阅读说明：本技术 具有屏蔽电磁波的电极的除电装置 (Static eliminator with electrode for shielding electromagnetic wave ) 是由 洪大周 李镇燮 李天� 金珉帝 于 2020-03-12 设计创作，主要内容包括：本发明公开一种除电装置,包括：除电器主体,其形成有供应高压空气的空气通道；多个放电结构体,其安装在所述除电器主体的下端,用于供应经过所述空气通道的高压空气,并且,借助于供应的高电压的放电,生成正/负离子；及屏蔽电磁波用电极,其形成有多个开口,以使所述正/负离子和高压空气通过,并且,安装时覆盖所述多个放电结构体的至少一部分。(The invention discloses a static electricity removing device, comprising: a static eliminator main body which is formed with an air passage for supplying high-pressure air; a plurality of discharge structures mounted at a lower end of the static eliminator main body for supplying high-pressure air passing through the air passage and generating positive/negative ions by means of discharge of the supplied high-pressure air; and an electromagnetic wave shielding electrode having a plurality of openings formed therein for allowing the positive/negative ions and the high-pressure air to pass therethrough, and covering at least a part of the plurality of discharge structures when mounted.)

1. An electricity removing device, comprising:

a static eliminator main body which is formed with an air passage for supplying high-pressure air;

a plurality of discharge structures mounted at a lower end of the static eliminator main body for supplying high-pressure air passing through the air passage and generating positive/negative ions by means of discharge of the supplied high-pressure air; and

an electromagnetic wave shielding electrode having a plurality of openings formed therein for allowing the positive/negative ions and the high-pressure air to pass therethrough and covering at least a part of the plurality of discharge structures when mounted,

the electromagnetic wave shielding electrode is formed by bending: a side surface portion covering at least a part of both side surfaces of the static eliminator main body and a lower end portion covering at least a part of the plurality of discharge structures,

at least one cleaning open hole is formed at the lower end of the electromagnetic wave shielding electrode.

2. The neutralization apparatus according to claim 1,

the electrode for shielding electromagnetic waves is formed of any one of a mesh made of metal, a metal plate formed with a plurality of through holes, and a grid in which metal wires are arranged in one direction.

3. The neutralization apparatus according to claim 1,

the electromagnetic wave shielding electrode is formed of at least two sub-electrodes that are bent to form side surface portions covering at least a part of both side surfaces of the discharger main body and to cover lower end portions of at least a part of the plurality of discharge structures.

4. An electricity removing device, comprising:

a static eliminator main body which is formed with an air passage for supplying high-pressure air;

a plurality of discharge structures mounted at a lower end of the static eliminator main body for supplying high-pressure air passing through the air passage and generating positive/negative ions by means of discharge of the supplied high-pressure air; and

an electromagnetic wave shielding electrode having a plurality of openings formed therein for allowing the positive/negative ions and the high-pressure air to pass therethrough and covering at least a part of the plurality of discharge structures when mounted,

the electromagnetic wave shielding electrode is formed by bending: a side surface portion covering at least a part of both side surfaces of the static eliminator main body and a lower end portion covering at least a part of the plurality of discharge structures,

the upper end of the side surface portion of the electromagnetic wave shielding electrode is bent inward to form a bent end portion,

a sliding groove into which the bent end is inserted and slidably coupled is formed in a longitudinal direction of a side surface of the static eliminator main body.

5. An electricity removing device, comprising:

a static eliminator main body which is formed with an air passage for supplying high-pressure air;

a plurality of discharge structures mounted at a lower end of the static eliminator main body for supplying high-pressure air passing through the air passage and generating positive/negative ions by means of discharge of the supplied high-pressure air; and

an electromagnetic wave shielding electrode having a plurality of openings formed therein for allowing the positive/negative ions and the high-pressure air to pass therethrough and covering at least a part of the plurality of discharge structures when mounted,

the electromagnetic wave shielding electrode is formed by bending: a side surface portion covering at least a part of both side surfaces of the static eliminator main body and a lower end portion covering at least a part of the plurality of discharge structures,

the upper end of the side surface portion of the electromagnetic wave shielding electrode is bent inward to form a bent end portion,

the bent end portion is slidably coupled to both side corners of the upper end surface of the static eliminator main body.

6. Neutralization apparatus according to one of claims 1 to 5,

the electromagnetic wave shielding electrode is attached to the static eliminator main body through a coupling member.

