JP5640513B2 - COOLING DEVICE AND ELECTRONIC DEVICE USING THE SAME - Google Patents

Description

  The present invention relates to a cooling device used for an electronic device installed outdoors, for example, and an electronic device incorporating the same.

  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 the mobile phone base station, which is also a heating element, is extremely important in order to stabilize its operation.

  In such a base station, as a result of recent technological development, the devices housed therein are updated, and the amount of heat generation tends to increase. Further, as the amount of communication increases, there is a tendency to accommodate as many devices as possible while effectively using the space in the base station.

  In such a background, a cooling device is increasingly attached to the outer wall surface so as not to hinder the space in the base station.

  On the other hand, a conventional cooling device is attached to a door of a base station that can be opened or closed, or is attached to be embedded in a wall surface of the base station (for example, Patent Document 1).

  In such a cooling device, the maintenance is performed by opening the door and then opening the back side of the cooling device. In addition, even when it is attached to the wall, maintenance is performed from the back side by taking a space for maintenance in the base station.

JP 2009-168396 A

  However, in recent base stations, the space inside the base station has been used effectively, and it has become a situation that the space for the cooling device itself and the space for maintenance cannot be secured sufficiently.

  Therefore, the present invention is to attach the cooling device to the wall of the base station from the outside, so that the outside of the base station, that is, the front surface of the cooling device is a maintenance port, and the maintenance port cannot be easily opened. It is intended.

And in order to achieve this purpose, the cooling device of the present invention comprises:
A main body case having a first intake port and a first discharge port for the first environment on the front surface, and a second intake port and a second discharge port for the second environment on the back surface;
A first environmental air blower and a second environmental air blower provided in the main body case;
A heat exchanger for exchanging heat between air in the first environment and air in the second environment in the main body case;
Furthermore, an inner lid that closes the front side of the section provided with the second environmental air blower,
A U-shaped perimeter, and a front panel covering the front side of the main body case;
Bending the upper side of the inner lid to the front side to provide a hooking part,
The upper side of the front panel is bent in a U-shaped cross section, and the lower side of the front panel is substantially the same height as the bottom surface of the main body case at a position lower than the surface provided with screw holes. The front panel is hooked with the upper side to the hooking part and the lower side part is screwed and fixed from the bottom side , and the first environmental air blower is the main body. A drain pan provided in the lower part of the case and having a bottom surface of the main body case as a drain pan, a drain hole provided in the drain pan is provided immediately below the screw fixing hole of the front panel. To achieve.

As described above, the cooling device of the present invention has a main body case in which the first intake port and the first discharge port for the first environment are provided on the front surface, and the second intake port and the second discharge port for the second environment are provided on the back surface. A first environmental air blower and a second environmental air blower provided in the main body case, and a heat exchanger for exchanging heat between the air in the first environment and the air in the second environment in the main body case And an inner lid that closes the front side of the compartment provided with the second environmental air blower, and a front panel that is formed in a U-shape and covers the front side of the main body case, The upper side of the inner lid is bent to the front side to provide a hooking portion, the upper side of the front panel is bent in a U-shaped cross section, and the lower side of the front panel has a surface provided with screw holes, It becomes almost the same height as the bottom of the main body case at a position lower than the surface Has become the lower surface of the two-stage, the front panel, as well as multiply pull the upper side to the hook portion, lower portion and screwed from the bottom side, the first environment for blower, a lower portion of the main body case The drain hole provided in the drain pan is provided directly below the screw fixing hole of the front panel, and is attached to the wall surface from the outside. Maintenance can be performed and the screw is not exposed to the outside, so that it is difficult to be stolen.

The perspective view which shows the example of installation of the electronic device of the 1st Embodiment of this invention Cross section of the cooling device External perspective view of the cooling device (a) Front panel attached, (b) Front panel removed Expanded cross-sectional view of the main part (A) Expanded sectional view of the main part of the lower part, (b) Bottom view Internal lid perspective view Installation details of the inner lid

  Hereinafter, the present embodiment will be described with reference to the drawings.

(Embodiment 1)
In FIG. 1, a base station 1 of a cellular phone has a transmitter / receiver (not shown) housed therein. Such a base station 1 is installed in various places. The base station 1 includes a box-shaped cabinet 2 and a transmitter / receiver provided in the cabinet 2. A cooling device 3 is attached to one outer wall surface of the cabinet 2.

