IT202100024584A1 - CABINET FOR REFRIGERATION AND CONTAINMENT OF FOOD PRODUCTS - Google Patents

Description

DESCRIPTION

Field of application of the invention

[001] The present invention finds its place in the technical sector of displays and, in particular, has as its object a cabinet suitable for promoting the refrigeration and containment of food products.

State of the art

[002] As known, in the field of storage and sale of rapidly perishable food products ? the use of refrigerated cabinets, also commonly called ?refrigerated counter? or ?refrigerated cabinet?, designed to allow the containment of food products intended to be stored in cold and temperature-controlled environments.

[003] In large exhibition areas (supermarkets, hypermarkets, etc.) ? It is common to set up a separate and remote installation of the components that make up the refrigerated counter.

[004] In particular, the compartment intended for storing foodstuffs? placed in a remote position compared to other components of the fridge (for example the compressor and the condenser).

[005] The compressor ? often installed inside a dedicated compartment (called ?engine room?) while the condenser ? placed outside the building in order to promote the heat exchange of the carrier fluid with the environment.

[006] In this case, therefore, ? is it possible to use the same compressor and the same condenser (or a battery of both) for a plurality? of display rooms located inside the supermarket.

[007] The main drawback of this solution consists in the fact that the passage of the refrigerant pipes in the building structure requires a considerable economic effort. In addition to this, the pipes have a fixed and predetermined installation which does not allow for the layout to be changed which is was originally followed for the installation of all the wardrobes.

[008] Furthermore, the quantity? of carrier fluid used for the operation of this type of refrigerated counter? quite high and not negligible.

[009] ? common, in fact, to use a quantity? of carrier fluid equal to a few hundred kilograms in order to promote the cooling of all the compartments located inside the supermarket.

[0010] Furthermore, to promote the circulation of the vector fluid between the components of the refrigerated counter and the refrigerated compartment? necessary to prepare a plurality? of pipes whose realization requires a high complexity?.

[0011] An alternative configuration of the refrigerated counters envisages the use of two different carrier fluids which circulate within isolated circuits installed in the same plant.

[0012] In particular, in the version of the so-called refrigerated counters ?indirect remote? ? the use of a first remote circuit is envisaged, consisting of a compressor, a condenser, an expansion valve and an evaporator inside which a preferably flammable carrier fluid circulates (propane or other similar gases).

[0013] And? a second circuit is also provided inside which a different vector fluid (preferably non-flammable) circulates. This second circuit? completely isolated from the first circuit but exchanges thermal energy with the latter through the evaporator.

[0014] The second circuit also comprises a heat exchanger located in correspondence with the refrigerated compartment. From the fluidic point of view, the carrier fluid preferably of the flammable type used in the first circuit has the function of absorbing heat from the second non-flammable fluid, thus to lower the temperature of the latter and promote cooling of the refrigerated compartment.

[0015] The first circuit also comprises a condenser placed outside the installation environment of the refrigerated counter.

[0016] The quantity? of carrier fluid, preferably of the flammable type used in this type of refrigerated counters ? significantly lower than the refrigerated cabinets described in the previous case.

[0017] However, even when it is not? required? installation of a plurality? of refrigerated compartments, the quantity? amount of flammable vector fluid is in any case consistent.

[0018] A further configuration of the refrigerated cabinets, called ?semi plug-in?, also provides for the creation of two separate circuits: the first circuit provides for the circulation of a carrier fluid preferably of the flammable type while a fluid circulates in the second circuit non-flammable type (usually water).

[0019] The first circuit includes a compressor, a condenser, an expansion valve (or similar lamination device) and an evaporator, the latter component ? fluidly associated with the refrigerated compartment.

[0020] In the second circuit does it provide instead ? isolated from the first circuit but exchanges heat with the latter at the condenser; the heat absorbed by the fluid in correspondence with this component is then disposed of outside the installation environment through the use of a chiller.

[0021] The purpose of the chiller? that of keeping the water which constitutes the second carrier fluid at a substantially constant temperature.

