JP5452787B1 - Control box - Google Patents

Abstract

  The control box 1 is a control box in which an armor window 4 for ventilation is provided on the side surface of a box 8 that houses the power control device 2 and the heater 3. The armor window 4 has a plate member 7 whose upper end is rotatably attached to the side surface of the box body 8 and can open and close the ventilation port 20 provided on the side surface, and a holding member that normally holds the plate member 7 in an open state. The plate member 7 is in a closed state when receiving a certain level of wind force from the outside of the box 8. The holding member is, for example, a spring 9. Thereby, the weather resistance of the electric power control apparatus can be improved.

Description

  The present invention relates to a control box that houses a power control device, and more particularly, to a control box that includes an armor window for ventilation.

  Control devices for switching devices such as gas circuit breakers are usually housed in a control box together with a heater. This heater is used for the purpose of ventilation, prevention of condensation and temperature control. In addition, the control box is provided with an armor window, and ventilation by natural convection is always performed. The armor window is designed to prevent rain from entering the control box.

  Patent Document 1 describes a heat exhaust device provided in a device having a heat generating part and a blower in a box, in which an opening / closing member is provided in a discharge hole formed in the box. The opening / closing member is opened by the wind pressure when the blower is operating, and is closed by its own weight when the blower is stopped.

Japanese Patent Publication No.8-24224

  However, the armor window provided in the conventional control box is normally open, and in the case of a storm such as a typhoon, rainwater may enter the control box through the armor window.

  Even when rainwater does not enter, the wind in the armor window blows when the wind is strong, increasing the humidity in the control box and causing condensation, which may adversely affect the control equipment.

  This invention is made | formed in view of the above, Comprising: It aims at providing the control box which can improve the weather resistance of the control apparatus for electric power.

  In order to solve the above-described problems and achieve the object, a control box according to the present invention is a control box in which a ventilation armor window is provided on a side surface of a box housing a power control device, The armor window includes a plate member whose upper end portion is rotatably attached to the side surface of the box body and capable of opening and closing a ventilation port provided on the side surface, and a holding member that normally holds the plate member in an open state. And the plate member is in a closed state when receiving a certain level of wind force from the outside of the box.

  According to the present invention, it is possible to improve the weather resistance of the power control device.

FIG. 1 is a cross-sectional view illustrating a configuration of a control box according to the first embodiment. FIG. 2 is an enlarged cross-sectional view of the armor window of the first embodiment at a normal time. FIG. 3 is an enlarged cross-sectional view of the armor window of the first embodiment when the wind is strong. FIG. 4 is an enlarged cross-sectional view of the armor window of the second embodiment. FIG. 5 is an enlarged cross-sectional view of the armor window of the third embodiment. FIG. 6 is an enlarged cross-sectional view of the armor window of the fourth embodiment. FIG. 7 is an enlarged cross-sectional view of a conventional armor window.

  Below, the control box which concerns on embodiment of this invention is demonstrated in detail based on drawing. Note that the present invention is not limited to the embodiments.

Embodiment 1 FIG.
FIG. 1 is a cross-sectional view showing a configuration of a control box according to the present embodiment. FIG. 2 is an enlarged cross-sectional view of the armor window of the present embodiment at normal time. FIG. 3 is an enlarged cross-sectional view of the armor window of the present embodiment when the wind is strong.

  As shown in FIG. 1, the control box 1 includes a box 8, an armor window 4 provided on a side surface of the box 8, and a filter 6 that covers the armor window 4 from the inside of the box 8.

  The control box 1 accommodates the power control device 2. The power control device 2 is a control device for controlling a switch (not shown) such as a gas circuit breaker. The control box 1 is installed outdoors, for example.

  A heater 3 is provided in the control box 1. The heater 3 is used for the purpose of ventilation, prevention of condensation and temperature control, and is always driven. The control box 1 is ventilated by natural convection by the heater 3 and an armor window 4. Note that a heater may not be provided in the control box 1.

  The filter 6 is provided for the purpose of preventing insects and the like, and has a structure in which insects and the like do not enter the box 8 from the armor window 4.

  As shown in FIG. 2, for example, a plurality of armor windows 4 are provided for each ventilation port 20 provided on the side surface of the box 8 and are arranged in the vertical direction. Moreover, the armor window 4 is provided with the board | plate material 7 by which the upper end part was supported rotatably. The plate member 7 is disposed outside the box 8. The plate material 7 is formed of, for example, a metal material whose surface is coated with a paint. The ventilation port 20 is horizontally long, for example, and the plate member 7 is also long horizontally so that the ventilation port 20 can be closed. The upper end portion of the plate member 7 is rotatably attached to the side surface of the box 8 by, for example, a hinge 5. Specifically, the hinge 5 is comprised by the board | plate material 17 fixed on the box 8, the board | plate material 7, and the hinge axis | shaft which connects these. The plate member 7 may be rotatably supported by a structure other than the hinge 5.

