JPH04115599A - Cooling structure of electronic equipment - Google Patents

Abstract

PURPOSE:To prevent a drop in cooling performance by installing an air capacity control box in a power source housing section which mounts a second power supply unit in the case when a second system is not mounted. CONSTITUTION:A first power supply unit 30-1 and a second power supply unit 30-2 are fitted in parallel in the lower part of a first electronic unit 10-1. A first fan unit 20-1 is used to forcibly cool the power supply units 30-1, and 30-2, and the electronic unit 10-1 while a second fan unit 20-1 is used to forcibly cool a second electronic unit 10-2 respectively. In the case when the second system is not mounted, an air capacity control box 50 with ventilation holes arrayed is installed to a bottom board 51 and a top board 52 in a power supply housing section 5-2 to which the second power supply unit is mounted. Due to this construction, an equivalent amount of air flows in the air capacity control box and the power supply unit 30-1 respectively, which prevents a drop in the cooling performance of the power supply unit 30-1. Moreover, the electronic unit 10-1 can be cooled uniformly.

Description

[Detailed Description of the Invention] [Summary] A cooling structure for an electronic device that relates to an electronic device in which multiple systems are stacked in a housing in multiple stages, particularly when one or two of the multiple systems are not installed. The purpose of this technology is to provide a cooling structure for electronic devices in which the cooling performance does not deteriorate even when only the first system is installed, and each system consists of an electronic unit, a fan unit, and a power supply unit. , a first electronic unit, a first fan unit, a second electronic unit, and a second fan unit are superimposed on the housing in the order from the bottom to the top, and the first
The first power supply unit and the second power supply unit are installed in parallel below the electronic unit, and the first fan unit connects the first and second power supply units and the first electronic unit, In an electronic device configured such that the second electronic unit is forcibly cooled by the second fan unit, when the second system is not installed, the power supply housing part in which the second power supply unit is mounted is provided with a , an air volume adjustment box with ventilation holes arranged on the lower plate and the upper plate is installed.

[Industrial application field]

The present invention relates to an electronic device in which a plurality of systems are stacked in a housing in multiple stages, and particularly to a cooling structure for an electronic device when one or two of the plurality of systems are not installed.

With the demand for smaller size and higher speed electronic devices, electronic units, in which semiconductors and other circuit parts are densely mounted on printed boards and large numbers of such printed boards are housed in a box-shaped shelf, have become popular in recent years. Widely used in electronic equipment.

On the other hand, the reliability of electronic devices equipped with the above-mentioned electronic units largely depends on the temperature inside the device. Therefore, a cooling structure for equipment with good cooling performance is required.

C. Prior Art] Figure 4 is a perspective view of an electronic device equipped with multiple systems;
FIG. 5 is a cross-sectional view of such an electronic device.

4 and 5, the electronic equipment includes a first electronic unit 10-1, a first fan unit 20-1, and a first
A first system (for example, a transmitter) is configured by a power supply unit 30-1, and a second electronic unit 10-2, a second fan unit 20-2, and a second power supply unit 3.
0-2 constitute a second system (for example, a receiving section).

First electronic unit 10-1 and second electronic unit 10
-2 has the same shape, and each electronic unit is
A box-shaped shelf with an open front consisting of left and right side plates, a lower plate, an upper plate, and a backboard 14 on which connectors are arranged.
A large number of printed boards 1 on which desired circuit components are mounted
2 are plugged in and installed in parallel.

In addition, the front opening of such a shelf II is connected to the front plate 1.
3, and ventilation holes are arranged on the lower and upper plates to allow air to flow vertically inside the electronic unit.

The first and second electronic units 10-1 and 10-2 are arranged so that the back surfaces of the left and right ends of the front frame of the shelf 11 are brought into close contact with the surfaces of the left and right front frame pillars of the casing l, respectively, and fixed with screws. Therefore, it is installed in the housing L.

The first fan unit 20-1 and the second fan unit 20-2 have the same shape, and a desired number (for example, 6 or 8 fan units) of each fan unit are installed in the lower part of the shallow frame-shaped case. The fans 21 are arranged in a grid pattern. A number of tilted air regulating plates 22 are attached above the parallel fans 21 to partition the inside of the frame into a front space diagonally above and a rear space diagonally below.

