JP5444513B2 - control panel - Google Patents

Description

  The present invention relates to a ventilation structure of a control panel that houses a high heat generating device such as an inverter.

  When the control panel is energized during operation, the stored busbars and equipment generate heat. Insulators and storage devices become short-lived or fail when the ambient temperature rises, so the interior of the control panel is ventilated and cooled in various ways to ensure stable operation and reliability. Ventilation cooling methods can be broadly divided into natural ventilation methods and forced ventilation methods using fans and air conditioners. The cooling capacity is higher in forced ventilation than in natural ventilation. Inexpensive.

  As a conventional control panel, there is one described in Patent Document 1 (Japanese Patent Laid-Open No. 6-165321), and a control center unit (for controlling a control center load side device such as a motor) for ventilation of a heat generating device. The control device group is configured as a unit of a unit), and a structure with an exhaust hood attached to the side plate of the unit is provided so that it is located above the heat generating device. When maintenance is required for equipment such as inverters, the exhaust outlet hood can be removed while the unit is stored in the panel, such as by removing the mounting screws, in a structure where the exhaust outlet hood is attached to the side plate of the unit. It is difficult, and it is necessary to remove the unit from the panel for equipment maintenance.

Moreover, as a conventional control panel, there is one described in Patent Document 2 (Japanese Patent Laid-Open No. 2009-194963), and a vent is provided in a plate that partitions the unit storage space and the wiring duct for ventilation of the control center unit. Although a structure for exhausting air to a ventilation duct that also serves as a wiring duct is provided, there is a problem that ventilation capacity is easily affected by the amount of wiring because the ventilation duct also serves as a wiring duct.
JP-A-6-165321 JP 2009-194963 A

  In the conventional control panel described above, in order to improve the ventilation performance, a ventilation fan is provided, or a vertical wiring duct formed at the time of manufacturing the casing of the control panel is used for the ventilation duct.

When a ventilation fan is used, there are problems that the number of parts is increased and the manufacturing cost is increased, the energy consumption is increased due to the use of the fan, and the maintenance cost is increased due to the limitation of the fan life.
In addition, when using a wiring duct formed at the time of manufacturing the cabinet of the control panel, the configuration of the cabinet is complicated, which increases the number of manufacturing steps and increases the manufacturing cost, and the cooling capacity decreases when there are many wires. There was a problem.

  The present invention has been made to solve the above-described problems, and an object thereof is to obtain a control panel that is easy to manufacture and has high cooling performance.

A control panel according to the present invention is a panel cabinet that forms a closed space with respect to the outside, has an exhaust port at the top, and has an opening accessible from the front to the inside and a door that opens and closes the front of the opening. A body unit having a base plate on the back and housing a heat-generating device, and a plurality of the device units are inserted from the opening to the back of the panel housing to a predetermined position with the base plate facing away from each other. A plurality of base plates are combined in a state where they are in abutment with each other in a plate surface extending direction of the base plate at a predetermined position in the panel housing by being mounted side by side in the vertical direction. communicating bulkhead, vertical air passage communicating with the exhaust port of through and said plate housing in the vertical direction of the Bankatamitai the rear side of the base plate, the front and rear of the partition wall for each of the equipment unit for partitioning the That vent, said is constructed by including at least an intake port provided on the door at the front position of each equipment unit.

According to the present invention, a panel housing having a closed space with respect to the outside , an exhaust port at the top, and an opening accessible from the front to the inside and a door for opening and closing the front of the opening, A device unit having a base plate on the back and housing a heat generating device, and a plurality of the device units are inserted from the opening portion toward the back of the panel housing with the base plate at the back, and vertically By mounting them side by side, the inside of the panel casing formed by combining the plurality of base plates in a state of abutting each other in the plate surface extending direction of the base plate at a predetermined position in the panel casing is divided in the front-rear direction. A partition wall, a vertical ventilation path that communicates in the vertical direction of the panel casing on the back side of the base plate and communicates with the exhaust port of the panel casing, and a communication path that communicates the front and rear of the partition wall for each device unit. Mouth, because of the structure comprises at least an intake port provided on the door at the front position of each equipment unit, there is an effect that can be produced is obtained easily with high cooling performance control panel.