  A schematic configuration of the cooling device 3 will be described with reference to FIG. The cooling device 3 is configured to suck in outside air (hereinafter referred to as outside air) serving as the first environment and air in the cabinet 2 (hereinafter referred to as inside air) serving as the second environment. That is, the cooling device 3 has an outside air inlet 5, an outside air outlet 6, and an inside air inlet 7 and an inside air outlet 8 for the cabinet 2 in the main body case 4. The cooling device 3 includes an outside air blower 9 for outside air, an inside air blower 10 for inside the cabinet 2, and a heat exchanger 11 that performs heat exchange between outside air and air inside the cabinet 2.

  With such a configuration, the cooling device 3 cools the transmitter / receiver by the heat exchanger 11. That is, a current of several tens of amperes or more flows in the transmitter / receiver, and the temperature rises accordingly. If such a high temperature of the transmitter / receiver is left unattended, its characteristics become unstable. When the cooling device 3 is operated, the hot air in the cabinet 2 is supplied again into the cabinet 2 through the heat exchanger 11 by the inside air blower 10. On the other hand, the outside air having a temperature lower than that of the inside air is discharged to the outside air through the heat exchanger 11 by the outside air blower 9. In the heat exchanger 11, heat exchange is performed between the high-temperature inside air and the low-temperature outside air, and the inside air is cooled and supplied to the cabinet 2, and the inside of the cabinet 2 is cooled. Thus, the heat exchanger 11 cools the inside of the cabinet 2 by exchanging heat with the outside air, thereby preventing the transmitter / receiver from becoming unstable.

  Next, the largest characteristic part in the present embodiment will be described.

  As shown in FIG. 3A, the cooling device 3 includes a front panel 12 on the front side. The front panel 12 opens the outside air inlet 5 and the outside air outlet 6. FIG. 3B shows a state in which the front panel 12 is removed. When the front panel 12 is removed, the heat exchanger 11 and the outside air blower 9 are exposed. An inner lid 13 is provided between the inside air blower 10 and the front panel 12. The inner lid 13 has a packing around and is pressed against the frame of the main body case 4 to block the space in which the inside air blower 10 is provided from the outside air side.

  Next, a more detailed description will be given with reference to FIGS.

  As shown in FIG. 4, the inner lid 13 is provided so as to close the opening on the front side of the inside air blower 10. A packing (not shown) is stuck around the inner lid 13 and is in close contact with the frame of the main body case 4 and the upper side of the heat exchanger 11. Furthermore, a hooking portion 13a bent at an angle of less than 90 degrees on the front side is provided on the upper side of the inner lid 13.

  On the other hand, the upper side of the front panel 12 is bent into a U-shaped cross section. Then, the U-shaped upper side of the front panel 12 is hooked to the hook portion 13a.

  A screw fixing hole 12 a is provided on the lower side of the front panel 12. This screwing hole 12 a is provided at a position closer to the top surface by a predetermined distance (a distance that can be confirmed by hand) than the bottom surface of the main body case 4. That is, the lower side of the front panel 12 has two levels: a surface provided with the screwing holes 12a and a lowermost surface that is substantially the same height as the bottom surface 4a of the body case 4 at a position lower than the surface.

  According to such a configuration, the cooling device 3 attached to the wall surface of the base station 1 is provided with the screw holes 12a from the bottom first from the outside of the base station 1 when performing maintenance after installation. Find and remove this screw. Then, the front panel 12 hooked on the hooking portion 13a is removed. Since the outside air blower 9 is exposed in this state, maintenance is possible. When performing maintenance of the heat exchanger 11 and the inside air blower 10, the inner lid 13 may be removed. That is, no maintenance space is required in the base station 1, and maintenance can be easily performed from the outside. In the assembled state, the fixing screw cannot be confirmed from the front side of the front panel 12, and therefore, it is effective in preventing mischief and theft.

  Moreover, the section of the bottom surface 4a of the main body case 4 is a section through which the outside air is communicated, and sometimes water such as rain may enter. That is, a drain hole 14 b is provided on the bottom surface 4 a of the main body case 4. The drain hole 14b is provided directly below the screwing hole 12a, and also serves as an opening for inserting a screwdriver or the like when the front panel 12 is attached or detached. The bottom surface 4 a is composed of a bottom frame 4 c of the main body case 4 and a drain pan 14. In other words, the bottom surface 4 a is configured by the bottom frame 4 c around the front surface except for the front surface and the drain pan 14 at the other portions.