In addition, the first and second fan units 20-1, 20-2
In this case, suction holes 23 are arranged on each front frame plate, and an exhaust window 24 is provided on the rear frame plate.

The fan unit described above is mounted on the housing L by bringing the back surfaces of both left and right ends of the front frame plate into close contact with the surfaces of the left and right front frame pillars of the housing L, and securing them with screws. There is.

First power supply unit 30-1 and second power supply unit 30
-2 has the same shape, and each power supply unit is
A box-shaped power shelf 3 with an open front, consisting of left and right side plates, a lower plate, an upper plate, and a backboard with connectors arranged.
1, a printed board 32 on which desired power supply circuit components are mounted.
It is configured by plugging in.

The width of each power shelf 31 is half the width of the shelf 11 of the electronic unit.

Further, the front opening of the power supply shelf 31 is closed with the operation plate 33, and ventilation holes are arranged on the lower plate and the upper plate to allow air to flow vertically inside the power supply unit.

The first power supply unit 30-1 brings the back surface of the left side extension part of the operation panel 33 into close contact with the surface of the left front frame column of the casing l,
The second power supply unit 30-2 is mounted on the casing 1 by screwing, and the second power supply unit 30-2 is mounted on the right front frame column of the casing 1 with the back side of the right side extension of the operation panel 33 closely touching the surface of the right front frame pillar of the casing 1. let me,
It is mounted on the housing I by screwing it.

The above-described first system and second system include a housing 1 and a first electronic unit 10-1 . First fan unit 20-1. Second electronic unit 10-2
．． The second fan units 20-2 are stacked in multiple stages in this order.

On the other hand, in the case I, below the first electronic unit l0-1, power supply housing parts 5-1 and 5-2 are arranged side by side on the left and right, and one power supply housing part 5-1 has a first power supply housing part 5-1. unit 30
-1 and the second power supply unit 30-2 are respectively attached to the other power supply housing section 5-2.

Since the electronic device is configured as described above, when the fans 21 of the respective fan units 20-1 and 20-2 are driven to rotate, the first fan unit 20-1 rotates as shown in FIG. Upon operation, the cooled air is transferred from the lower air inlet 2 of the housing 1 to the first power supply unit 30-1.
It is sucked into the second power supply unit 30-2 and cools each power supply unit.

After that, it rises and enters the shelf 11 of the first electronic unit 10-1, rises between the parallel printed boards 12, passes through the first electronic unit 10-1 while being cooled, and is transferred to the first fan unit 20-. Enter 1.

The air blown by the fan 21 (i.e. the first electronic unit l)
The air that has cooled the fan unit 20-1 is blocked from going straight up by the air conditioning plate 22 and is guided diagonally upward and rearward, passes through the ventilation window 24 of the first fan unit 20-1, and then reaches the first fan unit. The air is discharged to the rear of the housing 20-1, rises, passes through the air exhaust port 3 provided in the ceiling of the housing I, and is discharged to the outside of the housing I.

On the other hand, when the second fan unit 20-2 operates, air is sucked in through the suction hole 23 provided on the front surface of the first fan unit 20-1 below the second fan unit 20-2, and the first fan It enters the second electronic unit to-2 through the front space of the unit 20-1, rises between the parallel printed boards 12, and cools the second electronic unit l0-.
2 and enters the second fan unit 20-2.

The air blown by the fan 21 of the second fan unit 20-2 (that is, the air that has cooled the second electronic unit 1O-2) is blocked from flowing directly upward by the air baffle plate 22 and is guided diagonally upward and backward. The second fan unit 20-2
The air is discharged to the rear of the second fan unit 20-2 through the exhaust window 24, rises, passes through the exhaust port 3 provided in the ceiling of the housing 1, and is discharged to the outside of the housing 1.

By the way, for electronic devices that are equipped with only the first system for the time being, in anticipation of adding a second system in the future,
Generally, the housing structure is as described above.

As described above, an electronic device equipped with only the first system has a first power supply unit 30- as shown in FIG.
The power supply accommodation section 5-2 in which the second power supply unit 30-2 next to the second power supply unit 1 is mounted, the accommodation section of the second electronic unit 10-2, and the accommodation section of the second fan unit 20-2 are each formed into a cavity. It has become.

