JP2011129351A - Ac high-voltage radiation system static eliminator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an AC high-voltage radiation system static eliminator capable of applying a sine wave AC high-voltage on a radiation electrode without providing a grounding electrode opposed to the radiation electrode, radiating an AC electric line of a force from the radiation electrode, and destaticizing an electrostatic charged object. <P>SOLUTION: A sine wave AC-high voltage is applied to one radiation electrode 6 which is formed of heat-treated carbon fiber threads 16, of which the fine diameter carbon fiber threads are heat-treated at a high temperature, converged tightly into a brush shape, or on a plurality of radiation electrodes 6 arranged at intervals which are formed of the heat-treated carbon fiber threads, and at the periphery of the radiation electrode not equipped with a grounding electrode opposed to the radiation electrode 6, charged particles 8 charged in positive and negative are generated alternately and equivalently, and the positive/negative charged particles 8 are blasted to the electrostatic charged object 15 by a wind force by a blower fan 13 as a carrier so as to static-eliminate the charged object 15. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

The present invention, unlike a corona discharge type static eliminator having a discharge electrode and a ground (opposite) electrode, applies a sinusoidal AC high voltage to the radiation electrode without providing a ground electrode facing the radiation electrode, An AC electric field line is radiated from the radiating electrode to generate positively charged particles and negatively charged particles around the radiating electrode alternately and in equal amounts, and the charged particles are blown by a blower fan. The present invention relates to an AC high-voltage radiation type static eliminator that blows air to a charged object and neutralizes the charged object.

Conventionally, in a manufacturing factory or the like, in order to remove the electrostatic charge of a charged object, a high voltage is applied between the discharge electrode and the ground (opposite) electrode to generate corona discharge and ionize the air. It has been carried out to neutralize charged objects.

However, when a high voltage is applied between the discharge electrode and the ground electrode to cause corona discharge, a large amount of ozone is generated, which is harmful to the human body.

In addition, when the electromagnetic wave is generated by corona discharge and the charged object is a semiconductor element or electronic device, the electromagnetic wave may malfunction, and when the electromagnetic wave is strong, the semiconductor element or electronic device may be destroyed.

On the other hand, by applying an AC high voltage to the discharge electrode without providing a ground electrode, positive ions and negative ions are generated around the discharge electrode, and the ions are blown to a charged object by a blower fan. An AC electric field line radiation type static eliminator that neutralizes the electric charge is disclosed in the following Patent Document 1 and is known.

JP 2005-183350 A

The static eliminator disclosed in Patent Document 1 generates a positive ion and a negative ion at the periphery of the discharge electrode by applying an alternating high voltage to the discharge electrode, and blows the ions to a charged object by a blower fan. Although it is described that the charged object is neutralized, the details of the mechanism by which the ions move to the charged object are unclear and the ground electrode is not provided. There was a problem that the neutralization effect could not be sufficiently confirmed depending on only the description.

Furthermore, since the discharge electrode used in the static eliminator disclosed in Patent Document 1 uses a pointed electrode needle, the amount of ions generated is small, and the electrode needle is frequently cleaned. There was a problem that it was very inconvenient.

The present invention has been made to solve the above-mentioned problems, and at least 100 or more heat-treated carbon fiber yarns obtained by heat-treating carbon fiber yarns having a fine diameter of about 5 to 100 μm at high temperature are densely concentrated in a brush shape. A ground electrode facing the radiation electrode by applying a sinusoidal alternating current high voltage to the radiation electrode formed in a concentrated manner in a brush shape and having a plurality of intervals. The positive and negative charged particles are generated alternately and in equal amounts around the radiating electrode that does not include the positive and negative charged particles. Thus, it is an object of the present invention to provide an AC high voltage radiation type static eliminator that neutralizes the charged object.

