JP2814331B2 - Cooling structure of floor-mounted electrical equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a floor-mounted electric device, and more particularly to an electric device such as a floor-mounted computer main body provided with an electric circuit and a power supply formed by a plurality of printed boards. The present invention relates to a preferable cooling structure in a housing.

[0002]

2. Description of the Related Art An air-cooling structure using a cooling fan is widely used in various electric devices such as a floor-mounted computer. In this case, a large number of cooling fans are usually provided, especially in a large electric device, so that the cooling air does not evenly pass through the inside of the housing to cause a local cooling failure.

FIG. 10 shows an example of a conventional cooling structure using a cooling fan in a floor-standing electronic computer.
The hard disk unit 2, the power supply unit 3, the input / output unit 4, and the printed board group 5 housed in the housing 1 are cooled by two cooling fans 7, 7 provided at the lower part of the housing. In the structure shown in the figure, an input / output unit 4 for inserting and removing a medium and a printed board group 5 which can be inserted and removed for maintenance and inspection are arranged on the front side of the housing. By opening the front panel 11, the printed board can be inserted and removed. Therefore, the back panel 6 for connecting a plurality of printed boards is positioned vertically behind the printed board group 5, and the inside of the housing 1 is divided into the front and rear chambers 9 by the back panel 6. Becomes Therefore, the power supply unit 3 which does not require much maintenance and inspection is housed in the rear chamber 9 partitioned by the back panel 6, and the intake slits 12 and 14 are provided at the front and rear of the upper part of the housing 1. Power supply unit 3
One cooling fan 7, 7 is arranged below each, and the printed board group 5 and the input / output unit 4 arranged above the printed board group 5 are cooled by the cooling fan 7 arranged on the front side. The cooling fan 7 cools the power supply unit 3 and the hard disk unit 2 disposed above the power supply unit 3. The air flows of the fans 7, 7 are indicated by arrows a, a in the figure, respectively.
As shown by, the intake slits 12 and 14 above the housing 1
Is sucked into the housing through the fans 7, 7 and the legs 27.
Is discharged into the space between the bottom surface of the housing lifted by the step and the installation floor surface.

[0004] The floor-mounted computer having the above-mentioned structure employs a structure in which two cooling fans 7 are provided in order to allow cooling air to pass through the housing divided into two parts by the back panel 6. The purpose is also to prevent the air flow from changing even when the capacity of the cooling fans 7 changes, thereby preventing a local air stagnation portion from occurring in the housing 1. In floor-mounted computers, various types are prepared according to required functions, for example, processing speed and memory capacity, the number of interface circuits with external devices, and the like, and the amount of heat generated by each unit housed in the housing differs for each type. Therefore, the cooling fans 7, 7 may be made smaller or larger accordingly. However, since it is common to reduce the molding cost by sharing the casing 1 as much as possible, it is common practice to mount cooling fans of different capacities in the same casing. In such a case, it is necessary to make the cooling air flow evenly in the housing.

[0005]

For the above reasons, a plurality of cooling fans are provided in a conventional electric device of this type. However, in order to reduce the cost of parts and assembly, the cooling fan is required. It is desirable to have only one structure. Therefore, the present invention provides an electric device having a structure in which the inside of a housing is divided into a plurality of chambers by a back panel or the like, without generating air stagnation in each of the chambers 9 and 9 divided by one cooling fan. It is an object to provide a cooling structure capable of uniformly cooling the entire electric unit housed in the body 1.

[0006]

According to the cooling structure for a floor-standing electric device according to the present invention, the inside of the housing is one or crosses each other.
In a cooling structure of a floor-standing electric device having a structure in which two panels 6 are divided into a plurality of chambers 9, 9, the cooling fan 7 is arranged such that the center of the intake port 10 is the one or two panels 6.
The wall surfaces 18, 1, 1 on the cooling fan 7 side of the chambers 9, 9 divided by the panel 6
8 is an air flow from each of the chambers 9, 9,
It is characterized in that it is an inclined surface in the direction in which the flow path area for guiding to zero decreases .

[0007] The inclined surface has a variable angle inclination whose angle can be adjusted.
Or the upper surface of the duct 8 and the upper surface of the auxiliary duct 26
Angled inclined surface formed by the above. Variable angle tilt
In the case of a surface, the wall surfaces 18 on the cooling fan 7 side of each of the chambers 9 divided by the panel 6 are connected to the side 1 on the side opposite to the cooling fan.
9 and 19, are formed by plates 17 and 17 mounted so as to be swingable and fixable around a rubber plate.
It is desirable to provide a flexible sealing material 24 made of
No. When the inclined surface is a fixed angle inclined surface, the wall surfaces 18 are formed by the upper surface of the duct 8 mounted below the chambers 9 and 9 and the upper surface of the auxiliary duct 26 fitted at the center thereof, The cooling fan 7 is housed in the center of the auxiliary duct 26 . By employing such a structure, the size of the cooling fan 7 can be adjusted.

