JP2021128968A - Ventilator for electrical apparatus housing cabinet - Google Patents

Abstract

To provide a ventilator for an electrical apparatus housing cabinet, capable of bringing a filter into close contact with a case part without using a filter with a packing.SOLUTION: A ventilator for an electrical apparatus housing cabinet includes a case 3 in which a filter housing part 34 opening on the front side extends to the back side, and an adapter 61 covering the top and side part of a peripheral edge part of the filter housing part on the front side of the case.SELECTED DRAWING: Figure 2

Description

The present invention relates to a ventilation device for an electric device storage cabinet.

As described in Patent Document 1, the electric equipment storage cabinet is provided with a ventilation device for releasing the heat generated by the equipment or the like stored inside to the outside. The ventilation device of Patent Document 1 discloses a technique for improving the dustproof performance by arranging a packing member on the peripheral edge of the filter and bringing the filter into close contact with the case in order to secure higher dustproof performance.

JP-A-2017-166707

By the way, since the filter and the packing member are integrated, when the filter is replaced in maintenance, the packing on the peripheral edge is also replaced at the same time, which increases the cost. Further, since the structure is such that the packing member on the periphery of the filter is brought into close contact with the case, it becomes difficult to replace the filter from the inside of the cabinet.

The inventor of this case tried to solve this problem by diligently examining this point. An object to be solved by the present invention is to provide a ventilation device for an electric device storage cabinet in which the filter can be brought into close contact with the case portion without using a filter provided with packing.

In order to solve the above problems, electricity is provided with a case in which the filter storage portion that opens on the front side extends to the back side, and an adapter that covers the upper portion and the side portion of the peripheral portion of the filter storage portion on the front side of the case. Ventilation device for equipment storage cabinet.

Further, it is preferable that the adapter is mounted so as to provide a drainable gap at the lower part of the filter storage portion.

Further, it is preferable that the movement restricting unit used for restricting the movement of the adapter with respect to the case is provided in the lower part of the adapter.

According to the present invention, it is possible to provide a ventilation device for an electric device storage cabinet in which the filter can be brought into close contact with the case portion without using a filter provided with packing.

It is a perspective view which shows a part of the electric equipment storage cabinet which attached the ventilation system (louver) of embodiment. It is an exploded perspective view of the electric equipment storage cabinet and the louver shown in FIG. It is an exploded perspective view of the electric equipment storage cabinet and the louver seen from the direction different from FIG. It is an exploded perspective view of the louver which separated the louver part. It is a perspective view of the case seen from the front side. It is a perspective view of the case seen from the back side. FIG. 1 is a cross-sectional view taken along the line VII-VII of FIG. It is a figure which shows the state which attached the adapter to the case. It is an exploded perspective view which disassembled the louver part into a main body louver member and a sub louver member. FIG. 5 is a cross-sectional view taken along the line XX of FIG. It is an end view of XI-XI of FIG. It is a cross-sectional view of XII-XII of FIG. It is an exploded perspective view which shows the state which the main body louver member was removed from the louver attached to the electric equipment storage cabinet.

A mode for carrying out the invention is shown below. As can be understood from FIGS. 1 to 4, the ventilation device of the present embodiment is a louver 1 for an electric device storage cabinet, and a filter storage portion 34 having an opening on the front side extends to the back side. The case 3 is provided, and an adapter 61 that covers the upper portion and the side portion of the peripheral edge portion of the filter accommodating portion 34 on the front side of the case 3. Therefore, it is possible to make a ventilation device that can bring the filter 4 into close contact with the case 3 without using a filter provided with packing.

The case 3 of the embodiment houses the filter 4, and includes a filter storage portion 34 having a U-shaped cross section. As can be understood from FIGS. 5 and 6, the filter accommodating portion 34 extends to the back side of the case 3 and includes a front opening 41 having an opening on the entire front side. A ventilation hole 42 narrower than the front opening 41 is provided on the back side. Around the ventilation hole 42, a frame portion 43 located on the back surface side of the filter 4 and a side surface portion 44 extending to the front side from the frame portion 43 are provided.

