JPH0697688A - Cooling structure of electronic device - Google Patents

Abstract

PURPOSE:To acquire a cooling structure of an electronic device which can effectively cool an electronic device inside each rack by air taken into a shelter even if a number of racks are contained in the shelter. CONSTITUTION:A ventilation port 23a is provided to a bottom of a rack 23 and a ventilation port 23b is provided to a ceiling thereof. A suction port 28a for taking in air is provided to the part of a floor 28 in opposition to the ventilation port 23a of the rack 23 in a shelter 21, and a duct 33 for introducing air from the ventilation port 23b of the rack 23 to an evacuation hole 35a is formed of an upper board 30 of the shelter 21 and a ceiling board 31 opposing to the upper board 30.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cooling structure for electronic equipment housed in a rack in a shelter.

[0002]

2. Description of the Related Art In a communication shelter which is installed outdoors and accommodates a communication device, various kinds of electronic equipment constituting the communication equipment are warmed by heat generated from the communication equipment itself, and the electronic equipment has an upper limit temperature for ensuring performance. It is necessary to cool the electronic device so that the temperature does not rise further. FIGS. 3 and 4 show a conventional cooling structure for an electronic device housed in a shelter of this type.
Shown in.

The side wall of the shelter 1 is provided with an intake duct 2 on the lower side and an exhaust duct 3 on the upper side. The intake port 2a of the intake duct 2 is provided with an air filter 4 for dust prevention, and a fan 6 for forcibly taking the cool air outside the shelter 1 into the shelter 1. A fan 8 is also provided in the exhaust duct 3, and the air in the shelter 1 is forcibly discharged from the exhaust port 3a of the duct 3 by the fan 8.

A plurality of communication devices 10 are provided in the shelter 1.
Is provided. Each communication device 10 includes a rack 11 and a plurality of unitized electronic devices 13 housed in the rack 11, and a fan 15 for taking in air is also provided in the rack 11. In addition, a ventilation port 11a for taking in the air taken into the shelter 1 into the rack 11 is provided on the side wall at the bottom of the rack 11.
Ventilation port 11 for discharging the air in rack 11 on the top surface of 1
b is provided.

In this structure, the outside cold air introduced into the shelter 1 is forcibly taken into the rack 11 from the ventilation port 11a by the fan 15, and the inside of the rack 11 is lifted up.
The air that has cooled the electronic device 13 in the unit 1 is discharged to the outside of the rack 11 through the ventilation port 11b, and this air is discharged to the outside of the shelter 1 through the discharge port 3a.

However, according to this structure, when a large number of racks 11 are arranged in the shelter 1, the intake port 2a
The rack 11 located in the vicinity of is capable of sufficiently taking in cold air from outside, but the rack 11 located in a position away from the intake port 2a is blocked by the rack 11 located in the vicinity of the intake port 2a, and cool air is prevented. I couldn't get enough of it. Therefore, the electronic device 13 in the rack 11 cannot be cooled sufficiently, and various problems such as malfunction of the communication device, performance deterioration, failure, and shortening of the life of the electronic component occur.

Further, since a part of the air taken into the shelter 1 is discharged to the outside of the shelter 1 without passing through the rack 11, the cooling efficiency by the air taken into the shelter 1 was low.

[0008]

As described above, in the conventional cooling structure, when a large number of racks containing electronic devices are arranged in the shelter, the racks located at a position away from the intake port of the shelter are externally mounted. However, there is a problem in that it is impossible to sufficiently take in the cold air of the above, and there is also a problem that a part of the air taken into the shelter is discharged without being used for cooling the electronic device.

The present invention has been made in view of such conventional drawbacks, and even when a large number of racks are stored in the shelters, the air can be taken into the shelters for the electronic devices in the respective racks. It is an object of the present invention to provide a cooling structure for an electronic device that can efficiently cool the electronic device.

[0010]

According to the present invention, a rack for accommodating an electronic device is arranged in a shelter, and a cooling structure for an electronic device is provided for cooling the electronic device in the rack by external air taken into the shelter. In the above, the rack is provided with a first ventilation port on the bottom surface and a second ventilation port on the top surface, and the shelter is a portion of a floor surface facing the first ventilation port of the rack with outside air. And a duct for guiding the air discharged from the second ventilation port of the rack to the exhaust port on the side surface of the shelter by the intake port for taking in the air and the upper plate of the shelter and the ceiling plate facing the upper plate. It has a formed structure.

