JP2009194963A - Enclosed switchboard - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To obtain an enclosed switchboard where heat generated from functional units accommodated in unit rooms on each stage is discharged outside through a common ventilating passage and it is easy to get chimney effect thereby. <P>SOLUTION: In the enclosed switchboard, which includes rows 20 and 21 of multistage unit chambers where unit chambers to house functional units 6 are constituted vertically into multistage, the rows 20 and 21 of multistage unit chambers are provided with ventilating passages 9 and 18, which are common to the functional units 6 on each stage extending vertically along the rows 20 and 21 of multistage unit chambers, so that the heat generated from the functional units 6 housed in the unit chambers on each stage of the rows 20 and 21 of multistage unit chambers may be discharged to the common ventilating passages 9 and 18, and that they may be discharged from ventilating ports 5a positioned at the tops or above the ventilating passages 9 and 18. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a closed switchboard, and more particularly to a ventilation structure for heat generated inside.

  FIG. 5 is a front sectional view showing a conventional closed switchboard disclosed in Patent Document 1, and particularly shows its ventilation structure. FIG. 6 is a plan view seen in the direction of the arrow along the line HH in FIG. An upper device 42 and a lower device 43 are arranged in the vertical direction of the box 41. The upper device 42 is placed on the partition plate 44 and arranged in the upper stage in the box 41, and both sides are partitioned by the surrounding plate 45. Heat generated from the upper device 42 is discharged to the outside through the ceiling ventilation port 46. On the other hand, the lower stage equipment 43 is arranged in the lower stage in the box body 41, and partition plate ventilation ports 47 are provided on both sides of the partition plate 44 on which the upper stage device 42 is placed. The heat generated from the lower equipment 43 does not pass through the chamber 48 of the upper equipment 42, and the ceilings on both sides pass from the partition plate ventilation openings 47 through the ventilation passages 49 partitioned by the enclosure 45 and the box 41. It is discharged from the ventilation port 50 to the outside.

Japanese Utility Model Publication No. 59-132303 (Figs. 4-6)

The conventional closed switchboard is provided with a ventilation passage 49 for each stage so that the heat generated from the lower equipment 43 does not pass through the chamber of the upper equipment 42. However, as the equipment stack increases, It is necessary to reduce the cross-sectional area. In order to keep the cross-sectional area of the ventilation passage 50 constant, the outer shape of the box 41 must be increased. Furthermore, the device housed in the upper stage has a problem in that the chimney effect becomes difficult to obtain because the distance from the outer casing 41, which is the final outlet of heat, to the ceiling ventilation port 46 becomes shorter.
The present invention has been made to solve the above-described problems, and heat generated from the functional units housed in the unit chambers of the respective stages is discharged to the outside through a common ventilation passage, and the chimney It aims at obtaining the closed switchboard which an effect is easy to be acquired.

  The closed switchboard according to the present invention is a closed switchboard having a multistage unit chamber row in which unit rooms in which functional units are accommodated are configured in multiple stages in the vertical direction, and the multistage unit chamber row is arranged along the multistage unit chamber row. A common ventilation passage is provided for the functional units of each stage extending in the vertical direction, and heat generated from the functional units housed in the unit chambers of each stage of the multi-stage unit chamber row is shared by the ventilation passage. Are discharged from a ventilation port located above or above the ventilation passage.

  Further, the closed switchboard according to the present invention is a closed switchboard having a multistage unit chamber row in which the unit chambers in which the functional units are housed are configured in multiple stages in the vertical direction, and a partition plate is interposed in the multistage unit chamber row. A common duct chamber is provided for the functional units of each stage extending in the vertical direction along the multistage unit chamber row, and the duct chamber is provided with wiring of the functional units, and the multistage unit is provided in the duct chamber. Heat generated from the functional units housed in the unit chambers of each stage of the chamber row is exhausted from the vents of the partition plate, and exhausted from the vents located above or above the duct chamber. Is.