The present invention relates to one radiation electrode formed by densely concentrating at least 100 or more heat-treated carbon fiber yarns obtained by heat-treating carbon fiber yarns having a fine diameter of about 5 to 100 μm at a high temperature, or the brush shape A sinusoidal alternating current high voltage is applied to a radiation electrode formed by concentrating and concentrating to a radiation electrode, and around a radiation electrode that does not have a ground electrode facing the radiation electrode, positive and negative, respectively. A method is adopted in which charged charged particles are alternately and equally produced, and the charged particles charged positively and negatively are blown to a charged object using wind power generated by a blower fan as a carrier, and the charged object is discharged. Thus, the above-mentioned problem has been solved.

The present invention is configured as described above and has the effects described below.

In the static eliminator of the present invention, the charged particles having a positive polarity and the charged particles having a negative polarity are equal in the same period as the sine wave, and at 50 Hz or 60 Hz, charged particles having a positive polarity and a negative polarity are present. Since the charge particles are alternately generated, the charged particles are continuously generated during the charge, and the balance is not lost, and the positive and negative charges follow the charge voltage, which increases the supply voltage. Along with this, the number of ions generated increases, and this can improve the static elimination efficiency. In addition, the AC electric field line static eliminator of the present invention performs the static elimination work by the charged particles acting on the charged object if there is a charged object in the moving direction of the charged particles using the wind force from the blower fan as a carrier. Can do. If the charged object is positively charged, the negatively charged charged particles act. If the charged object is negatively charged, the positively charged charged particles act to Neutralizes and eliminates static electricity, and balances positive and negative charged particles in the charged object, eliminating the occurrence of reverse charging, good static elimination effect, and no corona discharge. There is no generation of ozone, and the positive and negative of the AC power supply change automatically depending on the frequency, so there is no special sound or light emission, it is a very stable static eliminator, and no current is generated. The amount of electricity is only the voltage, and there is an excellent effect of only the electrical loss of the core of the transformer and the electricity cost for blowing.

In the static eliminator of the present invention, the AC power source to be used is a power transmission from a commercial power company, the amount of electricity of the positive polarity and the negative polarity is almost equal, is converted alternately with time, and the frequency is also very stable. AC power source or equivalently stable AC power generator is used, and AC high voltage generated via a transformer is radiated from the radiation electrode as AC electric lines of force, generating positive and negative polarity charged particles In addition, since static electricity is discharged by blowing charged particles of positive polarity and negative polarity to a charged object by blowing air from a blower fan, it is possible to easily manufacture a static eliminator capable of eliminating static charges stably for many days without generating reverse charge. it can.

Furthermore, the static eliminator of the present invention is a single radiating electrode formed by concentrating and condensing at least 100 or more heat-treated carbon fiber yarns having a fine diameter of about 5 to 100 μm in a brush shape, or densely focused in the brush shape. Therefore, when a high AC voltage is applied to the radiation electrode, each heat-treated carbon fiber yarn constituting the radiation electrode spreads due to the action of static electricity. Because it is expanded in the shape of a fan, the generation efficiency of charged particles is better than that of a single pointed needle-like electrode used in a conventional corona type static eliminator, and therefore, the charge elimination time can be shortened. Has an effect.

Still further, in the static eliminator of the present invention, by attaching a mesh-like wire net that absorbs electromagnetic waves to the outer wall surface of the charged particle ejection port and grounding it, a malfunction of a semiconductor element or electronic device due to electromagnetic waves, or an internal electric circuit Insulation breakdown is prevented.

It is a schematic longitudinal cross-sectional view which shows the whole this static eliminator which installed the ventilation fan in the upstream of the radiation electrode. It is a front view of the radiation electrode holder which attached the radiation electrode used for this invention static remover. It is the longitudinal cross-sectional view. It is explanatory drawing which shows the production | generation state of the charged particle in this invention static remover. It is an arrangement plan of equipment when the static elimination effect of the static eliminator of the present invention is tested. It is a schematic longitudinal cross-sectional view which shows the whole this invention static remover which installed the ventilation fan in the downstream of the radiation electrode. It is a schematic longitudinal cross-sectional view which shows the whole this invention static eliminator which installed the ventilation fan in the upstream and downstream of a radiation electrode. It is a front view of the radiation electrode holder which attached the radiation electrode by another Example used for this invention static elimination device. It is the longitudinal cross-sectional view.

