FR3007618A1 - OUTDOOR CABINET WITH AERAULIC REFRESH - Google Patents

Abstract

Outdoor cabinet with air cooling. The invention relates to an outdoor cabinet (1) comprising a bottom (3), a ceiling (4), a first and a second front (5, 6), an inlet louver (12) and a louvre. extraction (13), said cabinet (1) being characterized in that said intake port (12) is provided exclusively either through the first facade (5) and near the bottom (3), or through the bottom (3) and in the vicinity of the first facade (5), or through both the bottom (3) and the first facade (5) and in the vicinity of the interface between the bottom (3) and the first facade ( 5), while the extraction opening (13) is provided exclusively either through the second facade (6) and in the vicinity of the ceiling (4), or through the ceiling (4) and in the vicinity of the second facade (6), or through both the ceiling (4) and the second facade (6) and in the vicinity of the interface between the ceiling (4) and the second facade (6). Outdoor cabinets for electrical and / or electronic and / or telecommunication equipment.

Description

The present invention relates to the general technical field of outdoor cabinets intended to house electrical and / or electronic and / or telecommunication equipment, whether this equipment is of a passive nature (distribution panels for example). ) and / or active (router, digital recorder, electronic traffic light management interface, media converters, radio equipment, switch, etc.). The present invention relates more particularly to an outdoor cabinet intended to house electrical and / or electronic and / or telecommunication equipment, said cabinet comprising an envelope which contributes to delimiting a receiving compartment of said equipment and which comprises for this purpose a bottom, a ceiling and at least a first and a second facade rising vertically opposite and at a distance from each other between said bottom and ceiling, said cabinet further comprising at least one intake opening allowing the external air intake within the cabinet and an extraction hole allowing the air in the compartment to escape from the latter, so as to thereby establish an air flow between said gills; admission and extraction. Telecommunication cabinets intended to be installed outdoors to house passive or active equipment are well known. Because of their use outdoors, these known cabinets are directly subject to ambient climate conditions. This implies in particular that these known cabinets are exposed, usually directly to solar radiation, which is likely to generate inside the cabinet heating may be important. Such heating, if not controlled, may be likely to affect the operation, or even the integrity, of the material housed within the cabinet, especially when this material is an active material (ie powered in electrical energy). It is all the more important, in the latter case, to control and limit the thermal heating resulting from the solar radiation that the active material releases itself in operation of the thermal energy which is added to that resulting solar radiation. 8/3768 / FR 11 It is therefore known to equip these telecom cabinets with fans designed to generate a cooling air current within the cabinet, which makes it possible to avoid excessive heating of the equipment housed in the cabinet. In particular, there are known cabinets whose back is provided with fans for establishing, in cooperation with openings through the wall of the cabinet, an air flow within the cabinet. Such a known arrangement, if it allows to control more or less effectively the heating in the cabinet, does not present less serious disadvantages. First, this known arrangement requires the implementation of a high ventilation power, which causes a significant energy consumption which has a negative impact on the operating cost of the cabinet. In addition, despite the implementation of this powerful ventilation, the cooling of the interior volume of the cabinet is relatively inhomogeneous and modest performance compared to the ventilation power implemented. In addition, these known cabinets turns out to be relatively noisy in operation, because of the noise produced by the fans equipping the cabinets in question. The objects assigned to the invention therefore aim to remedy the various disadvantages listed above and to propose a new outdoor cabinet intended to house electrical and / or electronic and / or telecommunication equipment capable of discharging to the outside. in a particularly efficient way the heat likely to be present within it, and this particularly noisy and very energy efficient. Another object of the invention is to propose a new outdoor cabinet intended to house electrical and / or electronic and / or telecommunication equipment whose design makes it possible to obtain a particularly uniform cooling of the interior of the cabinet. . Another object of the invention is to propose a new outdoor cabinet intended to house electrical and / or electronic and / or telecommunication equipment which optimally exploits the natural phenomena of air circulation to cool the air. inside the cabinet. Another object of the invention is to propose a new outdoor cabinet intended to house electrical and / or electronic and / or telecommunications equipment which is of particularly simple, robust and cheap construction. Another object of the invention is to propose a new outdoor cabinet intended to house electrical and / or electronic and / or telecommunication equipment which is particularly protective for the equipment in question. Another object of the invention is to propose a new outdoor cabinet intended to house electrical and / or electronic and / or telecommunication equipment whose design makes it possible to cool the interior of the cabinet extremely homogeneously and sustainable with very simple and inexpensive means. Another object of the invention is to propose a new outdoor cabinet intended to house electrical and / or electronic and / or telecommunication equipment whose design makes it possible to avoid localized stagnation of hot air pockets. Another object of the invention is to propose a new outdoor cabinet intended to house electrical and / or electronic