  Further, in the present embodiment, a spring 9 is provided between the plate member 7 and the box 8 with one end attached to the inner lower end of the plate 7 and the other end attached to the side surface of the box 8. . The spring 9 is, for example, a coil spring, and specifically a compression spring.

  The plate member 7 is normally opened by the repulsive force of the spring 9. That is, in normal times, the plate member 7 is inclined with respect to the side surface of the box body 8, and the opening between the plate member 7 and the side surface of the box body 8 communicates with the ventilation port 20, so that the inside of the box body 8 can be ventilated. It is in a state.

  However, as shown in FIG. 3, when the plate member 7 receives a certain amount of wind force W from the outside of the box body 8, the spring 9 is pushed by the plate member 7 receiving the wind force to reduce it to the maximum, and the plate member 7 is closed. Then, the ventilation port 20 is closed. Thereby, the box 8 is almost sealed. Further, when the wind force weakens, the plate material 7 is inclined and opened again by the repulsive force of the spring 9, and ventilation in the box 8 becomes possible.

  The natural convection of air by the heater 3 does not affect the opening and closing of the plate material 7.

  Moreover, it is preferable that the lower end part of the board | plate material 7 is return | folded by the box body 8 side, and is made into a substantially L-shaped shape like FIG. In the figure, a portion of the lower end portion of the plate member 7 that is folded back toward the box body 8 is indicated by a folded portion 7a. Even when the spring 9 is pushed to the maximum by the plate 7 that has received the wind force, a gap is formed between the lower end of the plate 7 and the side surface of the box 8 by the minimum length of the spring 9. As described above, the folded portion 7a can close the gap by folding the lower end portion of the plate member 7 in an L shape toward the box 8 side. The folded portion 7a can prevent rain and wind from entering from below through the gap. In addition, the folding | returning part 7a can also be formed by bend | folding the lower end part of the board | plate material 7, and may join and form an applicable site | part to the lower end part of the board | plate material 7 by welding.

  As described above, the present embodiment has a structure in which the plate member 7 of the armor window 4 can be opened and closed, and ventilation by natural convection in the control box 1 is possible with the plate member 7 open at all times. When a certain amount of wind power 7 is received from the outside of the control box 1, the plate member 7 is closed and the inside of the control box 1 is sealed.

  As a result, it is possible to realize a structure in which the armor window 4 is closed in bad weather such as strong winds, storms, typhoons, etc., preventing rainwater from entering and increasing the humidity, protecting the power control device 2 in the control box 1 and weather resistance. Can be improved.

  Here, the structure of a conventional armor window will be described. FIG. 7 is an enlarged cross-sectional view of a conventional armor window. In FIG. 7, the same components as those in FIG. 2 are denoted by the same reference numerals. As shown in FIG. 7, the armor window 40 includes a gutter 50 having a structure that prevents rain from entering. However, when a storm such as a typhoon occurs, rainwater may enter the box 8 through the opening of the eaves 50. When rainwater enters the box 8 and reaches the power control device 2, the power control device 2 may break down. Even when rainwater does not enter, the wind in the wind 50 blows when the wind is strong, so that the humidity in the box 8 increases and condensation occurs, which may adversely affect the power control device 2.

  Moreover, in patent document 1, although the structure which opens and closes a discharge hole by an opening / closing member is described, this opening / closing member opens by the wind pressure when the air blower in a box operates, and ventilates by the forced convection by an air blower. Therefore, the configuration is different from the present embodiment.

Embodiment 2. FIG.
FIG. 4 is an enlarged cross-sectional view of the armor window of the present embodiment, and particularly shows a normal state. In FIG. 4, the same components as those in FIG. 2 are denoted by the same reference numerals. The configuration of the control box is the same as in FIG. Below, it demonstrates centering on difference with Embodiment 1. FIG.

  As shown in FIG. 4, in the present embodiment, a permanent magnet 10 a is provided on the inner lower end of the plate member 7, and a permanent magnet 10 b is provided on the side surface of the box 8. The permanent magnets 10a and 10b are disposed at positions facing each other with the plate member 7 closed, and are disposed so that the same poles face each other.

  The plate member 7 is normally open by the repulsive force between the permanent magnets 10a and 10b. That is, in normal times, the plate member 7 is inclined with respect to the side surface of the box body 8, and the opening between the plate member 7 and the side surface of the box body 8 communicates with the ventilation port 20, so that the inside of the box body 8 can be ventilated. It is in a state.

  However, when the plate member 7 receives a certain amount of wind force from the outside of the box 8, the plate member 7 receiving the wind force closes against the repulsive force, thereby closing the ventilation opening 20. Thereby, the box 8 is almost sealed. In addition, when the wind force is weakened, the plate material 7 is inclined and opened again by the repulsive force between the permanent magnets 10a and 10b, and the inside of the box 8 can be ventilated.

