WO2023079790A1

WO2023079790A1 - Cubicle

Info

Publication number: WO2023079790A1
Application number: PCT/JP2022/027049
Authority: WO
Inventors: 正典宍戸; 深大佐藤
Original assignee: 株式会社日立産機システム
Priority date: 2021-11-08
Filing date: 2022-07-08
Publication date: 2023-05-11
Also published as: JP2023069834A

Abstract

Provided is a cubicle in which measures against temperature rise can be more efficiently taken while reducing heat intrusion from the outer surface due to the radiation of the Sun. This cubicle comprises: a box 10 for housing power receiving and transforming equipment; a door 20 with which the box is provided; a side plate 40 with which a side portion of the box is provided; and light shielding plates 22, 42 attached to the door and the side plate and preventing direct sunlight. The light shielding plates 22, 42 are tilted and attached so that the distance between the light shielding plates 22, 42 and the wall surface widens at an upper portion as compared with that at a lower portion, thereby facilitating the flow of air toward the upper portion.

Description

switchboard

The present invention relates to switchboards, and more particularly to heat dissipation technology for switchboards.

A switchboard is a power receiving and transforming facility for receiving high-voltage electricity from a power company. It contains power receiving and breaking equipment, transformer equipment, power distribution equipment, and measuring equipment for measuring each power in a box. Switchboards are sometimes called switchgears or cubicles, depending on the incoming voltage. In a switchboard installed outdoors, it is necessary to take measures to prevent the temperature inside the box from rising due to heat intrusion from the outer surface due to solar radiation.

Fig. 13 shows an example of a conventional electrical equipment storage box that avoids radiant heat from the outside such as direct sunlight (see Patent Document 1). A light shielding plate 3a for the side and door is attached to the side and door 2 of the main body 1 of the electrical equipment storage box by means of boss studs 4, forming a gap for air circulation between the box and the wall. Also, a roof light shielding plate 3b is attached by boss studs 4 to the upper part of the main body 1 of the box.

JP-A-2000-228597

In switchboards installed outdoors, there is a problem that the temperature inside the switchboard rises due to the heat received from the sun, which shortens the service life of the built-in electronic devices in particular.

Patent Document 1 discloses an electrical equipment storage box in which a light shielding plate is attached to the side surface of the box body and the door in order to avoid external radiant heat such as direct sunlight, but the light shielding plate is parallel to the wall surface. installed. As a result, warm air stays between the wall surface of the box or door and the light shielding plate, and the temperature inside the box rises due to the staying heat.

An object of the present invention is to provide a switchboard that can more efficiently take countermeasures against temperature rise while reducing heat penetration from the outer surface due to solar radiation.

In order to solve the above problems, in the switchboard of the present invention, the light shielding plate attached to the side surface of the box and the door is attached at an angle so that the distance from the wall surface is wider at the top than at the bottom. to promote air flow.

To give an example of the "distribution board" of the present invention,
A box that houses a power receiving and transforming facility, a door provided in the box, a side plate provided on a side of the box, and a light shielding plate attached to the door and the side plate to block direct sunlight. A switchboard,
The light-shielding plate is inclined so that the distance from the wall surface is wider in the upper part than in the lower part.

According to the present invention, it is possible to reduce heat penetration from the outer surface due to solar radiation, promote air flow upward between the wall surface and the light shielding plate, and prevent warm air from stagnation. Then, it is possible to efficiently prevent the temperature rise of the switchboard.

Problems, configurations, and effects other than those described above will be clarified by the following description of the embodiments.

It is a figure which shows the switchboard of Example 1 of this invention. It is a figure which shows the attachment structure of a light-shielding plate. It is a figure which shows the switchboard which arranged two boards side by side. It is a figure which shows the problem at the time of arranging a plurality of boards side by side. It is a figure which shows the switchboard of Example 2 of this invention. It is a figure which shows the switchboard of Example 3 of this invention. It is a figure which shows the switchboard of Example 4 of this invention. It is a figure which shows the problem at the time of attaching a light-shielding plate inclining. It is a figure which shows the switchboard of Example 5 of this invention. It is a figure which shows the switchboard of Example 6 of this invention. It is a figure which shows the switchboard of Example 7 of this invention. It is a figure which shows the expansion method of a board. It is a figure which shows an example of the box for electrical equipment storage which attached the conventional light-shielding plate.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. However, the present invention should not be construed as being limited to the contents of the examples described below. Those skilled in the art will easily understand that the specific configuration can be changed without departing from the idea or gist of the present invention.
In addition, in the configuration of the invention described below, the same reference numerals may be used in common for the same parts or parts having similar functions in different drawings, and redundant description may be omitted.