7. An electricity removing device, comprising:

a static eliminator main body which is formed with an air passage for supplying high-pressure air;

a plurality of discharge structures mounted at a lower end of the static eliminator main body for supplying high-pressure air passing through the air passage and generating positive/negative ions by means of discharge of the supplied high-pressure air; and

an electromagnetic wave shielding electrode having a plurality of openings formed therein for allowing the positive/negative ions and the high-pressure air to pass therethrough and covering at least a part of the plurality of discharge structures when mounted,

the electromagnetic wave shielding electrode is formed by bending: a side surface portion covering at least a part of both side surfaces of the static eliminator main body and a lower end portion covering at least a part of the plurality of discharge structures,

the side surface portion is rotatably coupled to the static eliminator main body and is rotatable within a predetermined range.

8. An electricity removing device, comprising:

a static eliminator main body which is formed with an air passage for supplying high-pressure air;

a plurality of discharge structures mounted at a lower end of the static eliminator main body for supplying high-pressure air passing through the air passage and generating positive/negative ions by means of discharge of the supplied high-pressure air; and

an electromagnetic wave shielding electrode having a plurality of openings formed therein for allowing the positive/negative ions and the high-pressure air to pass therethrough and covering at least a part of the plurality of discharge structures when mounted,

the electromagnetic wave shielding electrode is formed by bending: a side surface portion covering at least a part of both side surfaces of the static eliminator main body and a lower end portion covering at least a part of the plurality of discharge structures,

the interval between the upper ends of the side parts is smaller than the width of the electrical discharger main body.

9. Neutralization apparatus according to one of claims 1 to 8,

the electromagnetic wave shielding electrodes are independently formed to cover the plurality of discharge structures, respectively.

Technical Field

The present invention relates to a static electricity removing apparatus for removing static electricity from a charged body by using ion generation, and more particularly, to a static electricity removing apparatus having an electrode for shielding electromagnetic waves, in which the electrode for shielding electromagnetic waves is formed to improve the static electricity removing performance with respect to the charged body.

Background

The static electricity removal device is a device that removes static electricity by corona discharge, and in general, a high voltage is supplied to a discharge structure in which a discharge pin is formed to generate corona discharge between adjacent counter electrodes, thereby inducing ion generation. If the supplied high voltage is a positive (+) voltage, positive (+) ions occur, and if the supplied high voltage is a negative (-) voltage, negative (-) ions occur.

The ions generated as described above are taken into the high-pressure air supplied to the air holes of the discharge structure through the separate air discharge member, and are discharged toward the charged body, thereby removing electricity from the charged body. For example, when the charged body is positively (+) charged, the charged body repels positive ions and combines with negative ions to neutralize the charge.

Generally, there are two methods of generating the positive ions and the negative ions, the first method is a method of supplying a positive (+) voltage to one discharge pin and a negative (-) voltage to the other discharge pin among two adjacent discharge pins, and the second method is a method of sequentially generating ions by pulse-supplying a positive (+) voltage and a negative (-) voltage to one discharge pin.

Since the concentration of ions generated from the static elimination device becomes lower as the ions are carried into the high-pressure air and emitted, the static elimination performance generally decreases as the distance where the charged body is located is longer.

However, if the distance between the charge removing device and the charged body is a very short distance of about 10mm, the charge removing performance of the charged body is lowered, and no clear theoretical basis for this has been published so far.

Therefore, there is a need for a technique that can improve the charge removal performance for a charged body even when the gap between the charge removal device and the charged body is very narrow.

Disclosure of Invention

Technical problem to be solved by the invention

The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a static elimination device capable of improving static elimination performance even when the distance from a charged body is a very short distance by interposing an electrode for shielding electromagnetic waves between the charged body and the static elimination device in consideration of the influence of electromagnetic waves in addition to ions generated in the static elimination device.

Still another object of the present invention is to provide a static eliminator which can be applied to an electrode for shielding electromagnetic waves in various configurations and methods.

Technical scheme for solving problems

In order to achieve the above object, a neutralization device according to an embodiment of the present invention includes: a static eliminator main body which is formed with an air passage for supplying high-pressure air; a plurality of discharge structures mounted at a lower end of the static eliminator main body for supplying high-pressure air passing through the air passage and generating positive/negative ions by means of discharge of the supplied high-pressure air; and an electromagnetic wave shielding electrode having a plurality of openings formed therein for allowing the positive/negative ions and the high-pressure air to pass therethrough, and covering at least a part of the plurality of discharge structures when mounted.

ADVANTAGEOUS EFFECTS OF INVENTION

The static eliminator according to the present invention having the above-described configuration has an electrode for shielding electromagnetic waves formed between the charging body and the static eliminator, and therefore, the following effects can be provided: even when the distance between the static elimination device and the charged body is an ultra-short distance, the static elimination performance can be prevented from being reduced.

Further, in the static eliminator according to the present invention, the electromagnetic wave shielding electrode can be attached and detached very easily as necessary, and therefore, cleaning, maintenance, and the like of the discharge structure can be performed easily.

The enhanced effects and benefits of the present invention will be more clearly understood from the detailed description that follows.