For this purpose, a cover 40 is attached to the front surface of the power supply accommodating section 5-2 to close it off, and a cover (not shown) is attached to the front surface of the accommodating section of the second electronic unit l0-2 and the accommodating section of the second fan unit 2o-2. ) to complete the appearance of electronic equipment.

[Problem to be solved by the invention]

However, when the first fan unit 20-1 is driven, although the first power supply unit 30-1 is mounted in one power supply housing part 5-1, the adjacent power supply housing part 5-2 is installed in the hollow power supply housing part 5-1. Therefore, the air resistance of the power supply housing parts of the two is different.

Therefore, the amount of air passing through the first power supply unit 30-1 is small, and the amount of air passing through the hollow power supply housing section 5-1 is small.
It will pass through 2.

For this reason, not only the cooling capacity of the first power supply unit 30-1 decreases, but also the cooling capacity of the first power supply unit N0-1 decreases.
There was a problem in that the cooling capacity of the upper portion of the power supply unit 30-1 was reduced.

The present invention was created in view of these points, and the first
The purpose of the present invention is to provide a cooling structure for electronic equipment in which the cooling performance does not deteriorate even when the electronic equipment is equipped with only the above system.

[Means to solve the problem]

In order to achieve the above object, the present invention provides a first electronic unit 10-1. A first system consisting of a first fan unit 20-1 and a first power supply unit 30-1, a second electronic unit 10-2.
A second system including a second fan unit 20-2 and a second power supply unit 30-2, and a first electronic unit 10-1. First fan unit 20-1. - second electronic unit 10-2.
A first power supply unit 30-1 and a second power supply unit 30-2 are mounted in parallel below the first electronic unit 10-1, with the second fan unit 20-2 stacked in multiple stages in this order, The first fan unit 20-1, the first and second power supply units 30-1, 30-2 and the first electronic unit 1
0-1, in which the second electronic unit 1O-2 is configured to be forcibly cooled by the second fan unit 20-2, and when the second system is not installed, the second power supply unit The lower plate 51 is installed in the power supply housing section 5-2 in which the
Air volume adjusting hooks 50 each having ventilation holes 55 arranged thereon are mounted on the upper plate 52.

Further, as illustrated in FIG. 2, a slide plate 60 having ventilation holes 65 arranged in the same manner as the arrangement of the ventilation holes 55 of the upper and lower plates 52 and 51 of the air volume adjustment box 50 described above is provided. 60 is attached to at least one of the lower plate 51 and the upper plate 52 so as to be adjustable and movable in the left-right direction.

Furthermore, as illustrated in FIG. 3, a butterfly-type regulating valve 7 is provided in the air volume regulating box 50 illustrated in FIG.
0 is configured to be rotatably mounted around a horizontal shaft 71.

[Effect]

As described above, the air volume adjustment box 50 is mounted in the power supply housing section 5-2 in which the second power supply unit 30-2 is mounted.

The lower plate 51 of this air volume adjustment box 50. Upper plate 52
A ventilation hole 55 is provided to reduce air resistance (
That is, the amount of air passing through the power supply housing section 5-2) is made approximately equal to the air resistance of the first power supply unit 30-1 (that is, the amount of air passing through the first power supply unit 30-1).

Therefore, approximately the same amount of air flows through the air volume adjustment box 50 and the first power supply unit 30-1.
Deterioration of the cooling performance of the first power supply unit 30-1 is prevented, and furthermore, the first electronic unit 10-1 is evenly and uniformly cooled.

Also, the second. The third invention is a lower plate 51 of the air volume adjustment box 50. The ventilation hole 55 of the upper plate 52 is made larger, and the air volume adjustment box 50 is provided with a slide plate 60 or an adjustment valve 70.

Therefore, by adjusting the mounting position of the slide plate 60 or the opening angle of the adjustment valve 70, the air volume adjustment box 5 can be adjusted.
The air resistance of 0 is approximately equal to the air resistance of the first power supply unit 30-i.

〔Example〕

The present invention will be specifically described below with reference to the drawings. Note that the same reference numerals refer to the same objects throughout the plan.

FIG. 1 is a perspective view of an embodiment of the present invention, FIG. 2 is a diagram showing the main points of the second invention, and FIG. 3 is a diagram of the third invention. It is a front view.

In FIG. 1, a housing 1 includes a first electronic unit 10-
1, a first fan unit 20=1, a first power supply unit 30-1, a second electronic unit 10-2, a second fan unit 20-2, and a second power supply. It is configured to be able to mount a second system consisting of a unit 30-2.

