JP2013038113A - Heating unit housing - Google Patents

Abstract

The present invention relates to a heating element storage device such as a base station of a mobile phone, and an object thereof is to enable continuous operation even when an internal blower fails.
A cabinet 1 is provided with a first inside air blower 18 that circulates the inside air, and a heat exchanger 5 includes an outside air blower 12 and a second inside air blower 13 provided in a main body case 6, and a heat exchanger. 14, the first inside air blower 18 and the second inside air blower 13 are arranged in series with respect to the inside air air passage 53 that circulates in the cabinet 3, and the main body case 6 includes the outside air inlet 7 and the outside air blower 12. An outside air introduction chamber 50 having an inside air intake port 9 and a second inside air blower 13, and the outside air introduction chamber 50 is provided with an outside air damper 21 communicating with the inside of the cabinet 3. Since the introduction chamber 51 includes the exhaust damper 20 that communicates with the outside of the cabinet 3, when one of the blowers stops due to a failure or the like, it is possible to continue the operation of the entire apparatus while suppressing a decrease in capacity.
[Selection] Figure 2

Description

  The present invention relates to a cooling technique for a heating element storage device that stores a heating element, such as a base station that stores a communication device of a mobile phone.

  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. 12).

  That is, it has a configuration including a cabinet in which a transmitter / receiver serving as a heating element is stored, and a heat exchange device (101) mounted in an opening of the cabinet. As shown in FIG. 12, 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. The first blower 112 is arranged with the fan shaft facing the first suction port 107 so that the first suction port 107 and the suction port of the blower itself overlap. The second fan 113 is similarly arranged with the fan shaft facing the second suction port 109. (Note that Japanese Laid-Open Patent Publication No. 2000-161875 is a prior art similar to this).

JP 2000-156580 A

  However, mobile phone base stations are becoming increasingly important as social infrastructure, and are required to continue operation even in the event of a failure.

  In the conventional heat exchange device, only one of the first air blower 112 for outside air and the second blower 113 for inside the cabinet is used for the air path, so either one of them fails. If stopped, the heat exchange device 101 will not function and the base station will stop.

  Patent Document 1 discloses a technique in which a plurality of external air blowers and cabinet internal blowers are installed in parallel in each air passage. However, when a blower is installed in parallel, when one of them stops, the stopped blower increases the air resistance of the entire air passage, and one blower that operates also exhibits the capacity of one. I know I won't.

  Therefore, an object of the present invention is to continue the operation of the heating element storage device itself while minimizing a decrease in capacity even when a blower fails.

In order to achieve this object, the present invention
A cabinet with a heating element inside,
A heating element storage device configured with a heat exchange device for cooling the air in the cabinet,
In the cabinet, a first inside air blower that circulates the air inside (hereinafter, inside air) is provided,
The heat exchange device
A main body case provided with an outside air inlet and an outside air outlet for air outside the cabinet (hereinafter referred to as outside air) on the front, and an inside air inlet and inside air outlet for inside air on the back,
An outside air blower and a second inside air blower provided in the main body case;
A heat exchanger for exchanging heat between outside air and inside air in the main body case,
The first room air blower and the second room air blower are arranged in series with respect to the room air flow path circulating in the cabinet,
The heat exchanger has a configuration in which a plurality of plates are polymerized in a state of being separated by a predetermined interval,
Outside air and inside air inlets provided on two opposing surfaces formed in the stacking direction;
An outside air outlet provided on one of the other surfaces formed in the stacking direction;
It has an inside air air outlet provided on the surface opposite to the surface provided with the outside air outlet,
The main body case includes an outside air introduction chamber having an outside air inlet and an outside air blower,
An inside air inlet and an inside air introduction chamber equipped with a second inside air blower,
The outside air introduction chamber includes an outside air damper that communicates with the cabinet,
The inside air introduction chamber is provided with an exhaust damper that communicates with the outside of the cabinet, thereby achieving the intended purpose.

