JP5489963B2 - Unit built-in electric device and fan unit - Google Patents

Description

  The present invention relates to a unit built-in electric device and a fan unit in which at least one heat generating electric component built-in unit having a heat generating component inside a rack and a fan unit for cooling the heat generating electric component built-in unit are arranged.

  A fan unit is used to cool an electronic device provided in a rack on which electronic devices used in the IT industry such as communication devices and servers are mounted. For example, Japanese Unexamined Patent Application Publication No. 2004-023036 (Patent Document 1) discloses a fan unit that sends air to a device to be cooled by a fan motor installed at the bottom of the rack through a dedicated duct and nozzle integrated with the rack. ing.

JP 2004-023036 A

  In recent years, there has been an increasing number of communication devices that take in air from the side surface of a unit with a built-in heat generating electrical component arranged in a rack and exhaust it to the opposite side surface. In this case, the warm air exhausted from the side is not easily exhausted from the rack. Further, since the hot air discharged into the rack is sucked into another heat generating electrical component built-in unit for cooling, there is a possibility that the cooling of the unit may be obstructed.

  In the prior art disclosed in Japanese Patent Application Laid-Open No. 2004-023036, air from a fan motor is sent to a cooling target device through a duct or nozzle integrated with a rack, and the installation of the electronic device to be cooled is limited to a dedicated shelf. The The installation location of the cooling device main body incorporating the fan is also limited to the lower part of the rack. In addition, this is for directing air to the electronic devices on the shelves in the rack, and discharge of hot air trapped on the side surfaces in the rack is not considered. In addition, special equipment such as a rack equipped with a duct and a shelf board on which nozzles can be installed is required.

  An object of the present invention is to provide an electric device with a built-in unit that can flow cooling air along a side surface in a rack and upward with a simple configuration.

  Another object of the present invention is to provide a fan unit that can be installed in a rack and allows cooling air to flow along a side surface in the rack and upward.

  The present invention is directed to a unit built-in electric device in which at least one heat generating electric component built-in unit having a heat generating component inside a rack and a fan unit for cooling the heat generating electric component built-in unit are arranged. In the present invention, the fan unit includes a case, one or more blowers, and a pair of wind direction plates. The case has one or more discharge ports provided respectively in the pair of side wall portions, and one or more suction ports provided in at least one of the pair of side wall portions other than the pair of side wall portions. It is a box-shaped case. The one or more blowers are arranged inside the case so as to suck air from the one or more suction ports and to discharge air from the one or more discharge ports provided in the pair of side walls. And a pair of wind direction board is each provided with respect to a case, and makes the flow of the air discharged from the 1 or more discharge port respectively provided in a pair of side wall part to face upwards. The pair of wind direction plates also serves as a pair of support members for supporting the case on the rack.

  According to the present invention, by mounting the fan unit on the rack, it is possible to easily make a wind flow upward along the side surface of the rack. Therefore, the hot air discharged from the heat generating electrical component built-in unit disposed on the fan unit can flow upward, and the hot air can be prevented from staying. Further, since the pair of wind direction plates also serves as a support member used when installing the fan unit inside the rack, the number of parts can be reduced.

  The suction port is provided on at least one side wall so as to suck air from the front of the rack. In this way, air is sucked into the case of the fan unit from the front side of the rack, and cooling air is sent upward from the side of the case. Therefore, even if the rack is installed in a state where it is pressed against the wall of the room, the air necessary for cooling can be reliably sent into the rack.

  In the fan unit of the present invention, the wind direction plate is continuous with the first wall portion facing the side wall portion so as to form a gap between the discharge port and the lower end of the gap. A second wall portion; and third and fourth wall portions that are continuous with at least both ends of the first wall portion and block both ends of the gap. When the wind direction plate has such a structure, the cooling air discharged into the gap from the discharge port of the fan unit is guided only upward by the wind direction plate. Therefore, cooling can be performed most efficiently.

