EP3134692B1 - Kühlvorrichtung - Google Patents

Kühlvorrichtung Download PDF

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Publication number
EP3134692B1
EP3134692B1 EP15719425.9A EP15719425A EP3134692B1 EP 3134692 B1 EP3134692 B1 EP 3134692B1 EP 15719425 A EP15719425 A EP 15719425A EP 3134692 B1 EP3134692 B1 EP 3134692B1
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EP
European Patent Office
Prior art keywords
cooling
space
coolant reservoir
evaporator
cooling device
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.)
Active
Application number
EP15719425.9A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP3134692A1 (de
Inventor
Josef Müller
Andreas Hoffmann
Ralf THURMANN
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.)
B Medical Systems SARL
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B Medical Systems SARL
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Publication date
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Publication of EP3134692A1 publication Critical patent/EP3134692A1/de
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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
    • 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
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B39/00—Evaporators; Condensers
    • F25B39/02—Evaporators
    • 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
    • F25D11/003—Transport 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
    • F25D16/00—Devices using a combination of a cooling mode associated with refrigerating machinery with a cooling mode not associated with refrigerating machinery
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D3/00—Devices using other cold materials; Devices using cold-storage bodies
    • F25D3/02—Devices using other cold materials; Devices using cold-storage bodies using ice, e.g. ice-boxes
    • F25D3/06—Movable containers
    • F25D3/08—Movable containers portable, i.e. adapted to be carried personally
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D2303/00—Details of devices using other cold materials; Details of devices using cold-storage bodies
    • F25D2303/08—Devices using cold storage material, i.e. ice or other freezable liquid
    • F25D2303/082—Devices using cold storage material, i.e. ice or other freezable liquid disposed in a cold storage element not forming part of a container for products to be cooled, e.g. ice pack or gel accumulator
    • 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
    • F25D2303/083—Devices using cold storage material, i.e. ice or other freezable liquid using cold storage material disposed in closed wall forming part of a container for products to be cooled
    • F25D2303/0831—Devices using cold storage material, i.e. ice or other freezable liquid using cold storage material disposed in closed wall forming part of a container for products to be cooled the liquid is disposed in the space between the walls of the container
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D2303/00—Details of devices using other cold materials; Details of devices using cold-storage bodies
    • F25D2303/08—Devices using cold storage material, i.e. ice or other freezable liquid
    • F25D2303/084—Position of the cold storage material in relationship to a product to be cooled
    • F25D2303/0843—Position of the cold storage material in relationship to a product to be cooled on the side of the product
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D2331/00—Details or arrangements of other cooling or freezing apparatus not provided for in other groups of this subclass
    • F25D2331/80—Type of cooled receptacles
    • F25D2331/801—Bags
    • F25D2331/8014—Bags for medical use
    • 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
    • F25D3/005—Devices using other cold materials; Devices using cold-storage bodies combined with heat exchangers