and / or telecommunication equipment which, while being of particularly simple and scalable design, provides a cooling effect of the particularly powerful cabinet interior. Another object of the invention is to propose a new outdoor cabinet intended to house electrical and / or electronic and / or telecommunication equipment whose operation is particularly silent. Another object of the invention is to propose a new outdoor cabinet intended to house electrical and / or electronic and / or telecommunication equipment whose design makes it possible to carry out maintenance operations in a particularly simple and rapid manner. of repair. B13768 / FR The objects assigned to the invention are attained by means of an outdoor cabinet intended to house electrical and / or electronic and / or telecommunication equipment, said cabinet comprising an envelope which contributes to delimiting a compartment. of said equipment and which comprises for this purpose a bottom, a ceiling and at least a first and a second facade rising vertically opposite and at a distance from each other between said bottom and ceiling, said cabinet comprising in addition, at least one intake opening allowing outside air to be admitted into the cabinet and an extraction opening allowing the air present in the compartment to escape from the latter, so as to thus establishing an air flow between said intake and extraction openings, said cabinet being characterized in that said intake port is formed substantially exclusively either through the first facade and in the Inage of the bottom, either across the bottom and in the vicinity of the first facade, or across both the bottom and the first facade and in the vicinity of the interface between the bottom and the first facade, while the hearing extraction is made substantially exclusively either through the second facade and in the vicinity of the ceiling, or through the ceiling and in the vicinity of the second facade, or through both the ceiling and the second facade and in the vicinity of the interface between the ceiling and the second facade. Other features and advantages of the invention will appear and will appear in more detail on reading the description given below, with reference to the accompanying drawings, given for purely illustrative and non-limiting purposes, in which: - Figure 1 illustrates , in a general perspective view, an outdoor cabinet according to the invention. FIG. 2 illustrates, in a front view, the cabinet of FIG. 1; FIG. 3 illustrates, in a side view, the cabinet of FIGS. 1 and 2, with certain interior details represented in dashed lines. - Figure 4 illustrates, in a schematic side view in section, the operating principle of the cabinet of Figures 1 to 3, the air flow within the cabinet being marked by arrows. 1313768 / FR - Figure 5 illustrates, in a side view with some internal details shown in dashed lines, a subset formed by the removable assembly of a ventilation housing and a control unit for equipping the 1 to 4. FIG. 6 illustrates, in a partially exploded view, the cabinet of FIGS. 1 to 5. FIG. 7 illustrates, in a schematic perspective view, the elements of the subset of the Figure 5, with the control unit separate from said housing. - Figure 8 illustrates, in a schematic perspective view, the subassembly of Figure 5. - Figure 9 illustrates, in a schematic perspective view in front against a dive, a detail of the latter. FIG. 10 illustrates, in a diagrammatic perspective view, a detail of the cabinet of FIGS. 1 to 9. FIG. 11 illustrates, in a diagrammatic view in front of a plunging perspective, a detail of the cabinet of Figures 1 to 10, illustrating in particular the arrangement of the subassembly of Figure 8 within the cabinet. - Figure 12 illustrates, in a schematic front perspective plunging view, the cabinet of the previous figures without its doors, so that the interior of the cabinet is visible. - Figure 13 illustrates, in a schematic perspective view, an enlarged detail of Figure 12. The invention relates to an outdoor cabinet 1 for housing an electrical equipment and / or electronic and / or telecommunication. The cabinet 1 is therefore specifically designed to be installed in the open air, for example on public roads or in the countryside. The outdoor cabinet 1 is in particular intended to rest on a floor 7 (natural or artificial) which is preferably substantially flat, and which the cabinet is advantageously fixed by any appropriate means. B13768 / FR The outdoor cabinet 1 according to the invention is therefore specifically designed to withstand any weather (solar radiation, rain, hail, gel, etc.). For this purpose, the outdoor cabinet 1 is for example made of a metallic material, such as aluminum or steel. As mentioned above, the outdoor cabinet 1 is intended to house electrical and / or electronic and / or telecommunication equipment, ie it is designed to contain, preferably integrally, the equipment in question within it, in order to isolate it from the outside environment. Preferably, the outdoor cabinet 1 according to the invention is particularly designed to protect the aforementioned equipment from the weather, and in particular rain, moisture, snow, frost, wind, etc. . The outdoor cabinet 1 thus advantageously has a substantially sealed character, or at least impermeable. The outdoor cabinet 1 according to the invention can accommodate any type of electrical equipment and / or electronic and / or telecommunications. In particular, the outdoor cabinet 1 according to the invention is advantageously designed to house not only a passive type of equipment (that is to say that does not require a dedicated power supply to operate) such as a panel telecom distribution, but also a type of active equipment (ie which is supplied with energy, and in particular electrical energy, to function) such as a network switch, a roll, a digital recorder, a device radio, an electronic traffic light management interface, a media converter, etc. Preferably, the outdoor cabinet 1 is specifically designed to accommodate within it a telecommunication equipment that is part of a private or public telecommunication network. In this case, the outdoor cabinet 1 is advantageously an outdoor telecom cabinet.