  According to such a configuration, the drain hole 14b can share the drain hole and the opening leading to the screwing hole 12a for fixing the front panel 12. The drain pan 14 can be easily separated from the main body case 4 without affecting the strength of the main body case 4.

  Further, as shown in FIG. 6, the inner lid 13 is configured in a dish shape by providing a wall surface 13b whose periphery is raised to the main body case 4 side and further providing a flange-shaped peripheral edge portion 13c on the outer side. . On the main body case 4 side, as shown in FIG. 7, a seal wall 4 d is provided so that the top part contacts the bottom of the inner lid 13. The seal wall 4d is provided so as to fit inside the wall surface 13b of the inner lid 13. And packing (not shown) is affixed on the part which contacts the main body case 4 and the heat exchanger 11 of the peripheral part 13c. A packing (not shown) is also attached around the bottom surface of the inner lid 13.

  According to such a configuration, the top portion of the seal wall 4 d provided in the main body case 4 is in close contact with the packing provided around the bottom surface of the inner lid 13. The peripheral edge 13 c of the inner lid 13 is in close contact with the frame of the main body case 4 and the upper side of the heat exchanger 11. That is, the inner lid 13 is double-sealed, and the degree of sealing of the inside air ventilation portion is ensured.

  Furthermore, such a seal structure is also used for other plate material joint portions (joint portions between the top plate and the side plate of the body case 4).

As described above, the cooling device of the present invention has a main body case in which the first intake port and the first discharge port for the first environment are provided on the front surface, and the second intake port and the second discharge port for the second environment are provided on the back surface. When,
A first environmental air blower and a second environmental air blower provided in the main body case;
A heat exchanger for exchanging heat between air in the first environment and air in the second environment in the main body case;
Furthermore, an inner lid that closes the front side of the section provided with the second environmental air blower,
A U-shaped perimeter, and a front panel covering the front side of the main body case;
Bending the upper side of the inner lid to the front side to provide a hooking part,
The front panel is for hooking the upper side to the hook part and fixing the lower side part with screws from the bottom side,
It can also be used for a front panel of an air conditioner attached to a wall surface.

DESCRIPTION OF SYMBOLS 1 Base station 2 Cabinet 3 Cooling device 4 Main body case 4a Bottom surface 4c Bottom frame 4d Seal wall 5 Outside air inlet 6 Outside air outlet 7 Inside air inlet 8 Inside air outlet 9 Outside air blower 10 Inside air blower 11 Heat exchanger 12 Front panel 12a Screw Stop hole 13 Inner lid 13a Hook part 13b Wall surface 13c Peripheral part 14 Drain pan 14b Drain hole

Claims (4)

A main body case having a first intake port and a first discharge port for the first environment on the front surface, and a second intake port and a second discharge port for the second environment on the back surface;
A first environmental air blower and a second environmental air blower provided in the main body case;
A heat exchanger for exchanging heat between air in the first environment and air in the second environment in the main body case;
Furthermore, an inner lid that closes the front side of the section provided with the second environmental air blower,
A U-shaped perimeter, and a front panel covering the front side of the main body case;
Bending the upper side of the inner lid to the front side to provide a hooking part,
The upper side of the front panel is bent in a U-shaped cross section, and the lower side of the front panel is substantially the same height as the bottom surface of the main body case at a position lower than the surface provided with screw holes. It has two steps on the bottom surface, and the front panel hooks the upper side to the hooking part, and the lower side part is fixed with screws from the bottom side,
The first environmental air blower is provided at a lower portion of the main body case,
The bottom of the body case is a drain pan,
The drain hole provided in the drain pan is a cooling device provided directly below the screw fixing hole of the front panel. The cooling device according to claim 1, wherein the bottom surface of the main body case has three sides excluding the front side as a frame portion of the main body case, and a portion surrounded by the frame portion is the drain pan. The inner lid is formed in a dish shape by raising the periphery and providing a wall surface, and at the end of the wall surface, a flange extending to the outer peripheral side is provided,
The main body case side is provided with a seal wall that fits inside the wall surface around the inner lid,
Paste packing around the surface of the flange and the bottom of the inner lid,
The cooling device according to claim 1 or 2, wherein a top portion of the seal wall and a bottom surface portion of the inner lid are in contact with each other, and a frame of the main body case and the flange are in contact with each other. The electronic device carrying the cooling device as described in any one of Claims 1-3.

Images