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EP3108190B1 - Dispositif de refroidissement - Google Patents

Dispositif de refroidissement Download PDF

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Publication number
EP3108190B1
EP3108190B1 EP14704596.7A EP14704596A EP3108190B1 EP 3108190 B1 EP3108190 B1 EP 3108190B1 EP 14704596 A EP14704596 A EP 14704596A EP 3108190 B1 EP3108190 B1 EP 3108190B1
Authority
EP
European Patent Office
Prior art keywords
cooling
space
cooling device
goods
cold accumulator
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
EP14704596.7A
Other languages
German (de)
English (en)
Other versions
EP3108190A1 (fr
Inventor
Jeannot DEMUTH
Igor NIKOLAJEW
Nico Girrens
Andreas Hoffmann
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
Original Assignee
B Medical Systems SARL
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 B Medical Systems SARL filed Critical B Medical Systems SARL
Publication of EP3108190A1 publication Critical patent/EP3108190A1/fr
Application granted granted Critical
Publication of EP3108190B1 publication Critical patent/EP3108190B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • F25D11/003—Transport containers
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61J—CONTAINERS SPECIALLY ADAPTED FOR MEDICAL OR PHARMACEUTICAL PURPOSES; DEVICES OR METHODS SPECIALLY ADAPTED FOR BRINGING PHARMACEUTICAL PRODUCTS INTO PARTICULAR PHYSICAL OR ADMINISTERING FORMS; DEVICES FOR ADMINISTERING FOOD OR MEDICINES ORALLY; BABY COMFORTERS; DEVICES FOR RECEIVING SPITTLE
    • A61J1/00—Containers specially adapted for medical or pharmaceutical purposes
    • A61J1/14—Details; Accessories therefor
    • A61J1/16—Holders for containers
    • A61J1/165—Cooled holders, e.g. for medications, insulin, blood or plasma
    • 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
    • F25D21/00—Defrosting; Preventing frosting; Removing condensed or defrost water
    • F25D21/14—Collecting or removing condensed and defrost water; Drip trays
    • 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
    • F25D25/00—Charging, supporting, and discharging the articles to be cooled
    • F25D25/02—Charging, supporting, and discharging the articles to be cooled by shelves
    • F25D25/022—Baskets
    • 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
    • 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
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61J—CONTAINERS SPECIALLY ADAPTED FOR MEDICAL OR PHARMACEUTICAL PURPOSES; DEVICES OR METHODS SPECIALLY ADAPTED FOR BRINGING PHARMACEUTICAL PRODUCTS INTO PARTICULAR PHYSICAL OR ADMINISTERING FORMS; DEVICES FOR ADMINISTERING FOOD OR MEDICINES ORALLY; BABY COMFORTERS; DEVICES FOR RECEIVING SPITTLE
    • A61J2200/00—General characteristics or adaptations
    • A61J2200/40—Heating or cooling means; Combinations thereof
    • A61J2200/44—Cooling means
    • 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
    • F25D2201/00—Insulation
    • F25D2201/10—Insulation with respect to heat
    • 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
    • F25D2303/0822—Details of the element
    • F25D2303/08221—Fasteners or fixing means for the element
    • 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
    • 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
    • F25D2303/0845—Position of the cold storage material in relationship to a product to be cooled below 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
    • F25D2331/804—Boxes
    • 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
    • F25D2400/00—General features of, or devices for refrigerators, cold rooms, ice-boxes, or for cooling or freezing apparatus not covered by any other subclass
    • F25D2400/02—Refrigerators including a heater

Definitions

  • the present invention relates to a cooling device, in particular a freezer, with a cooling circuit, the cooling circuit having a compressor, at least one evaporator and a condenser, and a closable cooling space with a plurality of cooling space side walls, a cooling space floor, at least one cooling element and an insulating container, wherein the evaporator and the cooling element are arranged within the cooling space in such a way that a first side of the cooling element at least partially abuts the evaporator and a second side of the cooling element faces the insulating container, and the insulating container is closed at least towards the at least one cooling element and forms a cooling goods space ,
  • Such cooling devices are usually used in remote areas, particularly in developing countries, in which a stable and safe and continuous energy supply, for example via a power grid, cannot be guaranteed. Nonetheless, especially in these areas, in which extreme climatic conditions also predominate, an uninterrupted cold chain for food and in particular medical products, such as vaccines or blood supplies, is essential. In particular, the handling and storage of the latter products within the framework of the manufacturer's requirements to maintain the usability and effectiveness of the products is often difficult, which is one of the reasons for the extremely poor living conditions of the people living there and, among other things, contributes significantly to high death rates.
