JP2010113837A - Self-discharge type static eliminator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a self-discharge type static eliminator applicable to an environment in which static charges are widely distributed three-dimensionally, and a charged particle group moves toward a self-discharge electrode by electrostatic attraction. <P>SOLUTION: The self-discharge type static eliminator 100, used in a vessel 101 where static charges are three-dimensionally distributed, is provided with a self-discharge electrode 110 made of a conductive material, a support body 120 supporting the self-discharge electrode 110, and an air flow generating means 130 radiating an air flow outside the vessel 101 toward the self-discharge electrode 110. <P>COPYRIGHT: (C)2010,JPO&amp;INPIT

Description

  The present invention relates to a self-discharge type static eliminator.

  Conventionally, in the process of handling insulator particles and insulator powders, charged particles, powders, fine fragments, pellets, etc. (hereinafter, referred to as “prevention of troubles due to static electricity, improvement of quality and yield”, etc.) A neutralization system is used for neutralizing the inside of a pipe line that transports the charged particles) or a container in which these charged particles are accumulated.

  For example, a voltage application type static eliminator such as an AC static eliminator performs static elimination by blowing positive and negative ions generated from an electrode to which a high voltage is applied in an air stream. If positive and negative ions can be supplied in a well-balanced manner, the charge removal capability in the vicinity where ions are ejected can be made extremely high.

  However, since the ejected positive and negative ions are recombined, the neutralization capability decreases as the time after ejection elapses, that is, as the distance from the neutralizer increases.

  From such a background, Patent Documents 1 and 2 as a method for removing the charge of the charged particles in the pipe and the container pass through the pipe by attaching a special corona discharge electrode to the side of the pipe. Methods for neutralizing charged particle groups, Patent Documents 3 and 4, respectively, propose a method of disposing a voltage application type static eliminator on the side surface of a container for storing powder. All of these methods are intended to effectively remove static electricity by bringing the generation source of static elimination ions closer to the charged particle group.

  However, in these voltage application type static eliminators, since a high voltage is always applied to the corona discharge electrode, there are problems such as ignition due to mixing of particles into the electrode portion and high voltage leakage due to insulation deterioration between the electrodes. May occur.

  In addition, it is inevitable that the ability to remove static electricity is deteriorated due to electrode deterioration and wear due to discharge, and the ion balance is deteriorated due to electrode wear.

  When the ion balance is deteriorated, not only the charge removal ability is greatly reduced, but also the particles to be discharged are positively charged. In order to avoid such a situation, it is necessary to periodically maintain the electrodes in a short cycle.

  Moreover, in order to send positive and negative ions generated at the electrode part effectively to the outside of the electrode by an air flow, a large air volume is required.

  On the other hand, when the object to be neutralized forms a sufficiently high electric field in the surroundings, simply bringing a grounded electrode (self-discharge electrode) close to it causes a corona discharge with a polarity opposite to that of the charged object to occur from the ground electrode. The object can be neutralized by this corona discharge. A static eliminator based on such a principle is called a self-discharge type static eliminator.

  However, since the self-discharge electrode does not operate unless the electric field around the tip of the electrode becomes equal to or higher than the corona discharge start electric field, there is a problem that it is difficult in principle to neutralize all charges of the charged object.

  However, with the self-discharge type static eliminator, it is possible to perform static elimination to such an extent that adverse effects such as scattering and adhesion of charged particles due to electricity do not appear.

  In addition, the self-discharge type static eliminator has a simple structure compared to the voltage application type static eliminator, and further, since the static elimination ions are supplied only when the static elimination target is largely charged, deterioration and wear caused by discharge There are many advantages that can be greatly reduced, and maintenance costs can be greatly reduced.

  Until now, the thing of various structures has been proposed as a self-discharge electrode used for a self-discharge type static eliminator.

  For example, Patent Document 5 proposes a self-discharge electrode in which a large number of convex portions are formed on one long side of a tape made of a sheet containing conductive fibers.

  Patent Document 6 proposes a self-discharge electrode using spiral twisted yarn.

Patent Document 7 proposes a self-discharge electrode in which a non-metallic fiber is coated with a metal coating.
Japanese Patent Laid-Open No. 3-15316 Japanese Patent No. 3686944 Japanese Patent Laid-Open No. 2005-1818 JP 2003-267484 A JP 2003-109793 A JP 2000-73244 A JP-A-8-288093

  All of these self-discharge electrodes are premised on being applied mainly to charged sheet-like or plate-like insulators, or charged bodies distributed in a plane.

  That is, in each of Patent Documents 5 to 7, the static charge is widely distributed three-dimensionally, such as a conduit through which the charged particle group passes or a container in which the charged particle group accumulates, and the electrostatic attraction force. No mention is made of application to an environment in which charged particles move toward the self-discharge electrode.

  The present invention has been made in view of the problems in such a conventional self-discharge type static eliminator, in which an electrostatic charge is widely distributed three-dimensionally, and charged particles are self-discharged by electrostatic attraction. An object of the present invention is to provide a self-discharge type static eliminator that can be applied to an environment that moves toward the environment.

  In order to achieve the above object, the present invention provides a self-discharge type static eliminator used in a space in which electrostatic charges are three-dimensionally distributed, comprising a self-discharge electrode made of a conductive material, There is provided a self-discharge type static eliminator comprising a support that supports a discharge electrode, and air flow generation means that radiates an air flow outside the space with respect to the self-discharge electrode.

  The air flow generating means is preferably attached to the support.

  The present invention further relates to a self-discharge type static eliminator used in a space in which an electrostatic charge is three-dimensionally distributed, wherein the pipe has at least one through-hole formed in the axial direction, and is electrically conductive. The self-discharge electrode is made of a material and has the same number of self-discharge electrodes as the through-holes, and the self-discharge electrodes are arranged such that the tips of the self-discharge electrodes overlap the through-holes corresponding to the self-discharge electrodes in the axial direction of the pipe. Further, a self-discharge type static eliminator attached to the pipe is provided.

  The self-discharge electrode is preferably attached to the pipe such that a tip of the self-discharge electrode overlaps with the center of the through hole corresponding to the self-discharge electrode in the axial direction of the pipe.

  The present invention further relates to a self-discharge type static eliminator used in a space in which an electrostatic charge is three-dimensionally distributed, wherein the pipe has at least one through-hole formed in the axial direction, and is electrically conductive. A self-discharge electrode made of a material, and the self-discharge electrode has the same number of tip portions as the through-holes, and the self-discharge electrode has each of the tip portions in the axial direction of the pipe, A self-discharge type static eliminator attached to the pipe so as to overlap with the corresponding through hole is provided.