[0022] In this configuration of refrigerated cabinets, therefore, is the cooling of the compartment ? entrusted to the carrier fluid preferably of the flammable type and the main disadvantage of this solution consists in the fact that the quantity? of this fluid? however relatively high and not negligible.

[0023] In fact, while requiring a quantity overall amount of flammable carrier fluid lower than in the cases described above, is this the ?semi plug-in? still requires a quantity? relatively high amount of potentially flammable fluid, especially if the compartment to be cooled has large dimensions.

Presentation of the invention

[0024] The present invention intends to overcome the above mentioned technical drawbacks by making available a cabinet for the refrigeration, containment and sale of food products that is particularly effective and performing.

[0025] In particular, the main purpose of the present invention is that of providing a cabinet for the refrigeration and containment of food products capable of significantly reducing the quantity? of flammable carrier fluid used in the same.

[0026] A further object of the present invention? that of providing a cabinet for the refrigeration and containment of food products which has a higher level of safety than the configurations of refrigerated cabinets currently known on the market.

[0027] Another object of the present invention? that of making available a cabinet suitable for the refrigeration and containment of food products whose maintenance can largely be performed by an operator not qualified to handle gases and flammable substances (for example a plumber).

[0028] A further object of the present invention? that of providing a cabinet for the refrigeration and containment of food products which allows to minimize the intervention of a refrigeration operator or other professional qualified to handle gases and flammable substances.

[0029] Another object of the present invention? that of providing a cabinet for refrigerating and containing food products which is simple to make and has relatively low manufacturing and assembly costs.

[0030] Again, not the last aim of the present invention ? that of providing a cabinet for the refrigeration and containment of food products capable of confining the circuit comprising the flammable vector fluid in an autonomous and particularly safe compartment, however contained within the frame of the refrigerated compartment.

[0031] These aims, together with others which will be better clarified below, are achieved by a cabinet for refrigerating and containing food products of the type in accordance with claim 1.

[0032] Other objects which will be better described hereinafter are achieved by an in accordance with the dependent claims.

Brief description of the drawings

[0033] The advantages and characteristics of the present invention will clearly emerge from the following detailed description of some preferred but non-limiting configurations of a cabinet suitable for promoting the refrigeration and containment of food products with particular reference to the following drawings:

- Figure 1 comprises a block diagram of a cabinet for the; refrigeration and containment of food products according to the invention;

- Figure 2 ? a simplified sectional view of a cabinet for refrigerating and containing food products according to the invention.

Detailed description of the invention

[0034] The present invention relates to a cabinet suitable for promoting the refrigeration and containment of food products. This cabinet, hereinafter indicated with the reference number 1, can be suitable for promoting the containment and display of various types of food products P, whether fresh, and therefore intended for short-term consumption, or long or medium-life food products which, however, need to be constantly subjected to a lower temperature than ambient temperature.

[0035] Conveniently, the present cabinet 1 comprises a refrigerated compartment 2 intended to contain the food products P.

[0036] In particular, wardrobe 1 can include a support frame 2?provided with a plurality? of walls 2?? designed to define the refrigerated compartment 2.

[0037] One or more? of such walls 2?? can I be made of glass or other transparent material so as to allow the food products P contained inside the refrigerated compartment 2 to be seen from the outside.

[0038] Furthermore, one or more? walls 2?? delimiting the compartment 2 could be movable so as to allow access by a user to the food products P stored inside the compartment itself.

[0039] Furthermore, the support frame 2? can I be substantially self-supporting so as to be placed inside an installation space I intended for the sale and containment of food products P fresh or stored at a controlled temperature.

[0040] The conformation of the frame defining the wardrobe 1 can be such as to allow the installation of the latter in structures intended to promote the retail sale of food products.

[0041] For example, this cabinet 1 can be installed both in particularly large environments, such as supermarkets, hypermarkets, etc., and in small-sized environments such as small shops, delicatessens, bakeries, etc.

[0042] Conveniently, a single cabinet 1 can understand a plurality of refrigerated compartments 2 which can be fluidly communicating with each other or isolated, depending on the needs? of use of the wardrobe itself.