Fig. 1 shows a switchboard of Embodiment 1 of the present invention, Fig. 1(a) is its front view and Fig. 1(b) is its left side view. Example 1 comprises a switchboard with one box.

The switchboard in FIG. 1 is composed of a box 10 made of a steel plate material, doors 20 attached to the front and rear of the box 10, and a roof 30 provided on the top of the box 10. Side plates 40 are attached to both sides of the box 10, and side plate attachment light shielding plates 42 are attached to the side plates 40. - 特許庁Door attachment light shielding plates 22 are attached to the front and rear doors 20 having door handles 24, respectively. The roof 30 is provided with roof covers 32 on both sides and has a ventilation opening 34 at the top of the roof.

As a characteristic configuration of this embodiment, the door attachment light shielding plates 22 attached to the front and rear doors 20 are attached at an angle so that the distance from the door 20 is wider at the top than at the bottom. Further, the side plate attachment light shielding plate 42 attached to the side plate 40 is attached at an angle so that the distance from the wall surface is larger at the upper portion than at the lower portion. That is, the

light blocking plates

22 and 42 attached to the front, back, and sides of the board are angled so that the upper portion is wider than the lower portion. With this configuration, it is possible to promote the upward air flow between the wall surface and the light shielding plate and prevent the warm air from stagnation.

FIG. 2 shows a mounting structure in which the

light shielding plates

22 and 42 are attached to the door 20 and the side plate 40 at an angle. FIG. 2(a) uses a substantially U-shaped mounting bracket 44, one surface of which is bent at a right angle, and the other surface of which is bent at an angle larger than the right angle so that the interval gradually widens. The mounting bracket 44 has a right-angled surface attached to the door 20 or the side plate 40 and the other surface attached to the

light shielding plates

22 and 42 . The attachment may be performed by bolts, screws, welding, or the like. FIG. 2(b) uses a stud or pole 45, one end of the stud or pole 45 being a right angle and the other end being an inclined surface. A stud or pole 45 is attached to the door 20 or the side plate 40 on its right-angled side and to the

light blocking plates

22, 42 on the other inclined side. The attachment may be performed by bolts, screws, welding, or the like.

According to this embodiment, the light shielding plate attached to the side plate or the door is attached at an angle so that the distance from the wall surface is wider in the upper part than in the lower part, thereby promoting the air flow in the upper direction. Then, it is possible to prevent the warmed air from stagnation and efficiently prevent the temperature rise of the switchboard.

FIG. 3 shows a switchboard configured by arranging two unit boards, each consisting of a box 10, a door 20, and a roof 30, side by side. FIG. 3(a) is its front view, and FIG. 3(b) is its left side view. As shown in FIG. 3(a), two boards are arranged side by side, and side plates 40 are attached to both outer sides. Then, the side plate attachment light shielding plate 42 is attached to the side plate 40 at an angle so that the upper portion is wider than the lower portion. Between the two roofs 30 an intermediate roof cover 33 is attached. Other configurations are the same as those of the first embodiment.

Fig. 4 shows the problem of a switchboard with multiple boards arranged side by side as shown in Fig. 3. 4(a) is a front view in which two boards are arranged side by side, FIG. 4(b) is a left side view, and FIG. 4(c) is an enlarged plan view seen from above. As shown in the plan view of FIG. 4(c), when the door 20 of the corresponding panel on the left side is rotated around the door hinge 26 and opened, the angle is such that the upper portion of the door mounting light shielding plate 22 widens. As a result, the door-mounted light-shielding plate 22 interferes with the door 20 and the door-mounted light-shielding plate 22 of the adjacent panel on the right side. Therefore, the door cannot be fully opened as shown in the figure. The interference of the door-mounted light-shielding plate 22 is more likely to occur at the upper part of the door where the distance from the wall surface is widened.

Embodiment 2 solves this problem, and the switchboard of this embodiment is shown in FIG. Fig. 5(a) is a front view of two boards side by side, Fig. 5(b) is a left side view, Fig. 5(c) is an enlarged plan view from above, Fig. 5(d) is a light shielding plate attached to a door. It is the figure seen from the front.

As shown in the figure, the door mounting light shielding plate 22 is attached so that the width of the door mounting light shielding plate 22 is shorter than the width of the door 20 and a gap is formed on the door handle 24 side and the door hinge 26 side. In the example of the figure, the width of the door mounting light shielding plate 22 provided on the adjacent board on the right side is shortened and a gap is provided so that the door mounting light shielding plate 22 does not interfere when the door of the corresponding board on the left side is opened. Also, a gap is provided so that the door mounting light shielding plate 22 provided on the corresponding panel on the left side does not hit the door 20 of the adjacent panel on the right side. Other configurations in the second embodiment are the same as those in the first embodiment.