Definitions

  • the invention relates to a cooling device, in particular a freezer or cool box for the storage and transport of medical products, such as vaccines or blood products.
  • Such cooling devices can be used in remote areas, for example in developing countries, in which a stable and secure continuous energy supply, for example via a power grid, cannot be guaranteed.
  • a stable and secure continuous energy supply for example via a power grid
  • an uninterrupted cold chain for food and / or medical products such as vaccines or blood products is often indispensable.
  • the handling and storage of such products in the context of the manufacturer's requirements to maintain the usability and effectiveness of the products is often difficult, which is considered a cause of the extremely poor living conditions of the people living there and, among other things, contributes significantly to high death rates.
  • the World Trade Organization has therefore drawn up a catalog with minimum criteria that must be met by the refrigeration equipment used for the transport and storage of medical products.
  • Isolation boxes with ice packs or so-called freeze packs with which the necessary cooling of the stored substances can be ensured at least during the short-term transport, have become established for transport over short distances.
  • the cooling temperature in particular for various vaccines and blood products, must not be more than plus 8 degrees Celsius and not less than plus 2 degrees Celsius. Adequate cooling must also be ensured even if the power supply fails.
  • Electrical cooling devices with or without cooling elements or battery-operated cooling elements are therefore particularly suitable. It turned out to be practicable to produce the energy required for operation photovoltaically, since the solar radiation in most developing countries is sufficiently high throughout the year.
  • Such energy failures occur, for example, in a photovoltaically operated cooling device regularly during the time without sunshine (e.g. at night or in the case of clouds).
  • Such failures can also occur during network operation, since a stable power supply is by no means certain, especially in remote areas.
  • the so-called "hold-over" time is also very short, generally less than 20 hours. This is the period of time within which the internal temperature rises by a maximum of 10 degrees Celsius at an ambient temperature of 32 degrees Celsius.
  • cooling devices which, in addition to a cooling space for the products to be stored, have a freezer space for producing the ice packs or freeze packs.
  • the ice packs or freeze packs can be used to bridge the dead time.
  • a cooling circuit can be used to freeze the water and / or the ice pack. Due to the limited availability of electrical energy, the freezing process has to be carried out with a minimal expenditure of energy and time. Since the cooling devices should be portable, their manageability must also be ensured. For example, outer dimensions and weight should be minimized.
  • the WO 2013/091913 A1 discloses a cooling device with an evaporator which is arranged on the rear sides of cooling elements.
  • the US 5,943,876 A describes an arrangement of vacuum plates, which forms a closed structure and is connected to a cooling device.
  • the US 3,018,638 discloses a transportable cooling device with a refrigerated goods compartment that can be closed on its upper side.
  • Documents US2674101 and US6578370 disclose cooling devices for food.
  • a cooling device in particular a freezer
  • the cooling device comprises a cooling circuit which has a compressor, at least one evaporator and a condenser; a refrigerator compartment that can be closed at the top; and a coolant reservoir that at least partially surrounds an upper region of the refrigerated goods space, the at least one evaporator being arranged in the coolant reservoir, and wherein the at least one evaporator at least partially surrounds the upper region of the refrigerated goods space.
  • the cooling device according to the invention has a compact, reliable and simple construction.
  • the arrangement of the at least one evaporator of the cooling circuit in the coolant reservoir that is to say in the coolant, for example in water, ensures a good energy flow between the coolant and the at least one evaporator, thereby allowing the coolant to freeze quickly with reduced energy expenditure.
  • ice can be made quickly and efficiently.
  • the ice can also be referred to as an "ice coat" or "icelining".
  • the provision of the coolant reservoir means that no additional cooling space is required for freezing or storing ice packs or freeze packs, as a result of which the cooling device can be made compact and simple.
  • the at least one evaporator is arranged in a lower region of the coolant reservoir.
  • the at least one evaporator is set up to freeze the coolant, in particular water, starting from a lower region of the coolant reservoir to an upper region of the coolant reservoir. This allows the coolant to expand without resistance during the freezing process, which can prevent damage to the coolant reservoir during the freezing process due to the increase in volume.
  • the coolant reservoir can be a coolant reservoir that is open at the top, so that the coolant can expand without resistance when freezing.
  • the coolant reservoir which is open at the top, can be closable by a lid, for example with the same lid with which the top of the refrigerated goods compartment can also be closed.
  • the coolant reservoir can also be formed from a partially closed, one-piece container in which the at least one evaporator is arranged.
  • the at least one evaporator is designed as a tube evaporator.
  • the at least one evaporator can comprise at least one loop, and in particular three or more loops.
  • the at least one evaporator can be arranged in the coolant reservoir in a simple manner and with little effort, so that the at least one evaporator is guided around the region of the refrigerated goods space.
  • the tube evaporator which can have one or more loops, cools and freezes the coolant in the coolant reservoir evenly. It is also conceivable that the evaporator designed as a tube evaporator is arranged in the coolant reservoir in such a way that it has a gradient.