In order to contain said aforementioned equipment, the cabinet 1 comprises an envelope which contributes (in particular) to delimit a receiving compartment 2 of said equipment. The envelope in question thus delimits, in particular, an interior volume intended to receive and contain the aforementioned equipment. For this purpose, the envelope comprises a bottom 3, a ceiling 4 and at least a first facade 5 and a second facade 6 rising vertically opposite and at a distance from one another between said bottom 3 and ceiling 4. In other words, the receiving compartment 2 extends vertically between the bottom 3 and the ceiling 4, the distance between said bottom 3 and ceiling 4 corresponding substantially to the height H of said home compartment 2. B13768 The first and second facades 5, 6 are arranged opposite one another and preferably extend substantially parallel to one another. Advantageously, the distance separating said first and second facades 5,6 substantially corresponds to the depth P of the cabinet 1, and therefore of the receiving compartment 2 (to the thickness near the panels forming the first and second facades 5, 6 ). The bottom 3 is preferably intended to extend substantially parallel to the ground 7 when the outdoor cabinet 1 is installed on said floor 7, and it is for example formed by a substantially rectangular horizontal panel. In the same way, the ceiling 4 is advantageously formed of a substantially rectangular panel which advantageously extends parallel to the bottom 3, in line with the latter. In this advantageous embodiment, which corresponds to the example illustrated in the figures, each of the horizontal rectangular panels respectively forming the bottom 3 and the ceiling 4 has two long sides and two small sides. In the example illustrated in the figures, in which the distance separating the first and second facades 5, 6 substantially corresponds to the depth P of the cabinet 1, the said first and second facades 5, 6 connect the said long sides of the rectangular panels respectively forming the bottom 3 and the ceiling 4, as illustrated in the figures. Advantageously, the cabinet 1 thus comprises on the one hand a front face formed by said first facade 5, said front face being equipped with at least one door 8, and in this case two doors 8, 9, allowing access to the interior of said reception compartment 2, and secondly a rear face formed by said second facade 6. Advantageously, said at least one door 8, 9 forms substantially the majority, if not almost all of the first front 5. In the example illustrated in the figures, said doors 8, 9 are swing doors pivotally mounted respectively in a vertical axis of rotation and a left vertical axis of rotation. In this advantageous embodiment, the envelope delimiting the receiving compartment 2 further comprises two lateral facades 10, 11 which rise vertically in front and at a distance from each other between said bottom 3 and ceiling 4 so as to connect said first and second facades 5, 6 together. In this case, each lateral facade 10, 11 is also in the form of a substantially rectangular panel which connects the short sides of the panels forming the B13768 / FR bottom 3 and the ceiling 4. According to this advantageous embodiment, the receiving compartment 2 is thus in the form of a substantially parallelepiped closed volume, delimited at the bottom by the bottom 3, at the top by the ceiling 4, in front of the first facade 5, behind the first facade 6, and on the right and left sides by the side walls 10, 11. In this case, the distance separating said side walls 10, 11 advantageously corresponds to the width L of the cabinet 1, and therefore substantially to the width of the receiving compartment 2 (to the thickness near the panels forming the side walls 10, 11). According to the invention, the cabinet 1 further comprises at least one intake opening 12 allowing the admission of outside air within the cabinet 1 and an extraction opening 13 allowing the air present in the the compartment 2 to escape out of the latter, so as to thereby establish an air flow between said intake port 12 and extraction 13. The inlet port 12 thus allows the air present in the environment of the cabinet 1 to enter the cabinet 1, then to win the inside of the compartment 2, then escape out of the latter by the extraction hole 13 and return to outside. This circulation of air is intended to operate a cooling of the interior of the compartment 2, to maintain the temperature prevailing within said compartment 2 below a predetermined level allowing the proper functioning of the equipment housed in the compartment 2. In other words, each of said inlet and extraction openings 13 contributes to placing the interior of the compartment 2 in communication with the outside of the envelope, so as to generate an air flow of the intake port 12 to the extraction port 13. According to the invention, the intake port 12 is formed substantially exclusively: - either through the first front 5 and the vicinity of the bottom 3 (as in l example shown in the figures); - either through the bottom 3 and in the vicinity of the first facade 5; - Or through both I ground 3 and the first facade 5, and in the vicinity of the interface (that is to say, the junction) between the bottom 3 and the first front 5. B137681FR In other In other words, the intake port 12 is disposed in a lower zone of the compartment 2, which is advantageously also a lower zone of the outdoor cabinet 1, so that the outside air entering the cabinet 1 by the intake port 12 is as close to the ground 7 as possible, to introduce into the cabinet 1 outside air that is as fresh as possible (the cold air has indeed tend to stagnate at the level of soil while warm air tends to rise). In addition, as explained in the foregoing, the inlet louver 12 is eccentric, inasmuch as it is disposed in the vicinity of the first facade 5 (which means in particular that the inlet louver 12 is more close to the first facade 5 than the second facade 6) or arranged directly through said first facade 5 (as in the example shown in the figures). This technical provision makes it possible, as will become more apparent from the following, to allow a very efficient scanning of the home compartment 2 to optimize the refresh of the latter. The intake of outside air within the cabinet 1 is thus made mainly, and in this case substantially exclusively by the intake port 