichtung erzielt. Besonders bevorzugt ist die Ausgestaltung der Kühlvorrichtung dadurch, dass die Innenwandungen mit Nuten oder Buchten versehen sind, in die Kälteleitböden 3 eingeschoben sind, die in direkten thermischen Kontakt zur Kälteakkumulatorschicht 2 stehen, wobei weiterhin bevorzugt die Kälteleitböden 3 aus ummantel- ten Platten bestehen, die wenigstens zum Teil ein Gemisch aus einem Phasenübergangsmaterial und Graphit enthalten. Eine solche Gestaltung verbessert die Wärmeableitung aus den zukühlenden Gütern.Advantageously, the cooling device according to the invention designed in such a way that the internal temperature reduction is ensured by evaporator plates or Peltier elements, which are arranged between the insulating layer 1 and the layer of phase change material and graphite. Of particular importance is the use of a pure graphite material between cold storage and cold source to accelerate the flow of cold and make the contact more efficient (cold bridge). This achieves faster and more uniform temperature supply and distribution, charging and regeneration in the wall battery as an integral part of the cooling device. Particularly preferred is the embodiment of the cooling device in that the inner walls are provided with grooves or bays, are inserted into the Kälteleitböden 3, which are in direct thermal contact with the cold accumulator layer 2, wherein further preferably the Kälteleitböden 3 consist of jacketed plates, the at least partially contain a mixture of a phase change material and graphite. Such a design improves the heat dissipation from the goods to be cooled.

Alternativ dazu bestehen die Kälteleitböden 3 aus Graphit- Kunststoff.Alternatively, the refrigerated trays 3 made of graphite plastic.

Vorteilhafter Weise sind außerdem zusätzliche plattenförmige Kälteakkumulatoren 4 oder Kältespeicher-Behälter bzw. Boxen vorgesehen, die im Bereich der Innenwandung oder der Kälteleitböden 3 entnehmbar angeordnet sind. Solche zusätzlichen plattenförmigen Kälteakkumulatoren 4 erhöhen zum einen die Fä- higkeit der Kühlvorrichtung Spitzenbelastungen abzupuffern, zum anderen können sie als transportable Kühlspeicher eingesetzt werden, die in Transportbehältern für eine unterbrechungsfreien Transport von Kühlgütern verwendet werden und damit eine lückenlose oder ununterbrochene Kühlkette gestatten.Advantageously, additional plate-shaped cold accumulators 4 or cold storage containers or boxes are also provided, which are arranged removably in the region of the inner wall or the refrigerated shelves 3. On the one hand, such additional plate-shaped cold accumulators 4 increase the ability of the cooling device to buffer peak loads, and on the other hand they can be used as transportable cooling storages, which are used in transport containers for an uninterrupted transport of refrigerated goods and thus permit a complete or uninterrupted cooling chain.

Weiterhin bevorzugt ist eine Ausgestaltung der erfindungsgemäßen Kühlvorrichtung, bei der speziell für Getränkeflaschen dehnbare Schächte 5 vorhanden sind, die vertikal oder horizontal angeordnet sind und deren Wandung aus einer Schicht aus einer mit dehnbarem Kunststoff ummantelten Mischung aus einem Phasenübergangsmaterial und Graphit oder aus dehnbar miteinander verbunde- nen, aus ummantelten Phasenübergangsmaterial und Graphit enthaltendenFurther preferred is an embodiment of the cooling device according to the invention, in which specially for beverage bottles stretchable shafts 5 are present, which are arranged vertically or horizontally and the wall of a layer of a stretchable plastic encased mixture of a phase change material and graphite or stretchably connected to each other consisting of coated phase transition material and graphite

Wandsegmenten besteht. Diese Ausgestaltung gestattet einen schnelle Kühlung von Getränken.Wall segments exists. This embodiment allows a quick cooling of drinks.

Vorzugsweise besteht die Ummantelung der Kälteakkumulatorschicht 2, der zu- sätzlichen Kälteakkumulatoren 4 und der Kälteleitböden 3 aus einem emaillierten Metall, einem Kunststoff oder einer Lackschicht. Der eingesetzte Graphit ist dabei vorzugsweise ein expandiertes und rekompaktiertes Material und das eingesetzte Phasenübergangsmaterial ist aus der Klasse der Materialien mit einem Phasenwechsel im Bereich von - 300C bis 15°C ausgewählt. Vorzugsweise wird bei Kühlvitrinen die Kühlmediumversorgung zentral über einen leistungsstarken Durchlaufkühler geregelt, wobei die einzelnen Kühlvitrinen über eine das Kühlmedium führende Leitung 6 miteinander verbunden sind.Preferably, the sheath of the cold accumulator layer 2, the additional cold accumulators 4 and the refrigerated trays 3 consists of an enamelled metal, a plastic or a lacquer layer. The graphite used is preferably an expanded and recompacted material and the phase-change material used is selected from the class of materials with a phase change in the range from -30 0 C to 15 ° C. Preferably, in refrigerated display cases, the cooling medium supply is controlled centrally via a high-performance flow cooler, wherein the individual cooling showcases are connected to one another via a conduit 6 carrying the cooling medium.