[0008]

According to the structure of the present invention, since the intake port 10 of the cooling fan 7 is opened on both sides of the chambers 9, 9 divided by the panel 6, a desired amount of air flow is generated in the chambers 9, 9. Chambers 9, 9
Since the airflow flowing through the cooling fan 7 is smoothly guided to the intake port 10 of the cooling fan 7 without locally staying, the chambers 9, 9 divided by one cooling fan 7 can be uniformly cooled. it can. In addition, since the intake port 10 of the cooling fan 7 is provided so as to be substantially centered on the extension of the panel 6 that divides the inside of the housing 1, the chambers 9 and 9 are formed even when the capacity of the cooling fan 7 changes. The proportion of cooling air passing through is unchanged and a smooth streamline of cooling air through both chambers 9, 9 is also guaranteed.

Further, the wall surface 1 of each chamber 9, 9 on the side of the cooling fan 7
According to the structure in which the cooling fan 8 and 18 are provided so as to be swingable and fixable, the inclination angles of the wall surfaces of the chambers 9 and 9 can be adjusted according to the size of the cooling fan 7, and the flow of the cooling air can be more smoothly performed. In addition, it is possible to perform more efficient cooling by minimizing the generation of a vortex near the intake port when the size of the cooling fan 7 changes. In addition, the upper surface of the duct 8 mounted below the chambers 9 and 9 and the upper surface of the auxiliary duct 26 fitted at the center thereof,
By forming the cooling fan 7 in the center of the auxiliary duct 26 by forming the cooling fan 18, the size of the cooling fan 7 can be coped with and the gap between the duct 8 and the cooling fan 7 can be avoided.

[0010]

1 to 6 show a first embodiment of the present invention. FIG. 1 is a perspective view schematically showing the inside of an electric device, FIG. 2 is a sectional side view of a cooling fan mounting portion, and FIG. 3 is a perspective view of a duct unit to which a fan is attached. Case 1
The arrangement of the power supply units is the same as that shown in FIG. 10, 2 is a hard disk unit, 3 is a power supply unit, 4 is an input / output unit, 5 is a printed board group, 6 is a back panel, and 7 is a cooling fan. Yes, 8 is a duct.
The inside of the housing 1 is divided into two front and rear chambers 9 by a back panel 6, and an intake port 10 of a cooling fan 7 is arranged on an extension of the back panel 6. In the upper part of the front panel 11 of the housing, an intake slit 12 and an insertion port 13 for a medium into the input / output unit 4 are opened. An intake slit 14 is also provided in the upper rear part of the housing 1 similarly to the conventional device.

A duct 8 provided below the chambers 9 and 9 in the casing 1 is provided with a cover panel 16 for replacing a cooling fan, which forms a lower side face of the casing 1, and extends from the center to both sides in a mortar shape. Plate members 17, 17 are provided, and an accommodating portion for the fan 7 is formed between the plate members 17, 17. The fan 7 is fixed to the duct 8, and then the duct 8 is fixed to the housing 1 so that the cooling fan 7 is mounted in the housing 1.

When the plate members 17, 17 of the duct 8 are loaded into the housing 1, the two chambers 9, which are divided by the back panel 6,
9 and forms the wall surfaces of these chambers 9 and 9 on the side of the cooling fan 7. As clearly shown in FIG. 2, the walls 18, 18 smoothly guide the air flow sucked from the chambers 9, 9 into the fan 7 to the fan 7, so that the corners of the chambers 9, 9 This prevents the formation of air stagnation.

Plates 17, 17 forming the walls 18, 18
Is pivotally mounted on the sides 19 and 19 on the side opposite to the cooling fan so as to be vertically swingable, and the cover panel 16 of the duct 8
Is provided with an arc slit 20 for fixing the swinging position of these plate members 17. As shown in FIG. 4, when the cooling fan 7 has a small capacity (accordingly, small size) as shown in FIG.
The cooling fan 7 is fixed in a state where it is tilted downward so as to face the upper end corner of the cooling fan 7, and when the cooling fan 7 is large, it is rotated upward as shown in FIG. Fixed. The plate members 17 and 17 are fixed by the arc slit 2
A screw 22 inserted into the cover panel 16 is screwed into the side surface of the distal end portion of the plate material 17, and the cover 22 is fixed with the screw 22.

