JP5343530B2 - Heating element storage device - Google Patents

Description

  The present invention relates to a heating element storage device using a heat exchange device.

  For example, since a current of several tens of amperes or more flows in a mobile phone base station, it is also expressed as a heating element in a certain point. In other words, cooling is extremely important in order to stabilize the operation. Such a mobile phone base station has the following configuration in order to cool the base station. (See FIG. 13).

That is, although not shown in the figure, it has a configuration including a cabinet that houses a transmitter / receiver serving as a heating element, and a heat exchange device (101) that is a cooling device attached to an opening of the cabinet. As shown in FIG. 9, the structure of the heat exchange device 101 includes a first suction port 107 and a first discharge port 108 for outside air, and a second suction port 109 and a second discharge port 110 for use in the cabinet. The main body case 111, the first blower 112 for outside air and the second blower 113 for inside the cabinet provided in the main body case 111, and heat exchange between outdoor air and cabinet air are performed in the main body case 111. The heat exchanger 114 is included. (Note that Japanese Laid-Open Patent Publication No. 2000-161875 is a prior art similar to this).
JP 2000-161875 A

  In the above-described conventional cooling device, in order to keep the ambient temperature of the heating element (for example, a semiconductor) arranged in the cabinet below a predetermined temperature, a large amount of cooling air has to flow. In other words, since the heating element that dislikes the high temperature environment is distributed and arranged in the cabinet, the cooling air becomes a high temperature due to the heat generated by the heating element depending on where it is arranged, and the heating element cannot be cooled. An element will be created. Therefore, in order to keep the temperature below a predetermined temperature everywhere in the cabinet, cooling is conventionally performed by increasing the air volume of the cooling device. For this reason, the first blower 112 for the outside air and the second blower 113 for the inside of the cabinet use a blower having a large capacity, resulting in an increase in the size of the cooling device.

  Therefore, the present invention reduces the influence of the heat generating element on other heat generating elements by concentrating the places to be cooled by moving the heat in the cabinet, and makes the exhaust air of the cabinet higher temperature than before, The purpose is to downsize the cooling device by improving the cooling capacity of the cooling device, and consequently downsize the heating element storage device.

  In order to achieve this object, the present invention provides a cabinet having an air intake port and an air discharge port, the interior of which is divided into two sections by a partition plate, and one of the two sections is an electronic circuit. A heat generating part provided with a heating element, a heat radiating plate provided in the other compartment, a heat radiating part that collects and releases heat generated from the heat generating element, and the air intake is an outer wall of the heat generating part The partition plate is provided with an opening for communicating the heat generating portion and the heat radiating portion, and the heat generating body is provided with a heat transfer means for absorbing and moving the generated heat. A heating element storage device having a configuration in which the heating element and the radiator plate are connected through the partition plate, wherein the first ventilation is sent from the air intake port to the air discharge port. Path and the air intake through the opening and the release. Those having a second air flow path to be delivered to the outside from the air outlet after heat absorption in parts, thereby, is to achieve the intended purpose.

  As described above, the present invention has an air intake port and an air discharge port, the inside of which is divided into two sections by a partition plate, and one of the two sections is a heating element on which an electronic circuit is mounted. The other compartment is provided with a heat radiating plate to collect and release the heat generated from the heat generating element, and the air intake is provided on the outer wall of the heat generating part. The plate is provided with an opening for communicating the heat generating portion and the heat radiating portion, and the heat generating body is provided with a heat transfer means for absorbing and moving the generated heat. A first air passage that passes through the heat generating portion from the air intake and passes to the air outlet, passes through the opening from the air intake, After absorbing heat at the heat dissipating part, it is sent out from the air outlet. Since that is one having a second air feed path, a blowing air temperature from the discharge port can this be higher than the conventional, it is possible to improve the cooling capacity. That is, in the present invention, the heat transfer means can suppress an increase in the ambient temperature of the heating element located downstream due to the influence of the heating element located upstream. Compared to a higher temperature, the cooling capacity of the cooling device can be improved, so that the cooling device can be reduced in size, and as a result, the heating element storage device is reduced in size. .

