KR102659727B1 - Positive pressure electrical enclosures of switchboards, distribution boards, motor control panels, energy storage devices, communication equipment boxes, or solar junction boxes that increase lifespan by preventing harmful fine dust inflow and condensation on electrical control panels - Google Patents

Abstract

The present invention relates to a positive pressure electrical enclosure for preventing the inflow of fine dust and condensation by generating positive pressure inside the electrical enclosure. The positive pressure electrical enclosure of the switchboard, distribution panel, motor control panel, energy storage device, communication device box, or solar power connection box that prevents harmful fine dust from entering and condensing in the electrical control panel according to an embodiment of the present invention, thereby increasing the lifespan, is used for electrical equipment. An enclosure main body installed, an exhaust fan that exhausts the air inside the enclosure main body to an exhaust port of the enclosure main body, an electric control panel that controls the exhaust fan according to the temperature or pressure of the enclosure main body, and an electric control panel installed in the exhaust port, It is a positive pressure electric enclosure including an automatically open/close type exhaust cover device that opens and closes the exhaust port according to the exhaust pressure of the exhaust fan, wherein the automatically open/close type exhaust cover device is installed at the exhaust port and the internal air exhausted through the exhaust port is discharged to the outside. It includes a cover body in which an exhaust hole is formed, and an exhaust opening and closing membrane that overlaps the cover body and opens and closes the exhaust hole by elastically deforming and bending or unfolding to its initial shape according to the exhaust pressure of the exhaust hole, and the cover body opens and closes the exhaust hole. In a state in which the exhaust opening and closing membrane is blocked, the membrane installation surface of the cover body on which the exhaust opening and closing membrane is installed is tilted upward at a preset angle so that the exhaust opening and closing membrane adheres to the exhaust hole by its own weight and improves airtightness. is formed Therefore, the lifespan of the electric control panel can be increased by preventing the inflow of fine dust and condensation.

Description

Positive pressure electrical enclosures of switchboards, distribution boards, motor control panels, energy storage devices, communication equipment boxes, or solar power access boxes that prevent harmful fine dust from entering and condensing in electrical control panels, thereby increasing their lifespan. , motor control panels, energy storage devices, communication equipment boxes, or solar junction boxes that increase lifespan by preventing harmful fine dust inflow and condensation on electrical control panels}

The present invention is a positive pressure electrical enclosure for preventing the inflow of fine dust and condensation by generating positive pressure inside the electrical enclosure, and can be applied to a switchboard, distribution board, motor control panel, energy storage device, communication device box, or solar connection box. It's technology.

In general, a switchboard, distribution board, motor control panel, energy storage device, communication device box, or solar connection box accommodates electrical equipment inside the enclosure, so when foreign substances such as dust enter from the outside, the foreign substances may damage the electrical connection area. There is a problem of short circuit accidents occurring as it accumulates.

To solve this problem, the "positive pressure type clean switchboard" of Korean Patent Publication No. 10-2419457 (announced on July 11, 2022) was used to generate positive pressure inside the enclosure body to prevent dust, etc. from penetrating inside. It has been disclosed.

The conventional positive pressure type clean switchboard described above was able to prevent the infiltration of external foreign substances by supplying compressed air to the inside of the enclosure body through an air compressor to generate positive pressure.

However, in the conventional positive pressure clean switchboard, when the internal temperature of the enclosure body increases, an exhaust port is installed to exhaust the inside air to the outside, but if the exhaust port is not airtight, positive pressure inside the enclosure body cannot be provided. An electric damper was installed to open and close the exhaust port.

The electric damper installed in the conventional exhaust port closes the exhaust port when not exhausting, and opens the exhaust port only when exhausting is performed, thereby blocking the inflow of foreign substances through the exhaust port. Airtightness was maintained inside the hull.

However, the conventional positive pressure clean switchboard has a complex structure and high manufacturing costs because the electric damper operates electrically, and when a failure occurs in the electric damper, there is a problem in that exhaust cannot be performed even if the exhaust fan operates.

The present invention was created to solve the above-mentioned problems, and the problem to be solved by the present invention is to install an automatic opening and closing type exhaust cover device on the exhaust hole so that the exhaust hole is opened and closed by an exhaust opening and closing membrane that is elastically deformed by the exhaust pressure. By doing so, the exhaust hole is automatically opened and closed according to the exhaust pressure, making it easy to operate and having a simple structure, which not only reduces manufacturing costs, but also prevents the inflow of harmful fine dust and condensation into the electrical control panel, which can minimize the occurrence of malfunctions. The purpose is to provide a positive pressure electrical enclosure for a switchboard, distribution board, motor control panel, energy storage device, communication device box, or solar power connection box that prevents and increases the lifespan.

In addition, the exhaust fan operates according to the pressure difference or temperature difference between the inside and outside of the enclosure body, opening and closing the exhaust port through an automatically opening and closing exhaust cover device, thereby blocking the inflow of fine dust harmful to the electric control panel into the enclosure main body and preventing condensation. Switchgear, distribution panel, motor control panel, and energy storage that increase the lifespan by preventing the inflow of harmful fine dust and condensation on the electrical control panel, which can minimize short circuits or corrosion of the electrical control panel, which is particularly vulnerable to fine dust and moisture. The purpose is to provide a positive pressure electrical enclosure for a device, communication device box, or solar connection box.

In addition, as the installation surface of the cover body where the exhaust opening and closing membrane is installed is inclined to face the top, the exhaust opening and closing membrane adheres to the installation surface by its own weight, preventing the inflow of harmful fine dust and condensation into the electrical control panel, which can improve airtightness. The purpose is to provide a positive pressure electrical enclosure for a switchboard, distribution board, motor control panel, energy storage device, communication device box, or solar connection box that prevents and increases the lifespan.

In addition, by forming a membrane reinforcing protrusion that gives rigidity to the exhaust opening and closing membrane, the exhaust opening and closing membrane is bent to open the exhaust hole and quickly closes the exhaust hole, preventing the inflow of foreign substances and improving airtightness, which is harmful to the electric control panel. The purpose is to provide a positive pressure electrical enclosure for a switchboard, distribution panel, motor control panel, energy storage device, communication device box, or solar connection box that increases the lifespan by preventing fine dust inflow and condensation.

In addition, the object is to provide a positive pressure switchboard with an automatic opening and closing type exhaust cover device that can minimize the inflow of foreign substances into the exhaust hole by forming a membrane blocking protrusion inserted into the exhaust hole on the exhaust opening and closing membrane.

