JP3236722U - Control board or switchboard with cooling structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a control panel or a switchboard having a cooling structure in which a ventilation path is straight, ventilation resistance is reduced as much as possible, a ventilation fan is located in a low place, maintenance work is not performed in a high place, and there is little danger. offer. SOLUTION: A control board or a power distribution board 1 provided with a cooling structure is provided with an intake port 4 on a front side 2a of a housing bottom 2c in a housing 2, and an opening 9a is provided between the housing bottom and the inside of the housing. A wind tunnel 7 linear in the vertical direction is provided in the housing, a ventilation fan 13 is provided at the lower end of the wind tunnel, a dust filter 10 is provided in the opening, and the upper portion 7a of the wind tunnel is provided on the ceiling plate 2b in the housing. Connected, the ceiling plate is provided with an exhaust port 11, a plurality of heat generating devices 8a, 8b, 8c are provided in the wind tunnel, and electronic parts 5a, 5b, 6a that do not require cooling are provided outside the wind tunnel inside the housing. , 6b were provided. [Selection diagram] Fig. 1

Description

The present invention relates to a control panel or a switchboard provided with a cooling structure.

Conventionally, in a control panel or a switchboard provided with a cooling structure, as shown in Patent Document 1, the partition plate is deformed, the ventilation path is not straight, and air resistance of ventilation exists in various places.

In addition, since the exhaust fan is on the ceiling side, there are many problems such as maintenance work becoming aerial work.

Further, what is shown in Patent Document 2 is a ventilation duct cooling device of a control panel, in which a reciprocating ventilation duct is provided on the heat radiation fin side of a heat generating device, a cooling fan is provided in an upper exhaust port, and the ventilation duct is reciprocated. It cools the heat generating equipment.

Here, the ventilation duct has a bend in the middle, which causes air resistance at the bend, and the problem of noise is also pointed out. In addition, there are many problems such as a cooling fan at the upper exhaust port, which makes maintenance work aerial work.

Japanese Unexamined Patent Publication No. 2004-88023 Utility Model Registration No. 3130502

By the way, in the cooling device of Patent Document 1, the partition plate is deformed in the middle, the ventilation path is not straight, and the air resistance of the ventilation exists in various places. In addition, the maintenance work of the exhaust fan becomes aerial work, which is dangerous.

Further, in the cooling device of Patent Document 2, the ventilation duct has a curved portion, the ventilation path is not straight, and the air resistance of the ventilation exists in each place. Further, as in Patent Document 1, since the cooling fan is provided in the upper exhaust port, the maintenance work becomes a high place work, which is dangerous.

Further, in a control panel or a power distribution panel having a conventional cooling device, as shown in FIG. 5, an intake port 31 exists on the front side 30a of the housing 30, and an exhaust fan 32 is provided on the ceiling side of the housing 30. The structure was such that cooling air was introduced from the front side 30a (intake port 31) of the housing 30 by the exhaust fan 32 and discharged from the exhaust port 36 to cool the heat generating devices 33, 34, 35. The intake port 31 is not provided in the housing bottom 40 (the housing bottom 2c in FIG. 1) of the housing 30.

However, although the cooling air is introduced from the front intake port 31 (direction of arrow E) and exhausted from the upper exhaust port 36, the cooling air not only cools the heat generating devices 33, 34, 35 but also. Since electronic components 37a, 37b, 38a, 38b (for example, a substrate, a circuit breaker, etc.) that do not need to be cooled are also cooled (arrow E), inevitably, heat generating devices 33, 34, 35 and electrons are used. It is mounted in the housing 30 with a space between the parts 37a, 37b, 38a, and 38b. As a result, there is a problem that the housing 30 becomes large.

Further, since ventilation is also generated in the electronic parts 37a, 37b, 38a, 38b that do not require cooling, a large amount of air flow of the ventilation fan 32 must be secured, and the ventilation fan 32 becomes large. Moreover, the high temperature air hits the electronic components 37a, 37b, 38a, 38b and adversely affects the electronic components.

Further, in the conventional device, there is a type in which a ventilation fan is provided in the intake port 31, but since the intake air speed becomes high, external dust easily adheres to the heat generating devices 33, 34, 35 inside the housing 30. Therefore, it is necessary to provide a dustproof filter 39 at the intake port 31, and the air volume of the ventilation fan must be increased inevitably, which causes a problem that the ventilation fan becomes large.

The present invention solves the above-mentioned conventional problems, the ventilation path is straight, the ventilation resistance is reduced as much as possible, the ventilation fan is in a low place, and the maintenance work is not a high place work, which is dangerous. It is an object of the present invention to provide a control panel or a switchboard having a cooling structure having less property.