[0043] How will it be? better described below, in the event that more? refrigerated compartments 2 associated with the same cabinet 1, the constructive configuration of the latter provides for the construction of a single cooling system, indicated in the Figures with the reference number 3, able to promote the extraction of heat from each single compartment 2 in so as to keep it at a temperature equal to or close to the reference temperature (typically between 0?C and 10?C).

[0044] Figure 1 shows a block diagram of a cabinet 1 object of the present invention.

[0045] In particular, the cooling system 3 comprises a first circuit 4 able to promote the circulation of a first carrier fluid 5.

[0046] The first circuit 4 ? fluidically associated with the refrigerated compartment 2 so as to promote its cooling to a predetermined temperature.

[0047] The temperature inside compartment 2 can be set selectively by the user, the purpose of the first circuit 4 ? that of maintaining the temperature T inside said compartment 2 at a value equal to or close to a reference Tref set by the operator.

[0048] As better illustrated in Figure 1, the first circuit 4 can comprise a series of pipes, globally indicated with the reference number 6, and a pump 7 fluidly associated with these pipes 6 so as to promote the selective circulation of the first carrier fluid 5 inside the first circuit 4.

[0049] The first circuit 4 comprises a first heat exchanger 8 operatively associated with the compartment 2 to be cooled and placed in series with the respective pump 7.

[0050] The first exchanger 8 can present predetermined dimensions and dimensions defining a capacity? thermal C8 suitable for guaranteeing the transfer of the heat present inside the compartment 5 towards the first carrier fluid 5 in order to keep the compartment 2 itself at the predetermined temperature Tref.

[0051] Is the temperature T5 of the first vector fluid 5 at the inlet 9 of the first exchanger 8 found to be lower than the temperature T5? assumed by the same carrier fluid 5 at the outlet 10 of the first exchanger 8.

[0052] The first exchanger 8 can be selected from the group comprising shell and tube heat exchangers or similar.

[0053] Conveniently, the first carrier fluid 5 can be selected from the group comprising non-flammable carrier fluids.

[0054] For example, the first carrier fluid 5 can consist of water or water and glycol.

[0055] the first carrier fluid 5 can also be other than water; however, in the configuration of the cabinet 1 described here it is in any case understood that this first fluid 5 will be? always of the non-flammable type.

[0056] Therefore, the pipes 6 of the first circuit 4, the pump 7, and the first exchanger 8 are calculated in such a way as to allow the selective circulation of a given water flow rate during the operation of the cabinet 1.

[0057] The cooling system 3 comprises a second circuit 11 suitable for promoting the circulation of a second carrier fluid 12.

[0058] The second circuit 11 ? fluidly associated with an environment A external to the installation environment I of cabinet 1.

[0059] the purpose of the second circuit 11 ? that of promoting the disposal in the external environment A of at least a part of the heat Q absorbed by the first vector fluid 5 in correspondence with the refrigerated compartment 2.

[0060] In general, with the expression ?external environment? does it indicate an environment A located outside building I or the structure in which ? cabinet 1 installed.

[0061] And? it is in fact common in the sector to promote the dissipation of the heat Q previously extracted from the refrigerated compartment (or compartments) 2 towards the outside so as to prevent this heat Q from causing the heating of the installation environment I in which ? placed wardrobe 1.

[0062] This aspect? particularly important if within the same installation environment (supermarkets, hypermarkets, etc.) more? cabinets 1; in this case, in fact, the heat Q extracted from each compartment 2 would be released inside the installation environment I, causing it to heat up in a relatively short time.

[0063] The second circuit 11 will be able comprise a series of pipes 13 associated with a respective pump 14.

[0064] The selective actuation of the pump 14 will promote? the controlled circulation of the second vector fluid 12 inside the pipes 13.

[0065] The second circuit 11 will be able comprise a second heat exchanger 15, placed in series with the respective pump 14 and associated with the external environment A.

[0066] In this case, the second heat exchanger 15 will be placed directly in contact with the air present outside the building or structure.

[0067] The second exchanger 15 will be therefore configured to promote heat exchange between the second vector fluid 12 and the air present outside the installation environment I.