In addition, by suppressing the rotation of the exhaust opening and closing membrane in the cover body by the rotation inhibiting unit, the positive pressure device has an automatic opening and closing type exhaust cover device that can prevent the exhaust hole and the membrane blocking protrusion from being misaligned as the exhaust opening and closing membrane rotates, thereby reducing airtightness. The purpose is to provide a switchboard.

In addition, the automatically opening and closing type exhaust cover device provides a positive pressure distribution board having an automatically opening and closing type exhaust cover device in which a hood cover is installed on the outside of the cover body to prevent the inflow of foreign substances while the exhaust opening and closing membrane opens the exhaust hole. The purpose is to

A switchboard, distribution panel, motor control panel, energy storage device, communication device box, or solar power connection that increases the lifespan of the electrical control panel by preventing the inflow of harmful fine dust and condensation in the electric control panel according to the embodiment of the present invention to achieve the above-described task. The positive pressure electric enclosure of the ship includes a enclosure main body in which electrical equipment is installed, an exhaust fan that exhausts the air inside the enclosure main body to an exhaust port of the enclosure main body, an electric control panel that controls the exhaust fan according to the temperature or pressure of the enclosure main body, And a positive pressure electric enclosure including an automatically opening and closing exhaust cover device installed in the exhaust port and opening and closing the exhaust port according to the exhaust pressure of the exhaust fan, wherein the automatically opening and closing type exhaust cover device is installed in the exhaust port and exhausts exhaust through the exhaust port. It includes a cover body with an exhaust hole through which internal air is discharged to the outside, and an exhaust opening and closing membrane that overlaps the cover body and opens and closes the exhaust hole by elastically deforming and bending or unfolding to its initial shape according to the exhaust pressure of the exhaust hole, The cover body has an upper membrane installation surface on which the exhaust opening and closing membrane is installed so that the exhaust opening and closing membrane closes the exhaust hole by its own weight to improve airtightness while the exhaust hole is blocked by the exhaust opening and closing membrane. It is formed by tilting at a preset angle toward .

The exhaust opening/closing membrane may include a plurality of membrane reinforcing protrusions protruding radially from the center of the exhaust opening/closing membrane to quickly close the exhaust hole by increasing the elastic deformation force unfolded when the exhaust hole is opened. .

The exhaust opening/closing film may include a membrane blocking protrusion inserted from the exhaust opening/closing film to the inner circumference of the exhaust hole to prevent foreign substances from penetrating between the exhaust opening/closing film and the exhaust hole in a state in which the exhaust hole is sealed. there is.

The exhaust opening/closing film may include a rotation inhibiting portion that suppresses rotation of the exhaust opening/closing film in the cover body.

The automatic opening/closing type exhaust cover device may include a hood cover that covers the outside of the exhaust opening/closing membrane in the cover body to prevent foreign substances from penetrating into the exhaust hole while the exhaust opening/closing membrane opens the exhaust hole.

According to the present invention, the exhaust opening and closing membrane is elastically deformed according to the exhaust pressure by an automatically opening and closing exhaust cover device installed in the exhaust opening, thereby opening and closing the exhaust hole, thereby reducing the manufacturing cost and minimizing the occurrence of malfunctions with a relatively simple configuration. In addition, since it operates by exhaust pressure, power consumption can be reduced and the inconvenience of opening and closing the exhaust hole can be eliminated.

In addition, the operation of the exhaust fan is controlled according to the temperature or pressure of the enclosure body to block the inflow of fine dust and prevent condensation from occurring, thereby minimizing short circuits or corrosion of the electrical control panel, which is particularly vulnerable to fine dust or condensation. It can extend lifespan.

In addition, since the membrane installation surface on which the exhaust opening and closing membrane is installed in the cover body is inclined upward, the exhaust opening and closing membrane adheres to the membrane installation surface by its own weight, thereby improving airtightness and quickly closing the exhaust hole. can do.

In addition, the membrane reinforcement protrusions are formed radially on the exhaust opening and closing membrane, so that when the exhaust opening and closing membrane closes the exhaust hole, not only can it be closed quickly, but also preventing wrinkles in the exhaust opening and closing membrane, improving airtightness. .

In addition, since the membrane blocking protrusion is formed on the exhaust opening and closing membrane and is inserted into the exhaust hole, the inflow of foreign substances into the exhaust hole can be minimized.

In addition, the rotation of the exhaust opening and closing membrane in the cover body is suppressed by the rotation inhibiting portion, so that as the exhaust opening and closing membrane rotates, the exhaust hole and the membrane blocking protrusion are misaligned, thereby preventing the exhaust opening and closing membrane from sealing the exhaust hole.

In addition, a hood cover is installed on the cover body to block the inflow of foreign substances through the exhaust hole when the exhaust opening and closing membrane opens the exhaust hole.

Figure 1 shows a positive pressure electrical enclosure of a switchboard, distribution panel, motor control panel, energy storage device, communication device box, or solar power connection box that prevents the inflow of harmful fine dust and condensation into the electrical control panel according to an embodiment of the present invention, thereby increasing the lifespan. This is a side cross-sectional view schematically showing.
Figure 2 shows a positive pressure electrical enclosure of a switchboard, distribution panel, motor control panel, energy storage device, communication device box, or solar power connection box that increases the lifespan by preventing the inflow of harmful fine dust and condensation in the electrical control panel according to an embodiment of the present invention. This is a perspective view showing the automatically opening and closing exhaust cover device.
Figure 3 shows a positive pressure electrical enclosure of a switchboard, distribution board, motor control panel, energy storage device, communication device box, or solar power connection box that increases the lifespan by preventing the inflow of harmful fine dust and condensation in the electrical control panel according to an embodiment of the present invention. This is an exploded perspective view of the automatic opening and closing exhaust cover device.
Figure 4 shows a positive pressure electrical enclosure of a switchboard, distribution panel, motor control panel, energy storage device, communication device box, or solar power connection box, which increases the lifespan by preventing the inflow of harmful fine dust and condensation in the electrical control panel according to an embodiment of the present invention. This is a side cross-sectional view showing the automatically opening and closing type exhaust cover device, with the exhaust hole sealed.
Figure 5 shows a positive pressure electrical enclosure of a switchboard, distribution panel, motor control panel, energy storage device, communication device box, or solar power connection box that increases the lifespan by preventing the inflow of harmful fine dust and condensation in the electrical control panel according to an embodiment of the present invention. This is a side cross-sectional view showing the automatically opening and closing type exhaust cover device, with the exhaust hole open.

Hereinafter, embodiments of the present invention will be described with reference to the attached drawings.

