KR101252417B1 - Emp protecting ventilation opening having cut off frequency multi step changeable function - Google Patents

Abstract

PURPOSE: An EMP(Electromagnetic Pulse) defense ventilation unit is provided to replace a mesh by an electromagnetic wave to cut off, and to modify a cut-off frequency in a multi-phase. CONSTITUTION: A plurality of ventilation pipes(100) is accommodated in a body(300), and is integrally weld-connected to a shield room. A mesh(200) is detachably attached to an open side(310) of the body, and a fixing unit(320) for firmly fixing a mesh is installed. A hole(330) is formed around a slit(400) of the body to accommodate a bolt(410), and an opening(430) for penetrating a bolt is formed in a cover(420). By use of the bolt structure, blocking of the slit on the body is possible while maintaining sealing through the cover.

Description

EMP PROTECTING VENTILATION OPENING HAVING CUT OFF FREQUENCY MULTI STEP CHANGEABLE FUNCTION}

The present invention relates to a ventilator structure for shielding electromagnetic waves against information security and strong pulses, and more particularly, to a ventilator structure for shielding electromagnetic waves including a replaceable mesh, which can replace a mesh according to an electromagnetic wave to be blocked.

Electromagnetic waves are waves generated by the interaction between electricity and magnetism. Naturally, electromagnetic waves occur naturally in all electromagnetic products such as telecommunications devices from electric household appliances to civilization.

Electromagnetic Pulse (EMP) is a powerful and instantaneous electromagnetic shock wave that can physically destroy electronic equipment. There are high-intensity electromagnetic wave pulses (HEMP) caused by nuclear explosions over 40km above the ground, and high-power electromagnetic waves (HPEM) that intentionally cause electromagnetic interference on the ground.

Electronic devices exposed to EMPs can be severely damaged by the effects of large energy pulses, leading to malfunctions or breakdowns. Measures to protect the EMPs from unexpected and unexpected external effects on electronic devices that function as important tasks. It is an urgent reality to do.

In order to prevent communication equipment and electronic equipment used by military units, national institutions, various industrial research institutes, hospitals, etc. from being disturbed or malfunctioned by external undesired electromagnetic waves, electromagnetic shielding rooms are installed and operated. It is the main equipment that stores and manages all the communication electronic equipments in the battlefield, the state, night, and all-weather weather conditions that change rapidly in (iii).

Therefore, the electromagnetic shielding room should be able to completely protect all communication and electronic equipment installed therein from being disturbed or malfunctioned from the external unnecessary electromagnetic waves.

Ventilation openings must be installed in the electromagnetic shielding room, and the ventilation openings must have a special structure to prevent electromagnetic waves from entering through the ventilation openings as point of entry (POE).

Recently, a number of hexagonal tubes are used in the configuration of ventilation holes for shielding electromagnetic waves, and the size and length of each cell of the hexagonal tubes are based on 18 GHz for civilian use and 40 GHz for military use. It is used as a capacitive shielding capacity based on the upper limit, or a number of square tubes are used, and the size and length of each cell is configured as a capacitive shielding capacitive based on the 400MHz standard. It was used.

However, the structure of the prior art had to adjust the size and length of each tube to block the electromagnetic wave of the desired size. Therefore, in order to prevent the electromagnetic wave of very high frequency, the cell size was very small and the tube length was very long. This costs a lot of manufacturing costs, there was a problem that the inner space of the shielding room should be secured according to the length of the tube.

According to an embodiment of the present invention, there is disclosed an electromagnetic shielding ventilation opening structure including a replaceable mesh, the electromagnetic shielding ventilation opening structure including such a replaceable mesh is a cube-shaped body with a pair of faces facing open; A ventilation pipe in which a plurality of polygonal tubes are joined to each other in a lattice shape along a length direction between the surfaces of the pair of open surfaces of the main body; And a mesh mesh having a constant size polygonal grid installed in the vent pipe, wherein the vent pipes are accommodated in the main body and are welded to the shielding chamber integrally with the main body, the main body of the main body being One or more covers for opening and closing the one or more slits and slits formed in a direction perpendicular to the longitudinal axis of the ventilation pipes on any one of the unopened sides, the opening and closing of the cover to replace the mesh through the slit It is possible.