  • the World Health 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 freeze packs have been established for transport over short distances, by means of which the necessary cooling of the stored substances can be ensured, at least during short-term transport.
  • the cooling temperature in particular for various vaccines, must not be more than plus 8 degrees Celsius and not less than plus 2 degrees Celsius. Adequate cooling of at least three days must also be ensured in the event of a power failure.
  • Electrical cooling devices with or without cooling elements or battery-operated cooling elements are therefore particularly suitable. It turned out to be practicable to generate the energy required for operation photovoltaically, since the solar radiation in most developing countries is sufficiently high throughout the year.
  • the cooling devices known in the prior art have, in addition to a cooling room for the products to be stored, a freezer room for producing the ice packs or freeze packs ,
  • the cooling room and the freezer room are cooled by separate cooling circuits.
  • the cold room or other cold rooms serve to store the medical products and the freezer room to generate sufficient ice to bridge the lack of energy.
  • So-called SDD cooling devices solar direct drives
  • auxiliary batteries supply the cooling devices with energy as a buffer at night and during sunless days.
  • the energy is usually used to operate an internal fan, which brings "cold” from an ice store into the refrigerated goods space during the de-energized period, or to operate a heater that prevents the temperature from falling below the minimum temperature.
  • the publication WO 2013/091913 A1 describes a cooling device.
  • the cooling device comprises at least one cooling circuit, the cooling circuit having a compressor, an evaporator and a condenser, and a closable cooling space with a plurality of cooling space side walls, a cooling space floor and a cooling space, and at least one cooling element.
  • the evaporator and the cooling element are arranged within the cooling space in such a way that the back of the cooling element lies against the evaporator and the front faces the cooling goods space.
  • the publication US 2013/0340467 A1 describes a passive cool box.
  • Inner side walls of the cool box include receiving areas which are provided for receiving cold packs.
  • the publication GB 2 383 403 A describes an insulated box.
  • a heating panel which is connected to a control circuit, is arranged on an inner side wall of the insulating box.
  • the cooling device according to the invention is distinguished from the cooling devices known from the prior art in that the first side of the cooling element, which bears against the at least one evaporator, has at least one recess into which at least one removable cold store can be inserted, and furthermore that the insulating container is preferably in the Region of its downward-facing end has at least one heating element and at least one storage element.
  • Suitable cooling elements and / or removable cold stores are those elements which, once cooled, can absorb a large amount of energy without significantly increasing one's own temperature.
  • the design of the cooling element described has the advantage that the removable cold stores necessary for the transport of medical products are cooled and then stored within the cooling space until the contents freeze, in which the cooling elements are also cooled, which in the event of a power supply failure, the refrigerated goods space cool inside the cooling device and the products stored in it. Since the at least one recess into which the at least one removable cold storage device can be inserted is arranged on the first side of the cooling element that is adjacent to the at least one evaporator, the at least one removable cold storage device can also lie directly over the extensive area of the at least one evaporator, thereby ensuring a good energy flow of the at least one removable cold store on the at least one evaporator.
  • the refrigerated goods space can be uniformly temperature-controlled with the at least one heating element and the at least one storage element, which is preferably provided in the region of the downward-facing end of the insulating container, since the heat generated there from bottom to top in the refrigerated goods space can rise. In this way it can be ensured that a temperature in the required range of preferably + 2 ° to + 8 ° Celsius is always present in the interior of the refrigerated goods space, in particular when the content of the at least one cold store is frozen and an additional cold flow is applied to the Refrigerated goods exercise.
  • the cooling device thus creates a compact and simple construction with an expanded storage capacity and small dimensions, which with a single cooling circuit both freezes and stores the removable cold stores but also stores sensitive refrigerated goods, for example vaccines, within the required temperature limits in the refrigerated goods room guaranteed. Since, in addition, the at least one storage element, in particular, avoids excessive cooling of the refrigerated goods space during the no-energy period, auxiliary batteries for operating a heater can also be dispensed with. This in turn increases the operational safety of the cooling device and solves the disposal problem of the auxiliary batteries.