  • the coolant reservoir encloses the upper area, and in particular an upper peripheral area of the refrigerated goods space, at least partially or even completely.
  • the refrigerated goods space or the refrigerated goods can be cooled uniformly and from all sides, so that a temperature distribution within the refrigerated goods space is homogeneous. This is particularly advantageous for the storage of medical products since, for example, the entire vaccine or all stored blood is exposed to essentially the same temperature.
  • the upper region of the refrigerated goods space, which the coolant reservoir at least partially or completely encloses corresponds to 10% to 90% of a height of the refrigerated goods room, and in particular 40% to 60% of the height of the Refrigerated goods room.
  • Sufficient cooling of the refrigerated goods space can thereby be ensured on the one hand, and on the other hand a weight of the cooling device can be reduced, since the refrigerated goods space is not completely surrounded by the coolant reservoir or is embedded or immersed in it.
  • the coolant reservoir is open or closed at the top.
  • the coolant reservoir has a U-shaped cross section.
  • the U-shaped cross section can be open at the top, so that the coolant can expand upwards without resistance during the freezing.
  • the coolant reservoir comprises outer walls that are at least partially undulating or rotated.
  • the outer walls of the coolant reservoir can be wave-shaped or rotated in a direction that is perpendicular to the vertical extent of the refrigerated goods space.
  • the cooling device comprises a cold room with four cold room side walls, a cold room floor and a cover, which is configured to close the cold room on its upper side.
  • a receiving space or cavity can be formed between the four cold room side walls of the cold room and the outer walls of the refrigerated goods room, wherein the coolant reservoir can be arranged in this receiving space.
  • the receiving space can be at least partially filled with air and / or with an insulating material, for example an insulating foam. be filled.
  • a thermal energy flow between the coolant reservoir and the refrigerated goods space can be set or influenced by the insulating material.
  • the coolant reservoir is arranged at a distance from the four cold room side walls of the cold room and / or the outer walls of the cold room.
  • a predetermined thermal insulation can be provided between the refrigerated goods room and the coolant reservoir.
  • the distance is selected such that predetermined heat exchange can take place between the refrigerated goods space and the coolant reservoir. This can, for example, prevent the interior and the walls of the refrigerated goods room from dropping to a temperature below 2 degrees Celsius.
  • the cooling device is set up to provide a temperature in the refrigerated goods room in a certain range of in particular plus 2 to plus 8 degrees Celsius, for example if an electrical primary cooling circuit of the cooling device due to a power interruption (e.g. at night, in the case of clouds or in the event of a power failure) is not functional.
  • a suitable design of the coolant circuit can be provided, which is designed to supply heat to the refrigerated goods room. This can, for example, prevent the interior of the refrigerated goods room from dropping to a temperature below 2 degrees Celsius.
  • the cooling device is typically a freezer for storing and transporting medical products, such as vaccines or blood products.
  • Such freezers can advantageously be used in remote areas, for example in developing countries, in which a stable and secure continuous energy supply, for example via a power grid, cannot be guaranteed.
  • Fig. 1 shows a schematic representation of a cooling device 100.
  • the cooling device 100 comprises a cooling circuit 200 which has a compressor 210, at least one evaporator 220 and a condenser (not shown), a refrigerated goods compartment 300 which can be closed at the top, and a coolant reservoir 400 which at least partially encloses an upper region of the refrigerated goods compartment 300.
  • the evaporator 220 is arranged in the coolant reservoir 400 and at least partially surrounds the upper region of the refrigerated goods space 300.
  • coolant reservoir 400 is a container or tub that is adapted to hold a coolant or coolant (not shown), such as water.
  • the refrigerated goods room 300 is provided and designed to hold or store refrigerated goods, for example medical products.
  • a failure of the energy supply such as occurs regularly in a photovoltaically operated cooling device during the sun-free period, for example at night or when the sky is cloudy, but also the requirement to be able to transport medical products overland in the cooling device makes it necessary, for example To generate ice with which the refrigerated goods in the refrigerated goods room 300 can be cooled during the energy-free time or during transport.
  • a good energy flow can be achieved by arranging the at least one evaporator 220 of the cooling circuit directly in the coolant reservoir 400, that is to say in the coolant, for example water between the coolant and the at least one evaporator 220 are ensured, which enables a quick freezing of the coolant with reduced energy consumption, see also Fig. 5 and Fig. 6 .
  • ice can be produced quickly and efficiently according to the invention.
  • the ice can also be referred to as an "ice coat" or "icelining".
  • the provision of the coolant reservoir 400 means that no additional cooling space is required for freezing or storing ice packs or freeze packs, as a result of which the cooling device 100 is compact, simple and inexpensive to produce.
  • the ice packs or freeze packs themselves are also not necessary, which further simplifies the construction of the cooling device 100 and reduces manufacturing costs, in particular since there are fewer moving parts.
  • the coolant reservoir 400 and / or the at least one evaporator 220 does not extend beyond the top or an upper edge of the cooling space 300.
  • the cooling device 100 can be made compact.