Further, the case 3 of the embodiment includes a filter holding portion 45 so as to cross the frame portion 43. The filter pressing portion 45 is formed so as to project toward the front side of the frame portion 43 so that the filter 4 can be prevented from falling off from the filter accommodating portion 34. Since the filter 4 does not easily fall off from the filter accommodating portion 34, it is possible to prevent the filter 4 from being caught in the ventilation fan even if the ventilation fan is attached to the back side of the ventilation device.

As can be seen from FIG. 7, the adapter 61 of the embodiment is installed on the front side of the case 3 provided with the filter accommodating portion 34 having a U-shaped cross section. Therefore, the gap generated between the filter 4 provided in the filter accommodating portion 34 and the filter accommodating portion 34 can be suppressed. Therefore, it is possible to prevent large dust from entering through the gap generated between the filter 4 and the filter accommodating portion 34, so that it is not necessary to use a filter having packing on the peripheral edge, and the filter 4 can be opened at the front opening. It can be easily stored in the filter storage unit 34 from 41. Further, the filter 4 can be stored from the ventilation hole 42 side of the filter storage portion 34 by bending the filter 4, and when the ventilation device is attached to the cabinet 8, it can be stored from either the outside or the inside of the cabinet 8. The filter 4 can also be replaced. It should be noted that the ingress of water can also be suppressed.

The adapter 61 of the embodiment has a plate-like structure having a ventilation hole 62 near the center, so that the rigidity of the adapter 61 can be ensured while ensuring the ventilation performance from the center of the adapter 61. Since the adapter 61 is positioned so as to be interposed between the sub-louver member 22 and the filter 4, which will be described later, a space is formed between the sub-louver member 22 and the filter 4. Therefore, it is possible to prevent the water that has moved from the sublouver member 22 side to the filter 4 side from seeping into the filter 4. The adapter 61 shown in FIG. 2 includes an auxiliary support portion 63 extending in the vertical direction at a position near the center of the ventilation hole 62 of the adapter 61. Although the auxiliary support portion 63 is not essential, the risk of the filter 4 falling off can be suppressed by providing the auxiliary support portion 63.

Further, as can be understood from FIG. 8, in the ventilation device of the embodiment, the adapter 61 is attached so as to provide a drainable gap Sp at the lower part of the filter accommodating portion 34. Therefore, the water that has entered the filter 4 can be drained from the gap Sp. Therefore, it is possible to prevent water from infiltrating into the ventilation device, soaking a large amount of water into the filter 4, overflowing from the case 3 and entering the cabinet 8, and enhancing the waterproof performance provided by the ventilation device. ..

Further, the lower part of the adapter 61 of the example shown in FIG. 2 is provided with a movement control unit used for restricting the movement of the adapter 61 with respect to the case 3. In the example shown in FIG. 2, the movement restricting portion is a through hole portion 65, and as shown in FIG. 4, the boss stud 39 provided in the case 3 can be inserted. If the adapter 61 is placed adjacent to the case 3 so that the boss stud 39 is inserted into the hole 65, the movement of the adapter 61 with respect to the case 3 is restricted. If the movement of the adapter 61 with respect to the case 3 can be restricted, it is not necessary to hold the adapter 61 by hand when assembling the ventilation device, so that the assembling work becomes easier. In the embodiment, as can be understood from FIG. 7, by fixing the louver portion 2 to the case 3, the adapter 61 is sandwiched between the louver portion 2 and the case 3 and is firmly fixed. It will be.

As can be seen from FIG. 3, the adapter 61 of the embodiment includes a packing 67 on the surface side facing the case 3. That is, the packing 67 is positioned so as to be sandwiched between the adapter 61 and the case 3. With such a configuration, it is possible to more effectively suppress the deterioration of the dustproof performance due to the formation of a gap between the filter 4 and the filter accommodating portion 34.

Since the adapter 61 is not indispensable in the ventilation device, it may be selected whether to attach it or not, depending on the degree of demand for dustproof performance.