In order to achieve the above object, the present invention
First, in the housing, an intake port is provided on the front side of the bottom of the housing, an opening is provided between the bottom of the housing and the inside of the housing, and a wind tunnel linear in the vertical direction is provided inside the housing. , A ventilation fan is provided at the lower end of the wind tunnel, a dust filter is provided at the opening, the upper part of the wind tunnel is connected to the ceiling plate in the housing, and the ceiling plate has an exhaust port. A cooling structure provided, wherein a plurality of heat generating devices are provided in the wind tunnel, and electronic components that do not need to be cooled are provided outside the wind tunnel in the housing. It is composed of a control panel or a switch panel equipped with.

With this configuration, when the ventilation fan is driven, the cooling air is blown in a straight line from the bottom to the top in the air cavity, and the cooling air cools the heat generating device and flows out from the exhaust port, so the air resistance is reduced as much as possible. Moreover, since the cooling air does not hit the electronic parts, only the heat generating equipment can be cooled, and the cooling efficiency is improved. In addition, since it is not necessary to leave a space between the heat generating device and the electronic component, it is possible to reduce the size of the housing by integrating and mounting the heat generating device. In addition, since the ventilation fan is installed at the lower end (low place) of the wind tunnel, the maintenance work does not become a high place work, and the maintenance work becomes easy. Moreover, since the hot air does not pass through the ventilation fan, the life of the ventilation fan is extended. Further, by blocking the space between the heat generating device and the electronic component with a wind tunnel, the high temperature air does not adversely affect the electronic component.

Secondly, since the cooling air by the ventilation fan is provided with the intake port at the bottom of the housing, it flows in a straight line from the bottom to the top in the wind tunnel and is discharged to the outside of the housing from the exhaust port. It is composed of a control panel or a power distribution panel provided with the cooling structure according to the first description above.

Therefore, in the wind tunnel, the cooling air by the ventilation fan flows in a straight line from the lower side to the upper side in the wind tunnel, so that the air resistance can be reduced as much as possible and the cooling efficiency of the heat generating device can be improved.

Thirdly, the control panel or the control panel provided with the cooling structure according to the first or second paragraph, wherein a partition plate is provided between the bottom of the housing and the inside of the housing, and the partition plate is provided with the opening. It consists of a switchboard.

Therefore, since the partition plate is provided with an opening and the dustproof filter is provided in the opening, dust and dust do not enter the housing.

Fourth, the heat generating device is a reactor, and the cooling air flows in a straight line from the bottom to the top in the space between the core of the reactor and the coil on the outer periphery, and the cooling air is the coil of the reactor. It is composed of a control panel or a power distribution panel provided with the cooling structure according to any one of 1 to 3 above, which is characterized in that it flows in a straight line from the lower side to the upper side of the outer peripheral portion of the wind tunnel and the inner wall of the wind tunnel.

When configured in this way, the heat generating device is a reactor, and the cooling air flows linearly from the bottom to the top in the space between the core and the coil on the outer periphery, and the outer peripheral portion of the coil of the reactor and the outer periphery of the coil are described. Since it flows in a straight line from the bottom to the top on the inner wall of the wind tunnel, it is possible to effectively suppress the heat generation of the reactor and improve the cooling efficiency.

According to the present invention, when the ventilation fan is driven, the intake port is provided at the bottom of the housing, so that the cooling air is blown in a straight line from the bottom to the top in the air cavity, and the cooling air cools the heat generating device. Since the air flows out from the exhaust port, the air resistance can be reduced as much as possible, and since the cooling air does not hit the electronic parts, only the heat generating equipment can be cooled, and the cooling efficiency is improved.

In addition, since it is not necessary to leave a space between the heat generating device and the electronic component, it is possible to reduce the size of the housing by integrating and mounting the heat generating device. In addition, since the ventilation fan is installed at the lower end of the wind tunnel, the maintenance work does not become aerial work, and the maintenance work becomes easy.

Moreover, since the hot air does not pass through the ventilation fan, the life of the ventilation fan is extended. Further, by blocking the space between the heat generating device and the electronic component with a wind tunnel, the high temperature air does not adversely affect the electronic component.

Further, in the wind tunnel, the cooling air by the ventilation fan flows in a straight line from the lower side to the upper side in the wind tunnel, so that the air resistance can be reduced as much as possible and the cooling efficiency of the heat generating device can be improved.

Further, since the partition plate is provided with an opening and the dustproof filter is provided in the opening, dust and dust do not enter the housing.