  Although the internal structure of the fan unit is arbitrary, for example, the inside of the case includes a first space in which a power source is disposed, and a second space and a third space in which a pair of blowers are disposed. It can be set as the structure partitioned off by the partition wall part. In one of the remaining pair of side walls, a power switch is provided at a position corresponding to the first space, a first suction port is provided at a position corresponding to the second space, and a third A second suction port can be provided at a position corresponding to the space. If it does in this way, a pair of air blower can be driven with one power supply. Further, the installation area of the suction port can be increased as much as possible, and the power switch can be easily operated.

  It is preferable to use a centrifugal blower as each of the pair of blowers arranged inside the case. And the blower outlet of a centrifugal blower is connected with the discharge outlet provided in the case, and a clearance gap is formed between the suction inlet of a centrifugal blower and a case. Centrifugal blowers have a high static pressure and a large air volume. Therefore, even if the thickness of the case is reduced and the gap between the suction port of the centrifugal blower and the case is reduced, a necessary and sufficient air volume can be ensured. Therefore, the thickness of the case can be reduced.

It is a perspective view which shows the structure of the principal part of an example of embodiment of the unit built-in electric apparatus of this invention. It is a schematic front view of the electric apparatus with a built-in unit according to the embodiment. It is a perspective view of the fan unit used in an embodiment. It is a perspective view of the fan unit except a pair of wind direction plates which will be described later from the fan unit. It is a top view of a fan unit except a top plate of a case and a pair of wind direction plates.

  DESCRIPTION OF EMBODIMENTS Embodiments of a unit built-in electric device and a fan unit according to the present invention will be described below in detail with reference to the drawings. FIG. 1 is a perspective view showing a configuration of a main part of an example of an embodiment of an electric apparatus with a built-in unit according to the present invention. FIG. 2 is a schematic front view of the unit built-in electric apparatus 1 of the present embodiment. The unit built-in electric device 1 includes a heat generating electric component built-in units 5A and 5B, a non-heat generating electric component built-in unit 5C that does not generate heat as much as necessary for cooling, and a fan according to the present embodiment. The unit 7 is accommodated. As shown in FIG. 2, in addition to the two vertical frames 9 shown in the figure, the rack 3 connects two other vertical frames to the rear of the fan unit 7 and the like, and both ends of the four vertical frames 9. And a horizontal frame (not shown) that supports at least the heat-generating component built-in units 5A and 5B that are disposed across the two vertical frames 9 arranged in the front-rear direction and have heat-generating components inside the rack 3. A frame structure having The lowermost non-heat generating electrical component built-in unit 5C is supported by the lower frame body 11. The three side surfaces excluding the side surface located on the front side of the frame structure are closed by the side panel 13, and the upper surface of the frame structure is covered by the top panel 15. A ventilation hole (not shown) is formed in the top panel 15. The warm air rising in the rack 3 comes out of the rack 3 through a vent hole (not shown). Of course, an exhaust fan may be disposed in the vent hole (not shown). The heat generating electrical component built-in units 5A and 5B have a structure for discharging the exhaust of the blower for exhausting the heat generated inside to the side surface of the case.

  FIG. 3 shows a perspective view of the fan unit 7 used in the present embodiment, and FIG. 4 shows a perspective view of the fan unit obtained by removing a pair of wind direction plates 21 described later from the fan unit 7 of FIG. FIG. 5 is a plan view of the fan unit excluding the top plate 31 and the pair of wind direction plates 21. In these drawings, the fan unit 7 includes a case 17, a pair of blowers 19 and 20 (see FIG. 5), and a pair of wind direction plates 21. The case 17 includes a pair of side wall portions 23 and 25 facing the side surface of the rack 3, and unlike the pair of side wall portions 23 and 25, the side wall portion 27 facing the front of the rack 3 and the side wall facing the back surface of the rack 3. The box 29 is provided with a portion 29, a top plate 31 positioned on the top panel 15 side of the rack 3, and a bottom plate 33 positioned on the frame body frame side at the bottom of the rack. Each of the pair of side wall portions 23 and 25 is provided with one discharge port 35. In the present embodiment, the discharge port 35 is constituted by a plurality of slits. Two suction ports 37 and 38 are provided in the side wall portion 27 located on the front side of the rack 3. As shown in FIG. 5, a power outlet 39 is disposed on the side wall 29 located on the back side of the rack 3.