[0068] Conveniently, the dimensions and overall dimensions of the second exchanger 15 will be chosen so as to ensure a certain capacity? temperature C15 such as to allow the dissipation towards the outside A of the heat Q absorbed by the second carrier fluid 12 (coming from the refrigerated compartment 2) or of the heat Q? obtained as the sum of the heat Q absorbed by the second carrier fluid 12 (coming from the refrigerated compartment 2) and the heat Q?? developed by the other components (for example a compressor associated with a different circuit) during the operation of cabinet 1 (Q? = Q Q??).

[0069] Is the temperature T12 of the second vector fluid 12 entering the second exchanger 15 found to be higher than the temperature T12? assumed by the same carrier fluid 12 at the outlet of the second exchanger 15.

[0070] Suitably the second carrier fluid 12 can be selected from the group comprising non-flammable carrier fluids.

[0071] For example, the second carrier fluid 12 could consist of water.

[0072] The second vector fluid 12 can also be other than water; however, in the configuration of cabinet 1 described here it is in any case understood that this fluid will be? always of the non-flammable type.

[0073] In this case, the pipes 13 of the second circuit 11, the pump 14, and the second heat exchanger 15 are calculated in such a way as to allow the selective circulation of a given water flow rate during the operation of the cabinet 1 .

[0074] According to a peculiar configuration of the invention, the cooling system 3 comprises a third circuit 16 intended to promote the circulation of the third carrier fluid 17.

[0075] As better illustrated in Figure 1, the third circuit 16 ? fluidly interposed between the first circuit 4 and the second circuit 11.

[0076] The function of the third circuit 16 ? that of promoting the heat exchange between the third vector fluid 17 which circulates inside the latter and, respectively, the first 5 and second vector fluid 12 which circulate, respectively, inside the first circuit 4 and the second circuit 11.

[0077] The third circuit 16 ? isolated with respect to the first circuit 4 and the second circuit 11, substantially the third vector fluid 17 never comes into contact with the first vector fluid 5 and/or the second vector fluid 12.

[0078] Furthermore, between the first 4 and the second circuit 11 ? interposed the third circuit 16; therefore, not even the second carrier fluid 12 comes into contact with the third carrier fluid 17.

[0079] The first circuit 4, the second circuit 11, and the third circuit 16 are fluidically isolated from each other.

[0080] However, these circuits 4, 11, 16 are capable of promoting a heat exchange between the fluids 5, 12, 17 which circulate inside them.

[0081] The configuration of the first circuit 4, of the second circuit 11 and of the third circuit 16 are such as to allow only the transfer of heat between the three carrier fluids 5, 12, 17.

[0082] In particular, how will it be? better explained below, the interaction between the three circuits 4, 11, 16 will be? such as to promote the transfer of thermal energy from the first vector fluid 5 to the third vector fluid 17.

[0083] Similarly, the interaction between the circuits 4, 11, 16 will be? such as to promote the transfer of thermal energy from the third vector fluid 17 to the second vector fluid 12.

[0084] The third circuit 16 can include a compressor 18 placed upstream of a condenser 19 connected in turn to an expansion valve 20. possibly be replaced by an equivalent lamination member 20 (for example a capillary tube) and will be? connected in series to an evaporator 21 whose outlet 22 ? connected to compressor 18.

[0085] The third circuit 16 will be designed to subject the third vector fluid 17 to a thermal cycle, of the refrigerating type.

[0086] The third carrier fluid 17, therefore, must be chosen from among the group of fluids suitable for undergoing chemical-physical transformations such as to allow the execution of a refrigeration cycle.

[0087] In particular, the operation of the compressor 18 will promote? the pressure increase of the third carrier fluid 17 (in gaseous state), so? to increase its temperature.

[0088] The compressed gas then travels through the condenser 19 so? to release heat towards the outside and, consequently, allow the third carrier fluid 17 to carry out a change of state in the liquid phase.

[0089] At this point, through the actuation of the expansion valve 20 (or other throttling member) ? It is possible to reduce the pressure associated with the third carrier fluid 17 so as to decrease its temperature.