The ventilation device of the present embodiment is a louver 1 for an electric device storage cabinet, and as can be seen from FIGS. 9 and 10, the louver 1 for an electric device storage cabinet extends outward and downward from a vertical surface. A louver configured in two layers by combining a main body louver member 21 having a plurality of overhanging portions 27 and a sub-louver member 22 having a plurality of sub-overhanging portions 28 extending outwardly upward from a vertical surface toward the overhanging portion 27. A part 2 is provided, and a sub-overhanging part 28 located below the sub-louver member 22 is provided with a draining part serving as a route for draining the infiltrated water. It should be noted that the meaning of "consisting in two layers" described here means that it is not composed of three or more layers by adding other louver members. As described above, the number of louver members is two, the sub-overhanging portion 28 extends toward the overhanging portion 27, and the drainage portion is provided in the sub-overhanging portion 28 located below the sub-louver member 22. Since it is provided, it is possible to suppress the intrusion of water from the outside while maintaining the air permeability, and to make the structure easy to drain the invaded water.

The louver 1 of the embodiment includes a case 3 for accommodating the filter 4 and a louver portion 2. Further, the louver portion 2 includes a main body louver member 21 exposed to the outside and a sub louver member 22 located between the main body louver member 21 and the case 3. As can be understood from FIGS. 2 and 3, the main body louver member 21 includes a plurality of overhanging portions 27 extending outward and downward from a vertical surface, and a first locking portion 23 for locking to the case 3. Is provided on the upper left and right sides of the inside. Further, the sub-louver member 22 includes a plurality of sub-overhanging portions 28 extending outward and upward from the vertical surface. The sub-louver member 22 is provided with a second locking portion 24 for locking to the case 3 at the lower left and right side surfaces. Further, a first contact portion 25 bent toward the case 3 side is provided over one side surface of the upper end. Further, a second contact portion 26 is provided so as to project from the left and right side surfaces toward the main body louver member 21. In the embodiment, the overhanging portion 27 of the main body louver member 21 is opened so as to form a passage extending diagonally downward toward the outside of the louver 1, and the sub-overhanging portion 28 of the sub louver member 22 is formed. It is opened so as to form a passage extending diagonally upward toward the main body louver member 21.

The lower end of the opening of the sub-overhanging portion 28, that is, the tip of the sub-overhanging portion 28 is located on the front side of the overhanging portion 27 so that the overhanging portion 27 and the sub-overhanging portion 28 are smoothly ventilated. It is preferably configured to be located within the height range of the vertical opening Sv. If the lower end of the opening of the sub-overhanging portion 28 is located at a position higher than the lower end of the height of the vertical opening Sv of the overhanging portion 27 located on the front side and lower than the upper end, it becomes the overhanging portion 27. While ensuring the ease of ventilation of the sub-overhanging portion 28, a part of the water that has entered from the sub-overhanging portion 27 can be applied to the sub-overhanging portion 28. By hitting the sub-overhanging portion 28, the momentum of the water invading from the overhanging portion 27 is weakened, so that the movement of the water to the filter 4 side can be suppressed. In the example shown in FIG. 10 and the like, the lower end of the opening of the sub-overhanging portion 28 is located near the center position of the height of the vertical opening Sv which is the entrance / exit of the overhanging portion 27 located on the front side. It has become.

Further, it is preferable that the tip of the sub-overhanging portion 28 is adjacent to the vertical opening Sv of the facing overhanging portion 27. In this way, even if the main body louver member 21 and the sub louver member 22 are combined to form two layers, the thickness in the horizontal direction can be suppressed.

The sub-louver member 22 of the embodiment includes a drainage portion in the sub-overhanging portion 28 located at the lower portion. This drainage portion serves as a route for draining the water that has entered the inside of the louver portion 2, and the drainage portion is configured by forming a form in which a sub-overhanging portion 28 or the like is partially cut out. There is.

Further, it is desirable that a part of the horizontal plane 51 located below the sub-overhanging portion 28 of the sub-louver member 22 is cut out to provide a drainage portion. Even if water falls from the sub-overhanging portion 28 or the like on the horizontal plane 51 extending in the horizontal direction, the water is drained downward from the drainage portion provided on the horizontal plane 51 to the drain hole 18 provided at the lower end of the louver 1. be able to. Further, drainage is possible even with a structure in which the main body louver member 21 and the sub louver member 22 are fastened together.