  Further, the closed switchboard according to the present invention is provided with a busbar chamber in which a busbar connected to the functional unit is disposed above the duct chamber, and the duct chamber has units in each stage of the multistage unit chamber row. Heat generated from the functional unit housed in the room is discharged from the ventilation hole of the partition plate, and discharged to the outside from the ventilation hole of the busbar room located above the duct room. .

  Furthermore, the closed switchboard according to the present invention is a closed switchboard having a multistage unit chamber row in which unit rooms in which functional units are accommodated are configured in multiple stages in the vertical direction, and a partition plate is interposed in the multistage unit chamber row. A vertical bus room is provided along which a bus bar extending in the vertical direction along the multi-stage unit chamber row and connected to the functional unit is disposed, and a horizontal bus bar connected to the bus bar of the vertical bus room is provided above the vertical bus room Is provided, and heat generated from the functional units housed in the unit chambers of each stage of the multi-stage unit chamber row is exhausted from the ventilation openings of the partition plates in the vertical bus room, respectively. At the same time, the air is exhausted to the outside from the ventilation port of the horizontal bus room located above the vertical bus room.

  According to the closed switchboard of the present invention, in the closed switchboard having a multistage unit chamber row in which the unit chambers in which the functional units are accommodated are configured in multiple stages in the vertical direction, the multistage unit chamber row includes the multistage unit chamber row. In addition, a common ventilation passage is provided for the functional units of each stage extending in the vertical direction, and heat generated from the functional units housed in the unit rooms of each stage of the multi-stage unit chamber row is used for the common ventilation. Since it is discharged to the passages and exhausted from the ventilation port located above or above the ventilation passage, the common ventilation passage is provided for the functional units from the lower unit room to the upper unit room. The convection due to the chimney effect is improved and the ventilation efficiency is improved to suppress the temperature rise inside the functional unit. Reduction can also be achieved.

  Further, according to the closed switchboard of the present invention, the multi-stage unit chamber row is provided with a common duct chamber for the functional units of each stage extending in the vertical direction along the multi-stage unit chamber row with a partition plate interposed therebetween. The duct chamber is provided with wiring of the functional unit, and heat generated from the functional unit housed in the unit chamber of each stage of the multi-stage unit chamber row is supplied to the duct chamber from the ventilation opening of the partition plate. Since each is discharged and exhausted from the ventilation port located above or above the duct chamber, a common duct chamber exists for functional units from the lower unit chamber to the upper unit chamber, The convection due to the chimney effect is improved and the ventilation efficiency is improved, so that the temperature rise inside the functional unit can be suppressed, and the common ventilation passage can make the system compact.

  Further, according to the closed switchboard of the present invention, a busbar chamber in which a busbar connected to the functional unit is disposed is provided above the duct chamber, and the duct chamber is provided with each stage of the multistage unit chamber row. Since the heat generated from the functional unit housed in the unit room is discharged from the ventilation port of the partition plate, and is discharged to the outside from the ventilation port of the bus bar room located above the duct chamber, Both the heat from the functional unit of each stage and the heat of the busbar are discharged to the outside from the ventilation port of the busbar room, and a ventilation passage with a large difference in height from the duct room to the ventilation port of the busbar room is made, improving ventilation efficiency In addition, the temperature rise in the functional unit and the bus can be suppressed.

  Furthermore, according to the closed switchboard of the present invention, a vertical busbar chamber in which a busbar extending in the vertical direction along the multistage unit chamber row and connected to a functional unit is arranged in the multistage unit chamber row along the multistage unit chamber row. A horizontal bus chamber in which a horizontal bus connected to the bus of the vertical bus chamber is disposed above the vertical bus chamber, and the vertical bus chamber has a unit chamber in each stage of the multi-stage unit chamber row. The heat generated from the functional unit housed in the vent is exhausted from the vents of the partition plate and exhausted to the outside from the vents of the horizontal bus bar located above the vertical bus bar. Therefore, both the heat from the functional unit of each stage and the heat of the bus are discharged to the outside from the vent of the horizontal bus room, and a ventilation passage with a large difference in height from the vertical bus room to the vent of the horizontal bus room is created. , Change Efficiency is improved, and it is possible to suppress an increase in the temperature of the functional units inside and bus.