It is a front view which shows an example of a structure of the unit of the control panel which concerns on Embodiment 1 of this invention. It is a figure which shows Embodiment 1 of this invention, and is sectional drawing which shows the cross section XX of FIG. It is a front view which shows an example of a structure of the housing | casing of a control panel and unit attachment plate which concern on Embodiment 1 of this invention. It is a front view which shows an example of the state which mounted | wore with the unit of FIG. 1 in the board in the control board which concerns on Embodiment 1 of this invention. It is a sectional side view which shows the structure of the cross section YY of FIG. 4 which concerns on Embodiment 1 of this invention. It is a figure which shows the example of the control panel which concerns on Embodiment 2 of this invention, and is sectional drawing equivalent to the YY cross section of FIG. It is a figure which shows the example of the control panel which concerns on Embodiment 2 of this invention, and is a cross-sectional top view equivalent to the cross section ZZ of FIG. It is a figure which shows the example of the control panel which concerns on Embodiment 2 of this invention, and is a horizontal sectional view equivalent to the WW section of FIG. It is a sectional side view which shows the example of the control panel which concerns on Embodiment 3 of this invention. It is a sectional side view which shows the example of the control panel which concerns on Embodiment 4 of this invention.

Embodiment 1 FIG.
A first embodiment of the present invention will be described below with reference to FIGS. FIG. 1 shows the configuration of a control panel unit according to Embodiment 1 of the present invention. The base plate 1 is provided with a unit mounting hole 6 for fixing the unit to the vent hole 4 and the panel housing 7. The exhaust lead-out hood 2 is attached to the base plate 1 so that it can be exhausted to the ventilation 4 and located on the heat generating device, and can be attached and detached from the front of the unit with a hood attachment screw 5.

  FIG. 2 is a side sectional view showing a section XX of FIG. 1. For example, the base plate is passed through the vent hole 4 by the exhaust lead-out hood 2 in which the heat of the inverter 3, which is a high heat generating device, is arranged on the upper part. It shows that it is the structure which can discharge | emit toward 1 rear part.

  FIG. 3 is a front view showing the mounting state of the panel casing 7 of the control panel and the unit mounting plate 8 mounted in the casing 7 with the door 13 described later open. Is provided with a unit fixing hole 9 and a unit mounting plate fixing hole 10, and is fixed to the panel casing 7 with screws passing through the unit mounting plate fixing hole 10. Here, the mounting surface of the unit unit 11 of the unit mounting plate 8 viewed from the front of the control panel is defined as “a predetermined position in the panel housing” viewed from the front of the control panel.

FIG. 4 shows a state in which the device units 11 shown in FIG. 1 are mounted in three horizontal rows and two upper and lower rows on the unit mounting plate 8 inside the panel casing 7 of the control panel with the door 13 described later open. It is a front view. Each device unit 11 is attached to the unit mounting plate 8 through the plurality of unit mounting holes 6 provided in the unit mounting plate 8, so that the unit units 11 are in abutment with each other in the plate surface extending direction of the base plate 1. By combining them, a partition wall 18 is formed across the entire height between the two steps of the device unit 11 and the left and right sides of the panel housing 7, and the base plate 1 of the device unit 11 is located behind the unit mounting plate 8. A space that is surrounded by the side surface and the rear surface of the panel housing 7 and communicates in the vertical direction (that is, the vertical ventilation path 20) is formed.
The door 13 and the like for forming the closed space 19 and the outside of the panel housing 7 will be described with reference to FIGS. 5 and 6.

FIG. 5 is a side sectional view showing a YY section of FIG. FIG. 4 shows a state in which the device units 11 are mounted in two stages only on the front side of the unit mounting plate 8 provided substantially at the center when viewed in the depth direction of the panel casing 7. In this case, since only one side of the front and rear direction of the control panel is used, it is referred to as a single-sided control panel.
In this single-sided control panel, in order to provide a closed space 19 to the outside of the panel casing 7, a door 13 having a ventilation fan 15 communicating with the front surface of the door at the top is attached to the front side of the panel. In FIG. 5, the door 13 is vertically divided into three so that each door 13 can be opened and closed independently. The uppermost door 13 opens and closes the front surface of the panel casing 7 in the upper part from the vicinity of the upper end of the base plate of the upper device unit 11. The middle and lower doors 13 each have a divided portion near the front surface near the boundary between the upper and lower two-stage device units 11, and open and close the front surface (that is, the opening 22) of the panel casing 7.