Die erfindungsgemäße Kühlvorrichtung wird besonders bevorzugt als einseitig offene Verkaufseinrichtung 7 verwendet.The cooling device according to the invention is particularly preferably used as a one-sided open selling device 7.

Weitere Einzelheiten und nähere Erläuterungen sind in den nachfolgenden Figuren dargestellt, die die Erfindung beispielhaft darstellen sollen.Further details and further explanations are shown in the following figures, which are intended to illustrate the invention by way of example.

Abbildung 1 - Querschnitt durch eine Kühlvorrichtung mit thermischer Isolierschicht und Kälteakkumulatorschicht Abbildung 2 - Teilausschnitt einer Kühlvorrichtung mit Kälteakkumulatorschicht und Einbuchtungen für KälteleitbödenFigure 1 - Cross section through a thermal insulation layer and cold accumulator layer cooling device Figure 2 - Part of a cooling device with a cold accumulator layer and indentations for cryopanels

Abbildung 3 - Querschnitt durch eine Kühlvorrichtung mit Flaschenschächten in horizontaler und vertikaler Annordnung Abbildung 4 - Querschnitt durch eine Kühlvorrichtung mit herausnehmbare Kälte- SpeicherplattenFigure 3 - Cross-section through a horizontal and vertical arrangement of bottle cage cooling devices Figure 4 - Cross section of a cooling device with removable cold storage plates

Abbildung 5 - Querschnitt durch eine Kühlvorrichtung mit einem zentralen Kühlaggregat und zwei und mehr Kühlvitrinen, die über eine Ringleitung mit Kühlmedium versorgt werden, das die Kälteakkumulatoren auflädtFigure 5 - Cross-section through a cooling device with a central cooling unit and two or more refrigerated display cases, which are supplied via a ring line with cooling medium, which charges the cold accumulators

Figur 1 zeigt den Querschnitt durch eine erfindungsgemäße Kühlvorrichtung, bei der die rechte und linke Seitenwand im Inneren der Kühlvorrichtung und der thermischen Isolierschicht 1 von einer Kälteakkumulatorschicht 2 überdeckt sind. Die Verdampferplatten, Kühlmedium führenden Leitungen 7 oder Peltierelemente sind dabei vorzugsweise zwischen der Isolierschicht 1 und der Kälteakkumulator- schicht 2 angeordnet.FIG. 1 shows the cross section through a cooling device according to the invention, in which the right and left side walls in the interior of the cooling device and the thermal insulation layer 1 are covered by a cold accumulator layer 2. The evaporator plates, cooling medium-carrying lines 7 or Peltier elements are preferably arranged between the insulating layer 1 and the cold accumulator layer 2.

Eine Teilausschnitt aus einer erfindungsgemäßen Kühlvorrichtung ist in Figur 2 dargestellt. Die Innenwandungen sind mit Nuten versehen, in die Kälteleitböden 3 eingeschoben sind. Die Kälteleitböden 3 stehen in direkten thermischen Kontakt zur die Innenwandung der Kühlvorrichtung bildenden Kälteakkumulatorschicht 2 und zu den darauf befindlichen Kühlbehältern oder mit Kühlfolien versehenen Kühlgütern.A partial section of a cooling device according to the invention is shown in FIG. The inner walls are provided with grooves, are inserted into the refrigerated trays 3. The refrigerated trays 3 are in direct thermal contact to the inner wall of the cooling device forming cold accumulator layer 2 and to the cooling containers thereon or provided with cooling foils refrigerated goods.

Figur 3 zeigt einen Querschnitt durch eine erfindungsgemäße Kühlvorrichtung mit Flaschenschächten 5 in horizontaler und vertikaler Annordnung. Die Flaschenschächte 5 sind so gestaltet, dass deren Wandung aus einer Schicht aus einer mit dehnbarem Kunststoff ummantelten Mischung aus einem Phasenübergangsmaterial und Graphit oder aus dehnbar miteinander verbundenen, aus umman- telten Phasenübergangsmaterial und Graphit enthaltenden Wandsegmenten besteht.Figure 3 shows a cross section through a cooling device according to the invention with bottle shafts 5 in horizontal and vertical arrangement. The bottle shafts 5 are designed such that their walls consist of a layer of a mixture of a phase transition material and graphite coated with extensible plastic or of wall segments comprising stretchably interconnected, walled phase-change material and graphite.

