KR101000353B1 - Filter device for shielding communication equipment in cabinet against foreign substances flowed through cooler - Google Patents

Abstract

The present invention claims as a right the external foreign matter shielding filter device of the communication box cooling draw-out.

The filter device of the present invention allows two different filters to be mounted independently in order to effectively block external debris that may enter the communication enclosure and to effectively block fine dust and moisture. In addition, by configuring the filters to be detachably free from the filter device housing, it is possible to remove the filters from the housing and simply clean them during maintenance, thereby achieving a significant effect of preventing frequent filter changes. Can be.

Communication enclosures, debris, filters, replacements and fans

Description

FILTER DEVICE FOR SHIELDING COMMUNICATION EQUIPMENT IN CABINET AGAINST FOREIGN SUBSTANCES FLOWED THROUGH COOLER}

The present invention relates to a device for cooling the inside of a housing of a communication device, and more particularly to an external foreign matter shielding filter device for use in a cooling device.

Since many communication devices and power devices are enclosed inside the cabinet inside the communication box, a countermeasure against heat generation during operation of these devices and devices is required. In the case of outdoor enclosures, the heat generation measures are essential because the installation environment is poor and internal heat generated continuously inside the enclosure is added to the external heat such as solar radiation. In addition, in the case of indoor enclosures, since a lot of heat is generated from the communication equipment inside the cabinet, a heat countermeasure should be taken.

In general, as a countermeasure for heat generation of a communication box, a fan cooling system has been widely adopted as an air cooling type, that is, a cooling system by air convection. However, when the outside air is introduced through the fan, foreign matter such as dust or insects can be introduced together, which can threaten the normal operation of the communication equipment. As a countermeasure against this problem, an air filter system has been adopted. In other words, by structuring the air filter in a proper position at the time of fan cooling, the outside air passes through the air filter and then flows into the cabinet.

Floating dust in the air contains a large number of impurities, including electricity, which can accumulate on circuit boards in telecommunications equipment and can damage components through short circuits. In addition, when dust causes mutual friction to generate static electricity, it adversely affects the normal operation and reliability of communication equipment. In particular, the main component of the yellow dust dust covering Korea in spring is feldspar (aluminum) as the main component and also contains a lot of iron components, air filter measures are very important in the operation of the communication box.

However, the conventional air filter has to be always maintained with consumable parts, and in particular, it has to be regularly replaced, for example, once every six months, and the cost factor of this causes a considerable burden on the operation of the communication box. . Moreover, because the number of communication boxes for indoor and outdoor use is very large, the cost burden associated with the replacement of the air filter has to be greatly increased.

1 shows the configuration of a conventional air filter used in a communication enclosure. A plurality of filter layers 3 are stacked in the steel housing 1 at regular intervals to form the filter part 2. Both edges of each filter layer 3 are structured to be firmly fixed to the housing 1. The conventional air filter has a structure in which the housing 1 and the filter layer 3 therein are integrated, and thus the air filter cannot be replaced. Therefore, when the air filter damage and aging caused by external debris can not be effectively repaired, it was necessary to purchase a new air filter itself. Moreover, this prior art merely filters by expanding the contact area between the incoming air and the filter surface when the air is introduced, and all such filter layers 3 also feature the same single filter cut-off structure. Therefore, it could not be a measure that can be filtered differently depending on the type of foreign matter introduced.

The present invention has been completed after a thorough research effort to solve the above problems of the prior art.

An object of the present invention to solve the problems of the prior art as described above, to provide an external foreign matter shielding filter device for a communication enclosure that can be used without replacement for a long time.

In addition, since the external foreign matter shielding filter device for the communication enclosure to perform the function of protecting the equipment and equipment inside the enclosure from the external foreign matter, another object of the present invention to provide a filter device of the structure that can effectively block the external foreign matter. have.

In addition, another object of the present invention is to provide a filter device that can effectively absorb not only foreign matters but also moisture introduced with the outside air.

The object of the present invention as described above is to innovate the conventional filter device that must be used and replaced only for a short period of time, so that it can be used for a long time with a simple maintenance, as a result, to reduce the cost of operating the communication box and in terms of recycling It is contributing to the development of the communication industry itself, which seeks an environmentally friendly approach.

On the other hand, other unspecified objects of the present invention will be further considered within the range that can be easily inferred from the following detailed description and effects.

In order to achieve the above object, the present invention is an external foreign matter shielding filter device of the communication box cooling draw-out portion:

A housing of the metal member having an access part at one side, and having a front and rear open; A first filter drawn in and installed into the housing through the inlet and out of the housing and, when replaced, drawn out of the housing through the same side; And a second filter detachable through the access part of the housing while maintaining a separation distance from the second filter.

Further, preferably, the first filter is for blocking dust and insects, and the filter surface of the mesh structure formed by the warp and weft yarns in a synthetic resin yarn forms a two-layer structure.

In addition, preferably, the second filter is for removing fine dust and moisture, and the grid-like metal wire may be integrated in close contact with both surfaces of the filter member made of a nonwoven fabric.