  • the area inside the cooling space and outside the cooling goods space forms a freezing zone and the cooling goods room forms a cooling zone in which a cooling goods to be cooled can be stored.
  • the insulating container and the at least one heating element and / or the at least one storage element protect it from excessive cooling.
  • a freezer zone is understood to mean an area in which the temperature is clearly below the freezing point as long as the cooling device is supplied with energy.
  • the cooling zone corresponds to the refrigerated goods space in which there is an optimum temperature required for storing the refrigerated goods within the cooling device.
  • the design of the cooling room as a freezer zone has the advantage that the at least one cooling element and / or the at least one removable cold storage device arranged there on the evaporator can be cooled very strongly and directly as long as energy is available for the cooling device. Subsequently, during the energy-free period, the at least one cooling element and / or the at least one removable cold storage device can cool the refrigerated goods space the longer, the more the at least one cooling element and / or the at least one removable cold storage device has previously been cooled.
  • the temperature in the refrigerated goods space can advantageously be controlled by a cooperation of at least the insulating container and the at least one heating element and / or the at least one storage element, preferably in the range of a defined minimum temperature.
  • the at least one heating element can preferably be operated electrically and can have a regulation. This ensures that the required minimum temperature in the refrigerated goods room is not exceeded. Since the operation of a cooling device according to the invention takes place above all in developing countries, an electrically operated heating element is appropriate, since the heating element and the cooling device can also be operated there as an alternative to mains electricity by means of alternative energy sources, for example photovoltaic or with wind power.
  • the at least one storage element is preferably designed as a latent heat store, which is designed such that it releases the stored thermal energy into the refrigerated goods space when the required minimum temperature is undershot. This ensures that the required minimum temperature in the refrigerated goods room is not exceeded becomes.
  • the latent heat store according to the invention is distinguished by the fact that it is filled with a phase change material which changes from a liquid to a crystalline state at a material-specific temperature and thereby releases heat of crystallization.
  • the latent heat storage device can be designed in such a way that the phase change material in it crystallizes when the temperature falls below the required minimum temperature and thereby releases heat of crystallization into the refrigerated goods room.
  • the at least one storage element can prevent the temperature from falling below the required minimum temperature even during an energy-free period.
  • Another advantage of using a latent heat store is that the crystallization of the phase change material is reversible. This means that by adding energy, the crystals formed during cooling can be dissolved and the latent heat storage device can be returned to its original state.
  • the latent heat accumulator can be charged by the at least one heating element, preferably arranged below the at least one latent heat accumulator. Since the temperature of the latent heat store does not increase significantly during the melting of the phase change material, the use of a latent heat store also avoids excessive heat input into the refrigerated goods space during operation of the at least one heating element.
  • the refrigerated goods are stored in the refrigerated goods room in a storage device, preferably in the form of a mesh basket.
  • the storage device prevents direct contact of the refrigerated goods with the insulating container and with the at least one heating element and the at least one storage element.
  • the removal of the refrigerated goods is made easier. Since the insulated container separates the cooling zone from the freezer zone, temperatures in the refrigerated goods space on the surface of the insulated container can be locally below the required minimum temperature due to the energy flow through the insulated container.
  • the use of the storage device preferably in the form of a grid basket for storing the goods to be cooled, prevents direct contact of the goods to be cooled with the insulating container and the associated drop below the required minimum temperature in the goods to be cooled. Contact of the goods to be cooled with the at least one heating element and at least one storage element is also effectively avoided, since local heating of the at least one heating element and at least one storage element can lead to the goods to be heated up too much on contact.
  • the use of the storage device for storing the refrigerated goods in the refrigerated goods room supports a uniform temperature control of the refrigerated goods.
  • the items to be cooled are expediently formed by at least one heating element and / or the at least one storage element
  • Spacer grids that can be used within the refrigerated goods room are stored at a distance.
  • Such an arrangement ensures that the refrigerated goods have no direct contact with the at least one heating element and / or with the at least one storage element. This not only avoids local overheating of the refrigerated goods, but also achieves an even distribution of heat in the refrigerated goods room if it is cooled too much by the freezer zone.
