JP2005057213A - Ventilating device for ventilation - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a ventilating arrangement for ventilation, which can be applied not only to a cabinet for performing natural ventilation, but also can be satisfactorily applied to conditions where waterproof function is required, and which enables easy change of filters inside the ventilating arrangement from outside the cabinet. <P>SOLUTION: The ventilating arrangement comprises a louver plate 2 for covering a mounting hole 1 from outside, and a dust-proof and insect-proof filter 5 which is placed inside the louver plate 2. The louver plate 2 has a ventilating wall 11 wherein a louver wall 10 is formed so as to have multiple stages, and has a peripheral side wall 12 enclosing the peripheral edge of the ventilating wall 11, which are integrated to each other. In a state where the louver plate 2 is mounted on and fixed to the mounting hole 1, an accommodating space S is retained between the mounting hole 1 and the louver plate 2, into which a filter frame 3 and the filter 5 are accommodated. A loading hole 15 is opened at the lower wall of the peripheral wall 12 so that the filter 5 can be inserted and taken out therethrough. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention mainly incorporates a ventilation device for ventilation applied to electrical equipment boxes (hereinafter referred to as a casing) such as distribution boards and switchboards installed outdoors, and in particular, a dustproof or insectproof filter. The present invention relates to a natural ventilation type ventilation device.

  It is publicly known that in a ventilating apparatus for ventilation that incorporates a dustproof filter, the filter can be replaced from the outer surface side of the housing (see Patent Documents 1 and 2). The ventilation device of the present invention includes a louver plate that covers a ventilation port from the outer surface side, a wind guide box that prevents air and rain from blowing in by changing the air entering from the louver plate upward, and a filter for dust and insect protection. However, the basic structure is known (see Patent Document 3). In this case, since the filter is disposed in the upper surface opening of the air guide box, it is necessary to change the filter by entering the housing.

  In the ventilation device in Patent Document 1, a ventilation port opened in the outer wall of a housing is closed with a breathable cover, and a filter is detachably accommodated on the inner surface of the cover. The cover is supported by a hinge so as to be freely swingable and open, and is restricted to a certain opening angle by a stopper provided on the inner surface thereof. On the inner surface of the vent hole, a presser frame is provided to hold the filter in cooperation with the cover.

  The ventilation device of Patent Document 2 includes a support frame that is fitted into an accommodation recess provided in the outer wall of the housing, and a filter unit that can be inserted into and removed from the support frame. The support frame is pivotally supported by a pin provided in the housing recess so as to be swingable and openable, and the support frame is accommodated by releasing the engagement of the elastic engagement claw provided between the support frame and the housing recess. The filter unit can be swung outwardly from the recess, and the filter unit can be extracted upward from the support frame in this open state. A group of ventilation holes are opened in the outer wall of the support frame, and a ventilation fan is arranged inside the recess. The filter unit includes a bookcase-like filter frame and a filter that is inserted into and removed from the filter frame.

Japanese Patent Laid-Open No. 6-177469 (paragraph number 0008, FIG. 3) JP-A-5-261227 (paragraph number 0014, FIG. 1) Japanese Utility Model Publication No. 5-8713 (page 2, column 4, Fig. 1)

  According to the ventilating devices of Patent Literature 1 and Patent Literature 2, the filter can be easily replaced by a simple operation by simply swinging and opening the support frame and the cover. Since the filter can be replaced from the outer surface side of the casing, there is no need to have a casing management engineer present at the time of filter replacement. However, in these ventilation devices, since the support frame and the cover that support the filter are directly exposed to the outer wall of the housing, it is not possible to prevent the intrusion of rainwater, and the application target of the ventilation device is installed indoors. It is limited to housings such as distribution boards and computer units. Furthermore, since the filter is exchanged by opening and closing the support frame and the cover, the support frame and the cover may be opened by external vibration when the support frame and the cover are forgotten to be locked. The ventilation device of Patent Document 2 is premised on forced ventilation using a ventilation fan together, and its application target is limited to a forced ventilation type casing.

  The object of the present invention can be applied to a case where ventilation is performed by a natural ventilation method, and can be applied without problems even under use conditions where a waterproof function is required. In addition, the filter disposed inside the apparatus can be replaced. It is providing the ventilation apparatus for ventilation which can be performed simply from the outer surface side of a housing | casing.

