JP7011817B2 - Static elimination device and static elimination method - Google Patents

Description

The present invention relates to a static elimination device and a static elimination method.

Most suspended particles such as dust and dirt in the air carry either positive or negative static electricity. Therefore, if a molded product made of synthetic resin such as plastic is charged, dust or dust is attracted to and adheres to the molded product. When post-treatment such as painting or vapor deposition is performed on a molded product, if dust or the like adheres to the molded product, the appearance will be poor.

Patent Document 1 discloses a corona discharge type ionizer (ionizer) for controlling static electricity in air and eliminating static electricity of a charged body. The ionizer applies a high voltage to the discharge electrode to generate a corona discharge and generate air ions. Then, the generated ions are sent to the charged body by wind to eliminate static electricity.

Japanese Unexamined Patent Publication No. 2002-216996

Since the ionizer pays attention to how many ions are generated, the electric field strength is increased by providing a ground electrode in the vicinity of the discharge electrode. Therefore, when a large amount of ions are generated, the corona discharge shifts to spark discharge and not only a large amount of ozone is generated, but also the oxide film of the discharge electrode is peeled off, which causes dust generation. In addition, since the ions are sent by the wind, the ions are diffused, neutralized and extinguished before reaching the charged body, and the static elimination effect is reduced.

The present invention has been made in view of such circumstances, and an object of the present invention is to provide a static elimination device and a static elimination method capable of improving static elimination efficiency.

The static eliminator according to the present invention is a static eliminator that removes static electricity from an object by using an electric force acting on an electric charge in an electric field, and a positive electrode to which a positive electrode is applied and a negative electrode to which a negative voltage is applied are applied. It is provided with a negative electrode and an outlet for blowing air toward the object.

The static elimination method according to the present invention is a static elimination method for statically eliminating an object by utilizing an electric force acting on electric charges in an electric field, in which a positive voltage is applied to a positive electrode and a negative voltage is applied to a negative electrode. Apply and blow air from the outlet toward the object.

According to the present invention, the static elimination efficiency can be improved.

It is explanatory drawing which shows the 1st Embodiment of the structure of the static elimination device of this embodiment. It is explanatory drawing which shows an example of the main part structure of the positive electrode part of this embodiment. It is a schematic diagram which shows an example of the static elimination method by the static elimination apparatus of this embodiment. It is explanatory drawing which shows the result of the static elimination performance by the static elimination apparatus of this embodiment. It is explanatory drawing which shows the 2nd Embodiment of the main part structure of the static elimination device of this embodiment. It is explanatory drawing which shows the 3rd Embodiment of the main part structure of the static elimination device of this embodiment. It is a schematic diagram which shows the installation example of the 3rd Example of the static elimination apparatus of this embodiment.

Hereinafter, the present invention will be described with reference to the drawings showing the embodiments thereof. FIG. 1 is an explanatory diagram showing a first embodiment of the configuration of the static elimination device of the present embodiment. The static eliminator of the present embodiment includes a static eliminator 33, a main body 50, end caps 51 and 52 fixed on both sides of the main body 50, a positive electrode portion 10 and a negative electrode portion 20 provided on the main body 50 at appropriate lengths and distances. , And a positive side electric wire 34, a negative side electric wire 35, and the like. The main body 50 and the end caps 51 and 52 have insulating properties and are made of a synthetic resin (for example, polyvinyl chloride: PVC or the like). The main body 50 and the end caps 51 and 52 form a main body portion. The main body 50 and the end cap 52 have an air flow path formed inside, and have a cylindrical shape with both ends open. The end cap 51 has a cylindrical shape with one end open and the other end closed.

The separation distance between the positive electrode unit 10 and the negative electrode unit 20 (reference numeral L in FIG. 1) can be appropriately set according to the voltage generated in the positive electrode unit 10 and the negative electrode unit 20. The separation distance L can be, for example, 300 mm to 500 mm, but is not limited to these values.

A plurality of outlets 53 are provided between the positive electrode portion 10 and the negative electrode portion 20 of the main body 50. The outlet 53 blows air toward the object. In the example of FIG. 1, six outlets 53 are shown for convenience, but the number of outlets 53 is not limited to the example of FIG. Further, for convenience, the outlet 53 is enlarged and shown, but the size of the outlet 53 is actually smaller than that shown in the figure. The plurality of outlets 53 may be arranged side by side in a straight line parallel to the length direction of the main body 50, or may be alternately arranged on two straight lines parallel to the length direction of the main body 50 and separated from each other. It may be arranged side by side in.