12, the latter may for example include (as illustrated in the figures) one or two (or more) orifices 12A, 12B which are for example in the form of rectangular openings covering substantially the majority, if not almost all of the width L of the outdoor cabinet. Of course, as will become more apparent from the following, the intake port 12 is advantageously designed to communicate, directly or indirectly, with the interior of the compartment 2. As for the extraction port 13, it is formed substantially exclusively: either through the second facade 6 and in the vicinity of the ceiling 4; either through the ceiling 4 and in the vicinity of the second facade 6 (as in the example illustrated in the figures): either through both the ceiling 4 and the second facade 6 and in the vicinity of the interface (this is that is to say in the case of the junction) between the ceiling 4 and the second facade 6. In other words, the extraction hole 13 is disposed in an upper zone of the compartment 2 (and preferably 1), so that the heated air within the compartment 2 (under the effect of the thermal input from B13768 / FR example of solar radiation supplemented if necessary by the heat released by the equipment active compartment within compartment 2) will naturally tend, by chimney effect, to rise naturally from the intake port 12 to the extraction port 13. In addition, in order to to promote a particularly efficient scanning, in terms of heat transfer, of the compartment 2 by the air flow thus produced, the extraction hole 13 is also opposite the intake port 12 in the horizontal direction. Thus, the extraction hole 13 is arranged so as to be in the vicinity, preferably immediately, of the second facade 6, which means that said extraction hole 13 is arranged so as to be closer to the second one. front view 6 that of the first facade 5. It follows from the foregoing that the line of direct trajectory joining the intake port 12 to the extraction port 13 substantially corresponds in this case to a diagonal extending between a low front zone and a high rear zone of the compartment 2. With this arrangement of intake louvers 12 and extraction 13 in total geometric opposition, the air not only has a tendency to flow naturally from the inlet louver 12 to the intake port 13 (without the need for forced ventilation means) but it also follows a generally diagonal trajectory that allows it to stir and renew particularly effectively the air contained in the comparison welcome 2 thus limiting the possible appearance of stagnant pockets of hot air. In the example illustrated in the figures, the intake louver 12 is formed through the first facade 5, at the bottom of the latter (ie in the vicinity of the ground 7), while the extraction louver 13 is provided at through the ceiling 4, in the immediate vicinity of the second facade 6, said first and second facades 5, 6 being separated in this case by a distance corresponding to the depth P of the cabinet as previously discussed. Finally, in the example illustrated in the figures, the flow of air is advantageously generally from the front to the rear of the cabinet and from the bottom to the top of the cabinet 1, preferably respectively substantially all the depth P of the receiving compartment 2 and substantially the entire height H of said receiving compartment 2. It is however entirely possible, without departing from the scope of the invention, that the first and the second front 5, 6 are rather arranged so that the distance between them corresponds not to the depth P but the width L of the cabinet 1. B13768 / EN The implementation of a hearing of extraction 13 exclusively made through the ceiling 4 proves particularly advantageous insofar as in this case the extraction hole 13 is at the highest point of the compartment 2, which makes it possible to limit even more significantly the risk of to see appear a pocket of stagnant hot air within the compartment 2, in the vicinity of the ceiling 4. Advantageously, the extraction hole 13 preferably comprises at least one orifice 13A, and in this case two orifices 13A, 13B formed in this case exclusively to through the ceiling 4, at the rear of the latter (that is to say, in the immediate vicinity of the second facade 6). Preferably, each orifice 13A, 13B forming the extraction hole 13 is in geometric correspondence, in the horizontal plane, with respectively each orifice 12A, 12B formed through the first facade 5 at the bottom of the latter, to form the opening. 12. More specifically, said inlet and extraction openings 13 and 13 are advantageously arranged so that their respective orthogonal projections on the same horizontal plane extend substantially to the right of each other, that is to say substantially vis-à-vis. Preferably, as illustrated in the figures, the distance separating the respective orthogonal planes, on the same horizontal plane, from said intake and extraction openings 13 corresponds to the depth P of the cabinet 1, so as to ensure that the circulation of air sweeps the compartment 2 over the entire depth of the latter. Advantageously, the inlet louver 12 and the extraction louver 13 are also arranged so that their respective orthogonal projections on the same vertical plane, and in particular on the same vertical plane substantially parallel to the first and second façades 5, 6 , Of course extend substantially to the right of each other while being advantageously separated by a distance corresponding substantially to the height H of the compartment 2, with the orthogonal projection of the inlet louvre 12 located under the Projected orthogonal extraction hearing 13. Grade to these different technical provisions, it is possible to obtain a flow of air in the form of one or more air knives that lick the compartment 2 and thus limit the formation of stagnant pockets of hot air. In particular, it is particularly advantageous to use an extraction opening 13 which has an elongated shape and extends through and at the rear of the ceiling 4 over a significant fraction of the width L of the cabinet 1 for example at least 50%, even more preferably at least 60% or even at least 80% of said width L. In the same way, the intake port 12 also advantageously along a significant fraction of the width L of the cabinet 1, for example at least 50%, and still more preferably at least 60%, even more preferably at least 80%, or even at least 90% , of said width L.

