JPS6218053Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an air cooling duct structure for electronic devices and information processing devices.

BACKGROUND ART In recent electronic devices, information processing devices, and the like, integrated circuit elements are becoming more densely integrated due to miniaturization, and how to dissipate the heat generated by the elements has become a major problem. Conventional heat dissipation methods are broadly divided into water cooling and air cooling, and air cooling methods are further divided into forced air cooling using a cooling fan, etc., and natural air cooling, which uses only air convection without using a cooling fan. In general, water cooling can dissipate heat several times more than air cooling, but it has drawbacks such as increased cost and damage to the device due to cooling water leakage when the water cooling function fails. In addition, since forced air cooling uses a cooling fan, it has the disadvantage of having to convert the cooling fan.

The object of the present invention is to provide a natural air cooling duct structure that enables heat dissipation to a state close to conventional forced air cooling in the case of air cooling, particularly natural air cooling.

In the natural edge cooling duct structure of this invention,
A regulating valve is provided inside the duct that commonly sends the air sent out from the heat generating module to the outside and near the confluence point of the air sent out from the upper module and the lower module to prevent the air from going around.

A conventional example and an embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a cross-sectional view of an example of an air cooling duct structure in a conventional electronic device or information processing device. The heating modules 1a, 1b, and 1n are each mounted with a plurality of integrated circuit elements (not shown), and at least one heating module is mounted in the vertical direction. A convection guide plate 2 for generating and promoting convection between the heat generating module 1a and the module 1b.
a is implemented. Further, a convection guide plate 2b is similarly mounted between the other heat generating modules 1b and 1n. In FIG. 1, a convection guide plate is mounted between the heat generating modules, but depending on the amount of heat generated by the heat generating module, a plurality of heat generating modules may be stacked one on top of the other and a convection guide plate may be mounted for each of the plurality of modules.

Furthermore, the heat generating module 1 is mounted vertically.
a, 1b, 1n and convection guide plates 2a, 2b, 2
2m, a duct 3 for increasing the air cooling effect is installed so that air convection occurs in the vertical direction. This heat generating module 1a is cooled by entering air 7a from the air intake port 4a of the convection guide plate 2m. Afterwards, the air 7a is discharged to the duct 3 from the air discharge port 5a of the convection guide plate 2a, and the air heated by the convection in the duct 3 rises. Furthermore, the heat generation module 1b is a convection guide plate 2.
Air 7b enters from the air intake port 4b of a and is cooled. Later, the air 7b is discharged to the duct 3 from the air discharge port 5b of the convection guide plate 2b, and the air heated by the convection in the duct 3 rises. The same holds true for the other heat generating modules 1n.

The air 7a heated by the amount of heat generated by the heat generating module 1a rises through the duct 3, and the temperature when it reaches the vicinity of the air outlet 5b of the convection guide plate 2a is Ta, and the temperature Ta is given by the amount of heat generated by the heat generating module 1b. If the temperature of the warmed air 7b when it reaches the vicinity of the air outlet 5b is Tb, if Ta>Tb, the flow of the air 7a in the duct 3 will be in the higher direction as shown in the air 7a'. This causes a flow downwards. As a result, convection into the duct 3 is disturbed in the vicinity of the air outlet 5b, and heat dissipation from the heat generating module 1b is not performed favorably. Furthermore, although not shown, the same thing can be considered in the vicinity of the air outlet 5n.

The object of the present invention is to provide an improvement in heat dissipation in a natural air cooling system having the above-mentioned duct structure, and FIG. 2 shows one embodiment thereof.

The heating modules 10a, 10b, and 10n are each mounted with a plurality of integrated circuit elements (not shown), and at least one heating module is mounted in the vertical direction. Heat generating module 10a
A convection guide plate 12a for generating and promoting convection is mounted between the heat generating module 10b and the heat generating module 10b, and a convection guide plate 12b is similarly mounted between the other heat generating modules 10b and 10n. Although a convection guide plate is mounted between the heat generating modules in Fig. 2, depending on the amount of heat generated by the heat generating modules,
A plurality of heat generating modules may be stacked and mounted in the vertical direction.

Furthermore, the heat generating module 1 is mounted vertically.
0a, 10b, 10n and convection guide plates 12a, 1
2b, 12n, and 12m, a duct 13 for increasing the air cooling effect is mounted so that air flows in the vertical direction. This heating module 10
Air 17a enters through the air intake port 14a of the convection guide plate 12m and is cooled. Later, air 17a is released from the outlet 15a of the convection guide plate 12a.
is discharged to the duct 13, and the air heated by convection in the duct 13 rises. Further, the heat generating module 10b is cooled by entering air 17b from the air intake port 14b of the convection guide plate 12a.
Later, the air outlet 15b of the convection guide plate 12b
The air 17b is then discharged to the duct 13, and the air heated by convection in the duct 13 rises. The same applies to the other heat generating modules 10n.

The air 17a heated by the amount of heat generated by the heat generating module 10a rises in the duct 13, and the temperature when it reaches the vicinity of the convection guide plate 15b is defined as Tx, and the air 17a is warmed by the amount of heat generated by the heat generating module 11b. As mentioned above, if the temperature when the air 17b reaches the vicinity of the outlet 15b is Ty, then if Tx>Ty, the flow of the air 17b can be prevented. However, as in the present invention, the duct 13
Adjustment valve 2 whose tip extends vertically into the duct so that the flow will not be blocked even if Tx > Ty.
By providing 0, this drawback can be solved so that the air 17b rising in the duct 13 like the air 17a does not affect the air 17b near the outlet 15b.

One embodiment of the present invention has been described above, and according to the present invention, compared to conventional structures, it is possible to obtain an excellent natural air cooling duct structure that can prevent warm air from flowing back from the duct.

[Brief explanation of the drawing]

FIG. 1 is a side sectional view of a conventional natural air cooling duct structure, and FIG. 2 is a side sectional view of one embodiment of the present invention. 10a, 10b, 10n...heat generating module,
12a, 12b, 12n, 12m...convection guide plate, 14a, 14b, 14n...air intake, 15a, 15b, 15n...air outlet, 13...duct, 20...regulating valve.

Claims (1)

[Scope of utility model registration request] A convection guide plate that promotes natural air cooling of an electronic device or information processing device incorporating a plurality of heat generating modules is mounted vertically adjacent to the heat generating module, and on one side of the heat generating module and the convection guide plate. In the natural air cooling duct structure, in which a duct is installed in the vertical direction to blow out warm air through convection, the air heated by the heat generating module mounted on the lower stage and the heat generating module mounted on the upper stage is distributed to each convection induction plate. This natural air cooling duct structure is characterized by providing a regulating valve whose tip extends in the vertical direction of the duct at a point where the air is sent out and joins in the duct to prevent warm air from circulating from the lower heat generating module to the upper heat generating module.