Further, a back cover 12 is attached to the back side of the control panel, and the entire rear portion of the panel casing 7 is closed from the upper end to the lower end of the panel casing 7 in FIG.
In FIG. 5, at a substantially central portion in the depth direction of the panel casing 7, there are upper, middle, and lower three levels spaced apart in the vertical direction of the panel casing 7 and the left and right sides of the panel casing 7 (the depth of the paper in FIG. 5). The device unit 11 and the base plate 1 are mounted on the unit mounting plate 8 arranged in the direction). The upper unit unit 11 is mounted between the upper stage and the middle stage of the unit mounting plate 8 and the lower unit unit 11 is mounted between the middle stage and the lower stage of the unit mounting plate 8. A partition wall 18 is formed by the base plate 1 on the side, and the base plate 1 partitions the space in the panel housing 7 in the front-rear direction of the control panel. A vertical duct-like space (that is, a vertical air passage 20) communicating with the vertical direction of the panel casing 7 is formed by the partition walls 18 formed by the plurality of base plates 1, both side walls of the panel casing, and the back cover 12. doing.

  The door 13 has an air inlet 14 that opens toward the front surface of the control panel for intake air at the lower front position of each device unit 11, and the air taken in from the air inlet 14 is warmed by the inverter 3. The exhaust vent hood 2 of the equipment unit 11 communicates the vent 4 of the base plate 1 and is discharged by the base plate 1 to a vertically communicating space formed on the rear side of the control panel. It moves upward by the chimney effect of this vertically communicating space (that is, the vertical ventilation path 20), and is then exhausted out of the control panel through the exhaust port 17 formed in the door 13 by the ventilation fan 15.

As described above, in the invention of the first embodiment, the base plate 1 of the device unit 11 is arranged side by side on the unit mounting plate 8 in the panel casing 7 to form the partition wall 18 in the panel casing 7. The vertical ventilation path 20 can be easily formed.
In addition, by adopting a single-sided configuration, a thin control panel with high cooling performance can be easily manufactured by a front operation method.

Embodiment 2. FIG.
A second embodiment of the present invention will be described with reference to FIGS. 6 is a side cross-sectional view showing the YY cross section of FIG. 4 as in the first embodiment. In FIG. 6, openings are provided on the front and rear surfaces of the panel casing 7, and the door 13 opens and closes the openings on the front and rear surfaces of the panel casing 7. The point that the door 13 is divided into upper, middle, and lower three stages is the same as in the first embodiment. In the first embodiment, the device unit 11 is mounted in two stages only on the front side of the unit mounting plate 8 provided substantially in the center when viewed in the depth direction of the panel casing 7, and only one side of the front and rear direction of the control panel is used. In contrast to the control panel, the control panel according to the second embodiment is such that the device unit 11 is mounted from both the front and rear sides of the control panel through the opening 22 of the panel housing 7, and the double-sided control panel. Called.