  The self-discharge electrode is preferably attached to the pipe so that each of the tip portions overlaps the center of the corresponding through hole in the axial direction of the pipe.

  Preferably, the self-discharge electrode is grounded, or an alternating bias voltage is applied to the self-discharge electrode.

  The present invention is further a self-discharge type static eliminator used in a space in which an electrostatic charge is three-dimensionally distributed, comprising a pipe having at least one through-hole formed in the axial direction, The pipe is made of a conductive material, and a sharp extension is formed at one end of the pipe so that the tip of the extension overlaps the through hole corresponding to the extension in the axial direction of the pipe. A self-discharge type static eliminator that is bent is provided.

  The extension body is preferably bent so that the tip of the extension body overlaps the center of the through hole corresponding to the extension body in the axial direction of the pipe.

  It is preferable that the one end of the pipe has a surface inclined with respect to the central axis of the pipe, and the extension body is formed at a position on the most distal end side of the inclined surface.

  For example, the pipe and the extension body can be configured as a single body.

  The pipe is preferably made of a metal hollow pipe having an outer diameter of 3 mm or less.

  It is preferable that the pipe is grounded or an AC bias voltage is applied to the pipe.

  A fixing means for fixing the pipe to a wall surface defining the space is further provided, and the fixing means fixes the pipe to the wall surface in a state in which outside air outside the space can be supplied to the inside of the pipe. It is preferable that

  It is preferable to further include an insulating layer covering the outer surface of the pipe.

  It is preferable that the pipe has a structure movable or stretchable in the axial direction.

  It is preferable to further include an insulator cover made of an insulating material so as to cover the periphery of the pipe while being separated from the pipe.

  The insulator cover is preferably made of a material that charges the charged body in contact with the insulator cover with a reverse polarity.

  It is preferable that the self-discharge electrode or the pipe is formed to be movable up and down in the space.

  The self-discharge electrode or the pipe is preferably formed to be movable in the horizontal direction in the space.

  The self-discharge type static eliminator according to the present invention includes a driving unit that moves the self-discharge electrode or the pipe in the vertical direction or the horizontal direction, a plurality of potential sensors that measure the potential in the space, and the potential sensor It is preferable that the apparatus further includes a control unit that receives a potential measurement signal indicating a potential and controls the driving unit in accordance with the received potential measurement signal.

  According to the self-discharge type static eliminator according to the present invention, the electrostatic charge can be effectively removed even in an environment where the electrostatic charge is widely distributed three-dimensionally.

  In addition, by emitting an air flow to the self-discharge electrode, it is possible to prevent a situation in which charged particle groups adhere to the self-discharge electrode and interfere with the occurrence of self-discharge.

(First embodiment)
FIG. 1 is a schematic front view showing a self-discharge type static eliminator 100 according to a first embodiment of the present invention.

  As shown in FIG. 1, a self-discharge type static eliminator 100 according to the present embodiment is disposed inside a container 101 that defines a space in which electrostatic charges are three-dimensionally distributed, 110, a support 120 that supports the self-discharge electrode 110 on the wall surface (specifically, the inner wall of the top surface) 111a of the container 101, and air that radiates an air flow outside the container 101 to the self-discharge electrode 110. And a fan 130 as a flow generating means.

  The fan 130 as the air flow generating means is attached to the support body 120 via the support bar 131 so as to blow air from the diagonally upper side with respect to the self-discharge electrode 110.

  A fan 130 serving as an air flow generating means communicates with the outside of the container 101 via a stretchable bellows hose 132, and the outside air of the container 101 is supplied to the fan 130 via the bellows hose 132.

  For example, a pump 230 capable of controlling the discharge amount is arranged outside the container 101, and an air flow generated by the pump 230 and made of air outside the container 101 is supplied to the fan 130 via the bellows hose 132. It has become so.

  The self-discharge electrode 110 is made of a metal wire and is attached to the lower end of the support 120. The self-discharge electrode 110 has a J-shape, and is attached to the support 120 at one end, and the other end forms a free end.

  The self-discharge type static eliminator 100 according to this embodiment having the above-described structure operates as follows.

  It is assumed that charged particles such as charged powder or particles constantly flow into the container 101.

  When the charged particle group flows into the container 101, an electric field is generated inside the container 101 due to the electric charge of the charged particle group. The strength of this electric field increases as the amount of charge flowing into the container 101 increases.

  When the strength of the electric field inside the container 101 becomes sufficiently strong, that is, when the strength of the electric field inside the container 101 exceeds the threshold value, the self-discharge electrode 110 starts self-discharge. Specifically, corona discharge is generated from the tip (free end) of the self-discharge electrode 110.

  Since the corona discharge includes charges (ions) having a polarity opposite to the polarity of the charges existing inside the container 101, the corona discharge combined with the charges existing inside the container 101. Both charges are electrically neutralized. That is, the charge contained in the corona discharge generated from the self-discharge electrode 110 can act as a charge-removing ion for the charge existing inside the container 101.

  Outside air is supplied from the pump 230 to the fan 130 arranged to face the self-discharge electrode 110, and the fan 130 discharges an air flow composed of the outside air of the container 101 to the self-discharge electrode 110.

  For this reason, the static elimination ions contained in the corona discharge generated from the self-discharge electrode 110 are carried by the air flow supplied from the fan 130 and are transported throughout the interior of the container 101, and combined with the charges existing inside the container 101. The electric charge inside the container 101 is electrically neutralized.

  As a result, the charge existing inside the container 101 can be eliminated.

  As described above, according to the self-discharge type static eliminator 100 according to the present embodiment, the electrostatic charge can be effectively removed even in an environment where the electrostatic charge is widely distributed three-dimensionally.

  In addition, since the air flow is radiated from the fan 130 to the self-discharge electrode 110, it is possible to prevent the charged particle group from adhering to the self-discharge electrode 110 and preventing the occurrence of self-discharge.

  The self-discharge type static eliminator 100 according to the present embodiment is not limited to the above structure, and various modifications are possible.

  In the self-discharge type static eliminator 100 according to the present embodiment, the self-discharge electrode 110 is made of a metal wire, but the material of the self-discharge electrode 110 is not limited to metal. Any conductive material can be selected. Further, the shape of the self-discharge electrode 110 is not limited to a linear shape, and may be another shape, for example, a thin plate shape.

  Further, in the self-discharge type static eliminator 100 according to the present embodiment, the fan 130 as the air flow generation means is attached to the support 120. For example, the fan 130 as the air flow generation means is attached to the inner wall of the container 101. It is also possible to attach to.