According to a further embodiment of the present invention, there is disclosed an electromagnetic shielding ventilation opening structure including a replaceable mesh, the electromagnetic shielding ventilation opening structure including such a replaceable mesh is a cube-shaped body with an open pair of faces facing each other; A ventilation pipe in which a plurality of polygonal tubes are joined to each other in a lattice shape along a length direction between the surfaces of the pair of open surfaces of the main body; And a mesh having a polygonal grid shape having a constant size, wherein the ventilation pipes are accommodated in the main body and welded to the shielding chamber integrally with the main body, and not connected to the shielding chamber of the main body. The mesh is detachably attached to the side, whereby the mesh can be replaced according to the frequency of the electromagnetic wave to be shielded.

According to still another embodiment of the present invention, an electromagnetic shielding ventilating structure including a replaceable mesh is disclosed. At least two air intake modules in which a plurality of polygonal tubes are bonded to each other in a lattice shape, each of the air intake modules being fitted with airtightness in the size of the open surface of the main body; And at least one mesh having a polygonal grid shape having a predetermined size, the mesh being able to be fitted while being airtight in the size of the open surface of the main body, any one of the main bodies being welded to the shielded room, The ventilation pipe module and the mesh may be inserted into the main body in order, and the mesh may be replaced according to the frequency of electromagnetic waves to be shielded.

In this case, grooves are formed on the inner surface of the main body in the longitudinal direction of both opening surfaces, and the projections are formed on the upper, lower, left, and right sides of the mesh, and the protrusions of the mesh are formed on the upper, lower, left, and right sides of the inner surface of the main body. It is movable along the groove formed in the, the mesh can be inserted into the body.

1 is a perspective view of a ventilation structure for shielding electromagnetic waves consisting of a ventilation pipe including a mesh.
Figure 2 is a side cross-sectional view of the appearance of the removable mesh.
3 and 4 are views of one embodiment of the electromagnetic shielding ventilating structure including a replaceable mesh.
5 and 6 are views of additional embodiments of electromagnetic shielding ventilating structure including replaceable mesh.
7A-7C illustrate the welding process in order when welding the vents.
8 shows a final state of a state in which a body including an air duct is welded in a shielded room or the like according to the welding method of the present invention.
Various embodiments are now described with reference to the drawings, wherein like reference numerals are used throughout the drawings to refer to like elements. For purposes of explanation, various descriptions are set forth herein to provide an understanding of the present invention. It is evident, however, that such embodiments may be practiced without these specific details. In other instances, well-known structures and devices are shown in block diagram form in order to facilitate describing the embodiments.

The following description provides a simplified description of one or more embodiments in order to provide a basic understanding of embodiments of the invention. This section is not intended to be a comprehensive overview of all possible embodiments, nor is it intended to identify key elements of all elements or to cover the scope of all embodiments. Its sole purpose is to present the concept of one or more embodiments in a simplified form as a prelude to the more detailed description that is presented later.

Conventionally, as described above, a number of hexagonal tubes and square tubes are used as the configuration of the ventilation holes for shielding electromagnetic waves. In this case, it was necessary to adjust the size and length of each tube to block the electromagnetic wave of the desired size. Therefore, in order to prevent the electromagnetic wave of very high frequency, the cell size was very small and the tube length was very long. According to the inconvenience to continue to create a new ventilation opening to replace.

The length L of this uptake pipe is determined by the following equation.

ω = 2πf

ω = 1.8412c / r

a≤10cm

b≤10cm

L≤5 / √ (a2 + b2), L≤5 / r

r is the radius if the cell is circular and is the size of the diagonal if the cell is polygonal (e.g. a and b if it is a rectangle), c is the speed of light, f is the frequency, and ω is the angular frequency.

As shown in the above equation relationship, it can be seen that as the frequency f becomes larger, the cell size d must be smaller, thereby making the length of the tube L longer. Therefore, in order to prevent the electromagnetic waves of very high frequency, there is an inconvenience that the cell size is very small and the tube length is very long.

In order to solve this problem, the present invention uses a method of inserting a mesh structure into a ventilation pipe.

Ventilation structure for electromagnetic shielding according to an embodiment of the present invention is shown in perspective view in FIG.

Ventilation structure 1 for electromagnetic wave shielding according to an embodiment of the present invention, a plurality of polygonal pipes are connected to each other in a lattice shape of the ventilation pipe 10 and the mesh (mesh) installed in the ventilation pipe (10) It includes. The electromagnetic shielding ventilating structure is installed to pass air and block electromagnetic waves.

Ventilation pipe 10 is made of a constant length of the pipes are bonded to each other in a grid shape as shown in FIG. The lattice shape is a shape in which the cells are combined to have a shape similar to a honeycomb shape. Each tube extends to a certain length (L), the size (d) and the length (L) of the cell is set to shield electromagnetic waves of a frequency of a constant size according to the above equation.