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

(Embodiment 1)
In FIG. 1, reference numeral 1 denotes a building, and a rooftop 2 is provided with a heating element storage device 3 serving as a mobile phone base station. The heating element storage device 3 includes a box-shaped cabinet 4, a transmitter / receiver 5 provided in the cabinet 4, and a cooling device 6 provided at the front opening of the cabinet 4 so as to be opened and closed like a door. .

  FIG. 2 is an exploded view for explaining the internal configuration of the heating element storage device 3. As shown in FIG. 2, the cooling device 6 includes a first air inlet 7 for the outside air (first environment), a first outlet 8, and a second inside the cabinet 4 (second environment, hereinafter referred to as inside air). A main body case 11 having an intake port 9 and a second discharge port 10, a first blower fan 12 for the outside air provided in the main body case 11, and a second blower fan 13 for the inside of the cabinet 4, that is, the inside air, The main body case 11 includes a heat exchanger 14 that performs heat exchange between outside air and inside air. The 1st ventilation fan 12, the heat exchanger 14, and the 2nd ventilation fan 13 are arranged in a line from the bottom in this order.

  Although not shown in detail, the heat exchanger 14 has a rectangular configuration in which a plurality of synthetic resin plates are polymerized in a state of being spaced apart from each other by a predetermined distance. A plurality of rectifying walls are provided on the surface of the plate body to partition the surface into lanes. Between the superposed plates, air in the first environment (outside air) and air in the second environment (inside air) are alternately flowed to perform heat exchange between the cold outside air and the warm inside air.

  Now, according to the cooling device 6 as described above, the air (inside air) that has been heated by the transmitter / receiver 5 in the cabinet 4 is sucked into the second blower fan 13 from the second air inlet 9 of the cooling device 6. Is done. The air blown out from the second blower fan 13 is sent to the heat exchanger 14. On the other hand, the cold outside air is sucked from the first air inlet 7 by the operation of the first blower fan 12 and further sent to the heat exchanger 14. In the heat exchanger 14, heat exchange is performed between cold outside air and high temperature inside air, and the cooled inside air is blown into the cabinet 4 from the second discharge port 10, and the outside air is discharged from the first discharge port 8. It will be released again to the outside air.

  Next, the configuration within the cabinet 4 will be described. As shown in FIG. 3, a transmitter / receiver 5 provided on a substrate is provided in the cabinet 4 so as to be inserted from the cooling device 6 side (door side) with the substrate surface vertical. The substrates are arranged substantially in parallel. On the cooling device 6 side of the cabinet 4, an air discharge port 9 a that communicates with the second intake port 9 of the cooling device 6 and an air intake port 10 a that communicates with the second discharge port 10 of the cooling device 6 are provided. In the cabinet 4, the partition plate 16 that partitions the back surface 15 side of the cabinet 4, that is, the side facing the cooling device 6 (heat dissipating part 17) and the part provided with the transmitter / receiver 5 (heat generating part 18). Is provided. The partition plate 16 does not completely divide the heat radiating part 17 and the heat generating part 18, and an opening 19 is provided below the heat radiating part 17 and the heat generating part 18. A first circulation fan 20 that circulates the air in the cabinet 4 is provided above the heat radiating unit 17 and communicates with the air discharge port 9a (the second air intake port 9 of the cooling device 6). On the other hand, in order to circulate the air in the cabinet 4 also in the upper part of the heat generating part 18, a second circulation fan 21 is provided and communicates with the air discharge port 9a (the second air intake port 9 of the cooling device 6). .

  As shown in FIG. 4, the substrate 28 provided with the transmitter / receiver 5 generates heat generated from the substrate body 23 provided with the heating element 22, the heat radiating plate 24, and the heating element 22. It comprises heat transfer means 25 that receives and guides it to the heat sink 24. As the heat transfer means 25, for example, a heat pipe is used. The heat transfer means 25 is subjected to a heat insulation process so that heat is not released into the heat generating portion 18. As shown in FIG. 5, the substrate 28 is inserted from the opening side of the cabinet 4 with the heat radiating plate 24 side as the back side. The partition plate 16 is provided with a substrate insertion hole 26, and the heat sink 24 is passed through the substrate insertion hole 26. Thus, the heat radiating plate 24 is disposed in the heat radiating portion 17 and the substrate body 23 is disposed in the heat generating portion 18. As shown in FIG. 6, the heat radiating plate 24 protrudes from the heat radiating portion 17 so as to be parallel to the vertical direction.