  As described above, in the present invention, the cabinet is provided with the first inside air blower that circulates the inside air, and the heat exchanging device is provided with the outside air intake port and the outside air discharge port for the outside air on the front surface and for the inside air on the back surface. A main body case provided with an inside air intake port and an inside air discharge port, an outside air fan and a second inside air fan provided in the body case, and a heat exchanger for exchanging heat between the outside air and the inside air in the body case. And the first room air blower and the second room air blower are arranged in series with respect to the room air flow path circulating in the cabinet, and the heat exchanger is in a state where a plurality of plates are separated from each other by a predetermined distance. It has a superposed structure, and the outside air and inside air inlets provided on two opposing surfaces formed in the stacking direction, and the outside air air outlet provided on one of the other surfaces formed in the stacking direction, Opposite to the surface provided with this outdoor air outlet The main body case has an outside air introduction chamber provided with an outside air intake port and an outside air blower, and an inside air introduction chamber provided with an inside air intake port and a second inside air blower, Since the outside air introduction chamber is provided with an outside air damper that communicates with the inside of the cabinet, and the inside air introduction chamber is provided with an exhaust damper that communicates with the outside of the cabinet, a heat exchange device or a blower provided in the cabinet Even when one of the devices stops due to a failure or the like, the entire apparatus can be continuously operated while suppressing a decrease in capacity.

  That is, even when either the first inside air blower or the second inside air blower is stopped, the first inside air blower and the second inside air blower are arranged in series. It is not a half of when two units are operating. Therefore, it is possible to suppress a reduction in the blowing capacity.

The perspective view which shows the example of installation of one Embodiment of this invention Schematic which shows the heat generating body accommodating apparatus of one Embodiment of this invention. (A) Rear perspective view of the heat exchange device, (b) Rear perspective view (A) Front perspective view, (b) Front perspective view of the heat exchange device Configuration diagram of heat exchanger of the same heat exchanger The perspective view of the heat exchanger of the heat exchanger Normal operation pattern of the heating element storage device Operation pattern diagram when the inside air blower of the heating element storage device fails Operation pattern diagram when the outside air blower of the heating element storage device fails (A) Schematic view of the outside air damper of the heating element storage device, (b) Cross-sectional view when opened, (c) Cross-sectional view when closed Detailed view of the decorative panel of the heating element storage device Configuration diagram of conventional heat exchanger

  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 mobile phone base station 2 is provided on the roof as a heating element storage device. The base station 2 includes a box-shaped cabinet 3, a transmitter / receiver 4 provided in the cabinet 3, and a heat exchange device 5 provided at the front opening of the cabinet 3 so as to be opened and closed like a door.

  As shown in FIGS. 2 to 4, the heat exchange device 5 is provided with an outside air introduction chamber 50 and an inside air introduction chamber 51 on the upper and lower sides with the heat exchanger 14 sandwiched in the main body case 6. The main body case 6 is provided with an outside air inlet 7 and an outside air outlet 8 for outside air on the front side, and has an inside air inlet 9 and an inside air outlet 10 for the inside of the cabinet 3 on the back side. That is, the outside air inlet 7 is provided in the outside air introduction chamber 50, and the inside air inlet 9 is provided in the inside air introduction chamber 51. Further, the outside air introduction chamber 50 includes an outside air blower 12 for outside air, and the inside air introduction chamber 51 includes a blower for inside air (hereinafter, the second inside air blower 13). The heat exchanger 14 performs heat exchange between outside air and inside air in the main body case 6.

  3 is an external perspective view and a perspective view of the back side of the heat exchange device 5, and FIG. 4 is an external perspective view and a perspective view of the front side.

  As shown in FIG. 3, the inside air inlet 9 is formed so as to protrude obliquely from the upper end of the main body case 6.

  As shown in FIGS. 5 and 6, the heat exchanger 14 has a rectangular synthetic resin-made second plate body 16, a second synthetic resin-made second plate body 16 on the surface of a rectangular synthetic resin-made first plate body 15. A third plate 17 made of synthetic resin (hereinafter, a plurality of plates is used in the same manner) was polymerized on the surface of the plate 16 as shown in FIG. It is configured.