Whereas the conventional static eliminator is a discharge type static eliminator that uses corona discharge to generate ions to neutralize the charged object placed between the discharge electrode and the ground electrode, the present invention AC The high voltage radiation type static eliminator eliminates the need for a ground electrode facing the radiation electrode, radiates AC electric lines of force from the radiation electrode, and discharges positively and negatively charged charged particles generated around the radiation electrode. It is a radiation type static eliminator that blows air to a charged object and eliminates static electricity. The static eliminator of the present invention will be described in detail below.

Embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a schematic longitudinal sectional view showing the overall static eliminator of the present invention, and it is not necessary to specifically limit the material having high electric resistance, excellent insulating properties, and excellent weight resistance, but is preferably made of polycarbonate. A transformer 4 having a primary coil 2 and a secondary coil 3 is installed in the formed casing 1, and the primary coil 2 on the low voltage side of the transformer 4 is provided outside the casing 1. A commercial frequency sine wave AC voltage, for example, a 100 V sine wave AC voltage of 50 Hz or 60 Hz, is input from the AC power supply input unit 5.

One pole of the secondary coil 3 on the high voltage side of the transformer 4 is connected to the radiation electrode 6, and the other pole of the secondary coil 3 is grounded 7, and the secondary electrode 3 is connected to the radiation electrode 6. By applying a sinusoidal alternating current high voltage via the coil 3, it is possible to generate charged particles 8 by radiating electric lines of force from the radiation electrode 6 without using a ground electrode facing the radiation electrode 6. Form.

Further, on the downstream side wall surface of the casing 1, an ejection port 9 for ejecting positively and negatively charged charged particles 8, which will be described later, as blown carriers, is opened, and the outer side of the casing 1 on the downstream side of the ejection port 9 is opened. A metal mesh 10 is disposed on the wall surface to cover the ejection port 9, and the metal mesh 10 is grounded 7.

As shown in FIG. 1, the radiation electrode 6 is made of a cylindrical insulator, and in an insulating case 12 having a blower opening 11 at the downstream end so as to face the outlet 9 of the casing 1. While being installed, the radiation electrode 6 is connected to one pole of the secondary coil 3 of the transformer 4.

Further, a blower fan 13 is installed on the upstream side of the radiation electrode 6 installed in the insulating case 12, and the blower fan is passed through a vent opening 14 opened on the upstream end of the insulating case 12. 13 sucks the air in the casing 1, and uses the air blown from the blower fan 13 as a carrier, and positively and negatively charged charged particles 8 generated around the radiation electrode 6, which will be described later, are supplied to the air supply opening 11. It is formed so as to be able to blow air toward the charged object 15 on the downstream side through the outlet 9.

Further, as shown in FIGS. 2 and 3, the radiation electrode 6 need not be particularly limited, but has a fine diameter of about 5 to 100 μm, preferably about 5 to 50 μm, and particularly preferably about 5 to 10 μm. At least 100 or more heat-treated carbon fiber yarns 16 having a length of about 20 mm obtained by heat-treating carbon fiber yarns at a high temperature are formed into a single brush shape by closely concentrating. As the fine-diameter heat-treated carbon fiber yarn 16, a fine-diameter heat-treated carbon fiber yarn that has been widely available on the market can be used.