One end of the main body 50 is inserted into one opening of the end cap 52. The other end of the main body 50 is inserted into the opening at one end of the end cap 51. A regulator 41 for adjusting the flow rate of air is fixed to the other opening of the end cap 52. A joint 42 to which the tube 43 is attached is detachably attached to the regulator 41. Compressed air from a compressed air source (not shown) is blown out from a plurality of outlets through one opening of the end cap 52 and a flow path of the main body 50.

The AC100V of the AC power supply 30 is converted into, for example, DC12V by the power adapter 31, and the converted DC12V is output to the static eliminator 33 via the switch box 32. The static eliminator 33 is provided with a boost converter or the like, and outputs a DC voltage of +8 kV to + 9 kV to the positive output end and outputs a DC voltage of −8 kV to -9 kV to the negative output end. The positive side electric wire 34 is connected to the positive output end, and the negative side electric wire 35 is connected to the negative output end. Further, the static eliminator 33 is grounded by the ground wire 36.

FIG. 2 is an explanatory diagram showing an example of the configuration of a main part of the positive electrode portion 10 of the present embodiment. As shown in FIG. 2, the positive electrode portion 10 accommodates the needle-shaped positive electrode 11, the fixing portion 14 for fixing the positive electrode 11, and the positive electrode 11 so as to surround the positive electrode 11 from the peripheral edge of the fixing portion 14. A peripheral wall portion 12 or the like forming the space 13 is provided. A positive electric wire 34 is electrically connected to the positive electrode 11. Although not shown, the configuration of the negative electrode portion 20 is the same as the configuration of the positive electrode portion 10. That is, the negative electrode portion 20 includes a needle-shaped negative electrode, a fixing portion for fixing the negative electrode, a peripheral wall portion for forming an accommodation space for accommodating the negative electrode so as to surround the negative electrode from the peripheral edge of the fixing portion, and the like. The negative side electric wire 35 is electrically connected to the negative electrode.

Next, the operation of the static eliminator according to the present embodiment will be described.

FIG. 3 is a schematic diagram showing an example of a static elimination method using the static elimination device of the present embodiment. For convenience, FIG. 3 shows only the electric lines of force around the negatively charged body. For example, a positive voltage of +8 kV to +9 kV is applied to the positive electrode of the positive electrode unit 10. Further, for example, a negative voltage of −8 kV to −9 kV is applied to the negative electrode of the negative electrode unit 20. As a result, electric lines of force (shown by solid lines in FIG. 3) from the positive electrode to the negative electrode are formed in the space around the positive electrode and the negative electrode. For example, the static eliminator of the present embodiment can be arranged so that the object charged with negative static electricity is located at an appropriate position in the space where the electric lines of force are formed.

Since the main body portion (main body 50, end caps 51, 52), the positive electrode portion 10 and the negative electrode portion 20 have insulating properties, a part or all of the electric power lines from the positive electrode to the negative electrode are the main body portion and the positive electrode portion. It is possible to suppress the disappearance at the electrode portion 10 or the negative electrode portion 20, and the electric power lines can be efficiently distributed in the space between the positive electrode and the negative electrode, and the electric power lines reach the object. It becomes easy to make it.

When the lines of electric force reach the object, positive and negative ions move depending on the lines of electric force and reach the object, and the imbalance between the positive and negative ions of the object is harmonized. The static electricity is removed. The same applies when the object is a positively charged body. The mechanism by which static electricity is removed and eliminated by the lines of electric force has not been elucidated in detail, but for example, the lines of electric force reach the charged body in the same way that static electricity is removed when the charged body is brought into contact with the ground level. Therefore, it can be considered that the same action as bringing the charged body into contact with the ground level is occurring. Another hypothesis is that when an electric line of force hits an object, it is ionized there.

In the vicinity of the positive electrode of the positive electrode unit 10, positive ions of air (nitrogen ion, oxygen ion, carbon dioxide gas ion, etc.) are generated by the corona discharge. However, unlike the conventional ionizer, in the present embodiment, since there is no ground electrode or a metal plate connected to the ground level in the vicinity of the positive electrode, a high electric field unlike the ionizer is not generated and a large amount of ions are generated. Does not occur. In the present embodiment, the positive ions generated near the positive electrode move toward the object depending on the electric lines of force.