  • a height of the cooling device 100 can be minimized since the at least one evaporator 220 surrounds the upper region of the refrigerated goods room 300 and is therefore not arranged above or below the refrigerated goods room 300.
  • the compressor 210 and / or the condenser can be arranged on one side of the refrigerated goods space 300. This enables a compact structure. In particular, the height of the cooling device 100 can be reduced further by the lateral arrangement of the compressor 210 and / or the condenser and the influence of the inevitable heat development of the cooling device on the cooling space is minimized.
  • the cooling circuit is designed as a refrigeration machine that uses a thermodynamic cycle.
  • external energy for example from the compressor, can absorb heat, for example the coolant to be frozen, below the ambient temperature at one point and can be given off at a higher temperature elsewhere, for example at the condenser.
  • the refrigerated goods room 300 has the top and a bottom.
  • the terms “top side” and “bottom side” refer to opposite sides of the refrigerated goods space 300 and the cooling device 100, respectively.
  • the top side and the bottom side are connected by side walls.
  • the bottom can also be called “bottom”.
  • the top has an opening through which the refrigerated goods space 300 is accessible from the outside.
  • the opening can be closed, and in particular can be closed by a cover (not shown).
  • Fig. 2 shows a schematic sectional view of the cooling device 100 of FIG Fig. 1 .
  • the evaporator 220 is designed to freeze the coolant starting from a lower region of the coolant reservoir 400 to an upper region of the coolant reservoir 400.
  • the coolant freezes from the underside of the refrigerated goods room 300 or the cooling device 100 in the direction of the upper side of the refrigerated goods room 300 or the cooling device 100, indicated by the arrow A. This allows the coolant to expand without resistance during the freezing process, causing damage of the coolant reservoir 400 or the cooling device 100 is prevented.
  • the evaporator 220 can be arranged in a lower region of the coolant reservoir 400 in order to freeze the coolant starting from the lower region of the coolant reservoir 400 to the upper region of the coolant reservoir 400. As for example in Fig. 2 can be seen, the evaporator 220 is arranged in the lower two thirds or a lower half of the coolant reservoir 400. Typically, the at least one evaporator 220 is arranged in the coolant reservoir 400 such that the at least one evaporator 220 is at least partially, and in particular completely, surrounded by the coolant or immersed in the coolant.
  • the coolant reservoir 400 may have a volume that can hold a predetermined amount of the coolant. In this case, less than 90%, and in particular between 50% and 90%, of the volume of the coolant reservoir 400 can be filled with the coolant. In other words, the coolant reservoir 400 can be filled with the coolant up to a certain height, which is less than the total height of the coolant reservoir 400. As a result, the coolant can expand upwards during freezing without it emerging from the coolant reservoir 400.
  • the coolant reservoir 400 is open at the top.
  • the coolant reservoir 400 is designed to be closed at the top.
  • less than 90%, and in particular between 50% and 90%, of the volume of the coolant reservoir 400 can be filled with the coolant, thereby preventing damage to the coolant reservoir 400 or the cooling device 100 can be.
  • the coolant reservoir 400 has a U-shaped cross section, as exemplified in FIG Fig. 2 is shown.
  • the U-shaped cross section is open at the top, so that the coolant can expand upwards without resistance when freezing, thereby preventing damage to the coolant reservoir 400 or the cooling device 100.
  • the coolant reservoir 400 which is open at the top, can be closed by a cover (not shown), and in particular by the same cover which also closes the top of the refrigerated goods space 300.
  • the coolant can be water.
  • the present disclosure is not limited to the use of water, and any other coolant or coolant suitable for the present purpose can be used.
  • the coolant reservoir 400 comprises outer walls 412, which are wave-shaped or rotated in a direction essentially perpendicular to the height extension of the refrigerated goods space 300, as is the case in the example of FIG Fig. 2 is shown.
  • the cooling device 100 and in particular the coolant reservoir 400, can be provided with increased stability.
  • the cooling device 100 comprises a cold room 110 with four cold room side walls 112, a cold room floor 114 and a closable cover (not shown), which is set up to close the cold room 300 on its upper side.
  • the refrigerated goods room 300 and the coolant reservoir 400 are arranged in the cold room 110 or inserted into the cold room 110.
  • the top of the refrigerated goods space 300 and the coolant reservoir 400 open at the top can be closed by the same cover.
  • the cooling device 100 can have a simple construction.
  • a receiving space 120 or cavity is formed between the four cold room side walls 112 of the cold room 110 and the outer walls 312 of the refrigerated goods room 300.
  • the coolant reservoir 400 is arranged in this receiving space 120.
  • the receiving space 120 is at least partially with air, as in FIG Fig. 2 shown, and / or an insulating material (not shown), for example an insulating foam.
  • the insulating material thermally isolates the refrigerated goods space 300 from the surroundings of the cooling device 100 or the outside world.
  • the coolant reservoir 400 is arranged at a distance from the four cold room side walls 112 of the cold room 110 and / or the outer walls 312 of the cold storage room 300.
  • a distance between the refrigerated goods space 300 and the coolant reservoir 400 a predetermined thermal insulation between the refrigerated goods space 300 and the coolant reservoir 400 is achieved.
  • the distance is selected such that a predetermined heat exchange takes place between the refrigerated goods space 300 and the coolant reservoir 400. This prevents the interior of the refrigerated goods room 300 from dropping to a temperature below 2 degrees Celsius.