Further, the heat generating device is a reactor, and the cooling air flows in a straight line from the bottom to the top in the space between the core and the coil on the outer circumference, and flows through the outer peripheral portion of the coil of the reactor and the inner wall of the wind tunnel. Since it flows in a straight line from the bottom to the top, it is possible to effectively suppress the heat generation of the reactor and improve the cooling efficiency.

It is a side sectional view of the control panel or the switchboard provided with the cooling structure which concerns on this invention. It is a transmission perspective view of the control board or a switchboard of the same as above. It is a perspective view which shows the heat generating device (reactor) of the control board or a switchboard of the same as above. Same as above. It is a cross-sectional view which shows the heat generation device (reactor) of a control board or a switchboard. It is a side sectional view which shows the conventional control board or a switchboard.

Hereinafter, a control panel or a switchboard having a cooling structure according to the present invention will be described in detail with reference to the accompanying drawings.

As shown in FIGS. 1 and 2, the control panel or switchboard 1 provided with the cooling structure according to the present invention has a door 3 provided on the front side 2a of the rectangular parallelepiped housing 2, and the front side of the housing bottom 2c. The intake port 4 is provided in 2a. The intake port 4 is provided with a grid-like fence 22. When the door 3 is opened, there is an opening 23 of the housing 2, and the internal electronic components 5a, 5b, 6a, 6b, the wind tunnel 7, and the heat generating devices 8a, 8b, 8c in the wind tunnel 7 can be inspected. .. The heat generating devices 8a, 8b, and 8c are not limited to the upper and lower three stages. The heat generating devices 8a, 8b, and 8c are examples, and may be arranged in two rows in the horizontal direction (see FIG. 3).

Further, the bottom portion 2c of the housing is provided with an intake port 4, and the intake port 4 for cooling the heat generating devices 8a, 8b, 8c is provided in the bottom portion 2c of the housing, so that the cooling air is straight from directly below the wind tunnel 7. It flows in a shape (arrows A and B, see FIG. 1) and reaches the exhaust port 11 at the upper part of the housing 2.

The switchboard means that the voltage received by the switchboard is stepped down from 100V to 200V, and the switchboard is usually installed outdoors, mainly in large buildings such as office buildings, factories, and stores. A control panel is a device that houses various electric devices for operating electric motors such as pumps and motors, heaters, protection in the event of an abnormality, and controlling and operating machines and production lines.

The electronic components 5a, 5b, 6a, 6b and the like are, for example, a board, a circuit breaker, etc., and are components that generate a small amount of heat and are not recommended for use in a high temperature environment. These electronic components 5a, 5b, 6a, 6b are attached to the inner wall of the housing 2 with an L-shaped angle or the like (not shown).

The bottom 2c of the housing 2 (where the intake port 4 exists) and the inside of the housing 2 provided with the wind tunnel 7 are partitioned by a partition plate 9, and the center of the partition plate 9 is used. A quadrangular opening 9a is opened in the portion, and a dustproof filter 10 is provided in the lower portion of the opening 9a. The dust filter 10 prevents dust and dirt from entering the inside of the housing 2.

Conventionally, since there is also a type in which a ventilation fan is provided in the intake port 4, the intake air speed becomes high, and external dust easily adheres to the heat generating devices 8a, 8b, 8c inside the housing 2. In the present invention, the ventilation fan 13 is provided at the lower end portion 7b of the wind tunnel 7, the partition plate 9 exists between the housing 2 and the housing bottom portion 2c, and the opening 9a is opened. Since the dustproof filter 10 is provided in the opening 9a, even if the intake air speed becomes high, the dustproof filter 10 is provided in the opening 9a, so that external dust easily enters the inside of the housing 2. There is no such thing.

The wind tunnel 7 is provided in a rectangular parallelepiped shape in the center of the housing 2, and the upper portion 7a is connected to the ceiling plate 2b in the housing 2 and is vertically located in the center of the housing 2. It is provided so as to form a linear ventilation path.

An exhaust port 11 is opened in the ceiling plate 2b, and a cube-shaped blower guide plate 12 is formed on the outside of the housing 2 of the exhaust port 11.

Further, a ventilation fan 13 is provided by support portions 14 and 14 at the lower end portion 7b (low place) of the wind tunnel 7, and when the ventilation fan 13 is driven, the ventilation fan 13 is provided at the housing bottom portion 2c of the housing 2. Cooling air is introduced from the intake port 4 (in the direction of arrow D, see FIG. 1), and the ventilation path is straight in the wind tunnel 7 from the ventilation fan 13 via the dust filter 10, and the exhaust is exhausted. A linear ventilation path (directions of arrows A and B, see FIG. 1) is formed up to the port 11.