In the vicinity of the negative electrode of the negative electrode portion 20, negative ions of air (nitrogen ion, oxygen ion, carbon dioxide gas ion, etc.) are generated by the corona discharge. However, unlike the conventional ionizer, in the present embodiment, since there is no ground electrode or a metal plate connected to the ground level in the vicinity of the negative electrode, a high electric field unlike the ionizer is not generated and a large amount of ions are generated. Does not occur. In the present embodiment, the negative ions generated near the negative electrode move toward the object depending on the electric lines of force.

In the present embodiment, since a plurality of outlets 53 for blowing air toward an object placed at a position intersecting the electric lines of force from the positive electrode to the negative electrode are provided, ions generated in the positive electrode and the negative electrode are provided. Moves by the flow of air blown out from the outlet 53 (indicated by the broken line in FIG. 3) as it moves by relying on the lines of electric force, and neutralizes the electric charge on the surface of the object. Is statically eliminated. In the example of FIG. 3, since the object is a negatively charged body, it is neutralized with positive ions to eliminate static electricity. When the object is a positively charged body, it is neutralized with negative ions to eliminate static electricity.

Further, in the present embodiment, the electric lines of force are formed while moving the ions of the conventional air so as to depend on the lines of electric force formed so as to intersect with the object, instead of diffusing only by the wind. Since the ions are moved toward the space by the flow of air blown out from the outlet 53, the air ions are suppressed from being neutralized on the way, and the air ions are more reliably carried to the object. be able to.

As described above, in the present embodiment, the static elimination efficiency can be improved by the synergistic action of the static elimination by the electric lines of force and the static elimination by the air ions.

FIG. 4 is an explanatory diagram showing the result of static elimination performance by the static elimination device of this embodiment. In FIG. 4, the horizontal axis represents time (s) and the vertical axis represents voltage (V). In FIG. 4, the curve shown by the solid line shows the static elimination performance by the static elimination device of the present embodiment, and the curve shown by the broken line shows the static elimination performance when the air blowout from the outlet is stopped in the static elimination device of the present embodiment. The curve shown by the two-dot chain line shows the static elimination performance by the corona discharge type ionizer. Each curve shows a transition of how an object such as an insulator is charged with an initial voltage (positive and negative voltage at time 0 in FIG. 4) and the voltage decreases with the passage of time. The distance between the static eliminator and the charged object is about 60 cm. Although it depends on the object, it may be evaluated that the static elimination is performed when the voltage becomes 10 V or less, or it may be evaluated that the static elimination is performed when the voltage becomes 1 kV or less.

As shown by the solid line in FIG. 4, in the present embodiment, it can be seen that the object is statically eliminated in about 2.5 seconds. Further, as shown by the broken line, it can be seen that the object is statically eliminated in about 7.5 to 8 seconds when the air is not blown out. Moreover, in the case of a conventional ionizer, static electricity cannot be completely eliminated.

The static elimination performance changes depending on the distance between the static elimination device and the object, but even if the distance is different, the same tendency as in the case of FIG. 4 is shown.

FIG. 5 is an explanatory diagram showing a second embodiment of the main part configuration of the static eliminator according to the present embodiment. The main difference between the second embodiment shown in FIG. 5 and the first embodiment shown in FIG. 1 is that in the second embodiment, the main body 60 and the reducers 61 and 62 are provided instead of the main body 50. The main body 60 and the reducers 61 and 62 have an insulating property and are made of a synthetic resin (for example, polyvinyl chloride: PVC or the like). The main body 60 has a larger inner diameter of the flow path than the main body 50. The reducers 61 and 62 connect the main body 60 having a different inner diameter and the end caps 51 and 52. Further, the main body 60 is provided with a plurality of outlets 63, similarly to the main body 50.

The flow path diameter of the main body 60 at the location where the air outlet 63 is provided is larger than the flow path diameter at the location where the positive electrode portion 10 and the negative electrode portion 20 are provided. As a result, the flow of air in the flow path can be stabilized and the air blown out from each outlet 63 can be made uniform.