  In the self-discharge type static eliminator 100 according to the present embodiment, the fan 130 is used as the air flow generating means, but other means may be used instead of the fan 130. For example, the tip of a hollow hose can be arranged to face the self-discharge electrode 110, and an air flow can be supplied to the self-discharge electrode 110 through a hose from a blower arranged outside the container 101.

  From the viewpoint of safety, the self-discharge electrode 110 is preferably grounded. Alternatively, it is preferable that an alternating bias voltage is applied to the self-discharge electrode 110. By applying an AC bias voltage, the strength of the electric field formed at the tip of the self-discharge electrode 110 by the charged particle group is increased, and thus corona discharge can be more effectively caused.

  Further, by providing a solenoid valve at an arbitrary position between the pump 230 and the fan 130, it is possible to intermittently supply the air from the pump 230 to the fan 130.

(Second embodiment)
FIG. 2 is a perspective view of a self-discharge type static eliminator 200 according to the second embodiment of the present invention.

  As shown in FIG. 2, the self-discharge type static eliminator 200 according to the present embodiment includes a pipe 210 having a through hole 211 formed in the axial direction (that is, a hollow pipe) 210 and a self-discharge electrode 220. ing.

  The self-discharge type static eliminator 200 according to the present embodiment is attached to the inner wall of the top surface of the container 101 in the same manner as the self-discharge type static eliminator 100 according to the first embodiment.

  The pipe 210 is a commercially available vinyl chloride pipe.

  The self-discharge electrode 220 is made of a metal wire and is attached to the lower end of the pipe 210. The self-discharge electrode 220 has a quadrant shape, and is attached to the pipe 210 at one end, and the other end forms a free end. The self-discharge electrode 220 is attached to the pipe 210 such that the tip thereof overlaps the through hole 211 in the axial direction of the pipe 210.

  An air flow generation unit 230 is disposed outside the container 101, and an air flow generated by the air flow generation unit 230 and made of air outside the container 101 is supplied to the through hole 211 of the pipe 210. ing. The air flow generation means 230 can be configured as a pump capable of controlling the discharge amount, for example.

  The self-discharge type static eliminator 200 according to this embodiment having the above-described structure operates as follows.

  The self-discharge electrode 220 generates corona discharge from the tip thereof in the same manner as the self-discharge electrode 110 in the first embodiment.

  The air flow generating means 230 discharges an air flow composed of the outside air of the container 101 to the self-discharge electrode 220 through the through hole 211 of the pipe 210.

  For this reason, the charge-removing ions contained in the corona discharge generated from the self-discharge electrode 220 ride on the airflow supplied from the airflow generation means 230 and are transported throughout the interior of the container 101, and the charges existing inside the container 101. To electrically neutralize the charge existing inside the container 101.

  As a result, the charge existing inside the container 101 can be eliminated.

  As described above, according to the self-discharge type static eliminator 200 according to the present embodiment, as in the self-discharge type static eliminator 100 according to the first embodiment, an environment in which electrostatic charges are widely distributed three-dimensionally. Also, the electrostatic charge can be effectively removed.

  The self-discharge type static eliminator 200 according to the present embodiment is not limited to the above structure, and various modifications are possible.

  In the self-discharge type static eliminator 200 according to the present embodiment, the pipe 210 is configured as a commercially available vinyl chloride pipe. However, if the pipe 210 has a hole corresponding to the through hole 211, the pipe 210 is replaced with the pipe 210. Any shape can be used.

  The material of the pipe 210 is not limited to an insulating material, and a pipe made of a conductive material can be used.

  In the self-discharge type static eliminator 200 according to the present embodiment, the self-discharge electrode 220 is disposed so that the tip thereof overlaps the through-hole 211 in the axial direction of the pipe 210. Most preferably, the front end overlaps the center of the through hole 211 in the axial direction of the pipe 210.

  Since the center of the through-hole 211 is the position where the flow velocity of the airflow from the airflow generating means 230 is the highest, the tip of the self-discharge electrode 220 is discharged from the tip of the self-discharge electrode 220 by overlapping the tip of the self-discharge electrode 220 with the center of the through-hole 211. The corona discharge generated can be more effectively diffused.

  FIG. 3 is a cross-sectional view of one application example of the self-discharge type static eliminator 200 according to the present embodiment.

  A powder 332 is accumulated inside the silo 330 via a supply path 331.

  The self-discharge type static eliminator 200 according to the present embodiment is attached to the inner wall 330a of the top surface of the silo 330, and is connected to a pump 334 as an air flow generating means through a stretchable hose 333. That is, the air flow generated by the pump 334 is supplied to the through hole 211 of the pipe 210 of the self-discharge type static eliminator 200 via the hose 333.

  The pipe 210 is positioned so that the tip of the self-discharge electrode 220 overlaps the center axis of the silo 330.

  In the process of accumulating the powder 332 inside the silo 330, an electrostatic field is formed inside the silo 330. When the powder 332 is accumulated and the electric field inside the silo 330 becomes sufficiently strong, that is, when the intensity of the electric field inside the silo 330 exceeds a threshold value, corona discharge is generated from the tip of the self-discharge electrode 220.

  Since the air flow from the pump 334 is discharged through the through hole 211 of the pipe 210 at the forefront of the self-discharge electrode 220 where the corona discharge is generated, the static elimination ions contained in the corona discharge are inside the silo 330. It spreads uniformly and combines with the electrostatic charge of the powder 332 to electrically neutralize the electrostatic charge.

  The central axis of the silo 330 is a position where the space potential due to the charged powder 332 is highest. Since the self-discharge electrode 220 is located on the central axis of the silo 330, the effect of charge removal by corona discharge emitted from the tip of the self-discharge electrode 220 can be maximized.

(Third embodiment)
FIG. 4 is a perspective view of a self-discharge type static eliminator 300 according to the third embodiment of the present invention.

  As shown in FIG. 4, the self-discharge type static eliminator 300 according to the present embodiment has the same number of pipes 310 in which five through holes 311 are formed in the axial direction, that is, five self-discharges. And a discharge electrode 320.

  One of the five through-holes 311 is formed with the center of the bottom surface of the pipe 310 as the center, and the other four are so as to have an equicircular angle on a concentric circle with the center of the bottom surface of the pipe 310 as the center. Is formed.

  The self-discharge type static eliminator 300 according to the present embodiment is attached to the inner wall of the top surface of the container 101 in the same manner as the self-discharge type static eliminator 100 according to the first embodiment.