Embodiment 1 FIG.
1 shows a closed switchboard according to Embodiment 1 of the present invention, in which (a) is a front view, (b) is a left side view of the front view (a), and (c) is a front view ( It is a reverse view of a). 2 is a cross-sectional view of the closed switchboard according to the first embodiment, in which (a) is a cross-sectional view taken along line AA in FIG. 1 (a), and (b) is a cross-sectional view taken along line BB in FIG. 1 (a). (C) is a cross-sectional view taken along the line CC in FIG. 2 (b), and (d) is a cross-sectional view taken along the line DD in FIG. 1 (a).

  In the figure, the closed switchboard is vertically long, a vertical bus room 8 extending vertically from the lower part to the upper part is arranged in the central part {FIG. 2 (b)}, and the functional unit 6 is accommodated in the front part. A front multi-stage unit chamber row 20 configured by stacking unit chambers in the vertical direction and a front duct chamber 9 are arranged, and a unit chamber containing functional units 6 is stacked in the vertical direction on the back side. The rear multistage unit chamber row 21 and the rear duct chamber 18 are arranged. The front multi-stage unit chamber row 20 and the back multi-stage unit chamber row 21, and the front duct chamber 9 and the back duct chamber 18 are arranged symmetrically with respect to the central vertical bus chamber 8. In addition, 1 is a box body of a closed switchboard.

  A wiring chamber 14 is disposed above the front multi-stage unit chamber row 20 and the front duct chamber 9 {FIGS. 2A and 2D}. A bus bar room 11 is arranged. The front multi-stage unit chamber row 20 is partitioned between the steps and between the wiring chambers 14 by a unit partition plate 15 (FIGS. 2C and 2D), and the back multi-stage unit chamber row 21 is formed between the steps and the horizontal bus room. 14 is partitioned by the unit partition plate 15 {FIG. 2 (a)}. Further, the front and back multi-stage unit chamber rows 20 and 21 are partitioned between the front and back duct chambers 9 and 18 by a duct chamber surrounding plate 22 (FIGS. 2B and 2C), and between the vertical busbar chambers 8. Is partitioned by a busbar chamber cover {FIGS. 2A and 2B}, and is separated from the outside by a box 1 and unit chamber doors 2 at each stage {FIG. 1A}.

  The bus room cover 7 of the front multi-stage unit chamber row 20 is provided with a ventilation port 7a in each unit chamber at a position facing the back duct chamber 18 (FIGS. 2B, 2C, and 2D). The bus bar cover 7 of the uppermost front multi-stage unit chamber row 20 is provided with a ventilation port 7 a facing the horizontal bus bar chamber 11. Similarly, a ventilation port 7a is provided in each unit chamber at a position facing the front duct chamber 9 in the bus chamber cover 7 of the back multi-stage unit chamber row 21 (FIGS. 2B and 2C). Functional units having main circuit devices for opening / closing / protecting loads and protection control relays are housed in the unit chambers at the front and back stages, respectively.

  In the front duct chamber 9, wiring to or from each functional unit 6 is arranged, and the front thereof is closed by the duct chamber door 3. A partition plate 13 having a ventilation port 13a is provided between the front duct chamber 9 and the horizontal bus chamber 11 {FIG. 2 (a)}, and the front duct chamber 9 and the vertical bus chamber 8 are the enclosure plate 23 of the vertical bus chamber 8. {FIG. 2 (b)}. In the back surface duct chamber 18, wiring to or from each functional unit 6 is arranged, and the back surface is closed by the duct chamber door 3. A partition plate 19 having a ventilation port 19a is provided between the back duct chamber 18 and the horizontal bus chamber 11 {FIG. 2 (d)}, and the back duct chamber 18 and the vertical bus chamber 8 are the enclosure plate 23 of the vertical bus chamber 8. {FIG. 2 (b)}.