  Although not shown, a plurality of rectifying walls are provided on the surfaces of the plate bodies 15, 16, and 17 to partition the surfaces into lanes. The plate bodies 15, 16, and 17 have a rectangular shape that is elongated in the vertical direction, and the rectifying wall extends from one end of the plate body serving as the inflow port toward the other end side. The rectifying wall is shaped to bend toward one long side before the other end, and is connected to the outlet. By such a plate (rectifying wall), a plurality of substantially L-shaped air lanes are formed on the plate. According to such a heat exchanger 14, for the inside air, a short air lane is provided on the cabinet 3 side, and a long air lane is provided on the outside air side. On the other hand, for the outside air, a long ventilation lane is provided on the cabinet 3 side, and a short ventilation lane is provided on the outside air side.

  And the upper surface in FIG. 6 of the heat exchanger 14 superposed | polymerized in this way becomes the 2nd inflow port 14b into which the air in the cabinet 3 flows in via the inside air inlet 9, This 2nd inflow port 14b Then, the air that has flowed into the heat exchanger 14 is then discharged into the cabinet 3 from the second outlet 14d provided on the lower right side of FIG. The second outlet 14d is connected to the inside air discharge port 10.

  Moreover, the outside air outside the cabinet 3 flows in from the first inflow port 14a provided on the lower surface in FIG. 6, and flows out of the cabinet 3 from the first outflow port 14c provided on the upper left side. The first outlet 14c is connected to the outside air outlet 8.

  The outside air blower 12 is provided at a position in the outside air introduction chamber 50 so as to send air toward the first inflow port 14a, and the second inside air blower 13 is connected to the second inflow port 14b in the inside air introduction chamber 51. It is provided to send air toward it. In the present embodiment, the outside air blower 12 and the second inside air blower 13 are respectively centrifugal blowers.

  As shown in FIG. 2, the transmitter / receiver 4 is provided in the cabinet 3 as described above, and the first inside air blower 18 is provided in the middle of the inside air air passage 53. Therefore, the first room air blower 18 and the second room air blower 13 are arranged in series with respect to the room air flow path 53.

  The inside air introduction chamber 51 is provided with an exhaust damper 20 on the outside air wall. The exhaust damper 20 is provided on the downstream side of the inside air air passage 53 relative to the second inside air blower 13, that is, on the second inflow port 14 b side of the heat exchanger 14. On the other hand, the outside air introduction chamber 50 is provided with an outside air damper 21 on the wall on the cabinet 3 side. The outside air damper 21 is provided downstream of the outside air blower 12 in the outside air air passage 52, that is, on the first inflow port 14a side.

  FIG. 10 is a detailed view of the outside air damper 21. As described above, the outside air damper 21 is provided so as to communicate between the outside air introduction chamber 50 and the cabinet 3 when opened. The open air damper 21 shown in FIG. 10 opens and closes an opening portion when a flat damper blade 56 rotates around a damper shaft 55. The damper blade 56 is opened and closed by a damper motor 57 connected to the damper shaft 55. The damper blade 56 has a rectangular shape, and a damper shaft 55 is provided in parallel to the longitudinal direction, and the longitudinal direction is disposed along the bottom surface of the heat exchanger 14. The form of the outside air damper 21 is one example, and may not be the above configuration as long as it opens and closes the opening that communicates the outside air introduction chamber 50 and the cabinet 3.

  Further, in the present embodiment, only the outside air damper 21 has been described, but the exhaust damper 20 can have the same configuration.

  The cooling operation of the base station 2 (heating element storage device) of the mobile phone having such a configuration will be described.

  First, a state without abnormality such as a failure will be briefly described with reference to FIG. In the operation state of the base station 2, the temperature in the cabinet 3 increases with the operation of the transmitter / receiver 4. The air in the cabinet 3 forms an inside air passage 53 that circulates again from the inside of the cabinet 3 through the heat exchanger 14 into the cabinet 3 by the operation of the first inside air blower 18 and the second inside air blower 13. On the other hand, the outside air flows into the heat exchanging device 5 from the outside air inlet 7 by the operation of the outside air blower 12, and forms an outside air passage 52 that passes through the heat exchanger 14 and is discharged to the outside air again.