[0090] In the evaporator 21 a transition of state of the third fluid 17 takes place from the gaseous/liquid phase (present downstream of the throttling valve 20) to the gaseous phase.

[0091] The third carrier 17 at the outlet 22 from the evaporator 21 is again conveyed to the compressor 18.

[0092] The first circuit 4 interacts fluidly with the third circuit 16 at the evaporator 21 present in the latter.

[0093] Similarly, the second circuit 11 interacts fluidly with the third circuit 16 through the capacitor 19 present in the latter.

[0094] There? therefore a first transfer of heat Q from the first carrier fluid 5 (at the outlet 10 of the first exchanger 8) to the third carrier fluid 17; this thermal transfer takes place, as mentioned, in correspondence with the evaporator 21.

[0095] To this end, the first circuit 4 can comprise an additional heat exchanger 23 placed in fluid contact with the evaporator 21 of the third circuit 16.

[0096] The purpose of the additional exchanger 23 ? to promote the transfer of a certain amount? of thermal energy Q from the first vector fluid 5 towards the third vector fluid 17 circulating inside the evaporator 21.

[0097] Following this transfer, the temperature T5?? associated with the first carrier fluid 5 at the outlet 24 to the additional heat exchanger 23 ? lower than the T5 temperature? assumed by the same fluid at the inlet 25 to this component 23.

[0098] In substance, the thermal energy Q absorbed by the first fluid 5 during the passage in the first exchanger 8 is substantially disposed towards the third carrier fluid 17 through the passage in the additional heat exchanger 23.

[0099] In this way, the temperature T5 of the first fluid 5 at the inlet 9 of the first exchanger 8 remains substantially constant during normal operation of cabinet 1 (with the same cooling temperature Tref set inside compartment 2) .

[00100] Furthermore, ? a second heat transfer Q is provided from the third vector fluid 17 to the second vector fluid 5 (outlet 26 to the second heat exchanger 15); this heat transfer takes place, as mentioned, in correspondence with the condenser 19.

[00101] To this end, the second circuit 11 can also comprise an additional heat exchanger 27 placed in fluid contact with the condenser 19 associated with the third circuit 16.

[00102] The purpose of this additional exchanger 27 ? to promote the transfer of a certain amount? of thermal energy Q; Q? associated by the third carrier fluid 17 (circulating inside the condenser 19) to the second carrier fluid 12.

[00103] Following this heat transfer, the temperature T12 associated with the second carrier fluid 12 at the outlet 28 of the additional heat exchanger 27 ? greater than the T12 temperature? that the same fluid has at the inlet 26 of the additional heat exchanger 27.

[00104] In substance, the thermal energy Q; Q? dissipated by the second fluid 12 during its passage through the second exchanger 15 (generally placed outside the installation environment I) ? substantially equal to the thermal energy Q, Q? absorbed by the same fluid 12 through its passage in the additional heat exchanger 27.

[00105] In other words, the second fluid 12 undergoes heating due to the heat absorbed by the condenser 19 associated with the third circuit 16.

[00106] In this way, the temperature T12? of the second fluid 12 at the outlet of the second exchanger 15 remains substantially constant during normal operation of the cabinet 1 (with the same cooling temperature Tref set inside the compartment).

[00107] Suitably, at least one of the first vector fluid 5, the second vector fluid 12 and the third vector fluid 17 will be different from the others.

[00108] In particular, the third carrier fluid 17 can be selected from within the group comprising flammable fluids.

[00109] For example, the third carrier fluid 17 can be selected from the group comprising natural refrigerants based on ethane and/or propane and/or butane and/or based on other similar flammable gases.

[00110] In general, the third carrier fluid 17 can be of the type R90, R290, R170, R600, etc.

[00111] How already? described previously, in the configuration of cabinet 1 illustrated in the diagram of Figure 1, the first 5 and the second carrier fluid 12 may be water (or water-based liquids) while the third carrier fluid 17 may be be of the type indicated above.

[00112] The use of a potentially flammable third carrier fluid 17 suggests the use of particular components able to define both the additional exchangers 23, 27 associated with the first 4 and second circuit 11 and the condenser 19 and the evaporator 21 associated with the third circuit 16.