  A vertical bus 10 is provided in the vertical bus chamber 8. The vertical bus 10 is connected to the horizontal bus 12 via a connecting conductor 16 at the top. A horizontal bus 12 is provided in the horizontal bus chamber 11 in the horizontal direction. The horizontal bus room 11 is partitioned from the wiring room 14 by the bus room cover 7. The horizontal bus bar 11 is provided with a horizontal bus bar door 5 on the back surface thereof, and the horizontal bus bar door 5 is provided with a ventilation port 5a. A space between the horizontal bus chamber 11 and the wiring chamber 14 is partitioned by a bus chamber cover 7 and a front duct chamber cover 17. The wiring chamber 14 accommodates the wiring between the plurality of panels, and the wiring chamber door 4 is provided on the front surface. In this way, the front and back multi-stage unit chamber rows 20 and 21, the front and back duct chambers 9 and 18, and the wiring chamber 14 are partitioned, and the vertical bus bar chamber 8 and the horizontal bus bar chamber 11 communicate with other chambers. It is partitioned.

  Next, the functional units 6 housed in the front and back unit chambers are connected to the vertical bus 10 by a power junction (not shown) and supplied with power, and supply power to a connected load (not shown). Open / close, protect, and control the load. The devices inside the functional unit 6 at each stage generate heat by energization, and the heat is discharged from the ventilation port 7a to the front duct chamber 9 and the back duct chamber 18 common to the respective stages from the ventilation port cover 7a.

  The heat exhausted to the front duct chamber 9 rises in the front duct chamber 9 and is exhausted to the horizontal bus chamber 11 through a ventilation port 13 a provided in the partition plate 13 with the horizontal bus chamber 11. Similarly, the heat discharged to the back duct chamber 18 rises in the back duct chamber 18 and is discharged to the horizontal bus chamber 11 from a ventilation port 19 a provided in the partition plate 19 with the horizontal bus chamber 11. The heat discharged from the ventilation ports 13 a and 19 a to the horizontal bus chamber 11 is discharged from the ventilation port 5 a provided in the horizontal bus chamber door 5 to the outside of the box 1. The heat generated from the vertical bus 10 rises up the vertical bus 10 and is discharged from the communicating horizontal bus chamber 11 to the outside of the box 1 through the ventilation port 5a. Similarly, the heat generated from the horizontal bus 12 is discharged from the horizontal bus chamber 11 to the outside of the box 1 through the ventilation port 5a.

  In this way, the heat generated from the functional units 6 in each stage of the multistage unit chamber rows 20 and 21 is discharged to the front and back duct chambers 9 and 18 serving as a common ventilation passage, and rises to the upper ventilation port. It is discharged from 5a to the outside of the box 1. Therefore, a common ventilation passage exists from the lower unit room to the upper unit room, and the convection due to the chimney effect is improved and the ventilation efficiency is improved, so that the temperature rise inside the functional unit 6 can be suppressed, and the common ventilation is provided. Compactness can also be achieved by the passage.

  The front and back duct chambers 9 and 18 used for wiring to or from the functional units 6 in each stage of the multi-stage unit chamber rows 20 and 21 are shared with the ventilation passage, so that the ventilation efficiency is improved. I can. The ventilation efficiency is improved by actively providing the ventilation passage, and the temperature rise in the functional unit 6 is suppressed. Since the front and back duct chambers 9 and 18 are arranged, for example, from the upper part to the lower part of the board, a convection effect due to the chimney effect can be expected.

  In addition, a plurality of multi-stage unit chamber rows 20 and 21 are arranged, and a common ventilation passage for each row is provided for each stage of functional units, and hot air from these ventilation passages is boxed from a common ventilation opening. Because it was discharged outside, it can also be used as a vent.

  Furthermore, the heat generated from the functional units 6 in the respective stages of the multistage unit chamber rows 20 and 21 is discharged from the ventilation port 7a of the busbar chamber cover 7 to the front and back duct chambers 9 and 18 serving as a common ventilation passage. Ascended and discharged from the vents 13a and 19a of the partition plates 13 and 19 to the horizontal bus chamber 11 to the horizontal bus chamber 11 located above, and discharged from the vent 5a of the horizontal bus chamber 11 to the outside of the box. The Therefore, both the heat from the functional unit 6 and the heat of the bus bar are discharged from the common ventilation passage to the outside of the box 1 and the ventilation port 5a of the horizontal bus bar room 11 from the front and back duct chambers 9 and 18. Ventilation passage with a large difference in height is made, ventilation efficiency is improved, and temperature rise in the functional unit 6 and the bus can be suppressed. Further, the functional units 6 at each stage can be cooled relatively uniformly.