In the structure in which the plates 17, 17 forming the walls of the chambers 9, 9 on the side of the cooling fan are provided so as to be swingable and fixable, when the size of the cooling fan 7 changes, the tip of the plate 17 is changed. The plate member 17 can be set so that a step does not occur between the cooling fan 7 and the case of the cooling fan 7. A decrease in efficiency can be prevented.

As shown in FIGS. 4 to 6, the plate members 17, 17 forming the wall surfaces of the chambers 9, 9 on the side of the cooling fan are swingably provided. Clearance 23 between tip and case of cooling fan 7
May occur. To avoid such a gap, a flexible sealing plate 24 such as a rubber plate may be provided on the front end 21 of the plate 17 as shown in FIG. It is possible to adopt a structure in which an auxiliary plate 25 capable of being mounted is attached, the distal end side of the auxiliary plate 25 is fixed to the case of the cooling fan 7, and the base end side thereof is locked to the plate 17.

In the above embodiment, the back panel 6 is used.
The walls 18, 18 on the cooling fan 7 side of the defined chambers 9, 9 are removed.
Although the structure is a variable angle inclined surface,
When the duct 8 is manufactured in accordance with the case of a large-sized cooling fan with a fixed angle inclined surface having a fixed angle , and the small-sized cooling fan is used, an auxiliary duct 26 is inserted inside the duct 8 as shown in FIG. It can also be a structure that does. In this case, the inclination angle of the upper surface of the auxiliary duct 26 does not necessarily need to be the same as the inclination angle of the upper surface of the duct 8.

In the above embodiment, the inside of the housing is 1
Has been described what is bisected pieces of the panel, when the two panels crossover housing is divided into four chambers, the line of intersection of the extension on (on the extension plane of the two panels )
And a structure in which one cooling fan is disposed on the extension surface of the other panel in each of the divided chambers among the intersecting panels.

[0018]

According to the present invention described above, the inside of the housing of the electric device can be cooled with a smaller number of cooling fans, and the cooling of each electric unit in the housing caused by reducing the number of cooling fans is achieved. In this case, it is possible to avoid unevenness in the size and the occurrence of a locally defective cooling portion in the housing, thereby effectively cooling the electric device in the housing more economically.

[Brief description of the drawings]

FIG. 1 is a schematic perspective view of the inside of an electric device according to a first embodiment.

FIG. 2 is a cross-sectional side view of a cooling fan mounting portion.

FIG. 3 is a perspective view of a duct for guiding cooling air.

FIG. 4 is a sectional side view of a cooling fan mounting portion according to the first embodiment.

FIG. 5 is a view similar to FIG. 4 when the cooling fan is large.

FIG. 6 is a perspective view of the duct of the first embodiment.

FIG. 7 is a perspective view showing another example of the plate material of the duct.

FIG. 8 is a perspective view showing still another example of the plate material of the duct.

FIG. 9 is a perspective view showing an auxiliary duct installed in the duct.

FIG. 10 is a perspective view showing an example of a conventional structure.

[Explanation of symbols]

 6 Back panel 7 Cooling fan 9 Room 10 Inlet 17 Plate 18 Wall 19 Side near cooling fan

Claims (3)

(57) [Claims] 1. A housing is multiple chambers by one or intersected to two panel <br/> Le (6) (9), the cooling of the floor-type electric device having a structure which is divided into (9) In structure, one common to multiple chambers
The cooling fan (7) whose said one central air inlet (10) or
Or the two panels (6) are arranged on the extension surface, and the wall (18) on the cooling fan (7) side of each of the chambers (9) and (9) divided by the panel (6) , (18) each chamber (9), flow path surface for guiding the air stream from (9) cooling fan inlet (10)
A cooling structure for a floor-standing electric device, characterized in that the surface has a variable angle inclined surface in a direction in which a product decreases . 2. A wall (18), (18) on the side of the cooling fan (7) of each of the chambers (9), (9) divided by the panel (6) is formed around a side (19) on the side of the anti-cooling fan. A plate (1
7), it is formed by (17), flexible leading edge of the sheet material
The cooling structure for a floor-standing electric device according to claim 1 , wherein said sealing plate (24) is mounted . 3. One or two intersecting panels in the housing.
Floor (6) divided into multiple rooms (9), (9)
In a cooling structure of a type electric device, one common to a plurality of chambers
Cooling fan (7)
Or on the extension of two panels (6)
Ri, panel (6) in divided chamber (9), each of the cold <br/> retirement fan (7) side wall (9) (18), (18) each chamber (9), (9 ) from
Channel surface for guiding the air flow to the inlet (10) of the cooling fan
The product has a fixed angled slope in the direction in which the product decreases.
A cooling structure for a floor- standing electric device, wherein a slope is formed by an upper surface of a duct (8) and an upper surface of an auxiliary duct (26) fitted in a central portion thereof.