  The pipe 310 is a commercially available vinyl chloride pipe.

  Each self-discharge electrode 320 is made of a metal wire and is attached to the lower end of the pipe 310. Specifically, each self-discharge electrode 320 has a quadrant shape, and is attached to the pipe 310 at one end thereof and the other end forms a free end. Each self-discharge electrode 320 is attached to the pipe 310 such that the tip of the self-discharge electrode 320 overlaps the through-hole 311 corresponding to the self-discharge electrode 320 in the axial direction of the pipe 310.

  An air flow generating means 230 is disposed outside the container 101, and an air flow generated by the air flow generating means 230 and made of air outside the container 101 is supplied to each through hole 311 of the pipe 310. It has become. The air flow generation means 230 can be configured as a pump capable of controlling the discharge amount, for example.

  The self-discharge type static eliminator 300 according to this embodiment having the above-described structure operates as follows.

  Each self-discharge electrode 320 generates corona discharge from its tip in the same manner as the self-discharge electrode 110 in the first embodiment.

  The air flow generating means 230 discharges an air flow composed of the outside air of the container 101 to each self-discharge electrode 320 through each through hole 311 of the pipe 310.

  For this reason, static elimination ions included in the corona discharge generated from each self-discharge electrode 320 ride on the air flow supplied from the air flow generation means 230 and are transported throughout the interior of the container 101 and exist inside the container 101. Combined with the electric charge, the electric charge existing inside the container 101 is electrically neutralized.

  As a result, the charge existing inside the container 101 can be eliminated.

  As described above, according to the self-discharge type static eliminator 300 according to the present embodiment, the number of self-discharge electrodes 320 is larger than that of the self-discharge type static eliminator 200 according to the second embodiment, so that the efficiency is higher. Thus, the electrostatic charge in the container 101 can be removed.

  The self-discharge type static eliminator 300 according to the present embodiment is not limited to the above structure, and various modifications can be made.

  In the self-discharge type static eliminator 300 according to the present embodiment, the pipe 310 is configured as a commercially available vinyl chloride pipe. However, if the pipe 310 has a hole corresponding to the through hole 311, the pipe 310 is replaced with the pipe 310. Any shape can be used.

  The material of the pipe 310 is not limited to an insulating material, and a pipe made of a conductive material can be used.

  Further, the number of through-holes 311 formed in the pipe 310 and the number of self-discharge electrodes 320 corresponding to each through-hole 311 are not limited to five, and an arbitrary number of two or more can be selected. Is possible.

(Fourth embodiment)
FIG. 5 is a perspective view of a self-discharge type static eliminator 400 according to the fourth embodiment of the present invention, and FIG. 6 is a bottom view of the self-discharge type static eliminator 400 when viewed from the direction A of FIG.

  As shown in FIGS. 5 and 6, the self-discharge type static eliminator 400 according to the present embodiment includes a pipe 410 having four through holes 411 formed in the axial direction and a self-discharge electrode 420. ing.

  The four through holes 411 are formed at equal circumferential angles on concentric circles centering on the center of the bottom surface of the pipe 410.

  The self-discharge electrode 420 includes a linear straight portion 421 that extends downward from the center of the bottom surface of the pipe 410 and four arc-shaped portions 422 that extend in four directions from the tip of the straight portion 421 (the lower end in FIG. 5). Has been. Both the straight portion 421 and the arc-shaped portion 422 are made of metal wires.

  The direction of each arc-shaped portion 422 is adjusted so that the tip of the arc-shaped portion 422 overlaps the through hole 411 corresponding to the arc-shaped portion 422 in the axial direction of the pipe 410.

  The self-discharge type static eliminator 400 according to the present embodiment is attached to the inner wall of the top surface of the container 101 in the same manner as the self-discharge type static eliminator 100 according to the first embodiment.

  The operation principle of the self-discharge type static eliminator 400 according to this embodiment having the above-described structure is the same as that of the self-discharge type static eliminator 200 according to the second embodiment or the self-discharge type static eliminator 300 according to the third embodiment. The self-discharge type static eliminator 400 according to the present embodiment is the same as the self-discharge type static eliminator 300 according to the third embodiment.

(Fifth embodiment)
FIG. 7 is a perspective view of a self-discharge type static eliminator 500 according to the fifth embodiment of the present invention.

  As shown in FIG. 7, the self-discharge type static eliminator 500 according to this embodiment includes a pipe 510 in which a through hole 511 is formed in the axial direction.

  The self-discharge type static eliminator 500 according to the present embodiment is attached to the inner wall of the top surface of the container 101 in the same manner as the self-discharge type static eliminator 100 according to the first embodiment.

  Pipe 510 is made of metal or other conductive material.

  The lower surface of the pipe 510 forms a slope that is inclined with respect to the central axis of the pipe 510. An extension body 520 having a sharp tip 521 is formed at a position on the most tip side of this slope (the lowest position in FIG. 7). The extension 520 is bent so that the tip 521 thereof overlaps the through hole 511 in the axial direction of the pipe 510.

  The extension body 520 can be formed as follows, for example.

  First, a hollow pipe made of a conductive material, for example, a metal is prepared. As such a hollow pipe, a metal hollow pipe having an outer diameter of 3 mm or less is preferable.

  Next, one end of the hollow pipe is sharpened. That is, by cutting the hollow pipe, a thin linear portion is formed from one end of the hollow pipe along the outer surface of the hollow pipe. When cutting the hollow pipe, at the same time, the lower surface of the hollow pipe may be processed into a surface inclined with respect to the central axis of the hollow pipe.

  Next, the linear portion is bent in an arc shape so that the tip of the linear portion overlaps the through hole of the hollow pipe.

  Through the above process, the self-discharge electrode 520 integrated with the pipe 510 can be formed.

  An air flow generation unit 230 is disposed outside the container 101, and an air flow generated by the air flow generation unit 230 and made of air outside the container 101 is supplied to the through hole 511 of the pipe 510. ing. The air flow generation means 230 can be configured as a pump capable of controlling the discharge amount, for example.

  The self-discharge type static eliminator 500 according to this embodiment having the above-described structure operates in the same manner as the self-discharge type static eliminator 200 (FIG. 2) according to the second embodiment, and the self-discharge type static eliminator 500 according to the second embodiment. The same effect as the discharge type static eliminator 200 is obtained.

  The self-discharge type static eliminator 500 according to the present embodiment is not limited to the above structure, and various modifications are possible.