As shown in FIG. 3, the radiating electrode 6 having the above-described configuration is embedded in the central longitudinal direction of the radiating electrode holder 17 made of an insulating material such as plastic having a length substantially equal to the diameter of the insulating case 12. The base end portion is connected and fixed to the copper wire 18, and the secondary coil 3 is connected to the secondary coil 3 via the connection terminal 19 connected to the copper wire 18 at one end portion of the radiation electrode holder 17. Further, each front portion side of each heat treated carbon fiber yarn 16 is formed to extend downstream so as to be freely swingable, while the radiation electrode holder 17 is formed on the inner peripheral wall surface of the insulating case 12. Both ends are fixed closely.

That is, the radiation electrode 6 in the present invention is not formed with a single pointed electrode needle as used in a conventionally used corona discharge type static eliminator, but about 5 to 100 μm. The heat-treated carbon fiber yarns 16 made of fine-diameter carbon fiber yarns are formed by concentrating and concentrating at least 100 or more of the heat-treated carbon fiber yarns in a brush shape, and each heat-treated carbon fiber yarn 16 constituting the radiation electrode 6 individually serves as an electrode. Plays.

In the present invention, the heat-treated carbon fiber yarn 16 made of the fine carbon fiber yarn is used as the radiation electrode 6 for the reason described below. As a result of comparing the conventionally used electrode needle (metal) and the heat-treated carbon fiber yarn used in the present invention, the electrode needle is corroded or dissolved in the tip of the needle due to discharge, and further the needle tip based on the dissolution Deterioration in static elimination performance is observed due to changes in the shape of the gas, generation of toxic gas, dirt due to dust adsorption, and the like. On the other hand, by using a heat-treated carbon fiber yarn for the radiation electrode as in the present invention, it is possible to improve the obstacle in the electrode needle. That is, since the heat-treated carbon fiber yarn used in the present invention is made of carbon, it does not corrode, and even if it is discharged, the thickness of the heat-treated carbon fiber yarn is constant. In addition, because it burns without melting, there is no residue as dust due to gasification (CO ₂ ) by combustion. Furthermore, since the heat-treated carbon fiber yarn vibrates due to the action of static electricity due to an AC applied voltage, there is no adhesion of dust, and therefore, there is no deterioration of the charge removal capability, and a stable charge removal action can be ensured. Further, unlike the electrode needles, maintenance such as cleaning or replacement is unnecessary, and since there is no discharge, no toxic gas such as ozone (O ₃ ) is generated. As described above, the heat-treated carbon fiber yarn is superior as an electrode to the conventionally used electrode needle. Therefore, in the present invention, the heat-treated carbon fiber yarn is employed as the radiation electrode.

The operation of the embodiment of the present invention having the above configuration will be described. By applying a sinusoidal AC high voltage to the radiation electrode 6, electric lines of force are radiated from the radiation electrode 6 and charged particles 8 are generated around the radiation electrode 6. The applied high voltage has a positive pole and a negative pole, and the charged particles 8 also have a positive pole and a negative pole. The generation amount of the charged particles 8 is generated when the voltage reaches a maximum value of the applied voltage from 0 V in the case of a DC voltage. When the voltage reaches a constant value (saturating), the generation of the charged particles 8 stops. When the charged particles 8 are generated to the maximum, energy can be converted from the high voltage to the charged particles 8 by using an alternating high voltage. Therefore, in the static eliminator of the present invention, the sinusoidal alternating high voltage is used. use.

While the generated charged particles 8 are mixed and suspended in the air, the charged particles 8 generate an electric field of charged particles. However, this electric field has no kinetic properties. Electrically, it is converted from an AC voltage to a DC voltage, and there are charged particles 8 that are positively charged and charged particles 8 that are negatively charged. In the present invention, since a sine wave AC high voltage is used as the applied voltage, the generation amount of the positively charged charged particle 8 and the negatively charged charged particle 8 is equal.

The generated charged particles 8 are in a state of floating in the air, and the charged particles 8 are also moved in the moving direction of the air by moving the air by the blowing fan 13. Even if there is a metal such as a wire mesh 10 for cutting electromagnetic waves, which is grounded in the air moving direction, it is not affected as described later. That is, the wind force generated by the blower fan 13 serves as a carrier for the generated charged particles 8.