Each cell of the air duct 10 may be polygonal and its shape is not specified. Although illustrated as a rectangle in Figure 1 may have a variety of shapes.

Mesh 20 is a structure made of a polygonal grid of a predetermined size. The mesh 20 is inserted into the air duct, and FIG. 1 exemplarily shows the inserted mesh 20.

The grid form of the mesh 20 also each cell may be made of a polygon, the shape of which is not specified.

The mesh 20 is inserted into the air duct, and the cell size of the mesh 20 is adjusted without changing the size and length of the air duct 10 by varying the size of the cells in the grid shape of the mesh. Vents can be made to fit the size.

In general, the size of the cell of the mesh 20 is smaller than the size of the cell of the air duct 10, so that the shielding of electromagnetic waves having a frequency larger than the size of the frequency that the air duct can shield the conventional air duct 10 In the structure of) can be shielded by the mesh (20).

Therefore, the problem of having to manufacture the ventilation pipe according to the frequency which is a problem of the prior art can be solved by installing the mesh in the ventilation pipe.

On the other hand, the present invention discloses an electromagnetic shielding ventilation opening structure including a replaceable mesh to facilitate the replacement of such a mesh.

By facilitating replacement of the mesh, it is possible to replace a mesh having a different cell size according to the frequency of the electromagnetic wave to be blocked. In some cases, a plurality of such meshes may be inserted, and a structure therefor is also disclosed.

The electromagnetic shielding ventilator structure (1) including a replaceable mesh according to an embodiment of the present invention, the body 300 having a hexahedral shape is opened with a pair of faces facing each other; A ventilation pipe 100 in which a plurality of polygonal tubes are joined to each other in a lattice shape along a length (L) direction between the surfaces of the pair of open surfaces of the main body; And a mesh 300 having a polygonal grid shape having a predetermined size.

Although the mesh may be installed in the air duct as in FIG. 1, it may be detachably attached to an open outer surface of the body, as in FIG. 2, to facilitate replacement of the mesh. As a result, the mesh may be replaced according to the frequency of electromagnetic waves to be shielded.

The ventilation pipes 100 are accommodated in the main body 300 and are welded to the shielding chamber integrally with the main body. These ventilation pipes 100 may be accommodated while maintaining airtightness in the body 300, and the airtightness may be maintained through packaging, gaskets, etc. to maintain such airtightness.

The mesh 200 is detachably attached to the remaining open surface 310 which is not connected to the shielding chamber of the main body, whereby the mesh can be replaced according to the frequency of electromagnetic waves to be shielded. The fixing part 320 is installed on the open surface 310 of the main body to firmly support and fix the mesh 200. The fixing part 320 may be inserted to some extent so as to insert the mesh 200 into the fixing part. It is made of a material having elasticity. The mesh is inserted into the space formed between the locking jaws in the fixing part 320 to maintain airtightness. This structure allows mesh replacement.

According to a further embodiment of the present invention, the electromagnetic shielding ventilation opening structure (1) including a replaceable mesh is a cube-shaped main body 300 with a pair of faces facing open; A ventilation pipe 100 in which a plurality of polygonal pipes are joined to each other in a lattice shape along a surface and a length direction between the pair of open surfaces of the main body; And a mesh grid 200 having a constant size in a polygonal grid installed in the air duct, wherein the air ducts 100 are accommodated in the main body and are welded to the shielded room integrally with the main body, and the main body 300 is the main body. At least one slit 400 and at least one cover 430 for opening and closing the slit formed in a direction perpendicular to the longitudinal axis direction (L direction) of the ventilation pipes on any one surface (the upper surface in FIG. 3) of the unopened surface of the Include.

The cover 430 is opened and replacement of the mesh 200 inserted therein is possible through the slit 400.

On the other hand, in order to completely seal the slit 400, the cover 430 may be welded to the main body 300, it may be fastened with a bolt as shown in FIGS. In this case, a gasket can be inserted in the space between the cover and the body for complete airtightness.

3 and 4, a hole 330 is formed around the slit 400 of the main body 300 to receive the bolt 410, and the cover 420 also allows the bolt 410 to pass therethrough. An opening 430 is formed. This bolt structure allows the slit 400 of the main body to be closed through the cover 420 while maintaining airtightness as shown in FIG. 4.

