JP5966340B2 - Heat exchange device and heating element storage device using the same - Google Patents

Description

  The present invention relates to a heat exchange device and a heating element storage device using the 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. 8).

  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. 8, 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. Heat exchange is performed between the main body case 61, the first blower 112 for outside air and the second blower 113 for inside the cabinet provided in the main body case 61, and outdoor air and cabinet air in the main body case 61. 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. (In addition, as a prior art similar to this, Unexamined-Japanese-Patent No. 2000-161875)

JP 2000-161875 A

  In the conventional heat exchange apparatus 101, the first blower 112 and the second blower 113 use a centrifugal blower as can be seen from FIG. 8, and the rotational axis is set to the inlet of the heat exchanger 114. It is provided in parallel. Here, strictly speaking, in the centrifugal blower, the air to be blown out is not radial, but is swirled in the rotational direction. That is, according to the configuration shown in Patent Document 1, the air flow direction is non-uniform at the inlet of the heat exchanger 114, and as a result, the wind speed of the air flowing in the heat exchanger 114 is There is a problem of non-uniformity.

  As a result, the heat exchange efficiency of the heat exchanger 114 is to be lowered.

  Then, this invention aims at improving heat exchange efficiency.

And in order to achieve this purpose, the heat exchange device according to the present invention is:
The first intake port for the first environment is provided on the front surface or the lower surface,
The first first discharge port for environment provided on the front surface,
A main body case provided with a second intake port and a second discharge port for the second environment on the back surface;
In the main body case, a first environmental air introduction chamber having a first environmental air blower and a second environmental air introduction chamber having a second environmental air blower are provided, and
A heat exchanger for exchanging heat between the air in the first environment and the air in the second environment,
The heat exchanger is
A configuration in which a plurality of plates are polymerized in a state of being separated by a predetermined distance,
Provide air inlets for the first environment and the second environment on the two opposing surfaces formed in the stacking direction,
A first environmental air outlet is provided on one of the other surfaces formed in the stacking direction,
A second environment air outlet is provided on a surface opposite to the surface provided with the first environment air outlet;
The second environment for blower, the rotary shaft is a centrifugal type blower disposed substantially perpendicular to the second environmental air inlet of the heat exchanger,
A control unit having a control board built in a side surface of the second ambient air introduction chamber;
Oite on the side facing the second environment for blower control unit, the circulating air flow outlet above, which was provided with a circulating air flow inlet below, thereby, it is intended to achieve the intended purpose .

Although the present invention has as a second environment for blower, the rotary shaft is a centrifugal type blower disposed substantially perpendicular to the second environmental air inlet of the heat exchanger, the side surface of the second ambient air introducing chamber a control unit with a built-in control board, on the side facing the second environment for blower control unit, is provided with the opening up and down, thereby improving the heat exchange efficiency of the heat exchanger.

That is, the second environment for blower, parallel balloon air to the air inlet surface of the heat exchanger, and a control unit provided on the side surface of the second ambient air introducing chamber, the side surface of the second ambient air introducing chamber The air flowing into the air intake port of the heat exchanger is made uniform by flowing air from the air reservoir formed in the section into the control section. As a result, the heat exchanger flows at a uniform wind speed, and as a result, the heat exchange efficiency of the heat exchanger is improved.