As shown in Figure 1, a switchboard, distribution panel, motor control panel, energy storage device, communication device box, or solar power panel that increases the lifespan by preventing the inflow of harmful fine dust and condensation in the electrical control panel according to an embodiment of the present invention. The positive pressure electrical enclosure 200 of the junction box may include an enclosure body 210.

This enclosure main body 210 can accommodate and install electrical equipment 250 depending on the configuration of a switchboard, distribution board, motor control panel, energy storage device, communication device box, or solar connection box.

For example, the electrical equipment 250 may be a distribution equipment in the case of a switchboard, a distribution equipment in the case of a distribution board, a control equipment in the case of a motor control panel, and an energy storage equipment in the case of an energy storage device. In the case of a communication device box, it may be a communication facility, and in the case of a solar power junction box, it may be a connection facility.

The enclosure body 210 may be formed in the shape of a sealed box, and an entrance is formed in the enclosure body 210 for bringing in or taking out the electrical equipment 250 or for managers to enter and exit, and the entrance is provided for opening and closing the entrance. An open/close door may be installed.

A positive pressure mechanism 270 may be installed in the enclosure body 210 to apply positive pressure to the interior of the enclosure body 210. The positive pressure mechanism 270 compresses external air into the interior of the enclosure body 210. It can be implemented with a supplied air compressor.

In the enclosure body 210, when the internal temperature of the enclosure main body 210 is high, the internal pressure of the enclosure main body 210 is exhausted to the outside to lower the internal pressure of the enclosure main body 210, the internal temperature is lowered, or the internal and external temperatures are lowered. In order to reduce the difference and prevent condensation, an exhaust port 230 that exhausts air inside the enclosure body 210 may be formed through.

Of course, the exhaust port 230 may be formed in a position in the enclosure body 210 where an entrance is not formed, or may be formed in an opening or closing door.

As shown in Figures 2 to 4, a switchboard, distribution board, motor control panel, energy storage device, and communication device box, which increase the lifespan by preventing the inflow of harmful fine dust and condensation in the electric control panel according to an embodiment of the present invention, Alternatively, the positive pressure electric enclosure 200 of the solar power junction box may include an automatic opening and closing type exhaust cover device 100.

This automatically opening and closing type exhaust cover device 100 is installed in the exhaust port 230 and can automatically open and close the exhaust port 230 according to the pressure discharged through the exhaust port 230.

The automatically opening/closing type exhaust cover device 100 may include a cover body 110.

This cover body 110 may be installed on the outside of the exhaust port 230 in the distribution box to cover the exhaust port 230.

The cover body 110 may be located outside the enclosure body 210, and the cover body 110 may be formed to cover the outer surface of the exhaust port 230.

The cover body 110 may have an exhaust hole 111 formed in the main body through which exhaust discharged from the inside of the enclosure body 210 through the exhaust port 230 is exhausted, and the exhaust hole 111 is formed in the cover body 110. A plurality of pieces may be formed by penetrating.

A body flange portion 113 is formed around the cover body 110, with the exhaust port 230 overlapping with the cover body 110 located in the exhaust port 230 of the enclosure body 210, and the main body flange portion ( 113), a fastening hole through which the fixing bolt 140 penetrates the housing body 210 may be formed.

Meanwhile, the surface of the cover body 110 on which the exhaust hole 111 communicating with the exhaust port 230 is formed may be the membrane installation surface 110a on which the exhaust opening and closing membrane 120, which will be described below, is installed, and the membrane installation surface ( 110a) may have a flat surface to seal the exhaust hole 111 in a state in which the disc-shaped exhaust opening and closing membrane 120 overlaps.

The membrane installation surface 110a on which the exhaust opening and closing membrane 120 is installed in the cover body 110 is set at a preset angle (a) so that the membrane installation surface 110a faces the top with respect to the vertical plane, which is the circumferential surface of the enclosure body 210. It can be formed at an angle (see Figure 3).

Since the cover body 110 is installed so that the membrane installation surface 110a of the exhaust opening and closing membrane 120 faces the top, the exhaust opening and closing membrane 120 is closed when the exhaust hole 111 is closed. By covering the exhaust hole 111 by its own weight, it is possible to prevent foreign substances from flowing into the gap between the exhaust hole 111 and the exhaust opening/closing membrane 120 or external air from flowing into the interior of the enclosure body 210.

At this time, the membrane installation surface 110a may be formed at an angle ranging from 5° to 45° with respect to the vertical plane.

Here, when the membrane installation surface 110a is less than 5° with respect to the vertical plane, the exhaust opening/closing membrane 120 is in close contact with the membrane installation surface 110a due to its own weight, and the sealing force for sealing the exhaust hole 111 decreases, and the membrane installation surface ( If 110a) exceeds 45° with respect to the vertical plane, the exhaust pressure to open the exhaust opening/closing membrane 120 must be high, so the power consumption of the blower that forcibly exhausts the air increases.

A body fastening hole 115 to which a fixing bolt 140 for fixing the exhaust opening/closing membrane 120 is fastened may be formed through the center of the membrane installation surface 110a of the cover body 110.

The automatic opening/closing type exhaust cover device 100 may include an exhaust opening/closing membrane 120.

This exhaust opening/closing membrane 120 is installed overlapping the membrane installation surface 110a where the exhaust hole 111 of the cover body is formed, and is elastically deformed by the exhaust pressure discharged through the exhaust hole 111, thereby opening the exhaust hole 111. By opening and closing, it is possible to block foreign substances such as dust or rainwater from flowing into the interior of the enclosure body 210 through the exhaust hole 111.

The exhaust opening and closing film 120 may be formed in the shape of a disk. The exhaust opening and closing film 120 may be formed of a material that can be elastically deformed, such as silicon, rubber, urethane, synthetic resin, etc., but the exhaust opening and closing film 120 It is preferably made of silicon, which has excellent elastic deformability and airtightness and is easy to elastically deform.

Of course, the silicon used to form the exhaust opening/closing film 120 may be a silicon mixture mixed with silicon.

The exhaust opening and closing membrane 120 can be installed overlapping on the outside of the membrane installation surface 110a of the cover body, and the central portion of the exhaust opening and closing membrane 120 is fixedly installed in the center of the membrane installation surface 110a of the cover body 110. It can be, and a membrane fastening hole 121 through which a fixing bolt 140 for fixing the exhaust opening and closing membrane 120 to the cover body 110 is fastened may be formed through the center of the exhaust opening and closing membrane 120.

The exhaust opening/closing membrane 120 has its central portion fixed to the membrane installation surface 110a, and its peripheral portion is bent to the outside of the exhaust hole 111 by the exhaust pressure of the exhaust hole 111, forming the exhaust hole 111. When the exhaust pressure of the exhaust hole 111 becomes smaller than the elastic deformation force in the open and bent state, the exhaust hole 111 can be sealed by unfolding to its initial shape.