  In the self-discharge type static eliminator 500 according to the present embodiment, the extension body 520 is arranged so that the tip thereof overlaps the through hole 511 in the axial direction of the pipe 510. As in the case of the discharge type static eliminator 200, it is most preferable that the end of the extension body 520 overlaps the center of the through hole 511 in the axial direction of the pipe 510.

  Further, in the self-discharge type static eliminator 500 according to the present embodiment, the lower surface of the pipe 510 is formed as an inclined surface, but it is not always necessary that the lower surface of the pipe 510 is an inclined surface. The lower surface of the pipe 510 may be a plane similar to the upper surface.

  Further, the extension body 520 is not necessarily integral with the pipe 510. For example, the extension body 520 can be manufactured separately from the pipe 510 and then attached to the lower surface of the pipe 510.

(Sixth embodiment)
FIG. 8 is a perspective view of a self-discharge type static eliminator 600 according to the sixth embodiment of the present invention.

  As shown in FIG. 8, the self-discharge type static eliminator 600 according to the present embodiment includes a pipe 610 in which four through holes 611 are formed in the axial direction.

  An extension body 620 similar to the extension body 520 in the fifth embodiment is formed on the lower surface of the pipe 610 corresponding to each through hole 611.

  The self-discharge type static eliminator 600 according to the present embodiment is attached to the inner wall of the top surface of the container 101 in the same manner as the self-discharge type static eliminator 100 according to the first embodiment.

  According to the self-discharge type static eliminator 600 according to the present embodiment, the number of the extension bodies 620 that function as self-discharge electrodes is larger than that of the self-discharge type static eliminator 500 according to the fifth embodiment. Thus, the electrostatic charge in the container 101 can be removed.

(Seventh embodiment)
FIG. 9 is a perspective view of a self-discharge type static eliminator 700 according to the seventh embodiment of the present invention.

  As shown in FIG. 9, the self-discharge type static eliminator 700 according to this embodiment includes a pipe 510 and a fixing unit 710 that fixes the pipe 510 to the wall surface 101 a of the container 101.

  An extension body 520 is formed at the tip (lower end) of the pipe 510. That is, the pipe 510 constitutes the self-discharge type static eliminator 500 (FIG. 7) according to the fifth embodiment.

  The fixing means 710 includes a cylindrical first fixing tool 711, a cylindrical second fixing tool 712 having the same diameter as the first fixing tool 711, and an electrode support 713.

  The electrode support 713 is constituted by a hollow pipe, and the pipe 510 is disposed in the electrode support 713 at a position concentric with the electrode support 713. The pipe 510 is attached to the electrode support 713 through a hollow joint 715.

  The air flow generated by the air flow generating means 230 is supplied to the through hole 511 of the pipe 510 via the hollow electrode support 713.

  The first fixture 711 is formed with a central through hole through which the electrode support 713 passes along the central axis. Similarly, the second support 712 also passes through the electrode support 713 along the central axis. A central through hole is formed.

  A screw hole 711 a extending horizontally to the through hole is formed in the first fixture 711, and the first fixture 711 is fixed to the electrode support 713 by fitting the screw 716 into the screw hole 711 a. Is done.

  In the second fixture 712, two through holes 712a and 712b extending in parallel with the central through hole are formed around the central through hole.

  When the first fixture 711 is placed on the second fixture 712 on the bottom surface of the first fixture 711 (the surface facing the second fixture 712), two through holes 712a and 712b are provided. Two screw holes 711c and 711d extending on the straight line are formed.

  The second fixing tool 712 is fixed to the first fixing tool 711 by fitting the screws 717a and 717b into the two through holes 712a and 712b and the two screw holes 711c and 711d, respectively.

  The self-discharge type static eliminator 700 according to this embodiment having the above-described structure is used as follows.

  The wall surface 101a of the container 101 is formed with a hole through which the electrode support 713 is passed and a hole into which the two screws 717a and 717b are fitted.

  First, the pipe 510 is attached to the tip of the electrode support 713 through the hollow joint 715.

  Next, the electrode support 713 is fitted into the central through hole of the second fixture 712.

  In this state, the electrode support 713 is fitted into the hole for the electrode support 713 from the inside of the container 101.

  Next, the electrode support 713 is fitted into the through hole of the first fixture 711 outside the container 101.

  Next, the two screws 717 a and 717 b are fitted into the through holes 712 a and 712 b and the screw holes 711 c and 711 d to fix the second fixing tool 712 to the first fixing tool 711. In this state, the wall surface 101 a of the container 101 is sandwiched between the second fixture 712 and the first fixture 711.

  Next, the screw 716 is fitted into the screw hole 711 a to fix the first fixture 711 to the electrode support 713.

  As described above, the self-discharge type static eliminator 700 according to this embodiment is fixed to the wall surface 101 a of the container 101.

  The air flow generated by the air flow generation means 230 disposed outside the container 101 passes through the electrode support 713 and is discharged from the tip of the extension body 520 through the through hole 511 of the pipe 510. Radiated against.

  According to the self-discharge type static eliminator 700 according to this embodiment, if the screw 716 is loosened, the electrode support 713 and thus the pipe 510 can be slid up and down, and the electrode support 713 is moved up and down. Thereafter, by tightening the screw 716, the electrode support 713 and thus the pipe 510 can be fixed at a desired position.

  Accordingly, the position of the extension 520 formed at the tip of the pipe 510, that is, the position where the corona discharge is generated can be moved up and down in the container 101, and the corona discharge is performed at the position where the electric field strength is highest in the container 101. Can be generated.

  In the self-discharge type static eliminator 700 according to this embodiment, the fixing means 710 for fixing the pipe 510 to the wall surface 101a of the container 101 is composed of the first fixing tool 711 and the second fixing tool 712. The structure of 710 is not limited to this. As long as the electrode support 713 can be attached to the wall surface 101a of the container 101 so that the electrode support 713 can move up and down, the fixing means 710 can have any structure.

  Further, in the self-discharge type static eliminator 700 according to this embodiment, the electrode support 713 and the pipe 510 are connected to each other via the hollow joint 715, but the electrode support 713 and the pipe 510 are integrated. A structure is also possible.

(Eighth embodiment)
FIG. 10 is a perspective view of a self-discharge type static eliminator 800 according to the eighth embodiment of the present invention.

  As shown in FIG. 10, the self-discharge type static eliminator 800 according to the present embodiment enables vertical movement of the self-discharge type static eliminator 200 in addition to the self-discharge type static eliminator 200 according to the second embodiment. A telescopic unit 810 is provided.