  In the above configuration, the flow of air in the cabinet 4 will be described. The air cooled in the cooling device 6 is sent from the air intake port 10 a (second discharge port 10) of the cabinet 4 to the heat generating part 18 in the cabinet 4. In the heat generating part 18, a part of the cooling air is raised by the second circulation fan 21, and the heat generating part 18 is cooled as it is, to the air discharge port 9a (the second air intake port 9 of the cooling device 6). It will be sent (1st ventilation path). On the other hand, the remainder of the air that has flowed into the heat generating portion 18 is sucked into the heat radiating portion 17 from the opening 19 provided below the partition plate 16 by the operation of the first circulation fan 20. This cooling air ascends the heat radiating portion 17 and is sent from the first circulation fan 20 to the air discharge port 9a (second air intake port 9 of the cooling device 6) (second air supply path). On the other hand, the heat transfer means 25 moves the heat generated from the heating element 22 to the heat radiating plate 24, and the heat radiating portion 17 is at a high temperature. The inside of the cabinet 4 is cooled by the passage of the cooling air sucked into the heat radiating portion 17 having a high temperature.

  Thus, most of the heat generated from the heating element 22 of the transmitter / receiver 5 in the cabinet 4 is collected by the heat transfer means 25 in the heat radiating portion 17 and is cooled by the cooling air in the heat radiating portion 17. Therefore, an increase in the ambient temperature of the heat generating element 22 located downstream due to the influence of the heat generating element 22 positioned upstream can be suppressed, and since the heat generating element 22 does not exist downstream of the heat dissipating part 17, the heat dissipating part 17. The downstream temperature can be higher than that of the conventional cabinet, and the air in the cabinet 4 supplied to the cooling device 6 from the air discharge port 9a can be higher than that of the conventional cabinet. Therefore, in the cooling device 6, the temperature difference between the inside air and the outside air is increased, so that the cooling capacity is improved and the cooling device 6 can be downsized. As a result, the heating element storage device 3 can be downsized. it can.

  In FIG. 7, the substrate body 29 provided with the transmitter / receiver 5 has a heat transfer function. The heating element 22 on the substrate body 29 is in close contact with the substrate body 29 so as to facilitate heat transfer. A heat sink 24 is provided at the tip of the substrate body 29. According to such a configuration, since the heat can be received by the entire substrate body 29, there is an effect that the heat dissipation effect is enhanced.

  Further, as shown in FIG. 8, a flange 27 is provided between the heat dissipation plate 24 and the substrate 28 so as to be joined to the substrate insertion hole 26. A packing may be provided around the flange 27 to closely fit the board insertion hole 26 so as to partition the heat radiating portion 17 and the heat generating portion 18.

  Further, as shown in FIG. 9, the outer periphery of the flange 27 and the inner periphery of the substrate insertion hole 26 may be fitted. Furthermore, the outer peripheral side of the flange 27 may be a tapered type in which the heat radiating portion 17 side is made smaller. This taper causes the flange 27 to be brought into close contact with the board insertion hole 26 when the board 28 is pushed in. The flange 27 provided with the taper is preferably made of metal. The metal flange 27 expands due to the temperature rise of the heat generating portion 18 and the heat radiating portion 17, and the fitting density with the board insertion hole 26 becomes stronger.

  In the present embodiment, the first circulation fan 20 provided on the heat radiating unit 17 side and the second circulation fan 21 provided on the heat generating unit 18 side are provided separately, but the heat radiating unit 17 and the heat generating unit are provided. A circulation fan may be provided in the vicinity of the air discharge port 9a (second intake port 9) after the 18 air paths merge.

(Embodiment 2)
A second embodiment of the present invention will be described with reference to FIGS.

  FIG. 10 is an exploded view of the heating element storage device 3 according to the second embodiment. Since the configuration of the cooling device 6 is the same as that of the first embodiment, the description thereof is omitted.