Of course, as explained above, it is perfectly conceivable that each of the extraction openings 13 and intake 12 is formed by the meeting of different distinct orifices 13A, 13B, 12A, 12B which extend in the continuity of other, as can be seen for example in FIG. 6. Advantageously, the first facade 5 comprises a lower front band 14 which extends under the said at least one door 8, and in this case under the said doors 8, 9, in the extension vertical of the latter, said intake port 12 (including in the example illustrated in the figures the orifices 12A, 12B) being formed in this case through said lower front band 14. The inlet louver 12 can of course exclusively in said lower front band 14. In the present case, the lower front band 14 is for example in the form of an elongated vertical panel which extends horizontally over the entire width L of the cabinet and rises vertically between a lower edge intended to come into contact with the ground 7 and an upper edge which is flush with the lower edge of the doors 8, 9. Advantageously, the bottom 3 extends substantially horizontally and remotely the floor 7 on which is intended to rest said cabinet 1, so as to provide under said bottom 3 an interstitial space 15 that said lower front panel 14 also contributes in this case to delimit, so that said intake port 12 communicates said interstitial space with the outside. Preferably, the cabinet 1 advantageously comprises a base 16, which includes for example: a bottom wall 16A (optional), which preferably extends substantially horizontally and is intended to rest directly on the ground 7; for example, said bottom wall 16A is in the form of a substantially rectangular horizontal panel of depth P and width L; B13768 / FR - a side wall which rises from and on the periphery of said bottom wall 16A and which is advantageously formed of a front panel formed in this case by the lower front panel 14, a back panel 16B which extends substantially parallel to said lower front panel 14, and two side closure panels 16C, 16D and an upper panel which extends substantially parallel to the bottom wall 16A and which is preferably formed as shown in FIGS. FIGS., by the bottom 3. The base 16 (which is entirely optional) is thus a hollow base which delimits a closed interior volume corresponding to the interstitial space 15 referred to above. In this embodiment, the intake port 12 makes it possible to bring ambient ambient air to the cabinet 1 into the interstitial space 15, within the base 16. Advantageously, the cabinet 1 also comprises, as illustrated in the figures, an intermediate hole 17 formed through said bottom 3 to allow the air admitted into the interstitial space 15 through the intake port 12 to then enter the compartment 2. The intermediate hearing 17 thus ensures, in the preferred embodiment illustrated in the figures, the placing in communication of the interior of the compartment 2 with the interstitial space 15 formed in the base 16. The inlet port 12 is therefore in this case communicating with the compartment 2 through the interstitial space 15 and the intermediate hearing 17. Advantageously, the intermediate hearing 17 is itself formed in the immediate vicinity of the first facade 5, so as to be substantially ad underlying the latter as illustrated in particular by Figure 4. This means that the intermediate hearing 17 is disposed near the junction between the first facade 5 and the bottom 3, that is to say that it is closer to the first facade 5 than the second facade 6, and is advantageously in the immediate vicinity of said first facade 5 as illustrated in Figure 4 for example. The outside air can thus penetrate into the interstitial space 15 via the intake port 12 and then pass through the intermediate port 17, the bottom 3 and circulate within the compartment 2 to the seat of the chamber. Extraction 13. Thus, the outside air is admitted into the compartment 2 through the cooperation of the intermediate hearing 17 and the hearing of admission 12. In this respect, it would be conceivable to consider by convention that the hearing intermediate 17 is part of a certain way of hearing admission 12. In this case, the inlet louver 12 would extend both through the bottom 3 and the first facade 5 and in the vicinity of l interface between the bottom 3 and the first front 5. Advantageously, the intermediate hearing 17 is arranged in correspondence with the inlet louver 12, that is to say that the orthogonal projections respectively of the intermediate hearing and intake hearing 12 on the same horizontal plane extend sensiblemen at right angles to one another and are separated by a minimum distance (for example less than 30% of the depth P, and preferably less than 20% or even less than 10% of said depth P), even substantially non-existent. Preferably, the intermediate lug 17 is in the form of one or more orifices 18, 19 whose shape is similar to that of the orifices 12A, 12B forming the inlet louver 12, and which extend opposite each of said orifices 12A, 12B substantially parallel to and throughout the length thereof. Advantageously, the cabinet 1 comprises a filter that equips said intermediate hole 17 so that the outside air entering the compartment 2, where the telecommunication equipment is housed, has a sufficient level of cleanliness. As explained in the foregoing, the extraction opening 13 is advantageously arranged through the ceiling 4, and preferably exclusively through said ceiling 4, in the immediate vicinity of the second facade 6. Thus, the circulating air within the compartment 2, from the intake port 12, escapes out of said compartment 2 by the extraction port 13. It is then possible that the air passing through the extraction port 13 is found directly outside the cabinet 1, the ceiling 4 forming in this case directly the roof of the cabinet 1. It is however preferable, in