Drawings

Fig. 1a is a partially exploded perspective view showing a schematic configuration of a neutralization device having an electrode for shielding electromagnetic waves according to an embodiment of the present invention;

fig. 1b is a perspective view schematically showing the appearance of a neutralization device having an electrode for shielding electromagnetic waves shown in fig. 1 a;

fig. 2a and 2b are a partially cut-away perspective view and a side sectional view showing a schematic configuration of a neutralization device including an electromagnetic wave shielding electrode according to an embodiment of the present invention;

fig. 3 is a perspective view schematically showing the configuration of a neutralization device having an electromagnetic wave shielding electrode according to still another embodiment of the present invention;

fig. 4a is a partially exploded perspective view showing a schematic configuration of a neutralization device having an electrode for shielding electromagnetic waves according to still another embodiment of the present invention;

fig. 4b is a perspective view schematically showing the appearance of a neutralization device having the electromagnetic wave shielding electrode shown in fig. 4 a;

fig. 5 is a partially exploded perspective view showing a schematic configuration of a neutralization device having an electromagnetic wave shielding electrode according to still another embodiment of the present invention;

fig. 6 is a bottom view schematically showing the configuration of a neutralization device having an electromagnetic wave shielding electrode according to still another embodiment of the present invention;

fig. 7 is a perspective view showing a schematic configuration of a neutralization device having an electromagnetic wave shielding electrode according to still another embodiment of the present invention;

fig. 8 is a side view showing a schematic configuration of a neutralization device having an electromagnetic wave shielding electrode according to still another embodiment of the present invention;

fig. 9a is a perspective view showing a schematic configuration of a neutralization device having an electromagnetic wave shielding electrode according to still another embodiment of the present invention;

fig. 9b is a diagram schematically showing a cross section of an electromagnetic wave shielding electrode formed in the neutralization device shown in fig. 9 a;

fig. 10a and 10b are front and bottom views showing a schematic configuration of a neutralization device having an electromagnetic wave shielding electrode according to still another embodiment of the present invention;

fig. 11a is a graph showing an electromagnetic wave waveform measured when electricity is removed by a static removal device not provided with an electrode for shielding electromagnetic waves;

fig. 11b is a graph showing the waveform of the electromagnetic wave measured when the electricity is removed by the electricity removal device having an electrode for shielding the electromagnetic wave.

Reference signs

10 charge eliminator main body 11 upper space

12 air passage 13 control part

14 Upper Cap 20 discharge Structure

21 supporting part 22 annular support part

23 discharge pin 24 insertion port

25 air flow groove 26 ventilation opening

27 conductive plate 28 connecting screw

29 metal tube 30 connecting bracket

31, fixing bracket 40, side cover

41 air inflow terminal 100 static elimination part

200,210,220,230,240,250,260,270,280 electrode for shielding electromagnetic wave

200S,210S,220S,230S,250S,260S,270S side face parts

200B,210B,220B,230B,240B,250B,260B,270B lower end

201 curved end G sliding groove

OP open part H open hole for cleaning

Detailed Description

Hereinafter, a neutralization device having an electrode for shielding electromagnetic waves according to an embodiment of the present invention will be described in detail with reference to the drawings.

Fig. 1a is a partially exploded perspective view showing a schematic configuration of a neutralization device having an electrode for shielding electromagnetic waves according to an embodiment of the present invention; fig. 1b is a perspective view schematically showing the appearance of a neutralization device having an electrode for shielding electromagnetic waves shown in fig. 1 a.

Referring to the drawings, a neutralization device according to an embodiment of the present invention is formed by: a static elimination unit 100 that generates ions by corona discharge; and an electromagnetic wave shielding electrode 200 formed on the discharging unit 100.

The static eliminator has a structure in which positive ions and negative ions are generated by high-voltage discharge and then discharged to a charged body (not shown) by high-pressure air, and a detailed example thereof is shown in fig. 2a and 2 b. Fig. 2a and 2b are a partially cut-away perspective view and a side sectional view showing a schematic configuration of a static elimination device in which an electromagnetic wave shielding electrode 200 according to an embodiment of the present invention is formed.

Referring to the drawings, a neutralization device according to an embodiment of the present invention is formed by: a static eliminator body 10 which forms an upper space 11 and an air passage 12 in a lower part of the upper space, for example, formed in a Bar (Bar) shape by extrusion molding; and a plurality of discharge structures 20 attached to the lower surface of the static eliminator main body 10 at predetermined intervals in the longitudinal direction.