  Similarly to the first embodiment, the lower end portion of the plate member 7 is bent toward the box body 8 to have a substantially L-shaped shape. This is because the plate material 7 is not completely closed due to the thickness and repulsive force of the permanent magnets 10a and 10b, and a gap is formed between the lower end portion of the plate material 7 and the side surface of the box 8, so that a folded portion 7a is provided. This is to close the gap and prevent rain wind from entering through the gap from below.

  As described above, the present embodiment has a structure in which the plate member 7 of the armor window 4 can be opened and closed, and ventilation by natural convection in the control box 1 is possible with the plate member 7 open at all times. When a certain amount of wind power 7 is received from the outside of the control box 1, the plate member 7 is closed and the inside of the control box 1 is sealed.

  As a result, it is possible to realize a structure in which the armor window 4 is closed in bad weather such as strong winds, storms, typhoons, etc., preventing rainwater from entering and increasing the humidity, protecting the power control device 2 in the control box 1 and weather resistance. Can be improved. Other configurations, operations, and effects of the present embodiment are the same as those of the first embodiment.

Embodiment 3 FIG.
FIG. 5 is an enlarged cross-sectional view of the armor window of the present embodiment, and particularly shows a normal state. In FIG. 5, the same components as those in FIG. 2 are denoted by the same reference numerals. The configuration of the control box is the same as in FIG. Below, it demonstrates centering on difference with Embodiment 1. FIG.

  As shown in FIG. 5, in the present embodiment, a plate material 7b as a balance member is integrally provided at the upper end portion of the plate material 7, and the plate material 7 and the plate material 7b form a substantially L-shape. Specifically, the plate member 7 b extends substantially vertically from the upper end of the plate member 7 to the inside of the box 8. That is, the plate member 7 is disposed outside the box body 8, whereas the plate member 7 is disposed inside the box body 8. The plate material 7 b is formed of, for example, the same material as the plate material 7 and has the same thickness, but the width is smaller than that of the plate material 7. The plate material 7 and the plate material 7b are rotatably attached to the side surface of the box body 8 by a hinge 5, for example. Further, similarly to the first and second embodiments, a folded portion 7 a is provided at the lower end portion of the plate material 7.

  The plate member 7 provided with the folded portion 7a is normally in an open state by balancing with the plate member 7b. That is, in normal times, the gravity torque around the rotation center acting on the plate material 7 provided with the folded portion 7a balances the gravity torque around the rotation center acting on the plate material 7b, so that the plate material 7 opens at a predetermined angle. The weight and width of the plate material 7 are adjusted so as to be in a state. Here, the center of rotation is the hinge shaft of the hinge 5. Thereby, normally, the board | plate material 7 inclines with respect to the side surface of the box body 8, the opening between the board | plate material 7 and the side surface of the box body 8, and the ventilation opening 20 communicate, and the ventilation in the box body 8 is possible. It is in a state.

  However, when the plate member 7 receives a certain amount of wind force from the outside of the box body 8, the plate member 7 that has received the wind force closes and closes the ventilation port 20. Thereby, the box 8 is almost sealed. Further, when the wind force weakens, the plate material 7 is inclined and opened again due to the balance of the gravitational torque, and the inside of the box 8 can be ventilated. In particular, when the wind power becomes zero, the plate material 7 returns to the original balance position, and the inclination angle of the plate material 7 is maximized.

  In the present embodiment, unlike the first and second embodiments, the ventilation opening 20 can be closed without a gap when the plate 7 receives a certain amount of wind force. However, in a situation where the wind force is slightly weaker than the above-mentioned constant value and the ventilation opening 20 is not completely blocked by the plate member 7, rain wind may enter from the lower side through the gap. Is preferable.

  As described above, the present embodiment has a structure in which the plate member 7 of the armor window 4 can be opened and closed, and ventilation by natural convection in the control box 1 is possible with the plate member 7 open at all times. When a certain amount of wind power 7 is received from the outside of the control box 1, the plate member 7 is closed and the inside of the control box 1 is sealed.

  As a result, it is possible to realize a structure in which the armor window 4 is closed in bad weather such as strong winds, storms, typhoons, etc., preventing rainwater from entering and increasing the humidity, protecting the power control device 2 in the control box 1 and weather resistance. Can be improved. Other configurations, operations, and effects of the present embodiment are the same as those of the first and second embodiments.

Embodiment 4 FIG.
FIG. 6 is an enlarged cross-sectional view of the armor window of the present embodiment, and particularly shows a normal state. In FIG. 6, the same components as those in FIG. 2 are denoted by the same reference numerals. The configuration of the control box is the same as in FIG. Below, it demonstrates centering on difference with Embodiment 1. FIG.