  As shown in FIGS. 10 to 12, in the cabinet 4, as in the first embodiment, the transmitter / receiver 5 provided on the substrate is placed on the cooling device 6 side (door side) with the substrate surface vertical. And a plurality of substrates are arranged substantially in parallel. On the cooling device 6 side of the cabinet 4, an air discharge port 9 a that communicates with the second intake port 9 of the cooling device 6 and an air intake port 10 a that communicates with the second discharge port 10 of the cooling device 6 are provided. In the cabinet 4, the partition plate 16 that partitions the back surface 15 side of the cabinet 4, that is, the side facing the cooling device 6 (heat dissipating part 17) and the part provided with the transmitter / receiver 5 (heat generating part 18). Is provided. The partition plate 16 completely partitions the heat radiating portion 17 and the heat generating portion 18. The wall surface of the cabinet 4 below the heat radiating portion 17 is provided with a heat radiating portion suction port 30 for sucking air from the outside. On the wall surface of the cabinet 4 on the upper side of the heat radiating portion 17, a heat radiating portion discharge port 31 for discharging air to the outside is provided. Further, a heat radiating unit fan 32 is provided on the upstream side of the heat radiating unit discharge port 31.

  According to the said structure, the heat which generate | occur | produced from the transmitter / receiver 5 is collected by the thermal radiation part 17 by a heat transfer means (not shown in FIGS. 10-12). That is, the heat generating part 18 provided with the transmitter / receiver 5 is in a state of being completely isolated from the outside and is in a state in which dust or the like does not enter. The cold air outside is sucked into the heat radiating part 17 where the heat is collected by the operation of the heat radiating part fan 32 from the heat radiating part suction port 30. The cold air removes heat from the heat radiating plate 24 to cool the heat radiating portion 17. The air that has passed through the heat radiating portion 17 is discharged to the outside from the heat radiating portion discharge port 31 again.

  As in the first embodiment, the partition plate 16 is provided with a substrate insertion hole 26. A substrate 28 (heat radiating plate 24) is passed through the substrate insertion hole 26 and joined to the partition plate 16 with a flange. .

  The present invention has a cabinet having an air inlet and an air outlet, the interior of which is divided into two compartments by a partition plate, and one of the two compartments is a heat generator provided with a heating element on which an electronic circuit is mounted. And the other section is provided with a heat radiating plate, a heat radiating portion that collects and releases the heat generated from the heating element, the air intake is provided on the outer wall of the heat generating portion, An opening for communicating the heat generating part and the heat radiating part is provided, and the heat generating body is provided with a heat moving means for absorbing and moving the generated heat, and the heat moving means passes through the partition plate and passes through the partition plate. A heat generating body and the heat radiating plate are connected, a first air passage that passes through the heat generating portion from the air intake port and is sent to the air discharge port, and passes through the opening from the air intake port, After the heat absorption, a second feed is sent out from the air outlet. Since those having a path, thereby improving the heat exchange efficiency. That is, in the present invention, the heat transfer means concentrates the high temperature part in the cabinet on the heat dissipating part, so that it is useful for cooling a cabinet, room or the like provided with a device that generates heat inside. .

The perspective view which shows the example of installation of one Embodiment of this invention 1 is an exploded perspective view of a heating element storage device according to an embodiment of the present invention. Sectional drawing of the heat generating body storage apparatus (cabinet side) of one Embodiment of this invention The perspective view of the board | substrate used for the heat generating body accommodating apparatus of one Embodiment of this invention. The attachment figure of the board | substrate used for the heat generating body storage apparatus of one Embodiment of this invention The perspective view of the thermal radiation part of the heat generating body accommodating apparatus of one Embodiment of this invention. The perspective view of the board | substrate used for the heat generating body accommodating apparatus of one Embodiment of this invention. The perspective view of the flange part of the board | substrate used for the heat generating body accommodating apparatus of one Embodiment of this invention. The perspective view of the flange part of the board | substrate used for the heat generating body accommodating apparatus of one Embodiment of this invention. The disassembled perspective view of the heat generating body accommodating apparatus of the 2nd Embodiment of this invention. Sectional drawing of the heat generating body accommodating apparatus (cabinet side) of the 2nd Embodiment of this invention. The perspective view of the thermal radiation part of the heat generating body accommodating apparatus of the 2nd Embodiment of this invention. Configuration diagram of conventional heat exchanger