A control unit 13 for controlling and operating the neutralization device, an operation panel (not shown), a connector (not shown), and the like are housed in the upper space 11, and an upper cover 14 is provided in an upper opening portion thereof to be closed. A connecting bracket 30 is coupled to both ends of the upper cover 14 by a coupling member such as a bolt, and the connecting bracket 30 is coupled to a fixing bracket 31 for fixing the static eliminator to another structure (not shown). Preferably, the connecting bracket 30 is formed with an arc-shaped slot 33, and the relative mounting angle of the neutralization device can be arbitrarily adjusted by a fixing screw 34 that penetrates the arc-shaped slot and couples and fixes the connecting bracket 30 and the fixing bracket 31 to each other.

The air duct 12 is formed to extend through the neutralization device body 10 in the longitudinal direction thereof, and is a duct for supplying high-pressure air by blowing from the outside, and the high-pressure air thus supplied is supplied to the discharge structure 20 as described below.

A side cover 40 provided at both open ends of the static eliminator main body 10, and an air inflow terminal 41 connected to another air supply pipe (not shown) is provided at a coupling hole formed in the side cover 40 and communicating with the air duct 12. Further, a sealing member (not shown) such as a gasket may be formed between the electricity remover main body 10 and the side cover 40 in order to prevent leakage of the high-pressure air flowing into the electricity remover main body 10 through the air inflow terminal 41 and the air duct 12.

A plurality of openings communicating with the air duct 12 are formed at predetermined intervals in the longitudinal direction on the lower surface of the static eliminator main body 10, and a discharge structure 20 is provided in each opening. The discharge structure 20 includes: a support member 21 for fixedly supporting the discharge pin; a ring-shaped support member 22 detachably supporting the support member 21.

The support member 21 is formed with an insertion opening 24 having an inner diameter of a size that allows the discharge pin 23 to be inserted and fixed, and a lower portion where the front end of the discharge pin 23 is located is widely opened so that ions generated from the discharge pin 23 are smoothly released together with high-pressure air. An air flow groove 25 may be formed at an inner side surface of the insertion hole 24 into which the discharge pin 23 is inserted and coupled so that high pressure air supplied from the air passage 12 flows downward.

At least one ventilation opening 26 communicating with the air passage 12 is formed in a side surface of the annular frame member 22, and air flowing in through the ventilation opening 26 can be discharged below the support member 21 through the air flow groove 25.

A conductive connection screw 28 electrically contacting a conductive plate 27 for supplying a voltage is provided on an upper portion of the annular holder member 22, and a conductive metal tube 29 coupled to the discharge pin 23 is connected to a lower portion of the conductive connection screw 28. Thus, the voltage supplied to the conductive connection screw 28 through the conductive plate 27 is supplied to the discharge pin 23 through the metal tube 29.

As shown in fig. 1a and 1b, the static eliminator according to the present invention is formed with an electromagnetic wave shielding electrode 200 that is formed to be interposed between a charged body and shields electromagnetic waves. Preferably, the electromagnetic wave shielding electrode 200 is interposed between the discharge structure 20 and the charged body, and covers at least a part of the plurality of discharge structures 20 formed on the lower surface of the neutralizer main body 10.

The electromagnetic wave shielding electrode 200 is made of various metals such as iron, aluminum, copper, or an alloy thereof, and can obtain an electromagnetic wave shielding effect. Alternatively, the electromagnetic wave shielding electrode 200 may be manufactured by plating a non-metallic material or coating a metallic material.

Meanwhile, the electrode 200 for shielding electromagnetic waves according to the present invention is formed with a plurality of openings such that ions generated from the discharge structure 20 pass through together with the high-pressure air to be smoothly discharged to the charged body (i.e., not to obstruct or block the flow thereof), and for this reason, the electrode 200 for shielding electromagnetic waves is preferably formed in a mesh (iron mesh) shape, but is not limited thereto. For example, the electromagnetic wave shielding electrode 200 may be manufactured in a metal plate (not shown) formed with a plurality of through holes, or in a lattice shape (not shown) in which metal lines are arranged in one direction (in a horizontal or vertical direction), and those skilled in the art of the present invention will appreciate that it may be manufactured in various shapes that can be analogized or modified.

The electromagnetic wave shielding electrode 200 shown in fig. 1a and 1B is formed of a mesh-shaped electrode that is bent to form a side surface portion 200S covering at least a part of both side surfaces of the discharger main body 10 and a lower end portion 200B covering at least a part of the plurality of discharge structures 20 attached to the lower surface of the discharger main body 10.

At least a part of the upper end of the side surface 200S of the electromagnetic wave shielding electrode 200 is bent inward to form a continuous or discontinuous bent end 201, and the bent end 201 is coupled to a slide groove G formed extending in the longitudinal direction on the side surface of the static eliminator main body 10 and attached to the static eliminator main body 10. According to the present embodiment, the electromagnetic wave shielding electrode 200 is coupled to the slide groove G formed in the static eliminator main body 10, and thus, is freely attached and detached as necessary (for example, when cleaning and maintenance of the discharge structure 20 are necessary).

