JPH0265608A - Switchboard - Google Patents

Abstract

PURPOSE:To perform cooling efficiently by arranging a common duct at a side of electronic machinery and providing a branch duct coupled with the common duct having a vent in the surface facing with the electronic machinery. CONSTITUTION:When a fan 4 is driven, cooling air 8 flows from the outside of a housing 1 through a suction port 7 into a common duct 5 and branched to branch ducts 5A, 5B, 5C. The cooling air 8 flowed into the branch duct 5A passes through an exhaust port 5A1 and flows over the entire region of the underface of electronic machinery 3A thus cooling the electronic machinery 3A, then the cooling air 8 is discharged from an exhaust space 6A through the fan 4 and an exhaust port 9 to the outside of the housing 1. In similar manner, the cooling air 8 in the branch ducts 5B, 5C cool electronic machinery 3B, 3C. By such arrangement, electronic machinery 3A, 3B, 3C is cooled sufficiently with high efficiency.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a power distribution board in which built-in electronic equipment is cooled by a cooling means such as a fan.

[Conventional technology]

The conventional switchboard was shown in Figure WC4.

In the figure, il+ is the outer box of a power distribution board such as a cubicle, (2)
is a door, (sA) (aB) (ac) iq electronic equipment arranged in outer box III at a distance from each other, 141 is a fan, (
6) is an intake port, 11) is a cooling gas, and (9) is an exhaust port.

The conventional switchboard is configured as described above, and when the fan +41 is driven, the outer box...the intake port (6) from the outside. The cooling gas (7) that is sent through the
When passing through the air path, that is, the winding path on both sides of the electronic devices (3A) (3B) (80) and the ventilation path between the electronic devices (3A) (sl (sc)), the VC electronic devices (8A) (3B) ( 30) Cool the 6 electronic devices (8A) C8B) (8C) inside and through,
Finally, the fan (from 41 to the exhaust port (from 91 to the outer box ill)
released outside.

In other words, each electronic device (3A) (3B) (
30) were simply spaced apart from each other and placed in the center of an appropriately sized outer box. Therefore,
Intoxicating gases such as air have 6 electrons F! i device (3A) (3B)
(There is no amount that passes through the inside of 3C, and the amount is different for each electrical and electronic device 3A) (3B) (!30), and furthermore,
The gas whose temperature has increased by exchanging heat with the electronic device (3C) at the bottom tier flows into the electronic device (3B) at the next tier, and similarly, the electronic device (sc) (3B) enters the electronic device (3A) at the upper tier. Therefore, each electronic device (3A
) (3B) (3C), a temperature difference occurs in each white part, and furthermore, the upper electronic devices (3A) (3B) are insufficiently cooled.

[Problem to be solved by the invention]

Conventional power distribution, as mentioned above, each electronic device (3A)
Simply connect each electronic device (3A) (373) (30) so that a 111J space appears around (3B) (3C).
Since they were only placed at a distance from each other and in the center of the suitably sized outer box, each
A) (sB) (sc) are each partial! c A temperature difference occurs,
There was a problem that the electronic equipment (:3A) (3B) above @Vc was insufficiently cooled.

This invention was made to solve the above problems, and is a switchboard with a highly efficient cooling structure. 4 things? purpose.

[Means to solve all problems]

The power distribution board according to the present invention includes a plurality of electronic devices arranged at predetermined intervals of 7" in an outer box, a communication duct placed on the side of the electronic devices, and a connecting duct connected to the common duct. An exhaust port is connected to the common duct and is provided corresponding to each of the electronic devices, and is provided on the surface facing the corresponding electronic device.
Branch duct with? ! It is a second construction.

[Effect]

In the switchboard of this invention, the cooling gas in the common duct flows through each branch duct.

The cooling gas in each branch duct flows into the corresponding electronic device VC. Therefore, the 6 electronic devices are cooled by the cold cooling gas in each branch duct without the cooling gas that has passed through other electronic devices and increased in temperature, so each electronic device is efficiently and sufficiently cooled. .

[Invention series]

FIGS. 1 to 3 are diagrams showing a single row of kettles according to the present invention.

In the figure, ill is the outer box of a power distribution board such as a cubicle or a subboard.
) are the doors installed on the front of this outer box, (3A) (3B)
(3C) is the outer box l in a vertical relationship separated by a predetermined interval.
), (41 is the next fan installed at the top of the outer box (11), and the VC is placed directly above the top electronic device (3A). +51 is the outer box... inside The common duct is located on the rear side and extends vertically without a flat box-like fir. (5A) has its rear side connected to the top front side of the common duct 15). It is a flat dish-shaped branch duct with 4 passages inside, and the upper surface has an exhaust port (5Al) that extends over the entire lower surface of the electronic device (3A). It has a separated flat plate-like bottom (5A2), and an exhaust space (6B) is formed between this bottom (5A2) and the top surface of the Seiko equipment (8B).
There are 12. (5A3) is the @ side V of the branch duct (5A)
(5B) is a plate-shaped branch duct that is connected to the middle part 671 side of +51 and communicates with the common duct 151, and the top surface is equipped with electronic equipment (3B). ) An exhaust port (5) with an opening on the entire bottom surface.
Bl) i, and has a flat bottom (sBg) spaced a predetermined distance from the top surface of the electronic device (3C), and there is a flat bottom (sBg) between this bottom (5B2) and the top surface of the electronic device (3c). An exhaust space (aC) is formed. (5BS) is the rjtl wall formed in front of the branch duct (5B),
(5C) Common duct with uneven pattern ・6) Lower part of the duct 1]j
It is a flat plate-shaped branch duct that is connected to the common duct 16), and the upper surface has the Seiko equipment (3), which is opened across the entire lower surface and has nine exhaust ports (SCL), and the lower surface is connected to the outer box. (1) Flat bottom (5Bg) separated from the bottom by a predetermined distance
(!-It has become.