  During normal operation in which such a blower (the first inside air blower 18, the second inside air blower 13, and the outside air blower 12) is not malfunctioning, as shown in FIG. 7, by forming the outside air air passage 52 and the inside air air passage 53, Heat is exchanged between cold outside air and warm inside air in the heat exchanger 14, and the cooled inside air is supplied into the cabinet 3. That is, the amount of heat generated in the transmitter / receiver 4 is transferred to the outside air passage 52 and discharged, so that the inside of the cabinet 3 is cooled.

  Here, the most characteristic part in the present embodiment will be described.

  First, as shown in FIG. 8, the case where the outside air blower 12 fails will be described. When the outside air blower 12 breaks down, the air blowing capacity for forming the outside air passage 52 (shown in FIG. 7) is lost, and thus the temperature in the cabinet 3 increases steadily. Therefore, the outside air damper 21 and the exhaust damper 20 are opened. Then, the outside air is introduced into the cabinet 3 through the outside air inlet 7 and the outside air damper 21 by the operation of the first inside air blower 18 and the second inside air blower 13. That is, by introducing cold outside air into the cabinet 3, the temperature rise in the cabinet 3 is suppressed. The outside air that has passed through the cabinet 3 forms a second outside air passage 54 that passes through the inside air inlet 9 and the exhaust damper 20 and is discharged to the outside air again. Since the resistance passing through the heat exchanger 14 is large, the amount of outside air entering the heat exchanger 14 from the first inlet 14a and the second inlet 14b is very small, and the outside air inlet 7 → the outside air damper 21 → the cabinet 3 The amount of air flowing through the second outside air passage 54 from inside to inside air inlet 9 to exhaust damper 20 becomes almost the same.

  Further, since the outside air damper 21 is located closer to the first inflow port 14a than the outside air blower 12, the second outside air passage 54 is smoothly formed. Similarly, since the exhaust damper 20 is located on the second inlet 14b side of the second inside air blower 13, the exhaust damper 20 smoothly moves to the exhaust damper 20 along the flow created by the second inside air blower 13 or the first inside air blower 18. A flowing second outdoor air passage 54 is formed.

  Next, a case where one of the first room air blower 18 and the second room air blower 13 fails will be described. As shown in FIG. 9, the case where the 2nd inside air blower 13 fails is demonstrated.

  In this case, the flow of the inside air passage 53 is formed only by the first inside air blower 18. As a matter of course, the amount of air blown together with the second inside air blower 13 is lower than when two units are operated, but since the air amount is arranged in series with the inside air air passage 53, the reduction in the amount of air blow is smaller than that of one unit. For example, when two fans with the same rating are arranged in series as the first inside air blower 18 and the second inside air blower 13, when one unit breaks down, an air flow rate that is more than a half of the two units operating is obtained. It is done.

  In addition, when one of the first inside air blower 18 and the second inside air blower 13 fails and a sufficient cooling effect cannot be obtained by operating one unit, the outside air damper is the same as when the outside air blower 12 breaks down. 21. The cooling effect can be enhanced by opening the exhaust damper 20 to form the second outdoor air passage 54 (shown in FIG. 8).

  Further, as shown in FIG. 3, the inside air intake port 9 having a shape protruding obliquely creates an air flow obliquely downward. Accordingly, when either the first inside air blower 18 or the second inside air blower 13 breaks down, the flow smoothly flows toward the exhaust damper 20.

  In any case, this is an auxiliary operation pattern when it is desired to ensure continuous operation as the base station 2 as a whole, and a failed blower is promptly repaired or replaced.

  As shown in FIG. 11, a decorative panel 22 serving as an outer shell of the base station 2 is provided on the outside air side of the heat exchange device 5. The decorative panel 22 is provided with an outside air intake opening 23 that communicates with the outside air intake port 7 and an outside air discharge opening 24 that communicates with the outside air discharge port 8. A partition plate 25 is provided between the outside air intake opening 23 and the outside air discharge opening 24 so that the intake outside air and the discharged outside air are not mixed in the decorative panel 22.