  The ventilation apparatus for ventilation according to the present invention includes a louver plate 2 that covers the mounting opening 1 provided on the outer wall W of the housing from the outer surface side, and a dust-proof and insect-proof filter 5 that is disposed on the inner surface of the louver plate 2. . The louver plate 2 is integrally provided with a ventilation wall 11 in which a louver wall 10 is formed in a multistage shape and a peripheral side wall 12 surrounding the periphery of the ventilation wall 11. In a state where the louver plate 2 is mounted and fixed to the outer wall W, an accommodation space S is formed between the mounting opening 1 and the louver plate 2. The filter 5 loaded in the housing space S is configured to be able to be taken in and out through a loading port 15 that opens toward the peripheral side surface of the housing space S (Claim 1).

  Inside the inner surface of the louver plate 2, an air guide box 4 is disposed that guides the ventilation air entering through the filter 5 upward (Claim 2). As shown in FIG. 4, in a state where the louver plate 2 is mounted and fixed to the mounting opening 1, the peripheral side wall 12 is received by the outer wall W, and the accommodation space S is secured between the mounting opening 1 and the louver plate 2. Item 3).

  Inside the accommodation space S, the filter frame 3 is disposed in cooperation with the ventilation wall 11 so as to sandwich and hold the filter 5 back and forth. As shown in FIG. 3, the filter frame 3 is provided with a lid 19 for opening and closing the loading port 15 (Claim 4).

  A packing 7 is interposed between the peripheral side wall 12 of the louver plate 2 formed in a square shape and the peripheral wall of the mounting opening 1. A loading port 15 is cut out and formed in the lower wall of the peripheral side wall 12 (Claim 5).

  As shown in FIG. 5, the filter frame 3 and the air guide box 4 are integrally formed (Claim 6).

  In the ventilation device of the present invention, the filter 5 is disposed on the inner surface of the louver plate 2, and the filter 5 prevents insects and rainwater from entering through the ventilation openings 13. In this ventilation device, in a state where the louver plate 2 is mounted and fixed to the mounting opening 1, the storage space S is secured between the mounting opening 1 and the louver plate 2, and the filter 5 can be loaded inside the storage space S. did. In other words, after the filter 5 is loaded in the housing space S formed on the outer surface from the outer wall W, the filter 5 can be taken in and out from the loading port 15 that faces the peripheral side surface of the housing space S. Therefore, according to the ventilating device of the present invention, the filter disposed inside the louver plate 2 although the inside of the housing can be ventilated by a natural ventilation system while preventing the intrusion of rainwater with the louver plate 2 and the filter 5. 5 can be easily performed from the outer surface side of the housing, and the labor required for the filter replacement can be remarkably reduced as compared with the conventional ventilation device (claim 1).

  According to the ventilation device in which the air guide box 4 that guides the ventilation air upward is arranged inside the louver plate 2, rainwater can be prevented from entering the housing even under worst conditions such as storms. it can. During a storm, a part of rainwater adhering to the filter 5 tries to enter the indoors together with the wind. However, since rainwater adheres to the wind guide portion 25 and flows down while the wind is guided upward in the wind guide box 4, the rainwater does not enter the housing (claim 2).

  According to the ventilating device that secures the accommodation space S between the mounting opening 1 and the louver plate 2 by receiving the circumferential side wall 12 with the outer wall W, the circumference of the accommodation space S is surrounded by the circumferential side wall 12, The internal parts can be prevented from being exposed to the outer surface, and foreign matters such as dust can be prevented from entering the louver plate 2. It is hard to receive mischief. Since the peripheral side wall 12 of the louver plate 2 having higher structural strength than other parts is received by the outer wall W of the housing, the fastening strength of the louver plate 2 to the housing can be improved.

  According to the ventilating device in which the filter frame 3 is arranged inside the housing space S and the filter 5 is loaded therein, the filter 5 is securely held between the front and rear by the ventilation wall 11 and the filter frame 3 that are opposed to each other. It is possible to prevent the filter 5 loaded in the filter frame 3 from being distorted by wind pressure, floating due to external vibrations, or coming out of the loading port 15, so that it is always stable and dust-proof and insect-proof. Can be demonstrated. If the loading port 15 can be opened and closed by the lid 19 provided on the filter frame 3, the filter 19 can be more reliably prevented from being pulled out by keeping the lid 19 closed (claim 4).

  When the packing 7 is interposed between the peripheral side wall 12 of the louver plate 2 formed in a square shape and the peripheral wall of the mounting opening 1, and the loading port 15 is cut out on the lower surface wall of the peripheral side wall 12, It is possible to reliably prevent rainwater and dust flowing down along the inside of the louver plate 2 (claim 5).