As still another alternative, at least a portion of the upper end of the side surface 200S of the electromagnetic wave shielding electrode 200 is bent inward to form a continuous or discontinuous bent end or hook (not shown) that is elastically or interference-fitted into a coupling groove (not shown) formed in the side surface of the static eliminator main body 10 and attached to the static eliminator main body 10. The sliding groove G may also function as the coupling groove.

Fig. 3 is a perspective view schematically showing the configuration of a neutralization device including an electromagnetic wave shielding electrode 200 according to still another embodiment of the present invention.

The electromagnetic wave shielding electrode 210 according to the present embodiment is similar to the electromagnetic wave shielding electrode 200 shown in fig. 1a and 1B in that it is formed of a mesh-shaped electrode that is bent to form a side surface portion 210S covering at least a part of both side surfaces of the discharger main body 10 and a lower end portion 210B covering at least a part of the plurality of discharge structures 20 attached to the lower surface of the discharger main body 10. Therefore, at least a part of the upper end of the side surface portion 210S of the electromagnetic wave shielding electrode 210 of the present embodiment is bent inward and is continuous or discontinuous at the bent end portion 201. In addition, according to the present embodiment, the sliding grooves G for attaching the electromagnetic wave shielding electrode 210 may be formed in the upper end surface of the neutralizer main body 10, or both side corners of the upper end surface of the neutralizer main body 10 may function as the sliding grooves G.

In the present embodiment, it is not necessary to form a separate slide groove G on the side surface of the static eliminator main body 10 in order to attach the electromagnetic wave shielding electrode 210, and the electromagnetic wave shielding electrode 210 covers the entire side surface of the static eliminator main body 10, thereby further improving the effect of shielding electron waves. Further, according to the present embodiment, the electromagnetic wave shielding electrode 210 can be attached to or detached from the static eliminator main body 10 as needed (for example, when the discharge structure 20 needs to be cleaned or maintained).

Alternatively, at least a part of the upper end of the side surface 210S of the electromagnetic wave shielding electrode 210 may be bent inward to form a continuous or discontinuous bent end 201, and the bent end 201 may be attached to the static elimination device body 10 by being elastically or interference-fitted to both side corners of the upper end surface of the static elimination device body 10.

Fig. 4a is a partially exploded perspective view showing a schematic configuration of a static elimination device in which an electromagnetic wave shielding electrode 220 according to yet another embodiment of the present invention is formed; fig. 4b is a perspective view schematically showing the appearance of a neutralization device in which the electromagnetic wave shielding electrode 220 shown in fig. 4a is formed.

The electromagnetic wave shielding electrode 220 according to the present embodiment may be formed of two or more sub-electrodes 221 and 222 covering at least a part of the neutralizer main body 10. The electromagnetic wave shielding electrode 220 illustrated in the present embodiment is composed of, for example, a 1 st sub-electrode 221 and a 2 nd sub-electrode 222. Each sub-electrode 221 or 222 is formed of a side surface portion 220S that is bent to cover at least a part of both side surfaces of the static eliminator main body 10, and a mesh electrode that covers at least a part of the lower end portions 220B of the plurality of discharge structures 20 attached to the lower surface of the static eliminator main body 10.

At least a part of the upper end of the side surface 220S of each sub-electrode 221 or 222 is bent inward to form a continuous or discontinuous bent end 201, and the bent end 201 is joined to a slide groove G formed extending in the longitudinal direction on the side surface of the static eliminator main body 10 and attached to the static eliminator main body 10. According to the present embodiment, the respective sub-electrodes 221 and 222 are coupled to the slide groove G formed in the neutralizer main body 10, and thus, are freely attached and detached as necessary (for example, it is necessary to clean and maintain the discharge structure 20).

Furthermore, the sub-electrodes 221 and 222 of the electromagnetic wave shielding electrode 220 according to the present embodiment can be individually attached/detached, and if attached to the static eliminator main body 10, as shown in fig. 4b, the open portion OP can be secured between the sub-electrodes 221 and 222 (in the embodiment of fig. 4 b) or on one side (when all of the sub-electrodes 221 and 222 are slid and collected to one side), so that the discharge structure 20 can be cleaned or maintained without completely separating the electromagnetic wave shielding electrode 220 from the static eliminator main body 10.

Alternatively, at least a part of the upper ends of the side surface portions 220S of the sub-electrodes 221 and 222 are bent inward to form a continuous or discontinuous bent end portion 201, and the bent end portion 201 is bonded to the static eliminator main body 10 by elastic or interference fit with a bonding groove (not shown) formed in the side surface of the static eliminator main body 10.

