JP6683556B2 - Electrical equipment - Google Patents

Description

  The present invention relates to an electric device, and more particularly, to air cooling of components arranged inside.

  BACKGROUND ART Conventionally, as a configuration for air-cooling internal parts of an electric device, there is one disclosed in Patent Document 1. In the technique of Patent Document 1, a plurality of rectangular parallelepiped casings of electric devices having the same structure are partitioned into an upper chamber and a lower chamber by a partition wall. Each of the housings is vertically arranged in the rack so that an upper wall of the housing adjacent to a lower side of the housing is located at a predetermined interval on a bottom wall thereof. Each chassis is composed of four columns of the rack located at the four corners of each chassis, and the two columns located on both side faces of the chassis respectively are placed between the columns that are arranged from the front side to the back side. It is supported. Air circulates from the front side to the back side of the lower chamber of each housing to cool the components in the lower chamber. In addition, an air outlet is formed on the bottom wall of each housing, and a part of the air flowing in the lower chamber flows from the air outlet to a predetermined distance between the housings from the front side to the back side. It circulates and cools the components inside the upper chamber of the lower housing.

JP, 2013-133345, A

  According to the technique of Patent Document 1, it is possible to cool the components on the upper chamber side of the housing. However, if the rack in which the housings of these electric devices are placed is an open type without side walls, the air flowing out from the air outlets will reach the outside of the rack from between the columns on both sides of the housing. It leaked out and did not flow between the front side and the back side of the lower casing, and the lower casing could not be cooled well. This is, for example, in the case where the rack described above is in the shape of being laid down sideways, and when the housing accommodated in the rack is arranged such that the upper chamber and the lower chamber are left and right chambers, the upper wall corresponding to the side wall described above. The same problem occurs when the housing is placed vertically in a rack whose bottom wall is opened.

  The present invention provides an electric device that can satisfactorily cool components in a housing with air from an adjacent housing even if the rack in which the housing is arranged has an open surface. To aim.

  The electric device of one embodiment of the present invention includes a housing. In the case, peripheral walls continuously connect the peripheral edges of the first and second walls facing each other to form a room inside. An air flow path is provided in the room. The air flow path has an air port that communicates a part of the peripheral wall on the front side and the back side of the housing with the outside, and a fan provided in this air port moves the air in the air port. The first wall is provided with an air outlet for letting out a part of the air flowing through the air flow path. The rack has four columns located at the four corners of the housing. The space between the columns is open. A plurality of supports attached to the columns support the adjacent housings to form a predetermined gap between one of the first walls and the other of the second walls to form each of the housings. I support you. Each of the supports has an air introducing means for introducing the air flowing out from the air outlet of the one casing to the other casing side, and flows out from the air introducing means to the other casing side. A rectifying wall for the introduced air is provided. It is desirable that the windbreak wall be provided between the columns on the front side and the back side.

  In the electric device configured as described above, the air flowing through the air flow path inside the housing by driving the fan cools the components inside the housing. On the other hand, a part of the air flowing through the air flow path flows from the air outlet to the support body side, and further flows to the other housing side via the air introduction means of the support body. Here, the air is conditioned by the rectification wall formed on the side of the other case, and even if the rack columns are open, the air is separated between the front side and the back side of the second wall of the other case. Flows through the space and cools the components in the other housing.

  In the above aspect, the connecting wall can connect between the ends on the back side of each air conditioning wall. In this case, the connecting wall has a length dimension shorter than that of the air conditioning wall. According to this structure, the air that has flowed to the back side satisfactorily flows from the back side, and the air on the second wall of the other housing smoothly flows.

  In either of the above two modes, the rectifying wall may be configured to be substantially perpendicular to the support. According to this structure, the air hitting the air-conditioning plate is reflected at almost the same angle as the angle of incidence on the air-conditioning plate, so that it does not leak to the outside of the air-conditioning plate.

  In any of the above-mentioned three aspects, the air introducing means can be an opening. In this case, the openings are provided symmetrically on the front side and the back side of the support. According to this structure, when the support is attached to the rack, it is not necessary to consider which of the supports is the front side or the back side, and the attachment is easy.

  In any of the above aspects, the front peripheral wall of each casing can be extended to the lower portion of the support. According to this structure, the air introduced from the air introduction unit can be prevented from flowing out from the peripheral wall on the front side, and the components in the other housing can be efficiently cooled.