Ein Querschnitt durch eine weitere erfindungsgemäße Ausgestaltung einer Kühlvorrichtung mit herausnehmbare Kältespeicherplatten ist in Figur 4 dargestellt. Die zusätzlichen plattenförmige Kälteakkumulatoren 4 sind im Bereich der die Innenwandung bildenden Kälteakkumulatorschicht 2 entnehmbar angeordnet. Kühlmedium durchflossene Leitungen 6 sind dabei in die Kälteakkumulatorschicht 2 eingebettet.A cross section through a further embodiment according to the invention of a cooling device with removable cold storage plates is shown in FIG. The additional plate-shaped cold accumulators 4 are removably arranged in the region of the cold accumulator layer 2 forming the inner wall. Cooling medium flows through lines 6 are embedded in the cold accumulator layer 2.

Figur 5 zeigt letztlich einen Querschnitt durch eine erfindungsgemäße Kühlvorrichtung mit einem zentralen Kühlaggregat und zwei und mehr Kühlvitrinen 7, die über eine Ringleitung 6 mit Kühlmedium versorgt werden. Ein gemeinsames Kühlaggregat, welches außerhalb des Verkaufraumes aufgestellt ist, sorgt für die Temperierung des Kühlmediums und die lädt über den Wärmeaustausch zwi- sehen dem Kühlmedium und der Kälteakkumulatorschicht 2 letztere durch die Phasenumwandlung des Phasenübergangsmaterials mit nutzbarem Energieaufnahmevermögen auf. Finally, FIG. 5 shows a cross section through a cooling device according to the invention with a central cooling unit and two or more cooling showcases 7, which are supplied with cooling medium via a ring line 6. A common cooling unit, which is placed outside the sales room, ensures the temperature of the cooling medium and the load on the heat exchange between see the cooling medium and the Kälteakkumulatorschicht 2 latter by the phase transformation of the phase change material with usable energy absorption capacity.