  • the provision of a spacer grid according to the invention prevents the unauthorized removal of the at least one heating element and / or the at least one storage element. This avoids incorrect operation, for example confusing the at least one heating element and / or the at least one storage element with a removable cold storage device and consequently prevents the temperature in the refrigerated goods room from falling below the required minimum temperature.
  • the at least one cooling element and / or the at least one removable cold storage device can be filled with a substance, preferably a liquid such as water or a eutectic medium.
  • a substance preferably a liquid such as water or a eutectic medium.
  • the at least one cooling element and / or the at least one removable cold storage device can be designed to be emptied and refillable via a reclosable opening.
  • the at least one cooling element and / or the at least one removable cold storage device is preferably designed as a hollow body.
  • the opening can be resealed, it is therefore not necessary to fill the at least one cooling element and / or the at least one removable cold store at the factory. This can be done at any time on site, for example with water. In this way, the transport weight of the cooling device can advantageously be considerably reduced during transport to the place of use of the cooling device.
  • the use of water as a cooling liquid also has the advantage that water is usually also available in remote areas in developing countries.
  • water has good cold storage properties, in particular because the specific melting enthalpy of water is a multiple of the specific heat capacity and can therefore cool the refrigerated goods inside the cooling device for a long time through its melting, even if no energy is available to operate the cooling device Available.
  • a eutectic medium can be produced which has a significantly lower freezing point than pure water. This is of particular interest if the desired minimum temperature in the refrigerated goods room is to be below zero degrees Celsius.
  • the volume of the at least one cooling element and / or the at least one removable cold accumulator selected in such a way that after filling the at least one cooling element and / or the at least one removable cold store with the predefined amount of the substance, a dead volume serving as an expansion space for the freezing substance necessarily results.
  • the filling of the at least one cooling element and / or the at least one removable cold storage device if the reclosable opening is arranged vertically on the at least one cooling element and / or the at least one removable cold storage device in such a way that the required inevitable when filling Dead volume results.
  • This serves as an expansion space for the freezing water or eutectic medium and effectively prevents overfilling. This avoids deformation of the at least one cooling element and / or the at least one removable cold store when the water or the eutectic medium freezes, and thus a deterioration in the heat conduction to the evaporator of the cooling device.
  • the at least one removable cold store with a cold store holder can be inserted into and removed from the at least one recess of the at least one cooling element.
  • the use of a cold storage holder makes it easier to remove and reinsert the at least one removable cold storage, since in the frozen state it can often be surrounded by a fine layer of ice, which makes its surface particularly smooth and slippery and thus makes manipulation by the user more difficult.
  • the cooling device is characterized in that the cold storage holder is designed as an elastic spring element in such a way that the cold storage holder rests at least partially, preferably over the entire surface, elastically resiliently against a first side of the at least one removable cold storage device against the at least one evaporator , This arrangement ensures the largest possible contact area between the at least one removable cold storage device and the evaporator. As a result, the cooling of the at least one removable cold store is improved by the at least one evaporator.
  • the cold storage holder can have a holding section at its upper end, at which the cold storage holder can be manipulated or gripped by the user of the cooling device in order to insert the at least one removable cold storage device into the at least one recess or from this.
  • the holding section at the upper end of the cold storage holder facilitates the removal of the at least one removable cold storage device if it is introduced together with the cold storage device holder in the at least one recess of the at least one cooling element.
  • the at least one cooling element can have at least one recess on its upper edge and / or lower edge for receiving at least one holding means.
  • the holding means is preferably designed as an elastic spring element such that the holding means rests the first side of the at least one cooling element resiliently against the at least one evaporator, at least partially, preferably over the entire surface.
  • the elastically resilient attachment of the at least one cooling element to the evaporator effectively prevents deformation of the evaporator when the at least one cooling element freezes.
  • a direct and continuous contact with the evaporator is ensured by the spring force during the subsequent thawing. Accordingly, the cooling of the at least one cooling element is improved by the at least one evaporator.
  • the at least one recess for receiving the at least one cooling element has inclined side surfaces and an inclined bottom surface. Condensed water that may occur thus flows safely to the lowest point of the at least one recess and cannot accumulate in the at least one recess.