  In any of the above aspects, each of the housings is vertically adjacent to and supported on the support, and a peripheral wall on the front side of one of the housings extends to a lower portion of the support and the other of the housings. It may have a length that reaches the second wall. According to this structure, the peripheral wall on the front side is sealed in each housing, and the air introduced from the air introducing unit can be prevented from flowing out from the peripheral wall on the front side, so that each housing can be efficiently used. Can cool parts inside the body.

  As described above, according to the present invention, even if the side surface of the rack in which the plurality of housings are arranged is open, the components of each housing are well cooled by the air from the adjacent housings. be able to.

It is a partially broken side view of the electric device according to the first embodiment of the present invention. FIG. 3 is a perspective view and a bottom view of a housing used in the electric device of FIG. 1. It is a perspective view of the electric equipment of FIG. FIG. 2 is a perspective view showing a state where a tray is attached to a part of the rack of the electric device of FIG. 1. FIG. 2 is a perspective view showing a state in which a housing is arranged on a part of trays of the rack of the electric device of FIG. 1. It is a perspective view of the tray used in the rack of the electric equipment of FIG. It is a figure which shows the flow of the air in the electric equipment of FIG. FIG. 2 is a partially omitted perspective view of columns of a rack of the electric device of FIG. 1. It is a bottom view of the tray used with the rack of the electric equipment of the 2nd Embodiment of this invention. It is a top view of the tray used with the rack of the electric equipment of the 3rd Embodiment of this invention.

  In this example, the electric device according to the first embodiment of the present invention includes a plurality of housings 2, a single housing 3, and a rack 4, as shown in FIG. The housing 2 is for rectifiers and power supplies, and the housing 3 is for a controller that controls the devices of the housing 2. The housings 2 are horizontally placed, three racks are arranged adjacent to the rack 4 from the upper side toward the lower side, and the housings 3 are horizontally placed below the racks 4. On the lower side of the body 3, three housings 2 are arranged adjacent to each other toward the lower side. Although the different housings 2 and 3 are used in this example, the housing to be stored in the rack 4 may be a housing provided with a plurality of the same devices, and is particularly suitable for a housing provided with a device that generates heat. .

  The housing 2 is formed in a substantially rectangular parallelepiped shape as shown in FIG. 2A, and has a first wall, for example, an upper wall 8 and a second wall facing the upper wall 8 with a space, for example, a lower wall. 10 is provided as shown in FIG. A peripheral wall, for example, side walls 12 and 12, a front wall 14 and a rear wall 16 are provided so as to surround the space between the upper wall 8 and the lower wall 10.

  Inside the housing 2, a heat generating component such as a semiconductor element or a transformer is housed and needs to be cooled. Therefore, for example, an air port 18 is formed in the front wall 14, and a fan 20 is attached to the air port 18. Although not shown, a plurality of exhaust ports are formed in the rear wall 16 so as to face the fan 20, and these form an air flow passage from the front wall 14 to the rear wall 16 in the housing 2. ing. Therefore, by driving the fan 20, as shown by the broken line in FIG. 1, air is introduced into the housing 2, passes through the housing 2 from the front wall 14 side to the rear wall 16 side, and the rear wall It flows out of the housing 2 from the exhaust port of 16. The heat-generating components in the housing 2 are cooled by this air flow.

  The housing 2 is arranged in the rack 4 as described above. As shown in FIG. 3, the rack 4 has columns 22a, 22b, 22c, and 22d located at the four corners of each housing with the housings 2 and 3 arranged vertically. . The columns 22a, 22b, 22c, 22d are formed in a substantially prismatic shape. A flat plate-like lid plate 23 is attached between the upper ends of the columns 22a, 22b, 22c, 22d, and legs 26, 26 are attached between the lower ends of the columns 22a, 22c and between the lower ends of the columns 22b, 22d, respectively. There is. No wall is provided between the columns 22a and 22c and between the columns 22b and 22d. As shown in FIG. 4, a plurality of supports, for example, a plate-shaped tray 24, are arranged between the columns 22a, 22b, 22c, 22d, respectively. On these trays 24, the casings 2 and 3 are placed in a horizontally placed state. These trays 24 have a predetermined space, for example, a space necessary for air circulation, between the housing 2 or 3 placed on the tray 24 and the housing 2 or 3 adjacent to the tray 24 below. It is arranged to be located.