FIG. 6 is an explanatory diagram showing a third embodiment of the main part configuration of the static eliminator according to the present embodiment. The main difference between the third embodiment shown in FIG. 6 and the first embodiment shown in FIG. 1 is that in the third embodiment, the facing main body 70 is provided facing the main body 50, and the main body 50 has two. One positive electrode portion 10 is provided, and two negative electrode portions 20 are provided on the facing main body 70. The description of the same parts as in the first embodiment will be omitted.

As shown in FIG. 6, the main body 50 is provided with two positive electrode portions 10 separated by an appropriate length. The facing main body 70 is, for example, cylindrical, has an insulating property, and is made of a synthetic resin (for example, polyvinyl chloride: PVC or the like). The facing main body 70 is provided with two negative electrode portions 20 separated by an appropriate length. The distance between the two positive electrode portions 10 is about the same as the distance between the two negative electrode portions 20, but the shape of the object (charged body) located between the main body 50 and the opposite main body 70 The distance between the two positive electrode portions 10 and the distance between the two negative electrode portions 20 may be different depending on the size, orientation, and the like.

For example, a positive voltage of +8 kV to +9 kV is applied to the positive electrode of the positive electrode unit 10. Further, for example, a negative voltage of −8 kV to −9 kV is applied to the negative electrode of the negative electrode unit 20. As a result, electric lines of force (shown by solid lines in FIG. 6) from the positive electrode to the negative electrode are formed in the space around the positive electrode and the negative electrode. The static eliminator of the present embodiment can be arranged so that the object charged with static electricity is located at an appropriate position in the space where the electric lines of force are formed.

Further, since it is provided with a plurality of outlets 53 that blow air toward an object placed at a position intersecting the electric lines of force from the positive electrode to the negative electrode (from the main body 50 toward the opposite main body 70), the positive electrode is provided. , The ions generated at the negative electrode move depending on the electric lines of force, and at the same time, they move toward the object due to the flow of air blown out from the outlet 53 (indicated by the broken line in FIG. 6), and the surface of the object. It is statically eliminated by neutralizing it with the electric charge of.

Since the main body (main body 50, end caps 51, 52), the opposed main body 70, the positive electrode portion 10 and the negative electrode portion 20 have insulating properties, a part or all of the electric power lines from the positive electrode to the negative electrode can be used. It is possible to suppress the disappearance of the main body portion, the facing main body 70, the positive electrode portion 10 or the negative electrode portion 20, and the electric power lines can be efficiently distributed in the space between the positive electrode and the negative electrode. It becomes easy to make the electric power wire reach the object located between the main body portion and the facing main body 70.

Further, since a plurality of outlets 53 are arranged side by side between the plurality of positive electrode portions 10 separated by an appropriate length, they are separated from the main body portion while being substantially parallel to or intersecting the electric lines of force from the positive electrode to the negative electrode. Air ions can be moved to the position, and as a result, the range in which static electricity can be eliminated can be widened.

In the example of FIG. 6, the positive electrode portion 10 is provided in the main body 50 and the negative electrode portion 20 is provided in the facing main body, but the present invention is not limited to this, and the negative electrode portion 20 is provided in the main body 50 and opposed to each other. The positive electrode portion 10 may be provided on the main body.

FIG. 7 is a schematic diagram showing an installation example of the third embodiment of the static elimination device of the present embodiment. FIG. 7 shows a plan view of a mold portion of an injection molding machine, for example, a state when the mold portion is viewed from the ceiling toward the floor. In injection molding, the material is charged into a hopper (not shown) and melted in a cylinder (not shown). Then, by advancing the screw (not shown), the molten material is injected into the mold and press-fitted. After that, the mold is cooled, the mold is opened, and the molded product is taken out. In the process of injection molding, one of the molds moves in the opening direction and the closing direction of the mold, as indicated by reference numeral A in FIG. When the mold is opened and the molded product is taken out, the molded product can be statically eliminated by the static elimination device of the present embodiment.

As shown in FIGS. 6 and 7, air is blown from the outlet of the main body 50 toward the facing main body 70. As a result, air ions can be moved to the space between the main body 50 and the opposite main body 70, and as a result, the range in which static electricity can be eliminated can be widened.

In each embodiment of the present embodiment, by injecting compressed air, air can be vigorously blown out from the air outlet, and air ions can be moved over a wide range.