Fig. 5 is a partially exploded perspective view showing a schematic configuration of a neutralization device including an electromagnetic wave shielding electrode 230 according to still another embodiment of the present invention.

The electromagnetic wave shielding electrode 230 of the present embodiment is formed of a mesh electrode in which a side surface portion 230S covering at least a part of both side surfaces of the static eliminator main body 10 and a lower end portion 230B covering at least a part of the plurality of discharge structures 20 attached to the lower surface of the static eliminator main body 10 are formed by bending. At least a part of the upper end of the side surface portion 230S of the electromagnetic wave shielding electrode 230 is bent inward to form a continuous or discontinuous bent end portion 201, and the bent end portion 201 is coupled to a slide groove G formed extending in the longitudinal direction on the side surface of the static eliminator main body 10 and attached to the static eliminator main body 10. According to the present embodiment, the electromagnetic wave shielding electrode 230 is coupled to the sliding groove G formed in the static eliminator main body 10 and is freely attached to and detached from the static eliminator main body as needed (for example, when the discharge structure 20 needs to be cleaned and maintained).

Further, according to the present embodiment, the length L1 of the electromagnetic wave shielding electrode 230 is smaller than the length L2 of the plurality of discharge structure 20 rows attached to the lower end of the discharger main body 10. Therefore, when the electromagnetic wave shielding electrode 230 is moved to one side, an open portion can be secured on the opposite side, and therefore, the discharge structure 20 can be cleaned or maintained without completely separating the electromagnetic wave shielding electrode 200 from the static eliminator main body 10.

As still another alternative, at least a part of the upper end of the side surface portion 230S of the electromagnetic wave shielding electrode 230 is bent inward to bend the end portion 201, and the bent end portion 201 is attached to the static elimination device body 10 by being elastically or interference-fitted to a coupling groove (not shown) formed in the side surface of the static elimination device body 10.

The electromagnetic wave shielding electrode described above may be provided with another cleaning open hole for cleaning or repairing the discharge structure 20, and fig. 6 shows an example of the above configuration. That is, as shown in fig. 6, at least one or more open cleaning holes H are formed in the lower end 240B of the electromagnetic wave shielding electrode 240 covering at least a part of the plurality of discharge structures 20 attached to the lower surface of the discharger main body 10, and thus the discharge structures 20 can be cleaned or maintained. In particular, as shown in fig. 6 a and b, when the electromagnetic wave shielding electrode 240 is configured to be slidable in the longitudinal direction of the static eliminator main body 10, the electromagnetic wave shielding electrode 240 is appropriately slid to adjust the cleaning open hole H to a desired position.

Fig. 7 is a perspective view showing a schematic configuration of a neutralization device including an electromagnetic wave shielding electrode 250 according to still another embodiment of the present invention.

The electromagnetic wave shielding electrode 250 according to the present embodiment is formed of a mesh electrode in which a side surface portion 250S covering at least a part of both side surfaces of the static eliminator main body 10 and a lower end portion 250B covering at least a part of the plurality of discharge structures 20 attached to the lower surface of the static eliminator main body 10 are formed by bending.

The electromagnetic wave shielding electrode 250 may be fixed to the static eliminator main body 10 by a fastening member F such as a bolt. Specifically, a plurality of bolt coupling holes (not shown) are formed in a side surface of the static eliminator main body 10, and a through hole 251 through which a bolt passes is formed in the electromagnetic wave shielding electrode 250.

Thus, as shown in the drawing, a coupling member F such as a bolt is coupled to a bolt coupling hole formed in the side surface of the static eliminator main body 10 through the through hole 251, and the electromagnetic wave shielding electrode 250 is attached to the static eliminator main body 10. Although the drawings show an example in which three coupling members F are coupled to one side and the electromagnetic wave shielding electrode 250 is attached, the number, coupling positions, and the like of the coupling members F are not limited to the embodiment.

Fig. 8 is a side view showing a schematic configuration of a neutralization device including an electromagnetic wave shielding electrode 260 according to still another embodiment of the present invention.

The electromagnetic wave shielding electrode 260 of the present embodiment is formed by bending a side surface portion 260S covering at least a part of one side surface of the static eliminator main body 10 and a mesh electrode covering at least a part of the lower end portions 260B of the plurality of discharge structures 20 attached to the lower surface of the static eliminator main body 10. Unlike the above-described embodiments, the electromagnetic wave shielding electrode 260 according to the present embodiment is configured such that the lower end portion 260B extends from the lower end of the side surface portion 260S, and a side surface portion covering the side surface portion is not formed on the other side surface of the static eliminator main body 10.