In the double-sided control panel of FIG. 6, in order to provide a closed space with respect to the outside of the panel casing 7, upper doors 13 provided with ventilation fans 15 communicating with the outside of the doors 13 are attached to the front and back sides of the panel. Yes. The unit mounting plates 8 are arranged in two rows with respect to the vertical direction at a predetermined distance in the front-rear direction at a substantially central position in the front-rear direction of the panel casing 7 and at a predetermined interval in the vertical direction of the panel casing 7. The upper, middle, and lower stages are further arranged in a state of straddling the left and right sides of the board casing 7 in both directions (the board width direction). Since the base plate 1 of the device unit 11 mounted in the panel casing 7 from the front side and the back side of the control panel partitions the space in the panel casing 7 in the front-rear direction of the control panel, the panel casing A chimney-shaped closed space 19 (that is, a vertical ventilation path 20) that communicates with a ventilation fan 15 that is disposed at an upper portion of the control panel and exhausts through an exhaust port 17 formed in the upper door 13 at a substantially central portion in the depth direction of the body 7. Is configured.
The device unit 11 mounting surface on the front side and the device unit 1 mounting surface on the rear side of the unit mounting plate 8 are defined as “predetermined positions in the panel housing” as viewed from the front of the control panel.
The door 13 covering the front surface of the lower part of each device unit 11 (the rear surface in the case of the rear unit of the control panel) is provided with an intake port 14 for intake air, and the intake ports 14 on the front and rear surfaces of the control panel are provided. The air sucked from the air is warmed by the inverter 3 which is a high heat generating device, and communicates with the vent hole 4 of the base plate 1 from the exhaust outlet hood 2 of each device unit 11 in the upper and lower stages, The ventilating fan is exhausted to a “chimney-shaped closed space” (that is, the vertical ventilation path 20), moves upward of the control panel due to the chimney effect, and then passes through an exhaust port 17 formed on the surface of the door 13. 15 is exhausted outside the control panel.

FIG. 7 is a cross-sectional plan view showing a cross section ZZ of FIG. 4 and a horizontal cross section of the panel casing 7 of the double-sided control panel, and the sections disposed on both sides of the panel casing 7 are U-shaped. The shape and arrangement of the column 21 are shown.
In the figure, the panel casing 7 is arranged so that the pillars 21 having a U-shaped cross-section are vertically symmetrical with respect to the approximate center of the control panel in the longitudinal direction and symmetrical with respect to the center line in the horizontal direction of the panel. It arrange | positions with the length which connects the frame part of an end. A unit mounting plate fixing hole 10 for mounting the unit mounting plate 8 is provided in the column 21 having a U-shaped cross section. In the case of the double-sided shape shown in FIG. 8, the U-shape is designed to attach the unit mounting plate 8 to the front and rear surfaces of the U-shaped support column 21 from the front and rear of the control panel, and is limited to one side. In this case, it may be L-shaped or flat. Further, the position of the U-shaped column 21 in the front-rear direction does not necessarily coincide with the approximate center of the panel casing 7 in the front-rear direction, and depends on the size of the control panel of the device unit 11 in the depth direction. Alternatively, the control panel may be appropriately shifted in the front-rear direction from the substantially central portion of the control panel.

  FIG. 8 is a horizontal sectional view showing the WW cross section of FIG. 4 in the case of a double-sided control panel. The panel housing 7 is provided on both ends of the unit mounting plate 8 from the front and back sides of the control panel. A state in which the unit mounting plate 8 is fixed to the front and rear surfaces of the column 21 of the U-shaped cross section of the panel housing 7 by screws (not shown) using the unit mounting plate fixing hole 10 is shown. The unit mounting plate 8 is mounted so that the base plate 1 of the device unit 11 is sandwiched from the front and rear of the control panel. This attachment is fixed to the unit attachment plate 8 with a screw penetrating between the unit attachment hole 6 provided in the base plate 1 and the unit fixation hole 9 provided in the unit attachment plate 8. In this way, by arranging a plurality of the device units 11 in the vertical and horizontal directions, a space communicated in the vertical direction of the panel casing 7 in the middle of the depth direction of the control panel by the plurality of base plates 1. Configure. This space is a vertical ventilation path, and the air warmed by the inverter 3 is exhausted here, and the warmed air rises due to the chimney effect of the space communicating vertically, and then passes through the ventilation fan 15 to the control panel. Exhausted outside.

As described above, in the invention of the second embodiment, the base plates 1 of the equipment unit 11 are arranged in two rows in the vertical direction on the unit mounting plate 8 in the panel casing 7 from the front-rear direction of the control panel. Thus, a partition wall can be formed in the panel housing 7, and an air passage can be easily formed.
Further, by adopting a double-sided configuration, a thin control panel with high storage efficiency of the control device and high cooling performance can be easily manufactured.