(6A) is an exhaust space formed between the inner top surface of the outer box III and the electronic device (8A), and the length of this exhaust space (6A) in the vertical direction is the exhaust space (6B) (6( The exhaust space (6B) and the exhaust space (6C) have the same volume.Also, each of the electronic devices (aA) (aB) (sa ) have a large number of vertical ventilation passages (not shown) formed inside them, and each direct child device (sA) (sB
) (+c) internal ventilation resistance may be approximately the same or different depending on the type of electronic device. (7) is the outside (
The branch duct (50
) is located below A.

(8) is the cooling gas such as air taken into the common duct j61 from the intake port 17), and (9) is the exhaust port formed in the earthen wall of the outer box Il+, and the cooling gas taken in from the intake port +71. (8) It is to be discharged outside the entire outer box III.

Next, the operation of the above-mentioned VC embodiment will be explained. ◎When the fan (4) is activated, the cooling gas 181 outside the outer box III flows into the common duct (+61) from the inlet ()).

Further, the water is divided into branch ducts (5A), (5B), and (50). The cooling gas (8) that entered the branch duct (sh) VC.

The exhaust 20 (5Al) reaches the entire bottom surface of the electronic device (3A), passes through the inside of the electronic device (8A), and then returns to the electronic device (8A).
After cooling completely, it is discharged from the exhaust port 22 (6A) through the 77-hole 41 to the outside of the outer box + II from the exhaust port (91).
The cooling gas (8) in the branch duct (5B) is passed through the exhaust port (5
Bl) - Electronic device (3B) - Exhaust space (6B) → Space around electronic device (3A) - Exhaust space (6A) - Fan 1
41-Exhaust port (91), the cooling gas (8) in the branch duct (50) flows through the exhaust port (soi)-4'!Sub device (3
0) → Exhaust space (60) - Space around electronic equipment (8B) → Space around electronic equipment (3A) - Exhaust space (6A
) - Fan (41 - Exhaust port (9 and flow, each electronic 4!iI
The container (3B) (80) is also cooled. In other words, the cooling gas whose temperature has increased after passing through each electronic device (i9B) (3C) does not flow through the other electronic devices (3B) (3A).
All electronic devices (C5h) (sn) (3a) are cooled by the cold cooling gas that does not rise in temperature outside the outer box III, so all electronic devices (aA) (8B) (sc) are cooled in the same way. Cools efficiently and sufficiently. Sweet. Each exhaust port (5Al
) (5B1) (501) flows into the entire bottom surface of each electronic device (3AX3B) (30), so temperature unevenness occurs within each electronic device (3A) (8B) (8C). Furthermore, it is more preferable that each branch duct (5A), (5B), and (50) be provided with a heat insulating material.

〔Effect of the invention〕

This invention is based on the above-mentioned method. A plurality of electronic devices spaced apart from each other, a common duct disposed on the side of the electronic devices, and a common duct connected to the common duct.
``L'' Since we have adopted branch ducts that communicate with the common duct and are provided correspondingly to each of the electronic devices, each having an exhaust port on the surface facing the pair of F61Jt child devices, each electronic device can Since it is cooled with cold cooling gas that does not pass through other electronic devices, it has the effect of efficiently and sufficiently cooling the device.

[Brief explanation of the drawing]

Figures 1 to 3 are diagrams showing one embodiment of the present invention.
The figure is a cross-sectional side view, FIG. 3 is a vertical front view, and FIG. 3 is a perspective view showing the internal structure inside the outer box, schematically and in parts. FIG. 4 is a vertical perspective view showing a conventional switchboard. In the figure, 11: is the outer box, (3A) (3B) (110
) is electronic I! i unit, 151 is a common duct, (5A) (5
B) (50) is a branch duct, (5Al) (5Bl) (5
C1) V'i exhaust port. Note that the same reference numerals in the figures indicate the same or equivalent parts.

Claims (1)

[Claims] Multiple electronic devices arranged at predetermined intervals inside the outer box,
A common duct arranged on the side of the electronic device, and a common duct connected to the common duct and communicating with the common duct, provided corresponding to each of the electronic devices, and having an exhaust port on a surface facing the corresponding electronic device. Switchboard with branch ducts.