[0011]

In the cooling structure of the present invention, the first ventilation port formed on the bottom surface of the rack is made to face the intake port formed on the floor surface of the shelter, and the second ventilation hole formed on the top surface of the rack. The mouth communicates with the duct formed by the top plate and ceiling plate of the shelter, and this duct communicates with the exhaust port provided on the side surface of the shelter, so all the outside air taken in from the intake port passes through the rack. And then discharged from the exhaust port. Further, even when a plurality of racks are stored in the shelter, each rack has an independent cooling path, so that the electronic devices stored in each rack can be efficiently cooled.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described in detail below with reference to FIGS.

FIG. 1 is a sectional view for explaining the flow of air in the shelter, and FIG. 2 is an external view of the shelter.

In the outdoor communication shelter 21 according to the present invention, a plurality of communication devices 22 are provided inside.
These communication devices 22 are composed of a rack 23 and a plurality of unitized electronic devices 24 housed in the rack 23.

The rack 23 is provided with a ventilation port (first ventilation port) 23a on the bottom surface for taking in air into the rack. In this example, a detachable dustproof air filter is provided at the ventilation port 23a. It should be noted that this air filter is mounted on the rack 2 by opening the door (not shown) of the rack 23.
Can be exchanged within 3.

Further, a ventilation port (second ventilation port) 23b for discharging the air in the frame is provided on the top surface of the frame 23, and air is introduced into the frame 23 above the ventilation port 23b. A fan 26 for forcibly taking in is provided.

On the other hand, an intake port 28a is formed on the floor surface 28 of the shelter 21 so as to face the ventilation port 23a of each rack 23. A duct 33 is formed on the upper part of the shelter 21 by the upper plate 30 and a ceiling plate 31 facing the upper plate 30. The duct 33 is an exhaust port of an exhaust duct 35 provided on the upper side wall of the shelter 21.
35a, and the ventilation openings 23b of each rack 23.
It also communicates with.

In the above structure, the air forcibly taken into the shelter 21 from the intake port 28a is the ventilation port 23.
The cold air ascends into the rack 23 from a, cools the electronic device 24 in the rack 23 in the process of rising in the rack 23, and the warmed air reaches the duct 33 from the ventilation port 23b and the exhaust port.
It is discharged from the 35a to the outside of the shelter 21.

In this case, the intake port formed on the floor surface 28
Since the outside air taken into the shelter 21 from 28a passes through all the corresponding racks 23, the electronic devices 24 in the racks 23 are efficiently cooled. Further, since the plurality of racks 23 housed in the shelter 21 have independent cooling paths for each rack, the electronic devices 24 housed in each rack 23 are affected by the other racks 23. Can be cooled without

In this example, the ventilation holes 23b of each rack 23 are provided.
The warmed air discharged from the air passes through the common duct 33 and is discharged to the outside of the shelter 21, but a partition wall is also provided inside the duct 33 to discharge the air discharged from the ventilation holes 23b of the respective racks 23. The routes may be independent.

[0021]

As described above, in the cooling structure of the present invention, the first ventilation port formed on the bottom surface of the rack is opposed to the intake port formed on the floor surface of the shelter, and is attached to the top surface of the rack. The formed second ventilation port communicates with the duct formed in the upper part of the shelter, and since this duct communicates with the exhaust port provided on the side of the shelter, all air taken into the shelter from the intake port is suspended. It passes through the inside and is discharged from the exhaust port. Therefore, the electronic devices in the rack can be efficiently cooled by using the air taken into the shelter. Even when a plurality of racks are stored in the shelter, an independent cooling path is formed for each rack, so that the electronic devices stored in each rack can be cooled without being affected by other racks. it can.
Further, since the duct leading to the exhaust port is composed of the upper plate and the ceiling plate of the shelter, it is not necessary to provide a separate duct for each rack even when housing a plurality of racks in the shelter. It is easy to manufacture.

[Brief description of drawings]

FIG. 1 is a diagram illustrating an embodiment of the present invention and is a cross-sectional view illustrating a flow of air in a shelter.

FIG. 2 is an external view of the shelter.

FIG. 3 is an external view of a conventional shelter.

FIG. 4 is a diagram illustrating the flow of air in the shelter.

[Explanation of symbols]

 21 shelter 23 rack 23a first ventilation port 23b second ventilation port 24 electronic equipment 28 floor surface 28a intake port 30 top plate 31 ceiling plate 33 duct 35a exhaust port

Claims (1)

[Claims] 1. A cooling structure for an electronic device, wherein a rack for accommodating an electronic device is arranged in a shelter, and the electronic device in the rack is cooled by external air introduced into the shelter. No. 1 ventilation port is provided and a second ventilation port is provided on the top surface, and the shelter is provided with an intake port for taking in outside air at a portion of the floor facing the first ventilation port of the rack, Further, the upper plate of the shelter and the ceiling plate facing the upper plate form a duct for guiding the air discharged from the second ventilation port of the rack to the exhaust port on the side surface of the shelter. Cooling structure for electronic devices.