JP2010262777A - Method of eliminating static electricity, and static eliminator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a static eliminator safely and surely eliminating static electricity, and also to provide a method of eliminating static electricity. <P>SOLUTION: This static eliminator 10 is equipped with: a body case 11; an X ray irradiating part 12 disposed in the body case 11, and an electrode 13 mounted to the vicinity of the entrance of the X ray irradiating part 12. A conical weak plasma environment W is formed by irradiating X rays from the X ray irradiating part 12. The electrode 13 is connected to an earth E to maintain zero volt. If an objective material 15 charged with static electricity is disposed in the weak plasma environment W, electric charges charged in the objective material 15 are drawn near the electrode 13 maintained at zero volt, and static electricity is thereby eliminated from the objective material 15. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a static electricity removal method and a static electricity removal apparatus for removing static electricity by drawing a charge of a charged object to an electrode side in a non-contact manner in a weak plasma environment.

  Generally, when a hand is brought into contact with various places, for example, a hotel door knob or a vehicle door, an electric shock may occur due to static electricity. These phenomena occur when static electricity is charged on the human body due to some friction, and the static electricity is discharged when touching the conductor. Various improvements have been made to prevent this. For example, Patent Document 1 proposes a static eliminator in which a static input electrode and a static output electrode are spaced apart via a resistor in a hollow case made of an insulating material. This static eliminator is a non-contact discharge electrode and a contact discharge electrode arranged in parallel. While the charged user touches the static input electrode, the static output electrode is placed near the door bracket. By approaching, a corona discharge is generated and gradually discharged, and further, the contact-type electrostatic output electrode touches the ground to completely discharge and remove static electricity.

  Further, Patent Document 2 discloses a device that adjusts positive charges or negative charges in a non-contact manner under a weak plasma environment. This technology is known as an air purification system centered on the supply of negative ion-enhanced air that leads to the effects of sterilization, dust removal and deodorization. In other words, by adjusting the polarity and level of the voltage applied to the electrode of the appropriate shape placed in the X-ray irradiation area, the same amount of positive ions and negative ions generated by the ionizing action of the X-rays can be reversed. Sex ions are adsorbed to the electrode in a chain reaction, creating a state in which there are many ions of the same sex as the electrode in the entire X-ray irradiation region. By utilizing this, it has been possible to provide an air cleaning device and a static eliminating device.

JP 2003-45695 A Japanese Patent No. 3049542

  However, in order to remove static electricity from a static-charged substance, it is necessary to reliably remove the static electricity and to perform it safely. The content described in Patent Document 1 is such that after a corona discharge is generated by bringing a static eliminator close to a substance in a non-contact manner, the charge is released by contact. When the static eliminator is brought into contact with a substance, the hand may be touched and there is a possibility of receiving an electric shock. Moreover, the technique of patent document 2 applies a positive or negative charge to an electrode, and aims at biasing the X-ray irradiation area to a positive charge or a negative charge. Therefore, if the object is positively charged, if an electrode to which a positive charge is applied is used, a further positive charge is given. Conversely, if the object is positively charged, a negative charge is applied. If an electrode to which a charge is applied is used, the voltage can be once reduced to 0 volts, but after that, a negative charge is continuously applied, so that a phenomenon of reverse charging is caused, and static electricity is surely removed. I could not.

  The present invention solves the above-described problems, and an object thereof is to provide a static electricity removing method and a static electricity removing apparatus that can reliably remove static electricity from a target substance charged with static electricity.

  The invention according to claim 1 in the static electricity removing method according to the present invention is such that an environment around a substance charged with static electricity is formed in a weak plasma environment, and an electrode of 0 volt is disposed in the plasma environment. Charges charged in the substance are attracted to the electrode to remove static electricity from the substance.

  The invention according to claim 2 in the static eliminator according to the present invention comprises a weak plasma environment forming means for forming a weak plasma environment, and an electrode arranged in the weak plasma environment and maintaining 0 volts, A material is characterized in that a weak plasma environment is formed with respect to the charged substance, and the charge is moved and removed from the charged substance.

  The invention described in claim 3 relates to the invention of claim 2, characterized in that the weak plasma environment forming means is formed so as to be able to irradiate X-rays.

  The invention described in claim 4 is characterized in that the electrode is connected to ground.

  According to the static electricity removal method of claim 1 of the present invention, the charged substance that is disposed in the weak plasma environment has a potential difference between the electrodes disposed in the weak plasma environment of 0 volts. The charged electric charge is attracted to the 0 volt electrode and moves to the electrode side. As a result, the static electricity is removed from the target substance in a non-contact manner without touching the hand, so that the static electricity removal operation can be performed safely.

  According to the static eliminator of the second aspect, the apparatus is configured to include the weak plasma environment forming means and the 0 volt electrode. The charged substance causes a potential difference with respect to the 0 volt electrode, and the charged charge is attracted to the 0 volt electrode and moves. Therefore, static electricity is removed from the substance. Therefore, since the voltage of the electrode is 0 volts, the charge on the target substance is always moved to the electrode side, and the static electricity removing operation can be reliably performed without contact.

