JP3296181B2 - Electronic device cooling structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a cooling structure for an electronic device such as a computer.

[0002]

2. Description of the Related Art FIG. 6 is a perspective view of an electronic device illustrating a conventional method of mounting a blower and a cooling structure.
In FIG. 6, reference numeral 21 denotes a frame of the electronic device;
Is an electronic unit to be cooled, 25 is a blower unit, 2
Reference numeral 6 denotes a filter for preventing dust.

In this prior art, four sirocco blowers 25a are used, and the blower unit 25 is mounted on a front panel 25b. The blower unit 25 is mounted on a blower box 24 located immediately below the electronic knits 22 and 23, and supplies temperature-controlled air under the floor to the electronic units 22 and 23.

[0004]

The above-mentioned prior art has a problem that even if one of the four blowers fails, the blower unit 25 must be taken out and maintenance and replacement cannot be performed unless the electronic device main body is stopped. there were.

Further, in the prior art, when redundancy is provided so that the remaining unit can be cooled even if one unit fails, as shown in FIG. There is a problem that the air discharged from the normally operating blower 25a is sucked in again to cause a circulating phenomenon, thereby lowering the cooling performance.

In the prior art, since the discharge of the blower is directed upward, the cooling air supplied to the electronic unit is
In order to make it as uniform as possible, a certain distance must be maintained between the discharge of the blower and the electronic unit, and there is a problem that the ratio of the cooling unit to the height of the device is large.

Further, in the prior art, when cooling an electronic unit at a remote position in the apparatus, since a blower is individually mounted, there is a problem that power consumption increases and parts increase.

Further, in the prior art, since one filter for preventing dust is mounted per blower box, it is necessary to stop the electronic device main body when removing the filter during replacement or cleaning.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a cooling structure of an electronic device which enables maintenance and replacement of a blower even while the electronic device is operating, and which does not cause a cooling air circulation phenomenon.

Another object of the present invention is to provide a cooling structure for an electronic device in which the ratio of the cooling unit to the height of the device is reduced and the mounting density is increased.

Another object of the present invention is to provide a cooling structure of an electronic device that simultaneously cools other electronic units without using a new blower.

It is another object of the present invention to provide a cooling structure for an electronic device that enables a filter for preventing dust to be replaced while the electronic device is operating.

[0013]

According to the present invention, the above object is achieved by partitioning the inside of a box in which a blower is mounted with walls so as to be independent spaces.

The other object is achieved by displacing the blower in a horizontal direction from immediately below the electronic unit to bend the flow of the cooling air.

The other object is achieved by using a distribution duct to guide cooling air from an air chamber where the cooling air gathers.

The other object is achieved by dividing the dust prevention filter so as to be paired with the blower.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a cooling structure for an electronic device according to the present invention will be described below in detail with reference to the drawings. 1 and 2 are perspective views of one embodiment of an electronic device according to the present invention. 1 and 2, reference numeral 1 denotes a frame of an electronic device, 2 to 7 electronic units to be cooled, 8 a blower box, and 9 a blower unit.

In this embodiment, three sirocco blowers 9a are used for cooling the electronic unit. The sirocco-type blowers 9a are attached to the front panel 9b one by one to constitute the blower unit 9. The electronic units 2 to 7 to be cooled can be cooled down to a specified temperature or less by operating two of the blower units 9, and therefore, by adding one blower unit, redundancy is provided. Even if one of the units fails, the operation of the electronic unit is not affected. In addition, a blower unit that has failed can be replaced while the electronic device is operating.

FIG. 3 is a sectional view of the blower box 8 as viewed from the front. In the blower box 8, the blower units 9 are completely separated from each other by a thin wall 8 a. In the blower box 8, one of the blowers is hardly affected by an adjacent blower, and one of the blowers is stopped due to a failure. Also, since the cooling air circulating through the failed blower as in the prior art is suppressed, the deterioration of the cooling performance can be minimized.
The wall 8a also has a function of protecting an operator from danger of touching a rotating part of a blower that is operating next to the blower unit 9 during maintenance when the blower unit 9 is operated.

FIGS. 4 and 5 are sectional views of the blower box 8 as viewed from the side. FIG. 4 shows a state where the blower unit 9 is mounted and operating, and FIG. 5 shows a state where the blower unit 9 is replaced. In the present embodiment, the blower box 8 is shifted in a horizontal direction from immediately below the electronic unit 6, and the discharge port of the sirocco-type blower 9a is turned sideways. Thereby, the cooling air discharged from the three blowers is once collected in the air chamber 11 which is a space immediately below the electronic unit 6. As a result, the distance from the outlet of the blower to the electronic unit 6 can also be obtained, so that the positional relationship between the blower box 8 and the electronic unit 6 in the height direction can be substantially contacted, and the blower box 8 is located at the height of the electronic device. , And the size of the entire electronic device can be reduced.