The apparatus may further include a first support rod fixed to one end of the frame positioned at the edge of the first filter and the other end opposite to the one end, and supporting the filter surface of the first filter. desirable.

In addition, it is preferable to further include a second support rod which is installed across one surface of the second filter and supports the second filter.

The external foreign matter shielding filter device of the communication enclosure cooling draw-out part of the present invention is not only easy to install, but also can be reused immediately by removing each filter from the housing and simply washing with water or wiping with a cloth. It is very economical. Therefore, there is an effect that can significantly solve the cost burden due to the frequent replacement, which was a conventional problem.

In addition, the external foreign matter shielding filter device of the communication box of the present invention has the advantage that can achieve excellent foreign matter shielding effect by the dual filtering by the first filter and the second filter.

In particular, since the dual filtering structure of the present invention is a structure that can remove foreign substances such as large dust and insects first, and then effectively remove not only fine dust but also moisture, the performance of equipment caused by fine dust and moisture and There is an advantage that it is possible to prevent the problem of power short that occurs suddenly. Furthermore, not only effective filtering but also a predetermined separation distance between the first filter and the second filter can ensure the effect of air convection inside the enclosure.

Although effects not specifically mentioned in the specification of the present invention, it is added that the potential effects expected by the technical features of the present invention are treated as described in the specification of the present invention.

Hereinafter, with reference to the accompanying drawings will be described specific details for the practice of the invention. In the following description of the present invention, when it is determined that the subject matter of the present invention may be unnecessarily obscured as matters obvious to those skilled in the art, such as related well-known functions, the detailed description thereof will be omitted.

Figure 2 shows an example of the overall configuration of the external foreign matter shielding filter device according to the present invention. The hexahedral filter device housing 100 made of a metal member is open to the front and rear, and outside air may be introduced through the open area. The upper, rear, left, and right sides of the housing 10 form one frame, and one side of the housing 10 is opened to form an entrance 110. A predetermined guide may be formed inside each side. Reference numerals 104, 106, and 108 denote predetermined guides, but other guides other than those indicated by reference numerals are further formed. That is, when guiding the first filter 120 and the second filter 130 to enter and exit, two guides may be formed in each side of each side of the housing 100. The guide may be formed in the same shape as the guide of the sliding door. The metal member of the housing 100 is preferably aluminum, but any material may be used as long as it is a material resistant to corrosion.

Synthetic resin is tightly woven, the first filter 120 having a filter surface of the net structure is drawn and mounted into the housing 100 through the entrance portion 110, it may be drawn out in the opposite direction. The first filter 120 filters the dust, the worm, etc. of a large size from being introduced into the communication enclosure. The second filter 130 formed of a combination of a nonwoven fabric and a metal wire has a housing 100 in parallel with the first filter 120 through the entrance 110 of the housing 100 while maintaining a predetermined distance. It can be pulled in and mounted inside, and can also be pulled out in the opposite direction. This second filter filters fine dust and absorbs moisture.

The first filter 120 and the second filter 130 are completely mounted into the housing 100, and then the access part 110 is sealed by the access panel 102. Each panel of the housing may be fastened using a fastening means such as a rivet 140 to a hole formed at a predetermined position of the housing 100.

The size of the housing may be appropriately determined by the size and installation environment of the communication enclosure. For example, in the WCDMA standard indoor enclosure of LG-NOTEL, a filter device of 410 × 250 × 100 (width × length × height) was fabricated and the filter suction rate and replacement cycle were tested. In the standard outdoor enclosure, 745 × 245 × 75 As a standard of 395 × 280 × 100 in a small outdoor enclosure. As a result, the filter suction rate was improved than the performance of the conventional product, and also it was confirmed that it was excellent in the viewpoint of maintenance. No special replacement was found, unless there was an aging due to accidents or prolonged use (eg 10 years).

As shown in Fig. 2, the filter device of the present invention is detached from and respectively to the housing while the two filters maintain a predetermined distance from each other. The separation distance is achieved by adjusting the spacing of the guides formed inside the side panels of the housing. The distance between the guide for the first filter and the guide for the second filter may be defined as the separation distance between the two filters.

Figure 3 schematically shows a view from the side of the filter device of the present invention. A predetermined space 150 is formed between the first filter 120 and the second filter 130, through which air can flow into the enclosure in the direction of the arrow. Maintaining the desired separation distance not only ensures a smooth inflow of air, but also assists in the effective moisture absorption by the second filter. On the other hand, the first filter 120 may be a double structure of the filter surface 121, 123 of the mesh structure made of a dense mesh. That is, the filter absorption rate can be improved by bringing the filter surface 121 and the filter surface 123 of the same structure into close contact with each other.

As shown in FIG. 4, the filter surface 121 (123 is opposite) is mounted and fixed to the mold 128 of the metal member. The first support rod 129 may be installed to prevent the filter surface from bending. Both ends of the first support rod 129 are fixed to one end in the longitudinal direction of the mold 128 and the other end opposite to the one end thereof, and by supporting the filter surface, Damage can be prevented. Synthetic resin constituting the filter surface (121, 123) may use a yarn made of polypropylene (polypropylene) material. The first filter 120 may have a synthetic resin yarn inclined with a weft yarn to have filter surfaces 121 and 123 having a mesh structure.