accordance with the embodiment illustrated in the figures, that the cabinet 1 comprises a discharge opening 20 formed through the first facade 5, preferably in the vicinity of said ceiling 4, in this case towards the front end of the latter (that is to say near the junction between the ceiling 4 and the first facade 5), said sockets extraction 13 and delivery 20 being placed in aeraulic communication so that the air escaping from said compartment 2 by said extraction hole 13 is then rejected outside the cabinet 1 by said outlet port 20. Thus , the cabinet 1 is designed to channel the air escaping through the extraction hole 13 to the discharge port 20, which advantageously opens directly to the outside, for example at the face Before the cabinet 1. In this case, the cabinet 1 advantageously comprises a roof box disposed at the top of said cabinet 1, preferably on the ceiling 4. B / 3768 / FR The roof box in question comprises for example a lower partition formed in this case by the ceiling 4 and an upper partition which extends substantially parallel (that is to say in this case horizontally) and remote from said ceiling 4 to form the roof 21 of the cabinet 1. Ceiling 4 and roof 21 are interconnected by r a side wall comprising: - an upper front band 22 which extends over the entire width L of the cabinet 1 and is part of the first facade 5; - an upper dorsal strip 23 which is advantageously part of the second facade 6; - And two upper lateral bands 24, 25 which laterally close the box, in the continuity of the side walls 10, 11. The roof box thus delimits a closed chamber 26 which communicates on the one hand with the compartment 2 by means of the extraction opening 13 and on the other hand with the outside via the discharge port 20, which is advantageously formed through the upper frontal band 22. The air escaping from the compartment 2 by the extraction hole 13 thus enters the chamber 26 within which it circulates to then reach the outside via the discharge port 20. Advantageously, said discharge port 20 is oriented so that the air escapes out of the cabinet 1 by said discharge port 20 at an oblique incidence XX 'directed downwards, in order to stir the ambient outside air in front of the first facade 5. In other words, the hearing of repression 20 is available so that the air is expelled out of the cabinet 1 obliquely and downwards, in front of the front face of the cabinet 1, which proves particularly advantageous by making it possible to promote turbulence phenomena in the right and close to the first facade 5, thereby limiting the formation of stagnant air pockets at and to the right of the inlet louver 12. To this end, the upper headband 22, through which is provided outlet port 20, advantageously has a downwardly inclined section, for example at an angle of at least 30 °, and even more preferably at least 45 ° with the vertical. B13768 / EN This technical provision for oblique air return to the front of the cabinet 1 contributes significantly to the efficiency of the cabinet I for cooling by air circulation. Advantageously, the discharge port 20 extends along the upper frontal band 22, so as to be substantially in correspondence with the intake port 12, the intermediate port 17 and the extraction port 13. This means in particular that the respective orthogonal projections of said aforesaid gills on the same horizontal plane extend substantially to the right (ie vis-à-vis) of each other.

In the example illustrated in the figures, the discharge orifice 20 is thus formed of two substantially rectangular orifices which advantageously extend over at least a majority fraction of the width L of the cabinet, and even more preferably according to FIG. minus 60%, and particularly advantageously in at least 80%, or even 90%, of the width L of the cabinet 1 (as illustrated in particular by Figure 2). In order to obtain an efficient flow of air within the compartment 2, with in particular an optimum flow, the extraction opening 13 defines a passage section which is advantageously substantially greater than the passage section defined by the hearing. 12, to take into account the expansion of the air resulting from its heating in the cabinet 1. For the same reason, the passage section defined by the intermediate hearing 17 is substantially greater than the section passage defined by the intake port 12, while the passage section defined by the extraction port 13 is itself substantially greater than the passage section defined by the intermediate hearing 17, while the section passage defined by the discharge port 20 is finally substantially greater than the passage section defined by the extraction port 13. Advantageously, in order to amplify the natural phenomenon of air circulation obtained by the disp Specific geometrical osition of inlet openings 12 and extraction 13 exposed in the foregoing, the cabinet 1 comprises an air driver 27 mounted within the cabinet 1 so as to establish a circulation of forced air between the intake port 12 and the extraction port 13. B13768 / FR Preferably, the air entrainment device 27 is mounted in aeraulic communication with the extraction orifice 13, in order to aspirate the air present in said compartment 2 by said extraction hole 13 and thus establish a forced air circulation between said inlet and extraction ports 13 by generating a depression within the compartment 2. For this purpose , the air entrainment device 27 advantageously comprises an air inlet 27B and an air outlet 27C between which is interposed a movable member 27A, such as a ventilation wheel, intended to set in motion the air between said air inlet and outlet 27B, 27C. Preferably, said air inlet 27B is confined to the extraction opening 13, downstream of the latter in the direction of the air flow. In the preferred embodiment illustrated in the figures, said air entrainment device 27 