The perspective view which shows the example of installation of one Embodiment of this invention 1A is a front perspective view showing a heat exchange device according to an embodiment of the present invention, and FIG. Side surface sectional drawing of the heat exchange apparatus of one Embodiment of this invention The disassembled perspective view of the heat exchanger of the heat exchange apparatus of one Embodiment of this invention. The perspective view of the heat exchanger of the heat exchange apparatus of one Embodiment of this invention The front exploded perspective view of the heat exchange device of one embodiment of the present invention. (A) Whole perspective view of the 2nd environmental air blower (inside air blower) of the heat exchange apparatus of one Embodiment of this invention, (b) Main part perspective view 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, on which a mobile phone base station 2 is provided. 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 and 3, the heat exchanging device 5 has a first intake port for external air (first environment) (hereinafter referred to as an external air intake port 7) on the lower surface of the main body case 6 and a first discharge port on the front surface. An outlet (hereinafter referred to as an outside air discharge port 8) is provided, and a second intake port (hereinafter referred to as an inside air intake port 9) and a second discharge port (hereinafter referred to as “inside air”) for the inside of the cabinet 3 (second environment, hereinafter referred to as inside air) are provided on the rear surface. The inside air discharge port 10) is provided. In the main body case 6, a first environmental air blower (hereinafter referred to as the external air blower 12) for outside air, a second environmental air blower (hereinafter referred to as the internal air blower 13) for internal air, And a heat exchanger 14 for performing heat exchange between the outside air and the inside air. The inside of the main body case 6 has a configuration in which the heat exchanger 14 is disposed between the inside air introduction chamber 51 provided in the upper portion and the outside air introduction chamber 50 provided in the lower portion.

  As shown in FIGS. 4 and 5, the heat exchanger 14 has a rectangular second synthetic resin-made second plate 16 on the surface of the first synthetic resin-made first plate 15. As shown in FIG. 5, a synthetic resin third plate 17 (hereinafter, a plurality of plates is used in the same manner) is polymerized as shown in FIG. Yes.

  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, with respect to the air path of the inside air, a short air lane is provided on the cabinet 3 side (back side), and a long air lane is provided on the outside air side (front side). On the other hand, about the air path of outside air, a long ventilation lane is provided in the cabinet 3 side (back side), and a short ventilation lane is provided in the outside air side (front side).

And the upper surface in FIG. 5 of the heat exchanger 14 superposed | polymerized in this way becomes the 2nd inlet 14b into which the air in the cabinet 3 flows in via the inside air inlet 9, This 2nd inlet 14b air flowing into the heat exchanger 14 from, and thus be caused to flow out into the cabinet 3 from the second outlet port 14 c which then provided in the lower right side of FIG. Note that the second outlet port 14 c is connected to the inside air discharge port 10.

Also, the outside air outside the cabinet 3, flows from the first inlet 14a provided on the lower surface in FIG. 5 would then be allowed to flow out to the cabinet 3 out of the first outlet port 14 d provided on the upper left side. The first outlet 14 d is connected to the outside air outlet 8.

  The outside air blowing device 12 is provided at a position in the outside air introduction chamber 50 so as to send air toward the first inlet 14a, and the inside air blowing device 13 is connected to the second inlet 14b in the inside air introduction chamber 51. It is provided to send air toward it. In the present embodiment, the outside air blowing device 12 and the inside air blowing device 13 are each composed of two centrifugal blowers.

  The details of the outside air blowing device 12 and the inside air blowing device 13 will be described using the inside air blowing device 13 as an example.

As shown in FIG. 6, in the inside air blower 13, two centrifugal blowers 13 a and 13 b are fixed to the same surface on a single blower fixing plate 18. The blower fixing plate 18 is provided with two circular holes that serve as suction ports for the blowers 13a and 13b. The fan shafts of the blowers 13a and 13b are fixed to the blower fixing plate 18 so as to be vertical. Further, the blower fixing plate 18 is provided with a partition plate 19 so as to bisect the space between the blowers 13a and 13b. As shown in FIG. 6, the inside air blower 13 is attached in the main body case 6 with the blowing side facing the second inlet 14 b of the heat exchanger 14. That is, the second inlet 14 of the heat exchanger 14
The fan shaft is placed perpendicular to the surface of the second inlet 14b so that the area b can be used effectively. Further, the tip of the partition plate 19 on the unfixed side and the surface of the second inflow port 14b of the heat exchanger 14 are attached with a gap. The partition plate 19 is provided so as to contact the front side and the back side of the main body case 6. A space (inside air chamber 19) is provided between the inside air inlet 9 and the blower fixing plate 18. (Such a configuration is the same for the outside air blower 12).