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Building 2 Rooftop 3 Heating-element storage apparatus 4 Cabinet 5 Transmitter / receiver 6 Cooling device 7 1st inlet port 8 1st discharge port 9 2nd intake port 9a Air exhaust port 10 2nd discharge port 10a Air intake port 11 Main body case DESCRIPTION OF SYMBOLS 12 1st ventilation fan 13 2nd ventilation fan 14 Heat exchanger 15 Back surface 16 Partition plate 17 Heat radiation part 18 Heat generation part 19 Opening 20 1st circulation fan 21 2nd circulation fan 22 Heating body element 23 Substrate body 24 Heat radiation plate 25 Heat transfer means 26 Substrate insertion hole 27 Flange 28 Substrate 29 Substrate body 30 Heat sink inlet 31 Heat sink outlet 32 Heat sink fan

Claims (15)

A cabinet having an air inlet and an air outlet, the interior of which is divided into two compartments by a partition plate, and one of the two compartments is a heat generating portion provided with a heating element on which an electronic circuit is mounted, and the other In the partition, a heat radiating plate is provided as a heat radiating portion that collects and releases the heat generated from the heat generating element, the air intake is provided on an outer wall of the heat generating portion, and the partition plate includes the heat generating portion and the heat radiating portion. An opening communicating with the heat radiating portion is provided, and the heat generating body is provided with a heat moving means that absorbs and moves the generated heat, and the heat moving means penetrates the partition plate and the heat generating body and the heat generating means. A heating element storage device having a configuration in which a heat sink is connected, wherein the first ventilation path that passes through the heat generating portion from the air intake and sends to the air outlet, and passes through the opening from the air intake. , After absorbing heat at the heat radiating part, from the air outlet Heating medium storage device having a second air flow path to be delivered. The heating element storage device according to claim 1, wherein a blower fan is provided in the vicinity of the air discharge port to mix and discharge the air in the first blower path and the second blower path. The heating element storage device according to claim 1, wherein a first blower fan is provided in the first blower path, and a second blower fan is provided in the vicinity of the air discharge port in the second blower path. The heating element storage device according to any one of claims 1 to 3 , further comprising a cooling device that is attached to the cabinet and that cools the air blown from the air discharge port and then sends the air to the air intake port. The heating element is a circuit board mounted with electronic components, said heat transfer means, according to claim 1-4 which is brought into contact with one a high heat-generating component on the circuit board, and the other is brought into contact with the heat radiating plate The heating element storage device according to any one of the above. The heating element storage device according to any one of claims 1 to 5 , wherein the heat transfer means is a heat pipe. The heating element storage device according to any one of claims 1 to 6, wherein the heat transfer means in the heating portion is subjected to a heat insulation process. The heat generating body is configured by integrating the heat transfer means and the heat radiating plate, and the partition plate is provided with a heat radiating plate through hole, and the heat generating body penetrates the heat radiating plate through hole from the heat generating portion side. heating medium storage device according to any one claims 1 to 7 to be installed in. The heating element storage device according to claim 8 , wherein the heating element is provided with a partition plate bonding plate that is flange-bonded so as to close the through-hole of the heat dissipation plate, and is closely bonded to the partition plate. The heating element storage device according to claim 9 , wherein packing is provided on a joint surface between the partition plate joining plate and the partition plate. The heating element storage device according to claim 8, wherein a partition plate fitting plate is provided on the heating element, and the partition plate fitting plate is fitted and fixed to the heat radiating plate through hole. The heating element storage device according to claim 11 , wherein packing is provided around the partition plate fitting plate. The heating element storage device according to claim 11 or 12, wherein the partition plate fitting plate is a metal. The heating element, there is mounted an electronic circuit on a substrate, according to claim 1 to 13 any one, characterized in that arranged so as to be perpendicular to the inlet parallel and the air in a vertical direction Heating element storage device. The heating element storage device according to any one of claims 1 to 14 , wherein the opening provided in the partition plate is provided in a lower portion of the cabinet.

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