Further, it is desirable that a part of the vertical surface 52 located below the sub-overhanging portion 28 of the sub-louver member 22 is cut out to provide a drainage portion. Since water can move beyond the space partitioned by the sublouver member 22, when water collects on one side of the space partitioned by the sublouver member 22, part of the water is moved to the space on the other side. Can be made to.

In the examples shown in FIGS. 9 to 12, the sub-overhanging portion 28 and the vertical plane and the drainage portion straddling the horizontal plane are provided, and the opening for the drainage portion is provided with the sub-overhanging portion 28 and the vertical surface. It is not necessary to provide them separately on the horizontal plane. In this example, only one drainage portion is arranged in the center of the sub-louver member 22 in the left-right direction, but it is not necessary to arrange the drainage portion in the center of the sub-overhang portion 28 in the left-right direction. , A plurality of drainage portions may be provided in the sub-overhanging portion 28.

The drainage portion does not have to be provided only at this position, and in the examples shown in FIGS. 11 to 13, the first drainage portion D1 is provided in the lower center of the sub-louver member 22 and the sub-louver member 22 is provided. The second drainage section D2 is provided on the lower left and right sides. The first drainage portion D1 is an opening that continues from the sub-overhanging portion 28 through a vertical plane to a horizontal plane, and the water that has entered the sub-overhanging portion 28 is basically the first drainage portion D1. Move down through.

In the example shown in FIG. 13, the water that has entered the inside of the louver is drained downward by dropping, and usually, the second drainage portion D2 formed between the sub-louver member 22 and the case 3 is formed. However, if excessive water infiltrates and the drainage from the second drainage section D2 is stagnant, a part of the water on the case 3 side of the sublouver member 22 is the first. It can flow down through the drainage section D1 of.

By the way, as can be understood from FIGS. 2 and 3, the case 3 covered by the louver portion 2 stands up on the front side of the first notch portion 31 that locks the first locking portion 23 of the main body louver member 21. It is provided at the top of the left and right sides. Further, the case 3 is provided with a second notch portion 32 for locking the second locking portion 24 of the sub louver member 22 at the lower portion of the left and right side surfaces rising to the front side. Further, the upper end of the case 3 is provided with a bent portion 38 bent toward the front side of the louver 1 of the electrical equipment storage cabinet 8, and the bent portion 38 and the louver portion 2 can be overlapped so as to be in contact with each other. Therefore, it is possible to prevent water from entering the louver 1 from between the bent portion 38 and the louver portion 2.

At the lower end of the case 3 shown in FIGS. 2 and 3, a strip-shaped regulating portion 35 bent on the back side is provided over one side surface. By forming the regulating portion 35 in a band shape at the lower end of the case 3 in this way, the louver 1 can be uniformly arranged at an appropriate position. Further, bolts 36 are fixed by welding around the filter accommodating portion 34 so as to project toward the back surface side. A flange portion 37 is provided on the base end side of the bolt 36, but when the louver 1 is attached to the housing of the electrical equipment storage cabinet 8, both the flange portion 37 and the regulation portion 35 are surfaced. The end faces are configured to be on the same surface so that they can come into contact with the surface. In this way, the case 3 is provided with a bolt 36 for attaching to the cabinet 8, and a flange portion 37 on one end side of the bolt 36 limits the amount of compression of the packing 91 with the same limit amount as that of the regulation portion 35. The louver 1 can be arranged at an appropriate position more uniformly if the configuration is provided with the above.