The exhaust opening and closing membrane 120 has a relatively thin thickness and has rigidity to improve the unfolding force of the exhaust opening and closing membrane 120 to return to its initial shape when bent by exhaust pressure. A plurality of membrane reinforcement protrusions 123 may be formed radially around the center of 120.

Here, the membrane reinforcing protrusion 123 reinforces the bending and unfolding rigidity of the exhaust opening and closing membrane 120 and prevents the normally thin exhaust opening and closing membrane 120 from sagging or becoming wrinkled. It can also perform the function of suppressing crying.

An edge reinforcing protrusion 129 may be formed to protrude on the edge of the exhaust opening/closing membrane 120.

The edge reinforcement protrusion 129 provides rigidity to the edge of the exhaust opening and closing film 120, so that the edge of the exhaust opening and closing film 120 is closed to the exhaust hole 111 in a state where the exhaust opening and closing film 120 closes the exhaust hole 111. ), it is possible to block the inflow of foreign substances such as rainwater or dust between the exhaust opening/closing membrane 120 and the exhaust hole 111.

The edge reinforcement protrusion 129 may be formed to protrude from a surface opposite to the surface of the exhaust opening/closing membrane 120 facing the membrane installation surface 110a.

The exhaust opening/closing membrane 120 may include a membrane blocking protrusion 125.

The membrane blocking protrusion 125 seals the space between the circumference of the exhaust hole 111 and the exhaust opening and closing membrane 120 while the exhaust hole 111 is sealed by the exhaust opening and closing membrane 120. ) It is possible to block foreign substances from entering through the edge gap and entering the interior of the enclosure body 210 through the exhaust hole 111.

The membrane blocking protrusion 125 may be formed at positions corresponding to the plurality of exhaust holes 111 on the side of the exhaust opening/closing membrane 120 facing the exhaust holes 111.

The membrane blocking protrusion 125 may be partially or entirely inserted into the inner circumference of the exhaust hole 111 to prevent foreign substances from penetrating between the exhaust opening/closing membrane 120 and the exhaust hole 111.

The membrane blocking protrusion 125 also performs the function of blocking foreign substances from entering the exhaust hole 111, but also applies a load to the surface of the exhaust opening and closing membrane 120 facing the exhaust hole 111. When the exhaust pressure disappears while the exhaust pressure (120) is bent to open the exhaust hole 111 by the exhaust pressure, a load may be applied to quickly elastically deform the exhaust opening/closing membrane 120 to its initial shape.

Meanwhile, the exhaust opening/closing membrane 120 cannot open the exhaust hole 111 due to the internal positive pressure of the enclosure body 210, and is elastically deformed and bent only when an exhaust pressure greater than the positive pressure acts to open the exhaust hole 111. The membranes (not shown) may be configured to overlap further, and the reinforcement membrane may be formed of the same material as the exhaust opening/closing membrane 120, or may be formed of a material that is elastically deformable and different from the exhaust opening/closing membrane 120.

The automatically opening and closing exhaust cover device 100 may include a blocking member 130.

The blocking member 130 may be formed in the form of a plate, and the blocking member 130 overlaps the outer surface of the exhaust opening and closing film 120 to open the exhaust between the blocking member 130 and the cover body 110. The exhaust opening and closing membrane 120 can be fixed to the cover body 110 by pressing and fixing the closing membrane 120.

The blocking member 130 may be formed of metal, and in the center of the blocking member 130, a fixing bolt 140 for fixing the exhaust opening and closing film 120 to the cover body 110 is passed through and fastened. The hole 131 may be formed through.

Here, the fixing bolt 140 is a fixing bolt in a state in which the exhaust opening and closing membrane 120 overlaps the membrane installation surface 110a of the cover body 110 and the blocking member 130 overlaps the outer surface of the exhaust opening and closing membrane 120. (140) penetrates the fixing hole 131 of the blocking member 130, the membrane fastening hole 121 of the exhaust opening and closing membrane 120, and the main body fastening hole 115 of the cover body 110. It can be fixed in a state where the exhaust opening and closing membrane 120 is positioned between the fixed body and the blocking member 130 by being screwed into the main body fastening hole 115.

On the other hand, when the exhaust opening and closing membrane 120 opens and closes the exhaust hole 111 by the exhaust pressure, the exhaust opening and closing membrane 120 is closed by the edge portion of the non-bending blocking member 130 of the exhaust opening and closing membrane 120. As fatigue builds up, it may be damaged at the portion where the edge of the blocking member 130 is located.

To prevent this, although not shown in the drawing, the edge portion of the blocking member 130 has an edge bending portion (not shown) that is bent in an arc shape in the direction in which the exhaust opening and closing membrane 120 is bent to open and close the exhaust hole 111. can be formed.

In another example, the blocking member 130 includes an exhaust opening and closing membrane to prevent permanent deformation by bending excessively and deforming beyond the limit of elastic deformation when the exhaust opening and closing membrane 120 opens the exhaust hole 111. A deformation limiting plate portion may be formed to suppress bending toward the side that opens the exhaust hole 111 of (120).

The deformation limiting plate portion is positioned to be spaced apart from the blocking member 130 at a preset interval in the direction of opening the exhaust hole 111 with respect to the exhaust opening and closing membrane 120, thereby opening the exhaust opening and closing membrane 111. ) is supported on the deformation limiting plate, thereby preventing damage due to excessive deformation of the exhaust opening/closing membrane 120.

The automatically opening/closing exhaust cover device 100 may include a rotation inhibitor.

This rotation inhibiting unit can prevent the exhaust opening/closing membrane 120 overlapping the membrane installation surface 110a of the cover body 110 from rotating in the cover body 110.

For example, the exhaust opening and closing membrane 120 is fixed by the fixing bolt 140 fastened to the central part of the cover body 110, so the exhaust opening and closing membrane 120 closes the exhaust hole 111 by the exhaust pressure. When opening and closing, the exhaust opening and closing membrane 120 may rotate in the cover body 110 due to vibration or movement.

When the exhaust opening and closing membrane 120 rotates in the cover body 110, the membrane blocking protrusion 125 formed at a position corresponding to the exhaust hole 111 cannot be inserted around the exhaust hole 111, and the cover body ( Even if the exhaust opening/closing film 120 closes the exhaust hole 111 by covering the outer surface of the 110, the exhaust opening/closing film 120 is spaced apart from the exhaust hole 111 and cannot close the exhaust hole 111.

