EP3108190A1

EP3108190A1 - Cooling apparatus

Info

Publication number: EP3108190A1
Application number: EP14704596.7A
Authority: EP
Inventors: Jeannot DEMUTH; Igor NIKOLAJEW; Nico Girrens; Andreas Hoffmann
Original assignee: Dometic SARL
Current assignee: B Medical Systems SARL
Priority date: 2014-02-17
Filing date: 2014-02-17
Publication date: 2016-12-28
Anticipated expiration: 2034-02-17
Also published as: AU2014382728A1; CN106233083A; WO2015120911A1; CN106233083B; EP3108190B1; US20170023290A1; KR20160121539A; DK3108190T3; US10508854B2

Abstract

Cooling apparatus (1), in particular a chest freezer (2), having a cooling circuit (3), a compressor (4), at least one evaporator (5) and a condenser (44), and a closable cooling chamber (6) with a plurality of cooling chamber side walls (7), a cooling chamber floor (8), at least one cooling element (9) and an insulating container (10). In the cooling apparatus (1), the evaporator (5) and the cooling element (9) are arranged within the cooling chamber (6) in such a way that the rear side of the cooling element (11) bears at least partially against the evaporator (5), and the front side of the cooling element (12) faces the insulating container (10), and the insulating container (10) is closed at least towards the at least one cooling element (9) and forms a chilled goods chamber (13). That rear side of the cooling element (11) which bears against the evaporator (5) has at least one cut-out (14), into which at least one removable refrigeration accumulator (15) can be inserted. At least one heating element (17) and at least one accumulator element (18) are preferably arranged in the region of the downwardly pointing end (16) of the insulating container (10).

Description

cooler

The present invention relates to a cooling device, in particular a freezer, with a cooling circuit, wherein the cooling circuit is a compressor, at least one evaporator and a

Condenser, and a closable cooling chamber having a plurality of Kühiraumsei- walls, a cold room floor, at least one cooling element and a Isolierbehäiter, wherein the evaporator and the cooling element are arranged within the cooling space, that a first side of the cooling element at least partially abuts the evaporator, and a second side of the cooling element facing the Isolierbehäiter, and the Isolierbehäiter is closed at least to the at least one cooling element and forms a Kühlgutraum.

Usually, such cooling devices are used in remote areas, in particular in developing countries, in which a stable and secure and continuous energy supply, for example, can not be guaranteed via a power grid. Nevertheless, especially in these areas, in which extreme climatic conditions usually prevail, an uninterrupted cold chain for foodstuffs and in particular medical products, such as vaccines or blood products, is indispensable. In particular, the handling and storage of the latter products within the manufacturer conditions to maintain the usability and effectiveness of the products is often difficult, which is considered a cause of the extremely poor living conditions of people living there and significantly contributes, inter alia, to high mortality rates.

The World Health Organization (WHO) has therefore established a catalog of minimum criteria to be met by the refrigeration equipment used for the transport and storage of medical products. In particular, insulated boxes with ice bags or so-called freeze packs have established themselves for transport over short distances, by means of which the necessary cooling of the stored substances can be ensured at least during the short-term transport. The storage of medical products is subject to stricter requirements. Thus, the cooling temperature must not be more than plus 8 degrees Celsius and not less than plus 2 degrees Celsius, especially for various vaccines. Furthermore, sufficient cooling of at least three days must be ensured even in the event of a power failure. Thus, in particular electric cooling devices with or without cooling elements or battery-powered cooling elements into consideration. It has proven to be practicable to photovoltaically generate the necessary energy for the operation, since the solar irradiation is sufficiently high in most developing countries throughout the year. The failure of the power supply, as occurs in a photovoltaic-powered cooling device regularly during the sunshine-free time (eg at night or clouds), but also the requirement to be able to transport medical products in cool boxes over land, it makes it necessary to produce ice, for example with which the refrigerated goods can be cooled during the energy-free time or transport. In order to be able to effectively freeze water, for example, a temperature is required which is well below 0 degrees Celsius, in order to ensure sufficient supercooling of the water and thus rapid ice formation. Temperatures of less than -6 ° Celsius have proven to be particularly effective. However, as this is well below the WHO minimum value of + 2 ° Celsius for the storage of medical products, known in the prior art cooling devices in addition to a cold room for the products to be stored a freezer to produce the ice pack or freeze packs , The cooling room and the freezer compartment are cooled by separate cooling circuits. In this case, the refrigerator or other cooling rooms for storage of medical products and the freezer room for sufficient production of ice for bridging the energy-free time is used. For example, so-called SDD refrigerators (Soiar-Direct-Drive) are known in which auxiliary batteries provide energy for buffering the refrigerators at night and on sunny days. The energy is usually used for the operation of an indoor fan, which brings "cold" from an ice storage in the Kühlgutraum during the energy-less time, or for the operation of a heater, which prevents falling below the iestesttem.