The air chamber 11 has a square hole at the position of the discharge port of the sirocco-type blower 9a, and has a door 11a for closing the square hole. The door 11a is designed to rotate around one side as a fulcrum. When the blower unit 9 is attached, the door 11a is opened by being physically pushed by a discharge port of the blower. When it is pulled out of the box 8, it has a structure in which it is closed by the force of a spring. Thereby, the blower unit 9
This prevents the cooling air discharged from the other air blower from the air chamber 11 from being leaked to the outside when it is removed.

In this embodiment, in addition to the electronic units 2 to 6 just above the air chamber 11, as shown in FIG. 1, an electronic unit 7 for horizontally passing cooling air is mounted at a remote position. I have. To cool the electronic unit 7, the air chamber 1
1, a hole is formed in the side of the distribution duct 12 as shown in FIGS.
-14 are used to guide the cooling air. Then, the heated cooling air is discharged outside the electronic device using the distribution ducts 15 and 16. Since the cooling air is guided by the distribution duct in this manner, a blower dedicated to the electronic unit 7 is not mounted.
An increase in power consumption and an increase in parts can be prevented.

The filter 10 for preventing dust is divided for each blower unit 9 and attached to the lower part of the blower box 8.

Thus, when the filter 10 is periodically cleaned or replaced, only the blower unit located just above the target filter needs to be stopped, and the operation can be performed while the electronic device itself is operating.

[0025]

As described above, according to the present invention,
Prevents the cooling air from circulating when the blower is stopped while the electronic device is operating, and prevents the cooling air from leaking during maintenance and replacement of the blower. This has a great effect on ensuring reliability.

Also, since the rotating part is not touched,
Worker safety can be ensured. Further, since the ratio of the cooling unit to the height of the cooling unit is reduced, the height of the electronic device can be reduced and the mounting density can be increased.

Also, by cooling the electronic devices at distant locations collectively, it is possible to prevent an increase in power consumption and an increase in the number of components due to the addition of a blower.

In addition, when the filter is cleaned or replaced, the operation can be performed while the electronic device is operated.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a state in which a blower unit and a filter are taken out in an electronic device according to an embodiment of the present invention.

FIG. 2 is a perspective view when the viewpoint in FIG. 1 is rotated 90 ° to the right.

FIG. 3 is a sectional view of the blower box as viewed from the front.

FIG. 4 is a cross-sectional view of a state where the blower unit is attached to the blower box, as viewed from a side.

FIG. 5 is a cross-sectional view of a state where the blower unit is taken in and out of the blower box, as viewed from the side.

FIG. 6 is a perspective view showing a state in which a blower unit is taken out of the electronic device according to the related art.

FIG. 7 is a perspective view showing a cooling air circulation phenomenon in a conventional fan unit.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Frame of electronic device 2-7 Electronic unit 8 Blower box 8a Wall 9 Blower unit 9a Sirocco type blower 9b Front panel 10 Filter for dust prevention 11 Air chamber 11a Door 12-16 Distribution duct

────────────────────────────────────────────────── ─── Continuation of front page (56) References JP-A-4-5898 (JP, A) JP-A-6-104585 (JP, A) JP-A-7-22770 (JP, A) JP-A-5-58 103708 (JP, A) JP-A-2-272796 (JP, A) JP-A-8-88489 (JP, A) JP-A-4-126000 (JP, A) JP-A-5-248768 (JP, A) Japanese Utility Model Application Showa 64-29895 (JP, U) Japanese Utility Model Application Hei 3-3030 (JP, U) Japanese Utility Model Application Showa 57-24797 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) H05K 7/20 H05K 7/18 H05K 7/14

Claims (2)

(57) [Claims] 1. An electronic device for cooling an operating electronic unit mounted on a housing, a frame or the like by a plurality of blowers, wherein a blower box accommodating the plurality of blowers.
Is shifted horizontally from directly below the electronic unit.
And the wall is partitioned by a wall so as to store one inside each of the blower boxes, thereby suppressing the influence of adjacent blowers , and furthermore, the blower is provided directly below the electronic unit.
Collect cooling air from the multiple blowers adjacent to the box
Air chamber is provided to the air chamber from the blower box.
The cooling air of the blower is supplied, and the flow of the cooling air is bent in the air chamber.
And supplying the cooling air to the electronic unit . 2. The blower is mounted on the blower box.
Then, the cooling air inlet of the air chamber opens, and the blower is turned on.
When removed from the blower box, the cooling of the air chamber
Leakage of cooling air from the air chamber by closing the air inlet
The cooling of the electronic device according to claim 1, wherein the cooling is performed.
Construction.