Accordingly, the rotation inhibitor can prevent the exhaust hole 111 and the membrane blocking protrusion 125 from being misaligned as the exhaust opening/closing membrane 120 rotates in the cover body 110.

The rotation inhibiting unit can inhibit rotation of the exhaust opening/closing membrane 120 in the cover body 110 by fastening the rotation inhibiting bolt 145 at an eccentric position in the central portion where the fixing bolt 140 is fastened.

As in the embodiment, the rotation inhibiting part has a main body inhibiting hole 117 formed through the cover body 110 at an eccentric position of the main body fastening hole 115, and a main body inhibiting hole 117 in the exhaust opening and closing membrane 120. A membrane suppression hole 127 is formed through and through the blocking member 130, and a fixation suppression hole 137 is formed through through the blocking member 130 at a location corresponding to the membrane suppression hole 127, thereby maintaining an eccentric position of the fixing bolt 140. The rotation suppression bolt 145 penetrates the fixed suppression hole 137, the membrane suppression hole 127, and the body suppression hole 117 and is fastened to the body suppression hole 117, thereby forming the cover body 110. The rotation of the exhaust opening/closing membrane 120 can be suppressed.

In another example, the rotation inhibiting unit is installed at an eccentric position from the fixing bolt 140 on either the exhaust opening/closing membrane 120 or the blocking member 130 and the cover body 110 located on both sides of the exhaust opening/closing membrane 120. A restraining protrusion is formed to protrude, and on the other, a suppressing protrusion is formed in a protrusion groove into which the suppressing protrusion is inserted. The suppressing protrusion is inserted into the protrusion groove while the cover body 110, the exhaust opening/closing membrane 120, and the blocking member 130 are overlapped. It may be combined in a folded form to suppress rotation of the exhaust opening/closing membrane 120 in the cover body 110.

The automatically opening and closing exhaust cover device 100 may include a hood cover 150.

This hood cover 150 covers the outer surface of the cover body 110 and blocks the inflow of foreign substances such as rainwater or dust into the exhaust hole 111 when the exhaust opening/closing membrane 120 opens the exhaust hole 111. You can.

The hood cover 150 may be combined in a way that the perimeter of the hood cover 150 is fitted around the cover body 110 to surround the outside of the cover body 110, and the hood cover 150 and the cover body ( A membrane movable space in which the exhaust opening and closing membrane 120 is bent to open and close the exhaust hole 111 may be formed between the exhaust pressure.

On the other hand, the hood cover 150 may be formed with a hood hole 151 through which exhaust exhaust through the exhaust hole 111 is discharged to the outside, and the upper part of the hood hole 151 is covered. A hood cover portion 153 may be formed to block external foreign substances from entering the interior of the hood cover 150 through the hood hole 151.

The hood cover portion 153 covers the upper part of the hood hole 151 and may perform the function of guiding exhaust discharged through the hood hole 151 to be discharged to the lower part of the hood hole 151.

A plurality of hood holes 151 may be formed in the hood cover 150, and a hood cover portion may be formed in each hood hole 151.

A fastening bolt for fastening and fastening the cover body 110 to the enclosure body 210 passes through the portion of the hood cover 150 that overlaps the flange portion 113 of the cover body 110. The hood cover 150 may be coupled to the housing body 210 while being coupled to the hood cover 110 .

Of course, the hood cover 150 and the cover body 110 are formed with a fitting joint that is coupled to the fitting structure, so that only one of the hood cover 150 and the cover body 110 is coupled to the enclosure body 210 in a state where the hood cover 150 and the cover body 110 are fitted with each other. The cover body 110 and the hood cover 150 may also be coupled to the enclosure body 210 in form.

On the other hand, the hood cover 150, like another example of the blocking member 130, is an exhaust opening and closing membrane that is bent to open the exhaust hole 111 on the inner surface of the hood cover 150 when the deformation limiting plate is not formed. 120) is supported on the inner surface of the hood cover 150, so that the hood cover 150 can perform the function of a deformation limiting plate portion that prevents damage by suppressing excessive bending of the exhaust opening and closing membrane 120 like a deformation limiting plate portion. there is.

The automatically opening and closing exhaust cover device 100 may include a body seal 160.

This body seal 160 can airtightly seal between the cover body 110 and the enclosure 210 or between the enclosure 120 and the hood cover 150. The main body seal 160 may be installed along the perimeter of the flange part 113 on the surface of the flange part 113 facing the housing 210 in the cover main body 110, or along the edge of the hood cover 150. You can.

Of course, on the flange part 113 of the cover body 110 or the edge of the hood cover 150, a seal groove into which the main body seal 160 is inserted runs around the inner circumference of the flange part 113 from the inside of the flange part 113. It can be installed accordingly.

The body seal 160 is made of a material that has elasticity and airtightness so that it can be compressed and fixed when the hood cover 150 or cover body 110 is fixed in close contact with the housing 210, such as rubber, urethane, or silicone. can be formed.

The automatically opening/closing type exhaust cover device 100 may include an exhaust fan 170.

This exhaust fan 170 is installed in the exhaust port 230 to forcibly exhaust the air inside the enclosure body 210 to the outside through the exhaust port 230.

The exhaust fan 170 may be rotated by a motor, and a fan hood may be installed around the exhaust fan 170 to prevent safety accidents due to rotation of the exhaust fan 170.

The exhaust fan 170 is coupled together inside the enclosure body 210 by a fastening bolt for fastening the hood cover 150 and the cover body 110 through the enclosure body 210, and has an exhaust port 230. can be installed in

When the internal temperature of the enclosure main body 210 is higher than a preset temperature, the exhaust fan 170 is forcibly operated to forcibly exhaust the air inside the enclosure main body 210 to the outside of the enclosure main body 210. The occurrence of condensation can be prevented by lowering the internal pressure of the main body 210, lowering the internal temperature of the enclosure main body 210, or reducing the temperature difference between the inside and outside of the enclosure main body 210.

As the exhaust fan 170 forcibly exhausts the air inside the enclosure body 210, the exhaust opening/closing membrane 120 can provide exhaust pressure to open the exhaust hole 111.

For example, when the exhaust fan 170 operates as the internal temperature of the enclosure body 210 increases, the air in the enclosure main body 210 is exhausted through the exhaust hole 111 through the exhaust port 230, thereby forming the exhaust hole 111. When the exhaust opening and closing membrane 120 that seals the air is pressed and an exhaust pressure sufficient to elastically deform the exhaust opening and closing membrane 120 is applied, the exhaust opening and closing membrane 120 moves in the opposite direction to the position of the exhaust hole 111. As it bends, the exhaust hole 111 opens and exhausts air to the outside of the enclosure body 210.