Embodiment 2. FIG.
FIG. 3 shows a closed switchboard according to the second to fourth embodiments, in which (a) is a front view, (b) is a left side view of the front view (a), and (c) is a front view (a). FIG. FIG. 4 is a cross-sectional view of the closed switchboard according to the second to fourth embodiments, in which (a) is a cross-sectional view taken along line EE of FIG. 1 (a), and (b) is a cross-sectional view taken along line FF of FIG. Sectional drawing, (c) is a sectional view taken along line GG in FIG. In the drawings, the same reference numerals denote the same or corresponding parts, and the description thereof is omitted.

  In the description of the second embodiment, the description will focus on parts different from the first embodiment. In addition to the ventilation port 5a of the horizontal bus room 11, a ventilation port 4a is provided in the wiring chamber door 4 as a ventilation port to the outside of the box 1 {FIGS. 3 (a) and 4 (a)}. A central vent 7c and a side vent 7d are provided in the bus compartment cover 7 between the horizontal bus compartment 11 and the wiring compartment 14. Further, a side ventilation port 17 a is provided in the front duct chamber cover 17 between the horizontal bus bar chamber 11 and the wiring chamber 14. As a result, the heat flowing from the front and back duct chambers 9 and 18 through the ventilation openings 13a and 19a is discharged outside from the ventilation opening 5a of the horizontal bus room 11, and the central ventilation openings 7c and The air is discharged to the outside from the side vents 7d and 17a through the vent 4a of the wiring chamber door 4.

Embodiment 3 FIG.
As a ventilation port to the outside of the box 1, a ventilation port 3a may be provided in the front duct chamber door 3 {FIG. 3 (a)}. Then, in addition to being discharged to the outside through the ventilation port 4a of the wiring chamber door 4 in the second embodiment, it can be discharged to the outside from the ventilation port 3a of the front duct chamber door 3 on the front side. Further, the rear duct chamber door 3 may be provided with a ventilation port 3a. Then, in addition to being discharged to the outside from the ventilation port 5 a of the horizontal bus room 11, it can be discharged to the outside from the ventilation port 3 a of the back duct chamber door 3 in the horizontal bus room 11 on the back side.

Embodiment 4 FIG.
As a ventilation passage, in addition to or instead of the front duct chamber 9 and the back duct chamber 18, the vertical bus chamber 8 may be a common ventilation passage for the functional units 6 of each stage. For this purpose, a ventilation port 7b leading from the unit room of each stage to the vertical bus room 8 is provided in the bus room cover 7 between the unit room of each stage and the vertical bus room 8 {FIG. 4 (b)}. Then, the heat generated in the functional unit 6 at each stage is discharged from the ventilation port 7b of the bus room cover 7 to the vertical bus room 8 and rises to the upper horizontal bus room 11 communicating with the vertical bus room 8. It is discharged to the outside through the vent 5a. Note that the ventilation port 7b may be a latticed ventilation port so as not to touch the bus bar.

  According to the fourth embodiment, both the heat from the functional units 6 and the heat of the buses are discharged to the outside of the box 1 from the common ventilation passage (bus bar room), and from the vertical bus bar room 8 to the horizontal bus bar room 11. A ventilation passage with a large difference in height to the ventilation opening 5a is made, ventilation efficiency is improved, and temperature rises in the functional unit 6 and the bus can be suppressed. Further, the functional units 6 at each stage can be cooled relatively uniformly.

