JP2015222132A - Ventilation device for electric equipment storage box - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a ventilation device for an electric equipment storage box which eliminates the leakage of exhaust air from a fan into a cabinet even when the direction of the fan is changed, and is excellent in workability.SOLUTION: A ventilation device for an electric equipment storage box includes a louver 3 arranged outside a ventilation opening of a cabinet, a louver fixture 6 which fixes the louver 3 from the inside of the cabinet, and a fan 8 positioned in an opening portion of the louver. Between the louver fixture 6 and the fan 8, a wind pass prevention member 9 covering the whole ventilation opening is provided, so as to eliminate the leakage of exhaust air from the fan into the cabinet.

Description

  The present invention relates to a ventilation device for an electrical equipment storage box including a louver and a fan.

  As a ventilation device for electrical equipment storage boxes, a structure in which a louver is disposed outside a ventilation opening of a cabinet is widely used. When the cabinet vent is circular, the cylindrical part formed integrally with the louver is projected to the inside of the cabinet through the vent, and the nut-like louver mounting member is screwed into the male screw formed on the outer peripheral surface of the louver. A structure for fixing is generally used.

  Further, as shown in Patent Document 1, a fan may be attached to the louver as a retrofit. There is no problem if the fan exhaust and intake are the same size, but the fan ventilation path is enlarged toward the exhaust side, and the size and shape of the exhaust and intake are often different. It is difficult to make the cylindrical portion of the louver coincide with the fan ventilation path.

  In other words, the fan intake port faces the louver side at the intake side ventilation port, and the exhaust port of the fan faces the louver side at the exhaust side ventilation port. It becomes impossible to fit the air intake and exhaust holes of the fan to the cylindrical part without any gaps. For this reason, part of the exhaust vent of the fan reaches the outside of the tubular part of the louver at the exhaust vent, so that part of the exhaust from the fan is not sent to the outside of the cabinet and leaks into the cabinet. Ventilation efficiency could be reduced.

  Although it is conceivable to close the gap using packing or the like to prevent the exhaust from the fan from leaking into the cabinet, there is another problem that the construction becomes difficult.

Japanese Utility Model Publication No. 6-31196

  Therefore, the object of the present invention is to solve the above-mentioned conventional problems, and even when the direction of the fan is changed, the exhaust from the fan does not leak into the cabinet, and the ventilation for the electrical equipment storage box has excellent workability. Is to provide a device.

  The present invention made to solve the above-described problems includes a louver disposed outside a ventilation opening of a cabinet, a louver mounting member for fixing the louver from the inside of the cabinet, and a fan located at an opening of the louver. In the ventilating apparatus for an electrical equipment storage box, an air vent preventing member that covers the entire vent is provided between the louver mounting member and the fan.

  According to a second aspect of the present invention, in the first aspect of the present invention, the air vent preventing member is brought into contact with the wall surface of the cabinet over the entire circumference around the ventilation port.

  According to a third aspect of the present invention, in the second aspect of the present invention, the ventilation port has a circular shape, and the exhaust port of the fan is different in size or shape from the intake port.

  According to a fourth aspect of the present invention, in the third aspect of the present invention, there is provided a fan mounting member for attaching the fan and the ventilating prevention member so as to be sandwiched between the louver and the louver mounting member. The fan mounting member is formed so as to cover the whole.

  According to a fifth aspect of the present invention, in the invention of the fourth aspect, the ventilating prevention member is a box-like body, and the ventilation port formed to be larger than the opening of the exhaust port or the intake port of the fan and the fan are attached. It is characterized by having a fan mounting location.

  According to a sixth aspect of the present invention, in the fifth aspect of the present invention, the ventilating prevention member is formed with a through hole at one diagonal position for simultaneously mounting the ventilating prevention member and the fan to the fan mounting member, and the fan is A screw hole to be attached to the ventilating prevention member is formed at the other diagonal position.

  According to the present invention, it is possible to prevent the exhaust from the fan from leaking into the cabinet by providing the air vent preventing member that covers the entire ventilation port between the louver mounting member and the fan. In addition, this structure is superior in workability compared to the gap closing by packing or the like.

  According to the second aspect of the present invention, it is possible to completely prevent the exhaust from the fan from leaking into the cabinet by causing the air vent preventing member to contact the wall surface of the cabinet over the entire circumference of the ventilation port. In addition, the ventilating prevention member can have a simple structure.