Then, the first power supply unit 30-1 is mounted in one of the power supply housing parts 51 of the power supply housing parts 5-1 and 5-2 in parallel below the housing l, and the first power supply unit 30-1 is mounted in one of the power supply housing parts 51, and -1.5
-2, the first electronic unit 10-1 is placed in the upper part of the second electronic unit 10-1, and the first fan unit 20 is placed in the upper part of the first electronic unit 10-1.
-1 each.

The front surface of the accommodating portion of the second electronic unit l0-2 is shown by a chain line, and the second fan unit 20- is shown by a chain line.
The front surface of the storage section 2 is covered with a cover (not shown).

On the other hand, 50 is a box-shaped air volume adjustment box having the same shape as the power shelf of the second power supply unit 30-2.

The lower plate 51 of the air volume adjustment box 50 has rectangular ventilation holes 55 formed at the same pitch, and the upper plate 52 also has rectangular ventilation holes 55 formed at the same pitch. be.

Note that, unlike the illustrated example, the ventilation holes in the lower plate 51 and the upper plate 52
For example, the ventilation holes in the upper plate may have one or two large frame-shaped ventilation holes.

The air volume adjustment box 50 configured as described above is mounted on the housing 1 by bringing the back surface of the right side extension part of the front plate 53 into close contact with the surface of the right front frame column of the housing l and securing it with screws. There is.

Therefore, when the first fan unit 20-1 is driven, cooled air is sucked into the lower part of the housing 1 from the lower air inlet 2 of the housing l, and almost the same amount of air is divided into the first fan unit 20-1.
The air flows into the power supply unit 30-1 and the air volume adjustment box 50.

One air flow cools the first power supply unit 30-1, rises, enters the left half of the first electronic unit 10-1, rises between the parallel printed boards 12, and cools it. It passes through the first electronic unit 10-1 and enters the first fan unit 20-1.

The other air flow passes through the air volume adjustment box 50 and rises, enters the right half of the first electronic unit l0-1,
The first fan unit 2 rises between the parallel printed boards 12 and passes through the first electronic unit 10-1 while being cooled.
The score goes to 0-1.

The rain airflow is also blocked by the baffle plate 22 from directly overhead, and is guided diagonally upward and backward, passing through the ventilation window of the first fan unit 20-1, and then passing through the airflow window of the first fan unit 20-1.
The air is discharged to the rear of the housing 0-1, rises, passes through the air exhaust port 3 provided in the ceiling of the housing 1, and is discharged to the outside of the housing 1.

In FIG. 2, 60 is the length of the air volume adjustment box 50.
It is a flat slide plate whose depth is slightly smaller than the depth of the lower plate 51 and whose width is smaller than the width of the lower plate 51 by the width of the ventilation hole 55.

The slide plate 60 is provided with ventilation holes 65 having the same shape as the ventilation holes 55 of the lower plate 51 and arranged in the same manner as the ventilation holes 55 of the lower plate 51.

On the other hand, on the left and right side plates of the air volume adjustment box 50,
An elongated plate-shaped guide plate 56 is attached to the lower plate 51 in parallel. The gap between the guide plate 56 and the lower plate 51 is slightly larger than the thickness of the slide plate 60.

Then, the slide plate 60 is inserted under the guide plate 56 and stacked on the lower plate 51.

As mentioned above, the slide plate 60 is attached to the air volume adjustment box 50.
is attached, so by moving the slide plate 60 left and right inside the air volume adjustment box 50, the ventilation holes 5 of the lower plate 51 can be adjusted.
It becomes possible to adjust the amount of air passing through 5.

Therefore, by driving the first fan unit 20-1, the first electronic unit 10-1 and the first power supply unit 30
-1, and if the result shows that the cooling of the first electronic unit 1o-i is uneven, the sliding plate 6
0 to the left or right as appropriate.

By doing so, uneven cooling of the first electronic unit 10-1 is eliminated.

In FIG. 3, 70 is a butterfly-shaped regulating valve 70 whose width is slightly smaller than the height of the air volume regulating box 50.