The side surface 260S of the electromagnetic wave shielding electrode 260 is coupled to the static eliminator main body 10 by a hinge member HG, and more preferably, is rotatably coupled to the upper cover 14 within a predetermined range. Specifically, one end of the hinge member HG is fixed to the upper cover 14 formed at the upper portion of the static elimination device body 10 by a coupling member such as a bolt, and the other end of the hinge member HG is coupled to the upper end of the side surface 260S of the electromagnetic wave shielding electrode 260 by another method such as a coupling member, welding, or soldering. Accordingly, the electromagnetic wave shielding electrode 260 of the present embodiment can rotate in the directions of arrows a and B shown in the drawing with respect to the static eliminator main body 10.

For example, in order to remove static electricity from a charged body, the electromagnetic wave shielding electrode 260 is rotated in the direction of arrow a during a discharge operation so that the lower end 260B covers at least a part of the plurality of discharge structures 20 formed on the lower surface of the static eliminator main body 10, and conversely, the electromagnetic wave shielding electrode 260 is rotated in the reverse direction B during cleaning and maintenance so that all of the plurality of discharge structures 20 are exposed. Therefore, for example, when the discharge structure 20 needs to be cleaned and maintained as needed, the electromagnetic wave shielding electrode 260 can be easily detached and attached.

Fig. 9a is a perspective view showing a schematic configuration of a neutralization device including an electromagnetic wave shielding electrode 270 according to still another embodiment of the present invention; fig. 9b is a diagram schematically showing a cross section of the electromagnetic wave shielding electrode 270 formed in the neutralization device shown in fig. 9 a.

Referring to fig. 9a and 9B, the electromagnetic wave shielding electrode 270 is formed of a mesh electrode in which a side surface portion 270S covering at least a part of both side surfaces of the discharger main body 10 and a lower end portion 270B covering at least a part of the plurality of discharge structures 20 attached to the lower surface of the discharger main body 10 are formed by bending.

According to this embodiment, as shown in the cross-sectional view of fig. 9b, the side surface portions 270S of the electromagnetic wave shielding electrode 270 are formed such that the distance therebetween is gradually reduced from the lower end to the upper end. At this time, the interval between the upper ends of the side surface portions 270S is smaller than the width of the static eliminator main body 10.

The electromagnetic wave shielding electrode 270 configured as described above is elastically sandwiched and attached to the lower end of the static eliminator main body 10. That is, since the electromagnetic wave shielding electrode 270 made of metal has a certain degree of elasticity, the side surface portions 270S of the electromagnetic wave shielding electrode 270 are expanded to both sides and the lower end of the static eliminator main body 10 is inserted therebetween, and at this time, the interval between the upper ends of the side surface portions 270S is smaller than the width of the static eliminator main body 10, and therefore, the electromagnetic wave shielding electrode 270 can be adhered by elastically sandwiching both side surfaces of the static eliminator main body 10.

At least a part of the upper end of the side surface 270S of the electromagnetic wave shielding electrode 270 is bent inward to form a continuous or discontinuous bent end 201, and the bent end 201 is elastically or interference-fitted into a coupling groove (not shown) formed in the side surface of the electrical discharge device body 10, whereby the electromagnetic wave shielding electrode 270 can be attached.

Alternatively, in order to facilitate insertion of the removed electric device body 10 between the side surface portions 270S of the electromagnetic wave shielding electrode 270, the upper end of the side surface portion 270S may be bent outward to form an insertion guide portion (not shown).

Conversely, when the electromagnetic wave shielding electrode 270 is removed for cleaning or maintenance of the discharge structure 20, the electrode is pulled downward and easily separated from the remover main body 10.

Fig. 10a and 10b are front and bottom views showing a schematic configuration of a neutralization device including an electromagnetic wave shielding electrode 280 according to still another embodiment of the present invention.

According to the present embodiment, the electromagnetic wave shielding electrodes 280 are formed independently on each of the plurality of discharge structures 20 formed at the lower end of the neutralization device body 10. That is, the electromagnetic wave shielding electrode 280 is formed in a size capable of covering each discharge structure 20, and is independently attached to the lower surface of the discharge structure 20 or the static eliminator main body 10.

In the present embodiment, the electromagnetic wave shielding electrode 280 is formed in an elliptical shape corresponding to the shape of the discharge structure 20, but the shape and size of the electromagnetic wave shielding electrode 280 are not limited to the present embodiment, and the shape and size may be set differently as long as the discharge structure 20 can be independently covered.

The structure of attaching the electromagnetic wave shielding electrode 280 to the discharge structure 20 or the lower portion of the static eliminator main body 10 may be designed differently, for example, a hook is formed on one side, a hook is formed on the other side, and the electromagnetic wave shielding electrode 280 is attached by the mutual previous connection. In addition, the electromagnetic wave shielding electrode 280 may be attached to the lower end of the discharge structure 20 or the static eliminator main body 10 using a separate coupling member.