  • the inclined side surfaces and the inclined bottom surface ensure that, when the cooling device is operated with numerous frost and thaw cycles, no moisture from the air can collect on the cold surfaces of the at least one cooling element and / or the at least one removable cold store in the form of condensed water. Rather, it can flow downwards in a controlled manner.
  • the targeted and controlled drainage of the condensed water can effectively prevent the at least one removable cold store from freezing in the at least one recess.
  • the first side of the cooling element expediently has at least one preferably vertically arranged grooves through which the condensation water occurring in the at least one recess can preferably flow downward.
  • the inclined side surfaces and the inclined bottom surface incline towards the groove to ensure a complete drainage of the condensed water. During operation of the cooling device with numerous frost and thaw cycles, this effectively prevents the condensation water from accumulating at the lower end of the at least one recess and freezing of the at least one removable cold store.
  • the at least one cooling element can preferably be secured by means of a cover frame which can be attached to the upper edge of the cooling space.
  • the cover frame has at least one opening for access on and the removal of the at least one removable cold storage.
  • the cover frame also connects to the insulated container, so that heat transfer from the cooling zone to the freezer zone is avoided.
  • Obvious cooling device 1 is in the form of a freezer 2.
  • the freezer 2 is composed of a freezer body 45 which is closed by a lid 41 and can be closed with this. Inside the freezer 2 there is a cooling space 6.
  • the freezer 2 has an insulating container 10 arranged in the inside of the cooling space 6, which isolates the refrigerated goods space 13 from the cooling space 6.
  • the area between the insulating container 10 and the cooling space 6 is closed off at the upper edge of the cooling space 33 by a cover frame 34.
  • the cover frame 34 also has a plurality of openings 35 through which a removable cold accumulator 15 located therein can be removed with the aid of a cold accumulator holder 27.
  • the cooling device 1 can also have more or fewer openings 35 and removable ones Have cold storage 15, the cover frame 34 then having the number of removable cold storage 15 corresponding number of openings 35.
  • FIG 2 shows the below Figure 1 Shown embodiment of a cooling device 1, wherein a storage device, designed in the present embodiment as a mesh basket 22, is introduced into the refrigerated goods space 13.
  • the storage device can also be designed in the form of trays or in a similar suitable form.
  • the storage facility can be removed.
  • the refrigerated goods 21 (schematic representation) are introduced into the storage device.
  • the cooling device 1 according to the invention Figure 3 consists of a freezer 2 which has a cooling space 6 which is delimited by four cooling space side turns 7, the cooling space floor 8 and a closable cover 40.
  • An evaporator 5 is arranged on the surface of the cooling space side walls 7 facing the cooling space 6, so that it covers the surface of the cooling space side walls 7 facing the cooling space 6.
  • the cooling device 1 shown in the exemplary embodiment has an evaporator 5.
  • the cooling device 1 has four cooling elements 9. These are fastened to the surface of the evaporator 5 by retaining clips 38 in the assembled state.
  • the cooling space 6 of the present exemplary embodiment has eight removable cold stores 15 and eight associated cold store holders 27. However, other numbers are conceivable.
  • the refrigerated goods space 13 is also separated from an insulating container 10 which is closed towards the four cooling elements 9.
  • the upper and lower ends of the insulating container 10 have openings.
  • a spacer grid 23 is arranged in the region of the lower end 16 of the insulating container 10.
  • Four storage elements 18 are provided on a receiving plate 37 below the spacer grid 23.
  • a heating element 17 is also provided below the receiving plate 37.
  • the cooling device 1 has a storage device in the form of a grid basket 22, which is inserted into the cooling space 13, for receiving a cooling good 21.
  • FIG. 4 A cooling element 9 is shown together with two associated removable cold stores 15 and cold store holders 27.
  • the embodiment shown of the cooling elements 9, the removable cold accumulator 15 and the cold accumulator holder 27 corresponds to that in FIG Figure 1 to Figure 3 illustrated embodiment.
  • the cooling element 9 has two cutouts 14 on the first side 11, in the present exemplary embodiment the rear 11 of the cooling element 9. In each of the recesses 14, one of the two removable cold stores 15 is inserted together with one of the two cold store holders 27.
  • the cooling element 9 according to the invention has inclined side surfaces 31 and an inclined bottom surface 31 in each of the cutouts 14. The inclined surfaces 31 on the back 11 of the cooling element 9, each recess 14, one vertical groove 32.