According to the present embodiment, similarly to the first embodiment, it is possible to prevent the retention of warm air between the wall surface and the light shielding plate, efficiently prevent the temperature rise of the switchboard, and when a plurality of boards are arranged side by side, The door can be opened sufficiently by preventing interference with the door of the adjacent panel and the light shielding plate when the door is opened and closed.

Fig. 6 shows the switchboard of Example 3. FIG. 6(a) is a front view of two boards arranged side by side, FIG. 6(b) is an enlarged plan view seen from above, and FIG.

In the switchboard of Embodiment 2 shown in FIG. 5, as shown in FIG. 5(d), the width of the door mounting light shielding plate 22 is constant from the top to the bottom, and a gap of constant width is provided from the top to the bottom. be. Therefore, the area that receives direct sunlight from the gap increases.

The switchboard of this embodiment solves this problem, and as shown in FIGS. It has a shape corresponding to the mounting angle of the light shielding plate 22 . The gap provided on the side of the door hinge 26 has a constant width. That is, the width of the door-mounted light shielding plate 22 is made into a one-sided trapezoidal shape in which the lower portion is wider than the upper portion.

According to this embodiment, the width of the door-mounted light-shielding plate is made into a trapezoidal shape on one side with the lower part wider than the upper part, so that the area of the door that receives direct sunlight can be reduced, and the switchboard can be more efficiently operated. temperature rise can be prevented.

Fig. 7 shows the switchboard of Example 4. Fig. 7(a) is a front view of two boards side by side, Fig. 7(b) is a left side view, Fig. 7(c) is an enlarged plan view from above, Fig. 7(d) is a light shielding plate attached to a door. Fig. 3 shows manufacturing;

In the switchboard of this embodiment, instead of providing the gaps in the second and third embodiments, the door-mounted light-shielding plate 22 is bent according to the mounting angle of the door-mounted light-shielding plate 22 of the adjacent board. The bending may be done toward the wall surface so that the bending area of the upper portion is larger than that of the lower portion on both the door handle side and the door hinge side. As shown in FIG. 7(d), the light shielding plate can be manufactured by bending a flat plate state before bending along the bending lines to obtain a shape after bending.

According to this embodiment, the door-mounted light-shielding plate is bent according to the mounting angle of the adjacent door-mounted light-shielding plate. To prevent warm air from stagnation between the wall surface and the light shielding plate, to minimize the area of the door exposed to direct sunlight, and to more efficiently prevent the temperature rise of the switchboard.

Fig. 8 shows a switchboard in which the light shielding plate attached to the side plate or door is tilted so that the distance between the upper part and the wall surface is wider than the lower part, and is exposed to direct sunlight from the sun. Since the upper part of the light shielding plate is angled so as to be wide, it receives direct sunlight from above as shown in the figure.

Embodiment 5 is intended to solve this problem. Fig. 9 shows a switchboard of this embodiment, Fig. 9(a) is a front view showing two boards side by side, and Fig. 9(b) is a left side view. . In this embodiment, the roof 30 and the roof cover 32 are made slightly larger, and protrude so as to cover the upper portions of the door attachment light shielding plate 22 and the side plate attachment light shielding plate 42 . In the illustrated example, as shown in FIG. 9(a), the roof cover 32 is spread laterally so as to cover the upper part of the side plate mounting light shielding plate 42, and as shown in FIG. 9(b), the door mounting light shielding plate A roof 30 and a roof cover 32 are extended in the longitudinal direction so as to cover the upper part of 22 to prevent entry of direct sunlight from the upper part.

According to this embodiment, the side plate and the light shielding plate attached to the door are attached at an angle so that the distance from the wall surface is wider at the upper part than at the lower part, and the roof and roof cover are widened, and the door attachment light shielding plate and the side plate are attached. Since the upper part of the light shielding plate is covered, it is possible to prevent the penetration of direct sunlight from the upper part and prevent the temperature rise of the switchboard.

Fig. 10 shows another embodiment that prevents direct sunlight from entering from above. Fig. 10 shows a switchboard of Example 6, Fig. 10(a) is a front view in which two boards are arranged side by side, and Fig. 10(b) is a left side view.

In this embodiment, as shown in FIG. 10(b), the roof 30 and the roof cover 32 are extended to the front side and the back side so as to cover the upper part of the door mounting light shielding plate 22. Further, as shown in FIG. 10(a), side eaves 36 are attached to the roof covers 32 on both sides so as to cover the upper portions of the side plate attachment light shielding plates 42, thereby preventing entry of direct sunlight from above.

According to this embodiment, the roof and the roof cover are extended in the front-rear direction, the side eaves are attached to the roof covers on both sides, and the tops of the door-mounted light-shielding plate and the side-plate-mounted light-shielding plate are covered. Prevents direct sunlight from entering and prevents the temperature rise of the switchboard.