  As shown in FIG. 6, in the present embodiment, a pair of rods 13 a and 13 b that can be bent and stretched by a hinge 12 is attached between the plate member 7 and the side surface of the box body 8. That is, one end of the rod 13a is attached to the inner lower end of the plate member 7, one end of the rod 13b is attached to the side surface of the box 8, and the other end of the rod 13a and the other end of the rod 13b can bend and stretch to the hinge 12. It is connected. Further, similarly to the first and second embodiments, a folded portion 7 a is provided at the lower end portion of the plate material 7.

  In the normal state, the plate 7 is in an open state in which the rods 13a and 13b form an obtuse angle with respect to the hinge axis. The hinge 12 is made of a material that is heavier than the rods 13a and 13b. When the plate 7 is not subjected to wind force, the rods 13a and 13b open due to the gravity of the hinge 12. Thereby, normally, the board | plate material 7 inclines with respect to the side surface of the box body 8, the opening between the board | plate material 7 and the side surface of the box body 8, and the ventilation opening 20 communicate, and the ventilation in the box body 8 is possible. It is in a state.

  However, when the plate member 7 receives a certain amount of wind force from the outside of the box 8, the plate member 7 receiving the wind force folds the rods 13 a and 13 b, and the plate member 7 is closed, thereby closing the ventilation port 20. Thereby, the box 8 is almost sealed. In the state where the rods 13 a and 13 b are folded, the rods 13 a and 13 b are disposed below the hinge 12. Further, when the wind force is weakened, the rods 13a and 13b open to each other around the hinge axis due to the gravity of the hinge 12, so that the plate material 7 is inclined again to allow the inside of the box 8 to be ventilated.

  As described above, the present embodiment has a structure in which the plate member 7 of the armor window 4 can be opened and closed, and ventilation by natural convection in the control box 1 is possible with the plate member 7 open at all times. When a certain amount of wind power 7 is received from the outside of the control box 1, the plate member 7 is closed and the inside of the control box 1 is sealed.

  As a result, it is possible to realize a structure in which the armor window 4 is closed in bad weather such as strong winds, storms, typhoons, etc., preventing rainwater from entering and increasing the humidity, protecting the power control device 2 in the control box 1 and weather resistance. Can be improved. Other configurations, operations, and effects of the present embodiment are the same as those of the first to third embodiments.

  The control box according to the present invention is more generally a control box in which an armor window for ventilation is provided on the side surface of a box that houses a power control device, and the upper end of the armor window is the box. A plate member rotatably attached to a side surface of the body and capable of opening and closing a ventilation port provided on the side surface; and a holding member that normally holds the plate member in an open state. When a certain level of wind force is received from the outside, the closed state can be established. The holding member is the spring 9 in the first embodiment, the permanent magnets 10a and 10b in the second embodiment, the balance member (plate material 7b) in the third embodiment, and the rod 13a in the fourth embodiment. 13b and hinge 12, but others may be used.

  As described above, the present invention is useful as a control box that houses control devices for switching devices such as gas circuit breakers.

  DESCRIPTION OF SYMBOLS 1 Control box, 2 Electric power control apparatus, 3 Heater, 4,40 Armor window, 5,12 Hinge, 6 Filter, 7, 7b Plate material, 7a Folding part, 8 Box body, 9 Spring, 10a, 10b Permanent magnet, 13a , 13b Rod, 17 Plate, 20 Ventilation port, 50 mm.

Claims (4)

A control box provided with an armor window for ventilation on the side surface of the box housing the power control device,
The armor window has a plate member whose upper end portion is rotatably attached to a side surface of the box body and capable of opening and closing a ventilation port provided on the side surface, and a holding member that normally holds the plate member in an open state. With
The plate, upon receiving a certain level of wind power from the outside of the box body, Ri Do closed,
The holding member is a second permanent magnet provided at an inner lower end of the plate member and a second permanent magnet provided on a side surface of the box so that the same polarity as the first permanent magnet faces each other. A control box comprising a permanent magnet . A control box provided with an armor window for ventilation on the side surface of the box housing the power control device,
The armor window has a plate member whose upper end portion is rotatably attached to a side surface of the box body and capable of opening and closing a ventilation port provided on the side surface, and a holding member that normally holds the plate member in an open state. With
When the plate material receives a certain amount of wind force from the outside of the box, it is in a closed state,
The holding member is composed of a pair of rods connected to be able to bend and stretch by a hinge,
One of the pair of rods is attached to an inner lower end portion of the plate member, and the other of the pair of rods is attached to a side surface of the box. 3. The control box according to claim 1, wherein a lower end portion of the plate member is folded in an L shape on the box side. Control box according to any one of claims 1 to 3, characterized in that the heater is provided in the control box inside.

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