If there is a charged object 15 in the moving direction of the charged particles 8 by the carrier, the charged particles 8 act on the charged object 15 to perform the charge removal work. If the charged object 15 is positively charged, the negatively charged charged particles 8 act, and if the charged object 15 is negatively charged, the positively charged charged particles 8 act, The object 15 is neutralized and neutralized. The static elimination work is performed until the electrostatic energy of the charged object 15 disappears. The time required for this is the static elimination time.

That is, in the present invention, when a sinusoidal AC high voltage is applied to the radiation electrode 6 having the above-described configuration, each heat-treated carbon fiber yarn 16 constituting the radiation electrode 6 has a tip portion of each heat-treated carbon fiber yarn 16. However, each time it is positively and negatively charged, it is repelled by the action of static electricity and is not attracted to each other, but as shown in FIG. Electric field lines are radiated from the respective leading edges 16 and positively charged particles 8 and minus are formed around the radiation electrode 6 by the radiated lines of electric force as shown in FIG. The charged particles 8 charged in the same manner are generated alternately and in equal amounts. Therefore, since each heat-treated carbon fiber yarn 16 constituting the radiation electrode 6 is expanded and fanned out, the generation efficiency of the charged particles 8 is superior to that of one needle-like electrode. Static elimination time can be shortened.

When a sinusoidal alternating current high voltage is applied to the radiation electrode 6 through the secondary coil 3, electric lines of force are radiated from the front end stump edges of the heat treated carbon fiber yarns 16 constituting the radiation electrode 6. The air in the insulating case 12 is charged to the polarity of the radiated AC electric field lines, and charged negatively to the charged particles 8 that are positively charged in the vicinity of the leading edge of each heat-treated carbon fiber yarn 16. The charged particles 8 are generated alternately and in an equal amount, and an electric field that is electrostatically adsorbed on the entire surface of the air charged with other infinite electric resistance is generated. As a carrier, the charged object 15 is blown to discharge the charged object 15.

Even if a high voltage more than 5 times the high voltage is applied, the distance between the leading edge of each heat-treated carbon fiber yarn 16 constituting the radiation electrode 6 and the grounded component approaching the edge is not limited. By setting a wide interval at which no discharge occurs, no discharge current is generated and no corona discharge is generated. Therefore, there is no generation of toxic ozone due to the discharge current, and it is safe. Further, the static eliminator of the present invention is safe because it emits electric lines of force and has no discharge current, so no Joule heat (W = I ² R = VI) is generated, and no gas is ignited. is there.

The wire mesh 10 is installed for the purpose of preventing electromagnetic failure and ensuring physical safety. The wire mesh 10 is grounded 7, but the wire mesh 10 is a corona discharge type. It is not a ground electrode as in a static eliminator. This was verified by the tests described below.

That is, specifically, the grounded wire mesh 10 absorbs and removes electromagnetic waves generated when the electric force lines are radiated from the radiation electrode 6, thereby preventing malfunction or destruction of the semiconductor element or electronic device due to the electromagnetic waves, Even if a part of the human body mistakenly contacts the wire mesh 10, no electric shock is generated, and no foreign matter enters the insulating case 12, so that an accident can be prevented.

In order to confirm that the wire mesh 10 that is grounded 7 does not act as a ground electrode as in a corona discharge type static eliminator, the present inventor recognizes the effect of static elimination even if the wire mesh 10 is removed from the static eliminator of the present invention. When it was tested whether or not it was possible, a static elimination effect was observed. That is, in the static eliminator of the present invention, it can be confirmed that the presence or absence of the metal mesh 10 has nothing to do with the static elimination effect, and that the metal mesh 10 does not act as a ground electrode as in the corona discharge type static eliminator. It was. In addition, this inventor also implemented the comparative test of the static elimination effect of the static elimination apparatus of this invention provided with the metal-mesh 10 as a contrast with the said test.