The exhaust fan 170 can be controlled by an electric control panel, which will be described below.

Positive pressure electrical enclosure (200) of a switchboard, distribution panel, motor control panel, energy storage device, communication device box, or solar power connection box that increases the lifespan by preventing the inflow of harmful fine dust and condensation in the electric control panel according to an embodiment of the present invention. may include an electrical control panel (not shown).

This electric control panel can be accommodated inside the enclosure body 210 or installed on the side wall of the enclosure to control the electric equipment 250. The electric control panel can control not only the electric equipment 250 but also the positive pressure mechanism 220. or the operation of the exhaust fan 170 can be controlled.

The electrical control panel may be configured to control the electrical equipment 250, the positive pressure mechanism 220, and the exhaust fan 170 together in one panel, or to control each configuration separately in a plurality of panels, for example. For example, the positive pressure mechanism 220 and the exhaust fan 170 can be controlled simultaneously from one electrical control panel, and one panel may be configured to control both components simultaneously.

In the embodiment, only the content of how the electric control panel controls the exhaust fan 170 will be described.

The electric control panel can control the operation of the exhaust fan 170 according to the pressure or temperature of the enclosure body 210.

Additionally, the electric control panel may include a temperature measurement sensor and a pressure measurement sensor.

The temperature measurement sensor can measure the temperature inside and outside the enclosure body 210, and the pressure measurement sensor can measure the pressure inside and outside the enclosure main body 210.

The temperature measurement sensor and the pressure measurement sensor are not only electrically connected to the electric control panel, but are also installed inside and outside the enclosure body 210 to measure the temperature and pressure inside and outside the enclosure body 210, as well as a temperature measurement sensor and The pressure measurement sensor may be integrated into one sensor.

The electric control panel can control the operation of the exhaust fan 170 by receiving temperature information measured by the temperature measurement sensor and pressure information measured by the pressure measurement sensor.

For example, when the internal temperature of the enclosure body 210 occurs above a preset temperature among the temperature information measured by the temperature measurement sensor, the electric control panel operates the exhaust fan 170 to reduce the temperature of the enclosure main body 210. The internal temperature of the enclosure body 210 can be lowered by exhausting the air to the outside.

As another example, especially in winter, when the indoor temperature and outdoor temperature measured by the temperature measurement sensor are outside the preset range, the electrical control panel operates the exhaust fan 170 to reduce the temperature difference between the inside and outside of the enclosure body 210, By preventing condensation from occurring inside (210), corrosion due to condensation on the electrical control panel, which is particularly vulnerable to moisture, can be minimized and the lifespan can be extended.

As another example, the electric control panel further includes a humidity detection sensor, so that when the internal humidity of the enclosure is higher than the preset humidity and the pressure measured by the pressure measurement sensor exceeds the preset pressure range than the external atmospheric pressure, the exhaust fan 170 By operating to lower the pressure of the enclosure body 210, the dew point can be lowered to prevent condensation from occurring.

As another example, the electric control panel includes an entry/exit detection sensor that detects a person entering the interior of the main body, and turns on the exhaust fan 170 when the entry detection sensor detects a person entering the interior of the enclosure body 210. By lowering the pressure inside the enclosure body 210 by operating it, it is possible to prevent safety accidents in which the entrance door is difficult to open due to the pressure difference between the inside and outside of the enclosure body 210, or the entrance door is opened and closed rapidly.

Let us explain the actions and effects between each component described above.

Positive pressure electrical enclosure (200) of a switchboard, distribution panel, motor control panel, energy storage device, communication device box, or solar power connection box that increases the lifespan by preventing the inflow of harmful fine dust and condensation in the electric control panel according to an embodiment of the present invention. A power distribution facility 250 is installed inside the enclosure main body 210, and a positive pressure mechanism 270 is installed in the enclosure main body 210 to generate positive pressure inside the enclosure main body 210.

In addition, the enclosure body 210 is formed with a temperature measurement sensor for measuring the internal temperature of the enclosure main body 210 and an exhaust port 230 for lowering the temperature by exhausting the inside of the enclosure main body 210 to the outside, and an exhaust port ( 230), an automatic open/close exhaust cover device 100 is installed to automatically open and close the exhaust port 230 according to the exhaust pressure.

The automatically opening and closing type exhaust cover device 100 has a cover body 110 installed on the outer surface of the enclosure body 210 where the exhaust port 230 is formed, and the cover body 110 has an exhaust hole through which exhaust is discharged through the exhaust port 230. (111) is formed through, and a plurality of exhaust holes 111 are formed through the membrane installation surface (110a).

The membrane installation surface 110a may be formed by tilting the lower portion toward the outside of the enclosure body 210 at a preset angle (a) with the upper portion centered on the vertical surface of the enclosure body 210.

Meanwhile, the central portion of the exhaust opening and closing membrane 120, which opens and closes the exhaust hole 111, is fixedly installed on the membrane installation surface 110a of the cover body 110. .

At the center of the membrane installation surface 110a of the cover body 110, a body fastening hole 115 is formed, into which a fixing bolt 140 for fixing the exhaust opening and closing membrane 120 is fastened. A membrane fastening hole 121 through which the fixing bolt 140 penetrates is also formed in the center.

The exhaust opening and closing membrane 120 is made of an elastically deformable material that can be flexibly bent, and the exhaust opening and closing membrane 120 is elastically deformed and the exhaust opening and closing membrane 120 is bent to open the exhaust hole 111. When the pressure disappears, the bent exhaust opening and closing membrane 120 is easily unfolded and the membrane reinforcing protrusion 123, which provides rigidity to the exhaust opening and closing membrane 120, is located at the center of the exhaust opening and closing membrane 120 so as to close the exhaust hole 111. A plurality of radial protrusions may be formed from the center.

Here, the membrane reinforcement protrusion 123 may be formed on a side of the exhaust opening/closing membrane 120 opposite to the side facing the exhaust hole 111.

At the edge of the exhaust opening and closing membrane 120, there is an edge reinforcing protrusion 129 that provides rigidity to the rim so that the rim of the exhaust opening and closing membrane 120 can be in close contact with the membrane installation surface 110a as a whole. It may be formed protruding along.

In addition, at positions corresponding to the exhaust holes 111 in the exhaust opening and closing membrane 120, there are corresponding exhaust holes 111 to prevent foreign substances from penetrating between the edge of the exhaust opening and closing membrane 120 and the exhaust holes 111. A membrane blocking protrusion 125 inserted into the inner circumference of each exhaust hole 111 may be formed at the position.

Here, the membrane blocking protrusion 125 may function to block the inflow of foreign substances into the inner circumference of the exhaust hole 111 and at the same time apply a load to the exhaust opening and closing membrane 120 to cover and seal the exhaust hole 111. there is.