  Next, the operation of the heat exchange device 5 will be described. The air (inside air) heated to high temperature by the transmitter / receiver 4 in the cabinet 3 is sent into the main body case 6 from the inside air inlet 9 of the heat exchange device 5 by the inside air blower 13. On the other hand, cold outside air is sucked from the outside air inlet 7 by the operation of the outside air blower 12 and sent to the first inlet 14 a of 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 out into the cabinet 3 from the inside air discharge port 10, and the outside air is again outside air from the outside air discharge port 8. Will be released.

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

As shown in FIGS. 2, 3 , and 6 , the outside air discharge port 8 is provided with a blowout guide 20 on the downstream side so as to face the opening. The blowout guide 20 is open at the top, and on the other four surfaces (a surface facing the outside air discharge port 8, a side surface and a bottom surface adjacent to the outside air discharge port 8) so that the opening communicates with the outside air discharge port 8. It is what is enclosed.

  The flow of outside air with such a configuration will be described.

  When the outside air blower 12 is operated, outside air is sucked into the outside air introduction chamber 50 from the outside air inlet 7. And it is pressure | voltage-risen by the external air blower 12, and is sent in into the heat exchanger 14 from the 1st inflow port 14a. In the heat exchanger 14, the air passes through the air blowing lane described above, and is discharged to the outside air space through the first outlet 14 d and the outside air discharge port 8. However, it passes through the blowing guide 20 before being released into the outside air space. At this time, the air that has passed through the short air lane in the heat exchanger 14 is blown out from the lower portion of the outside air discharge port 8. The direction of the air that has passed through the short air blowing lane can be changed upward at the bottom of the blowing guide 20. Then, the air is discharged from the upper opening of the blowing guide 20 to the outside air space through the blowing guide 20. On the other hand, the air that has passed through the long air lane in the heat exchanger 14 is blown out from the upper part of the outside air discharge port 8. The air that has passed through this long air blowing lane is blown out to the upper part of the blowing guide 20 and is directly discharged from the upper opening of the blowing guide 20 to the outside air space.

  Thus, the air that has passed through the short air lane in the heat exchanger 14 passes through a long path in the blowout guide 20, and the air that has passed through the long air lane in one heat exchanger 14 is the air blowout guide 20. Take a short path within. That is, the path through which the air sent by the outside air blowing device 12 passes, regardless of which lane in the heat exchanger 14 passes, the path that passes from the first inlet 14a to the upper opening of the blowing guide 20 The difference can be kept small. Therefore, since the speed of the air passing through the heat exchanger 14 is made uniform, the overall heat exchange efficiency of the plate bodies (the first plate body 15, the second plate body 16, and the third plate body 17). Will be made uniform. That is, since the entire plate body is efficiently used for heat exchange, the overall heat exchange efficiency is improved.

In the present embodiment, the front wall of the blowing guide 20 (the surface facing the outside air discharge port 8) is provided in parallel with the front wall of the main body case 6, but the front surface of the main body case 6 as it goes upward. It is advisable to increase the distance from the wall. With such a configuration, the pressure loss above the outside air discharge port 8 is reduced, and the difference in the path that passes from the first inflow port 14a to the upper opening of the blowing guide 20 can be further reduced.

  Next, as shown in FIG. 7, the inside air introduction chamber 51 is provided with a control unit 22 along the side surface of the main body case 6. The controller 22 and the inside air introduction chamber 51 are partitioned by the controller partition plate 21. The controller partition plate 21 is provided with a circulating air inlet 21 a below the blower fixing plate 18 and a circulating wind outlet 21 b above the blower fixing plate 18.

  The flow of inside air with such a configuration will be described.