As shown in FIG. 5, each test was performed by arranging the devices. [Test 1] is an equipment layout when using the static eliminator of the present invention equipped with a wire mesh, and [Test 2] is an equipment layout when removing the metal mesh from the static eliminator of the present invention. The test conditions are as follows.
Test date September 26, 2009 (Temperature 26 ℃ Humidity 55%)
Electrode 7 μm heat-treated carbon fiber yarns made of 3000 brush-like ones are used Charged object Polyethylene round bar 80φ 300mm
Up to 1.99 million ions / cm ³ can be measured at the air outlet of [Test 1]
The wind speed is 4.9 m / sec. The air volume is 290 m ³ / min.
At the air outlet of [Test 2]
The wind speed is 4.6 m / sec, and the air volume is 285 m ³ / min.
The wind speed and air volume in Table 1 were measured at the position of the charged object.
The measurement of “L 0.5 m” at the bottom of each test result in Table 1 was performed with the blower fan stopped. Furthermore, the indication “scale out” in “number of ions” of each test result in Table 1 means that the number of ions is 199,000 or more and measurement is impossible.

From the measurement results shown in Table 1, the test result obtained by removing the wire mesh of the static eliminator is that the time required for static elimination takes 0.1 seconds only when the distance between the static eliminator and the charged object is 0.5 m. However, when the distance is 0.75 m, 1.0 m, 1.5 m, and 2.0 m, the charge is removed in a shorter time, and from the viewpoint of the function of charge removal only, it is more efficient that there is no wire mesh. It was proved that.

From the comparison of the measurement results of Test 1 and Test 2, it was found that the wire mesh does not function as a ground electrode that is a counter electrode of the radiation electrode.

In addition, from the measurement result of “L0.5m” at the bottom of the results of each test in Table 1, in both Test 1 and Test 2, when the blower fan is stopped and the wind speed / air volume is zero, positive ions are It was confirmed that there was no static elimination effect at all by a slight movement. In addition, when an equal amount of wind force was applied, it was confirmed that as the distance L was increased, the number of ions reaching the charged object was decreased and the charge removal time was increased. From the above, it was demonstrated that the ions generated around the radiation electrode do not move by themselves but are neutralized only by other movement by wind power.

In other words, a corona discharge type static eliminator can remove static electricity without a blower fan as in the static eliminator of the present invention. The fact that neutralization is not possible means that the static eliminator of the present invention is not a static eliminator that uses discharge like a corona discharge type static eliminator, but a static eliminator that uses charged particles generated by radiation of electric lines of force. I was able to confirm that.

Originally, an object has an equal amount of positive charge and negative charge, and is uniformly distributed because it is uniformly distributed. However, when the balance is lost and the plus or minus charge becomes excessive, the object is charged with static electricity and becomes a charged object. In other words, the charged object is a non-uniform state due to excessive plus or minus charges. Static elimination is to neutralize this excess charge with a charge of opposite polarity and return it to electrical neutrality close to the original state. In other words, the charge of the charged object is neutralized by supplying a negative charge to an object having an excessive positive charge or vice versa.

In the static eliminator of the present invention, the charged particles having a positive polarity and the charged particles having a negative polarity are the same type of sine wave (sine web) and are equivalent, and at 50 Hz or 60 Hz, Since negatively charged particles are alternately generated, the charged particles are continuously generated during charging, and the balance is not lost, and the positive and negative charges follow the charging voltage. As the voltage rises, the number of ions generated increases, thereby increasing the static elimination efficiency. In addition, the AC electric field line static eliminator of the present invention does not generate corona discharge, so there is no generation of electromagnetic waves or toxic ozone, and the positive and negative of the AC power supply change automatically depending on the frequency, so that a special sound is also emitted. It is a very stable static eliminator. Furthermore, since the AC electric field line static eliminator of the present invention does not generate current, the amount of electricity of the power source is only the voltage, and only the electrical loss of the transformer core and the electricity cost for blowing air.