Although these systems have proven to be extremely practicable in many years of field tests. However, in these systems, additional storage space for medical products is restricted by the additional necessary freezer space for making the ice packs or freeze packs. In addition, it has proven to be problematic that the auxiliary batteries for the power supply have a limited life and the renewal of high costs and logistical costs. Furthermore, improper disposal of waste batteries causes environmental problems. Furthermore, a variety of additional components, such as fans and control components, necessary whose spare parts supply or maintenance due to the deposited layer in which these products are used, brings with it problems. Furthermore, the additional components increase the dimensions of the cooling device, the weight and the energy consumption of the cooling device. Thus, it is an object of the present invention to provide a cooling device which has an expanded storage capacity combined with a compact, reliable and simple construction while maintaining the above-described criteria and objectives.

The solution of the problem is achieved with a cooling device according to claim 1. Advantageous developments are described in the subclaims. The cooling device according to the invention is distinguished from the cooling devices known from the prior art in that the at least one evaporator first side of the cooling element has at least one recess into which at least one removable Kältespeieher can be used, and further that the insulating container preferably in Has at least one heating element and at least one storage element region of its downwardly facing end. As a cooling element and / or removable cold storage are those elements that, once they are cooled, can absorb a large amount of energy _» without thereby increasing their own temperature significantly The described design of Köhlelementes has the advantage that the for transport Removable Kiltespeicher necessary for medical products within the refrigerator to freeze the ingredient is cooled and then stored, in which also the cooling elements are cooled, which cool the cooling goods in the interior of the cooling device and the products stored therein in case of failure of the power supply. Since the at least one recess into which the at least one removable cold storage can be used, is disposed on the at least one evaporator adjacent first side of the cooling element, and the at least one removable cold storage directly on at least one evaporator over a large area, whereby a good energy flow is given by the at least one removable cold storage on the at least one evaporator. Thus, a quick freezing of the ingredient is achieved and the at least one removable Kiltespeicher is short term entnähme- and ready for use. Another essential advantage of the claimed cooling device is that the refrigerated goods space can be uniformly tempered with the at least one heating element and the at least one storage element provided preferably in the region of the downwardly pointing end of the insulated container, since the heat generated therefrom is from bottom to top can ascend in ühlgutraum. In this way it can be ensured that in the interior of the Kühlgutraums always a temperature in the required range of preferably + 2 ° to + 8 ° C is applied, especially when the ingredient of the at least one cold storage is frozen and an additional cooling flow to the Kühlgutraum exerts. The cooling device according to the invention thus provides a compact and simple construction with an extended storage capacity and small dimensions, with a single cooling circuit both the freezing and storage of removable cold storage but also the storage of sensitive refrigerated goods, eg, vaccines, within the guaranteed temperature limits in Kühlgutraum guaranteed. Since, moreover, in the energy-free time, in particular, the at least one storage element avoids excessive cooling of the refrigerated goods space, it is also possible to dispense with hit-type batteries for the operation of a heating system. This in turn increases the reliability of the cooling device and solves the disposal problem of the auxiliary batteries.