  When the inside air blower 13 is operated, the inside air is sucked into the inside air introduction chamber 51 from the inside air inlet 9. And it is pressure | voltage-risen by the internal air blower 13, and is sent in into the heat exchanger 14 from the 2nd inflow port 14b. In the heat exchanger 14, the air passes through the air blowing lane described above, and is discharged again into the cabinet 3 through the second outlet 14 c and the inside air discharge port 10.

  Here, a part of the air pressurized by the inside air blower 13 flows into the control unit 22 from the circulation air inlet 21 a provided in the control unit partition plate 21. The inflowing air receives heat generated by the control unit 22 and flows again into the inside air introduction chamber 51 from the circulation wind outlet 21b. That is, the control unit 22 is cooled by the air flowing in from the circulating air inlet 21a, and the operation of the control unit 22 is stabilized.

  The inside air blower 13 is provided with the rotation axis of a centrifugal blower substantially perpendicular to the surface of the second inflow port 14b. When the inside air blower 13 is operated, it first blows out in the horizontal direction (direction orthogonal to the rotation axis) and then flows in the second inflow port 14b with its flowing direction being changed by the inner wall surface of the main body case 6 or the like. However, in the vicinity of the connection portion between the control unit partition plate 21 and the blower fixing plate 18, the flow direction is changed abruptly, so that stagnation occurs in the air flow. Since the circulation air inlet 21a is provided in the portion where the stagnation occurs and communicates with the upstream side (negative pressure side), there is an effect that the flow of the air flowing into the heat exchanger 14 is made smooth. Moreover, since the air which circulates in the control part 22 from the stagnation location is made, the control part 22 is cooled, without reducing the air volume which flows into the heat exchanger 14. FIG.

The present invention as described above, on the side facing the second environment for blower control part, is provided with the opening up and down, thereby improving the heat exchange efficiency of the heat exchanger. Therefore, for example, it is extremely useful as a cooling facility for a communication equipment base station having a limited installation area and other outdoor installation equipment.

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 blowing device 13 Inside air blowing device 14 Heat exchanger 18 Blower fixed Plate 19 Partition plate 20 Blowout guide 21 Control part partition plate 21a Circulating wind inlet 21b Circulating wind outlet 22 Control part

Claims (5)

The first intake port for the first environment is provided on the front surface or the lower surface,
The first first discharge port for environment provided on the front surface,
A main body case provided with a second intake port and a second discharge port for the second environment on the back surface;
In the main body case, a first environmental air introduction chamber having a first environmental air blower and a second environmental air introduction chamber having a second environmental air blower are provided, and
A heat exchanger for exchanging heat between the air in the first environment and the air in the second environment,
The heat exchanger is
A configuration in which a plurality of plates are polymerized in a state of being separated by a predetermined distance,
Provide air inlets for the first environment and the second environment on the two opposing surfaces formed in the stacking direction,
A first environmental air outlet is provided on one of the other surfaces formed in the stacking direction,
A second environment air outlet is provided on a surface opposite to the surface provided with the first environment air outlet;
The second environment for blower, the rotary shaft is a centrifugal type blower disposed substantially perpendicular to the second environmental air inlet of the heat exchanger,
A control unit having a control board built in a side surface of the second ambient air introduction chamber;
Oite on the side facing the second environment for blower control unit, the circulating air flow outlet above the heat exchange apparatus provided with a circulating air flow inlet below. The second environment for blower, the heat exchanger apparatus according to claim 1, wherein the second environment air intake chamber attached to the blower fixing plate bisecting vertically. The heat exchange device according to claim 2, wherein the circulation air outlet and the circulation air inlet provided on a side surface of the control unit are provided at positions above and below the blower fixing plate. Wherein the circulating air flow inlet side is provided in the lower portion of the control unit, the heat exchange device according to claim 3, wherein the balloon is provided to face the side surface of the impeller of the second environment for blower. A heating element storage device using the heat exchange device according to claim 1.

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