  As shown in FIG. 5, the interior of the case 17 includes a first space 47 in which the power supply 45 including the transformer 41 and the control circuit 43 are disposed, and second and third in which the pair of blowers 19 and 20 are disposed. The spaces 49 and 51 are partitioned by the first and second partition wall portions 53 and 55. A power switch 57 is provided at a position corresponding to the first space 47 on the side wall portion 27 located on the front side of the case 17. The side wall 27 is provided with a first suction port 37 at a position corresponding to the second space 49, and a second suction port 38 at a position corresponding to the third space 51. The suction ports 37 and 38 are each covered with a perforated plate. With such a structure, the pair of blowers 19 and 20 can be driven by one power source 45. Further, the installation area of the suction ports 37 and 38 can be increased as much as possible, and the power switch 57 can be easily operated.

  In the present embodiment, a centrifugal blower is used as the pair of blowers 19 and 20 disposed inside the case 17. In the present embodiment, the blowout ports of the blowers 19 and 20 are communicated with the discharge port 35 provided in the case 17. A gap is formed between the suction ports 19 </ b> A and 20 </ b> A of the blowers 19 and 20 and the top plate 31 of the case 17. Centrifugal blowers have a high static pressure and a large air volume. Therefore, even if the thickness of the case 17 is reduced and the gap between the suction ports 19A and 20A of the centrifugal blower and the top plate 31 of the case 17 is reduced, a necessary and sufficient air volume can be ensured. Since the three spaces 47 to 51 are partitioned by the first and second partition wall portions 53 and 55 as in the present embodiment, the two discharge ports 35 are not affected by the presence of the power supply 45. Almost the same amount of air is exhaled.

  As shown in FIGS. 1 and 3, a mounting plate 59 is screwed to the front portions of the side wall portions 23 and 25 of the case 17. A through hole 60 is formed at the front end of the mounting plate 59. As shown in FIG. 1, the mounting plate 59 is screwed to the vertical frame 9 using this through hole 60. By screwing, the fan unit 7 can be prevented from sliding forward from the rack 3 due to vibration.

  In the present embodiment, the pair of wind direction plates 21 are provided slidably with respect to the side wall portions 23 and 25 of the case 17. As shown in FIG. 1, the pair of wind direction plates 21 are fixed to the vertical frame 9 by using fixing means (screws) not shown, and also serve as a support member that supports the fan unit 7 slidably with respect to the rack 3. Yes. The pair of wind direction plates 21 directs the flow of air discharged from the two discharge ports 35 provided in the pair of side wall portions 23 and 25 upward. Therefore, as shown in FIG. 3, the pair of wind direction plates 21 includes a first wall portion 21 </ b> A that opposes the side wall portions 23 and 25 so as to form a gap G between the air outlet plate 35 and the first wall. A second wall portion 21B that is continuous with the portion 21A and closes the lower end of the gap G; a third and fourth wall portion 21C that is continuous with at least both ends of the first wall portion 21A and closes both ends of the gap G; 21D. In particular, the second wall portion 21B closing the lower end of the gap G is in contact with the bottom plate 33 of the case 17 and supports the case 17 from below. When the wind direction plate 21 has such a structure, the cooling air discharged into the gap G from the discharge port 35 of the fan unit 7 is guided only upward by the wind direction plate 21. Therefore, cooling can be performed most efficiently.

  According to the present embodiment, by mounting the fan unit 7 on the rack 3, it is possible to easily make a wind flow upward along the side surface of the rack 3. Therefore, the hot air discharged from the heat generating electrical component built-in units 5A and 5B arranged on the fan unit 7 can flow upward, and the hot air can be prevented from staying. Further, since the pair of wind direction plates 21 also serve as a support member used when installing the fan unit 7 inside the rack 3, the number of parts can be reduced.

  In this embodiment, since air is sucked into the case 17 of the fan unit 7 from the front side of the rack 3 and cooling air is sent upward from the side of the case 17, the rack 3 is placed indoors. Even if it is installed in a state where it is pressed against the wall, air necessary for cooling can be reliably sent into the rack 3.