On the outer surface of the exhaust opening and closing membrane 120, a blocking member 130 for fixing the exhaust opening and closing membrane 120 to the cover body 110 is overlapped in the center of the exhaust opening and closing membrane 120, and the blocking member 130 A fixing hole 131 is formed through the fixing bolt 140 and fastened thereto.

The blocking member 130, the exhaust opening and closing membrane 120, and the cover body 110 have a shape in which the fixing bolt 140 penetrates the fixed fastening hole 131, the membrane fastening hole 121, and the body fastening hole 115. They are fixed in an overlapping state by being inserted into the main body fastening hole 115.

In addition, at the eccentric position where the fixing bolt 140 is fastened, a rotation inhibiting part is formed to suppress the rotation of the exhaust opening and closing membrane 120 in the cover body 110, and the rotation inhibiting part is a fixed fastening hole of the blocking member 130. A fixed suppression hole 137 is formed through and formed at an eccentric position in (131), and a membrane suppression hole 127 is formed through the blocking member 130 corresponding to the fixed suppression hole 137. A main body suppression hole 117 is formed through the corresponding cover body 110, so that the rotation suppression bolt 145 penetrates the fixed suppression hole 137, the membrane suppression hole 127, and the body suppression hole 117 to prevent the main body from being suppressed. It is composed of a form concluded in the provision (117).

A hood cover 150 is installed on the outside of the cover body 110 to block the inflow of foreign substances into the exhaust hole 111 while the exhaust opening and closing film 120 is open, and the hood cover ( 150) is formed with a plurality of hood holes 151 that exhaust the exhaust discharged through the exhaust hole 111 to the outside, and the hood hole 151 prevents the inflow of foreign substances from the top through the hood hole 151. A hood cover portion 153 for blocking is formed to protrude from the top of each hood hole 151.

Meanwhile, an exhaust fan 170 rotating by a motor may be installed in the exhaust port 230 inside the enclosure body 210, and the exhaust fan 170 is installed between the exhaust port 230 of the enclosure main body 210. It can be combined with the cover body 110.

In addition, the exhaust fan 170 can be controlled by an electric control panel that controls the temperature or pressure of the enclosure body 210.

A positive pressure electrical enclosure of a switchboard, distribution panel, motor control panel, energy storage device, communication device box, or solar power connection box that prevents the inflow of harmful fine dust and condensation in the electrical control panel according to the embodiment of the present invention configured as described above, thereby increasing the lifespan. (200) is in the form of sealing the exhaust hole 111 without elastic deformation of the exhaust opening/closing membrane 120 when positive pressure is generated inside the enclosure body 210 by the operation of the positive pressure mechanism 270, and the exhaust port 230 ) is blocked.

And, for example, when the internal temperature of the enclosure body 210 exceeds a preset temperature, the electric control panel controls the exhaust fan 170 to operate the exhaust fan 170.

When the exhaust fan 170 operates, the air in the enclosure body 210 is discharged to the exhaust hole 111 through the exhaust port 230, and the exhaust pressure closes the exhaust opening and closing membrane 120 that seals the exhaust hole 111. When pressurized, the exhaust opening/closing membrane 120 is elastically deformed and bent to the outside of the exhaust hole 111, thereby exhausting the air through the exhaust hole 111.

The exhaust discharged through the exhaust hole 111 is exhausted to the outside through the hood hole 151 of the hood cover 150.

At this time, since the top of the hood hole 151 is covered by the hood cover 153, it is guided to the lower part of the hood hole 151 and is exhausted through the lower part of the hood cover 153.

Meanwhile, when the temperature of the enclosure body 210 decreases due to the operation of the exhaust fan 170, the exhaust fan 170 stops operating, and when the operation of the exhaust fan 170 stops, the exhaust hole 111 is opened. As the exhaust pressure discharged through the air decreases, the exhaust opening/closing membrane 120, which is bent to open the exhaust hole 111, returns to its initial shape.

At this time, the exhaust opening and closing membrane 120 not only quickly unfolds and returns to its initial shape due to the rigidity of the membrane reinforcement protrusion 123, but also prevents the occurrence of wrinkles in the exhaust opening and closing membrane 120, thereby improving airtightness. .

In addition, an edge reinforcing protrusion 129 is formed on the edge of the exhaust opening and closing film 120 to prevent wrinkles from occurring on the edge of the exhaust opening and closing film 120 when the exhaust opening and closing film 120 closes the exhaust hole 111. By preventing the exhaust opening and closing membrane 120 from coming into close contact with the membrane installation surface 110a, it is possible to prevent foreign substances from entering between the exhaust opening and closing membrane 120 and the membrane installation surface 110a.

In addition, the exhaust opening/closing film 120 is formed with a membrane blocking protrusion 125 inserted into the exhaust hole 111, so that even if the exhaust opening/closing film 120 is partially spaced from the exhaust hole 111, foreign substances are not present in the exhaust hole 111. Not only can the inflow of air be blocked, but the exhaust opening/closing membrane 120 can quickly seal the exhaust hole 111 by applying a load to the exhaust opening/closing membrane 120 by the membrane blocking protrusion 125.

In addition, even if the exhaust opening/closing membrane 120 opens and closes the exhaust hole 111 by the exhaust pressure, the rotation of the exhaust opening/closing membrane 120 is suppressed by the rotation inhibiting unit, and the rotation of the exhaust opening/closing membrane 120 causes the exhaust hole 111 to open and close. It is possible to prevent the exhaust opening/closing membrane 120 from being separated from the exhaust hole 111 due to the displacement of the membrane blocking protrusion 125 at (111).

Meanwhile, the hood cover 150 is overlaid on the outside of the cover body 110, and the exhaust opening/closing membrane 120 allows foreign matter such as rainwater or dust to be removed through the open exhaust hole 111 while the exhaust opening 111 is open. This inflow can be blocked.

When the switchboard 200 is a positive pressure switchboard in which the internal pressure of the enclosure body 210 is higher than atmospheric pressure, the exhaust opening/closing membrane 120 does not open the exhaust hole 111 to the internal positive pressure of the enclosure main body 210. To prevent this, the internal positive pressure of the enclosure body 210 may have an elastic deformation force that does not bend.