  By the way, depending on the components of the casing 2, there is a possibility that the components are arranged at a position close to the upper wall 8 of the casing, and the air introduced from the fan 20 into the casing 2 alone does not cool well. Therefore, by utilizing the fact that the casings 2 are arranged above and below, the air from the casing 2 existing on the upper side is passed through the upper wall 8 of the casing 2 adjacent to the lower side, and The components located near the upper wall 8 of the housing 2 are cooled. Therefore, as shown in FIG. 1, in each housing 2, an air outlet 26 is formed in the lower wall 10 located near the fan 20, for example. Further, in order to satisfactorily draw air from the air outlet 26 to the outside, the air outlet 26 is provided with a rectifying plate 28 which is inclined obliquely upward toward the front wall 14 side. In order to guide the air flowing out from the air outlet 26 to the lower side of the lower wall 10 to the upper wall 8 of the housing 2 adjacent to the lower side, as shown in FIGS. 1, 4, 5, and 6, the tray is shown. An air introduction means, for example, an opening 30 penetrating in the vertical direction is formed in the tray 24 at a position on the tray 24 corresponding to the air outlet 26.

  As a result, as shown by the broken line in FIG. 1, air is introduced from the opening 30 onto the upper wall 8 of the housing 2 adjacent to the lower side, and the air flows toward the back wall 16 to cause the inside of the lower housing 2 to flow. The parts on the upper side of are also cooled. However, the air introduced from the opening 30 to the upper wall 8 side of the lower housing 2 not only linearly flows to the rear wall 16 side, but also flows to the side walls 12 and 12 side of the housing 2. In particular, when inclined edges are provided on both sides of the air outlet port 26 as shown in FIG. 2B so that the air flows to the both side walls 10 and 10 of the upper wall 8 of the lower case 2 as well, both side walls The flow to the 10 and 10 side becomes remarkable.

  Since the rack 4 does not have a wall between the columns 2a, 2c, 2b, 2d, the air heading to the side walls 12, 12 moves to the side of the rear wall 16 while the column 2a. 2c, 2b, and 2d flow out to the side of the rack 4 and do not flow to the rear wall 16 side, and are particularly close to the rear wall 16 side among the components near the upper wall 8 in the housing 2. In-situ components cannot be cooled well.

  Therefore, as shown in FIGS. 5 and 6, air conditioning plates 32, 32 are formed on both sides of the tray 24 corresponding to both side walls 12, 12 of the housing 2. The air rectifying plates 32, 32 are formed at a right angle to the tray 24, extend to the vicinity of the upper wall 8 of the housing 2 below, and are formed from the front wall side 14 side to the rear wall 16 side. With this structure, the air introduced from the opening 30 to the upper wall 8 side of the lower housing 2 and directed toward the side walls 10 and 10 of the housing 2 is as shown by the broken line in FIG. Then, it collides with the air conditioning plates 32, 32 provided on both sides of the tray 24 and moves toward the rear wall 16 side of the lower housing 2. As a result, the parts on the rear wall 16 side in the lower housing 2 are also cooled well. Moreover, as is clear from FIG. 3, since the lower end of the air regulating plate 32 extends to the vicinity of the upper wall 8 of the lower casing 2, the lower end of the air regulating plate 32 and the lower wall of the casing 2 below. Almost no air flows out laterally from the gap, and even if there is no side wall between the columns 22a and 22c and between the columns 22b and 22d, there is almost no outflow of air to the side of the rack 4. Further, since the air conditioning plates 32, 32 are positioned substantially at right angles to the tray 24, the air that has collided with the air conditioning plate 32 is reflected and satisfactorily flows toward the rear wall 16 side. If the air conditioning plate 32 is arranged so as to form an obtuse angle with respect to the tray 24, a gap is formed between the lower housing 2 and the lower end of the air conditioning plate 32, and air is directed to the side of the rack 4. leak. Further, when the air conditioning plate 32 is arranged so as to form an acute angle with respect to the tray 24, the air from the opening 30 does not reach the side wall 12 side portion of the housing 2 and the housing 2 is not cooled. Occurs. If the air conditioning plate 32 is arranged substantially at right angles to the tray 24, such a problem does not occur.