  If the fan unit 7 is arranged in the rack 3 by using the wind direction plate 21 which is a dedicated rack support rail, and is installed under a unit (electronic device) with a built-in heating electrical component having a suction port on the side or the lower side. Thus, it is possible to always send cooled air as cooling air into the unit with built-in heat generating electrical parts.

  In the above embodiment, the pair of blowers 19 and 20 are used. However, if the size of the case 17 permits, the number of blowers may be increased as necessary. Further, as the blowers 19 and 20, an axial blower or the like can be used.

  According to the present invention, by mounting the fan unit on the rack, it is possible to easily make a wind flow upward along the side surface of the rack. Therefore, the hot air discharged from the heat generating electrical component built-in unit disposed on the fan unit can flow upward, and the hot air can be prevented from staying. Further, since the pair of wind direction plates also serves as a support member used when installing the fan unit inside the rack, the number of parts can be reduced.

DESCRIPTION OF SYMBOLS 1 Unit built-in electric device 3 Rack 5A Heat generating electric component built-in unit 5C Non-heat generating electric component built-in unit 7 Fan unit 9 Vertical frame 11 Frame frame 13 Side panel 15 Top plate panel 17 Case 19 Blower 19A Suction port 20 Blower 21 Wind direction plate 23 -29 Side wall 35 Exhaust port 37,38 Suction port 45 Power supply 47-51 Space 57 Power switch 59 Mounting plate G Gap

Claims (7)

A unit built-in electric device in which at least one heat generating electric component built-in unit having a heat generating component inside a rack and a fan unit for cooling the heat generating electric component built-in unit are arranged,
The fan unit is
A box-like shape having one or more outlets provided in each of the pair of side wall portions and one or more suction ports provided in at least one side wall portion of the remaining pair of side wall portions other than the pair of side wall portions. Case and
One or more blowers disposed inside the case so as to suck air from the one or more suction ports, and to discharge air from the one or more discharge ports provided in the pair of side walls, respectively;
A pair of wind direction plates provided to the case, respectively, for directing the flow of air discharged from the one or more outlets provided on the pair of side walls, respectively;
The unit built-in electric device, wherein the pair of wind direction plates also serve as a pair of support members for supporting the case to the rack.   The unit built-in electric device according to claim 1, wherein the suction port is provided in the at least one side wall so as to suck air from a front surface of the rack. A box-like shape having one or more outlets provided in each of the pair of side wall portions and one or more suction ports provided in at least one side wall portion of the remaining pair of side wall portions other than the pair of side wall portions. Case and
One or more blowers disposed inside the case so as to suck air from the one or more suction ports, and to discharge air from the one or more discharge ports provided in the pair of side walls, respectively;
Respectively provided with respect to the case, Bei Eteori a pair of wind direction plates for directing the flow of air discharged from the pair of side wall portions the one or more outlet respectively provided above,
The fan unit, wherein the pair of wind direction plates are a pair of support members for supporting the case on a rack . Before SL louver, first closes the first wall portion and said first wall portion and the lower end of the continuous and the gap facing the side wall portion so as to form a gap between said discharge port 2 4. The fan unit according to claim 3 , further comprising: a third wall portion that is continuous with at least both end portions of the first wall portion and blocks both ends of the gap. Inside the front SL case, power is disposed at the center thereof, a fan unit according to claim 3 in which a pair of the blower on opposite sides of said power source is disposed. In the case, the first space in which the power supply is disposed and the second and third spaces in which the pair of fans are disposed are partitioned by first and second partition walls. ,
A power switch is provided at a position corresponding to the first space and a first suction port is provided at a position corresponding to the second space on one side wall of the remaining pair of side walls. The fan unit according to claim 5 , wherein a second suction port is provided at a position corresponding to the third space. Each of the pair of fans is a centrifugal fan,
The outlet of the centrifugal blower communicates with the outlet;
The fan unit according to claim 6 , wherein a gap is formed between the suction port of the centrifugal blower and the case.

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