The description of the electromagnetic wave shielding electrode in the above-described embodiment is limited to the mesh electrode, but this is merely a simple example presented for the convenience of description of the present invention, and it should be understood that the same concept of the electromagnetic wave shielding electrode having a different configuration and coupling structure (for example, an electromagnetic wave shielding electrode formed by bending a metal plate having a plurality of through holes or a grid-shaped electromagnetic wave shielding electrode formed by arranging a plurality of metal wires in one direction) can be similarly applied.

Further, it is to be understood that, in addition to the above-described embodiments, a configuration in which all or part of the above-described configurations are combined with each other also falls within the scope of the present invention. For example, although not shown and described, the configuration shown in fig. 4a and 4b and the configuration shown in fig. 5 can be applied to the electromagnetic wave shielding electrode shown in fig. 1a and 1b, fig. 3, fig. 5, and fig. 7 to 9b in the same manner.

Next, the operation of the neutralization device according to the embodiment of the present invention having the above-described configuration will be described.

The charged body of the object to be removed of static electricity is brought close to the neutralization device of the present invention and a discharge operation is performed. At this time, a preset high voltage is supplied to a conductive plate 27 formed on an upper portion of the ring bracket member 22 through a control part, an operation plate, and the like, and the supplied high voltage is supplied to the discharge pin 23 through a conductive metal tube 29 by a conductive connection screw 28 contacting the conductive plate 27. For example, of the two adjacent discharge pins 23, a positive voltage is supplied to one discharge pin 23 and a negative voltage is supplied to the other discharge pin 23, or a positive voltage and a negative voltage are alternately supplied to one discharge pin 23 by pulses. Thereby, corona discharge occurs between the counter electrodes, and positive/negative ions are generated from the discharge pin 23.

At the same time, high-pressure air flows into the air passage 12 from an air supply pipe (not shown) connected to an air inflow terminal 41 formed in the side cover 40 of the neutralization device body 10. The high-pressure air flowing in flows into the insertion port 24 of the support member 21 through the ventilation opening 26 formed in the annular holder member 22, and is released to the lower portion of the discharge pin 23 along the air flow groove 25 formed in the inner side surface thereof.

Since the support member 21 is formed with an expanded open portion at the lower portion of the discharge pin 23, the discharged air transports the positive/negative ions generated from the discharge pin 23 to the charged body, and the discharge operation can be performed.

When the above-described discharge operation is performed, the charge removing performance of the charged body is rather deteriorated when the charge removing device approaches the charged body at an ultra-short distance of, for example, about 10mm, and therefore, the charge removing device of the present invention can prevent the deterioration of the charge removing performance by interposing an electromagnetic wave shielding electrode for shielding electromagnetic waves between the discharge structure 20 and the charged body. The effects of the present invention described above can be confirmed in experimental examples described in detail below.

Examples of the experiments

The static eliminator used in this experiment was a static eliminator of ASG-a series corona ion discharge type, a common product of the applicant, and was designed to have an input voltage DC24V, an input current of 300mA at maximum, a discharge voltage of 4.75kV to 5.5kV, an output frequency of 0.1Hz to 100Hz, and a pulse ac supply mode, in general. The distance from the charged body of the static electricity removal object was 10mm, the pressure of the blowing air was 1 Bar (Bar), and Trek158 was used as a measuring tool.

As a comparative example for this, a discharge operation (indicated by "present invention" in the following table) was performed by the static eliminator formed with the mesh-shaped electromagnetic wave shielding electrode 200 made of steel according to fig. 1a and 1b, and a discharge operation (indicated by "comparative example" in the following table) without the electromagnetic wave shielding electrode 200 formed was performed at the same time, and the results thereof are shown in table 1 below.

[ TABLE 1 ]

Fig. 11a and 11b show the results of the electromagnetic wave waveform measured in the charged body.

Here, fig. 11a shows the waveform of the electromagnetic wave measured when the electromagnetic wave shielding electrode 200 (comparative example) is not formed, the effective voltage is 22.33Vrms, and the maximum and minimum voltage swings are 59.7 vp.p.

On the contrary, fig. 11b shows the waveform of the electromagnetic wave measured when the electromagnetic wave shielding electrode (200) is formed (the present invention), the effective voltage is 2.144Vrms, and the maximum and minimum voltage swing is 8.1 vp.p.

As described above, if the electromagnetic wave shielding electrode 200 according to the present invention is interposed between the charge removing device and the charged body when the discharge operation is performed at the ultra-short distance, the voltage deviation is significantly reduced, and therefore, the charge removing time is significantly reduced.

The present invention has been described in detail with reference to the embodiments and the drawings, but the technical idea of the present invention is defined by the items described in the claims, and various modifications and equivalents may be made without departing from the scope of the technical idea of the present invention.