  According to the third aspect of the present invention, even when the fan is installed with the front and back sides being replaced, it is possible to prevent air from being released into the cabinet from between the fan and the louver.

  According to invention of Claim 4, the whole ventilator located in a cabinet can be covered with a draft prevention member.

  According to invention of Claim 5, it can exhaust to a draft removal prevention member directly from a fan.

  According to the invention of claim 6, since the fan can be attached to the fan attachment member in a state of being attached to the air vent prevention member, the workability can be improved.

It is a perspective view which shows embodiment. It is a disassembled perspective view. It is a disassembled perspective view. It is a perspective view of a fan attachment member. It is a perspective view of an air vent prevention member. It is a front view which shows the inlet port of a fan. It is a front view which shows the exhaust port of a fan. It is sectional drawing which shows the structure by the side of exhaust. It is sectional drawing which shows the structure by the side of intake. It is sectional drawing which shows the structure of the conventional exhaust side.

Preferred embodiments of the present invention are shown below.
FIG. 1 is a perspective view showing an embodiment of the present invention, and FIGS. 2 and 3 are exploded views thereof. In these drawings, reference numeral 1 denotes a wall surface of an electric equipment storage cabinet, and only a part of the wall is shown in a rectangular shape. This wall surface may be a side plate of a cabinet, a door, or a back plate.

  Reference numeral 2 denotes a circular ventilation port formed in the cabinet. As shown in FIGS. 8 and 9, a louver 3 is attached to the ventilation opening 2 from the outside of the cabinet. The louver 3 is made of synthetic resin, and a cylindrical portion 4 to be inserted into the ventilation port 2 is integrally formed on the back surface of the louver body. A male screw 5 is formed on the outer peripheral surface of the cylindrical portion 4. As shown in FIG. 3, a nut-like louver mounting member 6 is screwed into the male screw 5 from the inside of the cabinet to fix the louver 3. Yes. In addition, linear portions 21 that are notched in a straight line are formed on the inner periphery of the ventilation opening 2 and the outer periphery of the male screw 5, respectively, and the louver 3 is attached to the cabinet by the linear portions 21 contacting each other. The structure does not rotate. In the present embodiment, the ventilation opening 2 is circular, but may be other shapes such as a quadrangle.

  Although the above structure is the same as the conventional structure, in this embodiment, the fan mounting member 7 is attached so as to be sandwiched between the wall surface 1 of the cabinet and the louver mounting member 6. A fan 8 and an air vent prevention member 9 are attached to the fan attachment member 7.

  The fan mounting member 7 is a rectangular flat plate, and has a hole 10 through which the tubular portion 4 can be passed, as shown in FIG. As shown in FIGS. 3 and 4, a screw-fixing seat 12 having a screw hole 11 is bent in a U-shape at one diagonal. As shown in FIG. 3, the fan mounting member 7 is screwed into the hole 10 of the fan mounting member 7 and the louver mounting member 6 is screwed into the hole 10 so that the fan mounting member 7 becomes the inner surface of the wall surface 1 of the cabinet. It is closely fixed to. In the attached state, the screwing seat 12 is formed at a position inside the cabinet from the wall surface 1 of the cabinet with respect to the thickness of the louver mounting member 6, thereby eliminating interference with the louver mounting member 6. In addition, the fan 8 and the draft prevention member 9 can be attached without penetrating the flat plate portion of the fan attachment member 7. In addition, if the straight part 21 is formed also on the inner periphery of the hole 10 corresponding to the straight part 21 formed on the outer periphery of the male screw 5, the fan mounting member can prevent the fan and the louver 3 from rotating. it can.

  The fan 8 is the same as the conventional one, and the air passage of the fan 8 is expanded toward the exhaust side as described above. Therefore, the intake port 13 is circular as shown in FIG. 6, but the exhaust port 14 is an octagon that is larger in size than the intake port 13 as shown in FIG. 7. The fan 8 is a retrofitting member.

  The ventilating prevention member 9 is a shallow box-like body as shown in FIG. 5, and a vent 15 is formed in the center of the vent 15 so as to be larger than the opening of the exhaust port 14 of the fan 8. Further, the peripheral edge portion 16 is bent so as to be fitted to the outside of the screw fixing seat portion 12 of the fan mounting member 7. The bending depth is substantially equal to the protruding amount of the screwing seat 12, and the tip of the peripheral edge 16 of the ventilating prevention member 9 abuts against the wall surface 1 of the cabinet over the entire circumference around the ventilation port 2 in the attached state. Keep it like that.