  According to the ventilation device in which the filter frame 3 is formed integrally with the air guide box 4, the overall cost of the ventilation device can be reduced by the amount that can reduce the number of components.

  1 to 4 show an embodiment of a ventilation device according to the present invention. In FIG. 2, the ventilation device includes a louver plate 2 that covers the mounting opening 1 provided on the outer wall W of the housing from the outer surface side, a filter frame 3 that is disposed on the inner surface of the louver plate 2, and a louver that is attached to the mounting opening 1. An air guide box 4 that guides the air entering from the plate 2 upward, a dust-proof filter 5, a presser frame 6 disposed on the inner surface of the mounting opening 1, and a packing 7 attached to the louver plate 2. Constitute.

  The louver plate 2 is formed of a rectangular press-molded product made of a steel plate or a stainless steel plate, and has a ventilation wall 11 in which left and right laterally long louver walls 10 are formed in a multi-stage shape, and a periphery surrounding the periphery of the ventilation wall 11. The side wall 12 is integrally provided. The louver wall 10 is inclined obliquely downward, and takes in ventilation air from a ventilation opening 13 formed by forming the louver wall 10. Seven stud bolts 14 are fixed along the inner peripheral edge of the ventilation wall 11, and these stud bolts 14 can be fitted into the mounting opening 1. The raw wall around the louver wall 10 and the raw wall between the upper and lower sides of the louver wall 10 function as a receiving wall for supporting and holding the filter 5.

  The front and rear dimensions of the peripheral side wall 12 are set sufficiently larger than the front and rear dimensions of the peripheral side wall formed on the conventional louver plate. In this embodiment, the longitudinal dimension of the peripheral side wall 12 is set to about three times the longitudinal dimension of the conventional product. This is because the housing space S for the filter 5 is secured between the mounting opening 1 and the louver plate 2 in a state where the louver plate 2 is mounted and fixed to the mounting opening 1. A loading port 15 for taking in and out the filter 5 is cut out in the lower wall of the peripheral side wall 12. A packing 7 having a U-shaped cross section is attached to the free end of the peripheral side wall 12 excluding the loading port 15.

  In FIG. 2, the filter frame 3 protrudes inward from both sides of the flange wall 17, a rectangular holder 16 whose front surface is open, a flange wall 17 projecting to the left and right sides and the upper side of the holder 16. It consists of a plastic molded product integrally provided with the leg wall 18. The lower surface side of the holder 16 is opened, and a lid 19 for opening and closing the opening and the loading port 15 is formed at the lower end of the holder 16 via an integrally formed hinge. The previous filter 5 is loaded in the holder 16.

  The back wall of the holder 16 is greatly opened to allow ventilation, and a cross-shaped receiving bar 20 that holds and holds the filter 5 is provided in the opening. As shown in FIG. 4, the leg wall 18 is sandwiched between the ventilation wall 11 and the flange 26 of the air guide box 4, and restricts the filter frame 3 in the used state from moving back and forth inside the louver plate 2. It is provided for this purpose. The lid 19 can swing up and down up and down, and as shown by an imaginary line in FIG. 3, when the loading port 15 is closed, its end is received by the inner surface of the peripheral wall 15 a of the loading port 15 and is closed. This prevents the filter 5 from coming out. Reference numeral 19a denotes an operation knob for opening the lid 19. An insertion hole 21 for the stud bolt 14 is formed in the flange wall 17.

  In FIG. 1, the air guide box 4 includes an air guide portion 25 that opens toward the front surface and the upper surface, a square frame-like flange 26 that projects to the periphery of the front opening of the air guide portion 25, and the air guide portion 25. A baffle plate 27 that is fixed to the upper part of the front face and prevents intrusion of rainwater that has blown through the upper louver wall 15 together with the ventilation air is integrally provided. The wind guide portion 25 is a box-shaped body having a U-shaped cross section, and the lower portion of the wind guide portion 25 is inclined downwardly downward to smoothly drain rainwater adhering to the wind guide portion 25. An insertion hole 28 (see FIG. 2) for the stud bolt 14 is formed in the flange 26. The air guide box 4 can be formed as a plastic molded product, or can be formed from a steel plate or a stainless steel plate.