In an advantageous development of the cooling device, the region within the cooling space and outside of the cooling goods space forms a freezing zone and the cooling goods space forms a cooling zone in which a refrigerated goods to be cooled can be stored. The insulating container as well as the at least one heating element and / or the at least one storage element protect it from excessive cooling. Under a freezing zone is understood to mean a region in which the temperature is well below the freezing point, as long as the cooling device is supplied with energy. The cooling zone, however, corresponds to the Kühlgutraum, in which there is a required for the storage of the refrigerated goods optimum temperature within the cooling device. On the other hand, the design of the cooling space as a freezing zone has the advantage that the at least one cooling element arranged there on the evaporator and / or the at least one removable cold storage 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 can then cool the refrigerated goods space the longer the at least one cooling element and / or the at least one removable cold storage has been previously cooled. The temperature in the refrigerated goods space can be controlled in an advantageous manner 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 adjustable in the range of a defined minimum temperature. In an advantageous development, the at least one heating element can preferably be operated electrically and have a control. This ensures that a required minimum temperature in the refrigerated goods compartment is not undershot. Since the operation of a cooling device according to the invention takes place above all in developing countries, offers an electrically operated heating element, since as the heating element and the cooling device can be operated as an alternative to mains there also by means of alternative energy sources, such as photovoltaic or wind power.

Furthermore, it is advantageous if the at least one storage element is preferably designed as a latent heat storage, which is designed such that it emits the stored heat energy in the Kühlgutraum when falling below the required minimum temperature. This ensures that the required minimum temperature in the refrigerated goods compartment is not undershot. will be. The latent heat accumulator according to the invention is characterized in that it is filled with a Phasenwechselmateriai which merges at a material-specific temperature from the liquid to a crystalline state and thereby emits heat of crystallization. By a suitable choice of the Phasenwechseimaterials the latent heat storage can be designed so that the phase change material located in it crystallized when falling below the required minimum temperature and thereby emits heat of crystallization in the Kühlgutraum. Since the crystallization of Phasenwechseimaterials is merely a function of temperature _"can prevent falls below the required minimum temperature during a energielo- sen time at least one storage element. Another advantage of using a latent heat storage is that the crystallization of the phase change material is reversible. That is, by the supply of energy, the crystals formed on cooling can be dissolved and the latent heat storage are returned to its original state. In the case of the cooling device according to the invention, the charging of the latent heat accumulator can be effected by the at least one heating element, preferably arranged below the at least one latent heat accumulator. Since the temperature of the latent heat accumulator does not increase significantly during the melting of the phase change material, the use of a latent heat accumulator also avoids an excessive supply of heat into the refrigerated goods space during the operation of the at least one heating element.

For the operation of the cooling device, it is advantageous that the refrigerated goods are stored in the refrigerated goods space in a storage facility, preferably in the form of a mesh basket. The storage device prevents direct contact of the refrigerated goods with the insulated container and with the at least one heating element and the at least one storage element. In addition, the removal of the refrigerated goods is facilitated. Since the insulated container separates the cooling zone from the freezing zone, it can be used in the

Kühlgutraum come on the surface of the insulated container due to the energy flow through the insulating locally to temperatures that are below the required minimum temperature. The use of the storage device, preferably in the form of a grid basket for storage of the goods to be cooled prevents direct contact of the goods to be cooled with the Isolierbehäiter and an associated below the required minimum temperature in the refrigerated goods. A 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 cause the goods to be cooled too strongly heated in contact, insofar supports the use of the storage facility for storage of the refrigerated goods in Kühlgutraum a uniform temperature of the refrigerated goods.

Appropriately, in a development of the invention, the cooling device, the refrigerated goods to at least one heating element and / or the at least one storage element by a Spaced within the Kühlgutraums spaced grid stored. Such an arrangement ensures that the goods to be cooled have no direct contact with the at least one heating element and / or with the at least one storage element. As a result, not only local overheating of the goods to be cooled are avoided, but a uniform distribution of heat in Kühlgutraum achieved, it should be over-cooled by the freezing zone. Furthermore, 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 memory element. This avoids incorrect operation, for example a confusion of the at least one heating element and / or the at least one storage element with a removable cold storage and consequently prevents the temperature in the refrigerated goods space from falling below the required minimum temperature.