  The telescopic unit 810 includes a hollow cylindrical first pipe 811, a hollow cylindrical pipe, a second pipe 812 having an outer diameter equal to the inner diameter of the first pipe 811, and a hollow cylindrical pipe. And a third pipe 813 having an inner diameter equal to the outer diameter of the second pipe 812.

  The inner diameter of the third pipe 813 is selected to be equal to the outer diameter of the pipe 210 of the self-discharge type static eliminator 200.

  That is, the first pipe 811, the second pipe 812, the third pipe 813, and the pipe 210 have a “nesting type” structure, and are mutually stretchable.

  Screws 814, 815, and 816 are respectively attached in the horizontal direction near the lower end of the first pipe 811 and near the upper end and the lower end of the third pipe 813. By tightening the screw 814, the first pipe 811 is connected to the second pipe. The third pipe 813 can be fixed to the second pipe 812 by tightening the screw 815, and the third pipe 813 can be fixed to the pipe 210 by tightening the screw 816. It has become.

  That is, the total length of the expansion / contraction unit 810 can be adjusted to a desired length by the screws 814, 815, and 816.

  Also with the self-discharge type static eliminator 800 according to the present embodiment, as with the self-discharge type static eliminator 700 according to the seventh embodiment, the position of the self-discharge electrode 220 formed at the tip of the pipe 210, that is, corona discharge. Can be moved up and down in the container 101, and corona discharge can be generated at a position where the electric field strength is highest in the container 101.

(Ninth embodiment)
FIG. 11 is a perspective view of a self-discharge type static eliminator 900 according to the ninth embodiment of the present invention.

  As shown in FIG. 11, the self-discharge type static eliminator 900 according to the present embodiment additionally includes an insulator cover 910 as compared with the self-discharge type static eliminator 700 according to the seventh embodiment.

  The insulator cover 910 is made of an insulating material and has a diameter sufficiently larger than the diameter of the pipe 510 or the electrode support 713. As shown in FIG. 11, the insulator cover 910 is disposed so as to be concentric with the pipe 510 or the electrode support 713 without contacting the pipe 510 or the electrode support 713.

  When the self-discharge electrode is placed in the charged particle group, the electric field is concentrated on the self-discharge electrode, causing a problem that the fine charged particle group adheres due to electrostatic attraction.

  Further, if insulating charged particles adhere to the tip of the self-discharge electrode, the electric field at the tip of the self-discharge electrode is weakened, and self-discharge itself does not occur, which may cause a reduction in the charge removal effect.

  By providing the insulator cover 910, it becomes possible to prevent the charged particles having an electrostatic charge from adhering to the extension body 520 functioning as a self-discharge electrode to some extent, and the self-discharge function of the extension body 520 is reduced. It is possible to prevent.

  In addition, since the electrostatic force of the charged particle group adhering to the outer wall of the insulator cover 910 becomes weaker as the diameter of the insulator cover 910 is larger, the effect of preventing the self-discharge function of the extension body 520 from being lowered is increased. However, if the diameter of the insulator cover 910 becomes too large, the charged particle group can easily enter the inside of the insulator cover 910, so it is necessary to select an appropriate diameter.

  In the self-discharge type static eliminator 900 according to the present embodiment, the insulator cover 910 has a cylindrical shape, but the shape of the insulator cover 910 is not limited to a cylindrical shape. As long as the charged particles can be prevented from adhering to the pipe 510 or the electrode support 713, the insulator cover 910 can have any shape.

  Further, instead of the insulator cover 910, an insulating layer covering the outer surface of the pipe 510 or the electrode support 713 can be used. Such an insulating layer can be made of, for example, a resin.

  The insulator cover 910 is preferably made of a material that charges the charged particle group in contact with the insulator cover 910 to a reverse polarity.

  When the insulator cover 910 is made of such a material, the charge amount of the charged particle group can be reduced.

(Tenth embodiment)
FIG. 12 is a schematic cross-sectional view of a self-discharge type static eliminator 1000 according to the tenth embodiment of the present invention.

  The self-discharge type static eliminator 1000 according to the present embodiment is attached to the wall surface 101a so as to extend downward from the wall surface 101a of the container 101 as compared with the self-discharge type static eliminator 100 (FIG. 1) according to the first embodiment. And a movable body 1020 that can move up and down with respect to the pole 1010.

  The pole 101 is molded from a resin or other insulating material.

  The self-discharge type static eliminator 100 according to the first embodiment is attached to a moving body 1020.

  The moving body 1020 incorporates a motor (not shown) that can be driven by a radio signal, and operates a radio signal transmitter (not shown) from the outside of the container 101 to rotate the motor forward or backward. The moving body 1020 moves up and down on the pole 1010.

  As described above, according to the self-discharge type static eliminator 1000 according to the present embodiment, the movable body 1020 can be moved up and down, and the self-discharge electrode 110 can be positioned at a desired height. Corona discharge can be generated at a position where the intensity is high.

(Eleventh embodiment)
FIG. 13 is a schematic view showing a self-discharge type static eliminator 1100 according to the eleventh embodiment of the present invention. FIG. 13 is a plan view of the wall surface 101 a when looking up the wall surface 101 a from the bottom surface of the container 101.

  In the present embodiment, a cross-shaped slit 102 is formed on the wall surface 101 a of the container 101.

  The self-discharge type static eliminator 1100 according to the present embodiment additionally includes a horizontal moving body 1110 that is movable along the slit 102 as compared with the self-discharge type static eliminator 1000 (FIG. 12) according to the tenth embodiment. In preparation.

  The pole 1010 in the tenth embodiment is attached to the horizontal moving body 1110.

  The horizontal moving body 1110 incorporates a motor (not shown) that can be driven by a radio signal, and operates a radio signal transmitter (not shown) from the outside of the container 101 to rotate the motor forward or backward. Thus, the moving body 1110 moves along the slit 102 in the wall surface 101a.

  As described above, according to the self-discharge type static eliminator 1100 according to the present embodiment, the mobile body 1110 is moved in the wall surface 101a, and the mobile body 1020 is further moved up and down, whereby the self-discharge electrode 110 is placed in the container. It can be moved to a position where the electric field strength is greatest in 101, and corona discharge can be generated most efficiently.

  Note that the self-discharge type static eliminator 1100 according to the present embodiment can also be applied to self-discharge electrodes according to other embodiments other than the self-discharge type static eliminator 1000 according to the tenth embodiment. .

(Twelfth embodiment)
FIG. 14 is a schematic view showing a self-discharge type static eliminator 1200 according to the twelfth embodiment of the present invention.