In another embodiment, the mesh structures of the filter surfaces 121 and 123 may be formed in two layers, respectively. See FIG. 5. 5 illustrates the mesh structure of the first filter 120 in more detail. The figure at the top of the figure illustrates a plane of the first filter 120, and the bottom illustrates a cross section. As shown in FIG. 5, the filter face 121 is also formed of two layers of meshes, and the filter face 123 may also be formed of two layers of meshes. When the meshes of the respective filter surfaces 121 and 123 overlap each other, the contact surface of the synthetic resin with the air introduced by allowing the meshes of the meshes to be formed differently or at different angles for more effective filtering. Can increase.

6 and 7 show a configuration example of the second filter 130. The second filter 130 filters the fine dust passing through the first filter 120, and also serves to remove moisture. Similar to the first filter 120, the second filter 130 has a rectangular frame 134 structure the filter surface 132. The filter surface 132 may be configured by integrating the nonwoven fabric 133 and the metal wire 135. Metal wires 135 that form a small lattice structure in series may be integrated in close contact with both sides of the nonwoven fabric 133. In this way, the nonwoven fabric 133 is divided into a very large lattice, and the filtering effect can be doubled because the nonwoven fabric 133 that removes fine dust and moisture is faced with the inflow direction of air by the physical rigidity of the metal wire. have. As such, the metal wire 135 may be integrated with the nonwoven fabric 133 while forming a small lattice, thereby increasing durability of the nonwoven fabric 133.

In addition, in addition to the integrated structure of the metal wire 135 and the nonwoven fabric 133 as described above, the second filter 130 can be more firmly maintained by further configuring the second support rod 136. The second support rod 136 may be made of a metal member similarly to the first support rod 129, and the second support rod 136 may cross the surface of either side of the filter surface 132 of the second filter 130 while crossing the second surface. It may be fixed to the frame 134 of the filter 130. In addition, as shown, a pair of support rods, each end of the second support rod 136 may be fixed to the edge of the frame 134 may be installed to form an "X".

According to the present invention, it is possible to attach and detach the first filter 120 and the second filter 130 as described above through the entrance 110 of the housing 100, respectively, the synthetic resin of the net structure forms a two-layer structure The first filter 120 is separated from the housing 100, and the maintenance is completed only by wiping with water. In the case of the second filter 130, the first filter 120 is similarly separated from the housing 100 and maintained only by wiping with a clean cloth. The maintenance is completed, which avoids the costly waste of additional work or replacement.

On the other hand, the scope of protection of the present invention is not limited by the embodiments explicitly described above. In addition, it should be noted that the protection scope of the present invention may not be limited due to obvious changes or substitutions in the technical field to which the present invention belongs.

1 is a perspective view showing a conventional filter device.

2 is an exploded perspective view showing a configuration example of a filter device according to the present invention.

3 is a cross-sectional view schematically showing the filter cross section of the filter device according to the present invention.

4 is a diagram illustrating a configuration of a first filter of the filter device according to the present invention.

It is a figure which shows the front and sectional structure example of the said 1st filter.

6 is a diagram illustrating a configuration of a second filter of the filter device according to the present invention.

7 is an enlarged view illustrating a configuration of a filter surface of the second filter.

<Explanation of symbols for the main parts of the drawings>

100: filter unit housing

104, 106, 108: Guide 110: access

120: first filter 121, 123: filter surface

129: first support rod 130: second filter

132: filter face 136: second support rod

140: fastening means

The accompanying drawings show that they are illustrated as a reference for understanding the technical idea of the present invention, by which the scope of the present invention is not limited.

Claims (5)

As an external debris shielding filter device of the communication box cooling inlet and outlet: A housing of a metal member having a rectangular parallelepiped shape, having an entrance and a plurality of guides on one side thereof, and having front and rear sides opened; A first filter drawn in and installed into the housing through the inlet and out of the housing and, when replaced, drawn out of the housing through the same side; And A second filter detachable through the inlet and outlet of the housing while maintaining a separation distance from the first filter, (1) The first filter is for blocking dust and worms, and has a two-layered structure in which two filter surfaces having a net structure organized in a warp and weft yarn are in close contact with each other. (2) The internal space 150 formed between the first filter and the second filter is empty without any other member interposed therebetween for smooth inflow of air and effective moisture absorption, (3) The second filter is for removing fine dust and moisture and is integrated in a state in which a metal wire forming a small lattice structure is in close contact with both sides of a filter member made of a nonwoven fabric. (4) The external foreign matter shielding filter device of the communication compartment cooling inlet / outlet, wherein the first filter is disposed in front of the second filter so that the outside air passes through the first filter and passes through the second filter. delete delete The method of claim 1, And a first support rod fixed to one end of the frame positioned at the edge of the first filter and the other end facing the one end, the first support rod supporting the filter surface of the first filter. External foreign material shielding filter device of cooling inlet and outlet. The method of claim 1, And a second support rod installed across one surface of the second filter and supporting the second filter.

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