Furthermore, it has proven to be expedient that the at least one cooling element and / or the at least one removable cold storage with a substance, preferably a liquid such as water or a eutectic medium is befüilbar. These manageable media allow for safe and easy handling and ensure the desired function even in remote areas and adverse circumstances. Further, the at least one cooling element and / or the at least one removable bare cold storage can be emptied and refilled via a resealable opening. For this purpose, the at least one cooling element and / or the at least one removable cold storage is preferably designed as a hollow body. Due to the reclosability of the opening, it is therefore not necessary to carry out a factory-filling of the at least one cooling element and / or the at least one removable cold accumulator. This can be done at any time on site, for example with water. Advantageously, this allows the transport weight of the cooling device during transport to the site of the cooling device significantly reduced. The use of water as a cooling fluid also has the advantage that water is usually also available in remote areas in developing countries. In addition, water has good cold storage properties, in particular because the specific enthalpy of fusion of water is many times the specific heat capacity and therefore can cool the Kühlgutraum inside the cooling device for a long time by its melting, even if no energy for the operation of the cooling device for Available. Furthermore, the addition of salts in the water can produce a eutectic medium which has a significantly lower freezing point than pure water. This is of particular interest when the desired minimum temperature in the refrigerated goods space should be below zero degrees Celsius.

According to an advantageous development of the cooling device according to the invention, the volume of the at least one cooling element and / or the at least one removable cooling reservoir is Chers chosen such that after filling the at least one cooling element and / or the at least one removable Käitespeichers with the predefined amount of the substance inevitably results in serving as an expansion space for the freezing dead volume. Furthermore, it can be advantageous for the filling of the at least one cooling element and / or the at least one removable cold accumulator if the resealable opening is arranged vertically on the at least one cooling element and / or the at least one removable cold accumulator, that during filling inevitably results in the required dead volume. It serves as an expansion space for the freezing water or eutectic medium and effectively excludes overfilling. In this way, deformation of the at least one cooling element and / or the at least one removable cold accumulator during freezing of the water or the electric medium and thus a deterioration of the heat conduction to the evaporator of the cooling device is avoided.

It may be advantageous if the at least one removable cold storage can be used with a cold storage holder in the at least one recess of the at least one cooling element and removed from this again. The use of a cold storage holder facilitates the removal and replacement of the at least one removable käitespeichers, since this can often be surrounded by a fine layer of ice in the frozen state, which makes its surface particularly smooth and slippery and thus complicates manipulation by the user.

An advantageous development of the cooling device is characterized in that the cold storage holder is designed as an elastic spring element such that the cold storage holder elastically resiliently against a first side of at least one removable cold storage against the at least one evaporator at least partially, preferably over the entire surface Plant brings. This arrangement ensures the greatest possible contact area between the at least one removable cold storage and the evaporator. As a result, the cooling of the at least one removable cold storage by the at least one evaporator improves. In an advantageous development of the cooling device, the cold storage holder may have at its upper end a holding section on which the cold storage holder can be manipulated by the user of the cooling device or used to insert the at least one removable cold storage in the at least one recess or to be taken 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, if this is introduced together with the cold storage holder in the at least one recess of the at least one cooling element. In an advantageous development of the cooling device, the at least one cooling element may have at least one recess for receiving at least one retaining means at its upper edge and / or lower edge. The holding means is preferably designed as an elastic spring element such that the holding means the first side of the at least one cooling element elastically resiliently against the at least one evaporator at least partially, preferably over the entire surface brings to bear. The elastically resilient attachment of the at least one cooling element to the evaporator effectively prevents deformation of the evaporator during freezing of the at least one cooling element. At the same time a direct and continuous contact with the evaporator is again ensured during the subsequent thawing by the spring force. Accordingly, the cooling of the at least one Kühleiementes improved by the at least one evaporator.