  As shown in FIG. 14, the self-discharge type static eliminator 1200 according to the present embodiment has a plurality of potentials for measuring the internal potential of the container 101 as compared with the self-discharge type static eliminator 1000 according to the tenth embodiment. The sensor 1210 and the potential measurement signal indicating the potential inside the container 101 are received from the potential sensor 1210, and the wireless signal transmitter 1021 that transmits a wireless signal to the moving body 1020 is controlled according to the received potential measurement signal. And a control device 1220.

  In the present embodiment, the operation of the air flow generation means 230 is also controlled by the control device 1220.

  The potential sensor 1210 is regularly arranged in the vertical direction on the vertical wall 101b of the container 101, for example. Each potential sensor 1210 measures a nearby potential and transmits a potential measurement signal indicating the magnitude of the measured potential to the control device 1220.

  When receiving the potential measurement signal from each potential sensor 1210, the control device 1220 specifies the potential measurement signal indicating the largest potential among the potential measurement signals.

  Next, the control device 1220 transmits a drive signal to the wireless signal transmitter 1021 to transmit the wireless signal 1022 from the wireless signal transmitter 1021 to the moving body 1020.

  The mobile body 1020 that has received the wireless signal 1022 moves to the same height as the potential sensor 1210 that has transmitted the potential measurement signal indicating the largest potential among the potential measurement signals.

  Next, the control device 1220 starts the operation of the air flow generation unit 230 and starts supplying the air flow to the fan 130.

  As described above, according to the self-discharge type static eliminator 1200 according to the present embodiment, the self-discharge electrode 110 can be automatically moved to a position where the electric field strength is greatest in the container 101.

  Note that the self-discharge type static eliminator 1200 according to the present embodiment can also be applied to the self-discharge type static eliminator 1100 according to the eleventh embodiment.

  In this case, the potential sensors 1210 are arranged in a matrix on the vertical wall 101b of the container 101. That is, the potential sensor 1210 is regularly arranged on the vertical wall 101b in the vertical direction and the horizontal direction.

  When receiving the potential measurement signal from each potential sensor 1210, the control device 1220 specifies the potential measurement signal indicating the highest potential in the vertical direction and the potential measurement signal indicating the highest potential in the horizontal direction.

  Next, the control device 1220 transmits a drive signal to the wireless signal transmitter 1021 and causes the wireless signal transmitter 1021 to transmit the wireless signal 1022 to the moving body 1020 and the horizontal moving body 1110.

  The mobile body 1020 that has received the wireless signal 1022 moves to the same height as the potential sensor 1210 that has transmitted the potential measurement signal indicating the greatest potential in the vertical direction.

  The horizontal moving body 1110 that has received the wireless signal 1022 moves to a position facing the potential sensor 1210 that has transmitted the potential measurement signal that indicates the highest potential in the horizontal direction.

  Next, the control device 1220 starts the operation of the air flow generation unit 230 and starts supplying the air flow to the fan 130.

  As described above, the self-discharge type static eliminator 1200 according to this embodiment is also applied to the self-discharge type static eliminator 1100 according to the eleventh embodiment. The self-discharge electrode 110 can be moved automatically.

  In addition, by arranging the potential sensor 1210 on the vertical wall adjacent to the vertical wall 101b as well as the vertical wall 101b of the container 101, the self-discharge electrode 110 can be moved three-dimensionally. It is possible to move the self-discharge electrode 110 automatically to a position where the electric field strength is the highest in FIG.

  FIG. 15 is a schematic view showing a self-discharge type static eliminator 1300 according to a modification of the self-discharge type static eliminator 1200 according to the twelfth embodiment of the present invention.

  In the self-discharge type static eliminator 1200 according to the twelfth embodiment, the self-discharge type static eliminator 100 according to the first embodiment is used. The self-discharge type static eliminator 200 according to the second embodiment is used.

  The pipe 210 of the self-discharge type static eliminator 200 passes through the wall surface 101a of the container 101 under a slidable state, and one end (upper end) thereof is connected to the air flow generating means 230 via the bellows hose 131. .

  A driver 1320 is disposed on the outer wall side of the wall surface 101 a of the container 101. The pipe 210 passes through a through hole formed in the center of the driving body 1320. The driving body 1320 contains a roller unit in contact with the outer peripheral surface of the pipe 210, and the pipe 210 can be moved up and down by rotating the roller unit forward or backward.

  The driving body 1320 is driven by the driving circuit 1310, and the driving circuit 1310 is controlled by the control device 1220.

  The self-discharge type static eliminator 1300 according to this modification operates as follows.

  When receiving the potential measurement signal from each potential sensor 1210, the control device 1220 specifies the potential measurement signal indicating the largest potential among the potential measurement signals.

  Next, the control device 1220 transmits a drive signal to the drive circuit 1310 to drive the drive body 1320. As a result, the driver 1320 moves the pipe 210 up and down so that the self-discharge electrode 220 has the same height as the potential sensor 1210 that has transmitted the potential measurement signal indicating the highest potential among the potential measurement signals. .

  Next, the control device 1220 starts the operation of the air flow generation unit 230 and starts supplying the air flow to the through hole 211 of the pipe 210.

  Also with the self-discharge type static eliminator 1300 according to this modification, the same effect as that of the self-discharge type static eliminator 1200 according to the twelfth embodiment can be obtained.

FIG. 1 is a schematic front view showing a self-discharge type static eliminator according to a first embodiment of the present invention. FIG. 2 is a perspective view of a self-discharge type static eliminator according to the second embodiment of the present invention. FIG. 3 is a cross-sectional view of one application example of the self-discharge type static eliminator according to the second embodiment of the present invention. FIG. 4 is a perspective view of a self-discharge type static eliminator according to the third embodiment of the present invention. FIG. 5 is a perspective view of a self-discharge type static eliminator according to the fourth embodiment of the present invention. FIG. 6 is a bottom view of the self-discharge type static eliminator according to the fourth embodiment of the present invention when viewed from the direction A in FIG. FIG. 7 is a perspective view of a self-discharge type static eliminator according to the fifth embodiment of the present invention. FIG. 8 is a perspective view of a self-discharge type static eliminator according to the sixth embodiment of the present invention. FIG. 9 is a perspective view of a self-discharge type static eliminator according to the seventh embodiment of the present invention. FIG. 10 is a perspective view of a self-discharge type static eliminator according to the eighth embodiment of the present invention. FIG. 11 is a perspective view of a self-discharge type static eliminator according to the ninth embodiment of the present invention. FIG. 12 is a schematic sectional view of a self-discharge type static eliminator according to the tenth embodiment of the present invention. FIG. 13 is a schematic view showing a self-discharge type static eliminator according to the eleventh embodiment of the present invention. FIG. 14 is a schematic view showing a self-discharge type static eliminator according to a twelfth embodiment of the present invention. FIG. 15 is a schematic view showing a self-discharge type static eliminator according to a modification of the self-discharge type static eliminator according to the twelfth embodiment of the present invention.