is also mounted in aeraulic communication with said delivery port 20 in order to discharge the air sucked into said compartment 2 by said delivery port 20. In this preferred embodiment, said air outlet 27C advantageously communicates with the discharge port 20. The forced air circulation thus obtained allows the air to enter through the intake port 12 into the base 16 to then cross the bottom 3 and enter the compartment 2 and then join, by sweeping the compartment 2, the extraction hole 13 to then enter through the air inlet 27B in the air entrainment device 27 and undergo the setting in motion operated by the ventilation wheel 27A to then be discharged by the air outlet 27C and circulate within the chamber 26 to the discharge port 20 finally allowing the air in question to join the outside being propelled in a direction of discharge X-X 'oblique downward. Advantageously, said air entrainment device 27 comprises a fan, and preferably a tangential fan. The specific configuration of the various gills exposed in the foregoing authorizes the use of such a tangential fan, which comprises a ventilation wheel 27A disposed within a volute 27D with the axis of rotation of said ventilation wheel 27A which extends substantially in the direction of the width L of the cabinet 1. The volute 27D is for example oriented to collect the air from the compartment 2 at the rear of the cabinet 1 to project it to the before the latter, as shown in particular in Figure 4. The implementation of a tangential fan is particularly advantageous in terms of B13768 / FR operating comfort, inasmuch as the tangential fans are much less noisy than other types of fans (such as a fan coil or centrifugal fan) while allowing high flow rate circulation. The implementation of a tangential fan can also promote the generation of relatively wide air blades likely to lick large and powerful home compartment 2 and the surfaces that define it. However, the invention is absolutely not limited to the implementation of a specific air entrainment device, so that the use of a centrifugal or helicoidal fan is also perfectly conceivable, without the fact that the we leave the scope of the invention. Advantageously, the air entrainment device 27 is removably attached to the envelope, so that the cabinet 1 can be used with or without forced air driving device 27, depending on the conditions specific use (presence or absence of active equipment within the cabinet 1, climatic conditions ...). Preferably, the air entrainment device is removably attached to the ceiling 4 so as to rest advantageously on the latter. In this case, the air entrainment device 27 is advantageously designed to be disposed within the chamber 26. For this, the top of the cabinet 1, including in particular the roof 21, is removable, to allow a user to access the interior of the chamber 26 to mount or disassemble the air entrainment device 27. For this purpose, the roof 21 and the upper bands 22, 23, 24 , 25 advantageously form a one-piece cap designed to removably cap the ceiling 4, as shown in FIG. 6. In order to facilitate the installation and removal operations of the air entrainment device 27 at within the cabinet 1, the latter advantageously includes a housing 28 which is intended to be removably attached to said envelope, and more specifically in this case to be attached to the ceiling 4 and be fixed thereto by any means appropriate. The air entrainment device 27 is advantageously mounted within the housing 28, so as to be embedded in the latter. The housing 28 is for example in the form of a box of substantially parallelepiped shape with a bottom wall provided with an opening forming the air inlet 27B and an opposite top wall. These lower and upper walls are connected by a side wall including in particular a front panel through which is formed an opening corresponding to the air outlet 27C. Preferably, as is apparent in particular from FIG. 7, the cabinet 1 also includes a control unit 29 of said air entrainment device 27. Said control unit is in the form of an independent monobloc cabinet which includes all the functional components (particularly electronic) allowing the management and control (possibly regulated) of the air entrainment device 27. The control unit 29 is itself advantageously removably attached to said case 28, so that it can be either completely independent of said housing 28, or embarked on the latter to form with said housing 28 a unitary subassembly (shown in Figure 8). Advantageously, the housing 28 comprises a cavity 28A in which is intended to be inserted, at least partially, as illustrated in FIG. 8, the control unit 29. Advantageously, in order to facilitate the maintenance of the cabinet 1, this The latter is designed to allow a user to separate the control unit 29 from the housing 28 without first removing the housing 28 from the cabinet 1. For this purpose, an access opening 30 is advantageously provided through the ceiling 4, so as to allow the control unit 29, when attached to said housing 28 and that the latter is mounted within the chamber 26, to protrude from the ceiling 4, within the compartment 2. A user is thus able to easily access the control unit 29, since it suffices to open the door 8 and / or the door 9 to access the interior of the compartment 2 and thus be able to seize the control unit 29 and disengage it from the housing 28 from the inside of the cabinet 1, without having to disassemble the roof 21 of the latter. The user can thus exchange a control unit 29 by another similar control unit and send the control unit 29 thus extracted to a maintenance workshop. These various features, in particular concerning the use of a removable control unit 29 and accessible directly from the inside of the cabinet 1, constitute an invention as such, distinct from the other technical aspects described in what follows. above.