Here, an example of how to assemble the louver 1 will be described. First, the filter 4 is stored in the filter storage portion 34 of the case 3. If it is necessary to improve the dustproof performance, an adapter 61 is further attached. After that, the second locking portion 24 of the sub louver member 22 is inserted into the second notch portion 32 of the case 3. At this time, the first contact portion 25 can be brought into contact with the case 3. Then, the first locking portion 23 of the main body louver member 21 is hung on the first notch portion 31 of the case 3. At this time, the second contact portion 26 can be inscribed in the main body louver member 21. Finally, the main body louver member 21 is screwed from the outside of the front surface. In the embodiment, at this time, the screw 94 is screwed into the boss stud 39 provided in the case 3 after being inserted into the main body louver member 21 and the sub louver member 22.

In this embodiment, as can be understood from FIG. 10, the first contact portion 25 provided on the sub louver member 22, the case 3, and the second contact portion 26 provided on the sub louver member 22 Since the main body louver member 21 is brought into contact with the louver member 21 and fixed with screws, rattling of the louver 1 can be suppressed. Further, since the upper end of the sub louver member 22 is bent toward the case 3 side over one side surface to form the first contact portion 25 and is brought into contact with the case 3, the upper part of the louver 1 (the main body louver member 21 and the case 3 are bent). The water that has entered through the gap between the joint surface with the portion 38) is discharged to the overhanging portion 27 of the main body louver member 21, or the inside of the louver portion 2 is dropped and the drain hole 18 provided at the lower end of the louver 1 is provided. Is discharged from. That is, by providing the first contact portion 25, it is possible to prevent water from entering the filter 4 side and seeping into the filter 4, and a drainage flow path to the outside of the louver 1 is secured. The drain hole 18 of the embodiment is configured so as to cut out the back surface side of the lower portion of the main body louver member 21.

Next, an example of how to attach the louver 1 to the electrical equipment storage cabinet 8 will be described. As can be understood from FIGS. 2 and 3, the outer wall 80 of the electrical equipment storage cabinet 8 is provided with a louver mounting hole 81 aligned with the filter storage portion 34 and a round hole 82 aligned with the position of the bolt 36. ing. In this example, after the packing 91 is attached to the louver 1, the filter storage portion 34 is inserted into the louver mounting hole 81, and then the fixture is tightened in order to attach the louver 1 to the electrical equipment storage cabinet 8 via the packing 91. ..

Specifically, the bolt 36 provided in the case 3 is inserted into the round hole 92 of the packing 91 and the round hole 82 of the outer wall 80 of the electric device storage cabinet 8, and the nut 95 is turned from the inside of the electric device storage cabinet 8. Tighten and fix. In this example, the bolt 36 and the nut 95 are the fittings.

When the nut 95 is screwed in, the packing 91 arranged between the case 3 and the electric device storage cabinet 8 is crushed, but at the position where a certain amount is tightened, the regulating portion 35 provided at the lower end of the case 3 is electrically operated. Since it is configured to be in contact with the outer wall 80 of the equipment storage cabinet 8, it is possible to avoid excessive tightening of the packing 91. Therefore, it is possible to prevent the nut 95 from being overtightened so that the outer wall 80 of the electrical equipment storage cabinet 8 is close to the louver 1 and narrows the space between the drain hole 18 and the outer wall 80. Further, since the end face of the flange portion 37 around the bolt 36 and the end face of the regulation portion 35 are on the same surface, the entire louver 1 can be uniformly tightened. Therefore, the louver 1 is not slanted and can be properly attached.

Although the present invention has been described above by taking the embodiment as an example, the present invention is not limited to the above embodiment and can be in various modes. For example, the structure of the louver portion is not limited to the embodiment as shown in the drawing, and the directions of the vents of the main body louver member and the sub louver member may be different.

3 Case 34 Filter storage 61 Adapter Sp gap

Claims (3)

A ventilation device for an electrical equipment storage cabinet provided with a case in which a filter storage portion that opens on the front side extends to the back side, and an adapter that covers the upper portion and the side portion of the peripheral portion of the filter storage portion on the front side of the case. The ventilation device for an electrical equipment storage cabinet according to claim 1, wherein an adapter is attached so as to provide a drainable gap at the lower part of the filter storage portion. The ventilator for an electrical equipment storage cabinet according to claim 1 or 2, wherein a movement control unit used for restricting the movement of the adapter with respect to the case is provided in the lower part of the adapter.

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