  According to the configuration of the third aspect, the weak plasma environment forming means includes an irradiation source that irradiates X-rays. By irradiating X-rays, a weak plasma environment is formed in air that is originally insulated. Can do. By forming a weak plasma environment, the charge can move, and the charge charged in the substance can be attracted to the 0 volt electrode. As a result, the charge is transferred from the charged substance, so that static electricity can be removed. Since a weak plasma environment is formed in a non-contact manner to move charges, static electricity can be removed safely and reliably.

  According to the fourth aspect of the present invention, since the electrode holding 0 volt is connected to the ground, the electric charge attracted to the 0 volt electrode always moves into the ground. Therefore, continuously generated charges, such as a belt rotated by a pulley made of a conductive material, always move the generated charges toward the ground against static electricity generated by continuous friction. In particular, the static electricity generated continuously can be removed.

It is a simplified perspective view which shows the static eliminating device by this invention.

  Next, an embodiment of a static electricity removal method and a static electricity removal apparatus according to the present invention will be described with reference to the drawings. FIG. 1 shows a static eliminating device 10 according to an embodiment, which forms a weak plasma environment with X-rays. In the main body case 11 of the static electricity removing apparatus 10, an X-ray irradiation unit 12 that irradiates X-rays, an electrode 13 that is disposed near the entrance of the X-ray irradiation unit 12 within the X-ray irradiation range, and is attached to the main body case 11, It has. Electrode 13 is connected to ground E and is at 0 volts. In the case of the embodiment, a vacuum tube (not shown) is arranged to irradiate X-rays. When the X-ray is irradiated, a weak plasma environment W is formed around the X-ray. The range of the weak plasma environment W formed by irradiating X-rays is formed within a conical range as shown by a two-dot chain line in FIG. Within this range, the target substance 15 having a positive charge or a negative charge and being charged with static electricity is disposed. Although the target substance 15 is formed in a disk shape in the illustrated example, the size and shape of the target substance 15 are not limited as long as they are conductors. For example, it may be a door knob, a vehicle body for painting, or a belt or pulley that rotates continuously.

  Next, the operation of the static eliminator 10 configured as described above will be described.

  As described above, X-rays form a weak plasma environment W within the irradiation range. In the weak plasma environment W formed here, positive and negative ions form the same amount of air mass. The charge (plus charge or minus charge) can move in the weak plasma environment W.

  The 0 volt electrode 13 disposed in the weak plasma environment W is connected to the ground E and always maintains 0 volt. The fact that the electrode 13 is 0 volt means that a potential difference is generated between the target material 15 and the electrode 13 when the target material 15 disposed in the weak plasma environment W is charged. 15 charges will be drawn toward the 0 volt electrode 13. Accordingly, static electricity is removed from the target substance 15.

  In addition, the fact that the electrode 13 is at 0 volts also means that the positive charge and the negative charge are present in the same amount. That is, when the target substance 15 charged with a positive charge or a negative charge is arranged in the weak plasma environment W, for example, if the target substance 15 has a positive (plus charge) polarity, On the other hand, an opposite charge, that is, a negative (minus charge) is attracted to make the electrode 13 neutral. Further, if the target substance 15 is negative (negative charge), an opposite charge, that is, positive (plus charge) is attracted to the electrode 13, and the electrode 13 tends to become neutral. Therefore, in any of the target substances 15 charged with either positive or negative charge, either plus or minus charge is attracted to the electrode 13 and the static electricity can be removed.

  Furthermore, since the electrode 13 is connected to the ground E, even if the charge is continuously drawn from the charged target material 15 toward the electrode 13 having 0 volts, the charge moves into the ground. , The state is always maintained at 0 volts. Further, even if the target substance 15 continuously generates a positive charge or a negative charge, it is possible to continuously attract the opposite charge from the target substance 15, so that the continuous charge as generated by the belt conveyor is possible. Also, it can be suitably used.

  As described above, in the static electricity removal method or the static electricity removal apparatus 10 according to the embodiment, the weak plasma environment W is formed within the X-ray irradiation range by irradiating non-contact means, for example, X-rays. When the 0 volt electrode 13 is arranged in the weak plasma environment W and the charged target substance 15 is arranged, the electric charge charged in the target substance 15 is attracted to the 0 volt electrode, and the electrostatic charge is generated from the target substance 15. Is removed. Therefore, since static electricity can be removed without contacting the human body, for example, a door knob or the like can be securely grasped, and dust or the like is not attached to a vehicle to be painted.

  In addition, what forms a weak plasma environment does not need to be by irradiating an X-ray.

10, Static eliminator 12, X-ray irradiation unit 13, Electrode 15, Target substance W, Weak plasma environment E, Earth

Claims (4)

  The environment around the electrostatically charged substance is formed in a weak plasma environment, and an electrode of 0 volts is disposed in the plasma environment, whereby the electric charge charged in the substance is drawn to the electrode, and the substance Static electricity removal method characterized by removing static electricity from water.   A weak plasma environment forming means for forming a weak plasma environment and an electrode that is arranged in the weak plasma environment and maintains 0 volts, and forms a weak plasma environment with respect to a substance charged with static electricity. An apparatus for removing static electricity, characterized in that it is configured to remove charges from a charged substance.   3. The static eliminator according to claim 2, wherein the weak plasma environment forming means is formed so that X-rays can be irradiated. 4. The static eliminator according to claim 2, wherein the electrode is connected to ground.

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