Embodiment 3 FIG.
FIG. 9 shows a configuration in which a ventilation fan 15 for exhausting air further upward is provided to the configuration of FIG. When the heat generation amount of the heat generating device (inverter 3 or the like) is large, a configuration is shown in which ventilation is possible not only in the front-rear direction of the control panel but also upward of the control panel. Further, when there is a restriction in the direction of exhaust, it may be selectively discharged toward the front-rear direction of the panel or upward.
By adopting such a configuration, it is possible to obtain a control panel having an improved heat dissipation effect without complicating the configuration.

Embodiment 4 FIG.
FIG. 10 shows a configuration in which an exhaust port 17 having only an opening is provided instead of the ventilation fan 15 of FIG. When the heat generation amount of the heat generating device (inverter 3 or the like) is small, it is possible to economically ventilate by providing the exhaust port 17 without using the ventilation fan 15.
With such a configuration, it is possible to obtain a control panel with an improved heat dissipation effect with a simple configuration with high energy and resource saving effects without complicating the configuration.

In the above description, the control panel in which the inverter is housed has been mainly described. However, it goes without saying that the present invention can be used even in a control panel in which power electronics equipment generating a large amount of heat other than the inverter is housed.
In addition to the control panel that controls the operation of normal equipment, the control panel described above can also be applied to the so-called switchgear that controls the opening and closing of power, and the invention can be used as a control panel in a broad sense. .
In the present invention, it is needless to say that each embodiment can be appropriately modified and omitted within the scope of the invention.
In addition, in each figure of FIGS. 1-10, the same code | symbol shows the same or equivalent part.

1 base plate,
2 exhaust hood,
3 Inverter (high heat generation equipment),
4 Vents,
5 Hood mounting screw,
6 Unit mounting hole,
7 panel chassis,
8 Unit mounting plate,
9 Unit fixing hole,
10 Unit mounting plate fixing hole,
11 units,
12 Back cover,
13 Door,
14 Inlet,
15 Ventilation fan (exhaust fan),
16 Air flow,
17 Exhaust port,
18 Bulkhead,
19 enclosed space,
20 Vertical ventilation path,
21 struts,
22 opening.

Claims (6)

A panel housing with a closed space with the outside and an exhaust port at the top, an opening accessible from the front, and a door that opens and closes the front of the opening, and a base plate on the back A device unit containing a heat generating device, and a plurality of the device units are inserted from the opening portion toward the back of the panel housing to a predetermined position with the base plate on the back side and mounted side by side in the vertical direction. A partition wall that divides the inside of the panel casing in the front-rear direction, which is formed by combining the plurality of base plates in a state of abutting each other in a plate surface extending direction of the base plate at a predetermined position in the panel casing; vertical air passage communicating with the exhaust port at the back of the Bankatamitai in side vertically through and the plate housing, the vent communicating the front and rear of the partition wall for each of the equipment units, the respective devices Yoo Control board, characterized by being configured with at least an intake port provided on the door at the front position of Tsu and. An exhaust port in the upper to form a closed space to the outside, and with the front portion and rear portion and the interior accessible opening the door for opening and closing the opening front Bankatamitai, base on the back over scan plate accommodated equipment units the heating device has, inserted vertically from each other a plurality of said equipment units to said base plate to the rear side to a predetermined position toward the back of the panel housing through the opening By mounting them side by side, the inside of the board casing formed by combining the plurality of base plates in a state of butting each other in the plate surface extending direction of the base board at a predetermined position in the board casing is partitioned in the front-rear direction. partition wall, vertical air passage to the communicating with the outlet of the vertical direction through and the panel housing of the Bankatamitai formed in the rear side of the base plate, the vent which communicates the front and rear of the partition wall for each of the equipment unit , Control panel, characterized by being configured with at least an intake port provided on the door at the front position of each equipment unit. Control panel according to claim 1 or claim 2, wherein said providing the vent to the base plate of the equipment unit. The control panel according to claim 3, wherein an exhaust outlet hood that communicates with the vent is provided on an upper portion of the heat generating device of the device unit. Forward or backward or longitudinal directions or control panel according to claim 1 or claim 2 characterized in that it has an opening at the top, the outlet of the upper portion of the Bankatamitai is the Bankatamitai. Control panel according to claim 5, characterized in that an exhaust fan installed in the exhaust port of the top of the Bankatamitai.

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