  And when either one of the 1st inside air blower 18 and the 2nd inside air blower 13 fails, especially when it is operating only with the 2nd inside air blower 13, explanation is given when the exhaust damper 20 is opened. In this case, the air that has flowed into the decorative panel 22 from the second inside air blower 13 through the exhaust damper 20 flows to the outside air discharge opening 24 and is discharged to the outside air without greatly changing the flow direction. That is, it is possible to reduce the resistance to the decorative panel 22 and to suppress the decrease in the blowing amount even at the time of failure.

  As described above, in the present invention, the cabinet is provided with the first inside air blower that circulates the inside air, and the heat exchanging device is provided with the outside air intake port and the outside air discharge port for the outside air on the front surface and for the inside air on the back surface. A main body case provided with an inside air intake port and an inside air discharge port, an outside air fan and a second inside air fan provided in the body case, and a heat exchanger for exchanging heat between the outside air and the inside air in the body case. And the first room air blower and the second room air blower are arranged in series with respect to the room air flow path circulating in the cabinet, and the heat exchanger is in a state where a plurality of plates are separated from each other by a predetermined distance. It has a superposed structure, and the outside air and inside air inlets provided on two opposing surfaces formed in the stacking direction, and the outside air air outlet provided on one of the other surfaces formed in the stacking direction, Opposite to the surface provided with this outdoor air outlet The main body case has an outside air introduction chamber provided with an outside air intake port and an outside air blower, and an inside air introduction chamber provided with an inside air intake port and a second inside air blower, The outside air introduction chamber is provided with an outside air damper that communicates with the inside of the cabinet, and the inside air introduction chamber is provided with an exhaust damper that communicates with the outside of the cabinet. Even when one of the devices stops due to a failure or the like, the entire apparatus can be continuously operated while suppressing a decrease in capacity. Therefore, for example, it is extremely useful as a cooling facility for communication equipment base stations that require continuous operation and other outdoor equipment that requires continuous operation.

DESCRIPTION OF SYMBOLS 1 Building 2 Base station 3 Cabinet 4 Transmitter / receiver 5 Heat exchange device 6 Main body case 7 Outside air inlet 8 Outside air outlet 9 Inside air inlet 10 Inside air outlet 12 Outside air blower 13 2nd inside air blower 14 Heat exchanger 15 (No. 1) plate body 16 (second) plate body 17 (third) plate body 18 first inside air blower 20 exhaust damper 21 outside air damper 22 decorative panel 23 outside air intake opening 24 outside air discharge opening 25 partition plate 50 outside air introduction Chamber 51 Inside air introduction chamber 52 Outside air passage 53 Inside air passage 54 Second outside air passage

Claims (4)

A cabinet with a heating element inside,
A heating element storage device configured with a heat exchange device for cooling the air in the cabinet,
In the cabinet, a first inside air blower that circulates the air inside (hereinafter, inside air) is provided,
The heat exchange device
A main body case provided with an outside air inlet and an outside air outlet for air outside the cabinet (hereinafter referred to as outside air) on the front, and an inside air inlet and inside air outlet for inside air on the back,
An outside air blower and a second inside air blower provided in the main body case;
A heat exchanger for exchanging heat between outside air and inside air in the main body case,
The first room air blower and the second room air blower are arranged in series with respect to the room air flow path circulating in the cabinet,
The heat exchanger has a configuration in which a plurality of plates are polymerized in a state of being separated by a predetermined interval,
Outside air and inside air inlets provided on two opposing surfaces formed in the stacking direction;
An outside air outlet provided on one of the other surfaces formed in the stacking direction;
It has an inside air air outlet provided on the surface opposite to the surface provided with the outside air outlet,
The main body case includes an outside air introduction chamber having an outside air inlet and an outside air blower,
An inside air inlet and an inside air introduction chamber equipped with a second inside air blower,
The outside air introduction chamber includes an outside air damper that communicates with the cabinet,
A heating element storage device provided with an exhaust damper communicating with the outside of the cabinet in the inside air introduction chamber. The heating element storage device according to claim 1, wherein when the outside air blower stops, the outside air damper and the exhaust damper are opened. The heating element storage device according to claim 1, wherein when either one of the first inside air blower and the second inside air blower stops, the outside air damper and the exhaust damper are opened. The heating element storage device according to any one of claims 1 to 3, wherein the exhaust damper is provided between the second blower and the inside air inlet.

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