In each embodiment of the present embodiment, the hole diameter of the air outlet is made smaller on the air inlet side and larger as it is farther from the air inlet side. For example, in the example of FIG. 1, six outlets 53 are shown for convenience, but the holes of the first and second outlets 53 (two on the right side in the figure) from the input side of the compressed air are shown. The diameter is, for example, 1.5 mm, and the hole diameters of the third and fourth outlets 53 from the insertion side are, for example, 2.0 mm, and the fifth and sixth holes from the insertion side (left side in the figure). The hole diameter of the outlet 53 of (2) can be set to, for example, 2.5 mm.

Thereby, for example, even if the pressure of the compressed air decreases as the pressure increases from the input side, the amount of air (air volume) blown out from the outlet can be made uniform.

In the present embodiment, when the AC power is turned on to the static eliminator, the static eliminator 33 outputs a predetermined voltage to the positive electrode and the negative electrode, and an electric line of force is immediately formed from the positive electrode to the negative electrode. , The static elimination effect is exhibited immediately after the power is turned on.

In the present embodiment, the static elimination efficiency can be improved by the synergistic action of static elimination by electric lines of force and static elimination by air ions. The static elimination efficiency includes a short time until the static elimination is performed below the allowable voltage, a wide space area where static elimination is possible, and the ability to reliably eliminate static electricity.

In the present embodiment, the positional relationship between the positive electrode portion and the negative electrode portion can be appropriately set according to the environment of the static elimination place such as the shape, size, and type of the object. Static elimination can be performed efficiently. In the present embodiment, the needle-shaped electrode has been described as the electrode, but the shapes of the positive electrode and the negative electrode are not limited to the needle shape. For example, instead of the needle-shaped electrode, carbon fiber, special wire, or the like can be used as the electrode, and the carbon fiber, special wire, or the like can be stretched around at a desired position in the space. As described above, the static elimination device of the present embodiment is suitable for a combination of local static elimination and wide area static elimination.

In the present embodiment, unlike the conventional ionizer, it is not necessary to shorten the distance between the discharge electrode and the ground electrode or the metal plate to generate a high electric field, and to generate a large amount of ions by the corona discharge. Therefore, it is possible to prevent the generation of ozone and the oxidative peeling of the electrodes.

The static elimination device of the present embodiment can combine local static elimination and wide area static elimination. As a result, the static eliminator of the present embodiment can be used in various industries and industries. For example, plastic molding field, semiconductor, printed circuit board manufacturing field, plastic molded product painting field, film manufacturing field, automatic assembly field such as robots, precision equipment manufacturing field, printing field, pharmaceutical manufacturing field, medical equipment manufacturing field, etc. Is included.

The static elimination device of the present embodiment is a static elimination device that eliminates static electricity of an object by using an electric force acting on electric charges in an electric field, and a positive electrode to which a positive electrode is applied and a negative electrode to which a negative voltage is applied. It is provided with a negative electrode to be formed and an outlet for blowing air toward the object.

The static elimination method of the present embodiment is a static elimination method for statically eliminating an object by using an electric force acting on electric charges in an electric field, in which a positive voltage is applied to a positive electrode and a negative voltage is applied to a negative electrode. Is applied, and air is blown out from the outlet toward the object.

A positive voltage is applied to the positive electrode to generate positive ions. A negative voltage is applied to the negative electrode, and negative ions are generated. The positive voltage can be, for example, + 8 kV to + 9 kV, and the negative voltage can be -8 kV to -9 kV, but the voltage value is not limited thereto. As a result, electric lines of force from the positive electrode to the negative electrode are formed in the space around the positive electrode and the negative electrode. The object charged with static electricity can be placed at an appropriate position in the space where the electric lines of force are formed. Positive ions and negative ions move depending on the electric lines of force to reach the object, and the imbalance between the positive ions and the negative ions of the object is harmonized and statically eliminated.

In the vicinity of the positive electrode, air ions are generated by the corona discharge. However, unlike the conventional ionizer, since the ground electrode does not exist in the vicinity of the positive electrode, a large amount of ions are not generated unlike the ionizer. Ions generated near the positive electrode move depending on the lines of electric force. Further, the negative electrode also generates air ions in the same manner as the positive electrode.