  • the inclination of the inclined surfaces 31 is chosen such that the condensed water collecting in the recess 14 flows in the direction of the vertical groove and can flow out through the vertical groove 32 in the direction of the lower edge of the cooling element 29.
  • a holding means here in the form of a holding clip 38, engages.
  • the holding clip 38 visible on the lower edge 29 of the cooling element 9 likewise engages in a recess 30 on the lower edge 29 of the cooling element 9, which is not visible in the perspective view.
  • the cooling element 9 is fastened during assembly with the aid of the retaining clips 38 which engage in the recesses 30, the rear side 11 of the cooling element 9 facing the evaporator 5.
  • the retaining clips 38 are made of sheet metal, so that the retaining clips 3 press the cooling element 9 resiliently against the evaporator 5 and so the back 11 of the cooling element 9 is in contact with the surface of the evaporator 5.
  • the cold storage holders 27 are made of a flat sheet metal and have an arcuate deformation from their upper end 41 to their lower end 43.
  • the cold storage holder 27 has at its upper end 41 a holding section 42, on which the user of the cooling device 1 can grip the cold storage holder 27 ergonomically.
  • FIG 5 is a cooling element 9 according to the invention together with two associated removable cold stores 15 and cold store holders 27 according to the in Figure 1 to Figure 4 illustrated embodiment shown, wherein in Figure 5 the front of the cooling element 12 is shown. On the front of the cooling element 12 there are four recesses 30, in each of which a holding means 38 engages in order to fasten the cooling element 9 to the evaporator 5. As already explained above, the cooling element 9 in the embodiment shown has three recesses 30 on its upper edge 28 of the cooling element 9. In the Figure 4 Not visible recess 30 at the bottom of the cooling element 29 is now in Figure 5 visible.
  • the two cutouts 14 present on the rear side 11 of the cooling element 9 can be seen, each of which can accommodate a removable cold accumulator 15 and a cold accumulator holder 27.
  • the central recess 30 of the recesses 30 arranged on the upper edge 28 of the cooling element 9 has a reclosable opening 25 through which the cooling element 9 can be filled with water or a eutectic medium 24.
  • the reclosable opening 25 is lower than the upper edge 28 of the cooling element 9, so that a dead volume 26 is formed above the reusable opening 25. This will make the maximum fill level 39 of the cooling element 9 defined.
  • This dead volume 26 serves the water or the eutectic medium 24 as an expansion space during freezing.
  • a holding section 42 can be seen at their upper end 41, on which the user of the cooling device 1 can grip the cold storage holder 27 ergonomically.
  • FIG. 6 shows a detailed view of the insulating container 10 and of the storage elements 18 and the heating element 17 arranged at the lower end 16 of the insulating container 10.
  • the cooling device 1 has four storage elements 18 which, when the temperature in the refrigerated goods space 13 falls below the minimum, the stored heat into the Deliver refrigerated goods room 13.
  • a spacer grid 23 is attached above the storage elements 18.
  • the spacer grid 23 also prevents unauthorized removal of the storage elements 18.
  • the storage elements 18 are held in the cooling device 1 in a receiving plate 37.
  • a heating element 17 is located below the receiving plate 37.
  • This, for example, electrically operated heating element 17 ensures that, as long as energy is available for the operation of the cooling device 1, the storage elements 18 are sufficiently charged with heat that the temperature in the refrigerated goods space falls below the minimum temperature 13 to avoid during the dead time.
  • the heating element 17 ensures that the minimum temperature in the refrigerated goods space 13 is not exceeded by the evaporator 5, cooling elements 9 and removable cold storage 15 arranged around the insulating container in the freezer zone 19, as long as electrical energy is available.