Explanation of symbols

100 Self-discharge type static eliminator 101 according to the first embodiment of the present invention Container 110 Self-discharge electrode 120 Support body 130 Fan 200 Self-discharge type static eliminator 210 according to the second embodiment of the present invention Pipe 211 Through-hole 220 Self Discharge electrode 230 Air flow generating means 300 Self-discharge type static eliminator 310 pipe 311 according to the third embodiment of the present invention Pipe 311 Through-hole 320 Self-discharge electrode 400 Self-discharge type static eliminator 410 pipe according to the fourth embodiment of the present invention 411 Through-hole 420 Self-discharge electrode 500 Self-discharge type static eliminator 510 pipe 511 Through hole 520 Extension body 600 according to the fifth embodiment of the present invention Self-discharge type static eliminator 610 Pipe 611 according to the sixth embodiment of the present invention Through-hole 620 Extension body 700 Self-discharge type static eliminator 710 fixing means 800 according to the seventh embodiment of the present invention Self-discharge type static eliminator 810 according to the eighth embodiment Extendable unit 900 Self-discharge type static eliminator 910 according to the ninth embodiment of the present invention Insulator cover 1000 Self-discharge type static eliminator according to the tenth embodiment of the present invention Electric device 1010 Pole 1020 Moving body 1100 Self-discharge type static eliminator 102 according to the eleventh embodiment of the present invention Slit 1110 Horizontal moving body 1200 Self-discharge type static eliminator 1220 according to the twelfth embodiment of the present invention Control device 1300 Self-discharge type static eliminator 1320 according to a modification of the self-discharge type static eliminator according to the twelfth embodiment of the present invention

Claims (21)

A self-discharge type static eliminator used in a space in which an electrostatic charge is distributed three-dimensionally,
A self-discharge electrode made of a conductive material;
A support for supporting the self-discharge electrode;
An air flow generating means for radiating an air flow outside the space with respect to the self-discharge electrode;
Self-discharge type static eliminator consisting of The self-discharge type static eliminator according to claim 1, wherein the air flow generating means is attached to the support. A self-discharge type static eliminator used in a space in which an electrostatic charge is distributed three-dimensionally,
A pipe in which at least one through hole is formed in the axial direction;
Made of a conductive material, the same number of self-discharge electrodes as the through holes,
Consists of
The self-discharge electrode is a self-discharge type static eliminator attached to the pipe so that a tip of the self-discharge electrode overlaps the through hole corresponding to the self-discharge electrode in the axial direction of the pipe. The self-discharge electrode is attached to the pipe so that a tip of the self-discharge electrode overlaps a center of the through hole corresponding to the self-discharge electrode in an axial direction of the pipe. 3. The self-discharge type static eliminator according to 3. A self-discharge type static eliminator used in a space in which an electrostatic charge is distributed three-dimensionally,
A pipe in which at least one through hole is formed in the axial direction;
A self-discharge electrode made of a conductive material;
Consists of
The self-discharge electrode has the same number of tip portions as the through-holes,
The self-discharge electrode is a self-discharge type static eliminator attached to the pipe such that each of the tip portions overlaps the corresponding through hole in the axial direction of the pipe. The said self-discharge electrode is attached to the said pipe so that each of the said front-end | tip part may overlap with the center of the said corresponding through-hole in the axial direction of the said pipe. Self-discharge type static eliminator. The self-discharge type static eliminator according to any one of claims 1 to 6, wherein the self-discharge electrode is grounded or an alternating bias voltage is applied to the self-discharge electrode. A self-discharge type static eliminator used in a space in which an electrostatic charge is distributed three-dimensionally,
It consists of a pipe in which at least one through hole is formed in the axial direction,
The pipe is made of a conductive material,
A pointed extension is formed at one end of the pipe, and the extension is bent so that the tip of the extension overlaps the through hole corresponding to the extension in the axial direction of the pipe. Static eliminator. The self-discharge according to claim 8, wherein the extension body is bent so that a tip end of the extension body overlaps a center of the through hole corresponding to the extension body in an axial direction of the pipe. Type static eliminator. The said one end of the said pipe has the surface inclined with respect to the central axis of the said pipe, The said extension body is formed in the position of the most front end side of the said inclined surface, or 9. The self-discharge type static eliminator according to 9. The self-discharge type static eliminator according to any one of claims 8 to 10, wherein the pipe and the extension are integrated. The self-discharge type static eliminator according to any one of claims 8 to 11, wherein the pipe comprises a metal hollow pipe having an outer diameter of 3 mm or less. The self-discharge type static eliminator according to any one of claims 8 to 12, wherein the pipe is grounded or an AC bias voltage is applied to the pipe. A fixing means for fixing the pipe to a wall surface defining the space is further provided, and the fixing means fixes the pipe to the wall surface in a state in which outside air outside the space can be supplied to the inside of the pipe. The self-discharge type static eliminator according to any one of claims 3 to 13, characterized in that: The self-discharge type static eliminator according to any one of claims 3 to 14, further comprising an insulating layer covering an outer surface of the pipe. The self-discharge type static eliminator according to any one of claims 3 to 15, wherein the pipe has a structure movable or expandable in an axial direction thereof. The self-discharge type static eliminator according to any one of claims 3 to 16, further comprising an insulator cover that is separated from the pipe and covers the periphery of the pipe and made of an insulating material. The self-discharge type static eliminator according to claim 17, wherein the insulator cover is made of a material that charges a charged body in contact with the insulator cover with a reverse polarity. The self-discharge type static eliminator according to any one of claims 1 to 18, wherein the self-discharge electrode or the pipe is formed to be movable up and down in the space. The self-discharge type static eliminator according to any one of claims 1 to 19, wherein the self-discharge electrode or the pipe is formed to be movable in the horizontal direction in the space. Driving means for moving the self-discharge electrode or the pipe vertically or horizontally;
A plurality of potential sensors for measuring the potential in the space;
Control means for receiving a potential measurement signal indicating the potential from the potential sensor, and controlling the driving means in accordance with the received potential measurement signal;
The self-discharge type static eliminator according to any one of claims 1 to 20, further comprising:

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