The air outlet blows air toward the object. More specifically, since it is provided with an outlet that blows air toward an object placed at a position intersecting the electric line of force from the positive electrode to the negative electrode, the ions generated in the positive electrode and the negative electrode generate electric force. It moves by relying on the lines of force and moves toward the object by the flow of air blown out from the outlet, and is statically eliminated by neutralizing the charge on the surface of the object.

With the above configuration, the static elimination efficiency can be improved by the synergistic action of static elimination by electric lines of force and static elimination by air ions.

The static eliminator of the present embodiment is provided in an insulating main body portion in which one end is closed, the other end is open, and an air flow path is provided inside, and the main body portion is provided. A positive electrode portion having an insulating property and having the positive electrode fixed therein, and a negative electrode provided in the main body portion at an appropriate length from the positive electrode portion and having an insulating property and having the negative electrode fixed thereto. A plurality of outlets are provided side by side between the positive electrode portion and the negative electrode portion of the main body portion.

The main body has an insulating property in which one end is closed, the other end is open, and an air flow path is provided inside. The positive electrode portion is provided in the main body portion, has an insulating property, and the positive electrode portion is fixed. The negative electrode portion is provided in the main body portion at an appropriate length apart from the positive electrode portion, has insulating properties, and the negative electrode portion is fixed. A plurality of outlets are provided side by side between the positive electrode portion and the negative electrode portion of the main body.

Air is blown out from a plurality of outlets via the opening of the main body and the flow path. Since the main body, positive electrode, and negative electrode have insulating properties, part or all of the electric power lines from the positive electrode to the negative electrode disappear at the main body, positive electrode, or negative electrode. It can be suppressed, the electric power lines can be efficiently distributed in the space between the positive electrode and the negative electrode, and it becomes easy for the electric power lines to reach the object. In addition, since a plurality of outlets are provided side by side between the positive electrode portion and the negative electrode portion separated by an appropriate length, they are located away from the main body while intersecting the electric lines of force from the positive electrode to the negative electrode. It is possible to move the ions of the air up to, and as a result, the range in which static electricity can be eliminated can be widened.

The static eliminator of the present embodiment has an insulating main body having one end closed, the other end open, and an air flow path provided inside, and the main body separated from the main body by an appropriate length. A plurality of first electrode portions provided in the portions and having insulating properties, to which the first electrodes having one polarity of the positive electrode or the negative electrode are fixed, and a plurality of first electrode portions facing the main body portion and having insulating properties. A plurality of second electrode portions provided on the facing main body portion at an appropriate length and separated from each other and having insulating properties, to which a second electrode having the other polarity of the positive electrode or the negative electrode is fixed. A plurality of the outlets are provided side by side between the plurality of first electrode portions of the main body portion.

The main body has an insulating property in which one end is closed, the other end is open, and an air flow path is provided inside. The plurality of first electrode portions are provided on the main body portion at appropriate lengths and distances, and have insulating properties, and the first electrode having one polarity of the positive electrode or the negative electrode is fixed. A plurality of outlets are provided side by side between the plurality of first electrode portions of the main body portion.

The facing main body portion is arranged to face the main body portion and has an insulating property. The plurality of second electrode portions are provided on the opposing main body portions at appropriate lengths and distances, and have insulating properties, and the second electrode having the other polarity of the positive electrode or the negative electrode is fixed.

Air is blown out from a plurality of outlets via the opening of the main body and the flow path. Since the main body, the facing main body, the first electrode, and the second electrode have insulating properties, part or all of the electric power lines from the positive electrode to the negative electrode are the main body, the facing main body, and the first. It is possible to suppress the disappearance at the electrode portion or the second electrode portion, and it is possible to efficiently distribute the electric power lines in the space between the first electrode of the main body portion and the second electrode of the corresponding main body portion. It becomes easy to make the electric power wire reach the object located between the main body portion and the facing main body portion. Further, since a plurality of outlets are arranged side by side between the plurality of first electrode portions separated by an appropriate length, they are separated from the main body portion while being substantially parallel to or intersecting with the electric lines of force from the first electrode to the second electrode. Air ions can be moved to a certain position, and as a result, the range in which static electricity can be eliminated can be widened.

In the static eliminator of the present embodiment, the air outlet blows air toward the facing main body portion.

Air is blown from the air outlet toward the opposite main body. As a result, air ions can be moved to the space between the main body and the opposite main body, and as a result, the static elimination range can be widened.