[00113] The evaporator 21 associated with the third circuit 16 and the additional heat exchanger 23 associated with the first circuit 4 can both be made using a single exchanger component 29.

[00114] This component 29 will be? provided with a pair of ducts (or series of ducts) 30, 31 which are fluidically isolated but at the same time configured to promote in any case a heat exchange.

[00115] One of these ducts 30 ? fluidly associated with the first circuit 4 cos? to allow circulation of the first vector fluid 5. In this case, therefore, this duct 30 forms the additional heat exchanger 23 associated with the first circuit 4.

[00116] The other duct 31 of this exchanger component 29 ? instead associated with the third circuit 16 cos? to allow the circulation of the third carrier fluid 17. In this case, therefore, this duct 31 ? configured to define evaporator 21.

[00117] In a similar manner to what has just been described, the condenser 19 associated with the third circuit 16 and the additional heat exchanger 27 associated with the second circuit 11 can both be made with a (further) single exchanger component 32.

[00118] This component 32 will be? also provided with a pair of ducts (or series of ducts) 33, 34 which are fluidically isolated but at the same time configured to allow reciprocal heat exchange.

[00119] One of these ducts 33 ? fluidly associated with the third circuit 16 cos? to allow the circulation of the third vector fluid 17. In this case, therefore, this duct 33 ? configured to define capacitor 19.

[00120] The other duct 34 of this exchanger component 32 ? instead associated with the second circuit 11 cos? to allow the circulation of the second vector fluid 12. In this case, therefore, this duct 34 forms the additional heat exchanger 27 associated with the second circuit 11.

[00121] Preferably, the exchanger components 29, 32 described above can be made by means of a pair of two-circuit plate exchangers, of the type per se? known and not described below.

[00122] Thanks to the configuration described above and the use of plate heat exchangers 29, 32, ? possible to minimize the extension of the third circuit 16.

[00123] The substantial miniaturization of the third circuit 11 allows to use a reduced quantity of the third vector fluid 17 which, as already? previously described, ? chosen from within the group comprising flammable fluids.

[00124] This aspect is decisive for increasing the overall safety of the cabinet for refrigerating food products object of the present invention. Furthermore, the particular configuration of the cabinet described above allows the third circuit to be confined within a dedicated space 35 formed in the frame.

[00125] This compartment? clearly visible in the sectional cabinet illustrated in Figure 2.

[00126] This space 35 can? be delimited by walls 36 specifically made of metal having a relatively high thickness (for example 5mm ? 10mm) so to be defined as a closed, isolated and safe compartment inside which? contained all the potentially flammable third carrier fluid.

[00127] Thanks to the small overall dimensions of the third circuit 16 ? Is it possible to make a cabinet 1 which has a high degree of flexibility? in the location of the space/compartment containing the third carrier fluid 17.

[00128] This space/compartment, in fact, can be placed above the refrigerated compartment 2 or, alternatively, next to it so? to allow a specialized operator to intervene with extreme ease? in any maintenance operations involving the third circuit and/or the third carrier fluid.

[00129] The present invention ? feasible in other variants, all falling within the scope of the claimed and described inventive characteristics; these technical characteristics can be replaced by various technically equivalent elements and the materials used; the shapes and dimensions of the invention can be any as long as? compatible with its use.

[00130] The reference numbers and signs inserted in the claims and in the description have the sole purpose of increasing the clarity of the text and must not be considered as elements that limit the technical interpretation of the objects or processes identified by them.