Claims

Patentansprüche claims 1. Kühlvorrichtung im Form eines Kühlschrankes oder einer einseitig offenen Verkaufseinrichtung zur Lagerung und Präsentation von verderblichen Gütern, die mit einem Aggregat zur Absenkung der Innentemperatur gegenüber der Umgebungstemperatur ausgestattet ist, dadurch gekennzeichnet, dass die Innenwandung zweistufig aufgebaut ist, wobei die äußere Schicht aus einer thermischen Isolierschicht (1 ) mit einer Wärmeleitfähigkeit < 1 Watt/K und die innere Schicht aus einer wenigstens teilweise ummantelten Mischung aus einem Phasenübergangsmaterial und Graphit besteht, die wenigstens einen Teil der Innenwandung bedeckt und als Kälteakkumulatorschicht (2) dient.1. A cooling device in the form of a refrigerator or a one-side open vending device for storage and presentation of perishable goods, which is equipped with an aggregate for lowering the internal temperature relative to the ambient temperature, characterized in that the inner wall is constructed in two stages, wherein the outer layer of a thermal insulation layer (1) with a thermal conductivity <1 watt / K and the inner layer of an at least partially sheathed mixture of a phase change material and graphite, which covers at least a portion of the inner wall and serves as a cold accumulator layer (2). 2. Kühlvorrichtung nach Anspruch 1 , dadurch gekennzeichnet, dass die Innentemperaturabsenkung durch Verdampferplatten oder Peltierelemente gewährleistet ist, die zwischen der Isolierschicht (1 ) und dem Kälteakkumulator (2), bestehend aus Phasenübergangsmaterial und Graphit, angeordnet sind.2. Cooling device according to claim 1, characterized in that the internal temperature reduction is ensured by evaporator plates or Peltier elements, which are arranged between the insulating layer (1) and the cold accumulator (2), consisting of phase change material and graphite. 3. Kühlvorrichtung nach Anspruch 2, dadurch gekennzeichnet, dass zwischen Verdampferplatten oder Peltierelemente und Kälteakkumulator (2) eine Graphitplatte als Kältebrücke angebracht ist.3. Cooling device according to claim 2, characterized in that between the evaporator plates or Peltier elements and cold accumulator (2) a graphite plate is attached as a cold bridge. 4. Kühlvorrichtung nach Anspruch 1 bis 3, dadurch gekennzeichnet, dass die Innenwandungen mit Nuten versehen sind, in die Kälteleitböden (3) eingeschoben sind, die in direkten thermischen Kontakt zur Kälteakkumulatorschicht (2) und zu den Kühlbehältern oder Kühlfolien steht.4. Cooling device according to claim 1 to 3, characterized in that the inner walls are provided with grooves, in the Kälteleitböden (3) are inserted, which is in direct thermal contact with the cold accumulator layer (2) and to the cooling containers or cooling foils. 5. Kühlvorrichtung nach Anspruch 4, dadurch gekennzeichnet, dass die Kälteleit- böden (3) aus ummantelten Platten bestehen, die wenigstens zum Teil ein5. Cooling device according to claim 4, characterized in that the Kälteleit- floors (3) consist of jacketed plates which at least partially Gemisch aus einem Phasenübergangsmaterial und Graphit enthalten. Mixture of a phase change material and graphite included. 6. Kühlvorrichtung nach Anspruch 1 bis 5, dadurch gekennzeichnet, dass zusätzliche plattenförmige Kälteakkumulatoren (4) vorgesehen und im Bereich der Innenwandung oder der Kälteleitböden (3) entnehmbar angeordnet sind.6. Cooling device according to claim 1 to 5, characterized in that additional plate-shaped cold accumulators (4) are provided and arranged removably in the region of the inner wall or the Kälteleitböden (3). 5 7. Kühlvorrichtung nach Anspruch 1 bis 5, dadurch gekennzeichnet, dass speziell für Getränkeflaschen dehnbare Schächte (5) vorhanden sind, die vertikal oder horizontal angeordnet sind und deren Wandung aus einer Schicht aus einer mit dehnbarem Kunststoff ummantelten Mischung aus einem Phasenübergangsmaterial und Graphit oder aus dehnbar miteinander verbundenen, 10 aus ummantelten Phasenübergangsmaterial und Graphit enthaltenden Wandsegmenten besteht.5. Cooling device according to claim 1 to 5, characterized in that specially for beverage bottles stretchable shafts (5) are provided, which are arranged vertically or horizontally and the wall of a layer of a stretchable plastic encased mixture of a phase change material and graphite or consists of stretchably interconnected, 10 of coated phase transition material and graphite containing wall segments. 8. Kühlvorrichtung nach Anspruch 1 bis 7, dadurch gekennzeichnet, dass die Ummantelung der Kälteakkumulatorschicht (2), der zusätzlichen Kälteakku-8. Cooling device according to claim 1 to 7, characterized in that the sheath of the cold accumulator layer (2), the additional cold accumulator 15 mulatoren (4) und der Kälteleitböden (3) aus einem emaillierten Metall, einem15 mulatoren (4) and the refrigerated trays (3) of an enamelled metal, a Kunststoff oder einer Lackschicht besteht.Plastic or a lacquer layer. 9. Kühlvorrichtung nach Anspruch 1 bis 8, dadurch gekennzeichnet, dass der eingesetzte Graphit ein expandiertes und rekompaktiertes Material ist.9. Cooling device according to claim 1 to 8, characterized in that the graphite used is an expanded and rekompaktiertes material. 2020 10. Kühlvorrichtung nach Anspruch 1 bis 9, dadurch gekennzeichnet, dass mehrere Kühlvorrichtungen eine gemeinsame von einer Kühlflüssigkeit durch- flossene und in die Kälteakkulatorschicht (2) eingebettete Leitung (6) besitzen.10. Cooling device according to claim 1 to 9, characterized in that a plurality of cooling devices have a common flowed through by a cooling liquid and in the Kälteakkulatorschicht (2) embedded line (6). 2525 11. Kühlvorrichtung nach Anspruch 1 bis 10, dadurch gekennzeichnet, dass das eingesetzte Phasenübergangsmaterial aus der Klasse der Materialien mit einem Phasenwechsel im Bereich von - 300C bis 15°C ausgewählt ist.11. Cooling device according to claim 1 to 10, characterized in that the phase change material used from the class of materials with a phase change in the range of - 30 0 C to 15 ° C is selected. 30 12. Verwendung einer Kühlvorrichtung gemäß einem der Ansprüche 1 bis 11 als einseitig offene Verkaufseinrichtung (7). 30 12. Use of a cooling device according to one of claims 1 to 11 as a one-side open sale device (7).
PCT/EP2007/056027 2006-07-11 2007-06-18 Cooling device Ceased WO2008006669A1 (en)

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DE202006010757U DE202006010757U1 (en) 2006-07-11 2006-07-11 A method for providing an open refrigerated display cabinet with uniform temperature maintenance has an inner liner within the thermal insulation comprising a phase change material and graphite
DE202006010757.6 2006-07-11

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CN101511232A (en) 2009-08-19

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