The static eliminator of the present invention applies a sinusoidal alternating current high voltage to the radiation electrode 6 to radiate electric lines of force into the space to generate positive and negative polarity charged particles 8 having another infinite electric resistance. An electric field in which air is electrostatically surrounded is created, and this is blown to the target charged object 15 by the wind force of the blower fan 13, so that no discharge current is required and Joule heat (W = I ² R = VI) This is safe because there is no current I, no Joule heat is generated, no gas is ignited, and there is no neutralization due to corona discharge. There is no sanitary safety.

In the static elimination in the air, the blower 13 has the same mass of positive and negative polarities of AC electric lines of force, and the same action as alternately converting the charged particles 8 with the positive and negative polarities balanced. Since the charged object 15 is blown into the charged object 15 to eliminate the charge, the charged particle 8 is attracted or repelled depending on the polarity of the charged object 15 so that the charge removal operation is performed repeatedly. Unlike the corona discharge type static eliminator, reverse charging does not occur, and the charged object 15 can be neutralized. If the number of charged particles 8 blown by the blower fan 13 is large, the charge removal processing time is fast.

When the distance from the ejection port 9 of the charged particles 8 to the charged object 15 is about 60 cm during the charge removal, it is recommended to install the blower fan 13 upstream of the radiation electrode 6 as shown in FIG. Is done. Further, when the distance from the ejection port 9 of the charged particles 8 to the charged object 15 is about 1 m, it is recommended to install the blower fan 13 on the downstream side of the radiation electrode 6 as shown in FIG. Further, when maximizing the distance from the ejection port 9 of the charged particles 8 to the charged object 15, as shown in FIG. 7, the blower fans 13 are installed on both the upstream and downstream sides of the radiation electrode 6. Is recommended.

When the mass of the positive polarity and negative polarity of the AC power supply 5 is approximately equal and is alternately converted 50 times or 60 times per second from an AC100V commercial power company, or when the frequency is other than the above The AC electric field lines radiated from the radiating electrode 6 are very stable by using an equivalently stable AC power generator and increasing the voltage through the transformer 4.

When used in a field where there is no risk of malfunction of semiconductors and electronic devices due to electromagnetic waves, although not shown, a net-like member made of synthetic resin formed in a net shape may be used instead of the wire net 10. . Of course, grounding is not necessary in this case.

FIG. 8 is a front view showing another embodiment of the radiation electrode 6, and FIG. 9 is a longitudinal sectional view thereof. The radiating electrode shown in FIGS. 1 to 3 is formed by densely concentrating at least 100 heat-treated carbon fiber yarns 16 in a brush shape, whereas the radiating electrode 6 shown in FIGS. Is formed with a plurality of intervals by densely concentrating at least 100 heat-treated carbon fiber yarns 16 in a brush shape. The charged particle generation and charge removal mechanism in the radiation electrode 6 in the other embodiment is the same as that in the radiation electrode 6 shown in FIGS.

Further, unlike the single discharge electrode, the plurality of radiation electrodes formed has a large radiation area of electric lines of force, so that more charged particles are generated, and the static elimination efficiency is high.