The static eliminator of the present embodiment is designed to allow compressed air to flow from the opening toward the flow path.

Compressed air flows in from the opening toward the flow path. As a result, air can be blown out vigorously from the air outlet, and air ions can be moved over a wide range.

In the static eliminator of the present embodiment, the flow path diameter of the main body portion where the outlet is provided is the flow path diameter of the positive electrode portion, the negative electrode portion, or the portion where the first electrode portion is provided. Greater than.

The flow path diameter at the location where the air outlet of the main body is provided is larger than the flow path diameter at the location where the positive electrode portion, the negative electrode portion, or the first electrode portion is provided. This makes it possible to stabilize the flow of air in the flow path and equalize the air blown out from each outlet.

In the static eliminator of the present embodiment, the hole diameter of the outlet increases from the other end toward the one end.

The hole diameter of the air outlet increases from the other end toward one end. That is, the hole diameter of the air outlet is made smaller on the air inlet side and larger as it is farther from the air inlet side. Thereby, for example, even if the pressure of the compressed air decreases as the pressure increases from the input side, the amount of air (air volume) blown out from the outlet can be made uniform.

It should be noted that at least a part of the above-described embodiments can be arbitrarily combined.

10 Positive electrode part 11 Positive electrode 12 Peripheral wall part 13 Containment space 14 Fixed part 20 Negative electrode part 31 Power adapter 32 Switch box 33 Static eliminator 34 Positive side wire 35 Negative side wire 36 Ground wire 41 Regulator 42 Joint 43 Tube 50 Main body 51, 52 End cap 53 Outlet 60 Main body 61, 62 Reducer 63 Outlet 70 Opposite main body

Claims (7)

It is a static elimination device that removes static electricity from an object by using the electric force acting on the electric charge in the electric field.
A positive electrode to which a positive voltage is applied, and
Negative electrodes to which a negative voltage is applied, and
It is equipped with an outlet that blows air toward the object.
By applying a voltage to the positive electrode and the negative electrode, ions are generated and an electric line of force is formed from the positive electrode toward the negative electrode so as to intersect the object.
A static eliminator that moves the ions to the object by relying on the electric lines of force and moves the ions to the object by the flow of air blown from the outlet . An insulating main body with one end closed, the other end open, and an air flow path inside.
A positive electrode portion provided on the main body portion, which has an insulating property and to which the positive electrode is fixed, and a positive electrode portion.
It is provided in the main body portion at an appropriate length away from the positive electrode portion, has an insulating property, and is provided with a negative electrode portion in which the negative electrode is fixed.
The static elimination device according to claim 1, wherein a plurality of outlets are provided side by side between the positive electrode portion and the negative electrode portion of the main body portion. An insulating main body provided with a first electrode portion to which a first electrode having one polarity of the positive electrode or the negative electrode is fixed, and a main body portion having an insulating property.
An insulating facing main body portion provided with a second electrode portion which is arranged to face the main body portion and to which a second electrode having the other polarity of the positive electrode or the negative electrode is fixed.
Equipped with
The static elimination device according to claim 1, wherein the air outlet is provided in the main body. The main body is
One end is closed, the other end is open, and an air flow path is provided inside .
A plurality of the first electrode portions having an insulating property, which are provided on the main body portion at an appropriate length and distance from each other .
A plurality of the second electrode portions having an insulating property, which are provided on the facing main body portion at an appropriate length and distance from each other, are provided.
The static elimination device according to claim 3 , wherein a plurality of outlets are provided side by side between the plurality of first electrode portions of the main body portion. The static elimination device according to claim 3 or 4 , wherein the air outlet blows air toward the facing main body portion. The static elimination device according to claim 2 or 4, wherein the compressed air is made to flow in from the opening toward the flow path. It is a static elimination method that eliminates static electricity by using the electric force acting on the electric charge in the electric field.
Apply a positive voltage to the positive electrode and
A negative voltage is applied to the negative electrode,
Air is blown out from the outlet toward the object,
By applying a voltage to the positive electrode and the negative electrode, ions are generated and an electric line of force is formed from the positive electrode toward the negative electrode so as to intersect the object.
A static elimination method in which the ions are moved to the object by relying on the electric lines of force, and the ions are moved to the object by the flow of air blown from the outlet .

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