It is expedient that the at least one recess has for receiving the at least one cooling element inclined side surfaces and an inclined bottom surface. Possibly occurring condensate thus flows safely to the lowest point of the at least one recess and can not accumulate in the at least one recess. The inclined side surfaces and the inclined bottom surface cause that during operation of the cooling device with numerous freeze and thaw cycles, no moisture from the air on the cold surfaces of the at least one cooling element and / or at least one removable cold storage in the form of condensation can accumulate. Rather, it can flow down from controlled downwards. The targeted and controlled removal of condensed water can effectively prevent freezing of the at least one removable cold accumulator in the at least one recess.

Expediently, the first side of the cooling element has at least one preferably vertically arranged grooves, through which the condensation water occurring in the at least one recess can preferably flow downwards. The inclined side surfaces and the inclined bottom surface incline toward the groove to ensure complete drainage of the condensate. During operation of the cooling device with numerous cycles of frost and thawing, an accumulation of the condensate occurring at the lower end of the at least one recess and the freezing of the at least one removable cold accumulator are effectively prevented.

Preferably, according to a further advantageous embodiment of the cooling device according to the invention, the at least one cooling element can 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 on. In addition, the cover frame also connects to the insulated container so that heat transfer from the cooling zone into the freezing zone is avoided.

With reference to the following figures, an advantageous embodiment of the cooling device according to the invention will be described, wherein

1 is a perspective view of a cooling device according to the invention,

2 is a perspective view of a cooling device according to the invention with refrigerated goods,

3 is an exploded view of the cooling device according to the invention,

4 is a front perspective view of a cooling element according to the invention and a removable cold storage and a cold storage holder,

5 is a perspective rear view of a cooling element according to the invention and a removable cold storage and a cold storage holder,

Fig. 6 is a detailed perspective view of the insulating container according to the invention with heating element and storage elements and

Fig. 7 shows a perspective view of a removable cold accumulator according to the invention. The cooling device 1 according to the invention shown in FIG. 1 is designed in the form of a freezer 2. However, other forms of cooling device are conceivable, for example as a refrigerator. The freezer 2 is composed of a freezer carcass body 45, which is closed by a cover 41 and can be closed with this. In the interior of the freezer 2 there is a cold room 6. Furthermore, the freezer 2 has an insulated container 10 arranged in the interior of the cold room 6, which separates the refrigerated goods room 3 from the cold room 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 respective removable cold storage 15 located therein can be removed by means of a cold storage holder 27. Notwithstanding the illustrated embodiment, the cooling device 1 can also have more or fewer openings 35 and can be removed Have cold storage 15, wherein the cover 34 then has the number of entnehm ble cold storage 15 corresponding number of openings 35.

FIG. 2 shows the embodiment of a cooling device 1 shown in FIG. 1, wherein a bearing device, designed as a mesh basket 22 in the present exemplary embodiment, is introduced into the cooling goods space 13. The storage device can also be designed in the form of panels or in a similar suitable form. The storage facility is removable. The refrigerated goods 21 {schematic representation) is introduced into the storage facility. The cooling device 1 according to the invention according to FIG. 3 consists of a freezer 2 which has a cold room 6 which is delimited by four cold room side turns 7, the cold room bottom 8 and a closable lid 40. At the cooling chamber 6 facing surface of the refrigerator side walls 7, an evaporator 5 is arranged so that they cover the cooling chamber 6 facing surface of the refrigerator side walls 7. Overall, the cooling device 1 shown in the exemplary embodiment has an evaporator 5. In addition, the cooling device 1 has four cooling elements 9. These are fastened by Haiteklammern 38 in the mounted state on the surface of the evaporator 5. Further, the cooling chamber 8 of the present embodiment, eight removable cold storage 15 and eight associated cold storage holder 27. Other numbers are however conceivable. According to the number of removable cold storage 15 eight openings 35 are provided in the cover 34. The refrigerated goods space 13 is further separated from an insulated to the four cooling elements 9 insulating container 10. The upper and lower ends of the insulating container 10 have openings. In the region of the lower end 16 of the insulating container 10, a spacer grid 23 is arranged. Below the spacer grid 23 four storage elements 18 are provided on a receiving plate 37. Below the receiving Weenes 37 a heating element 17 is also provided. For receiving a refrigerated goods 21, the cooling device 1 has the storage device in the form of a mesh basket 22, which is inserted into the cooling space 13.