According to a still further embodiment of the present invention, as shown in Figure 5, the body of the hexahedral shape with a pair of facing faces open; Two or more uptake modules 100 in which a plurality of polygonal tubes are joined to each other in a lattice shape; And one or more meshes 300 in a polygonal grid shape of constant size, in which case one or more meshes 200 that can be fitted with airtightness to the size of each air intake module 100 and the open surface of the body. In this case, each module 100 and the mesh 200 can be fitted while keeping airtight in the size of the open surface of the body. At this time, the ventilation tube module and the mesh can be inserted in any order, in which case the mesh can be replaced according to the frequency of the electromagnetic wave to be shielded.

On the other hand, when the mesh 200 is inserted into the main body 300, in order to prevent the mesh 200 is accurately inserted by the inclination, etc. inside the main body, as shown in Figure 6 the length of the main body on the inner surface of the main body 300 The grooves 350 may be formed on the top, bottom, left, and right sides of the direction L, and the protrusions 250 may be formed on the top, bottom, left, and right sides of the mesh.

The groove 350 and the protrusion 250 may have a shape that matches each other, whereby the protrusion 250 of the mesh is movable along the groove 350 formed on the inner surface of the main body to tilt the mesh. It can prevent the back.

On the other hand, the main body 300 including the ventilation pipe 100 described above is integrally welded to the shielding chamber and the manner is shown in FIGS. 7A-7C.

7A-7C illustrate the welding process in order when welding the main body including the air duct. When the ventilating structure 1 for electromagnetic wave shielding according to an embodiment of the present invention is installed in a cabinet, shielding room, bomb shelter, etc. for electromagnetic wave shielding, the installation method is also very important.

According to the present invention, the ventilation pipe is welded to the shielding chamber, and the method consists of two steps as follows.

After preparing the vent pipe and the guide part to be welded and determining the welding surface to be welded in the main body (see FIG. 7A), the vent pipe is first welded to the guide part larger than the area of the weld target member (see FIG. 7B).

Thereafter, while the vent pipe is welded to the guide part, it is welded to the welding surface of the main body again (see FIG. 7C). Figure 8 shows the final appearance of a state in which the ventilation pipe is welded to the shielded room or the like according to the welding method of the present invention.

In particular, the use of a guide part with an area of more than 3.2 mm above, below, left, and right than the size of the ventilation pipe must be used to completely shield electromagnetic waves.

The description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features presented herein.

Claims (4)

A body of a hexahedron shape in which a pair of faces facing each other are opened;
A ventilation pipe in which a plurality of polygonal tubes are joined to each other in a lattice shape along a length direction between the surfaces of the pair of open surfaces of the main body; And
It includes a mesh of a mesh grid shape of a predetermined size installed in the ventilation pipe,
The ventilation pipe is housed in the body and is welded to the shielded room integrally with the body,
The main body includes at least one cover for opening and closing one or more slits and slits formed in a direction perpendicular to the longitudinal axis direction of the ventilation pipe on any one of the unopened surfaces of the main body,
The mesh can be replaced through the slit by opening and closing the cover,
Ventilation structure for shielding electromagnetic waves, including replaceable mesh.
A body of a hexahedron shape in which a pair of faces facing each other are opened;
A ventilation pipe in which a plurality of polygonal tubes are joined to each other in a lattice shape along a length direction between the surfaces of the pair of open surfaces of the main body; And
Including a mesh of a regular polygonal grid shape,
The ventilation pipe is housed in the body and is welded to the shielded room integrally with the body,
The mesh is detachably attached to the remaining open surface that is not connected to the shield room of the main body, whereby the mesh can be replaced according to the frequency of the electromagnetic wave to be shielded.
Ventilation structure for shielding electromagnetic waves, including replaceable mesh.
A body of a hexahedron shape in which a pair of faces facing each other are opened;
At least two air intake modules in which a plurality of polygonal tubes are bonded to each other in a lattice shape, each of the air intake modules being fitted with airtightness in the size of the open surface of the main body; And
At least one mesh having a polygonal grid shape having a predetermined size, the mesh including a mesh that can be fitted while being airtight in the size of the open surface of the main body,
Any one of the main body is welded to the shielded room,
The ventilation pipe module and the mesh can be inserted into the main body in order, and the mesh can be replaced according to the frequency of electromagnetic waves to be shielded.
Ventilation structure for shielding electromagnetic waves, including replaceable mesh.
The method of claim 3, wherein
Grooves are formed on the inner surface of the main body in up, down, left, and right along the longitudinal direction of both open surfaces.
The protrusions are formed on the upper, lower, left and right sides of the mesh,
Protruding portion of the mesh is movable along the groove formed in the top, bottom, left and right of the inner surface of the main body, the mesh can be inserted into the main body,
Ventilation structure for shielding electromagnetic waves, including replaceable mesh.

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