It is a figure which shows the closed switchboard which is Embodiment 1 of this invention. FIG. 2 is a cross-sectional view of the closed switchboard of the first embodiment. It is a figure which shows the closed switchboard which is Embodiment 2-4. It is sectional drawing of the closed switchboard of Embodiment 2-4. It is front sectional drawing which shows the conventional closed switchboard. It is the top view seen in the arrow direction along the HH line of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Box body 2 Unit room door 3 Duct room door 3a Ventilation opening 4 Wiring room door 4a Ventilation opening 5 Horizontal bus room door 5a Ventilation opening 6 Functional unit 7 Bus room cover 7a Ventilation opening 7b Ventilation opening

7d Side ventilation port 8 Vertical bus room 9 Front duct room 10 Vertical bus 11 Horizontal bus room 12 Horizontal bus 13 Partition plate 13a Ventilation port 14 Wiring room 15 Unit divider 16 Connecting conductor 17 Front duct chamber cover

17a Side ventilation port 17c Central ventilation port 18 Rear duct chamber 19 Partition plate 19a Ventilation port 20 Multistage unit chamber row 21 Multistage unit chamber row 22 Duct chamber enclosure plate 23 Enclosure plate

Claims (7)

In a closed switchboard having a multi-stage unit chamber row in which unit rooms in which functional units are stored are configured in multiple stages in the vertical direction,
The multi-stage unit chamber row is provided with a common ventilation passage for the functional units of each stage extending in the vertical direction along the multi-stage unit chamber row,
Heat generated from the functional units housed in the unit chambers of each stage of the multi-stage unit chamber row is discharged to the common ventilation passage and discharged from a ventilation port located above or above the ventilation passage. Closed switchboard characterized by being made to be.   A plurality of the multi-stage unit chamber rows are arranged, and the common ventilation passage is provided for each row of the functional units for each row, and heat from these ventilation passages is externally supplied from the common ventilation port. The closed switchboard according to claim 1, wherein the switchboard is discharged. In a closed switchboard having a multi-stage unit chamber row in which unit rooms in which functional units are stored are configured in multiple stages in the vertical direction,
The multi-stage unit chamber row is provided with a common duct chamber for the functional units of each stage extending in the vertical direction along the multi-stage unit chamber row with a partition plate interposed therebetween,
The duct chamber is provided with wiring of the functional unit,
In the duct chamber, heat generated from the functional units housed in the unit chambers of each stage of the multi-stage unit chamber row is exhausted from the ventilation port of the partition plate, and the ventilation located above or above the duct chamber. Closed switchboard characterized by being discharged from the mouth. Provided above the duct chamber is a bus room in which a bus connected to the functional unit is disposed,
In the duct chamber, heat generated from the functional units housed in the unit chambers of each stage of the multi-stage unit chamber row is exhausted from the ventilation port of the partition plate, and the bus bar chamber located above the duct chamber The closed switchboard according to claim 3, wherein the switchboard is discharged to the outside from the ventilation port.   The closed switchboard according to claim 1, wherein the ventilation passage is a vertical busbar room in which a busbar connected to the functional unit is disposed. In a closed switchboard having a multi-stage unit chamber row in which unit rooms in which functional units are stored are configured in multiple stages in the vertical direction,
The multistage unit chamber row is provided with a vertical busbar chamber in which a busbar extending in the vertical direction along the multistage unit chamber row with a partition plate interposed therebetween and connected to the functional unit is disposed.
Above the vertical bus room is provided a horizontal bus room in which a horizontal bus connected to the bus of the vertical bus room is disposed,
Heat generated from the functional units housed in the unit chambers of each stage of the multi-stage unit chamber row is exhausted from the ventilation port of the partition plate to the vertical bus chamber, and is positioned above the vertical bus chamber. A closed switchboard characterized by being discharged to the outside through a ventilation port of the horizontal bus room. In the multistage unit chamber row, a common duct chamber is provided for the functional units of each stage extending in the vertical direction along the multistage unit chamber row,
Heat generated from the functional units housed in the unit chambers of each stage of the multi-stage unit chamber row is discharged to the vertical bus chamber from the ventilation port of the partition plate, and is located above the vertical bus chamber. The exhaust from the ventilation hole of the horizontal bus room to the outside, the exhaust from the duct room, and the exhaust from the ventilation hole of the horizontal bus room located above the duct room. Closed switchboard.

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