FIG. 4 shows a cooling element 9 together with two associated removable cold accumulators 15 and cold storage holders 27. The illustrated embodiment of the cooling elements 9, the removable cold storage 15 and cold storage holder 27 corresponds to the embodiment shown in Figure 1 to Figure 3. The cooling element 9 has on the first side 11, in the present embodiment, the back 11 of the cooling element 9, two recesses 14. In the recesses 14, one of the two removable cold storage 15 are each used together with one of the two cold storage holder 27. Furthermore, the cooling element S according to the invention has inclined side surfaces 31 and an inclined bottom surface 31 in each of the recesses 14. On the inclined surfaces 31 close on the back 11 of the cooling element 9, each recess 14, a vertical groove 32 at. The inclination of the inclined surfaces 31 is selected such that the condensate collecting in the recess 14 flows in the direction of the vertical groove and can flow away through the vertical groove 32 in the direction of the lower edge of the cooling element 29. As a result, during freezing of the cooling element 9 and the associated removable cold storage 15 ice formation in the recess 14 due to accumulating condensate is avoided. Furthermore, 9 three recesses 30 can be seen at the upper edge 28 of the cooling element, in each of which a holding means, formed here in the form of a retaining clip 38, engages. The visible at the lower edge 29 of the cooling element 9 retaining clip 38 also engages in a recess 30 at the bottom

Edge 29 of the cooling element 9, which is not visible in the perspective view. By means of the engaging in the recesses 30 retaining clips 38, the cooling element 9 is fixed during assembly, wherein, the back 11 of the cooling element 9, the evaporator 5 faces. As can be seen in FIG. 4, the retaining clips 38 are made of a sheet metal, so that the retaining clips 3 press the cooling element 9 in an elastically resilient manner against the evaporator 5, and thus the

Rear i 1 of the cooling element 9 in contact with the surface of the evaporator 5 is. As well as the holding means 38, the cold storage holder 27 are made of a flat sheet and thereby have from its upper end 41 to its lower end 43 an arcuate deformation. This arcuate deformation causes the removable cold storage 15 are pressed against the evaporator 5, as soon as the removable cold storage 15 are used by means of the cold storage holder 27 in the recess 14. Furthermore, the cold storage holders 27 have at their 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 shows a cooling element 9 according to the invention together with two associated removable cold accumulators 15 and cold storage holders 27 corresponding to the exemplary embodiment described in FIGS. 1 to 4, the front side of the cooling element 12 being shown in FIG. On the front side of the cooling element 12 four recesses 30 are provided, in each of which a holding means 38 engages to secure the cooling element 9 to the evaporator 5. As already explained above, the cooling element 9 in the illustrated embodiment has three recesses 30 at its upper edge 28 of the cooling element 9. The not visible in Figure 4 recess 30 at the bottom of the cooling element 29 is now visible in Figure 5. Further, the existing on the back 11 of the cooling element 9 two recesses 14 can be seen, each of which can take a removable cold storage 15 and a cold storage holder 27. Furthermore, the central recess 30 of the recesses 30 arranged at the upper edge 28 of the cooling element 9 has a resealable opening 25, through which the cooling element 9 can be filled with water or an electrical medium 24. The resealable opening 25 is lower than the upper edge 28 of the cooling element 9, so that a Toivolumen 26 forms above the wiederverschleißbaren opening 25. This will increase the maximum fill veau 39 of the cooling element 9 defined. This dead volume 26 serves the water or the elektischen medium 24 when freezing as an expansion space. Also, at the two cold storage holders 27 at its upper end 41, a holding section 42 can be seen, in 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 the storage elements 18 and the heating element 17 arranged at the lower end 18 of the insulating container 10. In the illustrated embodiment, the cooling device 1 has four storage elements 18 which, when the minimum temperature in the refrigerated goods space 13 falls below the stored heat in the Kühlgutraum 13. In order to avoid that the refrigerated goods 21, which is located in the Kühlgutraum 13, heated too much in contact with the storage elements 18, a spacer grid 23 is mounted above the storage elements 18. In addition to the gieichmaßigen temperature of the goods to be cooled 21 in Kühlgutraum 13 and the unauthorized removal of the memory elements 18 is prevented by the spacer grid 23. The storage elements 18 are held in the cooling device 1 in a receiving plate 37. Below the receiving plate 37 is a heating element 17. This example, electrically operated heating element 17 ensures that, as long as energy is available for the operation of the cooling device 1, on the one hand, the storage elements 18 are sufficiently charged with heat, to below the minimum temperature in Kühlgutraum 13 during the energy-free time to avoid. On the other hand, the heating element 17 ensures that the minimum temperature in the refrigerated goods compartment 13 is not undershot by the evaporator 5, cooling elements 9 and removable cold storage 15 arranged around the insulated container in the freezer compartment 19, as long as electrical energy is available.