  In order to prevent the air from the opening 30 from flowing out to the front wall 14 side, a connecting wall 34 is formed so as to connect between the ends of the air rectifying plates 32, 32 on the front wall 14 side. The connecting wall 34 is formed such that its lower end is in contact with the upper wall 8 of the housing 2 adjacent to the lower side. Similarly, a connecting wall 36 is formed so as to connect between the end portions of the air rectifying plates 32, 32 on the rear wall 16 side. The lower end of the connecting wall 36 is shorter than the connecting wall 34 so as not to reach the upper wall 8 of the adjacent housing 2. This is because the air that has flowed from the front wall 12 side is satisfactorily led to the outside from the rear wall 16 side. In this example, the connecting wall 36 is formed on the rear wall 16 side in order to increase the strength of the tray 24, but the connecting wall 36 may not be provided.

  In order to prevent the air from the opening 30 from flowing out to the front wall 14 side, as shown in FIG. 1, a connection wall 34 is provided, and the front wall 14 of each housing 2 is adjacent downward. It contacts the upper end of the front wall 14 of the housing 2. That is, each front wall 14 extends beyond the bottom wall 10 of each housing 2 to the lower side. Moreover, since the front wall 14 is in contact with the upper end of the front wall 14 of the case 2 adjacent to the lower side, the gap on the front side of each case 2 is small, and the outflow of air from the front side of the case 2 is small. Can be prevented.

  The trays 24 are attached to the rack 4 by utilizing the air conditioning plates 32 on both sides of the tray 24. For example, as shown in FIG. 8, at the inner edge 22d2 of the surface 22d1 on the front wall 14 side of the column 22d, a plate protruding from the upper end to the lower end along the side wall 12 of the housing 2 toward the column 22b side. A protruding portion 38 having a shape of a circle is formed. There is a position in the overhanging portion 38, which is located inward from the position corresponding to the lower end of the air conditioning plate 32 of each tray 24 by an amount corresponding to the thickness of the air conditioning plate 32, and extends upward to reach the upper end of the air conditioning plate 32. The protrusion 40 is formed by cutting and raising the protruding portion 38. Although not shown, the other columns 22a, 22b, and 22c are also formed with overhanging portions and projections 40. As shown in FIG. 1, the tray 24 is arranged so that the protrusions 40 are located inside the air conditioning plate 32 of each tray 24, and the tray 24 is supported by the rack 24.

  The racks 4 of the housings 2 and 6 are mounted by mounting the L-shaped angles 42 mounted on both sides of the front wall 14 to the columns 22a and 22b, respectively, as shown in FIGS. It is being appreciated.

  In this electric device, after the rack 4 is assembled as shown in FIG. 4, the tray 24 is attached between the columns 22a and 22c and between 22b and 22d, and the casings 2 and 3 are mounted on the trays 24 as shown in FIG. 3, the casings 2 and 3 are arranged on all the trays 24 as shown in FIG. 3, and the casings 2 and 3 are attached to the columns 22a and 22b by the L-shaped angle 42. In this example, the L-shaped pallet 42 is used to fix the respective casings 2 and 3 to the columns 22a and 22b, but the L-shaped angle 42 may be used to fix the casings 2 and 3 on the back side. The housings 2 and 3 do not necessarily have to be fixed.

  FIG. 9 shows the tray 24 of the electric device according to the second embodiment. The tray 24 is provided with new air conditioning plates 44 and 46 on the surface of the lower side of the tray 24 on the side of the housing 2 from the opening 30 toward the connecting wall 36 side. By adding the air conditioning plates 44 and 46 in this way, it is possible to reliably send air to the rear wall 16 side.