  As the dustproof filter 5, a semi-rigid plate-shaped honeycomb body having the same fiber structure as that of the nonwoven fabric, a saran honeycomb, or the like can be applied. In this example, Filedon PS / 400 (trade name) manufactured by Nippon Vilene Co., Ltd., having a thickness dimension of 12 mm, was cut into a predetermined size to obtain a filter 5. The filter 5 covers the entire inner surface of the louver plate 2 in a state where it is loaded in the holder 16, but since the ventilation resistance is relatively small, natural ventilation can be performed without any problem. Moreover, since it has moderate self-shaping property, it is not necessary to support the filtration element with the filter frame. As shown in FIG. 1, in the state where the filter 5 is loaded in the holder 16, the front and rear surfaces thereof are held by the receiving wall of the ventilation wall 12, the back wall of the holder 16 and the receiving bar 20. It will not move.

  The presser frame 6 is made of a steel plate or a stainless steel plate, and is formed of a rectangular frame body that is punched out in substantially the same shape as the flange 26 of the air guide box 4, and the insertion hole 30 (for the stud bolt 14) along the plate surface. 2) is formed.

  When the ventilation device is attached to the housing, the filter frame 3 loaded with the filter 5 and the air guide box 4 are temporarily assembled on the stud bolt 14 of the louver plate 2. The temporary assembly unit is assembled from the outer surface side of the housing, and the stud bolt 14 is inserted into the mounting opening 1. Further, the presser frame 6 is assembled to the stud bolts 14 from the inner surface side of the housing, and nuts 22 are screwed into all the stud bolts 14 to fix the louver plate 2, the filter frame 3, and the air guide box 4 to the housing. The filter 5 may be finally loaded in the filter frame 3.

  According to the ventilation device configured as described above, the filter 5 is disposed on the inner surface of the louver plate 2, so that it is possible to reliably prevent insects and rainwater from entering through the ventilation openings 13. A part of rainwater adhering to the filter 5 enters the wind guide box 4 together with the ventilation air. While the ventilation air is directed upward in the wind guide box 4, the rainwater adheres to the wind guide portion 25. As it flows down, rainwater does not enter the housing. Therefore, the inside of the housing can be ventilated by a natural ventilation system while preventing the intrusion of rainwater between the louver plate 2 and the air guide box 4.

  The filter 5 in the filter frame 3 can be easily replaced simply by opening the lid 19, and it is not necessary to enter the inside of the housing when replacing the filter. Therefore, it is not necessary to have the doors unlocked just for the purpose, and even an unqualified worker can perform the replacement work. Since the filter 5 is replaced while the louver plate 2 and the filter frame 3 are fixed, it is surely solved that the mounting opening 1 is opened due to a misunderstanding or an operation mistake, which is often seen in a conventional ventilation device. it can. Even if the lid 19 is forgotten to close, the contact resistance between the louver plate 2 and the filter frame 3 and the filter 5 is large, so the filter 5 does not come out of the filter frame 3 and is loaded until the next replacement. The state can be maintained.

  FIG. 5 shows another embodiment of the ventilation device. Therefore, the filter frame 3 is formed integrally with the air guide box 4 so that the number of components of the ventilation device can be reduced. Specifically, a portal-shaped peripheral frame 35 is provided in front of the flange 26 of the air guide box 4 so that the filter 5 can be accommodated in a space surrounded by the peripheral frame 35. On the inner surfaces of the left and right walls of the air guide box 5, ribs 36 for receiving the filter 5 are formed in a multistage shape. The filter 5 is formed by adhering and fixing a shape-retaining frame 37 that can be ventilated to the back surface of the filtration element. The shape retaining frame 37 is received by the inner edge of the flange 26 and the previous rib 36 to prevent the filter 5 from being bent and deformed toward the inner space side of the air guide box 4. A locking claw 38 is provided at the lower end of the shape retaining frame 37. By engaging the locking claw 38 with a projection 39 provided on the flange 26, the filter 5 can be engaged and held without being separated. In order to perform the same function as the baffle plate 27, the upper part of the shape retaining frame 37 is covered with a wall 40 so as not to allow ventilation. Since others are the same as the previous embodiment, the same reference numerals are assigned to the same members, and descriptions thereof are omitted.

  7 and 8 show another embodiment of the ventilation device. In this case, the inner side of the filter 5 is received by the presser frame 6 so that the filter frame 3 can be omitted. For this purpose, a cross-shaped receiving bar 45 similar to the receiving bar 20 of the holder 16 is provided in the opening portion of the presser frame 6. Further, the lid frame 46 is attached and fixed using the stud bolts 14 on both lower sides of the louver plate 2 so that the loading port 15 can be opened and closed by the lid 19 formed integrally with the lid frame 46 via the hinge portion. did. As shown in FIG. 8, grooves 47 that engage with the stud bolts 14 are formed in notches on both sides of the lid frame 46.