FIG. 7 shows a removable käitespeicher 15 according to the invention. It can be seen that this removable cold storage 15 has a resealable opening 25, via which the cold storage 5 can be filled with water or a eutectic medium 24. Since the resealable opening 25 is lower than the highest point in the interior of the removable cold storage, this results in a maximum filling level 39, which ensures at the same time above the maximum filling level 39, a dead volume 28, which upon freezing of the water or eutectic medium 24 as Expansion room serves. LIST OF REFERENCES 1: Cooling device

2: Kohltruhe

3: Cooling circuit (not shown)

4: compressor (not shown)

5: evaporator

6: refrigerator

7: Refrigerator side wall

8: refrigerator oden

9: cooling element

10: insulated container

11: First side of the cooling element

12: Second side of the cooling element

13: Cooling goods room

14: recess

15: Removable cold storage

18: lower end

17: heating element

18: memory element

19: freezing zone

20: cooling zone (not shown)

21: refrigerated goods (not shown)

22: storage facility

23: Spacer grid

24: Electric medium

25: Resealable opening

26: dead volume

27: Cold storage provider

28: Upper edge of the cooling element

29: Bottom edge of the cooling element

30: recess

31: Inclined side surfaces and inclined bottom surface

32: Vertical groove

33: Upper edge of the refrigerator

34: Cover frame openings

Contact surface (not shown)

Support panel

holding means

filling level

cover

Top end

holding section

Lower end

Capacitor (not shown)

Freezer cabinet

Claims

claims

Cooling device (1), in particular freezer (2), with a cooling circuit (3), wherein the cooling circuit (3) comprises a compressor (4), at least one evaporator (5) and a condenser (44), and a closable cooling space (8 ) with a plurality of Kühlraumsei- tenwänden (7), a cold room floor (8), at least one Kuhlelement (9) and an insulated container (10), wherein the at least one evaporator (5) and the at least one cooling element (9) so within the Cooling space (6) are arranged such that a first side (11) of the cooling element (9) on the at least one evaporator (5) at least partially abuts and a second side (12) of the cooling element (9) faces the insulating container (10), and the insulated container (10) is closed at least to the at least one cooling element (9) and forms a refrigerated product (13), characterized in that the first side (11) of the cooling element (9) resting against the at least one evaporator (5) at least one e recess (14) into which at least one removable cold storage (15) can be inserted, and preferably at least one heating element (17) and at least one storage element (18) arranged in the region of the downwardly facing end (16) of the Isolierbehilters (10) are.