DESCRIPTION OF SYMBOLS 1 Casing 2 Primary coil 3 Secondary coil 4 Transformer 5 AC power supply input part 6 Radiation electrode 7 Grounding 8 Charged particle 9 Outlet 10 Wire net 11 Blowing opening 12 Insulating case 13 Blower fan 14 Ventilation opening 15 Charged object 16 Heat treatment carbon fiber Thread 17 Radiation electrode holder 18 Copper wire 19 Connection terminal

Claims (7)

One radiation electrode formed by densely concentrating at least 100 or more heat-treated carbon fiber yarns obtained by heat-treating carbon fiber yarns having a fine diameter of about 5 to 100 μm at a high temperature, Charged particles that are charged positively and negatively around a radiating electrode that does not have a ground electrode facing the radiating electrode by applying a sinusoidal alternating current high voltage to the radiating electrode formed with a plurality of intervals. Alternating high voltage radiation, wherein the charged particles are positively and negatively charged, and the charged particles charged positively and negatively are blown to the charged object using the wind power generated by the blower fan as a carrier. Type static eliminator. A transformer having a primary coil and a secondary coil is installed in the casing, and the primary coil on the low voltage side of the transformer has a commercial frequency from an AC power input unit provided outside the casing. A sinusoidal AC voltage is input, and one pole of the secondary coil on the high voltage side of the transformer is connected to the radiation electrode, the other pole of the secondary coil is grounded, and the radiation electrode Applying a sinusoidal AC high voltage through the secondary coil, and without radiating an AC electric field line from the radiation electrode without providing a ground electrode facing the radiation electrode, positively around the radiation electrode Charged charged particles and negatively charged charged particles are generated alternately and in equal amounts, and on the downstream side wall surface of the casing, there is opened a discharge port for discharging the charged particles from the wind power from the blower fan as a carrier. And a metal mesh covering the outlet is grounded on the outer wall surface of the casing downstream of the outlet, and the radiation electrode faces the outlet of the casing at the downstream end. As described above, the radiating electrode is installed in an insulating case having an air blowing opening, and at least 100 heat-treated carbon fiber yarns obtained by heat-treating fine carbon fiber yarns at a high temperature are concentrated and concentrated in a single brush shape. And the base end of the heat-treated carbon fiber yarn extends to the downstream side while being connected to a copper wire embedded in a radiation electrode holder made of an insulator. An AC high-voltage radiation type static eliminator characterized by being made to be freely movable. A transformer having a primary coil and a secondary coil is installed in the casing, and the primary coil on the low voltage side of the transformer has a commercial frequency from an AC power input unit provided outside the casing. A sinusoidal AC voltage is input, and one pole of the secondary coil on the high voltage side of the transformer is connected to the radiation electrode, the other pole of the secondary coil is grounded, and the radiation electrode Applying a sinusoidal AC high voltage through the secondary coil, and without radiating an AC electric field line from the radiation electrode without providing a ground electrode facing the radiation electrode, positively around the radiation electrode The charged charged particles and negatively charged charged particles are generated alternately and in equal amounts, and on the downstream side wall surface of the casing, there is opened a discharge port for discharging the charged particles from the blower fan as a carrier. And a metal mesh covering the outlet is grounded on the outer wall surface of the casing downstream of the outlet, and the radiation electrode faces the outlet of the casing at the downstream end. As described above, the radiation electrode is installed in an insulating case, and the radiating electrode is formed into a plurality of brush shapes by densely concentrating at least 100 heat-treated carbon fiber yarns obtained by heat-treating fine carbon fiber yarns at a high temperature. Formed and connected to a copper wire embedded in a radiation electrode holder made of an insulator with an interval between the base ends thereof, and the front side of the heat treated carbon fiber yarn is downstream An AC high voltage radiation type static eliminator characterized in that it is formed so as to be freely swingable. An alternating current high voltage radiation type static eliminator using a mesh material made of insulating synthetic resin instead of the wire mesh according to claim 2 or claim 3. An alternating current high voltage radiation type static eliminator characterized in that the blower fan according to any one of claims 1 to 3 is installed upstream of the radiation electrode. The alternating current high voltage radiation type static elimination apparatus characterized by the above-mentioned. The ventilation fan in any one of Claims 1-3 was installed in the downstream of the radiation electrode. An alternating current high voltage radiation type static eliminator characterized in that the blower fan according to any one of claims 1 to 3 is installed on an upstream side and a downstream side of a radiation electrode.

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