Therefore, the positive pressure electrical enclosure of the switchboard, distribution board, motor control panel, energy storage device, communication device box, or solar connection box that increases the lifespan by preventing the inflow of harmful fine dust and condensation in the electric control panel according to the embodiment of the present invention ( 200, when the exhaust pressure of the exhaust fan 170 increases by the automatically opening and closing exhaust cover device 100 installed on the exhaust port 230, the exhaust opening and closing membrane 120 opens the exhaust hole 111, and the exhaust fan 170 When the operation of ) is stopped, the exhaust opening and closing membrane 120 is automatically sealed by its own weight, thereby eliminating the inconvenience caused by the opening and closing operation of the exhaust port 230. In addition, the exhaust opening and closing membrane 120 is elastically deformed to exhaust the exhaust air. Because the hole 111 is opened and closed, the manufacturing cost can be reduced because the structure is relatively simple, and power consumption can be reduced by opening and closing the exhaust hole 111 by the exhaust pressure.

In addition, the operation of the exhaust fan 170 is controlled according to the temperature or pressure of the enclosure body 210 to block the inflow of fine dust and prevent condensation from occurring, thereby preventing short circuits in the electrical control panel, which is particularly vulnerable to fine dust or condensation. Alternatively, the lifespan can be extended by minimizing corrosion.

In addition, the membrane installation surface 110a on which the exhaust opening and closing membrane 120 is installed in the cover body 110 is installed inclined so as to face upward, thereby improving the closing property of the exhaust opening and closing membrane 120 due to its own weight.

In addition, a plurality of membrane reinforcement protrusions 123 are formed radially on the exhaust opening and closing membrane 120 to minimize the occurrence of wrinkles in the exhaust opening and closing membrane 120 and to quickly unfold the exhaust opening and closing membrane 120. By imparting rigidity to 120), the exhaust hole 111 can be quickly sealed.

In addition, a rotation suppressor is installed on the exhaust opening and closing membrane 120, so that the exhaust hole 111 and the membrane blocking protrusion 125 are misaligned as the exhaust opening and closing membrane 120 rotates, causing the exhaust opening and closing membrane 120 and the exhaust hole ( 111) can prevent the gap between them from widening.

In addition, the edge reinforcement protrusion 129 is formed to protrude on the edge of the exhaust opening and closing film 120, so that the edge of the exhaust opening and closing film 120 is supported in close contact with the membrane installation surface 110a, so that the edge of the exhaust opening and closing film 120 is supported. It is possible to prevent a decrease in airtightness inside the enclosure body 210 due to wrinkles.

In addition, the hood cover 150 is installed on the cover body 110, so that the exhaust opening/closing membrane 120 can block the inflow of foreign substances into the exhaust hole 111 while the exhaust hole 111 is open.

In addition, an edge bending portion is formed on the blocking member 130 that supports the exhaust opening and closing membrane 120 and is coupled to the cover body 110, so that the exhaust opening and closing membrane 120 acts as a blocking member when opening and closing the exhaust hole 111. As the exhaust opening and closing membrane 120 is supported on the edge of 130, damage due to fatigue accumulation can be prevented.

Although the embodiments of the present invention have been described above, the scope of the rights of the present invention is not limited thereto, and the embodiments of the present invention can be easily modified by those skilled in the art in the technical field to which the present invention belongs and are recognized as equivalent. Includes all changes and modifications to the extent permitted.

100: Automatic opening and closing exhaust cover device 110: Cover body
111: exhaust hole 113: flange part
115: Body fastening hole ` 117: Body restraining hole
120: exhaust opening/closing membrane 121: membrane fastening hole
123: Membrane reinforcement protrusion 125: Membrane blocking protrusion
127: Membrane suppression hole 129: Edge reinforcement protrusion
130: Blocking member 131: Fixed fastening hole
137: Fixed suppressor 140: Fixed bolt
145: Rotation inhibition bolt 150: Hood cover
151: Hood hole 153: Hood cover part
160: body seal 170: exhaust fan
200: Positive pressure electrical enclosure 210: Enclosure body
220: positive pressure device 230: exhaust port
250: Electrical equipment

Claims (5)

An enclosure main body containing electrical equipment housed therein and an electric control panel for controlling the electric equipment, an exhaust fan for exhausting air inside the enclosure main body to an exhaust port of the enclosure main body, and an exhaust fan installed in the exhaust port. A positive pressure electric enclosure including an automatically opening and closing exhaust cover device that opens and closes the exhaust port according to the exhaust pressure,
The automatic opening and closing exhaust cover device is
A cover body installed in the exhaust port and having an exhaust hole through which internal air exhausted through the exhaust port is discharged to the outside, and
It includes an exhaust opening and closing membrane that overlaps the cover body and opens and closes the exhaust hole by elastically deforming and bending or unfolding to its initial shape according to the exhaust pressure of the exhaust hole,
The cover body is
In a state in which the exhaust hole is blocked by the exhaust opening and closing membrane, the membrane installation surface of the cover body on which the exhaust opening and closing membrane is installed is directed upward in advance so that the exhaust opening and closing membrane closely closes the exhaust hole by its own weight to improve airtightness. It is formed by tilting at a set angle,
The exhaust opening/closing membrane includes a plurality of membrane reinforcing protrusions protruding radially from the center of the exhaust opening/closing membrane to quickly close the exhaust hole by increasing the elastic deformation force unfolded when the exhaust hole is opened. A positive pressure electrical enclosure for a switchboard, distribution panel, motor control panel, energy storage device, communication device box, or solar power connection box that increases the lifespan of the electrical control panel by preventing the inflow of harmful fine dust and condensation. delete According to paragraph 1,
The exhaust opening and closing membrane is
An electric control comprising a membrane blocking protrusion inserted from the exhaust opening/closing film to the inner circumference of the exhaust hole to prevent foreign substances from penetrating between the exhaust opening/closing film and the exhaust hole while the exhaust hole is sealed. A positive pressure electrical enclosure for a switchboard, distribution panel, motor control panel, energy storage device, communication device box, or solar connection box that prevents harmful fine dust from entering the panel and condensation, thereby increasing the lifespan. According to paragraph 1,
The exhaust opening and closing membrane is
A switchboard, distribution panel, motor control panel, and energy storage device that increases the lifespan by preventing the inflow of harmful fine dust and condensation in the electric control panel, which includes a rotation inhibiting part that suppresses the rotation of the exhaust opening and closing membrane in the cover body; Positive pressure electrical enclosure of communication equipment box or solar power junction box. According to paragraph 1,
The automatic opening and closing exhaust cover device is
The exhaust opening and closing membrane includes a hood cover that covers the outside of the exhaust opening and closing membrane in the cover body to prevent foreign substances from penetrating into the exhaust hole while the exhaust hole is open. A positive pressure electrical enclosure for a switchboard, distribution panel, motor control panel, energy storage device, communication device box, or solar connection box that prevents inflow and condensation and increases the lifespan.

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