  FIG. 10 shows the tray 24a of the electric device according to the third embodiment. The tray 24a is provided with two openings 30a and 30b in both the connecting walls 34 and 36, and these openings 30a and 20b have a straight line connecting the centers of the air rectifying plates 32 and 32 as an axis of symmetry. The tray 24a is formed in line symmetry, and the tray 24a may be arranged such that the connecting wall 34 of the tray 24a is located between the columns 22a and 22b or the connecting wall 36 is located between the columns 22a and 22b. The opening 30a or 30b is located at a position facing the air outlet 26. However, the connecting walls 34 and 36 have short lengths like the connecting wall 34 of the first embodiment. In the electric device according to the first embodiment, the opening 30 overlaps the air outlet 26 of the housing, the connecting wall 34 is located between the columns 22a and 22b, that is, the directionality of the tray 24 is taken into consideration. Need to be placed. However, since it is not necessary to attach the tray 24a in consideration of the directionality, the attaching work is facilitated. Further, since the connecting walls 34 and 36 have a short length, the air is satisfactorily transferred from the rear wall 16 side of the housing 2 to the rack 4 regardless of which connecting wall is located between the columns 22c and 22d. It leaks to the outside. In that case, the length of the connecting wall between the columns 22a and 22b is short, and air may flow toward the front wall 14 side of the housing 2. However, as shown in the first embodiment, Since the lower end of the front wall 14 comes into contact with the upper end of the front wall 14 of the housing 2 adjacent to the lower side and there is almost no gap, air rarely flows out from between the front walls 14.

  In the above-described embodiment, the case 2 is configured to have the rectifier or the power source inside, but the case 2 is not limited to this, and any other electric device in which a heat-generating component is housed may be used. The present invention can also be implemented in electric equipment. In addition, in the above-described embodiment, the housing 2 has a space inside, but as shown in JP-A-2013-133345, the interior is partitioned in the vertical direction. You can also use the existing one. In the above-described embodiment, the rack 4 has the horizontally arranged casings 2 and 3 arranged vertically, but the vertically arranged casings 2 and 3 are arranged horizontally. Racks can also be used. In the above embodiment, the casings 2 and 3 have a rectangular parallelepiped shape. However, the shape is not limited to this. For example, a short cylindrical shape or a short elliptic shape may be used. In the above embodiment, the fan 20 is provided on the front wall 14 side and the exhaust port is provided on the rear wall 16 side. Conversely, however, the fan 20 is provided on the rear wall 16 side and the exhaust port is provided on the front wall 14 side. You can also In the above-described embodiment, the opening 30 is formed in the tray 24 as the air introducing means, but the present invention is not limited to this. For example, the width dimension of the air outlet 26 at a position facing the air outlet 26 of the housing 2. The tray 24 can also be divided into two parts so that they can be arranged at intervals corresponding to. However, in this case, each member of the tray 24 divided into two parts needs to be supported by the rack 4 by an appropriate means other than the protrusion 40. Alternatively, the entire tray 24 may be formed in a mesh shape so that the air from the air outlet 26 flows downward from each stitch of the tray 24. Although the openings 30a and 30b are arranged line-symmetrically in the third embodiment, the openings 30a and 30b may be arranged point-symmetrically with respect to the center of the tray 24a.

2 housing 4 rack 20 fan 24 tray (support)
26 air outlet 30 opening (air introducing means)
32 air conditioning plate

Claims (6)

A peripheral wall continuously connects the peripheral edges of the first and second walls facing each other to form a room, and in the room, an air port communicating a part of the peripheral wall on the front side and the rear side with the outside, An air flow path is provided in the air opening, the air flow path having a fan for moving the air in the air opening is provided, and the first wall is provided with an air outlet for letting out a part of the air flowing in the air flow path. The housing,
It has four columns located at four corners of the housing, the spaces between the columns are open, and the columns are attached to the columns, and the adjacent housings are connected to the first wall on one side and the second wall on the other side. A rack including a plurality of support bodies that respectively support the respective housings with a predetermined gap between the wall and the rack,
Each of the supports has an air introducing unit that introduces the air flowing out from the air outlet of the one casing into the other casing side, and flows out from the air introducing unit and the other casing. An electric device equipped with a rectifying wall for the air introduced to the body side.   The electric device according to claim 1, wherein a connecting wall connects between the ends on the back side of each of the air conditioning walls, and the connecting wall has a length dimension shorter than that of the air conditioning wall.   The electric device according to claim 1 or 2, wherein the air rectifying wall is substantially perpendicular to the support.   The electric device according to any one of claims 1 to 3, wherein the air introducing unit is an opening, and the opening is provided symmetrically on a front side and a back side of the support.   The electric device according to any one of claims 1 to 4, wherein the peripheral wall on the front side of each of the casings extends to the lower portion of the support.   The electric device according to any one of claims 1 to 4, wherein each of the housings is vertically adjacent to and supported on the support body, and a peripheral wall on the front side of one of the casings extends to a lower part of the support body and the other side wall extends. An electric device having a length that reaches the second wall of the housing.

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