Claims (15)

1. A cabinet for the refrigeration and containment of food products (P), comprising: - at least one refrigerated compartment (2); - a system (3) able to promote the cooling of said at least one refrigerated compartment (2); wherein said system (3) comprises: - a first circuit (4) able to promote the circulation of a first vector fluid (5), said first circuit (4) being fluidically associated with said compartment (2) to absorb the heat (Q) present inside this? last and promote its cooling to a predetermined temperature (Tref); - a second circuit (11) able to promote the circulation of a second vector fluid (12), said second circuit (11) being fluidically associated with an external environment (A) to promote the disposal of at least a part of the heat (Q) absorbed by said first fluid (5) inside said compartment (2); characterized in that it comprises a third circuit (16) adapted to promote the circulation of a third carrier fluid (17), said third circuit (16) being fluidically interposed between said first circuit (4) and said second circuit (11) so to promote heat exchange (Q) between said third vector fluid (17) and said first (5) and said second vector fluid (12). 2. Display cabinet according to claim 1, characterized in that said first circuit (4), said second circuit (11) and said third circuit (16) are closed and fluidically isolated from each other. 3. Cabinet according to claim 1 or 2, characterized in that said first (5) and/or said second carrier fluid (12) ? other than said third carrier fluid (17). 4. Cabinet according to claim 3, characterized in that said first carrier fluid (5) is selected from the group comprising non-flammable carrier fluids. 5. Cabinet according to claim 3 or 4, characterized in that said second vector fluid (12) is selected from the group comprising non-flammable carrier fluids. 6. Cabinet according to any claim from 3 to 5, characterized in that said third vector fluid (17) is selected from the group comprising flammable carrier fluids. 7. Cabinet according to any claim from 3 to 6, characterized in that said first (5) and said second carrier fluid (12) are selected from the group comprising water and/or non-flammable glycol-based substances, said third carrier fluid (17) being selected from the group include natural propane-based refrigerants. 8. Wardrobe according to one or more? of the preceding claims, characterized in that said first circuit (4) and said second circuit (11) comprise respective pumps (7, 14) able to promote the circulation of said first (5) and said carrier fluid (12). 9. Cabinet according to claim 8, characterized in that said first circuit (4) comprises a first heat exchanger (8) associated with said refrigerated compartment (2) and said second circuit (11) comprises a second heat exchanger (15 ) associated with the external environment (A), said first (8) and said second heat exchanger (15) being fluidically placed in series with the respective pump (4, 17) of said first (4) and said second circuit (11 ). 10. Wardrobe according to one or more? of the preceding claims, characterized in that said third circuit (16) comprises at least one compressor (18), a condenser (19), a lamination member (20) and an evaporator (21), said condenser (19) being placed at downstream of said compressor (18), said lamination member (20) being placed downstream of said condenser (19), said evaporator (21) being placed downstream of said lamination member (20) and upstream of said compressor (18 ). 11. Cabinet according to claim 10, characterized in that said first circuit (4) comprises an additional heat exchanger (23) placed fluidically in contact with the evaporator (21) of said third circuit (16), said heat exchanger additional fluid (23) being able to promote heat exchange (Q) with said evaporator (21) so as to promote the cooling of said first carrier fluid (5) leaving said first exchanger (8) and the consequent heating of said third carrier fluid (17). 12. Cabinet according to claim 11, characterized in that said evaporator (21) of said third circuit (16) and said additional heat exchanger (23) of said first circuit (4) are both made with a single exchanger element (29 ) provided with a pair of insulated ducts (30, 31) among which ? heat exchange is provided, one of said ducts (30) being able to promote the circulation of said first carrier fluid (5) and the other of said ducts (31) being able to promote the circulation of said second carrier fluid (17) . 13. Cabinet according to claim 10, characterized in that said second circuit (11) comprises an additional heat exchanger (27) placed fluidically in contact with the condenser (19) of said third circuit (16), said additional heat exchanger (27) being capable of promoting heat exchange (Q) with said condenser (19) so as to promote cooling of said third carrier fluid (17) downstream of said compressor (18) and heating of said second carrier fluid ( 12). 14. Cabinet according to claim 11, characterized in that said condenser (19) of said third circuit (16) and said additional heat exchanger (27) of said second circuit (11) are both made with a single exchanger element (32 ) provided with a pair of insulated ducts (33, 34) among which ? heat exchange is provided, one of said ducts (33) being able to promote the circulation of the third vector fluid (17) and the other of said ducts (34) being able to promote the circulation of said second vector fluid (12). 15. Cabinet according to claim 14, characterized in that said exchanger elements (29, 32) are selected from the group comprising plate heat exchangers or the like.