  • FIG 7 A removable cold storage 15 according to the invention is shown. It can be seen that this removable cold store 15 has a reclosable opening 25, through which the cold store 15 can be filled with water or a eutectic medium 24. Since the reclosable opening 25 lies deeper than the highest point in the interior of the removable cold store, this results in a maximum fill level 39, which at the same time ensures that a dead volume 26 is formed above the maximum fill height 39, which when the water or eutectic medium 24 freezes as Expansion space serves.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Hematology (AREA)
  • Pharmacology & Pharmacy (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Devices That Are Associated With Refrigeration Equipment (AREA)

Claims (17)

  1. Dispositif de refroidissement (1), notamment un congélateur (2), ayant un circuit de refroidissement (3), le circuit de refroidissement (3) comprenant un compresseur (4), au moins un évaporateur (5) et un condenseur (44), et un espace de refroidissement pouvant être fermé (6) ayant plusieurs parois latérales (7) d'espace de refroidissement, un fond d'espace de refroidissement (8), au moins un élément de refroidissement (9) et un conteneur isolant (10), dans lequel le au moins un évaporateur (5) et le au moins un élément de refroidissement (9) sont agencés à l'intérieur de l'espace de refroidissement (9) de sorte qu'un premier côté (11) de l'élément de refroidissement (9) bute au moins partiellement contre le au moins un évaporateur (5) et un deuxième côté (12) de l'élément de refroidissement (9) fait face au conteneur isolant (10), et le conteneur isolant (10) est fermé au moins en direction de le au moins un élément de refroidissement (9) et forme un espace pour le refroidissement des produits (13), caractérisé en ce que le au moins un évaporateur (5) en butée contre le premier côté (11) de l'élément de refroidissement (9) est muni d'au moins une encoche (14), dans lequel au moins un accumulateur de froid amovible (15) peut être inséré.
  2. Dispositif de refroidissement (1) selon la revendication 1, caractérisé en ce qu'au moins un élément chauffant (17) et au moins un élément de stockage (18) sont disposés dans la région de l'extrémité (16) dirigée vers le bas du conteneur isolant (10).
  3. Dispositif de refroidissement (1) selon la revendication 2, caractérisé en ce que la température dans l'espace pour le refroidissement des produits (13) peut être contrôle par une interaction d'au moins le conteneur isolant (10) ainsi que le au moins un élément chauffant (17) et / ou le au moins un élément de stockage (18), et de préférence est réglable dans une plage d'une température minimale définie.
  4. Dispositif de refroidissement (1) selon la revendication 2 ou 3, caractérisé en ce que le au moins un élément chauffant (17) est de préférence à commande électrique et comporte une commande qui l'empêche de descendre en dessous de la température minimale requise dans l'espace pour le refroidissement des produits (21).
  5. Dispositif de refroidissement (1) selon la revendication 2, 3 ou 4, caractérisé en ce que le au moins un élément de stockage (18) est de préférence conçu comme un stockage de chaleur latente, qui est conçu de manière à émettre l'énergie thermique stockée dans l'espace pour le refroidissement des produits (13).
  6. Dispositif de refroidissement (1) selon la revendication 2, 3, 4 ou 5, caractérisé en ce que dans l'espace pour le refroidissement des produits (13), il est prévu une installation de stockage (22) pour stocker les produits réfrigérés (21), configuré de telle sorte qu'un contact des produits réfrigérés (21) avec le conteneur isolant (10) ainsi qu'avec le au moins un élément chauffant (17) et le au moins un élément de stockage (18) est évité et, en même temps un retrait des produits réfrigérés (21) est possible.
  7. Dispositif de refroidissement (1) selon la revendication 2, 3, 4, 5 ou 6, caractérisé en ce qu'une grille d'espacement (23) peut être insérée dans l'espace pour le refroidissement des produits (13) espacée de l'élément chauffant (17) et / ou de l'au moins un élément de stockage (18) utilisé est, par laquelle les produits réfrigérés (21) peuvent être stockées de manière espacée par rapport à l'au moins un élément chauffant (17) et / ou l'au moins un élément de stockage (18).
  8. Dispositif de refroidissement (1) selon l'une des revendications précédentes, caractérisé en ce que le au moins un élément de refroidissement (9) et / ou le au moins accumulateur de froid amovible (15) peuvent être remplis d'une substance, de préférence un liquide tel que l'eau ou un milieu eutectique (24).
  9. Dispositif de refroidissement (1) selon la revendication 8, caractérisé en ce que le volume de l'au moins un élément de refroidissement (9) et / ou de l'au moins un accumulateur de froid amovible (15) est choisi de manière telle qu'après le remplissage de le au moins un élément de refroidissement (9) et / ou de le au moins un accumulateur de froid amovible (15) avec la quantité prédéfinie de la substance il existe inévitablement un volume mort (26) servant d'espace d'expansion pour la substance de congélation.