Cooling device (1) according to claim 1, characterized in that the area within the cooling space (8) and outside the Kühlgutraumes (13) forms a freezing zone (19), and formed by the Isolierbehälter (10) Kühigutraum (13) a cooling zone for Recording of refrigerated goods (20) forms.

Cooling device (1) according to claim 1 or 2, characterized in that the temperature in the Kühlgutraum (13) by an interaction of at least the Isolierbehälters (10) and the at least one heating element (17) and / or the at least one memory element (18) can be controlled, is preferably adjustable in the range of a defined minimum temperature.

Cooling device (1) according to one of the preceding claims, characterized in that the at least one heating element (17) is preferably operated electrically and has a control which prevents falling below the required minimum temperature in Kühlgutraum (21).

5. Cooling device (1) according to one of the preceding claims, characterized in that the at least one storage element (18) is preferably designed as latent heat storage is formed, which is designed such that it emits the stored heat energy in the Kühlgutraum (13) upon reaching the required minimum temperature.

6. Cooling device (1) according to one of the preceding claims, characterized in that in the Kühlgutraum (13) has a bearing means (22) for supporting the Kühlguts (21) is provided which is formed such that a contact of the refrigerated goods (2) the isouper container

(10) and the at least one heating element (17) and at least one storage element

(18) avoided and as it were a removal of the refrigerated goods (21) is possible.

7. Cooling device (1) according to one of the preceding claims, characterized in that within the Kühlgutraums (13) a spacer grid (23) spaced from the heating element (17) and / or the at least one memory element (17) can be inserted through which the Refrigerated (21) from the at least one heating element (1) and / or the at least one storage element (17) spaced storable.

8. Cooling device (1) according to one of the preceding claims, characterized in that the at least one cooling element (9) and / or the at least one removable cold storage (15) with a substance, preferably a liquid such as water or a eutectic medium (24) is fillable.

9. Cooling device (1) according to claim 8, characterized in that the volume of the at least one cooling element (9) and / or the at least one removable Kaitespeichers (15) is selected such that after filling of the at least one cooling element (9) and / or the at least one removable cold accumulator (15) with the predefined amount of the substance inevitably results in serving as an expansion space for the freezing material dead volume (26).

10. Cooling device (1) according to one of the preceding claims, characterized in that the at least one removable cold storage (15) with a cold storage holder (27) in the at least one recess (14) of the at least one Kuhlelements (9) can be used and made this is removable again.

11. The cooling device () according to claim 10, characterized in that the cold storage holder (27) is designed as an elastic spring element such that the cold storage holder (27) a first side of the at least one removable cold storage (15) resiliently against the at least one evaporator (5) brings at least partially, preferably over the entire surface to the plant.

12. Cooling device (1) according to any one of the preceding claims, characterized in that the cold storage holder (27) at its upper end (41) has a holding portion (42) for manipulation by the user. 13, cooling device (1) according to any one of the preceding claims, characterized in that the at least one cooling element (9) at its upper edge (28) and / or lower edge (23) at least one recess (30) for receiving at least one holding middle! (38), wherein the holding means (38) is preferably designed as an elastic spring element such that the holding means (38) the first side (11) of the at least one Kühlele- element (9) resiliently against the at least one evaporator (5) at least partially, preferably over the entire area brings to the plant.

14. Cooling device (1) according to one of the preceding claims, characterized in that the at least one recess (14) for receiving the at least one cooling element (9) inclined side surfaces (31) and an inclined bottom surface (31).

15. Cooling device (1) according to one of the preceding claims, characterized in that the first side (11) of the cooling element (9) has at least one preferably vertically arranged groove (32) for the outflow of condensed water from the recess (14).

16. Cooling device (1) according to one of the preceding claims, characterized in that the at least one cooling element (9) by means of a at the upper edge of the cooling space (33) attachable cover frame (34) is securable, wherein the cover frame (34) at least one opening Having (35) for accessing the at least one entnehm ble cold storage (15).