Claims (16)

REVENDICATIONS1. Outdoor cabinet (1) intended to house an electrical and / or electronic and / or telecommunication equipment, said cabinet (1) comprising an envelope which contributes to delimiting a receiving compartment (2) of said equipment and which comprises at this effect a bottom (3), a ceiling (4) and at least a first and a second facade (5, 6) rising vertically opposite and at a distance from each other between said bottom (3) and ceiling (4), said cabinet (1) further comprising at least one intake opening (12) allowing the admission of outside air within the cabinet (1) and an extraction opening (13) allowing the air present in the compartment (2) to escape out of the latter, so as to thereby establish an air flow between said intake (12) and extraction (13) openings, said cabinet (1) ) being characterized in that said inlet opening (12) is formed substantially exclusively either through the first facade (5) and at the near the bottom (3), either through the bottom (3) and in the vicinity of the first facade (5), or across both the bottom (3) and the first facade (5) and in the vicinity of the interface between the bottom (3) and the first facade (5), while the extraction hole (13) is formed substantially exclusively either through the second facade (6) and in the vicinity of the ceiling (4), or to through the ceiling (4) and in the vicinity of the second facade (6), or through both the ceiling (4) and the second facade (6) and in the vicinity of the interface between the ceiling (4) and the second facade (6). 2. Cabinet (1) according to claim 1 characterized in that the distance separating said first and second facades (5, 6) substantially corresponds to the depth (P) of the cabinet (1). 3. Cabinet (1) according to claim 1 or 2 characterized in that said intake ports (12) and extraction (13) are arranged on the envelope so that their respective orthogonal projections on the same horizontal plane s 'extend substantially to the right of each other. 4. Cabinet (1) according to one of claims 1 to 3 characterized in that it comprises firstly a front face formed by said first front (5), said front face being equipped with at least one door ( 8, 9) allowing access to the interior of said receiving compartment (2), and secondly a rear face formed by said second facade (6), said envelope comprising two lateral facades (10, 11) which rise vertically opposite and at a distance from each other between said bottom (3) and ceiling (4) so as to connect said first and second facades (5, 6). 5. Cabinet (1) according to claim 4 characterized in that said first facade (5) comprises a lower front band (14) which extends under said at least one door (8, 9), said intake port ( 12) being formed through said lower front band (14). 6. Cabinet (1) according to claim 5 characterized in that said bottom (3) extends substantially horizontally and at a distance from the ground (7) on which is intended to rest said cabinet (1), so as to spare under said bottom (3) an interstitial space (15) that said lower front panel (14) also contributes to delimit, such that said inlet port (13) communicates said interstitial space (15) with the outside, said cabinet (1) comprising an intermediate opening (17) formed through said bottom (3) to allow air admitted into the interstitial space (15) through the intake port (12) to enter said compartment ( 2). 7. Cabinet (1) according to claim 6 characterized in that it comprises a filter which equips said intermediate hole (17). 8. Cabinet (1) according to one of claims 1 to 7 characterized in that said extraction hole (13) is formed through said ceiling (4). 9. Cabinet (1) according to claim 8 characterized in that it comprises a discharge port (20) formed through the first facade (5), in the vicinity of said ceiling (4), said extraction openings (13). and discharge (20) being placed in aeraulic communication so that air escaping from said compartment (2) by said extraction hole (13) is then rejected outside the cabinet (1) by said hearing discharge (20). 10. Cabinet (1) according to claim 9 characterized in that said discharge orifice (20) is oriented so that the air escapes from the cabinet (1) by said discharge orifice (20) in a manner oblique incidence (X-X ') directed downwards, in order to stir ambient outside air in front of the first facade (5). 11. Cabinet (1) according to one of claims 1 to 10 characterized in that it comprises an air drive device (27) mounted in aeraulic communication with the extraction hole (13) in order to sucking the air present in said compartment (2) by said extraction hole (13) and thus establish a forced air circulation between said inlet (22) and extraction (13). 12. Cabinet (1) according to claims 9 and 11 characterized in that said air drive device (27) is mounted in aeraulic communication with said discharge port (20) for discharging the air sucked into said compartment (2) by said delivery port (20). 13. Cabinet (1) according to claim 11 or 12 characterized in that said air driver (27) comprises a tangential fan. 14. Cabinet (1) according to one of claims 11 to 13 characterized in that said air driver (27) is removably attached to said envelope. 15. Cabinet (1) according to claim 14 characterized in that it includes a housing (28) which is intended to be removably attached to said casing and within which is mounted said air drive device (27). ), said cabinet (1) also including a control unit (29) of said air driver (27), said control unit (29) itself being detachably attached to said housing (28). 16. Cabinet (1) according to one of claims 1 to 15 characterized in that said extraction hole (13) defines a passage section which is greater than the passage section defined by said intake port (12) .