  10. Dispositif de refroidissement (1) selon l'une des revendications précédentes, caractérisé en ce que le au moins un accumulateur de froid amovible (15) peut être inséré dans et retirer de l'au moins une encoche (14) de l'au moins un élément de refroidissement (9) avec un support d'accumulateur de froid (27).
  11. Dispositif de refroidissement (1) selon la revendication 10, caractérisé en ce que le support d'accumulateur de froid (27) est conçu sous la forme d'un ressort élastique, de sorte que le support d'accumulateur de froid (27) fait abuter un premier côté de l'au moins un accumulateur de froid amovible (15) de manière élastique contre le au moins un évaporateur (5) au moins sur une surface partielle, de préférence sur toute la surface.
  12. Dispositif de refroidissement (1) selon l'une des revendications précédentes, caractérisé en ce le support d'accumulateur de froid (27) présente à son extrémité supérieure (41) une partie de maintien (42) destinée à être manipulée par l'utilisateur.
  13. Dispositif de refroidissement (1) selon l'une des revendications précédentes, caractérisé en ce que le au moins un élément de refroidissement (9) présente sur son bord supérieur (28) et / ou son bord inférieur (29) au moins un évidement (30) pour recevoir au moins un moyen de maintien (38), dans lequel le moyen de maintien (38) est de préférence conçu sous la forme d'un élément élastique de ressort de sorte que le moyen de maintien (38) sert à faire abuter le premier côté (11) de l'au moins un élément de refroidissement (9) de manière élastique contre le au moins un évaporateur (5), au moins sur une surface partielle, de préférence sur toute la surface.
  14. Dispositif de refroidissement (1) selon l'une des revendications précédentes, caractérisé en ce que le au moins une encoche (14) pour recevoir le au moins un accumulateur de froid amovible (15) a des surfaces latérales et une surface de fond inclinées (31).
  15. Dispositif de refroidissement (1) selon l'une des revendications précédentes, caractérisé en ce que le premier côté (11) de l'élément de refroidissement (9) présente au moins une gorge (32) de préférence disposée verticalement pour l'évacuation de l'eau de condensation de l'encoche (14).
  16. Dispositif de refroidissement (1) selon l'une des revendications précédentes, caractérisé en ce que le au moins un élément de refroidissement (9) peut être fixé au moyen d'un cadre de recouvrement (34) pouvant être fixé au bord supérieur de l'espace de refroidissement (6), le cadre de recouvrement (34) comportant au moins une ouverture (34) pour accéder à l'au moins un accumulateur de froid amovible (15).
  17. Dispositif de refroidissement (1) selon l'une des revendications précédentes, caractérisé en ce que la région située à l'intérieur de l'espace de refroidissement (6) et à l'extérieur de l'espace pour le refroidissement des produits (13) forme une zone de congélation (19) et l'espace pour le refroidissement des produits (13) formée par le récipient isolant (10) forme une zone de refroidissement pour recevoir des produits réfrigérés (21).
EP14704596.7A 2014-02-17 2014-02-17 Dispositif de refroidissement Active EP3108190B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2014/053009 WO2015120911A1 (fr) 2014-02-17 2014-02-17 Appareil de réfrigération

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EP3108190A1 EP3108190A1 (fr) 2016-12-28
EP3108190B1 true EP3108190B1 (fr) 2020-01-15

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US (1) US10508854B2 (fr)
EP (1) EP3108190B1 (fr)
KR (1) KR20160121539A (fr)
CN (1) CN106233083B (fr)
AU (1) AU2014382728A1 (fr)
DK (1) DK3108190T3 (fr)
WO (1) WO2015120911A1 (fr)

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Publication number Publication date
US20170023290A1 (en) 2017-01-26
CN106233083B (zh) 2019-07-16
AU2014382728A1 (en) 2016-08-18
KR20160121539A (ko) 2016-10-19
US10508854B2 (en) 2019-12-17
DK3108190T3 (da) 2020-04-06
EP3108190A1 (fr) 2016-12-28
CN106233083A (zh) 2016-12-14
WO2015120911A1 (fr) 2015-08-20

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