Heat generating devices 8a, 8b, 8c are installed in the wind tunnel 7 in the vertical direction. The heat generating devices 8a, 8b, 8c are, for example, reactor 15 (see FIG. 3), and the temperature rises to, for example, an upper limit of 180 ° C.

For example, the reactor 15 (see FIG. 3) is composed of a core 16 inside and a coil 17 surrounding the core 16 thereof, and terminals 18a and 18b are configured on the upper and lower sides (see FIG. 4). Further, cooling air is blown in a straight line from the lower side to the upper side in the space S between the core 16 and the coil 17 (direction of arrow A, see FIGS. 1 and 3), and the outer peripheral portion (coil 17) and the above wind tunnel. Cooling air is also blown in a straight line between the inner wall and the inner wall (arrow B direction, see FIGS. 1 and 3), whereby the reactor 15 is effectively cooled.

Actually, as shown in FIG. 4 (see also FIGS. 1 and 2), the back plate 2d of the housing 2 is used as the back plate 7c of the wind tunnel 7, and the left plate 7d and the right plate 7e of the wind tunnel 7 are used. The front plate 7f is used as the wind tunnel 7. Further, as shown in FIGS. 3 and 4, the mounting plate 21d is fixed inside the back plate 2d of the housing 2, and the reactor 15 is attached to the mounting plate 21d at the “U” -shaped angles 21a, 21b, 21c. It is attached to the upper and lower two stages, and as shown in FIG. 4, the terminals 18a and 18b project from the openings at a plurality of corresponding positions of the front plate 7f of the wind tunnel 7.

Looking at the heat generating devices 8a, 8b, 8c (see FIG. 1), cooling air is blown upward from the ventilation fan 13 at the lower end 7b in the air cavity 7, and the coil surrounding the core 16 and its outer periphery is blown upward. In the space S between 17 and the air, cooling air is blown in a straight line from the bottom to the top in the direction of arrow A, and an arrow is formed between the outer peripheral portions (coils 17) of the heat generating devices 8a, 8b, 8c and the inner wall of the air cavity 7. The cooling air is blown in a straight line from the bottom to the top in the B direction, and as a result, the cooling air rises in a straight line from the bottom to the top and is discharged from the exhaust port 11 on the upper part (ceiling plate 2b) of the housing 2. (Arrow C direction). As a result, the heat generating devices 8a, 8b, 8c can be efficiently cooled.

Moreover, since the electronic components 5a, 5b, 6a, and 6b do not need to be cooled, they are outside the wind tunnel 7 and are not exposed to the cooling air.

Since the present invention is configured as described above, the operation of the present invention will be described below.
In the configurations shown in FIGS. 1 and 2, the heat generating devices 8a, 8b, and 8c are reactors 15 (see FIGS. 3 and 4). When the ventilation fan 13 at the lower end of the wind tunnel 7 is driven, cooling air is introduced into the housing 2 (inside the housing bottom 2c) from the intake port 4 at the housing bottom 2c (direction of arrow D), and the cooling air is dustproof. Dust and dust in the air are removed by the filter 10 and introduced into the ventilation fan 13 through the opening 9a.

Then, it is introduced into the wind tunnel 7 from the ventilation fan 13, and the heat generating devices 8a, 8b, 8c are cooled by the cooling air.

Specifically, the cooling air rises in a straight line from the lower side to the upper side in the space S between the core 16 of the reactor 15 and the coil 17 on the outer periphery (direction of arrow A, see FIGS. 1 and 3), and further the reactor. Cooling air rises in a straight line between the outer periphery of 17 and the inner wall of the wind tunnel 7 (in the direction of arrow B, see FIGS. 1 and 3), and is discharged from the exhaust port 11 of the ceiling plate 2b of the housing 2 (see the arrow B direction, FIGS. 1 and 3). Arrow C direction, see FIG. 1). That is, a ventilation fan 13 is mounted on the lower end portion 7b of the wind tunnel 7, the cooling air is pushed toward the heat generating devices 8a, 8b, 8c, and the air heated by the heat generating devices 8a, 8b, 8c is discharged to the wind tunnel 7. The structure is such that the air is discharged from the exhaust port 11 directly connected to the air.

Since the intake port 4 is provided in the housing bottom 2c (lower part of the wind tunnel 7), the housing bottom 2c has an intake port 4 for cooling the heat generating devices 8a, 8b, 8c. Then, the cooling air flows in a straight line from directly below the wind tunnel 7 (the ventilation fan 13 is provided at the lower end portion 7b (low place) of the wind tunnel 7) and reaches the exhaust port 11 at the upper part of the housing 2.