Fig. 11 shows a switchboard of Example 7 in which three boards are arranged side by side. FIG. 11(a) is a front view in which three boards are arranged, and FIG. 11(b) is a left side view.

As shown in FIG. 11(a), the side plates 40 are arranged on both sides of the three boards arranged side by side, and the side plate mounting light shielding plates 42 are inclined so that the distance between the upper side plate 40 and the wall surface is wider than the lower side plate. and install. Further, as shown in FIG. 11(b), door mounting light shielding plates 22 are attached to the front and rear doors 20 at an angle so that the upper portion of the door 20 has a greater distance from the wall surface than the lower portion.

FIG. 12 shows a method of making a three-sided distribution board by adding more boards from a two-sided distribution board in which two boards are arranged side by side. The side plate 40, the side plate mounting light shielding plate 42 and the roof cover 32 are removed from the two-sided switchboard. Then, an additional board is added, and the removed side plate 40, the side board attachment light shielding plate 42 and the roof cover 32 are attached to the added board. An intermediate roof cover 33 is added between the panels.
In this embodiment, a switchboard in which three boards are arranged side by side is shown, but the number of boards may be four or more.

In this embodiment, the light shielding plate attached to the side plate and the door is attached at an angle so that the distance from the wall surface is wider at the upper part than at the lower part, thereby preventing the temperature rise of the switchboard and increasing the power capacity by increasing the board. It can be a switchboard according to

It should be noted that the present invention is not limited to the above-described embodiments, and includes various modifications. For example, the above-described embodiments have been described in detail in order to explain the present invention in an easy-to-understand manner, and are not necessarily limited to those having all the described configurations. In addition, it is possible to replace part of the configuration of one embodiment with the configuration of another embodiment, and it is also possible to add the configuration of another embodiment to the configuration of one embodiment. Moreover, it is possible to add, delete, or replace a part of the configuration of each embodiment with another configuration.

DESCRIPTION OF SYMBOLS 1... Box 2... Door 3a... Door light shielding plate 3b... Roof light shielding plate 4... Stud 10... Box body 20... Door 22... Door mounting light shielding plate 24... Door handle 26... Door hinge 30... Roof 32... Roof cover 33... Intermediate roof cover 34 Ventilation port 36 Side eaves 40 Side plate 42 Side plate mounting light shielding plate 44 Mounting bracket 45 Stud, pole

Claims

A box that houses a power receiving and transforming facility, a door provided in the box, a side plate provided on a side of the box, and a light shielding plate attached to the door and the side plate to block direct sunlight. A switchboard,
The switchboard, wherein the light shielding plate is attached at an angle so that the distance from the wall surface is wider in the upper part than in the lower part.
In the switchboard according to claim 1,
The light-shielding plate has a substantially U-shaped mounting bracket in which one surface is bent at a right angle and the other surface is bent at an angle larger than the right angle so that the interval gradually widens, or one end is a right angle and the other end is inclined. A switchboard, characterized in that it is attached to said door or said side plate with studs or poles having flat surfaces.
In the switchboard according to claim 1,
A roof is provided on the box body,
comprising a roof cover on the side plate;
A switchboard, wherein the roof is extended in the longitudinal direction so as to cover the light shielding plate attached to the door, and the roof cover is extended in the lateral direction so as to cover the light shielding plate attached to the side plate.
In the switchboard according to claim 1,
A roof is provided on the box body,
a roof cover on the side plate;
A switchboard, wherein the roof is extended in the longitudinal direction so as to cover the light shielding plate attached to the door, and side plate eaves are attached to the roof cover so as to cover the light shielding plate attached to the side plate.
In the switchboard according to claim 1,
Two or more boards composed of the box and the door are arranged side by side,
Side plates are provided on both sides of two or more boards arranged side by side,
A switchboard, wherein the light shielding plate is attached to the door and the side plate.
In the switchboard according to claim 5,
A switchboard, wherein the width of a light shielding plate attached to the door is shorter than the width of the door, and the light shielding plate is attached so as to form a gap on both sides.
In the switchboard according to claim 6,
A switchboard characterized in that the light shielding plate is attached so that a gap of a certain width is formed on the door handle side and the door hinge side.
In the switchboard according to claim 6,
A switchboard characterized in that a gap provided on the side of a door handle of an adjacent board has a trapezoidal shape on one side corresponding to the mounting angle of a light shielding plate attached to the door of the corresponding board.
In the switchboard according to claim 5,
A switchboard characterized in that the light shielding plate attached to the door is bent in the direction of the wall surface according to the mounting angle of the light shielding plate of the adjacent panel.
In the switchboard according to claim 5,
A switchboard characterized in that the side plate is detachable, and an additional board can be attached by removing the side plate.