  • the area between the refrigerated goods space 300 and the coolant reservoir 400 can be at least partially filled with the insulating material, for example the insulating foam.
  • the cooling space 110, the coolant reservoir 400 and / or the refrigerated goods space 300 preferably consists of a plastic, for example of polyethylene or polypropylene. Of course, the corresponding parts can also consist of another suitable material, in particular metal.
  • the cooling space 110, the coolant reservoir 400 and the refrigerated goods space 300 are formed in one piece in the present exemplary embodiment. However, the cooling space 110, the coolant reservoir 400 and the refrigerated goods space 300 can also be formed in several parts.
  • the cooling device 100 makes it possible to provide a temperature in the refrigerated goods room 300 in a specific range of, for example, plus 2 to plus 8 degrees Celsius, for example if the electrical primary cooling circuit of the cooling device 100 is not functional due to an interruption in the power supply, for example at night or when the sky is cloudy or in the event of a power failure is. This takes place through a suitable design of the coolant circuit, the volume of the coolant reservoir 400, the height of the coolant reservoir 400, the type and amount of the insulating material in the receiving space 120, the distance between the refrigerated goods space 300 and the coolant reservoir 400 and / or a combination of these measures.
  • a heating device (not shown) can also be provided, which is designed to supply heat to the refrigerated goods space 300. This can, for example, prevent the interior of the refrigerated goods room 300 from dropping to a temperature below 2 degrees Celsius.
  • a heating device can be battery-operated, for example, so that the heating device is functional even when there is no external energy source.
  • FIG. 3 shows a schematic representation of the cooling circuit of the cooling device 100.
  • FIG. 4 shows a schematic sectional view of the cooling device 100 with the evaporator 220 with loops according to embodiments of the present disclosure.
  • the evaporator 220 is designed as a tube evaporator and extends at least partially in a circumferential direction of the refrigerated goods space 300, so that the evaporator at least partially encloses the upper region of the refrigerated goods space 300, and in particular an upper peripheral region of the refrigerated goods space 300.
  • the evaporator 220 comprises at least one loop and, according to the exemplary embodiment described, three loops.
  • the at least one evaporator 220 can be arranged in the coolant reservoir 400 in a simple manner and with little effort, so that the evaporator 220 is guided around the upper region of the refrigerated goods space 300.
  • the loop-shaped tube evaporator allows the coolant in the coolant reservoir 400 to be cooled and frozen uniformly.
  • the evaporator 220 has a tube 222 which, coming from the compressor 210, extends at least partially around a circumferential region of the refrigerated goods space 300 and then, after a first (vertical) bend 224, runs back about 180 ° in the direction of the compressor 210. This course forms a first loop.
  • the evaporator 220 has a second (vertical) bend 226 by approximately 180 ° and thus forms a second loop, etc.
  • the evaporator 230 has three loops, as in FIGS Fig. 3 and 4th shown. However, an evaporator with fewer or more loops is also conceivable.
  • evaporator 220 has a tube 222 which, coming from the compressor 210 (not shown), extends around a peripheral region of the refrigerated goods space 300.
  • the pipe runs with a slight slope of approximately 5 ° to 15 °.
  • the coolant reservoir 400 completely surrounds the upper region of the refrigerated goods space 300, and in particular the upper peripheral region of the refrigerated goods space 300.
  • the refrigerated goods room 300 is cooled uniformly and from all sides, so that the temperature distribution within the refrigerated goods room 300 is homogeneous. This is particularly advantageous for the storage of medical products, since the stored objects, for example the vaccine or blood products, are exposed to essentially the same temperature.
  • the upper area of the refrigerated goods compartment 300 which is at least partially or completely enclosed by the coolant reservoir 400, corresponds to 10% to 90% of the height of the refrigerated goods compartment 300, and in particular 40% to 60% of the height of the refrigerated goods compartment 300 ensured, and on the other hand, the weight of the cooling device 100 is reduced since the refrigerated goods space 300 is not completely surrounded by the coolant reservoir 400, that is to say over its entire height, or is embedded or immersed therein.
  • the cooling device 100 is designed as a freezer for storing and transporting medical products, for example vaccines or blood products.
  • Such freezers can advantageously be used in remote areas, for example in developing countries, in which a stable and secure continuous energy supply, for example via a power grid, cannot be guaranteed.
  • the present invention provides a cooling device in which at least one evaporator is arranged directly in a coolant reservoir or in the coolant.
  • a good energy flow can be ensured between the coolant and the evaporator, as a result of which the coolant can freeze quickly, for example in less than 1 hour, with reduced energy expenditure.
  • the provision of the coolant reservoir means that no additional cooling space is required for freezing or storing ice packs or freeze packs, as a result of which the cooling device can be made compact and simple.
  • manufacturing costs can be reduced since no such separate ice packs or freeze packs are necessary and the cooling device can be manufactured in a simple and inexpensive manner.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Devices That Are Associated With Refrigeration Equipment (AREA)
EP15719425.9A 2015-04-15 2015-04-15 Kühlvorrichtung Active EP3134692B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2015/058207 WO2016165763A1 (de) 2015-04-15 2015-04-15 Kühlvorrichtung