Further, since the cooling air does not hit the other electronic parts 5a, 5b, 6a, 6b, the parts that do not need to be cooled are not cooled.

In the present invention, as described above, when the ventilation fan 13 is driven, the intake port 4 is provided at the bottom portion 2c of the housing, so that the cooling air is linearly generated in the air cavity 7 from the lower side to the upper side. , 8c is cooled (in the direction of arrows A and B) and flows out from the exhaust port 11 (in the direction of arrow C), so that the air resistance can be reduced as much as possible, and the electronic parts 5a, 5b, 6a and 6b are cooled. Since it is not exposed to air, only the heat generating devices 8a, 8b, and 8c can be cooled, and the cooling efficiency is improved.

Further, since it is not necessary to leave a space between the heat generating devices 8a, 8b, 8c and the electronic components 5a, 5b, 6a, 6b, the heat generating devices 8a, 8b, 8c can be integrated and mounted in the wind tunnel 7 to form a housing. 2 can be miniaturized. Further, since the ventilation fan 13 is installed at the lower end portion 7b (low place) of the wind tunnel 7, the maintenance work does not become a high place work, and the maintenance work becomes easy.

Further, since the hot air does not pass through the ventilation fan 13, the life of the ventilation fan 13 is extended. Further, by blocking the space between the heat generating devices 8a, 8b, 8c and the electronic components 5a, 5b, 6a, 6b with the wind tunnel 7, the high temperature air does not adversely affect the electronic components 5a, 5b, 6a, 6b. ..

Further, in the wind tunnel 7, the cooling air by the ventilation fan 13 flows in a straight line from the lower side to the upper side in the wind tunnel 7, so that the air resistance can be reduced as much as possible, and the heating devices 8a, 8b, 8c can be cooled. It can improve efficiency.

Further, since the partition plate 9 is provided with the opening 9a and the dustproof filter 10 is provided in the opening 9a, dust and dirt do not enter the housing 2.

Further, the heat generating devices 8a, 8b, 8c are, for example, reactor 15, and the cooling air flows linearly from the lower side to the upper side in the space S between the core 16 and the outer peripheral coil 17 (arrow A direction,). (See FIGS. 1 and 3), since the outer peripheral portion of the reactor 15 and the inner wall of the wind tunnel 7 flow in a straight line from the lower side to the upper side (direction of arrow B, see FIGS. 1 and 3), the heat generated by the reactor 15 is generated. Can be effectively suppressed and the cooling efficiency can be improved.

According to the control panel or the switchboard 1 provided with the cooling structure according to the present invention, the cooling efficiency can be improved, the housing can be miniaturized, and the practical effect is high.

1 Control panel or switchboard with cooling structure 2 Housing 2a Front side 2b Ceiling plate 2c Housing bottom 4 Intake ports 5a, 5b Electronic components 6a, 6b Electronic components 7 Ventilation 7a Upper 7b Lower end 8a to 8c Heat generating equipment 9 Partitions Plate 9a Opening 10 Dustproof filter 11 Exhaust port 13 Ventilation fan 15 Reactor 16 Core 17 Coil S Space

Claims (4)

In the housing, an intake port is provided on the front side of the bottom of the housing, and an opening is provided between the bottom of the housing and the inside of the housing.
A wind tunnel linear in the vertical direction is provided in the housing, and a ventilation fan is provided at the lower end of the wind tunnel.
A dustproof filter is provided in the above opening.
The upper part of the wind tunnel is connected to the ceiling plate in the housing, and the ceiling plate is provided with an exhaust port.
Multiple heat generating devices are installed in the above wind tunnel.
Further, a control panel or a switchboard having a cooling structure, characterized in that electronic components that do not need to be cooled are provided outside the wind tunnel in the housing. Since the intake port is provided at the bottom of the housing, the cooling air from the ventilation fan flows in a straight line from the bottom to the top in the wind tunnel and is discharged to the outside of the housing from the exhaust port. A control panel or a power distribution panel provided with the cooling structure according to claim 1. The control panel or switchboard having a cooling structure according to claim 1 or 2, wherein a partition plate is provided between the bottom of the housing and the inside of the housing, and the partition plate is provided with the opening. The heat generating device is a reactor, and the cooling air flows in a straight line from the bottom to the top in the space between the core of the reactor and the coil on the outer circumference.
The cooling structure according to any one of claims 1 to 3, wherein the cooling air flows linearly from the lower side to the upper side of the outer peripheral portion of the coil of the reactor and the inner wall of the wind tunnel. Control board or switchboard.

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