  As described above, if the filter 5 is sandwiched and held between the presser frame 6 and the louver plate 2, the number of components of the ventilation device can be reduced and the overall cost can be reduced by the amount that the filter frame 3 can be omitted. Compared to the filter 5 described with reference to FIG. 1, there is an advantage that the front and rear thickness of the filter 5 can be increased. The ventilation device in this embodiment is basically used in a state where the air guide box 4 is omitted as shown in FIG. 7, but the air guide box 4 can be assembled and used if necessary. In that case, the flange 26 of the air guide box 4 is overlaid on the surface of the presser frame 6 and is fastened together with the nut 22.

  In addition to the above embodiment, an operation string and an operation handle are fixed to the filter 5 so that the extraction operation from the filter frame 3 can be facilitated. The lid 19 can be attached to the louver plate 2. The filter frame 3 and the filter 5 can be configured as a single unit part. In this case, the filter frame 3 on which the filter 5 is mounted can be directly put in and out of the accommodation space S. The loading port 15 can be opened in any one of the left and right walls or the upper wall of the peripheral side wall 12.

  In the embodiment described above, the peripheral side wall 12 is received by the outer wall W to secure the accommodation space S between the mounting opening 1 and the louver plate 2, but this is not necessary. For example, as shown in FIG. 6, a distance collar 43 that fits outside the stud bolt 14 is arranged between the flange wall 17 of the filter frame 3 and the flange 26 of the air guide box 4 to secure the accommodation space S. Can do. The packing 7 in FIG. 6 is formed in a band shape and is disposed between the flange 26 and the outer wall W. If necessary, the accommodating space S can be secured by interposing a spacer between the outer wall W and the louver plate 2. The spacer in this case can also serve as a waterproof packing.

It is a vertical side view of a ventilation apparatus. It is a disassembled perspective view of a ventilation apparatus. It is a vertical side view which shows the detailed structure of a loading port. It is a cross-sectional top view which shows the detail of the attachment structure of a ventilation apparatus. It is sectional drawing which shows another Example of a ventilation apparatus. It is sectional drawing which shows another Example of a ventilation apparatus. It is sectional drawing which shows another Example of a ventilation apparatus. It is a perspective view which shows the mounting structure of a cover and a cover frame.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Mounting opening 2 Louver board 3 Filter frame 4 Wind guide box 5 Filter 7 Packing 12 Peripheral side wall 15 Loading port 19 Lid S Storage space W Outer wall

Claims (6)

A louver plate 2 that covers the mounting opening 1 provided on the outer wall W of the housing from the outer surface side, and a dust-proof and insect-proof filter 5 disposed on the inner surface of the louver plate 2;
The louver plate 2 is integrally provided with a ventilation wall 11 in which a louver wall 10 is formed in a multistage shape and a peripheral side wall 12 surrounding the periphery of the ventilation wall 11.
In a state where the louver plate 2 is mounted and fixed to the outer wall W, an accommodation space S is formed between the mounting opening 1 and the louver plate 2;
A ventilating device for ventilation configured to allow the filter 5 loaded in the housing space S to be taken in and out through a loading port 15 that opens toward the peripheral side surface of the housing space S.   The ventilation apparatus for ventilation according to claim 1, wherein an air guide box (4) for guiding the ventilation air entering through the filter (5) to be directed upward is arranged inside the louver plate (2).   3. The housing space S is secured between the mounting opening 1 and the louver plate 2 by receiving the peripheral side wall 12 with the outer wall W in a state where the louver plate 2 is mounted and fixed to the mounting opening 1. Ventilation device for ventilation. Inside the accommodation space S, a filter frame 3 is disposed that cooperates with the ventilation wall 11 to sandwich and hold the filter 5 back and forth,
The ventilation device for ventilation according to claim 1, 2 or 3, wherein a lid 19 for opening and closing the loading port 15 is provided in the filter frame 3. A packing 7 is interposed between the peripheral side wall 12 of the louver plate 2 formed in a square shape and the peripheral wall of the mounting opening 1,
The ventilating device for ventilation according to claim 3 or 4, wherein a loading port (15) is formed in the lower wall of the peripheral side wall (12).   The ventilation apparatus for ventilation according to claim 4, wherein the filter frame (3) and the air guide box (4) are integrally formed.

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