A horizontal shaft 71 is provided at the center of the front and rear end faces of the regulating valve 70, respectively.
The rear horizontal shaft 71 is connected to the air volume adjustment box 50.
By loosely fitting the front horizontal shaft 71 into the center hole of the front plate 53 of the air volume adjustment box 50, it can be rotated into the air volume adjustment box 50. It is installed.

Further, a screw hole 72 is provided at an off-center position on the front end surface of the regulating valve 70.

On the other hand, the front plate 53 has a screw hole 7 in which the regulating valve 70 is rotated.
A circular arc groove 75 corresponding to the locus 2 is provided.

Then, insert the small screw 7 into the arcuate groove 75 from the front side of the front plate 53.
4 and screw it into the screw hole 72, the adjustment valve 7
0 is fixed at a desired opening angle position.

Therefore, by driving the first fan unit 20-1, the first electronic unit l0-1 and the first power supply unit 30
-1, and if the result shows that the cooling of the first electronic unit l0-1 is uneven, the regulating valve 70 is rotated to adjust its opening angle appropriately.

By doing so, uneven cooling of the first electronic unit l0-1 is eliminated.

〔Effect of the invention〕

As explained above, in an electronic device configured to be able to mount a first system and a second system, when only the first system is mounted, the electronic unit of the first system Moreover, the power supply unit is cooled uniformly and its cooling performance does not deteriorate, which is an excellent practical effect.

[Brief explanation of drawings]

FIG. 1 is a perspective view of an embodiment of the present invention; FIG. 2 is a diagram showing the main points of the second invention, Figure 3 is a diagram of the third invention, (a) is a cross-sectional view, (b) is a front view; Figure 4 is a perspective view of electronic equipment; Figure 5 is a cross-sectional view of the electronic device. FIG. 6 is a perspective view of a conventional example. In the figure, 5-1.56-2 is the power supply housing part, lo-1 is the first electronic unit, 1O-2 is the second electronic unit, 20-1 is the first fan unit, 20-2 is the second fan unit, 30-1 is a first power supply unit, 30-2 is a second power supply unit, 1 is the housing, 11 is a shelf, 13 is the front plate, 21 is a fan, 23 is a suction hole; 3I is the power shelf, 40 is a cover 51 is the lower plate, 53 is the front plate, 60 is a slide plate, 71 is the horizontal axis, 75 indicates arcuate grooves. 12 and 32 are printed boards, 14 is the backboard, 22 is a wind regulating plate, 24 is the ventilation window, 33 is an operation panel; 50 is the air volume adjustment box, 52 is the upper plate; 55 and 65 are ventilation holes, 70 is a regulating valve; Nei B8/) Perspective view of the Tora dispute example 11 old haze (Flash) No. 1 3/) e August/) Ai] Electronic equipment/) In side view 'Ni5 Kasumi Densawa, note n@-view [ Y4 岨 Sasa row row n gun sight port Mb old

Claims (1)

[Scope of Claims] [1] Each system includes a plurality of systems including an electronic unit, a fan unit, and a power supply unit, and a first electronic unit (
10-1), first fan unit (20-1), second fan unit (20-1),
electronic unit (10-2), second fan unit (
20-2), and a first power supply unit (30-1) is arranged below the first electronic unit (10-1).
and a second power supply unit (30-2) are installed in parallel,
The first fan unit (20-1) connects the first and second power supply units (30-1, 30-2) and the first electronic unit (10-1) to the second fan unit. (2
0-2), in which the second electronic unit (10-2) is configured to be forcibly cooled.
If the system is not installed, ventilation holes (55) are provided in the lower plate (51) and upper plate (52) of the power supply housing part (5-2) in which the second power supply unit (30-2) is mounted. A cooling structure for electronic equipment, characterized in that it is equipped with an air volume adjustment box (50) in which are arranged. [2] A slide plate (60) having the arrangement of ventilation holes (55) of the upper and lower plates (52, 51) of the air volume adjustment box (50) of claim 1 and the ventilation holes (65) in the same arrangement. , the slide plate (60) is connected to the lower plate (51) or the upper plate (5
2) The cooling structure for an electronic device according to claim 1, wherein the cooling structure for an electronic device is mounted on at least one of the above components so as to be adjustable and movable in the left and right direction. [3] Claim 1, wherein a butterfly-type regulating valve (70) is rotatably mounted around a horizontal shaft (71) in the air volume regulating box (50) of Claim 1. Cooling structure for electronic equipment described in .