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US (1) US10309712B2 (da)
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KR (1) KR20170138917A (da)
CN (1) CN107567571B (da)
AU (1) AU2015391356A1 (da)
DK (1) DK3134692T3 (da)
TW (1) TW201641904A (da)
WO (1) WO2016165763A1 (da)

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USD1002676S1 (en) 2019-08-30 2023-10-24 Dometic Sweden Ab Appliance
USD1026969S1 (en) 2020-08-31 2024-05-14 Dometic Sweden Ab Refrigerator

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GB2575859B (en) * 2018-07-26 2022-03-30 B Medical Systems Sarl Ice-lined vaccine refrigerator
JP7225666B2 (ja) * 2018-10-18 2023-02-21 日本電産株式会社 冷却ユニット
GB2578758B (en) * 2018-11-07 2021-03-24 B Medical Systems Sarl Cold storage device
WO2021086203A1 (es) * 2019-10-30 2021-05-06 Universidad Peruana Cayetano Heredia Cámara insulada refrigerada con energía fotovoltaica
EP4023965A1 (en) * 2021-01-05 2022-07-06 Thermo King Corporation Nested cooling arrangements for refrigerated transport

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DE102010023564A1 (de) * 2010-06-09 2011-12-15 Wolfgang Wasserthal Kühlvorrichtung
DK2795210T3 (da) * 2011-12-20 2021-06-28 B Medical Systems Sarl Køleelement og køleindretning
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US2674101A (en) * 1950-09-08 1954-04-06 Int Harvester Co Refrigeration control means
US6578370B1 (en) * 2001-10-03 2003-06-17 Alfonso G. Andress Continuous flow quick-chilling apparatus and method for mass production of precooked foods

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USD1002676S1 (en) 2019-08-30 2023-10-24 Dometic Sweden Ab Appliance
USD1026969S1 (en) 2020-08-31 2024-05-14 Dometic Sweden Ab Refrigerator

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US10309712B2 (en) 2019-06-04
WO2016165763A1 (de) 2016-10-20
DK3134692T3 (da) 2020-09-21
CN107567571A (zh) 2018-01-09
AU2015391356A1 (en) 2016-12-15
CN107567571B (zh) 2020-08-18
TW201641904A (zh) 2016-12-01
KR20170138917A (ko) 2017-12-18
EP3134692A1 (de) 2017-03-01
US20180023876A1 (en) 2018-01-25

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