  The ventilating prevention member 9 is formed with through holes 17 for simultaneously attaching the ventilating preventing member 9 and the fan 8 to the fan mounting member 7 at one diagonal position, and screw holes for mounting the fan 8 to the ventilating prevention member 9. 18 is formed at the other diagonal position. The vicinity of the screw hole 18 is a fan mounting location. For this reason, first, the fan 8 can be fixed to the draft prevention member 9 with the screw 19, and the draft prevention member 9 can be fixed together with the fan 8 to the screw fixing seat 12 of the fan mounting member 7 with the screw 20. Good workability. Further, since the fan 8 is fixed at the four corners by the screws 19 and 20, the fan 8 does not rattle. Since the screw fixing seat 12 is formed only at one diagonal of the fan mounting member 7, the louver mounting member 6 is manually tightened without the screw fixing seat 12 being in the way. Can do.

  FIG. 8 is a cross-sectional view of the exhaust side after being fixed as described above. As shown in FIG. 8, the exhaust port 14 of the fan 8 is larger than the intake port 13. By forming the air vent 15 of the air vent prevention member 9 to be larger than the opening of the air exhaust port 14, it is possible to prevent the exhaust from the fan 8 from interfering with the air vent prevention member 9. Further, since the fan 8 is in contact with the periphery of the vent hole 15 of the air vent prevention member 9 and the tip of the peripheral edge portion 16 of the air vent prevention member 9 is in contact with the wall surface 1 of the cabinet, the air vent prevention member 9 makes the cabinet The whole ventilation device located inside can be covered, and the exhaust from the fan 8 does not leak into the cabinet. Moreover, the ventilating prevention member 9 can have a simple structure. On the intake side, as shown in FIG. 9, the fan 8 changes its orientation and is attached to the air vent prevention member 9. In this case, the fan 8 abuts around the vent 15 of the air vent prevention member 9, The vent hole 15 of the ventilating prevention member 9 is formed to have a size larger than the opening of the intake port 13, and there is no problem.

  For reference, FIG. 10 shows a conventional structure. In the conventional structure of FIG. 10 without the air vent preventing member 9, the exhaust from the fan 8 leaks into the cabinet as indicated by the arrows.

  As described above, the ventilator for an electrical equipment storage box according to the present invention does not leak the exhaust from the fan 8 into the cabinet even when the direction of the fan 8 is changed between the exhaust side and the intake side. Moreover, it has excellent workability.

DESCRIPTION OF SYMBOLS 1 Wall surface of a cabinet 2 Ventilation port 3 Louver 4 Cylindrical part 5 Male screw 6 Louver attachment member 7 Fan attachment member 8 Fan 9 Venting prevention member 10 Hole 11 Screw hole 12 Seat part 13 for screw fixing Inlet 14 Exhaust 15 Exhaust 15 16 Peripheral part 17 Through-hole 18 Screw hole 19 Screw 20 Screw 21 Straight line part

Claims (6)

  In the ventilator for an electrical equipment storage box, comprising: a louver arranged outside the ventilation opening of the cabinet; a louver mounting member for fixing the louver from the inside of the cabinet; and a fan located at the opening of the louver. A ventilation device for an electrical equipment storage box, characterized in that an air vent preventing member that covers the entire ventilation opening is provided between a louver mounting member and a fan.   The ventilator for an electric equipment storage box according to claim 1, wherein the air vent preventing member is brought into contact with the wall surface of the cabinet over the entire periphery of the ventilation port.   The ventilating apparatus for an electric equipment storage box according to claim 2, wherein the ventilation port has a circular shape, and the exhaust port of the fan is different in size or shape from the intake port.   A fan mounting member for attaching the fan and the air vent prevention member is provided so as to be sandwiched between the louver and the louver mounting member, and the air vent prevention member is formed so as to cover the entire fan mounting member. The ventilator for an electric equipment storage box according to claim 3 characterized by the above-mentioned.   The ventilating prevention member is a box-shaped body, and includes a ventilation opening formed at a size larger than an opening of the exhaust port or the intake port of the fan, and a fan mounting portion to which the fan is attached. 4. A ventilator for an electrical equipment storage box.   The air vent member is formed with a through hole at one diagonal position for simultaneously attaching the air vent member and the fan to the fan mounting member at one diagonal position, and a screw hole for attaching the fan to the air vent member at the other diagonal. The ventilation device for an electric equipment storage box according to claim 5, wherein the ventilation device is formed at a position.

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